Deformation detection device and method for steel structure

Abstract

The invention belongs to the technical field of steel structure detection, and particularly relates to a deformation detection device and method for a steel structure. Comprising a supporting block, and a pressure detector and a distance detector are fixedly installed at the bottom of the supporting block; the two distance detecting instruments are located on the two sides of the pressure detecting instrument respectively. A supporting beam is installed on the supporting block in a penetrating mode, abutting mechanisms are installed at the two ends of the supporting beam and used for being fixed to the steel structure in an abutting mode, and rolling wheel mechanisms are rotationally connected to the two opposite sides of the abutting mechanisms and used for moving on the steel structure. The device can quickly move on a steel structure to carry out bending detection, and can also be efficiently and stably fixed to realize pressure deformation detection; according to the invention, the detection device can automatically move on the steel structure, so that different detection points can be rapidly replaced, and the detection efficiency is improved; and meanwhile, the detection accuracy of the pressure detector can be ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structure detection, and particularly relates to a deformation detection device and method for steel structures. Background Art

[0002] Steel structure is a building structure made of steel, which is composed of different steel components and connection methods. Steel has the advantages of high strength, light weight, good earthquake resistance and fast construction speed, so it is used in high-rise buildings, bridges, factories and warehouses, and stadiums. When steel structures are used, they are usually inspected, even on-site, to avoid steel structures with quality problems such as deformation or poor strength that affect safety.

[0003] A Chinese patent with application number 202210444631.7 discloses a steel structure anti-deformation detection device, including an environmental simulation box, which includes an environmental simulation block, an intelligent control display screen is fixedly installed on the front of the environmental simulation block, and an environmental simulation cavity is opened inside the environmental simulation block; by inserting the splicing power part into the docking power part, transmission can be enabled between the docking power part and the splicing power part, and at the same time, the ultrasonic sensor and the wireless transceiver can be connected to the power supply, and the hydraulic parts can be limited by the directional mechanism so that the hydraulic parts are fixed in a specified state, ensuring that the hydraulic parts will not deflect with the steel sample during the detection process, and the accuracy of the detection results is higher. Through the caliber reduction part, the internal cavity of the environmental simulation box can maintain the simulated environment state as much as possible during the replacement of the steel sample, thereby reducing energy leakage, saving energy, and saving time and effort. The effect is more significant, thereby improving the practicality of the steel structure anti-deformation detection device.

[0004] Usually, the deformation detection of steel structures is carried out by placing the detection device in the steel structure. This is not very applicable to the steel structures that have been installed and need to be inspected on site, and it is impossible to detect the installed steel structures. Some devices can be installed and inspected on site, but the installation is cumbersome and too heavy. At the same time, after installing and inspecting a position, if the inspection position needs to be changed, cumbersome manual operations and re-installation are required, which is labor-intensive and inefficient. In addition, how to ensure the accuracy of the detection is also a focus of research. Summary of the invention

[0005] In order to address the deficiencies in the prior art, the present invention provides a deformation detection device for a steel structure. The present invention can not only quickly move on the steel structure for bending detection, but also efficiently and stably fix it to achieve pressure deformation detection, through the cooperation of a pressing mechanism and a roller mechanism. The present invention can enable the detection device to automatically move on the steel structure and quickly change different detection points to improve the detection efficiency through the structural design of the support beam and the cooperation with the pressing mechanism. At the same time, it can also ensure the detection accuracy of the pressure detector.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: A deformation detection device for a steel structure, comprising a support block, a pressure detector and a distance detector are fixedly installed at the bottom of the support block; there are two distance detectors, which are respectively located on both sides of the pressure detector; a support beam is installed through the support block, and both ends of the support beam are installed with a pressing mechanism, the pressing mechanism is used to press and fix on the steel structure, and two opposite sides of the pressing mechanism are rotatably connected with a roller mechanism, and the roller mechanism is used to move on the steel structure; There are two pressing mechanisms, which are symmetrically arranged above and below the steel structure; the pressing mechanism includes a pressing plate, the upper end of which is connected to one end of the support beam; a connecting plate is fixedly provided on one side of the pressing plate, and the connecting plates of the upper and lower pressing mechanisms are fixedly connected by an electric telescopic rod; a group of ear plates are fixedly provided on both opposite sides of the pressing plate, and a roller mechanism is rotatably connected to each group of ear plates.

