Steel structure fatigue damage detection device

Abstract

The invention discloses a steel structure fatigue damage detection device, and relates to the technical field of steel structure detection.The steel structure fatigue damage detection device comprises a steel structure body and a base, two side plates are fixedly installed on the base, a plurality of cross beams are fixedly installed between the two side plates, and limiting assemblies are installed on the two side plates; the two limiting assemblies are matched with the front end and the rear end of the steel structure body correspondingly, a detection assembly is installed between every two transverse beams corresponding in left-right position, and the two detection assemblies are matched with the upper end and the lower end of the steel structure body correspondingly. The automatic feeding device has the advantages that stable pushing feeding can be automatically conducted on a steel structure body in the detection process, manual operation is not needed, the problem of result errors caused by manual intervention is effectively avoided, the accuracy of the detection result is guaranteed, the working efficiency is greatly improved, and the labor intensity of workers is reduced. And in the pushing and feeding process, the cleaning plate can be driven to automatically reciprocate up and down, so that the cleaning plate can effectively clean the steel structure body in the moving process.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure detection, and in particular to a steel structure fatigue damage detection device. Background Art

[0002] Steel structure is mainly composed of steel beams, steel columns, steel trusses and other components made of steel sections and steel plates. It is one of the main types of building structures. Fatigue damage of steel structure is an important issue in the current use of steel structure, which is directly related to the safety performance of steel structure buildings. Therefore, before the steel structure is put into use after production, it is necessary to detect its fatigue damage.

[0003] During use, the existing steel structure fatigue damage detection device cannot automatically complete the advancement of the steel structure during the detection process. Since the steel structure is generally large in size, manual cooperation is required at this time, which is labor-intensive. In addition, manual participation will lead to the problem of insufficient stability in the advancement process, affecting the accuracy of the detection results. Moreover, the existing detection device does not have the function of automatically cleaning the side of the steel structure. After the detection is completed, the steel structure still needs to be manually cleaned. Therefore, it is necessary to design a steel structure fatigue damage detection device. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a steel structure fatigue damage detection device, which solves the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A steel structure fatigue damage detection device comprises a steel structure body and a base, wherein two side panels are fixedly mounted on the base, and a plurality of cross beams are fixedly mounted between the two side panels, limiting components are mounted on the two side panels, and the two limiting components respectively cooperate with the front and rear ends of the steel structure body, a detection component is mounted between the cross beams corresponding to every two left and right positions, and the two detection components respectively cooperate with the upper and lower ends of the steel structure body, a pushing component is mounted on the base, and the pushing component cooperates with one of the detection components, a cleaning mechanism is mounted on the two limiting components, and the two cleaning mechanisms respectively cooperate with the front and rear ends of the steel structure body 1, and the cleaning mechanism comprises a cleaning plate.

[0006] Furthermore, a positioning block is fixedly installed at one end of each of the cross beams close to the steel structure body, and each positioning block abuts against the steel structure body.

[0007] Furthermore, the limiting assembly consists of a receiving groove, a limiting plate and a plurality of compression springs. The receiving groove is opened on the side wall of one end of the side plate close to the steel structure body. The limiting plate is slidably installed in the receiving groove. The plurality of compression springs are installed between the receiving groove and the limiting plate.

[0008] Furthermore, guide grooves are provided on the left and right side walls of the accommodating groove, and guide blocks that slide in cooperation with the corresponding guide grooves are fixedly mounted on the left and right side walls of the limiting plate.

[0009] Furthermore, a groove is provided on the side wall of one end of the limit plate close to the steel structure body, and a rotating shaft is rotatably installed in the groove, a rolling column is fixedly installed on the rotating shaft, and the rolling column is in contact with the side wall of the steel structure body.

[0010] Furthermore, a reciprocating screw is fixedly installed on one of the rolling columns, a lifting groove is opened on the side wall of the limit plate, and a reciprocating slide rod threadedly connected to the reciprocating screw is slidably installed in the lifting groove, a cleaning plate is fixedly installed on one end of the reciprocating slide rod located outside the limit plate, and the cleaning plate cooperates with the steel structure body.

