A device for detecting the strength of a connection point of a building structural member

Abstract

The application discloses a kind of building structural member connecting point strength detection device, respectively including mounting on the steel bar of building wall and the movable installation of steel bar outside frame, the inner surface between frame is hinged with bending frame by two symmetrical hinges, the top surface of frame is installed with the bending measurement component of cooperation with bending frame, the relative surface between frame and bending frame is hinged with two symmetrical pneumatic push rod, pneumatic push rod is internally mounted with air pressure probe b, the inner surface between frame is fixedly installed with the guide column of horizontal arrangement, the circumferential surface of guide column is slidably connected with two symmetrical detection plate, the surface of two detection plates is equipped with detection mechanism.The application is equipped with detection mechanism and drive assembly etc., so that the device can efficiently complete the strength detection of building structural member connecting point, and the device integrates anti-pulling detection mode, anti-tension detection mode, anti-rotation detection mode and anti-bending detection mode during detection.

Description

Technical Field

[0001] This invention relates to the field of testing device technology, and more specifically, to a testing device for the strength of connection points of building structural components. Background Technology

[0002] Structural components are various parts that, after being hoisted, assembled, and installed during the construction of building installation projects, can form the physical entity of the building installation project.

[0003] With the development of decorative building technology, precast concrete components such as high-strength bolts and anchors are widely used in building projects. Precast components play an important role in subsequent construction, so the strength of their connection points must meet certain requirements to ensure the quality and safety of subsequent construction. Currently, the commonly used testing method is to manually tap the structural components with a hammer and observe the shaking of the structural components and the tightness of the connecting bolts to obtain the strength of the connection points. In the existing technology, various types of strength testing devices have emerged. For example, patent document CN111157232B discloses a strength testing device for connection points of building structural components. The first clamping connection component and the second connecting clamping component of the above device have the same structure, which facilitates the fastening connection with high-strength bolts. It is easy to use. After disassembling the torque sensor and replacing it with the tensile testing component, the pull-out resistance of the high-strength bolts can be checked. However, the above device has a relatively simple testing mode and limited functionality. Based on this, the present invention provides a strength testing device for connection points of building structural components to solve the problems mentioned in the background technology. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a strength testing device for connection points of building structural components. Through the configuration of the testing mechanism and drive components, the present invention enables the device to efficiently complete the strength testing of connection points of building structural components. Furthermore, the device integrates pull-out testing mode, tensile testing mode, torsion testing mode, and bending testing mode during the testing operation.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a structural member connection point strength testing device comprises a steel reinforcement member installed on a building wall and a frame movably installed on the outside of the steel reinforcement member. A bending frame is hinged between the inner surfaces of the frame via two symmetrically arranged hinge shafts. A bending measuring component cooperating with the bending frame is installed on the top surface of the frame. Two symmetrically arranged pneumatic push rods are hinged between the opposing surfaces of the frame and the bending frame. A pneumatic probe b is installed inside each pneumatic push rod. A horizontally arranged guide post is fixedly installed between the inner surfaces of the frame. Two symmetrically arranged detection plates are slidably connected to the circumferential side of the guide post. Detection mechanisms are installed on the surfaces of both detection plates, and the two detection mechanisms are symmetrically arranged. A driving component is fixedly installed on the surface of one of the detection plates.

[0008] As a preferred embodiment, the bending measurement assembly includes a transmission gear fixed to the circumferential side of a hinge shaft and a sleeve fixed to the top surface of the frame and arranged horizontally. A piston seat is slidably connected to the inner wall of the sleeve. A pressure measuring chamber is fixedly arranged between the back of the piston seat and the opposite surface of the sleeve. A pneumatic probe a that cooperates with the pressure measuring chamber is fixedly installed at the tail of the sleeve. A driven toothed plate is fixedly installed on the end face of the piston seat. The circumferential side of the driven toothed plate meshes with the transmission gear. A sealing ring is fixedly arranged on the circumferential side of the piston seat. The hinge shaft is arranged vertically.

