Universal coaxial adjusting device for fatigue testing machine

Abstract

The utility model discloses a universal coaxial adjusting device for a fatigue testing machine, and relates to the technical field of fatigue testing machines. The laser centering testing machine comprises a testing machine body and a laser centering sensor, a centering assembly is arranged on a base of the testing machine body and comprises a centering block and a connecting column, a guide groove is formed in the lower surface of the centering block, and a guide block is arranged in the guide groove in a sliding mode; a first threaded rod drives a centering block to transversely move on a guide block, a second threaded rod drives a sliding block to move, and the sliding block drives a clamp mounting plate to longitudinally move, so that a driving shaft of a test motor is centered with a laser beam of a laser centering sensor, and the condition that manual adjustment and centering are relatively tedious can be avoided; therefore, the aim of improving the centering efficiency is fulfilled; and rotation of a third bevel gear is converted into revolution of a second bevel gear, the output rotating speed of a first motor is reduced, then the rotating speed of a transmission shaft is reduced, in this way, the adjusting distance can be conveniently controlled, and therefore the adjusting accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing machine technology, specifically to a universal coaxial adjustment device for fatigue testing machines. Background Technology

[0002] A fatigue testing machine is a device used to test the fatigue performance of materials or components under cyclic loading conditions. It simulates the alternating loads that materials are subjected to during actual use. For example, the drive shaft of a motor needs to undergo torsional fatigue testing to study the fatigue characteristics of the drive shaft of the motor under cyclic torsional load.

[0003] Most existing fatigue testing machines require manual adjustment of their coaxial adjustment devices to achieve centering, but this operation is not only cumbersome and time-consuming, but also inefficient. Utility Model Content

[0004] To address the problems of cumbersome, time-consuming, and inefficient manual adjustment and alignment, the purpose of this invention is to provide a universal coaxial adjustment device for fatigue testing machines.

[0005] To solve the above technical problems, this utility model adopts the following technical solution: a universal coaxial adjustment device for fatigue testing machines, comprising a testing machine body and a laser alignment sensor. The laser alignment sensor is installed on the detection mechanism of the testing machine body. An alignment component is provided on the base of the testing machine body. The alignment component includes an alignment block and a connecting column. A guide groove is formed on the lower surface of the alignment block. A guide block is slidably arranged inside the guide groove. The top end of the connecting column is fixedly connected to the lower surface of the guide block. A first threaded rod is rotatably installed inside the guide groove, with one end of the first threaded rod threaded through the guide block. A sliding groove is formed on the upper surface of the alignment block. A slider is slidably arranged inside the sliding groove. A second threaded rod is rotatably installed inside the sliding groove, with one end of the second threaded rod threaded through the guide block. The sliding block has a clamp mounting plate fixed on its upper surface. Two first motors for driving the first and second threaded rods are located on the outer side of the centering block. Two speed reduction components for transmitting the first and second threaded rods are located between the outer side of the centering block and the two first motors, facilitating centering adjustment. Symmetrically distributed guide rods are fixed inside the guide groove, with one end of each guide rod movably penetrating the guide block, ensuring stable movement of the guide block. A mounting plate is fixed at the bottom of the connecting column and mounted on the base of the testing machine body. The centering components can be mounted on the base of the testing machine body via the mounting plate. The first and second threaded rods are perpendicularly distributed, ensuring that the movement directions of the guide block and the sliding block are perpendicular.

