阅读说明：本技术 一种绿化综合养护车用割草头机具 (Grass cutting head machine tool for greening comprehensive maintenance vehicle ) 是由 岳慧斌 邓晓飞 施俊 顾清亚 陈辰 陈昌泉 姜亚峰 徐震 曹雪娟 于 2020-05-15 设计创作，主要内容包括：本发明公开了一种绿化综合养护车用割草头机具,割草头机具安装在工作臂的末端,割草头机具包括罩壳、刀轴总成、支承滚总成和传动机构；罩壳用于与工作臂连接,刀轴总成和支承滚总成均设在罩壳内侧,传动机构设在罩壳侧边,刀轴总成与传动机构传动连接。该割草头机具的机构设置合理,特别适于植被低矮区域的修剪作业,由于刀轴上所附刀片为流线状设计且为经过热处理的耐磨钢材质制成,利用该机具进行道路两侧及边坡内的绿化植被、杂草、灌木等的打草修剪工作时,被切割植物的直径最大可达20 mm,作业效率高且适用性更广。(The invention discloses a grass cutting head machine tool for a greening comprehensive maintenance vehicle, which is arranged at the tail end of a working arm and comprises a housing, a cutter shaft assembly, a supporting roller assembly and a transmission mechanism; the housing is used for being connected with the working arm, the cutter shaft assembly and the supporting roller assembly are arranged on the inner side of the housing, the transmission mechanism is arranged on the side edge of the housing, and the cutter shaft assembly is in transmission connection with the transmission mechanism. The grass cutting head machine tool is reasonable in mechanism arrangement and particularly suitable for trimming low vegetation areas, blades attached to cutter shafts are designed in a streamline shape and are made of heat-treated wear-resistant steel, when the machine tool is used for grass cutting and trimming of greening vegetation, weeds, shrubs and the like on two sides of a road and in a side slope, the diameter of cut plants can reach 20 mm to the maximum, the operation efficiency is high, and the applicability is wider.)

1. A grass cutting head machine tool for a greening comprehensive maintenance vehicle is characterized in that the grass cutting head machine tool (3) is installed at the tail end of a working arm (2), and the grass cutting head machine tool (3) comprises a housing (31), a cutter shaft assembly (32), a supporting roller assembly (33) and a transmission mechanism (34); the housing (31) is used for being connected with the working arm (2), the cutter shaft assembly (32) and the supporting roller assembly (33) are arranged on the inner side of the housing (31), the transmission mechanism (34) is arranged on the side edge of the housing (31), and the cutter shaft assembly (32) is in transmission connection with the transmission mechanism (34);

the housing (31) is provided with a front curtain (311), a rear curtain (312) and a mounting pin (313); the front curtain (311) is installed at the front part of the housing (31) and has flexibility, the rear curtain (312) is installed at the rear part of the housing (31), and the installation pin (313) is arranged at the top part of the housing (31);

the cutter shaft assembly (32) comprises a cutter shaft (321), a bearing I (322), a bearing II (323) and a blade (324), wherein two ends of the cutter shaft (321) are movably arranged on the housing (31) through the bearing I (322) and the bearing II (323) respectively; the plurality of blades (324) are regularly distributed on the cutter shaft (321) through connecting pins (325) fixedly connected with the cutter shaft (321), the shape of the blades (324) is streamline design, and the installation axis is parallel to the blade edge surface;

the supporting roller assembly (33) comprises a roller (331), a bearing III (332) and a bearing IV (333); two ends of the roller (331) are respectively rotatably connected to the housing (31) through a bearing III (332) and a bearing IV (333), and two ends of the roller (331) are correspondingly provided with height adjusting devices.

2. A grass cutting head implement for a green utility vehicle as claimed in claim 1, wherein the blades (324) are rotatable about the connecting pin (325), and the locus of rotation of adjacent blades (324) has an overlapping amount.

3. A grass cutting head implement for a green combined maintenance vehicle as claimed in claim 1, wherein the housing (31) is provided at the top thereof with a plurality of mounting holes (314) along the width direction thereof, the mounting holes (314) are provided in two rows, the mounting seat (315) is connected to the mounting holes (314) by fasteners, and the mounting pin (313) is provided on the mounting seat (315).

