A pin coaxiality testing device

Abstract

This utility model discloses a pin coaxiality testing device, which relates to the field of pin coaxiality testing technology. It includes: a base, a support structure fixedly connected to the top of the base, a positioning structure and a testing structure slidably connected to the top of the base, a support frame, a lead screw rotatably connected to the inner wall of the support frame, a slide connected to the outer wall of the lead screw, a stabilizing rod fixedly connected to the bottom of the slide, a fixing rod fixedly connected to the top of the slide, and a support wheel rotatably connected to the outer wall of the fixing rod. In the support structure, the threaded transmission between the lead screw and the slide, combined with the guiding effect of the stabilizing rod, makes the slide slide more smoothly along the inner wall of the support frame, avoiding wobbling of the support wheel during height adjustment. Simultaneously, the support wheel rotates with the pin, effectively reducing friction during testing.

Description

Technical Field

[0001] This utility model relates to the field of pin coaxiality detection technology, and specifically to a pin coaxiality detection device. Background Technology

[0002] A pin is a standardized fastener mainly used to connect two or more components, enabling relative rotation or positioning between them. It is widely used in machinery, automobiles, construction machinery, chain drives, and other fields. In some positioning mechanisms, pins can be inserted into corresponding holes for precise positioning, ensuring accurate relative positions between components. The dimensional accuracy and surface roughness of the pin significantly affect its performance; higher accuracy results in better connection stability and rotational flexibility, effectively reducing wear and extending equipment lifespan. However, some adjustable pin coaxiality detection devices suffer from insufficient stability during adjustment, such as wobbling during support height adjustment. Furthermore, the positioning accuracy of the positioning structure is not high, leading to significant detection errors and making it difficult to guarantee accurate results. Therefore, to address these issues, improve the efficiency and quality of pin coaxiality detection, and reduce wear, this utility model was developed. Utility Model Content

[0003] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a pin coaxiality detection device, comprising: a base, a support structure fixedly connected to the top of the base, a positioning structure and a detection structure slidably connected to the top of the base, the support structure including a support frame, a lead screw rotatably connected to the inner wall of the support frame, a slide connected to the outer wall of the lead screw, a stabilizing rod fixedly connected to the bottom of the slide, a fixing rod fixedly connected to the top of the slide, and a support wheel rotatably connected to the outer wall of the fixing rod.

[0004] Preferably, the bottom of the support frame is fixedly connected to the top of the base, and the outer wall of the stabilizer is slidably connected to the inner wall of the support frame.

[0005] Preferably, the positioning structure includes a positioning slider, and a positioning rod is fixedly connected to the top of the positioning slider.

[0006] Preferably, a positioning top rod is fixedly connected to the inner wall of the positioning upright, and the positioning slider is fixedly connected to the base by bolts.

[0007] Preferably, the detection structure includes a detection slider, which is fixedly connected to the base by bolts. A detection rod is fixedly connected to the top of the detection slider, and a dial indicator is fixedly connected to the inner wall of the detection rod by bolts.

[0008] Preferably, the top of the base is provided with a positioning slide groove and a detection slide groove, the outer wall of the positioning slider is slidably connected to the outer wall of the positioning slide groove, and the outer wall of the detection slider is slidably connected to the outer wall of the detection slide groove.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. This utility model, by setting up a support structure, in which the threaded transmission of the lead screw and the slide is combined with the guiding action of the stabilizing rod, makes the slide slide more smoothly along the inner wall of the support frame, avoiding the shaking of the support wheel during the height adjustment process. At the same time, the support wheel rotates with the pin shaft, which can effectively reduce the friction during the test, ensure that the pin shaft remains stable during the support process, and reduce the test error caused by unstable support.

[0011] 2. This utility model, by setting a positioning structure, allows the positioning slider to slide along the positioning groove, flexibly adjusting its position according to the length of the pin. Combined with the positioning push rod aligned with the center hole at the end of the pin, it can accurately position both ends of the pin. Furthermore, the positioning slider is fixed to the base with bolts, effectively limiting the axial movement of the pin and ensuring reliable pin positioning during testing. This avoids testing deviations caused by loosening or offset of the positioning, significantly improving positioning accuracy. Attached Figure Description

[0012] Figure 1 This is the front view of this utility model;

[0013] Figure 2 This is a schematic diagram of the support structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the positioning structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the detection structure of this utility model.

