Fixing clamp for steel bar bending tester

Abstract

The utility model discloses a fixing clamp for a steel bar bending tester, and relates to the field of steel bar bending testers. The bending testing machine comprises a bending testing machine main body and an abutting assembly, and is characterized in that the abutting assembly comprises a supporting and abutting plate, a sliding groove and an empty groove are formed in one side of the supporting and abutting plate, and a sliding plate is installed on one side of the supporting and abutting plate in a sliding mode through the sliding groove and a sliding block; the sliding plate is installed on one side of the supporting and abutting plate in a sliding mode through the sliding groove and the sliding block, in the bending process, the sliding groove of the supporting and abutting plate is matched with the sliding block, the sliding plate can slide transversely, the friction force between the sliding plate and a steel bar is increased through the rubber patch attached to the surface of the sliding plate, and sliding friction is reduced; and traditional abutting sliding friction between the steel bars and the supporting and abutting plate is converted into sliding connection between the sliding plate and the supporting and abutting plate, and friction damage of the steel bars to the supporting and abutting plate is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of rebar bending testing machines, specifically a fixing clamp for a rebar bending testing machine. Background Technology

[0002] The rebar bending tester is a specialized device used to test the bending performance of rebars. It mainly consists of a frame, workbench, working disc, reducer, clamping device, electrical control box and other components. It has a compact structure, is easy to operate, has a strong load-bearing capacity and runs smoothly. This equipment can accurately perform cold bending test and plane reverse bending test to ensure the safety and reliability of rebars in construction.

[0003] Existing testing machines typically employ two fixed support points and one movable bending support point to support and bend the reinforcing bars during bending tests. However, a problem arises: bending inevitably causes deformation of the reinforcing bars, leading to frictional slippage between the bars and one side of the support plate. Furthermore, the significant pressure between the bars and the support plate, along with their rough contact surface, results in severe frictional damage to the support plate as the number of bars processed increases. This necessitates frequent maintenance and replacement of the support plate, reducing the ease of use of the bending testing machine. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a fixing fixture for a rebar bending test machine to solve the technical problem of frictional slippage between the rebar and the one-sided pressure support plate caused by rebar deformation, which in turn causes serious frictional damage to the pressure support plate.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fixing fixture for a rebar bending tester, comprising a bending tester body and a pressing component, wherein the pressing component includes a supporting pressing plate, one side of the supporting pressing plate is formed with a sliding groove and a hollow groove, and a sliding plate is slidably installed on one side of the supporting pressing plate through the sliding groove and a slider.

[0006] By adopting the above technical solution, the sliding plate can adaptively slide laterally according to the deformation of the steel bar when it bends, which effectively avoids the serious friction damage caused by the relative sliding between the steel bar and the pressure plate in traditional fixing clamps, and greatly extends the service life of the pressure component.

[0007] Furthermore, the side surface of the slider has a "T" shape, and the sliding plate abuts against the processed steel bar.

[0008] By adopting the above technical solution, the sliding stability of the slider in the groove is enhanced. During the steel bar bending test, the sliding plate needs to slide with the deformation of the steel bar. The "T"-shaped structure can effectively prevent the slider from deviating or shaking during the sliding process, thus ensuring the accuracy of the sliding plate.

[0009] Furthermore, a patch is attached to one side surface of the sliding plate, and the patch is made of rubber.

[0010] By adopting the above technical solution, the patch has a large coefficient of friction, which can significantly increase the friction between the sliding plate and the processed steel bar. During the bending process of the steel bar, this increased friction can effectively prevent relative sliding between the sliding plate and the steel bar, and ensure the stable support of the sliding plate for the steel bar.

[0011] Furthermore, a tension spring assembly is elastically connected between the slider and the inner wall of the slot to drive the sliding plate to reset.

[0012] By adopting the above technical solution, the tension spring assembly can automatically drive the sliding plate to reset after the steel bar bending test is completed, eliminating the need for manual adjustment of the sliding plate position, which greatly improves the operating efficiency and reduces errors caused by manual intervention.

[0013] Furthermore, a limiting mechanism for restricting the position of the processed reinforcing bar is provided on one side of the top of the sliding plate. The limiting mechanism includes a mounting frame, on which a feed screw is threadedly connected. A pressure plate is rotatably mounted at the bottom end of the feed screw, and the pressure plate abuts against the processed reinforcing bar.

