Torsion spring limiting mechanism and torsion spring testing fixture

Abstract

The utility model relates to the technical field of torsional spring detection tools, in particular to a torsional spring limiting mechanism, which mainly comprises a bottom plate, a connecting shaft, a pressing plate arranged at the bottom of the bottom plate, a torsional spring arranged above the bottom plate, a limiting mechanism arranged below the pressing plate, a connecting mechanism arranged above the connecting shaft and used for limiting and fixing the torsional spring, and a limiting mechanism arranged above the connecting shaft and used for limiting and fixing the torsional spring. The connecting device is used for connecting and detaching the device. The pull rod drives the first clamping plate to move and extrude the spring; the lower end of the torsion spring penetrates into the clamping hole; the pull plate is loosened; under the elastic action of the spring, the first clamping plate fixes the lower end of the torsion spring in the clamping hole, and the upper end of the torsion spring is mounted between the connecting groove and the clamping groove; and the threaded rod drives the second clamping plate to fix the upper end of the torsional spring, so that the torsional spring is limited and fixed, it is guaranteed that the torsional spring is not prone to moving during measurement, and then the measurement accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of torsion spring inspection tools, in particular to a torsion spring limiting mechanism and a torsion spring inspection tool. Background Art

[0002] The most important performance of a torsion spring is torque, and the angle of the torsion arm directly affects the torque of the torsion spring. Therefore, the domestic spring industry generally controls the torque by requiring the angle of the torsion arm. The angles of both the external torsion arm torsion spring and the straight torsion arm torsion spring can be directly measured by image measuring instruments and other testing equipment. The torsion spring inspection fixture is a tool and equipment used to measure and evaluate the performance and characteristics of the torsion spring.

[0003] Most existing torsion spring gauges directly use a stopper rod to contact the torsion spring to block the torsion spring. When measuring, it is easy to cause the torsion spring to loosen and slide, making it difficult to stably limit and fix the torsion spring, thereby affecting the measurement result.

[0004] Therefore, a torsion spring limiting mechanism and a torsion spring inspection tool are proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a torsion spring limiting mechanism and a torsion spring checking fixture to solve the problems raised by the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A torsion spring limiting mechanism comprises: a bottom plate;

[0008] A connecting shaft, arranged at the bottom of the base plate;

[0009] A pressing plate, arranged above the bottom plate;

[0010] A measuring hole is arranged on the top of the pressing plate;

[0011] A torsion spring, arranged below the pressure plate;

[0012] A limiting mechanism, arranged above the connecting shaft, for limiting and fixing the torsion spring;

[0013] The connecting mechanism is arranged above the bottom plate and is used for connecting and disassembling the device.

[0014] Preferably, the limiting mechanism includes a first slider, a fixing groove is provided on the top surface of the bottom plate, the inner wall of the fixing groove is slidably connected to the outer wall of the first slider, a clamping hole is provided on the top surface of the first slider, and two first clamping plates are arranged inside the clamping hole.

[0015] Preferably, pull rods are fixedly installed on the outer walls of the two first clamping plates respectively, and the other ends of the two pull rods slide through the inner wall of the card hole and extend to the outside of the first slider, and pull plates are fixedly installed on one end of the two pull rods, and springs are slidably sleeved on the outer walls of the two pull rods respectively, and the two ends of the two springs are fixedly connected to the inner wall of the card hole and the outer walls of the two first clamping plates respectively.

[0016] Preferably, a connecting groove is formed through the top surface of the pressure plate, a second slider is slidably connected to the inner wall of the connecting groove, a clamping groove is formed through the top surface of the second slider, a second clamping plate is arranged inside the clamping groove, limiting plates are fixedly installed on the outer walls at both ends of the second clamping plate, limiting grooves are respectively formed on the inner walls on both sides of the clamping groove, and the outer walls of the two limiting plates are slidably connected to the inner walls of the two limiting grooves respectively.

[0017] Preferably, a threaded rod is rotatably connected to the outer wall of the upper end of the second clamping plate, a fixing plate is fixedly installed on the inner wall of the slot, the thread on the upper end of the threaded rod passes through the bottom surface of the fixing plate and extends to above the fixing plate, and a handle is fixedly installed on the upper end of the threaded rod.

[0018] Preferably, two first threaded holes are provided on the top surface of the first sliding block, a mounting plate is fixedly installed on the inner wall of the fixing groove by hexagonal bolts, two first sliding grooves are provided through the top surface of the mounting plate, the inner walls of the two first sliding grooves are respectively connected to the inner walls of the first threaded holes by bolts, and a through groove is provided through the top surface of the mounting plate.

