Axle pushing differential lock and differential mechanism

Abstract

The invention discloses an axle-pushing differential lock and a differential mechanism, and relates to the field of vehicle assembly parts, the axle-pushing differential lock comprises a locking assembly, the locking assembly comprises a locking seat unit arranged between two half axle gears in the differential mechanism, and one side of the locking seat unit is provided with a locking seat unit with one end used for extending out of a differential mechanism shell and the other end used for extending out of the differential mechanism shell; the other end of the pushing shaft abuts against the locking seat unit so as to push the locking seat unit to move and enable the locking seat unit to be meshed with one half shaft gear, and an elastic reset unit is arranged on the other side of the locking seat unit; the thrust assembly comprises a pushing cam used for being arranged on the periphery of one end of the differential mechanism shell in a sleeving mode, one end face of the pushing cam is provided with a corrugated surface abutting against the end, extending out of the differential mechanism shell, of the pushing shaft, and the corrugated surface is provided with protruding parts and downward concave parts which are arranged in a staggered mode. The inner ring of the pushing cam is provided with an electromagnetic ring used for controlling the autorotation state of the pushing cam, the differential mechanism can be locked, and the structure of the differential mechanism does not need to be changed in a large area during refitting.

Description

Technical Field

[0001] The invention relates to the field of vehicle assembly parts, and in particular to an axle-push differential lock and a differential. Background Art

[0002] The differential can make the two output shafts (i.e. the left and right half shafts) rotate at different angular velocities to adapt to the different speed requirements of the wheels when the car is driving in a straight line and turning. It is generally composed of left and right half shaft gears, two planetary gears and a gear carrier (planetary wheel carrier, differential case). When the car is driving in a straight line, the speeds of the left and right wheels are almost the same. The planetary gears in the differential mainly revolve and do not rotate on their own. When the car turns, the planetary gears rotate on their own while revolving, which increases the speed of the half shaft gears on one side and reduces the speed of the half shaft gears on the other side, thereby achieving the rotation of the wheels on both sides at different speeds.

[0003] When driving on a good road, its performance can fully meet the vehicle driving requirements. However, when the vehicle is driving on a poor road, especially on ice, snow, mud, wetness, gravel, and rugged roads, there will be a big difference in the adhesion of the wheels on both sides. Often the side with less adhesion will slip and spin, causing the vehicle to be unable to drive or even to spin out of control, posing a safety hazard. Differentials with locking structures are generally only equipped on high-end models, and the existing differentials of mid- and low-end models cannot be retrofitted with the existing differential structure and can only be replaced as a whole, causing unnecessary waste. Summary of the invention

[0004] The present application provides an axle-push differential lock and a differential, which can solve the technical problem in the prior art that when a vehicle is traveling on a bad road, there will be a big difference in the adhesion of the wheels on both sides, causing a safety hazard. At the same time, low- and mid-end models cannot be equipped with a locking structure according to the existing differential structure and can only be replaced as a whole, causing unnecessary waste.

[0005] In a first aspect, an embodiment of the present application provides a shaft-push differential lock, comprising:

[0006] A locking assembly, the locking assembly comprising a locking seat unit for being arranged between two half-shaft gears in the differential, one side of the locking seat unit is provided with a driving shaft having one end for extending out of the differential housing and the other end abutting against the locking seat unit to push the locking seat unit to move and make the locking seat unit mesh with one of the half-shaft gears, and the other side of the locking seat unit is provided with an elastic reset unit;

[0007] A thrust assembly, the thrust assembly comprising a pushing cam for sleeved on the outer periphery of one end of a differential housing, one end face of the pushing cam being provided with a corrugated surface for abutting against the end of the pushing shaft extending out of the differential housing, the corrugated surface having staggered protrusions and recesses, the inner ring of the pushing cam being provided with an electromagnetic ring for controlling the rotation state of the pushing cam.

[0008] In combination with the first aspect, in one embodiment, the locking seat unit includes a fixed base, one end surface of the fixed base is provided with an engaging protrusion, and the outer periphery of the engaging protrusion is provided with a toothed surface.

