Crack width gauge for bridge detection

Abstract

The utility model discloses a crack width gauge for bridge detection, and relates to the technical field of bridge crack detection. The width measuring instrument comprises a width measuring instrument body, the upper surface of the width measuring instrument body is provided with a winding assembly, the winding assembly comprises a connecting plate connected to the upper surface of the width measuring instrument body, the upper surface of the connecting plate is symmetrically connected with connecting rods, and the upper end of a winding rod fixedly connected with the upper ends of the connecting rods is fixedly connected with an ejector rod; the other end of the cable connected with the upper surface of the width gauge body is connected with a camera assembly. According to the utility model, the winding assembly is arranged to wind an unfolded cable, a worker can conveniently carry the width gauge body, the cable is effectively prevented from being wound, the cable can be conveniently unfolded again, and the camera assembly is arranged to conveniently adjust the position of a camera on a bridge through the movement of a ball, so that cracks at different positions on the bridge can be conveniently detected. And the abrasion of the camera shooting assembly in the use process is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge crack detection, in particular to a crack width measuring instrument used for bridge detection. Background Art

[0002] The purpose of bridge crack detection is to evaluate the structural health of the bridge, discover potential safety hazards, and provide a scientific basis for maintenance and protection. By detecting bridge cracks, we can understand information such as the bridge's load-bearing capacity, service life, and weak links, so as to formulate targeted maintenance measures. In the process of bridge crack detection, a crack width gauge is required. A crack width gauge refers to a professional instrument used to detect crack width and surface microscopic defects in concrete structures.

[0003] A search revealed a patent document with the patent publication number CN210441825U, which discloses a crack width gauge for bridge inspection. This device relates to the field of measuring equipment technology and aims to address the high labor costs in existing technologies. The key technical aspects of the device are: a width gauge body, a display screen mounted on the body, and a camera. The display screen is equipped with a scale. One end of the camera is connected to the display via a cable, and the other end of the camera is equipped with a measuring lens for recording images. The camera is cylindrical, and a fixed ring is mounted on the outer wall of the camera and slides along its axis. The fixed ring is rotatably mounted with at least three brackets for supporting the camera. The brackets support the camera, eliminating the need for staff to constantly hold the camera in their hands, effectively reducing labor costs.

[0004] However, it still has the following disadvantages in actual use:

[0005] The above-mentioned crack width gauge for bridge inspection is provided with a display screen and a camera on the width gauge body, a scale is provided on the display screen, one end of the camera is connected to the display screen via a cable, and the other end of the camera is provided with a measuring lens for taking pictures. The provided cable facilitates the workers to adjust the position of the measuring lens on the bridge and measure cracks at different positions of the bridge. However, it is inconvenient to reel in the unfolded cable, which brings inconvenience to the workers in carrying the width gauge body. The cable may even get tangled, making it inconvenient to unfold the cable again, affecting the reuse of the width gauge body.

[0006] 2. The above-mentioned crack width gauge for bridge inspection, the camera is cylindrical, and a fixing ring is provided on the outer wall of the camera and slides along the axial direction of the camera, and a plurality of grooves are provided on the outer wall of the fixing ring along its circumference. In this embodiment, three grooves are provided, and the grooves extend to the bottom end of the fixing ring, and the two inner walls of the grooves are arranged opposite to each other and are rotatably connected to a connecting block by a rotating shaft. The end of the connecting block away from the rotating shaft is connected to a bracket, and the bracket is in an arc shape that fits the camera, and a limiting block is fixedly connected on the outer wall of the camera and above the fixing ring. The limiting block is annular and is sleeved on the outer wall of the camera for limiting the position of the fixing ring to prevent the fixing ring from separating from the camera during movement. A card slot is provided at one end of the bracket along the circumference of the camera, and there are two card slots, and the two card slots are arranged along the axial direction of the camera. The other end of the bracket is provided with a card block that is engaged with the card slot. Specifically, the card block is hemispherical. The cam is secured to the rear of the camera head and is secured to the rear of the camera head with a plurality of teeth disposed on the inner wall of the camera head. And there is no contact between the measuring lens and the crack, which can avoid scratches on the measuring lens during long-term use. When the crack width gauge is not in use, rotate the bracket and, at the same time, move the fixing ring and the bracket upwards so that the fixing ring is against the limit block, and the inner walls of the three brackets are all in contact with the outer walls of the camera. The ends of the two adjacent brackets facing each other are in contact, and the card blocks are extended into the corresponding card slots, which can firmly fix the brackets. At this time, the protective cover is put on the measuring lens to protect the measuring lens, which can prevent external dust from adhering to the surface of the measuring lens, and can further improve the accuracy of the crack width gauge. However, when the camera is performing bridge crack detection, the three brackets are in direct contact with the bridge, resulting in greater friction. Moving the bracket directly on the bridge will cause greater wear, which brings inconvenience to the movement of the camera and the detection of cracks at different positions on the bridge, and even reduces the service life of the bracket.

