An intensity detection device and detection method for steel structure production

Abstract

The present invention discloses a strength detection device and a detection method for steel structure production, belonging to the technical field of steel structure detection devices. Among them, the strength detection device for steel structure production includes a support frame and an upper chuck and a lower chuck arranged inside the support frame. Through holes penetrating through are provided at the central positions of the upper chuck and the lower chuck. The upper chuck is located above the lower chuck and the upper chuck and the lower chuck are coaxially arranged; by means of the cooperation between the turntable and multiple workpieces, when a workpiece is broken and needs to be taken out, multiple workpieces to be detected will enclose the outside of the broken workpiece, thereby limiting the broken workpiece, enabling the broken workpiece to fall downward along the vertical direction without deflection. After the upper chuck and the lower chuck are both separated from the workpiece, the broken workpiece can be exported through the through hole on the lower chuck.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure detection devices, and particularly relates to a strength detection device and a detection method for steel structure production. Background Art

[0002] Steel structures are commonly used basic components in building construction. After the production of steel structures, it is necessary to conduct spot checks on steel structures of the same batch. Among them, the detection of tensile strength is one of the main means to judge whether the steel structure is qualified.

[0003] Chinese Patent CN207488060U discloses a steel bar strength detection device. When the rack moves downward, it drives the connecting rod to move downward, causing the console to lower. When the rack drops to a certain position, the anti-collision spring is compressed. At this time, if the rack is continued to be shaken downward, the anti-collision spring will have an upward elastic force to prevent the rack from continuing to move downward, enabling the device to reasonably adjust the height of the controller according to the needs of the staff when in use, avoiding resource waste caused by the improper position of the controller that prevents the staff from operating in a timely manner.

[0004] The above device clamps the workpiece through the provided movable clamp to pull the workpiece. However, after the workpiece is broken, it is necessary for the staff to remove the broken workpiece. During the process of removing the workpiece, the staff needs to cooperate with the movable clamp above, which is relatively inconvenient to operate and has certain safety hazards. In summary, there is still room for improvement in the above device.

[0005] Therefore, it is necessary to provide a strength detection device and a detection method for steel structure production to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a strength detection device and a detection method for steel structure production to solve the problem that the existing device clamps the workpiece through the provided movable clamp to pull the workpiece. However, after the workpiece is broken, it is necessary for the staff to remove the broken workpiece. During the process of removing the workpiece, the staff needs to cooperate with the movable clamp above, which is relatively inconvenient to operate as mentioned in the above background art.

[0007] Based on the above ideas, the present invention provides the following technical solution: A strength detection device for steel structure production, including a support frame and an upper chuck and a lower chuck arranged inside the support frame. Through holes are provided through the center positions of the upper chuck and the lower chuck. The upper chuck is located above the lower chuck and is coaxially arranged with the lower chuck. A plurality of limiting components matched with the workpiece are arranged on the lower chuck. A turntable is rotatably installed at the bottom end of the upper chuck. The bottom end of the turntable is a conical surface. When the turntable moves downward, the conical surface on the turntable will squeeze the workpiece, so that the workpiece at the limiting component can move outward along the diameter direction of the lower chuck.

[0008] A limiting cylinder is fixedly installed at the inner top wall of the support frame. The limiting cylinder and the turntable are matched through a positioning component. A notch is provided on the conical surface of the turntable, and the inner top wall of the notch is an inclined extrusion surface. When the turntable moves upward, a plurality of workpieces inserted at the limiting component can move closer to the center position of the lower chuck. As the turntable moves upward, the positioning component can drive the turntable to rotate, so that the extrusion surface on the turntable is aligned with the next workpiece to be tested. When the turntable moves downward, the workpiece to be tested can be driven to move to the center position of the lower chuck through the extrusion surface.

[0009] As a further solution of the present invention: Two upper chucks are provided on the top surface of the upper chuck, and two lower chucks are provided on the bottom surface of the lower chuck. After both ends of the workpiece pass through the through holes on the upper chuck and the lower chuck, the workpiece can be clamped through the upper chuck and the lower chuck.