4. The grass cutting head machine for a greening combined maintenance vehicle as claimed in claim 1, wherein both ends of the connecting pin (325) are provided with a stopper piece (326) fixed with the fixing seat (327) for preventing the connecting pin (325) from rotating.

5. The grass-cutting head implement for a greening combined maintenance vehicle as claimed in claim 1, wherein the blade (324) is made of wear-resistant steel material and is heat-treated.

6. A grass cutting head unit for a green utility vehicle as claimed in claim 1, wherein the height adjusting means comprises a height adjusting plate I (334) and a height adjusting plate II (335) having the same structure, roller connecting holes (3341) formed in the height adjusting plate I (334) and the height adjusting plate II (335) are correspondingly connected to the end of the roller (331), and connecting hole groups (3342) connected to the adjusting hole groups formed in the housing (31) are formed in the height adjusting plate I (334) and the height adjusting plate II (335).

7. A grass cutting head machine for a comprehensive maintenance vehicle for afforesting as claimed in claim 6, wherein three sets of adjustment hole groups are provided on the housing (31) in the order from top to bottom, respectively a lower adjustment hole group (316), a middle adjustment hole group (317) and an upper adjustment hole group (318), and the connection hole group (3342) is correspondingly connected to the corresponding adjustment hole group to adjust the cutting distance of the cutter shaft (321).

8. A grass cutting head implement for a green combined maintenance vehicle as claimed in claim 1, characterized in that the transmission mechanism (34) comprises a motor (341), a coupling (342) and a guard (343); the motor (341) is connected with the cutter shaft (321) through a coupling (342), and the shield (343) is connected with the housing (31).

Technical Field

The invention belongs to the field of road greening maintenance and landscaping, and particularly relates to a grass cutting head machine tool for a comprehensive greening maintenance vehicle.

Background

A comprehensive greening maintenance vehicle is also called a greening pruning vehicle, is a special maintenance vehicle which is specially designed and produced aiming at greening pruning of a middle hedge, a side slope, a first-level road and a second-level road of a highway and the like, and is mainly used for municipal greening and greening pruning on a highway section. The road greening maintenance not only relates to the beauty of the environment, air purification, but also influences the vision of a driver, can reduce the fatigue of the driver, can adsorb waste gas and smoke dust discharged by vehicles, is also very important for preventing dazzling during night driving, and plays an important role in ensuring the driving safety and the like.

The grass cutting head machine is one of multifunctional machines equipped on the greening comprehensive maintenance vehicle, is arranged at the tail end of a working arm, enables the grass cutting head to work at the position of a road side or a side slope through the actions of stretching, sliding, lifting and the like of the working arm, and is used for crushing and trimming greening vegetation, weeds, shrubs and the like on the two sides of the road and in the side slope.

There are many common lawn mowers: such as a handheld rotary mower, a reciprocating mower, a drum mower, a rotary mower and the like, most of the handheld rotary mower is used for cutting pasture and carrying out landscaping trimming work, can cut and air weeds in pasture or gardens, and uses recovered hay for livestock feed.

Reciprocating type mowers, roller type mowers and rotary type mowers are generally used for mowing operations of pastures or lawns, and are not suitable for mechanized operations of the above devices because the ground is uneven and has certain gradient when vegetation is trimmed on two sides or slopes of roads.

At present, most of mowers for trimming greening vegetation, weeds, shrubs and the like on two sides of roads and in side slopes are handheld rotary mowers, and some of the mowers are provided with cutting blades and can be used for cutting thick shrubs, but the risk of cutter breakage is very easy to occur when the mowers touch rigid obstacles in the using process, so that the use safety is poor; some handheld rotary mowers use high-strength nylon ropes, steel wire ropes or iron chains as cutting parts, have certain flexibility, reduce the risk of knife breakage when touching rigid obstacles, but have poor durability and are easy to break after long-term use. Moreover, the diameter of the plants suitable for cutting by the mower is generally not more than 10 mm, and the mower is difficult to smoothly operate hard bushes. When an operator operates the handheld rotary mower to trim in a road slope, safety accidents are easy to happen due to reasons of operating environments, equipment and the like, and the operating efficiency is low.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a grass cutting head machine tool for a greening comprehensive maintenance vehicle, which has the advantages of large cutting diameter, adjustable trimming height, good wear resistance of a blade, great reduction of the risk of cutter breakage and remarkable improvement of use safety.