[0011] Furthermore, the detection assembly consists of a mounting frame, a servo motor, a screw rod 1, a detection plate and a plurality of pressure sensors. The mounting frame is fixedly mounted between two beams, the servo motor is fixedly mounted on the side wall of the mounting frame, the screw rod 1 is fixedly connected to the output end of the servo motor, and a connecting block is threadedly connected to the screw rod 1, the detection plate is fixedly mounted on the connecting block, and the plurality of pressure sensors are all mounted on one end of the detection plate close to the steel structure body through a telescopic mechanism, and the plurality of pressure sensors are staggered with each other.

[0012] Furthermore, the telescopic mechanism consists of a telescopic slot, a connecting column and a spring. The telescopic slot is opened on the side wall of the detection plate, the connecting column is slidably installed on the telescopic slot, and the connecting column is fixedly connected to the pressure sensor. The spring is installed between the telescopic slot and the connecting column.

[0013] Furthermore, the pushing assembly includes a slide groove, a support rod, a second screw rod and a push plate. The slide groove is opened on the base, the support rod is slidably installed in the slide groove, the push plate is fixedly installed on the support rod, and the push plate cooperates with the left side of the steel structure body. The second screw rod is rotatably installed on the base, and one end of the second screw rod located in the slide groove is threadedly connected to the support rod.

[0014] Furthermore, a fixed gear ring is fixedly installed on the screw rod 2, and a fixed gear meshing with the fixed gear ring is fixedly installed on the screw rod 1 located at the lower end, the tooth spacing of the fixed gear is equal to the tooth spacing of the fixed gear ring, and the diameter and number of teeth of the fixed gear are both larger than the fixed gear ring, and a scanner is fixedly installed on one end of the detection plate close to the steel structure body.

[0015] Compared with the prior art, the present invention has the following advantages: 1: Through the cooperation of two detection components, fatigue damage detection can be carried out on the upper and lower surfaces of the steel structure body at the same time, which effectively improves the work efficiency. In addition, during the detection process, multiple staggered pressure sensors can ensure the coverage of the upper and lower surfaces of the steel structure body to avoid missed detection.

[0016] 2: Through the cooperation of the positioning block and the limit assembly, the position of the steel structure body on the device can be effectively limited, avoiding the problem of position deviation of the steel structure body during the detection process leading to errors in the detection results, thereby improving the accuracy of the detection results.

[0017] 3: Through the cooperation of the pushing component, the fixed gear ring and the fixed gear, the pushing and feeding of the steel structure body can be automatically and synchronously completed during the detection process, which effectively ensures the detection of the entire steel structure body, while avoiding the problem of result errors caused by manual intervention, and further improves the accuracy of the detection results.

[0018] 4: Through the cooperation of the rolling column, reciprocating screw and reciprocating slide rod, the cleaning plate can automatically reciprocate up and down in the process of pushing the steel structure body, so that it can effectively clean the steel structure body during its movement and ensure the cleanliness.

[0019] To sum up, the present invention can automatically push and feed the steel structure body stably during the detection process without manual operation, effectively avoiding the problem of errors in the results caused by manual intervention, ensuring the accuracy of the detection results, and greatly improving work efficiency. In addition, the cleaning plate can be driven to automatically reciprocate up and down during the pushing and feeding process, so that it can effectively clean the steel structure body during the movement of the steel structure body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a steel structure fatigue damage detection device proposed by the present invention; Figure 2 for Figure 1 Schematic diagram of the structure after removing the steel structure body; Figure 3 for Figure 2 A longitudinal section view based on the center line of the base; Figure 4 for Figure 2 Schematic diagram of the structure after removing the base and side panels; Figure 5 for Figure 2 Schematic diagram of the two side panels and the structure between them; Figure 6 for Figure 5 An enlarged schematic diagram of the structure at one of the side panels; Figure 7 for Figure 6An enlarged schematic diagram of the structure at the middle limit plate; Figure 8 for Figure 7 An enlarged schematic diagram of the structure at the middle cleaning plate; Fig. 9 for Figure 2 An enlarged schematic diagram of the structure at one of the detection panels; Fig.10 for Fig. 9 A magnified schematic diagram of the structure at one of the pressure sensors.

