Constant force spring elastic force testing device

Abstract

The utility model relates to the technical field of constant force spring detection, specifically relates to a constant force spring elasticity testing device, including detection seat, the outer wall side end of detection seat is provided with moving plate, the outer wall side end of detection seat is provided with the test component that tests the elasticity of constant force spring between moving plate, in the utility model, through setting test component, can hold fixation to the both ends of constant force spring, then through the cooperation of adjusting screw rod and moving plate to the one end of constant force spring is moved and is stretched, then through setting tension sensor to detect the reaction force that generates when pulling constant force spring, in this way can measure the elasticity of constant force spring, the sleeve rod and sleeve block that set up simultaneously can conveniently personnel install and dismount constant force spring.

Description

Technical Field

[0001] This utility model relates to the field of constant force spring testing technology, specifically to a constant force spring elasticity testing device. Background Technology

[0002] A constant force spring, also known as a constant force spring or constant force spring, is a special type of spring designed to maintain a nearly constant spring force within a certain range, regardless of how far the spring is compressed or stretched. The main characteristic of this type of spring is that its output force remains almost constant with deformation, making it suitable for applications requiring a continuous, constant force.

[0003] Existing constant force springs, such as constant force coil springs, often require personnel to test their elasticity after production. However, the structural characteristics of coil springs make it inconvenient for personnel to fix them on the testing equipment, resulting in disassembly and assembly deficiencies when the testing equipment tests their elasticity. Therefore, existing constant force spring elasticity testing equipment still has certain shortcomings in use.

[0004] In conclusion, it is necessary to invent a constant force spring force testing device. Utility Model Content

[0005] Therefore, this utility model provides a constant force spring elasticity testing device to solve the problem that the structural characteristics of the spring itself make it inconvenient for personnel to fix it on the testing equipment, resulting in insufficient disassembly and assembly when the testing equipment performs elasticity testing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a constant force spring elasticity testing device, comprising a testing seat, a movable plate being provided on the outer wall side of the testing seat, and a testing component for testing the elasticity of the constant force spring being provided between the outer wall side of the testing seat and the movable plate.

[0007] Preferably, a support platform is fixed to the bottom of the outer wall of the detection seat, and a counterweight is provided at the top of the outer wall of the support platform and on one side of the support platform.

[0008] Preferably, the testing component includes an adjusting screw, one end of which is rotatably connected to the upper side of the outer wall of the moving plate. Through holes are provided on both sides of the outer wall of the testing seat at positions corresponding to the moving plate. The outer wall of the adjusting screw is slidably connected to the inner wall of the through hole.

[0009] Preferably, a threaded drum is rotatably connected to the outer wall of the detection seat on the side away from the moving plate and at the position corresponding to the through hole. The inner wall of the threaded drum is threadedly connected to the outer wall of the adjusting screw, and a drive motor is installed at the top of the outer wall of the detection seat.

[0010] Preferably, the output end of the drive motor is connected to the outer wall side of the threaded drum via a synchronous belt pulley mechanism, and a guide rod is fixed to the outer wall of the drive motor near the moving plate and above the adjusting screw.

[0011] Preferably, the outer walls of the movable plate are slidably connected to the outer walls of the guide rod through clearance holes on both sides. A tension sensor is fixed on the outer wall of the movable plate near the drive motor and located at the adjusting screw. A fixing head for fixing one end of a constant force spring is installed on the side end of the tension sensor.

[0012] Preferably, the drive motor has a fixing plate fixed to the front and rear sides of its outer wall at the same horizontal position as the tension sensor, and a sleeve rod is provided between the fixing plates. The top of the outer wall of the sleeve rod is fixed with a retaining shaft.

[0013] Preferably, each of the two fixed plates is rotatably connected to a sleeve block on one side opposite to the other, and each of the two sleeve blocks is slidably connected to a slot block on one side opposite to the other. A return spring is provided between the inner wall of the sleeve block and the insertion end of the slot block.

[0014] Preferably, each of the two slot blocks has a connecting slot on its outer wall side for inserting a fixing plate, and the outer wall side of the slot block is fixedly connected to the insertion end of the fixing plate by bolts.

[0015] Preferably, the outer wall of the slot block inserted into the sleeve block is fixed with a fixing plate on both the front and rear sides by a connecting rod, and the outer wall of the sleeve block is fixed to the fixing plate on the front and rear ends and the side closer to the slot block by a fixing connecting plate.

[0016] The beneficial effects of this utility model are: In this invention, the two ends of a constant force spring can be clamped and fixed by the set test components. Then, one end of the constant force spring can be moved and stretched by the cooperation of the adjusting screw and the moving plate. Next, the set tension sensor can detect the reaction force generated when the constant force spring is pulled, so as to measure the elastic force of the constant force spring. At the same time, the set sleeve rod and sleeve block can facilitate the installation and disassembly of the constant force spring, thus making it more convenient for personnel to test and use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention from the front view. Figure 2 This is a partial structural schematic diagram of the fixing plate in the side view of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4This is a side view of the cross-sectional structure of the sleeve block and slot block in this utility model; Figure 5 This is a three-dimensional structural diagram of the sleeve block and slot block in this utility model from a side view.

