Silencing metal snapping testing machine
By introducing a soundproof box and automatic soundproof door into the metal tensile testing machine, the noise pollution problem was solved, noise isolation and equipment automation were achieved, and operational safety and efficiency were improved.
Patent Information
- Application Number
- CN202510891896.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2025-09-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The noise generated by existing metal tensile testing machines during the test process affects operators and the environment, and is difficult to use in places with strict noise control requirements.
A soundproof metal tensile testing machine was designed. It uses a soundproof box and double-opening soundproof doors, combined with screw rods and connecting components to achieve precise lifting of the lifting plate and automatic opening and closing of the soundproof doors, forming a closed cavity to block noise.
Effectively reduce noise pollution, provide a quiet working environment, reduce the labor intensity of operators, and improve the applicability and automation level of equipment.
Smart Images
Figure CN120668467A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pull-off testing machines, in particular to a noise-absorbing metal pull-off testing machine. Background Art
[0002] A metal tensile testing machine is a commonly used device used to determine the mechanical properties of metal materials under tensile loads, such as tensile strength, yield strength, and elongation. These performance parameters are crucial for evaluating metal material quality, designing appropriate engineering structures, and ensuring product safety and reliability.
[0003] Most metal tensile testing machines achieve the effect of metal tensile testing by installing a lifting plate above the workbench and a drive device for driving the lifting plate. Clamping plates are installed at the upper end of the workbench and the lower end of the lifting plate. However, during the test, the metal specimen is stretched until it breaks, and this process generates a lot of noise. The high-decibel noise can damage the operator's hearing. Long-term exposure to a noisy environment may lead to occupational health problems such as hearing loss. Secondly, the noise can also pollute the surrounding environment, affecting the comfort of the workplace and the work efficiency of other personnel, especially in laboratories or factory workshops with high requirements for noise control. Summary of the Invention
[0004] The purpose of the present invention is to provide a noise-absorbing metal breaking tester in order to solve the above-mentioned technical problems.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A silencer metal breaking tester includes a workbench and a lifting plate, wherein the upper end of the workbench and the lower end of the lifting plate are respectively provided with clamping discs, and further includes: Side support frames for sliding guide of the lifting plate: there are two side support frames and they are symmetrically arranged at the upper end of the workbench. The two side support frames are respectively provided with screw rods for rotation. The workbench is provided with a driving mechanism for driving the two screw rods to rotate synchronously. Both ends of the lifting plate are provided with connection components that are connected and matched with the screw rods. A soundproof box with double soundproof doors: the lifting plate, clamping plate and side support frame are all located inside the soundproof box, the lower end of the soundproof box is fixedly connected to the upper end of the workbench, and the two soundproof doors are respectively hinged to the sides of the soundproof box.
[0006] As a further description of the above technical solution: The connecting assembly includes a through hole opened on the surface of the lifting plate and an internal threaded barrel slidably arranged inside the through hole. A threaded seat that is threadedly connected to the screw rod is rotatably provided inside the through hole. The internal threaded barrel is threadedly connected to the outer surface of the threaded seat. A restraining member for restraining the sliding of the internal threaded barrel is provided on the outside of the internal threaded barrel. A limiting member for limiting and fixing the lifting plate that cooperates with the internal threaded barrel is provided inside the lifting plate. A transmission member for automatically opening and closing the soundproof door that cooperates with the internal threaded barrel is provided inside the lifting plate.
[0007] As a further description of the above technical solution: The transmission member includes a mounting plate and a mounting shaft. A pressure block squeezed by an internal threaded cylinder is elastically connected to one side of the mounting plate. A first sliding cavity for the pressure block to slide is provided inside the lifting plate. A through hole is provided on the surface of the mounting plate for the mounting shaft to pass through movably. A protrusion is fixedly provided on the inner wall of the through hole. A spiral groove matching the protrusion is provided on the surface of the mounting shaft. One end of the mounting shaft is rotatably connected to the pressure block. The other end of the mounting shaft passes through the outside of the side support frame and is fixed with an eccentric block for squeezing the soundproof door. The side wall of the side support frame is provided with a strip groove matching the mounting shaft.
[0008] As a further description of the above technical solution: The limiting component includes a mounting shell and a limiting block elastically connected to the outside of the mounting shell. A limiting hole matching the limiting block is provided on the inner wall of the side support frame. A second sliding cavity for sliding the limiting block is provided inside the lifting plate. The mounting shell is fixed inside the second sliding cavity. A slider squeezed by an internal threaded cylinder is provided inside the through hole. The slider is connected to the limiting block by a pull rope.
