Fatigue detector driven by lead screw

Abstract

The utility model discloses a fatigue detector driven by a lead screw, which relates to the technical field of material testing and comprises a transmission assembly, the transmission assembly comprises a transmission disc, a transmission shaft is slidably connected onto the transmission disc, a transmission rod is arranged on the transmission shaft, and a second arc-shaped fixing piece is slidably connected onto the transmission rod. A first fixing frame is fixedly connected to the second arc-shaped fixing piece, a clamping piece is fixedly connected to the first fixing frame, a second fixing frame is slidably connected to the clamping piece, a mounting plate is fixedly connected to the bottom plate, a mounting air bag is fixedly connected to the mounting plate, and the first arc-shaped fixing piece is fixedly connected to the transmission rod. The installation air bag further extrudes the lead screw motor, the lead screw motor is firmly fixed, clamps of different specifications do not need to be manufactured, labor cost is saved, production efficiency is improved, and the problems that in the prior art, clamps need to be disassembled frequently, and working efficiency is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of materials testing technology, specifically to a screw-driven fatigue testing instrument. Background Technology

[0002] With the development of modern industry, the production process increasingly emphasizes the balance between efficiency and quality. In large-scale production, product quality cannot be guaranteed solely by the theoretical properties of materials; instead, practical testing methods are needed to ensure that every product meets requirements. Fatigue testing equipment can quickly and accurately perform fatigue tests on components, adapting to the pace and demands of modern production.

[0003] While adding fatigue testing to the production process incurs certain costs, in the long run, it can prevent higher costs associated with repairs, replacements, or even recalls due to product fatigue failure. Early detection and resolution of fatigue issues can reduce after-sales costs and improve a company's economic efficiency. Furthermore, accurately understanding the fatigue performance of materials and components allows for cost control during material selection and design optimization, enabling the selection of more cost-effective solutions.

[0004] The lead screw fatigue tester mainly uses lead screw drive to apply cyclic loads to the test object. The lead screw performs precise linear motion under the drive of a motor or other power device. Through the connecting device, the motion of the lead screw is converted into loads such as tension, compression, and bending on the test object. The magnitude, frequency and number of cycles of the load can be precisely controlled and adjusted according to the test requirements.

[0005] However, in the actual use of existing technology, it is necessary to fix the motor on the lead screw. The current method is to manufacture clamps of different specifications and use tools such as screws to fix the lead screw during the specific operation. This fixing method can meet the needs of lead screw fixing to a certain extent, but when there are a large number of lead screws to be tested, since different specifications of lead screws require different clamps for fixing, it is necessary to frequently change the clamps manually. Each clamp change requires a series of tedious operations, including disassembling the old clamp, installing the new clamp, and tightening with tools such as screws. This not only consumes a lot of time and manpower, but also greatly affects production efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a screw-driven fatigue testing instrument to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a screw-driven fatigue testing instrument, comprising a base plate, wherein a transmission assembly is provided on the base plate;

[0008] The transmission assembly includes a transmission disc, a transmission shaft slidably connected to the transmission disc, a transmission rod disposed on the transmission shaft, a second arc-shaped fixing member slidably connected to the transmission rod, a first fixing frame fixedly connected to the second arc-shaped fixing member, a snap-fit ​​member fixedly connected to the first fixing frame, a second fixing frame slidably connected to the snap-fit ​​member, a mounting plate fixedly connected to the base plate, an airbag fixedly connected to the mounting plate, and the first arc-shaped fixing member fixedly connected to the transmission rod.

[0009] In a preferred embodiment, an installation chamber is fixedly connected to the mounting plate, the transmission disc is disposed inside the installation chamber, a lead screw motor is disposed on the installation airbag, a lead screw is fixedly connected to the lead screw motor, a sliding block is threadedly connected to the lead screw, and the sliding block is slidably connected to the base plate.

