A prestress detection device for steel structure processing and a detection method thereof

Abstract

The present application relates to prestress detection technical field, and disclose a kind of for steel structure processing prestress detection device and its detection method, including main part and two entrance plates, two entrance plates are fixedly connected in the top of main part and one end away from each other, two entrance plates are fixedly connected with two sliding strips between, further include tensioning mechanism, tensioning mechanism is set in the top of main part, and tensioning mechanism includes two tensioning box, two tensioning box are slidably connected in the top of main part.The present application applies the thrust of sliding inside the clamping hole to big package clamping frame and small package clamping frame, so that big package clamping frame and small package clamping frame will be tightly clamped to steel pole inserted through the sleeve, increase the clamping point of steel pole, further reduce the phenomenon that steel pole and clamping device move in the process of tensioning due to the not close clamping of clamping device to steel pole, so as to improve the accuracy of prestress detection.

Description

Technical Field

[0001] This invention relates to the field of prestress testing technology, specifically to a prestress testing device and method for steel structure processing. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, and steel trusses made of steel sections and steel plates. Rust removal and prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are used. The components or parts are usually connected by welds, bolts, or rivets. Due to 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, so they generally need to be derusted, galvanized, or painted, and require regular maintenance.

[0003] In prestressing testing, it is common to check whether the tensioning of prestressed steel bars meets the design requirements. This includes the magnitude of the tension force and the holding time. By tensioning the steel rod (prestressed steel bar) and measuring and analyzing the relevant data, the effect of prestressing can be evaluated. In existing technologies, the steel rod (prestressed steel bar) is mostly passed directly through the tensioning testing device, and then clamped by the clamping device. However, after prolonged use, the anti-slip grooves on the clamping device will experience reduced anti-slip effect due to long-term wear. This can lead to the steel rod (prestressed steel bar) shifting during the tensioning process, thus affecting the accuracy of prestressing testing and reducing its practicality. Summary of the Invention

[0004] The purpose of this invention is to provide a prestress testing device and method for steel structure processing, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a prestress testing device and method for steel structure processing, comprising a main body and two inlet plates, both inlet plates being fixedly connected to opposite ends of the top of the main body, and two sliding strips being fixedly connected between the two inlet plates. The device also includes:

[0007] The tensioning mechanism is located on the top of the main body and includes two tensioning boxes. Both tensioning boxes are slidably connected to the top of the main body. Clamping devices are fixedly connected to the inner wall of the two tensioning boxes on the side near the inlet plate. Insertion cylinders are fixedly connected to the outer wall of the two tensioning boxes on the side near the inlet plate. Multiple clamping holes are opened on the outer wall of the insertion cylinders.

[0008] The covering clamping mechanism is located inside the clamping hole. The covering clamping mechanism includes multiple small covering clamping frames, which are slidably connected to multiple clamping holes. A large covering clamping frame is slidably connected to each of the multiple clamping holes. The length of the small covering clamping frames is greater than that of the large covering clamping frames. A long-distance connecting frame is rotatably connected to the side of the small covering clamping frames away from the insertion cylinder. A rotating connecting frame is rotatably connected to the side of the large covering clamping frames away from the insertion cylinder.

[0009] The positioning mechanism is set on the inlet plate and includes multiple sliding rods. The multiple sliding rods are slidably connected to the side of the inlet plate near the tensioning box. The side of the multiple sliding rods away from the sliding rods is fixedly connected to a clamping ring plate. The outer wall of the clamping ring plate has multiple long-distance rotating grooves and multiple short-distance rotating grooves.

[0010] Furthermore, rotating holes are provided at both ends of the outer wall of the inlet plate that are far apart from each other, and an inlet is provided on the side of the inlet plate corresponding to the insertion cylinder. Two sets of sliding grooves are provided on the top of the main body, and the two tensioning boxes are slidably connected to the two sets of sliding grooves respectively.

[0011] Furthermore, the two tensioning boxes are symmetrically distributed around the main body, and both 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, side extension connecting frames are fixedly connected to both the front and back of the tensioning box, and two extension rods are fixedly connected to the sides of the two tensioning boxes that are far apart from each other. Two sets of detection hydraulic cylinders are fixedly connected to the top of the main body, and the output ends of the two sets are fixedly connected to the output ends of each set of detection hydraulic cylinders.

[0013] Furthermore, each of the two upper extension connecting frames is rotatably connected to a detection hydraulic cylinder, and a limit protection frame is rotatably connected between the two upper opening and closing movable frames. Each of the two side extension connecting frames is rotatably connected to a side opening and closing movable frame, and the end of the side opening and closing movable frame away from the side extension connecting frame is rotatably connected to the limit protection frame.

