A fixture for testing the performance of shock absorber nodes

Abstract

This utility model provides a testing fixture for the node performance of a shock absorber, including a fixed base, a node clamp, a sliding rod assembly, and a lifting connecting seat. The node clamp can be installed on one side of the fixed base using either a horizontal or vertical installation method. The node clamp includes a detachably connected left clamp and a right clamp. A clamping hole is formed between the left and right clamps. The clamping hole is used to clamp a rubber sleeve for fixing the node. When the node is fixed in the clamping hole, both ends of the node extend out of the clamping hole. The sliding rod assembly includes a rod body, a sliding sleeve, and a connector. The connector is fixed to one end of the rod body and is used for fixed connection with both ends of the node. The sliding sleeve is slidably connected to the rod body. The lifting connecting seat is located above the sliding sleeve and is connected to the sliding sleeve through a rotating shaft. This design allows for the testing of the node's deflection or offset performance simply by changing the installation direction of the node clamp, saving costs and improving testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of testing fixture technology, and in particular to a testing fixture for the node performance of a shock absorber. Background Technology

[0002] Currently, in the rail transit sector, shock absorbers require performance testing of their joints during production. The joints are fitted with rubber sleeves, and it's necessary to test not only the offset between the joint and the sleeve under axial force but also the deflection between the joint and the bushing during rotation. Existing shock absorber joint performance testing involves using an auxiliary device to first fix the joint on the sample mounting platform of the testing equipment. Then, the load-bearing column of the testing equipment applies tension or compression to the joint, thus achieving load loading and ultimately completing the joint performance test. However, the joint testing equipment can only apply loads perpendicular to the joint, making it impossible to test the joint deflection performance. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a testing fixture for the node performance of a shock absorber to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A shock absorber node performance testing fixture includes a fixed base, a node clamp, a sliding rod assembly, and a lifting connecting seat. The node clamp can be installed on one side of the fixed base using either a horizontal or vertical installation method. The node clamp includes a detachably connected left clamp and a right clamp. A clamping hole is formed between the left and right clamps. The clamping hole is used to clamp a rubber sleeve for fixing the node. When the node is fixed in the clamping hole, both ends of the node extend out of the clamping hole. The sliding rod assembly includes a rod body, a sliding sleeve, and a connector. The connector is fixed to one end of the rod body and is used for fixed connection with both ends of the node. The sliding sleeve is slidably connected to the rod body. The lifting connecting seat is located above the sliding sleeve and is connected to the sliding sleeve via a rotating shaft.

[0006] Further description of this utility model: a cross-shaped slide rail is installed on the fixed base; the cross-shaped slide rail has a vertically arranged vertical groove and a horizontally arranged horizontal groove formed inside; the middle positions of the vertical groove and the horizontal groove are interconnected; the cross-section of the vertical groove and the horizontal groove is T-shaped; the node clamp also includes a locking screw, two sliders and two support columns; the two support columns are respectively arranged on the left side of the left clamping block; the two sliders are respectively installed in the vertical groove or the horizontal groove; the head of the locking screw touches the right side of the right clamping block, and the tail passes through the right clamping block, the left clamping block and the support column in sequence before extending into the cross-shaped slide rail and being threadedly connected to the slider.

[0007] Further description of this utility model: the fixing base includes an L-shaped bracket, a triangular reinforcing plate, and a mounting plate; the L-shaped bracket includes a crossbeam and a vertical beam connected to the upper rear end of the crossbeam; the triangular reinforcing plate is fixed between the crossbeam and the vertical beam; the mounting plate is fixed on the right side of the upper part of the vertical beam; the cross slide rail is fixed on the right side of the mounting plate.

[0008] In a further description of this utility model, the bottom of the lifting connecting seat is provided with two first ear plates distributed front and rear; a second ear plate is connected to the sliding sleeve; the second ear plate is located between the two first ear plates; the rotating shaft is mounted on the first ear plate and rotatably connected to the second ear plate.

