An online testing and calibration device for tractor end-drive components

Abstract

This utility model relates to the field of automated testing, specifically to an online testing and calibration device for tractor end-drive components. It includes a flat chain conveyor with a built-in conveyor chain and several shaft carriers. The flat chain conveyor has a calibration mechanism, and its end has a shaft length detection mechanism. The shaft length detection mechanism includes a pusher head, a laser rangefinder, and a reflector. When the drive shaft contacts the reflector, the continuously moving pusher head drives the sliding shaft to compress a spring. Simultaneously, the sliding shaft triggers a pressure sensor. The operator can precisely stop the pusher head's movement based on the pressure change signal, ensuring the drive shaft is tightly and evenly clamped between the pusher head and the reflector. Finally, combined with the optical measurement of the laser rangefinder and the reflector, the distance between the pusher head and the reflector accurately corresponds to the actual shaft length of the drive shaft, completely avoiding minor displacement errors caused by unstable clamping and significantly improving the accuracy and reliability of shaft length measurement.

Description

Technical Field

[0001] This utility model relates to the field of automated testing, specifically to an online testing and calibration device for the production of tractor end-drive components. Background Technology

[0002] As a critical transmission component, the tractor end driveshaft's length accuracy directly affects the assembly precision and operational stability of the transmission system. Therefore, shaft length inspection during production is a core aspect of quality control. Existing technologies for the production, inspection, and calibration of tractor end driveshafts have several shortcomings: Firstly, the existing testing equipment lacks an effective automatic centering correction mechanism. After the drive shaft is placed on the conveyor, the two ends are prone to offset or the placement is skewed, which leads to inconsistent reference positions during subsequent shaft length testing, directly affecting the accuracy of the test results and making it impossible to reliably determine whether the shaft length meets the standard. Secondly, most existing testing carriers are of fixed size and can only be used for drive shafts of a single diameter. When producing drive shafts of different specifications, the carriers need to be changed frequently, which not only increases the number of operation steps but also reduces production efficiency and cannot meet the continuous production needs of products of multiple specifications. Thirdly, in traditional testing methods, the clamping and positioning of the two ends of the drive shaft often rely on manual operation or simple mechanical structures, which makes it difficult to ensure that the drive shaft is clamped evenly. Insufficient clamping force or uneven force often leads to slight displacement of the drive shaft during the testing process, which in turn causes measurement errors and affects the testing accuracy. Utility Model Content

[0003] The purpose of this invention is to provide an online testing and calibration device for the production of tractor end-drive components.

[0004] To achieve this objective, the present invention adopts the following technical solution: An online inspection and calibration device for tractor end-drive components includes a horizontally arranged flat chain conveyor with a built-in conveyor chain. The conveyor chain has several axle carriers evenly distributed around it, each axle carrier for horizontal placement of a drive shaft. The flat chain conveyor has a calibration mechanism that self-centers and calibrates the drive shaft during transport. The end of the flat chain conveyor has an axle length detection mechanism, which includes a pusher head, a laser rangefinder, and a reflector. The pusher head is used to contact one end of the drive shaft and drive its axial displacement. The laser rangefinder is connected to the pusher head. The reflector restricts the axial displacement of the drive shaft by contacting its end and provides a target point for the laser rangefinder to reflect.

[0005] To demonstrate the specific structure of the shaft carrier, each shaft carrier includes a V-shaped strip and a mounting plate. The V-shaped strip is horizontally arranged and has a V-shaped cross-section. The V-shaped strip is located above the mounting plate and is fixedly connected to the conveyor chain via the mounting plate.

[0006] To demonstrate the specific structure of the correction mechanism, the correction mechanism includes two symmetrical limiting baffles. The two limiting baffles are respectively fixed to the outer walls on both sides of the flat chain conveyor. Each limiting baffle is vertical, and one end of each limiting baffle extends outward to form an outward expansion portion. Each outward expansion portion is close to the beginning of the flat chain conveyor. The reflector is fixed to one of the limiting baffles.

