Suspension spring flapping test tool

Abstract

The utility model relates to a suspension spring flapping test tool which comprises a base, a rocker arm, a movable seat and an upper pressing plate, a connector used for being connected with a power source is installed on the lower portion of the base, and a plane supporting head used for supporting the bottom of a suspension spring is installed on the upper portion of the base. The tail of the rocker arm is hinged with the base; the upper part of the movable seat is rotatably provided with a first bearing, and the lower part of the movable seat is provided with a curved surface supporting head for supporting the top of a suspension spring; the upper pressing plate is connected with a power source, a guide rail groove is formed in the bottom of the upper pressing plate, and the first bearing rolls along the guide rail groove. The device has the beneficial effects that the suspension spring can be conveniently disassembled and assembled between the plane supporting head and the curved surface supporting head, and the angle between the curved surface supporting head and the plane supporting head can be conveniently adjusted, so that the suspension spring can be debugged and verified from different angles, and the stress change condition of the suspension spring in the moving process of a real vehicle can be effectively simulated.

Description

Technical Field

[0001] This utility model relates to the field of suspension spring testing technology, and in particular to a suspension spring tapping test fixture. Background Technology

[0002] With the trend towards lightweight vehicles, suspension springs are also becoming increasingly lightweight, leading to higher stress requirements. To ensure the performance of high-stress suspension springs, we need to test and verify them at different angles during production. Currently, dynamic simulation of suspension springs requires multiple sets of specialized tooling, and observation and measurement cannot be performed while the process is paused or intermittent. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned problems existing in the prior art and to provide a suspension spring tapping test fixture.

[0004] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0005] A suspension spring impact test fixture, comprising:

[0006] The base has a connector for connecting to a power source installed at its lower part and a planar support head for supporting the bottom of the suspension spring installed at its upper part.

[0007] A rocker arm, the tail of which is hinged to the base;

[0008] The movable seat is hinged to the head of the rocker arm. A first bearing is rotatably mounted on the upper part of the movable seat, and a curved support head for supporting the top of the suspension spring is mounted on the lower part of the movable seat.

[0009] The upper pressure plate is connected to the power source, and a guide rail groove is provided at the bottom of the upper pressure plate, along which the first bearing rolls.

[0010] The base includes a rectangular base plate and two symmetrical support plates. The two support plates are vertically installed at the top of the tail of the base plate, and a limiting shaft for controlling the distance between the two support plates is installed between them. The connector is installed at the bottom of the head of the base plate, and the planar support head is installed at the top of the head of the base plate.

[0011] The rocker arm includes a long, narrow arm body and a U-shaped fork. The front end of the arm body is fixedly connected to the middle of the rear end of the fork. A fixed shaft is fixedly connected to each side of the rear end of the arm body. A second bearing is installed on the upper part of each of the two support plates. The fixed shaft is interference-fitted into the inner ring of the second bearing.

[0012] The arm body and the arm fork form an angle of 160.02°.

[0013] The movable base includes a rectangular base plate, a movable mounting plate, and an annular raised block. A fixed mounting plate is vertically fixed to the top of the base plate. The movable mounting plate is vertically mounted on the top of the base plate and is parallel to the fixed mounting plate. Two bearing mounting shafts are installed between the movable mounting plate and the fixed mounting plate, and at least one first bearing is rotatably mounted on each bearing mounting shaft. Two parallel hinge blocks are vertically fixed to the bottom of the base plate. Each hinge block is hinged to the head of the arm fork via a hinge shaft. The raised block is installed in the middle of the bottom of the base plate, and the curved support head is installed at the bottom of the raised block.

[0014] The guide rail groove includes a first slope section, a flat section, and a second slope section connected in sequence. The angle between the flat section and the first slope section is 178°, and the angle between the flat section and the second slope section is 176.2°.

[0015] The planar support head is provided with an annular support plane that supports the bottom of the suspension spring; the curved support head is provided with a spiral support surface that supports the top of the suspension spring.

[0016] The connector head is coaxial with the planar support head.

[0017] The beneficial effects of this utility model are: a flat support head is installed on the base, and a curved support head is installed on the movable seat, so that the two ends of the rocker arm are respectively hinged to the movable seat and the base. First, it is convenient to disassemble and assemble the suspension spring between the flat support head and the curved support head. Second, it is convenient to adjust the angle between the curved support head and the flat support head, so as to realize the adjustment and verification of the suspension spring from different angles.