[0014] By adopting the above technical solution, the feed screw connected by threads on the mounting frame and the pressure plate rotatably mounted at the bottom of the feed screw can accurately limit the position of the processed steel bar. Before the steel bar bending test, the position of the pressure plate can be adjusted by rotating the feed screw according to the specifications and bending requirements of the steel bar to ensure that the steel bar is always in the correct position during the bending process.

[0015] Furthermore, a turntable is rotatably mounted on the top of the bending test machine body. The surface of the turntable has several mounting holes, and movable pins can be inserted into the inner side of the mounting holes. A support block is inserted into the central axis of the turntable. A feeding device is installed on one side of the top surface of the bending test machine body. The turntable is driven to rotate by an external drive motor. The feeding device includes a device body, a handwheel, a lead screw, and the end of the lead screw is rotatably connected to a support pressure plate.

[0016] By adopting the above technical solution, the turntable can quickly position steel bars of different specifications. When changing steel bars of different diameters or shapes for testing, it is only necessary to insert the corresponding movable pin into the appropriate mounting hole to achieve rapid positioning and fixing of the steel bars, which greatly improves the preparation efficiency of the test.

[0017] Furthermore, a CNC panel and a mounting rod are provided on one side of the feeding device, and the mounting rod is rotatably connected to the support pressure plate.

[0018] By adopting the above technical solution, the CNC panel can achieve precise control of the turntable. Operators can precisely adjust the rotation angle and speed of the turntable through the CNC panel according to the test requirements. This precise control can improve the accuracy and stability of the rebar bending test.

[0019] In summary, the present invention has the following main advantages:

[0020] 1. This utility model uses a sliding plate to be slidably installed on one side of the supporting pressure plate by means of a sliding groove and a slider. During the bending process, the sliding groove of the supporting pressure plate cooperates with the slider, so that the sliding plate can slide laterally. The rubber patch on its surface increases the friction with the steel bar and reduces the sliding friction. It transforms the traditional pressing and sliding friction between the steel bar and the supporting pressure plate into a sliding connection between the sliding plate and the supporting pressure plate, which effectively reduces the frictional damage of the steel bar to the supporting pressure plate.

[0021] 2. This utility model, through a limiting mechanism and a threaded connection between the feed screw and the mounting bracket, can achieve precise adjustment of the position of the reinforcing bar. Before the reinforcing bar bending test, the operator can rotate the feed screw according to the specifications of the reinforcing bar and the bending requirements to move the pressure plate to the appropriate position, ensuring that the reinforcing bar is in the correct position when bending, improving the accuracy of the test, and effectively preventing the reinforcing bar from shifting during the bending process. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the pressure-resistant component structure of this utility model;

[0024] Figure 3 This is a side view of the pressure-reducing component of this utility model.

[0025] Figure 4 This is a top view of the structure of this utility model;

[0026] Figure 5 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0027] In the diagram: 1. Main body of the bending testing machine; 2. Turntable; 3. Mounting rod; 4. Feeding device; 5. Pressing assembly; 501. Supporting pressing plate; 502. Slide groove; 503. Empty groove; 504. Sliding plate; 505. Slider; 506. Tension spring assembly; 507. Patch; 6. CNC panel; 7. Limiting mechanism; 701. Mounting bracket; 702. Feed screw; 703. Pressing plate; 8. Support block; 9. Movable pin. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] Example 1:

[0030] A fixing fixture for a rebar bending test machine, such as Figure 1-5 As shown, the bending testing machine includes a main body 1 and a pressing assembly 5. The pressing assembly 5 includes a supporting pressing plate 501. One side of the supporting pressing plate 501 has a sliding groove 502 and a hollow groove 503. A sliding plate 504 is slidably installed on one side of the supporting pressing plate 501 through the sliding groove 502 and the slider 505. This allows the sliding plate 504 to adaptively slide laterally according to the deformation of the steel bar during bending, effectively avoiding the serious frictional damage caused by relative sliding between the steel bar and the pressing plate in traditional fixed clamps. This greatly extends the service life of the pressing assembly 5. At the same time, the sliding plate 504 abuts against the processed steel bar, ensuring the stable support of the clamp on the steel bar during the bending process, ensuring the accuracy and reliability of the bending test, and improving the ease of use and work efficiency of the entire steel bar bending testing machine.

