Strain gauge pasting device

Abstract

The utility model belongs to the technical field of steel bar strain monitoring, and particularly relates to a strain gauge pasting device which comprises a clamping structure, the clamping end of the clamping structure is fixedly connected with an annular clamping plate structure used for clamping a steel bar, and the end, away from the clamping structure, of the annular clamping plate structure is fixedly connected with a hydraulic plate structure capable of being arranged. The dischargeable hydraulic plate structure is used for pressing the strain gauge and discharging redundant glue liquid; a strain gauge pasting structure is arranged on the inner side of the annular clamping plate structure and used for correspondingly pasting the strain gauges clamped on the strain gauge pasting structure to the steel bars. According to the utility model, the strain gauge is clamped and fixed through the strain gauge pasting structure, the strain gauge is pasted on the reinforcing steel bar through the cooperation of the clamping structure and the annular clamping plate structure, and the redundant glue solution is discharged through the hydraulic plate structure capable of being discharged, so that the technical problems in the prior art are solved; and the accuracy, convenience and reliability of steel bar strain monitoring are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel bar strain monitoring, and particularly relates to a strain gauge pasting device. Background Art

[0002] During the construction process, the strain monitoring of the bottom steel bars is crucial, which can reflect the stress condition and safety status of the structure. However, there are many problems with traditional strain gauge installation devices. For example, when using glue to fix the strain gauge, manual pressing is required. If the pressing force is not completely perpendicular to the surface during the pressing process, the position of the strain gauge will slide with the liquid adhesive. If a large deviation is found between the resistance strain gauge and the marked position after the bonding is firm, it needs to be pasted again, which will take a long operation time and seriously affect the accuracy, convenience and reliability of strain monitoring. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a strain gauge pasting device to solve the above problems.

[0004] To achieve the above purpose, the utility model provides the following scheme:

[0005] A strain gauge pasting device includes:

[0006] A clamping structure, the clamping end of the clamping structure is fixedly connected with an annular clamping plate structure, the annular clamping plate structure is used for clamping the steel bar, and one end of the annular clamping plate structure far from the clamping structure is fixedly connected with a hydraulic discharge plate structure, and the hydraulic discharge plate structure is used for pressing the strain gauge and discharging the excess glue;

[0007] The inner side of the annular clamping plate structure is provided with a strain gauge pasting structure, and the strain gauge pasting structure is used for correspondingly pasting the strain gauge clamped on the strain gauge pasting structure on the steel bar;

[0008] A strain gauge slot for placing the strain gauge is opened in the middle of the inner wall of the strain gauge pasting structure, and the strain gauge slot is used to prevent the strain gauge from deviating around.

[0009] Preferably, the clamping structure includes a lower clamping plate and an upper clamping plate;

[0010] Two lower rotating plates are symmetrically and fixedly connected to the middle of the top side of the lower clamping plate, and the two lower rotating plates are perpendicular to the lower clamping plate;

[0011] Two upper rotating plates are symmetrically and fixedly connected to the middle of the top side of the upper clamping plate, and the two upper rotating plates are perpendicular to the upper clamping plate;

[0012] The upper rotating plate and the lower rotating plate are rotationally connected through a rotating shaft. A torsion spring is sleeved outside the rotating shaft. One end of the torsion spring is fixedly connected to the lower clamping plate, and the other end of the torsion spring is fixedly connected to the upper clamping plate.

[0013] Preferably, the annular clamping plate structure includes a semi-circular lower clamping plate fixedly connected to the lower clamping plate and a semi-circular upper clamping plate fixedly connected to the upper clamping plate. The semi-circular lower clamping plate and the semi-circular upper clamping plate enclose an annular cavity for clamping the steel bar.

[0014] Preferably, a card slot is left between the two ends of the semi-circular lower clamping plate and the semi-circular upper clamping plate;

[0015] A plurality of ball holes are formed in both the semi-circular lower clamping plate and the semi-circular upper clamping plate. The plurality of ball holes are evenly and equally spaced along the axis direction of the annular cavity. The ball holes and the card slot are used to tightly clamp the strain gauge pasting structure in the annular cavity.

