High-precision dynamic strain gauge
By introducing positioning and relaxation components into the dynamic strain gauge, and utilizing the matching of the mating block and the mating groove and the elasticity of the spring, the problem of unstable cable connection under high-frequency vibration is solved, achieving high-precision detection stability and ease of operation.
Patent Information
- Application Number
- CN202520608739.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-02
AI Technical Summary
In high-frequency vibration environments, the connection stability between the cable and the dynamic strain gauge is affected, leading to unstable detection.
A high-precision dynamic strain gauge was designed, which adopts a combination structure of positioning components and relaxation components. The male head and female seat are stably locked together by matching the docking block and docking groove. The elastic force of compression spring and return spring ensures the stability of the connection and the ease of operation.
A stable connection between the male and female heads was achieved under high-frequency vibration conditions, ensuring the stability of the test, and the connection could be quickly locked and released through simple manual operation.
Smart Images
Figure CN223841126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dynamic strain gauge technology, and more specifically to a high-precision dynamic strain gauge. Background Technology
[0002] A dynamic strain gauge is an instrument used to measure strain changes in materials and structures under dynamic and static conditions. It mainly consists of a bridge circuit, amplifier, phase-sensitive detector, filter, oscillator, and power supply.
[0003] When using a dynamic strain gauge, the operator needs to connect one end of the cable to the strain gauge, and the other end of the cable is equipped with a sensor (resistance strain gauge). By attaching the sensor to the surface of the object, the strain caused by the deformation of the object under force can be detected. However, in some testing environments, the object is in a state of high-frequency vibration, which will affect the stability of the connection between the cable end and the dynamic strain gauge, and interfere with the normal testing of the dynamic strain gauge. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-precision dynamic strain gauge to solve the problems existing in the background art.
[0005] This utility model provides the following technical solution: a high-precision dynamic strain gauge, including a dynamic strain gauge and a transmission cable. A female base is provided on one side of the dynamic strain gauge, a sensor is provided at one end of the transmission cable, and a male head is provided at the other end of the transmission cable. The male head matches the female base. A positioning component is provided at one end of the female base, and a relaxation component is provided on the surface of the female base. The positioning component is used to lock the male head and the female base in place, and the relaxation component is used to release the positioning between the male head and the female base.
[0006] Preferably, two positioning components are symmetrically arranged. Each positioning component includes a through hole and a sliding rod. The through hole is opened through the female seat. A docking block is arranged in the through hole. A guide block is fixedly connected to the side of the docking block away from the center of the female seat. A sliding block is fixedly connected to the surface of the docking block, and two sliding blocks are arranged on each docking block.
[0007] Preferably, the through hole extends inward and is provided with a limiting step. Each through hole is provided with two sliding rods. One end of the sliding rod is fixedly connected to the limiting step, and the other end of the sliding rod is fixedly connected to a limiting block. The sliding block is sleeved on the surface of the sliding rod, and a compression spring is sleeved on the surface of the sliding rod. The elastic force of the compression spring drives the sliding block to move away from the limiting block.
[0008] Preferably, the relaxation component includes a sleeve, an extension ring fixedly connected to one end of the sleeve, a guide block with a T-shaped block structure fixedly connected to the inner side of the sleeve, and multiple guide blocks evenly arranged. The surface of the female seat is provided with a guide groove with a T-shaped groove structure, and multiple guide grooves are provided corresponding to the guide blocks. The surface of the guide block is slidably connected to the groove wall of the guide groove. A fixing ring is fixedly connected to the surface of the female seat, and a return spring is sleeved on the surface of the female seat. One end of the return spring is fixedly connected to the fixing ring, and the other end of the return spring is fixedly connected to the extension ring.
[0009] Preferably, the guide block has an abutting plane on the side opposite to the docking block, and the guide block also has a second inclined surface, while the extension ring has a first inclined surface, and the first inclined surface matches the second inclined surface.
[0010] Preferably, a reference block is fixedly connected to the male head surface, a reference groove is opened at one end of the female seat, the reference groove matches the reference block, and a docking groove is also opened on the male head surface. Each male head surface is provided with two docking grooves, and the docking groove matches the docking block.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] The operator can manually push the sleeve to retract the mating block into the through hole, then align the reference block with the reference groove to insert the male end into the female seat, and then release the sleeve. The spring force of the return spring is released, driving the extension ring to contact the contact surface, so that the spring force of the compression spring cannot be released, the position of the mating block remains fixed, and at this time the mating block enters the mating groove. This utility model solves the shortcomings of the prior art. Through the mutual cooperation of the mating block and the mating groove, the male end and the female seat can be locked and fixed, ensuring the stability of the connection. In addition, when locking and unlocking, the operator only needs to push the sleeve by hand, which is simple and quick to operate. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a cross-sectional view of the female seat of this utility model.