[0007] To demonstrate the specific structure of the push shaft head, the push shaft head includes a push plate and a push cylinder. The push cylinder is horizontally arranged, and the push plate is vertically arranged. A sliding shaft coaxially inserted into the push cylinder is fixed on one side of the push plate. The laser rangefinder is fixedly connected to the push plate. A spring for driving the sliding shaft to extend outward is provided inside the push cylinder. A pressure sensor for detecting the pressure of the push plate through the sliding shaft is provided inside the push cylinder. One of the limiting baffles has an avoidance notch for the push plate to pass through.

[0008] To demonstrate how the spring is installed, the end of the push cylinder away from the limiting baffle is open, and an insert is fixed inside the push cylinder. The insert is coaxially inserted into the push cylinder through the open end of the push cylinder. A limiting ring is coaxially formed at one end of the insert. One end of the sliding shaft coaxially passes through the limiting ring and extends into the insert. The pressure sensor is fixed inside the insert. A retaining ring is coaxially formed on the outer wall of the sliding shaft and located inside the push cylinder. The spring is sleeved on the sliding shaft, and both ends of the spring abut against the retaining ring and the limiting ring, respectively.

[0009] To demonstrate how the pressure sensor is installed, the end of the insert opposite to the first limiting ring is open, and a columnar mounting base is fixed inside the insert. The columnar mounting base is coaxially inserted into the insert through the opening, and the pressure sensor is fixedly connected to the columnar mounting base.

[0010] In order to limit the sliding shaft and prevent it from sliding out of the push cylinder, a second limiting ring is coaxially formed at one end of the push cylinder near the limiting baffle. The sliding shaft coaxially passes through the second limiting ring and extends into the push cylinder. The retaining ring restricts the extension stroke of the sliding shaft by abutting against the second limiting ring.

[0011] To demonstrate how the pusher head drives the drive shaft, a mounting frame is provided below the pusher cylinder and is fixedly connected to the flat chain conveyor. A horizontal cylinder is fixedly mounted on the mounting frame, and the output end of the cylinder is fixedly connected to the pusher cylinder. A sliding rod is fixedly mounted above the pusher cylinder and is parallel to the pusher cylinder. A limiting sleeve is fixedly mounted on the mounting frame to allow the sliding rod to pass horizontally.

[0012] The beneficial effects of this utility model are: Firstly, if the two ends of the drive shaft are not aligned, during the transportation of the drive shaft, its longer end will be abutted by the outer expansion of the limiting baffle, gradually guiding the drive shaft to the center position. Finally, when all drive shafts reach the detection position, they are all in a state of alignment at both ends. This dynamic automatic correction method does not require manual intervention and directly unifies the reference position for subsequent shaft length detection, eliminating the detection error caused by misalignment from the source and significantly improving the accuracy of the detection results. Secondly, when the drive shaft contacts the reflector, the continuously moving pusher will drive the slide shaft to compress the spring. At the same time, the slide shaft triggers the pressure sensor. The operator can accurately stop the pusher's movement through the pressure change signal, ensuring that the drive shaft is tightly and evenly clamped between the pusher and the reflector. Finally, in conjunction with the optical measurement combination of the laser rangefinder and the reflector, the distance between the pusher and the reflector can accurately correspond to the actual shaft length of the drive shaft, completely avoiding the slight displacement error caused by unstable clamping, and greatly improving the accuracy and reliability of shaft length measurement. Thirdly, the shaft carrier of this utility model adopts a V-shaped strip structure. Its V-shaped cross-section design can automatically adapt to different diameter drive shafts through the inclined surfaces on both sides. This not only restricts the left and right movement of the drive shaft, but also eliminates the need to change carriers for different diameter specifications, reducing the operation process of carrier replacement and shortening the time cost of specification switching. This allows the same set of testing devices to meet the testing needs of various tractor end drive shafts. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 A magnified view of the area indicated by A1 in the diagram; Figure 3 This is a top view of the present invention; Figure 4 A three-dimensional structural diagram of the shaft carrier; Figure 5 This is a top view of the shaft length detection mechanism; Figure 6 for Figure 5 Sectional view along line AA; Figure 7 for Figure 6 The enlarged view of the area indicated by A2 in the diagram; Figure 8 An exploded view of the three-dimensional structure of the pusher head; Figure 9 This is a three-dimensional structural diagram of the push tube and the insert tube.

