Wear-resistant length detection device

Abstract

The utility model belongs to the technical field of detection devices, and discloses a wear-resistant length detection device. By arranging the base and the baffle to wrap the graduated scale, the rigidity of the whole structure is enhanced, the condition that the graduated scale is bent in the using process is avoided, the scale surface on the graduated scale can be prevented from being abraded, the service life of the whole device is prolonged, and meanwhile the accuracy degree of the detection result of the whole device is guaranteed. By arranging the connecting assembly, the connecting steps among the base, the graduated scale and the baffle are simplified, so that the graduated scale is abraded excessively, the graduated scale is replaced, connecting bolts in the connecting assembly utilize surface threads to increase friction force, and the stability of the whole device structure is guaranteed; and the phenomenon that parts fall off in the using process is avoided, and the overall using performance is further improved.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, specifically to a wear-resistant length detection device. Background Technology

[0002] CN220230458U, "A Length Detection Device," includes a guide rail for holding a chain, a first positioning component fixed to one end of the guide rail and connected to one end of the chain, and a second positioning component movably disposed at the other end of the guide rail and connected to the other end of the chain. A driving component has a telescopic end and a fixed end disposed opposite to each other; the telescopic end is connected to the second positioning component to drive the second component to move and straighten the chain. A rangefinder is disposed on the first positioning component and detects the chain length by detecting the distance between the first and second positioning components. This technical solution can solve the problem of large measurement errors in chain length in existing technologies. However, in the process of magnetic particle testing and calibration, graduated rulers are often used to measure samples or magnetic field testing areas. As the service life of traditional graduated rulers increases and they are exposed to magnetic powder and magnetic suspension for a long time, the straightness of the scale and the ruler body will be worn to varying degrees, resulting in inaccurate length measurement results. To address this issue, we propose a portable non-destructive testing device. Utility Model Content

[0003] This utility model discloses a wear-resistant length detection device, which is widely applicable to the calibration of magnetic particle flaw detectors, assisting in the calibration of flaw detectors during use, and sample measurement.

[0004] The technical solution of this utility model is as follows: A wear-resistant length detection device includes a scale 2, a base 1 and a baffle 3; the scale 2 is fixed in front of the base 1 and the baffle 3; the base 1 is provided with an observation window 11 for observing the scale value on the scale 2;

[0005] The base 1, scale 2 and baffle 3 are connected by a connecting component 4; a marking component 5 is provided inside the base 1;

[0006] The connecting assembly 4 includes a cylindrical head 41, a connecting bolt 42, an auxiliary nut 43, a square rod 44, a limiting block 45, and a pulley set 46. Multiple cylindrical heads 41 are rotatably mounted on the base 1. The cylindrical heads 41 are connected by the pulley set 46. One end of the square rod 44 is fixedly mounted on the cylindrical head 41, and the other end is mounted on the limiting block 45. The connecting bolt 42 is located in the internal cavity of the base 1, sleeved on the outside of the square rod 44, and the two are in a sliding connection relationship, not rotating relative to each other. The auxiliary nut 43 is fixedly mounted inside the base 1, located outside the connecting bolt 42, and threadedly connected to it.

[0007] The marking component 5 includes a marking rod 51, a push rod 52, a slide block 53, a T-block 54, a return spring 55, a friction frame 56, a connecting frame 57, and a friction strip 58. The marking rod 51 is located inside the observation window 11, with one end connected to the slide block 53. One side of the slide block 53 is connected to the T-block 54, which is slidably connected to the base 1. The other side of the slide block 53 is a cavity, and the return spring 55 is located in the cavity inside the slide block 53. The two ends of the return spring 55 are connected to the push rod 52 and the slide block 53, respectively. The push rod 52 is connected to the friction frame 56 through the connecting frame 57. The friction strip 58 is fixedly connected to the base 1. The friction frame 56 and the friction strip 58 contact to form a contact surface. In the initial state, the friction frame 56 and the friction strip 58 are in contact with each other.

[0008] The scale 2 has a hole for the connecting bolt 42 to pass through, and the connecting bolt 42 passes through the scale 2 and is threadedly connected to the baffle 3.

[0009] The contact surface is provided with friction patterns to enhance the friction between the friction strip 58 and the friction force generated by the friction patterns to lock the position of the marking rod 51.

[0010] A hanging ring 12 is provided on the side of the base 1.

[0011] The beneficial effects of this utility model are as follows: by setting a base and baffle to wrap the scale, the rigidity of the overall structure is enhanced, the bending of the scale during use is prevented, and the scale surface on the scale is also prevented from being worn, thereby increasing the service life of the overall device and ensuring the accuracy of the overall device's test results.

[0012] By setting up connecting components, the connection steps between the base, scale, and even the baffle are simplified, making it easier to replace the scale when it is worn out. Furthermore, the connecting bolts in the connecting components use surface threads to increase friction, ensuring the stability of the overall device structure and preventing parts from falling off during use, thus further improving the overall performance. Attached Figure Description

[0013] Figure 1 This is an exploded view of the overall structure of this utility model;

[0014] Figure 2 This is a first cross-sectional view of the overall structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the pulley assembly structure of this utility model;

[0016] Figure 4 This is a second sectional view of the overall structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the friction frame and friction strip structure of this utility model.

