Fastener and clamp for installing and fixing vibrating wire strain gauge

Abstract

The utility model belongs to the technical field of model tests, and discloses a fastener and a clamp for installing and fixing a vibrating wire strain gauge, which comprise a vibrating wire strain gauge body, the outer walls of the two sides of the vibrating wire strain gauge body abut against the inner side wall of the fastener body, and the fastener body is symmetrically installed inside an installation frame. A mounting shell is fixedly mounted at the bottom end of the mounting frame, grapnels are symmetrically hinged to the bottom end of the mounting shell through connecting shafts, the two ends of the vibrating wire strain gauge body abut against the silica gel non-slip mats, and the silica gel non-slip mats are mounted on the inner side wall of the clamp body. Through the cooperation of the buckle body, the claw hook, the clamp body and other parts, the problem that the vibrating wire strain gauge is difficult to install under the complex conditions of lacking a working surface and the like is solved, and the problems that the installation direction of the vibrating wire strain gauge has deviation and the installation is not firm are solved, so that the accuracy of the vibrating wire strain gauge body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of model testing, specifically a buckle and a clamp for installing and fixing a vibrating-wire strain gauge. Background Art

[0002] The vibrating-wire strain gauge is a strain sensor that uses a vibrating wire for measurement. Its biggest advantage is that the sensor has a simple structure, reliable operation, and the output signal is a standard frequency signal, which is very convenient for computer processing or circuit conditioning by alternative means.

[0003] In the prior art, the installation of vibrating-wire strain gauges is mainly achieved by welding them to a predetermined position in advance when the steel cage is tied, or by fixing them to a predetermined position after the steel cage is tied. However, the on-site construction conditions are complex and the working surface is limited. There are situations where the strain gauge cannot be installed directly at the designated position of the steel cage. Due to manual installation, the strain gauge is fixed in the direction of deviation and the installation is not secure.

[0004] After searching, it is found that a vibrating-wire surface strain gauge installation device is disclosed in Chinese patent literature (publication number: CN207501854U). The utility model relates to a vibrating-wire surface strain gauge installation device, which belongs to road and bridge engineering and is used in the structural safety and health monitoring industry. It includes a nut, an anti-loosening combination washer, a mounting seat, a base and a surface strain gauge; the base is positioned and installed on the surface of the structure, the surface strain gauge is installed on the mounting seat, the mounting hole on the mounting seat is inserted into the stud of the base, the anti-loosening combination washer is installed on the upper surface of the mounting seat, and the nut is screwed into the stud. The utility model solves the problem of poor long-term stability caused by slight sliding or offset between the gasket and the mounting seat during the installation of traditional surface strain gauge nuts, spring washers and washers, as well as the problem of difficulty in debugging during installation, and improves the accuracy and reliability of the surface strain gauge in measuring strain data, but the following defects still exist:

[0005] Although the above-mentioned vibrating-wire surface strain gauge installation device has a reasonable structure and solves the problems of poor long-term stability caused by slight sliding or offset between the gasket and the mounting seat during the installation of the traditional surface strain gauge nut, spring washer and washer, as well as the difficulty in debugging during installation, and improves the accuracy and reliability of the surface strain gauge in measuring strain data, it still has the problem that the installation of the vibrating-wire strain gauge is mainly achieved by welding it to a predetermined position in advance when the steel cage is tied, or fixing it to a predetermined position after the steel cage is tied. However, the on-site construction conditions are complex and the working surface is limited, so there is a situation where it cannot be installed directly at the specified position of the steel cage. Due to manual installation, the strain gauge is fixed, and there are deviations in the installation direction and unstable installation. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a buckle and a clamp for installing and fixing a vibrating-wire strain gauge, which has the advantage that the vibrating-wire strain gauge can be easily installed under complex conditions such as lack of a working surface.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clip and a clamp for fixing a vibrating-string strain gauge, comprising a vibrating-string strain gauge body, the outer walls on both sides of the vibrating-string strain gauge body are in conflict with the inner wall of the clip body, and the clip body is symmetrically installed to the inside of a mounting frame, a mounting shell is fixedly installed at the bottom end of the mounting frame, and a grab hook is symmetrically hinged at the bottom end of the mounting shell through a connecting axis, both ends of the vibrating-string strain gauge body are in conflict with the silicone anti-slip pad, and the silicone anti-slip pad is installed on the inner wall of the clamp body.

