Strength detection device and detection method for steel structure production

Abstract

The invention discloses a strength detection device and method for steel structure production, and belongs to the technical field of steel structure detection devices.The strength detection device for steel structure production comprises a supporting frame, an upper chuck and a lower chuck, and the upper chuck and the lower chuck are arranged on the inner side of the supporting frame; through holes are formed in the center 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; through the cooperation of the rotating disc and the plurality of workpieces, when the workpieces are snapped and need to be taken out, the plurality of workpieces to be detected can surround the outer sides of the snapped workpieces, so that the snapped workpieces are limited, and the snapped workpieces can fall downwards along the vertical direction without deflection. After the upper chuck and the lower chuck are both separated from the workpiece, the snapped workpiece can be guided out through the through hole in the lower chuck.

Description

Technical Field

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

[0002] Steel structure is a commonly used basic component in building construction. After the production of steel structure, it is necessary to conduct random inspections on the same batch of steel structures. Among them, the tensile strength test is one of the main means to determine whether the steel structure is qualified.

[0003] Chinese patent CN207488060U discloses a steel bar strength detection device, which lowers the control console by driving the connecting rod downward through the downward movement of the rack. When the rack is lowered to a certain position, the anti-collision spring is compressed. At this time, if it continues to shake downward, the anti-collision spring will have an upward elastic force to prevent the rack from continuing to move downward. When the equipment is used, the height of the controller can be reasonably adjusted according to the needs of the staff, avoiding the waste of resources caused by the staff's inability to operate in time due to improper position of the controller.

[0004] The above-mentioned device clamps the workpiece by means of a movable clamp, thereby pulling the workpiece. However, after the workpiece is broken, a worker is required to remove the broken workpiece, and in the process of removing the workpiece, the worker is required to cooperate with the movable clamp above. The operation is inconvenient and there are certain safety hazards. In summary, there is still room for improvement in the above-mentioned 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 object of the present invention is to provide a strength detection device and a detection method for steel structure production, so as to solve the problem that the existing device proposed in the above background technology clamps the workpiece by setting a movable clamp to pull the workpiece, but after the workpiece is broken, the staff needs to remove the broken workpiece, and in the process of removing the workpiece, the staff needs to cooperate with the movable clamp above, which makes the operation inconvenient.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a strength detection device for steel structure production, comprising a support frame and an upper chuck and a lower chuck arranged on the inner side of the support frame, wherein the upper chuck and the lower chuck are provided with through holes at the center positions, the upper chuck is located above the lower chuck, and the upper chuck and the lower chuck are coaxially arranged, and the lower chuck is arranged with multiple groups of limit assemblies matching with the workpiece, and a turntable is rotatably installed at the bottom end of the upper chuck, and the bottom end of the turntable is a conical surface, and when the turntable moves downward, the conical surface on the turntable will squeeze the workpiece, so that the workpiece at the limit assembly 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.

[0008] 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. 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.

[0009] As a further solution of the present invention: the limiting assembly includes a base elastically matched 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.

[0010] As a further solution of the present invention: the positioning assembly includes a limit rod fixedly connected to the turntable, and a plurality of oblique grooves and straight grooves are provided on the inner wall of the limit cylinder. The oblique grooves and the straight grooves are staggered and distributed in a circular array on the inner wall of the limit cylinder, and a plurality of straight grooves are connected end to end with a plurality of oblique grooves. The limit 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 limit cylinder.

[0011] As a further solution of the present invention: 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 fixed in the sliding groove, and an arc spring is fixedly provided between the slider and the fixed block.

[0012] As a further solution of the present invention: an insertion rod is elastically installed at the bottom end of the base, a slot matching the insertion rod is opened on the bottom surface of the slider, a magnetic block is fixedly embedded on the bottom end surface of the insertion 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.

[0013] As a further solution of the present invention: a through hole is opened at the center of the turntable, and the through hole is connected to the above-mentioned notch.

[0014] As a further solution of the present invention: a protrusion is fixedly provided on the inner wall of the lower chuck near the bottom end.

[0015] As a further solution of the present invention: 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, and a limit spring is provided 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.

