Axle oil way structure

Abstract

The utility model discloses an axle oil way structure which comprises an axle housing, a driven bevel gear, a first half shaft bevel gear and a second half shaft bevel gear are installed in the axle housing, the first half shaft bevel gear is connected with a first half shaft, the second half shaft bevel gear is connected with a second half shaft, the axle oil way structure further comprises a differential housing, and the driven bevel gear is installed on the outer side of the differential housing in a fixed connection mode. The first half shaft bevel gear is installed in the differential shell in a rotating connection mode, the differential shell is provided with a tooth back sleeve capable of being connected to the first half shaft in a sleeving mode, the first oil port is located in the connecting position of the side portion of the end, stretching into the differential shell, of the tooth back sleeve and the differential shell, and the side portion of the end, stretching out of the differential shell, of the tooth back sleeve is provided with a second oil port. The tooth back sleeve is provided with a first oil way communicating with the first oil port and the second oil port. During use, hydraulic oil passes through the second oil port, the first oil way and the first oil port and then enters the differential shell, and a device needing oil pressure driving is conveniently installed on the differential shell.

Description

Technical Field

[0001] This utility model relates to the field of vehicle axle technology, specifically to a vehicle axle hydraulic circuit structure. Background Technology

[0002] Existing technology, such as Chinese patent CN209245230U, discloses an axle refueling structure, which includes a screw plug seat, a screw plug assembly, a plug assembly, and a retaining ring. The screw plug assembly includes a screw plug and a sealing ring. The screw plug has a through-hole external thread structure for connecting to the screw plug seat. A sealing groove is formed near the bottom of the screw plug, and the sealing ring is installed in the sealing groove for sealing the threaded structure. The plug assembly is installed in the through hole of the screw plug, and the bottom of the screw plug has a hexagonal structure. The plug assembly includes a plug cap and an O-ring. The plug cap has a groove structure, and an annular groove is formed on the outer surface of the plug cap. The O-ring is installed in the annular groove. The screw plug seat is installed on the rear cover of the axle housing, the retaining ring is inserted into the screw plug seat, and the screw plug assembly is screwed into the screw plug seat. The positive effects of this utility model are: it has the advantages of simple structure, light weight, and convenient installation, thus improving the overall vehicle assembly efficiency.

[0003] The above technical solution has the following disadvantages: it can only add oil to the axle housing and cannot introduce hydraulic oil into the differential housing. Utility Model Content

[0004] The purpose of this invention is to provide an axle hydraulic circuit structure that addresses the above problems by introducing hydraulic oil into the differential housing, making it convenient to install devices requiring hydraulic drive in the differential housing.

[0005] To achieve the above objectives, this utility model discloses an axle oil circuit structure, including an axle housing, in which a driven bevel gear, a first half-shaft bevel gear, and a second half-shaft bevel gear are installed. The first half-shaft bevel gear is connected to a first half-shaft, and the second half-shaft bevel gear is connected to a second half-shaft. It also includes a differential housing, in which the driven bevel gear is fixedly connected to the outside of the differential housing, and the first half-shaft bevel gear is rotatably connected to the inside of the differential housing. The differential housing has a toothed back sleeve that can be fitted onto the first half-shaft. A first oil port is located at the connection between the toothed back sleeve extending into the differential housing and the differential housing. A second oil port is provided on the side of the toothed back sleeve extending out of the differential housing. A first oil circuit is provided on the toothed back sleeve that connects the first oil port and the second oil port.

[0006] During use, hydraulic oil enters the differential housing through the second oil port, the first oil passage, and the first oil port, making it convenient to use.

[0007] Preferably, a sealing sleeve is placed between the axle housing and the tooth back sleeve, and a second oil passage is opened on the sealing sleeve corresponding to the second oil port. Two sealing rings are placed between the sealing sleeve and the tooth back sleeve, and the two sealing rings are located on both sides of the second oil port. A third oil passage is opened on the axle housing corresponding to the second oil passage.

[0008] During use, the hydraulic oil passes through the third oil passage, the second oil passage, the second oil port, the first oil passage, and the first oil port in sequence before entering the differential housing, making it convenient to use.

[0009] Preferably, a piston is slidably connected inside the differential housing, and the first oil port is located on the side of the piston near the back of the teeth. Hydraulic oil enters the differential housing through the first oil port and drives the piston to move hydraulically.

