Suspension spring detection tool

Abstract

The utility model relates to a kind of suspension spring detection tool, including upper bottom plate, upper positioning plate, lower bottom plate, multiple lower mould plate, upper positioning plate is installed in the bottom end of upper bottom plate with screw, the bottom end middle part of upper positioning plate is provided with spring upper positioning column, the side of spring upper positioning column is provided with spring positioning strip;The top of lower bottom plate is provided with N root socket column, the bottom of lower mould plate is provided with N socket groove, socket column is inserted into socket groove so that lower mould plate is installed on lower bottom plate, the top of lower mould plate is provided with inclined spring support surface and spring lower positioning column.Affirmative effect is: setting multiple lower mould plates with different inclined angles of spring support surface, and lower mould plate is assembled on lower bottom plate by the socket column and socket groove of pull-insert cooperation, according to the requirement of suspension spring eccentric and angle of deviation detection, corresponding specification lower mould plate is selected to be installed to lower bottom plate, simulate the state that the top of suspension spring is eccentric telescopic motion relative to its bottom.

Description

Technical Field

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

[0002] Before delivering suspension springs, we simulate their operation in a real vehicle to observe the changes in force on the springs and to promptly adjust and correct any problems that arise. This helps ensure product quality and better meet customer requirements for suspension spring quality.

[0003] The suspension spring lower support mechanism used in existing suspension spring testing machines provides planar support for the bottom of the suspension spring. When the suspension spring testing machine applies downward pressure to the suspension spring, the suspension spring can only move along its axial direction, which cannot simulate the state of the suspension spring moving eccentrically relative to the other end under actual use. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned problems in the existing technology and provide a suspension spring testing fixture.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A suspension spring testing fixture includes an upper base plate, an upper positioning plate, a lower base plate, and multiple lower templates. The upper positioning plate is installed at the bottom end of the upper base plate with screws. A downwardly protruding upper spring positioning post is provided at the middle of the bottom end of the upper positioning plate. A spring positioning strip is provided on one side of the upper spring positioning post, protruding outward along the radial direction of the spring positioning post.

[0007] The bottom plate has N upward-protruding sockets at its top, and the bottom of the lower template has N slots. The sockets are inserted into the slots to mount the lower template on the bottom plate. The top of the lower template has an inclined spring support surface and a spring lower positioning post. The inclination angles of the spring support surfaces of any two lower templates are not the same.

[0008] The inclination angle of the spring support surface is 0° to 17.056°.

[0009] The central axis of the lower positioning post of the spring is perpendicular to the spring support surface.

[0010] The top of the lower template is also provided with a spring positioning groove for positioning the lower end of the suspension spring.

[0011] The upper positioning post of the spring is interference-fitted with the top inner hole of the suspension spring, and a gap is reserved between the lower positioning post of the spring and the bottom inner hole of the suspension spring.

[0012] The beneficial effects of this utility model are: multiple lower templates with spring support surfaces having different inclination angles are set, and the lower templates are assembled on the lower base plate through plug-in and socket joints. According to the requirements of suspension spring eccentricity and eccentricity detection, the lower templates of the corresponding specifications are selected and installed on the lower base plate to simulate the state of the top of the suspension spring performing eccentric telescopic movement relative to its bottom, that is, the suspension spring performs telescopic movement in a bent state. Attached Figure Description

[0013] 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:

[0014] Figure 1 This is a schematic diagram of the suspension spring testing fixture in this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the lower base plate in this utility model;

[0016] Figure 3 This is a structural schematic diagram of lower template 1, lower template 2, lower template 3, lower template 4, and lower template 5 in this utility model;

[0017] The following are the labels in the diagram: Upper base plate 1, Upper positioning plate 2, Upper spring positioning post 21, Spring positioning strip 22, Lower base plate 3, Socket post 31, Socket slot 41, Spring support surface 42, Lower spring positioning post 43, Spring positioning groove 44, Lower template 1 4a, Lower template 2 4b, Lower template 3 4c, Lower template 4d, Lower template 5 4e. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] like Figures 1 to 3 As shown, a suspension spring testing fixture includes an upper base plate 1, an upper positioning plate 2, a lower base plate 3, and five lower templates (4a, 4b, 4c, 4d, 4e). The upper base plate 1 and the lower base plate 3 are respectively installed on the suspension spring testing machine with screws.