[0016] A method for testing using the above-mentioned strength testing device for steel structure production includes the following steps: inserting a workpiece into the limit assembly on the lower chuck; driving the upper chuck to move downward, and pushing the workpiece to be tested to the center position of the lower chuck through the extrusion surface on the turntable; when the test is completed and the upper chuck is driven to move upward, multiple untested workpieces can move toward the center position of the lower chuck, thereby limiting the workpiece that has been pulled apart.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: this device cooperates with multiple workpieces through the arranged turntable. When the workpiece is broken and needs to be taken out, multiple workpieces to be tested will be surrounded on the outside of the broken workpiece, thereby limiting the broken workpiece, so that the broken workpiece can fall downward in the vertical direction without deflection. When the upper chuck and the lower chuck are separated from the workpiece, the broken workpiece can be guided out through the through hole on the lower chuck. This structure is conducive to the installation and positioning of the workpiece, and the workpiece can be taken out quickly and stably after the test is completed. During the overall operation, only the upper chuck needs to be moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the lower clamp and the protrusion structure of the present invention; Figure 3 It is a schematic diagram of the structure of the limit assembly of the present invention; Figure 4 It is a schematic diagram of the extrusion surface and the perforation structure of the present invention; Figure 5 is a cross-sectional view of a turntable and an upper chuck of the present invention; Figure 6 It is a schematic diagram of the connection structure between the limiting piece and the base of the present invention; Figure 7 It is a schematic diagram of the positioning groove structure of the present invention; Figure 8 The present invention Figure 7 A schematic diagram of the enlarged structure at point A; Fig. 9 It is a schematic diagram of the structure of the slider of the present invention; Fig.10 The present invention Fig. 9 A schematic diagram of the enlarged structure at B; Fig.11 It is a schematic diagram of the structure of the inclined slot and the straight slot of the present invention; Fig.12 The present invention Fig.11 A schematic diagram of the enlarged structure at C; Fig.13 is a workpiece distribution diagram of the present invention; Fig.14 It is a schematic diagram of the distribution of workpieces during the detection process of the present invention.

[0019] In the figure: 1, support frame; 2, limit cylinder; 201, inclined groove; 202, straight groove; 3, lifting hydraulic rod; 4, workpiece; 5, slide bar; 6, base; 7, lower chuck; 701, positioning groove; 8, baffle; 801, fixing block; 9, limit plate; 901, slider; 9011, slot; 902, positioning column; 10, turntable; 1001, limit rod; 1002, extrusion surface; 1003, perforation; 11, lower chuck; 1101, protrusion; 12, upper chuck; 13, upper chuck; 14, magnetic ring; 15, plug rod; 16, baffle; 17, guide plate. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 6 As shown, a strength detection device and detection method for steel structure production includes a support frame 1 and an upper chuck 13 and a lower chuck 7 arranged inside the support frame 1, wherein the upper chuck 13 is located above the lower chuck 7, and the upper chuck 13 and the lower chuck 7 are coaxially arranged. Figure 1-Figure 3 As shown, the lower chuck 7 is provided with a plurality of limiter assemblies matched with the workpiece 4, and the limiter assemblies can move relative to the lower chuck 7 along the diameter direction thereof, and through holes are provided at the center positions of the upper chuck 13 and the lower chuck 7, so that the two ends of the workpiece 4 can pass through the upper chuck 13 and the lower chuck 7; Furthermore, two upper chucks 12 are symmetrically arranged on the top surface of the upper chuck 13, and two lower chucks 11 are symmetrically arranged on the bottom surface of the lower chuck 7. In actual use, after the two 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 chuck 12 and the lower chuck 11, and then, as the upper chuck 13 gradually moves upward and away from the lower chuck 7, the workpiece 4 can be pulled; A turntable 10 is rotatably installed on the bottom end surface of the upper chuck 13, and the bottom end of the turntable 10 is a conical surface. In actual use, the workpiece 4 is inserted into the limit assembly. When the turntable 10 moves downward in the vertical direction, the inclined conical surface on the turntable 10 will squeeze the workpiece 4, so that the workpiece 4 at the limit assembly can move outward along the diameter direction of the lower chuck 7. The inner top wall of the support frame 1 is fixedly installed with a limit cylinder 2 by bolts, and the limit cylinder 2 and the turntable 10 are matched through a positioning assembly. Specifically, a notch is opened on the conical surface of the turntable 10, and the inner top wall of the notch is an inclined extrusion surface 1002. For details, refer to Figure 4-Figure 5 As 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. Through this structure, when the turntable 10 moves upward, multiple workpieces 4 inserted in the limit assembly can move closer to the center position of the lower chuck 7, which is beneficial to limit the broken workpiece 4, so that the broken workpiece 4 can be smoothly guided out through the through hole on the lower chuck 7. In the process of the turntable 10 moving upward with the upper chuck 13, the positioning assembly 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, so that the two ends of the workpiece 4 to be tested are respectively connected to the upper chuck 12 and the lower chuck 11.