[0018] In the diagram: 100, detection seat; 110, support platform; 120, counterweight; 200, drive motor; 210, synchronous belt pulley mechanism; 220, threaded drum; 230, adjusting screw; 240, guide rod; 250, moving plate; 251, tension sensor; 252, fixed head; 260, fixed plate; 261, sleeve rod; 262, retaining shaft; 270, sleeve block; 271, slot block; 272, fixed dial plate; 273, return spring. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] See attached document Figures 1-5 The present invention provides a constant force spring elasticity testing device, including a testing seat 100, a support platform 110 for support is fixed at the bottom of the outer wall of the testing seat 100, and a counterweight block 120 for counterweight is provided at the top of the outer wall of the support platform 110 and on one side of the support platform 110. The counterweight block 120 is provided to balance the weight of the testing seat 100. A movable plate 250 is provided on the outer wall side of the testing seat 100. A test component for testing the elastic force of a constant force spring is provided between the outer wall side of the testing seat 100 and the movable plate 250. The test component includes an adjusting screw 230, one end of which is rotatably connected to the upper part of the outer wall side of the movable plate 250. Through holes are provided on both sides of the outer wall of the testing seat 100 at positions corresponding to the movable plate 250. The outer wall of the adjusting screw 230 is slidably connected to the inner wall of the through holes. A threaded drum 220 is rotatably connected to the outer wall of the testing seat 100 away from the movable plate 250 at a position corresponding to the through holes. The inner wall of the threaded drum 220 is connected to the adjusting screw 230. The screw 230 is threaded to the outer wall. A drive motor 200 is installed on the top of the outer wall of the detection seat 100. The output end of the drive motor 200 is connected to the outer wall side of the threaded drum 220 through a synchronous belt pulley mechanism 210. The synchronous belt pulley mechanism 210 includes two synchronous pulleys and a synchronous belt. The two synchronous pulleys are fixed to the output shaft of the drive motor 200 and the outer wall of the threaded drum 220, respectively. This allows the drive motor 200 to drive the threaded drum 220 to rotate in both directions through the synchronous belt pulley mechanism 210 when it is energized. When the threaded drum 220 rotates, it can drive the adjusting screw 230 to move along the through hole. A guide rod 240 is fixed to the outer wall of the drive motor 200 near the moving plate 250 and above the adjusting screw 230. The outer walls of the moving plate 250 are slidably connected to the outer walls of the guide rod 240 via clearance holes. The guide rod 240 serves a guiding function. A tension sensor 251 is fixed to the outer wall of the moving plate 250 near the drive motor 200 and above the adjusting screw 230. A fixing head 252 is installed on the side end of the tension sensor 251 to fix one end of a constant force spring. One end of the constant force coil spring can be fixed, and the tension sensor 251 can detect the magnitude of the elastic force when the constant force coil spring is stretched. The outer wall side of the drive motor 200 and the front and rear sides at the same horizontal position as the tension sensor 251 are fixed with fixing plates 260. A sleeve rod 261 is provided between the fixing plates 260. The top of the outer wall of the sleeve rod 261 is fixed with a retaining pin 262. The sleeve rod 261 can fix the other end of the constant force coil spring through the retaining pin 262. At the same time, the sleeve rod 261 can also facilitate the constant force coil spring to be wound around its outer wall. Two fixed plates 260 are rotatably connected to sleeve blocks 270 on opposite sides, and two sleeve blocks 270 are slidably connected to slot blocks 271 on opposite sides. Specifically, the sleeve blocks 270 and slot blocks 271 can be connected by a spline connection, allowing the slot blocks 271 to drive the sleeve blocks 270 to rotate. A return spring 273 is provided between the inner wall of the sleeve block 270 and the insertion end of the slot block 271. The return spring 273 is provided to allow the slot block 271 to slide outward through elastic force. Each outer wall of the two slot blocks 271 has a connecting slot for the fixed plates 260 to be inserted. The outer wall of block 271 is fixedly connected to the insertion end of fixing plate 260 by bolts. The slot block 271 can be inserted into both ends of sleeve rod 261 by setting a connecting slot, so that personnel can easily fix both ends of sleeve rod 261. The front and rear sides of the outer wall of the end of slot block 271 inserted into sleeve block 270 are fixed with fixing plates 272 by connecting rods. The front and rear ends of the outer wall of sleeve block 270 and the side close to slot block 271 are fixed with fixing plates 272 by fixing connecting plates. The fixing plates 272 and fixing connecting plates can be fixed with bolts to ensure the stability of slot block 271 clamping sleeve rod 261.