[0007] Further, the roller mechanism includes a first rotating shaft, a rotating hole is formed through the ear plate, and both ends of the first rotating shaft pass through the corresponding rotating holes; both ends of the first rotating shaft are fixedly provided with limit plates for limiting the first rotating shaft on the corresponding rotating holes; two support plates are fixedly connected to the first rotating shaft, and both ends of the two support plates are fixedly connected to the second rotating shaft, a roller is sleeved on the second rotating shaft, and a pair of first limit rings are fixedly provided on the second rotating shaft for limiting the roller; a torsion spring is sleeved on the first rotating shaft located between the support plate and the adjacent ear plate, and both ends of the torsion spring are fixedly connected to the adjacent ear plate and the support plate respectively; Limiting blocks are fixedly installed on the outer sides of the ends of the two support plates, and the limiting blocks are movably abutted against the two sides of the steel structure.

[0008] Furthermore, when the torsion spring is in a non-stressed state, the angle between the support plate and the pressure plate is an obtuse angle.

[0009] Furthermore, the height of the pressure output end of the pressure detector is higher than the height of the pressure plate.

[0010] Furthermore, there are two support beams, and hinge plates are fixedly provided at both ends of each support beam. The top of the pressure plate located above the steel structure is fixedly connected to two receiving columns, and hinge grooves are provided on the receiving columns; the hinge plates are hinged to the corresponding hinge grooves.

[0011] Furthermore, the support beam includes a rotating rod, a gear ring is fixedly provided in the middle of the rotating rod, threaded ends are provided at both ends of the rotating rod, and threaded tubes are screwed to the threaded ends; the end of the threaded tube away from the rotating rod is a closed end, and the hinged plate is fixed on the closed end.

[0012] Furthermore, two through holes are formed on both sides of the support block, and the rotating rod is located in the corresponding through holes; a pair of second limiting rings are fixed on the rotating rod, and the second limiting rings limit the rotating rod in the through holes; a transmission groove is formed in the middle of the top of the two support blocks, and two gear rings are located in the transmission groove; a transmission mechanism is installed above the transmission groove.

[0013] Furthermore, the transmission mechanism includes a forward and reverse motor, which is fixedly installed on the top of the support block, and the output end of the forward and reverse motor is fixedly connected to a transmission gear, and the transmission gear is meshed with both gear rings; a protective cover is also installed on the top of the support block, and the transmission groove, transmission gear and forward and reverse motor are all located in the protective cover.

[0014] Furthermore, a screw is fixedly provided on one side of the limit block, a threaded opening is opened on the outer side of one end of the support plate, and the screw is threadedly connected with the corresponding threaded opening.