[0010] When in use, it facilitates the movement of the piston by hydraulic oil.

[0011] Preferably, the first oil port is positioned facing the piston.

[0012] When in use, it facilitates the movement of the piston by hydraulic oil.

[0013] Preferably, a number of double-sided friction plates or synchronous steel plates are installed on the driven bevel gear, and a number of synchronous steel plates or double-sided friction plates are correspondingly installed on the first half-shaft bevel gear. The number of double-sided friction plates and the number of synchronous steel plates are alternately arranged, and the piston is used to press the number of double-sided friction plates and the number of synchronous steel plates together.

[0014] Under normal driving conditions, several double-sided friction plates and several synchronized steel plates are in a separated state, and the differential allows the left and right wheels to freely differentiate speeds to meet cornering requirements. If a wheel slips or the vehicle is understeer, the piston presses the double-sided friction plates and synchronized steel plates together. When one wheel slips, the double-sided friction plates and synchronized steel plates are pressed together, and the driven bevel gear, the first half-shaft bevel gear, and the second half-shaft bevel gear engage as a whole. The limited-slip differential can quickly transfer driving force to the other wheel, distributing the entire power to both wheels, thereby improving the vehicle's ability to get out of trouble and its driving stability. This type of axle is particularly useful in muddy or uneven terrain and in agricultural operations.

[0015] Preferably, several double-sided friction plates or synchronous steel plates are located on the inner sidewall of the differential housing.

[0016] Under normal driving conditions, no hydraulic oil enters the differential housing through the first oil port. The piston is away from the double-sided friction plates and the synchronization steel plates, and the double-sided friction plates and synchronization steel plates are separated. The differential allows the left and right wheels to freely differential, meeting the needs of cornering. If the wheels are slipping or the vehicle is understeering, hydraulic oil enters the differential housing through the first oil port, hydraulically pushing the piston to move and pressing several double-sided friction plates and several synchronization steel plates together. This structure is simple and easy to use.

[0017] Preferably, the differential housing includes a back differential housing and a surface differential housing. A surface flange is connected to the surface differential housing. The connecting bolts pass through the back differential housing and the surface flange in sequence and are then threadedly connected to the driven bevel gear.

[0018] This structure facilitates the installation of the tooth back difference housing, tooth surface difference housing, and driven bevel gear.

[0019] In summary, the beneficial effects of this utility model are as follows: during use, hydraulic oil enters the differential housing after passing through the second oil port, the first oil circuit, and the first oil port, which facilitates the installation of devices requiring hydraulic drive in the differential housing. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a vehicle axle according to the present invention.

[0021] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.

[0022] Figure 3 yes Figure 2 A magnified structural diagram of part B in the middle.

[0023] Figure 4 This is a structural schematic diagram of a differential gear in a vehicle axle according to the present invention.

[0024] In the diagram: 1. First half-shaft; 2. Second half-shaft; 3. Drive shaft; 4. First half-shaft bevel gear; 5. Second half-shaft bevel gear; 6. Drive bevel gear; 7. Tooth back difference housing; 8. Tooth back sleeve; 9. Tooth back bearing; 10. Connecting bolt; 11. Tooth surface difference housing; 12. Tooth surface flange; 13. Driven bevel gear; 14. Planetary gear; 15. Planetary gear shaft; 16. Planetary gear support; 17. Locating pin; 18. Tooth surface sleeve; 19. Tooth surface bearing; 20. Second oil port; 21. First oil passage; 22. First oil port; 23. Piston; 24. Double-sided friction plate; 25. Synchronizing steel plate; 26. Second oil passage; 27. Third oil passage; 28. Sealing sleeve; 29. ​​Sealing ring; 30. Tooth back lock nut; 31. Tooth back bearing seat; 32. Tooth surface bearing seat; 33. Tooth surface lock nut; 34. Bridge housing. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Example 1, such as Figures 1 to 4 As shown, an axle hydraulic circuit structure includes an axle housing 34, within which a driven bevel gear 13, a first half-shaft bevel gear 4, and a second half-shaft bevel gear 5 are installed. The first half-shaft bevel gear 4 is connected to a first half-shaft 1, and the second half-shaft bevel gear 5 is connected to a second half-shaft 2. A driving bevel gear 6 meshes with the driven bevel gear 13 and is connected to a driving shaft 3. The axle housing also includes a differential housing. The driven bevel gear 13 is fixedly connected to the outside of the differential housing, and the first half-shaft bevel gear 4 is rotatably connected to the inside of the differential housing. The differential housing has a toothed back sleeve 8 that can be fitted onto the first half-shaft 1. A first oil port 22 is located at the connection point between the toothed back sleeve 8 extending into the differential housing and the differential housing. A second oil port 20 is provided on the side of the toothed back sleeve 8 extending out of the differential housing. A first oil passage 21 connecting the first oil port 22 and the second oil port 20 is provided on the toothed back sleeve 8. In operation, hydraulic oil enters the differential housing through the second oil port 20, the first oil passage 21, and the first oil port 22 for convenient use. A sealing sleeve 28 is placed between the axle housing 34 and the gear back sleeve 8. The sealing sleeve 28 has a second oil passage 26 corresponding to the second oil port 20. Two sealing rings 29 are placed between the sealing sleeve 28 and the gear back sleeve 8, located on both sides of the second oil port 20. A third oil passage 27 corresponding to the second oil passage 26 is provided on the axle housing 34. In operation, hydraulic oil enters the differential housing sequentially through the third oil passage 27, the second oil passage 26, the second oil port 20, the first oil passage 21, and the first oil port 22 for convenient use.

