A deep cavity mounted shift fork spring auxiliary device

Abstract

The utility model relates to a deep cavity installation fork spring auxiliary device, including a device body, the outer periphery of the device body is provided with a workpiece positioning circular surface adapted to the mounting hole on the reducer housing; one end of the device body is provided with a spring positioning column, the spring positioning column is a semi-cylinder, and the interface between the spring positioning column and the workpiece positioning circular surface is set as a spring limiting surface; a fork mounting surface is provided along the side plane of the spring positioning column, and the interface between the fork mounting surface and the workpiece positioning circular surface is set as the fork limiting surface. The device of the utility model can quickly and reliably install the spring online, prevent the spring from falling out during the installation process, and can also compress the spring, install the fork, and ensure that the fork hole, the spring hole and the mounting hole of the reducer housing are concentric, which can well improve the working efficiency, improve the assembly accuracy, and greatly reduce the labor intensity of the staff.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle assembly, in particular to a deep cavity mounted shift fork spring auxiliary device. Background Art

[0002] During the assembly process of the axle reducer assembly, there is a wheel differential lock mechanism that needs to be assembled online. The wheel differential lock mechanism is installed in the reducer housing, and it is installed in a deeper cavity with a small space. The installed parts include springs, shift forks, shift fork shafts and other smaller parts. During the installation process, the spring must first be installed from the orifice to the small spring hole in the deep cavity, and then the shift fork is installed. During the installation process, it is necessary to achieve mass production under the most economical state. Therefore, without changing the posture of the reducer assembly on the production line, it is necessary to urgently solve the following existing problems:

[0003] 1. Since the spring is located in a semi-open hole, the spring is easy to fall off during installation;

[0004] 2. At the same time, when installing the fork, the spring must be compressed to a certain space before the fork can be installed. However, it is very difficult to compress the spring in a narrow and deep cavity;

[0005] 3. After compressing the spring and installing the fork, the spring must not be misplaced. At the same time, the fork hole on the fork must be concentric (coaxial) with the spring to meet the requirements of installing the fork shaft;

[0006] The above problems are very prominent in the actual assembly process, affecting work efficiency and increasing labor intensity. Utility Model Content

[0007] Based on the above description, the utility model provides a deep cavity installation fork spring auxiliary device to solve the problem of difficult and low efficiency operation of installing the fork and spring in the deep cavity of the reducer assembly.

[0008] The utility model solves the above technical problems with the following technical solutions: A deep cavity mounted fork spring auxiliary device, comprising a device body, the outer periphery of which is provided with a workpiece positioning circular surface adapted to the mounting hole on the reducer housing;

[0009] A spring positioning column is provided at one end of the device body, the spring positioning column is a semi-cylindrical column, and the interface between the spring positioning column and the workpiece positioning circular surface is set as a spring limiting surface;

[0010] A shift fork mounting surface is provided along the side plane of the spring positioning column, and the interface between the shift fork mounting surface and the workpiece positioning circular surface is set as a shift fork limiting surface.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the axis center of the workpiece positioning circular surface is coaxially arranged with the axis center of the spring positioning column.

[0013] Furthermore, the radial dimension of the cross section of the spring positioning column is smaller than the radial dimension of the cross section of the workpiece positioning circular surface.

[0014] Furthermore, the fork mounting surface is arranged on an extended surface of the side plane of the spring positioning column.

[0015] Furthermore, a handle is provided on one end of the device body away from the spring positioning column.

[0016] Furthermore, the outer surface of the handle is provided with anti-slip patterns.

[0017] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: the utility model provides a deep-cavity installation fork spring auxiliary device, which can quickly and reliably install the spring online and prevent the spring from falling out during the installation process, and can compress the spring, install the fork, and ensure that the fork hole, the spring hole and the installation hole of the reducer housing are concentric, which can greatly improve the working efficiency, improve the assembly accuracy, and greatly reduce the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A front view and a top view of a deep cavity mounted fork spring auxiliary device provided by an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the deep cavity mounted fork spring auxiliary device provided in an embodiment of the utility model cooperating with the reducer housing.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Device body, 11. Workpiece positioning circular surface, 12. Spring positioning column, 13. Spring limiting surface, 14. Fork mounting surface, 15. Fork limiting surface, 16. Handle, 2. Spring, 3. Fork, 4. Reducer housing. DETAILED DESCRIPTION

[0022] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] It will be appreciated that spatial relationship terms such as "under", "beneath", "below", "under", "above", "above", etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, the element or feature described as "under other elements" or "under it" or "under it" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0025] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0026] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0027] like Figure 1 (a) is a front view of a deep cavity mounted fork spring auxiliary device provided by an embodiment of the utility model, Figure 1 (b) is a top view of a deep cavity mounted fork spring auxiliary device provided by an embodiment of the utility model, Figure 2 It is a schematic diagram showing the cooperation between the deep cavity installation fork spring auxiliary device and the reducer housing 4 during the installation process of the spring 2 and the fork 3 provided by the embodiment of the utility model.

