Hydraulic locking differential lock for tractors

Abstract

The utility model provides a kind of hydraulic lock differential lock for tractor, including box, left bearing seat and right bearing seat are fixedly connected in the box, power transmission assembly is connected between the left bearing seat and right bearing seat, differential lock assembly is sleeved outside the power transmission assembly, the differential lock assembly includes differential cover and differential shell, a plurality of steel sheets are fixedly connected in the differential shell, pressure plate is movably connected in the differential cover, the pressure plate is connected with a plurality of friction plate, oil supply component is provided in the left bearing seat with differential cover. Pressure plate axial movement compacts friction plate and steel sheet, so that half shaft gear and differential shell synchronous rotation, realize differential lock locking function. Simple structure facilitates easy operation, can faster realize the combination and separation of differential lock, the oil supply component arrangement simple, simple processing, compact structure, suitable for mass production.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, and more specifically, to a hydraulic locking differential lock for tractors. Background Technology

[0002] When tractors are operating in farmland, they often encounter slippery, muddy, or uneven ground, which can cause one drive wheel to slip and the vehicle to become stuck. In such cases, it is necessary to lock the differential lock and use the driving force of the other wheel to get the tractor out of trouble. Traditional differential lock devices are mostly mechanical structures, which are complex in overall design, heavy to operate, have a short service life, and a high failure rate. Moreover, the existing hydraulic locking differential locks are also cumbersome in overall design and not suitable for mass production. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned traditional technologies and provide a hydraulically controlled hydraulic locking differential lock for tractors.

[0004] The objective of this utility model is achieved through the following technical measures:

[0005] A hydraulic locking differential lock for a tractor, characterized in that: it includes a housing, a left bearing seat and a right bearing seat are fixedly connected inside the housing, a power transmission assembly is connected between the left bearing seat and the right bearing seat, a differential lock assembly is sleeved on the outside of the power transmission assembly, the differential lock assembly includes a differential cover and a differential housing, a plurality of steel plates are fixedly connected inside the differential housing, a pressure plate is movably connected inside the differential cover, a plurality of friction plates are connected to the pressure plate, the plurality of friction plates and the plurality of steel plates are arranged in an alternating stack, and an oil supply assembly is provided inside the left bearing seat and the differential cover.

[0006] As an improvement: the oil supply assembly includes an oil inlet pipe, a pipe connector is fixedly connected inside the left bearing housing, the pipe connector is fixedly connected to one end of the oil inlet pipe, and an oil passage is opened inside the differential cover, the oil passage being arranged corresponding to the oil inlet pipe.

[0007] As an improvement, sealing rings are fitted on both the inner and outer sides of the pressure plate, and the sealing rings are set in close contact with the differential cover.

[0008] As an improvement: the left bearing housing is rotatably connected to a left drive shaft, and the end of the left drive shaft is fixedly connected to a left half-shaft gear; the right bearing housing is rotatably connected to a right drive shaft, and the end of the right drive shaft is fixedly connected to a right half-shaft gear.

[0009] As an improvement: the power transmission assembly includes a power input shaft, and a planetary gear is fixedly connected to the end of the power input shaft. The planetary gear meshes with the left half-shaft gear and the right half-shaft gear respectively for transmission.

[0010] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0011] This invention features an oil inlet within the housing. Hydraulic oil enters the oil inlet pipe through this inlet, then flows through pipe joints and oil passages within the differential cover to the pressure plate. This pressure plate moves axially, pressing against the friction plates and steel plates, thereby causing the half-shaft gear to rotate synchronously with the differential housing, achieving the differential lock function. The simple structure facilitates easy operation, enabling faster engagement and disengagement of the differential lock. The oil supply components are simply arranged, easy to manufacture, and compact, making it suitable for mass production. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is an enlarged structural schematic diagram of the differential lock assembly in this utility model.

[0014] 1. Housing; 2. Power transmission assembly; 21. Power input shaft; 22. Planetary gear; 23. Left half-shaft gear; 24. Right half-shaft gear; 25. Left drive shaft; 26. Right drive shaft; 3. Left bearing housing; 4. Right bearing housing; 5. Differential lock assembly; 51. Differential cover; 52. Differential housing; 53. Pressure plate; 54. Sealing ring; 55. Steel plate; 56. Friction plate; 6. Oil supply assembly; 61. Oil inlet pipe; 62. Pipe fitting; 63. Oil passage. Detailed Implementation

[0015] Example: Figure 1 and 2 As shown, a hydraulic locking differential lock for a tractor includes a housing 1. A left bearing seat 3 and a right bearing seat 4 are fixedly connected inside the housing 1. A power transmission assembly 2 is connected between the left bearing seat 3 and the right bearing seat 4. A differential lock assembly 5 is sleeved on the outside of the power transmission assembly 2. The differential lock assembly 5 includes a differential cover 51 and a differential housing 52. A plurality of steel plates 55 are fixedly connected inside the differential housing 52. A pressure plate 53 is movably connected inside the differential cover 51. A plurality of friction plates 56 are connected to the pressure plate 53. The plurality of friction plates 56 and the plurality of steel plates 55 are arranged in an alternating stacked manner. An oil supply assembly 6 is provided inside the left bearing seat 3 and the differential cover 51.

