阅读说明：本技术 扫雪机 (Snow sweeper ) 是由 山冈敏成 聂方杰 付慧星 王浩 孔孟 钱椿森 于 2019-08-21 设计创作，主要内容包括：本发明公开了一种扫雪机,包括：扫雪桨,包括用于扫雪的扫雪桨叶；壳体,形成有用于容纳至少部分扫雪桨的第一容纳空间和与第一容纳空间连通的第二容纳空间,第二容纳空间还定义有一个出雪口；抛雪桨,至少部分设置于第二容纳空间内且能将雪抛向出雪口；行走轮组,用于支撑扫雪机以使扫雪机能在地面上行走；第一电机,用于驱动行走轮组转动；第二电机,用于驱动扫雪桨以第一轴线为轴转动并驱动抛雪桨以第二轴线为轴转动；电池包,用于给第一电机和第二电机提供能量来源；其中,第二电机的额定输出功率与第一电机的额定输出功率的比值大于等于0.03且小于等于0.3。本发明能够提供一种除雪效率更高的自走式扫雪机。(The invention discloses a snow sweeper, which comprises: the snow-sweeping paddle comprises a snow-sweeping paddle for sweeping snow; the snow sweeper comprises a shell, a first connecting piece and a second connecting piece, wherein the shell is provided with a first accommodating space used for accommodating at least part of a snow sweeping paddle and a second accommodating space communicated with the first accommodating space, and the second accommodating space is further defined with a snow outlet; the snow throwing paddle is at least partially arranged in the second accommodating space and can throw snow to the snow outlet; the walking wheel set is used for supporting the snow sweeper so that the snow sweeper can walk on the ground; the first motor is used for driving the travelling wheel set to rotate; the second motor is used for driving the snow sweeping paddle to rotate by taking the first axis as a shaft and driving the snow throwing paddle to rotate by taking the second axis as a shaft; a battery pack for providing a source of energy to the first and second electrical machines; wherein, the ratio of the rated output power of the second motor to the rated output power of the first motor is more than or equal to 0.03 and less than or equal to 0.3. The invention can provide the self-propelled snow sweeper with higher snow removing efficiency.)

1. A snow sweeper comprises

The snow-sweeping paddle comprises a snow-sweeping paddle for sweeping snow;

the snow sweeper comprises a shell, a first connecting piece and a second connecting piece, wherein the shell is provided with a first accommodating space used for accommodating at least part of a snow sweeping paddle and a second accommodating space communicated with the first accommodating space, and the second accommodating space is further defined with a snow outlet;

the snow throwing paddle is at least partially arranged in the second accommodating space and can throw snow to the snow outlet;

the walking wheel set is used for supporting the snow sweeper so that the snow sweeper can walk on the ground;

the first motor is used for driving the travelling wheel set to rotate;

the second motor is used for driving the snow sweeping paddle to rotate by taking the first axis as a shaft and driving the snow throwing paddle to rotate by taking the second axis as a shaft;

a battery pack for providing a source of energy to the first and second electrical machines;

the ratio of the rated output power of the second motor to the rated output power of the first motor is more than or equal to 0.03 and less than or equal to 0.3, and the rotation speed of the snow throwing paddle is more than or equal to 500 rpm and less than or equal to 1500 rpm.

2. A snow plough as claimed in claim 1, wherein:

and the output power of the second motor is more than or equal to 2500W and less than or equal to 6000W.

3. A snow plough as claimed in claim 2, wherein:

the output rotating speed of the second motor is greater than or equal to 5000 rpm and less than or equal to 15000 rpm.

4. A snow plough as claimed in claim 3, wherein:

the first motor comprises a first motor shaft for outputting power, and the second motor comprises a second motor shaft for outputting power; when the snow sweeper travels along a straight line, the rotating axis of the first motor shaft is perpendicular to the rotating axis of the second motor shaft.

5. A snow plough as claimed in claim 4, wherein:

the walking wheel set comprises:

a running wheel axle;

the two travelling wheels are arranged at two ends of the travelling wheel shaft;

when the snow sweeper walks along a straight line, the two walking wheels are symmetrically arranged on two sides of a first plane;

when the snow sweeper walks along a straight line, the second axis of the rotation of the snow throwing paddle is positioned in the first plane.

6. A snow plough as claimed in claim 4, wherein:

the walking wheel set comprises: the walking wheel comprises a walking wheel shaft and two walking wheels arranged at two ends of the walking wheel shaft; in a vertical direction perpendicular to the running wheel shaft and perpendicular to the second motor shaft, the vertical distance between the second motor shaft and the running wheel shaft is greater than or equal to 30 mm and less than or equal to 40 mm.

7. A snow plough as claimed in claim 3, wherein:

the snow sweeper comprises two battery packs; and the ratio of the sum of rated capacities of the two battery packs to the rated output power of the second motor is more than or equal to 0.8Ah/kw and less than or equal to 8 Ah/kw.

8. A snow plough as claimed in claim 3, wherein:

the snow sweeper further comprises:

the first driving shaft is used for mounting the snow-sweeping paddle and driving the snow-sweeping paddle to rotate by taking the first axis as a shaft;

the second driving shaft is used for mounting the snow throwing paddle and driving the snow throwing paddle to rotate by taking the second axis as a shaft;

and the first speed reduction assembly is used for transmitting power output by a second motor to the second driving shaft, and the ratio of the output rotating speed of the second motor to the rotating speed of the first driving shaft is defined as a first speed reduction ratio of the first speed reduction assembly, and the first speed reduction ratio is greater than or equal to 8 and less than or equal to 12.

9. A snow plough as claimed in claim 8, wherein:

the first reduction assembly includes a plurality of gears for effecting power transfer.

10. A snow plough as claimed in claim 1, wherein:

the snow sweeper further comprises:

a first trigger for operation by a user to activate the first motor;

a second trigger for operation by a user to activate the second motor;

wherein, a connecting mechanism which enables the first trigger and the second trigger to form an electrical connection or a mechanical connection is arranged between the first trigger and the second trigger.

Technical Field

The invention relates to a garden tool, in particular to a snow sweeper.

Background

The snow sweeper can be used as an important device for removing snow in winter, has the important advantages of high efficiency, economy, environmental protection and the like, and is gradually popularized and used at home and abroad along with increasing economy and continuous social progress. Snow plows can be classified into two major categories, engine drives and motor drives, depending on the power source. Depending on the mode of travel of the snow sweeper, it can be classified into two types, hand-push type and self-propelled type. Most of motor-driven self-propelled snow plows on the market have the problems of low rotation speed of a snow throwing paddle, low snow removing efficiency and the like.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a snow sweeper with higher snow removing efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions:

a snow blower comprising: the snow-sweeping paddle comprises a snow-sweeping paddle for sweeping snow; the snow sweeper comprises a shell, a first connecting piece and a second connecting piece, wherein the shell is provided with a first accommodating space used for accommodating at least part of a snow sweeping paddle and a second accommodating space communicated with the first accommodating space, and the second accommodating space is further defined with a snow outlet; the snow throwing paddle is at least partially arranged in the second accommodating space and can throw snow to the snow outlet; the walking wheel set is used for supporting the snow sweeper so that the snow sweeper can walk on the ground; the first motor is used for driving the travelling wheel set to rotate; the second motor is used for driving the snow sweeping paddle to rotate by taking the first axis as a shaft and driving the snow throwing paddle to rotate by taking the second axis as a shaft; a battery pack for providing a source of energy to the first and second electrical machines; the ratio of the rated output power of the second motor to the rated output power of the first motor is more than or equal to 0.03 and less than or equal to 0.3, and the rotation speed of the snow throwing paddle is more than or equal to 500 rpm and less than or equal to 1500 rpm.