[0010] The above technical solution employs the following: By incorporating a safety airbag, during use, the drive motor is activated, causing it to rotate the drive disc. This allows the drive shaft to slide within the arc-shaped groove on the drive disc, causing the drive rod to clamp the first arc-shaped fixing component inward, securing the lead screw motor placed on the airbag. As the drive rod continues to move, it compresses the airbag, further compressing the lead screw motor and fixing it in place. Before use, a detection module can be installed on the drive motor. Activating the lead screw motor causes the second arc-shaped fixing component on the motor to move the first fixing frame. Various data generated by the vibration and rotation of the sliding block and lead screw are transmitted to the detection module via the drive disc, enabling the detection of lead screw data. During this process, the drive rod slides within the second arc-shaped fixing component, preventing the drive shaft's position from being affected by the sliding component's movement.

[0011] In a preferred embodiment, the transmission disc is rotatably connected to the mounting plate, and the sliding block is disposed between the first fixed frame and the second fixed frame.

[0012] The above technical solution is adopted: by setting a first fixed frame and a second fixed frame, the snap-fit ​​part on the first fixed frame can be slid into the second fixed frame by external force during use, so as to fix the sliding block.

[0013] In a preferred embodiment, a spring is fixedly connected to the drive shaft, and the side of the spring away from the drive shaft is fixedly connected to the drive rod.

[0014] The above technical solution is adopted: by setting a spring, when the drive shaft drives the drive rod to slide, the spring can act as a universal joint, preventing the drive shaft and drive rod from breaking when they move.

[0015] In a preferred embodiment, the transmission disc has an arc-shaped groove, the transmission shaft is slidably connected to the arc-shaped groove on the transmission disc, a guide block is fixedly connected to the bottom of the transmission rod, a guide groove is provided on the mounting plate, and the guide block on the transmission rod is slidably connected to the guide groove on the mounting plate.

[0016] The above technical solution is adopted: by setting an arc-shaped groove, the transmission shaft is guided; by setting a guide groove on the mounting plate, the transmission rod is guided.

[0017] In a preferred embodiment, a fixing block is fixedly connected to the mounting plate, a fixing shaft is fixedly connected to the fixing block, and the side of the fixing shaft away from the fixing block is fixedly connected to the drive motor.

[0018] The above technical solution is adopted: the drive motor is fixed by setting a fixing block.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] This invention employs a combination of a transmission assembly and a mounting airbag. Starting the transmission motor drives the transmission disc to rotate, and the arc-shaped groove on the transmission disc guides the transmission shaft to slide, thereby moving the transmission rod. The first arc-shaped fixing member on the transmission rod clamps the lead screw motor placed on the mounting airbag. As the transmission rod continues to move, it compresses the mounting airbag, further compressing the lead screw motor and thus firmly fixing it in place. This eliminates the need to manufacture clamps of different specifications, avoids the tedious operation of frequently changing clamps manually, improves fixing efficiency, saves labor costs, and increases production efficiency. It also solves the problem in the prior art where frequent clamp disassembly is required, affecting work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a screw-driven fatigue testing instrument.

[0022] Figure 2 This is a schematic cross-sectional view of the mounting chamber of a screw-driven fatigue testing instrument.

[0023] Figure 3 This is a schematic diagram showing the position of the drive motor in a lead screw driven fatigue testing instrument.

[0024] Figure 4 A fatigue testing instrument driven by a lead screw Figure 1 Schematic diagram of the structure at point A in the middle.

[0025] Numbering on the map:

[0026] 1. Base plate;

[0027] 2. Transmission assembly; 21. Mounting chamber; 22. Drive motor; 23. Transmission disc; 24. Mounting plate; 25. Drive shaft; 26. Spring; 27. Drive rod; 28. First arc-shaped fixing component; 29. ​​Second arc-shaped fixing component; 210. Mounting airbag;

[0028] 3. Fixing block; 31. Fixing shaft;

[0029] 4. Lead screw motor; 41. Lead screw; 42. Sliding block;

[0030] 5. First fixing frame; 51. Clip-on component; 52. Second fixing frame. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-4 As shown, a screw-driven fatigue testing instrument includes a base plate 1, on which a transmission assembly 2 is disposed;