[0021] Reference Figure 2-Figure 7 , Figure 11-Figure 14 As shown, the above-mentioned limiting assembly includes a base 6 elastically matched 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 the positions at both ends of the base 6, and the limiting pieces 9 and the baffles 8 are both arranged in an arc shape, and the centers of the limiting pieces 9 and the baffles 8 are on the same straight line, referring to Figure 3 The range enclosed by the limiting piece 9 and the blocking piece 8 exceeds 180°. Through this structure, when the columnar workpiece 4 is inserted between the limiting piece 9 and the blocking piece 8, the workpiece 4 cannot move in the horizontal direction relative to the limiting piece 9 and the blocking piece 8.

[0022] The positioning assembly includes a limit rod 1001 fixedly connected to the turntable 10, the limit rod 1001 is arranged on the outer peripheral wall of the turntable 10 and close to the top, and a plurality of inclined grooves 201 and straight grooves 202 are provided on the inner wall of the limit cylinder 2, the inclined grooves 201 and the straight grooves 202 are staggered and distributed in a ring array on the inner wall of the limit cylinder 2, and the plurality of straight grooves 202 are connected end to end with the plurality of inclined grooves 201, so that the limit rod 1001 can slide in the straight grooves 202 and the inclined grooves 201, and the straight grooves 202 are distributed vertically. Through this structure, when the upper chuck 13 drives the turntable 10 to move upward, the limit rod 1001 can move upward along the inclined grooves 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; Furthermore, a guide plate 17 is provided at the bottom end of the straight groove 202, and the guide plate 17 is located at the intersection of the straight groove 202 and the inclined groove 201. Figure 11-Figure 12 As shown, the guide plate 17 is hinged to the limiting cylinder 2, and the hinged position is between the top wall of the inclined groove 201 and the bottom surface of the guide plate 17. Through this structure, when the guide plate 17 is in a state approximately parallel to the inclined groove 201, the guide plate 17 can only deflect downward relative to the straight groove 202. Through this structure, when the limiting rod 1001 moves downward along the straight groove 202 and is placed at the intersection of the inclined groove 201 and the straight groove 202, as the turntable 10 moves upward relative to the limiting cylinder 2, the limiting rod 1001 can slide along the guide plate 17 into the inclined groove 201.