[0008] Preferably, the top of the buckle body is fixedly connected with a connecting block, the top of the connecting block is fixedly installed with a first screw sleeve, and a first rotating wheel is arranged between the first screw sleeves, connecting screws are fixedly installed on both sides of the first rotating wheel, and the connecting screws are meshed with the first screw sleeves.

[0009] Preferably, one end of the connecting screw rods on both sides are hinged to the inner side walls of the mounting frame, and a guide rod is fixedly connected between the inner side walls of the mounting frame, and a through hole matching the guide rod is penetrated through the interior of the buckle body.

[0010] Preferably, the connecting shafts on both sides are hinged to the outer side walls of the plug-in block through linkage rods, a cushion block is fixedly installed at the bottom end of the plug-in block, and guide sliders are installed on the front and rear outer walls of the plug-in block, and the guide sliders are movably connected to the inside of the guide slot.

[0011] Preferably, a plurality of first interference blocks are symmetrically installed on the front and rear outer walls of the plug-in block, and the outer walls of the first interference blocks are in conflict with the outer walls of the second interference blocks, the second interference blocks are installed at equal intervals on the outer wall of the flexible sheet, and the flexible sheet is symmetrically installed inside the mounting shell.

[0012] Preferably, a movable sleeve is installed at the top end of the clamp body, and the movable sleeve is movably connected to the bottom end of the connecting frame, and an extension rod is fixedly installed at the top end of the connecting frame.

[0013] Preferably, a connecting block is installed at the top of the movable sleeve, and a second screw sleeve is installed through the inside of the connecting block, the inner side walls of the second screw sleeve are meshed and connected with a connecting screw, and one end of the connecting screw is hinged to the inner side wall of the connecting frame, the other end of the connecting screw is connected to one end of the limit block, and the other end of the limit block is connected to the second rotating wheel through a connecting rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. During use, the utility model solves the problem of difficult installation of vibrating-wire strain gauges under complex conditions such as lack of working surface through the cooperation between the buckle body, the grab hook and the clamp body, and solves the problem of deviation in installation direction and unreliable installation of the vibrating-wire strain gauge, thereby improving the accuracy of the vibrating-wire strain gauge body.

[0016] 2. The utility model is provided with a clip body, so that during use, it is only necessary to rotate the first rotating wheel forward or reversely, so that the connecting screw connected to the first rotating wheel is rotated, and the first screw sleeve engaged with the connecting screw is rotated to drive the clip body and the connecting block to move relative or oppositely, so that the vibrating-wire strain gauge body can be clamped and positioned quickly.

[0017] 3. The utility model is provided with a linkage rod, so that when the plug-in block moves upward or downward during use, the hinged linkage rod drives the connecting shaft and the grab hook to expand outward or move inward, so that steel bars of different sizes can be quickly clamped and fixed, thus improving the practicality and convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the combined parts of the vibrating wire strain gauge body, the buckle body, the mounting frame and the mounting housing in the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the installation shell in the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the combined parts of the sliding plug-in block, the cushion block, the guide slider and the first abutment block in the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the combined parts of the clamp body, the connecting frame and the extension rod in the utility model;

[0023] Figure 6 For this utility model Figure 1 The A part in the figure is an enlarged schematic diagram of the parts structure.