[0030] Specifically, a piston 23 is slidably connected inside the differential housing. A first oil port 22 is located on the side of the piston 23 near the back of the gear teeth. Hydraulic oil enters the differential housing through the first oil port 22, hydraulically driving the piston 23. The first oil port 22 is oriented towards the piston 23 for easy hydraulic oil movement during use. Several double-sided friction plates 24 or synchronous steel plates 25 are mounted on the driven bevel gear 13, and several synchronous steel plates 25 or double-sided friction plates 24 are correspondingly mounted on the first half-shaft bevel gear 4. The double-sided friction plates 24 and synchronous steel plates 25 are alternately arranged, and the piston 23 presses the double-sided friction plates 24 and synchronous steel plates 25 together. Under normal driving conditions, the double-sided friction plates 24 and synchronous steel plates 25 are separated, allowing the left and right wheels to freely differential, meeting turning requirements. If the wheels slip or the vehicle is understeer, the piston 23 presses the double-sided friction plates 24 and synchronous steel plates 25 together. When one wheel slips, several double-sided friction plates 24 and several synchronous steel plates 25 are pressed together, and the driven bevel gear 13, the first half-shaft bevel gear 4 and the second half-shaft bevel gear 5 are combined into a whole. The limited-slip differential can quickly transfer the driving force to the other wheel, so that the entire power is distributed to both wheels, thereby improving the vehicle's ability to get out of trouble and driving stability. This type of axle is especially useful in muddy or uneven terrain and in farmland operations.

[0031] Specifically, several double-sided friction plates 24 or synchronized steel plates 25 are located on the inner wall of the differential housing. The drive structure includes a first oil port 22 located on the side of the piston 23 away from the double-sided friction plates 24 or synchronized steel plates 25. Hydraulic oil enters the differential housing through the first oil port 22, hydraulically driving the piston 23 to move. Under normal driving conditions, no hydraulic oil enters the differential housing through the first oil port 22, the piston 23 is away from the double-sided friction plates 24 and synchronized steel plates 25, and the double-sided friction plates 24 and synchronized steel plates 25 are separated. The differential allows the left and right wheels to freely differential, meeting the turning requirements. If the wheels are slipping or the vehicle is understeer, hydraulic oil enters the differential housing through the first oil port 22, hydraulically driving the piston 23 to move, pressing the double-sided friction plates 24 and synchronized steel plates 25 together. This structure is simple and easy to use. The differential housing includes a back-tooth differential housing 7 and a front-tooth differential housing 11. A front-tooth flange 12 is connected to the front-tooth differential housing 11. Connecting bolts 10 pass through the back-tooth differential housing 7 and the front-tooth flange 12 in sequence and are threadedly connected to the driven bevel gear 13. This structure facilitates the installation of the back-tooth differential housing 7, the front-tooth differential housing 11, and the driven bevel gear 13. A planetary gear shaft 15 is mounted on the front-tooth differential housing 11, and a planetary gear 14 is mounted on the planetary gear shaft 15. The first half-shaft bevel gear 4 and the second half-shaft bevel gear 5 both mesh with the planetary gear 14. Specifically, a planetary gear bracket 16 is connected to the front-tooth differential housing 11, and a locating pin 17 for fixing the planetary gear shaft 15 is mounted on the planetary gear bracket 16. Under normal driving conditions, the piston 23 is away from the double-sided friction plate 24 and the synchronizing steel plate 25. With the double-sided friction plate 24 and the synchronizing steel plate 25 separated, the differential allows the left and right wheels to freely differential, meeting the turning requirements.

