Crack variation measuring device
By designing a crack change measurement device including a slide bar, a sliding sleeve, a cross bar, a lift seat, a measuring sleeve, a fixed plate, a laser rangefinder and a movable plate, the problem of observation errors in the detection of crack width change in the prior art is solved, and a high-precision and simple operation detection of crack width change is achieved.
Patent Information
- Application Number
- CN202422239734.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The existing crack width variation detection method has observation errors, which reduces measurement accuracy and is inconvenient to operate.
A crack change measurement device including a slide rod, a sliding sleeve, a cross rod, a lift seat, a measuring sleeve, a fixed plate, a laser rangefinder and a movable plate is designed. Through the cooperation of the slide rod and a sliding sleeve, the movement of the measurement sleeve and the use of a laser rangefinder are achieved to achieve accurate detection of the crack width.
The device can intuitively detect the change in crack width, improve measurement accuracy, reduce errors, simple operation, wide application range, and easy to use.
Smart Images
Figure CN223037067U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of road engineering, and particularly relates to a crack change amount measuring device. Background Technique
[0002] Crack detection is the inspection of the current situation of cracks. By detecting the current situation and drawing a crack distribution map, it provides a basis for crack analysis and hazard assessment. Commonly used instruments for crack appearance detection include scale magnifiers, crack comparison cards, etc. For crack depth, ultrasonic method or direct core drilling method is mainly used for detection.
[0003] The existing detection methods for crack width change mainly detect through scale magnifiers and crack comparison cards; especially when using a scale magnifier to observe and measure the crack width, due to a certain height difference between the scale magnifier and the crack, when the line of sight of the observer, the scale line and the crack are not kept on the same straight line, observation errors will occur, reducing the measurement accuracy, and also increasing the crack width change amount error, which has certain limitations and is inconvenient to use. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to overcome the existing defects, and provide a crack change amount measuring device, which has a simple structure, can be adjusted, can visually detect the width of the crack before and after the change, so as to obtain the change amount of the crack, has high measurement accuracy, small error, wide application range, simple operation, and is convenient to use, and can effectively solve the problems in the background technique.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: a crack change amount measuring device, including a sliding rod, both ends of the sliding rod are provided with sliding sleeves, the sliding sleeves are slidably arranged on a cross bar, the end of the cross bar is provided with a lifting seat, a measuring sleeve is slidably arranged on the sliding rod, a fixed plate is arranged at the bottom of one end of the measuring sleeve, and a movable plate is slidably arranged at the other end of the measuring sleeve. The measuring sleeve is provided with uniformly distributed scale lines, and the side of the fixed plate away from the movable plate is correspondingly arranged with the zero scale of the scale line.
[0006] As a preferred technical scheme of the utility model, the lifting seat includes telescopic rods installed at the bottoms of both ends of the cross bar, and a base is arranged at the bottom of the telescopic rods.
[0007] As a preferred technical scheme of the utility model, a fastening knob for fixing the length of the telescopic rod is arranged at the upper end of the side of the fixed end of the telescopic rod.
[0008] As a preferred technical scheme of the utility model, a linear bearing is arranged inside the sliding sleeve.
[0009] As a preferred technical solution of the present utility model, a laser rangefinder is provided at the top of the measurement sleeve corresponding to the fixed plate, and a positioning plate is provided at the top of the movable plate.
[0010] As a preferred technical solution of the present utility model, the surface of the positioning plate close to the laser rangefinder is flush with the surface of the movable plate away from the fixed plate.
[0011] Compared with the prior art, the beneficial effects of the present utility model are:
[0012] The crack change amount measuring device of the present utility model example has a simple structure, can be adjusted, can intuitively detect the width before and after the crack changes, thereby obtaining the crack change amount, has high measurement accuracy, small error, wide application range, simple operation and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the present utility model;
[0014] Figure 2 is a front view of the present utility model;
[0015] Figure 3 is Figure 2 a partial structural diagram of
[0016] In the figure: 1 sliding rod, 2 sliding sleeve, 3 cross bar, 31 telescopic rod, 32 base, 4 measurement sleeve, 5 fixed plate, 6 laser rangefinder, 7 movable plate, 8 positioning plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.
[0018] Please refer to Figures 1-3, the present utility model provides a technical solution: a crack change amount measuring device, including a sliding rod 1. Both ends of the sliding rod 1 are provided with sliding sleeves 2, and the sliding sleeves 2 are slidably arranged on a cross bar 3. The end of the cross bar 3 is provided with a lifting seat. A measuring sleeve 4 is slidably arranged on the sliding rod 1. A fixed plate 5 is provided at the bottom of one end of the measuring sleeve 4, and a movable plate 7 is slidably arranged at the other end of the measuring sleeve 4. The measuring sleeve 4 is provided with uniformly distributed scale lines, and the side of the fixed plate 5 away from the movable plate 7 is correspondingly arranged with the zero scale of the scale lines. Move the measuring sleeve 4 along the sliding rod 1, the measuring sleeve 4 drives the fixed plate 5 to move, and makes the fixed plate 5 contact with one end of the crack; move the movable plate 7 along the measuring sleeve 4, the movable plate 7 drives the positioning plate 8 to move, and makes the movable plate 7 move to the other end of the crack, and then observe the corresponding scale on the movable plate 7 to know the crack width.