[0009] In one embodiment, a displacement long axis is provided on a side of the fixed base away from the engaging protrusion, and the displacement long axis passes through the fixed base.

[0010] In one embodiment, two ends of a side surface of the displacement major axis away from the engaging protrusion are respectively provided with fixing grooves corresponding to the position of the driving shaft.

[0011] In one embodiment, one end of the driving shaft is held in the fixing groove, and the other end is used to extend laterally out of the differential housing.

[0012] In one embodiment, the elastic reset unit includes a reset spring, one end of which is pressed against a side of the displacement major axis away from the driving shaft, and the other end of which is used to be embedded in the differential housing.

[0013] In one embodiment, a planetary gear connection unit is further provided on the fixed base, and the planetary gear connection unit includes two fixed short shafts arranged at intervals, and the fixed short shafts are arranged perpendicular to the displacement long axis.

[0014] In one embodiment, one end of the fixed stub shaft is disposed in the fixed base, and the other end horizontally extends out of the fixed base and is used to connect to the planetary gear in the differential.

[0015] In the second aspect, an embodiment of the present application provides a differential, which includes a first shell and a second shell that cover each other, and the differential also includes the above-mentioned shaft-push differential lock, the pushing cam is sleeved outside the first shell and one end of the pushing shaft extends out of the first shell, and one end of the elastic reset unit is embedded in the second shell.

[0016] In combination with the second aspect, in one implementation, the outer periphery of the differential is provided with a main reduction gear for driving the differential to rotate.

[0017] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0018] 1. The shaft-push differential lock in the present application can utilize the rotation of the differential to drive the push shaft to perform lateral reciprocating motion by setting a locking seat unit and a push shaft, in conjunction with a push cam with a corrugated surface and an electromagnetic coil that controls the rotation state of the push cam, so as to achieve the locking and unlocking of the differential. When the vehicle is driving on a complex road, the current speed of the vehicle can be locked, reducing abnormal conditions such as vehicle slipping and idling, thereby improving the driving safety performance of the vehicle;

[0019] 2. The locking seat unit in the axle-push differential lock in the present application is assembled between the two original half-axle gears of the differential, and the pushing cam and the electromagnetic ring are arranged on the outer end of the original housing of the differential, which can be adapted to most types of differentials. When modifying a differential without a locking function, the structure of the original differential can be directly installed without replacing large-scale accessories, which can avoid unnecessary waste and save capital investment;

[0020] 3. The axle-push differential lock in this application is easy to install, does not require complicated debugging work, and has high installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A cross-sectional schematic diagram of an axle-push differential lock provided in an embodiment of the present application;

[0023] Figure 2 An exploded diagram of an axle-push differential lock structure provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of a locking assembly in a thrust differential lock provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of a differential structure provided in an embodiment of the present application.

[0026] In the figure: 1. Locking seat unit; 101. Fixed base; 102. Engaging protrusion; 103. Tooth surface; 104. Displacement major axis; 105. Fixed groove; 106. Short axis engaging groove; 2. Pushing shaft; 3. Elastic reset unit; 301. Reset spring; 4. Pushing cam; 401. Corrugated surface; 5. Electromagnetic coil; 6. Fixed short axis; 7. Planetary gear; 8. Half-axle gear; 9. First housing; 10. Second housing; 11. Main reduction gear. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] On the first aspect, an embodiment of the present application provides an axle-push differential lock, which can solve the technical problem in the prior art that when a vehicle is traveling on a bad road, there will be a big difference in the adhesion of the wheels on both sides, causing a safety hazard. At the same time, mid- and low-end models cannot be equipped with a locking structure according to the existing differential structure and can only be replaced as a whole, causing unnecessary waste.

[0029] The thrust differential lock in the present application includes a locking assembly and a thrust assembly. The locking assembly is directly installed in the gap between the two half-shaft gears 8 in the differential, and there is no need to modify the internal structure of the original differential. The locking assembly can be laterally displaced between the two half-shaft gears 8, and after displacing a certain distance, it engages with one of the half-shaft gears 8 to lock. The thrust assembly is also directly installed outside the differential housing, and the thrust assembly can rely on the rotation of the differential to push the locking assembly to move for locking.