[0015] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the image.
[0016] Figure 4 This is a schematic diagram of the docking block and guide block structure of this utility model.
[0017] Figure 5 This is a cross-sectional view of the sleeve of this utility model.
[0018] Figure 6This is a schematic diagram of the male head structure of this utility model.
[0019] The attached figures are labeled as follows: 1. Dynamic strain gauge; 2. Female seat; 21. Reference groove; 22. Guide groove; 3. Transmission cable; 31. Male head; 311. Butt groove; 312. Reference block; 4. Positioning component; 41. Through hole; 411. Limiting step; 42. Butt block; 43. Guide block; 431. Inclined surface two; 432. Contact plane; 44. Sliding block; 45. Sliding rod; 451. Limiting block; 46. Compression spring; 5. Relaxation component; 51. Sleeve; 52. Extension ring; 521. Inclined surface one; 53. Guide block; 54. Return spring; 55. Fixing ring. Detailed Implementation
[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The high-precision dynamic strain gauge involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] This utility model provides a high-precision dynamic strain gauge, including a dynamic strain gauge 1 and a transmission cable 3. A female seat 2 is provided on one side of the dynamic strain gauge 1. A sensor is provided at one end of the transmission cable 3 and a male head 31 is provided at the other end of the transmission cable 3. The male head 31 matches the female seat 2. A positioning component 4 is provided at one end of the female seat 2 and a relaxation component 5 is provided on the surface of the female seat 2. The positioning component 4 is used to lock the male head 31 and the female seat 2 in place, and the relaxation component 5 is used to release the positioning between the male head 31 and the female seat 2.
[0022] Furthermore, two positioning components 4 are symmetrically arranged. The positioning component 4 includes a through hole 41 and a sliding rod 45. The through hole 41 is opened through the female seat 2. A docking block 42 is provided in the through hole 41. A guide block 43 is fixedly connected to the side of the docking block 42 away from the center of the female seat 2. A sliding block 44 is fixedly connected to the surface of the docking block 42, and two sliding blocks 44 are provided on each docking block 42. A limiting step 411 is provided extending inward from the through hole 41. Two sliding rods 45 are provided in each through hole 41. One end of the sliding rod 45 is fixedly connected to the limiting step 411, and the other end of the sliding rod 45 is fixedly connected to the limiting block 451. The sliding block 44 is sleeved on the surface of the sliding rod 45. The sliding block 44 and the sliding rod 45 form a sliding guide fit along the axis of the sliding rod 45. A compression spring 46 is sleeved on the surface of the sliding rod 45. The elastic force of the compression spring 46 drives the sliding block 44 to move away from the limiting block 451.
[0023] Furthermore, the relaxation component 5 includes a sleeve 51, with an extension ring 52 fixedly connected to one end of the sleeve 51. A guide block 53 with a T-shaped block structure is fixedly connected to the inner side of the sleeve 51. Multiple guide blocks 53 are evenly arranged. A guide groove 22 with a T-shaped groove structure is opened on the surface of the female seat 2. Multiple guide grooves 22 are arranged corresponding to the guide blocks 53. The surface of the guide block 53 is slidably connected to the groove wall of the guide groove 22. The guide block 53 and the guide groove 22 cooperate with each other to ensure the stability of the movement of the sleeve 51. A fixing ring 55 is fixedly connected to the surface of the female seat 2. A return spring 54 is sleeved on the surface of the female seat 2. One end of the return spring 54 is fixedly connected to the fixing ring 55, and the other end of the return spring 54 is fixedly connected to the extension ring 52. The elastic force of the return spring 54 can drive the extension ring 52 to move away from the fixing ring 55.
[0024] Furthermore, the guide block 43 has a contact surface 432 on the side away from the docking block 42, and the guide block 43 also has a second inclined surface 431. The extension ring 52 has a first inclined surface 521, which matches the second inclined surface 431. When the extension ring 52 moves away from the fixed ring 55, the first inclined surface 521 first contacts the second inclined surface 431, and under the pressure of the first inclined surface 521, the sliding block 44 moves along the sliding rod 45 towards the limit block 451.
[0025] Furthermore, a reference block 312 is fixedly connected to the surface of the male head 31, and a reference groove 21 is opened at one end of the female seat 2. The reference groove 21 matches the reference block 312. A docking groove 311 is also opened on the surface of the male head 31. Each male head 31 has two docking grooves 311 on its surface. The docking groove 311 matches the docking block 42. When the docking block 42 enters the docking groove 311, the docking block 42 and the docking groove 311 cooperate with each other to lock and fix the male head 31 and the female seat 2.
