Output end non-cantilever type crawler mechanism for grass chopper

Abstract

The utility model discloses an output end non-cantilever type crawler mechanism for a grass chopper, which is characterized in that a driving wheel of a crawler assembly is connected to a power output shaft through a non-cantilever supporting structure, and the non-cantilever supporting structure comprises an inner supporting plate and an outer supporting plate which are fixedly connected; the end of the power output shaft extends into the position between the inner supporting plate and the outer supporting plate, a driving shaft sleeve is fixedly installed on the periphery of the end, the outer end of the driving shaft sleeve is connected to the outer supporting plate through an outer bearing seat assembly, and the power output shaft is connected to the inner supporting plate through an inner bearing seat assembly. The driving wheel is fixedly installed outside the driving shaft sleeve and located between the inner supporting plate and the outer supporting plate. According to the device, the driving shaft sleeve is additionally arranged at the outer end of the power output shaft, the power output shaft and the driving shaft sleeve are rotationally supported through the inner supporting plate and the outer supporting plate respectively, at the moment, the power output shaft is not of a cantilever structure any more, and the two ends of the power output shaft are matched through the inner supporting plate and the outer supporting plate to form a non-cantilever type stable supporting structure.

Description

Technical Field

[0001] The utility model relates to a straw crusher, in particular to a non-cantilever crawler mechanism at the output end of a straw crusher. Background Art

[0002] With the development of society and the improvement of the degree of mechanization, various agricultural machines have begun to be widely used in agricultural operations. A straw crusher is a robot used for cutting various grasses and stem plants such as millet straw, rice straw, wild grass, wheat straw, and corn straw. The straw crusher includes a chassis, a power mechanism arranged above the chassis, a straw crushing mechanism arranged in front of the chassis, and crawler mechanisms arranged on both sides of the chassis. The cutting knives in the straw crushing mechanism are used for cutting and shredding grasses and stem plants. The crawler mechanisms, as walking components, are used to realize operation walking in the straw crushing state and transfer movement in the non-straw crushing state. Currently, the driving wheels of the crawler mechanisms are installed at the cantilever end of the walking output shaft. Refer to Figure 3 , when the walking output shaft rotates, it drives the driving wheels to rotate to achieve the purpose of the crawler mechanism walking. However, this cantilever installation method has an unstable structure and affects the service life of the output shaft. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a non-cantilever crawler mechanism at the output end of a straw crusher with a non-cantilever installation.

[0004] To solve the above technical problem, the technical solution of the utility model is: a non-cantilever crawler mechanism at the output end of a straw crusher, including a crawler assembly connected to a power output shaft. The driving wheels of the crawler assembly are connected to the power output shaft through a non-cantilever support structure. The non-cantilever support structure includes an inner support plate and an outer support plate fixedly connected. The end of the power output shaft extends between the inner support plate and the outer support plate, and a driving shaft sleeve is fixedly installed on the outer periphery of the end. The outer end of the driving shaft sleeve is connected to the outer support plate through an outer bearing seat assembly. The power output shaft is connected to the inner support plate through an inner bearing seat assembly. The driving wheels are fixedly installed outside the driving shaft sleeve and are located between the inner support plate and the outer support plate.

[0005] As a preferred technical solution, the outer bearing assembly includes an outer bearing fixedly installed on the outer periphery of the driving shaft sleeve, and the outer ring of the outer bearing is installed on the outer support plate through an outer bearing seat; the inner bearing assembly includes an inner bearing fixedly installed on the outer periphery of the power output shaft, and the outer ring of the inner bearing is installed on the inner support plate through an inner bearing seat.

[0006] As a preferred technical solution, an installation hole is provided on the inner circumference of the drive shaft sleeve, the end of the power output shaft is sleeved in the installation hole, a circumferential positioning structure is provided between the outer circumference of the power output shaft and the inner circumference of the installation hole, and an axial positioning structure is further provided between the end of the power output shaft and the drive shaft sleeve.

[0007] As a preferred technical solution, the circumferential positioning structure includes a keyway one provided on the inner circumferential surface of the installation hole and a keyway two provided on the outer circumferential surface of the power output shaft, and the keyway one and the keyway two are connected by a key.

[0008] As a preferred technical solution, the axial positioning structure includes a positioning shaft shoulder provided on the inner circumference of the drive shaft sleeve and outside the installation hole, a positioning retaining plate is provided at the end of the power output shaft, the positioning retaining plate is fixed to the center of the power output shaft by bolts, and the positioning retaining plate abuts against the end of the power output shaft and the positioning shaft shoulder.

[0009] As a preferred technical solution, a drive wheel mounting plate is fixed to the outer circumference of the middle part of the drive shaft sleeve, and the drive wheel is fixedly connected to the drive wheel mounting plate.

