Tractor sleeve assembly with adjustable wheel track

Abstract

The utility model discloses a tractor sleeve assembly with adjustable wheel track, which relates to the technical field of tractors and comprises a half shaft casing, an adjustable driving shaft is rotatably mounted in the center of the half shaft casing, the right end of the half shaft casing of the adjustable driving shaft is connected with a planet carrier through a right half shaft, and the right end of the adjustable driving shaft is fixedly connected with the left end of the right half shaft. A hub adjusting shaft is arranged at the left end of the half shaft shell, a wear-resisting bush is fixedly connected to the outer side of the hub adjusting shaft in a sleeving mode, and the driving hub and a hub fixing slip rub against the wear-resisting bush, so that extrusion deformation and friction at the fixing position of the driving hub and the hub fixing slip are both located on the outer wall of the wear-resisting bush, and when the wear-resisting bush is seriously abraded, the wear-resisting bush can not be damaged. By means of the structure, the tractor frame can be directly jacked up, after the driving hub and the hub fixing slip are detached, the abrasion-resistant lining is directly replaced, the adjustable driving shaft does not need to be replaced, the maintenance efficiency of the tractor is greatly improved, the maintenance cost of the tractor is reduced, the farming cost is reduced, and economic benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a bushing assembly of a tractor with adjustable wheelbase. Background Art

[0002] A tractor is a self-propelled power machine used to tow and drive work machinery to complete various mobile operations. It can also be used as a fixed working power. It is composed of engine, transmission, travel, steering, hydraulic suspension, power output, electrical instruments, driving control and traction systems or devices. The engine power is transmitted to the drive wheels through the transmission system to make the tractor move.

[0003] Relevant technicians engaged in tractor maintenance have found in their work that high-horsepower tractors need to adjust the wheel width to adapt to the needs of various ridge spacing crops when working. In the prior art, a wheel hub fixed with slips is fixed at the outer end of an adjustable drive shaft, and the adjustment can be achieved by adjusting the fixed position of the wheel hub. However, when a high-horsepower tractor is working, the tire working torque is large, resulting in large friction between the slips and the outer end of the adjustable drive shaft, causing serious wear on the outer end of the adjustable drive shaft, reducing the service life of the adjustable drive shaft, and making the maintenance and replacement of the adjustable drive shaft troublesome and costly, thereby increasing the cost of farming. For this reason, we propose a sleeve assembly for an adjustable wheel width of a tractor. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that a high-horsepower tractor needs to adjust the wheel width to adapt to the needs of various ridge spacing crops when working. In the prior art, a wheel hub fixed with slips is fixed at the outer end of an adjustable drive shaft, and the adjustment can be achieved by adjusting the fixed position of the wheel hub. However, when a high-horsepower tractor is working, the working torque of the tire is large, resulting in large friction between the slips and the outer end of the adjustable drive shaft, resulting in serious wear of the outer end of the adjustable drive shaft, reducing the service life of the adjustable drive shaft, and making the maintenance and replacement of the adjustable drive shaft troublesome and costly, thereby increasing the cost of farming. The utility model provides a sleeve assembly for an adjustable wheel width of a tractor.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] The tractor according to the present invention has an adjustable wheelbase sleeve assembly, comprising a half-axle shell, wherein an adjustable driving shaft is rotatably installed at the center of the half-axle shell, and the right end of the half-axle shell of the adjustable driving shaft is connected to a planetary carrier through a right half-axle, and the right end of the adjustable driving shaft is fixedly connected to the left end of the right half-axle, and a wheel hub adjusting shaft is arranged at the left end of the half-axle shell, and a wear-resistant bushing is sleeved and fixed to the outer side of the wheel hub adjusting shaft, a driving wheel hub is sleeved on the outer side of the wear-resistant bushing, and a wheel hub fixing slip is inserted into the outer side of the driving wheel hub, a conical clamping block is fixedly connected to the right side of the wheel hub fixing slip, and a conical step is correspondingly provided on the outer side of the inner wall of the driving wheel hub, a plurality of wheel hub fixing bolts are inserted into the outer side of the wheel hub fixing slip, and the plurality of wheel hub fixing bolts are threadedly connected to the left side of the driving wheel hub after penetrating the wheel hub fixing slip, bearing flat surfaces are arranged on both sides of the wheel hub adjusting shaft, and fitting protrusions are provided at positions of the inner wall of the wheel hub fixing slip corresponding to the bearing flat surfaces.

