A fixed support for cylindrical helical compression spring performance test

Abstract

The present invention provides a cylindrical helical compression spring performance test fixed support, including two upper and lower independent fixed supports, the upper fixed support includes a first fixed plate, a first limit seat, a first axis tube and an upper retaining tube, the lower fixed support includes a second fixed plate, a second limit seat, a second axis tube and a lower retaining tube, and the first fixed plate and the second fixed plate are respectively provided with mounting holes. The upper and lower fixed supports of the present invention can be reliably and effectively fastened to the test equipment by bolts to ensure that the upper and lower supports will not loosen or move during the test process; the first limit seat and the second limit seat can effectively limit the displacement or misalignment of the spring during the test; the first axis tube and the second axis tube can adjust the coaxiality of the upper and lower fixed supports when installed with the detection equipment to ensure that the spring avoids the deviation of the axial verticality of the spring caused by the detection equipment before the test installation.

Description

Technical Field

[0001] The invention relates to the field of spring performance testing devices, in particular to a cylindrical helical compression spring performance testing fixed support. Background Art

[0002] With the widespread use of spring isolators in vibration reduction and earthquake resistance, the use of helical compression springs has increased accordingly. Generally, spring isolators use metal cylindrical helical compression springs.

[0003] While metal cylindrical helical compression springs are widely used, the quality of the springs has been put forward to reliable guarantee. In the face of huge spring performance test inspections, a series of test requirements are put forward for the control of spring test conditions. Therefore, the use of reliable spring test auxiliary test supports can reasonably and effectively improve the accuracy of test data, which is the current test requirement.

[0004] The existing spring performance test mainly has the following problems: First, during the existing spring performance test, the spring is generally placed directly on the workbench of the testing equipment for various tests. Due to the long-term reciprocating test, the spring test process will cause different degrees of deviation, which will cause the discreteness of the test data to be too large. At the same time, excessive deviation will cause the destruction of the spring reciprocating test process, and it is impossible to obtain accurate and reliable test data. Second, during the large-scale lateral deviation test of the spring, when the lateral force of the spring is greater than the friction between the spring and the test workbench, if the spring is not fixed up and down, the spring will fall over, causing harm to the test equipment or test personnel. At the same time, the spring steel wire is generally cylindrical and cannot be effectively fixed to the test workbench. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a fixed support that can effectively control the deviation of the spring test process, provide a complete and reliable test environment, obtain real and reliable test data, and also ensure the safety of the spring test process.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a cylindrical helical compression spring performance test fixed support, including two independent upper and lower fixed supports, the upper fixed support including a first fixed plate, a first limit seat, a first axial tube and an upper retaining tube, the lower fixed support including a second fixed plate, a second limit seat, a second axial tube and a lower retaining tube, the first fixed plate and the second fixed plate are respectively provided with mounting holes, the upper retaining tube is fixed on the first fixed plate, the lower retaining tube is fixed on the second fixed plate, the first limit seat is fixed on the first fixed plate in the upper retaining tube, the second limit seat is fixed on the second fixed plate in the lower retaining tube, the first axial tube is fixed on the middle part of the first limit seat, and the second axial tube is fixed on the middle part of the second limit seat.

[0007] Preferably, the mounting holes are arranged in a circular array, and the mounting holes are respectively provided on the outer sides of the upper retaining tube and the lower retaining tube.

[0008] Preferably, the first axis tube is fixed on the axis of the first position limiting seat, and the second axis tube is fixed on the axis of the second position limiting seat, and the first axis tube and the second axis tube are arranged in a mirror image.

[0009] Preferably, the first position limiting seat fixed on the first fixing plate and the second position limiting seat fixed on the second fixing plate are arranged in mirror symmetry.

[0010] Preferably, the central axis of the first axial tube is the same as the central axis of the upper baffle tube, the center of the first fixing plate is on the central axis of the first axial tube, the central axis of the second axial tube is the same as the central axis of the lower baffle tube, and the center of the second fixing plate is on the central axis of the second axial tube.

[0011] Preferably, the length of the lower baffle tube is greater than the length of the upper baffle tube.

[0012] Preferably, the first position limiting seat has a first through hole at its center, the first axis tube is fixed in the first through hole, one end of the first axis tube is fixed on the first fixing plate, and the other end of the first axis tube is exposed outside the first position limiting seat; the second position limiting seat has a second through hole at its center, the second axis tube is fixed in the second through hole, one end of the second axis tube is fixed on the second fixing plate, and the other end of the second axis tube is exposed outside the second position limiting seat.

[0013] Preferably, the mounting holes are circular holes, there are at least three mounting holes, and the diameter of the mounting holes is 25 mm.

