Spiral spring assembly tool

Abstract

The utility model discloses a spiral spring assembly tool which comprises an annular synthetic fiber fastening belt I, a sliding nut, a positive and negative screw rod and an annular synthetic fiber fastening belt II. When the spiral spring assembling tool is used, the two sliding nuts are installed on the positive and negative screw rods firstly, and the two ends of the annular synthetic fiber fastening belt I are connected with a steel wire at the large pitch position of the spiral spring and the sliding nut at the upper end correspondingly; one end of an annular synthetic fiber fastening belt II is connected with a sliding nut at the lower end, the other end of the annular synthetic fiber fastening belt II bypasses a steel wire at the large-pitch position of the other corresponding side of the spiral spring from the lower portion of the spring to be connected, compression of the spiral spring can be achieved by screwing the positive and negative screws, and the assembling purpose is achieved. Compared with a traditional mode of assembling the spiral spring through a fastening belt, the spiral spring assembling tool is more labor-saving in use, manpower resource occupation is reduced, the assembling time is shortened, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of chassis suspension device assembly, specifically to a helical spring assembly fixture. Background Technology

[0002] In the chassis suspension system of a certain vehicle model, the coil spring needs to be compressed to a certain displacement during installation to meet the assembly requirements. Because the upper and lower end faces of the coil spring require the installation of upper and lower spring brackets, it is impossible to use end face loading to compress the spring; the only option is to apply force to the coil spring's wire. However, the wire is very smooth, the spring pitch is small, making application difficult. One side of the coil spring's installation position is occupied by the suspension arm, limiting the operating space. In existing technology, during suspension assembly, three fastening straps are used to apply pressure at three evenly distributed points to compress the spring to a certain length. Due to the limited installation space on one side, one fastening strap interferes with the suspension arm, preventing the coil spring from being installed. This necessitates removing one fastening strap. In this case, the spring is subjected to uneven restraint force, causing the spring end face to tilt to a certain extent. This condition makes assembly difficult, as the spring end face is prone to interference. Furthermore, using fastening straps to compress the coil spring results in high labor intensity and low efficiency. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a helical spring assembly fixture.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A helical spring assembly fixture includes a fastening band I, a sliding nut, a positive and negative screw, and a fastening band II. Two sliding nuts are installed on the positive and negative screw. The two ends of the fastening band I are respectively connected to the steel wire at the large pitch of the helical spring and the upper sliding nut. One end of the fastening band II is connected to the lower sliding nut, and the other end passes under the spring to the corresponding large pitch on the other side of the helical spring and is connected to the steel wire.

[0006] As a preferred embodiment of the above scheme, both the fastening band I and the fastening band II are annular synthetic fiber fastening bands.

[0007] As a preferred embodiment of the above scheme, the two sliding nuts are respectively a clockwise rotating nut and a counterclockwise rotating nut.

[0008] As a preferred embodiment of the above solution, the sliding nut includes a nut portion and a connecting portion. The nut portion and the positive and negative screws form a sliding pair. The connecting portion is integrally provided on the outer wall of the nut portion and is connected to the fastening band.

[0009] As a preferred embodiment of the above solution, a rotating sleeve is installed on the connecting part.

[0010] As a preferred embodiment of the above solution, a guide rod is integrally provided on the rotating sleeve, and the guide rod slides along the helical spring.

[0011] As a preferred embodiment of the above solution, the positive and negative screws are fitted with protective sleeves to prevent the fastening band from being scratched during rotation.

[0012] As a preferred embodiment of the above solution, the protective sleeve is fixedly connected to the sliding nut.

[0013] As a preferred embodiment of the above scheme, the positive and negative screws include an upper screw and a lower screw, with the lower end of the upper screw connected to the lower screw, and the rotation direction of the upper screw being opposite to that of the lower screw.