[0009] The beneficial effects of this utility model are as follows:

[0010] When the node clamp of this design is horizontally installed on one side of the fixed base, the node held by the node clamp is also in a horizontal state. The lifting connecting seat is connected to the load loading column of the testing equipment. The load loading column applies a vertical force to the lifting connecting seat. When the lifting connecting seat moves up and down, it will cause the rod to swing. The swing of the rod will cause the node to rotate. This state is used to test the deflection performance of the node. When the node clamp is vertically installed on one side of the fixed base, the node held by the node clamp is in a vertical state. When the lifting connecting seat moves up and down, it will cause the rod to move up and down. The rise and fall of the rod will cause the node to move axially relative to the rubber sleeve, thereby detecting the offset performance of the node. This fixture can test the deflection performance and offset performance of the node simply by changing the installation method, saving costs and improving testing efficiency. Attached Figure Description

[0011] Figure 1 This is an overall structural diagram of the node clamping seat of this utility model after it is installed vertically and the node is clamped.

[0012] Figure 2 This is an overall structural diagram of the node clamping seat of this utility model after horizontal installation and clamping of the node;

[0013] Figure 3 This is a connection structure diagram of the slide rod assembly and the lifting connecting seat of this utility model;

[0014] Figure 4 This is a structural diagram showing the connection between the node clamp and the cross-shaped slide rail of this utility model. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] like Figure 1-4As shown, a shock absorber node performance testing fixture includes a fixed base 1, a node clamp 2, a slide rod assembly 3, and a lifting connecting base 4. The node clamp 2 can be installed on one side of the fixed base 1 using either a horizontal or vertical installation method. The node clamp 2 includes a detachably connected left clamping block 21 and a right clamping block 22. A clamping hole 201 is formed between the left clamping block 21 and the right clamping block 22. The clamping hole 201 is used to clamp the rubber sleeve 101 of the fixed node 100. When the node 100 is fixed in the clamp... When the node 100 is in hole 201, both ends of the node 100 extend outside the clamping hole 201; the sliding rod assembly 3 includes a rod body 31, a sliding sleeve 32, and a connector 33; the connector 33 is fixed to one end of the rod body 31 and is used to fix it to both ends of the node 100. The connector 33 is U-shaped and both ends are bent outward to form a connecting part 331. The connecting part 331 is locked to the node 100 by screws. The right side of the connector 33 has a connecting shaft 332, and the connecting shaft 332 has an internal threaded hole. The rod body 31 and the internal threaded hole are connected by threads. The connection is fixed; the sliding sleeve 32 is slidably connected to the rod 31; the lifting connecting seat 4 is located above the sliding sleeve 32 and is connected to the sliding sleeve 32 through the rotating shaft 401; when the node clamp 2 is horizontally installed on one side of the fixed seat 1, the node 100 clamped by the node clamp 2 is also in a horizontal state. The lifting connecting seat 4 is connected to the load loading column of the test equipment. The load loading column applies a vertical force to the lifting connecting seat 4. When the lifting connecting seat 4 rises and falls, it will drive the rod 31 to swing. The swing of the rod 31 drives the node 100 to swing. With zero rotation, this state is used to test the deflection performance of node 100. When node clamp 2 is vertically installed on one side of fixed seat 1, node 100 held by node clamp 2 is in a vertical state. When lifting connecting seat 4 is raised or lowered, it will drive rod 31 to rise or fall. The rise or fall of rod 31 will drive node 100 to move axially relative to rubber sleeve 101, thereby detecting the offset performance of node 100. This fixture can detect the deflection performance and offset performance of node 100 by simply changing the installation method, saving costs and improving testing efficiency.