Optionally, the output power of the second motor is greater than or equal to 2500W and less than or equal to 6000W.

Optionally, the output rotation speed of the second motor is greater than or equal to 5000 rpm and less than or equal to 15000 rpm.

Optionally, the first motor comprises a first motor shaft for outputting power, and the second motor comprises a second motor shaft for outputting power; when the snow sweeper travels along a straight line, the rotating axis of the first motor shaft is perpendicular to the rotating axis of the second motor shaft.

Optionally, the road wheel set comprises: a running wheel axle; two walking wheels arranged at two ends of the walking wheel shaft; when the snow sweeper walks along a straight line, the two walking wheels are symmetrically arranged on two sides of the first plane; when the snow sweeper travels along a straight line, the second axis of rotation of the snow throwing paddle is positioned in the first plane.

Optionally, the road wheel set comprises: the walking wheel comprises a walking wheel shaft and two walking wheels arranged at two ends of the walking wheel shaft; in a vertical direction perpendicular to the running wheel shaft and perpendicular to the second motor shaft, the vertical distance between the second motor shaft and the running wheel shaft is greater than or equal to 30 mm and less than or equal to 40 mm.

Optionally, the snow blower includes two battery packs; the ratio of the sum of rated capacities of the two battery packs to the rated output power of the second motor is greater than or equal to 0.8Ah/kw and less than or equal to 8 Ah/kw.

Optionally, the snow plough further comprises: the first driving shaft is used for mounting the snow-sweeping paddle and driving the snow-sweeping paddle to rotate by taking the first axis as a shaft; the second driving shaft is used for mounting the snow throwing paddle and driving the snow throwing paddle to rotate by taking the second axis as a shaft; and the first speed reduction assembly is used for transmitting the power output by the second motor to the second driving shaft, the ratio of the output rotating speed of the second motor to the rotating speed of the first driving shaft is defined as a first speed reduction ratio of the first speed reduction assembly, and the first speed reduction ratio is more than or equal to 8 and less than or equal to 12.

Optionally, the first reduction assembly comprises a plurality of gears for effecting power transfer.

Optionally, the snow plough further comprises: the first trigger is used for being operated by a user to start the first motor; a second trigger for operation by a user to start the second motor; wherein, a connecting mechanism which enables the first trigger and the second trigger to form an electric connection or a mechanical connection is also arranged between the first trigger and the second trigger.

The invention has the advantages that: the snow sweeper adopts the double-motor driving travelling wheel set and the two-stage snow sweeping structure, so that the snow sweeper has higher snow removing efficiency while realizing self-travelling.

Drawings

FIG. 1 is a front elevational view of a first embodiment of a snow blower;

fig. 2 is a perspective view of the snow sweeper of the first embodiment;

FIG. 3 is a top plan view of the snow sweeper of the first embodiment;

FIG. 4 is an exploded view of the power system of the snowplow of FIG. 1;

FIG. 5 is a perspective view of the battery pack housing and biasing member of FIG. 1;

FIG. 6 is a perspective view of a portion of the snow sweeping system of the snow sweeper of FIG. 1;

FIG. 7 is an exploded view of the snow sweeping system of the snow sweeper of FIG. 1;

FIG. 8 is a perspective view of a portion of the snow sweeping system and drive train of FIG. 1;

FIG. 9 is a plan view of the snow sweeping paddle and first drive shaft of the snow sweeper of FIG. 1;

FIG. 10 is a perspective view of the snow throwing paddle of FIG. 1;

FIG. 11 is a plan view of the snow throwing paddle and the snow throwing paddle housing of FIG. 1;

FIG. 12 is a perspective view of a running wheel set of the snow sweeper of FIG. 1;

FIG. 13 is a perspective view of a partial structure of the power system and drive train of the snow sweeper of FIG. 1;

FIG. 14 is a plan view of a portion of the structure of the powertrain and driveline of the snowplow of FIG. 1;

FIG. 15 is a schematic illustration of the second electric machine and the first and second reduction assemblies of FIG. 14 with the housing removed;

FIG. 16 is a perspective view of a portion of the structure of the snow sweeper of FIG. 1;

FIG. 17 is a perspective view of the housing of the snow sweeper of FIG. 1;

FIG. 18 is a perspective view of the snow throwing paddle housing, boss and second drive shaft of the snowplow of FIG. 1;

FIG. 19 is an exploded view of the snow plow blade housing, connecting member, locating member, first drive shaft of the snowplow of FIG. 1;

FIG. 20 is a top plan view of the operational components of the snow plow of FIG. 1;

FIG. 21 is a side view of the operational components of the snow plow of FIG. 1;

FIG. 22 is a side perspective view of the operational assembly of the snow plow of FIG. 1;

FIG. 23 is a perspective view of the snow throwing system of the snow sweeper of FIG. 1;

FIG. 24 is a perspective view of the battery pack housing, first motor housing, second motor housing, and circuit board housing of the snowplow of FIG. 1;

FIG. 25 is another angled perspective view of the battery pack housing, the first motor housing, the second motor housing, and the circuit board housing of the snowplow of FIG. 1;

FIG. 26 is a perspective view of a circuit board assembly and circuit board housing of the snow sweeper of FIG. 1;

figure 27 is a perspective view of the first and second motor housings of the snow sweeper of figure 1;

FIG. 28 is a perspective view of the housing, the first lighting assembly and the wire cage of the snowplow of FIG. 1;

FIG. 29 is a rear elevational view of the first lighting assembly of the snow sweeper of FIG. 1 with a portion of the housing removed;

figure 30 is a front view of the first lighting assembly of the snow sweeper of figure 1.

Detailed Description

The invention is described in detail below with reference to the figures and the embodiments.

Fig. 1 is a schematic view of a snow sweeper 100 according to a first embodiment of the present invention. As shown in fig. 1 to 3, the snow sweeper 100 comprises a main machine 10 and an operating assembly 20, the main machine 10 at least comprises a road wheel set 16 for enabling the snow sweeper 100 to walk on the ground, and the operating assembly 20 is connected with the main machine 10. Host 10 further includes a host housing 11 and an energy system 12, a power system 13, a transmission system 14, and a snow removal system 15. The drive train 14 is used to transfer kinetic energy from the power system 13 to the snow plough system 15. For convenience of explanation, the front-back and up-down directions shown in fig. 1 are set according to the traveling direction of the snow sweeper 100 under normal conditions. The operating assembly 20 comprises an upper connecting rod and the main body 10 comprises a lower connecting rod, the upper connecting rod being at least partially located above the lower connecting rod. The upper connecting rod and the lower connecting rod are connected through fasteners such as screws and nuts to realize the connection between the main body 10 and the operating assembly 20, and the upper connecting rod and the lower connecting rod form a telescopic connection to adjust the height of the operating assembly 20 relative to the ground. In this embodiment, the upper connecting rod and the lower connecting rod form a sliding connection through the U-shaped groove.