[0016] In the diagram: 1. Base; 2. Support structure; 3. Positioning structure; 4. Detection structure; 11. Positioning slide; 12. Detection slide; 21. Support frame; 22. Lead screw; 23. Slide; 24. Stabilizing rod; 25. Fixing rod; 26. Support wheel; 31. Positioning slider; 32. Positioning upright; 33. Positioning top rod; 41. Detection slider; 42. Detection upright; 43. Dial indicator. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] Example:

[0019] Please see Figure 1 - Figure 2 This utility model provides a technical solution: a pin coaxiality detection device, comprising: a base 1, a support structure 2 fixedly connected to the top of the base 1, a positioning structure 3 and a detection structure 4 slidably connected to the top of the base 1, the support structure 2 including a support frame 21, a lead screw 22 rotatably connected to the inner wall of the support frame 21, a slide 23 threadedly connected to the outer wall of the lead screw 22, a stabilizing rod 24 fixedly connected to the bottom of the slide 23, a fixing rod 25 fixedly connected to the top of the slide 23, a support wheel 26 rotatably connected to the outer wall of the fixing rod 25, and the bottom of the support frame 21 being fixedly connected to the top of the base 1. Next, the outer wall of the stabilizer 24 is slidably connected to the inner wall of the support frame 21. The pin to be tested is placed on the support wheel 26 of the support structure 2. The support wheel 26 is fixed to the slide 23 by the fixing rod 25. Rotating the screw 22 causes the slide 23 to slide along the inner wall of the support frame 21, which drives the stabilizer 24 to slide synchronously. The support wheel 26 can rotate with the pin, reducing friction during testing. The stabilizer 24 ensures that the slide 23 moves smoothly and avoids the support wheel 26 from shaking and affecting the testing accuracy. The thread transmission of the screw 22 enables precise adjustment of the support height to adapt to the support requirements of pins with different diameters.

[0020] Please see Figure 3 The positioning structure 3 includes a positioning slider 31, a positioning rod 32 fixedly connected to the top of the positioning slider 31, and a positioning top rod 33 fixedly connected to the inner wall of the positioning rod 32. The positioning slider 31 is fixedly connected to the base 1 by bolts. According to the length of the pin, the positioning slider 31 of the positioning structure 3 is pushed to slide along the positioning groove 11 of the base 1, so that the positioning rod 32 drives the positioning top rod 33 to move to a suitable position. The positioning top rod 33 is aligned with the center hole at the end of the pin, and the bolts on the positioning slider 31 are tightened to fix it to the base 1. The positioning top rods 33 on both sides work together to tighten the two ends of the pin, restricting the axial movement of the pin. The positioning rod 32 provides stable support for the positioning top rod 33, ensuring that the two ends of the pin are reliably positioned during the testing process and avoiding testing errors caused by loosening.

[0021] Please see Figure 4The detection structure 4 includes a detection slider 41, which is fixedly connected to the base 1 by bolts. A detection rod 42 is fixedly connected to the top of the detection slider 41. A dial indicator 43 is fixedly connected to the inner wall of the detection rod 42 by bolts. The top of the base 1 is provided with a positioning groove 11 and a detection groove 12. The outer wall of the positioning slider 41 is slidably connected to the outer wall of the positioning groove 11, and the outer wall of the detection slider 41 is slidably connected to the outer wall of the detection groove 12. The detection slider 41 of the detection structure 4 is pushed to slide along the detection groove 12 of the base 1, so that the detection rod 42 drives the dial indicator 43 to move to the pin shaft to be tested. The fixed position of the dial indicator 43 on the inner wall of the detection rod 42 is adjusted so that the probe of the dial indicator 43 contacts the pin shaft surface and is pre-pressed for a certain stroke. The fixing bolts are tightened to fix the dial indicator 43 and the detection slider 41. When the pin is rotated, the dial indicator 43 can detect the radial runout of the pin surface in real time. By adjusting the detection groove 12 and the detection rod 42, different positions of the pin can be detected, improving the comprehensiveness of the detection.

