A reinforcing bar strength detection device

Abstract

The application discloses a steel bar strength detection equipment, and belongs to the technical field of building material detection, which comprises a workbench, and a positioning hole is formed in the upper surface of the workbench; the steel bar is clamped and fixed through a lower clamping mechanism and an upper clamping mechanism, so that the steel bar is prevented from slipping during detection, the effectiveness of the applied tension is ensured, the movable plate is driven to move up and down through the extension and retraction of an electric telescopic rod, then the upper clamping mechanism is used to apply tension to the steel bar, the movable plate and the workbench are connected through a tension sensor and a tension detection rope, the tension applied to the steel bar can be monitored in real time, an infrared range finder is used to measure the displacement of the movable plate, so that the stretching amount of the steel bar is obtained, and a camera observation mechanism is used to observe the morphological change of the steel bar during stretching; the detection equipment has a relatively compact structure, does not need a laboratory environment, can be carried to a construction site, and is integrated with control and data display through a controller, so that the operation process is simplified, and the skill requirement for an operator is reduced.

Description

Technical Field

[0001] This application relates to the field of building material testing technology, and in particular to a steel reinforcement strength testing device. Background Technology

[0002] In the modern construction industry, steel bars serve as the "skeleton" supporting building structures, and their strength performance is a core element in ensuring building safety and durability. From towering skyscrapers to bridges spanning rivers, from residential buildings supporting thousands of residents to tunnel projects ensuring smooth traffic flow, steel bars, as an indispensable material in building structures, directly affect the safety and durability of buildings.

[0003] Currently, the strength of reinforcing bars is mainly tested using a universal testing machine in a laboratory. Although this method is highly accurate, the equipment is expensive, the operation is complicated, and it cannot be tested on-site. Therefore, an improvement has been made to a reinforcing bar strength testing device. Utility Model Content

[0004] In view of the shortcomings of the prior art, this application provides a steel bar strength testing device, which overcomes the shortcomings of the prior art and aims to solve the problems in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution: a rebar strength testing device, comprising a workbench, a positioning hole on the upper surface of the workbench, a lower clamping mechanism above the positioning hole, a mounting frame fixedly mounted on the upper surface of the workbench, an electric telescopic rod fixedly mounted on the top of the mounting frame, a movable plate fixedly connected to the lower end of the electric telescopic rod, an upper clamping mechanism fixedly mounted on the lower surface of the movable plate, and a rebar to be tested clamped between the upper and lower clamping mechanisms, a tension sensor and an infrared rangefinder fixedly mounted on the lower surface of the movable plate on both sides of the upper clamping mechanism, a tension detection rope fixedly connected to the lower end of the tension sensor, the lower end of the tension detection rope fixedly connected to the workbench, a camera observation mechanism fixedly mounted on the inner wall of the mounting frame, and a controller fixedly mounted on the front side of the workbench.

[0006] By adopting the above technical solution, the workbench serves as the basic load-bearing structure of the equipment. Positioning holes on its upper surface are used to place the reinforcing bars to be tested. The lower clamping mechanism clamps and fixes the reinforcing bars to the center of the positioning holes, and the upper clamping mechanism clamps and fixes the upper end of the reinforcing bars, thus firmly clamping them and preventing slippage during testing, ensuring the effectiveness of the applied tension. The electric telescopic rod extends and retracts, causing the moving plate to move up and down, thereby applying tension to the reinforcing bars through the upper clamping mechanism. A tension sensor and tension detection rope connect the moving plate to the workbench, allowing real-time monitoring of the tension on the reinforcing bars. An infrared rangefinder measures the displacement of the moving plate, thus determining the amount of tension in the reinforcing bars. A camera observation mechanism observes the morphological changes of the reinforcing bars during the tensioning process. This testing equipment has a relatively compact structure, requires no laboratory environment, and can be carried to the construction site. Furthermore, the controller integrates control and data display, simplifying the operation process and reducing the skill requirements for operators.

