Wear-resistant length detection device

Abstract

The invention 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] The invention relates to the technical field of detection devices, and in particular to a wear-resistant length detection device. Background Art

[0002] CN220230458U "A length detection device", the length detection device includes a guide rail, the guide rail is used to place the chain, a first positioning component is fixed at one end of the guide rail, the first positioning component is used to connect with one end of the chain, and a second positioning component is movably arranged at the other end of the guide rail, and the second positioning component is used to connect with the other end of the chain. The driving member has a telescopic end and a fixed end that are relatively arranged, and the telescopic end is connected to the second positioning component to drive the second component to move and can straighten the chain. The rangefinder is arranged on the first positioning component, and the rangefinder detects the length of the chain by detecting the distance between the first positioning component and the second positioning component. This technical solution can solve the problem of large measurement error of chain length in the prior art. However, during the magnetic particle inspection and calibration process, a scale ruler is often used to measure the sample or the magnetic field detection area. As the use cycle of the traditional scale ruler increases and it is surrounded by magnetic powder and magnetic suspension for a long time, the scale and the straightness of the ruler will be worn to varying degrees, which leads to inaccurate length measurement results. For this reason, we proposed a portable non-destructive testing device to solve the above problem. Summary of the invention

[0003] The invention discloses a wear-resistant length detection device, which is mostly suitable for the calibration of magnetic particle flaw detectors, assisting the calibration of flaw detectors during use, and measuring samples.

[0004] The technical solution of the present invention is as follows: a wear-resistant length detection device, comprising a scale 2, a base 1 and a baffle 3; the scale 2 is fixed before 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, the scale 2 and the baffle 3 are connected by a connecting component 4; a marking component 5 is arranged 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 limit block 45 and a pulley set 46; the cylindrical head 41 is provided with a plurality of cylindrical heads which are rotatably arranged on the base 1 respectively; the cylindrical heads 41 are connected by a pulley set 46; one end of the square rod 44 is fixedly mounted on the cylindrical head 41, and the other end is installed with a limit block 45; the connecting bolt 42 is arranged in the internal cavity of the base 1, and is sleeved on the outside of the square rod 44, and the two are in a sliding connection relationship and do not rotate relative to each other; the auxiliary nut 43 is fixedly mounted inside the base 1, located on the outside of the connecting bolt 42 and is threadedly connected to it.

[0007] The marking component 5 includes a marking rod 51, a push rod 52, a slide 53, a T-shaped block 54, a reset 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 the marking rod 51 is connected to the slide 53; one side of the slide 53 is connected to the T-shaped block 54, and the T-shaped block 54 is slidably connected to the base 1; the other side of the slide 53 is a cavity, the reset spring 55 is located in the internal cavity of the slide 53, and the two ends of the reset spring 55 are respectively connected to the push rod 52 and the slide 53; 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 contacts with the friction strip 58 to form a contact surface; in the initial state of the reset spring 55, the friction frame 56 and the friction strip 58 contact each other.

[0008] The scale 2 is provided with holes for passing the connecting bolts 42 , and the connecting bolts 42 pass through the scale 2 and are threadedly connected to the baffle 3 .

[0009] The contact surface is provided with friction lines for enhancing the friction force between the contact surface and the friction strip 58 , and the position of the marking rod 51 is locked by the friction force formed by the friction lines.

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

[0011] The beneficial effects of the present invention are as follows: by providing a base and a baffle to wrap the scale, the rigidity of the overall structure is enhanced, bending of the scale during use is avoided, and the scale surface on the scale is prevented from being worn, so as to increase the service life of the overall device, while ensuring the accuracy of the detection results of the overall device.

