Prestress detection device for steel structure processing and detection method thereof

Abstract

The invention relates to the technical field of prestress detection, and discloses a prestress detection device for steel structure machining and a detection method thereof.The prestress detection device comprises a main body and two inlet plates, the two inlet plates are fixedly connected to the ends, away from each other, of the top of the main body, two sliding strips are fixedly connected between the two inlet plates, and the prestress detection device further comprises a tensioning mechanism; the tensioning mechanism is arranged at the top of the main body and comprises two tensioning box bodies, and the two tensioning box bodies are both connected to the top of the main body in a sliding mode. Thrust for sliding in the clamping holes is applied to the large coating clamping frame and the small coating clamping frame, so that the large coating clamping frame and the small coating clamping frame clamp a steel rod penetrating through the insertion cylinder in a coating manner, and the clamping points of the steel rod are increased; the phenomenon that the steel rod and the clamping device move in the tensioning process due to the fact that the steel rod is not tightly clamped by the clamping device is further reduced, and therefore the accuracy of prestress detection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of prestress detection, in particular to a prestress detection device and a detection method thereof for steel structure processing. Background Art

[0002] Steel structure is a structure made of steel materials and is one of the main types of building structures. The structure is mainly composed of components such as steel beams, steel columns and steel trusses made of steel sections and steel plates, and adopts rust removal and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing. The components or parts are usually connected by welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in large factories, stadiums and super high-rise buildings. Steel structures are prone to rust. Generally, steel structures need to be rust-proofed, galvanized or painted, and maintained regularly.

[0003] In prestress detection, it is usually checked whether the tensioning of the prestressed steel bars meets the design requirements, including the size of the tensioning force, the load holding time, etc. By tensioning the steel rods (prestressed steel bars) and measuring and analyzing the relevant data, the effect of the prestressing can be evaluated. In the prior art, most of them directly pass the steel rods (prestressed steel bars) through the tensioning detection device, and then clamp the steel rods (prestressed steel bars) passing through the tensioning detection device through the clamping device on the tensioning detection device. However, after the clamping device has been used for a long time, the anti-slip effect of the anti-slip groove on the clamping device will be reduced due to long-term wear, which will cause the steel rods (prestressed steel bars) to move during the tensioning process of the clamp, thereby affecting the accuracy of the prestressing detection and having low practicality. Summary of the invention

[0004] The object of the present invention is to provide a prestress detection device and a detection method thereof for steel structure processing, so as to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a prestress detection device and a detection method for steel structure processing, comprising a main body and two inlet plates, the two inlet plates are fixedly connected to one end of the top of the main body away from each other, two slide bars are fixedly connected between the two inlet plates, and also includes:

[0007] A tensioning mechanism, the tensioning mechanism is arranged on the top of the main body, and the tensioning mechanism includes two tensioning boxes, both of which are slidably connected to the top of the main body, and the inner walls of the two tensioning boxes on one side close to the inlet plate are fixedly connected with a clamping device, and the outer walls of the two tensioning boxes on one side close to the inlet plate are fixedly connected with an insertion tube, and the outer wall of the insertion tube is provided with a plurality of clamping holes;

[0008] A covering clamping mechanism, the covering clamping mechanism is arranged inside the clamping hole, the covering clamping mechanism includes a plurality of small covering clamping frames, the plurality of small covering clamping frames are respectively slidably connected inside the plurality of clamping holes, a large covering clamping frame is slidably connected inside the plurality of clamping holes, the small covering clamping frame is longer than the large covering clamping frame, a side of the small covering clamping frame away from the insertion tube is rotatably connected to a long-distance connecting frame, and a side of the large covering clamping frame away from the insertion tube is rotatably connected to a rotating connecting frame;

[0009] The positioning mechanism is arranged on the entrance plate, and the positioning mechanism includes a plurality of sliding rods, and the plurality of sliding rods are all slidably connected to a side of the entrance plate close to the tensioning box body, and a tightening circular ring plate is fixedly connected to a side of the plurality of sliding rods away from the sliding rods, and a plurality of long-distance rotation grooves are opened on the outer wall of the tightening circular ring plate, and a plurality of short-distance rotation grooves are opened on the outer wall of the tightening circular ring plate.

