Repeated bending tester

Abstract

The utility model provides a repeated bending testing machine, which relates to the technical field of testing equipment and comprises an equipment main body, the upper surface of the equipment main body is provided with a mounting hole, the inner wall surface of the mounting hole is fixedly connected with a bracket, and the lower surface of the bracket is rotatably connected with a force guide plate through a rotating shaft. When the metal wire bending detection device is used, a metal wire needing to be subjected to bending detection is placed in the two mounting bases, then the lead screw is rotated, the supporting plate provides supporting force for the lead screw, the adjusting block moves upwards under the action of threads, the adjusting block pulls the two adjusting rods to rotate and move, the two adjusting rods pull the two push rods to move in the linear bearings, and the metal wire is bent and detected. The two push rods push the two clamping blocks to get close synchronously to clamp and position the metal wire, the structure is simple, the two clamping blocks move synchronously when fixing the metal wire, positioning of the metal wire is achieved, operation is convenient, the fixing efficiency of the metal wire is effectively improved, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a repeated bending testing machine. Background Art

[0002] The repeated bending tester is a device used to test the fatigue performance of materials under alternating loads. In this test, the material or part will be subjected to repeated bending loads to simulate fatigue failure under actual use conditions. When testing metal wires, adjust the fixture, use the fixture to clamp the metal wire, clamp the metal wire firmly, then adjust and calibrate the fixture, and test the metal wire after the calibration is completed.

[0003] However, in the prior art, a clamp is used to clamp the metal wire, the metal wire is firmly clamped, and then the clamp is adjusted and calibrated. After the calibration is completed, the metal wire is tested. The operation is cumbersome, the fixing and positioning of the metal wire is inefficient, and a lot of time and manpower are required, which seriously affects the user experience. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems in the prior art of using a clamp to clamp a metal wire, firmly clamp the metal wire, then adjust and calibrate the clamp, and test the metal wire after the calibration is completed, which is cumbersome to operate, and the fixing and positioning efficiency of the metal wire is low, requiring a lot of time and manpower, which seriously affects the user experience, and a repeated bending tester is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a repeated bending testing machine, including an equipment body, the upper surface of the equipment body is provided with a mounting hole, the inner wall surface of the mounting hole is fixedly connected with a bracket, the lower surface of the bracket is rotatably connected with a force guide plate through a rotating shaft, the upper surface of the equipment body is provided with two mounting bases, the outer surface of one of the mounting bases is fixedly connected to a side surface of the force guide plate, the inner wall surface of the mounting hole is fixedly connected with a support rod, one end of the support rod is fixedly connected to a motor, the output end of the motor is fixedly connected to a driving gear, and the lower surface of the force guide plate is fixedly connected to a driven gear, the outer surfaces of the two mounting bases are embedded with two linear bearings, the inner wall surfaces of the four linear bearings are slidably embedded with push rods, one end of the four push rods are fixedly connected with a clamping block, the outer surfaces of the four push rods away from the mounting base are rotatably connected with adjusting rods through a rotating shaft, and the two adjusting rods form a group.

[0006] Furthermore, one end of the two groups of adjusting rods are rotatably connected to an adjusting block via a rotating shaft, and the outer surfaces of the two mounting bases are fixedly connected to a supporting plate.

[0007] Furthermore, the upper surfaces of the two support plates are rotatably connected to two screw rods via bearings, and the outer surfaces of the two screw rods are threadedly connected to the insides of the two adjustment blocks.

[0008] Furthermore, the four clamping blocks are in the shape of a right-angled trapezoid, two clamping blocks form a group, and the clamping blocks in each group are arranged in a mirror image.

[0009] Furthermore, the opposing surfaces of the two groups of clamping blocks are each provided with a plurality of grooves, and the plurality of grooves are equidistantly distributed.

[0010] Furthermore, the upper ends of the two screw rods are fixedly connected with rotating wheels.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, when in use, the metal wire that needs to be bent and tested is placed inside the two mounting bases, and then the lead screw is rotated, and the support plate provides support force for the lead screw, so that the adjusting block moves upward under the action of the thread, and the adjusting block pulls the two adjusting rods to rotate and move, so that the two adjusting rods pull the two push rods to move inside the linear bearing, and the two push rods push the two clamping blocks to approach synchronously, and the metal wire is clamped and positioned. The structure is simple, and the two clamping blocks move synchronously when fixing the metal wire, so as to realize the positioning of the metal wire, and the operation is convenient, which effectively improves the fixing efficiency of the metal wire and improves the use experience.