[0012] By providing a connecting assembly, the connection steps between the base, the scale and even the baffle are simplified, so as to facilitate the process of replacing the scale when the scale is excessively worn. The connecting bolts in the connecting assembly use the surface thread to increase the friction force, thereby ensuring the stability of the overall device structure, avoiding the phenomenon of parts falling off during use, and further improving the overall performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the overall structure of the present invention;

[0014] Figure 2 It is a first cutaway schematic diagram of the overall structure of the present invention;

[0015] Figure 3 It is a schematic diagram of the structure of the pulley assembly of the present invention;

[0016] Figure 4 It is a second cutaway schematic diagram of the overall structure of the present invention;

[0017] Figure 5 It is a schematic diagram of the friction frame and friction strip structure of the present invention.

[0018] Among them: 1. base; 11. observation window; 12. hanging ring; 2. scale; 3. baffle; 4. connecting assembly; 41. cylindrical head; 42. connecting bolt; 43. auxiliary nut; 44. square rod; 45. limit block; 46. pulley assembly; 5. marking assembly; 51. marking rod; 52. push rod; 53. slide seat; 54. T-block; 55. reset spring; 56. friction frame; 57. connecting frame; 58. friction strip. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] The wear-resistant length detection device comprises: a scale 2 for length measurement detection, and a base 1 and a baffle 3 that wrap the front and back sides of the scale, and the base 1 is also provided with a connecting component 4 and a marking component 5; the connecting component 4 comprises a cylindrical head 41 rotatably arranged on the base, a connecting bolt 42 arranged in the inner cavity of the base, an auxiliary nut 43 fixedly installed inside the base and threadedly connected with the connecting bolt, and a square rod 44 fixedly installed on the cylindrical head. The present invention can effectively solve the degree of ruler wear in daily magnetic particle detection, and improve the service life and measurement accuracy of the ruler.

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

[0022] 1. Measuring mechanism: The measuring structure is composed of a high-precision scale 2, a base 1 and a baffle 3. Through the connecting assembly 4 and the marking assembly 5 on the base 1, the connecting bolt 42 in the inner cavity of the base 1 is fixedly installed inside the base 1 and connected to the auxiliary nut 43, the square rod 44, the limit block 45 and the pulley group 46 in another inner cavity;

[0023] 2. Observation mechanism: It is composed of a marking component 5. The marking component 5 includes a marking rod 51 for marking the measured value according to the 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 whose two ends are respectively fixedly connected to the push rod 52 and the slide 53, a connection frame 57 fixedly connected to the push rod 52, a friction frame 56 fixedly connected to the push rod 52 through the connection frame 57, and a friction strip 58 fixedly connected to the base 1.

[0024] See also Figure 1-5 The invention includes a ruler 2 for length measurement and detection, and a base 1 and a baffle 3 that wrap the front and back sides of the ruler 2. The base 1 is also provided with a connecting component 4 and a marking component 5; an observation window 11 for observing the scale value on the ruler 2 is opened on the base 1, 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, and the hanging ring 12 can facilitate the storage of the overall structure and even the subsequent carrying, thereby improving the performance of the overall device.

[0025] The connecting assembly 4 includes a cylindrical head 41 rotatably arranged on the base 1, a connecting bolt 42 arranged in the internal cavity of the base 1, an auxiliary nut 43 fixedly installed in the base 1 and threadedly connected to the connecting bolt 42, a square rod 44 fixedly installed on the cylindrical head 41, a limit block 45 fixedly installed at the end of the square rod 44, and a pulley group 46 also arranged in another internal cavity of the base 1; a hole for passing the connecting bolt 42 is provided on the scale 2, 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 limit block 45 is located inside the connecting bolt 42, and there are two cylindrical heads 41 in total, and the two cylindrical heads 41 are connected through a pulley group 46.

[0026] The marking assembly 5 includes a marking rod 51 for marking the measured value 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 to the push rod 52 and the slide 53 at both ends, 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 fixedly connected to the base 1. The base 1 is slidably connected, and the friction frame 56 can contact with the friction strip 58 to form a contact surface, and a friction pattern is provided on the contact surface to enhance the friction force between the friction strip 58 and the marking rod 51. The position of the marking rod 51 can be locked by the friction force formed by the friction pattern, so as to ensure the marking effect of the marking rod 51. The reset spring 55 is located in the internal cavity of the slide 53, and in the initial state of the reset spring 55, the friction frame 56 and the friction strip 58 are in contact with each other. The establishment of structures such as the marking rod 51 can facilitate the user to observe the scale value on the scale 2, which is convenient for actual detection.

