Axle with limited slip differential and using method thereof

Abstract

The invention discloses an axle with a limited slip differential and a using method thereof.The axle 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, and a plurality of double-face friction plates or synchronous steel sheets are installed on the driven bevel gear; a plurality of synchronous steel sheets or double-sided friction sheets are correspondingly mounted on the first half-shaft bevel gear, the plurality of double-sided friction sheets and the plurality of synchronous steel sheets are alternately arranged, and a pressing device for pressing the plurality of double-sided friction sheets and the plurality of synchronous steel sheets together is further included. The method comprises the following steps that whether wheels are in a slipping state or a vehicle is in an understeering state or not is judged, and if the wheels are in the slipping state or the vehicle is in the understeering state, a processing unit controls a pressing device to press a plurality of double-sided friction plates and a plurality of synchronous steel sheets together. The axle is particularly useful in muddy or uneven terrain and farmland operation.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle axles, and in particular to a vehicle axle with a limited slip differential and a use method thereof. Background Art

[0002] Existing axles, such as Chinese patent CN2640782Y, disclose a tractor integral front drive axle mainly composed of central transmission, differential, housing, constant velocity universal joint and final transmission. The central transmission includes a pair of bevel gears, the differential includes left and right half-shaft gears and two planetary gears, and the final transmission consists of a single-stage planetary mechanism. The power is transmitted to the front axle by the bevel gear of the central transmission, and then transmitted to the final transmission sun gear through the differential and universal transmission shaft, and then transmitted to the wheel hub through the planetary mechanism to achieve power transmission, with a simple power transmission route and high transmission efficiency.

[0003] The above technical solution has the following disadvantages: insufficient passability and stability in complex terrain. In order to solve the problem of insufficient passability and stability of ordinary front axles in complex terrain, front axles with limited slip differentials came into being. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle axle with a limited slip differential and a method of using the same in order to limit the speed difference between the wheels on both sides, thereby improving the stability and driving force distribution of the tractor when turning or when one side of the wheel slips.

[0005] To achieve the above-mentioned purpose, the present invention discloses an axle with a limited slip differential, including a bridge 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 the first half-shaft, the second half-shaft bevel gear is connected to the second half-shaft, a plurality of double-sided friction plates or synchronous steel plates are installed on the driven bevel gear, a plurality of synchronous steel plates or double-sided friction plates are correspondingly installed on the first half-shaft bevel gear, the plurality of double-sided friction plates and the plurality of synchronous steel plates are alternately arranged, and also includes a clamping device for pressing the plurality of double-sided friction plates and the plurality of synchronous steel plates together.

[0006] In normal driving state, several double-sided friction plates and several synchronous steel plates are in a separated state, and the differential allows the left and right wheels to freely differentiate to meet the turning requirements. If the wheel is in a slipping state or the vehicle is in an understeering state, the clamping device presses several double-sided friction plates and several synchronous steel plates together. When one side of the wheel slips, several double-sided friction plates and several synchronous steel plates are pressed together, and the driven bevel gear, the first half-shaft bevel gear and the second half-shaft bevel gear are combined into a whole. The limited slip differential can quickly transfer the driving force to the wheel on the other side, so that the entire power is distributed to the wheels on both sides, thereby improving the vehicle's ability to escape from difficulties and driving stability. This axle is particularly useful in muddy or uneven terrain and farmland operations.

[0007] Preferably, the pressing device includes a piston and a driving structure for driving the piston.

[0008] In the normal driving state, the piston is away from the double-sided friction plate and the synchronizing steel plate, and the double-sided friction plate and the synchronizing steel plate are in a separated state. The differential allows the left and right wheels to freely differential, meeting the turning requirements. If the wheels are in a slipping state or the vehicle is in an understeering state, the piston presses several double-sided friction plates and several synchronizing steel plates together. This structure is simple and convenient to use.

