阅读说明：本技术 强制联动式混合动力摩托车 (Forced linkage type hybrid power motorcycle ) 是由 王平 粟强 沈昌群 李江宏 于 2021-09-22 设计创作，主要内容包括：本发明属于摩托车或电动车技术领域,具体涉及一种强制联动式混合动力摩托车,其减速箱的箱体形成左侧平叉；箱体和右侧平叉配合安装后轮毂；输入齿轮,其设置在减速箱内,并与所述汽油动力系统联接；所述输入齿轮的轴孔周侧设置有若干个楔形槽,每个楔形槽内设有一个滚子；滚子可在所述楔形槽内滚动,并贴紧在输出轴的表面,实现输入齿轮和输出轴的动力传递；所述输入齿轮的侧部安装有高温锁紧机构；高温锁紧机构在减速箱内的温度超过设定数值时,驱动滚子锁紧输出轴。在减速箱内的温度超过设定数值时,高温锁紧机构被触发而强制锁定输入齿轮和输出轴,确保动力的传递；从而避免摩托车低速行驶或者碰撞障碍物时,输入齿轮和输出轴的偶发性脱离现象。(The invention belongs to the technical field of motorcycles or electric vehicles, and particularly relates to a forced linkage type hybrid power motorcycle, wherein a box body of a reduction box forms a left bottom fork; the box body and the right bottom fork are matched with each other to be provided with a rear wheel hub; the input gear is arranged in the reduction gearbox and is connected with the gasoline power system; a plurality of wedge-shaped grooves are formed in the periphery of the shaft hole of the input gear, and each wedge-shaped groove is internally provided with a roller; the roller can roll in the wedge-shaped groove and is tightly attached to the surface of the output shaft, so that the power transmission of the input gear and the output shaft is realized; a high-temperature locking mechanism is arranged on the side part of the input gear; when the temperature in the reduction gearbox exceeds a set value, the high-temperature locking mechanism drives the roller to lock the output shaft. When the temperature in the reduction gearbox exceeds a set value, the high-temperature locking mechanism is triggered to forcibly lock the input gear and the output shaft, so that the transmission of power is ensured; therefore, the accidental separation phenomenon of the input gear and the output shaft when the motorcycle runs at low speed or collides with an obstacle is avoided.)

1. Forced linkage type hybrid power motorcycle, which comprises a motorcycle main body (100), wherein a gasoline power system (102) is arranged in the middle of the motorcycle main body (100), and the forced linkage type hybrid power motorcycle is characterized in that the rear part of the motorcycle main body (100) comprises:

the reduction gearbox (2) has a box body forming a left bottom fork; the box body and the right side bottom fork (3) are matched with each other to be provided with a rear wheel hub (1);

the input gear (31) is arranged in the reduction gearbox (2) and is connected with the gasoline power system; an output shaft (61) is arranged in the middle of the input gear (31);

a fixed shaft (62) fixed to the right bottom fork (3); the output shaft (61) and the fixed shaft (62) are spliced along the same axis and can rotate relatively, and the output shaft (61) and the fixed shaft (62) are spliced to form a coupling (6);

a rear hub (1) fixedly mounted on the output shaft (61);

an electric power system (5) fixedly mounted on the fixed shaft (62); an outer rotor (51) of the electric energy power system (5) is connected with the rear wheel hub (1) into a whole;

a plurality of wedge grooves (313) are formed in the periphery of the shaft hole (311) of the input gear (31), and a roller (7) is arranged in each wedge groove (313); the roller (7) can roll in the wedge-shaped groove (313) and is tightly attached to the surface of the output shaft (61) to realize the power transmission of the input gear (31) and the output shaft (61);

a high-temperature locking mechanism (81) is mounted on the side of the input gear (31); the high-temperature locking mechanism (81) drives the roller (7) to lock the output shaft (61) when the temperature in the reduction gearbox (2) exceeds a set value.

2. The forced linkage type hybrid motorcycle according to claim 1, characterized in that the high temperature locking mechanism (81) is a memory spring (880), the memory spring (880) abuts against a top rod (881), and the roller (7) is driven by the top rod (881); or the like, or, alternatively,

the high-temperature locking mechanism (81) comprises a closed cavity (810), liquid with the boiling point of 70-80 is injected into the cavity (810), a corrugated pipe (812) is arranged on one side of the cavity, and the corrugated pipe (812) extends towards the interior of the cavity (810) and the inner end of the corrugated pipe is closed; a push rod (811) is arranged in the corrugated pipe (812), and the outer end of the push rod drives the roller (7).

