CN215706760U

CN215706760U - Running gear of half-track tractor

Info

Publication number: CN215706760U
Application number: CN202121956062.1U
Authority: CN
Inventors: 王梦莹; 王志超; 王艳萍; 邢鹏飞; 赵传扬; 韩小坤; 徐清俊
Original assignee: First Tractor Co Ltd
Current assignee: First Tractor Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-01
Anticipated expiration: 2031-08-19

Abstract

The utility model provides a running gear of half track tractor, which comprises a vehicle rack, the setting is used for installing on frame upper portion and provides the drive wheel of power for running gear on the tractor rear axle, leading wheel and take-up pulley of setting in the frame lower part, the take-up pulley is by the elasticity of setting up the tensioning buffer drive on the frame in order to adjust the track, still establish at the drive wheel including the cover, the coreless rubber track on leading wheel and the take-up pulley, be equipped with along the drive wheel outer circumference on the drive wheel with set up the inboard internal tooth of track mesh with drive track pivoted external tooth, the leading wheel, the rim clearance of take-up pulley forms the passageway that the track internal tooth passes through respectively. The utility model can improve the travelling speed of the travelling device, is convenient to install and disassemble in practical use, has high reliability, and can increase the buffering capacity of the travelling device while preventing the travelling device from overturning by additionally arranging the limiting device.

Description

Running gear of half-track tractor

Technical Field

The utility model relates to the technical field of tractors, in particular to a walking device of a semi-crawler tractor.

Background

When a wheeled tractor is operated in a rice planting area in China, the tractor frequently slips, falls into wheels and the like, so that the power of the tractor is difficult to be effectively utilized, and the soil structure is seriously damaged. In areas with large ground slopes in mountainous regions, the climbing capability of the wheeled tractor is limited, and the stability and the traction power of the wheeled tractor are influenced by self walking or agricultural tool hitching operation. As a result, semi-track tractors are increasingly being used with the advantage of high traction power and dynamic traction ratio.

The existing half-track type tractor walking device has the problems of low speed, poor reliability and difficult installation and disassembly due to unreasonable track type selection or structural arrangement, thereby influencing the working efficiency of the track type tractor and the traction power of the tractor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a walking device of a half-track tractor, which aims to solve the problems of low walking speed, poor reliability and difficult assembly and disassembly of the existing walking device of the half-track tractor.

The technical scheme adopted by the utility model to achieve the aim is as follows:

the utility model provides a running gear of half track tractor, includes the frame, sets up and is used for installing on frame upper portion and provides the drive wheel of power, sets up leading wheel and take-up pulley in the frame lower part for running gear on the tractor rear axle, the take-up pulley is by setting up the elasticity of tensioning buffer drive in order to adjust the track on the frame, still including the centreless iron rubber track of cover establishing on drive wheel, leading wheel and take-up pulley, be equipped with along the drive wheel outer circumference on the drive wheel with set up the inboard internal tooth of track mesh with drive track pivoted external tooth, the rim clearance of leading wheel, take-up pulley forms the passageway that the track internal tooth passes through respectively.

Furthermore, the walking device also comprises a limiting device which is fixed between the frame and a mounting seat of the rear axle of the tractor and can swing along the moving direction of the walking device.

Furthermore, stop device includes the last link with the mount pad fixed connection of tractor rear axle and with frame fixed connection's lower link, go up the link and articulate through the round pin axle that is on a parallel with the tractor rear axle setting with lower link.

Furthermore, a plurality of supporting wheels arranged on the frame are arranged between the guide wheel and the tension wheel.

Furthermore, a first mudguard is arranged on the frame and positioned between the thrust wheels for preventing soil accumulation or stone splashing.

And furthermore, second mud baffles are arranged on the frame behind the guide wheel and behind the tension wheel.

Further, the driving wheel is a double-semicircle connection type driving wheel.

Further, the external teeth are wheel pins uniformly distributed along the outer circumference of the driving wheel.

Further, the tensioning buffer device is a hydraulic cylinder.

Further, the driving wheel, the guide wheel and the tension wheel enable the cross section of the crawler belt to be triangular.

The utility model has the beneficial effects that:

1. the walking device for the semi-crawler tractor adopts the coreless rubber crawler belt to transmit power, drives the crawler belt through the pitch teeth, improves the advancing speed of the walking device, and has convenient installation and disassembly and high reliability.

2. The limiting device can swing to a certain extent along the advancing direction of the walking device, can prevent the walking device from overturning, increases the buffering capacity of the walking device, and further improves the stability and reliability of the walking device.