[0015] The present invention also claims a method for detecting using the above deformation detection device, comprising the following steps: S1. When testing the bending of the steel structure, adjust the height of the electric telescopic rod to make the roller mechanism contact the upper and lower parts of the steel structure; then use external force to push the support block horizontally to move the device as a whole; during the movement of the device, the height change is detected by the distance detector to obtain the bending condition of the steel structure; S2. When the steel structure deformation is detected, the upper and lower pressure plates are clamped on the steel structure by adjusting the electric telescopic rod, and then the pressure detector is controlled to make the pressure output end act on the steel structure, and the deformation of the steel structure is obtained through the increasing pressure value and the height change detected by the distance detector; S3. When it is necessary to perform deformation detection on other positions of the steel structure, first keep the two pressure plates at the left end of the support beam in a clamping state on the steel structure; at the same time, by extending the electric telescopic rod at the right end of the support beam, the two pressure plates at the right end of the support beam are released from the clamping of the steel structure. At this time, under the reset of the torsion spring, the roller mechanism resumes the rolling state; then the forward and reverse motors of the transmission mechanism are operated to extend the support beam symmetrically; after extension, the two pressure plates at the right end of the support beam continue to clamp the steel structure through the electric telescopic rod, and at the same time release the clamping state of the two pressure plates at the left end; then, the forward and reverse motors of the transmission mechanism are operated in the opposite direction to shorten the support beam symmetrically, so that the pressure detector reaches the specified position; after reaching the position, the clamping state of the two pressure plates at the left end is restored, and the pressure detector is operated to perform deformation detection.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can not only quickly move on the steel structure for bending detection, but also efficiently and stably fix it to realize pressure deformation detection through the cooperation of the pressing mechanism and the roller mechanism. Specifically, when pressure deformation detection is required, the electric telescopic rods at both ends of the support beam are used to make the two pressing plates approach each other to press the steel structure, thereby realizing fixation. At this time, the pressure detector and the distance detector are used to apply pressure to the steel structure and measure the distance to obtain the deformation of the steel structure. When the bending condition of the steel structure needs to be detected, it is only necessary to adjust the length of the two electric telescopic rods so that the pressing plates are separated from the clamping of the steel structure. At this time, the torsion spring is reset so that the roller of the roller mechanism contacts the steel structure. Therefore, the detection device can realize lateral movement on the steel structure for bending detection through the rolling of the roller under the action of external force, and the roller mechanism will not be separated from the steel structure under the cooperation of the limit block.

[0017] (2) The present invention, through the structural design of the support beam and the cooperation with the pressure mechanism, can not only enable the detection device to automatically move on the steel structure so as to quickly change different detection points and improve the detection efficiency; at the same time, it can also ensure the detection accuracy of the pressure detector; specifically, when it is necessary to perform deformation detection on other positions of the steel structure, firstly, the two pressure plates at the left end of the support beam are kept clamped on the steel structure; at the same time, the electric telescopic rod at the right end of the support beam is extended to release the clamping of the two pressure plates at the right end of the support beam from the steel structure. At this time, under the reset of the torsion spring, the roller mechanism resumes the rolling state; then the forward and reverse motors of the transmission mechanism are operated to extend the support beam symmetrically; after the extension, the two pressure plates at the right end of the support beam continue to clamp the steel structure through the electric telescopic rod, and at the same time, the clamping state of the two pressure plates at the left end is released; Next, the forward and reverse motors of the transmission mechanism run in the opposite direction to shorten the support beam symmetrically and allow the pressure detector to reach the specified position; after reaching the position, the clamping state of the two pressure plates at the left end is restored, and the pressure detector is operated to perform deformation detection, thereby enabling the detection device to automatically move on the steel structure and quickly change different detection points, thereby improving the detection efficiency; at the same time, by having the transmission gears of the forward and reverse motors mesh with both gear rings at the same time, and by having the threaded ends at both ends of the rotating rod be screwed to the threaded tube, the threaded tubes at both ends can be moved synchronously when the forward and reverse motors run forward and reverse, thereby ensuring that the pressure detector is always in the center position. In this way, when the pressure plate is determined as the fulcrum, the pressure detector can apply pressure at the center position, thereby ensuring the balance of torque and further ensuring the accuracy of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a deformation detection device for a steel structure according to the present invention; Figure 2 A schematic diagram of a dispersed structure of a deformation detection device for a steel structure according to the present invention; Figure 3 A partial structural diagram of a deformation detection device for steel structure according to the present invention Figure 1 ; Figure 4 A partial distributed structure diagram of a deformation detection device for steel structure according to the present invention Figure 1 ; Figure 5 A partial structural diagram of a deformation detection device for steel structure according to the present invention Figure 2 ; Figure 6 A partial distributed structure diagram of a deformation detection device for steel structure according to the present invention Figure 2 ; Figure 7 It is a partial structural schematic diagram of a deformation detection device for steel structure of the present invention; Figure 8 A detection schematic diagram of a deformation detection device for a steel structure according to the present invention; Fig. 9 The figure is a moving schematic diagram of a deformation detection device for a steel structure according to the present invention.

