Fiber bragg grating strain gauge mounting and fixing device for track

Abstract

The utility model relates to the technical field of track strain gauge installation, and discloses a track fiber grating strain gauge installation fixing device comprising a pedestal, the top end of the pedestal is provided with a buffer groove, the inner side end of the buffer groove is symmetrically provided with slide bars, the outer walls of the slide bars are symmetrically sleeved with first springs, and the outer walls of the slide bars are sleeved with slide blocks. The top end of the sliding block is fixedly provided with a mounting plate, the top end of the mounting plate is symmetrically provided with sliding grooves, the side ends of the sliding grooves are rotatably provided with bidirectional lead screws, the outer walls of the bidirectional lead screws are sleeved with moving blocks in a threaded mode, the side ends of the moving blocks are fixedly provided with supporting columns, and the side ends of the supporting columns are fixedly provided with clamping blocks. A limiting assembly is fixedly installed at the side end of the two-way lead screw. According to the fiber bragg grating strain gauge mounting and fixing device for the track, through arrangement of the clamping blocks and the pressing blocks, the strain gauge can be effectively fixed and limited, through arrangement of the limiting assemblies, the clamping blocks can be conveniently adjusted, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of track strain gauge installation technology, specifically a track fiber optic strain gauge installation and fixing device. Background Technology

[0002] Fiber Bragg grating strain gauges for rail transit are sensors based on fiber optic technology and are widely used in rail transportation and other fields to monitor the strain and displacement of structures in real time. A fiber grating is an optical element formed inside an optical fiber through periodic changes in refractive index, which has excellent wavelength selectivity and high sensitivity.

[0003] Existing fixing devices for fiber Bragg grating strain gauges typically require the use of a screwdriver to secure the strain gauges, which is cumbersome and cannot quickly and accurately fix the strain gauges. Furthermore, the existing fixing devices have poor fixing effect on the strain gauges, which reduces the applicability of the device. Therefore, it is necessary to improve the existing devices to meet actual needs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a track fiber optic strain gauge mounting and fixing device, which has the advantages of facilitating quick fixing of strain gauges and being easy to operate, thus solving the aforementioned technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mounting and fixing device for a fiber optic strain gauge for track use, comprising a base, a buffer groove at the top of the base, slide rods symmetrically mounted on the inner side of the buffer groove, springs symmetrically sleeved on the outer wall of the slide rods, a slider sleeved on the outer wall of the slide rods, a mounting plate fixedly mounted at the top of the slider, a sliding groove symmetrically opened at the top of the mounting plate, a bidirectional lead screw rotatably mounted on the side of the sliding groove, a moving block threaded on the outer wall of the bidirectional lead screw, a support column fixedly mounted on the side of the moving block, a clamping block fixedly mounted on the side of the support column, a spring groove at the top of the clamping block, telescopic rods arrayed at the bottom of the inner spring groove, springs symmetrically sleeved on the outer wall of the telescopic rods, a pressing block fixedly mounted at the top of the telescopic rods, and a limit component fixedly mounted on the side of the bidirectional lead screw.

[0008] Preferably, limit rods are symmetrically installed on the side ends of the slide.

[0009] With the above technical solution, the limiting rod passes through the side end of the moving block. By setting the limiting rod, it is convenient to limit the movement of the moving block.

[0010] Preferably, rubber pads are installed on both the side end of the clamping block and the bottom end of the pressing block.

[0011] By using the above technical solution and by setting rubber pads, the clamping wear of the clamping block and the pressing block on the outer wall of the strain gauge can be reduced.

[0012] Preferably, a pull ring is fixedly installed at the top of the clamping block.

[0013] The above technical solution, by setting a pull ring, makes it easy to pull the clamping block upward, thus improving the applicability of the device.

[0014] Preferably, the limiting assembly includes a throttle, a gear, a fixing block, a pull rod, a limiting block, a toothed block, and three springs. The throttle is fixedly installed on the side end of the bidirectional lead screw, the gear is fixedly installed on the outer wall of the bidirectional lead screw, the fixing block is fixedly installed on the side end of the mounting plate, and the pull rod is movably installed on the side end. The limiting block is fixedly installed on the side end of the pull rod, and the toothed blocks are arrayed on the side end. The three springs are symmetrically installed on the side end of the fixing block.

[0015] With the above technical solution, by pulling the lever outward, the lever causes the limiting block to move outward. At this time, the toothed block moves away from the outer wall of the gear. Then, by rotating the throttle, the throttle causes the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw can drive the two sets of moving blocks to move relative to each other. When the two sets of moving blocks move to the appropriate position, the lever is released. Under the push of the spring, the limiting block causes the toothed block to move towards the outer wall of the gear until the toothed block and the gear are engaged, thereby limiting the rotation of the bidirectional lead screw.