[0014] Furthermore, the covering clamping mechanism also includes multiple opening and closing frames II, which are rotatably connected to the ends of multiple rotating connecting frames away from the large covering clamping frame. The ends of the opening and closing frames II away from the rotating connecting frames are rotatably connected to the opening and closing frame I. The ends of the opening and closing frames I away from the opening and closing frames II are 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. The end of the long-distance connecting frame away from the small covering clamping frame is rotatably connected to the inside of the long-distance rotating groove.

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

[0016] Furthermore, each long-distance rotating groove is distributed between every two short-distance rotating grooves, and multiple limiting frames are fixedly connected to the side of the clamping ring plate away from the sliding rod. The multiple limiting frames are distributed corresponding to the multiple short-distance rotating grooves, and the connection between the opening and closing frame one and the opening and closing frame two is distributed inside the limiting frames.

[0017] A method for detecting prestress in a steel structure fabrication device includes the following steps:

[0018] S1: Pass the steel rod through the inlet plate, the insertion cylinder, and the two tensioning boxes;

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

[0020] S3: The steel rod is then clamped by two clamping devices inside the two tensioning boxes, and a tensioning force is applied to the steel rod passing through the two tensioning boxes;

[0021] S4: Continuously increase the force output by the test hydraulic cylinder until the steel rod being inspected breaks. 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) In this invention, a steel rod passes through an inlet plate, an insertion cylinder, and two tensioning boxes. Two sets of detection hydraulic cylinders apply thrust to two sets of extension rods, thereby pulling the two tensioning boxes to slide relative to each other at the top of the main body. The steel rod is then clamped by two clamping devices inside the two tensioning boxes, applying tension to the steel rod passing through the two tensioning boxes. The force output by the detection hydraulic cylinders is used for detection. Before the clamping devices clamp the steel rod passing through the two tensioning boxes, the detection hydraulic cylinders move the two tensioning boxes away from each other by a certain distance, causing the tensioning boxes to move closer to the clamping ring plate. The long-distance connecting frame is rotatably connected at both ends to the inside of the long-distance rotating groove and the small covering clamping frame, respectively. The rotating connecting frame is rotatably connected to the large covering clamping frame, and the short-distance connecting frame is rotatably connected to the inside of the short-distance rotating groove. This applies a sliding thrust to the large and small covering clamping frames inside the clamping holes, thereby causing the large and small covering clamping frames to provide a covering and clamping grip on the steel rod passing through the insertion cylinder. This increases the number of clamping points on the steel rod and further reduces the phenomenon of the steel rod moving between the clamping device and the clamping device during tensioning due to the clamping device not being tight enough. This improves the accuracy of prestress detection.

[0024] (2) In this invention, when multiple large and small covering clamping frames slide inside multiple clamping holes to clamp the steel rod passing through the insertion cylinder, if the diameter of the steel rod is too large and can pass through the insertion cylinder, the steel rod can be clamped directly by multiple large and small covering clamping frames together. Furthermore, as the force applied by the detection hydraulic cylinder to the tensioning box increases, the clamping force of the small or large covering clamping frames on the steel rod increases, resulting in a tighter clamping of the steel rod, thus improving the tightness of the clamping. Also, when the two tensioning boxes move relative to each other, the upper opening and closing movable frame... Two sets of side-opening movable frames rotate between the limiting protective frame and the upper extension connecting frame, respectively, and limit the maximum gap between the two tensioning boxes. At the same time, when the thrust of the hydraulic cylinder is insufficient, an external hydraulic device can be used to apply tension from the top of the limiting protective frame, so that the opening angle between the two upper opening movable frames and the two sets of side-opening movable frames increases, and a thrust is applied to the two limiting protective frames to move to both sides. Meanwhile, the original gap between the two tensioning boxes can be adjusted through the threaded connection between the threaded adjusting rod and the inlet positioning frame and the rotating connection with the rotating hole, which improves the practicality of the device.