[0010] As a further solution of the present invention: The limiting component includes a base elastically matched with the lower chuck. A stop piece is fixedly arranged at the middle position of the base. Limiting pieces are slidably assembled at both ends of the base. Both the limiting piece and the stop piece are arc-shaped, and the centers of the limiting piece and the stop piece are on the same straight line.

[0011] As a further solution of the present invention: The positioning component includes a limiting rod fixedly connected with the turntable. A plurality of inclined slots and straight slots are provided on the inner wall of the limiting cylinder. The inclined slots and the straight slots are staggered and distributed in an annular array on the inner wall of the limiting cylinder, and the plurality of straight slots and the plurality of inclined slots are connected end to end. The limiting rod is slidably matched with the straight slots and the inclined slots. The straight slots are vertically distributed. A guide plate is provided at the bottom end of the straight slot. The guide plate is located at the intersection position of the straight slot and the inclined slot. The guide plate is hinged with the limiting cylinder.

[0012] As a further solution of the present invention: a slider is fixedly arranged on the outer side wall of the limiting piece, a sliding groove matched with the slider in sliding is arranged at the inner wall of the base, the cross sections of the slider and the sliding groove are both arranged in a T shape, a fixed block is fixedly arranged on the outer wall of the retaining piece, the fixed block is fixedly arranged in the sliding groove, and an arc-shaped spring is fixedly arranged between the slider and the fixed block.

[0013] As a further solution of the present invention: a plug rod is elastically installed at the bottom end position of the base, a slot matched with the plug rod is arranged at the bottom surface of the slider, a magnetic block is fixedly embedded at the bottom end face of the plug rod, a magnetic ring matched with the magnetic block is fixedly embedded at the center of the top of the lower chuck, and the opposite surfaces of the magnetic ring and the magnetic block have different magnetic poles.

[0014] As a further solution of the present invention: a through hole is arranged at the center of the turntable, and the through hole is communicated with the above-mentioned notch.

[0015] As a further solution of the present invention: a protrusion is fixedly arranged at the position close to the bottom end on the inner wall of the lower chuck.

[0016] As a further solution of the present invention: a sliding rod is fixedly arranged on the outer side wall of the base, the sliding rod passes through the base and is in sliding fit with the base, and a retaining disc is fixedly arranged at one end of the sliding rod passing through the base, a limiting spring is sleeved on the outer side of the sliding rod, and the two ends of the limiting spring are respectively fixedly connected with the retaining disc and the outer wall of the base.

[0017] A method for detecting by using the above-mentioned strength detection device for steel structure production includes the following steps: inserting the workpiece at the limiting component on the lower chuck; driving the upper chuck to move downward, and pushing the workpiece to be detected to the center position of the lower chuck through the extrusion surface on the turntable; when the detection is completed and the upper chuck is driven to move upward, multiple undetected workpieces can move closer to the center position of the lower chuck, so as to limit the broken workpiece.

[0018] Compared with the prior art, the beneficial effects of the present invention are: this device is matched with multiple workpieces through the arranged turntable. When the workpiece is broken and needs to be taken out, multiple workpieces to be detected will enclose the broken workpiece on the outside, so as to limit the broken workpiece, so that the broken workpiece can fall downward along the vertical direction without deflection. After the upper chuck and the lower chuck are both separated from the workpiece, the broken workpiece can be exported through the through hole on the lower chuck. Through this structure, it is beneficial to install and position the workpiece, and the workpiece can be taken out quickly and stably after the test is completed. During the whole operation process, only the upper chuck needs to be moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments:

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the schematic diagram of the lower chuck and the convex structure of the present invention;

[0022] Figure 3 is the schematic diagram of the limiting component structure of the present invention;

[0023] Figure 4 is the schematic diagram of the extrusion surface and the perforation structure of the present invention;