3. The forced linkage type hybrid motorcycle according to claim 2, wherein the liquid is ethanol.

4. Forced linkage hybrid motorcycle according to claim 1, characterized in that said wedge-shaped groove (313) comprises two side walls (71,72) and a top wall (73); an included angle a between the top wall (73) and the radial direction is 40-65 degrees;

the top wall (73) is gradually expanded outwards along the movement direction (d) of the input gear (31); the distance between the top wall (73) and the output shaft (61) is smaller than the diameter of the roller (7).

5. The forced linkage type hybrid motorcycle according to claim 1, wherein the front end and the rear end of the roller (7) are respectively provided with a fixed retainer ring (9) and a movable retainer ring (8), and the fixed retainer ring (9) and the movable retainer ring (8) are matched to limit the roller (7) in the wedge-shaped groove (313);

a pin shaft (82) extending into the roller (7) is arranged on the movable retainer ring (8), and the outer diameter of the pin shaft (82) is smaller than the inner diameter of the roller (7);

the direction of the high-temperature locking mechanism (81) pushing the fixed retainer ring (8) is opposite to the rotation direction of the input gear (31).

6. The forced linkage type hybrid motorcycle according to claim 1, wherein a spoke is arranged in the middle of the rear wheel hub (1), a motor housing (15) is fixedly arranged on one side of the spoke (14) facing the fixed shaft (62), an electric energy driving cavity (16) is formed between the motor housing (15) and the spoke (14), and the outer rotor (51) and the stator (52) are arranged in the electric energy driving cavity (16);

the stator (52) is fixedly arranged on a fixed shaft (62),

the outer rotor (51) is fixed on the inner wall of the electric energy driving cavity (16).

7. Forced-coupled hybrid motorcycle according to claim 6, characterized in that said reducer comprises an input shaft (10), an intermediate gear (12) and an intermediate shaft (13); the periphery of the intermediate shaft (13) is meshed with the input gear (31), and the outer end of the input shaft (10) is connected to a gasoline power system through a chain wheel.

8. The forced linkage type hybrid motorcycle according to claim 6, wherein the rear hub (1) comprises a spoke (14) and a rim, the outer side of the rim is used for mounting the tire (4), the spoke (14) protrudes to one side to form a mounting plane (141), the motor housing (15) is molded with a connecting ring (441), the connecting ring (441) is connected to the mounting plane (13) through a fastener, and a waterproof pad (45) is pressed between the connecting ring (441) and the mounting plane (141).

9. The forced linkage type hybrid motorcycle according to claim 6, wherein a through hole (444) for the fixed shaft (62) to pass through is formed in the middle of the motor housing (15), and a first bearing (56) is arranged at the through hole (444);

the output shaft (61) partially extends into the fixed shaft (62), more than one second bearing (52) is sleeved at the overlapping section between the output shaft (61) and the fixed shaft (62), and a third bearing (55) is arranged between the outer wall of the inner end of the fixed shaft (62) and the spoke (14);

a mounting seat (17) is formed in the middle of the spoke (14), and a brake disc (11) is arranged on the mounting seat (17);

a wire guide hole (53) is formed in the fixed shaft (62), one end of the wire guide hole (53) is conducted to the electric energy driving cavity (16), and the other end of the wire guide hole is conducted to the outer end part of the fixed shaft (62);

the lead wire (54) of the stator is connected with an external power supply through the lead wire hole (53).

Technical Field

The invention belongs to the technical field of motorcycles or electric vehicles, and particularly relates to a forced linkage type hybrid power motorcycle.

Background

A hub motor is arranged on a rear wheel hub of a motorcycle, power is provided for the motorcycle through a mode that an internal combustion engine and the hub motor are mutually matched, the use frequency of the internal combustion engine is reduced, and therefore unnecessary fuel consumption is reduced.

CN104163226A discloses a rear wheel motor integrated structure for a hybrid motorcycle, which is similar to the hub motor of an electric vehicle, and the hub motor is directly installed inside the rear wheel, although the speed reducing mechanism is saved, because the hub motor is located inside the wheel, if the hub motor fails, the dismounting is troublesome.

In addition, when the motor assembly is used as a main power source, the rotating speed of the motor assembly is higher than that of a gasoline power system, so that the motor assembly generates extra load and wastes certain electric energy.