[0025] (3) In this invention, the tension box and the clamping ring plate are brought closer together, causing the short-distance connecting frame to rotate inside the short-distance rotating groove. When the diameter of the steel rod passing through the insertion cylinder is small, the length of the large-covering clamping frame is less than the length of the small-covering clamping frame. After the multiple large-covering clamping frames slide a certain distance inside the multiple clamping holes, the short-distance connecting frame rotates inside the short-distance rotating groove, causing the opening and closing frame one and the opening and closing frame two to leave the inside of the limiting frame. Through the original angle between the opening and closing frame one and the opening and closing frame two and the clamping ring plate and the tension box As the body continues to approach, the opening and closing frame one and the opening and closing frame two will fold together, allowing multiple large covering clamping frames to pause and slide inside multiple clamping holes. The long-distance connecting frame continuously pushes the small covering clamping frames to slide inside the clamping holes, so that multiple small covering clamping frames can clamp and hold the steel rod with a small diameter that passes through the insertion cylinder. This can ensure that multiple small covering clamping frames can cover and hold the steel rod with a small diameter to the greatest extent, thus enabling the device to clamp and hold steel rods of different diameters.

[0026] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

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

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

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

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

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

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

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

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

[0037] The attached diagram lists the components represented by each number as follows:

[0038] In the diagram: 1. Main body; 101. Inlet 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. Limiting and protective frame; 211. Side opening and closing movable frame 3. Covering and 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 covering and clamping frame; 306. Long-distance connecting frame; 307. Small covering and clamping frame; 4. Positioning mechanism; 401. Sliding rod; 402. Clamping ring plate; 403. Inlet positioning frame; 404. Threaded adjusting rod; 405. Long-distance rotating groove; 406. Short-distance rotating groove; 407. Limiting frame. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1, please refer to Figures 1-9 As shown, the present invention is a prestressing detection device and method for steel structure processing, comprising a main body 1 and two inlet plates 101, both inlet plates 101 being fixedly connected to opposite ends of the top of the main body 1, and two sliding strips 104 being fixedly connected between the two inlet plates 101, and further comprising:

[0041] Tensioning mechanism 2 is located on top of main body 1. Tensioning mechanism 2 includes two tensioning boxes 201, both slidably connected to the top of main body 1. Clamping devices 204 are fixedly connected to the inner wall of each tensioning box 201 near the inlet plate 101, and insertion cylinders 205 are fixedly connected to the outer wall of each tensioning box 201 near the inlet plate 101. Multiple clamping holes 206 are provided on the outer wall of the insertion cylinders 205. The two tensioning boxes 201 are symmetrically distributed around main body 1. Both tensioning chambers 201 are slidably connected to the outer walls of the two sliding bars 104. The tensioning mechanism 2 also includes an upper extension connecting frame 202, which is fixedly connected to the top of the tensioning chamber 201. Side extension connecting frames 203 are fixedly connected to the front and back of the tensioning chamber 201. Two extension rods 207 are fixedly connected to the sides of the two tensioning chambers 201 that are far apart from each other. Two sets of detection hydraulic cylinders 208 are fixedly connected to the top of the main body 1. The output ends of the two sets of detection hydraulic cylinders 208 are fixedly connected to the output ends of each set of detection hydraulic cylinders 208. Both upper extension connecting frames 202 are rotatably connected to detection hydraulic cylinders 208. A limit protection frame 210 is rotatably connected between the two upper opening and closing movable frames 209. Both side extension connecting frames 203 are rotatably connected to side opening and closing movable frames 211. The end of the side opening and closing movable frame 211 furthest from the side extension connecting frame 203 is rotatably connected to the limit protection frame 210. The steel rod is passed through the inlet plate 101, the insertion cylinder 205, and the two tensioning boxes 201. The two sets of detection hydraulic cylinders 208 respectively control the two sets of extension rods. 207. A thrust is applied, which can pull the two tensioning boxes 201 to slide relative to each other on the top of the main body 1. The steel rod is then clamped by the two clamping devices 204 inside the two tensioning boxes 201. A tensioning force is applied to the steel rod passing through the two tensioning boxes 201. The force output by the detection hydraulic cylinder 208 is detected. 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 from each other by a certain distance.