[0015] In the diagram: 1. Flat chain conveyor; 2. Conveyor chain; 3. Shaft carrier; 4. Push shaft head; 5. Laser rangefinder; 6. Reflector; 7. V-shaped strip; 8. Mounting plate; 9. Limiting baffle; 10. Outer expansion section; 11. Push plate; 12. Push cylinder; 13. Sliding shaft; 14. Spring; 15. Pressure sensor; 16. Clearance notch; 17. Insert cylinder; 18. First limiting ring; 19. Retaining ring; 20. Columnar mounting base; 21. Second limiting ring; 22. Mounting bracket; 23. Cylinder; 24. Sliding rod; 25. Limiting sleeve. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0018] refer to Figures 1 to 2 The device shown is an online detection and calibration device for the production of tractor end-drive components. It includes a horizontally arranged flat chain conveyor 1, a conveyor chain 2 inside the flat chain conveyor 1, and several shaft carriers 3 evenly distributed around the conveyor chain 2. Each shaft carrier 3 is used to place the drive shaft horizontally. The flat chain conveyor 1 is equipped with a calibration mechanism that self-centers and calibrates the drive shaft during transportation. The end of the flat chain conveyor 1 is equipped with a shaft length detection mechanism, which includes a shaft pusher 4, a laser rangefinder 5, and a reflector 6. The shaft pusher 4 is used to abut one end of the drive shaft and drive its axial displacement. The laser rangefinder 5 is connected to the shaft pusher 4. The reflector 6 restricts the axial displacement of the drive shaft by abutting the end of the drive shaft and provides a target point for the laser rangefinder 5 to reflect.

[0019] This device is used for online detection of whether the shaft length of the tractor's end drive shaft meets the standard. The specific operating procedure is as follows: Start the flat chain conveyor 1. While the conveyor chain 2 rotates, place the drive shafts to be tested sequentially into the corresponding shaft carriers 3. During transport, the drive shafts are centered and aligned using a correction mechanism. Once centered, as the conveyor chain 2 continues to rotate, the drive shafts will move towards the shaft length detection mechanism at the end of the flat chain conveyor 1. When the drive shaft reaches the shaft length detection mechanism, the flat chain conveyor is shut down, and the pusher head 4 extends and pushes the drive shaft towards the reflector plate 6. When the end of the drive shaft contacts the reflector plate 6, the pusher head 4 stops extending. At this point, the shaft length of the drive shaft is detected by a laser rangefinder 5. During this process, the light emitted by the laser rangefinder 5 will pass through... The reflector 6 is reflected back, and the distance between the pusher head 4 and the reflector 6 is calculated based on this distance. Since the reflector 6 and the pusher head 4 are in contact with the two ends of the transmission shaft at this time, the distance between the pusher head 4 and the reflector 6 is the shaft length of the transmission shaft. After the shaft length of the transmission shaft is determined, the obtained value is compared with the standard shaft length to determine whether the shaft length of the transmission shaft meets the standard. In actual use, both ends of the flat chain conveyor 1 are equipped with robotic arms (not shown in the figure). The robotic arm at the beginning of the flat chain conveyor 1 is used to place the transmission shaft to be tested into the shaft carrier 3, and the robotic arm at the end of the flat chain conveyor 1 is used to remove the tested transmission shaft from the shaft carrier 3.

[0020] refer to Figure 3 and Figure 4 As shown, each shaft carrier 3 includes a V-shaped strip 7 and a mounting plate 8. The V-shaped strip 7 is horizontally arranged and has a V-shaped cross-section. The V-shaped strip 7 is located above the mounting plate 8 and is fixedly connected to the conveyor chain 2 through the mounting plate 8.

[0021] V-shaped plate 7 is used to accommodate the drive shaft. When the drive shaft is placed on V-shaped plate 7, the drive shaft cannot move left or right, but can only move along its axial direction. V-shaped plate 7 can support drive shafts of different diameters.

[0022] refer to Figure 1 and Figure 3 As shown, the correction mechanism includes two symmetrical limiting baffles 9. The two limiting baffles 9 are fixedly connected to the outer walls on both sides of the flat chain conveyor 1. Each limiting baffle 9 is vertical, and one end of each limiting baffle 9 expands outward to form an expansion portion 10. Each expansion portion 10 is close to the beginning of the flat chain conveyor 1. The reflector 6 is fixedly connected to one of the limiting baffles 9.

