Elastic coefficient testing mechanism for spring
By designing the spring elastic coefficient testing mechanism, the problem of difficulty in detecting spring elastic coefficient in the existing technology is solved, and fast and accurate spring detection is achieved, adapting to springs of different sizes, which is convenient and practical.
Patent Information
- Application Number
- CN202422615041.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The prior art is difficult to quickly and accurately detect the elastic coefficient of the spring, affecting the stiffness, load-bearing capacity and life of the spring.
A spring elastic coefficient test mechanism is designed, which includes a positioning assembly and a test assembly. One end of the spring is fixed by the positioning assembly, the test assembly pulls the other end, and the spring elastic force and deformation amount is measured using a driving motor, an urging rod and a pressure tester to calculate the elastic coefficient.
It realizes the rapid and accurate detection of the elastic coefficient of the spring, ensuring the applicability of the spring, convenient and practical, adapting to springs of different sizes, and ingenious structure.
Smart Images
Figure CN223259196U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of spring testing, in particular to a spring elastic coefficient testing mechanism. Background Art
[0002] A spring is a mechanical component that can store energy and deform when subjected to an external force. When the external force is removed, it can return to its original shape. Springs include compression springs, extension springs, torsion springs, flat springs, wave springs, and coil springs. The elastic constant of a spring, also known as the stiffness coefficient or stiffness coefficient, is a physical quantity that describes the relationship between the elastic force and the deformation of the spring within its elastic limit. Specifically, the elastic constant refers to the ratio of the stress to the strain generated by the spring per unit length, usually expressed as the ratio of the shear stress to the deformation of the spring. According to Hooke's law, the elastic constant is equal to the ratio of the force per unit length of the spring to its corresponding deformation, which is the expression responsible for the derivation of the author.
[0003] However, the elastic coefficient of the spring will change with the passage of time. This change is mainly caused by material fatigue and aging, temperature changes, corrosion, load influence and use environment. The change of the spring elastic coefficient will greatly affect the stiffness and deformation of the spring, the bearing capacity and life of the spring, as well as the stress distribution and stability of the spring. Therefore, after the spring has been used for a period of time, the elastic coefficient of the spring needs to be tested in time. Therefore, it is necessary to develop a detection device that can detect the elastic coefficient of the spring in a timely and quick manner. Summary of the Invention
[0004] The purpose of the utility model is to provide a spring elastic coefficient testing mechanism, which has an ingenious structure and can comprehensively and efficiently detect the length and stress of the spring, thereby obtaining the elastic coefficient of the spring, and is convenient and practical.
[0005] The cam is fixed to the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, and the cam is fixed on the workbench, The adjusting screw hole is adapted to engage the adjusting screw hole and the adjusting screw hole is adapted to engage the adjusting screw hole on the adjusting rod, and the adjusting screw hole is adapted to engage the adjusting screw hole and the adjusting screw hole.
[0006] The cam is fixed with a screw thread on the top of the fixing seat, and one end of the fixing seat is connected to the fixing seat in a rotating manner, and the other end of the fixing seat extends out of the fixing seat, and a rotating handle is fixed on the end of the fixing seat extending out of the fixing seat. The axis of the rotating groove is arranged perpendicular to the working platform. The fixing seat is provided with a positioning groove, and the positioning groove is provided with a connecting slide corresponding to each pressure block. The positioning groove is connected with the rotating groove through each connecting slide groove, and one end of each pressure block is fixedly connected with the positioning slider after passing through the connecting slide groove. The pressure groove on each pressure block slides relatively through the threaded cooperation of the stud screw and the threaded inner hole, and the sliding cooperation of the pressure block and the connecting slide groove to press one end of the spring against the fixing seat.
[0007] Furthermore, a side groove corresponding to each connecting groove is provided on the end face of the above-mentioned fixed seat away from the positioning groove, and a connecting screw passing through the side groove is fixed on each positioning slider, and a locking nut is provided on each connecting screw. After sliding, each positioning slider is fixed to the fixed seat through the threaded cooperation of the locking nut and the connecting screw.
[0008] Furthermore, each pressure block includes a connecting body, a first limiting rod and a second limiting rod integrally formed with the connecting body, the first limiting rod and the second limiting rod are arranged in parallel, the extension directions of the first limiting rod and the second limiting rod are both arranged perpendicular to the working platform, the length of the first limiting rod is greater than the length of the second limiting rod, the first limiting rod, the second limiting rod and the connecting body form a groove for pressing one end of the spring, and the first limiting rod, the second limiting rod and the pressing groove are all provided with rounded chamfers.