[0042] The covering clamping mechanism 3 is disposed inside the clamping hole 206. The covering clamping mechanism 3 includes multiple small covering clamping frames 307, which are slidably connected inside the multiple clamping holes 206. A large covering clamping frame 305 is slidably connected inside each of the multiple clamping holes 206. The length of each small covering clamping frame 307 is greater than that of the large covering clamping frame 305. A long-distance connecting frame 306 is rotatably connected to the side of each small covering clamping frame 307 away from the insertion cylinder 205. A rotating connecting frame 304 is rotatably connected to the side of each large covering clamping frame 305 away from the insertion cylinder 205. The covering clamping mechanism 3 also includes multiple opening and closing frames 303, which are rotatably connected to the ends of the multiple rotating connecting frames 304 away from the large covering clamping frame 305. An opening and closing frame 303 is rotatably connected to the end of the opening and closing frame 303 away from the rotating connecting frame 304. 02. A short-distance connecting frame 301 is rotatably connected to one end of the opening and closing frame 302 away from the second opening and closing frame 303. 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 package clamping frame 307 is rotatably connected to the inside of the long-distance rotating groove 405, causing the tensioning box 201 to move closer to the clamping ring plate 402. 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 clamping frame 307. The rotating connection of the clamping frame 307, the rotating connection of the rotating connecting frame 304 to the large clamping frame 305, and the rotating connection of the short-distance connecting frame 301 to the inside of the short-distance rotating groove 406 apply a sliding thrust to the large clamping frame 305 and the small clamping frame 307 inside the clamping hole 206, thereby causing the large clamping frame 305 and the small clamping frame 307 to clamp the steel rod passing through the insertion cylinder 205 in a covering manner.

[0043] Positioning mechanism 4 is mounted on inlet plate 101. Positioning mechanism 4 includes multiple sliding rods 401, all slidably connected to the side of inlet plate 101 near tension box 201. A clamping ring plate 402 is fixedly connected to the side of the sliding rods 401 away from the sliding rods 401. The outer wall of clamping ring plate 402 has multiple long-distance rotating grooves 405 and multiple short-distance rotating grooves 406. Positioning mechanism 4 also includes an inlet positioning frame 403. 3. Multiple sliding rods 401 are fixedly connected to the side of the clamping annular plate 402 away from the sliding rods 401. Two threaded adjusting rods 404 are rotatably connected inside each of the two rotating holes 102. The multiple sliding rods 401 slide through the inlet plate 101. Each long-distance rotating groove 405 is distributed between every two short-distance rotating grooves 406. Multiple limiting frames 407 are fixedly connected to the side of the clamping annular plate 402 away from the sliding rods 401. The multiple limiting frames 407 are respectively distributed corresponding to the multiple short-distance rotating grooves 406, and the opening / closing frame one 302 and the opening / closing frame two 303... The connections are located inside the limiting frame 407. The original distance between the two tensioning boxes 201 can be adjusted by the threaded connection between the threaded adjusting rod 404 and the inlet positioning frame 403, and the rotatable connection between the threaded adjusting rod 404 and the rotating hole 102. By bringing the tensioning box 201 closer to the clamping ring plate 402, the short-distance connecting frame 301 rotates inside the short-distance rotating groove 406. When the diameter of the steel rod passing through the insertion cylinder 205 is small, the length of the large-covering clamping frame 305 is less than the length of the small-covering clamping frame 307, allowing for multiple large-covering clamps. 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, causing the opening and closing frame one 302 and the opening and closing frame two 303 to leave the inside of the limiting frame 407. Through the original angle between the opening and closing frame one 302 and the opening and closing frame two 303 and the continuous approach of the clamping ring plate 402 and the tensioning box 201, the opening and closing frame one 302 and the opening and closing frame two 303 will fold together, so that the multiple large-covering clamping frames 305 can stop sliding inside the multiple clamping holes 206.

[0044] Rotation holes 102 are provided through both ends of the outer wall of the inlet plate 101 that are far apart from each other. An inlet is provided through one side of the inlet plate 101 that corresponds to the insertion cylinder 205. Two sets of sliding grooves 103 are provided on the top of the main body 1. The two tensioning boxes 201 are slidably connected to the two sets of sliding grooves 103 respectively.

[0045] In use, the steel rod is passed through the inlet plate 101, the insertion cylinder 205, and the two tensioning boxes 201. Two sets of detection hydraulic cylinders 208 apply a pushing force to the two sets of extension rods 207, thereby pulling the two tensioning boxes 201 to slide relative to each other at the top of the main body 1. Then, the steel rod is clamped by two clamping devices 204 inside the two tensioning boxes 201, applying tension force to the steel rod passing through the two tensioning boxes 201. The force output by the detection hydraulic cylinders 208 is used for detection. Before the clamping devices 204 clamp the steel rod passing through the two tensioning boxes 201, the detection hydraulic cylinders 208 will move the two tensioning boxes 201 away from each other by a certain distance, causing the tensioning boxes 201 to move towards the clamping ring plate. 402 approaching, through the rotational connection of the two ends of the long-distance connecting frame 306 to the inside of the long-distance rotating groove 405 and the small covering clamping frame 307 respectively, the rotational connection of the rotating connecting frame 304 to the large covering clamping frame 305, and the rotational connection of the short-distance connecting frame 301 to the inside of the short-distance rotating groove 406, a sliding thrust is applied to the large covering clamping frame 305 and the small covering clamping frame 307 inside the clamping hole 206, thereby causing the large covering clamping frame 305 and the small covering clamping frame 307 to cover and clamp the steel rod passing through the insertion cylinder 205, increasing the clamping points of the steel rod, and further reducing the phenomenon of the steel rod moving between the clamping device 204 and the clamping device 204 during the tensioning process due to the loose clamping of the steel rod by the clamping device 204.