[0010] Furthermore, rotation holes are formed at both ends of the outer wall of the entrance plate, which are far away from each other, and an entrance is formed at one side of the entrance plate corresponding to the insertion tube. Two sets of slide grooves are formed on the top of the main body, and the two tensioning boxes are slidably connected to the two sets of slide grooves respectively.

[0011] Furthermore, the two tensioning boxes are symmetrically distributed with the main body as the center, and the two tensioning boxes are slidably connected to the outer walls of the two slide bars. The tensioning mechanism also includes an upper extension connecting frame, which is fixedly connected to the top of the tensioning box.

[0012] Furthermore, the front and back sides of the tensioning box are fixedly connected with side extension connecting frames, the sides of the two tensioning boxes away from each other are fixedly connected with two extension pull rods, the top of the main body is fixedly connected with two groups of detection hydraulic cylinders, and the two groups of output ends are fixedly connected with each group of detection hydraulic cylinder output ends.

[0013] Furthermore, the two upper extending connecting frames are rotatably connected to the inside of the detection hydraulic cylinders, the two upper opening and closing movable frames are rotatably connected to the limit protection frame, the two side extending connecting frames are rotatably connected to the inside of the side opening and closing movable frames, and the end of the side opening and closing movable frame away from the side extending connecting frame is rotatably connected to the limit protection frame.

[0014] Furthermore, the wrapping clamping mechanism also includes a plurality of opening and closing frames 2, which are respectively rotatably connected to one end of the plurality of rotating connecting frames away from the large wrapping clamping frame, one end of the opening and closing frame 2 away from the rotating connecting frame is rotatably connected to the opening and closing frame 1, one end of the opening and closing frame 1 away from the closing frame 2 is rotatably connected to the short-distance connecting frame, the short-distance connecting frame is rotatably connected to the inside of the short-distance rotating groove, and one end of the long-distance connecting frame away from the small wrapping clamping frame is rotatably connected to the inside of the long-distance rotating groove.

[0015] Furthermore, the positioning mechanism also includes an entrance positioning frame, which is fixedly connected to the side of the multiple sliding rods away from the tightening annular plate. Two threaded adjustment rods are rotatably connected inside the two rotating holes, and the multiple sliding rods slide through the entrance plate.

[0016] Furthermore, each long-distance rotation groove is distributed between every two short-distance rotation grooves, and a plurality of limit frames are fixedly connected to the side of the tightening ring plate away from the sliding rod. The plurality of limit frames are respectively distributed corresponding to the plurality of short-distance rotation grooves, and the connection between the opening and closing frame 1 and the opening and closing frame 2 is distributed inside the limit frames.

[0017] A detection method for a prestressed steel structure detection device comprises the following steps:

[0018] S1: Pass the steel rod through the entrance plate, the insertion tube and the two tension boxes;

[0019] S2: Use two groups of detection hydraulic cylinders to apply thrust to the two groups of extension rods respectively, pulling the two tensioning boxes to slide relative to each other on the top of the main body;

[0020] S3: clamping the steel rod through two clamping devices inside the two tensioning boxes, and applying tensioning force to the steel rod passing through the two tensioning boxes;

[0021] S4: Continue to increase the force output by the test hydraulic cylinder until the steel rod under inspection breaks, and record the test results based on the force output by the test hydraulic cylinder.