[0023] When installing the two limit baffles 9, the distance between the two limit baffles 9 is controlled to be equal to the length of the drive shaft. When the drive shaft is placed on the shaft carrier 3, as the conveyor chain 2 rotates, the drive shaft will pass through the outer expansion part 10 of the limit baffle 9. If one end of the drive shaft is longer than the other end, the longer end of the drive shaft will be abutted by the outer expansion part 10, so that the drive shaft is centered and close together. Finally, several drive shafts will be corrected to a centered state with both ends aligned.

[0024] refer to Figure 2 , Figure 6 and Figure 7 As shown, the pusher head 4 includes a pusher plate 11 and a pusher cylinder 12. The pusher cylinder 12 is horizontally arranged, and the pusher plate 11 is vertically arranged. A sliding shaft 13 is fixedly provided on one side of the pusher plate 11 and passes through the pusher cylinder 12 coaxially. The laser rangefinder 5 is fixedly connected to the pusher plate 11. A spring 14 is provided in the pusher cylinder 12 to drive the sliding shaft 13 to extend outward. A pressure sensor 15 is provided in the pusher cylinder 12 to detect the pressure of the pusher plate 11 through the sliding shaft 13. One of the limiting baffles 9 has an avoidance notch 16 for the pusher plate 11 to pass through.

[0025] Initially, spring 14 releases its elastic force and drives push plate 11 to extend outward through slide shaft 13. At this time, slide shaft 13 is away from pressure sensor 15. Push cylinder 12 is used to drive push plate 11 towards drive shaft. When push plate 11 abuts against the end of drive shaft, as push cylinder 12 continues to push, drive shaft will be driven by push plate 11 to perform axial displacement. In actual working conditions, spring 14 with a large stiffness coefficient is required so that when push plate 11 drives drive shaft displacement, spring 14 will overcome the reaction force of push plate 11 and will not be compressed. When drive shaft is pushed towards reflector plate 6 and When in contact with it, as the pusher 12 continues to push, the spring 14 will be compressed by the slide shaft 13. One end of the slide shaft 13 will gradually approach the pressure sensor 15. When the slide shaft 13 contacts the pressure sensor 15, the pressure sensor 15 will detect the current pressure value. When the operator observes a pressure change through the external display, the pusher 12 can be stopped from continuing to move. Finally, when the pusher 12 stops moving, it can be ensured that the drive shaft is clamped by the reflector 6 and the pusher 11, further ensuring that the distance between the reflector 6 and the pusher 11 is the current shaft length of the drive shaft.

[0026] refer to Figures 7 to 9 As shown, the end of the push cylinder 12 away from the limiting baffle 9 is an open structure, and an insert 17 is fixedly provided inside the push cylinder 12. The insert 17 is coaxially inserted into the push cylinder 12 through the open end of the push cylinder 12. A first limiting ring 18 is coaxially formed at one end of the insert 17. One end of the sliding shaft 13 coaxially passes through the first limiting ring 18 and extends into the insert 17. The pressure sensor 15 is fixed inside the insert 17. A retaining ring 19 located inside the push cylinder 12 is coaxially formed on the outer wall of the sliding shaft 13. A spring 14 is sleeved on the sliding shaft 13, and the two ends of the spring 14 abut against the retaining ring 19 and the first limiting ring 18, respectively.

[0027] The two ends of the spring 14 abut against the retaining ring 19 and the first limiting ring 18 respectively. Since the first limiting ring 18 is in a fixed state, the spring 14 will release its elastic force and drive the sliding shaft 13 to extend outward through the retaining ring 19. When the transmission shaft is pushed to abut against the reflector 6, as the pusher 12 continues to push, the sliding shaft 13 will drive the retaining ring 19 to compress the spring 14, eventually causing the spring 14 to generate elastic force.

[0028] refer to Figure 7 and Figure 8 As shown, the end of the insert 17 away from the first limiting ring 18 is open, and a columnar mounting seat 20 is fixedly provided inside the insert 17. The columnar mounting seat 20 is coaxially inserted into the insert 17 through the opening of the insert 17, and the pressure sensor 15 is fixedly connected to the columnar mounting seat 20.