[0021] In the figure: 1 steel structure body, 2 base, 3 side plate, 4 crossbeam, 5 mounting frame, 6 servo motor, 7 screw rod 1, 8 detection plate, 9 pressure sensor, 10 scanner, 11 connecting column, 12 spring, 13 slide groove, 14 push plate, 15 support rod, 16 screw rod 2, 17 fixed gear ring, 18 fixed gear, 19 positioning block, 20 limit plate, 21 rolling column, 22 reciprocating screw, 23 reciprocating slide rod, 24 cleaning plate. DETAILED DESCRIPTION

[0022] Reference Figure 1-Figure 10 A steel structure fatigue damage detection device includes a steel structure body 1 and a base 2, two side plates 3 are fixedly installed on the base 2, and a plurality of beams 4 are fixedly installed between the two side plates 3, and a positioning block 19 is fixedly installed at one end of each beam 4 close to the steel structure body 1, and each positioning block 19 is against the steel structure body 1. Through the cooperation of the plurality of positioning blocks 19, the position of the steel structure body 1 between the plurality of beams 4 can be limited, so as to improve the stability of the steel structure body 1 during the detection process, thereby reducing the possibility of detection errors.

[0023] Limiting components are installed on both side panels 3, and the two limiting components are respectively matched with the front and rear ends of the steel structure body 1. The limiting components are composed of a receiving groove, a limiting plate 20 and a plurality of compression springs. The receiving groove is opened on the side wall of one end of the side panel 3 close to the steel structure body 1, and the limiting plate 20 is slidably installed in the receiving groove. A plurality of compression springs are installed between the receiving groove and the limiting plate 20. Under the elastic force of the plurality of compression springs, the limiting plates 20 on both sides can simultaneously apply a force to the steel structure body 1 to approach its center line. Combined with the action of the plurality of positioning blocks 19, the stability of the steel structure body 1 during the detection process can be further ensured.

[0024] Guide grooves are provided on the left and right side walls of the accommodating groove, and guide blocks that slide in cooperation with the corresponding guide grooves are fixedly installed on the left and right side walls of the limiting plate 20. Through the cooperation between the guide blocks and the guide grooves, the connection effect between the limiting plate 20 and the accommodating groove can be effectively guaranteed to avoid separation or angle deviation problems.

[0025] A detection component is installed between each two corresponding beams 4 at the left and right positions, and the two detection components are matched with the upper and lower ends of the steel structure body 1 respectively. The detection component consists of a mounting frame 5, a servo motor 6, a screw rod 7, a detection plate 8 and a plurality of pressure sensors 9. The mounting frame 5 is fixedly installed between the two beams 4, the servo motor 6 is fixedly installed on the side wall of the mounting frame 5, the screw rod 7 is fixedly connected to the output end of the servo motor 6, and a connecting block is threadedly connected to the screw rod 7, and the detection plate 8 is fixedly installed on the connecting block. Multiple pressure sensors 9 are all installed on the detection plate 8 close to the end of the steel structure body 1 through a telescopic mechanism. The positions of the multiple pressure sensors 9 are staggered with each other. When the steel structure body 1 is detected, it is arranged according to the pressure sensor 9. Figure 1 As shown, it is placed on the device. At this time, the multiple pressure sensors 9 on the two detection plates 8 are respectively attached to the upper and lower surfaces of the steel structure body 1, and then the servo motor 6 is started. With the cooperation of the screw rod 7 and the connecting block, the detection plate 8 moves left and right relative to the steel structure body 1. During the movement, if there are cracks or unevenness on the surface of the steel structure body 1, the pressure value detected by the corresponding pressure sensor 9 will change. At this time, the fatigue damage result of the steel structure body 1 can be judged by the value change detected by the pressure sensor 9. The purpose of staggered arrangement of the multiple pressure sensors 9 is to ensure the coverage of the surface of the steel structure body 1 and avoid missed detection areas. At the same time, multiple pressure sensors 9 are arranged to make the contact area between each pressure sensor 9 and the steel structure body 1 smaller, thereby effectively improving the detection accuracy.