[0009] Preferably, it further includes a differential case. The driven bevel gear is installed on the outer side of the differential case in a fixed connection manner, and the first half-shaft bevel gear is installed inside the differential case in a rotatable connection manner. Several double-sided friction plates or synchronizing steel plates are located on the inner side wall of the differential case; the driving structure includes a first oil port on the side of the piston away from the double-sided friction plate or the synchronizing steel plate. Hydraulic oil enters the differential case through the first oil port, and the piston is pushed to move through the hydraulic pressure.

[0010] In the normal driving state, no hydraulic oil enters the differential case through the first oil port. The piston is away from the double-sided friction plate and the synchronizing steel plate, and the double-sided friction plate and the synchronizing steel plate are in a separated state. The differential allows the left and right wheels to freely differential, meeting the turning requirements. If the wheels are in a slipping state or the vehicle is in an understeering state, the hydraulic oil enters the differential case through the first oil port, and the piston is pushed to move through the hydraulic pressure, pressing several double-sided friction plates and several synchronizing steel plates together. This structure is simple and convenient to use.

[0011] Alternatively, the driving structure includes an electromagnet on the side of the piston away from the double-sided friction plate or the synchronizing steel plate. A permanent magnet is installed on the piston. When the electromagnet is energized, the piston is pushed to move by the magnetic force.

[0012] In the normal driving state, the electromagnet is not activated. The piston is away from the double-sided friction plate and the synchronizing steel plate, and the double-sided friction plate and the synchronizing steel plate are in a separated state. The differential allows the left and right wheels to freely differential, meeting the turning requirements. If the wheels are in a slipping state or the vehicle is in an understeering state, the electromagnet is activated, and the piston is pushed to move by the magnetic force, pressing several double-sided friction plates and several synchronizing steel plates together. This structure is simple and convenient to use.

[0013] Preferably, the differential case has a tooth-back sleeve that can be sleeved on the first half-shaft. The first oil port is located at the connection between the side of the end of the tooth-back sleeve extending into the differential case and the differential case. A second oil port is opened on the side of the end of the tooth-back sleeve extending out of the differential case. A first oil passage communicating the first oil port and the second oil port is opened on the tooth-back sleeve; a sealing sleeve is placed between the axle housing and the tooth-back sleeve. A second oil passage corresponding to the second oil port is opened on the sealing sleeve. Two sealing rings are placed between the sealing sleeve and the tooth-back sleeve, and the two sealing rings are respectively located on both sides of the second oil port. A third oil passage corresponding to the second oil passage is opened on the axle housing.

[0014] When in use, the hydraulic oil enters the differential housing after passing through the third oil circuit, the second oil circuit, the second oil port, the first oil circuit and the first oil port in sequence, which is convenient for use.

[0015] Preferably, the first oil port is arranged toward the piston.

[0016] When in use, the hydraulic oil facilitates the movement of the piston.

[0017] Preferably, the differential housing includes a tooth back difference housing and a tooth surface difference housing, the tooth surface difference housing is connected with a tooth surface flange, and the connecting bolts pass through the tooth back difference housing and the tooth surface flange in sequence and are 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] Preferably, a planetary gear shaft is mounted on the tooth surface difference housing, a planetary gear is mounted on the planetary gear shaft, and the first half-shaft bevel gear and the second half-shaft bevel gear are both meshed with the planetary gear.

[0020] In normal driving state, the piston is away from the double-sided friction plate and the synchronous steel plate, and the double-sided friction plate and the synchronous steel plate are separated. The differential allows the left and right wheels to freely differentiate to meet the turning requirements.

[0021] Preferably, the tooth surface difference housing is connected with a tooth surface sleeve which can be sleeved on the second half shaft.

[0022] This structure facilitates the installation between the differential housing and the axle housing.