[0033] The transmission assembly 2 includes a transmission disc 23, a transmission shaft 25 slidably connected to the transmission disc 23, a transmission rod 27 disposed on the transmission shaft 25, a second arc-shaped fixing member 29 slidably connected to the transmission rod 27, a first fixing frame 5 fixedly connected to the second arc-shaped fixing member 29, a snap-fit ​​member 51 fixedly connected to the first fixing frame 5, a second fixing frame 52 slidably connected to the snap-fit ​​member 51, a mounting plate 24 fixedly connected to the base plate 1, an airbag 210 fixedly connected to the mounting plate 24, and a first arc-shaped fixing member 28 fixedly connected to the transmission rod 27.

[0034] In this invention, a combination of transmission assembly 2 and mounting airbag 210 is used. When the transmission motor 22 is started, it drives the transmission disc 23 to rotate. The arc groove on the transmission disc 23 guides the transmission shaft 25 to slide, thereby driving the transmission rod 27 to move. The first arc-shaped fixing member 28 on the transmission rod 27 clamps the lead screw motor 4 placed on the mounting airbag 210 inward. As the transmission rod 27 continues to move and compress the mounting airbag 210, the mounting airbag 210 further compresses the lead screw motor 4, thereby firmly fixing the lead screw motor 4. There is no need to make clamps of different specifications, avoiding the tedious operation of frequently changing clamps manually, improving fixing efficiency, saving labor costs, and improving production efficiency.

[0035] Furthermore, such as Figures 1 to 4As shown, an installation chamber 21 is fixedly connected to the installation plate 24, and a transmission disc 23 is disposed inside the installation chamber 21. A lead screw motor 4 is mounted on the installation airbag 210, and a lead screw 41 is fixedly connected to the lead screw motor 4. A sliding block 42 is threadedly connected to the lead screw 41, and the sliding block 42 is slidably connected to the base plate 1. With the safety airbag in place, during use, the transmission motor 22 can be started, causing the transmission motor 22 to drive the transmission disc 23 to rotate. This causes the transmission shaft 25 to slide within the arc-shaped groove on the transmission disc 23, causing the transmission rod 27 to drive the first arc-shaped fixing member 28 to clamp inward, thus securing the lead screw motor 4 placed on the installation airbag 210. Then, the transmission rod... During the continued transmission process, the airbag 210 is squeezed, causing the airbag 210 to squeeze the lead screw motor 4, thus fixing the lead screw motor 4. Before use, a detection module can be installed on the transmission motor 22. When the lead screw motor 4 is started, the second arc-shaped fixing part 29 on the lead screw motor 4 drives the first fixing frame 5 to move. Various data generated by the vibration and rotation of the sliding block 42 and the lead screw 41 can be transmitted to the detection module through the transmission disk 23 to detect the data of the lead screw 41. At this time, the transmission rod 27 will slide inside the second arc-shaped fixing part 29 and will not be affected by the transmission of the sliding part.

[0036] The transmission disc 23 is rotatably connected to the mounting plate 24. The sliding block 42 is set between the first fixed frame 5 and the second fixed frame 52. By setting the first fixed frame 5 and the second fixed frame 52, the snap-fit ​​piece 51 on the first fixed frame 5 can be slid into the second fixed frame 52 by external force during use, thereby fixing the sliding block 42.

[0037] A spring 26 is fixedly connected to the drive shaft 25. The side of the spring 26 away from the drive shaft 25 is fixedly connected to the drive rod 27. By setting the spring 26, when the drive shaft 25 is in motion, the spring 26 can act as a universal joint to prevent the drive shaft 25 and the drive rod 27 from breaking when the drive shaft 25 moves.

[0038] The transmission disc 23 has an arc-shaped groove, and the transmission shaft 25 is slidably connected in the arc-shaped groove on the transmission disc 23. The bottom of the transmission rod 27 is fixedly connected to a guide block, and the mounting plate 24 has a guide groove. The guide block on the transmission rod 27 is slidably connected in the guide groove on the mounting plate 24. The arc-shaped groove serves to guide the transmission shaft 25, and the guide groove on the mounting plate 24 serves to guide the transmission rod 27.

