Differential assembly anti-rotation device

Abstract

An anti-rotation device for a differential assembly relates to the technical field of differential assemblies and is used for solving the technical problem that the differential assembly rotates when a torque wrench is used in the assembling process in the prior art. In the differential assembly anti-rotation device, an anti-rotation shaft fork opening is formed in the end, away from the bottom plate, of the anti-rotation shaft, and an anti-rotation shaft special-shaped end is arranged at the end, close to the bottom plate, of the anti-rotation shaft; the bottom plate is provided with a bottom plate special-shaped hole matched with the anti-rotating shaft special-shaped end, the bottom plate is fixed, and the anti-rotating shaft special-shaped end is used for enabling the anti-rotating shaft not to rotate around the axis of the anti-rotating shaft after being inserted into the bottom plate special-shaped hole; moreover, the anti-rotation shaft fork opening is used for being matched with a straight shaft in the differential mechanism assembly so as to limit rotation of the differential mechanism assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of differential assemblies, in particular to an anti-rotation device for a differential assembly. Background Art

[0002] The differential assembly is a key component in the gearbox and reducer. The gears need to be installed on the differential assembly by tightening the bolts. During the tightening process, it is necessary to ensure that the differential assembly does not rotate.

[0003] In the prior art, there is a differential anti-rotation assembly workbench, including a base plate and an upper plate, which are welded together through a vertical reinforcing rib plate, and a circular hole is opened in the center of the base plate, guide rollers are fixed on both sides of the circular hole, and a limiting stop iron is set at the guide end of the guide roller; a semicircular groove is opened in the upper plate, a positioning hole is set on it, and a positioning pin is inserted in the positioning hole.

[0004] However, the inventors of the present application have discovered that the prior art uses a large number of components to prevent the differential assembly from rotating, and has a complex structure and high cost. Therefore, how to provide a differential assembly anti-rotation device that has a simple structure and effectively prevents the differential assembly from rotating has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0005] The utility model aims to provide a differential assembly anti-rotation device for solving the technical problem of the differential assembly rotating when a torque wrench is used in the prior art during assembly. Compared with the anti-rotation method in the prior art, the device has a simple structure, convenient operation and high efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A differential assembly anti-rotation device, comprising: a base plate, and an anti-rotation shaft connected to the base plate; the anti-rotation shaft has an anti-rotation shaft fork at one end away from the base plate, and has an anti-rotation shaft special-shaped end at one end of the anti-rotation shaft adjacent to the base plate;

[0008] The bottom plate has a bottom plate shaped hole matching the shaped end of the anti-rotation shaft, and the bottom plate is fixed. The shaped end of the anti-rotation shaft is inserted into the bottom plate shaped hole to prevent the anti-rotation shaft from rotating around its own axis; and the fork of the anti-rotation shaft is used to cooperate with the straight shaft in the differential assembly to limit the rotation of the differential assembly.

[0009] Wherein, the anti-rotation shaft fork adopts a U-shaped notch structure.

[0010] Specifically, the special-shaped end of the anti-rotation shaft adopts an annular concave platform structure.

[0011] Furthermore, the special-shaped hole of the bottom plate adopts a rectangular groove structure, and the protruding portion formed by the annular concave platform structure of the special-shaped end of the anti-rotation shaft is inserted into the rectangular groove structure.

[0012] Furthermore, the bottom plate is a square plate, and the bottom plate special-shaped hole is located at the center of the bottom plate.

[0013] Compared with the prior art, the differential assembly anti-rotation device described in the utility model has the following advantages:

[0014] In the differential assembly anti-rotation device provided by the utility model, the end of the anti-rotation shaft away from the bottom plate has an anti-rotation shaft fork, and the end of the anti-rotation shaft adjacent to the bottom plate has an anti-rotation shaft special-shaped end; the bottom plate has a bottom plate special-shaped hole matching the anti-rotation shaft special-shaped end, and the bottom plate is fixed, and the anti-rotation shaft special-shaped end is inserted into the bottom plate special-shaped hole to prevent the anti-rotation shaft from rotating around its own axis; and the anti-rotation shaft fork is used to cooperate with the straight shaft in the differential assembly to limit the rotation of the differential assembly. Therefore, the differential assembly anti-rotation device provided by the utility model effectively achieves the purpose of preventing the differential assembly from rotating by cooperating with the straight shaft in the differential assembly and cooperating with the anti-rotation shaft and the bottom plate, that is, the differential anti-rotation function is realized by two components (the bottom plate and the anti-rotation shaft), and the structure is compact, the volume is small, the operation is convenient, and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the differential assembly anti-rotation device provided in an embodiment of the utility model;

[0016] Figure 2 A schematic diagram of the exploded structure of the differential assembly anti-rotation device provided in an embodiment of the utility model;

[0017] Figure 3 A schematic diagram of the assembly structure of the differential assembly anti-rotation device and the differential assembly provided in an embodiment of the utility model;

[0018] Figure 4 A cross-sectional view of the assembly structure of the differential assembly anti-rotation device and the differential assembly provided in an embodiment of the utility model.