[0017] A cross-shaped slide rail 5 is installed on the fixed base 1; the cross-shaped slide rail 5 has a vertically arranged vertical slide groove 51 and a horizontally arranged horizontal slide groove 52 formed inside; the middle positions of the vertical slide groove 51 and the horizontal slide groove 52 are interconnected; the cross-sections of the vertical slide groove 51 and the horizontal slide groove 52 are both T-shaped; the node clamp 2 also includes a locking screw 23, two sliders 24 and two support columns 25; the two support columns 25 are respectively arranged on the left side of the left clamp 21; the two sliders 24 are respectively installed in the vertical slide groove 51 or the horizontal slide groove 52; the head of the locking screw 23 touches the left side of the left clamp 21. On the right side of the right clamping block 22, the tail passes through the right clamping block 22, the left clamping block 21, and the support column 25 in sequence before extending into the cross slide rail 5 and threadedly connecting with the slider 24. After loosening the locking screw 23, the left clamping block 21 and the right clamping block 22 are released, allowing the node 100 to be inserted or removed. The slider 24 can also slide within the cross slide rail 5 to adjust its position or be removed to change its direction. After adjusting the installation direction and position, the locking screw 23 is tightened again, and the left clamping block 21 and the right clamping block 22 clamp the rubber sleeve 101 of the node 100. The slider 24 and the support column 25 are also pressed against the cross slide rail 5 to achieve the locking function.

[0018] The fixed base 1 includes an L-shaped bracket 11, a triangular reinforcing plate 12, and a mounting plate 13; the L-shaped bracket 11 includes a crossbeam 111 and a vertical beam 112 connected to the upper rear end of the crossbeam 111; the triangular reinforcing plate 12 is fixed between the crossbeam 111 and the vertical beam 112; the mounting plate 13 is fixed to the upper right side of the vertical beam 112; the cross slide rail 5 is fixed to the right side of the mounting plate 13, providing a stable structure. The cross slide rail 5 is installed at the upper position, with space reserved on its right side for installing the mounting node clamp 2, and other components such as the slide rod assembly 3.

[0019] In this design, the bottom of the lifting connecting seat 4 is provided with two first ear plates 41 distributed front and back; the sliding sleeve 32 is connected to a second ear plate 321; the second ear plate 321 is located between the two first ear plates 41; the rotating shaft 401 is installed on the first ear plate 41 and is rotatably connected to the second ear plate 321.

[0020] The above description does not limit the technical scope of this invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.

Claims

1. A fixture for testing the performance of shock absorber nodes, characterized in that: The system includes a fixed base, a node clamp, a sliding rod assembly, and a lifting connecting seat. The node clamp can be installed on one side of the fixed base using either a horizontal or vertical installation method. The node clamp includes a detachably connected left clamp and a right clamp. A clamping hole is formed between the left and right clamps. The clamping hole is used to clamp a rubber sleeve for fixing the node. When the node is fixed in the clamping hole, both ends of the node extend out of the clamping hole. The sliding rod assembly includes a rod body, a sliding sleeve, and a connector. The connector is fixed to one end of the rod body and is used for fixed connection with both ends of the node. The sliding sleeve is slidably connected to the rod body. The lifting connecting seat is located above the sliding sleeve and is connected to the sliding sleeve via a rotating shaft.

2. The shock absorber node performance testing fixture according to claim 1, characterized in that: A cross-shaped slide rail is installed on the fixed base; the cross-shaped slide rail has a vertically arranged vertical groove and a horizontally arranged horizontal groove formed inside; the middle positions of the vertical groove and the horizontal groove are interconnected; the cross-section of the vertical groove and the horizontal groove is T-shaped; the node clamp also includes a locking screw, two sliders and two support columns; the two support columns are respectively located on the left side of the left clamping block; the two sliders are respectively installed in the vertical groove or the horizontal groove; the head of the locking screw touches the right side of the right clamping block, and the tail passes through the right clamping block, the left clamping block and the support column in sequence before extending into the cross-shaped slide rail and being threadedly connected to the slider.

3. The shock absorber node performance testing fixture according to claim 2, characterized in that: The fixed base includes an L-shaped bracket, a triangular reinforcing plate, and a mounting plate; the L-shaped bracket includes a crossbeam and a vertical beam connected to the upper rear end of the crossbeam; the triangular reinforcing plate is fixed between the crossbeam and the vertical beam; the mounting plate is fixed to the right side of the upper part of the vertical beam; the cross slide rail is fixed to the right side of the mounting plate.

4. The shock absorber node performance testing fixture according to claim 1, characterized in that: The bottom of the lifting connecting seat is provided with two first ear plates distributed front and rear; a second ear plate is connected to the sliding sleeve; the second ear plate is located between the two first ear plates; the rotating shaft is mounted on the first ear plate and is rotatably connected to the second ear plate.

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