Rear axle speed reducer

Abstract

The utility model provides a rear axle speed reducer, which belongs to the technical field of speed reducers and comprises a box body, a first cover plate, a second cover plate, a speed reduction locking component, a speed reduction locking component and a speed reduction locking component. The speed reduction locking assembly comprises a differential mechanism shell, clamping teeth, a driven gear ring, a planetary gear, a planetary driven gear, an input gear, an idle gear, a speed reduction gear, a driving bevel gear, a driving rod, a torsion spring, a shaft sleeve, a torsion spring, a plug pin, a clutch claw, a spline groove and a shifting fork. By means of the differential locking assembly, when the vehicle runs under the complex or severe road condition, for example, the wheel on one side falls into the muddy ground or the snowfield and slips, the differential mechanism temporarily loses the differential function, so that the vehicle is helped to get out of trouble, traction force is enhanced, after differential locking, the wheels on the two sides obtain the same power output, the traction force and passing ability of the vehicle are improved, and the service life of the vehicle is prolonged. The method is particularly more obvious in cross-country or complex terrains.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of speed reducer, specifically relates to rear axle speed reducer. BACKGROUND

[0002] The principle of the speed reducer is mainly to use gear meshing with different gear numbers to realize speed reduction and torque increase, when the motor, internal combustion engine or other high-speed rotating power passes through the pinion on the input shaft of the speed reducer to mesh with the gear on the output shaft, the purpose of speed reduction can be achieved, and through precise speed ratio calculation method, the speed reducer can effectively reduce the speed and increase the torque.

[0003] The main function of the differential lock is to lock the differential when one side of the vehicle wheel slips, so that the two sides of the wheel rotate at the same speed, thereby improving the escape ability of the vehicle, the fork is used as a control mechanism, and the combination or separation of the clutch jaw and the differential housing is controlled through the action of the fork, so that the locking or unlocking of the differential is realized, the stability is insufficient: design defects: if the design of the fork is not reasonable, or there are problems in the material, machining precision and the like, the fork may shake or deviate during the action, thereby affecting the stable driving of the clutch jaw, wear and aging: after a long time of use, the fork and its related parts may cause the increase of the matching gap due to wear, aging and the like, thereby reducing the stability, poor control accuracy: inaccurate action: due to the design or manufacturing problems of the fork, the position and force of the clutch jaw may not be accurately controlled during the action, thereby affecting the locking effect of the differential lock, slow response speed: in some cases, the action response speed of the fork may not meet the actual demand, so that the differential lock cannot be timely intervened or exited, high failure rate: complex structure: if the structure design of the fork and its related parts is too complex, the number of fault points may increase, thereby increasing the failure rate, difficult maintenance: the complex structure may also increase the difficulty and cost of maintenance, and reduce the overall reliability of the system. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing rear axle speed reducer, aims at solving the problem proposed in the background art.

[0005] The rear axle speed reducer comprises,

[0006] The box body, the first cover plate and the second cover plate are arranged in the interior of the box body through bolt fixing;

[0007] The application discloses a differential locking assembly arranged at the inside of the box body, wherein the differential locking assembly comprises a differential housing, a catch, a driven gear ring, a planetary gear, a planetary driven gear, an input gear, an idle gear, a reduction gear, a driving cone gear, a driving rod, a torsion spring, a shaft sleeve, a torsion spring, a bolt, a clutch claw, a spline groove and a yoke.

[0008] Further, the outer wall of the box body is fixedly provided with an electromagnetic valve.

[0009] Further, the output end of the electromagnetic valve is rotatably inserted into the inner wall of the other end of the driving rod.

[0010] Further, the outer wall of the box body is fixedly provided with an electromagnetic valve.

[0011] Further, the output end of the electromagnetic valve is rotatably inserted into the inner wall of the other end of the driving rod.

[0012] Further, the clutch claw and the catch are matched with each other.

[0013] Compared with the prior art, the application has the advantages that:

[0014] Through the differential locking assembly, the differential locking function is realized: when the vehicle runs on a complex or bad road, for example, when one side of the wheel is stuck in the mud or snow and causes skidding, the differential lock can tightly combine the differential housing and the half shaft, so that the differential temporarily loses the differential function, thus the whole torque of the vehicle can be smoothly transferred to the other side of the driving wheel without skidding, thereby helping the vehicle to get out of trouble and enhancing the traction: after the differential locking, the two sides of the wheel get the same power output, which improves the traction and passability of the vehicle, especially in off-road or complex terrain. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:

[0016] Fig. 1 It is a perspective view of the present application;

[0017] Fig. 2 It is a perspective view of the planetary gear of the present application;

[0018] Fig. 3 It is a perspective view of the pull fork of the present application.