[0019] The reference numerals are as follows: Support block 100; transmission groove 110; through hole 120; transmission mechanism 200; protective cover 210; forward and reverse motor 220; transmission gear 230; support beam 300; rotating rod 310; threaded tube 320; hinge plate 330; gear ring 340; second limiting ring 350; threaded end 360; pressing mechanism 400; pressing plate 410; receiving column 420; hinge groove 430; Ear plate-440; rotating hole-441; connecting plate-450; electric telescopic rod-500; roller mechanism-600; first rotating shaft-610; limiting plate-611; supporting plate-620; threaded mouth-621; roller-630; limiting block-640; screw-641; torsion spring-650; second rotating shaft-660; first limiting ring-661; pressure detector-700; distance detector-800; steel structure-900. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0021] Although the steps in the present invention are arranged with numbers, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted. It is understood that the term "and / or" used in this article involves and covers any and all possible combinations of one or more of the associated listed items.

[0022] like Figure 1 to Figure 9 As shown, a deformation detection device for a steel structure comprises a support block 100, a pressure detector 700 and a distance detector 800 are fixedly installed at the bottom of the support block 100; there are two distance detectors 800, which are respectively located on both sides of the pressure detector 700; a support beam 300 is installed through the support block 100, and both ends of the support beam 300 are installed with a pressing mechanism 400, the pressing mechanism 400 is used to press and fix on a steel structure 900, and two opposite sides of the pressing mechanism 400 are rotatably connected with a roller mechanism 600, and the roller mechanism 600 is used to move on the steel structure 900; It is worth noting that the pressure detector 700 and the distance detector 800 of the present application are both existing mature technologies. For example, the pressure detector 700 can be composed of a cylinder or a hydraulic cylinder and a pressure sensor, and the distance detector 800 can be composed of an infrared rangefinder or an ultrasonic rangefinder. The pressure detector 700 is used to apply pressure and monitor the value, and the distance detector 800 is used to detect the height change to obtain the bending or deformation of the steel structure 900, and the value can be read through an external screen device, which will not be described in detail here.

[0023] There are two pressing mechanisms 400, which are symmetrically arranged above and below the steel structure 900; the pressing mechanism 400 includes a pressing plate 410, the upper end of which is connected to one end of the support beam 300; a connecting plate 450 is fixedly provided on one side of the pressing plate 410, and the connecting plates 450 of the upper and lower pressing mechanisms 400 are fixedly connected by an electric telescopic rod 500; a group of ear plates 440 are fixedly provided on both opposite sides of the pressing plate 410, and a roller mechanism 600 is rotatably connected to each group of ear plates 440.

[0024] The present invention can not only quickly move on the steel structure 900 for bending detection, but also efficiently and stably fix it to realize pressure deformation detection through the cooperation of the pressing mechanism 400 and the roller mechanism 600; a detailed description will be given later.

[0025] Further, the roller mechanism 600 includes a first rotating shaft 610, a rotating hole 441 is formed through the ear plate 440, and both ends of the first rotating shaft 610 pass through the corresponding rotating holes 441; both ends of the first rotating shaft 610 are fixedly provided with limiting plates 611 for limiting the first rotating shaft 610 on the corresponding rotating holes 441; two support plates 620 are fixedly connected to the first rotating shaft 610, and both ends of the two support plates 620 are commonly fixedly connected to the second rotating shaft 660, and a roller 630 is sleeved on the second rotating shaft 660, and a pair of first limiting rings 661 are fixedly provided on the second rotating shaft 660 for limiting the roller 630; the first rotating shaft 610 located between the support plate 620 and the adjacent ear plate 440 is sleeved with a torsion spring 650, and both ends of the torsion spring 650 are fixedly connected to the adjacent ear plate 440 and the support plate 620 respectively; Limiting blocks 640 are fixedly installed on the outer sides of the ends of the two support plates 620 , and the limiting blocks 640 are movably abutted against two sides of the steel structure 900 .