[0007] To this end, we provide a crack width gauge for bridge inspection to solve the above problems. Utility Model Content

[0008] The purpose of the present utility model is to provide a crack width gauge for bridge inspection. By setting a winding component, the unfolded cable is wound up, which makes it convenient for staff to carry the width gauge body and effectively prevents the cable from being entangled. In addition, a camera component is set to facilitate the adjustment of the position of the camera on the bridge by moving the ball, which is convenient for crack detection at different positions of the bridge and reduces the wear of the camera component when detecting bridge cracks, thereby solving the technical problems raised in the background technology of the above-mentioned crack width gauge for bridge inspection.

[0009] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0010] The utility model is a crack width gauge for bridge inspection, comprising a width gauge body, a winding assembly provided on the upper surface of the width gauge body, the winding assembly including a connecting plate connected to the upper surface of the width gauge body, the upper surface of the connecting plate is symmetrically connected with a connecting rod, the upper end of the connecting rod is fixedly connected to the upper end of the winding rod is fixedly connected to a top rod; the other end of the cable connected to the upper surface of the width gauge body is connected to a camera assembly, the camera assembly includes a screw plug connected to the other end of the cable, a connecting sleeve is sleeved on the peripheral side wall of the camera connected to the lower surface of the screw plug, the lower surface of the connecting sleeve is threadedly connected to the lower surface of the connecting seat with a ball, and the lower surface of the camera is provided with a measuring lens.

[0011] The present invention is further configured such that a display screen is provided on the side wall of the width measuring instrument body, and a scale is provided on the side wall of the display screen.

[0012] The present invention is further configured such that a transparent plate is embedded in the interior of the protective frame provided on the outer side of the display screen, and the lower surface of the protective frame is hinged to the side wall of the width gauge body through a hinge.

[0013] The present invention is further configured such that the ear block fixed to the upper surface of the protective frame is away from the hinge, and the bolt threadedly connected on the outer side wall of the ear block is threadedly connected to the outer side wall of the width gauge body.

[0014] The utility model is further configured such that a limiting nut is threadedly connected to the peripheral side wall of the convex rod to which the upper end of the push rod is fixed, an anti-slip sleeve is sleeved on the outer side wall of the handle arranged above the connecting plate, the upper end of the push rod passes through the lower surface of the handle, and the limiting nut is abutted against the upper surface of the handle.

[0015] The present invention is further configured such that a hidden component is provided on the other side wall of the width gauge body, and the hidden component includes a placement plate provided on the other side wall of the width gauge body, the position of the placement plate corresponds to the position of the display screen, and a storage tube is fixedly connected to the outer side wall of the placement plate.

[0016] The utility model is further configured such that a guide rail and a slide rail are connected to the other side wall of the width gauge body, the upper end of the screw fixed to the upper surface of the mounting plate passes through the lower surface of the guide rail, the locking nut threadedly connected on the peripheral side wall of the screw is resting on the upper surface of the guide rail, and the slide rod fixed to the lower surface of the mounting plate is slidably connected to the inside of the slide rail.

[0017] The utility model is further configured such that a screw cover is threadedly connected to the lower surface of the storage tube, and a rubber pad is provided on the upper surface of the screw cover.

[0018] The utility model has the following beneficial effects:

[0019] The utility model provides a winding component, and the staff will wind the cable around two winding rods, which can prevent the cable from being tangled to a certain extent, make it convenient for the staff to carry the width gauge body, and effectively prevent the cable from being entangled, so that the staff can unfold the cable again and operate the width gauge body again to detect bridge cracks.