[0006] Preferably, the deceleration assembly includes a housing, two housings are vertically distributed and fixedly installed on the outer side of the centering block, a drive shaft rotatably passes through the outer side of the housing, a first bevel gear is movably sleeved on the outer side of the drive shaft, one side of the first bevel gear is fixedly installed on the inner wall of the housing, a second bevel gear meshes with the outer side of the first bevel gear, a connecting block is rotatably provided on the side of the second bevel gear near the drive shaft, one end of the connecting block is fixedly connected to the end of the drive shaft near the first bevel gear, a third bevel gear meshes with the outer side of the second bevel gear, a rotating shaft is fixedly passed through the middle of the third bevel gear, one end of the rotating shaft is rotatably installed on the inner wall of the housing, the rotation of the third bevel gear can drive the second bevel gear to revolve on the first bevel gear, the rotating shaft can drive the third bevel gear to rotate, a first motor is fixedly installed on the outer side of the housing, the end of the output shaft of the first motor movably passes through the housing and is fixedly connected to one end of the rotating shaft, the first motor can provide power for the rotation of the rotating shaft, one end of each of the two drive shafts movably passes through the centering block and is fixedly connected to the ends of a first threaded rod and a second threaded rod respectively, the drive shafts can drive the first threaded rod and the second threaded rod to rotate.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] 1. The first threaded rod drives the centering block to move laterally on the guide block, while the second threaded rod drives the slider to move. The slider drives the fixture mounting plate to move longitudinally, so that the test motor drive shaft is aligned with the laser beam of the laser alignment sensor. This avoids the tedious manual adjustment of alignment, thereby improving the alignment efficiency.

[0009] 2. By converting the rotation of the third bevel gear into the revolution of the second bevel gear, the output speed of the first motor is reduced, thereby reducing the speed of the transmission shaft. This makes it easier to control the adjustment distance and improves the accuracy of the adjustment. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a cross-sectional schematic diagram of the centering component structure of this utility model.

[0013] Figure 3This is a cross-sectional schematic diagram of the deceleration component of this utility model.

[0014] Figure 4 This is a cross-sectional schematic diagram of the centering block and its connecting structure of this utility model.

[0015] Figure 5 This is a cross-sectional schematic diagram of the outer shell and its connecting structure of this utility model.

[0016] In the diagram: 1. Main body of the testing machine; 2. Centering assembly; 21. Centering block; 22. Connecting column; 23. Guide groove; 24. Guide block; 25. Slide groove; 26. Slider; 27. Fixture mounting plate; 28. Reduction assembly; 281. Housing; 282. Drive shaft; 283. First bevel gear; 284. Second bevel gear; 285. Connecting block; 286. Rotating shaft; 287. Third bevel gear; 288. First motor; 29. ​​First threaded rod; 210. Second threaded rod; 211. Guide rod; 212. Mounting plate; 3. Laser centering sensor. Detailed Implementation

[0017] 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.

[0018] Example: Figure 1-5As shown, this utility model provides a universal coaxial adjustment device for a fatigue testing machine, including a testing machine body 1 and a laser alignment sensor 3. The laser alignment sensor 3 is installed on the detection mechanism of the testing machine body 1. An alignment component 2 is provided on the base of the testing machine body 1. The alignment component 2 includes an alignment block 21 and a connecting column 22. A guide groove 23 is formed on the lower surface of the alignment block 21. A guide block 24 is slidably arranged inside the guide groove 23. The top end of the connecting column 22 is fixedly connected to the lower surface of the guide block 24. A first thread is rotatably installed inside the guide groove 23. Rod 29, one end of the first threaded rod 29 is threaded through guide block 24. A groove 25 is provided on the upper surface of center block 21. A slider 26 is slidably mounted inside the groove 25. A second threaded rod 210 is rotatably mounted inside the groove 25. One end of the second threaded rod 210 is threaded through slider 26. A clamp mounting plate 27 is fixedly mounted on the upper surface of slider 26. Two first motors 288 for driving the first threaded rod 29 and the second threaded rod 210 are provided on the outer side of center block 21. A space is provided between the outer side of center block 21 and the two first motors 288. Two reduction gears 28 are provided for driving the first threaded rod 29 and the second threaded rod 210. The first threaded rod 29 rotates and moves on the guide block 24. The first threaded rod 29 drives the centering block 21 to move laterally on the guide block 24 through the guide groove 23. At the same time, the second threaded rod 210 drives the slider 26 to move in the slide groove 25. The slider 26 drives the fixture mounting plate 27 to move longitudinally. The fixture mounting plate 27 drives the test motor to move, so that the drive shaft of the test motor is aligned with the laser beam of the laser alignment sensor 3. This facilitates alignment adjustment. In the section, symmetrically distributed guide rods 211 are fixedly provided inside the guide groove 23. One end of the guide rod 211 movably passes through the guide block 24. The guide rod 211 can keep the guide block 24 moving stably. The bottom end of the connecting column 22 is fixedly provided with a mounting plate 212. The mounting plate 212 is installed on the base of the testing machine body 1. The centering component 2 can be installed on the base of the testing machine body 1 through the mounting plate 212. The first threaded rod 29 and the second threaded rod 210 are vertically distributed, so that the moving directions of the guide block 24 and the slider 26 are perpendicular.