In addition, when the motorcycle climbs a slope, if the motorcycle collides with a small obstacle, the power can be lost instantly, and the problem also needs to be solved.

Disclosure of Invention

The invention aims to provide a forced linkage type hybrid power motorcycle which is simple in structure and high in electric energy use efficiency.

The purpose of the invention is realized as follows:

force coordinated type hybrid motorcycle, including the motorcycle main part, the middle part of motorcycle main part is provided with petrol driving system, the rear portion of motorcycle main part includes:

the box body of the reduction box forms a left bottom fork; the box body and the right bottom fork are matched with each other to be provided with a rear wheel hub;

the input gear is arranged in the reduction gearbox and is connected with the gasoline power system; an output shaft is arranged in the middle of the input gear;

the fixed shaft is fixed on the right flat fork; the output shaft and the fixed shaft are spliced along the same axis and can rotate relatively, and the output shaft and the fixed shaft are spliced to form a coupling;

a rear hub fixedly mounted on the output shaft;

the electric power system is fixedly arranged on the fixed shaft; the outer rotor of the electric power system is connected with the rear wheel hub into a whole;

a plurality of wedge-shaped grooves are formed in the periphery of the shaft hole of the input gear, and each wedge-shaped groove is internally provided with a roller; the roller can roll in the wedge-shaped groove and is tightly attached to the surface of the output shaft, so that the power transmission of the input gear and the output shaft is realized;

a high-temperature locking mechanism is arranged on the side part of the input gear; when the temperature in the reduction gearbox exceeds a set value, the high-temperature locking mechanism drives the roller to lock the output shaft.

Preferably, the high-temperature locking mechanism is a memory spring, the memory spring abuts against a top rod, and the top rod drives the roller; or the like, or, alternatively,

the high-temperature locking mechanism comprises a closed cavity, liquid with a boiling point of 70-80 is injected into the cavity, a corrugated pipe is arranged on one side of the cavity, the corrugated pipe extends towards the interior of the cavity, and the inner end of the corrugated pipe is closed; an ejector rod is arranged in the corrugated pipe, and the outer end of the ejector rod drives the roller.

Preferably, the liquid is ethanol.

Preferably, the wedge-shaped groove comprises two side walls and a top wall; an included angle a between the top wall and the radial direction is 40-65 degrees;

the top wall gradually expands outwards along the movement direction d of the input gear; the distance between the top wall and the output shaft is less than the diameter of the roller.

Preferably, the front end and the rear end of the roller are respectively provided with a fixed check ring and a movable check ring, and the fixed check ring and the movable check ring are matched to limit the roller in the wedge-shaped groove;

a pin shaft extending into the roller is arranged on the movable retainer ring, and the outer diameter of the pin shaft is smaller than the inner diameter of the roller;

the direction of the high-temperature locking mechanism pushing the fixed check ring is opposite to the rotation direction of the input gear.

Preferably, a spoke is arranged in the middle of the rear wheel hub, a motor housing is fixedly arranged on one side of the spoke facing the fixed shaft, an electric energy driving cavity is formed between the motor housing and the spoke, and the outer rotor and the stator are arranged in the electric energy driving cavity;

the stator is fixedly arranged on the fixed shaft,

the outer rotor is fixed on the inner wall of the electric energy driving cavity.

Preferably, the speed reducer includes an input shaft, an intermediate gear, and an intermediate shaft; the periphery of the intermediate shaft is meshed with the input gear, and the other end of the input shaft is connected to a gasoline power system through a chain wheel.

Preferably, the rear wheel hub comprises a spoke and a rim, the outer side of the rim is used for mounting the tire, the spoke protrudes towards one side to form a mounting plane, the motor housing is formed with a connecting ring, the connecting ring is connected onto the mounting plane through a fastener, and a waterproof pad is arranged between the connecting ring and the mounting plane in a pressing mode.