The main technical scheme of the invention is as follows: a grass cutting head machine tool for a greening comprehensive maintenance vehicle is arranged at the tail end of a working arm and comprises a housing, a cutter shaft assembly, a supporting roller assembly and a transmission mechanism; the housing is used for being connected with the working arm, the cutter shaft assembly and the supporting roller assembly are arranged on the inner side of the housing, the transmission mechanism is arranged on the side edge of the housing, and the cutter shaft assembly is in transmission connection with the transmission mechanism; the housing is provided with a front curtain, a rear curtain and a mounting pin; the front curtain is installed at the front part of the housing and has flexibility, the rear curtain is installed at the rear part of the housing, and the installation pin is arranged at the top of the housing; the cutter shaft assembly comprises a cutter shaft, a bearing I, a bearing II and a blade, wherein two ends of the cutter shaft are movably arranged on the housing through the bearing I and the bearing II respectively; the blades are regularly distributed on the cutter shaft through connecting pins fixedly connected with the cutter shaft, the blades are in streamline design, and the installation axis is parallel to the blade edge surfaces; the supporting roller assembly comprises a roller, a bearing III and a bearing IV; two ends of the roller are respectively rotatably connected to the housing through a bearing III and a bearing IV, and two ends of the roller are correspondingly provided with a height adjusting device.

Furthermore, the blades can rotate around the connecting pin, and the rotating tracks of the adjacent blades have overlapping amount;

furthermore, a plurality of mounting holes are formed in the top of the housing along the width direction of the housing, the mounting holes are arranged in two rows, the mounting seat is connected with the mounting holes through fasteners, and the mounting pins are arranged on the mounting seat.

Furthermore, both ends of the connecting pin are provided with stop pieces which are fixed with the fixed seat and prevent the connecting pin from rotating.

Further, the blade is made of wear-resistant steel materials and is subjected to heat treatment.

Furthermore, height adjusting device includes height adjusting plate I and height adjusting plate II that the structure is the same, and the cylinder connecting hole on height adjusting plate I and the height adjusting plate II corresponds with the cylinder tip and is connected, is equipped with the connecting hole group of being connected with corresponding one side regulation hole group on the housing on height adjusting plate I and height adjusting plate II.

Furthermore, three groups of adjusting hole groups are arranged on one side of the housing from top to bottom, namely a lower adjusting hole group, a middle adjusting hole group and an upper adjusting hole group, and the connecting hole groups are correspondingly connected with the corresponding adjusting hole groups to adjust the cutting distance of the cutter shaft.

Further, the transmission mechanism comprises a motor, a coupling and a shield; the motor is connected with the cutter shaft through a coupler, and the shield is connected with the housing.

The invention has the beneficial effects that:

1. the invention discloses a grass cutting head machine tool for a greening comprehensive maintenance vehicle, which is reasonable in mechanism arrangement and particularly suitable for trimming low vegetation areas, and when the machine tool is used for trimming greening vegetation, weeds, shrubs and the like on two sides of a road and in a side slope, the diameter of the cut plants can reach 20 mm to the maximum extent, the working efficiency is high, and the applicability is wider;

2. by adding the height adjusting plate, the trimming height of the machine can be adjusted according to different working conditions when the machine is used, and the flexibility is obviously improved;

3. the blade used for rotary cutting is made of wear-resistant steel and is subjected to heat treatment, so that the flexibility is ensured, the wear resistance is good, the possibility of the occurrence of the phenomenon of cutter breakage is reduced, and the service life of the blade is prolonged;

4. the blade passes through connecting pin with rotatory arbor and is equipped with the locking plate in the side, has good dodging nature in specific range when guaranteeing good cutting performance, very big reduction the risk nature of disconnected sword, operation personnel operate the grass cutting head machines in the driver's cabin, and the security is fabulous.

