Monorail bidirectional three-point bending test bench
By designing a single-track bidirectional structure and pressure sensor system on the three-point bending test bench, the problem of detecting material shaking when under stress is solved, the measurement accuracy is improved and the operator is reminded to adjust the clamping distance to ensure the reliability of the experimental data.
Patent Information
- Application Number
- CN202420756854.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-12
AI Technical Summary
During the testing process, the existing three-point bending test bench shakes left and right due to the action of the measured substance under the force hammer, which affects the accuracy of the measurement results.
A single-track bidirectional three-point bending test bench was designed. By setting a threaded rod and a clamp on the support frame, pressure sensors and warning lights are installed between the clamps to ensure that the detection material is firmly clamped when under stress, and through the spring and sliding plate The mechanism monitors the clamping force in real time to prevent it from being too tight.
It effectively avoids the detection material shaking left and right due to the action of the stress hammer, improves the accuracy of the measurement results, and reminds the operator to adjust the clamping distance through warning lights to ensure the reliability of the experimental data.
Smart Images
Figure CN222232234U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of three-point bending test benches, in particular to a single-track bidirectional three-point bending test bench. Background Art
[0002] The three-point bending test is a test method for detecting the material's ability to withstand bending plastic deformation. The three-point bending test is usually completed on a three-point bending testing machine. The "force-displacement curve" generated during the test is the key reference data for verifying whether the product material is qualified. The accuracy of the data in the test is particularly important, and the accuracy of the test data is closely related to the stress and deformation state of the specimen during the test.
[0003] Most of the current three-point bending test benches place the material to be tested on a support first, then start the force hammer to move the force hammer downward to squeeze the material to be tested. During the test, the material to be tested shakes left and right due to the action of the force hammer, thus affecting the accuracy of the measurement results.
[0004] To this end, we propose a single-track bidirectional three-point bending test bench. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes a single-track bidirectional three-point bending test bench.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A single-track bidirectional three-point bending test bench comprises a workbench, a support frame is arranged at the upper end of the workbench, connecting plates are slidably installed at both ends of the support frame, a threaded rod is screwed and connected to a surface of one side of the connecting plate, the threaded rod is extended to the outside of the connecting plate, a steering rudder is fixedly installed at one end of the threaded rod, a splint is fixedly installed at the end of the threaded rod away from the steering rudder, and a detection material is arranged between the two splints.
[0008] As a further solution of the utility model: a warning light is fixedly installed on the upper surface of the clamping plate, a sliding vertical plate is slidably connected to the surface of one side of the clamping plate, and a sliding vertical plate is fixedly connected to the first vertical plate through a connecting rod on the surface of one side of the sliding vertical plate.
[0009] As a further solution of the utility model: the first vertical plate is connected to the second vertical plate through a spring, a sliding plate is fixedly installed on the surface of the first vertical plate close to the second vertical plate, and the sliding plate extends to the outside of the second vertical plate.
[0010] As a further solution of the utility model: the sliding plate is slidably connected to the second vertical plate, a pressure sensor is fixedly installed on the inner wall of the clamping plate, and the pressure sensor is connected to the warning light electrical signal.
[0011] As a further solution of the utility model: at least two driving devices are fixedly installed inside the support frame, a No. 2 threaded rod is fixedly installed at the output end of the driving device, the No. 2 threaded rod is threadedly connected to the connecting plate, and a guide rod is slidably connected to the surface of one side of the connecting plate.
[0012] As a further solution of the utility model: a slide rail is fixedly installed on the upper part of the workbench, at least two sliding blocks are slidably connected inside the slide rail, the sliding blocks are fixedly installed on the support frame, and a displacement scale is fixedly installed on one side surface of the slide rail.
[0013] As a further solution of the utility model: a support plate is fixedly installed on the upper surface of the workbench, an electric telescopic rod is fixedly installed on one side surface of the support plate, and a force hammer is fixedly installed on one end of the electric telescopic rod away from the support plate.
[0014] Compared with the prior art, the utility model provides a single-track bidirectional three-point bending test bench, which has the following beneficial effects:
[0015] 1. In the utility model, the staff places the test material on the support frame, and then manually rotates the steering wheel. A No. 1 threaded rod is fixedly installed by setting the steering wheel, so that the No. 1 threaded rod is driven to rotate when the steering wheel rotates. A clamping plate is fixedly installed on the end of the No. 1 threaded rod away from the steering wheel, and the No. 1 threaded rod is threadedly connected with the connecting plate, so that the No. 1 threaded rod drives the clamping plate to move laterally when it rotates, so that the two clamping plates can firmly clamp the test material placed on the support frame to avoid shaking left and right due to the action of the force hammer, thereby affecting the accuracy of the measurement result.