[0028] Combination Figure 1 (a) Figure 1 (b) and Figure 2As shown, the present embodiment provides a deep cavity mounted fork spring auxiliary device, comprising a device body 1, the outer periphery of the device body 1 is provided with a workpiece positioning circular surface 11 adapted to the mounting hole on the reducer housing 4, the workpiece positioning circular surface 11 surrounds the outer periphery of the device body 1 and is arranged in a cylindrical surface;

[0029] A spring positioning column 12 is provided at one end of the device body 1, and the radial dimension of the spring positioning column 12 is smaller than the inner diameter of the spring 2 and the inner diameter of the fork 3 hole on the fork 3. The spring positioning column 12 is a semi-cylinder, and the cross-section of the spring positioning column 12 is a semi-circular surface structure. The arc surface of the spring positioning column 12 plays the function of supporting the spring 2 and positioning the spring 2. The spring limiting surface 13 is to ensure that during the installation of this device, the spring positioning column 12 can compress the spring 2 in the deep cavity without falling off; the interface between the spring positioning column 12 and the workpiece positioning circular surface 11 is set as the spring limiting surface 13, and the spring limiting surface 13 is used to limit the extreme position of the spring 2 during the installation of the spring 2;

[0030] A fork mounting surface 14 is provided along the side plane of the spring positioning column 12, and the interface between the fork mounting surface 14 and the workpiece positioning circular surface 11 is set as a fork limiting surface 15. The side plane of the spring positioning column 12 and the fork mounting surface 14 both provide a mounting position for the fork 3 and radially position the fork 3, while the fork limiting surface 15 is used to ensure that there is sufficient space in the axial direction to install the fork 3 during the compression process of the spring 2, that is, to control the compression degree of the spring 2 in the axial direction.

[0031] It can be understood that, in the process of installing the spring 2 and the shift fork 3 on the reducer housing 4, the spring 2 is first sleeved on the spring positioning column 12 of the device body 1, so that the arc surface of the spring positioning column 12 fits with the inner circular surface of the spring 2, and the side plane of the spring positioning column 12 faces downward, and then the spring positioning column 12 of the device body 1 and the spring 2 are extended into the installation deep cavity of the reducer housing 4 through the installation hole on the reducer housing 4. After aligning the spring 2 with the installation position, the device body 1 is continuously pushed forward to compress the spring 2 through the spring limiting surface 13; when the spring 2 is compressed into place, the shift fork installation surface 14 of the device body 1 is aligned with the open hole (for example, Figure 2 The lower opening in the perspective of the shift fork 3 is inserted into the mounting deep cavity of the reducer housing 4 through the opening of the reducer housing 4, and the mounting end of the shift fork 3 is contacted with the shift fork mounting surface 14. The positions of the shift fork 3 and the device body 1 are adjusted so that the shift fork 3 is contacted with the shift fork limiting surface 15. The spring positioning column 12 is withdrawn from the mounting deep cavity of the reducer housing 4, so that the spring positioning column 12 leaves the spring 2. Since part of the structure of the shift fork 3 still compresses the spring 2, the spring 2 can be compressed along the shift fork 3. Figure 2Continue to push the fork 3 in the upward direction to align the axis of the fork 3 hole on the fork 3 with the axis of the spring 2; then pass the spring positioning column 12 of the device body 1 through the fork 3 hole and the spring 2 to ensure the coaxiality of the fork 3 hole and the spring 2. After adjusting the coaxiality of the spring 2 and the fork 3 hole, withdraw the device body 1 from the mounting hole of the reducer housing 4 to complete the assembly process. After assembly, the spring 2, the fork 3 hole on the fork 3, and the mounting hole of the reducer housing 4 are coaxial, which realizes the operation of quickly installing the spring 2 and the fork 3 in the deep mounting cavity of the reducer housing 4 online, ensures the assembly accuracy, meets the needs of mass production, and is simple to assemble, reduces labor intensity, and improves work efficiency.