[0007] Furthermore, a square slot is formed on the inner wall of the hub fixing clamshell and a reinforcing block is movably inserted in the square slot. A clamping bolt is rotatably installed at the center of the square slot of the hub fixing clamshell and a screw hole is formed at the center of the reinforcing block. The inner end of the clamping bolt passes through the hub fixing clamshell and is threadedly connected to the reinforcing block.

[0008] Furthermore, vertical surfaces are provided on both sides of the wear-resistant bushing corresponding to the flat surface of the bearing, and a friction rubber pad is buried in the center of the outer side of the vertical surface, and the inner side of the reinforcement block is against the outer side of the friction rubber pad.

[0009] Furthermore, a sawtooth-shaped protrusion is provided on the inner side of the reinforcement block, and the thickness of the reinforcement block is less than the depth of the square groove of the wheel hub fixing slip.

[0010] Furthermore, a shaft end retaining ring is placed in close contact with the left side of the hub adjusting shaft, and a shaft end fixing bolt is inserted through the center of the shaft end retaining ring, and the right end of the shaft end fixing bolt passes through the shaft end retaining ring and is connected to the outer side thread of the hub adjusting shaft.

[0011] Furthermore, a reinforcing edge is fixedly connected to the left inner wall of the wear-resistant bushing, and an annular step is provided on the outer side of the hub adjusting shaft corresponding to the reinforcing edge.

[0012] Furthermore, two T-shaped slots are provided on the bearing flat surfaces on both sides, and two T-shaped clips are fixedly connected to the inner walls on both sides of the wear-resistant bushing, and the T-shaped clips on both sides are correspondingly inserted into the T-shaped slots.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides a half-axle shell, and the adjustable driving shaft in the half-axle shell is driven to rotate through the transmission of the planetary carrier and the right half-axle, and the wheel hub adjusting shaft outside the half-axle shell can fix the driving wheel hub, thereby driving the tractor wheel to rotate. The wear-resistant bushing is sleeved on the outer side of the wheel hub adjusting shaft, contacts and rubs with the driving wheel hub and the wheel hub fixing slips, and limits the driving wheel hub and the wheel hub fixing slips through the flat surfaces of the bearings on both sides to avoid slipping when the driving wheel hub torque is too large. The driving wheel hub and the wheel hub fixing slips rub against the wear-resistant bushing, so that the extrusion deformation and friction of the driving wheel hub and the wheel hub fixing slips are all on the outer wall of the wear-resistant bushing. When the wear-resistant bushing is seriously worn, the tractor frame can be directly lifted up, and the driving wheel hub and the wheel hub fixing slips can be removed and then the wear-resistant bushing can be directly replaced without replacing the adjustable driving shaft, which greatly improves the maintenance efficiency of the tractor, reduces the maintenance cost of the tractor, reduces the farming cost, and improves the economic benefit.

[0015] 2. The utility model provides a reinforcing pressure block and a clamping bolt. The clamping bolt rotates on the center of the outer wall of the wheel hub fixing cava near the left side. By rotating the clamping bolt, the clamping bolt can cooperate with the thread of the reinforcing pressure block to push the reinforcing pressure block inward, so that the reinforcing pressure block is clamped on both sides of the wear-resistant bushing, further reinforcing the position of the wheel hub fixing cava and improving the fixing effect of the wheel hub fixing cava.