[0019] The reduction gear assembly 28 includes a housing 281. Two housings 281 are vertically distributed and fixedly installed on the outside of the centering block 21. A drive shaft 282 rotatably passes through the outside of the housing 281. A first bevel gear 283 is movably sleeved on the outside of the drive shaft 282. One side of the first bevel gear 283 is fixedly installed on the inner wall of the housing 281. A second bevel gear 284 meshes with the outside of the first bevel gear 283. A connecting block 285 is rotatably provided on the side of the second bevel gear 284 near the drive shaft 282. One end of the connecting block 285 is fixedly connected to the end of the drive shaft 282 near the first bevel gear 283. The rotation of the second bevel gear 284 causes it to revolve around the first bevel gear 283. The revolve of the first bevel gear 283 drives the connecting block 285 to rotate, which in turn drives the drive shaft 282 to rotate. This reduces the output speed of the first motor 288. The second bevel gear 284 meshes with a third bevel gear 287 on its outer side. A rotating shaft 286 is fixedly inserted through the middle of the third bevel gear 287. One end of the rotating shaft 286 is rotatably mounted on the inner wall of the housing 281. The rotation of the third bevel gear 287 can drive the second bevel gear 284 to revolve around the first bevel gear 283. The rotating shaft 286 can drive the third bevel gear 287 to rotate. The first motor 288 is fixedly mounted on the outer side of the housing 281. The end of the output shaft of the first motor 288 movably passes through the housing 281 and is fixedly connected to one end of the rotating shaft 286. The first motor 288 can provide power for the rotation of the rotating shaft 286. One end of each of the two transmission shafts 282 movably passes through the centering block 21 and is fixedly connected to the ends of the first threaded rod 29 and the second threaded rod 210, respectively. The transmission shafts 282 can drive the first threaded rod 29 and the second threaded rod 210 to rotate.

[0020] Working principle: First, the test motor fixture is bolted onto the fixture mounting plate 27, and the test motor housing is fixed by the test motor fixture. Then, the laser alignment sensor 3 is activated, causing the emitter of the laser alignment sensor 3 to emit laser light to the end of the drive shaft of the test motor and reflect it to the receiver of the laser alignment sensor 3. At the same time, the test motor is started, causing the drive shaft of the test motor to rotate. If the position of the reflected light changes with the rotation of the test motor drive shaft, it indicates that there is a misalignment. Subsequently, the first motor 288 is started, causing the first motor 288 to start working. The end of the output shaft of the first motor 288 drives the rotating shaft 286 to rotate. The rotating shaft 286 drives the third bevel gear 287 to rotate. The third bevel gear 287 drives the second bevel gear 284 to rotate, causing the second bevel gear 284 to rotate in the first bevel gear 283. The drive shaft 282 revolves around the axis of the first bevel gear 283, which in turn drives the connecting block 285 to rotate around the axis of the drive shaft 282. The connecting block 285 drives the drive shaft 282 to rotate, and the two drive shafts 282 rotate the first threaded rod 29 and the second threaded rod 210 respectively. This causes the first threaded rod 29 to rotate and move on the guide block 24. The first threaded rod 29 drives the centering block 21 to move laterally on the guide block 24 through the guide groove 23. At the same time, the second threaded rod 210 drives the slider 26 to move in the slide groove 25. The slider 26 drives the fixture mounting plate 27 to move longitudinally. The fixture mounting plate 27 drives the test motor to move, so that the drive shaft of the test motor is aligned with the laser beam of the laser alignment sensor 3. At this time, the position of the reflected light remains relatively stable during the drive shaft process of the test motor, so that the drive shaft of the test motor is well aligned. This allows for adjustment of the position of the test motor for easy alignment.