[0026] A scanner 10 is fixedly installed at one end of the detection plate 8 close to the steel structure body 1. The scanner 10 is designed to scan and detect the surface of the steel structure body 1. In combination with the detection result of the pressure sensor 9, the accuracy of the detection result can be further improved.

[0027] The telescopic mechanism consists of a telescopic slot, a connecting column 11 and a spring 12. The telescopic slot is opened on the side wall of the detection plate 8. The connecting column 11 is slidably installed on the telescopic slot, and the connecting column 11 is fixedly connected to the pressure sensor 9. The spring 12 is installed between the telescopic slot and the connecting column 11. Through the design of the spring 12, it can effectively ensure that the pressure sensor 9 can be in contact with the surface of the steel structure body 1. Therefore, different pressure values ​​can be better detected according to the surface conditions of the steel structure body 1, and then the fatigue damage result of the steel structure body 1 can be judged by the change of the pressure value.

[0028] A pushing assembly is installed on the base 2, and the pushing assembly includes a slide groove 13, a support rod 15, a second screw rod 16 and a push plate 14. The slide groove 13 is opened on the base 2, and the support rod 15 is slidably installed in the slide groove 13. The push plate 14 is fixedly installed on the support rod 15, and the push plate 14 cooperates with the left side of the steel structure body 1. The second screw rod 16 is rotatably installed on the base 2, and one end of the second screw rod 16 located in the slide groove 13 is threadedly connected to the support rod 15. With the cooperation of the second screw rod 16 and the support rod 15, the push plate 14 can be moved left and right on the base 2. Therefore, there is no need to manually push the steel structure body 1 during the detection process, which can reduce the labor intensity and avoid detection errors caused by manual intervention.

[0029] The pushing assembly cooperates with one of the detection assemblies. A fixed gear ring 17 is fixedly installed on the screw rod 2 16. A fixed gear 18 meshing with the fixed gear ring 17 is fixedly installed on the screw rod 1 7 at the lower end. The tooth spacing of the fixed gear 18 is equal to the tooth spacing of the fixed gear ring 17, and the diameter and the number of teeth of the fixed gear 18 are greater than the fixed gear ring 17. When the screw rod 1 7 rotates to make the detection plate 8 move to the left relative to the base 2, the cooperation of the fixed gear 18 and the fixed gear ring 17 can make the screw rod 2 16 rotate in the opposite direction. At this time, the cooperation of the screw rod 2 16 and the support rod 15 is used to make the push plate 14 at the bottom The seat 2 moves to the right, thereby pushing the steel structure body 1. Since the diameter and the number of teeth of the fixed gear 18 are greater than those of the fixed gear ring 17, the screw rod 16 will rotate at a faster speed under the transmission action of the screw rod 1 7, so that the detection plate 8 can drive the push plate 14 to push the steel structure body 1 to move a larger distance when moving a smaller distance. The two cooperate with each other to effectively complete the overall detection of the steel structure body 1, and can also smoothly remove the steel structure body 1 from the device when the detection is completed. The overall operation does not require manual processing, has a high degree of automation, and has accurate detection results.