[0016] 3. The utility model provides a friction rubber pad, which can contact and rub with the reinforcement pressure block, thereby improving the fixing effect of the reinforcement pressure block, improving the stability of the wheel hub fixing slip, and increasing the service life of the wear-resistant bushing by reducing the wear and deformation of the contact position between the reinforcement pressure block and the wear-resistant bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the internal structure diagram of the utility model;

[0018] Figure 2 It is a partial stereogram of the connection of the hub adjustment shaft of the utility model;

[0019] Figure 3 It is a partial top sectional view of the wheel hub adjustment shaft of the utility model;

[0020] Figure 4 It is a side sectional view of the hub adjusting shaft end of the utility model.

[0021] Figure numerals: 1. half-axle housing; 2. adjustable drive shaft; 3. planetary carrier; 4. right half-axle; 5. hub adjustment shaft; 6. wear-resistant bushing; 7. driving hub; 8. hub fixing cava; 9. hub fixing bolt; 10. bearing flat surface; 11. friction rubber pad; 12. reinforcement pressure block; 13. clamping bolt; 14. T-shaped clamp strip; 15. shaft end retaining ring; 16. shaft end fixing bolt; 17. reinforcement pressure edge. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0023] See also Figure 1 - Figure 4 The utility model provides a sleeve assembly of a tractor with adjustable wheelbase, including a half-axle shell 1, an adjustable drive shaft 2 is rotatably mounted at the center of the half-axle shell 1, and the right end of the half-axle shell 1 of the adjustable drive shaft 2 is connected to a planet carrier 3 through a right half-axle 4, and the right end of the adjustable drive shaft 2 and the left end of the right half-axle 4 are fixedly connected, a wheel hub adjusting shaft 5 is arranged at the left end of the half-axle shell 1, and a wear-resistant bushing 6 is sleeved and fixed on the outer side of the wheel hub adjusting shaft 5, a drive hub 7 is sleeved on the outer side of the wear-resistant bushing 6, and the drive hub 7 A wheel hub fixing cava 8 is inserted into the outer side, a conical block is fixedly connected to the right side of the wheel hub fixing cava 8, and a conical step is correspondingly provided on the outer side of the inner wall of the driving hub 7, a plurality of wheel hub fixing bolts 9 are inserted into the outer side of the wheel hub fixing cava 8, and the plurality of wheel hub fixing bolts 9 penetrate the wheel hub fixing cava 8 and are threadedly connected to the left side of the driving hub 7, bearing flat surfaces 10 are provided on both sides of the wheel hub adjusting shaft 5, and a fitting protrusion is provided on the inner wall of the wheel hub fixing cava 8 corresponding to the bearing flat surface 10.

[0024] In the present embodiment, preferably, a square groove is provided on the inner wall of the hub fixing cava 8 which fits the protrusion, and a reinforcing pressure block 12 is movably inserted in the square groove, a clamping bolt 13 is rotatably installed at the center of the square groove of the hub fixing cava 8, and a screw hole is provided at the center of the reinforcing pressure block 12, and the inner end of the clamping bolt 13 passes through the hub fixing cava 8 and is threadedly connected with the reinforcing pressure block 12; through the provided reinforcing pressure block 12 and the clamping bolt 13, the clamping bolt 13 is rotated at the center of the outer wall of the hub fixing cava 8 near the left side, and by rotating the clamping bolt 13, the clamping bolt 13 can push the reinforcing pressure block 12 inward by cooperating with the thread of the reinforcing pressure block 12, so that the reinforcing pressure block 12 is clamped on both sides of the wear-resistant bushing 6, thereby further reinforcing the position of the hub fixing cava 8 and improving the fixing effect of the hub fixing cava 8.

[0025] In the present embodiment, preferably, vertical surfaces are provided on both sides of the wear-resistant bushing 6 corresponding to the bearing flat surfaces 10, and a friction rubber pad 11 is buried in the outer center of the vertical surface, and the inner side of the reinforcement pressure block 12 is against the outer side of the friction rubber pad 11; through the provided friction rubber pad 11, the friction rubber pad 11 can contact and rub with the reinforcement pressure block 12, thereby improving the fixing effect of the reinforcement pressure block 12, improving the stability of the wheel hub fixing cava 8, and by reducing the wear and deformation of the contact position between the reinforcement pressure block 12 and the wear-resistant bushing 6, the service life of the wear-resistant bushing 6 is improved.