[0026] Specifically, when pressure deformation detection is required, the electric telescopic rods 500 at both ends of the support beam 300 are used to bring the two pressure plates 410 closer to each other to press the steel structure 900, thereby achieving fixation. At this time, the pressure detector 700 and the distance detector 800 are used to cooperate to apply pressure to the steel structure 900 and measure the distance to obtain the deformation of the steel structure 900; when the bending of the steel structure 900 needs to be detected, it is only necessary to adjust the length of the two electric telescopic rods 500 to disengage the pressure plate 410 from the clamping of the steel structure 900. At this time, the torsion spring 650 is reset to make the roller 630 of the roller mechanism 600 contact the steel structure 900, so that the detection device can realize lateral movement on the steel structure 900 for bending detection through the rolling of the roller 630 under the action of external force, and the roller mechanism 600 will not be separated from the steel structure 900 under the limit cooperation of the limit block 640.

[0027] It is worth mentioning that the bending detection method is to detect the height between two distance detectors 800 and the steel structure 900, and obtain the bending condition of the steel structure 900 through the change of the height value; if the height value changes by a small amplitude, it means that the bending of the steel structure 900 is not obvious, and if the height value changes by a large amplitude, it means that the bending of the steel structure 900 is obvious, which will not be described in detail here.

[0028] Furthermore, when the torsion spring 650 is in a non-stressed state, the angle between the support plate 620 and the pressure plate 410 is an obtuse angle. With this structural design, the roller mechanism 600 can not only move on the steel structure 900, but also assist the pressure mechanism 400 in fixing when it is needed, further improving the stability during fixing.

[0029] Furthermore, the height of the pressure output end of the pressure detector 700 is higher than the height of the pressing plate 410. The height design of the pressure detector 700 prevents the pressure output end of the pressure detector 700 from directly hitting the steel structure 900 when the pressing mechanism 400 is fixed.

[0030] Furthermore, the support beams 300 are provided with two, and hinge plates 330 are fixedly provided at both ends of each support beam 300. Two receiving columns 420 are fixedly connected to the top of the pressure plate 410 located above the steel structure 900, and hinge grooves 430 are provided on the receiving columns 420; the hinge plates 330 are hinged to the corresponding hinge grooves 430. The support beam 300 can be deflected at a certain angle on the receiving column 420 through the hinged structural design, so as to facilitate the subsequent change of the deformation detection position, which will be described in detail later.

[0031] Furthermore, the support beam 300 includes a rotating rod 310, a gear ring 340 is fixedly provided in the middle of the rotating rod 310, threaded ends 360 are provided at both ends of the rotating rod 310, and the threaded ends 360 are both screwed with threaded tubes 320; the threaded tube 320 and one end away from the rotating rod 310 is a closed end, and the hinge plate 330 is fixed on the closed end.

[0032] Furthermore, two through holes 120 are formed on both sides of the support block 100, and the rotating rod 310 is located in the corresponding through holes 120; a pair of second limiting rings 350 are fixedly provided on the rotating rod 310, and the second limiting rings 350 limit the rotating rod 310 in the through holes 120; a transmission groove 110 is formed in the middle of the top of the two support blocks 100, and two gear rings 340 are located in the transmission groove 110; a transmission mechanism 200 is installed above the transmission groove 110.

[0033] The second limiting ring 350 allows the rotating rod 310 to rotate only in the through hole 120. During the rotation of the rotating rod 310, since the threaded end 360 of the rotating rod 310 is threadedly connected to the threaded tube 320, and under the common limiting of the electric telescopic rod 500 and the limiting block 640, the rotation of the rotating rod 310 can drive the threaded tube 320 to move; the rotation of the rotating rod 310 is controlled by the transmission mechanism 200, which will be described in detail later.