[0019] In the drawings: 1, box body; 2, first cover plate; 3, second cover plate; 4, electromagnetic valve; 5, motor; 6, differential housing; 7, driven gear ring; 8, planetary gear; 9, planetary driven gear; 10, input gear; 11, idler gear; 12, reduction gear; 13, driving bevel gear; 14, driving rod; 15, torsion spring; 16, shaft sleeve; 17, torsion spring; 18, bolt; 19, clutch claw; 20, spline groove; 21, pull fork; 601, pawl. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mount", "set", "sleeve / interface", "connection" and the like should be understood broadly, for example, "connection", can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements inside.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Please refer to Figs. 1-3 The technical scheme provided by the embodiment is as follows:

[0024] The rear axle reducer comprises,

[0025] The box body 1, the first cover plate 2 and the second cover plate 3 are arranged in the interior of the box body 1 through bolt fixing.

[0026] The reduction locking assembly is arranged in the interior of the box body 1, wherein: the reduction locking assembly comprises a differential housing 6, a clamping tooth 601, a driven gear ring 7, a planetary gear 8, a planetary driven gear 9, an input gear 10, an idle gear 11, a reduction gear 12, a driving rod 14, a torsion spring 15, a shaft sleeve 16, a torsion spring 17, a bolt 18, a clutch claw 19, a spline groove 20 and a pull fork 21, the differential housing 6 is rotatably embedded in the interior of the box body 1, the clamping tooth 601 is arranged on the outer wall of one end of the differential housing 6, the driven gear ring 7 is fixedly arranged on the outer wall of the differential housing 6, the planetary gear 8 is rotatably embedded in the interior of the differential housing 6, the planetary driven gear 9 is rotatably embedded in the interior of the differential housing 6, the input gear 10 is rotatably embedded in the inner wall of the box body 1 through a rotating shaft and a gear, the idle gear 11 is rotatably embedded in the inner wall of the box body 1 through a rotating shaft and a gear, the reduction gear 12 is rotatably embedded in the inner wall of the box body 1 through a rotating shaft and a gear, the input gear 10, the idle gear 11 and the reduction gear 12 are in meshing transmission connection, the driving cone gear 13 is fixedly arranged on the outer wall of one side of the reduction gear 12, the torsion spring 15 is sleeved on the outer wall of the driving rod 14, the two ends of the torsion spring 15 are rotatably inserted into the outer wall of the pull fork 21, the bolt 18 is threadedly connected to the inner wall of the box body 1, the shaft sleeve 16 is sleeved on the outer wall of the bolt 18, the shaft sleeve 16 is embedded in the inner wall of one end of the driving rod 14, the two ends of the pull fork 21 are rotatably inserted into the outer wall of the clutch claw 19, the spline groove 20 is arranged on the inner wall of the clutch claw 19, and the torsion spring 17 is sleeved on the outer wall of the two ends of the shaft sleeve 16.

[0027] In the embodiment of the utility model, through differential locking assembly, differential locking function: when the vehicle runs in complex or bad road conditions, such as one side wheel sinks into mud or snow and causes skidding, differential lock can combine differential housing and half shaft closely, so that differential temporarily loses differential function, thus, the whole torque of the vehicle can be smoothly transferred to the driving wheel of the other side without skidding, thereby helping the vehicle to get out of trouble and enhancing traction: after differential locking, both sides of the wheel get the same power output, which improves the traction and passability of the vehicle, especially in off-road or complex terrain, power input is completed through motor 5, input gear 10 is driven to rotate, transmission is carried out through idle gear 11, deceleration is completed through reduction gear 12, subsequently, driven gear is driven to rotate through driving bevel gear 13, planet gear 8 is driven to rotate through differential housing 6, power distribution is completed through planet driven gear 9, when differential needs to be locked, driving rod 14 is driven to rotate on shaft sleeve 16 through electromagnetic valve 4, pull fork 21 is driven to move through torsion spring 15 and torsion spring 17, clutch jaw 19 is driven to move through pull fork 21, and locking of tooth 601 is completed.

[0028] Specifically, the outer wall of the box body 1 is fixedly provided with an electromagnetic valve 4.

[0029] In the embodiment of the utility model, the electromagnetic valve 4 can realize efficient driving.

[0030] Specifically, the output end of the electromagnetic valve 4 is rotatably inserted into the inner wall of the other end of the driving rod 14.

[0031] In the embodiment of the utility model, the output end of the electromagnetic valve 4 is rotatably inserted into the inner wall of the other end of the driving rod 14, which can ensure stable power transmission.