[0022] The present invention has the following beneficial effects:

[0023] (1) The present invention allows the steel rod to pass through the inlet plate, the insertion tube and the two tensioning boxes, and applies thrust to the two groups of extension rods through two groups of detection hydraulic cylinders, thereby pulling the two tensioning boxes to slide relative to each other on the top of the main body, and then clamps the steel rod through two clamping devices inside the two tensioning boxes, applies tensioning force to the steel rod passing through the two tensioning boxes, and detects it according to the force output by the detection hydraulic cylinder. Before the clamping device clamps the steel rod passing through the two tensioning boxes, the detection hydraulic cylinder drives the two tensioning boxes to slide relatively away for a distance, so that the tensioning boxes are close to the tightening annular plate, and then the tensioning boxes are moved closer to the tightening annular plate. The two ends of the long-distance connecting frame are respectively connected to the inside of the long-distance rotating groove and the small wrapped clamping frame for rotation, the rotating connecting frame is connected to the large wrapped clamping frame for rotation, and the short-distance connecting frame is connected to the inside of the short-distance rotating groove for rotation. A thrust for sliding inside the clamping hole is applied to the large wrapped clamping frame and the small wrapped clamping frame, so that the large wrapped clamping frame and the small wrapped clamping frame can wrap and tighten the steel rod passing through the insertion tube, increase the clamping points of the steel rod, and further reduce the phenomenon of movement between the steel rod and the clamping device during the tensioning process due to the loose clamping of the clamping device on the steel rod, thereby improving the accuracy of prestress detection.

[0024] (2) In the present invention, when the plurality of large wrapped clamping frames and the plurality of small wrapped clamping frames slide in the plurality of clamping holes respectively to clamp the steel rod passing through the insertion tube, when the diameter of the steel rod is too large and can pass through the insertion tube, the steel rod can be clamped directly by the plurality of large wrapped clamping frames and the plurality of small wrapped clamping frames together, and as the force applied by the detection hydraulic cylinder to the tensioning box body increases, the clamping force of the small wrapped clamping frame or the large wrapped clamping frame on the steel rod increases, and the clamping of the steel rod becomes tighter, thereby improving the tightness of the clamping of the steel rod, and when the two tensioning boxes move relative to each other, the upper opening and closing movable frame, The two groups of side opening and closing movable frames rotate between the limit protection frame and the upper extension connecting frame respectively, and the maximum spacing limit is set for the opening and closing distance between the two tensioning boxes. At the same time, when it is detected that the thrust of the hydraulic cylinder is insufficient, a pulling force can be applied from the top of the limit protection frame through an external hydraulic device to increase the opening and closing angles between the two upper opening and closing movable frames and the two groups of side opening and closing movable frames, and a thrust is applied to the two limit protection frames to move toward both sides. At the same time, the original spacing between the two tensioning boxes can be adjusted through the threaded connection of the threaded adjusting rod with the entrance positioning frame and the rotating connection with the rotating hole, thereby improving the practicability of the device.

[0025] (3) The present invention allows the short-distance connecting frame to rotate inside the short-distance rotating groove by bringing the tension box body and the tightening circular ring plate closer together. When the diameter of the steel rod passing through the insertion tube is small, the length of the large covering clamping frame is smaller than the length of the small covering clamping frame. After a plurality of large covering clamping frames slide a certain distance inside a plurality of clamping holes, the short-distance connecting frame can rotate inside the short-distance rotating groove to allow the opening and closing frame 1 and the opening and closing frame 2 to leave the inside of the limiting frame. The original angle between the opening and closing frame 1 and the opening and closing frame 2 and the tightening circular ring plate and the tension box can be adjusted. As the bodies continue to approach, the opening and closing frames one and two will be folded, so that the multiple large covering clamping frames can stop sliding inside the multiple clamping holes, and the small covering clamping frames can be continuously pushed to slide inside the clamping holes through the long-distance connecting frame, so that the multiple small covering clamping frames can tighten and clamp the steel rods with smaller diameters that pass through the insertion tube, and can ensure that the multiple small covering clamping frames can cover and clamp the steel rods with smaller diameters to the greatest extent, so that the device can tighten and clamp steel rods with different diameters.