As shown in fig. 4 and 5, the energy system 12 includes a battery pack 121, the battery pack 121 may be a single battery pack 121 or a plurality of battery packs 121, and in this embodiment, the energy system 12 includes a dual battery pack and preferably a dc lithium battery. The main body case 11 includes a battery pack case 111 for accommodating the battery pack 121, the battery pack case 111 includes a battery compartment cover 111a and a battery compartment body 111b, the battery compartment cover 111a and the battery compartment body 111b surround to form a battery compartment for accommodating the battery pack 121, the battery compartment includes a first cavity 111c and a second cavity 111d divided by the battery compartment body 111b, and the two battery packs 121 are respectively mounted in the first cavity 111c and the second cavity 111 d. The battery compartment cover 111a in fig. 4 is in an open state. The energy source system 12 further includes a securing assembly for securing the battery pack 121, the securing assembly including a biasing member 122a and a locking member 122 b. When the battery pack 121 is mounted in the battery compartment, the locking member 122b fixes the battery pack 121 to the battery compartment 111b against the pressure of the biasing member 122 a; when the battery pack 121 is taken out of the battery compartment, the locking member 122b is simply unlocked, and the biasing force generated by the biasing member 122a automatically ejects the battery pack 121. The battery compartment cover 111a and the battery compartment body 111b are rotationally connected, and the angle at which the battery compartment cover 111a can rotate relative to the battery compartment body 111b is greater than or equal to 0 degrees and less than or equal to 180 degrees. In addition, when the battery compartment cover 111a is in a closed state, it is fixedly connected to the battery compartment body 111b by means of a locking member or the like. The battery pack 121 includes a power indicator 121a for indicating the power of the battery pack 121, and the power indicator 121a is disposed on the battery pack 121.

As shown in fig. 6 to 11, the snow sweeping system 15 comprises a snow sweeping paddle 151, the snow sweeping paddle 151 being a functional element of the snow sweeper 100 for agitating snow on the ground, the snow sweeping paddle 151 being rotatable about the first axis 101. The snow-sweeping paddle 151 comprises a snow-sweeping blade 151a, the distance from the farthest point on the snow-sweeping blade 151a from the first axis 101 to the first axis 101 is the radius R1 of the snow-sweeping paddle 151, the radius R1 of the snow-sweeping paddle 151 is greater than or equal to 120 mm and less than or equal to 150mm, and in the embodiment, the radius R1 of the snow-sweeping paddle 151 is about 134 mm. In this embodiment, the snow-removing paddle 151 includes left and right snow-removing paddle assemblies, each of which includes a plurality of snow-removing blades 151a, and each of the snow-removing blades 151a is integrally formed.

The main machine case 11 includes a case 112, and the case 112 is formed with a first accommodation space 112b formed to accommodate at least a part of the paddle 151 and a second accommodation space 112f communicating with the first accommodation space 112 b. In this embodiment, the housing 112 includes a paddle housing 112a, the paddle housing 112a is formed with a first receiving space 112b for receiving the paddle 151, and the paddle 151 is rotatable within the paddle housing 112a about the first axis 101. Specifically, the paddle housing 112a includes two side walls 112c that are substantially perpendicular to the ground and parallel to each other, and the paddle 151 is mounted between the two side walls 112 c. The snow-removing paddle housing 112a is formed with a snow inlet 112d for entering snow, that is, the first accommodation space 112b defines one snow inlet 112 d. In this embodiment, the snow paddle housing 112a is a one-piece metal structure with the snow inlet 112d facing forward. As an alternative embodiment, the snow plow blade housing 112a may also be integrally formed of a non-metallic material; as another alternative, the snow plow blade housing 112a may also be assembled from metallic and non-metallic materials; as another alternative, the snow plow blade shell 112a may be formed by joining a plurality of separately formed shells, and the materials of the shells may be the same or different.

The snow sweeping system 15 further comprises a snow throwing paddle 152 for further stirring and throwing the snow, and the housing 112 further comprises a snow throwing paddle housing 112e, the snow throwing paddle housing 112e being formed with a second receiving space 112f for receiving at least part of the snow throwing paddle 152, the snow throwing paddle 152 being rotatable within the snow throwing paddle housing 112e about the second axis 102. The second axis 102 is perpendicular to the first axis 101. In this embodiment, the first accommodating space 112b and the second accommodating space 112f are communicated with each other, the first accommodating space 112b defines a snow inlet 112d, the second accommodating space 112f defines a snow outlet 112g, and under the action of the snow-sweeping paddle 151, snow enters the snow-sweeping paddle housing 112a from the snow inlet 112d of the snow-sweeping paddle housing 112a, and is discharged from the snow outlet 112g after further action of the snow-throwing paddle 152. Specifically, the first accommodation space 112b is larger than the second accommodation space 112f, and the first accommodation space 112b is provided on the front side of the second accommodation space 112f in the advancing direction of the snow sweeper 100. The second receiving space 112f has a cylindrical shape. In this embodiment, the snow-sweeping paddle housing 112a and the snow-throwing paddle housing 112e are two housings 112 that are formed separately, and are mechanically connected together to communicate the first accommodation space 112b with the second accommodation space 112 f; as an alternative embodiment, the snow plow blade housing 112a and the snow throwing blade housing 112e may also be one housing 112 formed integrally; as an alternative, the snow plow blade housing 112a and the snow thrower blade housing 112e may also be formed by joining separately formed multipart housings 112. In this embodiment, the housing 112 further includes a snow outlet tube 112k protruding from the second accommodation space 112f, the snow outlet tube 112k extends substantially along a tangential direction of the cylinder, the snow outlet tube 112k is connected to the snow outlet 112g, and a space formed by the snow outlet tube 112k around is communicated with the second accommodation space 112 f. The shell 112a of the snow sweeping paddle, the shell 112e of the snow throwing paddle and the snow outlet cylinder 112k are all stamping parts and are connected into a whole through welding.

The paddles 152 include a paddle base 152a and a paddle blade 152b mounted to the paddle base 152 a. The snow thrower blades 152b are uniformly mounted to the snow thrower base 152a along the circumferential direction, and in this embodiment, the snow thrower blades 152b are straight blades. The snow thrower 152 further comprises a support portion 152c for supporting the snow thrower blade 152b, wherein the support portion 152c contacts the surface of the snow thrower blade 152b, and the support portion 152c and the snow thrower blade 152b are fixedly connected to the snow thrower base 152 a.

In one embodiment, the second receiving space 112f has a cross-section in a plane perpendicular to the second axis 102 that is substantially a first circle 101 a; the snow throwing paddle 152 comprises a first end close to the second axis 102 and a second end far away from the second axis 102, when the snow throwing paddle 152 rotates by taking the second axis 102 as an axis, the track of the second end is a second circle 101b, the difference between the radius R of the first circle 101a and the radius R2 of the second circle 101b is greater than or equal to 2 mm and less than or equal to 4 mm, and further, the difference between the radius R of the first circle 101a and the radius R2 of the second circle 101b is greater than or equal to 2.5 mm and less than or equal to 3.5 mm.

As another alternative embodiment, a connecting line of the second axis 102 to any point on the inner wall of the snow throwing paddle housing 112e is a first radial line OA, a connecting line of the second axis 102 to any point on the snow throwing paddle 152 is a second radial line OB, the first radial line OA and the second radial line OB are both perpendicular to the second axis 102, the first radial line OA and the second radial line OB are partially overlapped, a minimum value of a difference between the length OA of the first radial line and the length OB of the second radial line is a minimum gap n, the minimum gap n is greater than or equal to 2 mm and less than or equal to 3 mm, and optionally, the minimum gap n is greater than or equal to 2 mm and less than or equal to 2.5 mm. That is, when the paddles 152 and the paddle housing 112e are mounted on different axes, the clearance from the farthest end of the paddles 152 from the second axis 102 to the inner wall of the paddle housing 112e varies, where the minimum clearance n is greater than or equal to 2 mm and less than or equal to 3 mm. Preferably, the second accommodation space 112f is substantially cylindrical; the paddles 152 are centrally symmetric about the second axis 102.