[0018] An upper pressure plate with a guide rail groove is set up, and a first bearing is rotatably installed on the movable seat. Through the rolling cooperation between the first bearing and the guide rail groove, the upper pressure plate can apply pressure to the first bearing to adjust the angle of the curved support head, thereby adjusting the angle of the suspension spring, effectively simulating the force change of the suspension spring during the actual vehicle movement. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of the suspension spring impact test fixture observed from above the side in this utility model;

[0021] Figure 2This is a side view of the planar structure of the suspension spring impact test fixture in this utility model;

[0022] Figure 3 This is a frontal planar structural schematic diagram of the suspension spring impact test fixture in this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the rocker arm in this utility model;

[0024] Figure 5 This is a frontal planar structural diagram of the movable seat in this utility model;

[0025] Figure 6 This is a schematic diagram of the planar structure of the upper pressure plate in this utility model, viewed from below.

[0026] Figure 7 yes Figure 6 A schematic diagram of the ZZ-direction structure;

[0027] Figure 8 This is a schematic diagram of the connector structure in this utility model;

[0028] Figure 9 This is a schematic diagram of the planar support head in this utility model;

[0029] Figure 10 This is a schematic diagram of the curved support head in this utility model;

[0030] The numbers in the diagram are as follows: base 1, bottom plate 11, support plate 12, and limiting shaft 13.

[0031] Rocker arm 2, arm body 21, arm fork 22, fixed shaft 23;

[0032] Movable seat 3, base plate 31, movable mounting plate 32, shim block 33, fixed mounting plate 34, bearing mounting shaft 35, hinge block 36;

[0033] Upper pressure plate 4, guide rail groove 41, first slope section 411, flat section 412, second slope section 413;

[0034] Connector 5;

[0035] Planar support head 6, support plane 61;

[0036] First bearing 7;

[0037] Curved support head 8, support curved surface 81;

[0038] Second bearing 9. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] like Figures 1 to 10 As shown, a suspension spring impact test fixture includes a base 1, a rocker arm 2, a movable seat 3, and an upper pressure plate 4. A first bearing 7 is rotatably mounted on the upper part of the movable seat 3.

[0041] The base 1 includes a rectangular base plate 11 and two symmetrical support plates 12. The two support plates 12 are vertically installed at the top end of the tail of the base plate 11, and a limiting shaft 13 for controlling the distance between the two support plates 12 is installed between them.

[0042] The lower part of the base 1 is equipped with a connector 5 for connecting to a power source, and the upper part of the base 1 is equipped with a flat support head 6 for supporting the bottom of the suspension spring. Specifically, the connector 5 is installed at the bottom of the head of the base plate 11, and the flat support head 6 is installed at the top of the head of the base plate 11.

[0043] The planar support head 6 is provided with an annular support plane 61 that supports the bottom of the suspension spring. Furthermore, the connector 5 is coaxial with the planar support head 6.

[0044] The rocker arm 2 includes a long, narrow arm body 21 and a U-shaped fork 22. The front end of the arm body 21 is fixedly connected to the middle of the rear end of the fork 22, forming an angle of 160.02° between the arm body 21 and the fork 22. The rear end of the rocker arm 2 is hinged to the base 1. Specifically, a fixed shaft 23 is fixedly connected to each side of the rear end of the arm body 21, and a second bearing 9 is installed on the upper part of each of the two support plates 12. The fixed shaft 23 is interference-fitted into the inner ring of the second bearing 9.

[0045] The movable base 3 includes a rectangular base plate 31, a movable mounting plate 32, and an annular shim block 33. A fixed mounting plate 34 is vertically fixed to the top of the base plate 31. The movable mounting plate 32 is vertically mounted on the top of the base plate 31. The movable mounting plate 32 is parallel to the fixed mounting plate 34. Two bearing mounting shafts 35 are installed between the movable mounting plate 32 and the fixed mounting plate 34. At least one first bearing 7 is rotatably mounted on each bearing mounting shaft 35.

[0046] In this embodiment, two first bearings 7 are rotatably mounted on each bearing mounting shaft 35.

[0047] The movable seat 3 is hinged to the head of the rocker arm 2. Specifically, two parallel hinge blocks 36 are vertically fixed to the bottom end of the base plate 31. Each hinge block 36 is hinged to the head of the arm fork 22 through a hinge shaft. A curved support head 8 for supporting the top of the suspension spring is installed at the lower part of the movable seat 3. Specifically, the pad block 33 is installed at the middle of the bottom end of the base plate 31, and the curved support head 8 is installed at the bottom end of the pad block 33.