[0030] Specifically, Figure 1 A cross-sectional schematic diagram of an axle-push differential lock provided in an embodiment of the present application, Figure 2 An exploded diagram of an axle-push differential lock structure provided in an embodiment of the present application is shown in FIG. Figure 1 , Figure 2 As shown, the locking assembly includes a locking seat unit 1 for being arranged between two half-shaft gears 8 in the differential, one side of the locking seat unit 1 is provided with a driving shaft 2 whose one end is used to extend out of the differential housing and the other end abuts against the locking seat unit 1 to push the locking seat unit 1 to move and make the locking seat unit 1 mesh with one of the half-shaft gears 8, and the other side of the locking seat unit 1 is provided with an elastic reset unit.

[0031] The driving shaft 2 is vertically arranged on the locking seat unit 1, one end of the driving shaft 2 extends laterally out of the differential, and the other end abuts against the locking seat unit 1. When the vehicle is traveling on a complex road, the thrust assembly applies a certain thrust toward the driving shaft 2, the driving shaft 2 is laterally displaced and pushes the locking seat unit 1 toward one of the half-shaft gears 8, and finally engages with the inner ring of the half-shaft gear 8. An elastic reset unit 3 is arranged on the other side of the locking seat unit 1. When the vehicle is traveling on a normal road, the thrust applied by the thrust assembly toward the driving shaft 2 disappears, and the elastic potential energy of the elastic reset unit 3 automatically lifts the locking seat unit 1 to reset. Combined with the above description, it can be known that when the assembly is completed, one end face of the locking seat unit 1 is used to mesh with one of the half-shaft gears 8 and the elastic reset unit 3 is arranged on the end face, and the driving shaft 2 is arranged on the other end face of the locking seat unit 1.

[0032] Furthermore, the thrust assembly includes a pushing cam 4 for being sleeved on the outer periphery of one end of the differential housing, one end face of the pushing cam 4 is provided with a corrugated surface 401 which abuts against the end of the pushing shaft 2 extending out of the differential housing, the inner ring of the pushing cam 4 is provided with an electromagnetic coil 5 for controlling the rotation state of the pushing cam 4, the pushing cam 4 is sleeved on the outer periphery of one end of the differential housing, it can rotate synchronously with the differential, and can also rotate relative to the differential, the electromagnetic coil 5 is arranged on the inner ring of the pushing cam 4 and the electromagnetic coil 5 is fixedly arranged, no matter what state it is in, the electromagnetic coil 5 remains stationary, the pushing cam 4 is made of metal, and the pushing cam 4 is adsorbed by the energized state of the electromagnetic coil 5 to change the relative motion state of the pushing cam 4 and the differential.

[0033] In combination with the above description, one end of the driving shaft 2 extends laterally out of the differential, and the driving cam 4 is provided with one end of a corrugated surface 401 to abut against the extended end of the driving shaft 2. The corrugated surface 401 has an undulating arc and the position of the driving cam 4 remains unchanged. Therefore, when the electromagnetic coil 5 is energized, the driving cam 4 is adsorbed and fixed, and the rotation of the differential will drive the driving shaft 2 to move along the corrugated surface 401. When the driving shaft 2 moves to different undulations of the corrugated surface 401, the corrugated surface 401 will push the driving shaft 2 to move.

[0034] In a possible embodiment, the corrugated surface 401 is symmetrical, that is, the corrugated surface 401 includes two recessed portions and two protrusions that are alternately arranged, and the recessed portions and the protrusions are arranged along the circumference of the pushing cam 4 toward one side of the pushing shaft 2, and the pushing shaft 2 passes through the recessed portions and the protrusions in sequence to realize the reciprocating motion of the pushing shaft 2.

[0035] When the differential does not need to be locked, the electromagnetic coil 5 is in an off-state, and the push shaft 2 is held against the concave portion of the corrugated surface 401, pushing the cam 4 to rotate together with the differential. When the differential needs to be locked, the electromagnetic coil 5 is in an on-state, pushing the cam 4 to be adsorbed and stop rotating, and the differential keeps rotating, pushing the shaft 2 to move therewith and gradually move to the protruding portion of the corrugated surface 401, pushing the locking seat unit 1 to move.