[0016] 2. In the utility model, when the clamp clamps the test material, the sliding vertical plate slides toward the inside of the clamp, thereby driving the No. 1 vertical plate to slide. When the No. 1 vertical plate slides, the spring is in an extruded state, and the sliding plate slides. When the sliding plate slides to the pressure sensor, the value of the pressure sensor changes, thereby sending an electrical signal to the warning light, causing the warning light to flash, reminding the staff that the clamping of the clamp too tightly will affect the experimental data, and the distance between the two clamps needs to be enlarged.
[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1This is a schematic diagram of the overall structure of a single-track bidirectional three-point bending test bench proposed by the utility model;
[0019] Figure 2 This is a schematic diagram of the support frame structure of a single-track bidirectional three-point bending test bench proposed by the utility model;
[0020] Figure 3 This is a schematic diagram of the interior of a support frame of a single-track bidirectional three-point bending test bench proposed by the utility model;
[0021] Figure 4 The utility model provides a schematic plan view of the internal structure of a sliding plate of a single-track bidirectional three-point bending test bench.
[0022] In the figure: 1. workbench; 2. slide rail; 3. displacement scale; 4. support frame; 5. sliding block; 7. connecting plate; 8. No. 2 threaded rod; 9. guide rod; 10. driving device; 11. clamping plate; 12. sliding vertical plate; 13. No. 1 threaded rod; 1301, steering wheel; 14. connecting rod; 15. No. 1 vertical plate; 16. spring; 17. No. 2 vertical plate; 1701, sliding plate; 18. pressure sensor; 19. warning light; 20. support plate; 21. electric telescopic rod; 22. hammer; 23. testing material. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0025] Example 1
[0026] A single-track bidirectional three-point bending test bench, such as Figure 1-Figure 4As shown, the workbench 1 includes a support frame 4 at the upper end of the workbench 1, and connecting plates 7 are slidably installed at both ends of the support frame 4. A threaded rod 13 is screwed on one side of the connecting plate 7, and the threaded rod 13 extends to the outside of the connecting plate 7. A steering rudder 1301 is fixedly installed at one end of the threaded rod 13, and a clamping plate 11 is fixedly installed at the end of the threaded rod 13 away from the steering rudder 1301. A testing material 23 is arranged between the two clamping plates 11. The staff puts the testing material 23 on the support frame 4, and then manually rotates the steering rudder 1301. By setting the steering rudder 13 01 is fixedly installed with a No. 1 threaded rod 13, so that when the steering 1301 rotates, the No. 1 threaded rod 13 is driven to rotate. By setting the end of the No. 1 threaded rod 13 away from the steering 1301 is fixedly installed with a clamping plate 11, and the No. 1 threaded rod 13 is threadedly connected with the connecting plate 7, so that when the No. 1 threaded rod 13 rotates, the clamping plate 11 is driven to move laterally, so that the two clamping plates 11 can firmly clamp the test material 23 placed on the support frame 4, avoiding left and right shaking due to the action of the force hammer 22, thereby affecting the accuracy of the measurement result.