[0032] In one possible implementation manner, the axis of the workpiece positioning circular surface 11 is coaxially arranged with the axis of the spring positioning column 12 .

[0033] The function of the workpiece positioning circular surface 11 is mainly to cooperate with the mounting hole of the reducer housing 4 during the installation process to ensure that the spring 2 positioned by this device is coaxial with the mounting hole. Therefore, the workpiece positioning circular surface 11 and the spring positioning column 12 are coaxially arranged to obtain this technical effect.

[0034] In one possible implementation manner, a radial dimension of a cross section of the spring positioning column 12 is smaller than a radial dimension of a cross section of the workpiece positioning circular surface 11 .

[0035] During the installation of the spring 2, the spring positioning column 12 is firstly passed through the mounting hole of the reducer housing 4 after the spring 2 is sleeved thereon, and then the workpiece positioning circular surface 11 penetrates the mounting hole of the reducer housing 4. Therefore, the maximum radial dimension of the spring positioning column 12 cannot be greater than the inner diameter of the spring 2 and smaller than the radial dimension of the workpiece positioning circular surface 11.

[0036] In one possible implementation, the fork mounting surface 14 is disposed on an extension surface of the side plane of the spring positioning column 12. The fork mounting surface 14 is used to position the fork 3 when installing the fork 3, and the side plane of the spring positioning column 12 smoothly transitions to the fork mounting surface 14. After the fork 3 is positioned during the installation process (the coaxiality of the fork 3 and the spring 2 has not been adjusted at this time), when the spring positioning column 12 is withdrawn from the spring 2, the side plane of the spring positioning column 12 can be prevented from interfering with the fork 3, so that the withdrawal process of the spring positioning column 12 is unobstructed and smoother.

[0037] In one possible implementation manner, a handle 16 is provided on the end of the device body 1 away from the spring positioning column 12 .

[0038] The handle 16 is always located outside the reducer housing 4 , and the handle 16 is convenient for an operator to operate the device, for example, to push in or withdraw the device body 1 through the handle 16 .

[0039] In one possible implementation manner, the outer surface of the handle 16 is provided with anti-slip grooves or an anti-slip layer to prevent the device from slipping and deflecting during the operation of the device to install the spring 2 and the fork 3, thereby affecting the positioning and limiting of the fork 3.

[0040] The deep cavity installation fork spring auxiliary device provided by the utility model has the following advantages compared with other operation methods:

[0041] 1. The operation mode of the utility model can perform online operation without changing the posture of the reducer assembly on the reducer assembly production line;

[0042] 2. The device of the utility model is small and light, has reliable positioning, high operating efficiency, and low labor intensity. One operator can quickly complete the work content, which is very suitable for the operation needs of mass production.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep cavity mounted fork spring auxiliary device, characterized in that: It comprises a device body (1), the outer periphery of which is provided with a workpiece positioning circular surface (11) adapted to the mounting hole on the reducer housing (4); A spring positioning column (12) is provided at one end of the device body (1), the spring positioning column (12) is a semi-cylinder, and the interface between the spring positioning column (12) and the workpiece positioning circular surface (11) is set as a spring limiting surface (13); A shift fork mounting surface (14) is provided along the side plane of the spring positioning column (12), and the interface between the shift fork mounting surface (14) and the workpiece positioning circular surface (11) is set as a shift fork limiting surface (15).

2. A deep cavity mounted fork spring auxiliary device according to claim 1, characterized in that: The axis center of the workpiece positioning circular surface (11) is coaxially arranged with the axis center of the spring positioning column (12).

3. A deep cavity mounted fork spring auxiliary device according to claim 1, characterized in that: The radial dimension of the cross section of the spring positioning column (12) is smaller than the radial dimension of the cross section of the workpiece positioning circular surface (11).

4. A deep cavity mounted fork spring auxiliary device according to claim 1, characterized in that: The shift fork mounting surface (14) is arranged on an extended side plane of the spring positioning column (12).

5. The deep cavity mounted fork spring auxiliary device according to claim 1, characterized in that: A handle (16) is provided on the end of the device body (1) that is away from the spring positioning column (12).

6. A deep cavity mounted fork spring auxiliary device according to claim 5, characterized in that: The outer surface of the handle (16) is provided with anti-slip patterns.

Images