[0032] Specifically, a tooth surface sleeve 18, which can be fitted onto the second half-shaft 2, is connected to the tooth surface differential housing 11. A tooth back bearing seat 31 is installed inside the back differential housing 7, and a tooth back bearing 9 is installed between the tooth back sleeve 8 and the tooth back bearing seat 31. A tooth surface bearing seat 32 is installed inside the tooth surface differential housing 11, and a tooth surface bearing 19 is installed between the tooth surface sleeve 18 and the tooth surface bearing seat 32. A tooth back locking nut 30 is connected to the end of the back differential housing 7, and a tooth surface locking nut 33 is connected to the end of the tooth surface differential housing 11. This structure facilitates the installation between the differential housing and the bridge housing 34.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A vehicle axle hydraulic circuit structure, comprising an axle housing (34), wherein a driven bevel gear (13), a first half-shaft bevel gear (4), and a second half-shaft bevel gear (5) are installed within the axle housing (34), the first half-shaft bevel gear (4) is connected to a first half-shaft (1), and the second half-shaft bevel gear (5) is connected to a second half-shaft (2), characterized in that, It also includes a differential housing, a driven bevel gear (13) is fixedly connected to the outside of the differential housing, and a first half-shaft bevel gear (4) is rotatably connected to the inside of the differential housing. The differential housing has a tooth back sleeve (8) that can be sleeved on the first half-shaft (1). The first oil port (22) is located at the connection between the tooth back sleeve (8) extending into the side of the differential housing and the differential housing. A second oil port (20) is opened on the side of the tooth back sleeve (8) extending out of the differential housing. A first oil passage (21) connecting the first oil port (22) and the second oil port (20) is opened on the tooth back sleeve (8).

2. The axle oil passage structure according to claim 1, characterized by A sealing sleeve (28) is placed between the bridge housing (34) and the tooth back sleeve (8). A second oil passage (26) corresponding to the second oil port (20) is opened on the sealing sleeve (28). Two sealing rings (29) are placed between the sealing sleeve (28) and the tooth back sleeve (8). The two sealing rings (29) are located on both sides of the second oil port (20). A third oil passage (27) corresponding to the second oil passage (26) is opened on the bridge housing (34).

3. The axle oil passage structure according to claim 2, characterized in that, A piston (23) is slidably connected inside the differential housing. The first oil port (22) is located on the side of the piston (23) near the back of the teeth. Hydraulic oil enters the differential housing through the first oil port (22) and drives the piston (23) to move by hydraulic pressure.

4. The axle oil passage structure according to claim 3, characterized in that, The first oil port (22) is positioned facing the piston (23).

5. The axle oil passage structure according to claim 3, characterized in that, A number of double-sided friction plates (24) or synchronous steel plates (25) are installed on the driven bevel gear (13), and a number of synchronous steel plates (25) or double-sided friction plates (24) are correspondingly installed on the first half-shaft bevel gear (4). The number of double-sided friction plates (24) and the number of synchronous steel plates (25) are alternately arranged, and the piston (23) is used to press the number of double-sided friction plates (24) and the number of synchronous steel plates (25) together.

6. The axle oil passage structure according to claim 5, characterized in that, Several double-sided friction plates (24) or synchronous steel plates (25) are located on the inner sidewall of the differential shell.

7. The axle oil circuit structure according to any one of claims 1 to 6, characterized by The differential housing includes a back differential housing (7) and a surface differential housing (11). A surface flange (12) is connected to the surface differential housing (11). The connecting bolt (10) passes through the back differential housing (7) and the surface flange (12) in sequence and is threaded to the driven bevel gear (13).

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