[0027] like Figure 1-Figure 4As shown, a warning light 19 is fixedly installed on the upper surface of the splint 11, a sliding vertical plate 12 is slidably connected to the surface of one side of the splint 11, a surface of one side of the sliding vertical plate 12 is fixedly connected to the first vertical plate 15 through a connecting rod 14, the first vertical plate 15 is connected to the second vertical plate 17 through a spring 16, a sliding plate 1701 is fixedly installed on the surface of the first vertical plate 15 close to the second vertical plate 17, the sliding plate 1701 extends to the outside of the second vertical plate 17, the sliding plate 1701 is slidably connected to the second vertical plate 17, a pressure sensor 18 is fixedly installed on the inner wall of the splint 11, and the pressure sensor 18 is electrically connected to the warning light 19, by arranging a sliding vertical plate 12 to be slidably installed on the surface of one side of the splint 11, when the splint 11 clamps the detection material 23, the sliding vertical plate 12 slides toward the inside of the splint 11, and by arranging a surface of one side of the sliding vertical plate 12 to be fixedly connected to the first vertical plate 15 through a connecting rod 14, so that when the sliding vertical plate 12 is When sliding, it drives the No. 1 vertical plate 15 to slide. The No. 1 vertical plate 15 is connected to the No. 2 vertical plate 17 through a spring 16, and a sliding plate 1701 is fixedly installed on the surface of the No. 1 vertical plate 15 close to the No. 2 vertical plate 17. At the same time, the sliding plate 1701 is slidably connected to the No. 2 vertical plate 17, and the No. 2 vertical plate 17 is fixedly connected to the clamping plate 11, so that when the No. 1 vertical plate 15 slides, the spring 16 is in an extruded state, and the sliding plate 1701 slides. When the sliding plate 1701 slides to the pressure sensor 18, the value of the pressure sensor 18 changes, thereby sending an electrical signal to the warning light 19, so that the warning light 19 flashes, reminding the staff that the clamping plate 11 is clamped too tightly, which will affect the experimental data, and the distance between the two clamping plates 11 needs to be enlarged. By setting the spring 16, when the clamping plate 11 is not in the clamping state, the sliding vertical plate 12 is returned to its original position through the tension of the spring 16.
[0028] Example 2
[0029] A single-track bidirectional three-point bending test bench, such as Figure 1-Figure 3As shown, at least two driving devices 10 are fixedly installed inside the support frame 4, and a No. 2 threaded rod 8 is fixedly installed at the output end of the driving device 10, and the No. 2 threaded rod 8 is threadedly screwed with the connecting plate 7. A guide rod 9 is slidably connected to the surface of one side of the connecting plate 7. By setting two driving devices 10, and the two driving devices 10 rotate in opposite directions, if the width of the detection material 23 is too wide, the switch of the driving device 10 is started to make the driving device 10 work, and the No. 2 threaded rod 8 is fixedly installed at the output end of the driving device 10, and the No. 2 threaded rod 8 is screwed with the connecting plate 7. A guide rod 9 is slidably connected to the surface of one side of the connecting plate 7. By setting two driving devices 10, and the two driving devices 10 rotate in opposite directions, if the width of the detection material 23 is too wide, the switch of the driving device 10 is started to make the driving device 10 work. The plate 7 is threadedly connected, and the No. 2 threaded rod 8 is rotatably connected to the support frame 4, so that when the driving device 10 is working, the No. 2 threaded rod 8 rotates, so that the connecting plate 7 moves laterally. By setting a guide rod 9 that is slidably connected to the surface of one side of the connecting plate 7, the connecting plate 7 can move laterally more smoothly, thereby increasing the distance between the two connecting plates 7, thereby facilitating the clamping of the test material 23 by the clamping plate 11. By setting the No. 2 threaded rod 8 and the guide rod 9 to be rotatably connected with a fixed plate, the connecting plate 7 can be prevented from falling off due to excessive rotation.
[0030] like Figure 1-Figure 2 As shown, a slide rail 2 is fixedly installed on the upper section of the workbench 1, and at least two sliding blocks 5 are slidably connected inside the slide rail 2. The sliding block 5 is fixedly installed on the support frame 4, and a displacement scale 3 is fixedly installed on one side surface of the slide rail 2. A support plate 20 is fixedly installed on the upper surface of the workbench 1, and an electric telescopic rod 21 is fixedly installed on one side surface of the support plate 20. A force hammer 22 is fixedly installed on the end of the electric telescopic rod 21 away from the support plate 20. The slide rail 2 is provided and the slide rail 2 is slidably connected with the sliding block 5, and the upper end of the sliding block 5 is fixedly installed with the support frame 4, so that the support frame 4 slides in the slide rail 2. By providing the displacement scale 3, the support frame 4 can be moved more accurately. When an experiment is needed, the electric telescopic rod 21 is started to make the force hammer 22 move toward the direction of the test material 23, so that the force hammer 22 is subjected to force on the test material 23.