[0016] Preferably, the drainable hydraulic plate structure includes a lower pressing plate fixedly connected to the semi-circular lower clamping plate and an upper pressing plate fixedly connected to the semi-circular upper clamping plate. The lower pressing plate and the upper pressing plate are located at one end of the semi-circular lower clamping plate and the semi-circular upper clamping plate away from the torsion spring.

[0017] Preferably, one side of the bottom surface of the lower pressing plate is recessed downward, and the other side of the top surface of the upper pressing plate is protruded upward to form a drain hole. The drain hole located on the lower pressing plate and the drain hole located on the upper pressing plate are symmetrically arranged at the center.

[0018] Preferably, the strain gauge pasting structure includes a semi-circular lower pasting plate and a semi-circular upper pasting plate;

[0019] A plurality of clamping balls are fixedly connected to the outer walls of the semi-circular lower pasting plate and the semi-circular upper pasting plate. The plurality of clamping balls are evenly and equally spaced along the axis direction of the annular cavity. The plurality of clamping balls are correspondingly clamped in the ball holes;

[0020] The strain gauge card slot 403 is formed in the middle of the inner wall of the semi-circular upper pasting plate 402.

[0021] Preferably, limiting strips are fixedly connected to the two ends of the semi-circular lower pasting plate and the semi-circular upper pasting plate. The limiting strips are clamped in the card slot.

[0022] Preferably, the inner walls of the semi-circular lower pasting plate, the semi-circular upper pasting plate, the strain gauge card slot, the lower pressing plate, and the upper pressing plate are all coated with polytetrafluoroethylene material to prevent the adhesive from sticking to the device.

[0023] Compared with the prior art, the present utility model has the following advantages and technical effects:

[0024] The utility model clamps and fixes a strain gauge through a strain gauge pasting structure, bonds the strain gauge on a steel bar through the cooperation of a clamping structure and an annular clamping plate structure, and discharges redundant glue through a drainable hydraulic plate structure, solves the technical problems existing in the prior art, and improves the accuracy, convenience and reliability of steel bar strain monitoring. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0026] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0027] Figure 2 is Figure 1 an enlarged view of A in

[0028] Figure 3 is a schematic diagram of the partial structure of the present utility model;

[0029] Figure 4 is Figure 3 an enlarged view of B in

[0030] Figure 5 is a schematic diagram of the structure of the semi-circular upper bonding plate;

[0031] Figure 6 is a schematic diagram of the structure of the grinding structure;

[0032] Figure 7 is a schematic diagram of the structure of the cleaning structure;

[0033] Among them, 1. Clamping structure; 2. Annular clamping plate structure; 3. Drainable hydraulic plate structure; 4. Strain gauge pasting structure; 5. Grinding structure; 6. Cleaning structure; 101. Lower clamping plate; 102. Upper clamping plate; 103. Upper rotating plate; 104. Lower rotating plate; 105. Rotating shaft; 106. Torsion spring; 201. Semi-circular lower clamping plate; 202. Semi-circular upper clamping plate; 203. Card slot; 204. Ball hole; 301. Lower pressing plate; 302. Upper pressing plate; 303. Drainage hole; 401. Semi-circular lower bonding plate; 402. Semi-circular upper bonding plate; 403. Strain gauge card slot; 404. Card ball; 405. Limit strip; 501. Semi-circular grinding plate; 502. First card strip; 503. First limit ball; 601. Semi-circular cleaning plate; 602. Second card strip; 603. Second limit ball. Detailed Embodiment

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Refer to Figures 1 to 7 , the present utility model discloses a strain gauge pasting device, including:

[0037] A clamping structure 1, the clamping end of the clamping structure 1 is fixedly connected with an annular clamping plate structure 2, the annular clamping plate structure 2 is used to clamp the steel bar, and the end of the annular clamping plate structure 2 far from the clamping structure 1 is fixedly connected with a hydraulic plate structure 3 that can discharge liquid, and the hydraulic plate structure 3 that can discharge liquid is used to press the strain gauge and discharge the excess glue;

[0038] Inside the annular clamping plate structure 2, there is a strain gauge pasting structure 4, and the strain gauge pasting structure 4 is used to paste the strain gauge clamped on the strain gauge pasting structure 4 onto the steel bar correspondingly;

[0039] In the middle of the inner wall of the strain gauge pasting structure 4, there is a strain gauge clamping groove 403 for placing the strain gauge, and the strain gauge clamping groove 403 is used to prevent the strain gauge from deviating around.