[0009] Furthermore, each mounting groove is provided with a positioning block, the positioning block is provided with a threaded mounting hole, and the bottom of each force rod is fixed with a threaded mounting rod, and the force rod is detachably fixed to the positioning block through the threaded cooperation of each threaded mounting rod and the threaded mounting hole, and a limiting slide is provided in the mounting groove, and the extension direction of the limiting slide is set parallel to the axis of the adjusting rod, and a limiting slider is fixed at the bottom of the positioning block, and the positioning block is slidably connected in the mounting groove through the cooperation of the limiting slider and the limiting slide, and the positioning block is pressed against the pressure tester by the cooperation of the limiting slider and the limiting slide, and the driving motor drives the moving seat to detect the tension exerted on the spring.
[0010] The utility model has positive effects: (1) The utility model sets a positioning component and a test component on the working platform, presses and positions one end of the spring by the positioning component, fixes each positioning slider and the pressure block on the positioning slider to one end of the spring by a double-headed screw, can fix one end of the spring on the one hand, and can adapt to springs of various sizes by driving the positioning slider by the double-headed screw, sets a test component on the working platform, adapts to springs of various lengths by cooperating with the adjusting threaded portion and the adjusting screw hole on the adjusting rod, presses the spring by the force rod, obtains the elastic force of the spring by the pressure tester, obtains the deformation of the spring length by the change of the scale, obtains the elastic coefficient of the spring by the ratio of the measured spring force and the deformation of the spring, and obtains whether the spring can continue to be used by comparing the elastic coefficient with the standard elastic coefficient, can quickly and accurately detect the elastic force and elongation of the spring, and can also accurately obtain the elastic coefficient of the spring, so as to screen the spring, with a clever structure and convenient and practical application.
[0011] (2) The utility model provides a double-headed screw on the fixed seat, and drives the double-headed screw by turning the handle to drive the positioning sliders to move relative or oppositely in synchronization. It can be adjusted in time according to the size of the spring, so as to be suitable for springs of various sizes. At the same time, it can also ensure that one end of the spring is firmly pressed, which is convenient and practical.
[0012] (3) The utility model provides a side groove on the fixed seat. After the connecting screw passes through the side groove, it cooperates with the locking nut to ensure the stability of the positioning slider and the pressure block on the positioning slider after being pressed against one end of the spring. It is convenient and practical.
[0013] (4) The present invention ensures that the formed pressing groove can stably and firmly press one end of the spring and prevent one end of the spring from being separated from the fixing seat by setting the pressing block to cooperate with the first limiting rod and the second limiting rod, and setting the length of the first limiting rod to be greater than the length of the second limiting rod, thereby ensuring the stability of the connection between the spring and the fixing seat.
[0014] (5) The utility model sets a limit slide in the installation groove, and the positioning block is slidably connected in the installation groove through the cooperation of the limit slider and the limit slide. The initial position of the force rod can be adjusted by the cooperation of the limit slider and the limit slide. It can not only adapt to the size of the force rod adjusted according to the size of various springs, but also ensure the accuracy of the adjustment of the initial position through the force of the spring on the force rod and the pressure of the force rod on the pressure tester, further laying the foundation for the subsequent detection of the elastic force of the spring and the calculation of the elastic coefficient. The structure is ingenious and stable and practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein
[0016] Figure 1 This is a front view of the overall structure of the spring tension testing mechanism in the present utility model;
[0017] Figure 2 This is a cross-sectional view of the overall structure of the connection between the moving seat and the working platform in the present utility model;
[0018] Figure 3 It is a cross-sectional view of the overall structure of the fixing seat in the present utility model;
[0019] Figure 4 It is a cross-sectional view of the connection structure of the positioning slider, the pressure block, and the connecting screw in the utility model;