[0031] Working principle: the staff places the test material 23 on the support frame 4, and then manually rotates the steering wheel 1301. By setting the steering wheel 1301, a No. 1 threaded rod 13 is fixedly installed, so that when the steering wheel 1301 rotates, the No. 1 threaded rod 13 is driven to rotate, and a clamping plate 11 is fixedly installed at one end of the No. 1 threaded rod 13 away from the steering wheel 1301, and the No. 1 threaded rod 13 is threadedly connected with the connecting plate 7, so that when the No. 1 threaded rod 13 rotates, it drives the clamping plate 11 to move laterally, so that the two clamping plates 11 can firmly clamp the test material 23 placed on the support frame 4 to avoid shaking left and right due to the action of the force hammer 22, thereby affecting the accuracy of the measurement result, and a sliding vertical plate 12 is slidably installed on one side surface of the clamping plate 11. When the clamping plate 11 clamps the test material 23, the sliding vertical plate 12 slides toward the inside of the clamping plate 11, and a No. 1 threaded rod 12 is fixedly connected to the No. 1 threaded rod 14 on one side surface. The vertical plate 15 is configured such that when the sliding vertical plate 12 slides, the first vertical plate 15 is driven to slide. The first vertical plate 15 is connected to the second vertical plate 17 through a spring 16, and a sliding plate 1701 is fixedly installed on the surface of the first vertical plate 15 close to the second vertical plate 17. At the same time, the sliding plate 1701 is slidably connected to the second vertical plate 17, and the second vertical plate 17 is fixedly connected to the clamping plate 11. Therefore, when the first vertical plate 15 slides, the spring 16 is in an extruded state, and the sliding plate 1701 slides. When the sliding plate 1701 slides to the pressure sensor 18, the value of the pressure sensor 18 changes, thereby sending an electrical signal to the warning light 19, so that the warning light 19 flashes, reminding the staff that the clamping plate 11 is too tight, which will affect the experimental data, and the distance between the two clamping plates 11 needs to be enlarged. By setting the spring 16, when the clamping plate 11 is not in the clamping state, the sliding vertical plate 12 is returned to its original position through the tension of the spring 16.
[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A single-track bidirectional three-point bending test bench, comprising a workbench (1), characterized in that: A support frame (4) is provided at the upper end of the workbench (1), and connecting plates (7) are slidably installed at both ends of the support frame (4). A threaded rod (13) is screwed on one side of the connecting plate (7), and the threaded rod (13) extends to the outside of the connecting plate (7). A steering rudder (1301) is fixedly installed at one end of the threaded rod (13), and a clamping plate (11) is fixedly installed at one end of the threaded rod (13) away from the steering rudder (1301), and a detection material (23) is arranged between the two clamping plates (11).
2. A single-track bidirectional three-point bending test bench according to claim 1, characterized in that: A warning light (19) is fixedly mounted on the upper surface of the clamping plate (11), a sliding vertical plate (12) is slidably connected to a side surface of the clamping plate (11), and a side surface of the sliding vertical plate (12) is fixedly connected to a first vertical plate (15) via a connecting rod (14).
3. A single-track bidirectional three-point bending test bench according to claim 2, characterized in that: The first vertical plate (15) is connected to the second vertical plate (17) via a spring (16); a sliding plate (1701) is fixedly mounted on a surface of the first vertical plate (15) close to the second vertical plate (17); and the sliding plate (1701) extends to the outside of the second vertical plate (17).
4. A single-track bidirectional three-point bending test bench according to claim 3, characterized in that: The sliding plate (1701) is slidably connected to the second vertical plate (17), a pressure sensor (18) is fixedly installed on the inner wall of the clamping plate (11), and the pressure sensor (18) is electrically connected to the warning light (19).
5. The single-track bidirectional three-point bending test bench according to claim 1, characterized in that: At least two driving devices (10) are fixedly installed inside the support frame (4), and a No. 2 threaded rod (8) is fixedly installed at the output end of the driving device (10). The No. 2 threaded rod (8) is threadedly connected to the connecting plate (7), and a guide rod (9) is slidably connected to the surface of one side of the connecting plate (7).
6. A single-track bidirectional three-point bending test bench according to claim 5, characterized in that: A slide rail (2) is fixedly mounted on the upper section of the workbench (1), at least two slide blocks (5) are slidably connected inside the slide rail (2), the slide blocks (5) are fixedly mounted on the support frame (4), and a displacement scale (3) is fixedly mounted on one side surface of the slide rail (2).
7. The single-track bidirectional three-point bending test bench according to claim 6, characterized in that: A support plate (20) is fixedly mounted on the upper surface of the workbench (1), an electric telescopic rod (21) is fixedly mounted on one side surface of the support plate (20), and a force hammer (22) is fixedly mounted on one end of the electric telescopic rod (21) away from the support plate (20).