[0019] Reference numerals:

[0020] 1-bottom plate; 11-special-shaped hole of bottom plate;

[0021] 2-anti-rotation shaft; 21-anti-rotation shaft fork; 22-anti-rotation shaft special-shaped end;

[0022] 3- Differential assembly; 31- Straight shaft. DETAILED DESCRIPTION

[0023] For ease of understanding, the differential assembly anti-rotation device provided by the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings of the specification.

[0024] The utility model provides a differential assembly anti-rotation device, such as Figure 1-Figure 4 As shown, it comprises: a bottom plate 1, and an anti-rotation shaft 2 connected to the bottom plate 1; the end of the anti-rotation shaft 2 away from the bottom plate 1 has an anti-rotation shaft fork 21, and the end of the anti-rotation shaft 2 close to the bottom plate 1 has an anti-rotation shaft special-shaped end 22;

[0025] The base plate 1 has a base plate shaped hole 11 that matches the anti-rotation shaft shaped end 22, and the base plate 1 is fixed. After the anti-rotation shaft shaped end 22 is inserted into the base plate shaped hole 11, it is used to prevent the anti-rotation shaft 2 from rotating around its own axis; and the anti-rotation shaft fork 21 is used to cooperate with the straight shaft 31 in the differential assembly 3 to limit the rotation of the differential assembly 3.

[0026] Compared with the prior art, the differential assembly anti-rotation device described in the embodiment of the utility model has the following advantages:

[0027] In the differential assembly anti-rotation device provided by the embodiment of the utility model, since the anti-rotation shaft 2 has an anti-rotation shaft fork 21 at one end away from the bottom plate 1, and the anti-rotation shaft 2 has an anti-rotation shaft special-shaped end 22 at one end adjacent to the bottom plate 1; the bottom plate 1 has a bottom plate special-shaped hole 11 matching the anti-rotation shaft special-shaped end 22, and the bottom plate 1 is fixed, and the anti-rotation shaft special-shaped end 22 is inserted into the bottom plate special-shaped hole 11 to prevent the anti-rotation shaft 2 from rotating around its own axis; and the anti-rotation shaft fork 21 is used to be connected with the differential assembly 3 The straight shaft 31 in the differential assembly 3 cooperates with each other to limit the rotation of the differential assembly 3. Therefore, the differential assembly anti-rotation device provided by the embodiment of the utility model effectively achieves the purpose of preventing the differential assembly 3 from rotating by cooperating with the straight shaft 31 in the differential assembly 3, and the anti-rotation shaft 2 cooperates with the base plate 1, that is, the differential anti-rotation function is realized by two components (base plate 1 and anti-rotation shaft 2), and the structure is compact, the volume is small, the operation is convenient, and the efficiency is high.

[0028] Among them, Figure 1 and Figure 2 As shown, the anti-rotation shaft fork 21 may adopt a U-shaped notch structure so as to allow the straight shaft 31 of the differential assembly 3 to pass through, thereby achieving the purpose of limiting the rotation of the differential assembly 3 .

[0029] Specifically, Figure 1 and Figure 2 As shown, the anti-rotation shaft shaped end 22 may adopt an annular concave structure, that is, the anti-rotation shaft shaped end 22 has a protruding portion that can be inserted into the bottom plate shaped hole 11.

[0030] Furthermore, if Figure 1 and Figure 2 As shown, the above-mentioned bottom plate shaped hole 11 can adopt a rectangular groove structure, so that the protrusion formed by the annular concave platform structure of the anti-rotation shaft shaped end 22 can be inserted into the rectangular groove structure, thereby achieving the anti-rotation shaft 2 cannot rotate around its own axis.

[0031] Furthermore, if Figure 1 and Figure 2 As shown, the bottom plate 1 may preferably be a square plate, and the bottom plate special-shaped hole 11 may preferably be located at the center of the bottom plate 1 .

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A differential assembly anti-rotation device, characterized in that: include: A bottom plate, and an anti-rotation shaft connected to the bottom plate; the anti-rotation shaft has an anti-rotation shaft fork at one end away from the bottom plate, and has an anti-rotation shaft special-shaped end at one end of the anti-rotation shaft adjacent to the bottom plate; The bottom plate has a bottom plate shaped hole matching the shaped end of the anti-rotation shaft, and the bottom plate is fixed. The shaped end of the anti-rotation shaft is inserted into the bottom plate shaped hole to prevent the anti-rotation shaft from rotating around its own axis; and the fork of the anti-rotation shaft is used to cooperate with the straight shaft in the differential assembly to limit the rotation of the differential assembly.

2. The differential assembly anti-rotation device according to claim 1, characterized in that: The anti-rotation shaft fork adopts a U-shaped notch structure.

3. The differential assembly anti-rotation device according to claim 1 or 2, characterized in that: The special-shaped end of the anti-rotation shaft adopts an annular concave platform structure.

4. The differential assembly anti-rotation device according to claim 3, characterized in that: The special-shaped hole of the bottom plate adopts a rectangular groove structure, and the protruding portion formed by the annular concave platform structure of the special-shaped end of the anti-rotation shaft is inserted into the rectangular groove structure.

5. The differential assembly anti-rotation device according to claim 4, characterized in that: The bottom plate is a square plate, and the bottom plate special-shaped hole is located at the center of the bottom plate.

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