[0023] In actual use, multiple workpieces 4 to be tested are inserted between the baffle plate 8 and the limiting plate 9. Since the range enclosed by the baffle plate 8 and the limiting plate 9 matches the columnar workpiece 4, the workpiece 4 can be stably inserted between the baffle plate 8 and the limiting plate 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 tension on the workpiece 4 gradually increases. When the workpiece 4 is broken, the tensile test of the workpiece 4 is completed. At this time, the upper chuck 13 and the turntable 10 continue to be driven upward. In this process, the limiting rod 1001 will move upward along the inclined slot 201. The squeezing of the limiting rod 1001 by the inclined slot 201 can drive the turntable 10 to deflect. Specifically, when the limiting rod When 1001 slides upward to the intersection of the straight groove 202 and the inclined groove 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, multiple workpieces 4 inserted between the limit plates 9 and the baffle plates 8 will move toward the center of the lower chuck 7. At this time, the workpieces 4 inserted between the baffle plates 8 and the limit plates 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 in the vertical direction without deflection, which is conducive to the broken workpiece 4 passing through the through hole on the lower chuck 7 and being exported. For details, please refer to Fig.13 As shown, Fig.13 The workpieces 4 at the periphery are the workpieces 4 inserted between the baffles 8 and the limiter 9, while the workpieces 4 at the center are the broken workpieces 4; Afterwards, the upper chuck 13 and the turntable 10 can be driven to move downward. Since the notch on the turntable 10 is aligned with the next workpiece 4 to be inspected, as the turntable 10 moves downward, the pressure of the extrusion surface 1002 on the workpiece 4 can drive the workpiece 4 to move toward a position close 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 chuck 11. At the same time, as the turntable 10 moves downward, the extrusion of the workpiece 4 by the conical surface at the bottom of the turntable 10 can cause multiple workpieces 4 to spread outward, which is beneficial for the staff to observe the workpiece 4 being inspected. In addition, as the turntable 10 moves downward, the limit 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 in one direction relative to the straight groove 202, when the turntable 10 moves upward next time, the limit rod 1001 can slide along the guide plate 17 into the inclined groove 201, which is beneficial for the next use.

[0024] To sum up, this device cooperates with multiple workpieces 4 through the set turntable 10. When the workpiece 4 is broken and needs to be taken out, the multiple workpieces 4 to be tested will be surrounded on the outside of the broken workpiece 4, thereby limiting the broken workpiece 4, so that the broken workpiece 4 can fall downward in the vertical direction without deflection. When the upper chuck 12 and the lower chuck 11 are separated from the workpiece 4, the broken workpiece 4 can be guided out through the through hole on the lower chuck 7. This structure is conducive to the installation and positioning of the workpiece 4, and the workpiece 4 can be taken out quickly and stably after the test is completed. During the overall operation, only the upper chuck 13 needs to be moved.

[0025] Reference Figure 3 , Figure 6 As shown, a slider 901 is fixedly arranged on the outer wall of the limit plate 9, and a slide groove slidably matched with the slider 901 is opened on the inner wall of the base 6, and the cross-sections of the slider 901 and the slide groove are both set to be T-shaped, and a fixed block 801 is fixedly arranged on the outer wall of the baffle 8, and the fixed block 801 is in the slide groove, and the fixed block 801 is fixedly connected to the base 6 by bolts, and an arc spring is fixedly arranged between the slider 901 and the fixed block 801; Further, refer to Fig. 9 , Fig.10 As shown, a plug rod 15 is elastically mounted at the bottom end of the base 6, and a slot 9011 matching the plug rod 15 is provided on the bottom surface of the slider 901, and a magnetic block is fixedly embedded on the bottom end surface of the plug rod 15, referring to Figure 3 As shown, a magnetic ring 14 cooperating with the magnetic block is fixedly embedded at the top center 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 side 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 through hole position 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, so that 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 disengaged from the slot 9011. At this time, the limit plate 9 will rotate relative to the base 6 in the direction close to the baffle 8, so that the wrapping range of the limit plate 9 and the baffle 8 on the workpiece 4 is less than 180°. At this time, the base 6 can drive the baffle 8 and the limit plate 9 to move in the direction away from the workpiece 4 and reset, so as to facilitate the next use, and at the same time, it can also avoid the interference of the broken workpiece 4 with the base 6 when falling.