[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a partial cross-sectional view of the present invention;

[0030] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the tensioning mechanism structure of the present invention;

[0032] Figure 5 It is a schematic diagram of the positioning mechanism structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the coating clamping mechanism of the present invention;

[0034] Figure 7 This is a schematic diagram of the short-distance troughing of the present invention;

[0035] Figure 8 for Figure 3 Enlarged view of point A in the middle;

[0036] Fig. 9 Figure 2 is a diagram of the method of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] In the figure: 1, main body; 101, entrance plate; 102, rotating hole; 103, slide groove; 104, slide bar; 2, tensioning mechanism; 201, tensioning box; 202, upper extension connecting frame; 203, side extension connecting frame; 204, clamping device; 205, insertion cylinder; 206, clamping hole; 207, extension rod; 208, detection hydraulic cylinder; 209, upper opening and closing movable frame; 210, limit protection frame; 211, side opening and closing movable frame ; 3. Envelope clamping mechanism; 301. Short-distance connecting frame; 302. Opening and closing frame one; 303. Opening and closing frame two; 304. Rotating connecting frame; 305. Large enveloping clamping frame; 306. Long-distance connecting frame; 307. Small enveloping clamping frame; 4. Positioning mechanism; 401. Sliding rod; 402. Clamping ring plate; 403. Inlet positioning frame; 404. Threaded adjustment rod; 405. Long-distance rotating groove; 406. Short-distance rotating groove; 407. Limiting frame. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1, please refer to Figure 1-Figure 9 As shown, the present invention is a prestress detection device and a detection method for steel structure processing, comprising a main body 1 and two inlet plates 101, the two inlet plates 101 are fixedly connected to the ends of the top of the main body 1 away from each other, and two slide bars 104 are fixedly connected between the two inlet plates 101, and also include:

[0041] The tensioning mechanism 2 is arranged on the top of the main body 1. The tensioning mechanism 2 includes two tensioning boxes 201. The two tensioning boxes 201 are slidably connected to the top of the main body 1. The inner walls of the two tensioning boxes 201 on one side close to the inlet plate 101 are fixedly connected with a clamping device 204. The outer walls of the two tensioning boxes 201 on one side close to the inlet plate 101 are fixedly connected with an insertion tube 205. The outer wall of the insertion tube 205 is provided with a plurality of clamping holes 206. The two tensioning boxes 201 are symmetrically distributed with the main body 1 as the center. The two tensioning boxes 201 are slidably connected to the outer walls of the two slide bars 104. The tensioning mechanism 2 also includes an upper extension connecting frame 202, which is fixedly connected to the top of the tensioning box 201. The front and back of the tensioning box 201 are fixedly connected to side extension connecting frames 203. The two tensioning boxes 201 are fixedly connected to two extension rods 207 on the sides away from each other. Two groups of detection hydraulic cylinders 208 are fixedly connected to the top of the main body 1. The two output ends of each group of detection hydraulic cylinders 208 are fixedly connected. The two upper extension connecting frames 202 are both rotatably connected with the detection hydraulic cylinder 208, the two upper opening and closing movable frames 209 are rotatably connected with the limited position protection frame 210, the two side extension connecting frames 203 are both rotatably connected with the side opening and closing movable frames 211, and the end of the side opening and closing movable frames 211 away from the side extension connecting frames 203 is rotatably connected with the limited position protection frame 210, and the steel rod is passed through the inlet plate 101, the insertion tube 205 and the two tensioning boxes 201, and the two groups of extension rods are respectively rotatably connected by two groups of detection hydraulic cylinders 208. 207 applies a thrust, thereby pulling the two tensioning boxes 201 to slide relatively on the top of the main body 1, and then the two clamping devices 204 inside the two tensioning boxes 201 clamp the steel rod, apply a tensioning force to the steel rod passing through the two tensioning boxes 201, and detect it according to the force output by the detection hydraulic cylinder 208. Before the clamping device 204 clamps the steel rod passing through the two tensioning boxes 201, the detection hydraulic cylinder 208 drives the two tensioning boxes 201 to slide relatively away for a distance;