[0026] In the present embodiment, preferably, a serrated protrusion is provided on the inner side of the reinforcing pressure block 12, and the thickness of the reinforcing pressure block 12 is less than the depth of the square groove of the wheel hub fixing clap 8; by setting the serrated protrusion, the friction at the contact position between the reinforcing pressure block 12 and the friction rubber pad 11 is increased after the serrated protrusion is pressed into the friction rubber pad 11, and the thickness of the reinforcing pressure block 12 is less than the depth of the square groove of the wheel hub fixing clap 8, so that the reinforcing pressure block 12 can be completely received in the square groove, which facilitates the separation of the reinforcing pressure block 12 from the friction rubber pad 11, thereby ensuring smooth movement when the wheel hub fixing clap 8 adjusts its position.

[0027] In this embodiment, preferably, a shaft end retaining ring 15 is placed in close contact with the left side of the hub adjusting shaft 5, and a shaft end fixing bolt 16 is inserted through the center of the shaft end retaining ring 15, and the right end of the shaft end fixing bolt 16 passes through the shaft end retaining ring 15 and is connected to the outer side of the hub adjusting shaft 5 through the outer thread; through the set shaft end retaining ring 15 and the shaft end fixing bolt 16, the shaft end fixing bolt 16 fixes the shaft end retaining ring 15 to the outer side of the hub adjusting shaft 5, while limiting and fixing the wear-resistant bushing 6, preventing the driving hub 7 and the hub fixing cava 8 from slipping.

[0028] In this embodiment, preferably, the left inner wall of the wear-resistant bushing 6 is fixedly connected with a reinforcing edge 17, and the outer side of the hub adjustment shaft 5 is provided with an annular step corresponding to the reinforcing edge 17; by setting the reinforcing edge 17, the left side of the wear-resistant bushing 6 is conveniently pressed and fixed between the hub adjustment shaft 5 and the shaft end retaining ring 15, while effectively avoiding pressure concentration on the left side of the wear-resistant bushing 6, thereby improving the service life of the wear-resistant bushing 6.

[0029] In this embodiment, preferably, two T-shaped grooves are provided on the flat surfaces 10 of the bearings on both sides, and two T-shaped clip strips 14 are fixedly connected to the inner walls on both sides of the wear-resistant bushing 6, and the T-shaped clip strips 14 on both sides are inserted into the T-shaped slide grooves one by one; the T-shaped grooves and T-shaped clip strips 14 are provided, and the firmness of the fixation of the wear-resistant bushing 6 is improved.