Drawings

FIG. 1 is a schematic structural view of a greening comprehensive maintenance vehicle;

FIG. 2 is a schematic axial view of a grass cutting head implement for a greening comprehensive maintenance vehicle;

FIG. 3 is a schematic left view of a grass cutting head implement for a greening maintenance vehicle;

FIG. 4 is a right side view of a grass cutting head implement for a greening maintenance vehicle;

FIG. 5 is a schematic top view of a grass cutting head implement for a greening maintenance vehicle;

FIG. 6 is a schematic view of the construction of the arbor shaft assembly and the backup roller assembly;

FIG. 7 is an axial side view of the arbor;

FIG. 8 is a schematic structural view of the height-adjusting plate I;

FIG. 9 is a schematic view of the internal structure of a grass cutting head implement for a greening maintenance vehicle;

wherein, 1-afforest the comprehensive maintenance car, 2-the working arm, 3-the grass cutting head machines;

31-a housing, 32-a cutter shaft assembly, 33-a supporting roller assembly and 34-a transmission mechanism;

311-front curtain, 312-rear curtain, 313-mounting pin, 314-mounting hole, 315-mounting seat, 316-lower adjustment hole set, 317-middle adjustment hole set, 318-upper adjustment hole set;

321-cutter shaft, 322-bearing I, 323-bearing II, 324-blade, 325-connecting pin, 326-stop piece and 327-fixed seat;

331-a roller, 332-a bearing III, 333-a bearing IV, 334-an elevation adjusting plate I, 335-an elevation adjusting plate II;

3341-roller connection hole, 3342-connection hole group;

341 motor, 342 coupling, 343 shield.

Detailed Description

The following examples further illustrate the present invention but are not to be construed as limiting the invention. Modifications and substitutions to methods, procedures, or conditions of the invention may be made without departing from the spirit of the invention.

In order to realize safe and high-performance operation of the grass cutting head machine on the comprehensive greening maintenance vehicle and further improve the working efficiency and the flexibility and the convenience of use of the comprehensive greening maintenance vehicle, the grass cutting head machine for the comprehensive greening maintenance vehicle is provided in the embodiment, and the structure of the rest parts of the conventional comprehensive greening maintenance vehicle is not specifically described herein because the main improvement point is the improvement of the structure of the grass cutting head machine, but the function realization of the grass cutting head machine is not limited.

As shown in fig. 1, the grass cutting head machine 3 is one of the multifunctional machines equipped on the greening maintenance truck, is installed at the end of the working arm 2, and is mainly used for operating the grass cutting head machine 3 at the roadside or the side slope position through the actions of extension, sliding, lifting and the like of the working arm 2, and is used for crushing and trimming greening vegetation, weeds, shrubs and the like on both sides of the road and in the side slope.

As shown in fig. 2-5, the grass cutting head implement 3 comprises a main housing 31, a cutter shaft assembly 32, a supporting roller assembly 33 and a transmission mechanism 34; the housing 31 is used for being connected with the working arm 2, the cutter shaft assembly 32 and the supporting roller assembly 33 are arranged on the inner side of the housing 31, the transmission mechanism 34 is arranged on the side edge of the housing 31, and the cutter shaft assembly 32 is in transmission connection with the transmission mechanism 34 for operation.

As shown in fig. 3 and 4, the housing 31 is provided with a front curtain 311, a rear curtain 312 and a mounting pin 313;

the front curtain 311 is installed at the front part of the housing 31, the front curtain 311 has certain flexibility, so that the plants in front can smoothly enter the cavity between the front curtain 311 and the cutter shaft assembly 32 through the front curtain 311 during operation, as shown in a part C in fig. 9, the plants are not directly pressed down or broken to influence normal cutting operation, the rotating blade can more easily cut the plants entering the cavity C, the width of the cavity C meets the requirement that the swinging range (the area with the sector-shaped section indicated by A in fig. 9) of the front curtain 311 and the rotating range (the area with the circular section indicated by B in fig. 9) of the blade do not overlap and have certain distance, the blade is prevented from damaging the front curtain 311 during rotation, and the rotating materials are prevented from flying out from the front part; the front part of the grass cutting head machine is lower, so the machine is more suitable for trimming in low vegetation areas, and the rear curtain 312 is arranged at the rear part of the housing 31 to prevent the cut and rotated materials from flying out from the rear part; a mounting pin 313 is provided at the top of the housing 31 for quick-change fixed connection with the working arm 2.

The top of the housing 31 is provided with a plurality of mounting holes 314 along the width direction, the mounting holes 314 are arranged in two rows, the mounting seat 315 is connected with the mounting holes 314 through fasteners, the mounting pins 313 are arranged on the mounting seat 315, the position of the mounting seat 315 can be adjusted through the connection of the mounting seat 315 and the mounting holes 314 at different positions, and therefore the grass mower 3 has a wider operation range, the range is large when the mounting seat 315 is at the rightmost side, and the range is small when the mounting seat 315 is at the leftmost side.