[0010] As a preferred technical solution, the inner support plate and the outer support plate are fixedly connected by stud bolts and bolts.

[0011] As a preferred technical solution, the crawler assembly further includes a plurality of driven wheels installed between the inner support plate and the outer support plate, and a traveling crawler is installed outside the drive wheel and the plurality of driven wheels.

[0012] Due to the adoption of the above technical solution, the beneficial effect of the present utility model is that: by adding a drive shaft sleeve at the outer end of the power output shaft and using the inner support plate and the outer support plate to respectively rotate and support the power output shaft and the drive shaft sleeve, the power output shaft is no longer a cantilever structure at this time, and its two ends are cooperated by the inner support plate and the outer support plate to form a non-cantilever type stable support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following drawings are only intended to illustrate and explain the present utility model schematically and do not limit the scope of the present utility model.

[0014] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the non-cantilever support structure of an embodiment of the present utility model;

[0016] Figure 3 is the cantilever installation method in the background art;

[0017] In the figure: 100 - chassis; 200 - crawler assembly; 201 - drive wheel; 202 - idler wheel; 300 - traveling motor; 400 - speed reducer; 500 - non - cantilever support structure; 501 - inner support plate; 502 - outer support plate; 503 - drive shaft sleeve; 504 - outer bearing; 505 - outer bearing housing; 506 - inner bearing; 507 - inner bearing housing; 508 - key; 509 - positioning washer; 510 - bolt; 511 - drive wheel mounting plate; 600 - power output shaft. Detailed implementation manners

[0018] The following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the drawings and description are illustrative in nature and not used to limit the protection scope of the claims.

[0019] As Figure 1 shown, crawler assemblies 200 are respectively provided on the left and right sides of the straw crusher. Each crawler assembly 200 is driven by a traveling motor 300 and a speed reducer 400. The traveling motor 300 is fixed on the chassis 100. The drive wheel 201 at the rear of the crawler assembly 200 is connected to the power output shaft 600 of the traveling motor 300 through a non - cantilever support structure 500. The driven shaft on a certain idler wheel 202 at the front of the crawler assembly 200 is rotatably connected to the chassis 100.

[0020] As Figure 1 and Figure 2As shown in the figure, an output end non-cantilever track mechanism for a straw crusher includes a track assembly 200 and a non-cantilever support structure 500. The non-cantilever support structure 500 includes an inner support plate 501 and an outer support plate 502 which are fixedly connected. The end of the power output shaft 600 extends between the inner support plate 501 and the outer support plate 502, and a driving shaft sleeve 503 is fixedly installed on the outer periphery of the end. The outer end of the driving shaft sleeve 503 is connected to the outer support plate 502 through an outer bearing seat assembly, and the power output shaft 600 is connected to the inner support plate 501 through an inner bearing seat assembly. The driving wheel 201 is fixedly installed outside the driving shaft sleeve 503 and is located between the inner support plate 501 and the outer support plate 502. By adding a driving shaft sleeve 503 at the outer end of the power output shaft 600 and using the inner support plate 501 and the outer support plate 502 to rotatably support the power output shaft 600 and the driving shaft sleeve 503 respectively, the power output shaft 600 is no longer a cantilever structure at this time. Its two ends are cooperatively formed by the inner support plate 501 and the outer support plate 502 into a non-cantilever stable support structure. The driving wheel 201 is fixedly installed at the middle position between the inner support plate 501 and the outer support plate 502 outside the driving shaft sleeve 503. When power is transmitted, the power output shaft 600 drives the driving shaft sleeve 503 and the driving wheel 201 thereon to rotate together, so as to realize the walking of the track assembly 200.

[0021] The outer bearing assembly includes an outer bearing 504 fixedly installed on the outer periphery of the driving shaft sleeve 503, and the outer ring of the outer bearing 504 is installed on the outer support plate 502 through an outer bearing seat 505; the inner bearing assembly includes an inner bearing 506 fixedly installed on the outer periphery of the power output shaft 600, and the outer ring of the inner bearing 506 is installed on the inner support plate 501 through an inner bearing seat 507.

[0022] An installation hole is provided on the inner periphery of the driving shaft sleeve 503, and the end of the power output shaft 600 is sleeved in the installation hole. A circumferential positioning structure is provided between the outer periphery of the power output shaft 600 and the inner periphery of the installation hole, and an axial positioning structure is also provided between the end of the power output shaft 600 and the driving shaft sleeve 503.

[0023] The circumferential positioning structure includes a keyway one provided on the inner peripheral surface of the installation hole and a keyway two provided on the outer peripheral surface of the power output shaft 600. The keyway one and the keyway two are connected by a key 508 to ensure that there is no circumferential rotation between the power output shaft 600 and the installation hole.