[0022] Working principle:

[0023] In use, the base 1 serves as the foundation of the entire device, fixed to the ground. The pin to be tested is placed on the support wheel 26 of the support structure 2. The support wheel 26 is fixed to the slide 23 by the fixing rod 25. Rotating the screw 22 causes the slide 23 to slide along the inner wall of the support frame 21, driving the stabilizing rod 24 to slide synchronously. The support wheel 26 can rotate with the pin, reducing friction during testing. The stabilizing rod 24 ensures smooth movement of the slide 23, preventing the support wheel 26 from shaking and affecting the testing accuracy. The threaded transmission of the screw 22 enables precise adjustment of the support height to adapt to the support requirements of pins with different diameters. According to the length of the pin, the positioning slider 31 of the positioning structure 3 is pushed to slide along the positioning groove 11 of the base 1, causing the positioning rod 32 to drive the positioning top rod. Move the positioning rod 33 to a suitable position, align the positioning rod 33 with the center hole at the end of the pin, and tighten the bolt on the positioning slider 31 to fix it to the base 1. The positioning rods 33 on both sides work together to tighten both ends of the pin, restricting the axial movement of the pin. The positioning rod 32 provides stable support for the positioning rod 33, ensuring reliable positioning of both ends of the pin during the testing process and avoiding testing errors due to loosening. Push the detection slider 41 of the detection structure 4 to slide along the detection groove 12 of the base 1, so that the detection rod 42 drives the dial indicator 43 to move to the pin to be tested position. Adjust the fixed position of the dial indicator 43 on the inner wall of the detection rod 42 so that the probe of the dial indicator 43 contacts the pin surface and pre-presses a certain stroke. Tighten the fixing bolt to fix the dial indicator 43 and the detection slider 41. When the pin is rotated, the dial indicator 43 can detect the radial runout of the pin surface in real time. By adjusting the detection groove 12 and the detection rod 42, different positions of the pin can be tested, improving the comprehensiveness of the test.

[0024] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A pin coaxiality testing device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a support structure (2), and the top of the base (1) is slidably connected to a positioning structure (3) and a detection structure (4). The support structure (2) includes a support frame (21), a lead screw (22) is rotatably connected to the inner wall of the support frame (21), a slide (23) is threadedly connected to the outer wall of the lead screw (22), a stabilizing rod (24) is fixedly connected to the bottom of the slide (23), a fixing rod (25) is fixedly connected to the top of the slide (23), and a support wheel (26) is rotatably connected to the outer wall of the fixing rod (25).

2. The pin coaxiality detection device according to claim 1, characterized in that: The bottom of the support frame (21) is fixedly connected to the top of the base (1), and the outer wall of the stabilizer (24) is slidably connected to the inner wall of the support frame (21).

3. The pin coaxiality detection device according to claim 1, characterized in that: The positioning structure (3) includes a positioning slider (31), and a positioning rod (32) is fixedly connected to the top of the positioning slider (31).

4. The pin coaxiality detection device according to claim 3, characterized in that: The inner wall of the positioning rod (32) is fixedly connected to the positioning top rod (33), and the positioning slider (31) is fixedly connected to the base (1) by bolts.

5. The pin coaxiality detection device according to claim 1, characterized in that: The detection structure (4) includes a detection slider (41), which is fixedly connected to the base (1) by bolts. A detection rod (42) is fixedly connected to the top of the detection slider (41), and a dial indicator (43) is fixedly connected to the inner wall of the detection rod (42) by bolts.

6. The pin coaxiality detection device according to claim 5, characterized in that: The base (1) has a positioning groove (11) and a detection groove (12) on its top. The outer wall of the positioning groove (11) is slidably connected to the outer wall of the positioning slider (31), and the outer wall of the detection slider (41) is slidably connected to the outer wall of the detection groove (12).

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