[0029] When installing the pressure sensor 15, first fix the pressure sensor 15 to the columnar mounting base 20, then insert the columnar mounting base 20 carrying the pressure sensor 15 coaxially into the insert 17 through the opening of the insert 17, and finally fix the columnar mounting base 20 and the insert 17 together.

[0030] refer to Figure 2 and Figure 7 As shown, a second limiting ring 21 is coaxially formed at one end of the push cylinder 12 near the limiting baffle 9. The sliding shaft 13 coaxially passes through the second limiting ring 21 and extends into the push cylinder 12. The retaining ring 19 restricts the extension stroke of the sliding shaft 13 by abutting against the second limiting ring 21.

[0031] When the spring 14 releases its elastic force to drive the slide shaft 13 to extend outward, the retaining ring 19 on the outer wall of the slide shaft 13 will abut against the second limiting ring 21, thereby limiting the extension stroke of the slide shaft 13 and preventing the slide shaft 13 from separating from the push cylinder 12.

[0032] refer to Figure 2 and Figure 6 As shown, a mounting frame 22 is fixedly connected to the flat chain conveyor 1 below the push cylinder 12. A horizontal cylinder 23 is fixedly mounted on the mounting frame 22. The output end of the cylinder 23 is fixedly connected to the push cylinder 12. A sliding rod 24 is fixedly mounted on the top of the push cylinder 12 and is parallel to the push cylinder 12. A limiting sleeve 25 is fixedly mounted on the mounting frame 22 for the sliding rod 24 to pass through horizontally.

[0033] The cylinder 23, which is fixed to the mounting bracket 22, is used to drive the push cylinder 12 to translate. During the translation of the push cylinder 12, the sliding direction of the push cylinder 12 is restricted by the cooperation of the slide rod 24 and the limiting sleeve 25, so as to ensure that the push cylinder 12 can only translate along its axial direction.

[0034] This device is used for online detection of whether the shaft length of the tractor's end drive shaft meets the standard. The specific operating procedure is as follows: I. Feeding and Conveying The drive shaft to be tested is placed in the shaft carrier 3. The V-shaped strip 7 in the shaft carrier 3 can support drive shafts of different diameters and restrict their left and right movement, allowing only axial displacement. Start the flat chain conveyor 1. During this process, the conveyor chain 2 drives the shaft carrier 3 and its drive shaft to move toward the shaft length detection mechanism. II. Centering Correction During transportation, the drive shaft passes through two limiting baffles 9. If the two ends of the drive shaft are not aligned in the initial state, its long end will be abutted by the outward expansion part 10, gradually guiding the drive shaft to center, and finally ensuring that all drive shafts are in a centered state with both ends aligned when they reach the detection position. III. Axis Length Inspection After the drive shaft reaches the detection position, the flat chain conveyor 1 is stopped, and the cylinder 23 drives the pusher head 4 to gradually extend. During this process, the pusher plate 11 touches the end of the drive shaft and pushes it to move towards the reflector plate 6. At this time, the spring 14 will not be compressed due to its large stiffness coefficient, ensuring the stable pushing of the drive shaft. When the end of the drive shaft touches the reflector plate 6, as the pusher cylinder 12 continues to move, the slide shaft 13 begins to retract inward. The retaining ring 19 connected to the slide shaft 13 compresses the spring 14. The slide shaft 13 approaches and triggers the pressure sensor 15. After the operator observes the pressure change through the display, the cylinder 23 stops its action to ensure that the drive shaft is tightly clamped by the pusher plate 11 and the reflector plate 6. The laser rangefinder 5, which is fixed to the push plate 11, emits light, which is reflected by the reflector 6 and then received. The distance between the push plate 11 and the reflector 6 is calculated, and this distance is the actual shaft length of the drive shaft. It is then compared with the standard shaft length to determine whether the current shaft length of the drive shaft meets the standard.