[0023] A method for using the axle with limited slip differential as described above comprises the following steps: Step S1, the processing unit receives the signal from the acquisition unit and determines whether the wheel is in a slipping state or whether the vehicle is in an understeering state; Step S2: If the wheel is in a slipping state or the vehicle is in an understeering state, the processing unit controls the clamping device to press a plurality of double-sided friction plates and a plurality of synchronous steel plates together.

[0024] When one side of the wheel slips, several double-sided friction plates and several synchronous steel plates are pressed together, and the driven bevel gear, the first half-shaft bevel gear and the second half-shaft bevel gear are combined into a whole. The limited slip differential can quickly transfer the driving force to the wheel on the other side, so that the entire power is distributed to the wheels on both sides, thereby improving the vehicle's ability to escape from difficulties and driving stability. This axle is particularly useful in muddy or uneven terrain and in farmland operations.

[0025] Preferably, in step S1, when a wheel speed With reference speed When the difference between the two is ≥ the preset value, the wheel is considered to be in a slipping state; when the vehicle angular velocity The difference from the reference angular velocity is greater than or equal to a preset value, it is considered that the vehicle is in an understeer state; In step S2, the frictional force between several double-sided friction plates and several synchronizing steel plates is calculated by the formula: Or, ; wherein, is the value of the frictional force after several double-sided friction plates and several synchronizing steel plates are fully compressed.

[0026] The processing unit continuously adjusts the hydraulic pressure according to the real-time road conditions to achieve stepless adjustment from fully open to highly locked. The frictional force between the friction plates increases, restricting the rotational speed difference inside the differential. The higher the pressure, the greater the locking rate, and the torque distribution biases towards the wheel with higher adhesion.

[0027] In summary, the beneficial effects of the present invention are as follows: BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of an axle with a limited-slip differential according to the present invention.

[0029] Figure 2 is Figure 1 an enlarged structural diagram of a partial area A in

[0030] Figure 3 is Figure 2 an enlarged structural diagram of a partial area B in

[0031] Figure 4 is a schematic structural diagram of a differential in an axle with a limited-slip differential according to the present invention.

[0032] In the figure: 1, the first half shaft; 2, the second half shaft; 3, the drive shaft; 4, the first half shaft bevel gear; 5, the second half shaft bevel gear; 6, the drive bevel gear; 7, the back gear housing; 8, the back gear sleeve; 9, the back gear bearing; 10, the connecting bolt; 11, the face gear housing; 12, the face gear flange; 13, the driven bevel gear; 14, the planetary gear; 15, the planetary gear shaft; 16, the planetary gear carrier; 17, the positioning pin; 18, the face gear sleeve; 19, the face gear bearing; 20, the second oil port; 21, the first oil passage; 22, the first oil port; 23, the piston; 24, the double-sided friction plate; 25, the synchronizing steel plate; 26, the second oil passage; 27, the third oil passage; 28, the sealing sleeve; 29, the sealing ring; 30, the back gear lock nut; 31, the back gear bearing seat; 32, the face gear bearing seat; 33, the face gear lock nut; 34, the axle housing. DETAILED DESCRIPTION OF THE INVENTION

[0033] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0035] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] Embodiment 1, as Figures 1 to 4As shown, a vehicle axle with a limited slip differential includes a bridge housing 34, in 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 the first half-shaft 1, the second half-shaft bevel gear 5 is connected to the second half-shaft 2, the driving bevel gear 6 is meshed with the driven bevel gear 13, and the driving bevel gear 6 is connected to the driving shaft 3. A plurality of double-sided friction plates 24 or synchronous steel plates 25 are installed on the driven bevel gear 13, and a plurality of synchronous steel plates 25 or double-sided friction plates 24 are correspondingly installed on the first half-shaft bevel gear 4. The plurality of double-sided friction plates 24 and the plurality of synchronous steel plates 25 are alternately arranged, and a clamping device for pressing the plurality of double-sided friction plates 24 and the plurality of synchronous steel plates 25 together is also included. In the normal driving state, the plurality of double-sided friction plates 24 and the plurality of synchronous steel plates 25 are in a separated state, and the differential allows the left and right wheels to freely differential to meet the turning requirements. If the wheel is in a slipping state or the vehicle is in an understeering state, the clamping device presses together the double-sided friction plates 24 and the synchronous steel plates 25. When one side of the wheel slips, the double-sided friction plates 24 and the 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 wheel on the other side, so that the entire power is distributed to the wheels on both sides, thereby improving the vehicle's ability to escape from difficulties and driving stability. This axle is particularly useful in muddy or uneven terrain and farmland operations.