[0039] The above solution also has the problem that it does not specify how to fix the drive motor 22, which may cause the drive motor 22 to rotate during use. Figure 2 , Figure 3As shown, a fixing block 3 is fixedly connected to the mounting plate 24, and a fixing shaft 31 is fixedly connected to the fixing block 3. The side of the fixing shaft 31 away from the fixing block 3 is fixedly connected to the drive motor 22. By setting the fixing block 3, the drive motor 22 is fixed.

[0040] Working principle: such as Figure 1 - Figure 4 As shown, during use, the drive motor 22 is started to drive the drive disc 23 to rotate. The arc groove on the drive disc 23 guides the drive shaft 25 to slide, thereby driving the drive rod 27 to move. The bottom guide block of the drive rod 27 slides in the guide groove of the mounting plate 24 to ensure directional stability. The first arc-shaped fixing piece 28 on it clamps the lead screw motor 4 placed on the mounting airbag 210 inward. The drive rod 27 continues to move and squeezes the mounting airbag 210 to fix the lead screw motor 4. At the same time, the first fixing frame 5, the second fixing frame 52 and the snap-fit ​​piece 51 are provided to fix the sliding block 42. The spring 26 on the drive shaft 25 acts as a universal joint to prevent breakage. The detection module installed on the drive motor 22 can detect the data of the lead screw 41 when the lead screw motor 4 is working. At this time, the sliding of the drive rod 27 in the second arc-shaped fixing piece 29 does not affect the position of the drive shaft 25.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A screw-driven fatigue testing instrument, comprising a base plate (1), characterized in that, A transmission assembly (2) is provided on the base plate (1); The transmission assembly (2) includes a transmission disc (23), a transmission shaft (25) is slidably connected to the transmission disc (23), a transmission rod (27) is provided on the transmission shaft (25), a second arc-shaped fixing member (29) is slidably connected to the transmission rod (27), a first fixing frame (5) is fixedly connected to the second arc-shaped fixing member (29), a snap-fit ​​member (51) is fixedly connected to the first fixing frame (5), a second fixing frame (52) is slidably connected to the snap-fit ​​member (51), an mounting plate (24) is fixedly connected to the base plate (1), an airbag (210) is fixedly connected to the mounting plate (24), and a first arc-shaped fixing member (28) is fixedly connected to the transmission rod (27).

2. The fatigue testing instrument driven by a lead screw according to claim 1, characterized in that: An installation chamber (21) is fixedly connected to the installation plate (24), and the transmission disc (23) is set inside the installation chamber (21). A lead screw motor (4) is provided on the installation airbag (210), and a lead screw (41) is fixedly connected to the lead screw motor (4). A sliding block (42) is threadedly connected to the lead screw (41), and the sliding block (42) is slidably connected to the base plate (1).

3. The fatigue testing instrument driven by a lead screw according to claim 2, characterized in that: The transmission disc (23) is rotatably connected to the mounting plate (24), and the sliding block (42) is disposed between the first fixed frame (5) and the second fixed frame (52).

4. The fatigue testing instrument driven by a lead screw according to claim 2, characterized in that: A spring (26) is fixedly connected to the drive shaft (25), and the side of the spring (26) away from the drive shaft (25) is fixedly connected to the drive rod (27).

5. A fatigue testing instrument driven by a lead screw according to claim 1, characterized in that: The transmission disc (23) has an arc-shaped groove, the transmission shaft (25) is slidably connected in the arc-shaped groove on the transmission disc (23), the bottom of the transmission rod (27) is fixedly connected to a guide block, the mounting plate (24) has a guide groove, and the guide block on the transmission rod (27) is slidably connected in the guide groove on the mounting plate (24).

6. A screw-driven fatigue testing instrument according to claim 4, characterized in that: A fixing block (3) is fixedly connected to the mounting plate (24), and a fixing shaft (31) is fixedly connected to the fixing block (3). The side of the fixing shaft (31) away from the fixing block (3) is fixedly connected to the transmission motor (22).

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