[0032] Specifically, the outer wall of the box body 1 is fixedly provided with an electromagnetic valve 4.

[0033] In the embodiment of the utility model, the outer wall of the box body 1 is fixedly provided with an electromagnetic valve 4, which can ensure stable power input.

[0034] Specifically, the output end of the motor 5 is fixedly arranged at the center of the outer wall of the input gear 10.

[0035] In the embodiment of the utility model, the output end of the motor 5 is fixedly arranged at the center of the outer wall of the input gear 10, which can ensure stable input of high-speed power.

[0036] Specifically, the clutch jaw 19 and the tooth 601 are matched with each other.

[0037] In the embodiment of the utility model,

[0038] Working principle:

[0039] Through the differential locking assembly, the differential locking function: when the vehicle is running in complex or bad road conditions, such as one side wheel is stuck in mud or snow and causes slip, the differential lock can combine the differential case and the half shaft tightly, so that the differential temporarily loses the differential function, so that the whole torque of the vehicle can be smoothly transferred to the other side of the non-slip driving wheel, so as to help the vehicle to get out of trouble and enhance the traction: after the differential locking, the two sides of the wheel get the same power output, which improves the traction and passability of the vehicle, especially in off-road or complex terrain, through the motor 5 to complete the power input, drive the input gear 10 to rotate, through the idle gear 11 to drive, through the reduction gear 12 to complete the speed reduction, then use the driving bevel gear 13 to drive the driven gear to rotate, use the differential case 6 to drive the planetary gear 8 to rotate, use the planetary driven gear 9 to complete the power distribution, when the differential is needed to be locked, the electromagnetic valve 4 drives the driving rod 14 to rotate on the shaft sleeve 16, the torsion spring 15 and the torsion spring 17 drive the pull fork 21 to move, the pull fork 21 drives the clutch pawl 19 to move, and the locking of the tooth 601 is completed.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A rear axle reduction gear characterised in that, The utility model relates to a kind of speed reducer locking assembly, including, Box (1), first cover plate (2) and second cover plate (3), the first cover plate (2) and second cover plate (3) are fixed by bolt and are arranged at the inside of box (1); Speed reduction locking assembly is arranged at the inside of box (1), wherein: the speed reduction locking assembly includes differential case (6), catch (601), driven gear ring (7), planetary gear (8), planetary driven gear (9), input gear (10), idler gear (11), reduction gear (12), driving cone gear (13), drive rod (14), torsion spring (15), shaft sleeve (16), torsion spring (17), latch (18), clutch jaw (19), spline groove (20) and yoke (21), the differential case (6) is rotatably embedded at the inside of box (1), the catch (601) is opened at the outer wall of one end of differential case (6), the driven gear ring (7) is fixedly arranged at the outer wall of differential case (6), the planetary gear (8) is rotatably embedded at the inside of differential case (6), planetary driven gear (9) is rotatably embedded at the inside of differential case (6), the input gear (10) is rotatably embedded in the inner wall of box (1) by shaft and gear, the idler gear (11) is rotatably embedded in the inner wall of box (1) by shaft and gear, the reduction gear (12) is rotatably embedded in the inner wall of box (1) by shaft and gear, the input gear (10), idler gear (11) and reduction gear (12) are engaged transmission connection, the driving cone gear (13) is fixedly arranged at the outer wall one side center of reduction gear (12), the torsion spring (15) is sleeved on the outer wall of drive rod (14), the both ends of torsion spring (15) are rotatably inserted in the outer wall of yoke (21), the latch (18) is threadedly connected to the inner wall of box (1), the shaft sleeve (16) is sleeved on the outer wall of latch (18), the shaft sleeve (16) is embedded in the inner wall of one end of drive rod (14), the both ends of yoke (21) are rotatably inserted in the outer wall of clutch jaw (19), the spline groove (20) is formed in the inner wall of clutch jaw (19), the torsion spring (17) is sleeved on the both ends of shaft sleeve (16) outer wall.

2. The rear axle reducer of claim 1, wherein, The outer wall of the box (1) is fixedly provided with a solenoid valve (4).

3. The rear axle reducer of claim 2, wherein, The output end of the solenoid valve (4) is rotatably inserted into the inner wall of the other end of the drive rod (14).

4. The rear axle reducer of claim 3, wherein, The outer wall of the box (1) is fixedly provided with a motor (5).

5. The rear axle reducer of claim 4, wherein, The output end of the motor (5) is fixedly arranged on the outer wall of the one side center of the input gear (10).

6. The rear axle reducer of claim 5, wherein, The clutch jaw (19) and the catch (601) are matched with each other.

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