[0034] Furthermore, the transmission mechanism 200 includes a forward and reverse motor 220, which is fixedly mounted on the top of the support block 100, and a transmission gear 230 is fixedly connected to the output end of the forward and reverse motor 220, and the transmission gear 230 is meshed with two gear rings 340; a protective cover 210 is also installed on the top of the support block 100, and the transmission slot 110, the transmission gear 230 and the forward and reverse motor 220 are all located in the protective cover 210. The forward and reverse motor 220 is rotated forward or reversely to drive the gear ring 340 to rotate, thereby realizing the self-rotation of the rotating rod 310, and the forward and reverse motor 220 is protected by the protective cover 210.

[0035] The present invention, through the structural design of the support beam 300 and the cooperation with the pressing mechanism 400, can not only enable the detection device to automatically move on the steel structure 900 so as to quickly change different detection points and improve the detection efficiency; at the same time, it can also ensure the detection accuracy of the pressure detector 700; specifically, when it is necessary to perform deformation detection on other positions of the steel structure 900, firstly, the two pressing plates 410 at the left end of the support beam 300 are kept clamped on the steel structure 900; at the same time, by extending the support beam The electric telescopic rod 500 at the right end of the support beam 300 releases the clamping of the two pressure plates 410 at the right end of the support beam 300 on the steel structure 900. At this time, under the reset of the torsion spring 650, the roller mechanism 600 resumes the rolling state; then the forward and reverse motors 220 of the transmission mechanism 200 are operated to extend the support beam 300 symmetrically; after the extension, the two pressure plates 410 at the right end of the support beam 300 continue to clamp the steel structure through the electric telescopic rod 500, while releasing the clamping of the two pressure plates 410 at the left end. Tight state; then, the forward and reverse motor 220 of the transmission mechanism 200 runs in the opposite direction, so that the support beam 300 is symmetrically shortened, so that the pressure detector 700 reaches the specified position; after reaching the position, the clamping state of the two pressure plates 410 at the left end is restored, and the pressure detector 700 is operated to perform deformation detection, so that the detection device can automatically move on the steel structure 900 to quickly change different detection points, thereby improving the detection efficiency; at the same time, through the transmission gear 230 of the forward and reverse motor 220 simultaneously meshing with the two gear rings 340, and the threaded ends 360 at both ends of the rotating rod 310 are screwed with the threaded tube 320, when the forward and reverse motor 220 runs forward and reverse, the threaded tubes 320 at both ends can be moved synchronously, thereby ensuring that the pressure detector 700 is always in the center position. In this way, when the pressure plate 410 is determined as the fulcrum, the pressure detector 700 can apply pressure at the center position, thereby ensuring the balance of torque, and then ensuring the accuracy of the measurement result.

[0036] It is worth noting that the forward and reverse motor 220 is a prior art, which can rotate forward or reverse, and can be a stepper motor that rotates at a certain angle; at the same time, the forward and reverse motor 220, pressure detector 700, electric telescopic rod 500 and other electrical equipment of the present application are all powered by an external power supply, and can also be remotely controlled through a PLC system, which are all existing conventional technologies and will not be described in detail here.

[0037] Furthermore, a screw rod 641 is fixedly disposed on one side of the limit block 640, and a threaded opening 621 is formed on the outer side of one end of the support plate 620, and the screw rod 641 is threadedly connected with the corresponding threaded opening 621. The relative width can be flexibly adjusted according to the size of the steel structure 900 by threading the screw rod 641 of the limit block 640 with the threaded opening 621, so as to facilitate the limit.