[0048] The curved support head 8 is provided with a spiral support surface 81 that supports the top of the suspension spring.

[0049] The upper pressure plate 4 is connected to the power source. The bottom of the upper pressure plate 4 is provided with a guide rail groove 41, and the first bearing 7 rolls along the guide rail groove 41. The guide rail groove 41 includes a first slope section 411, a flat section 412, and a second slope section 413 connected in sequence. The included angle between the flat section 412 and the first slope section 411 is 178°, and the included angle between the flat section 412 and the second slope section 413 is 176.2°.

[0050] A flat support head is installed on the base, and a curved support head is installed on the movable seat, so that the two ends of the rocker arm are hinged to the movable seat and the base respectively. This facilitates the installation and removal of the suspension spring between the flat support head and the curved support head, and also facilitates the adjustment of the angle between the curved support head and the flat support head, so as to achieve the adjustment and verification of the suspension spring from different angles.

[0051] An upper pressure plate with a guide rail groove is set up, and a first bearing is rotatably installed on the movable seat. Through the rolling cooperation between the first bearing and the guide rail groove, the upper pressure plate can apply pressure to the first bearing to adjust the angle of the curved support head, thereby adjusting the angle of the suspension spring, effectively simulating the force change of the suspension spring during the actual vehicle movement.

[0052] By observing the changes in the suspension spring at different locations and whether the fit between the suspension spring and the rubber pad meets customer requirements, defective products can be screened out.

[0053] By mimicking the actual motion trajectory of suspension springs during vehicle assembly, the accuracy of the simulation can be effectively verified, avoiding errors between the simulation software and the actual vehicle that could lead to spring failure. In the early stages of trial production, this tooling can effectively mitigate most of the risks associated with interference during actual vehicle assembly.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A suspension spring impact test fixture, characterized in that, include: The base has a connector for connecting to a power source installed at its lower part and a planar support head for supporting the bottom of the suspension spring installed at its upper part. A rocker arm, the tail of which is hinged to the base; The movable seat is hinged to the head of the rocker arm. A first bearing is rotatably mounted on the upper part of the movable seat, and a curved support head for supporting the top of the suspension spring is mounted on the lower part of the movable seat. The upper pressure plate is connected to the power source, and a guide rail groove is provided at the bottom of the upper pressure plate, along which the first bearing rolls.

2. The suspension spring impact test fixture according to claim 1, characterized in that: The base includes a rectangular base plate and two symmetrical support plates. The two support plates are vertically installed at the top of the tail of the base plate, and a limiting shaft for controlling the distance between the two support plates is installed between them. The connector is installed at the bottom of the head of the base plate, and the planar support head is installed at the top of the head of the base plate.

3. The suspension spring impact test fixture according to claim 2, characterized in that: The rocker arm includes a long, narrow arm body and a U-shaped fork. The front end of the arm body is fixedly connected to the middle of the rear end of the fork. A fixed shaft is fixedly connected to each side of the rear end of the arm body. A second bearing is installed on the upper part of each of the two support plates. The fixed shaft is interference-fitted into the inner ring of the second bearing.

4. The suspension spring impact test fixture according to claim 3, characterized in that: The arm body and the arm fork form an angle of 160.02°.

5. The suspension spring impact test fixture according to claim 3, characterized in that: The movable base includes a rectangular base plate, a movable mounting plate, and an annular raised block. A fixed mounting plate is vertically fixed to the top of the base plate. The movable mounting plate is vertically mounted on the top of the base plate and is parallel to the fixed mounting plate. Two bearing mounting shafts are installed between the movable mounting plate and the fixed mounting plate, and at least one first bearing is rotatably mounted on each bearing mounting shaft. Two parallel hinge blocks are vertically fixed to the bottom of the base plate. Each hinge block is hinged to the head of the arm fork via a hinge shaft. The raised block is installed in the middle of the bottom of the base plate, and the curved support head is installed at the bottom of the raised block.

6. The suspension spring impact test fixture according to claim 1, characterized in that: The guide rail groove includes a first slope section, a flat section, and a second slope section connected in sequence. The angle between the flat section and the first slope section is 178°, and the angle between the flat section and the second slope section is 176.2°.

7. The suspension spring impact test fixture according to claim 1, characterized in that: The planar support head is provided with an annular support plane that supports the bottom of the suspension spring; the curved support head is provided with a spiral support surface that supports the top of the suspension spring.

8. The suspension spring impact test fixture according to claim 1, characterized in that: The connector is coaxial with the planar support head.

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