[0024] Figure 5 is the cross-sectional view of the turntable and the upper chuck of the present invention;

[0025] Figure 6 is the schematic diagram of the connection structure between the limiting piece and the base of the present invention;

[0026] Figure 7 is the schematic diagram of the positioning groove structure of the present invention;

[0027] Figure 8 is the present invention Figure 7 the enlarged structural schematic diagram at position A;

[0028] Figure 9 is the schematic diagram of the slider structure of the present invention;

[0029] Figure 10 is the present invention Figure 9 the enlarged structural schematic diagram at position B;

[0030] Figure 11 is the schematic diagram of the inclined groove and the straight groove structure of the present invention;

[0031] Figure 12 is the present invention Figure 11 the enlarged structural schematic diagram at position C;

[0032] Figure 13 is the workpiece distribution diagram of the present invention;

[0033] Figure 14 is the schematic diagram of the workpiece distribution during the detection process of the present invention.

[0034] In the figure: 1, support frame; 2, limiting cylinder; 201, inclined groove; 202, straight groove; 3, lifting hydraulic rod; 4, workpiece; 5, sliding rod; 6, base; 7, lower chuck; 701, positioning groove; 8, retaining piece; 801, fixing block; 9, limiting piece; 901, slider; 9011, slot; 902, positioning post; 10, turntable; 1001, limiting rod; 1002, extrusion surface; 1003, perforation; 11, lower clamping head; 1101, protrusion; 12, upper clamping head; 13, upper chuck; 14, magnetic ring; 15, insertion rod; 16, baffle; 17, guide plate. Specific implementation mode

[0035] As Figures 1-6 shown, a strength detection device and detection method for steel structure production include a support frame 1 and an upper chuck 13 and a lower chuck 7 arranged inside the support frame 1. The upper chuck 13 is located above the lower chuck 7, and the upper chuck 13 and the lower chuck 7 are coaxially arranged. Referring to Figures 1-3 shown, a plurality of limiting components matched with the workpiece 4 are arranged on the lower chuck 7, and the limiting components can move relative to the lower chuck 7 along its diameter direction. Through holes penetrating through are provided at the central positions of both the upper chuck 13 and the lower chuck 7 to facilitate both ends of the workpiece 4 to pass through the upper chuck 13 and the lower chuck 7;

[0036] Furthermore, two upper clamping heads 12 are symmetrically arranged on the top surface of the upper chuck 13, and two lower clamping heads 11 are symmetrically arranged on the bottom surface of the lower chuck 7. During actual use, when both ends of the workpiece 4 pass through the through holes on the upper chuck 13 and the lower chuck 7, the workpiece 4 can be clamped by the upper clamping heads 12 and the lower clamping heads 11. After that, as the upper chuck 13 gradually moves upward and away from the lower chuck 7, the workpiece 4 can be pulled;

[0037] A turntable 10 is rotatably installed on the bottom end face of the upper chuck 13. The bottom end of the turntable 10 is a conical surface. During actual use, the workpiece 4 is inserted at the limiting component. When the turntable 10 moves downward in the vertical direction, the inclined conical surface on the turntable 10 will extrude the workpiece 4, so that the workpiece 4 at the limiting component can move outward along the diameter direction of the lower chuck 7. A limiting cylinder 2 is fixedly installed on the inner top wall of the support frame 1 through bolts, and the limiting cylinder 2 and the turntable 10 are matched through a positioning component. Specifically, a notch is provided at the conical surface of the turntable 10, and the inner top wall of the notch is an inclined extrusion surface 1002. Specifically refer to Figures 4-5As shown, the side of the extrusion surface 1002 away from the axis of the turntable 10 is lower than the side of the extrusion surface 1002 close to the axis of the turntable 10. With this structure, when the turntable 10 moves upward, multiple workpieces 4 inserted into the limiting component can move closer to the center position of the lower chuck 7, which is beneficial for limiting the broken workpiece 4, enabling the broken workpiece 4 to smoothly pass through the through hole on the lower chuck 7 and be exported. During the process of the turntable 10 moving upward with the upper chuck 13, the positioning component can drive the turntable 10 to rotate, so that the extrusion surface 1002 on the turntable 10 is aligned with the next workpiece 4 to be tested. When the turntable 10 moves downward, the extrusion surface 1002 can drive the workpiece 4 to be tested to move to the center position of the lower chuck 7, facilitating the connection of both ends of the workpiece 4 to be detected with the upper chuck 12 and the lower chuck 11 respectively.