Drawings

FIG. 1 is a front view of a semi-caterpillar tractor running gear;

FIG. 2 is a schematic perspective view of a walking device of a semi-crawler tractor according to the present invention;

fig. 3 is a schematic view of the mounting structure of the walking device of the semi-crawler tractor on the tractor.

The labels in the figure are: 1. driving wheel, 101, external tooth, 2, thrust wheel, 3, leading wheel, 4, take-up pulley, 5, tensioning buffer, 6, frame, 7, stop device, 701, upper link, 702, lower link, 703, round pin axle, 801, first fender, 802, second fender, 9, track, 901, internal tooth, 10, tractor rear axle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and detailed description, wherein in the description of the utility model it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Embodiment 1 of a running gear of a semi-crawler tractor according to the present invention

As shown in fig. 1 to 3, the traveling device of the semi-track tractor of the present embodiment includes a frame 6, a driving wheel 1, a guide wheel 3, a tension wheel 4 and a track 9, the frame 6 can be formed by a steel welding member, the driving wheel 1 is disposed on the upper portion of the frame 6, the driving wheel 1 is configured to be detachably mounted on a tractor rear axle 10 to rotate under the driving of the tractor rear axle 10, the driving wheel 1 can be a driving wheel with a double-semicircle connection type to further facilitate the mounting and dismounting of the entire traveling device, the guide wheel 3 and the tension wheel 4 are disposed on the lower portion of the frame 6 respectively on two sides of the driving wheel 1, which means that the projection of the driving wheel 1 on the line connecting the guide wheel 3 and the tension wheel 4 is located between the guide wheel 3 and the tension wheel 4, the track 9 is formed by a coreless iron rubber track, which is sleeved on the outer sides of the driving wheel 1, the guide wheel 3 and the tension wheel 4, wherein the tension wheel 4 is driven by a tension buffer 5 disposed on the frame 6 to adjust the tightness of the track 9, the tensioning buffer device 5 is a device with a linear driving function, for example, the linear driving function can be realized by a hydraulic cylinder or an electric push rod or other linear driving devices, a wheel shaft of the tensioning wheel 4 is fixedly connected with a movable end of the tensioning buffer device 5, the tensioning wheel 4 is driven by the tensioning buffer device 5 to move to adjust the tightness of the track in the triangular track walking mechanism, wherein the linear driving direction of the tensioning buffer device is the same as the resultant force direction of the track, so that the whole walking mechanism does not bear bending moment, thereby reducing impact force and improving reliability, in addition, the linear driving device can be provided with a buffer device, for example, a mechanical spring or an energy accumulator or the like is arranged to realize the buffer function in the linear driving, so as to relieve the impact received by the tensioning wheel and prevent stones and the like from being clamped into the track to cause overload of walking system parts, thereby ensuring that the track is tensioned moderately under different road surfaces and working conditions, Is safe and reliable.

In this embodiment, the driving wheel 1 is provided with the external teeth 101 along the outer circumference of the driving wheel 1, when the external teeth 101 are specifically manufactured, grooves are formed in the outer circumference of the driving wheel 1, wheel pins are embedded in the grooves, the wheel pins are uniformly distributed on the outer circumference of the driving wheel 1 to form the external teeth 101, the inner side of the crawler 9 is provided with the internal teeth 901, the crawler 9 is driven to rotate by meshing the wheel pins and the internal teeth 901, the crawler 9 adopts a coreless iron crawler, the traveling speed of the traveling device can be increased by a pitch driving mode, the traveling noise is reduced, the wheel rim gaps of the guide wheel 3 and the tension wheel 4 respectively form channels through which the internal teeth 901 pass, that is, the guide wheel 3 is two rotating guide wheels which are oppositely arranged on a wheel shaft, and the internal teeth 901 of the crawler 9 are clamped between the two guide wheels, so that the track 9 is prevented from deviating, and the traveling stability is improved.

The driving wheel 1, the guide wheel 3 and the tension wheel 4 of the embodiment enable the cross section of the crawler 9 to be triangular, so that a triangular crawler traveling mechanism is formed, and the stability and the reliability of the traveling device are improved.

A plurality of thrust wheels 2 have been arranged between leading wheel 3 and the take-up pulley 4 of this embodiment, the below at frame 6 is fixed alone to 2 accessible wheel axles of every thrust wheel, with the whole running gear of auxiliary stay, frame 6 is equipped with and is located the first fender 801 that is used for preventing earth from piling up or the stone splashes between the thrust wheel 2, all be equipped with second fender 802 in leading wheel 3 rear and be located take-up pulley 4 rear on the frame 6, the equal rear end of wheel on the in-process advancing direction of rear wherein, can effectively prevent earth from piling up or the stone splashes etc. at the tractor advancing in-process, and then promote half track running gear's performance.