[0030] The working principle and use process of the utility model are as follows: when the device is used, the adjustable drive shaft 2 in the half-shaft shell 1 is driven to rotate through the transmission of the planet carrier 3 and the right half-shaft 4, and the wheel hub adjustment shaft 5 on the outside of the half-shaft shell 1 can fix the drive wheel hub 7, thereby driving the tractor wheel to rotate, and the wear-resistant bushing 6 is set, and the wear-resistant bushing 6 is sleeved on the outside of the wheel hub adjustment shaft 5, and contacts and rubs with the drive wheel hub 7 and the wheel hub fixing slip 8, and the drive wheel hub 7 and the wheel hub fixing slip 8 are limited by the bearing flat surfaces 10 on both sides, so as to avoid the drive wheel hub 7 and the wheel hub fixing slip 8 from being rotated. When the torque of the driving wheel hub 7 is too large, it slips, and the driving wheel hub 7 and the wheel hub fixing slips 8 rub against the wear-resistant bushing 6, so that the extrusion deformation and friction at the fixing point of the driving wheel hub 7 and the wheel hub fixing slips 8 are all on the outer wall of the wear-resistant bushing 6. When the wear-resistant bushing 6 is severely worn, the tractor frame can be directly lifted up, and the driving wheel hub 7 and the wheel hub fixing slips 8 can be removed and then the wear-resistant bushing 6 can be directly replaced without replacing the adjustable drive shaft 2, which greatly improves the maintenance efficiency of the tractor, reduces the maintenance cost of the tractor, reduces the farming cost, and improves the economic benefit.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bushing assembly for an adjustable wheelbase of a tractor, comprising a half-axle housing (1), an adjustable drive shaft (2) being rotatably mounted at the center of the half-axle housing (1), and a planet carrier (3) being connected to the right end of the half-axle housing (1) of the adjustable drive shaft (2) via a right half-axle (4), and the right end of the adjustable drive shaft (2) and the left end of the right half-axle (4) being fixedly connected, characterized in that: A wheel hub adjustment shaft (5) is provided at the left end of the half-axle housing (1), and a wear-resistant bushing (6) is sleeved and fixed on the outer side of the wheel hub adjustment shaft (5), a driving wheel hub (7) is sleeved on the outer side of the wear-resistant bushing (6), and a wheel hub fixing cava (8) is inserted on the outer side of the driving wheel hub (7), a conical clamping block is fixedly connected to the right side of the wheel hub fixing cava (8), and a conical step is correspondingly provided on the outer side of the inner wall of the driving wheel hub (7), a plurality of wheel hub fixing bolts (9) are inserted on the outer side of the wheel hub fixing cava (8), and the plurality of wheel hub fixing bolts (9) are threadedly connected to the left side of the driving wheel hub (7) after passing through the wheel hub fixing cava (8), and a bearing flat surface (10) is provided on both sides of the wheel hub adjustment shaft (5), and a fitting convex block is provided on the inner wall of the wheel hub fixing cava (8) at a position corresponding to the bearing flat surface (10).

2. The bushing assembly for a tractor with adjustable wheel track according to claim 1, characterized in that: The wheel hub fixing clapboard (8) is provided with a square slot which fits the inner wall of the protrusion, and a reinforcing block (12) is movably inserted in the square slot; a clamping bolt (13) is rotatably installed at the center of the square slot of the wheel hub fixing clapboard (8), and a screw hole is provided at the center of the reinforcing block (12); the inner end of the clamping bolt (13) passes through the wheel hub fixing clapboard (8) and is threadedly connected to the reinforcing block (12).

3. The bushing assembly for a tractor with adjustable wheel track according to claim 2, characterized in that: Vertical surfaces are arranged on both sides of the wear-resistant bushing (6) corresponding to the bearing flat surface (10), and a friction rubber pad (11) is buried in the center of the outer side of the vertical surface, and the inner side of the reinforcement pressure block (12) abuts against the outer side of the friction rubber pad (11).

4. The bushing assembly for a tractor with adjustable wheel track according to claim 3, characterized in that: A sawtooth-shaped protrusion is provided on the inner side of the reinforcing pressing block (12), and the thickness of the reinforcing pressing block (12) is less than the depth of the square groove of the wheel hub fixing slip (8).

5. The bushing assembly for a tractor with adjustable wheel track according to claim 1, characterized in that: A shaft end retaining ring (15) is placed in close contact with the left side of the wheel hub adjusting shaft (5), and a shaft end fixing bolt (16) is inserted through the center of the shaft end retaining ring (15), and the right end of the shaft end fixing bolt (16) passes through the shaft end retaining ring (15) and is connected to the outer side of the wheel hub adjusting shaft (5) through a thread.

6. The bushing assembly for a tractor with adjustable wheel track according to claim 5, characterized in that: A reinforcing edge (17) is fixedly connected to the left inner wall of the wear-resistant bushing (6), and an annular step is provided on the outer side of the hub adjustment shaft (5) corresponding to the reinforcing edge (17).

7. The bushing assembly for a tractor with adjustable wheel track according to claim 1, characterized in that: Two T-shaped slots are provided on the bearing flat surfaces (10) on both sides, and two T-shaped clip strips (14) are fixedly connected to the inner walls on both sides of the wear-resistant bushing (6), and the T-shaped clip strips (14) on both sides are correspondingly inserted into the T-shaped slots.

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