[0019] Preferably, the top surface of the second sliding block is provided with two second threaded holes, the top surface of the pressure plate is provided with two second sliding grooves, the inner walls of the second sliding grooves are connected to the second threaded holes by bolts, and the two ends of the torsion spring are respectively connected to the inner walls of the hole and the inner walls of the groove.

[0020] Preferably, the connecting mechanism includes a rod core, a threaded groove is provided on the top surface of the base plate, the outer wall of the lower end of the rod core is threadedly connected to the threaded groove, a cylinder is integrally installed on the middle outer wall of the rod core, a bearing is slidably installed on the outer wall of the upper end of the rod core, the outer wall of the bearing is fixedly connected to the inner wall of the pressure plate, and the outer wall of the upper end of the rod core is meshedly connected with a nut.

[0021] A torsion spring inspection tool comprises the torsion spring limiting mechanism.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model drives the pull rod to rotate by pulling the pull plate, and the pull rod drives the first clamping plate to move and squeeze the spring, so that the lower end of the torsion spring is inserted into the clamping hole, and the pull plate is released. Under the elastic force of the spring, the first clamping plate fixes the lower end of the torsion spring in the clamping hole, and the upper end of the torsion spring is installed between the connecting groove and the clamping groove. The handle is rotated to drive the threaded rod to rotate and move, and the threaded rod drives the second clamping plate to fix the upper end of the torsion spring, thereby limiting and fixing the torsion spring, ensuring that the torsion spring is not easy to move during measurement, thereby improving the measurement accuracy.

[0024] The lower end of the rod core is threadedly connected to the thread groove, so that the pressure plate can be fixed and installed conveniently and quickly. At the same time, the setting of the cylinder, bearing and nut can fix the pressure plate to ensure that the pressure plate is not easy to shake during measurement and the pressure plate will not rotate with the rod core. Through the cooperation of the external measuring rod and the measuring hole on the pressure plate, the detection result of the torsion spring can be accurately obtained, which is convenient, fast and highly accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 2 It is an exploded view of the three-dimensional structure of the utility model;

[0027] Figure 3 It is a cross-sectional schematic diagram of the three-dimensional structure of the first sliding block of the utility model;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the second sliding block of the utility model.

[0029] In the figure: 1, bottom plate; 101, connecting shaft; 102, pressure plate; 103, measuring hole; 104, torsion spring; 2, limiting mechanism; 201, fixing groove; 202, first slider; 203, clamping hole; 204, first clamping plate; 205, pull rod; 206, spring; 207, pull plate; 208, connecting groove; 209, second slider; 210, clamping groove; 211, second clamping plate; 212, limiting plate; 213, limiting groove; 214, fixing plate; 215, threaded rod; 216, handle; 217, first threaded hole; 218, mounting plate; 219, first slide groove; 220, second slide groove; 221, second threaded hole; 222, through groove; 3, connecting mechanism; 301, rod core; 302, threaded groove; 303, cylinder; 304, bearing; 305, nut. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application. Example

[0032] See also Figure 1-4 The utility model provides a technical solution: a torsion spring limiting mechanism, comprising: a bottom plate 1, a connecting shaft 101, arranged at the bottom of the bottom plate 1, a pressing plate 102, arranged above the bottom plate 1, a measuring hole 103, arranged at the top of the pressing plate 102, and a torsion spring 104, arranged below the pressing plate 102;