[0024] In the figure: 1. vibrating-wire strain gauge body; 2. buckle body; 3. connecting block; 4. first screw sleeve; 5. first rotating wheel; 6. connecting screw; 7. mounting frame; 8. guide rod; 9. mounting shell; 10. grab hook; 11. linkage rod; 12. plug-in block; 13. cushion block; 14. guide slider; 15. guide slide groove; 16. first resistance block; 17. second resistance block; 18. flexible sheet; 19. silicone anti-skid pad; 20. clamp body; 21. movable sleeve; 22. connecting frame; 23. extension rod; 24. connecting block; 25. second screw sleeve; 26. connecting screw; 27. limit block; 28. connecting rod; 29. ​​second rotating wheel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 6 As shown, the utility model provides a clip and clamp for installing and fixing a vibrating-string strain gauge, including a vibrating-string strain gauge body 1, the outer walls on both sides of the vibrating-string strain gauge body 1 are in conflict with the inner walls of the corresponding clip body 2, and the clip body 2 is symmetrically installed in the interior of the installation frame 7, the bottom end of the installation frame 7 is fixedly connected with a mounting shell 9, the bottom end of the mounting shell 9 is a hollow structure, and the bottom end of the mounting shell 9 is symmetrically hinged with a grab hook 10 through a connecting axis, both ends of the vibrating-string strain gauge body 1 are in conflict with a silicone anti-skid pad 19 installed on the inner wall of the clamp body 20, and the inner wall of the silicone anti-skid pad 19 is tightly fitted with the inner wall of the clamp body 20, through the provided clip body 2, the vibrating-string strain gauge body 1 can be limited by the movement of the clip body 2 during use, and through the provided grab hook 10, steel bars of different sizes can be connected, and at the same time, through the movement of the provided clamp body 20, the clamp body 20 can be quickly connected to the vibrating-string strain gauge body 1.

[0027] Specifically, the top of the fastener body 2 is fixedly connected with a connecting block 3, the top of the connecting block 3 is fixedly installed with a first screw sleeve 4, and a first rotating wheel 5 is arranged in the middle between the two first screw sleeves 4, and the outer walls on both sides of the first rotating wheel 5 are fixedly connected with a connecting screw 6 meshing with the first screw sleeve 4. Through the setting of the first rotating wheel 5, the threaded teeth arranged on the outer walls of the connecting screws 6 on both sides are arranged in opposite structures, so that during use, by rotating the first rotating wheel 5, the connecting screw 6 connected to the first rotating wheel 5 is rotated, and the fastener body 2 and the connecting block 3 are driven to perform relative or opposite movements through the rotation of the connecting screw 6 and the meshing first screw sleeve 4.

[0028] Furthermore, one end of the connecting screw rods 6 on both sides are hinged to the inner wall of the mounting frame 7, and a guide rod 8 is fixedly connected between the inner walls of the mounting frame 7. The interior of the fastener body 2 is penetrated by through holes adapted to the guide rod 8, and the interior of the through holes is movably connected with the guide rod 8. The guide rod 8 is set, so that the fastener body 2 plays a guiding role during relative or opposite movements.

[0029] Furthermore, the connecting shafts on both sides are hinged with the outer side walls of the plug-in block 12 through the linkage rod 11, and the plug-in block 12 is movably connected to the bottom end of the installation shell 9. A cushion block 13 is fixedly installed at the bottom end of the plug-in block 12, and a groove is provided at the bottom end of the cushion block 13. The groove is an arc-shaped structure, and the front and rear outer walls of the plug-in block 12 are fixedly connected with guide sliders 14. The guide sliders 14 are movably connected to the inside of the guide slide grooves 15 provided on the front and rear inner sides of the installation shell 9. Through the provided linkage rod 11, during use, when the plug-in block 12 moves upward or downward, the hinged linkage rod 11 drives the connecting shaft and the grab hook 10 to expand outward or move inward.