[0038] A method for detecting using the above deformation detection device comprises the following steps: S1. When the bending condition of the steel structure 900 is detected, the height of the electric telescopic rod 500 is adjusted to make the roller mechanism 600 contact the upper and lower parts of the steel structure 900; then the external force pushes the support block 100 laterally to move the device as a whole; during the movement of the device, the height change is detected by the distance detector 800 to obtain the bending condition of the steel structure 900; S2. When the deformation of the steel structure 900 is detected, the upper and lower pressure plates 410 are clamped to the steel structure 900 by adjusting the electric telescopic rod 500, and then the pressure detector 700 is controlled to make the pressure output end act on the steel structure 900, and the deformation of the steel structure 900 is obtained through the increasing pressure value and the height change detected by the distance detector 800; S3. When it is necessary to perform deformation detection on other positions of the steel structure 900, firstly, the two pressure plates 410 at the left end of the support beam 300 are kept clamped on the steel structure 900; at the same time, the electric telescopic rod 500 at the right end of the support beam 300 is extended to release the clamping of the two pressure plates 410 at the right end of the support beam 300 on the steel structure 900. At this time, under the reset of the torsion spring 650, the roller mechanism 600 resumes the rolling state; then the forward and reverse motor 220 of the transmission mechanism 200 is operated to make the support beam 300 is symmetrically extended; after the extension, the two pressure plates 410 at the right end of the support beam 300 continue to clamp the steel structure 900 through the electric telescopic rod 500, and at the same time, the clamping state of the two pressure plates 410 at the left end is released; then, the forward and reverse motors 220 of the transmission mechanism 200 run in the opposite direction, so that the support beam 300 is symmetrically shortened, and the pressure detector 700 reaches the specified position; after reaching the position, the clamping state of the two pressure plates 410 at the left end is restored, and the pressure detector 700 is operated to perform deformation detection.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and changes without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A deformation detection device for a steel structure, characterized in that: The invention comprises a support block (100), wherein a pressure detector (700) and a distance detector (800) are fixedly mounted on the bottom of the support block (100); there are two distance detectors (800), which are respectively located on both sides of the pressure detector (700); a support beam (300) is installed through the support block (100), and both ends of the support beam (300) are installed with a pressing mechanism (400), and the pressing mechanism (400) is used for pressing and fixing on a steel structure (900), and two opposite sides of the pressing mechanism (400) are rotatably connected with roller mechanisms (600), and the roller mechanism (600) is used for moving on the steel structure (900); There are two pressing mechanisms (400) symmetrically arranged above and below the steel structure (900); the pressing mechanism (400) comprises a pressing plate (410), the upper end of which is connected to one end of the support beam (300); a connecting plate (450) is fixedly provided on one side of the pressing plate (410), and the connecting plates (450) of the upper and lower pressing mechanisms (400) are fixedly connected via an electric telescopic rod (500); a group of ear plates (440) are fixedly provided on both opposite sides of the pressing plate (410), and each group of ear plates (440) is rotatably connected to a roller mechanism (600); The roller mechanism (600) comprises a first rotating shaft (610); a rotating hole (441) is formed through the ear plate (440); both ends of the first rotating shaft (610) pass through the corresponding rotating holes (441); limiting plates (611) are fixedly provided at both ends of the first rotating shaft (610) for limiting the first rotating shaft (610) on the corresponding rotating holes (441); two support plates (620) are fixedly connected to the first rotating shaft (610); A second rotating shaft (660) is fixedly connected at both ends, a roller (630) is sleeved on the second rotating shaft (660), and a pair of first limiting rings (661) are fixedly provided on the second rotating shaft (660) for limiting the position of the roller (630); a torsion spring (650) is sleeved on the first rotating shaft (610) located between the support plate (620) and the adjacent ear plate (440), and the two ends of the torsion spring (650) are respectively fixedly connected to the adjacent ear plate (440) and the support plate (620); Limit blocks (640) are fixedly mounted on the outer sides of the ends of the two support plates (620), and the limit blocks (640) are movably abutted against two sides of the steel structure (900).

2. A deformation detection device for a steel structure according to claim 1, characterized in that: When the torsion spring (650) is in a non-stressed state, the angle between the support plate (620) and the pressure plate (410) is an obtuse angle.

3. A deformation detection device for a steel structure according to claim 1, characterized in that: The height of the pressure output end of the pressure detector (700) is higher than the height of the pressure plate (410).