[0018] The components are as follows: 1. Base; 11. Observation window; 12. Hanging ring; 2. Scale; 3. Baffle; 4. Connecting assembly; 41. Column head; 42. Connecting bolt; 43. Auxiliary nut; 44. Square rod; 45. Limiting block; 46. Pulley assembly; 5. Marking assembly; 51. Marking rod; 52. Push rod; 53. Slide; 54. T-block; 55. Return spring; 56. Friction frame; 57. Connecting frame; 58. Friction strip. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] This wear-resistant length measuring device includes: a scale 2 for length measurement, a base 1 and a baffle 3 that wrap around both sides of the scale, and a connecting component 4 and a marking component 5 on the base 1. The connecting component 4 includes a cylindrical head 41 rotatably mounted on the base, a connecting bolt 42 located in the internal cavity of the base, an auxiliary nut 43 fixedly installed inside the base and threadedly connected to the connecting bolt, and a square rod 44 fixedly mounted on the cylindrical head. This invention can effectively solve the problem of ruler wear in daily magnetic particle testing, and improve the ruler's service life and measurement accuracy.

[0021] The implementation plan for the wear-resistant length detection device is as follows:

[0022] 1. Measuring Mechanism: The measuring structure consists of a high-precision scale 2, a base 1, and a baffle 3. It is connected to an auxiliary nut 43, a square rod 44, a limiting block 45, and a pulley assembly 46 in another internal cavity, which are fixedly installed inside the base 1 by a connecting assembly 4 and a marking assembly 5 on the base 1.

[0023] 2. Observation Mechanism: Composed of Marking Component 5. Marking Component 5 includes a marking rod 51 for marking measurement values ​​according to a scale, a slide 53 fixedly connected to the marking rod 51, a push rod 52 slidably connected to the slide 53, a T-shaped block 54 fixedly installed on the side of the slide 53, a return spring 55 fixedly connected at both ends to the push rod 52 and the slide 53 respectively, a connecting frame 57 fixedly connected to the push rod 52, a friction frame 56 fixedly connected to the push rod 52 through the connecting frame 57, and a friction strip 58 fixedly connected to the base 1.

[0024] See Figure 1-5 The utility model includes a ruler 2 for length measurement and detection, a base 1 and a baffle 3 that wrap the front and back of the ruler 2. The base 1 is also provided with a connecting component 4 and a marking component 5. The base 1 has an observation window 11 for observing the scale value on the ruler 2, and the marking rod 51 is located inside the observation window 11. A hanging ring 12 is provided on the side of the base 1. The hanging ring 12 can facilitate the storage of the whole structure and even subsequent carrying, thereby improving the performance of the whole device.

[0025] The connecting assembly 4 includes a cylindrical head 41 rotatably mounted on the base 1, a connecting bolt 42 located in the internal cavity of the base 1, an auxiliary nut 43 fixedly mounted inside the base 1 and threadedly connected to the connecting bolt 42, a square rod 44 fixedly mounted on the cylindrical head 41, a limiting block 45 fixedly mounted at the end of the square rod 44, and a pulley assembly 46 also located in another internal cavity of the base 1; the scale 2 has a hole for the connecting bolt 42 to pass through, and the connecting bolt 42 can pass through the scale 2 and be threadedly connected to the baffle 3; the square rod 44 is slidably connected to the connecting bolt 42, and the limiting block 45 is located inside the connecting bolt 42; there are two cylindrical heads 41, and the two cylindrical heads 41 are connected by a pulley assembly 46.

[0026] The marking component 5 includes a marking rod 51 for marking measurement values ​​according to the scale 2, a slide 53 fixedly connected to the marking rod 51, a push rod 52 slidably connected to the slide 53, a T-shaped block 54 fixedly installed on the side of the slide 53, a return spring 55 fixedly connected at both ends to the push rod 52 and the slide 53 respectively, a connecting frame 57 fixedly connected to the push rod 52, a friction frame 56 fixedly connected to the push rod 52 through the connecting frame 57, and a friction strip 58 fixedly connected to the base 1. The slide 53 is slidably connected to the base 1 through the T-shaped block 54, and the push rod 52 is also slidably connected to the base 1 through the T-shaped block 54. The base 1 is slidably connected, and the friction frame 56 can contact the friction strip 58 to form a contact surface. The contact surface is provided with friction patterns to enhance the friction between the friction frame and the friction strip 58. The position of the marking rod 51 can be locked by the friction force formed by the friction patterns, thereby ensuring the marking effect of the marking rod 51. The return spring 55 is located in the internal cavity of the slide 53. In the initial state of the return spring 55, the friction frame 56 and the friction strip 58 are in contact with each other. The establishment of the marking rod 51 and other structures makes it convenient for users to observe the scale value on the scale 2, which is convenient for actual testing.