[0014] Preferably, when in use, the upper fixed support is fastened to the upper workbench of the detection equipment with bolts, and the lower fixed support is fastened to the lower workbench of the detection equipment; the upper fixed support and the lower fixed support are adjusted and aligned with the detection equipment so that the straight line formed by the center of the first axis tube and the center of the second axis tube is perpendicular to the upper workbench and the lower workbench of the detection equipment; the spring is wrapped around the inside of the retaining tube, one end of the spring is mounted outside the first limit seat, and the other end of the spring is mounted outside the second limit seat.

[0015] Preferably, the center of the second axial tube is on the central axis of the first axial tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The installation connection between the upper and lower fixed supports and the detection equipment of the present invention is simple and practical. It is only necessary to use bolts to fasten the upper and lower fixed supports to the upper and lower workbenches of the equipment respectively. The upper and lower fixed supports are reliably and effectively fastened to the test equipment by bolts to ensure that the upper and lower supports will not loosen or move during the test work process; (2) The centers of the upper and lower fixed supports of the present invention have a first axis tube and a second axis tube. The first axis tube is located at the center of the upper fixed support, and the second axis tube is located at the center of the lower fixed support. During the test, the spring directly determines the center of the spring position through the first limit seat or the second limit seat, and there is no need to find the center of the test workbench. The first axis tube or the second axis tube is fixed to the center of the upper and lower fixed supports respectively. When connected with the detection equipment, the axis position of the upper and lower fixed supports is adjusted through the first axis tube and the second axis tube to ensure that the spring will not deviate when placed, avoid damage to the spring during the reciprocating test caused by excessive deviation during the spring test, reduce the discreteness of the experimental data, effectively control the deviation of the spring test process, and provide a complete and reliable test environment. Real and reliable test data; (3) The upper and lower fixed supports of the present invention have a first limit seat and a second limit seat, the two ends of the spring respectively abut against the first fixed plate and the second fixed plate, and the outer sides of the two ends of the spring have an upper retaining tube and a lower retaining tube to prevent the lateral force of the spring from being greater than the friction between the spring and the test workbench during the test. If the spring is not fixed up and down, the spring will overturn, causing harm to the test equipment or test personnel; (4) The upper fixed support and the lower fixed support also have an upper retaining tube and a lower retaining tube respectively, which act as a protective barrier during the periodic reciprocating test of the spring, surround the spring inside the retaining tube, and protect the spring from breaking and fragments flying during the spring test. At the same time, it can also effectively limit the lateral displacement or misalignment of the spring during the test; (5) When the upper and lower fixed supports are fixed on the testing equipment, the axes of the upper and lower fixed supports are perpendicular to the upper and lower workbenches of the testing equipment, ensuring that the spring is compressed in the vertical direction of the upper and lower workbenches of the testing equipment during the test, testing the spring performance, and reducing the deviation of the axial verticality of the spring caused by the testing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a fixed support for a cylindrical helical compression spring performance test of the present invention;

[0018] Figure 2 It is a structural schematic diagram of an upper fixed support of a fixed support for a cylindrical helical compression spring performance test according to the present invention;

[0019] Figure 3 It is a structural schematic diagram of a lower fixed support of a cylindrical helical compression spring performance test fixed support of the present invention;

[0020] Figure 4 A bottom view of an upper fixed support of a fixed support for a cylindrical helical compression spring performance test;

[0021] Figure 5 This is a top view of the lower fixed support of a fixed support for testing the performance of a cylindrical helical compression spring. DETAILED DESCRIPTION

[0022] In order to further understand the purpose, structure, features, and functions of the present invention, the following detailed description is made in conjunction with the embodiments. Figure 1 , Figure 2 and Figure 3 A cylindrical helical compression spring performance test fixed support, including two independent upper and lower fixed supports, the upper fixed support 100 includes a first fixed plate 110, a first limit seat 120, a first axial tube 130 and an upper retaining tube 140, the lower fixed support 200 includes a second fixed plate 210, a second limit seat 220, a second axial tube 230 and a lower retaining tube 240, the first fixed plate 110 and the second fixed plate 210 are respectively provided with mounting holes 300, the upper retaining tube 140 is fixed on the first fixed plate 110, and the lower retaining tube 240 is fixed The first retaining plate 110 is fixed on the second fixing plate 210. When in use, the spring is placed in the upper retaining tube 140 and the lower retaining tube 240. The upper retaining tube 140 and the lower retaining tube 240 form an effective protective barrier on the outside of the spring. The first limit seat 120 is fixed on the first fixing plate 110 in the upper retaining tube 140, and the second limit seat 220 is fixed on the second fixing plate 210 in the lower retaining tube 240. The first axial tube 130 is fixed on the middle part of the first limit seat 120, and the second axial tube 230 is fixed on the middle part of the second limit seat 220.