[0024] The axial positioning structure includes a positioning shoulder provided on the inner circumference of the drive shaft sleeve 503 and outside the mounting hole. A positioning washer 509 is provided at the end of the power output shaft 600. The positioning washer 509 is fixed to the center of the power output shaft 600 by bolts 510. The positioning washer 509 abuts against the end of the power output shaft and the positioning shoulder. Through the cooperation of the positioning washer 509, bolts 510 and the positioning shoulder, the power output shaft 600 and the drive shaft sleeve 503 are axially fixed to each other.

[0025] A drive wheel mounting plate 511 is welded and fixed to the outer circumference of the middle part of the drive shaft sleeve 503. The drive wheel 201 is fixedly connected to the drive wheel mounting plate 511 by bolts. After installation, the drive wheel 201 is located at the middle position between the inner support plate 501 and the outer support plate 502.

[0026] The inner support plate 501 and the outer support plate 502 are fixedly connected by stud bolts and bolts. Here, the inner support plate 501 and the outer support plate 502 also serve as the mounting base of the crawler assembly 200 and can be part of the crawler assembly 200.

[0027] The crawler assembly 200 further includes a plurality of driven wheels 202 installed between the inner support plate 501 and the outer support plate 502. A crawler is installed outside the drive wheel 201 and the plurality of driven wheels 202.

[0028] This device improves the structure on the basis of the existing traditional cantilever structure. By adding a drive shaft sleeve 503 and combining internal and external rotary supports, it solves the problem of structural instability easily caused by the traditional cantilever structure. It makes improvements on the original structure and has the advantages of simple structure, convenient installation and stable structure.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-cantilevered crawler mechanism for a lawn mower, comprising a crawler assembly connected to a power output shaft, characterized in that: The driving wheel of the track assembly is connected to the power output shaft through a non-cantilever support structure, and the non-cantilever support structure includes an inner support plate and an outer support plate that are fixedly connected. The end of the power output shaft extends between the inner support plate and the outer support plate, and a driving shaft sleeve is fixedly installed on the outer periphery of the end. The outer end of the driving shaft sleeve is connected to the outer support plate through an outer bearing seat assembly, and the power output shaft is connected to the inner support plate through an inner bearing seat assembly. The driving wheel is fixedly installed outside the driving shaft sleeve and is located between the inner support plate and the outer support plate.

2. The non-cantilevered crawler mechanism at the output end for a grass shredder as claimed in claim 1, characterized in that: The outer bearing assembly includes an outer bearing fixedly mounted on the outer periphery of the drive shaft sleeve, and the outer ring of the outer bearing is mounted on the outer support plate through an outer bearing seat; the inner bearing assembly includes an inner bearing fixedly mounted on the outer periphery of the power output shaft, and the outer ring of the inner bearing is mounted on the inner support plate through an inner bearing seat.

3. The non-cantilevered crawler mechanism at the output end for a grass shredder as claimed in claim 1, characterized in that: A mounting hole is provided on the inner circumference of the drive shaft sleeve, and the end of the power output shaft is inserted into the mounting hole. A circumferential positioning structure is provided between the outer circumference of the power output shaft and the inner circumference of the mounting hole, and an axial positioning structure is also provided between the end of the power output shaft and the drive shaft sleeve.

4. A non-cantilevered crawler mechanism at the output end for a grass shredder as claimed in claim 3, characterized in that: The circumferential positioning structure includes a keyway 1 arranged on the inner circumferential surface of the mounting hole and a keyway 2 arranged on the outer circumferential surface of the power output shaft, and the keyway 1 and the keyway 2 are connected by a key.

5. The non-cantilevered crawler mechanism at the output end for a grass shredder as claimed in claim 3, characterized in that: The axial positioning structure includes a positioning shoulder arranged on the inner periphery of the drive sleeve and located outside the mounting hole. A positioning baffle is provided at the end of the power output shaft. The positioning baffle is fixed to the center of the power output shaft by bolts. The positioning baffle rests on the end of the power output shaft and the positioning shoulder.

6. The non-cantilevered crawler mechanism at the output end for a grass shredder as claimed in claim 1, characterized in that: A driving wheel mounting plate is fixed to the outer periphery of the middle portion of the driving shaft sleeve, and the driving wheel is fixedly connected to the driving wheel mounting plate.

7. The non-cantilevered crawler mechanism at the output end for a grass shredder as claimed in claim 1, characterized in that: The inner support plate and the outer support plate are fixedly connected by studs and bolts.

8. The non-cantilevered crawler mechanism at the output end for a grass shredder as claimed in claim 1, characterized in that: The track assembly also includes a plurality of driven wheels installed between the inner support plate and the outer support plate, and walking tracks are installed outside the driving wheel and the plurality of driven wheels.

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