[0020] Figure 5 It is a cross-sectional view of the overall structure of the movable seat in the present utility model;
[0021] Figure 6 for Figure 5 Enlarged view of point A in the middle;
[0022] Figure 7 It is a side view of the overall structure of the movable seat in the utility model. DETAILED DESCRIPTION
[0023] See Figures 1 to 7 The utility model has a working platform 1; the working platform 1 is provided with a positioning component 3 that can fix one end of the spring, and a testing component 5 that can pull the other end of the spring, the positioning component 3 includes a fixing seat 2, a double-headed screw 31 rotatably connected to the fixing seat 2, a positioning slider 32 that is relatively slidably arranged on the fixing seat 2 under the drive of the double-headed screw 31, and a pressing block 33 fixed on each positioning slider 32 and capable of positioning and pressing one end of the spring, the axis of the double-headed screw 31 is perpendicular to the working platform 1, and the positioning slider 32 is relatively slidably arranged on the fixing seat 2 under the drive of the double-headed screw 31, and the pressing block 33 is fixed on each positioning slider 32 and can press one end of the spring. The block 32 is provided with a threaded inner hole 35 adapted to the double-headed screw 31, and each pressure block 33 is provided with a pressure groove 34, and the pressure grooves 34 on each pressure block 33 are arranged relatively. The test assembly 5 includes a driving motor 51 fixed on the working platform 1, a moving seat 4 slidably connected to the working platform 1 under the drive of the driving motor 51, an adjusting rod 53 arranged on the moving seat 4, two mounting grooves 54 relatively arranged on the adjusting rod 53, a force rod 55 slidably connected to each mounting groove 54, and a force rod 55 arranged in the mounting groove 54 and connected to the force rod 55 is adapted to a pressure tester 56, the adjusting rod 53 is provided with an adjusting threaded portion 531, the movable seat 4 is provided with an adjusting screw hole 41 adapted to the adjusting threaded portion 531 on the adjusting rod 53, the adjusting rod 53 is further provided with a stop ring 57 coaxially arranged with the adjusting rod 53, the setting of the stop ring 57 can limit the initial position of the adjusting rod 53 on the one hand, and on the other hand, can also lock the spring when the spring is installed, the stop ring 57 is arranged between the movable seat 4 and the force rod 55, and the side of the working platform 1 is provided with a scale 11, An indicator plate 43 that can point to the scale 11 is fixed on the side of the movable seat 4. Each pressure block 33 fixes one end of the spring through the threaded cooperation of the double-headed screw 31 and the positioning slider 32. After each force rod 55 passes through the spring, it presses and positions the other end of the spring through the cooperation of the adjusting screw hole 41 and the adjusting threaded portion 531. Each force rod 55 tests the tension of the spring by driving the movable seat 4 through the driving motor 51 and pressing the pressure tester 56. The indicator plate 43 obtains the stretched length of the tension spring by pointing to the scale 11.
[0024] The cam 32 is fixedly provided with a rotation slot 22 for the double-headed screw 31 to rotate, and one end of the double-headed screw 31 is rotatably connected to the rotation slot 22, and the other end of the double-headed screw 31 extends out of the rotation slot 22, and the end of the double-headed screw 31 extending out of the rotation slot 22 is fixedly provided with a rotation handle 38. The axis of the rotation slot 22 is perpendicular to the working platform 1. The fixed seat 2 is provided with a positioning slot 21, and the positioning slot 21 is provided with a connecting slide 23 corresponding to each pressure block 33. The positioning slot 21 is connected with the rotation slot 22 through each connecting slide 23. One end of each pressure block 33 passes through the connecting slide 23 and is fixedly connected to the positioning slider 32. The pressure groove 34 on each pressure block 33 slides relatively and fixes one end of the spring by the threaded cooperation of the double-headed screw 31 and the threaded inner hole 35, and the sliding cooperation of the pressure block 33 and the connecting slide 23.
[0025] The end surface of the fixing seat 2 away from the positioning groove 21 is provided with a side groove 24 corresponding to each connecting groove 23, and each positioning slider 32 is fixed with a connecting screw 36 that passes through the side groove 24, and each connecting screw 36 is equipped with a locking nut 37. After sliding, each positioning slider 32 is fixed to the fixing seat 2 through the threaded cooperation of the locking nut 37 and the connecting screw 36.