[0021] The usage process of this utility model is as follows: Those skilled in the art can first assemble the device according to the above description, then connect all electrical equipment to an external power supply, and control the operation of the device through an external controller. The control programs of all electrical equipment are edited by the production personnel in advance before production. This utility model does not make any technical improvements here, but only assumes that it can normally meet the needs of personnel. First, the operator can remove the sleeve 261 that matches the constant force coil spring to be tested and place it into the connecting slot in the slot block 271. Then, the fixing plate 272 is fixed to the fixing connecting plate with bolts, so that the slot block 271 can tighten and fix both ends of the sleeve 261. Next, the operator can remove the constant force coil spring and wind one end around the sleeve 261, and fix one end of the constant force coil spring with the retaining pin 262. Then, the other end of the constant force coil spring is fixed to the fixing head 252 with bolts. After completion, the moving plate 250 is moved to put the constant force coil spring into a coiled state. Then, the equipment is zeroed, and the operator can then turn on the power. The drive motor 200 drives the threaded drum 220 to rotate via the synchronous belt pulley mechanism 210. The rotating threaded drum 220 drives the adjusting screw 230 through a threaded connection, which in turn moves the moving plate 250 to the side away from the detection seat 100. The constant force coil spring is gradually stretched. The display screen (not shown in the figure) located at the front end of the outer wall of the detection seat 100 is connected to the tension sensor 251 via a data cable, so that the tension measured by the tension sensor 251 can be transmitted to the display screen. Personnel can view the change in the elastic force of the moving plate 250 when it pulls the constant force coil spring through the display screen, thereby detecting the magnitude of the elastic force of the constant force coil spring.

[0022] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A constant force spring force testing device, characterized in that: The device includes a test seat (100), a movable plate (250) is provided on the outer wall side of the test seat (100), and a test component for testing the elastic force of a constant force spring is provided between the outer wall side of the test seat (100) and the movable plate (250).

2. The constant force spring force testing device according to claim 1, characterized in that: The bottom of the outer wall of the detection seat (100) is fixed with a support platform (110) for support, and a counterweight block (120) for counterweight is provided at the top of the outer wall of the support platform (110) and on one side of the support platform (110).

3. The constant force spring force testing device according to claim 1, characterized in that: The test component includes an adjusting screw (230), one end of which is rotatably connected to the upper side of the outer wall of the moving plate (250). Through holes are provided on both sides of the outer wall of the test seat (100) and at positions corresponding to the moving plate (250). The outer wall of the adjusting screw (230) is slidably connected to the inner wall of the through hole.

4. The constant force spring force testing device according to claim 3, characterized in that: The detection seat (100) is rotatably connected to a threaded drum (220) on the outer wall of the side away from the moving plate (250) and at the position corresponding to the through hole. The inner wall of the threaded drum (220) is threadedly connected to the outer wall of the adjusting screw (230). A drive motor (200) is installed at the top of the outer wall of the detection seat (100).

5. The constant force spring force testing device according to claim 4, characterized in that: The output end of the drive motor (200) is connected to the outer wall side of the threaded drum (220) via a synchronous belt pulley mechanism (210). The drive motor (200) is fixed with a guide rod (240) on the outer wall side near the moving plate (250) and above the adjusting screw (230).

6. The constant force spring force testing device according to claim 5, characterized in that: The outer walls of the movable plate (250) are slidably connected to the outer walls of the guide rod (240) through clearance holes on both sides. A tension sensor (251) is fixed on the outer wall of the movable plate (250) near the drive motor (200) and located on the adjusting screw (230). A fixing head (252) for fixing one end of a constant force spring is installed on the side end of the tension sensor (251).

7. A constant force spring force testing device according to claim 6, characterized in that: The drive motor (200) has a fixing plate (260) fixed on the front and rear sides of the outer wall side at the same horizontal position as the tension sensor (251). A sleeve rod (261) is provided between the fixing plates (260), and a retaining pin (262) is fixed on the top of the outer wall of the sleeve rod (261).

8. A constant force spring force testing device according to claim 7, characterized in that: Each of the two fixed plates (260) is rotatably connected to a sleeve block (270) on one side opposite to the other, and each of the two sleeve blocks (270) is slidably connected to a slot block (271) on one side opposite to the other. A return spring (273) is provided between the inner wall of the sleeve block (270) and the insertion end of the slot block (271).

9. A constant force spring force testing device according to claim 8, characterized in that: Both slot blocks (271) have connection slots on their outer wall sides for inserting the fixing plate (260). The outer wall sides of the slot blocks (271) are fixedly connected to the insertion end of the fixing plate (260) by bolts.

10. A constant force spring force testing device according to claim 9, characterized in that: The slot block (271) is inserted into the sleeve block (270) at one end of the outer wall and the front and rear sides are fixed with a fixing plate (272) by a connecting rod. The front and rear ends of the outer wall of the sleeve block (270) and the side close to the slot block (271) are fixed with the fixing plate (272) by a fixing connecting plate.

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