[0046] Example 2, please refer to Figures 1-9 As shown, during use, when multiple large-coverage clamping frames 305 and multiple small-coverage clamping frames 307 slide inside multiple clamping holes 206 to clamp the steel rod passing through the insertion cylinder 205, if the steel rod diameter is too large and can pass through the insertion cylinder 205, it can be clamped directly by multiple large-coverage clamping frames 305 and multiple small-coverage clamping frames 307 together. Furthermore, the greater the force applied by the detection hydraulic cylinder 208 to the tensioning box 201, the greater the clamping force of the small-coverage clamping frames 307 or the large-coverage clamping frames 305 on the steel rod, resulting in a tighter clamping. Also, when the two tensioning boxes 201 move relative to each other, the upper opening and closing movable frame 209 and the two sets of... The side-opening movable frame 211 rotates between the limiting protective frame 210 and the upper extension connecting frame 202, and limits the maximum distance between the two tensioning boxes 201. At the same time, when the thrust of the hydraulic cylinder 208 is insufficient, an external hydraulic device can be used to apply tension from the top of the limiting protective frame 210, so that the opening angle between the two upper opening movable frames 209 and the two sets of side-opening movable frames 211 increases, and a thrust is applied to the two limiting protective frames 210 to move to both sides. At the same time, the original distance between the two tensioning boxes 201 can be adjusted through the threaded connection between the threaded adjusting rod 404 and the inlet positioning frame 403 and the rotational connection with the rotating hole 102.

[0047] By bringing the tension box 201 and the clamping ring plate 402 closer together, the short-distance connecting frame 301 rotates inside the short-distance rotating groove 406. When the diameter of the steel rod passing through the insertion cylinder 205 is small, since the length of the large-covering clamping frame 305 is less than the length of the small-covering clamping frame 307, after the multiple large-covering clamping frames 305 slide a certain distance inside the multiple clamping holes 206, the short-distance connecting frame 301 rotates inside the short-distance rotating groove 406, causing the opening and closing frame one 302 and the opening and closing frame two 303 to leave the interior of the limiting frame 407. The continuous approach of the original angle and the clamping ring plate 402 and the tension box 201 will cause the opening and closing frame 1 302 and the opening and closing frame 2 303 to fold, thereby allowing multiple large covering clamping frames 305 to pause and slide inside multiple clamping holes 206. The long-distance connecting frame 306 continuously pushes the small covering clamping frames 307 to slide inside the clamping holes 206, so that multiple small covering clamping frames 307 can clamp and hold the steel rod with a small diameter that passes through the insertion cylinder 205. This can ensure that multiple small covering clamping frames 307 can cover and hold the steel rod with a small diameter to the maximum extent.

[0048] A method for detecting prestress in a steel structure fabrication device includes the following steps:

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

[0050] S2: Two sets of hydraulic cylinders 208 apply a thrust to the two sets 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: The steel rod is then clamped by 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.

[0052] S4: Continuously increase the force output by the detection hydraulic cylinder 208 until the steel rod being inspected breaks. Record the test results based on the force output by the detection hydraulic cylinder 208.