[0035] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An online testing and calibration device for tractor end-drive components, characterized in that, The system includes a horizontally arranged flat chain conveyor (1), which has a built-in conveyor chain (2). The conveyor chain (2) is provided with several shaft carriers (3) evenly distributed around it. Each shaft carrier (3) is used to place the drive shaft horizontally. The flat chain conveyor (1) is provided with a correction mechanism that centers and corrects the drive shaft during the transport process. The end of the flat chain conveyor (1) is provided with a shaft length detection mechanism, which includes a shaft pusher (4), a laser rangefinder (5), and a reflector (6). The shaft pusher (4) is used to abut one end of the drive shaft and drive its axial displacement. The laser rangefinder (5) is connected to the shaft pusher (4). The reflector (6) restricts the axial displacement of the drive shaft by abutting the end of the drive shaft and provides a target point for the laser rangefinder (5) to reflect.

2. The online testing and calibration device for tractor end-drive components according to claim 1, characterized in that, Each of the shaft carriers (3) includes a V-shaped strip (7) and a mounting plate (8). The V-shaped strip (7) is horizontally arranged and has a V-shaped cross-section. The V-shaped strip (7) is located above the mounting plate (8) and is fixedly connected to the conveyor chain (2) through the mounting plate (8).

3. The online testing and calibration device for tractor end-drive components according to claim 1, characterized in that, The correction mechanism includes two symmetrical limiting baffles (9), which are fixed to the outer walls on both sides of the flat chain conveyor (1). Each limiting baffle (9) is vertical, and one end of each limiting baffle (9) expands outward to form an expansion portion (10). Each expansion portion (10) is close to the beginning of the flat chain conveyor (1). The reflector (6) is fixed to one of the limiting baffles (9).

4. The online testing and calibration device for tractor end-drive components according to claim 3, characterized in that, The pusher head (4) includes a push plate (11) and a push cylinder (12). The push cylinder (12) is horizontally arranged, and the push plate (11) is vertically arranged. A sliding shaft (13) is fixedly provided on one side of the push plate (11) and passes through the push cylinder (12) coaxially. The laser rangefinder (5) is fixedly connected to the push plate (11). A spring (14) is provided in the push cylinder (12) for driving the sliding shaft (13) to extend outward. A pressure sensor (15) is provided in the push cylinder (12) for detecting the pressure of the push plate (11) through the sliding shaft (13). One of the limiting baffles (9) has an avoidance notch (16) for the push plate (11) to pass through.

5. The online testing and calibration device for tractor end-drive components according to claim 4, characterized in that, The end of the push tube (12) away from the limiting baffle (9) is open, and a plug tube (17) is fixedly provided inside the push tube (12). The plug tube (17) is coaxially inserted into the push tube (12) through the open end of the push tube (12). A first limiting ring (18) is coaxially formed at one end of the plug tube (17). One end of the sliding shaft (13) coaxially passes through the first limiting ring (18) and extends into the plug tube (17). The pressure sensor (15) is fixed inside the plug tube (17). A retaining ring (19) is coaxially formed on the outer wall of the sliding shaft (13) and located inside the push tube (12). The spring (14) is sleeved on the sliding shaft (13), and the two ends of the spring (14) abut against the retaining ring (19) and the first limiting ring (18) respectively.

6. The online testing and calibration device for tractor end-drive components according to claim 5, characterized in that, The end of the insert (17) away from the first limiting ring (18) is open, and a columnar mounting seat (20) is fixedly provided inside the insert (17). The columnar mounting seat (20) is coaxially inserted into the insert (17) through the opening of the insert (17), and the pressure sensor (15) is fixedly connected to the columnar mounting seat (20).

7. The online testing and calibration device for tractor end-drive components according to claim 5, characterized in that, The push cylinder (12) has a second limiting ring (21) coaxially formed at one end near the limiting baffle (9). The sliding shaft (13) coaxially passes through the second limiting ring (21) and extends into the push cylinder (12). The retaining ring (19) restricts the extension stroke of the sliding shaft (13) by abutting against the second limiting ring (21).

8. The online testing and calibration device for tractor end-drive components according to claim 4, characterized in that, The pusher (12) is provided with a mounting frame (22) fixedly connected to the flat chain conveyor (1) below it. The mounting frame (22) is fixedly provided with a horizontal cylinder (23). The output end of the cylinder (23) is fixedly connected to the pusher (12). The pusher (12) is provided with a slide rod (24) fixedly connected to it above it. The slide rod (24) is parallel to the pusher (12). The mounting frame (22) is fixedly provided with a limiting sleeve (25) for the slide rod (24) to pass through horizontally.

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