阅读说明：本技术 一种绿化综合养护车用割草头 (Grass cutting head for greening comprehensive maintenance vehicle ) 是由 顾清亚 岳慧斌 施俊 邓晓飞 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,割草头安装在工作臂的末端,割草头包括罩壳、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。该割草头的整体机构设置简单且合理,利用该机具进行打草修剪工作,高度调节方便、作业效率高且安全性得到有效保障。(The invention discloses a grass cutting head 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 whole mechanism of this grass cutting head sets up simply and rationally, utilizes this machines to beat the grass pruning work, and the altitude mixture control is convenient, the operating efficiency is high and the security obtains effectively guaranteeing.)

1. A grass cutting head for a greening comprehensive maintenance vehicle is characterized in that the grass cutting head (3) is installed at the tail end of a working arm (2), and the grass cutting head (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 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 blades (324) can rotate around the connecting pins (325), and the rotating tracks of the adjacent blades (324) have overlapping amount.

2. A grass cutting head for a comprehensive greening maintenance vehicle as claimed in claim 1, wherein the housing (31) is provided with a front curtain (311), a rear curtain (312), a hook (313) and a mounting pin (314); the front curtain (311) is arranged at the front part of the housing (31), the rear curtain (312) is arranged at the rear part of the housing (31), and the hook (313) is arranged on the top surface of the housing (31); the mounting pin (314) is arranged at the top of the rear side of the housing (31).

3. A grass-cutting head for a green combined maintenance vehicle as claimed in claim 2, characterized in that the front curtain (311) is flexible.

4. A grass-cutting head for a green combined maintenance vehicle as claimed in claim 1, characterized in that adjusting spacers (326) are provided on both sides of the blade (324) and between the blade (324) and the mounting seat (327) for the fixed connection pin (325).

5. A grass-cutting head for a comprehensive maintenance vehicle for afforestation according to claim 1, wherein the blade (324) is made of wear-resistant steel material and is heat-treated.

6. A grass-cutting head for a green combined maintenance vehicle as claimed in claim 1, characterized in that the blade (324) is in the shape of a twist, and the mounting axis of the blade (324) on the connecting pin (325) is parallel to the blade face of the blade (324).

7. A grass-cutting head for a comprehensive greening maintenance vehicle as claimed in claim 1, wherein the supporting roller assembly (33) comprises a roller (331), a bearing III (332) and a bearing IV (333), and two ends of the roller (331) are rotatably connected to the housing (31) through the bearing III (332) and the bearing IV (333), respectively.

8. A grass-cutting head for a comprehensive greening maintenance vehicle as claimed in claim 1, wherein the transmission mechanism (34) comprises a motor (341), a coupling I (342), a coupling II (343), a pulley I (344), a pulley II (345), a V-belt (346) and a shield (347); the motor (341) is connected with the belt wheel I (344) through a coupling I (342); the belt wheel I (344) is connected with the belt wheel II (345) through a V-shaped belt (346); the belt wheel II (345) is connected with the cutter shaft (321) through a coupling II (343), and the shield (347) 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 for a greening comprehensive 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 is one of multifunctional machines equipped on the greening comprehensive maintenance vehicle, is arranged at the tail end of a working arm, and works at the position of a roadside 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 a 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, provides the grass cutting head for the comprehensive greening maintenance vehicle, is large in cutting diameter, is particularly suitable for trimming areas with luxuriant grass leaves and higher vegetation, can adaptively adjust the trimming height, has better wear resistance, greatly reduces the risk of cutter breakage, and obviously improves the use safety.

The main technical scheme of the invention is as follows: a grass cutting head 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 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 a connecting pin fixedly connected with the cutter shaft, the blades can rotate around the connecting pin, and the rotating tracks of the adjacent blades have overlapping amount.

