Steel structure prefabricated member stress detection device and method

Abstract

The invention relates to the field of steel structure detection equipment, in particular to a steel structure prefabricated member stress detection device and method.The steel structure prefabricated member stress detection device comprises a mounting frame and two clamping mechanisms, the two clamping mechanisms comprise outer rings arranged in the mounting frame, the inner walls of the outer rings are in bearing connection with clamping rings, and the interiors of the clamping rings are rotationally connected with three clamping rods; the ends, located on the inner sides of the clamping rings, of the clamping rods are fixedly connected with clamping heads, the ends, located on the outer sides of the clamping rings, of the clamping rods are rotationally connected with extension plates, and the extension plates are fixedly connected to the outer side walls of the clamping rings. The transmission block drives the clamping ring to rotate, so that the clamping rods and the clamping heads are driven to move, the three clamping heads approach the center of the clamping mechanism to clamp an irregular prefabricated part, the distance between the clamping mechanisms is adjusted in cooperation with the linkage rod and the double-head electric telescopic mechanism, the prefabricated part can be tested in a proper posture, and the test efficiency is improved. Therefore, the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the field of steel structure detection equipment, and particularly to a stress detection device and method for steel structure prefabricated parts. Background Art

[0002] With the need for urbanization development, urban construction and design are becoming more and more diversified. Different building shapes have different structural shapes. Before the construction process, it is necessary to comprehensively detect the prestress of the steel structure prefabricated parts to be used.

[0003] Currently, the commonly used non-destructive stress detection method is ray detection. However, due to the diverse shapes of prefabricated parts, when encountering prefabricated parts with irregular shapes, it is difficult for ray sensors to detect the central part, the applicable ability is low, it is easy to affect the measurement data, and there is a lack of a support structure for the middle part of the steel structure, which is likely to affect the structural stability of the detection process, easily affect the experimental results, and cause the authenticity and reliability of the measurement data to decline.

[0004] Therefore, it is very necessary to invent a stress detection device and method for steel structure prefabricated parts to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a stress detection device and method for steel structure prefabricated parts. By clamping the prefabricated parts through a clamping mechanism, it solves the problems in the prior art that when encountering prefabricated parts with irregular shapes, it is difficult for ray sensors to detect the central part, the applicable ability is low, it is easy to affect the measurement data, and there is a lack of a support structure for the middle part of the steel structure, which is likely to affect the structural stability of the detection process, easily affect the experimental results, and cause the authenticity and reliability of the measurement data to decline.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A stress detection device for steel structure prefabricated parts, including a mounting frame and two groups of clamping mechanisms. The two groups of clamping mechanisms include an outer ring arranged inside the mounting frame. The inner wall of the outer ring is connected to a clamping ring by a bearing. Three clamping rods are rotatably connected inside the clamping ring. One end of the clamping rod located inside the clamping ring is fixedly connected to a clamping head. One end of the clamping rod located outside the clamping ring is rotatably connected to an extension plate, and the extension plate is fixedly connected to the outer side wall of the outer ring.

[0007] As a preferred solution of the present invention, a lifting cylinder is fixedly connected to the top of the mounting frame. The output end of the lifting cylinder is fixedly connected to a lifting block. A ray emitter is fixedly connected to the bottom end of the lifting block. A signal receiver is fixedly connected to the bottom end of the lifting block. The ray emitter and the signal receiver are symmetrically distributed around the central axis of the lifting block. A pressure sensor is fixedly connected to the bottom end of the lifting block.

[0008] As a preferred embodiment of the present invention, a fixing plate is fixedly connected to the top end of the outer ring. A fixing frame is fixedly connected to one side of the fixing plate. A clamping motor is fixedly connected to one side of the fixing frame. The output end of the clamping motor is fixedly connected to a threaded rod, and a transmission block is threadedly connected to the outer side of the threaded rod.

[0009] As a preferred embodiment of the present invention, one side of the transmission block slides on one side of the fixing plate. The bottom end of the transmission block is rotatably connected to a telescopic rod, and the bottom end of the telescopic rod is rotatably connected to the top end of the clamping ring.

[0010] As a preferred embodiment of the present invention, an adjustment chute is provided on the bottom wall of the mounting frame. A sliding column slides inside the adjustment chute. A sliding seat is fixedly sleeved on the outer side of the sliding column, and the sliding seat slides on the bottom wall of the mounting frame.