In both embodiments, the clearance between the farthest end of the snow throwing paddle 152 from the second axis 102 and the inner wall of the snow throwing paddle housing 112e forming the second accommodating space 112f is small, and in this embodiment, it can be said that the clearance between the tip of the snow throwing blade 152b and the inner wall of the snow throwing paddle housing 112e is small, so that the snow throwing efficiency is high. Specifically, the radius R2 of the second circle 101b is equal to or greater than 130 mm and equal to or less than 170 mm, and optionally, the radius R2 of the second circle 101b is equal to or greater than 140 mm and equal to or less than 160 mm. A dimension L 'of the snow throwing blade 152b in a radial direction perpendicular to the second axis 102 is greater than or equal to 80 mm and less than or equal to 130 mm, and optionally, a dimension L' of the snow throwing blade 152b in a radial direction perpendicular to the second axis 102 is greater than or equal to 95 mm and less than or equal to 115 mm. The width W of the snow throwing blade 152b in the direction perpendicular to the radial direction thereof is 50mm or more and 90 mm or less, and optionally, the width W of the snow throwing blade 152b in the direction perpendicular to the radial direction thereof is 65 mm or more and 80 mm or less. In this embodiment, the radius R2 of the second circle 101b is about 150mm, the dimension L' of the snow throwing blade 152b in a radial direction perpendicular to the second axis 102 is about 106 mm, and the width W of the snow throwing blade 152b in a direction perpendicular to its radial direction is about 75 mm.

As shown in fig. 8, 10, 12 to 15, the main machine 10 (fig. 1) further includes a road wheel set 16 for supporting the snow sweeper 100 so that the snow sweeper 100 can walk on the ground, and the power system 13 includes a first motor 131 and a second motor 132, the first motor 131 is used for driving the road wheel set 16 to rotate; the second motor 132 is used for driving the snow-sweeping paddle 151 to rotate around the first axis 101 and driving the snow-throwing paddle 152 to rotate around the second axis 102; two battery packs 121 (fig. 1) are used to provide a source of energy to the first and second electric machines 131, 132. The sum of the rated capacities of the two battery packs 121 and the rated output power of the second motor 132 are greater than or equal to 0.8Ah/kw and less than or equal to 8Ah/kw, and optionally, the ratio of the sum of the rated capacities of the two battery packs 121 and the rated output power of the second motor 132 is greater than or equal to 2 Ah/kw and less than or equal to 6 Ah/kw. The ratio of the rated output power of the second motor 132 to the rated output power of the first motor 131 is greater than or equal to 0.03 and less than or equal to 0.3; optionally, the ratio of the rated output power of the second motor 132 to the rated output power of the first motor 131 is greater than or equal to 0.1 and less than or equal to 0.25, which makes the energy distribution of the snow sweeper 100 more reasonable and the work efficiency higher. Specifically, the output power of the second motor 132 is not less than 2500W and not more than 6000W, and the output rotation speed of the second motor 132 is not less than 5000 rpm and not more than 15000 rpm. The rotation speed of the snow throwing paddle 152 is greater than or equal to 500 rpm and less than or equal to 1500 rpm, which ensures that the snow sweeper 100 has excellent snow removing performance.

The walking wheel set 16 comprises a walking wheel shaft 161 and at least two walking wheels 162; when the snow sweeper 100 walks along a straight line, the two walking wheels 162 are basically symmetrically arranged on two sides of the first plane 11'; when the snow sweeper 100 is travelling in a straight line, the second axis 102 about which the snow throwing paddle 152 rotates lies in the first plane 11', that is, the second axis 102 about which the snow throwing paddle 152 rotates lies in the center of the travelling axle 161, which makes the weight distribution of the snow sweeper 100 more uniform and at the same time makes the snow throwing paddle 152 throw snow more uniformly.

The snowplow 100 also includes a travel drive assembly 141 that provides power transmission between the first motor 131 and the set of travel wheels 16. The running wheel set 16 is connected to an output shaft of the running gear assembly 141, and is axially positioned by a fastening member, which is embodied as a shaft lock pin structure in the embodiment. The road wheel set 16 also includes a differential for the two road wheels 162 to rotate at different rotational speeds. The travel transmission assembly 141 includes a gear assembly through which the rotation of the first motor 131 is transmitted to the travel wheel set 16, a crankshaft, and the like. The gear assembly includes a three stage gear reduction. In this embodiment, the first motor 131 is specifically a brushless motor.

The first motor 131 includes a first motor shaft 131a for outputting power, and the second motor 132 includes a second motor shaft 132a for outputting power; when the snow sweeper 100 travels in a straight line, the axis of rotation of the first motor shaft 131a is perpendicular to the axis of rotation of the second motor shaft 132 a. The first motor 131 is disposed at a rear end of the second motor 132 in a linear advancing direction of the snow sweeper 100. In a vertical direction perpendicular to the traveling axle 161 and perpendicular to the second motor shaft 132a, a vertical distance d1 between the second motor shaft 132a and the traveling axle 161 is greater than or equal to 30 mm and less than or equal to 40 mm, and specifically, in the present embodiment, a vertical distance d1 between the second motor shaft 132a and the traveling axle 161 is about 33 mm. In this direction, the specific position of the second motor shaft 132a relative to the running wheel shaft 161 is not limited, and in this embodiment, the second motor shaft 132a is located on the lower side of the running wheel shaft 161. The axis of rotation of the second motor shaft 132a is parallel to the second axis 102 of rotation of the snow thrower 152; the specific location of the second motor shaft 132a relative to the second axis 102 is not limited, and the distance d2 between the axis of rotation of the second motor shaft 132a and the second axis 102 is greater than or equal to 40 mm and less than or equal to 60 mm, and in this embodiment, the distance d2 between the axis of rotation of the second motor shaft 132a and the second axis 102 is about 51.5 mm.

The snowplow 100 further comprises a first driving shaft 142a and a second driving shaft 143a, wherein the first driving shaft 142a is used for installing the snow-sweeping paddle 151 and driving the snow-sweeping paddle 151 to rotate by taking the first axis 101 as an axis; the second drive shaft 143a is used to mount the paddle 152 and drive the paddle 152 to rotate about the second axis 102. Specifically, the snow sweeping blade 151a is mounted to the first drive shaft 142a, and the snow throwing paddle base 152a is mounted to the second drive shaft 143 a. The second motor shaft 132a is located at a lower side of the second driving shaft 143a in the up-down direction.

The paddle base 152a is formed with a mounting portion 152d, and the mounting portion 152d is formed with a transmission hole 152e through which the second drive shaft 143a passes and which enables the paddles 152 to rotate synchronously with the second drive shaft 143 a. Specifically, the transmission hole 152e is a flat hole, and flat transmission is formed between the second driving shaft 143a and the mounting portion 152 d. The snow sweeper 100 further includes a cross pin 152f extending through the mounting portion 152d and the second drive shaft 143a in a direction perpendicular to the second axis 102 to fix the mounting portion 152d relative to the second drive shaft 143a in the direction of the second axis 102, with the cross pin 152f also serving to transmit power between the second drive shaft 143a and the mounting portion 152 d.