Preferably, a through hole for the fixed shaft to pass through is formed in the middle of the motor housing, and a first bearing is arranged at the through hole;

the output shaft part extends into the fixed shaft, more than one second bearing is sleeved at the overlapping section between the output shaft and the fixed shaft, and a third bearing is arranged between the outer wall of the inner end of the fixed shaft and the spoke;

a mounting seat is formed in the middle of the spoke, and a brake disc is arranged on the mounting seat;

a wire guide hole is formed in the fixed shaft, one end of the wire guide hole is communicated with the electric energy driving cavity, and the other end of the wire guide hole is communicated with the outer end part of the fixed shaft;

and the lead of the stator is connected with an external power supply through the lead hole.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that:

after the gasoline power system works for a period of time, the temperature in the reduction gearbox can be gradually increased to about 80 ℃. When the temperature in the reduction gearbox exceeds a set value, the high-temperature locking mechanism is triggered to forcibly lock the input gear and the output shaft, so that the transmission of power is ensured; therefore, the accidental separation phenomenon of the input gear and the output shaft when the motorcycle runs at low speed or collides with an obstacle is avoided.

The coupling comprises an output shaft and a fixed shaft, wherein the output shaft and the fixed shaft are spliced along the same axis and can rotate relatively; the outer end of the output shaft is connected with the gasoline power system, and the rear wheel hub is sleeved on the output shaft and linked; the fixed shaft is provided with an electric power system, and an outer rotor of the electric power system is connected with the rear wheel hub into a whole; the design of the coupling shaft enables the rear wheel hub to be more convenient to mount, and the electric power system is arranged on the side part of the rear wheel hub, so that the mounting and maintenance are convenient; the rear hub also has a greater load capacity.

When the electric energy power system is used as main power, the torque given to the input gear by the gasoline power system is weaker or the torque is not directly input, the rotating speed of the output shaft is higher than that of the input gear, so that the roller is separated from the output shaft, the electric energy power system completely acts on the rear wheel hub, the load of the electric energy power system is minimized and only used for the rear wheel to run, and therefore the electric power efficiency of the hybrid motorcycle is improved, and the endurance is stronger;

when a gasoline power system is used as power, the input gear rotates at high speed, the swinging rod locks the output gear and the output shaft mutually through the roller under the action of centrifugal force, the input gear and the output shaft cannot or cannot easily move relatively, and power transmission is realized.

The inner diameter e of the roller is larger than the outer diameter f of the pin shaft, the actual movement space of the roller is reduced due to the design, and the depth of the wedge-shaped groove can be correspondingly reduced.

An included angle a between the top wall of the wedge-shaped groove and the radial direction is 40-65 degrees, and the top wall gradually expands outwards along the movement direction d of the input gear; the distance between the top wall and the output shaft is less than the diameter of the roller. When the design enables the input gear to rotate fast, the pressing effect of the roller and the output shaft can be achieved without a swing rod.

The spoke is arranged in the middle of the rear wheel hub, a motor housing is fixedly arranged on one side of the spoke facing a fixed shaft, an electric energy driving cavity is formed between the motor housing and the spoke, and the outer rotor and the stator are arranged in the electric energy driving cavity; a speed reducer is arranged between the gasoline power system and the input gear, and the speed reducer and the electric power system play a role in balancing the center of gravity in the whole framework.

Drawings

FIG. 1 is a schematic view of a motorcycle of the present invention;

FIG. 2 is a schematic view of the rear wheel attachment of the motorcycle of the present invention;

FIG. 3 is a cross-sectional view of one of the hybrid mechanisms of the present invention;

FIG. 4 is a second cross-sectional view of the hybrid mechanism of the present invention;

fig. 5 is a cross-sectional view of an exploded view of the motor assembly of the hybrid mechanism of the present invention;

FIG. 6 is a schematic view of the input gear of the present invention;

FIG. 7 is a schematic view of the operating condition of the roller of the present invention;

fig. 8 is a schematic view of a high-temperature locking mechanism according to embodiment 1 of the present invention.

Fig. 9 is a schematic view of a high-temperature locking mechanism according to embodiment 2 of the present invention.

Detailed Description

The invention will now be further described in the following with reference to specific embodiments, with reference to fig. 1-9:

in the case of the example 1, the following examples are given,

the forced linkage type hybrid power motorcycle comprises a motorcycle main body 100, wherein a gasoline power system 102 and a battery 101 are arranged in the middle of the motorcycle main body 100, and the rear part of the motorcycle main body 100 comprises: the structure of the gasoline power system is basically the same as that of the internal combustion engine of the existing motorcycle;

the reduction box 2, its container body forms the left side chain stay; the box body and the right bottom fork 3 are matched with a rear hub 1;

the input gear 31 is arranged in the reduction gearbox 2 and is connected with the gasoline power system; the middle part of the input gear 31 is provided with an output shaft 61;