[0011] As a preferred embodiment of the present invention, an annular groove is provided on one side of the outer ring. Two fixing rods slide inside the annular groove. A rubber sleeve is sleeved on the outer side of the fixing rod, and the bottom end of the fixing rod is fixedly connected to the top end of the sliding seat.

[0012] As a preferred embodiment of the present invention, a base is fixedly connected to the bottom end of the mounting frame. The lower half of the sliding column is located inside the base. An adjustment motor is installed on one side of the sliding column. The output end of the adjustment motor is sleeved with a transmission belt, and the transmission belt is located inside the sliding column.

[0013] As a preferred embodiment of the present invention, a driven gear is rotatably connected to one side of the upper half of the sliding column. The rotating shaft of the driven gear is wrapped on the top of the transmission belt. The top end of the driven gear meshes with an adjustment tooth, and the adjustment tooth is fixedly connected to the outer side wall of the outer ring.

[0014] As a preferred embodiment of the present invention, a double-headed electric telescopic mechanism is fixedly connected to the top wall of the base. The output ends of both ends of the double-headed electric telescopic mechanism are fixedly connected to a linkage rod, and the linkage rod is fixedly connected to one side of the sliding column.

[0015] A method for detecting the stress of a steel structure prefabricated part includes the steel structure prefabricated part stress detection device as described above. The specific steps are as follows:

[0016] S1. Preparation step: Insert the prefabricated part into the inside of the two clamping mechanisms, and start the double-headed electric telescopic mechanism to adjust the distance between the clamping mechanisms according to the length of the detection section of the prefabricated part;

[0017] S2. Clamping step: After the clamping mechanisms adjust the spacing, start the clamping motor to drive the transmission block and the clamping ring to rotate, so that the three clamping heads approach the center of the outer ring until stable clamping of the prefabricated part is achieved;

[0018] S3. Detection step: After clamping is completed, start the lifting cylinder to drive the ray emitter to descend, so that the lifting block and the pressure sensor respectively perform stress and strength detection on the prefabricated part. After the detection is completed, make the lifting cylinder drive the lifting block to reset, start the adjustment motor to drive the outer ring to rotate and adjust the detection surface of the prefabricated part. After the adjustment is completed, repeat the above steps to comprehensively detect the prefabricated part.

[0019] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0020] 1. Drive the rotation of the clamping ring through the transmission block, thereby driving the activities of the clamping rod and the clamping head, making the three clamping heads approach the center of the clamping mechanism to clamp the irregular prefabricated part, and cooperate with the linkage rod and the double-headed electric telescopic mechanism to adjust the distance of the clamping mechanism, so that the prefabricated part can be tested in a suitable posture, thereby improving the detection accuracy;

[0021] 2. Drive the rotation of the transmission belt and the driven gear through the adjustment motor, so that the prefabricated part can rotate around the center of the clamping mechanism in the clamped state, thereby measuring multiple angles of the prefabricated part without repeated clamping, further improving the measurement accuracy. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Front view structural schematic diagram of the clamping mechanism of the present invention;

[0024] Figure 2 Main body structural schematic diagram of the present invention;

[0025] Figure 3 Side view structural schematic diagram of the clamping mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged schematic diagram at position A;

[0027] Figure 5 Three-dimensional structural schematic diagram of the mounting frame of the present invention;

[0028] Figure 6 Enlarged three-dimensional structural schematic diagram of the lifting block of the present invention.

[0029] Explanation of the reference numerals in the drawings:

[0030] 1. Mounting frame; 2. Clamping mechanism; 201. Outer ring; 202. Clamping ring; 203. Clamping rod; 204. Clamping head; 205. Extension plate; 301. Lifting block; 302. Ray emitter; 303. Signal receiver; 304. Pressure sensor; 4. Lifting cylinder; 5. Base; 601. Fixed plate; 602. Fixed frame; 603. Clamping motor; 604. Threaded rod; 605. Transmission block; 7. Adjusting tooth; 8. Fixed rod; 9. Sliding column; 10. Sliding seat; 11. Adjusting motor; 12. Linking rod; 13. Transmission belt; 14. Driven gear; 15. Rubber sleeve; 16. Annular groove; 17. Spacing adjustment chute; 18. Double-headed electric telescopic mechanism. Detailed implementation mode