[0036] The present application sets a locking seat unit 1 between the two half-shaft gears 8, which can move laterally to mesh with one of the half-shaft gears 8, and cooperates with a pushing cam 4 which is sleeved on the outer periphery of one end of the differential housing and has a corrugated surface 401. According to the movement of the pushing shaft 2, the pushing shaft 2 can be forced to push the locking seat unit 1, so that when the vehicle is driving on an abnormal road surface, the gears inside the differential can be locked to prevent the vehicle from having abnormal conditions. The overall structure of the shaft-push differential lock in the present application is simple and can be adapted to a variety of differentials. The assembly process is simple, and there is no need to replace and modify the original internal structure of the differential on a large scale, which can save a lot of capital investment.

[0037] Furthermore, Figure 3 A schematic diagram of the locking assembly structure of a shaft-pushing differential lock provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the locking seat unit 1 includes a fixed base 101, one end face of which is provided with a meshing protrusion 102, and the outer periphery of the meshing protrusion 102 is provided with a flower tooth surface 103, the thickness of the fixed base 101 and the meshing protrusion 102 is less than the sum of the distance between the two half-shaft gears 8, and the outer diameter of the meshing protrusion 102 is less than the inner diameter of the inner ring of the half-shaft gear 8, when the fixed base 101 is displaced laterally, the meshing protrusion 102 enters the inner ring of the half-shaft gear 8, and the inner ring of the half-shaft gear 8 is pre-opened with a mating surface matching the flower tooth surface 103, so that the locking teeth therebetween can be engaged.

[0038] Furthermore, a displacement long axis 104 is provided on the side of the fixed base 101 away from the engaging protrusion 102, and the displacement long axis 104 passes through the fixed base 101. The fixed base 101 has a certain thickness and a through hole is provided on the base body of the fixed base 101. The displacement long axis 104 passes through the through hole to be fixed to the fixed base 101, and when the assembly is completed, the fixed base 101 is located at the center point of the displacement long axis 104.

[0039] For further information, see Figure 2The displacement long shaft 104 has a certain length, and the driving shaft 2 is located on the side of the displacement long shaft 104 away from the meshing protrusion 102. When the differential is locked, the driving shaft 2 drives the displacement long shaft 104 to drive the fixed base 101 to move. In order to ensure that the overall force of the locking seat unit 1 is uniform when locked, in a possible embodiment of the present application, there are two driving shafts 2, and the two driving shafts 2 are respectively arranged at both ends of the displacement long shaft 104. In order to improve the accuracy and stability of the structural force, the two ends of the side surface of the displacement long shaft 104 away from the meshing protrusion 102 are respectively provided with fixed grooves 105 corresponding to the position of the driving shaft 2. The inner diameter of the fixing groove 105 is larger than the outer diameter of the driving shaft 2, and the depth of the fixing groove 105 is less than the thickness of the displacement long shaft 104. The ends of the two driving shafts 2 facing the displacement long shaft 104 are respectively located in the two fixing grooves 105, and the other ends of the two driving shafts 2 extend laterally out of the differential housing.

[0040] Furthermore, the elastic reset unit 3 includes a reset spring 301, one end of the reset spring 301 is against a side of the displacement shaft 104 away from the driving shaft 2, and the other end is used to be embedded in the differential housing. In combination with the above description, one side of the displacement shaft 104 is provided with a fixing groove 105 for accommodating the end of the driving shaft 2, and the reset spring 301 is located on the other side of the displacement shaft 104 and opposite to the position of the fixing groove 105. When the driving shaft 2 moves to the recessed part of the driving cam 4, the thrust on the driving shaft 2 gradually disappears, and the elastic potential energy of the reset spring 301 pushes the displacement shaft 104 and the fixed base 101 to reset.