[0007] As a preferred technical solution of this application, the lower clamping mechanism includes a positioning frame fixedly installed on the surface of the workbench. A threaded rod is rotatably connected inside the positioning frame. A drive motor for driving the threaded rod to rotate is fixedly installed on the side wall of the positioning frame. The outer wall of the threaded rod is provided with connecting threads in opposite directions on both sides of the positioning hole. Two lower clamping parts are threadedly sleeved on the outer wall of the threaded rod.

[0008] By adopting the above technical solution, the threaded rod is driven to rotate by the drive motor, causing the two lower clamping parts to move towards each other from both sides of the steel bar, thereby clamping and fixing the steel bar at the center of the positioning hole.

[0009] As a preferred technical solution of this application, a guide rod is fixedly connected inside the positioning frame on one side of the threaded rod, and both lower clamping members are slidably sleeved on the outer wall of the guide rod.

[0010] By adopting the above technical solution, the guide rod provides a moving path for the lower clamping component, avoiding positional deviation of the lower clamping component during movement and ensuring the accuracy of the movement of the lower clamping component.

[0011] As a preferred technical solution of this application, the upper clamping mechanism includes a fixed seat fixedly installed on the lower surface of the movable plate. Rotating rods are threaded into both outer walls of the fixed seat. One end of the rotating rod is rotatably connected to an upper clamping member inside the fixed seat. The upper surface of the upper clamping member is in contact with the lower surface of the fixed seat. A knob is fixedly connected to the other end of the rotating rod.

[0012] By adopting the above technical solution, when the knob is turned, the rotating rod will move forward and backward along the thread direction, thereby pushing the upper clamping parts inside the fixed seat to move synchronously, thus changing the distance between the two upper clamping parts to clamp steel bars of different diameters to be tested.

[0013] As a preferred technical solution of this application, the centers of the positioning hole, the lower clamping mechanism, the moving plate and the upper clamping mechanism are all located on the same vertical central axis.

[0014] By adopting the above technical solutions, we can ensure the axial consistency of the force during the rebar inspection process, reduce additional stress interference, and improve the accuracy and reliability of the inspection data.

[0015] As a preferred technical solution of this application, the camera observation mechanism includes a mounting block fixedly installed on the side wall of the mounting frame, a high-definition camera fixedly installed on the top of the mounting block, and a support block fixedly connected to the bottom of the mounting block.

[0016] By adopting the above technical solution, the high-definition camera is fixedly installed on one side of the mounting frame, and the support block plays a role in reinforcement and support. The high-definition camera can be used to observe and record the morphological changes of the steel bars during the stretching process.

[0017] As a preferred technical solution of this application, the controller is electrically connected to the electric telescopic pole, the tension sensor, the infrared rangefinder, the drive motor and the high-definition camera via wires, and a display screen is provided on the front side of the controller.

[0018] By adopting the above technical solution, the controller integrates the control of the electric telescopic pole and the start and stop of the drive motor, and the data detected by the tension sensor, infrared rangefinder and high-definition camera are displayed on the screen on the controller.

[0019] In summary, the beneficial effects of this application are as follows: 1. In this application, the workbench serves as the basic load-bearing structure of the equipment. Positioning holes on its upper surface are used to place the reinforcing bars to be tested. The lower clamping mechanism clamps and fixes the reinforcing bars to the center of the positioning holes, and the upper clamping mechanism clamps and fixes the upper end of the reinforcing bars, thus firmly clamping them and preventing slippage during testing, ensuring the effectiveness of the applied tension. An electric telescopic rod extends and retracts, causing the moving plate to move up and down, thereby applying tension to the reinforcing bars through the upper clamping mechanism. A tension sensor and a tension detection rope connect the moving plate to the workbench, allowing real-time monitoring of the tension on the reinforcing bars. An infrared rangefinder measures the displacement of the moving plate, thus determining the amount of tension in the reinforcing bars. A camera observation mechanism observes the morphological changes of the reinforcing bars during the tensioning process. This testing equipment has a relatively compact structure, requires no laboratory environment, can be carried to the construction site, and integrates control and data display through a controller, simplifying the operation process and reducing the skill requirements for operators.