[0020] The upper positioning plate 2 is screwed to the bottom end of the upper base plate 1. A downward-protruding upper spring positioning post 21 is provided at the center of the bottom end of the upper positioning plate 2. A spring positioning strip 22 protrudes radially outward along one side of the upper spring positioning post 21. During testing, the top of the suspension spring is clamped onto the upper spring positioning post 21, and the upper end of the suspension spring abuts against the side of the spring positioning strip to ensure that the top of the suspension spring is always positioned consistently on the upper template.

[0021] The bottom plate 3 has three upward-protruding socket posts 31 at its top and three socket slots 41 at its bottom. The socket posts 31 are inserted into the socket slots 41 to install the lower template on the bottom plate 3, which facilitates quick replacement of the lower template.

[0022] The top of the lower template is provided with an inclined spring support surface 42 and a lower spring positioning post 43. The inclination angles of the spring support surfaces 42 of any two lower templates are not the same, and the central axis of the lower spring positioning post 43 is perpendicular to the spring support surface 42. The top of the lower template is also provided with a spring positioning groove 44 for positioning the lower end of the suspension spring. During testing, according to the requirements for testing the eccentricity and angle of the suspension spring, the lower template of the corresponding specification is selected and installed on the lower base plate. Then, the bottom of the suspension spring is fitted onto the lower spring positioning post 43, and the lower end of the suspension spring is locked in the spring positioning groove 44.

[0023] After the top and bottom of the suspension spring are installed, the suspension spring testing machine is turned on. The drive device on the suspension spring testing machine drives the upper positioning plate and upper template to move downward, applying downward pressure to the top of the suspension spring to simulate the working state of the suspension spring when it is installed on the vehicle and subjected to pressure, and to conduct a durability test.

[0024] The inclination angle of the spring support surface 42 is 0°~17.056°. Specifically, the five lower templates are lower template 1 4a, lower template 2 4b, lower template 3 4c, lower template 4d, and lower template 5 4e. Among them, the angle between the spring support surface of lower template 1 4a and the bottom end of the lower base plate 3 is 0°, the angle between the spring support surface of lower template 2 4b and the bottom end of the lower base plate 3 is 4.8°, the angle between the spring support surface of lower template 3 4c and the bottom end of the lower base plate 3 is 10.45°, the angle between the spring support surface of lower template 4d and the bottom end of the lower base plate 3 is 14.9°, and the angle between the spring support surface of lower template 5 4e and the bottom end of the lower base plate 3 is 17.056°.

[0025] The upper positioning post 21 of the spring is interference-fitted with the top inner hole of the suspension spring so that the top of the suspension spring can be clamped on the upper positioning post 21. When changing the lower template, the top of the suspension spring can be clamped on the upper positioning post 21 and will not fall off the upper positioning post 21 without the help of a worker. A gap is reserved between the lower positioning post 43 of the spring and the bottom inner hole of the suspension spring so that the bottom of the suspension spring can be separated from the lower positioning post 43 when changing the lower template.

[0026] 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 testing fixture, characterized in that: Includes an upper base plate, an upper positioning plate, a lower base plate, and multiple lower templates. The upper positioning plate is installed at the bottom of the upper base plate with screws. A downward protruding upper spring positioning post is provided at the middle of the bottom of the upper positioning plate. A spring positioning strip protruding outward along the radial direction of the upper spring positioning post is provided on one side of the upper spring positioning post. The bottom plate has N upward-protruding sockets at its top, and the bottom of the lower template has N slots. The sockets are inserted into the slots to mount the lower template on the bottom plate. The top of the lower template has an inclined spring support surface and a spring lower positioning post. The inclination angles of the spring support surfaces of any two lower templates are not the same.

2. The suspension spring testing fixture according to claim 1, characterized in that: The inclination angle of the spring support surface is 0°~17.056°.

3. The suspension spring testing fixture according to claim 1, characterized in that: The central axis of the lower positioning post of the spring is perpendicular to the spring support surface.

4. The suspension spring testing fixture according to claim 1, characterized in that: The top of the lower template is also provided with a spring positioning groove for positioning the lower end of the suspension spring.

5. The suspension spring testing fixture according to claim 1, characterized in that: The upper positioning post of the spring is interference-fitted with the top inner hole of the suspension spring, and a gap is reserved between the lower positioning post of the spring and the bottom inner hole of the suspension spring.

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