[0009] As a preferred embodiment, the detection mechanism includes a torsion tube rotatably connected to the inner wall of the detection plate, a compression ring and a pressure measuring ring sleeved on the outer side of the torsion tube, and a pressure plate rotatably connected to the circumferential side of the compression ring. The torsion tube is sleeved on the outer side of the reinforcing bar, and its end is connected to two symmetrically arranged semi-arc tubes. A horizontally arranged clamping screw is rotatably connected to the inner wall of the detection plate, and the circumferential side of the clamping screw is drivenly connected to the pressure plate. A set of regularly distributed pressure sensors is installed between the pressure measuring ring and the opposite surface of the detection plate. The inner wall of the pressure measuring ring is slidably connected to a guide post. A horizontally arranged transmission screw is rotatably connected to the inner wall of the frame, and the circumferential side of the transmission screw is drivenly connected to the pressure measuring ring.

[0010] As a preferred embodiment, a gap is fixedly provided between the opposing surfaces of the two semi-clamped tubes, a guide ring surface that cooperates with the extrusion ring is fixedly provided on the peripheral side of the semi-clamped tube, the full arc of the semi-clamped tube is 160°, and friction texture is fixedly provided on the inner wall of the semi-clamped tube.

[0011] As a preferred embodiment, both the clamping screw and the transmission screw are fixedly equipped with transmission knobs at their ends, and the axes of both the clamping screw and the transmission screw are parallel to the axis of the reinforcing bar.

[0012] As a preferred embodiment, the drive assembly includes a guide toothed plate that is slidably connected to the detection plate and horizontally arranged, and a torsion gear fixed to the circumferential side of the torsion tube. The circumferential side of the torsion gear meshes with the guide toothed plate. A pressure-applying push rod that is parallel to the guide toothed plate is fixedly installed on the inner wall of the detection plate. A force-measuring rod is fixedly installed at the end of the pressure-applying push rod. An annular pressure sensor is installed at the end of the pressure-applying push rod at a position relative to the guide toothed plate. The circumferential side of the force-measuring rod is slidably connected to the guide toothed plate. The axis of the pressure-applying push rod is perpendicular to the axis of the transmission lead screw.

[0013] As a preferred embodiment, the cross-section of the force measuring rod is T-shaped, and the annular pressure sensor is coaxially arranged with the force measuring rod.

[0014] As a preferred embodiment, a battery is fixedly installed on the side of the frame, handles are fixedly installed on both sides of the frame, and a central control unit is fixedly installed on the top surface of the frame. The ports of the battery, the ring-shaped pressure sensor, and the air pressure probe a are all electrically connected to the central control unit. The surface of the central control unit is respectively provided with a display screen and central control buttons.

[0015] As a preferred embodiment, a through hole is fixedly provided at the axial position of the end face of the frame.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a strength testing device for connection points of building structural components, which has the following beneficial effects.

[0018] This invention enables the device to efficiently complete the strength testing of connection points of building structural components through the design of the testing mechanism and drive components. Furthermore, the device integrates pull-out testing mode, tensile testing mode, torsion testing mode and bending testing mode during the testing operation. By realizing the above-mentioned integrated functions, the applicable scenarios of the device are effectively increased and the versatility of the device is improved. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a structural member connection point strength testing device according to the present invention;

[0020] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0021] Figure 3 This is a structural schematic diagram of the building wall and reinforcing steel components of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the semi-clamped arc tube and sleeve of the present invention;

[0023] Figure 5This is a schematic diagram of the structure of the guide post and the torsion tube of the present invention;

[0024] Figure 6 This is a cross-sectional structural diagram of the pressure plate and clamping screw of the present invention;

[0025] Figure 7 This is a schematic diagram of the extrusion ring and pressure plate of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the detection plate and the guide tooth plate of the present invention;

[0027] Figure 9 This is a schematic diagram of the force measuring rod and the ring-shaped pressure sensor of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of the battery of the present invention.