[0009] As a further description of the above technical solution: Matching slide grooves, the upper and lower ends of the outer surface of the slide bar are fixed with constraint blocks.
[0010] As a further description of the above technical solution: The height of the upper end surface of the sliding block is lower than the height of the lower end surface of the pressure block.
[0011] As a further description of the above technical solution: The upper ends of the two side support frames are connected through a top plate.
[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In the present invention, by providing a soundproof box and a double-opening soundproof door, during the test process, the soundproof box and the soundproof door form a closed cavity, which can effectively block the noise generated when the metal is broken from propagating outward, reduce noise pollution to the surrounding environment, provide a relatively quiet working environment for the operator, and avoid noise damage to the operator's hearing. At the same time, it also meets environmental protection requirements and is suitable for workplaces with strict noise restrictions. In the present invention, the screw rod is driven to rotate synchronously by the driving mechanism inside the workbench by the cooperation between the screw rod and the connecting assembly, thereby realizing the precise lifting and lowering movement of the lifting plate, facilitating the tensile test of metal specimens of different lengths, and improving the applicability of the equipment; In the present invention, the automatic opening and closing of the sound insulation door and the limiting and fixing functions of the lifting plate are realized through the coordinated work of the internal threaded cylinder, the transmission part and the limiting part. Therefore, during the tensile test, the sound insulation door will be closed first and then the metal will be subjected to the tensile test. During the test, there is no need for manual operation of the sound insulation door and the additional lifting plate locking device, which reduces manual intervention, improves the test efficiency and the degree of automation of the equipment, and reduces the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 Shows the appearance of a testing machine provided in an embodiment of the present invention; Figure 2 It shows a schematic diagram of the structure behind the hidden soundproof box and the soundproof door of a testing machine provided in an embodiment of the present invention; Figure 3 It shows a schematic structural diagram of a lifting plate provided according to an embodiment of the present invention; Figure 4 A side sectional view of a lifting plate structure according to an embodiment of the present invention is shown; Figure 5 It shows an exploded schematic diagram of a lifting plate structure provided according to an embodiment of the present invention; Figure 6 It shows a schematic structural diagram of a transmission member provided in an embodiment of the present invention; Figure 7 A schematic structural diagram of an internal threaded barrel, a threaded seat, and a restraining member provided in an embodiment of the present invention is shown; Figure 8 A schematic structural diagram of a position limiting member provided in an embodiment of the present invention is shown; Figure 9 A schematic structural diagram of the matching relationship between the spiral groove and the protrusion provided in an embodiment of the present invention is shown.
[0014] Legend: 1. Workbench; 2. Side support frame; 3. Soundproof box; 4. Soundproof door; 5. Clamping disk; 6. Lifting plate; 7. Eccentric block; 8. Top plate; 9. Strip groove; 10. Screw; 11. Internal threaded barrel; 12. Limit block; 13. Slide bar; 14. Pressure block; 15. First spring; 16. Mounting plate; 17. Mounting shaft; 18. Spiral groove; 19. Bump; 20. Bearing; 21. Threaded seat; 22. Constraint block; 23. Mounting shell; 24. Second spring; 25. Pull rope; 26. Guide wheel; 27. Slider; 28. Limit hole. DETAILED DESCRIPTION
[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.
[0016] like Figures 1-9 As shown, a silent metal tensile testing machine includes a workbench 1 and a lifting plate 6. Clamping plates 5 are provided at the upper end of the workbench 1 and the lower end of the lifting plate 6, respectively. The clamping plates 5 are used to clamp and fix the two ends of the metal to be tested. The machine also includes: Side support frames 2 for sliding guidance of the lifting plate 6: There are two side support frames 2 and they are symmetrically arranged on the upper end of the workbench 1. The side support frames 2 are fixed to the workbench 1 by bolts or welding. Screw rods 10 are respectively rotated inside the two side support frames 2. The upper and lower ends of the screw rods 10 are rotatably connected to the side support frames 2, effectively ensuring the stability of the screw rods 10 during the rotation process. A driving mechanism for driving the two screw rods 10 to rotate synchronously is provided inside the workbench 1. An installation cavity for installing the driving mechanism is formed inside the workbench 1. Connecting components that are connected and cooperate with the screw rods 10 are provided at both ends of the lifting plate 6. When the driving mechanism drives the two screw rods 10 to rotate synchronously, it will drive the lifting plate 6 to move through the connecting component, that is, drive the lifting plate 6 to perform lifting and lowering movements; A soundproof box 3 with double-opening soundproof doors 4: the lifting plate 6, the clamping plate 5 and the side support frame 2 are all located inside the soundproof box 3. When the soundproof door 4 is closed, the soundproof box 3 and the soundproof door 4 form a closed cavity, which has a good sound insulation effect. The lower end of the soundproof box 3 is fixedly connected to the upper end of the workbench 1 by bolts, and the two soundproof doors 4 are respectively hinged to the sides of the soundproof box 3 through reset hinges. Under the action of the reset hinges, the soundproof doors 4 will be flipped closed.