[0020] 2. In this application, the threaded rod is driven to rotate by a drive motor, causing the two lower clamping parts to move towards each other along the guide rod from both sides of the steel bar, thereby clamping and fixing the steel bar at the center of the positioning hole; by rotating the knob, the rotating rod moves forward and backward along the thread direction, thereby pushing the upper clamping parts inside the fixing seat to move synchronously, thereby changing the distance between the two upper clamping parts to clamp steel bars of different diameters to be tested. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a partial structural diagram of this application; Figure 3 This is a schematic diagram of the composition of the lower clamping mechanism of this application; Figure 4 This is a schematic diagram of the composition of the camera observation mechanism of this application.

[0022] Explanation of reference numerals in the attached figures: 1. Workbench; 2. Positioning hole; 3. Lower clamping mechanism; 31. Positioning frame; 32. Threaded rod; 33. Drive motor; 34. Guide rod; 35. Lower clamping component; 4. Mounting frame; 5. Electric telescopic rod; 6. Moving plate; 7. Upper clamping mechanism; 71. Fixed base; 72. Rotating rod; 73. Upper clamping component; 74. Knob; 8. Tension sensor; 9. Tension detection rope; 10. Infrared rangefinder; 11. Controller; 12. Camera observation mechanism; 121. Mounting block; 122. High-definition camera; 123. Support block. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this application easy to understand, the following describes this application in conjunction with specific implementation methods.

[0024] like Figure 1 - Figure 4 As shown, this embodiment provides a rebar strength testing device, including a workbench 1. A positioning hole 2 is provided on the upper surface of the workbench 1. A lower clamping mechanism 3 is disposed above the positioning hole 2. A mounting frame 4 is fixedly installed on the upper surface of the workbench 1. An electric telescopic rod 5 is fixedly installed on the top of the mounting frame 4. A moving plate 6 is fixedly connected to the lower end of the electric telescopic rod 5. An upper clamping mechanism 7 is fixedly installed on the lower surface of the moving plate 6, and the rebar to be tested is clamped between the upper clamping mechanism 7 and the lower clamping mechanism 3. A tension sensor 8 and an infrared rangefinder 10 are fixedly installed on both sides of the lower surface of the moving plate 6, respectively. A tension detection rope 9 is fixedly connected to the lower end of the tension sensor 8, and the lower end of the tension detection rope 9 is fixedly connected to the workbench 1. A camera observation device is fixedly installed on the inner wall of the mounting frame 4. The device consists of a controller 11 fixedly installed on the front side of the workbench 1. During use, the lower clamping mechanism 3 and the upper clamping mechanism 7 clamp and fix the reinforcing bars. The electric telescopic rod 5 extends and retracts, which drives the moving plate 6 to move up and down. The upper clamping mechanism 7 then applies tension to the reinforcing bars. The moving plate 6 and the workbench 1 are connected by a tension sensor 8 and a tension detection rope 9, which can monitor the magnitude of the tension on the reinforcing bars in real time. An infrared rangefinder 10 is used to measure the displacement of the moving plate 6, thereby obtaining the amount of tension of the reinforcing bars. The camera observation mechanism 12 is used to observe the morphological changes of the reinforcing bars during the tensioning process. This detection device has a relatively compact structure, does not require a laboratory environment, and can be carried to the construction site. Furthermore, the controller 11 integrates control and data display, simplifying the operation process and reducing the skill requirements for operators.