Furthermore, a front curtain, a rear curtain, a lifting hook and a mounting pin are arranged on the housing; the front curtain is arranged at the front part of the housing, the rear curtain is arranged at the rear part of the housing, and the lifting hook is arranged on the top surface of the housing; the mounting pin is arranged at the top of the rear side of the housing.

Further, the front curtain has flexibility.

Furthermore, adjusting cushion blocks are arranged on two sides of the blade and between the blade and the mounting seat for fixing the connecting pin.

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

Further, the shape of the blade is twist-shaped, and the installation axis of the blade on the connecting pin is parallel to the edge surface of the blade.

Further, the supporting roller assembly comprises a roller, a bearing III and a bearing IV, wherein two ends of the roller are respectively rotatably connected to the housing through the bearing III and the bearing IV.

Further, the transmission mechanism comprises a motor, a coupling I, a coupling II, a belt wheel I, a belt wheel II, a V-shaped belt and a protective cover; the motor is connected with the belt wheel I through a coupling I; the belt wheel I is connected with the belt wheel II through a V-shaped belt; the belt wheel II is connected with the cutter shaft through a coupling II, and the shield is connected with the housing.

The invention has the beneficial effects that:

1. the invention discloses a grass cutting head for a greening comprehensive maintenance vehicle, the whole mechanism is simple and reasonable in arrangement, when the machine is used for trimming greening vegetation, weeds, shrubs and the like on two sides of a road and in a side slope, the maximum diameter of the cut plants can reach 20 mm, and the front part of the grass cutting head is higher, so that the machine is particularly suitable for trimming in an area with luxuriant grass leaves and higher vegetation, the operation 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 the connecting pin with rotatory arbor and is equipped with the adjustment cushion in the side, has good dodging nature in specific range when guaranteeing good cutting performance, very big reduction the risk of disconnected sword, operating personnel operates the grass cutting head 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 an enlarged view of portion D of FIG. 1;

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

FIG. 4 is a schematic left view of a grass cutting head for a greening maintenance vehicle;

FIG. 5 is a schematic right view of a grass cutting head 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 a front view of the blade and connecting pin in a connected state;

FIG. 8 is a left side view of the blade and connecting pin in a connected condition;

FIG. 9 is an axial side view of the arbor;

FIG. 10 is a schematic structural view of an elevation plate I;

FIG. 11 is a schematic view of the inner structure of a grass cutting head for a greening maintenance vehicle;

FIG. 12 is a view showing the working state of a grass cutting head for a greening maintenance vehicle;

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

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-hook, 314-mounting pin;

321-cutter shaft, 322-bearing I, 323-bearing II, 324-blade, 325-connecting pin, 326-adjusting cushion block and 327-mounting 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 connecting hole, 3342-housing connecting hole, 3343-adjusting hole;

341 motor, 342 coupling I, 343 coupling II, 344 pulley I, 345 pulley II, 346V-belt, 347 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 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 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 due to the improvement of the structure of the grass cutting head, but the function realization of the grass cutting head is not limited.

As shown in fig. 1, the grass cutting head 3 is one of the multifunctional implements equipped on the integrated greening maintenance vehicle, is mounted at the end of the working arm 2, and is mainly used for operating the grass cutting head 3 at the roadside or the side slope position through the actions of extension, slippage, 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. 3, the grass-cutting head 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 for operation.

As shown in fig. 3-5, the housing 31 is provided with a front curtain 311, a rear curtain 312, a hook 313 and a mounting pin 314;

the front curtain 311 is installed at the front part of the housing 31, the front curtain 311 has certain flexibility, so that during operation, plants in front can smoothly enter the cavity between the front curtain 311 and the cutter shaft assembly 32 through the front curtain 311, as shown in a part C in fig. 11, the plants cannot be directly pressed down or broken to influence normal cutting operation, a rotating blade can more easily cut the plants entering the cavity C, and the width of the cavity C is such that the swinging range (the area with the sector-shaped section indicated by a in fig. 11) of the front curtain 311 and the rotating range (the area with the circular section indicated by B in fig. 11) of the blade do not overlap and have a certain distance, so that the front curtain 311 is prevented from being damaged during the rotation of the blade, and meanwhile, the rotating materials are prevented from flying out from the front part; the rear curtain 312 is installed at the rear of the housing 31 to prevent the cut and rotated material from flying out from the rear; the hook 313 is arranged on the top surface of the housing 31 to facilitate hoisting; a mounting pin 314 is provided at the top of the rear side of the housing 31 for a quick-change fixed connection with the working arm 2.