[0017] Furthermore, the connecting component includes a through hole opened on the surface of the lifting plate 6 and an internal threaded tube 11 slidably arranged inside the through hole. The inner wall of the through hole is smooth. A threaded seat 21 is rotatably provided inside the through hole and is threadedly connected to the screw rod 10. The threaded seat 21 is rotatably connected to the inner wall of the through hole through a bearing 20. The internal threaded tube 11 is threadedly connected to the outer surface of the threaded seat 21. A restraining member for restraining the sliding of the internal threaded tube 11 is provided on the outside of the internal threaded tube 11. A limiting member for cooperating with the internal threaded tube 11 for limiting and fixing the lifting plate 6 is provided inside the lifting plate 6. A transmission member for automatically opening and closing the soundproof door 4 is provided inside the lifting plate 6 and is cooperating with the internal threaded tube 11.
[0018] Furthermore, the transmission member includes a mounting plate 16 and a mounting shaft 17. One side of the mounting plate 16 is connected to a pressure block 14 squeezed by the internal threaded tube 11 through a first spring 15. The pressure block 14 is wedge-shaped and the wedge surface faces the side of the internal threaded tube 11. A first sliding cavity for the pressure block 14 to slide is provided inside the lifting plate 6. A through hole for the mounting shaft 17 to pass through is formed on the surface of the mounting plate 16. A protrusion 19 is fixedly provided on the inner wall of the through hole. A spiral groove 18 matching the protrusion 19 is provided on the surface of the mounting shaft 17. One end of the mounting shaft 17 is rotatably connected to the pressure block 14. The other end of the mounting shaft 17 passes through the outside of the side support frame 2 and is fixed with an eccentric block 7 for squeezing the soundproof door 4. The side wall of the side support frame 2 is provided with a through hole matching the mounting shaft 17. The strip groove 9 is combined. When in use, the pressure block 14 is squeezed by the internal threaded tube 11, which will cause the first spring 15 to be compressed, thereby driving the installation shaft 17 and the eccentric block 7 to move. During the movement of the installation shaft 17, the spiral groove 18 and the protrusion 19 cooperate with each other to cause the installation shaft 17 to rotate. The rotation of the installation shaft 17 drives the eccentric block 7 to rotate. During the movement and rotation, the eccentric block 7 will squeeze the sound insulation door 4 to gradually deflect and open. Conversely, when the internal threaded tube 11 releases the squeeze on the pressure block 14, the pressure block 14 will move in the opposite direction and reset under the reset action of the first spring 15, thereby driving the installation shaft 17 and the eccentric block 7 to move in the opposite direction and rotate and reset. At the same time, the sound insulation door 4 is deflected and closed under the action of the reset hinge.
[0019] Furthermore, the limiting component includes a mounting shell 23 and a limiting block 12 elastically connected to the outside of the mounting shell 23. The limiting block 12 is connected to the mounting shell 23 through a second spring 24. A limiting hole 28 is provided on the inner wall of the side support frame 2 to match the limiting block 12. A second sliding cavity for sliding the limiting block 12 is provided inside the lifting plate 6. The mounting shell 23 is fixed inside the second sliding cavity. A slider 27 squeezed by the internal threaded cylinder 11 is provided inside the through hole. The slider 27 is connected to the limiting block 12 through a pull rope 25. The rotating device inside the mounting shell 23 There is a guide wheel 26 that cooperates with the pull rope 25, and a sliding hole is opened on the side wall of the mounting shell 23 for the pull rope 25 to pass through. When in use, the slider 27 is squeezed by the internal threaded tube 11, which will cause the slider 27 to slide and drive the limit block 12 to slide through the pull rope 25, so that the limit block 12 is disengaged from the limit hole 28. In this process, the second spring 24 is compressed. Conversely, when the internal threaded tube 11 releases the squeeze on the slider 27, the second spring 24 has the elastic force to restore its original state, providing power for the limit block 12 to be stuck in the limit hole 28.