[0016] By staggering the friction plates 56 and multiple steel plates 55, the friction plates 56 and steel plates 55 can be brought into close contact when the pressure plate 53 pushes the friction plates 56, thereby achieving synchronous movement of the differential cover 51, differential housing 52 and left half-shaft gear 23, thus realizing the function of differential lock and ensuring that both sides rotate simultaneously.

[0017] The oil supply assembly 6 includes an oil inlet pipe 61. A pipe connector 62 is fixedly connected inside the left bearing housing 3. The pipe connector 62 is fixedly connected to one end of the oil inlet pipe 61. An oil passage 63 is provided inside the differential cover 51, and the oil passage 63 is correspondingly arranged with the oil inlet pipe 61. Oil can be supplied to the pipe connector 62 through the oil inlet pipe 61. The oil enters the oil passage 63 through the pipe connector 62, thereby enabling the oil supply assembly 6 to control the back-and-forth movement of the pressure plate 53.

[0018] The pressure plate 53 is fitted with sealing rings 54 on both its inner and outer sides, and the sealing rings 54 are set in close contact with the differential cover 51. The sealing rings 54 can ensure the airtightness of the pressure plate 53 and prevent the oil in the oil passage 63 from overflowing. On the other hand, the sealing rings 54 can ensure the normal back-and-forth movement of the pressure plate 53, thereby realizing the compression of the friction plate 56.

[0019] The left bearing housing 3 is rotatably connected to a left drive shaft 25, and a left half-shaft gear 23 is fixedly connected to the end of the left drive shaft 25. The right bearing housing 4 is rotatably connected to a right drive shaft 26, and a right half-shaft gear 24 is fixedly connected to the end of the right drive shaft 26. The left half-shaft gear 23 drives the left drive shaft 25 to rotate, and the right half-shaft gear 24 drives the right drive shaft 26 to rotate, thereby realizing the normal rotation of the wheel sets on both sides.

[0020] The power transmission assembly 2 includes a power input shaft 21, with a planetary gear 22 fixedly connected to the end of the power input shaft 21. The planetary gear 22 meshes with the left half-shaft gear 23 and the right half-shaft gear 24 respectively. Power can be transmitted to the planetary gear 22 via the power input shaft 21, and the meshing of the planetary gear 22 with the left half-shaft gear 23 and the right half-shaft gear 24 achieves directional power transmission.

Claims

1. A hydraulic locking differential lock for tractors, characterized in that: The system includes a housing (1), in which a left bearing seat (3) and a right bearing seat (4) are fixedly connected. A power transmission assembly (2) is connected between the left bearing seat (3) and the right bearing seat (4). A differential lock assembly (5) is sleeved on the outside of the power transmission assembly (2). The differential lock assembly (5) includes a differential cover (51) and a differential housing (52). Multiple steel plates (55) are fixedly connected inside the differential housing (52). A pressure plate (53) is movably connected inside the differential cover (51). Multiple friction plates (56) are connected to the pressure plate (53). The multiple friction plates (56) and the multiple steel plates (55) are stacked alternately. An oil supply assembly (6) is provided inside the left bearing seat (3) and the differential cover (51).

2. A hydraulic locking differential lock for tractors according to claim 1, characterized in that: The oil supply assembly (6) includes an oil inlet pipe (61), and a pipe connector (62) is fixedly connected inside the left bearing housing (3). The pipe connector (62) is fixedly connected to one end of the oil inlet pipe (61), and an oil passage (63) is opened inside the differential cover (51). The oil passage (63) is correspondingly arranged with the oil inlet pipe (61).

3. A hydraulic locking differential lock for tractors according to claim 1, characterized in that: The pressure plate (53) is fitted with sealing rings (54) on both the inner and outer sides, and the sealing rings (54) are closely fitted to the differential cover (51).

4. A hydraulic locking differential lock for tractors according to claim 1, characterized in that: The left bearing housing (3) is rotatably connected to the left drive shaft (25), and the end of the left drive shaft (25) is fixedly connected to the left half-shaft gear (23). The right bearing housing (4) is rotatably connected to the right drive shaft (26), and the end of the right drive shaft (26) is fixedly connected to the right half-shaft gear (24).

5. A hydraulic locking differential lock for tractors according to claim 4, characterized in that: The power transmission assembly (2) includes a power input shaft (21), and a planetary gear (22) is fixedly connected to the end of the power input shaft (21). The planetary gear (22) is meshed with the left half-shaft gear (23) and the right half-shaft gear (24) respectively.

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