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; 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 keep 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.

As shown in fig. 2 and 7-8, spacer blocks 326 are provided on both sides of the blade 324 between the blade 324 and a mounting seat 327 for securing a connecting pin 325. The main purpose is to prevent the blade 324 from generating a large offset in the using process, so as to control the distance between adjacent blades 324 and avoid accidental cutting in the operation process.

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 in a twist shape, and the mounting axis is parallel to the blade edge surface; the twist-shaped blade is characterized in that after the blade is lengthened, the wind resistance generated by high-speed rotation can be reduced, larger rotational inertia and centrifugal cutting force are generated, better cutting effect can be ensured while energy is saved, and the twist-shaped blade is more suitable for cutting dense grasses and shrubs.

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.

Height adjusting devices are correspondingly arranged at two ends of the roller 331, the height adjusting devices comprise height adjusting plates I334 and height adjusting plates II335 with the same structure, taking the structure of the height-adjusting plate I334 shown in fig. 10 as an example, the roller connecting holes 3341 on the height-adjusting plate I334 and the height-adjusting plate II335 are correspondingly connected with the end of the roller 331, the height-adjusting plate I334 and the height-adjusting plate II335 are provided with a housing connecting hole 3342 and a set of adjusting holes 3343, the housing connecting hole 3342 is fixedly connected with the housing 31, when the distance between the rotating cutter shaft 321 and the ground is required to be adjusted (the area indicated by H in figure 11), the housing connecting hole 3342 is firstly loosely matched with the housing 31, the height-adjusting plate I334 and the height-adjusting plate II335 rotate around the housing connecting hole 3342, corresponding hole groups in the adjusting holes 3343 are fixed with the housing 31, and finally the housing connecting hole 3342 is fastened and connected with the housing 31. If the uppermost hole group of the adjusting hole 3343 is assembled, the cutting width is the highest when the distance between the axis of the roller 331 and the axis of the cutter shaft 321 is the largest, and if the lowermost hole group of the adjusting hole 3343 is assembled, the distance between the axis of the roller 331 and the axis of the cutter shaft 321 is the smallest when the distance between the axis of the roller 331 and the axis of the cutter shaft 321 is the smallest, the cutting width is the lowest.

As shown in fig. 3-5, the transmission 34 includes a motor 341, a coupling I342, a coupling II 343, a pulley I344, a pulley II345, a V-belt 346, and a shroud 347.

The motor 341 is connected with a belt wheel I344 through a coupling I342; the pulley I344 is connected with the pulley II345 through a V-belt 346; the belt wheel II345 is connected with the cutter shaft 321 through a coupling II 343, the shield 347 is connected with the housing 31, and the shield 347 protects the transmission elements so as to ensure the safety of personnel and equipment; when the motor 341 is started to rotate, the shaft coupling I642 drives the pulley I344 to rotate, the V-belt 346 drives the pulley II345 to rotate, and finally the shaft coupling II 343 drives the knife shaft 321 to perform high-speed rotary cutting.

During cutting, weeds positioned at the front part of the grass cutting head 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 blades 324 connected with the cutter shaft are driven to rotate and cut in the process of continuing advancing, the diameter of a cut plant can reach 20 mm at most, and cut weed fragments cannot splash out under the action of the rear baffle 312 to generate unnecessary safety problems or increase the 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.