[0016] Compared with the prior art, this utility model provides a mounting and fixing device for a fiber optic strain gauge for track use, which has the following advantages:

[0017] 1. This utility model involves placing the strain gauge on the top of the mounting plate, pulling the pull rod outward, and the pull rod causing the limiting block to move outward. At this time, the toothed block moves away from the outer wall of the gear. Then, by rotating the throttle, the throttle causes the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw can drive the two sets of moving blocks to move relative to each other. When the two sets of moving blocks have moved to the appropriate position, the pull rod is released. Under the push of the spring, the limiting block causes the toothed block to move towards the outer wall of the gear until the toothed block and the gear are engaged, thereby limiting the rotation of the bidirectional lead screw.

[0018] 2. This utility model involves pulling the pull ring upwards, which causes the clamping block to move upwards. When the two sets of clamping blocks move to the two ends of the strain gauge, the pull ring is released, and the clamping block moves downwards under the action of the telescopic rod and the second spring. At this time, the two sets of clamping blocks clamp and fix the two ends of the strain gauge, while the clamping block presses and fixes the top of the strain gauge, thereby improving the fixing effect of the strain gauge. In addition, by setting a buffer groove, the influence of external environmental vibration on the strain gauge can be reduced, thus improving the performance of the strain gauge. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation and fixing device for the structural strain gauge of this utility model;

[0020] Figure 2 This is a top view schematic diagram of the installation and fixing device for the structural strain gauge of this utility model;

[0021] Figure 3 This is a front sectional view of the installation and fixing device for the structural strain gauge of this utility model;

[0022] Figure 4 This is a side sectional view of the installation and fixing device for the structural strain gauge of this utility model.

[0023] Figure 5 The structure of this utility model Figure 1 A magnified view of part A in the diagram;

[0024] Figure 6 The structure of this utility model Figure 4 A magnified view of part B in the diagram.

[0025] The components are as follows: 1. Base; 2. Buffer groove; 3. Slide rod; 4. Spring 1; 5. Slider; 6. Mounting plate; 7. Slide groove; 8. Two-way lead screw; 9. Moving block; 10. Support column; 11. Clamping block; 12. Spring groove; 13. Telescopic rod; 14. Spring 2; 15. Pressing block; 16. Turning handle; 17. Gear; 18. Fixing block; 19. Pull rod; 20. Limiting block; 21. Gear block; 22. Spring 3. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6A mounting and fixing device for a track fiber optic strain gauge includes a base 1. A buffer groove 2 is formed at the top of the base 1. Slide rods 3 are symmetrically mounted on the inner side of the buffer groove 2. Springs 4 are symmetrically fitted on the outer wall of the slide rods 3. A slider 5 is fitted on the outer wall of the slide rods 3. A mounting plate 6 is fixedly mounted at the top of the slider 5. A sliding groove 7 is symmetrically formed at the top of the mounting plate 6. A bidirectional lead screw 8 is rotatably mounted on the side of the sliding groove 7. A moving block 9 is threaded onto the outer wall of the bidirectional lead screw 8. A support column 10 is fixedly mounted on the side of the moving block 9. A clamping block 11 is fixedly mounted on the side of the support column 10. A spring groove 12 is formed at the top of the clamping block 11. Telescopic rods 13 are arrayed at the bottom of the spring groove 12. Springs 14 are fitted on the outer wall of the telescopic rods 13. A pressing block 15 is fixedly mounted at the top of the telescopic rods 13. A limit assembly is fixedly mounted on the side of the bidirectional lead screw 8.

[0028] Specifically, limit rods are symmetrically installed on the side of the slide 7. The advantage is that the limit rods pass through the side of the moving block 9, and by setting the limit rods, it is easy to limit the movement of the moving block 9.

[0029] Specifically, rubber pads are installed on the side end of the clamping block 11 and the bottom end of the pressing block 15. The advantage is that by setting the rubber pads, the clamping wear of the clamping block 11 and the pressing block 15 on the outer wall of the strain gauge can be reduced.

[0030] Specifically, a pull ring is fixedly installed at the top of the clamping block 15. The advantage is that by setting the pull ring, it is easy to pull the clamping block 15 upward, thus improving the applicability of the device.