[0029] In the diagram: 1. Building wall; 2. Reinforcing steel; 3. Frame; 4. Hinge shaft; 5. Bending frame; 6. Pneumatic push rod; 7. Air pressure probe b; 8. Guide column; 9. Detection plate; 10. Transmission gear; 11. Sleeve; 12. Air pressure probe a; 13. Driven gear plate; 14. Torsion tube; 15. Extrusion ring; 16. Pressure measuring ring; 17. Pressure plate; 18. Semi-clamped arc tube; 19. Clamping screw; 20. Pressure sensor; 21. Transmission screw; 22. Guide gear plate; 23. Torsion gear; 24. Pressure push rod; 25. Force measuring rod; 26. Ring-shaped pressure sensor; 27. Battery; 28. Handle; 29. ​​Central control unit; 30. Through hole. Detailed Implementation

[0030] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0031] Please see Figure 1-10 The present invention is a strength testing device for connection points of building structural components. The technical solution adopted is as follows: it includes a steel bar 2 installed on the building wall 1 and a frame 3 movably installed on the outside of the steel bar 2. A through hole 30 is fixedly opened at the axial position of the end face of the frame 3.

[0032] A battery 27 is fixedly installed on the side of the rack 3, and handles 28 are fixedly installed on both sides of the rack 3. A central control host 29 is fixedly installed on the top surface of the rack 3. The surface of the central control host 29 is provided with a display screen and central control buttons.

[0033] The battery 27 is a rechargeable battery 27, which is used to supply power to the electrical working mechanism in this device.

[0034] The central control unit 29 is used to control the working status of the relevant power mechanisms in this device;

[0035] A bending frame 5 is hinged between the inner surfaces of the frame 3 by two symmetrically arranged hinge shafts 4, and a bending measuring component that cooperates with the bending frame 5 is installed on the top surface of the frame 3.

[0036] The bending test assembly includes a transmission gear 10 fixed to the circumferential side of a hinge shaft 4 and a sleeve 11 fixed to the top surface of the frame 3 and horizontally arranged. A piston seat is slidably connected to the inner wall of the sleeve 11. A sealing ring is fixedly arranged on the circumferential side of the piston seat. A pressure testing chamber is fixedly arranged between the back of the piston seat and the opposite surface of the sleeve 11. A pneumatic probe a12 that cooperates with the pressure testing chamber is fixedly installed at the tail of the sleeve 11. The pneumatic probe a12 is used to monitor the pneumatic pressure data inside the pressure testing chamber in real time. During operation, the pneumatic probe a12 feeds back the monitored real-time signal to the central control host 29. The central control host 29 uses the data feedback from the pneumatic probe a12 to assist in measuring the degree of bending of the steel bar 2.

[0037] A driven gear plate 13 is fixedly mounted on the end face of the piston seat. The peripheral side of the driven gear plate 13 meshes with the transmission gear 10. The hinge shaft 4 is vertically arranged.

[0038] Two symmetrically arranged pneumatic push rods 6 are hinged between the opposing surfaces of the frame 3 and the bending frame 5, and a pneumatic probe b7 is installed inside the pneumatic push rod 6.

[0039] During operation, the two pneumatic push rods 6 cooperate with each other to provide torque to the bending frame 5. When the bending frame 5 deflects, the transmission gear 10 rotates driven, and the displacement of the transmission gear 10 is transmitted to the driven tooth plate 13. After the driven tooth plate 13 moves, it then applies the displacement to the piston seat. After the piston seat moves, it then squeezes the pressure testing chamber. When the pressure testing chamber is compressed, the data of the air pressure probe a12 changes. During the detection operation, the data feedback value of the air pressure probe a12 is directly proportional to the bending amplitude value of the steel bar 2. By measuring the data feedback value of the air pressure probe a12, the bending amplitude data at the connection between the steel bar 2 and the building wall 1 can be quickly measured.

[0040] Furthermore, during operation, both pneumatic push rods 6 are powered by external air supply equipment;

[0041] The air pressure probe b7 is used to monitor the force data of the pneumatic push rod 6 applied to the bending frame 5 in real time;

[0042] When in use, the data feedback from the air pressure probe b7 is directly proportional to the thrust data of the pneumatic push rod 6;

[0043] When the air pressure probe b7 produces a sudden value, the peak value of the air pressure probe b7 when it is working is recorded, and then the bending strength data of the connection between the steel bar 2 and the building wall 1 is obtained in the auxiliary measurement.