[0026] Each pressure block 33 includes a connecting body 331, a first limiting rod 332 and a second limiting rod 333 integrally formed with the connecting body 331, the first limiting rod 332 and the second limiting rod 333 are arranged in parallel, and the extension directions of the first limiting rod 332 and the second limiting rod 333 are both arranged perpendicular to the working platform 1, the length of the first limiting rod 332 is greater than the length of the second limiting rod 333, the first limiting rod 332, the second limiting rod 333 and the connecting body 331 form a pressure groove 34 for one end of the spring, and the first limiting rod 332, the second limiting rod 333 and the pressure groove 34 are all provided with rounded chamfers. The setting of the rounded chamfers can effectively prevent the first limiting rod 332 and the second limiting rod 333 from leaving indentations on the spring, thereby ensuring the beauty and integrity of the spring appearance.
[0027] Each mounting groove 54 is provided with a positioning block 58, and a threaded mounting hole 581 is provided on the positioning block 58. A threaded mounting rod 551 is fixedly provided at the bottom of each force rod 55, and the force rod 55 is detachably fixed to the positioning block 58 through the threaded cooperation between each threaded mounting rod 551 and the threaded mounting hole 581. A limiting slide 541 is provided in the mounting groove 54, and the extension direction of the limiting slide 541 is arranged parallel to the axis of the adjusting rod 53. A limiting slider 552 is fixedly provided at the bottom of the positioning block 58, and the positioning block 58 is slidably connected in the mounting groove 54 through the cooperation of the limiting slider 552 and the limiting slide 541. The positioning block 58 is pressed against the pressure tester 56 by the cooperation of the limiting slider 552 and the limiting slide 541, and the driving motor 51 drives the movable seat 4 to detect the tension exerted on the spring.
[0028] The working principle of the present invention: When using the present invention, the two ends of the spring are installed first. During the installation process, one end of the spring is first inserted into the relative pressure groove 34 of the pressure block 33, and then the operator rotates the rotating handle 38 on the double-headed screw 31 to clamp one end of the spring. Then, the connecting screw 36 on each positioning slider 32 is fixed by the threaded engagement with the locking nut 37, thereby fixing a section of the spring. At the other end of the spring, the operator can extend the adjusting screw portion on the adjusting rod 53 into the spring through the engagement with the adjusting screw hole 41 on the movable seat 4, and then install the spring through the threaded engagement at the bottom of the force applying rod 55. The rod 551 cooperates with the threaded mounting hole 581 on the positioning block 58 to install the force rod 55 detachably. The force rod 55 can be adjusted and replaced according to the size of the spring. After the force rod 55 is installed, the operator can start to calibrate the initial position by adjusting the initial position of the movable seat 4 by adjusting the drive motor 51. At this time, the spring is in an unstressed state, and the pressure tester 56 can be connected to an external display device. The reading of the pressure tester 56 is displayed as zero, and the scale 11 at the initial position is recorded. Then the drive motor 51 starts to drive the movable seat 4 to start moving on the working platform 1. The working platform 1 is provided with a device parallel to the axis of the adjustment rod 53. The bottom slide 12 is provided with a bottom screw 52 which is rotated in the bottom slide 12. The output end of the drive motor 51 is fixedly connected to the bottom screw 52. The bottom of the moving seat 4 is fixedly provided with a bottom slider 42 which is slidably arranged in the bottom slide 12. The bottom slider 42 is provided with a screw hole for the bottom screw 52 to pass through and threadedly cooperate with. The moving seat 4 moves at a uniform speed on the working platform 1 through the driving motor 51 to drive the bottom screw 52, the threaded cooperation between the bottom screw 52 and the screw hole on the bottom slider 42, and the cooperation between the bottom slider 42 and the bottom slide 12. During the movement of the moving seat 4, the force rod 55 pulls the spring, and the elasticity of the spring itself will exert force on the force rod 5. 5 acts in the reverse direction, and the force-applying rod 55 is pressed against the pressure tester 56. The pressure tester 56 measures the pressure value of the spring under uniform movement. When the indicator plate 43 on the movable seat 4 moves to the set length, the value on the pressure tester 56 is observed, and the elastic coefficient of the spring is obtained by the ratio of the pressure value on the pressure tester 56 to the set length, and compared with the standard elastic coefficient. If the calculated elastic coefficient is within the range of the standard elastic coefficient, the spring can continue to be used. If the elastic coefficient of the spring exceeds or is less than the range of the standard elastic coefficient, the spring needs to be discarded. The elastic coefficient of the spring can be tested conveniently, accurately and efficiently, and the structure is ingenious, convenient and practical.