[0031] Specifically, the limiting assembly includes a throttle 16, a gear 17, a fixing block 18, a pull rod 19, a limiting block 20, toothed blocks 21, and springs 22. The throttle 16 is fixedly installed on the side end of the double-acting lead screw 8, the gear 17 is fixedly installed on the outer wall of the double-acting lead screw 8, the fixing block 18 is fixedly installed on the side end of the mounting plate 6, and the pull rod 19 is movably installed on the side end. The limiting block 20 is fixedly installed on the side end of the pull rod 19, and toothed blocks 21 are arrayed on the side end. Springs 22 are symmetrically installed on the side end of the fixing block 18. The advantage is that by pulling outwards... Pull rod 19 drives limit block 20 to move outward. At this time, tooth block 21 moves away from the outer wall of gear 17. Then, by rotating handle 16, handle 16 drives double-acting screw 8 to rotate. The rotation of double-acting screw 8 can drive two sets of moving blocks 9 to move relative to each other. When the two sets of moving blocks 9 move to the appropriate position, pull rod 19 is released. Under the push of spring 22, limit block 20 drives tooth block 21 to move towards the outer wall of gear 17 until tooth block 21 and gear 17 are engaged, thereby limiting the rotation of double-acting screw 8.

[0032] In use, by placing the strain gauge on the top of the mounting plate 6 and pulling the pull rod 19 outward, the pull rod 19 moves the limiting block 20 outward. At this time, the toothed block 21 moves away from the outer wall of the gear 17. Then, by rotating the handle 16, the handle 16 drives the double-acting screw 8 to rotate. The rotation of the double-acting screw 8 drives the two sets of moving blocks 9 to move relative to each other. When the two sets of moving blocks 9 have moved to the appropriate position, the pull rod 19 is released. Under the push of the spring 22, the limiting block 20 drives the toothed block 21 to move towards the outer wall of the gear 17 until the toothed block 21 and the gear 17 are engaged, thereby locking the double-acting screw 21 into place. The rotation of the lead screw 8 is limited. By pulling the pull ring upward, the pull ring drives the clamping block 15 to move upward. When the two sets of clamping blocks 11 move to the two ends of the strain gauge, the pull ring is released. The clamping block 15 moves downward under the action of the telescopic rod 13 and the second spring 14. At this time, the two sets of clamping blocks 11 clamp and fix the two ends of the strain gauge, while the clamping block 15 presses and fixes the top of the strain gauge, thereby improving the fixing effect of the strain gauge. In addition, by setting the buffer groove, the influence of external environmental vibration on the strain gauge can be reduced, thus improving the performance of the strain gauge.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mounting and fixing device for a fiber optic strain gauge for track use, comprising a base (1), characterized in that: The base (1) has a buffer groove (2) at its top. A slide rod (3) is symmetrically installed on the inner side of the buffer groove (2). A spring (4) is symmetrically sleeved on the outer wall of the slide rod (3). A slider (5) is sleeved on the outer wall of the slide rod (3). An mounting plate (6) is fixedly installed at the top of the slider (5). A sliding groove (7) is symmetrically opened at the top of the mounting plate (6). A bidirectional lead screw (8) is rotatably installed on the side of the sliding groove (7). A moving block is threaded onto the outer wall of the bidirectional lead screw (8). 9) A support column (10) is fixedly installed on the side end of the moving block (9), and a clamping block (11) is fixedly installed on the side end of the support column (10). A spring groove (12) is opened at the top of the clamping block (11). A telescopic rod (13) is arrayed at the bottom of the inside of the spring groove (12). A spring (14) is sleeved on the outer wall of the telescopic rod (13). A pressing block (15) is fixedly installed at the top of the telescopic rod (13). A limit component is fixedly installed on the side end of the bidirectional screw (8).

2. The mounting and fixing device for a track fiber optic strain gauge according to claim 1, characterized in that: Limiting rods are symmetrically installed on the side ends of the slide (7).

3. The mounting and fixing device for a track fiber optic strain gauge according to claim 1, characterized in that: Rubber pads are installed on the side end of the clamping block (11) and the bottom end of the pressing block (15).

4. The mounting and fixing device for a fiber optic strain gauge for track as described in claim 1, characterized in that: A pull ring is fixedly installed at the top of the clamping block (15).

5. The mounting and fixing device for a fiber optic strain gauge for track as described in claim 1, characterized in that: The limiting assembly includes a throttle (16), a gear (17), a fixing block (18), a pull rod (19), a limiting block (20), a toothed block (21), and a spring (22). The throttle (16) is fixedly installed on the side end of the double-acting screw (8). The gear (17) is fixedly installed on the outer wall of the double-acting screw (8). The fixing block (18) is fixedly installed on the side end of the mounting plate (6), and the pull rod (19) is movably installed on the side end. The limiting block (20) is fixedly installed on the side end of the pull rod (19), and the toothed block (21) is arrayed on the side end. The spring (22) is symmetrically installed on the side end of the fixing block (18).

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