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0032] The present invention provides a stress detection device for steel structure prefabricated parts as shown in Figures 1-6 which includes a mounting frame ① and two groups of clamping mechanisms ②. The two groups of clamping mechanisms ② include an outer ring 201 arranged inside the mounting frame ①. The inner wall of the outer ring 201 is connected to the clamping ring 202 by a bearing, so as to realize the rotation of the clamping ring 202 inside the outer ring 201. Three clamping rods 203 are rotatably connected inside the clamping ring 202. One end of the clamping rod 203 located inside the clamping ring 202 is fixedly connected to a clamping head 204. The clamping rod 203 drives the clamping head 204 to clamp the prefabricated part. One end of the clamping rod 203 located outside the clamping ring 202 is rotatably connected to an extension plate 205, and the extension plate 205 is fixedly connected to the outer side wall of the outer ring 201. The top end of the outer ring 201 is fixedly connected to a fixed plate 601 for fixing subsequent parts. One side of the fixed plate 601 is fixedly connected to a fixed frame 602. One side of the fixed frame 602 is fixedly connected to a clamping motor 603. The output end of the clamping motor 603 is fixedly connected to a threaded rod 604, and the outer side of the threaded rod 604 is threadedly connected to a transmission block 605. The clamping motor 603 drives the threaded rod 604 to rotate. One side of the transmission block 605 slides on one side of the fixed plate 601. The bottom end of the transmission block 605 is rotatably connected to a telescopic rod, and the bottom end of the telescopic rod is rotatably connected to the top end of the clamping ring 202. Thus, the rotation of the clamping ring 202 is driven by the transmission block 605 to drive the movement of the clamping head 204. The clamping ring 202 is driven to rotate counterclockwise by the rotation of the transmission block 605, so that the clamping rod 203 rotates around its fixed point with the clamping head 204, so that the clamping head 204 is driven by the clamping rod 203 to approach the center of the clamping mechanism 2, and finally the clamping of irregular clamping parts is realized, so that the prefabricated part can be tested in a suitable posture, thereby improving the accuracy of detection.

[0033] As shown in Figures 1-6As shown, a lifting cylinder 4 is fixedly connected to the top end of the mounting bracket 1. The output end of the lifting cylinder 4 is fixedly connected to a lifting block 301. The bottom end of the lifting block 301 is fixedly connected to a ray emitter 302. The bottom end of the lifting block 301 is fixedly connected to a signal receiver 303. The ray emitter 302 and the signal receiver 303 are symmetrically distributed around the central axis of the lifting block 301. The bottom end of the lifting block 301 is fixedly connected to a pressure sensor 304.

[0034] As Figures 1-6 shown, an adjustment sliding groove 17 is formed in the bottom wall of the mounting bracket 1. A sliding column 9 slides inside the adjustment sliding groove 17. A sliding seat 10 is fixedly sleeved on the outer side of the sliding column 9. The sliding seat 10 slides on the bottom wall of the mounting bracket 1. The sliding of the sliding column 9 is realized through the adjustment sliding groove 17. An annular groove 16 is formed in one side of the outer ring 201. Two fixing rods 8 are slidably connected inside the annular groove 16. A rubber sleeve 15 is sleeved on the outer side of the fixing rod 8. The bottom end of the fixing rod 8 is fixedly connected to the top end of the sliding seat 10. The support for the clamping mechanism 2 is realized through the cooperation of the fixing rod 8 and the annular groove 16, thereby assisting in realizing the rotation of the outer ring 201.

[0035] As Figures 1-6 shown, a base 5 is fixedly connected to the bottom end of the mounting bracket 1. The lower half of the sliding column 9 is located inside the base 5. An adjustment motor 11 is installed on one side of the sliding column 9. A transmission belt 13 is sleeved on the output end of the adjustment motor 11. The transmission belt 13 is located inside the sliding column 9. One side of the upper half of the sliding column 9 is rotatably connected to a driven gear 14. The rotating shaft of the driven gear 14 is wrapped on the top of the transmission belt 13. The top end of the driven gear 14 meshes with an adjustment gear 7. The adjustment gear 7 is fixedly connected to the outer side wall of the outer ring 201. By driving the rotation of the transmission belt 13 and the driven gear 14 by the adjustment motor 11, the prefabricated part can rotate around the center of the clamping mechanism 2 in the clamped state, so as to measure multiple angles of the prefabricated part without repeated clamping, further improving the measurement accuracy.