[0013] 2. In the utility model, when in use, the inclined surfaces of the four right-angled trapezoidal clamping blocks fit with the metal wire and form an angle with the metal wire, providing downward pressure for the metal wire to prevent the metal wire from slipping out and falling off. The structure is stable and the fixing effect is good. Multiple equidistantly distributed grooves evenly increase the friction between the clamping blocks and the metal wire to prevent the metal wire from sliding. The screw rod is rotated by the rotating wheel to increase the force arm, saving time and effort and improving the use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional structural schematic diagram of a repeated bending test machine provided by the utility model;

[0015] Figure 2 A schematic diagram of the three-dimensional structure of a mounting base of a repeated bending test machine provided by the utility model;

[0016] Figure 3 A schematic diagram of a cross-sectional three-dimensional structure of a mounting base of a repeated bending test machine provided by the utility model;

[0017] Figure 4 The utility model provides a schematic bottom-up stereoscopic structural diagram of a repeated bending test machine equipment body.

[0018] Legend: 1. Equipment body; 2. Mounting hole; 3. Bracket; 4. Mounting base; 5. Linear bearing; 6. Push rod; 7. Clamp block; 8. Groove; 9. Support plate; 10. Screw rod; 11. Adjustment block; 12. Adjustment rod; 13. Force guide plate; 14. Rotating wheel; 15. Driven gear; 16. Driving gear; 17. Motor; 18. Support rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] like Figure 1-4 As shown, the utility model provides a technical solution: a repeated bending test machine, including an equipment body 1, an installation hole 2 is opened on the upper surface of the equipment body 1, a bracket 3 is fixedly connected to the inner wall surface of the installation hole 2, and a force guide plate 13 is rotatably connected to the lower surface of the bracket 3 through a rotating shaft. Two mounting bases 4 are arranged on the upper surface of the equipment body 1, and the outer surface of one mounting base 4 is fixedly connected to a side surface of the force guide plate 13, a support rod 18 is fixedly connected to the inner wall surface of the installation hole 2, one end of the support rod 18 is fixedly connected to a motor 17, an output end of the motor 17 is fixedly connected to a driving gear 16, and the lower surface of the force guide plate 13 is fixedly connected to a A movable gear 15, two linear bearings 5 ​​are embedded in the outer surfaces of the two mounting bases 4, push rods 6 are slidably embedded in the inner wall surfaces of the four linear bearings 5, one end of the four push rods 6 is fixedly connected to a clamping block 7, the outer surface of the four push rods 6 away from the mounting base 4 is rotatably connected to an adjusting rod 12 through a rotating shaft, two adjusting rods 12 form a group, one end of the two groups of adjusting rods 12 is rotatably connected to an adjusting block 11 through a rotating shaft, the outer surfaces of the two mounting bases 4 are fixedly connected to a support plate 9, the upper surfaces of the two support plates 9 are rotatably connected to two screw rods 10 through bearings, and the outer surfaces of the two screw rods 10 are threadedly connected to the inside of the two adjusting blocks 11.

[0022] In this embodiment, when in use, the metal wire that needs to be bent is placed inside the two mounting bases 4, and then the screw 10 is rotated. The support plate 9 provides support force for the screw 10, so that the adjustment block 11 moves upward under the action of the thread, and the adjustment block 11 pulls the two adjustment rods 12 to rotate and move, so that the two adjustment rods 12 pull the two push rods 6 to move inside the linear bearing 5, and the two push rods 6 push the two clamping blocks 7 to move synchronously, clamping the metal wire in place. The structure is simple, and the two clamping blocks 7 move synchronously when fixing the metal wire to achieve positioning of the metal wire. The operation is convenient, and the fixing efficiency of the metal wire is effectively improved, thereby improving the user experience.