As shown in fig. 13 and 15 to 18, the snow blower 100 further comprises a first speed reduction assembly 143 and a second speed reduction assembly 142, wherein the first speed reduction assembly 143 is used for transmitting the power output by the second motor 132 to the second driving shaft 143a, and in the embodiment, the first speed reduction assembly 143 comprises a plurality of gears for realizing the power transmission. The second reduction assembly 142 is used to effect power transmission between the second drive shaft 143a and the first drive shaft 142 a. That is, the power of the second motor 132 is transmitted to the first driving shaft 142a after passing through the two-stage power transmission of the first and second speed reduction assemblies 143 and 142. The first reduction assembly 143 includes a first type gear 143b for effecting power transmission between the second motor 132 and the second drive shaft 143 a; the second reduction assembly 142 includes a second gear 142b for power transmission between the second drive shaft 143a and the first drive shaft 142 a. In the present embodiment, the first reduction assembly 143 includes a plurality of first-type gears 143 b; the second reduction assembly 142 includes a plurality of second type gears 142b, one of the plurality of first type gears 143b is mounted to the second driving shaft 143a and configured to rotate in synchronization with the second driving shaft 143a, and the first type gear 143b mounted to the second driving shaft 143a is configured to be detachably coupled to the second driving shaft 143 a. Specifically, the first gear 143b is a spur gear, the second gear 142b includes both a spur gear and a bevel gear, and the second driving shaft 143a is splined to the bevel gear.

The ratio of the output rotation speed of the second motor 132 to the rotation speed of the first driving shaft 142a is defined as a first reduction ratio of the first reduction assembly 143, which is greater than or equal to 8 and less than or equal to 12, and optionally, greater than or equal to 9 and less than or equal to 11. The ratio of the rotation speed of the second driving shaft 143a to the rotation speed of the first driving shaft 142a is defined as a second transmission ratio of the second speed reducing assembly 142, the second transmission ratio is greater than or equal to 8 and less than or equal to 12, and optionally, the second transmission ratio is greater than or equal to 9 and less than or equal to 11.

The snow sweeper 100 further comprises a first speed reduction box 143c for accommodating the first speed reduction assembly 143, the first speed reduction box 143c is formed with a protrusion 143d, the snow throwing paddle housing 112e is formed with a through hole 112h through which the protrusion 143d passes to be inserted into the second accommodating space 112f, and the hole wall of the through hole 112h is matched with the outer wall of the protrusion 143d to achieve positioning of the snow throwing paddle housing 112e relative to the first speed reduction box 143 c. That is, at least a portion of the first reduction gearbox 143c extends into the second receiving space 112f, and the first reduction gearbox 143c and the snow thrower housing 112e are positioned by shaft hole fit to ensure that the first reduction gearbox 143c does not substantially move relative to the snow thrower housing 112e in the radial direction of the second axis 102. Specifically, the outer wall of the boss 143d is substantially cylindrical, and the through hole 112h is a circular hole through which the boss 143d passes, and the radius of the circular hole is substantially the same as the radius of the cylindrical shape.

As shown in fig. 6 and 19, the snowplow 100 further includes a connecting member 113 for connecting the first drive shaft 142a and the snowplow blade housing 112a, and the connecting member 113 is further formed with a connecting hole 113a into which the first drive shaft 142a is inserted. The paddle housing 112a is further formed with a positioning portion 114 for positioning the connecting member 113, and the connecting member 113 is formed with a fitting portion 113b for fitting with the positioning portion 114. The fitting portion 113b is formed with a fitting groove into which the positioning portion 114 is inserted, and the fitting groove guides the coupling member 113 to be coupled to the positioning portion 114 in a direction perpendicular to the first axis 101. Specifically, the positioning portion 114 is cylindrical and projects toward the inside of the paddle housing 112a along the first axis 101. The fitting groove includes a circular groove recessed toward the inside of the connecting member 113 and a rectangular groove substantially tangent to the circular groove, and the positioning portion 114 can slide in along the rectangular groove to be fitted with the circular groove, thereby positioning the connecting member 113 and the paddle housing 112 a. Then, the connecting member 113 is mounted by rotating the connecting member 113 about the first axis 101, aligning the screw hole of the connecting member 113 with the screw hole of the snow paddle housing 112a, and screwing the screw.

As shown in fig. 20 to 22, the operating assembly 20 includes operating handles 21 for a user to operate, the two operating handles 21 are respectively disposed on the left and right sides, the two operating handles 21 are respectively formed with a first holding portion 211 and a second holding portion 212 for the user to hold, in order to facilitate the user to hold, the first holding portion 211 is inclined outward and downward, when the snow sweeper 100 is located on a ground parallel to the horizontal plane, an included angle α formed between the extending direction of the first holding portion 211 and the horizontal plane is greater than or equal to 10 degrees and less than or equal to 40 degrees, an included angle β formed between the extending direction of the first holding portion 211 and the vertical plane is greater than or equal to 10 degrees and less than or equal to 30 degrees, in fact, the first holding portion 211 and the second holding portion 212 are symmetrically disposed with respect to the first plane 11', the same as the first holding portion 211, the second holding portion 212 is inclined outward and downward, when the snow sweeper 100 is located on a ground parallel to the horizontal plane, an included angle α formed between the extending direction of the second holding portion 212 and the horizontal plane is greater than or equal to 10 degrees and less than or equal to 40 degrees, and an included angle formed between the extending direction of the vertical portion β is greater than or equal.

The operating assembly 20 also includes a rear pull handle 22 and an operator station 23, the rear pull handle 22 being operable by a user to pull the snow plow 100 rearwardly, the rear pull handle 22 being mounted to the operator station 23. When the snow sweeper 100 is positioned on the ground parallel to the horizontal plane, the projection of the rear handle 22 in a plane parallel to the horizontal plane extends along a first straight line direction, the projection of the first holding portion 211 in the plane extends along a second straight line direction, the first straight line and the second straight line intersect with each other to form an angle gamma which is greater than or equal to 60 degrees and less than or equal to 80 degrees, and optionally, the first straight line and the second straight line intersect with each other to form an angle gamma which is greater than or equal to 65 degrees and less than or equal to 75 degrees.

The operating assembly 20 further comprises a first trigger 241 and a second trigger 242, the first trigger 241 being operable by a user to control the first motor 131; the second trigger 242 is for user operation to control the second motor 132. The first trigger 241 is connected to the first grip 211 and the second trigger 242 is connected to the second grip 212. For convenience of explanation, as shown in fig. 20, the left-right direction is set according to a position where the user faces the operating assembly 20 to operate the snow sweeper 100. Specifically, in the present embodiment, the left trigger is the first trigger 241, and the right trigger is the second trigger 242, but the absolute positions of the first trigger 241 and the second trigger 242 are not limited. In the present embodiment, the left and right operating handles 21 are substantially symmetrical with respect to the first plane 11 ', and the first trigger 241 and the second trigger 242 are substantially symmetrical with respect to the first plane 11'.

The first trigger 241 and the second trigger 242 each have at least two states, namely a release state and an activation state, the first trigger 241 is activated to control the first motor 131 to be activated, and the second trigger 242 is activated to control the second motor 132 to be activated. The first trigger 241 in fig. 20-22 is in a released state and the second trigger 242 is in a triggered state. When the first trigger 241 and the second trigger 242 are in the trigger state, they are at least partially attached to the operating handle 21, and in fact, the user can hold the first trigger 241 or the second trigger 242 to the trigger state while holding the operating handle 21 with one hand. Certain control logic is provided between the first trigger 241 and the second trigger 242 by the electrical or mechanical connection between the first trigger 241 and the second trigger 242. The control logic of the first trigger 241 and the second trigger 242 in this embodiment is as follows: when the second trigger 242 is triggered independently, the second trigger 242 is released, and the second trigger 242 resets and rebounds; after the first trigger 241 is triggered independently, the first trigger 241 is released, and the first trigger 241 resets and rebounds; trigger first trigger 241 and second trigger 242 simultaneously, if only release first trigger 241, first trigger 241 resets and kick-backs, if only release second trigger 242, second trigger 242 does not reset and kick-backs, need release first trigger 241 and second trigger 242, and second trigger 242 just resets and kick-backs, and first trigger 241 also resets and rebounds simultaneously. A connection mechanism is further provided between the first trigger 241 and the second trigger 242 such that an electrical connection or a mechanical connection is formed therebetween to implement the above-described control logic. In this embodiment, the first trigger 241 and the second trigger 242 are mechanically connected.