[0036] As Figures 1-6 shown, a double-headed electric telescopic mechanism 18 is fixedly connected to the top wall of the base 5. The output ends of both ends of the double-headed electric telescopic mechanism 18 are fixedly connected to a linkage rod 12. The linkage rod 12 is fixedly connected to one side of the sliding column 9. The distance between the clamping mechanisms 2 is adjusted by using the linkage rod 12 and the double-headed electric telescopic mechanism 18, which is convenient for the detection of the prefabricated part.

[0037] A method for stress detection of a steel structure prefabricated part includes the steel structure prefabricated part stress detection device as above. The specific steps are as follows:

[0038] S1. Preparation step: Insert the prefabricated part into the inside of the two clamping mechanisms 2, and start the double-headed electric telescopic mechanism 18 to adjust the distance between the clamping mechanisms 2 according to the length of the detection section of the prefabricated part;

[0039] S2. Clamping step: After the clamping mechanism 2 adjusts the distance, start the clamping motor 603 to drive the transmission block 605 and the clamping ring 202 to rotate, so that the three clamping heads 204 approach the center of the outer ring 201 until a stable clamping of the prefabricated part is achieved;

[0040] S3. Detection step: After the clamping is completed, start the lifting cylinder 4 to drive the ray emitter 302 to descend, so that the lifting block 301 and the pressure sensor 304 respectively perform stress and strength detection on the prefabricated part. After the detection is completed, make the lifting cylinder 4 drive the lifting block 301 to reset, start the adjustment motor 11 to drive the outer ring 201 to rotate to adjust the detection surface of the prefabricated part, and repeat the above steps after the adjustment is completed to perform a comprehensive detection on the prefabricated part.

[0041] Working principle:

[0042] As Figures 1-6 shown, when it is necessary to clamp an irregular prefabricated part, first place it inside the clamping mechanism 2, and start the double-headed electric telescopic mechanism 18 to adjust the distance between the clamping mechanisms 2 to determine the clamping section. Subsequently, start the clamping motor 603, use the clamping motor 603 to drive the threaded rod 604 to rotate, drive the clamping ring 202 to rotate counterclockwise through the rotation of the transmission block 605, so that the clamping rod 203 rotates around its fixed point with the clamping head 204, so that the clamping head 204 is driven by the clamping rod 203 to approach the center of the clamping mechanism 2, and finally the clamping of the irregular clamping part is realized, so that the prefabricated part can be tested in a suitable posture, thereby improving the accuracy of the detection. Subsequently, start the lifting cylinder 4 to lower the lifting block 301 to the working position, so that the ray emitter 302 emits a signal to reach the surface of the prefabricated part and is reflected, so that the signal receiver 303 receives the signal and analyzes it. At the same time, the pressure sensor 304 presses the detection section to test its strength. When the test of this angle is completed, make the lifting block 301 reset, start the adjustment motor 11 to drive the rotation of the transmission belt 13 and the driven gear 14, so as to drive the rotation of the adjustment tooth 7 and the outer ring 201 to adjust the test angle of the prefabricated part, and start the lifting cylinder 4 again for detection, and finally realize the multi-angle test of the prefabricated part to improve the test accuracy.

[0043] Only some exemplary embodiments of the present invention are described in the above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A stress detection device for a steel structure prefabricated component, comprising a mounting frame (1) and two sets of clamping mechanisms (2), characterized in that: The two sets of clamping mechanisms (2) include an outer ring (201) disposed inside the mounting frame (1). The inner wall of the outer ring (201) is connected to a clamping ring (202) by a bearing. Inside the clamping ring (202), three clamping rods (203) are rotatably connected. One end of the clamping rod (203) located inside the clamping ring (202) is fixedly connected to a clamping head (204). One end of the clamping rod (203) located outside the clamping ring (202) is rotatably connected to an extension plate (205), and the extension plate (205) is fixedly connected to the outer side wall of the outer ring (201).