[0033] The limiting mechanism 2 is arranged above the connecting shaft 101 and is used to limit and fix the torsion spring 104. The limiting mechanism 2 includes a first slider 202. A fixing groove 201 is provided on the top surface of the bottom plate 1. The inner wall of the fixing groove 201 is slidably connected with the outer wall of the first slider 202. A clamping hole 203 is provided on the top surface of the first slider 202. Two first clamping plates 204 are arranged inside the clamping hole 203. Pull rods 205 are fixedly installed on the outer walls of the two first clamping plates 204 respectively. The other ends of the two pull rods 205 slide through the inner wall of the clamping hole 203 and extend to the first slider 2. 02, one end of the two pull rods 205 is fixedly installed with a pull plate 207, the outer walls of the two pull rods 205 are respectively slidably sleeved with springs 206, the two ends of the two springs 206 are respectively fixedly connected to the inner wall of the clamping hole 203 and the outer walls of the two first clamping plates 204, a connecting groove 208 is opened through the top surface of the pressure plate 102, and the inner wall of the connecting groove 208 is slidably connected with a second slider 209, and the top surface of the second slider 209 is opened through the card slot 210, and the second clamping plate 211 is arranged inside the card slot 210, and the outer walls of the two ends of the second clamping plate 211 are respectively fixedly installed with limited The inner walls of the two sides of the slot 210 are respectively provided with limiting slots 213, and the outer walls of the two limiting plates 212 are respectively slidably connected with the inner walls of the two limiting slots 213. The outer wall of the upper end of the second clamping plate 211 is rotatably connected with a threaded rod 215, and the inner wall of the slot 210 is fixedly installed with a fixing plate 214. The upper end thread of the threaded rod 215 penetrates the bottom surface of the fixing plate 214 and extends to the top of the fixing plate 214. The upper end of the threaded rod 215 is fixedly installed with a handle 216. The top surface of the first slider 202 is provided with two first threaded holes 217. The inner wall of the fixing slot 201 is connected by six The mounting plate 218 is fixedly installed by the angle bolts, and two first slide grooves 219 are formed through the top surface of the mounting plate 218, and the inner walls of the two first slide grooves 219 are respectively connected to the inner walls of the first threaded hole 217 by bolts, and a through groove 222 is formed through the top surface of the mounting plate 218, and two second threaded holes 221 are formed on the top surface of the second slider 209, and two second slide grooves 220 are formed on the top surface of the pressure plate 102, and the inner walls of the second slide grooves 220 are connected to the second threaded holes 221 by bolts, and the two ends of the torsion spring 104 are respectively connected to the inner walls of the clamping hole 203 and the inner walls of the clamping groove 210;

[0034] By pulling the pull plate 207, the pull rod 205 is driven to rotate, and the pull rod 205 drives the first clamping plate 204 to move and squeeze the spring 206, so that the lower end of the torsion spring 104 is inserted into the clamping hole 203, and the pull plate 207 is released. Under the elastic force of the spring 206, the first clamping plate 204 fixes the lower end of the torsion spring 104 in the clamping hole 203, and the upper end of the torsion spring 104 is installed between the connecting groove 208 and the clamping groove 210. The handle 216 is turned to drive the threaded rod 215 to rotate and move, and the threaded rod 215 drives the second clamping plate 211 to fix the upper end of the torsion spring 104, thereby limiting and fixing the torsion spring 104, ensuring that the torsion spring 104 is not easy to move during measurement, thereby improving the measurement accuracy; Example

[0035] like Figure 1-4 As shown, a torsion spring limiting mechanism disclosed in Example 2 of the utility model has a structure that is basically the same as that in Example 1, except that a connecting mechanism 3 is provided above the base plate 1 for connecting and disassembling the device, the connecting mechanism 3 includes a rod core 301, a threaded groove 302 is provided on the top surface of the base plate 1, the outer wall of the lower end of the rod core 301 is threadedly connected to the threaded groove 302, a cylinder 303 is integrally installed on the middle outer wall of the rod core 301, a bearing 304 is slidably installed on the outer wall of the upper end of the rod core 301, the outer wall of the bearing 304 is fixedly connected to the inner wall of the pressure plate 102, and a nut 305 is meshedly connected to the outer wall of the upper end of the rod core 301.

[0036] By threading the lower end of the rod core 301 with the threaded groove 302, the pressure plate 102 can be fixed and installed conveniently and quickly. At the same time, the arrangement of the cylinder 303, the bearing 304 and the nut 305 can fix the pressure plate 102 to ensure that the pressure plate 102 is not easy to shake during measurement, and the pressure plate 102 will not rotate with the rod core 301. Through the cooperation of the external measuring rod and the measuring hole 103 on the pressure plate 102, the detection result of the torsion spring 104 can be accurately obtained, which is convenient, fast and highly accurate.

[0037] A torsion spring inspection tool comprises a torsion spring limiting mechanism.

[0038] The specific solution is as follows: first, the positions of the first slider 202 and the second slider 209 are adjusted according to the size of the torsion spring 104, the pull plate 207 is pulled to drive the pull rod 205 to rotate, the pull rod 205 drives the first clamping plate 204 to move and squeeze the spring 206, the lower end of the torsion spring 104 is inserted into the clamping hole 203, the pull plate 207 is released, and under the elastic force of the spring 206, the first clamping plate 204 fixes the lower end of the torsion spring 104 in the clamping hole 203, the lower end of the rod core 301 is connected to the inner wall of the threaded groove 302 on the top surface of the bottom plate 1, and the cylinder 30 3. The bearing 304 and the nut 305 fix the pressure plate 102, and the external measuring rod is matched with the measuring hole 103 on the pressure plate 102. The upper end of the torsion spring 104 is installed between the connecting groove 208 and the clamping groove 210. The handle 216 is turned to drive the threaded rod 215 to rotate and move. The threaded rod 215 drives the second clamping plate 211 to fix the upper end of the torsion spring 104, and then the torsion spring 104 is limited and fixed to ensure that the torsion spring 104 is not easy to move during measurement, thereby improving the measurement accuracy. The torsion spring 104 can be torsionally detected by driving the bottom plate 1 to rotate through external power.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0040] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A torsion spring limiting mechanism, characterized in that: include: Bottom plate (1); A connecting shaft (101) is arranged at the bottom of the base plate (1); A pressing plate (102) arranged above the bottom plate (1); A measuring hole (103) is arranged on the top of the pressing plate (102); A torsion spring (104) is arranged below the pressure plate (102); A limiting mechanism (2), arranged above the connecting shaft (101), and used for limiting and fixing the torsion spring (104); A connecting mechanism (3) is arranged above the base plate (1) and is used for connecting and disassembling the device.