[0031] See Figure 2 , Figure 3 The side surface of the slider 505 has a "T" shape, and the sliding plate 504 abuts against the processed steel bar, which enhances the sliding stability of the slider 505 in the groove 502. During the steel bar bending test, the sliding plate 504 needs to slide with the deformation of the steel bar. The "T" shape can effectively prevent the slider 505 from deviating or shaking during the sliding process, ensuring the accuracy of the sliding plate 504. At the same time, the sliding plate 504 abuts against the processed steel bar, so that the steel bar can be subjected to uniform and stable pressure when bending, which further improves the quality and accuracy of the steel bar bending test.

[0032] See Figure 2 , Figure 3 , Figure 5A patch 507 is attached to one side surface of the sliding plate 504. The patch 507 is made of rubber and has a large coefficient of friction, which can significantly increase the friction between the sliding plate 504 and the processed steel bar. During the bending process of the steel bar, this increased friction can effectively prevent relative sliding between the sliding plate 504 and the steel bar, ensuring the stable support of the sliding plate 504 for the steel bar. At the same time, the rubber material also has a certain degree of elasticity. The rubber patch 507 can reduce the noise between the sliding plate 504 and the steel bar and improve the test environment.

[0033] See Figure 2 , Figure 3 A tension spring assembly 506 is elastically connected between the slider 505 and the inner wall of the slot 503 to drive the sliding plate 504 to reset. After the steel bar bending test is completed, the tension spring assembly 506 can automatically drive the sliding plate 504 to reset without manual adjustment of the position of the sliding plate 504, which greatly improves the operating efficiency and reduces the error caused by manual intervention. At the same time, the elasticity of the tension spring assembly 506 can ensure the stability of the sliding plate 504 during the reset process and avoid damage to the pressure component 5 due to improper reset.

[0034] Example 2:

[0035] See Figure 1 , Figure 5 A limiting mechanism 7 for restricting the position of the processed reinforcing bar is provided on one side of the top of the sliding plate 504. The limiting mechanism 7 includes a mounting frame 701, on which a feed screw 702 is threadedly connected. A pressure plate 703 is rotatably mounted on the bottom end of the feed screw 702. The pressure plate 703 abuts against the processed reinforcing bar. The feed screw 702 threadedly connected to the mounting frame 701 and the pressure plate 703 rotatably mounted on the bottom end of the feed screw 702 can accurately restrict the position of the processed reinforcing bar. Before the reinforcing bar bending test, the position of the pressure plate 703 can be adjusted by rotating the feed screw 702 according to the specifications and bending requirements of the reinforcing bar to ensure that the reinforcing bar is always in the correct position during the bending process. At the same time, the pressure plate 703 abuts against the processed reinforcing bar, further enhancing the fixing effect of the clamp on the reinforcing bar, preventing the reinforcing bar from shifting or shaking during the bending process, improving the accuracy and stability of the reinforcing bar bending test, and ensuring the reliability of the test results.

[0036] See Figure 1 , Figure 4A turntable 2 is rotatably mounted on the top of the main body 1 of the bending testing machine. Several mounting holes are opened on the surface of the turntable 2, and movable pins 9 can be inserted into the inner side of the mounting holes. A support block 8 is inserted into the central axis of the turntable 2. A feeding device 4 is installed on one side of the top surface of the main body 1 of the bending testing machine. The turntable 2 is driven to rotate by an external drive motor. The feeding device 4 includes a device body, a handwheel, a lead screw, and the end of the lead screw is rotatably connected to the support pressure plate 501, so that the turntable 2 can quickly position steel bars of different specifications. When changing steel bars of different diameters or shapes for testing, it is only necessary to insert the corresponding movable pin 9 into the appropriate mounting hole to achieve rapid positioning and fixing of the steel bars, which greatly improves the preparation efficiency of the test. At the same time, the turntable 2 is driven to rotate by an external drive motor. With the support block 8 inserted into the central axis and the feeding device 4 driving the support pressure plate 501 to move, stable bending operation of steel bars can be achieved. This automated setting reduces the complexity of manual operation and improves the accuracy and repeatability of the test.

[0037] See Figure 1 , Figure 4 A CNC panel 6 and a mounting rod 3 are provided on one side of the feeding device 4. The mounting rod 3 is rotatably connected to the support pressure plate 501. The CNC panel 6 can achieve precise control of the turntable 2. The operator can precisely adjust the rotation angle and speed of the turntable 2 through the CNC panel 6 according to the test requirements. This precise control can improve the accuracy and stability of the rebar bending test. At the same time, the mounting rod 3 is rotatably connected to the support pressure plate 501, providing stable support and rotation axis for the support pressure plate 501, ensuring the smoothness and reliability of the feeding device 4 when driving the support pressure plate 501 to move.