[0053] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A prestress testing 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 opposite ends of the top of the main body (1), and two sliding strips (104) are fixedly connected between the two inlet plates (101), characterized in that, Also includes: Tensioning mechanism (2), the tensioning mechanism (2) is set on the top of the main body (1), the tensioning mechanism (2) includes two tensioning boxes (201), both tensioning boxes (201) are slidably connected to the top of the main body (1), both tensioning boxes (201) are fixedly connected to a clamping device (204) on the inner wall of the side of the two tensioning boxes (201) near the inlet plate (101), both tensioning boxes (201) are fixedly connected to an insertion cylinder (205) on the outer wall of the side of the two tensioning boxes (201) near the inlet plate (101), and the outer wall of the insertion cylinder (205) is provided with multiple clamping holes (206). A covering clamping mechanism (3) is provided 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 slidably connected inside the plurality of clamping holes (206). A large covering clamping frame (305) is slidably connected inside the plurality of clamping holes (206). The length of the small covering clamping frame (307) is greater than that of the large covering clamping frame (305). A long-distance connecting frame (306) is rotatably connected to the side of the small covering clamping frame (307) away from the insertion cylinder (205). A rotating connecting frame (304) is rotatably connected to the side of the large covering clamping frame (305) away from the insertion cylinder (205). The positioning mechanism (4) is set on the inlet plate (101). The positioning mechanism (4) includes multiple sliding rods (401). The multiple sliding rods (401) are slidably connected to the side of the inlet plate (101) near the tension box (201). The side of the multiple sliding rods (401) away from the sliding rods (401) is fixedly connected to a clamping ring plate (402). The outer wall of the clamping ring plate (402) is provided with multiple long-distance rotating grooves (405) and multiple short-distance rotating grooves (406). The covering clamping mechanism (3) further includes multiple opening and closing frames II (303), which are rotatably connected to the ends of multiple rotating connecting frames (304) away from the large covering clamping frame (305). The ends of the opening and closing frames II (303) away from the rotating connecting frame (304) are rotatably connected to opening and closing frames I (302). The ends of the opening and closing frames I (302) away from the opening and closing frames II (303) are rotatably connected to short-distance connecting frames (301). The short-distance connecting frames (301) are rotatably connected to the inside of the short-distance rotating groove (406). The ends of the long-distance connecting frames (306) away from the small covering clamping frame (307) are rotatably connected to the inside of the long-distance rotating groove (405). Rotating holes (102) are provided through both ends of the outer wall of the inlet plate (101) that are far apart from each other. An inlet is provided through one side of the inlet plate (101) corresponding to the insertion cylinder (205). Two sets of sliding grooves (103) are provided on the top of the main body (1). The two tensioning boxes (201) are slidably connected to the two sets of sliding grooves (103) respectively. The two tensioning boxes (201) are symmetrically distributed around the main body (1). Both 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 tensioning box (201) is fixedly connected to a side extension connecting frame (203) on both the front and back sides. Two extension rods (207) are fixedly connected to the two tensioning boxes (201) on the opposite sides. Two sets of detection hydraulic cylinders (208) are fixedly connected to the top of the main body (1). The two sets of detection hydraulic cylinders (208) apply thrust to the two sets of extension rods (207) respectively.

2. The prestress detection device for steel structure processing according to claim 1, characterized in that: Both of the upper extension connecting frames (202) are rotatably connected to a detection hydraulic cylinder (208), and a limit protection frame (210) is rotatably connected between the two upper opening and closing movable frames (209). Both of the side extension connecting frames (203) are rotatably connected to a side opening and closing movable frame (211), and the 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).

3. The prestress detection device for steel structure processing according to claim 2, characterized in that: The positioning mechanism (4) also includes an inlet positioning frame (403), which is fixedly connected to the side of the plurality of sliding rods (401) away from the clamping ring plate (402). Two threaded adjusting rods (404) are rotatably connected inside the two rotating holes (102), and the plurality of sliding rods (401) slide through the inlet plate (101).

4. The prestress detection device for steel structure processing according to claim 3, characterized in that: Each of the long-distance rotating slots (405) is distributed between every two short-distance rotating slots (406). The side of the clamping ring plate (402) away from the sliding rod (401) is fixedly connected with multiple limiting frames (407). The multiple limiting frames (407) are distributed corresponding to the multiple short-distance rotating slots (406), and the connection between the opening and closing frame one (302) and the opening and closing frame two (303) is distributed inside the limiting frame (407).

5. A prestress testing device for steel structure processing, employing the testing method of the prestress testing device for steel structure processing as described in claim 4, characterized in that: Includes the following steps: S1: Pass the steel rod through the inlet plate (101), the insertion tube (205) and the two tensioning boxes (201); S2: The two sets of hydraulic cylinders (208) apply thrust to the two sets of extension rods (207) respectively, pulling the two tension boxes (201) to slide relative to each other on the top of the main body (1); S3: The steel rod is then clamped by two clamping devices (204) inside the two tensioning boxes (201) to apply a tensioning force to the steel rod passing through the two tensioning boxes (201); S4: Continuously increase the force output by the detection hydraulic cylinder (208) until the steel rod being inspected breaks. Record the test results based on the force output by the detection hydraulic cylinder (208).

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