[0026] As a further optimization of the above scheme, refer to Figure 7-Figure 9As shown, in this scheme, a positioning column 902 is elastically installed on one side of the bottom surface of the limiting plate 9. Specifically, the bottom surface of the limiting plate 9 is provided with a mounting hole that slidably cooperates with the positioning column 902, and a spring is fixedly arranged between the inner end surface of the mounting hole and the positioning column 902. Through this structure, the elastic cooperation between the positioning column 902 and the limiting plate 9 can be achieved. The top surface of the lower chuck 7 is evenly provided with a plurality of mounting grooves, and the above-mentioned base 6 is slidably arranged in the mounting groove, and the bottom surface of the mounting groove is provided with a positioning groove 701 that cooperates with the positioning column 902. 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, when the base 6 approaches the magnetic ring 14, the positioning column 902 is squeezed by the bottom surface of the positioning groove 701 and can be received in the limiting plate 9, thereby moving When the workpiece 4 is pushed to the through hole of the lower chuck 7, the limit plate 9 on the base 6 will gradually approach the baffle 8, which is conducive to the resetting of the base 6. During the resetting process of the base 6, the positioning column 902 on the limit plate 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 positioning column 902 can be limited by the side of the positioning groove 701 away from the magnetic ring 14 to prevent the positioning column 902 from continuing to move with the base 6. Therefore, when the base 6 continues to reset, the limit plate 9 will deflect relative to the base 6 toward the end direction of the base 6. When the slot 9011 on the limit plate 9 is realigned with the insertion rod 15, the insertion rod 15 will pop out and reinsert into the slot 9011, so that the limit plate 9 can be locked again by the insertion rod 15, which is conducive to the next use.

[0027] like Figure 1 As shown, the lower chuck 7 is fixedly installed on the ground through a support column, and a lifting hydraulic rod 3 is fixedly installed on 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, and 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.

[0028] Reference Figure 2 As shown, a through hole 1003 is opened at the center of the turntable 10, and the through hole 1003 is connected to the above-mentioned groove. 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 chuck 12.

[0029] In actual use, the turntable 10 and the upper chuck 13 can be rotatably connected via a bearing.

[0030] Refer again Figure 2As shown, a protrusion 1101 is fixedly provided on the inner wall of the lower chuck 11 and near the bottom end. Through this structure, when the workpiece 4 is pushed to the through hole position of the lower chuck 7 by the extrusion surface 1002, the workpiece 4 can fall onto the protrusion 1101 through the through hole. Therefore, the workpiece 4 can be supported by the protrusion 1101, and then, the workpiece 4 can be clamped when the lower chuck 11 approaches.

[0031] Reference Figure 2-Figure 3 As shown, hydraulic rods are arranged on the outer sides of the upper chuck 12 and the lower chuck 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 located at the upper chuck 13 is fixedly connected to the upper chuck 12, while the telescopic end of the hydraulic rod located at the lower chuck 7 is fixedly connected to the lower chuck 11.

[0032] A slide rod 5 is fixedly provided on the outer wall of the base 6, the slide rod 5 passes through the base 6 and slides with it, and a baffle is fixedly provided on one end of the slide rod 5 passing through the base 6, and a limit spring is sleeved on the outer side of the slide rod 5, and the two ends of the limit spring are respectively fixedly connected to the baffle and the outer wall of the base 6. This structure is conducive to driving the base 6 to reset.

[0033] Reference Fig.10 As shown, the base 6 is provided with a through groove which is slidably matched with the insertion rod 15 , a retaining ring is fixedly provided inside the through groove and near the bottom end, and a first spring is fixedly provided between the retaining ring and the insertion rod 15 .

[0034] Reference Fig.11 As shown, in actual use, a baffle 16 can also be set 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 limit cylinder 2, and the hinged position is located at a side of the baffle 16 parallel to the straight groove 202, combined with Figure 11-Figure 12 As shown, a second spring is fixedly arranged 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. Through this structure, it is conducive to achieving elastic cooperation between the baffle 16 and the guide plate 17 and the limiting cylinder 2. When the limiting rod 1001 passes over the guide plate 17, it can only move upward along the inclined groove 201. In addition, when the limiting rod 1001 passes over the baffle 16, it can only move downward along the straight groove 202.

[0035] Reference Figure 13-14 As shown, in actual use, the turntable 10 can grab the workpiece 4 on the lower chuck 7 at intervals when rotating. Specifically, Fig.13A workpiece 4 at the periphery is pushed to the center of the lower chuck 7 by the extrusion surface 1002, and when the turntable 10 is driven to rotate by the cooperation of the limit rod 1001 and the inclined groove 201, the extrusion surface 1002 on the turntable 10 will pass over the adjacent workpiece 4 and cooperate with the next workpiece 4, as shown in FIG. Fig.14 As shown, in this way, the remaining workpieces 4 can limit the broken workpiece 4 after they are moved toward 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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