U-shaped spring test tool

Abstract

The utility model discloses a U-shaped spring testing tool which comprises a U-shaped spring to be tested and two square tension tools which are symmetrically arranged. The first screw rods are used for connecting the U-shaped spring to the square tension tool; the two force exerting blocks are symmetrically fixed on the two square tension tools through matching of first screw rods and screw caps; mounting steps are arranged on the inner side surfaces of the adjacent ends of the two square tension tools; notches are formed in the side walls of the adjacent ends of the two square tension tools, and threaded holes matched with the first screw rods are formed in the notches; the end, away from the end connected with the square tension tool, of the first screw is arranged in a connecting hole of the U-shaped spring in a sleeved mode. According to the utility model, the arrangement of the force exerting block improves the precision of the load force test of the U-shaped spring; the arrangement of the first screw rod greatly reduces the probability that the U-shaped spring is separated from the testing device and flies out during the U-shaped spring load force test, and is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the field of spring testing, in particular to a U-shaped spring testing tool. Background Art

[0002] As a basic component in mechanical equipment, springs are used in many fields of modern industry, especially in the fields of machinery, railway, construction and nuclear power. The demand for spring devices is increasing. Therefore, the quality requirements for springs are very high, and the load force measurement process of U-shaped springs is very important. In the prior art, the inner wall of the U-shaped spring is in contact with the test platform surface due to the influence of the test device during the test process, and it is often impossible to accurately test the load size of the U-shaped spring. In addition, the U-shaped spring is prone to detach from the test device and fly out during the test, which poses a great safety hazard. Utility Model Content

[0003] In view of this, in order to solve the above technical problems, the utility model adopts the following technical solutions:

[0004] A U-shaped spring testing tool, comprising a U-shaped spring to be tested, and further comprising: a square tension tool, wherein two square tension tools are symmetrically arranged;

[0005] A plurality of first screw rods, wherein the U-shaped spring is connected to the square tension fixture through the first screw rods;

[0006] There are two force blocks, which are symmetrically fixed on two square tension fixtures through first screws and nuts respectively;

[0007] The inner side surfaces of the adjacent ends of the two square tension fixtures are provided with installation steps; the side walls of the adjacent ends of the two square tension fixtures are provided with notches, and the notches are provided with threaded holes matching the first screw rod; the end of the first screw rod away from the connection to the square tension fixture is sleeved on the connection hole of the U-shaped spring.

[0008] Preferably, the force block contacts the U-shaped spring side in an arc shape, the arc end of the force block contacts the U-shaped spring side wall line, and the force block is provided with a coaxially arranged force block through hole and a force block forming hole, so as to facilitate fixing the force block to the square tension tooling through the first screw.

[0009] Preferably, the diameter of one end of the first screw away from the square tension fixture is larger than the diameter of one end near the square tension fixture, the diameter of one end of the first screw away from the square tension fixture is adapted to the diameter of the hole formed by the force block and is larger than the diameter of the hole through the force block, and the force block is fixed to the inner wall above the installation step of the square tension fixture, and the diameter of one end of the first screw away from the square tension fixture is adapted to the connecting hole of the U-shaped spring.

[0010] Preferably, the mounting steps of the two square tension fixtures are respectively provided with two mounting step screw holes downwards, and the mounting steps are respectively provided with adjustment gaskets and clamping gaskets from bottom to top, and the adjustment gaskets and clamping gaskets are respectively provided with through holes corresponding to the positions of the mounting step screw holes, and are connected and fixed to the square tension fixtures by clamping bolts, and the top of the clamping bolts is not higher than the plane height of the mounting steps.

[0011] Preferably, the U-shaped spring is installed in an inverted U shape on the step of the square tension fixture, and the number of the first screw rods is consistent with the number of connecting holes of the U-shaped spring.

[0012] Preferably, the two separated ends of the two square tensile fixtures are respectively provided with a second screw rod connected to the testing machine.

[0013] Preferably, the lower end surface of the force block is located above the compression gasket, and the lower end surface of the force block is in horizontal contact with the upper end surface of the compression gasket; this is conducive to the horizontal installation of the force block.