[0020] Furthermore, the restraint part includes a slide bar 13 fixed on the outside of the internal threaded tube 11, and a slide groove matching the slide bar 13 is provided on the inner wall of the through hole. Constraint blocks 22 are fixed on the upper and lower ends of the outer surface of the slide bar 13. A connecting groove for inserting one end of the restraint block 22 is provided on the surface of the slide bar 13. The restraint block 22 is connected and fixed to the slide bar 13 by a countersunk screw, and a countersunk hole matching the countersunk screw is provided on the surface of the restraint block 22.
[0021] Furthermore, the height of the upper end surface of the slider 27 is lower than the height of the lower end surface of the pressure block 14, so that the internal threaded tube 11 first squeezes the pressure block 14 and then squeezes the slider 27. Only after the soundproof door 4 is fully opened will the limit block 12 be disengaged from the limit hole 28, releasing the limit fixation of the lifting plate 6, thereby allowing the lifting plate 6 to move.
[0022] Furthermore, the upper ends of the two side support frames 2 are connected by a top plate 8. Under the connection and support of the top plate 8, the installation strength of the side support frames 2 is effectively guaranteed.
[0023] Working principle: With the soundproof door 4 open, the operator first clamps one end of the metal to be tested on the clamping plate 5 at the upper end of the workbench 1. Then, the driving mechanism drives the two screws 10 to rotate synchronously in the forward direction, driving the lifting plate 6 downward, so that the clamping plate 5 at the lower end of the lifting plate 6 approaches the metal to be tested and fixes the other end of the metal to be tested. Then the driving mechanism drives the two screw rods 10 to reverse synchronously. Under the pulling action of the metal to be detected, the lifting plate 6 will be restricted from moving upward at the beginning, that is, the reversal of the screw rod 10 will drive the internal threaded barrel 11 to move upward. The upward movement of the internal threaded barrel 11 will release the squeeze on the pressure block 14, so that the pressure block 14 is reset, and drive the installation shaft 17 and the eccentric block 7 to move and deflect and reset, thereby releasing the squeeze on the soundproof door 4. The soundproof door 4 flips and closes under the action of the reset hinge, and on the other hand, it will release the squeeze on the slider 27. , so that the second spring 24 has the elastic force to restore its original shape. As the internal threaded barrel 11 moves upward, the slide bar 13 moves upward, which will cause the restraining block 22 at the lower end of one side of the slide bar 13 to abut against the lower end surface of the lifting plate 6, limiting the continued movement of the internal threaded barrel 11. Then, the screw rod 10 continues to reverse and exerts an upward force on the lifting plate 6, thereby gradually breaking the metal to be detected. In the process of breaking the metal to be detected, the sound insulation box 3 and the sound insulation door 4 form a closed cavity, which has a better sound insulation effect; After the metal to be detected is broken, the screw rod 10 continues to reverse and drives the lifting plate 6 to move upward, which will drive the limit block 12 to move upward synchronously. When the limit block 12 is aligned with the limit hole 28, the elastic force of the second spring 24 will cause the limit block 12 to be stuck in the limit hole 28, thereby limiting the movement of the lifting plate 6. Then, the two screw rods 10 are driven to rotate forward synchronously through the driving mechanism. Since the movement of the lifting plate 6 is restricted, the forward rotation of the screw rod 10 will drive the internal threaded barrel 11 to move downward. The downward movement of the internal threaded barrel 11 will first gradually squeeze the pressure block 14, so that the first spring 15 is compressed, and the mounting shaft 17 and the eccentric block 7 move toward the outside of the sound insulation box 3, that is, the eccentric block 7 gradually squeezes the sound insulation door 4. At the same time, under the mutual cooperation of the protrusion 19 and the spiral groove 18, the mounting shaft 17 and the eccentric block 7 are rotated, and then the eccentric block 7 is deflected to further squeeze the sound insulation door 4, so that the sound insulation door 4 is fully opened, which is convenient for disassembly and removal of the broken metal and preparation for re-clamping the new metal to be tested. When metal detection is needed later, the driving mechanism continues to drive the screw rod 10 to rotate forward, driving the internal threaded barrel 11 to continue to move downward, which will squeeze the slider 27, causing the slider 27 to move downward. The slider 27 drives the limit block 12 to move through the pull rope 25, so that the limit block 12 is disengaged from the limit hole 28, and then the screw rod 10 continues to rotate forward to drive the lifting plate 6 to move downward. When metal detection is not needed later, the driving mechanism continues to drive the screw rod 10 to reverse, so that the internal threaded barrel 11 continues to move upward, releasing the squeeze on the pressure block 14, so that the pressure block 14 is reset under the action of the first spring 15, and the mounting shaft 17 and the eccentric block 7 are reset. At the same time, the soundproof door 4 is flipped closed under the action of the reset hinge.