The operating assembly 20 further includes a safety switch 25, the second trigger 242 being connected to the safety switch 25, the safety switch 25 being mounted to the console 23. The safety switch 25 is electrically or communicatively connected to the circuit board assembly 181 (see fig. 26). The snow sweeper 100 is provided with a dual switch activation to improve the operational safety of the snow sweeper 100: to start the snow blower 100, the safety switch 25 is triggered first, and then the second trigger 242 is triggered within a preset time, which is generally 3 to 10 seconds; the second trigger 242 is simply released when the snow plow 100 is turned off.

The operating assembly 20 further includes a first speed switch 261 and a second speed switch 262. The first speed regulating switch 261 regulates the rotation speed of the first motor 131; the second speed regulating switch 262 regulates the rotational speed of the second motor 132; wherein, first speed governing switch 261 and second speed governing switch 262 set up in operation panel 23, and first speed governing switch 261 and second speed governing switch 262 all can rotate for operation panel 23, and the axis of first speed governing switch 261 pivoted is parallel to each other or coincides with the axis of second speed governing switch 262 pivoted. The safety switch 25 is disposed between the first speed regulation switch 261 and the second speed regulation switch 262.

The first speed regulating switch 261 has a forward gear and a reverse gear; when the first speed regulating switch 261 is in the forward gear, the first trigger 241 is turned on, and the snow sweeper 100 advances; when the first speed control switch 261 is in the reverse gear, the first trigger 241 is turned on, and the snow sweeper 100 is reversed. The snow blower 100 further comprises a control circuit electrically connected with the first trigger 241, the first speed regulating switch 261 and the first motor 131; when the first speed switch 261 is switched from the forward gear to the reverse gear after the first trigger 241 is triggered, the control circuit controls the first motor 131 to stop rotating.

In this embodiment, the operation scheme for controlling the forward and backward movement of the traveling wheel set 16 is as follows: the first speed regulation switch 261 includes a slide rheostat, and stepless speed regulation is adopted, and the first speed regulation switch 261 has a forward gear, a backward gear, and a neutral gear. The operation logic: the mainboard receives the voltage value signal from the first speed regulating switch 261, judges the intention of an operator, and matches the walking speed corresponding to the preset voltage value range, for example, 0-2500 mv corresponds to 0-1.2 m/s of the forward gear in equal proportion; 2501-4000 mv is neutral (the speed is zero); 4001-5000 mv corresponds to the reverse gear 0-0.2 m/s in equal proportion. The specific operation steps are as follows:

1. selecting a required gear, pressing a first trigger 241, and enabling the machine to move forwards or backwards or be in a neutral gear;

2. the first trigger 241 has been depressed, the first trigger 241 is released and the machine stops;

3. when the first trigger 241 is pressed, the machine is moved forwards, if the machine wants to move backwards, the first speed regulating switch 261 is adjusted to a backward gear, the machine stops rather than moves backwards, the first trigger 241 is firstly loosened, and the machine can move backwards only by pressing the first trigger 241 again after the backward speed is adjusted;

4. similarly, if the machine is going forward in the backward state, the operation is analogized according to the 3 rd point.

The second speed regulating switch 262 includes a slide rheostat, which controls the snow-sweeping paddle 151 at a constant speed in five speed steps: 1100/1000/900/800/700 rpm. The specific operation logic is as follows: the main board receives the voltage value signal from the second speed regulation switch 262, judges the intention of the operator, matches the preset voltage value range with the rotating speed of the auger, for example:

0 to 1000mv Auger rotation speed 700rpm

1001-2000 mv Auger rotation speed 800rpm

2001-3000 mv Auger rotation speed 900rpm

3001-4000 mv Auger rotation speed 1000rpm

4001-5000 mv Auger rotation speed 1100rpm

The operation assembly 20 further includes a first detection unit and a second detection unit, the first detection unit detects a signal and transmits the signal to the circuit board assembly 181 to control the first motor 131 to move forward and backward, and the first detection unit is electrically or communicatively connected with the first speed regulation switch 261 and the circuit board assembly 181; the second detection unit detects signals and then transmits the signals to the circuit board assembly 181 to control the change of the rotating speed of the snow-sweeping paddle 151, and the second detection unit is electrically or communicatively connected with the second speed regulation switch 262 and the circuit board assembly 181. In this embodiment, the first detection unit and the second detection unit are both signal switches.

As shown in fig. 6 and 20 to 24, the snow throwing system 17 of the snow sweeper 100 comprises a snow outlet 171, a snow throwing portion 172, a snow throwing transmission assembly 173, a locking assembly 174 and a support rod 175, wherein the snow throwing system 17 comprises the snow outlet 171. Wherein the snow throwing portion 172 is formed with a semi-closed passage around and defines an opening, and one end of the snow throwing portion 172 is rotatably connected to the housing 112 to communicate the second accommodating space 112f with the outside. The snow thrower 172 is pivotally connected to the housing 112 about a third axis 103, the third axis 103 being perpendicular to the ground. The snow discharge portion 171 is attached to the other end of the snow throwing portion 172, specifically, to the top of the snow throwing portion 172, and the snow discharge portion 171 constitutes a rotational connection with the snow throwing portion 172 about the fourth axis 104. The third axis 103 is perpendicular to the fourth axis 104.

The snow is thrown out from the snow outlet 112g after being processed by the snow thrower 152, and is thrown into the air through the snow thrower 172 and the snow outlet 171. In the present embodiment, the entire snow thrower 172 and the snow discharger 171 are rotatable about the third axis 103 in a plane parallel to the ground, and the rotatable range of the snow thrower 172 is approximately one degree, and the rotatable range of the snow thrower 172 to both the left and right is one degree. The snow discharge portion 171 can rotate about the fourth axis 104 in a plane perpendicular to the ground surface, relative to the snow throwing portion 172, over an angle of about degrees. It should be noted that the ground in the present embodiment refers to any plane on which the snow sweeper 100 is placed. The snow throwing portion 172 extends along an arc, and is formed with a groove-like structure along its extending direction, one end communicating with the snow outlet 112g, and the other end communicating with the snow outlet 171. The snow thrower 172 is made of stamped material. The snow discharge portion 171 is also of a groove-like structure, and has one end communicating with the snow throwing portion 172 and the other end communicating with the outside. The snow discharge portion 171 is also formed with an opening, and when the snow discharge portion 171 is attached to the snow throwing portion 172, the opening thereof is oriented in the same direction as the opening of the snow throwing portion 172. That is, the snow throwing portion 172 connects the housing 112 and the snow discharge portion 171 to form a continuous channel for the snow to be discharged.

The snow throwing drive assembly 173 includes a gear structure consisting of at least two gears and a wire spool for adjusting the direction of the snow throwing portion 172, specifically, module m =3, number of teeth: z = 20/32. In addition, a support rod 175 is used to support the snow throwing drive assembly 173, the support rod 175 being connected to the housing 112. Specifically, the support rod 175 is composed of a first rod portion 175a and a second rod portion 175b, and the first rod portion 175a and the second rod portion 175b are locked by the locking assembly 174 and form a detachable connection, so that the snow throwing system 17 can be detached from the snow sweeper 100, thereby facilitating transportation and saving storage space.