[0038] Specifically, the pressing device includes a piston 23 and a driving structure for driving the piston 23. In the normal driving state, the piston 23 is away from the double-sided friction plate 24 and the synchronizing steel plate 25, and the double-sided friction plate 24 and the synchronizing steel plate 25 are in a separated state. The differential allows the left and right wheels to freely differential, meeting the turning requirements. If the wheels are in a slipping state or the vehicle is in an understeering state, the piston 23 presses a plurality of double-sided friction plates 24 and a plurality of synchronizing steel plates 25 together. This structure is simple and convenient to use. It also includes a differential case. The driven bevel gear 13 is installed on the outside of the differential case in a fixed connection manner, and the first half-shaft bevel gear 4 is installed inside the differential case in a rotatable connection manner. A plurality of double-sided friction plates 24 or synchronizing steel plates 25 are located on the inner side wall of the differential case; the driving structure includes a first oil port 22 on the side of the piston 23 away from the double-sided friction plate 24 or the synchronizing steel plate 25. Hydraulic oil enters the differential case through the first oil port 22, and the piston 23 is pushed to move by the hydraulic pressure. In the normal driving state, no hydraulic oil enters the differential case through the first oil port 22, the piston 23 is away from the double-sided friction plate 24 and the synchronizing steel plate 25, and the double-sided friction plate 24 and the synchronizing steel plate 25 are in a separated state. The differential allows the left and right wheels to freely differential, meeting the turning requirements. If the wheels are in a slipping state or the vehicle is in an understeering state, the hydraulic oil enters the differential case through the first oil port 22, and the piston 23 is pushed to move by the hydraulic pressure, pressing a plurality of double-sided friction plates 24 and a plurality of synchronizing steel plates 25 together. This structure is simple and convenient to use. In another embodiment, the driving structure includes an electromagnet on the side of the piston 23 away from the double-sided friction plate 24 or the synchronizing steel plate 25. A permanent magnet is installed on the piston 23. When the electromagnet is energized, the piston 23 is pushed to move by the magnetic force. In the normal driving state, the electromagnet is not activated, the piston 23 is away from the double-sided friction plate 24 and the synchronizing steel plate 25, and the double-sided friction plate 24 and the synchronizing steel plate 25 are in a separated state. The differential allows the left and right wheels to freely differential, meeting the turning requirements. If the wheels are in a slipping state or the vehicle is in an understeering state, the electromagnet is activated, and the piston 23 is pushed to move by the magnetic force, pressing a plurality of double-sided friction plates 24 and a plurality of synchronizing steel plates 25 together. This structure is simple and convenient to use.

[0039] Specifically, a tooth back sleeve 8 capable of being sleeved on the first half shaft 1 is provided on the differential case. The first oil port 22 is located at the connection between the side of the end of the tooth back sleeve 8 extending into the differential case and the differential case. A second oil port 20 is provided on the side of the end of the tooth back sleeve 8 extending out of the differential case. A first oil passage 21 communicating the first oil port 22 and the second oil port 20 is provided on the tooth back sleeve 8. A sealing sleeve 28 is placed between the axle housing 34 and the tooth back sleeve 8. A second oil passage 26 corresponding to the second oil port 20 is provided 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 respectively 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. During use, the hydraulic oil enters the differential case after passing 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 in sequence, which is convenient for use. The first oil port 22 is arranged facing the piston 23. During use, it is convenient for the hydraulic oil to push the piston 23 to move.