[0023] like Figure 4 and Figure 5, the mounting holes 300 are arranged in a circular array, and the mounting holes 300 are respectively arranged on the outer sides of the upper retaining tube 140 and the lower retaining tube 240. The mounting holes 300 are circular holes, and there are at least three mounting holes 300, and the diameter of the mounting holes 300 is 25 mm. As shown in the figure, there are 8 mounting holes of φ25 mm on the first fixed plate 110 or the second fixed plate 210, and the 8 mounting holes are arranged in a circular array, which can be conveniently and quickly connected and fixed to the workbench of the detection equipment. The installation connection between the upper and lower fixed supports 100 or 200 and the detection equipment is simple and practical, and the upper and lower fixed supports 100 or 200 only need to be fastened to the upper and lower workbenches of the equipment with bolts.

[0024] like Figure 1 The first axis tube 130 is fixed on the axis of the first position limiting seat 120, and the second axis tube 230 is fixed on the axis of the second position limiting seat 220. The first axis tube 130 and the second axis tube 230 are arranged in a mirror image. The central axis of the first axis tube 130 is the same as the central axis of the upper retaining tube 140. The center of the first fixed plate 110 is on the central axis of the first axis tube 130. The central axis of the second axis tube 230 is the same as the central axis of the lower retaining tube 240. The center of the second fixed plate 210 is on the central axis of the second axis tube 230, that is, the first axis tube 130 is located at the center of the upper fixed support 100, and the second axis tube 230 is located at the center of the lower fixed support 200. During the test, the center of the spring position is directly determined by the first position limiting seat 120 or the second position limiting seat 220, and there is no need to find the center of the test bench. The first axis tube 130 or the second axis tube 230 is fixed at the center of the upper and lower fixed supports 100 or 200, respectively. When connected with the detection equipment, the axial position of the upper and lower fixed supports 100 or 200 is adjusted through the first axis tube 130 and the second axis tube 230 to ensure that the spring will not be offset when placed, to avoid damage to the spring during the reciprocating test caused by excessive offset during the spring test, to reduce the discreteness of the experimental data, to effectively control the offset of the spring test process, to provide a complete and reliable test environment, and to obtain real and reliable test data.

[0025] The first position-limiting seat 120 fixed on the first fixing plate 110 and the second position-limiting seat 220 fixed on the second fixing plate 210 are arranged in mirror symmetry. The first position-limiting seat 120 has a first through hole 121 at its center, the first axis tube 130 is fixed in the first through hole 121, one end of the first axis tube 130 is fixed on the first fixing plate 110, and the other end of the first axis tube 130 is exposed outside the first position-limiting seat 120; the second position-limiting seat 220 has a second through hole 221 at its center, the second axis tube 230 is fixed in the second through hole 221, one end of the second axis tube 230 is fixed on the second fixing plate 210, and the other end of the second axis tube 230 is exposed outside the second position-limiting seat 220. When in use, when aligning and finding the axis, a connecting tube can be used to insert the two ends of the connecting tube into the first axis tube 130 and the second axis tube 230 respectively, to ensure that the central axis of the connected first axis tube 130 and the second axis tube 230 is the same, so as to achieve the same axis position of the upper and lower fixed supports 100 or 200, after aligning the position, take out the connecting tube, and put the spring into the upper retaining tube 140 and the lower retaining tube 240. It is convenient to find the axis position of the upper and lower fixed supports, and there will be no deviation after the spring is put in. Before the test, adjust the coaxiality of the upper fixed support 100 and the lower fixed support 200 to ensure that the spring avoids the deviation of the spring axial verticality caused by the detection equipment before the test installation.

[0026] like Figure 1 When in use, the upper fixed support 100 is fastened to the upper workbench of the testing equipment with bolts, and the lower fixed support 200 is fastened to the lower workbench of the testing equipment; the upper fixed support 100 and the lower fixed support 200 are adjusted and aligned with the testing equipment, so that the straight line formed by the center of the first axis tube 130 and the center of the second axis tube 230 is perpendicular to the upper and lower workbenches of the testing equipment; the center of the second axis tube 230 is on the central axis of the first axis tube 130, ensuring the coaxiality of the upper fixed support 100 and the lower fixed support 200. The axis of the upper and lower fixed supports is the straight line formed by the center of the first axis tube 130 and the center of the second axis tube 230, and the axis is perpendicular to the upper and lower workbenches of the testing equipment, ensuring that the spring is compressed in the vertical direction of the upper and lower workbenches of the testing equipment during the test, testing the spring performance, and reducing the deviation of the axial verticality of the spring caused by the testing equipment.