[0040] The present utility model clamps and fixes the strain gauge through the strain gauge pasting structure 4, bonds the strain gauge to the steel bar through the cooperation of the clamping structure 1 and the annular clamping plate structure 2, and discharges the excess glue through the hydraulic plate structure 3 that can discharge liquid, improving the accuracy, convenience, and reliability of steel bar strain monitoring.

[0041] For a further optimized solution, the clamping structure 1 includes a lower clamping plate 101 and an upper clamping plate 102;

[0042] On the middle part of the side of the top surface of the lower clamping plate 101, two lower rotating plates 104 are symmetrically and fixedly connected, and the two lower rotating plates 104 are perpendicular to the lower clamping plate 101;

[0043] On the middle part of the side of the top surface of the upper clamping plate 102, two upper rotating plates 103 are symmetrically and fixedly connected, and the two upper rotating plates 103 are perpendicular to the upper clamping plate 102;

[0044] The upper rotating plate 103 and the lower rotating plate 104 are rotatably connected through a rotating shaft 105. A torsion spring 106 is sleeved outside the rotating shaft 105. One end of the torsion spring 106 is fixedly connected to the lower clamping plate 101, and the other end of the torsion spring 106 is fixedly connected to the upper clamping plate 102.

[0045] The torsion spring 106 can make the lower clamping plate 101 and the upper clamping plate 102 automatically reset.

[0046] In a further optimized solution, the annular clamping plate structure 2 includes a semi-circular lower clamping plate 201 fixedly connected to the lower clamping plate 101 and a semi-circular upper clamping plate 202 fixedly connected to the upper clamping plate 102. The semi-circular lower clamping plate 201 and the semi-circular upper clamping plate 202 enclose an annular cavity for clamping the steel bar.

[0047] In a further optimized solution, a card slot 203 is left between the two ends of the semi-circular lower clamping plate 201 and the semi-circular upper clamping plate 202;

[0048] A plurality of ball holes 204 are formed in both the semi-circular lower clamping plate 201 and the semi-circular upper clamping plate 202. The plurality of ball holes 204 are evenly distributed at equal intervals along the axial direction of the annular cavity. The ball holes 204 and the card slot 203 are used to tightly clamp the strain gauge pasting structure 4 in the annular cavity.

[0049] In a further optimized solution, the drainable hydraulic plate structure 3 includes a lower pressing plate 301 fixedly connected to the semi-circular lower clamping plate 201 and an upper pressing plate 302 fixedly connected to the semi-circular upper clamping plate 202. The lower pressing plate 301 and the upper pressing plate 302 are located at one end of the semi-circular lower clamping plate 201 and the semi-circular upper clamping plate 202 away from the torsion spring 106.

[0050] In a further optimized solution, the bottom surface of the lower pressing plate 301 is recessed downward on one side, and the top surface of the upper pressing plate 302 is convex upward on the other side to form a drain hole 303. The drain hole 303 located on the lower pressing plate 301 and the drain hole 303 located on the upper pressing plate 302 are symmetrically arranged at the center. The drain hole 303 can drain the excess glue.

[0051] In a further optimized solution, the strain gauge pasting structure 4 includes a semi-circular lower pasting plate 401 and a semi-circular upper pasting plate 402;

[0052] A plurality of clamping balls 404 are fixedly connected to the outer walls of the semi-circular lower pasting plate 401 and the semi-circular upper pasting plate 402. The plurality of clamping balls 404 are evenly distributed at equal intervals along the axial direction of the annular cavity. The plurality of clamping balls 404 are correspondingly clamped in the ball holes 204;

[0053] The strain gauge card slot 403 is formed in the middle of the inner wall of the semi-circular upper pasting plate 402.