[0038] Refer to Figures 2-7 、 Figures 11-14 As shown, the above-mentioned limiting component includes a base 6 elastically cooperating with the lower chuck 7. A baffle 8 is fixedly arranged at the middle position of the base 6, and limiting pieces 9 are elastically installed at both ends of the base 6. Both the limiting piece 9 and the baffle 8 are arc-shaped, and the centers of the limiting piece 9 and the baffle 8 are on the same straight line. Refer to Figure 3 , the range enclosed by the limiting piece 9 and the baffle 8 exceeds 180°. With this structure, when the columnar workpiece 4 is inserted between the limiting piece 9 and the baffle 8, the workpiece 4 cannot move horizontally relative to the limiting piece 9 and the baffle 8.

[0039] The above-mentioned positioning component includes a limiting rod 1001 fixedly connected to the turntable 10. The limiting rod 1001 is arranged on the outer peripheral wall of the turntable 10 and close to the top position. A plurality of inclined grooves 201 and straight grooves 202 are formed on the inner wall of the limiting cylinder 2. The inclined grooves 201 and the straight grooves 202 are staggered and distributed in an annular array on the inner wall of the limiting cylinder 2, and the plurality of straight grooves 202 and the plurality of inclined grooves 201 are connected end to end, so that the above-mentioned limiting rod 1001 can slide in the straight grooves 202 and the inclined grooves 201. The straight grooves 202 are vertically distributed. With this structure, when the upper chuck 13 drives the turntable 10 to move upward, the limiting rod 1001 can move upward along the inclined groove 201. During this process, the turntable 10 will rotate, so that the extrusion surface 1002 on the turntable 10 is aligned with the next workpiece 4 to be tested in the vertical direction;

[0040] Furthermore, a guide plate 17 is arranged at the bottom end of the straight groove 202. The guide plate 17 is located at the intersection position of the straight groove 202 and the inclined groove 201. Refer to Figures 11-12As shown, the guide plate 17 is hinged to the limit cylinder 2, and the hinged position is between the top wall of the inclined slot 201 and the bottom surface of the guide plate 17. With this structure, when the guide plate 17 is in a state approximately parallel to the inclined slot 201, the guide plate 17 can only deflect downward relative to the straight slot 202. With this structure, when the limit rod 1001 moves downward along the straight slot 202 and is placed at the intersection position of the inclined slot 201 and the straight slot 202, as the turntable 10 moves upward relative to the limit cylinder 2, the limit rod 1001 can slide along the guide plate 17 into the inclined slot 201.