a fixed shaft 62 fixed to the right bottom fork 3; the output shaft 61 and the fixed shaft 62 are spliced along the same axis and can relatively rotate, and the output shaft 61 and the fixed shaft 62 are spliced to form a coupling 6; the design of the coupling 6 can stably maintain the gap between the outer rotor 51 (mainly rotor magnetic steel) and the stator, so as to overcome the problem of the transmission efficiency of the motor. If the gap between the rotor magnetic steel and the stator cannot be maintained stably, not only is it difficult to maintain the rotation of the motor assembly continuously, but also even in the case of continuous rotation, the motor torque obtained with respect to the consumed electric power is significantly reduced, resulting in a reduction in efficiency;

a rear hub 1 fixedly mounted on the output shaft 61;

an electric power system 5 fixedly mounted on the fixed shaft 62; the outer rotor 51 of the electric power system 5 is connected with the rear hub 1 into a whole;

a plurality of wedge grooves 313 are arranged on the periphery of the shaft hole 311 of the input gear 31, and a roller 7 is arranged in each wedge groove 313; the roller 7 can roll in the wedge-shaped groove 313 and is tightly attached to the surface of the output shaft 61, so that the power transmission between the input gear 31 and the output shaft 61 is realized; when using the electric machine assembly as the primary power, the gasoline powered system imparts a relatively weak torque to the input gear or does not directly input torque. The planetary gear assembly can be arranged in the gasoline power system, when the rear wheel hub is not required to be driven, torque is not directly input to the rear wheel hub, and the design is the prior art of the motorcycle, so that the design is not developed in detail.

A high-temperature locking mechanism 81 is arranged on the side part of the input gear 31; the high-temperature locking mechanism 81 drives the roller 7 to lock the output shaft 61 when the temperature in the reduction gearbox 2 exceeds a set value. Therefore, the accidental separation phenomenon of the input gear and the output shaft when the motorcycle runs at low speed or collides with an obstacle is avoided. If the motorcycle collides with a small step in the climbing process, the collision can cause the motorcycle to retreat for a certain distance, and the retreat distance is very short; however, the input gear and the output shaft may be disengaged, and the input power may be momentarily cut off, thereby causing a safety hazard. The design can ensure the input power and overcome the problem.

As shown in fig. 8, the high-temperature locking mechanism 81 includes a sealed cavity 810, a liquid with a boiling point of 70-80 is injected into the cavity 810, a bellows 812 is disposed at one side of the cavity, the bellows 812 extends into the cavity 810, and the inner end of the bellows is sealed; a jack 811 is provided in the bellows 812, the outer end of which drives the roller 7. The liquid is preferably ethanol, which has a boiling point of 78 degrees celsius. When the working temperature of the reduction gearbox is higher than the boiling point, the pressure in the cavity is increased, so that the bellows 812 drives the ejector pin 811 to extend outwards. If the gasoline power system 102 stops inputting power, the temperature of the reduction gearbox is rapidly reduced to below 60 ℃ due to air cooling, and the high-temperature locking mechanism 81 is restored to the original state, so that the input gear is separated from the output shaft.

The reduction gearbox and the engine compartment are tightly attached to each other, so that heat can be conducted; the heat conduction strip can be further arranged to guide the heat of the engine compartment, so that the contact area between the reduction gearbox and the air is larger, and the heat dissipation effect is better;

it should be pointed out that the ethanol content in the cavity is actually relatively low, even if a leakage occurs accidentally, because the leakage is slow, the ethanol will gradually volatilize and dissolve in the engine oil inside the retarder, without the associated risks.

As shown in fig. 7, the left side of the wedge-shaped groove 313 almost fits the surface of the roller 7 for the design consideration of the transmission effect; therefore, the roller can be better driven by the pin shaft only by making a gap between the inner wall of the roller and the pin shaft; the actual motion track of the pin shaft is in the c direction or the b direction.

Preferably, the wedge-shaped groove 313 comprises two side walls 71,72 and a top wall 73; an included angle a between the top wall 73 and the radial direction is 40-65 degrees; such that the rollers tend to grip the output shaft as the input gear rotates.

The top wall 73 is gradually flared outward along the moving direction d of the input gear 31; the distance between the top wall 73 and the output shaft 61 is smaller than the diameter of the roller 7. When the design enables the input gear to rotate fast, the pressing effect of the roller and the output shaft can be achieved.