[0019] Further, the lifting seat includes telescopic rods 31 installed at the bottoms of both ends of the cross bar 3. A base 32 is provided at the bottom of the telescopic rods 31. A fastening knob for fixing the length of the telescopic rods 31 is provided at the upper end of the side of the fixed end of the telescopic rods 31. Move the device to the upper side of the crack, move the measuring sleeve 4 along the sliding rod 1, and make both the fixed plate 5 and the movable plate 7 be located on the upper side between the cracks; adjust the length of the telescopic rods 31 to make both the fixed plate 5 and the movable plate 7 insert into the upper end inside the crack, and rotate the fastening knob to fix the length of the telescopic rods 31.
[0020] Further, a linear bearing is provided inside the sliding sleeve 2 to reduce the friction between the sliding sleeve 2 and the cross bar 3.
[0021] Further, a laser rangefinder 6 is provided at the top of the measuring sleeve 4 corresponding to the fixed plate 5, and a positioning plate 8 is provided at the top of the movable plate 7. By detecting the distance between the positioning plates 8 by the laser rangefinder 6, the crack width can be known.
[0022] Further, the surface of the positioning plate 8 close to the laser rangefinder 6 is flush with the surface of the movable plate 7 away from the fixed plate 5.
[0023] The laser rangefinder 6 and the like used in the present utility model are all common electronic components in the prior art, and their working methods and circuit structures are all well-known technologies, which will not be elaborated here.
[0024] When detecting the crack widths at two relatively close positions, after measuring the crack width at the first position, the sliding sleeve 2 can be directly slid along the cross bar 3, and the sliding sleeve 2 drives the measuring sleeve 4 to move to the position of the other measuring point through the sliding rod 1, and then measure again.
[0025] When in use:
[0026] Move the device to the upper side of the crack, move the measuring sleeve 4 along the sliding rod 1, and make both the fixed plate 5 and the movable plate 7 be located on the upper side between the cracks;
[0027] Adjust the length of the telescopic rod 31 so that both the fixed plate 5 and the movable plate 7 are inserted into the upper end inside the crack;
[0028] Move the measuring sleeve 4 along the sliding rod 1. The measuring sleeve 4 drives the fixed plate 5 to move and makes the fixed plate 5 contact with one end of the crack;
[0029] Move the movable plate 7 along the measuring sleeve 4. The movable plate 7 drives the positioning plate 8 to move and makes the movable plate 7 move to the other end of the crack. Then, observing the corresponding scale on the movable plate 7 can obtain the crack width;
[0030] Turn on the laser rangefinder 6. The laser rangefinder 6 detects the distance between the positioning plates 8 to obtain the crack width;
[0031] Measure the widths of the crack before and after the change by the same method as above, and then calculate the crack change amount.
[0032] The structure of the utility model is simple and adjustable, and can visually detect the widths of the crack before and after the change, so as to obtain the crack change amount. It has high measurement accuracy, small error, wide application range, simple operation and convenient use.
[0033] The parts not disclosed in the utility model are all prior arts, and their specific structures, materials and working principles will not be elaborated. Although the embodiments of the utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A crack change measurement device, comprising a slide bar (1), characterized in that: Both ends of the slide bar (1) are provided with a slide sleeve (2), the slide sleeve (2) is slidably arranged on a cross bar (3), a lifting seat is provided at the end of the cross bar (3), a measuring sleeve (4) is slidably arranged on the slide bar (1), a fixed plate (5) is provided at the bottom of one end of the measuring sleeve (4), and a movable plate (7) is slidably arranged at the other end of the measuring sleeve (4), the measuring sleeve (4) is provided with evenly distributed scale lines, and a side of the fixed plate (5) away from the movable plate (7) is arranged corresponding to the zero scale of the scale line.
2. The crack variation measuring device according to claim 1, characterized in that: The lifting seat comprises telescopic rods (31) mounted at the bottoms of both ends of the crossbar (3), and a base (32) is provided at the bottom of the telescopic rod (31).
3. The crack variation measuring device according to claim 2, characterized in that: A tightening knob for fixing the length of the telescopic rod (31) is provided at the upper end of the side surface of the fixed end of the telescopic rod (31).
4. The crack variation measuring device according to claim 1, characterized in that: A linear bearing is provided inside the sliding sleeve (2).
5. The crack variation measuring device according to claim 1, characterized in that: A laser rangefinder (6) is provided on the top of the measuring sleeve (4) corresponding to the fixed plate (5), and a positioning plate (8) is provided on the top of the movable plate (7).
6. The crack variation measuring device according to claim 5, characterized in that: The surface of the positioning plate (8) close to the laser rangefinder (6) is flush with the surface of the movable plate (7) away from the fixed plate (5).