[0029] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A spring elastic coefficient testing mechanism having a working platform; characterized in that: The working platform is provided with a positioning component that can fix one end of the spring, and a testing component that can pull the other end of the spring. The positioning component includes a fixed seat, a double-headed screw rotatably connected to the fixed seat, a positioning slider relatively slidably arranged on the fixed seat under the drive of the double-headed screw, and a pressure block fixed on each positioning slider and capable of positioning and pressing one end of the spring. The axis of the double-headed screw is perpendicular to the working platform, the positioning slider is provided with a threaded inner hole adapted for the double-headed screw, each pressure block is provided with a pressure groove, and the pressure grooves on each pressure block are relatively arranged. The testing component includes a driving motor fixed to the working platform, a moving seat slidably connected to the working platform under the drive of the driving motor, an adjusting rod arranged on the moving seat, two mounting slots relatively arranged on the adjusting rod, a The adjusting screw hole is adapted to engage the adjusting screw portion on the adjusting rod, and the adjusting screw hole is adapted to engage the adjusting screw portion on the adjusting rod. The adjusting rod is further provided with a stop ring coaxially arranged with the adjusting rod, and the stop ring is arranged between the moving seat and the force applying rod. A scale is provided on the side of the working platform, and an indicator plate that can point to the scale is fixed on the side of the moving seat. Each pressure block fixes one end of the spring through the threaded cooperation of the double-headed screw and the positioning slider. After each force applying rod passes through the spring, it presses and positions the other end of the spring through the cooperation of the adjusting screw hole and the adjusting threaded portion. Each force applying rod tests the tension of the spring by driving the moving seat with a driving motor and pressing the pressure tester, and the indicator plate obtains the stretched length of the tension spring by pointing to the scale.
2. A spring elasticity coefficient testing mechanism according to claim 1, characterized in that: The fixing seat is fixed with a rotating groove for allowing a double-headed screw to rotate, and one end of the double-headed screw is rotatably connected to the rotating groove, and the other end of the double-headed screw extends out of the rotating groove, and a rotating handle is fixed on the end of the double-headed screw extending out of the rotating groove, and the axis of the rotating groove is perpendicular to the working platform. The fixing seat is provided with a positioning groove, and the positioning groove is provided with a connecting slide corresponding to each pressure block, and the positioning groove is connected with the rotating groove through each connecting slide groove, and one end of each pressure block is fixedly connected with the positioning slider after passing through the connecting slide groove, and the pressure groove on each pressure block slides relatively through the threaded cooperation of the double-headed screw and the threaded inner hole, and the sliding cooperation of the pressure block and the connecting slide groove to press one end of the spring against and fix it.
3. A spring elasticity coefficient testing mechanism according to claim 2, characterized in that: The end surface of the fixed seat away from the positioning groove is provided with a side slide groove corresponding to each connecting slide groove, and each positioning slider is fixed with a connecting screw that passes through the side slide groove, and each connecting screw is equipped with a locking nut. After sliding, each positioning slider is fixed to the fixed seat through the threaded cooperation of the locking nut and the connecting screw.
4. A spring elasticity coefficient testing mechanism according to claim 3, characterized in that: Each pressure block includes a connecting body, a first limiting rod and a second limiting rod integrally formed with the connecting body, the first limiting rod and the second limiting rod are arranged in parallel, the extension directions of the first limiting rod and the second limiting rod are both arranged perpendicular to the working platform, the length of the first limiting rod is greater than the length of the second limiting rod, the first limiting rod, the second limiting rod and the connecting body form a groove for pressing one end of the spring, and the first limiting rod, the second limiting rod and the pressing groove are all provided with round chamfers.
5. A spring elasticity coefficient testing mechanism according to claim 4, characterized in that: A positioning block is provided in each mounting groove, and the positioning block is provided with a threaded mounting hole. A threaded mounting rod is fixedly provided at the bottom of each force rod, and the force rod is detachably fixed to the positioning block through the threaded cooperation of each threaded mounting rod and the threaded mounting hole. A limiting slide is provided in the mounting groove, and the extension direction of the limiting slide is arranged parallel to the axis of the adjusting rod. A limiting slider is fixedly provided at the bottom of the positioning block, and the positioning block is slidably connected to the mounting groove through the cooperation of the limiting slider and the limiting slide. The positioning block is pressed against the pressure tester to detect the tension exerted on the spring through the cooperation of the limiting slider and the limiting slide, and the driving motor drives the moving seat.