[0041] In actual use, a plurality of workpieces 4 to be detected are inserted between the baffle 8 and the limit piece 9. Since the range enclosed by the baffle 8 and the limit piece 9 matches the cylindrical workpiece 4, the workpiece 4 can be stably inserted between the baffle 8 and the limit piece 9. And in the initial state, a workpiece 4 is clamped between the upper chuck 13 and the lower chuck 7. By driving the upper chuck 13 to move upward, the pulling force on the workpiece 4 gradually increases. When the workpiece 4 is broken, the tensile test of the workpiece 4 is completed. At this time, continue to drive the upper chuck 13 and the turntable 10 to move upward. During this process, the limit rod 1001 will move upward along the inclined slot 201. The extrusion of the inclined slot 201 on the limit rod 1001 can drive the turntable 10 to deflect. Specifically, when the limit rod 1001 slides upward to the intersection of the straight slot 202 and the inclined slot 201, the turntable 10 stops rotating. At this time, the notch on the turntable 10 will be aligned with the next workpiece 4 to be detected. Since the bottom end of the turntable 10 is an inclined conical surface, as the turntable 10 moves upward, a plurality of workpieces 4 inserted between the limit piece 9 and the baffle 8 will move closer to the center of the lower chuck 7. At this time, the plurality of workpieces 4 inserted between the baffle 8 and the limit piece 9 can limit the broken workpiece 4. When the upper chuck 12 and the lower chuck 11 leave the workpiece 4, the broken workpiece 4 can fall vertically without deflection, which is conducive to the broken workpiece 4 passing through the through hole on the lower chuck 7 and being exported. Specifically, it can be referred to Figure 13 as shown, Figure 13 Among them, the outer workpiece 4 is the workpiece 4 inserted between the baffle 8 and the limit piece 9, and the central one is the broken workpiece 4;

[0042] After that, it can drive the upper chuck 13 and the turntable 10 to move downward. Since the notch on the turntable 10 is already aligned with the next workpiece 4 to be detected, as the turntable 10 moves downward, the pressure on the workpiece 4 through the extrusion surface 1002 can drive the workpiece 4 to move towards the position closer to the center of the lower chuck 7. When the workpiece 4 is aligned with the through hole on the lower chuck 7, the workpiece 4 can fall to the lower jaw 11. At the same time, as the turntable 10 moves downward, the extrusion of the workpiece 4 by the conical surface at the bottom end of the turntable 10 can cause multiple workpieces 4 to spread outwards, which is beneficial for the staff to observe the workpiece 4 being detected. In addition, as the turntable 10 moves downward, the limiting rod 1001 on the turntable 10 will also move downward along the straight groove 202 and pass through the guide plate 17. Since the guide plate 17 can only move downward unidirectionally relative to the straight groove 202, when the turntable 10 moves upward next time, the limiting rod 1001 can slide along the guide plate 17 into the inclined groove 201, which is beneficial for the next use.

[0043] In summary, this device cooperates with the turntable 10 and multiple workpieces 4. When the workpiece 4 is broken and needs to be taken out, multiple workpieces 4 to be detected will enclose the broken workpiece 4 on the outside, so as to limit the broken workpiece 4, so that the broken workpiece 4 can fall downward along the vertical direction without deflection. After the upper jaw 12 and the lower jaw 11 are both separated from the workpiece 4, the broken workpiece 4 can be exported through the through hole on the lower chuck 7. Through this structure, it is beneficial to install and position the workpiece 4, and the workpiece 4 can be taken out quickly and stably after the test is completed. During the overall operation process, only the upper chuck 13 needs to be moved.

[0044] Refer to Figure 3 、 Figure 6 As shown, a slider 901 is fixedly arranged on the outer wall of the limiting piece 9, and a sliding groove that is slidably matched with the slider 901 is opened at the inner wall of the base 6. The cross-sections of the slider 901 and the sliding groove are both arranged in a T shape. A fixing block 801 is fixedly arranged on the outer wall of the baffle 8. The fixing block 801 is located in the sliding groove, and the fixing block 801 is fixedly connected to the base 6 by bolts. An arc-shaped spring is fixedly arranged between the slider 901 and the fixing block 801;