[0030] It is worth mentioning that the front and rear outer walls of the plug-in block 12 are symmetrically fixedly connected with a plurality of first contact blocks 16, and the plurality of first contact blocks 16 are evenly spaced on both sides of the front and rear outer walls, and the outer side walls of the first contact blocks 16 conflict with the outer side walls of the second contact blocks 17, and the second contact blocks 17 are evenly spaced and fixedly connected to the outer side walls of the flexible sheet 18, and the flexible sheet 18 is symmetrically fixedly connected to the inside of the mounting shell 9, and the first contact blocks 16 and the second contact blocks 17 are both semi-cylindrical structures, and by setting the first contact blocks 16 and the second contact blocks 17, after the activity of the plug-in block 12 is limited during use, the first contact blocks 16 and the second contact blocks 17 conflict with each other, thereby quickly limiting the plug-in block 12.

[0031] It is worth noting that the top of the clamp body 20 is fixedly connected with a movable sleeve 21, and the movable sleeve 21 is movably connected to the bottom end of the connecting frame 22. The top of the connecting frame 22 is fixedly connected with an extension rod 23. The clamp body 20 is movably connected with the connecting frame 22 through the movable sleeve 21. The movable sleeve 21 is set, so that during use, the movable sleeve 21 guides the movement of the clamp body 20.

[0032] It is worth mentioning that two connecting blocks 24 fixedly connected to the top of the movable sleeve 21 are symmetrically arranged inside the connecting frame 22, and a second screw sleeve 25 is fixedly connected to the inside of the connecting block 24, and the inner side wall of the second screw sleeve 25 is meshed with a connecting screw 26 hinged to the inner side wall of the connecting frame 22, and the other end of the connecting screw 26 is fixedly connected to one end of the limit block 27, and the other end of the limit block 27 is fixedly connected to the second rotating wheel 29 through a connecting rod 28, and the second rotating wheel 29 is arranged In the middle part of the connecting frame 22, two groups of connecting screws 26 and second screw sleeves 25 are provided, and the threaded tooth structures of the outer side walls of the connecting screws 26 on both sides are oppositely arranged. Through the second rotating wheel 29, the second rotating wheel 29 can be rotated forward or reversely during use, thereby driving the connecting screws 26 to rotate. Further, due to the engagement of the connecting screws 26 and the second screw sleeves 25, the connecting blocks 24 fixedly installed inside drive the clamp bodies 20 and the movable sleeves 21 on both sides to move relative to or oppositely.

[0033] Principle and process of this utility model:

[0034] First, place the vibrating-wire strain gauge body 1 in the middle of the mounting frame 7, and then use the first rotating wheel 5 to rotate the first rotating wheel 5 during use, and drive the fastener body 2 and the connecting block 3 to move relative or oppositely through the rotation of the connecting screw 6, so that the outer wall of the vibrating-wire strain gauge body 1 is clamped and fixed. At the same time, during the movement of the fastener body 2, the guide rod 8 is used to guide, and then the cushion block 13 is used to contact the outer wall of the steel bar, so that the cushion block 13 cooperates with the guide slider 14 to move toward the guide slot 15 set inside the mounting shell 9, so that through the linkage rod 11 set, during use, when the plug-in block 12 moves upward or downward, the linkage rod 11 hingedly connected drives the connecting shaft and the grab hook 10 to expand outward or move inward, clamping and fixing steel bars of different sizes, and then by setting The first and second contact blocks 16 and 17 are arranged so that after the movable limit of the plug-in block 12 during use, the flexible sheet 18 is reset and the first and second contact blocks 16 and 17 are in conflict with each other, so that the plug-in block 12 is quickly limited. Finally, by rotating the second rotating wheel 29 arranged inside the connecting frame 22, the second rotating wheel 29 arranged inside the connecting frame 22 can be rotated forward or reversely during use, thereby cooperating with the connecting rod 28 and the limiting block 27 to drive the connecting screw 26 to rotate, and further because the connecting screw 26 and the second screw sleeve 25 are meshed, the connecting block 24 fixedly installed inside drives the clamp bodies 20 and the movable sleeve 21 on both sides to move relative to or oppositely, so that the second screw sleeve 25 conflicts with the limiting block 27. After the conflict, the clamp body 20 and the silicone anti-skid pad 19 are connected to the front and rear ends of the vibrating string strain gauge body 1. In this way, a buckle and clamp for installing and fixing a vibrating string strain gauge is completed.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamp and fixture for mounting and fixing a vibrating-wire strain gauge, comprising a vibrating-wire strain gauge body (1), Features: The outer walls on both sides of the vibrating-wire strain gauge body (1) are in conflict with the inner walls of the clip body (2), and the clip body (2) is symmetrically installed inside the mounting frame (7). The bottom end of the mounting frame (7) is fixedly installed with a mounting shell (9), and the bottom end of the mounting shell (9) is symmetrically hinged with a grab hook (10) through a connecting axis. Both ends of the vibrating-wire strain gauge body (1) are in conflict with the silicone anti-skid pad (19), and the silicone anti-skid pad (19) is installed on the inner wall of the clamp body (20).