[0026] The working principle of this utility model is as follows: The operator pushes the sleeve 51 by hand to make the extension ring 52 move towards the fixed ring 55. The return spring 54 contracts and increases its elasticity under the compression of the extension ring 52 and the fixed ring 55. At the same time, the guide block 53 slides synchronously along the guide groove 22. The extension ring 52 releases the compression of the contact surface 432. The elasticity of the compression spring 46 is released and drives the sliding block 44 to move away from the limit block 451 along the sliding rod 45. The docking block 42 also gradually retracts into the through hole 41.
[0027] The operator aligns the reference block 312 with the reference groove 21 and inserts the reference block 312 into the reference groove 21. At this time, the male head 31 is inserted into the female seat 2. The operator releases the sleeve 51, and the elastic force of the return spring 54 is released, driving the extension ring 52 to move away from the fixed ring 55. The first inclined surface 521 on the extension ring 52 first contacts the second inclined surface 431. Under the compression of the first inclined surface 521, the sliding block 44 moves along the sliding rod 45 towards the limit block 451. The compression spring 46 is stretched and its elastic force increases under the pull of the sliding block 44. When the first inclined surface 521 separates from the second inclined surface 431, the extension ring 52 contacts the contacting surface 432. The elastic force of the compression spring 46 cannot be released, and the position of the docking block 42 remains fixed. At this time, the docking block 42 enters the docking groove 311. The docking block 42 and the docking groove 311 cooperate to lock and fix the male head 31 and the female seat 2.
[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-precision dynamic strain gauge, comprising a dynamic strain gauge (1) and a transmission cable (3), characterized in that, The dynamic strain gauge (1) has a female seat (2) on one side, a sensor is provided at one end of the transmission cable (3), and a male head (31) is provided at the other end of the transmission cable (3). The male head (31) matches the female seat (2). A positioning component (4) is provided at one end of the female seat (2), and a relaxation component (5) is provided on the surface of the female seat (2). The positioning component (4) is used to lock the male head (31) and the female seat (2) in place, and the relaxation component (5) is used to release the positioning between the male head (31) and the female seat (2).
2. The high-precision dynamic strain gauge according to claim 1, characterized in that, Two positioning components (4) are symmetrically arranged. The positioning components (4) include a through hole (41) and a sliding rod (45). The through hole (41) is opened through the female seat (2). A docking block (42) is provided in the through hole (41). A guide block (43) is fixedly connected to the side of the docking block (42) away from the center of the female seat (2). A sliding block (44) is fixedly connected to the surface of the docking block (42), and two sliding blocks (44) are provided on each docking block (42).
3. A high-precision dynamic strain gauge according to claim 2, characterized in that, The through hole (41) extends inward and is provided with a limiting step (411). Each through hole (41) is provided with two sliding rods (45). One end of the sliding rod (45) is fixedly connected to the limiting step (411), and the other end of the sliding rod (45) is fixedly connected to a limiting block (451). The sliding block (44) is sleeved on the surface of the sliding rod (45), and a compression spring (46) is sleeved on the surface of the sliding rod (45). The elastic force of the compression spring (46) drives the sliding block (44) to move away from the limiting block (451).
4. A high-precision dynamic strain gauge according to claim 3, characterized in that, The relaxation component (5) includes a sleeve (51), one end of which is fixedly connected to an extension ring (52). A guide block (53) with a T-shaped block structure is fixedly connected to the inner side of the sleeve (51). Multiple guide blocks (53) are evenly arranged. A guide groove (22) with a T-shaped groove structure is opened on the surface of the female seat (2). Multiple guide grooves (22) are arranged corresponding to the guide blocks (53). The surface of the guide block (53) is slidably connected to the groove wall of the guide groove (22). A fixing ring (55) is fixedly connected to the surface of the female seat (2). A reset spring (54) is sleeved on the surface of the female seat (2). One end of the reset spring (54) is fixedly connected to the fixing ring (55), and the other end of the reset spring (54) is fixedly connected to the extension ring (52).
5. A high-precision dynamic strain gauge according to claim 4, characterized in that, The guide block (43) has a contact plane (432) on the side opposite to the docking block (42). The guide block (43) also has a second inclined surface (431). The extension ring (52) has a first inclined surface (521). The first inclined surface (521) matches the second inclined surface (431).
6. A high-precision dynamic strain gauge according to claim 5, characterized in that, A reference block (312) is fixedly connected to the surface of the male head (31). A reference groove (21) is provided at one end of the female seat (2). The reference groove (21) matches the reference block (312). A docking groove (311) is also provided on the surface of the male head (31). Each male head (31) has two docking grooves (311) on its surface. The docking grooves (311) match the docking block (42).