[0027] Working principle: After the cylindrical head 41 is set on the base 1 by rotating, the square rod 44 fixedly connected to the cylindrical head 41 rotates synchronously in the internal cavity of the base 1, and the square rod 44 and the connecting bolt 42 are in a sliding connection relationship, so the connecting bolt 42 rotates synchronously, and because the auxiliary nut 43 fixed inside the base 1 is threadedly connected to the square rod 44, as the cylindrical head 41 rotates, the connecting bolt 42 will be screwed out from the inside of the base 1, pass through the scale 2, and then screwed into the inside of the baffle 3 to connect the scale 2 and the baffle 3 to the base 1, and at the same time wrap the scale 2 between the baffle 3 and the base 1. When the baffle 3 needs to be removed or replaced, it is only necessary to rotate the cylindrical head 41 in the opposite direction, and the connecting bolt 42 will be screwed out from the inside of the baffle 3. At the same time, multiple cylindrical heads 41 can be connected through a pulley set 46 for transmission, and then after a single cylindrical head 41 rotates, all the connecting bolts 42 contained in the base 1 rotate synchronously, so as to achieve the purpose of simplifying the connection steps between the overall structure.

[0028] When measuring and testing the actual length, it is only necessary to observe the scale on the scale 2 through the observation window 11 on the base 1. When it is necessary to mark and record the length value, the push rod 52 slidably connected to the slide 53 is pushed, and the friction frame 56 fixedly connected to the push rod 52 through the connecting frame 57 slides synchronously. At this time, a gap can be generated between the friction frame 56 and the friction strip 58 fixed on the base 1. 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 with it, thereby changing the position of the marking rod 51, and then referring to the scale on the scale 2, slide to After reaching the predetermined position, the push rod 52 is released, and under the action of the return spring 55 fixedly connected to the slide seat 53 and the push rod 52 at both ends, the push rod 52 slides in the direction away from the slide seat 53. At this time, the friction frame 56 slides synchronously to eliminate 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 patterns on the friction frame 56 and the friction strip 58 interact with each other to form a friction force that can limit the sliding of structures such as the friction frame 56, the push rod 52, the slide seat 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 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 comprises 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); The base (1), the scale (2) and the baffle (3) are connected via a connecting component (4); a marking component (5) is arranged inside the base (1); The connecting assembly (4) comprises a columnar head (41), a connecting bolt (42), an auxiliary nut (43), a square rod (44), a stop block (45) and a pulley group (46); the columnar head (41) is provided with a plurality of columns which are rotatably arranged on the base (1); the columnar heads (41) are connected via a pulley group (46); one end of the square rod (44) is fixedly mounted on the columnar head (41), and the other end is provided with a stop block (45); the connecting bolt (42) is arranged in the inner cavity of the base (1) and is sleeved on the outer side of the square rod (44), and the two are in a sliding connection relationship and do not rotate relative to each other; the auxiliary nut (43) is fixedly mounted inside the base (1), located on the outer side of 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 assembly (5) comprises a marking rod (51), a push rod (52), a slide seat (53), a T-shaped 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 the marking rod (51) is connected to the slide seat (53); one side of the slide seat (53) is connected to the T-shaped block (54), and the T-shaped block (54) is slidably connected to the base (1); the other side of the slide seat (53) The backrest (55) is a hollow cavity, the backrest (55) is located in the inner cavity of the slide seat (53), and the two ends of the backrest (55) are respectively connected to the push rod (52) and the slide seat (53); 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) are in contact with each other to form a contact surface; in the initial state of the backrest (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 holes for passing connecting bolts (42), and the connecting bolts (42) pass through the scale (2) and are 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 lines for enhancing the friction force between the contact surface and the friction strip (58), and the position of the marking rod (51) is locked by the friction force formed by the friction lines.

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

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