[0014] According to the above technical solution, the beneficial effects of the utility model are:

[0015] Compared with the prior art, the arc-shaped end of the force block is in line contact with the side wall of the U-shaped spring, thereby improving the accuracy of the U-shaped spring load force test; the force block is provided with a coaxially arranged force block through-hole and a force block forming hole; it is convenient to fix the force block on the square tension fixture through the first screw; the diameter of the end of the first screw away from the square tension fixture is adapted to the connecting hole of the U-shaped spring, thereby greatly reducing the probability of the U-shaped spring detaching from the test device and flying outward during the U-shaped spring load force test, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in the AA direction;

[0019] Figure 4 It is a horizontal cross-sectional schematic diagram of the utility model after removing the U-shaped spring;

[0020] Figure 5 This is an enlarged schematic diagram of the cross section of the force block of the utility model;

[0021] Figure 6 It is a schematic diagram of the enlarged structure of the first screw of the utility model.

[0022] In the accompanying drawings, 100, U-shaped spring; 101, connecting hole of U-shaped spring; 200, square tension tooling; 210, mounting step; 220, notch; 300, first screw; 310, nut; 400, force block; 410, force block through hole; 420, force block hole; 500, adjustment gasket; 600, clamping gasket; 700, clamping bolt; 800, second screw. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention.

[0024] like Figure 1-6 A U-shaped spring test fixture is shown, comprising a U-shaped spring 100 to be tested, two symmetrically arranged square tension fixtures 200; four first screws 300, wherein the U-shaped spring 100 is connected to the square tension fixtures 200 through the first screws 300; and two force blocks 400, which are symmetrically fixed to the two square tension fixtures 200 through the first screws 300 and nuts 310 respectively.

[0025] like Figure 1 , Figure 3 As shown, the inner side surfaces of the adjacent ends of the two square tension fixtures 200 are provided with installation steps 210; the side walls of the adjacent ends of the two square tension fixtures 200 are provided with notches 220, and the notches 220 are provided with threaded holes that match the first screw rod 300; the end of the first screw rod 300 away from the connection to the square tension fixture 200 is sleeved on the connection hole 101 of the U-shaped spring.

[0026] like Figure 3 , Figure 5 As shown, the force block 400 is in arc shape in contact with the side of the U-shaped spring, and the arc end of the force block 400 is in line contact with the side wall of the U-shaped spring 100. The force block 400 is provided with a coaxially arranged force block through hole 410 and a force block hole 420, which is convenient for fixing the force block 400 on the square tension tooling 200 through the first screw 300.

[0027] like Figure 3-6 As shown, the diameter of one end of the first screw 300 away from the square tension fixture 200 is larger than the diameter of one end close to the square tension fixture, the diameter of one end of the first screw away from the square tension fixture is adapted to the diameter of the hole 420 of the force block, and is larger than the diameter 410 of the hole of the force block, and the force block 400 is fixed to the inner side wall above the installation step 210 of the square tension fixture 200, and the diameter of one end of the first screw away from the square tension fixture is adapted to the connection hole 101 of the U-shaped spring;

[0028] like Figure 1-6As shown, the U-shaped spring 100 is installed in an inverted U shape on the step of the square tension fixture 200, and the number of the first screw rods 300 is consistent with the number of the connecting holes 101 of the U-shaped spring; the installation steps 210 of the two square tension fixtures 200 are respectively provided with two installation step screw holes downward, and the installation steps 210 are respectively provided with adjusting gaskets 500 and clamping gaskets 600 from bottom to top. The adjusting gaskets 500 are used to adjust the height so that the installation hole 101 of the U-shaped spring is adapted to the height of the first bolt 300. The adjusting gaskets 500 and the clamping gaskets 600 are provided with through holes corresponding to the positions of the installation step screw holes, and are connected and fixed to the square tension fixture 200 by clamping bolts 700, and the top of the clamping bolts 700 is not higher than the plane height of the installation step 210.