[0025] In this embodiment, as Figure 1 and 3 As shown, the lower clamping mechanism 3 includes a positioning frame 31 fixedly installed on the upper surface of the workbench 1. A threaded rod 32 is rotatably connected inside the positioning frame 31. A drive motor 33 for driving the threaded rod 32 to rotate is fixedly installed on the side wall of the positioning frame 31. The outer wall of the threaded rod 32 is provided with connecting threads in opposite directions on both sides of the positioning hole 2. Two lower clamping parts 35 are threadedly sleeved on the outer wall of the threaded rod 32. In use, the threaded rod 32 is driven to rotate by the drive motor 33, causing the two lower clamping parts 35 to move towards each other from both sides of the steel bar, thereby clamping and fixing the steel bar at the center position of the positioning hole 2.

[0026] In this embodiment, as Figure 3As shown, a guide rod 34 is fixedly connected to the inside of the positioning frame 31 on one side of the threaded rod 32. Both lower clamping parts 35 are slidably sleeved on the outer wall of the guide rod 34. During use, the guide rod 34 provides a moving path for the lower clamping parts 35, preventing the lower clamping parts 35 from shifting position during movement and ensuring the accuracy of the movement of the lower clamping parts 35.

[0027] In this embodiment, as Figure 1 and 2 As shown, the upper clamping mechanism 7 includes a fixed seat 71 fixedly installed on the lower surface of the movable plate 6. Rotating rods 72 are threaded into the outer walls of both sides of the fixed seat 71. One end of the rotating rod 72 is rotatably connected to an upper clamping member 73 inside the fixed seat 71. The upper surface of the upper clamping member 73 is in contact with the lower surface of the fixed seat 71. The other end of the rotating rod 72 is fixedly connected to a knob 74. In use, when the knob 74 is rotated, the rotating rod 72 will move forward and backward along the thread direction, thereby pushing the upper clamping member 73 inside the fixed seat 71 to move synchronously, thereby changing the distance between the two upper clamping members 73 to clamp steel bars of different diameters to be tested.

[0028] In this embodiment, as Figure 1 As shown, the centers of positioning hole 2, lower clamping mechanism 3, moving plate 6 and upper clamping mechanism 7 are all on the same vertical central axis. During use, this ensures the axial consistency of the force during the rebar inspection process, reduces additional stress interference, and improves the accuracy and reliability of the inspection data.

[0029] In this embodiment, as Figure 1 and 4 As shown, the camera observation mechanism 12 includes a mounting block 121 fixedly installed on the side wall of the mounting frame 4. A high-definition camera 122 is fixedly installed on the top of the mounting block 121, and a support block 123 is fixedly connected to the bottom of the mounting block 121. In use, the high-definition camera 122 is fixedly installed on one side of the mounting frame 4 through the mounting frame 4, and the support block 123 plays a role in reinforcement and support. The high-definition camera 122 is used to observe and record the morphological changes of the steel bar during the stretching process.

[0030] In this embodiment, as Figures 1-4 As shown, the controller 11 is electrically connected to the electric telescopic pole 5, the tension sensor 8, the infrared rangefinder 10, the drive motor 33, and the high-definition camera 122 via wires. A display screen is provided on the front of the controller 11. In use, the controller 11 integrates the control of the start and stop of the electric telescopic pole 5 and the drive motor 33. The data detected by the tension sensor 8, the infrared rangefinder 10, and the high-definition camera 122 are displayed on the display screen on the controller 11.