Embodiment 2 of a running gear of a semi-crawler tractor according to the present invention

Unlike embodiment 1, the traveling device of the semi-crawler tractor of this embodiment further includes a limiting device 7 to further reduce the phenomena of wheel sinking, slipping, abrasion, etc. in complex environments such as mountainous areas, paddy fields, etc., the limiting device 7 of this embodiment is installed between the frame 6 and the mounting seat of the tractor rear shaft 10 and can swing along the moving direction of the traveling device, wherein the mounting seat of the tractor rear shaft 10 is usually a bearing for mounting the tractor rear shaft 10, specifically, the limiting device 7 includes an upper connecting frame 701 fixedly connected with the mounting seat of the tractor rear shaft 10, when the mounting seat of the tractor rear shaft 10 is a bearing, the upper connecting frame 701 can be fixed on the housing of the bearing by long screws, the limiting device 7 further includes a lower connecting frame 702 fixedly connected with the frame 6, the lower connecting frame 702 can be directly fixed on the frame 6 by screws, go up link 701 and lower link 702 and adopt articulated mode, realize that link 702 drives the swing of frame 6 down, it is articulated with the round pin axle 703 that lower link 702 accessible set up on a parallel with tractor rear axle 10 to go up link 701, can guarantee that link 702 swings along running direction of running gear when swinging down, fix on the tractor because of stop device, except can preventing running gear from taking place the upset, can also increase running gear's buffer capacity through the swing, further improved running gear's stability, reliability, when specifically implementing stop device, go up link 701 and lower link 702 junction, there is the spacing face of setting on lower link 702 still, so that the swing of lower link 702 is in the design requirement within range, further improve running gear's reliability.

It should be noted that the detailed description is not given for the prior art, and the above embodiments are only used for illustrating the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A walking device of a semi-crawler tractor comprises a frame (6), a driving wheel (1) which is arranged on the upper part of the frame (6) and is used for being arranged on a rear shaft (10) of the tractor to provide power for the walking device, a guide wheel (3) and a tension wheel (4) which are arranged on the lower part of the frame (6), the tensioning wheel (4) is driven by a tensioning buffer device (5) arranged on the frame (6) to adjust the tightness of the crawler belt (9), it is characterized by also comprising a coreless iron rubber crawler belt (9) sleeved on the driving wheel (1), the guide wheel (3) and the tension wheel (4), outer teeth (101) which are meshed with inner teeth (901) arranged on the inner side of the crawler (9) to drive the crawler (9) to rotate are arranged on the driving wheel (1) along the outer circumference of the driving wheel (1), and channels through which the inner teeth (901) of the crawler (9) pass are respectively formed in wheel rim gaps of the guide wheel (3) and the tensioning wheel (4).

2. The running gear of a half-track tractor according to claim 1, characterized by further comprising a limiting device (7) fixed between the frame (6) and the mounting seat of the rear axle (10) of the tractor and capable of swinging along the moving direction of the running gear.

3. The running gear of a half-track tractor according to claim 2, characterized in that the limiting device (7) comprises an upper connecting frame (701) fixedly connected with a mounting seat of a rear axle (10) of the tractor and a lower connecting frame (702) fixedly connected with the frame (6), and the upper connecting frame (701) is hinged with the lower connecting frame (702) through a pin shaft (703) arranged in parallel with the rear axle (10) of the tractor.

4. The running gear of a half-track tractor according to claim 1, characterized in that a plurality of thrust wheels (2) are provided on the frame (6) between the guide wheels (3) and the tension wheels (4).

5. The running gear of a half-track tractor according to claim 4, wherein the frame (6) is provided with a first fender (801) between the track wheels (2) for preventing soil accumulation or stone splash.

6. The running gear of a half-track tractor according to claim 5, characterized in that the frame (6) is provided with a second fender (802) behind the guide wheel (3) and behind the tension wheel (4).

7. The running gear of a half-track tractor according to claim 1, characterized in that the driving wheel (1) is a double semi-circular link type driving wheel.

8. The running gear of a semi-caterpillar tractor according to claim 1, wherein the external teeth (101) are wheel pins evenly distributed along the outer circumference of the driving wheel (1).

9. The running gear of a half-track tractor according to claim 1, characterized in that the tension buffering means (5) is a hydraulic cylinder.

10. The running gear of a half-track tractor according to claim 1, characterized in that the driving wheels (1), the guide wheels (3) and the tension wheels (4) make the cross section of the track (9) triangular.