[0023] like Figure 1-4 As shown, the four clamping blocks 7 are in the shape of a right-angled trapezoid, two clamping blocks 7 form a group, each group of clamping blocks 7 is arranged in a mirror image, and the relative surfaces of the two groups of clamping blocks 7 are provided with multiple grooves 8, and the multiple grooves 8 are equidistantly distributed. The upper ends of the two screw rods 10 are fixedly connected to the rotating wheels 14.

[0024] In this embodiment, when in use, the inclined surfaces of the four right-angled trapezoidal clamping blocks 7 are in contact with the metal wire and form an angle with the metal wire, thereby providing downward pressure for the metal wire to prevent the metal wire from slipping out and falling off. The structure is stable and the fixing effect is good. A plurality of equidistantly distributed grooves 8 evenly increase the friction between the clamping blocks 7 and the metal wire to prevent the metal wire from slipping. The screw rod 10 is rotated by the rotating wheel 14 to increase the force arm, save time and effort, and improve the user experience.

[0025] Working principle: Figure 1-4 As shown, when in use, the metal wire that needs to be bent and tested is placed inside the two mounting bases 4, and then the lead screw 10 is rotated, and the support plate 9 provides support force for the lead screw 10, so that the adjustment block 11 moves upward under the action of the thread, and the adjustment block 11 pulls the two adjustment rods 12 to rotate and move, so that the two adjustment rods 12 pull the two push rods 6 to move inside the linear bearing 5, and the two push rods 6 push the two clamping blocks 7 to move synchronously, and the metal wire is clamped and positioned. The inclined surfaces of the four right-angled trapezoidal clamping blocks 7 fit the metal wire and form an angle with the metal wire, providing downward pressure for the metal wire to prevent the metal wire from slipping out and falling off. The structure is stable and the fixing effect is good. Multiple equidistantly distributed grooves 8 evenly increase the friction between the clamping block 7 and the metal wire to prevent the metal wire from sliding. The lead screw 10 is rotated by the rotating wheel 14 to increase the force arm.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A repeated bending test machine, comprising a device body (1), characterized in that: The upper surface of the device body (1) is provided with a mounting hole (2), the inner wall surface of the mounting hole (2) is fixedly connected to a bracket (3), the lower surface of the bracket (3) is rotatably connected to a force guide plate (13) via a rotating shaft, the upper surface of the device body (1) is provided with two mounting bases (4), the outer surface of one of the mounting bases (4) is fixedly connected to a side surface of the force guide plate (13), the inner wall surface of the mounting hole (2) is fixedly connected to a support rod (18), one end of the support rod (18) is fixedly connected to a motor (17), and the The output end of the motor (17) is fixedly connected to a driving gear (16), the lower surface of the force guide plate (13) is fixedly connected to a driven gear (15), the outer surfaces of the two mounting bases (4) are each embedded with two linear bearings (5), the inner wall surfaces of the four linear bearings (5) are each slidably embedded with a push rod (6), one end of the four push rods (6) is fixedly connected to a clamping block (7), the outer surfaces of the four push rods (6) away from the mounting base (4) are rotatably connected to an adjusting rod (12) via a rotating shaft, and two adjusting rods (12) form a group.

2. A repeated bending test machine according to claim 1, characterized in that: One end of the two groups of adjustment rods (12) are rotatably connected to the adjustment block (11) via a rotating shaft, and the outer surfaces of the two mounting bases (4) are fixedly connected to a support plate (9).

3. A repeated bending test machine according to claim 2, characterized in that: The upper surfaces of the two support plates (9) are rotatably connected to two screw rods (10) via bearings, and the outer surfaces of the two screw rods (10) are threadedly connected to the insides of the two adjustment blocks (11).

4. A repeated bending test machine according to claim 1, characterized in that: The four clamping blocks (7) are in the shape of a right-angled trapezoid, two clamping blocks (7) form a group, and the clamping blocks (7) in each group are arranged in a mirror image.

5. A repeated bending test machine according to claim 4, characterized in that: The opposing surfaces of the two groups of clamping blocks (7) are each provided with a plurality of grooves (8), and the plurality of grooves (8) are distributed at equal intervals.

6. A repeated bending test machine according to claim 3, characterized in that: The upper ends of the two screw rods (10) are fixedly connected to a rotating wheel (14).

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