The operating assembly 20 further includes a first steering handle 271 and a second steering handle 272, wherein the first steering handle 271 is connected to the snow thrower 172 to adjust the orientation of the opening, and the second steering handle 272 is connected to the snow thrower 172 to adjust the position of the snow thrower 171 with respect to the snow thrower 172. The first steering handle 271 forms a rotational connection with the console 23 about the fifth axis 105; the second steering handle 272 is connected to the console 23 to be rotatable about the sixth axis 106. The fifth axis 105 is perpendicular to the third axis 103, which enables the user to operate the first steering handle 271 with the rotation direction of the first steering handle 271 and the rotation direction of the snow throwing portion 172 having a vector perpendicular to the first plane 11', thereby providing a certain indication to the user and being more ergonomic. Similarly, when the openings of the snow thrower 172 and the snow ejector 171 are oriented parallel to the direction of advance of the snow sweeper 100, the sixth axis 106 is parallel to the fourth axis 104, which makes both the direction of rotation of the second steering handle 272 and the direction of rotation of the snow ejector 171 parallel to the first plane 11', thereby providing some indication to the user and being more ergonomic.

As shown in fig. 3, 24-27, the snowplow 100 further includes a circuit board assembly 181, a circuit board housing 182, and a motor housing. The circuit board assembly 181 is electrically connected to the first motor 131 and the second motor 132, and the circuit board housing 182 surrounds a receiving cavity for disposing the circuit board assembly 181. A waterproof box is further installed on the upper portion of the circuit board housing 182, and each circuit board is installed in the circuit board housing 182, for example: the power board, the power management board, walking control board, lamp control board, main control board etc.. The circuit board housing 182 is disposed between the battery pack 121 and the paddle housing 112 e. The motor housing is formed with a second receiving cavity for receiving the second motor 132. The motor housing is provided at the lower side of the circuit board housing 182. A motor housing is disposed between the housing 112 and the battery pack 121, and a circuit board housing 182 is disposed between the housing 112 and the battery pack 121. That is, the motor housing and the circuit board housing 182 are both disposed between the battery pack 121 and the housing 112 in a direction parallel to the second axis 102. Therefore, the arrangement of the electric wires is shorter, raw materials and the space of the whole machine are saved, and the whole structure is simpler. The motor housing is disposed on the underside of the circuit board housing 182 in a vertical direction perpendicular to the second axis 102, which makes the center of gravity of the snow blower 100 more stable and facilitates sufficient heat dissipation. The motor housing is fixedly attached to housing 112 by fasteners. Specifically, the motor housing is fixedly connected to the shell 112e of the snow thrower by screws. The circuit board housing 182 is fixedly or detachably connected to the motor housing by fasteners such as screws.

The snowplow 100 also includes a first motor housing 131b and a second motor housing 132b, which may also be referred to as first motor housing 131b and second motor housing 132 b. The first motor housing 131b is formed with a first receiving cavity for receiving the first motor 131; the second motor housing 132b is formed with a second receiving cavity for receiving the second motor 132; wherein the second motor housing 132b is provided between the first motor housing 131b and the housing 112. In this embodiment, the circuit board housing 182 is fixedly or detachably connected to the first motor housing 131b by a fastener such as a screw.

The battery pack case 111 is located on the rear side of the second motor case 132 b. The battery pack case 111 is formed with a first air inlet 102a opened rearward; the second motor 132 has a fan and an air guiding cover mounted at the tail thereof, and the second motor housing 132b is formed with an air outlet 102b for allowing the airflow passing through the second motor 132 to be discharged downwards. That is, the first air inlet 102a and the air outlet 102b are provided to the battery pack case 111 and the second motor case 132b, respectively. The circuit board housing 182 is further formed with a second air inlet for allowing the air flowing through the battery pack 121 to enter the circuit board housing 182 to dissipate heat of the circuit board assembly 181, specifically, the first air inlet 102a is disposed at the rear end of the battery pack housing 111, the second air inlet is disposed at the rear end of the circuit board housing 182, and the air outlet 102b is disposed at the lower end of the second motor housing 132 b. As shown in fig. 24, the first air flow a enters from the first air inlet 102a, flows through the battery pack 121, enters the circuit board housing 182 from the second air inlet, flows downward after flowing through the circuit board assembly 181, flows through the first reduction gearbox 143c, flows toward the second motor 132, and is discharged through the air outlet 102b vertically downward through the air guiding cover.

As an alternative embodiment, the first motor 131 is disposed inside the first motor housing 131b, the first fan is connected to the first motor 131, the first motor housing 131b is provided with a third air inlet 102c for air to flow into and a second air outlet 102d for air to flow out, and the air enters from the third air inlet 102c and flows through the first motor 131 and then flows out from the second air outlet 102d, so as to achieve the purpose of dissipating heat for the first motor 131. As another alternative embodiment, the first motor 131 is disposed inside the first motor housing 131b, the first fan is connected to the first motor 131, the first motor housing 131b is provided with a second air outlet 102d for allowing air to flow out, and the air flows in from the assembly gap of each housing and flows out from the second air outlet 102 d. As another alternative embodiment, the first motor 131 is disposed inside the first motor housing 131b, and the first fan is connected to the first motor 131, and the gas inside the first motor housing 131b forms an internal circulation through the stirring of the first fan, so that heat dissipation is achieved through heat exchange between the first motor housing 131b and the outside. It should be noted that the three possible heat dissipation manners may exist simultaneously or may be implemented by selecting one or two manners.

As shown in fig. 25, in another embodiment, a fourth air inlet 102B ' may be further disposed on the circuit board housing 182 ', and the second air flow B enters from the fourth air inlet 102B ', flows through the circuit board assembly and the second motor, and then is exhausted through the air outlet vertically downward through the air guiding cover; the battery pack, the circuit board assembly, the first reduction gearbox and the second motor can be well cooled by the aid of the multiple air flows in different directions.

The circuit board assembly 181 includes a mounting case 181a, a plurality of circuit boards 181b, and a heat dissipation plate 181 c. The mounting box 181a is disposed within the circuit board housing 182; a plurality of circuit boards 181b are mounted to the mounting box 181 a; the heat dissipation plate 181c is connected to at least one circuit board 181 b. The circuit board housing 182 or the mounting box 181a is fixedly connected to the second motor housing 132 b. A plurality of circuit boards 181b are fixedly or detachably attached to the mounting case 181 a.

The snow blower 100 further includes a plurality of electronic components and wires, the electronic components being disposed outside the circuit board housing 182; the wires connect the electronic components, which may be motors, switches, or battery packs 121, to the circuit board assembly 181. The wires are at least partially disposed outside the circuit board housing 182, a first terminal is formed at one end of the wire connected to the circuit board assembly 181, a second terminal connected to the first terminal is formed on the circuit board assembly 181, and the first terminal and the second terminal form a detachable connection. That is, one end of the wire for connecting the circuit board assembly 181 and the circuit board assembly 181 form a detachable connection that can be plugged, so that a user can plug the wire and the circuit board assembly 181 more conveniently, and the maintenance is facilitated.

As shown in fig. 13 and 27, the first motor 131 and the travel transmission assembly 141 are accommodated in a first accommodating cavity formed by a first motor housing 131b, and the first motor housing 131b is fixedly connected to a second motor housing 132b at a rear side of the second motor housing 132 b. Of course, it is understood that in other embodiments, the first motor 131 and the travel drive assembly 141 may be housed in different housings, respectively. Specifically, the first motor housing 131b and the rear cover plate of the second motor housing 132b are coupled by fasteners such as screws. The rear cover plate of the first motor housing 131b is detachable for easy maintenance.