[0044] A horizontally arranged guide post 8 is fixedly installed between the inner surfaces of the frame 3. Two symmetrically arranged detection plates 9 are slidably connected to the periphery of the guide post 8. Detection mechanisms are installed on the surfaces of the two detection plates 9. The two detection mechanisms are symmetrically arranged. A drive component is fixedly installed on the surface of one detection plate 9.

[0045] The testing mechanism includes a torsion tube 14 rotatably connected to the inner wall of the testing plate 9, a compression ring 15 and a pressure measuring ring 16 sleeved on the outside of the torsion tube 14, and a pressure plate 17 rotatably connected to the periphery of the compression ring 15. The torsion tube 14 is sleeved on the outside of the reinforcing bar 2, and the end of the torsion tube 14 is connected to two symmetrically arranged semi-arc tubes 18.

[0046] A gap is fixedly provided between the opposing surfaces of the two semi-clamped tubes 18. A guide ring surface that mates with the extrusion ring 15 is fixedly provided on the peripheral side of the semi-clamped tube 18. The full arc of the semi-clamped tube 18 is 160°s. Friction texture is fixedly provided on the inner wall of the semi-clamped tube 18.

[0047] When the extrusion ring 15 approaches the two semi-clamped tubes 18, the guide ring surface effectively extrudes the two semi-clamped tubes 18. After being extruded, the two semi-clamped tubes 18 move closer to each other, effectively extruding and clamping the reinforcing bar 2. After being extruded and clamped, the reinforcing bar 2 is effectively limited.

[0048] By setting the friction texture, the restrained strength of the steel bar 2 is effectively guaranteed;

[0049] A horizontally arranged clamping screw 19 is rotatably connected to the inner wall of the detection plate 9. The circumferential side of the clamping screw 19 is connected to the pressure plate 17. A set of regularly distributed pressure sensors 20 are installed between the pressure measuring ring 16 and the opposite surface of the detection plate 9. The inner wall of the pressure measuring ring 16 is slidably connected to the guide post 8. A horizontally arranged transmission screw 21 is rotatably connected to the inner wall of the frame 3. The circumferential side of the transmission screw 21 is connected to the pressure measuring ring 16.

[0050] Both the clamping screw 19 and the transmission screw 21 are fixedly equipped with transmission knobs at their ends, and the axes of both the clamping screw 19 and the transmission screw 21 are parallel to the axis of the reinforcing bar 2.

[0051] During operation, the pressure sensor 20 is used to detect the pressure data given to the detection plate 9 by the pressure measuring ring 16 in real time. When the pressure sensor 20 is working, it feeds back the monitored real-time data to the central control host 29. The central control host 29 uses the data feedback from the pressure sensor 20 to assist in measuring the compressive strength or tensile strength at the connection between the steel reinforcement 2 and the building wall 1.

[0052] The drive assembly includes a guide toothed plate 22 that is slidably connected to the detection plate 9 and horizontally arranged, and a torsion gear 23 fixed to the circumferential side of the torsion tube 14. The circumferential side of the torsion gear 23 meshes with the guide toothed plate 22. A pressure push rod 24 that is parallel to the guide toothed plate 22 is fixedly installed on the inner wall of the detection plate 9.

[0053] The axis of the pressure push rod 24 is perpendicular to the axis of the transmission screw 21;

[0054] A force measuring rod 25 is fixedly installed at the end of the pressure push rod 24. An annular pressure sensor 26 is installed at the end of the pressure push rod 24 and at a position relative to the guide tooth plate 22. The circumferential side of the force measuring rod 25 is slidably connected to the guide tooth plate 22.

[0055] The cross-section of the force measuring rod 25 is T-shaped, and the annular pressure sensor 26 is coaxially arranged with the force measuring rod 25;

[0056] The annular pressure sensor 26 is used to monitor the pressure data of the pressure push rod 24 pressing the guide tooth plate 22 in real time;

[0057] When the annular pressure sensor 26 is working, it feeds back the monitored real-time data to the central control host 29. The central control host 29 uses the data feedback from the annular pressure sensor 26 to assist in measuring the torsional strength, rotational strength and frictional strength at the connection between the steel reinforcement 2 and the building wall 1.