[0027] Working principle: By rotating the cylindrical head 41, which is movably mounted on the base 1, the square rod 44, which is fixedly connected to the cylindrical head 41, rotates synchronously in the cavity inside the base 1. The square rod 44 and the connecting bolt 42 are in a sliding connection relationship, so the connecting bolt 42 rotates synchronously. Since the auxiliary nut 43, which is fixed inside the base 1, is threadedly connected to the square rod 44, the connecting bolt 42 will unscrew out from inside the base 1 as the cylindrical head 41 rotates, pass through the scale 2, and then screw into the baffle 3 to connect the scale 2 and the baffle 3 to the base 1. At the same time, the scale 2 is wrapped between the baffle 3 and the base 1. When it is necessary to remove or replace the baffle 3, simply rotate the cylindrical head 41 in the opposite direction, and the connecting bolt 42 will unscrew out from inside the baffle 3. At the same time, multiple cylindrical heads 41 can be connected by a belt pulley set 46. Thus, when a single cylindrical head 41 rotates, all the connecting bolts 42 contained in the base 1 rotate synchronously, thereby simplifying the connection steps between the overall structures.

[0028] In actual length measurement and testing, it is only necessary to observe the scale on the ruler 2 through the observation window 11 on the base 1. When it is necessary to mark and record the length value, push the push rod 52, which is slidably connected to the slide 53, and the friction frame 56, which is fixedly connected to the push rod 52 through the connecting frame 57, slides synchronously. At this time, a gap is created between the friction frame 56 and the friction strip 58 fixed on the base 1. Then, when the push rod 52 is pushed to slide on the base 1, the slide 53 slides synchronously on the base 1, and the marking rod 51 fixed on the slide 53 slides along with it, thereby changing the position of the marking rod 51. Then, referring to the scale on the ruler 2, slide to After the predetermined position is reached, the push rod 52 is released. Under the action of the return spring 55, which is fixedly connected to the slide 53 and the push rod 52 at both ends respectively, the push rod 52 slides away from the slide 53. At this time, the friction frame 56 slides synchronously, eliminating the gap between it and the friction strip 58, so that the friction frame 56 contacts the friction strip 58. At this time, the friction texture on the friction frame 56 and the friction strip 58 interacts to form a frictional force that can limit the sliding of the friction frame 56, the push rod 52, the slide 53 and even the marking rod 51, thereby locking the position of the marking rod 51. At this time, the user can complete the recording of the length measurement and detection structure according to the value pointed to by the marking rod 51.

Claims

1. A wear-resistant length detection device, characterized in that, The wear-resistant length detection device includes a scale (2), a base (1), and a baffle (3); the scale (2) is fixed between the base (1) and the baffle (3); the base (1) is provided with an observation window (11) for observing the scale value on the scale (2); The base (1), scale (2), and baffle (3) are connected by a connecting component (4); a marking component (5) is provided inside the base (1); The connecting assembly (4) includes a cylindrical head (41), a connecting bolt (42), an auxiliary nut (43), a square rod (44), a limiting block (45), and a pulley set (46); multiple cylindrical heads (41) are respectively rotatably mounted on the base (1); the cylindrical heads (41) are connected by the pulley set (46); one end of the square rod (44) is fixedly installed on the cylindrical head (41), and the other end is installed with the limiting block (45); the connecting bolt (42) is located in the cavity inside the base (1), and is sleeved on the outside of the square rod (44). The two are in a sliding connection relationship and do not rotate relative to each other; the auxiliary nut (43) is fixedly installed inside the base (1), located outside the connecting bolt (42), and is threadedly connected to it.

2. The wear-resistant length detection device according to claim 1, characterized in that, The marking component (5) includes a marking rod (51), a push rod (52), a slide (53), a T-block (54), a return spring (55), a friction frame (56), a connecting frame (57), and a friction strip (58); the marking rod (51) is located inside the observation window (11), and one end of it is connected to the slide (53); one side of the slide (53) is connected to the T-block (54), and the T-block (54) is slidably connected to the base (1); the other side of the slide (53) The cavity is a return spring (55) located in the inner cavity of the slide (53). The two ends of the return spring (55) are connected to the push rod (52) and the slide (53) respectively. The push rod (52) is connected to the friction frame (56) through the connecting frame (57). The friction strip (58) is fixedly connected on the base (1). The friction frame (56) and the friction strip (58) are in contact to form a contact surface. In the initial state of the return spring (55), the friction frame (56) and the friction strip (58) are in contact with each other.

3. The wear-resistant length detection device according to claim 2, characterized in that, The scale (2) is provided with a hole for the connecting bolt (42) to pass through, and the connecting bolt (42) passes through the scale (2) and is threadedly connected to the baffle (3).

4. The wear-resistant length detection device according to claim 2, characterized in that, The contact surface is provided with friction patterns to enhance the friction between the friction strip (58) and the friction force generated by the friction patterns to lock the position of the marking rod (51).

5. The wear-resistant length detection device according to any one of claims 1-4, characterized in that, A hanging ring (12) is provided on the side of the base (1).

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