[0024] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.
Claims
1. A sound-absorbing metal tensile testing machine, comprising a workbench (1) and a lifting plate (6), wherein a clamping disc (5) is provided at the upper end of the workbench (1) and the lower end of the lifting plate (6), and characterized in that: Also includes: Side support frames (2) for slidingly guiding the lifting plate (6): the side support frames (2) are two in number and symmetrically arranged at the upper end of the workbench (1), the two side support frames (2) are respectively provided with screw rods (10) for rotation, the workbench (1) is provided with a driving mechanism for driving the two screw rods (10) to rotate synchronously, and the two ends of the lifting plate (6) are provided with connecting components that are connected and matched with the screw rods (10); A soundproof box (3) with double-opening soundproof doors (4): the lifting plate (6), the clamping plate (5) and the side support frame (2) are all located inside the soundproof box (3); the lower end of the soundproof box (3) is fixedly connected to the upper end of the workbench (1); and the two soundproof doors (4) are respectively hinged to the side surfaces of the soundproof box (3).
2. The sound-absorbing metal breaking tester according to claim 1, characterized in that: The connecting assembly includes a through hole provided on the surface of the lifting plate (6) and an internal threaded barrel (11) slidably provided inside the through hole, a threaded seat (21) threadedly connected to the screw rod (10) is rotatably provided inside the through hole, the internal threaded barrel (11) is threadedly connected to the outer surface of the threaded seat (21), a restraining member for restraining the sliding of the internal threaded barrel (11) is provided on the outer side of the internal threaded barrel (11), a limiting member for cooperating with the internal threaded barrel (11) for limiting and fixing the lifting plate (6) is provided inside the lifting plate (6), and a transmission member for automatically opening and closing the soundproof door (4) is provided inside the lifting plate (6) and cooperating with the internal threaded barrel (11).
3. The sound-absorbing metal breaking tester according to claim 2, characterized in that: The transmission member includes a mounting plate (16) and a mounting shaft (17), one side of the mounting plate (16) is elastically connected to a pressure block (14) squeezed by the internal threaded cylinder (11), a first sliding cavity for the pressure block (14) to slide is provided inside the lifting plate (6), a through hole for the mounting shaft (17) to movably pass through is provided on the surface of the mounting plate (16), a protrusion (19) is fixedly provided on the inner wall of the through hole, a spiral groove (18) matching with the protrusion (19) is provided on the surface of the mounting shaft (17), one end of the mounting shaft (17) is rotatably connected to the pressure block (14), the other end of the mounting shaft (17) passes through the outside of the side support frame (2) and is fixed with an eccentric block (7) for squeezing the sound insulation door (4), and a strip groove (9) matching with the mounting shaft (17) is provided on the side wall of the side support frame (2).
4. The sound-absorbing metal breaking tester according to claim 3, characterized in that: The limiting member comprises a mounting shell (23) and a limiting block (12) elastically connected to the outside of the mounting shell (23); a limiting hole (28) matching the limiting block (12) is provided on the inner wall of the side support frame (2); a second sliding cavity for sliding the limiting block (12) is provided inside the lifting plate (6); the mounting shell (23) is fixed inside the second sliding cavity; a slider (27) squeezed by the internal threaded cylinder (11) is provided inside the through hole for sliding; the slider (27) is connected to the limiting block (12) via a pull rope (25).
5. The sound-absorbing metal breaking tester according to claim 2, characterized in that: The restraining member comprises a slide bar (13) fixedly arranged on the outside of the internal threaded cylinder (11); a slide groove cooperating with the slide bar (13) is provided on the inner wall of the through hole; and restraining blocks (22) are fixedly arranged on the upper and lower ends of the outer surface of the slide bar (13).
6. The sound-absorbing metal breaking tester according to claim 4, characterized in that: The height of the upper end surface of the slider (27) is lower than the height of the lower end surface of the pressure block (14).
7. The sound-absorbing metal breaking tester according to claim 1, characterized in that: The upper ends of the two side support frames (2) are connected via a top plate (8).