[0058] The ports of the storage battery 27, the ring pressure sensor 26, and the air pressure probe a12 are all electrically connected to the central control host 29;

[0059] The working principle of this invention is as follows: During the testing operation, this device is equipped with four testing modes. The first testing mode is the bending strength testing mode, which is suitable for the bending strength testing requirements at the connection between the steel reinforcement 2 and the building wall 1.

[0060] In the bending test mode, the semi-clamping tubes 18 in both testing mechanisms effectively clamp the steel bar 2. After the steel bar 2 is clamped, the value of the air pressure probe a12 is pre-calibrated to zero. After the value of the air pressure probe a12 is calibrated to zero, the two pneumatic push rods 6 cooperate with each other to bend the steel bar 2 to one side. When the bending frame 5 bends, the peak value of the air pressure probe b7 is recorded, which in turn helps to measure the bending strength data at the connection between the steel bar 2 and the building wall 1.

[0061] The second mode is the anti-torsion test mode, which is suitable for testing the anti-torsion strength at the connection between the steel reinforcement 2 and the building wall 1.

[0062] In the anti-torsion mode, the semi-clamping tubes 18 in both detection mechanisms effectively clamp the steel bar 2. After the steel bar 2 is clamped, the pressure push rod 24 applies pressure, and the annular pressure sensor 26 feeds back the monitored real-time data to the central control host 29. When the steel bar 2 rotates, the peak value of the annular pressure sensor 26 is recorded, which in turn helps to measure the anti-torsion strength at the connection between the steel bar 2 and the building wall 1.

[0063] The third mode is the compressive strength test mode, which is suitable for the compressive strength test requirements at the connection between the steel reinforcement 2 and the building wall 1;

[0064] In the compressive strength test mode, the semi-clamped tube 18 in the test mechanism on the side closer to the building wall 1 loses its clamping effect on the steel bar 2, while the semi-clamped tube 18 in the test mechanism on the side farther from the building wall 1 effectively clamps the steel bar 2. Subsequently, the transmission screw 21 in the test mechanism at the working position works. When the pressure sensor 20 in the test mechanism at that position generates a peak value, the peak value is recorded, thereby assisting in measuring the compressive strength at the connection between the steel bar 2 and the building wall 1.

[0065] The fourth mode is the pull-out test mode, which is suitable for the pull-out strength test requirements at the connection between the steel reinforcement 2 and the building wall 1.