[0030] A cleaning mechanism is installed on both limit assemblies, and the two cleaning mechanisms are respectively matched with the front and rear ends of the steel structure body 1. The cleaning mechanism includes a cleaning plate 24. A groove is opened on the side wall of the limit plate 20 close to the steel structure body 1, and a rotating shaft is rotatably installed in the groove. A rolling column 21 is fixedly installed on the rotating shaft, and the rolling column 21 is attached to the side wall of the steel structure body 1. Since the push plate 14 will push the steel structure body 1 to move relative to the two limit plates 20 during the detection process, the setting of the rolling column 21 can reduce the moving friction between the limit plate 20 and the steel structure body 1, so that the steel structure body 1 can move more smoothly on the device.

[0031] A reciprocating screw 22 is fixedly installed on one of the rolling columns 21, and a lifting groove is opened on the side wall of the limit plate 20, and a reciprocating slide rod 23 threadedly connected to the reciprocating screw 22 is slidably installed in the lifting groove, and a cleaning plate 24 is fixedly installed on one end of the reciprocating slide rod 23 located outside the limit plate 20, and the cleaning plate 24 cooperates with the steel structure body 1. When the steel structure body 1 moves relative to the limit plate 20, the friction between it and the rolling column 21 can drive the rotating shaft to rotate. At this time, the reciprocating screw 22 will rotate at the same time, and the cleaning plate 24 is driven to move up and down on the limit plate 20 by the cooperation between the reciprocating screw 22 and the reciprocating slide rod 23. At this time, the steel structure body 1 keeps moving, so the cleaning plate 24 can be effectively used to clean the front and back surfaces of the steel structure body 1.

[0032] The servo motor 6, the pressure sensor 9 and the scanner 10 are all existing products, and their working principles and specific structures are not elaborated here.

[0033] In the present invention, a steel structure fatigue damage detection device works as follows: The placement and limitation of the steel structure body 1: Figure 1 The steel structure body 1 is placed on the base 2. Under the action of multiple positioning blocks 19, the upper and lower positions of the steel structure body 1 on the device are limited. At the same time, the elastic force of the compression spring allows the two limit plates 20 to limit the front and rear positions of the steel structure body 1, thereby ensuring the stability of the steel structure body 1 during the detection process. Detection processing: start the two servo motors 6 to make the detection plate 8 act to the left on the base 2. During this process, multiple pressure sensors 9 contact and move with the upper and lower surfaces of the steel structure body 1. The fatigue damage of the upper and lower surfaces of the steel structure body 1 is judged by the change of pressure values. At the same time, the scanner 10 scans and detects the upper and lower surfaces of the steel structure body 1; Pushing process: When the servo motor 6 is working, it drives the screw rod 1 7 to rotate. At this time, under the cooperation of the fixed gear 18 and the fixed gear ring 17, the screw rod 2 16 rotates in the opposite direction at the same time, driving the push plate 14 to move rightward on the base 2, thereby pushing the steel structure body 1 to move rightward, realizing the pushing feeding process; Cleaning process: When the push plate 14 pushes the steel structure body 1, the rolling column 21 on the limit plate 20 rotates under the action of friction. At this time, the cleaning plate 24 reciprocates up and down through the cooperation of the reciprocating screw 22 and the reciprocating slide rod 23, thereby achieving effective cleaning of the front and back surfaces of the steel structure body 1.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A steel structure fatigue damage detection device, comprising a steel structure body (1) and a base (2), characterized in that: Two side panels (3) are fixedly mounted on the base (2), and a plurality of cross beams (4) are fixedly mounted between the two side panels (3). Limiting components are mounted on the two side panels (3), and the two limiting components respectively cooperate with the front and rear ends of the steel structure body (1). A detection component is mounted between each two corresponding cross beams (4) at left and right positions, and the two detection components respectively cooperate with the upper and lower ends of the steel structure body (1). A pushing component is mounted on the base (2), and the pushing component cooperates with one of the detection components. Cleaning mechanisms are mounted on the two limiting components, and the two cleaning mechanisms respectively cooperate with the front and rear ends of the steel structure body 1, and the cleaning mechanisms include a cleaning plate (24).