As shown in fig. 6, the arbor shaft assembly 32 includes an arbor shaft 321, a bearing I322, a bearing II 323, and a blade 324.

Two ends of the cutter shaft 321 are movably arranged on the housing 31 through a bearing I322 and a bearing II 323 respectively, so that the cutter shaft 321 can smoothly rotate at a high speed for a long time; as shown in fig. 7, a plurality of blades 324 are regularly distributed on the cutter shaft 321 through connecting pins 325 fixedly connected with the cutter shaft 321 to maintain dynamic balance during high-speed rotation; the blades 324 are rotatable about the connecting pin 325 with the rotational paths of adjacent blades 324 overlapping by an amount to avoid skip cutting.

The connecting pin 325 is fixed to the cutter shaft 321 by a fixing seat 327, and stopper pieces 326 fixed to the fixing seat 327 and preventing the connecting pin 325 from rotating are provided at both ends of the connecting pin 325. The main purpose is to prevent the blade 324 from generating large offset in the using process, so as to control the distance between the adjacent blades 324, avoid accidental knife hitting in the operation process, damage the blade and influence the normal operation of the machine.

The blade 324 is made of special wear-resistant steel materials and has good wear resistance while ensuring flexibility through heat treatment.

The blade 324 is streamlined in shape with the mounting axis parallel to the blade facet.

As shown in fig. 6, the supporting roller assembly 33 includes a roller 331, a bearing III 332, and a bearing IV 333.

Both ends of the drum 331 are rotatably connected to the housing 31 through a bearing III 332 and a bearing IV 333, respectively, so that the drum 331 can freely roll.

The height adjusting device is correspondingly arranged at two ends of the roller 331 and comprises an elevation adjusting plate I334 and an elevation adjusting plate II335 which are identical in structure, taking the structure of the elevation adjusting plate I334 shown in FIG. 7 as an example, roller connecting holes 3341 on the elevation adjusting plate I334 and the elevation adjusting plate II335 are correspondingly connected with the end part of the roller 331, and connecting hole groups 3342 connected with the corresponding side adjusting hole groups on the housing 31 are arranged on the elevation adjusting plate I334 and the elevation adjusting plate II 335.

Three groups of adjusting hole groups are arranged on one side of the housing 31 from top to bottom, namely a lower adjusting hole group 316, a middle adjusting hole group 317 and an upper adjusting hole group 318, and the connecting hole group 3342 is correspondingly connected with the corresponding adjusting hole group to adjust the cutting distance of the cutter shaft 321.

The cutting distance D (indicated by D region in fig. 9) of the cutter shaft is the highest when the connecting hole groups 3342 of the two height-adjustable plates are connected with the lower adjusting hole group 316 of the corresponding side of the housing 31, and the cutting distance D of the cutter shaft is the lowest when the connecting hole groups 3342 of the two height-adjustable plates are connected with the upper adjusting hole group 318 of the corresponding side of the housing 31.

As shown in fig. 6, the transmission mechanism 34 includes a motor 341, a coupling 342, and a shield 347.

The motor 341 is connected with the cutter shaft 321 through the coupler 342, the shield 343 is connected with the housing 31, and the shield 343 is mainly used for protecting the motor 341 and avoiding unnecessary collision of the motor 341 to shorten the service life of the equipment; when the motor 341 is started to rotate, the shaft coupler 342 drives the cutter shaft 321 to perform high-speed rotation cutting.

During cutting, shorter weeds positioned at the front part of the grass cutting head machine enter the cavity C after passing through the flexible front baffle 311, the cutter shaft 321 rotates at a high speed under the transmission action of the transmission mechanism 34, the cutter blade 324 connected with the cutter shaft is driven to rotate and cut in the process of continuing advancing, the diameter of a cut plant can reach 20 mm to the maximum, and cut weed fragments cannot splash out under the action of the rear baffle 312 to generate unnecessary safety problems or increase subsequent cleaning difficulty.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. However, the above description is only an example of the present invention, the technical features of the present invention are not limited thereto, and any other embodiments that can be obtained by those skilled in the art without departing from the technical solution of the present invention should be covered by the claims of the present invention.