[0021] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A universal coaxial adjustment device for fatigue testing machines, comprising the main body of the testing machine (1), characterized in that: A centering assembly (2) is provided on the base of the main body (1) of the testing machine. The centering assembly (2) includes a centering block (21) and a connecting column (22). A guide groove (23) is provided on the lower surface of the centering block (21). A guide block (24) is slidably provided inside the guide groove (23). The top end of the connecting column (22) is fixedly connected to the lower surface of the guide block (24). A first threaded rod (29) is rotatably installed inside the guide groove (23). One end of the first threaded rod (29) is threaded through the guide block (24). A sliding groove (25) is provided on the upper surface of the centering block (21). The slide (25) has a slider (26) inside, and a second threaded rod (210) is rotatably installed inside the slide (25). One end of the second threaded rod (210) is threaded through the slider (26). A clamp mounting plate (27) is fixedly provided on the upper surface of the slider (26). Two first motors (288) for driving the first threaded rod (29) and the second threaded rod (210) are provided on the outside of the centering block (21). Two speed reduction components (28) for transmitting the first threaded rod (29) and the second threaded rod (210) are provided between the outside of the centering block (21) and the two first motors (288).

2. The universal coaxial adjustment device for fatigue testing machines as described in claim 1, characterized in that, The deceleration assembly (28) includes a housing (281), two housings (281) are vertically distributed and fixedly installed on the outside of the centering block (21). A drive shaft (282) rotatably passes through the outside of the housing (281). A first bevel gear (283) is movably sleeved on the outside of the drive shaft (282). One side of the first bevel gear (283) is fixedly installed on the inner wall of the housing (281). A second bevel gear (284) meshes with the outside of the first bevel gear (283). A connecting block (285) is rotatably provided on the side of the second bevel gear (284) near the drive shaft (282). One end of the connecting block (285) is fixedly connected to the end of the drive shaft (282) near the first bevel gear (283).

3. The universal coaxial adjustment device for fatigue testing machines as described in claim 1, characterized in that, The guide groove (23) is fixedly provided with symmetrically distributed guide rods (211), one end of which movably passes through the guide block (24).

4. The universal coaxial adjustment device for fatigue testing machines as described in claim 2, characterized in that, The outer side of the second bevel gear (284) is meshed with a third bevel gear (287), and a rotating shaft (286) is fixedly passed through the middle of the third bevel gear (287). One end of the rotating shaft (286) is rotatably mounted on the inner wall of the housing (281).

5. The universal coaxial adjustment device for fatigue testing machines as described in claim 1, characterized in that, The bottom end of the connecting column (22) is fixedly provided with a mounting plate (212), which is installed on the base of the main body (1) of the testing machine.

6. The universal coaxial adjustment device for fatigue testing machines as described in claim 4, characterized in that, The first motor (288) is fixedly installed on the outside of the housing (281), and the end of the output shaft of the first motor (288) movably passes through the housing (281) and is fixedly connected to one end of the rotating shaft (286).

7. The universal coaxial adjustment device for fatigue testing machines as described in claim 2, characterized in that, One end of each of the two drive shafts (282) movably passes through the centering block (21) and is fixedly connected to the ends of the first threaded rod (29) and the second threaded rod (210), respectively.

8. The universal coaxial adjustment device for fatigue testing machines as described in claim 1, characterized in that, The first threaded rod (29) and the second threaded rod (210) are vertically distributed.

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