[0027] The spring is wrapped around the upper retaining tube 140 and the lower retaining tube 240, one end of the spring is sleeved outside the first limit seat 120, and the other end of the spring is sleeved outside the second limit seat 220, and the two ends of the spring are fixed on the first limit seat 120 and the second limit seat 220, and the two ends of the spring are respectively against the first fixed plate 110 and the second fixed plate 210, and the outer sides of the two ends of the spring are provided with the upper retaining tube 140 and the lower retaining tube 240 to avoid the lateral force of the spring being greater than the friction between the spring and the test workbench during the test. If the spring is not fixed up and down, the spring will tip over, causing harm to the test equipment or test personnel.

[0028] The length of the lower baffle tube 240 is greater than that of the upper baffle tube 140, ensuring that the spring can be compressed in the longitudinal direction when testing the spring performance during the spring compression experiment, which can effectively limit the lateral deviation generated during the spring test. The compressed spring can be stored in the lower baffle tube 240 to prevent the spring from breaking and fragments from flying during the spring test, thereby avoiding safety hazards caused by damage to the human body.

[0029] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A cylindrical helical compression spring performance test fixed support, characterized in that: The invention comprises two independent upper and lower fixed supports, the upper fixed support comprises a first fixed plate, a first limit seat, a first axial tube and an upper retaining tube, the lower fixed support comprises a second fixed plate, a second limit seat, a second axial tube and a lower retaining tube, the first fixed plate and the second fixed plate are respectively provided with mounting holes, the upper retaining tube is fixed on the first fixed plate, the lower retaining tube is fixed on the second fixed plate, the first limit seat is fixed on the first fixed plate in the upper retaining tube, the second limit seat is fixed on the second fixed plate in the lower retaining tube, the first axial tube is fixed on the middle part of the first limit seat, and the second axial tube is fixed on the middle part of the second limit seat; the mounting holes are arranged in a circular array, and the mounting holes are respectively arranged on the outer sides of the upper retaining tube and the lower retaining tube; the length of the lower retaining tube is greater than the length of the upper retaining tube; The first axis tube or the second axis tube is fixed at the center of the upper and lower fixed supports respectively. When connected with the detection equipment, the axis position of the upper and lower fixed supports is adjusted through the first axis tube and the second axis tube; the spring is wrapped around the inside of the upper retaining tube and the lower retaining tube, one end of the spring is sleeved outside the first limit seat, and the other end of the spring is sleeved outside the second limit seat, and the two ends of the spring are fixed on the first limit seat and the second limit seat, and the two ends of the spring are respectively against the first fixed plate and the second fixed plate, and the outer sides of the two ends of the spring are provided with an upper retaining tube and a lower retaining tube.

2. A cylindrical helical compression spring performance test fixing support as claimed in claim 1, characterized in that: The first axis tube is fixed on the axis of the first position limiting seat, and the second axis tube is fixed on the axis of the second position limiting seat. The first axis tube and the second axis tube are arranged in a mirror image.

3. A cylindrical helical compression spring performance test fixing support as claimed in claim 1, characterized in that: The first position limiting seat fixed on the first fixing plate and the second position limiting seat fixed on the second fixing plate are arranged in a mirror-symmetrical manner.

4. A cylindrical helical compression spring performance test fixing support as claimed in claim 1, characterized in that: The central axis of the first axial tube is the same as the central axis of the upper baffle tube, the center of the first fixing plate is on the central axis of the first axial tube, the central axis of the second axial tube is the same as the central axis of the lower baffle tube, and the center of the second fixing plate is on the central axis of the second axial tube.

5. A cylindrical helical compression spring performance test fixing support as claimed in claim 1, characterized in that: The first position limiting seat has a first through hole at its center, the first axis tube is fixed in the first through hole, one end of the first axis tube is fixed on the first fixing plate, and the other end of the first axis tube is exposed outside the first position limiting seat; the second position limiting seat has a second through hole at its center, the second axis tube is fixed in the second through hole, one end of the second axis tube is fixed on the second fixing plate, and the other end of the second axis tube is exposed outside the second position limiting seat.

6. A cylindrical helical compression spring performance test fixing support as claimed in claim 1, characterized in that: The mounting holes are circular holes, there are at least three mounting holes, and the diameter of the mounting holes is 25 mm.

7. A cylindrical helical compression spring performance test fixing support as claimed in claim 1, characterized in that: The upper fixed support is fastened to the upper workbench of the detection equipment with bolts, and the lower fixed support is fastened to the lower workbench of the detection equipment; the upper fixed support and the lower fixed support are adjusted and aligned with the detection equipment, and the straight line formed by the center of the first axis tube and the center of the second axis tube is perpendicular to the upper workbench and the lower workbench of the detection equipment; a spring is surrounded by the interior of the upper retaining tube and the lower retaining tube, one end of the spring is sleeved outside the first limit seat, and the other end of the spring is sleeved outside the second limit seat.

8. A cylindrical helical compression spring performance test fixing support as claimed in claim 7, characterized in that: The center of the second axial tube is on the central axis of the first axial tube.

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