[0045] Furthermore, refer to Figure 9 、 Figure 10 As shown, a plug rod 15 is elastically installed at the bottom end of the base 6, and a slot 9011 that is matched with the plug rod 15 is opened on the bottom surface of the slider 901. A magnetic block is fixedly embedded at the bottom end face of the plug rod 15. Refer to Figure 3As shown, a magnetic ring 14 that cooperates with the magnetic block is fixedly embedded at the center of the top of the lower chuck 7. The inner diameter of the magnetic ring 14 is equal to the inner diameter of the through hole on the lower chuck 7, and the surface of the magnetic ring 14 opposite to the magnetic block has different magnetic poles. In actual use, when the workpiece 4 is driven to move to the position of the through hole of the lower chuck 7 by the extrusion surface 1002, the insertion rod 15 on the base 6 can be aligned with the magnetic ring 14 on the lower chuck 7. Thus, the suction force of the magnetic ring 14 on the magnetic block can drive the insertion rod 15 to move downward, so that the top end of the insertion rod 15 is separated from the slot 9011. At this time, the limiting piece 9 will rotate relative to the base 6 in the direction close to the stop piece 8, so that the wrapping range of the limiting piece 9 and the stop piece 8 on the workpiece 4 is less than 180°. At this time, the base 6 can drive the stop piece 8 and the limiting piece 9 to move away from the workpiece 4 and reset, which is convenient for the next use and can also avoid the interference between the broken workpiece 4 and the base 6 when it falls.

[0046] As a further optimization of the above solution, referring to Figures 7-9 As shown, a positioning post 902 is elastically installed on one side of the bottom surface of the limiting piece 9 in this solution. Specifically, an installation hole that slidably cooperates with the positioning post 902 is provided on the bottom surface of the limiting piece 9, and a spring is fixedly arranged between the inner end surface of the installation hole and the positioning post 902. Through this structure, the elastic cooperation between the positioning post 902 and the limiting piece 9 can be realized. A plurality of installation grooves are evenly provided on the top surface of the lower chuck 7, and the above-mentioned base 6 is slidably arranged in the installation grooves, and a positioning groove 701 that cooperates with the positioning post 902 is provided on the bottom surface of the installation groove. The bottom surface of the positioning groove 701 is inclined. Specifically, the side of the positioning groove 701 away from the magnetic ring 14 is lower than the side of the positioning groove 701 close to the magnetic ring 14. Through this structure, during the process of the base 6 approaching the magnetic ring 14, the positioning post 902 can be received into the limiting piece 9 and moved out of the positioning groove 701 under the extrusion of the bottom surface of the positioning groove 701. When the workpiece 4 is pushed to the through hole of the lower chuck 7, the limiting piece 9 on the base 6 will gradually approach the stop piece 8, which is beneficial to the reset of the base 6. During the reset process of the base 6, the positioning post 902 on the limiting piece 9 will re-enter the positioning groove 701 and contact the side of the positioning groove 701 away from the magnetic ring 14. At this time, the side of the positioning groove 701 away from the magnetic ring 14 can limit the positioning post 902 to prevent the positioning post 902 from continuing to move with the base 6. Therefore, when the base 6 continues to reset, the limiting piece 9 will deflect relative to the base 6 in the direction of the end of the base 6. When the slot 9011 on the limiting piece 9 is aligned with the insertion rod 15 again, the insertion rod 15 will pop out and re-insert into the slot 9011, so that the limiting piece 9 can be locked again by the insertion rod 15, which is beneficial to the next use.

[0047] As Figure 1As shown, the lower chuck 7 is fixedly installed on the ground through support columns. A lifting hydraulic rod 3 is fixedly installed at the top of the support frame 1. The telescopic end of the lifting hydraulic rod 3 passes through the support frame 1 and is fixedly connected to the upper chuck 13. Moreover, the telescopic end of the lifting hydraulic rod 3 can slide relative to the support frame 1. This structure is conducive to driving the upper chuck 13 to move in the vertical direction.

[0048] Referring to Figure 2 As shown, a through hole 1003 is formed at the center of the turntable 10, and the through hole 1003 is communicated with the above-mentioned notch. Through this structure, the extrusion surface 1002 can push the workpiece 4 to the center position of the turntable 10. And when the turntable 10 moves downward, the top end of the workpiece 4 can pass through the through hole 1003 and the upper chuck 13 and cooperate with the upper clamping head 12.

[0049] In actual use, the turntable 10 and the upper chuck 13 can be rotatably connected through a bearing.