4. A deformation detection device for a steel structure according to claim 1, characterized in that: Two support beams (300) are provided, and hinge plates (330) are fixedly provided at both ends of each support beam (300). Two receiving columns (420) are fixedly connected to the top of the pressure plate (410) located above the steel structure (900), and hinge grooves (430) are provided on the receiving columns (420); the hinge plates (330) are hinged to the corresponding hinge grooves (430).

5. A deformation detection device for a steel structure according to claim 4, characterized in that: The support beam (300) comprises a rotating rod (310), a gear ring (340) is fixedly provided in the middle of the rotating rod (310), threaded ends (360) are provided at both ends of the rotating rod (310), and the threaded ends (360) are both threadedly connected to a threaded tube (320); the end of the threaded tube (320) away from the rotating rod (310) is a closed end, and the hinge plate (330) is fixedly provided on the closed end.

6. A deformation detection device for a steel structure according to claim 5, characterized in that: Two through holes (120) are formed on both sides of the support block (100), and the rotating rod (310) is located in the corresponding through hole (120); a pair of second limiting rings (350) are fixedly provided on the rotating rod (310), and the second limiting rings (350) limit the rotating rod (310) in the through hole (120); a transmission groove (110) is formed in the middle of the top of the two support blocks (100), and two gear rings (340) are located in the transmission groove (110); and a transmission mechanism (200) is installed above the transmission groove (110).

7. A deformation detection device for a steel structure according to claim 6, characterized in that: The transmission mechanism (200) comprises a forward and reverse motor (220), the forward and reverse motor (220) being fixedly mounted on the top of the support block (100), the output end of the forward and reverse motor (220) being fixedly connected to a transmission gear (230), the transmission gear (230) being meshed with two gear rings (340); a protective cover (210) is also mounted on the top of the support block (100), the transmission slot (110), the transmission gear (230) and the forward and reverse motor (220) being all located within the protective cover (210).

8. A deformation detection device for a steel structure according to claim 1, characterized in that: A screw rod (641) is fixedly provided on one side of the limit block (640), a threaded opening (621) is provided on the outer side of one end of the support plate (620), and the screw rod (641) is threadedly connected to the corresponding threaded opening (621).

9. A method for detection using the deformation detection device according to claim 7, characterized in that: The steps include: S1. When detecting the bending condition of the steel structure (900), the height of the electric telescopic rod (500) is adjusted to make the roller mechanism (600) contact the upper and lower parts of the steel structure (900); then, an external force is applied to push the support block (100) laterally to move the device as a whole; during the movement of the device, the height change is detected by the distance detector (800), thereby obtaining the bending condition of the steel structure (900); S2. When the deformation of the steel structure (900) is detected, the electric telescopic rod (500) is adjusted so that the upper and lower pressure plates (410) clamp the steel structure (900), and then the pressure detector (700) is controlled so that the pressure output end acts on the steel structure (900), and the deformation of the steel structure (900) is obtained through the increasing pressure value and the height change detected by the distance detector (800); S3. When deformation detection of other positions of the steel structure (900) is required, the two pressure plates (410) at the left end of the support beam (300) are first kept in a clamping state on the steel structure (900); at the same time, the electric telescopic rod (500) at the right end of the support beam (300) is extended to release the clamping of the two pressure plates (410) at the right end of the support beam (300) on the steel structure (900). At this time, under the reset of the torsion spring (650), the roller mechanism (600) resumes the rolling state; then the forward and reverse motor (220) of the transmission mechanism (200) is operated to make the support beam (300) rotate. The beam (300) is symmetrically extended; after the extension, the two pressure plates (410) at the right end of the support beam (300) continue to clamp the steel structure (900) through the electric telescopic rod (500), and the clamping state of the two pressure plates (410) at the left end is released; then, the forward and reverse motors (220) of the transmission mechanism (200) run in the opposite direction, so that the support beam (300) is symmetrically shortened, so that the pressure detector (700) reaches the specified position; after reaching the position, the clamping state of the two pressure plates (410) at the left end is restored, and the pressure detector (700) is operated to perform deformation detection.

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