[0054] For a further optimized solution, both ends of the semi-circular lower adhesive plate 401 and the semi-circular upper adhesive plate 402 are fixedly connected with limiting strips 405, and the limiting strips 405 are clamped in the card slots 203.

[0055] For a further optimized solution, the inner walls of the semi-circular lower adhesive plate 401, the semi-circular upper adhesive plate 402, the strain gauge card slots 403, the lower pressing plate 301, and the upper pressing plate 302 are all coated with polytetrafluoroethylene materials to prevent the adhesive from sticking to the device.

[0056] The working process of the present utility model is as follows:

[0057] S1. Before use, first install the grinding structure 5 on the annular clamping plate structure 2. The grinding structure 5 includes two semi-circular grinding plates 501. The two semi-circular grinding plates 501 enclose an annular cavity to wrap the steel bar. A number of first limiting balls 503 are fixedly connected to the outer wall of the semi-circular grinding plate 501. The number of first limiting balls 503 is evenly arranged at equal intervals along the axis direction of the annular cavity. First clamping strips 502 are fixedly connected to both sides of each semi-circular grinding plate 501, and the first clamping strips 502 are clamped in the card slots 203. Grinding abrasive cloth is fixedly connected to the inner walls of the two semi-circular grinding plates 501. After clamping the steel bar, rotate the clamp to make the grinding abrasive cloth generate friction with the surface of the steel bar to achieve the purpose of cleaning the rust on the steel bar.

[0058] S2. After grinding, remove the grinding structure 5 and install the cleaning structure 6. The cleaning structure 6 includes two semi-circular cleaning plates 601. The two semi-circular cleaning plates 601 enclose an annular cavity to wrap the steel bar. A number of second limiting balls 603 are fixedly connected to the outer wall of the semi-circular cleaning plate 601. The number of second limiting balls 603 is evenly arranged at equal intervals along the axis direction of the annular cavity. Second clamping strips 602 are fixedly connected to both sides of each semi-circular cleaning plate 601, and the second clamping strips 602 are clamped in the card slots 203. Cleaning cloth is fixedly connected to the inner walls of the two semi-circular cleaning plates 601. After clamping the steel bar, rotate the clamp to make the cleaning cloth clean the surface of the ground steel bar.

[0059] S3. After cleaning, remove the cleaning structure 6, install the strain gauge pasting structure 4 on the annular clamping plate structure 2, then manually apply glue at the pasting position, correctly paste the strain gauge on the steel bar, clamp the strain gauge with a clamp, the strain gauge is accommodated in the strain gauge card slot 403, and the depth of the strain gauge card slot 403 can accommodate the strain gauge to limit the strain gauge from deviating in all directions, fix the strain gauge until the strain gauge is firmly pasted on the surface of the steel bar, and the excess glue can be discharged through the drain hole 303.

[0060] After that, the preparation for pasting the next strain gauge can be started. When working, multiple clamps and multiple strain gauge pasting structures 4, grinding structures 5, and cleaning structures 6 can be prepared, and the pasting work of multiple strain gauges can be carried out simultaneously.

[0061] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0062] The embodiments described above are only descriptions of the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model should fall within the protection scope determined by the claims of the present utility model.

Claims

1. A strain gauge pasting device, characterized in that: include: A clamping structure (1), wherein the clamping end of the clamping structure (1) is fixedly connected to an annular clamping plate structure (2), the annular clamping plate structure (2) is used to clamp the steel bar, and an end of the annular clamping plate structure (2) away from the clamping structure (1) is fixedly connected to a dischargeable hydraulic plate structure (3), the dischargeable hydraulic plate structure (3) is used to compress the strain gauge and discharge excess glue; A strain gauge pasting structure (4) is provided on the inner side of the annular clamping plate structure (2), and the strain gauge pasting structure (4) is used to past the strain gauge mounted on the strain gauge pasting structure (4) onto the steel bar accordingly; A strain gauge slot (403) for placing the strain gauge is provided in the middle of the inner wall of the strain gauge bonding structure (4), and the strain gauge slot (403) is used to prevent the strain gauge from deviating in all directions.