[0050] Referring again to Figure 2 As shown, a protrusion 1101 is fixedly arranged on the inner wall of the lower clamping head 11 near the bottom end. Through this structure, when the workpiece 4 is pushed by the extrusion surface 1002 to the through hole position of the lower chuck 7, the workpiece 4 can fall onto the protrusion 1101 through the through hole. Therefore, the workpiece 4 can be supported by the protrusion 1101. After that, when the lower clamping head 11 approaches, the workpiece 4 can be clamped.

[0051] Referring to Figures 2-3 As shown, hydraulic rods are arranged on the outer sides of both the upper clamping head 12 and the lower clamping head 11. Specifically, the two hydraulic rods are fixedly connected to the upper chuck 13 and the lower chuck 7 respectively. The telescopic end of the hydraulic rod at the upper chuck 13 is fixedly connected to the upper clamping head 12, and the telescopic end of the hydraulic rod at the lower chuck 7 is fixedly connected to the lower clamping head 11.

[0052] A sliding rod 5 is fixedly arranged on the outer wall of the base 6. The sliding rod 5 passes through the base 6 and is in sliding fit with it. And a stop disk is fixedly arranged at one end of the sliding rod 5 passing through the base 6. A limiting spring is sleeved on the outer side of the sliding rod 5. The two ends of the limiting spring are fixedly connected to the stop disk and the outer wall of the base 6 respectively. This structure is conducive to driving the base 6 to reset.

[0053] Referring to Figure 10 As shown, a through groove for sliding fit with the insertion rod 15 is formed on the base 6. A retaining ring is fixedly arranged at a position near the bottom end inside the through groove. A first spring is fixedly arranged between the retaining ring and the insertion rod 15.

[0054] Referring to Figure 11As shown, in actual use, a baffle 16 can also be provided at the top position of the straight groove 202. The baffle 16 is located at the junction of the straight groove 202 and the inclined groove 201. The baffle 16 is hinged to the limiting cylinder 2, and the hinged position is on the side of the baffle 16 parallel to the straight groove 202. Combining Figures 11-12 As shown, a second spring is fixedly provided between the baffle 16 and the bottom wall of the inclined groove 201 and between the guide plate 17 and the side wall of the straight groove 202. With this structure, it is beneficial to realize the elastic cooperation between the baffle 16 and the guide plate 17 and the limiting cylinder 2. After the limiting rod 1001 passes over the guide plate 17, it can only move upward along the inclined groove 201. In addition, after the limiting rod 1001 passes over the baffle 16, it can only move downward along the straight groove 202.

[0055] Referring to Figures 13-14 As shown, in actual use, when the turntable 10 rotates, it can intermittently grasp the workpiece 4 on the lower chuck 7. Specifically, Figure 13 In Figure 14 As shown, one workpiece 4 at the periphery is pushed by the pressing surface 1002 to the center of the lower chuck 7. When the turntable 10 rotates driven by the cooperation of the limiting rod 1001 and the inclined groove 201, the pressing surface 1002 on the turntable 10 will pass over the adjacent workpiece 4 and cooperate with the next workpiece 4. Specifically referring to As shown in this way, the remaining workpieces 4 can limit the broken workpiece 4 after approaching the center of the lower chuck 7, so that the broken workpiece 4 can fall more stably.

Claims

1. A strength detection device for steel structure production, comprising a support frame and an upper chuck and a lower chuck arranged inside the support frame, wherein a through hole is provided at the center of the upper chuck and the lower chuck, the upper chuck is located above the lower chuck, and the upper chuck and the lower chuck are coaxially arranged, characterized in that: The lower chuck is provided with a plurality of groups of limit assemblies matched with the workpiece, and a turntable is rotatably mounted on the bottom end of the upper chuck, and the bottom end of the turntable is a conical surface. When the turntable moves downward, the conical surface on the turntable will squeeze the workpiece, so that the workpiece at the limit assemblies can move outward along the diameter direction of the lower chuck; A limiting cylinder is fixedly installed on the inner top wall of the support frame, and the limiting cylinder and the turntable are matched through a positioning assembly. A notch is provided on the conical surface of the turntable, and the inner top wall of the notch is an inclined extrusion surface. When the turntable moves upward, a plurality of workpieces inserted at the limiting assembly can be brought close to the center position of the lower chuck. As the turntable moves upward, the positioning assembly can drive the turntable to rotate so that the extrusion surface on the turntable is aligned with the next workpiece to be tested. When the turntable moves downward, the extrusion surface can drive the workpiece to be tested to move to the center position of the lower chuck.