[0040] Specifically, the differential case includes a tooth back differential case body 7 and a tooth face differential case body 11. A tooth face flange 12 is connected to the tooth face differential case body 11. The connecting bolts 10 sequentially pass through the tooth back differential case body 7 and the tooth face flange 12 and are then threadedly connected to the driven bevel gear 13. This structure facilitates the installation of the tooth back differential case body 7, the tooth face differential case body 11 and the driven bevel gear 13. A planetary gear shaft 15 is installed on the tooth face differential case body 11. A planetary gear 14 is installed on the planetary gear shaft 15. Both the first half shaft bevel gear 4 and the second half shaft bevel gear 5 are meshed with the planetary gear 14. Specifically, a planetary gear support 16 is connected to the tooth face differential case body 11. A positioning pin 17 for fixing the planetary gear shaft 15 is installed on the planetary gear support 16. In the normal driving state, the piston 23 is away from the double-sided friction plate 24 and the synchronizing steel sheet 25, and the double-sided friction plate 24 and the synchronizing steel sheet 25 are in a separated state. The differential allows the left and right wheels to freely differential, meeting the turning requirements. A tooth face sleeve 18 capable of being sleeved on the second half shaft 2 is connected to the tooth face differential case body 11. A tooth back bearing seat 31 is installed in the tooth back differential case body 7. A tooth back bearing 9 is installed between the tooth back sleeve 8 and the tooth back bearing seat 31. A tooth face bearing seat 32 is installed in the tooth face differential case body 11. A tooth face bearing 19 is installed between the tooth face sleeve 18 and the tooth face bearing seat 32. A tooth back locking nut 30 is connected to the end of the tooth back differential case body 7. A tooth face locking nut 33 is connected to the end of the tooth face differential case body 11. This structure facilitates the installation between the differential case and the axle housing 34.

[0041] A method for using a limited-slip differential axle as described in Embodiment 1 includes the following steps: Step S1, the processing unit receives the signal from the acquisition unit and determines whether the wheel is in a slipping state or the vehicle is in an understeering state; Step S2, if the wheel is in a slipping state or the vehicle is in an understeering state, the processing unit controls the clamping device to press the plurality of double-sided friction plates 24 and the plurality of synchronous steel plates 25 together.

[0042] When one side of the wheel slips, a number of double-sided friction plates 24 and a number of 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 wheel on the other side, so that the entire power is distributed to the wheels on both sides, thereby improving the vehicle's ability to escape from difficulties and driving stability. This axle is particularly useful in muddy or uneven terrain and in farmland operations.

[0043] Specifically, in step S1, when a wheel speed With reference speed When the difference between the two is ≥ the preset value, the wheel is considered to be in a slipping state; when the vehicle angular velocity With reference angular velocity When the difference between the two is ≥ the preset value, the vehicle is considered to be in an understeering state; In step S2, the friction between the double-sided friction plates 24 and the synchronous steel plates 25 is The calculation formula is: ; or, ; in, It is the value of the friction force after the double-sided friction plates 24 and the synchronous steel plates 25 are completely pressed together.

[0044] The processing unit continuously adjusts the hydraulic pressure according to the real-time road conditions to achieve stepless adjustment from full opening to high locking. The friction between the friction plates increases, limiting the speed difference inside the differential. The higher the pressure, the greater the locking rate, and the torque distribution is biased towards the wheel with high adhesion.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A vehicle axle with a limited slip differential, comprising a bridge housing (34), a driven bevel gear (13), a first half-shaft bevel gear (4) and a second half-shaft bevel gear (5) being installed in the bridge housing (34), the first half-shaft bevel gear (4) being connected to a first half-shaft (1), and the second half-shaft bevel gear (5) being connected to a second half-shaft (2), characterized in that: A plurality of double-sided friction plates (24) or synchronous steel plates (25) are mounted on the driven bevel gear (13), and a plurality of synchronous steel plates (25) or double-sided friction plates (24) are correspondingly mounted on the first half-shaft bevel gear (4). The plurality of double-sided friction plates (24) and the plurality of synchronous steel plates (25) are alternately arranged, and a pressing device for pressing the plurality of double-sided friction plates (24) and the plurality of synchronous steel plates (25) together is also included.