2. A strain gauge bonding device according to claim 1, characterized in that: The clamping structure (1) comprises a lower clamping plate (101) and an upper clamping plate (102); Two lower rotating plates (104) are symmetrically fixedly connected to the middle of the side edge of the top surface of the lower clamping plate (101), and the two lower rotating plates (104) are arranged vertically to the lower clamping plate (101); Two upper rotating plates (103) are symmetrically fixedly connected to the middle of the side edge of the top surface of the upper clamping plate (102), and the two upper rotating plates (103) are arranged vertically to the upper clamping plate (102); The upper rotating plate (103) and the lower rotating plate (104) are rotatably connected via a rotating shaft (105); a torsion spring (106) is sleeved on the outer side of the rotating shaft (105); one end of the torsion spring (106) is fixedly connected to the lower clamping plate (101); and the other end of the torsion spring (106) is fixedly connected to the upper clamping plate (102).

3. A strain gauge bonding device according to claim 2, characterized in that: The annular clamping plate structure (2) comprises a semi-annular lower clamping plate (201) fixedly connected to the lower clamping plate (101) and a semi-annular upper clamping plate (202) fixedly connected to the upper clamping plate (102); the semi-annular lower clamping plate (201) and the semi-annular upper clamping plate (202) enclose an annular cavity for clamping the steel bar.

4. A strain gauge bonding device according to claim 3, characterized in that: A clamping groove (203) is left between the two ends of the semi-annular lower clamping plate (201) and the semi-annular upper clamping plate (202); The semi-annular lower clamping plate (201) and the semi-annular upper clamping plate (202) are both provided with a plurality of ball holes (204), the plurality of ball holes (204) being evenly and equidistantly distributed along the axis direction of the annular cavity, and the ball holes (204) and the clamping grooves (203) are used to tightly clamp the strain gauge pasting structure (4) in the annular cavity.

5. The strain gauge bonding device according to claim 4, characterized in that: The displaceable hydraulic plate structure (3) comprises a lower pressure plate (301) fixedly connected to the semi-annular lower clamping plate (201) and an upper pressure plate (302) fixedly connected to the semi-annular upper clamping plate (202); the lower pressure plate (301) and the upper pressure plate (302) are located at one end of the semi-annular lower clamping plate (201) and the semi-annular upper clamping plate (202) away from the torsion spring (106).

6. A strain gauge bonding device according to claim 5, characterized in that: One side of the bottom surface of the lower pressing plate (301) is concave downward, and the other side of the top surface of the upper pressing plate (302) is convex upward to form a drainage hole (303), and the drainage hole (303) located on the lower pressing plate (301) is symmetrically arranged with respect to the center of the drainage hole (303) located on the upper pressing plate (302).

7. The strain gauge bonding device according to claim 5, characterized in that: The strain gauge pasting structure (4) comprises a semi-annular lower pasting plate (401) and a semi-annular upper pasting plate (402); A plurality of locking balls (404) are fixedly connected to the outer walls of the semi-annular lower sticking plate (401) and the semi-annular upper sticking plate (402), and the plurality of locking balls (404) are evenly and equidistantly distributed along the axis direction of the annular cavity, and the plurality of locking balls (404) are correspondingly locked in the ball holes (204); The strain gauge slot (403) is provided in the middle of the inner wall of the semi-annular upper adhesive plate (402).

8. The strain gauge bonding device according to claim 7, characterized in that: The two ends of the semi-annular lower adhesive plate (401) and the semi-annular upper adhesive plate (402) are fixedly connected to limit strips (405), and the limit strips (405) are clamped in the clamping groove (203).

9. The strain gauge bonding device according to claim 7, characterized in that: The inner walls of the semi-circular lower adhesive plate (401), the semi-circular upper adhesive plate (402), the strain gauge slot (403), the lower pressing plate (301) and the upper pressing plate (302) are all coated with polytetrafluoroethylene material to prevent the glue from sticking to the device.

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