2. A torsion spring limiting mechanism according to claim 1, characterized in that: The limiting mechanism (2) comprises a first slider (202); a fixing groove (201) is provided on the top surface of the bottom plate (1); the inner wall of the fixing groove (201) is slidably connected to the outer wall of the first slider (202); a clamping hole (203) is provided through the top surface of the first slider (202); and two first clamping plates (204) are arranged inside the clamping hole (203).

3. A torsion spring limiting mechanism according to claim 2, characterized in that: The outer walls of the two first clamping plates (204) are respectively fixedly mounted with pull rods (205), the other ends of the two pull rods (205) slide through the inner wall of the clamping hole (203) and extend to the outside of the first sliding block (202), one end of the two pull rods (205) is fixedly mounted with a pull plate (207), the outer walls of the two pull rods (205) are respectively slidably sleeved with springs (206), and the two ends of the two springs (206) are respectively fixedly connected to the inner wall of the clamping hole (203) and the outer walls of the two first clamping plates (204).

4. A torsion spring limiting mechanism according to claim 3, characterized in that: A connecting groove (208) is provided through the top surface of the pressure plate (102), a second slider (209) is slidably connected to the inner wall of the connecting groove (208), a clamping groove (210) is provided through the top surface of the second slider (209), a second clamping plate (211) is arranged inside the clamping groove (210), limiting plates (212) are respectively fixedly mounted on the outer walls at both ends of the second clamping plate (211), limiting grooves (213) are respectively provided on the inner walls at both sides of the clamping groove (210), and the outer walls of the two limiting plates (212) are respectively slidably connected to the inner walls of the two limiting grooves (213).

5. A torsion spring limiting mechanism according to claim 4, characterized in that: The outer wall of the upper end of the second clamping plate (211) is rotatably connected to a threaded rod (215); the inner wall of the clamping slot (210) is fixedly mounted with a fixing plate (214); the thread on the upper end of the threaded rod (215) penetrates the bottom surface of the fixing plate (214) and extends to above the fixing plate (214); and a handle (216) is fixedly mounted on the upper end of the threaded rod (215).

6. A torsion spring limiting mechanism according to claim 2, characterized in that: The top surface of the first sliding block (202) is provided with two first threaded holes (217); the inner wall of the fixing groove (201) is fixedly mounted with a mounting plate (218) via hexagonal bolts; the top surface of the mounting plate (218) is provided with two first sliding grooves (219); the inner walls of the two first sliding grooves (219) are respectively connected to the inner walls of the first threaded holes (217) via bolts; and the top surface of the mounting plate (218) is provided with a through groove (222).

7. A torsion spring limiting mechanism according to claim 4, characterized in that: The second sliding block (209) has two second threaded holes (221) on its top surface, the pressure plate (102) has two second slide grooves (220) on its top surface, the inner walls of the second slide grooves (220) are connected to the second threaded holes (221) via bolts, and the two ends of the torsion spring (104) are respectively connected to the inner walls of the clamping hole (203) and the inner walls of the clamping groove (210).

8. The torsion spring limiting mechanism according to claim 1, characterized in that: The connecting mechanism (3) comprises a rod core (301), a thread groove (302) is formed on the top surface of the bottom plate (1), the outer wall of the lower end of the rod core (301) is threadedly connected to the thread groove (302), a cylinder (303) is integrally mounted on the middle outer wall of the rod core (301), a bearing (304) is slidably mounted on the outer wall of the upper end of the rod core (301), the outer wall of the bearing (304) is fixedly connected to the inner wall of the pressing plate (102), and a nut (305) is meshedly connected to the outer wall of the upper end of the rod core (301).

9. A torsion spring inspection tool, characterized in that: It includes the torsion spring limiting mechanism described in any one of claims 1 to 8.

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