Preferably, the front end and the rear end of the roller 7 are respectively provided with the movable retainer ring 8 and the fixed retainer ring 9. The fixed retainer ring 9 and the movable retainer ring 8 are matched to limit the roller 7 in the wedge-shaped groove 313; the movable retainer ring 8 is provided with a pin shaft extending into the roller 7, and the outer diameter of the pin shaft is smaller than the inner diameter of the roller 7; the high temperature locking mechanism 81 pushes the movable retainer ring 8 in the direction opposite to the rotation direction of the input gear 31. The outer end of the ejector rod can be provided with a hook body so as to hook the movable retainer ring 8 and forcibly reset. When the vehicle is braked, the movable retainer ring 8 can also reset based on inertia; the movable retainer ring 8 is provided with an arc-shaped hole 83, and a screw 84 penetrates through the arc-shaped hole 83 and positions the movable retainer ring 8 on the input gear 31; the movable retainer ring 8 is also provided with an installation groove 85, and the high-temperature locking mechanism 81 is arranged in the installation groove 85 and fixed on the input gear 31;

preferably, a spoke is arranged in the middle of the rear hub 1, a motor housing 15 is fixedly arranged on one side of the spoke 14 facing the fixed shaft 62, an electric energy driving cavity 16 is formed between the motor housing 15 and the spoke 14, and the outer rotor 51 and the stator 52 are arranged in the electric energy driving cavity 16;

the stator 52 is fixedly mounted on a fixed shaft 62,

the outer rotor 51 is fixed to the inner wall of the electric power driving chamber 16.

Preferably, the reducer 2 comprises an input shaft 10, an intermediate gear 12 and an intermediate shaft 13; the periphery of the intermediate shaft 13 is meshed with the input gear 31, and the outer end of the input shaft 10 is connected to a gasoline power system through a chain wheel;

preferably, the rear hub 1 includes a spoke 14 and a rim, the outer side of the rim is used for mounting the tire 4, the spoke 14 protrudes to one side to form a mounting plane 141, the motor housing 15 is molded with a connection ring 441, the connection ring 441 is connected to the mounting plane 13 through a fastener, and a waterproof pad 45 is pressed between the connection ring 441 and the mounting plane 141. Prevent rainwater from entering into the interior along the gap at the joint of the fixing frame and the spoke to influence the motor assembly, and guarantee the assembly. In the use, if motor element broke down, can directly dismantle the fastener to dismantle motor housing, so that direct detection or dismantlement to inside motor element.

Preferably, a through hole 444 for the fixed shaft 62 to pass through is formed in the middle of the motor housing 15, and the first bearing 56 is disposed at the through hole 444.

Preferably, the output shaft 61 partially extends into the fixed shaft 62, more than one second bearing 52 is sleeved at the overlapping section between the output shaft 61 and the fixed shaft 62, and a third bearing 55 is arranged between the outer wall of the inner end of the fixed shaft 62 and the spoke 14; the design ensures that the gasoline power system and the electric energy power system 5 do not interfere with each other and can respectively transmit torque to the rear wheel hub. Meanwhile, the formed coupling 6 has better strength and can better support the rear hub.

A mounting seat 17 is formed in the middle of the spoke 14, and a brake disc 11 is arranged on the mounting seat 17; brake disc and motor element are located rear wheel hub's the left and right sides respectively for motor element only need dismantle less part when breaking down, can not influence the brake disc yet, and the structure is more reasonable.

A wire guide hole 53 is formed in the fixed shaft 62, one end of the wire guide hole 53 is conducted to the electric energy driving cavity 16, and the other end of the wire guide hole 53 is conducted to the outer end part of the fixed shaft 62;

the lead wires 54 of the stator are connected to an external power source through the lead wire holes 53. The wire guide 53 (i.e., the threading channel) is directly arranged in the fixing shaft 62, so that reasonable wiring can be realized, and the power line can be prevented from being exposed and damped.

Embodiment 2 is substantially the same as embodiment 1, except that as shown in fig. 9, the high temperature locking mechanism 81 is a memory spring 880, the memory spring 880 abuts against a top rod 881, and the top rod 881 drives the roller 7.

Generally, even in a high temperature environment in summer, when the gasoline power system does not work, the internal temperature of the speed reducer does not exceed 60 degrees, and therefore, the trigger temperature of the high-temperature locking mechanism 81 can be set between 60 and 80 degrees.

When the gasoline power system works, the temperature in the speed reducer can be gradually increased to about 80 ℃, and the difference between winter and summer is not large.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.