[0041] For further information, see Figure 2 A planetary gear connection unit is also provided on the fixed base 101. The planetary gear connection unit includes two fixed short shafts 6 arranged at intervals, and the fixed short shafts 6 are arranged perpendicular to the displacement long shaft 104. The two fixed short shafts 6 are respectively abutted against the two sides of the displacement long shaft 104, and form a cross structure with the displacement long shaft 104. When the assembly is completed, one end of the fixed short shaft 6 is located in the fixed base 101, and the other end of the fixed short shaft 6 extends horizontally out of the fixed base 101 and is connected to the planetary gear 7 in the differential to complete the normal adjustment of the differential.

[0042] Furthermore, in actual applications, the positions of the two planetary gears 7 in the differential are fixed, which means that the position of the fixed short shaft 6 will not change, that is, when the fixed base 101 is displaced toward one of the half-shaft gears 8, the fixed short shaft 6 remains in position and escapes from the fixed base 101. Therefore, in a possible embodiment of the present application, the fixed base 101 is provided with a short shaft engaging groove 106 which is open at one end and radially penetrates the fixed base 101, the sealed end of the short shaft engaging groove 106 is facing the direction of the meshing protrusion 102, and the open end of the short shaft engaging groove 106 is facing the direction of the driving shaft 2. Under normal conditions, one end of the fixed short shaft 6 is located in the short shaft engaging groove 106, and when the fixed base 101 is displaced, the fixed short shaft 6 escapes from the open end of the short shaft engaging groove 106.

[0043] The working mechanism of the shaft-push differential lock in the present application is as follows: under normal driving conditions, the electromagnetic coil 5 is in an off-state, the push shaft 2 is pressed against the concave portion of the corrugated surface 401 of the push cam 4, and the push cam 4 rotates together with the differential. When locking is required, the electromagnetic coil 5 is in an on-state, the push cam 4 is adsorbed and stops rotating. At this time, the differential is kept in a rotating state, the push shaft 2 begins to move along the corrugated surface 401 and moves to the protrusion of the corrugated surface 401, so that the push shaft 2 gradually moves toward the inside of the differential housing and synchronously pushes the displacement long shaft 104 and the fixed base 101 to move toward the half-shaft gear 8 away from the push shaft 2, until the meshing protrusion 102 on the fixed base 101 is embedded in the inner ring of the half-shaft gear 8. At this time, the reset spring 301 is in a compressed state, the speed of the differential is locked, the electromagnetic coil 5 is restored to the off-state again, the push cam 4 is released and rotates with the differential, and the locking process is completed. The unlocking process is consistent with the locking process. The electromagnetic coil 5 is energized to adsorb and push the cam 4, pushing the shaft 2 to move along the corrugated surface 401 and move to the concave part of the corrugated surface 401. The elastic potential energy of the return spring 301 pushes the displacement shaft 104 and the locking seat unit 1 back to their original positions, and the differential is unlocked.

[0044] The axle-push differential lock in the present application is configured with a locking seat unit 1 and a pushing shaft 2, in conjunction with a pushing cam 4 with a corrugated surface 401 and an electromagnetic ring 5 for controlling the rotation state of the pushing cam 4, and can utilize the rotation of the differential to push the pushing shaft 2 to perform lateral reciprocating motion, so as to achieve locking and unlocking of the differential. At the same time, the locking seat unit 1 is assembled between the two original half-shaft gears 8 of the differential, and the pushing cam 4 and the electromagnetic ring 5 are sleeved on the original outer end of the differential housing, which can adapt to most types of differentials. When modifying a differential without a locking function, the structure of the original differential can be directly installed without large-scale replacement of accessories, which can avoid unnecessary waste and save capital investment. At the same time, the axle-push differential lock in the present application is simple to install, does not require complicated debugging work, and has high installation efficiency.