2. The stress detection device for a steel structure prefabricated part according to claim 1, wherein: At the top of the mounting frame (1), a lifting cylinder (4) is fixedly connected. The output end of the lifting cylinder (4) is fixedly connected to a lifting block (301). At the bottom end of the lifting block (301), a ray emitter (302) is fixedly connected. At the bottom end of the lifting block (301), a signal receiver (303) is fixedly connected. The ray emitter (302) and the signal receiver (303) are symmetrically distributed around the central axis of the lifting block (301). At the bottom end of the lifting block (301), a pressure sensor (304) is fixedly connected.

3. The stress detection device for a steel structure prefabricated part according to claim 1, characterized in that: At the top of the outer ring (201), a fixing plate (601) is fixedly connected. On one side of the fixing plate (601), a fixing frame (602) is fixedly connected. On one side of the fixing frame (602), a clamping motor (603) is fixedly connected. The output end of the clamping motor (603) is fixedly connected to a threaded rod (604), and the outer side of the threaded rod (604) is threadedly connected to a transmission block (605).

4. A stress detection device for a steel structure prefabricated part according to claim 3, characterized in that: One side of the transmission block (605) slides on one side of the fixing plate (601). The bottom end of the transmission block (605) is rotatably connected to a telescopic rod, and the bottom end of the telescopic rod is rotatably connected to the top of the clamping ring (202).

5. The stress detection device for a steel structure prefabricated part according to claim 1, wherein: On the bottom wall of the mounting frame (1), an adjustment sliding groove (17) is formed. Inside the adjustment sliding groove (17), a sliding column (9) slides. A sliding seat (10) is fixedly sleeved on the outer side of the sliding column (9), and the sliding seat (10) slides on the bottom wall of the mounting frame (1).

6. The stress detection device for a steel structure prefabricated part according to claim 1, characterized in that: On one side of the outer ring (201), an annular groove (16) is formed. Inside the annular groove (16), two fixing rods (8) slide. A rubber sleeve (15) is sleeved on the outer side of the fixing rod (8). The bottom end of the fixing rod (8) is fixedly connected to the top of the sliding seat (10).

7. An apparatus for stress detection of a steel structure prefabricated part according to claim 5, characterized in that: At the bottom of the mounting frame (1), a base (5) is fixedly connected. The lower half of the sliding column (9) is located inside the base (5). On one side of the sliding column (9), an adjustment motor (11) is installed. The output end of the adjustment motor (11) is sleeved with a transmission belt (13), and the transmission belt (13) is located inside the sliding column (9).

8. The stress detection device for a steel structure prefabricated component according to claim 5, wherein: On one side of the upper half of the sliding column (9), a driven gear (14) is rotatably connected. The rotating shaft of the driven gear (14) is wrapped by the top of the transmission belt (13). The top of the driven gear (14) meshes with an adjustment tooth (7), and the adjustment tooth (7) is fixedly connected to the outer side wall of the outer ring (201).

9. The stress detection device for a steel structure prefabricated part according to claim 7, characterized in that: The top wall of the base (5) is fixedly connected with a double-headed electric telescopic mechanism (18). The output ends of both ends of the double-headed electric telescopic mechanism (18) are fixedly connected with linkage rods (12), and the linkage rods (12) are fixedly connected to one side of the sliding column (9).

10. A method for detecting the stress of a steel structure prefabricated part, including the steel structure prefabricated part stress detection device according to any one of claims 1-9, characterized in that: The processing steps are as follows: S1. Preparation step: Insert the prefabricated part into the two sets of clamping mechanisms (2), and start the double-headed electric telescopic mechanism (18) to adjust the distance between the clamping mechanisms (2) according to the length of the detection section of the prefabricated part. S2. Clamping step: After the clamping mechanisms (2) adjust the spacing, start the clamping motor (603) to drive the transmission block (605) and the clamping ring (202) to rotate, so that the three clamping heads (204) approach the center of the outer ring (201) until a stable clamping of the prefabricated part is formed. S3. Detection step: After clamping, start the lifting cylinder (4) to drive the ray emitter (302) to descend, so that the lifting block (301) and the pressure sensor (304) respectively detect the stress and strength of the prefabricated part. After the detection is completed, make the lifting cylinder (4) drive the lifting block (301) to reset, start the adjustment motor (11) to drive the outer ring (201) to rotate to adjust the detection surface of the prefabricated part, and repeat the above steps after the adjustment is completed to comprehensively detect the prefabricated part.

Images