[0031] The working principle of this application is as follows: When using the steel bar strength testing equipment of this application, the operator first places the steel bar inside the positioning hole 2, then starts the drive motor 33 to drive the threaded rod 32 to rotate, so that the two lower clamping parts 35 move closer to the steel bar along the guide rod 34 to fix it. Then, the knob 74 is turned to make the rotating rod 72 move forward and backward along the thread direction, so that the two upper clamping parts 73 fix the upper end of the steel bar. Then, the electric telescopic rod 5 is started to drive the moving plate 6 to move upward, applying tension to the steel bar. During this process, the tension sensor 8 monitors the magnitude of the tension on the steel bar in real time, the infrared rangefinder 10 is used to measure the displacement of the moving plate 6, thereby obtaining the elongation of the steel bar, and the high-definition camera 122 is used to observe the morphological changes of the steel bar during the stretching process. When the steel bar breaks or reaches the preset tension, the equipment stops running, and the controller 11 automatically calculates and outputs the strength index of the steel bar according to the recorded peak tension and corresponding elongation.

[0032] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

Claims

1. A steel bar strength testing device, comprising a workbench (1), characterized in that, The upper surface of the workbench (1) is provided with a positioning hole (2), and a lower clamping mechanism (3) is provided above the positioning hole (2). A mounting frame (4) is fixedly installed on the upper surface of the workbench (1). An electric telescopic rod (5) is fixedly installed on the top of the mounting frame (4). A moving plate (6) is fixedly connected to the lower end of the electric telescopic rod (5). An upper clamping mechanism (7) is fixedly installed on the lower surface of the moving plate (6). The steel bar to be tested is clamped between the upper clamping mechanism (7) and the lower clamping mechanism (3). A tension sensor (8) and an infrared rangefinder (10) are fixedly installed on the lower surface of the moving plate (6) on both sides of the upper clamping mechanism (7). A tension detection rope (9) is fixedly connected to the lower end of the tension sensor (8). The lower end of the tension detection rope (9) is fixedly connected to the workbench (1). A camera observation mechanism (12) is fixedly installed on the inner wall of the mounting frame (4). A controller (11) is fixedly installed on the front side of the workbench (1).

2. The steel reinforcement strength testing device according to claim 1, characterized in that, The lower clamping mechanism (3) includes a positioning frame (31) fixedly installed on the upper surface of the workbench (1). The positioning frame (31) is rotatably connected to a threaded rod (32). A drive motor (33) for driving the threaded rod (32) to rotate is fixedly installed on the side wall of the positioning frame (31). The outer wall of the threaded rod (32) is provided with connecting threads in opposite directions on both sides of the positioning hole (2). Two lower clamping parts (35) are threaded onto the outer wall of the threaded rod (32).

3. The steel reinforcement strength testing equipment according to claim 2, characterized in that, The positioning frame (31) has a guide rod (34) fixedly connected to one side of the threaded rod (32) inside, and the two lower clamping parts (35) are slidably sleeved on the outer wall of the guide rod (34).

4. The steel reinforcement strength testing device according to claim 1, characterized in that, The upper clamping mechanism (7) includes a fixed seat (71) fixedly installed on the lower surface of the movable plate (6). Rotating rods (72) are threaded into both outer walls of the fixed seat (71). One end of the rotating rod (72) is rotatably connected to an upper clamping member (73) inside the fixed seat (71). The upper surface of the upper clamping member (73) is in contact with the lower surface of the fixed seat (71). A knob (74) is fixedly connected to the other end of the rotating rod (72).

5. The steel reinforcement strength testing device according to claim 1, characterized in that, The centers of the positioning hole (2), the lower clamping mechanism (3), the moving plate (6), and the upper clamping mechanism (7) are all located on the same vertical central axis.

6. The steel reinforcement strength testing device according to claim 2, characterized in that, The camera observation mechanism (12) includes a mounting block (121) fixedly installed on the side wall of the mounting frame (4). A high-definition camera (122) is fixedly installed on the top of the mounting block (121), and a support block (123) is fixedly connected to the bottom of the mounting block (121).

7. The steel reinforcement strength testing device according to claim 6, characterized in that, The controller (11) is electrically connected to the electric telescopic rod (5), the tension sensor (8), the infrared rangefinder (10), the drive motor (33), and the high-definition camera (122) via wires. A display screen is provided on the front side of the controller (11).

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