[0042] The covering clamping mechanism 3 is arranged inside the clamping hole 206. The covering clamping mechanism 3 includes a plurality of small covering clamping frames 307. The plurality of small covering clamping frames 307 are respectively slidably connected inside the plurality of clamping holes 206. The plurality of clamping holes 206 are all slidably connected with a large covering clamping frame 305. The small covering clamping frames 307 are longer than the large covering clamping frames 305. The side of the small covering clamping frames 307 away from the insertion tube 205 is rotatably connected with a long-distance connecting frame 306. The side of the large covering clamping frame 305 away from the insertion tube 205 is rotatably connected with a rotating connecting frame 304. The covering clamping mechanism 3 also includes a plurality of opening and closing frames 303. The plurality of opening and closing frames 303 are respectively rotatably connected to one end of the plurality of rotating connecting frames 304 away from the large covering clamping frame 305. The end of the opening and closing frame 303 away from the rotating connecting frame 304 is rotatably connected with an opening and closing frame 3 02, the end of the opening and closing frame 1 302 away from the closing frame 2 303 is rotatably connected to the short-distance connecting frame 301, and the short-distance connecting frame 301 is rotatably connected to the inside of the short-distance rotating groove 406, and the end of the long-distance connecting frame 306 away from the small package clamping frame 307 is rotatably connected to the inside of the long-distance rotating groove 405, so that the tension box 201 approaches the tightening circular ring plate 402, and the two ends of the long-distance connecting frame 306 are respectively connected to the inside of the long-distance rotating groove 405 and the small package The rotation connection of the covering clamping frame 307, the rotation connection of the rotating connecting frame 304 and the large covering clamping frame 305, and the rotation connection of the short-distance connecting frame 301 and the inside of the short-distance rotating groove 406 apply a thrust to the large covering clamping frame 305 and the small covering clamping frame 307 to slide inside the clamping hole 206, so that the large covering clamping frame 305 and the small covering clamping frame 307 can cover and tighten the steel rod passing through the insertion tube 205;

[0043] The positioning mechanism 4 is arranged on the entrance plate 101. The positioning mechanism 4 includes a plurality of sliding rods 401. The plurality of sliding rods 401 are all slidably connected to the side of the entrance plate 101 close to the tension box 201. The plurality of sliding rods 401 are fixedly connected to a tightening circular plate 402 on the side away from the sliding rods 401. The outer wall of the tightening circular plate 402 is provided with a plurality of long-distance rotation grooves 405. The outer wall of the tightening circular plate 402 is provided with a plurality of short-distance rotation grooves 406. The positioning mechanism 4 also includes an entrance positioning frame 403. The entrance positioning frame 40 3 is fixedly connected to the side of the multiple sliding rods 401 away from the tightening circular plate 402, and two threaded adjustment rods 404 are rotatably connected inside the two rotating holes 102. The multiple sliding rods 401 slide through the inlet plate 101, and each long-distance rotating groove 405 is distributed between every two short-distance rotating grooves 406. The side of the tightening circular plate 402 away from the sliding rod 401 is fixedly connected to multiple limiting frames 407, and the multiple limiting frames 407 are respectively distributed corresponding to the multiple short-distance rotating grooves 406, and the opening and closing frame 1 302 and the opening and closing frame 2 303 are connected. The connection is distributed inside the limit frame 407. The original distance between the two tensioning boxes 201 can be adjusted by the threaded connection of the threaded adjustment rod 404 and the entrance positioning frame 403 and the rotation connection with the rotation hole 102. The tensioning box 201 and the tightening ring plate 402 are brought closer together to make the short-distance connection frame 301 rotate inside the short-distance rotation groove 406. When the diameter of the steel rod passing through the insertion tube 205 is small, the length of the large sheathing clamping frame 305 is smaller than the length of the small sheathing clamping frame 307, and multiple large sheathing clamping frames can be clamped. After the frame 305 slides a certain distance inside the multiple clamping holes 206, the short-distance connecting frame 301 rotates inside the short-distance rotating groove 406 to make the opening and closing frame 1 302 and the opening and closing frame 2 303 leave the inside of the limiting frame 407. Through the original angle between the opening and closing frame 1 302 and the opening and closing frame 2 303 and the continuous approach of the tightening annular plate 402 and the tensioning box 201, the opening and closing frame 1 302 and the opening and closing frame 2 303 are folded, so that the multiple large covering clamping frames 305 can stop sliding inside the multiple clamping holes 206;

[0044] Rotation holes 102 are penetrated at both ends of the outer wall of the entrance plate 101 that are away from each other, and an entrance is penetrated on the side of the entrance plate 101 corresponding to the insertion tube 205. Two groups of slide grooves 103 are opened on the top of the main body 1, and the two tensioning boxes 201 are slidably connected to the two groups of slide grooves 103 respectively.