2. A clamp and fixture for mounting and fixing a vibrating wire strain gauge according to claim 1, Features: The top end of the buckle body (2) is fixedly connected to a connecting block (3), the top end of the connecting block (3) is fixedly mounted with a first screw sleeve (4), and a first rotating wheel (5) is arranged between the first screw sleeves (4), and connecting screws (6) are fixedly mounted on both sides of the first rotating wheel (5), and the connecting screws (6) are meshed with the first screw sleeves (4).

3. A clamp and fixture for mounting and fixing a vibrating wire strain gauge according to claim 2, Features: One end of the connecting screw rods (6) on both sides is hinged to the inner wall of the mounting frame (7), and a guide rod (8) is fixedly connected between the inner walls of the mounting frame (7), and a through hole matching the guide rod (8) is provided through the interior of the buckle body (2).

4. A clamp and fixture for mounting and fixing a vibrating wire strain gauge according to claim 1, Features: The connecting shafts on both sides are hinged to the outer side walls of the plug-in block (12) through linkage rods (11), a cushion block (13) is fixedly installed at the bottom end of the plug-in block (12), and guide slide blocks (14) are installed on the front and rear outer walls of the plug-in block (12), and the guide slide blocks (14) are movably connected to the inside of the guide slide groove (15).

5. A clamp and fixture for mounting and fixing a vibrating wire strain gauge according to claim 4, Features: A plurality of first abutment blocks (16) are symmetrically mounted on the front and rear outer walls of the plug-in block (12), and the outer walls of the first abutment blocks (16) abut against the outer walls of the second abutment blocks (17). The second abutment blocks (17) are mounted at equal intervals on the outer walls of the flexible sheet (18), and the flexible sheet (18) is symmetrically mounted inside the mounting housing (9).

6. A clamp and fixture for mounting and fixing a vibrating wire strain gauge according to claim 1, Features: The top end of the clamp body (20) is equipped with a movable sleeve (21), and the movable sleeve (21) is movably connected to the bottom end of the connecting frame (22). The top end of the connecting frame (22) is fixedly equipped with an extension rod (23).

7. A clamp and fixture for mounting and fixing a vibrating wire strain gauge according to claim 6, Features: The top end of the movable sleeve (21) is installed with a connecting block (24), and the interior of the connecting block (24) is penetrated by a second screw sleeve (25), the inner side wall of the second screw sleeve (25) is meshingly connected with a connecting screw (26), and one end of the connecting screw (26) is hinged to the inner side wall of the connecting frame (22), the other end of the connecting screw (26) is connected to one end of a limit block (27), and the other end of the limit block (27) is connected to the second rotating wheel (29) through a connecting rod (28).

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