As shown in fig. 2, 17, and 28 to 30, the housing 112 includes an inner surface surrounding a first accommodation space 112b formed for accommodating at least part of the snow-removing paddle 151, and an outer surface opposite to the inner surface. The snowplow 100 also includes a first illumination assembly 193, the first illumination assembly 193 being configured to emit illumination toward the front of the snowplow 100. The first illumination assembly 193 includes a lamp substrate 193a, an illumination lamp 193b, and a mount 193 c. The illumination lamp 193b is mounted to the lamp base plate 193 a; the mount 193c supports the lamp substrate 193 a; wherein the mount 193c is connected to an outer surface of the housing 112. In a direction parallel to the first axis 101, the first illumination assembly 193 is disposed substantially at a middle portion of the housing 112; the first illumination assembly 193 is mounted to the upper side of the housing 112 in the up-down direction perpendicular to the first axis 101. Specifically, the first illumination assembly 193 is mounted above and in a central location to the snowplow blade housing 112 a. An outer surface of the housing 112 is recessed downward to form a mounting groove 112i, and the first illumination module 193 is mounted to the mounting groove 112 i. The mounting slot 112i has a mounting surface 112j for mounting the first lighting assembly 193, and the mounting surface 112j is substantially parallel to the plane on which the snowplow 100 is placed, so that the first lighting assembly 193 can be mounted more stably and firmly and reliably, and the mounting height of the first lighting assembly 193 is reduced to avoid collision with obstacles.

The snowplow 100 also includes power conductors for powering the first lighting assembly 193; the power supply wires are electrically connected to the first illumination assembly 193, and are at least partially arranged along the outer surface of the housing 112. The power conductors electrically connect the circuit board assembly 181 and the first illumination assembly 193, with at least some of the power conductors extending into the circuit board housing 182. In this embodiment, the power supply wires are arranged along the outer surface of the housing 112, the power supply wires have an extending track along the surface of the housing 112, the extending track passes through the snow sweeper housing 112a and the snow sweeper housing 112e, and the projection of the extending track on the plane where the snow sweeper 100 is placed is a continuous straight line segment, and is parallel to or coincident with the first plane 11'. Preferably, the first illumination assembly 193 is substantially symmetrical about the first plane 11'.

The snowplow 100 also includes a wire cover 184, the wire cover 184 being at least partially attached to the outer surface of the housing 112; when the wire cover 184 is mounted to the outer surface of the housing 112, a passage for a wire to pass through is formed between the wire cover 184 and the outer surface. The wire cover 184 is fixedly connected to the housing 112 by fasteners such as screws. The wire cover 184 and the outer surface of the housing 112 surround to form a space for accommodating the power supply wire, and also isolate the power supply wire from the outside, thereby preventing moisture, dust, and the like from entering to some extent. At least a portion of the wire cage 184 extends into the interior of the circuit board housing 182. It should be noted that, since the outer surface of the housing 112 is a curved surface, the wire cover 184 may be a complete cover extending between the first lighting assembly 193 and the circuit board assembly 181, or may be formed by connecting multiple covers. In this embodiment, the wire cover 184 has two end covers connected together.

As shown in fig. 1, 2, and 20, the console 23 is mounted to the operating handle 21, and the console 23 is provided with an operating switch 28 for a user to operate to activate the first illumination assembly 193. The snowplow 100 also includes a second lighting assembly 194, the second lighting assembly 194 being disposed on the operator station 23. The snowplow 100 includes two second illumination assemblies 194, and the two second illumination assemblies 194 are respectively disposed at both sides of the console 23 for widely illuminating the front of the snowplow 100. In this embodiment, the two first illumination assemblies 193 are symmetrically disposed about the first plane 11'. The first illumination assembly 193 includes 6 illumination lamps 193b, and each of the second illumination assemblies 194 includes 3 illumination lamps.

The operating switch 28 is electrically connected to the second illumination assembly 194 to control whether the second illumination assembly 194 is activated. That is, the operation switch 28 is electrically connected to both the first illumination assembly 193 and the second illumination assembly 194. The user can control the first illumination assembly 193 and the second illumination assembly 194 by operating one of the operation switches 28, and the specific control logic is as follows: when the first lighting assembly 193 and the second lighting assembly 194 are not lighted, the operation switch 28 is triggered for the first time, the operation switch 28 controls the first lighting assembly 193 and the second lighting assembly 194 to be lighted, the operation switch 28 is triggered for the second time, the operation switch 28 controls the second lighting assembly 194 to be extinguished, and the operation switch 28 is triggered for the third time, and the second lighting assembly 194 controls the first lighting assembly 193 to be extinguished.

The operating assembly 20 further includes an operating indicator light 195, the operating indicator light 195 is disposed on the operating platform 23, and in this embodiment, the operating indicator light 195 is disposed at a middle position of the operating platform 23 for a user to observe. Operation indicator light 195 control logic: when the safety switch 25 is pressed, the operation indicator lamp 195 is turned green and blinks for 5 seconds, if the snow-sweeping paddle 151 is turned on after five seconds, the current machine state is indicated, and if the snow-sweeping paddle 151 is not turned on, the operation indicator lamp 195 is restored to the state before five seconds. Green light flashing indicates: the safety switch 25 has been triggered and the current state can turn on the snow-removing paddle 151.

As shown in fig. 2 and 7, the snow sweeping system 15 further includes a snow scraping element 192 for scraping the accumulated snow on the ground, and the snow scraping element 192 is disposed at the bottom of the snow sweeping paddle housing 112a and is fixedly or detachably connected to the snow sweeping paddle housing 112a, and in this embodiment, the snow scraping element is a metal member. The distance of the snow scraping element 192 from the ground is greater than 0mm and less than or equal to 15 mm, and the distance of the snow scraping element 192 relative to the ground is adjustable to prevent the snow scraping element 192 from scratching the ground under certain conditions.

The snow sweeping system 15 further comprises a ski boot 191 arranged at the bottom of the two side walls 112c of the snow sweeping paddle housing 112a, the ski boot 191 and the snow sweeping paddle housing 112a are fixedly or detachably connected, the material of the ski boot 191 is not fixed, and in this embodiment, the ski boot 191 is made of metal. The ski boot 191 is used to support the snowplow blade housing 112a, and the ski boot 191 makes surface contact with the ground when the snowplow 100 is in operation. In this embodiment, the ski boot 191 is an axisymmetric structure having an octagonal outline, is symmetric in the up-down direction and the front-rear direction, and is connected to the side wall 112c of the snow paddle housing 112a by a fastener such as a screw. In this embodiment, the screw holes on the surface of the ski boot 191 are waist-shaped holes extending in the vertical direction, and the position of the ski boot 191 in the vertical direction with respect to the snow-sweeping paddle housing 112a can be adjusted by the waist-shaped holes or the like.

As shown in fig. 1 and 13, the center of gravity of the snow sweeper 100 is set to G, and the center of gravity G is located approximately at the middle of the snow sweeper 100 in the front-rear direction. The distance from the grip center of the operating handle 21 to the center of the travel axle 161 in the front-rear direction is L1. The distance from the center of gravity G to the center of the running wheel shaft 161 in the front-rear direction is L2. The center of gravity G is located at a distance L3 from the first axis 101 in the front-rear direction. The distance from the center of the running wheel shaft 161 to the first axis 101 in the front-rear direction is L, L = L3+ L2, and the position of the center of gravity G is located between the first axis 101 and the running wheel shaft 161 in the front-rear direction. In addition, the center of gravity G is set at a preferable position in the above range so that the functional relationship among L1, L2, and L3 is satisfied: y = f (L1, L2, L3). In the up-down direction, the distance from the center of gravity G to the second axis 102 is H, wherein H is more than or equal to 0 and less than or equal to 200 mm. The battery pack 121 is at least partially positioned above the running wheel set 16 and rearward of the second electric machine 132 to balance the center of gravity G.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.