[0045] When in use, the steel rod is passed through the inlet plate 101, the insertion tube 205 and the two tensioning boxes 201, and the two groups of detection hydraulic cylinders 208 respectively apply thrust to the two groups of extension rods 207, so that the two tensioning boxes 201 can be pulled to slide relative to each other on the top of the main body 1, and then the steel rod is clamped by the two clamping devices 204 inside the two tensioning boxes 201, and a tensioning force is applied to the steel rod passing through the two tensioning boxes 201, and it is detected according to the force output by the detection hydraulic cylinder 208. Before the clamping device 204 clamps the steel rod passing through the two tensioning boxes 201, the detection hydraulic cylinder 208 will drive the two tensioning boxes 201 to slide relatively away for a distance, so that the tensioning boxes 201 move toward the tightening annular plate 402 is close, and the two ends of the long-distance connecting frame 306 are respectively connected to the inside of the long-distance rotating groove 405 and the small wrapped clamping frame 307 through rotation. The rotating connecting frame 304 is connected to the large wrapped clamping frame 305, and the short-distance connecting frame 301 is connected to the inside of the short-distance rotating groove 406. A thrust is applied to the large wrapped clamping frame 305 and the small wrapped clamping frame 307 to slide inside the clamping hole 206, so that the large wrapped clamping frame 305 and the small wrapped clamping frame 307 can wrap and tighten the steel rod passing through the insertion tube 205, increase the clamping points of the steel rod, and further reduce the phenomenon of the steel rod and the clamping device 204 moving during the tensioning process due to the loose clamping of the clamping device 204 on the steel rod.

[0046] Example 2, please refer to Figure 1-Figure 9 As shown, when in use, when the multiple large coated clamping frames 305 and the multiple small coated clamping frames 307 slide in the multiple clamping holes 206 respectively to tighten and clamp the steel rod passing through the insertion tube 205, when the diameter of the steel rod is too large and can pass through the insertion tube 205, the steel rod can be directly tightened and clamped by the multiple large coated clamping frames 305 and the multiple small coated clamping frames 307 together, and as the force applied by the detection hydraulic cylinder 208 to the tensioning box 201 increases, the clamping force of the small coated clamping frame 307 or the large coated clamping frame 305 on the steel rod increases, and the steel rod is clamped more tightly, and when the two tensioning boxes 201 move relative to each other, the upper opening and closing movable frame 209 and the two groups of The side opening and closing movable frames 211 rotate between the limiting protection frame 210 and the upper extension connection frame 202 respectively, and the maximum spacing limit is set for the opening and closing distance between the two tensioning boxes 201. At the same time, when the thrust of the hydraulic cylinder 208 is detected to be insufficient, a pulling force can be applied from the top of the limiting protection frame 210 through an external hydraulic device to increase the opening and closing angle between the two upper opening and closing movable frames 209 and the two groups of side opening and closing movable frames 211, and a thrust is applied to the two limiting protection frames 210 to move toward both sides. At the same time, the original spacing between the two tensioning boxes 201 can be adjusted through the threaded connection of the threaded adjustment rod 404 with the entrance positioning frame 403 and the rotation connection with the rotation hole 102;