[0066] In the pull-out test mode, the semi-clamped tube 18 in the test mechanism away from the building wall 1 loses its clamping effect on the steel bar 2, while the semi-clamped tube 18 in the test mechanism close to the building wall 1 effectively clamps the steel bar 2. Subsequently, the transmission screw 21 in the test mechanism at the working position works. When the pressure sensor 20 in the test mechanism at that position generates a peak value, the peak value is recorded, thereby assisting in measuring the pull-out strength at the connection between the steel bar 2 and the building wall 1.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A strength testing device for connection points of building structural components, comprising a reinforcing steel member (2) installed on a building wall (1) and a frame (3) movably installed on the outside of the reinforcing steel member (2), characterized in that, A bending frame (5) is hinged between the inner surfaces of the frame (3) by two symmetrically arranged hinge shafts (4). A bending measuring component that cooperates with the bending frame (5) is installed on the top surface of the frame (3). Two symmetrically arranged pneumatic push rods (6) are hinged between the opposite surfaces of the frame (3) and the bending frame (5). A pneumatic probe b (7) is installed inside the pneumatic push rod (6). A horizontally arranged guide post (8) is fixedly installed between the inner surfaces of the frame (3). Two symmetrically arranged detection plates (9) are slidably connected to the circumferential side of the guide post (8). A detection mechanism is installed on the surface of both detection plates (9). The two detection mechanisms are symmetrically arranged. A drive component is fixedly installed on the surface of one of the detection plates (9). The bending test assembly includes a transmission gear (10) fixed to the circumferential side of a hinge shaft (4) and a sleeve (11) fixed to the top surface of the frame (3) and arranged horizontally. A piston seat is slidably connected to the inner wall of the sleeve (11). A pressure testing chamber is fixedly arranged between the back of the piston seat and the opposite surface of the sleeve (11). A pneumatic probe a (12) that cooperates with the pressure testing chamber is fixedly installed at the tail of the sleeve (11). A driven toothed plate (13) is fixedly installed on the end face of the piston seat. The circumferential side of the driven toothed plate (13) meshes with the transmission gear (10). A sealing ring is fixedly arranged on the circumferential side of the piston seat. The hinge shaft (4) is arranged vertically. The detection mechanism includes a torsion tube (14) rotatably connected to the inner wall of the detection plate (9), a compression ring (15) and a pressure measuring ring (16) sleeved on the outside of the torsion tube (14), and a pressure plate (17) rotatably connected to the periphery of the compression ring (15). The torsion tube (14) is sleeved on the outside of the reinforcing bar (2). The end of the torsion tube (14) is connected to two symmetrically arranged semi-arc tubes (18). The inner wall of the detection plate (9) is rotatably connected to a horizontally arranged clamping screw (19). The periphery of the clamping screw (19) is connected to the pressure plate (17) in a transmission connection. A set of regularly distributed pressure sensors (20) is installed between the pressure measuring ring (16) and the relative surface of the detection plate (9). The inner wall of the pressure measuring ring (16) is slidably connected to the guide post (8). The inner wall of the frame (3) is rotatably connected to a horizontally arranged transmission screw (21). The periphery of the transmission screw (21) is connected to the pressure measuring ring (16) in a transmission connection.

2. The strength testing device for connection points of building structural components according to claim 1, characterized in that: A gap is fixedly provided between the opposing surfaces of the two semi-clamped tubes (18), and a guide ring surface that cooperates with the extrusion ring (15) is fixedly provided on the peripheral side of the semi-clamped tube (18). The arc of the semi-clamped tube (18) is 160°, and a friction texture is fixedly provided on the inner wall of the semi-clamped tube (18).

3. The strength testing device for connection points of building structural components according to claim 2, characterized in that: The ends of the clamping screw (19) and the transmission screw (21) are both fixedly equipped with transmission knobs, and the axes of the clamping screw (19) and the transmission screw (21) are parallel to the axis of the steel bar (2).

4. The strength testing device for connection points of building structural components according to claim 3, characterized in that: The drive assembly includes a guide toothed plate (22) that is slidably connected to the detection plate (9) and horizontally arranged, and a torsion gear (23) fixed to the circumferential side of the torsion tube (14). The circumferential side of the torsion gear (23) meshes with the guide toothed plate (22). A pressure push rod (24) is fixedly installed on the inner wall of the detection plate (9) and is arranged parallel to the guide toothed plate (22). A force measuring rod (25) is fixedly installed at the end of the pressure push rod (24). An annular pressure sensor (26) is installed at the end of the pressure push rod (24) and at a position relative to the guide toothed plate (22). The circumferential side of the force measuring rod (25) is slidably connected to the guide toothed plate (22). The axis of the pressure push rod (24) is perpendicular to the axis of the transmission screw (21).

5. The strength testing device for connection points of building structural components according to claim 4, characterized in that: The cross-section of the force measuring rod (25) is T-shaped, and the annular pressure sensor (26) is coaxially arranged with the force measuring rod (25).

6. The strength testing device for connection points of building structural components according to claim 5, characterized in that: A battery (27) is fixedly installed on the side of the frame (3). Handles (28) are fixedly installed on both sides of the frame (3). A central control host (29) is fixedly installed on the top surface of the frame (3). The ports of the battery (27), the ring pressure sensor (26) and the air pressure probe a (12) are all electrically connected to the central control host (29). The surface of the central control host (29) is respectively provided with a display screen and central control buttons.

7. The strength testing device for connection points of building structural components according to claim 6, characterized in that: The frame (3) has a through hole (30) fixedly opened at the axial position of the end face.

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