[0029] like Figure 3 As shown, the lower end surface of the force block 400 is located above the compression gasket 600, and the lower end surface of the force block is in horizontal contact with the upper end surface of the compression gasket, which is conducive to the horizontal installation of the force block.

[0030] like Figure 1-6 As shown, when the U-shaped spring 100 is installed, the testing machine connected to the second screw 800 at one end away from the two square tension fixtures 200 is started, the two square tension fixtures 200 are brought close to each other, the connecting hole of the U-shaped spring 100 is sleeved on one end of the first screw 300, and then the two square tension fixtures 200 are adjusted to move away from each other and the U-shaped spring is subjected to a load test.

[0031] The arc-shaped end of the force block 400 is in line contact with the side wall of the U-shaped spring 100, thereby improving the accuracy of the load force test of the U-shaped spring 100; the force block 400 is provided with a coaxially arranged force block through-hole 410 and a force block hole 420; it is convenient to fix the force block 400 on the square tension fixture 200 through the first screw 300; the diameter of the end of the first screw 300 away from the square tension fixture 200 is adapted to the connecting hole 101 of the U-shaped spring, thereby greatly reducing the probability of the U-shaped spring 100 detaching from the test device and flying out during the load force test of the U-shaped spring 100, which is safer.

[0032] The above description is only a preferred feasible embodiment of the present utility model and is not intended to limit the patent scope of the present utility model. Therefore, any equivalent structural changes made using the contents of the present utility model specification and drawings are also included in the scope of the present utility model.

Claims

1. A U-shaped spring testing tool, comprising a U-shaped spring to be tested, characterized in that: Also includes: A square tension tooling, wherein two square tension toolings are symmetrically arranged; A plurality of first screw rods, wherein the U-shaped spring is connected to the square tension fixture through the first screw rods; There are two force blocks, which are symmetrically fixed on two square tension fixtures through first screws and nuts respectively; The inner side surfaces of the adjacent ends of the two square tension fixtures are provided with installation steps; the side walls of the adjacent ends of the two square tension fixtures are provided with notches, and the notches are provided with threaded holes matching the first screw rod; the end of the first screw rod away from the connection to the square tension fixture is sleeved on the connection hole of the U-shaped spring.

2. A U-shaped spring testing tool according to claim 1, characterized in that: The force block contacts the U-shaped spring side in an arc shape, the arc end of the force block contacts the U-shaped spring side wall line, and the force block is provided with a coaxially arranged force block through hole and a force block forming hole.

3. A U-shaped spring testing tool according to claim 2, characterized in that: The diameter of one end of the first screw away from the square tension fixture is larger than the diameter of one end close to the square tension fixture. The diameter of one end of the first screw away from the square tension fixture is adapted to the diameter of the hole formed by the force block and is larger than the diameter of the hole through the force block. The diameter of one end of the first screw away from the square tension fixture is adapted to the connecting hole of the U-shaped spring.

4. A U-shaped spring testing tool according to claim 2, characterized in that: The installation steps of the two square tensioning toolings are respectively provided with two installation step screw holes downwards, and the installation steps are respectively provided with adjustment gaskets and clamping gaskets from bottom to top. The adjustment gaskets and clamping gaskets are provided with through holes corresponding to the positions of the installation step screw holes, and are connected and fixed to the square tensioning tooling by clamping bolts, and the top of the clamping bolts is not higher than the plane height of the installation steps.

5. A U-shaped spring testing tool according to claim 3, characterized in that: The U-shaped spring is installed in an inverted U shape on the step of the square tension fixture, and the number of the first screw rods is consistent with the number of the connection holes of the U-shaped spring.

6. A U-shaped spring testing tool according to claim 1, characterized in that: The two ends of the two square tension fixtures that are separated from each other are respectively provided with a second screw rod connected to the testing machine.

7. A U-shaped spring testing tool according to claim 4, characterized in that: The lower end surface of the force block is located above the compression gasket, and the lower end surface of the force block is in horizontal contact with the upper end surface of the compression gasket.

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