[0014] Due to the above structure, the beneficial effects of this utility model are as follows:

[0015] Compared with the traditional method of assembling coil springs using fastening straps, the coil spring assembly fixture of this application is more labor-saving, reduces manpower consumption, shortens assembly time, and greatly improves production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is an assembly drawing of the present utility model;

[0018] Figure 2 This is a schematic diagram of the sliding nut structure of this utility model;

[0019] Figure 3 for Figure 2 Side view;

[0020] Figure 4 for Figure 2 Top view. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] like Figures 1 to 4As shown, this embodiment provides a helical spring assembly fixture, including a fastening band I1, a sliding nut 2, a positive and negative screw 3, and a fastening band II4. Two sliding nuts 2 are installed on the positive and negative screw 3. The two ends of the fastening band I1 are respectively connected to the steel wire at the large pitch of the helical spring 10 and the upper sliding nut 2. One end of the fastening band II4 is connected to the lower sliding nut 2, and the other end goes around from the bottom of the spring to the corresponding large pitch on the other side of the helical spring 10 and is connected to the steel wire.

[0023] In this embodiment, the fastening band I1 and fastening band II4 are annular synthetic fiber fastening bands.

[0024] In this embodiment, the two sliding nuts 2 are a clockwise rotating nut and a counterclockwise rotating nut, respectively. Each sliding nut 2 includes a nut portion 21 and a connecting portion 22. The nut portion 21 forms a sliding pair with the clockwise and counterclockwise screws 3. The connecting portion 22 is integrally formed (possibly welded) on the outer wall of the nut portion 21 and is connected to a fastening band. A rotating sleeve 23 is mounted on the connecting portion 22. A guide rod 24 is integrally formed on the rotating sleeve 23 and slides along the helical spring.

[0025] In this embodiment, the reversible screw 3 includes an upper screw and a lower screw, with the lower end of the upper screw connected to the lower screw. The rotation direction of the upper screw is opposite to that of the lower screw. A protective sleeve 5 is fitted onto the reversible screw 3 to prevent scratching the fastening band during rotation. Two protective sleeves 5 are provided; one (located at the bottom of the reversible screw 3) is fixedly connected to the sliding nut 2, while the other (located at the top of the reversible screw 3) is not fixed.

[0026] The working principle of the above structure:

[0027] When using the helical spring assembly fixture, first install the two sliding nuts 2 on the positive and negative screws 3. Connect both ends of the annular synthetic fiber fastening band I1 to the steel wire at the large pitch of the helical spring 10 and to the upper sliding nut 2 respectively. Connect one end of the annular synthetic fiber fastening band II4 to the lower sliding nut 2 and the other end to the steel wire at the corresponding large pitch on the other side of the helical spring 10 from below. Tightening the positive and negative screws 3 can compress the helical spring and achieve the assembly purpose.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A helical spring assembly fixture, characterized in that: It includes a fastening band I (1), a sliding nut (2), a positive and negative screw (3), and a fastening band II (4). Two sliding nuts (2) are installed on the positive and negative screw (3). The two ends of the fastening band I (1) are respectively connected to the steel wire at the large pitch of the helical spring (10) and the upper sliding nut (2). One end of the fastening band II (4) is connected to the lower sliding nut (2), and the other end goes around from the bottom of the spring to the corresponding large pitch on the other side of the helical spring (10) and is connected to the steel wire.

2. The helical spring assembly fixture according to claim 1, characterized in that: Both the fastening band I (1) and the fastening band II (4) are annular synthetic fiber fastening bands.

3. The helical spring assembly fixture according to claim 1, characterized in that: The two sliding nuts (2) are a clockwise rotating nut and a counterclockwise rotating nut, respectively.

4. The helical spring assembly fixture according to claim 1, characterized in that: The sliding nut (2) includes a nut part (21) and a connecting part (22). The nut part (21) and the positive and negative screws (3) form a sliding pair. The connecting part (22) is integrally provided on the outer wall of the nut part (21) and is connected to the fastening band.

5. A helical spring assembly fixture according to claim 4, characterized in that: A rotating sleeve (23) is installed on the connecting part (22).

6. The helical spring assembly fixture according to claim 5, characterized in that: A guide rod (24) is integrally provided on the rotating sleeve (23), and the guide rod (24) slides along the helical spring.

7. The helical spring assembly fixture according to claim 1, characterized in that: The positive and negative screws (3) are fitted with protective sleeves (5) to prevent the fastening band from being scratched during rotation.

8. A helical spring assembly fixture according to claim 7, characterized in that: The protective sleeve (5) is fixedly connected to the sliding nut (2).

9. A helical spring assembly fixture according to claim 1, characterized in that: The positive and negative screws (3) include an upper screw and a lower screw. The lower end of the upper screw is connected to the lower screw, and the direction of rotation of the upper screw is opposite to that of the lower screw.

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