[0047] By drawing the tension box 201 and the tightening annular plate 402 closer together, the short-distance connecting frame 301 is rotated inside the short-distance rotating groove 406. When the diameter of the steel rod passing through the insertion tube 205 is small, the length of the large covering clamping frame 305 is smaller than the length of the small covering clamping frame 307. After the plurality of large covering clamping frames 305 slide a certain distance inside the plurality of clamping holes 206, the short-distance connecting frame 301 is rotated inside the short-distance rotating groove 406 to make the opening and closing frame 1 302 and the opening and closing frame 2 303 leave the interior of the limiting frame 407. The original angle and the tightening annular plate 402 and the tensioning box 201 continue to approach each other, which will cause the opening and closing frame 1 302 and the opening and closing frame 2 303 to fold, so that the multiple large wrapping clamping frames 305 can stop sliding inside the multiple clamping holes 206, and the small wrapping clamping frames 307 can be continuously pushed to slide inside the clamping holes 206 through the long-distance connecting frame 306, so that the multiple small wrapping clamping frames 307 can tighten and clamp the steel rods with smaller diameters that pass through the insertion tube 205, and can ensure to the greatest extent that the multiple small wrapping clamping frames 307 can wrap and clamp the steel rods with smaller diameters to the greatest extent.

[0048] A detection method for a prestressed steel structure detection device comprises the following steps:

[0049] S1: Pass the steel rod through the inlet plate 101, the insertion tube 205 and the two tension boxes 201;

[0050] S2: two groups of detection hydraulic cylinders 208 apply thrust to two groups of extension rods 207 respectively, pulling the two tensioning boxes 201 to slide relative to each other on the top of the main body 1;

[0051] S3: clamping the steel rod through the two clamping devices 204 inside the two tensioning boxes 201, and applying tensioning force to the steel rod passing through the two tensioning boxes 201;

[0052] S4: Continue to increase the force output by the detection hydraulic cylinder 208 until the steel rod under inspection is broken, and record the detection result according to the force output by the detection hydraulic cylinder 208.

[0053] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A prestress detection device for steel structure processing, comprising a main body (1) and two inlet plates (101), wherein the two inlet plates (101) are fixedly connected to one end of the top of the main body (1) away from each other, and two slide bars (104) are fixedly connected between the two inlet plates (101), characterized in that: Also includes: A tensioning mechanism (2), the tensioning mechanism (2) being arranged on the top of the main body (1), the tensioning mechanism (2) comprising two tensioning boxes (201), the two tensioning boxes (201) being slidably connected to the top of the main body (1), the inner walls of the two tensioning boxes (201) on one side close to the inlet plate (101) being fixedly connected to a clamping device (204), the outer walls of the two tensioning boxes (201) on one side close to the inlet plate (101) being fixedly connected to an insertion tube (205), the outer wall of the insertion tube (205) being provided with a plurality of clamping holes (206); A covering clamping mechanism (3), wherein the covering clamping mechanism (3) is arranged inside the clamping hole (206), and the covering clamping mechanism (3) includes a plurality of small covering clamping frames (307), wherein the plurality of small covering clamping frames (307) are respectively slidably connected inside the plurality of clamping holes (206), and the plurality of clamping holes (206) are all slidably connected inside with a large covering clamping frame (305), wherein the small covering clamping frame (307) is longer than the large covering clamping frame (305), and the side of the small covering clamping frame (307) away from the insertion tube (205) is rotatably connected with a long-distance connecting frame (306), and the side of the large covering clamping frame (305) away from the insertion tube (205) is rotatably connected with a rotating connecting frame (304); A positioning mechanism (4), wherein the positioning mechanism (4) is arranged on the entrance plate (101), and the positioning mechanism (4) comprises a plurality of sliding rods (401), wherein the plurality of sliding rods (401) are all slidably connected to a side of the entrance plate (101) close to the tensioning box (201), and a tightening circular ring plate (402) is fixedly connected to a side of the plurality of sliding rods (401) away from the sliding rods (401), and the outer wall of the tightening circular ring plate (402) is provided with a plurality of long-distance rotation grooves (405), and the outer wall of the tightening circular ring plate (402) is provided with a plurality of short-distance rotation grooves (406).

2. A prestress detection device for steel structure processing according to claim 1, characterized in that: The outer wall of the inlet plate (101) is provided with rotation holes (102) at both ends away from each other, and an inlet is provided at one side of the inlet plate (101) corresponding to the insertion tube (205). Two groups of slide grooves (103) are provided at the top of the main body (1), and the two tensioning boxes (201) are respectively slidably connected to the two groups of slide grooves (103).