[0038] The implementation principle of this embodiment is as follows: First, the feeding device 4 drives the support pressure plate 501 to move its position until the processing sliding plate 504 abuts against the reinforcing bar. Then, multiple mounting holes on the turntable 2 allow for the insertion of movable pins 9 to quickly position reinforcing bars of different specifications. Afterward, the turntable 2 is driven to rotate by an external drive motor, simultaneously cooperating with the support block 8 inserted at the central axis and the pressure assembly 5 on one side to achieve stable bending of the reinforcing bar. During the gradual bending process, the sliding groove 502 on one side of the support pressure plate 501 cooperates with the slider 505, allowing the sliding plate 504 to slide laterally. Furthermore, utilizing the sliding... Rubber patches 507 are applied to the surface of the sliding plate 504 to increase the friction between the sliding plate 504 and the reinforcing bar, thereby reducing the sliding friction between the sliding plate 504 and the reinforcing bar. During the bending process of the reinforcing bar, the traditional sliding friction between the reinforcing bar and the supporting pressure plate 501 is improved by the sliding connection of the slider 505 and the groove 502 to the sliding connection between the sliding plate 504 and the supporting pressure plate 501. Since the sliding between the sliding plate 504 and the supporting pressure plate 501 through the slider 505 and the groove 502 is a smooth sliding, the coefficient of friction is relatively small, thus effectively reducing the frictional damage of the reinforcing bar to the supporting pressure plate 501.

[0039] The tension spring assembly 506 between the slider 505 and the inner wall of the slot 503 automatically drives the sliding plate to reset after the steel bar is bent. In addition, the limiting mechanism 7 at the top of the sliding plate 504 is connected to the mounting bracket 701 by the feed screw 702, so that the pressure plate 703 precisely limits the position of the steel bar and avoids the steel bar from shifting during the bending process.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A fixing clamp for a steel bar bending tester, comprising a bending tester main body (1), a pressing assembly (5), characterized in that: The pressing assembly (5) comprises a supporting pressing plate (501), one side of the supporting pressing plate (501) is formed with a sliding groove (502) and a hollow groove (503), and one side of the supporting pressing plate (501) is slidably provided with a sliding plate (504) through the sliding groove (502) and a sliding block (505).

2. The fixing jig for a steel bar bending tester according to claim 1, characterized in that: The lateral surface of the sliding block (505) is in a T-shaped structure, and the sliding plate (504) abuts against the processed reinforcing steel bar.

3. The fixing jig for a steel bar bending tester according to claim 1, characterized in that: The sliding plate (504) is attached with a patch (507) on one side surface, and the patch (507) is made of rubber.

4. The fixing jig for a steel bar bending tester according to claim 1, characterized in that: The sliding block (505) is elastically connected with a tension spring set (506) between the inner wall of the hollow groove (503), so as to drive the sliding plate (504) to reset.

5. The fixing jig for a steel bar bending tester according to claim 1, characterized in that: The top side of the sliding plate (504) is provided with a limiting mechanism (7) for limiting the position of the processed reinforcing steel bar, the limiting mechanism (7) comprises a mounting frame (701), a feed screw (702) is threadedly connected to the mounting frame (701), a pressing plate (703) is rotatably installed at the bottom end of the feed screw (702), and the pressing plate (703) abuts against the processed reinforcing steel bar.

6. The fixing jig for a steel bar bending tester according to claim 1, characterized in that: The top of the bending tester main body (1) is rotatably provided with a rotating disc (2), a plurality of mounting holes are formed in the surface of the rotating disc (2), the inner side of the mounting hole is provided with a movable pin rod (9), a supporting block (8) is inserted into the central axis of the rotating disc (2), a feeding device (4) is installed on one side of the top surface of the bending tester main body (1), the rotating disc (2) is driven to rotate by an external driving motor, and the feeding device (4) comprises a device main body, a hand wheel, a screw rod, and a rotating connection between the end of the screw rod and the supporting pressing plate (501).

7. The fixing jig for a steel bar bending tester according to claim 6, characterized in that: One side of the feeding device (4) is provided with a numerical control panel (6) and a mounting rod (3), and the mounting rod (3) is rotatably connected with the supporting pressing plate (501).

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