2. A strength detection device for steel structure production according to claim 1, characterized in that: The top surface of the upper chuck is provided with two upper chucks, and the bottom surface of the lower chuck is provided with two lower chucks. When the two ends of the workpiece pass through the through holes on the upper chuck and the lower chuck, the workpiece can be clamped by the upper chuck and the lower chuck.

3. A strength detection device for steel structure production according to claim 2, characterized in that: The limiting assembly includes a base that elastically cooperates with the lower chuck, a baffle is fixedly arranged at the middle position of the base, and limiting plates are slidably assembled at positions at both ends of the base. The limiting plate and the baffle are both arranged in an arc shape, and the centers of the limiting plate and the baffle are on the same straight line.

4. A strength detection device for steel structure production according to claim 3, characterized in that: The positioning assembly includes a limiting rod fixedly connected to the turntable, and a plurality of oblique grooves and straight grooves are provided on the inner wall of the limiting cylinder. The oblique grooves and the straight grooves are staggered and distributed in a circular array on the inner wall of the limiting cylinder, and a plurality of straight grooves are connected end to end with a plurality of oblique grooves. The limiting rod slides with the straight grooves and the oblique grooves, and the straight grooves are distributed vertically. A guide plate is provided at the bottom end of the straight groove, and the guide plate is located at the intersection of the straight groove and the oblique groove, and the guide plate is hinged to the limiting cylinder.

5. A strength detection device for steel structure production according to claim 4, characterized in that: A slider is fixedly provided on the outer wall of the limiting plate, a sliding groove slidably matched with the slider is opened on the inner wall of the base, the cross-sections of the slider and the sliding groove are both set to be T-shaped, a fixed block is fixedly provided on the outer wall of the baffle, the fixed block is fixedly provided in the sliding groove, and an arc spring is fixedly provided between the slider and the fixed block.

6. A strength detection device for steel structure production according to claim 5, characterized in that: A plug rod is elastically installed at the bottom end of the base, a slot matching the plug rod is opened on the bottom surface of the slider, a magnetic block is fixedly embedded on the bottom end surface of the plug rod, and a magnetic ring matching the magnetic block is fixedly embedded at the top center of the lower chuck, and the opposite side of the magnetic ring and the magnetic block has different magnetic poles.

7. A strength detection device for steel structure production according to claim 1, characterized in that: A through hole is provided at the center of the rotating disk, and the through hole is communicated with the notch.

8. A strength detection device for steel structure production according to claim 2, characterized in that: A protrusion is fixedly arranged on the inner wall of the lower clamp and at a position close to the bottom end.

9. A strength detection device for steel structure production according to claim 3, characterized in that: A sliding rod is fixedly provided on the outer wall of the base, the sliding rod passes through the base and slides with the base, and a baffle is fixedly provided on one end of the sliding rod passing through the base, a limit spring is sleeved on the outer side of the sliding rod, and both ends of the limit spring are fixedly connected to the baffle and the outer wall of the base respectively.

10. A method for testing using the strength testing device for steel structure production as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps: inserting the workpiece into the limiting assembly on the lower chuck; driving the upper chuck to move downward, and pushing the workpiece to be inspected to the center position of the lower chuck through the extrusion surface on the turntable; when the inspection is completed and the upper chuck is driven to move upward, a plurality of uninspected workpieces can be brought together toward the center position of the lower chuck, thereby limiting the broken workpiece.

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