3. A prestress detection device for steel structure processing according to claim 2, characterized in that: The two tensioning boxes (201) are symmetrically distributed with the main body (1) as the center, and the two tensioning boxes (201) are both slidably connected to the outer walls of the two slide bars (104). The tensioning mechanism (2) also includes an upper extension connecting frame (202), and the upper extension connecting frame (202) is fixedly connected to the top of the tensioning box (201).

4. The prestress detection device for steel structure processing according to claim 3 is characterized in that: The front and back sides of the tensioning box (201) are fixedly connected to side extension connecting frames (203); the sides of the two tensioning boxes (201) that are away from each other are fixedly connected to two extension pull rods (207); the top of the main body (1) is fixedly connected to two groups of detection hydraulic cylinders (208); and the output ends of the two groups are fixedly connected to the output ends of each group of detection hydraulic cylinders (208).

5. A prestress detection device for steel structure processing according to claim 4, characterized in that: The two upper extension connecting frames (202) are both rotatably connected with a detection hydraulic cylinder (208), the two upper opening and closing movable frames (209) are rotatably connected with a limit protection frame (210), the two side extension connecting frames (203) are both rotatably connected with a side opening and closing movable frame (211), and one end of the side opening and closing movable frame (211) away from the side extension connecting frame (203) is rotatably connected to the limit protection frame (210).

6. A prestress detection device for steel structure processing according to claim 5, characterized in that: The wrapping clamping mechanism (3) further comprises a plurality of opening and closing frames (303), wherein the plurality of opening and closing frames (303) are respectively rotatably connected to one end of the plurality of rotating connecting frames (304) away from the large wrapping clamping frame (305); the end of the opening and closing frame (303) away from the rotating connecting frame (304) is rotatably connected to the opening and closing frame (302); the end of the opening and closing frame (302) away from the opening and closing frame (303) is rotatably connected to the short-distance connecting frame (301); the short-distance connecting frame (301) is rotatably connected to the inside of the short-distance rotating groove (406); the end of the long-distance connecting frame (306) away from the small wrapping clamping frame (307) is rotatably connected to the inside of the long-distance rotating groove (405).

7. A prestress detection device for steel structure processing according to claim 6, characterized in that: The positioning mechanism (4) further comprises an entrance positioning frame (403), wherein the entrance positioning frame (403) is fixedly connected to a side of the plurality of sliding rods (401) away from the tightening annular plate (402), and two threaded adjustment rods (404) are rotatably connected inside the two rotating holes (102), and the plurality of sliding rods (401) slide through the entrance plate (101).

8. The prestress detection device for steel structure processing according to claim 7, characterized in that: Each of the long-distance rotating grooves (405) is distributed between every two short-distance rotating grooves (406); a plurality of limiting frames (407) are fixedly connected to one side of the tightening annular plate (402) away from the sliding rod (401); the plurality of limiting frames (407) are respectively distributed corresponding to the plurality of short-distance rotating grooves (406); and the connection between the first opening and closing frame (302) and the second opening and closing frame (303) is distributed inside the limiting frame (407).

9. A prestress detection device for steel structure processing, using the detection method of the prestress detection device for steel structure processing as claimed in claim 8, characterized in that: The following steps are involved: S1: Pass the steel rod through the inlet plate (101), the insertion tube (205) and the two tension boxes (201); S2: applying thrust to the two groups of extension rods (207) respectively through two groups of detection hydraulic cylinders (208), so as to pull the two tensioning boxes (201) to slide relative to each other on the top of the main body (1); S3: clamping the steel rod through two clamping devices (204) inside the two tensioning boxes (201), and applying tensioning force to the steel rod passing through the two tensioning boxes (201); S4: Continue to increase the force output by the detection hydraulic cylinder (208) until the steel rod under inspection is broken, and record the detection result according to the force output by the detection hydraulic cylinder (208).

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