2. The axle with limited slip differential according to claim 1, characterized in that: The pressing device comprises a piston (23) and a driving structure for driving the piston (23).

3. The axle with limited slip differential according to claim 2, characterized in that: The invention also includes a differential housing, wherein the driven bevel gear (13) is fixedly mounted on the outside of the differential housing, the first half-shaft bevel gear (4) is rotatably mounted inside the differential housing, and a plurality of double-sided friction plates (24) or synchronous steel plates (25) are located on the inner wall of the differential housing; the driving structure includes a first oil port (22) located on the side of the piston (23) away from the double-sided friction plates (24) or synchronous steel plates (25), and hydraulic oil enters the differential housing through the first oil port (22), and the piston (23) is pushed to move by hydraulic pressure; or the driving structure includes an electromagnet located on the side of the piston (23) away from the double-sided friction plates (24) or synchronous steel plates (25), and a permanent magnet is mounted on the piston (23). When the electromagnet is energized, the piston (23) is pushed to move by magnetic force.

4. The axle with limited slip differential according to claim 3, characterized in that: The differential case 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 side of the tooth back sleeve (8) extending into the differential case and the differential case; the side of the tooth back sleeve (8) extending out of the differential case has a second oil port (20); and the tooth back sleeve (8) has a first oil passage (21) that connects the first oil port (22) and the second oil port (20); 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 respectively located on both sides of the second oil port (20); and a third oil passage (27) corresponding to the second oil passage (26) is opened on the bridge housing (34).

5. The axle with limited slip differential according to claim 4, characterized in that: The first oil port (22) is arranged toward the piston (23).

6. The axle with limited slip differential as claimed in claim 3, characterized in that: The differential housing comprises a tooth back difference housing (7) and a tooth face difference housing (11), the tooth face difference housing (11) being connected to a tooth face flange (12), and the connecting bolt (10) passing through the tooth back difference housing (7) and the tooth face flange (12) in sequence and then being threadedly connected to the driven bevel gear (13).

7. The axle with limited slip differential according to claim 6, characterized in that: A planetary gear shaft (15) is mounted on the tooth surface difference housing (11), a planetary gear (14) is mounted on the planetary gear shaft (15), and the first half-shaft bevel gear (4) and the second half-shaft bevel gear (5) are both meshed with the planetary gear (14).

8. The axle with limited slip differential according to claim 6, characterized in that: The tooth surface difference housing (11) is connected to a tooth surface sleeve (18) which can be sleeved on the second half shaft (2).

9. A method for using the axle with limited slip differential as claimed in claim 1, characterized in that: The following steps are involved: Step S1, the processing unit receives the signal from the acquisition unit and determines whether the wheel is in a slipping state or whether the vehicle is in an understeering state; Step S2: If the wheel is in a slipping state or the vehicle is in an understeering state, the processing unit controls the pressing device to press a plurality of double-sided friction plates (24) and a plurality of synchronous steel plates (25) together.

10. The method for using the axle with limited slip differential as claimed in claim 9, characterized in that: In step S1, when a wheel speed With reference speed When the difference between the two is ≥ the preset value, the wheel is considered to be in a slipping state; when the vehicle angular velocity With reference angular velocity When the difference between the two is ≥ the preset value, the vehicle is considered to be in an understeering state; In step S2, the friction between the plurality of double-sided friction plates (24) and the plurality of synchronous steel plates (25) is The calculation formula is: ； or, ； in, It is the value of the friction force after the double-sided friction plates (24) and the synchronous steel plates (25) are completely pressed together.

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