[0045] In a second aspect, the present application also provides a differential, Figure 4 A schematic diagram of a differential structure provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the differential includes two planetary gears 7, two half-axle gears 8 and the above-mentioned axle-push differential lock, wherein the two planetary gears 7 and the two half-axle gears 8 are meshed with each other, and the lock seat unit 1 in the axle-push differential lock is located between the two half-axle gears 8. Furthermore, the differential also includes a first shell 9 and a second shell 10 that cover each other. In the assembled state, the first shell 9 and the second shell 10 are arranged on the left and right, and the first shell 9 and the second shell 10 are connected by a connecting piece, and the first shell 9 is provided with displacement holes whose number is the same as the driving shaft 2 and whose position is opposite to each other, so that the driving shaft 2 can pass through and displace laterally in the displacement holes, and the inner wall of the second shell 10 is provided with a fixing hole for fixing the reset elastic reset unit 3.

[0046] Furthermore, the outer periphery of the differential is provided with a main reduction gear 11 for driving the differential to rotate. The main reduction gear 11 is meshed with the differential housing and is provided with an output shaft connected to the wheel. When the vehicle is driving, the main reduction gear 11 rotates synchronously and drives the differential to rotate. Combined with the above description, when the reducer needs to be locked or unlocked, the main reduction gear 11 is kept in a rotating state, which can drive the differential to rotate.

[0047] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the 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 the specific circumstances.

[0048] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0049] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A shaft-push differential lock, characterized in that: include: A locking assembly, the locking assembly comprising a locking seat unit (1) for being arranged between two half-shaft gears (8) in a differential, one side of the locking seat unit (1) being provided with a driving shaft (2) having one end for extending out of the differential housing and the other end abutting against the locking seat unit (1) so as to push the locking seat unit (1) to move and make the locking seat unit (1) mesh with one of the half-shaft gears (8), and the other side of the locking seat unit (1) being provided with an elastic reset unit (3); A thrust assembly, the thrust assembly comprising a push cam (4) for sleeved on the outer periphery of one end of a differential housing, one end surface of the push cam (4) being provided with a corrugated surface (401) which abuts against the end of the push shaft (2) extending out of the differential housing, the corrugated surface (401) having staggered protrusions and recesses, and an inner ring of the push cam (4) being provided with an electromagnetic ring (5) for controlling the rotation state of the push cam (4).

2. The axle-thrust differential lock according to claim 1, characterized in that: The locking seat unit (1) comprises a fixed base (101), one end surface of which is provided with an engaging protrusion (102), and the outer periphery of the engaging protrusion (102) is provided with a toothed surface (103).

3. The axle-thrust differential lock according to claim 2, characterized in that: A displacement long axis (104) is provided on a side of the fixed base (101) away from the engaging protrusion (102), and the displacement long axis (104) passes through the fixed base (101).

4. The axle-thrust differential lock according to claim 3, characterized in that: Two ends of a side surface of the displacement long axis (104) away from the engaging protrusion (102) are respectively provided with fixing grooves (105) opposite to the position of the driving axis (2).

5. The axle-thrust differential lock according to claim 4, characterized in that: One end of the driving shaft (2) is held in the fixing groove (105), and the other end is used to extend laterally out of the differential housing.

6. The thrust differential lock according to claim 3, characterized in that: The elastic reset unit (3) comprises a reset spring (301), one end of which is pressed against a side of the displacement long axis (104) away from the driving axis (2), and the other end of which is used to be embedded in the differential housing.

7. The thrust differential lock according to claim 3, characterized in that: A planetary gear connection unit is also provided on the fixed base (101), and the planetary gear connection unit comprises two fixed short shafts (6) arranged at intervals, and the fixed short shafts (6) are arranged perpendicular to the displacement long shaft (104).

8. The thrust differential lock according to claim 7, characterized in that: One end of the fixed short shaft (6) is arranged in the fixed base (101), and the other end horizontally extends out of the fixed base (101) and is used to connect to the planetary gear (7) in the differential.

9. A differential, comprising a first housing (9) and a second housing (10) covering each other, characterized in that: The differential is provided with an axle-push differential lock as described in any one of claims 1 to 8, the push cam (4) is sleeved outside the first housing (9) and one end of the push shaft (2) extends out of the first housing (9), and one end of the elastic reset unit (3) is embedded in the second housing (10).

10. A differential as claimed in claim 9, characterized in that: The outer periphery of the differential is sleeved with a main reduction gear (11) for driving the differential to rotate.

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