2. A steel structure fatigue damage detection device according to claim 1, characterized in that: A positioning block (19) is fixedly mounted on one end of each of the cross beams (4) close to the steel structure body (1), and each positioning block (19) abuts against the steel structure body (1).

3. A steel structure fatigue damage detection device according to claim 2, characterized in that: The limiting assembly is composed of a receiving groove, a limiting plate (20) and a plurality of compression springs; the receiving groove is provided on a side wall of the side plate (3) at one end close to the steel structure body (1); the limiting plate (20) is slidably mounted in the receiving groove; and the plurality of compression springs are mounted between the receiving groove and the limiting plate (20).

4. A steel structure fatigue damage detection device according to claim 3, characterized in that: The left and right side walls of the accommodating groove are both provided with guide grooves, and the left and right side walls of the limiting plate (20) are both fixedly mounted with guide blocks that are slidably matched with the corresponding guide grooves.

5. A steel structure fatigue damage detection device according to claim 4, characterized in that: A groove is provided on the side wall of one end of the limit plate (20) close to the steel structure body (1), and a rotating shaft is rotatably installed in the groove. A rolling column (21) is fixedly installed on the rotating shaft, and the rolling column (21) is in contact with the side wall of the steel structure body (1).

6. A steel structure fatigue damage detection device according to claim 5, characterized in that: A reciprocating screw (22) is fixedly mounted on one of the rolling columns (21), a lifting groove is provided on the side wall of the limit plate (20), and a reciprocating slide rod (23) threadedly connected to the reciprocating screw (22) is slidably mounted in the lifting groove, a cleaning plate (24) is fixedly mounted on one end of the reciprocating slide rod (23) located outside the limit plate (20), and the cleaning plate (24) cooperates with the steel structure body (1).

7. A steel structure fatigue damage detection device according to claim 6, characterized in that: The detection assembly comprises a mounting frame (5), a servo motor (6), a screw rod one (7), a detection plate (8), and a plurality of pressure sensors (9); the mounting frame (5) is fixedly mounted between two cross beams (4); the servo motor (6) is fixedly mounted on a side wall of the mounting frame (5); the screw rod one (7) is fixedly connected to an output end of the servo motor (6); a connecting block is threadedly connected to the screw rod one (7); the detection plate (8) is fixedly mounted on the connecting block; the plurality of pressure sensors (9) are all mounted on one end of the detection plate (8) close to the steel structure body (1) through a telescopic mechanism; and the plurality of pressure sensors (9) are staggered relative to each other.

8. A steel structure fatigue damage detection device according to claim 7, characterized in that: The telescopic mechanism consists of a telescopic slot, a connecting column (11) and a spring (12); the telescopic slot is formed on a side wall of the detection plate (8); the connecting column (11) is slidably mounted on the telescopic slot, and the connecting column (11) is fixedly connected to the pressure sensor (9); and the spring (12) is mounted between the telescopic slot and the connecting column (11).

9. A steel structure fatigue damage detection device according to claim 8, characterized in that: The pushing assembly comprises a slide groove (13), a support rod (15), a second screw rod (16) and a push plate (14), wherein the slide groove (13) is provided on the base (2), the support rod (15) is slidably mounted in the slide groove (13), the push plate (14) is fixedly mounted on the support rod (15), and the push plate (14) cooperates with the left side of the steel structure body (1), the second screw rod (16) is rotatably mounted on the base (2), and one end of the second screw rod (16) located in the slide groove (13) is threadedly connected to the support rod (15).

10. A steel structure fatigue damage detection device according to claim 9, characterized in that: A fixed gear ring (17) is fixedly mounted on the second screw rod (16), and a fixed gear (18) meshing with the fixed gear ring (17) is fixedly mounted on the first screw rod (7) at the lower end, the tooth spacing of the fixed gear (18) being equal to the tooth spacing of the fixed gear ring (17), and the diameter and number of teeth of the fixed gear (18) are both greater than those of the fixed gear ring (17), and a scanner (10) is fixedly mounted on one end of the detection plate (8) close to the steel structure body (1).

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