[0020] The utility model sets up a camera assembly, and the staff will point the measuring lens towards the cracks on the bridge, apply external force to the screw plug, and the ball moves on the bridge, so as to adjust the position of the camera on the bridge, thereby facilitating the detection of cracks at different positions on the bridge, and effectively reducing the friction between the camera assembly and the bridge, reducing the wear of the camera assembly during the bridge crack detection process, and helping to increase the service life of the camera assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0022] Figure 1 A three-dimensional diagram of a crack width gauge used for bridge inspection Figure 1 ;

[0023] Figure 2 A three-dimensional diagram of a crack width gauge used for bridge inspection Figure 2 ;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure at center A;

[0025] Figure 4 A three-dimensional diagram of a crack width gauge used for bridge inspection Figure 3 ;

[0026] Figure 5 A three-dimensional diagram of a crack width gauge used for bridge inspection Figure 4 ;

[0027] Figure 6 A schematic diagram of the structural decomposition of hidden components.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1-Width gauge body; 101-Protective frame, 101a-Transparent plate, 101b-Ear block, 101c-Bolt, 101d-Hinge, 102-Cable, 103-Display screen, 103a-Scale, 2-Reeling assembly, 201-Connecting plate, 202-Reeling rod, 202a-Connecting rod, 202b-Top rod, 203-Protruding rod, 203a-Limiting nut, 204-Handle, 204 a-anti-slip cover, 3-camera assembly, 301-camera, 301a-measuring lens, 302-screw plug, 303-connecting sleeve, 304-connecting seat, 304a-ball, 4-hidden component, 401-storage tube, 402-guide rail, 403-slide rail, 404-screw cover, 404a-rubber pad, 405-placement plate, 405a-screw, 405b-locking nut, 405c-slide rod. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely explained below in conjunction with the embodiments and the accompanying drawings. Example 1

[0031] See also Figure 1 、 Figure 2 and Figure 4 The utility model is a crack width gauge for bridge inspection, comprising a width gauge body 1. A winding assembly 2 is provided on the upper surface of the width gauge body 1. The winding assembly 2 comprises a connecting plate 201, a winding rod 202, a connecting rod 202a, a top rod 202b, a protruding rod 203, a limiting nut 203a, a handle 204 and an anti-slip cover 204a. The winding rod 202 is used to wind up the cable 102, which is convenient for workers to tie the shoelaces of the width gauge body 1.

[0032] Specifically, a display screen 103 is inlaid on the side wall of the width gauge body 1, and a scale 103a is provided on the side wall of the display screen 103. The lower surface of the protective frame 101 is hinged to the side wall of the width gauge body 1 through a hinge 101d, and a transparent plate 101a is inlaid inside the protective frame 101. An ear block 101b is fixed to the upper surface of the protective frame 101, and a bolt 101c is threadedly connected to the outer wall of the ear block 101b. The inner end of the bolt 101c is threadedly connected to the side wall of the width gauge body 1. The upper surface of the width gauge body 1 is connected to the cable 102, and the connecting plate 201 is connected to the width gauge. On the upper surface of the body 1, and the upper surface of the connecting plate 201 is connected to a connecting rod 202a, the winding rod 202 is connected to the upper end of the connecting rod 202a, and the upper end of the winding rod 202 is fixedly connected to a push rod 202b, and the handle 204 is arranged above the connecting plate 201, and the upper end of the push rod 202b is fixedly connected to a protruding rod 203, the upper end of the protruding rod 203 passes through the lower surface of the handle 204, and the peripheral side wall of the protruding rod 203 is threadedly connected to a limiting nut 203a, the limiting nut 203a is abutted against the upper surface of the handle 204, and the outer side wall of the handle 204 is sleeved with an anti-slip sleeve 204a;

[0033] Furthermore, the hinges 101d are arranged at equal intervals, the two connecting rods 202a are arranged symmetrically, and the winding rod 202 is V-shaped;

[0034] The operating process of this embodiment is as follows: the staff winds the cable 102 around the two winding rods 202 to reel in the cable 102; conversely, the staff unfolds the reeled cable 102; when the staff loosens the bolt 101c clockwise, a pulling force is applied to the bolt 101c, and the protective frame 101 moves in an arc with the hinge 101d as a fixed point, the protective frame 101 is opened, and the display screen 103 is inspected; conversely, the protective frame 101 is closed, and the staff observes the information data related to bridge crack detection on the display screen 103 through the transparent plate 101a; when the staff applies external force to the handle 204, the width gauge body 1 is lifted and the width gauge body 1 is carried. Example 2

[0035] See also Figure 1 、 Figure 2 and Figure 3 Based on the first embodiment, a camera assembly 3 is provided. The camera assembly 3 includes a camera 301, a measuring lens 301a, a screw plug 302, a connecting sleeve 303, a connecting seat 304, and a ball 304a. The arrangement of the ball 304a facilitates the staff to adjust the position of the camera 301 on the bridge, facilitates the manipulation of the camera 301 to detect cracks at different locations on the bridge, and reduces the wear between the camera assembly 3 and the bridge.

[0036] Specifically, the upper end of the camera 301 is connected to the end of the cable 102, and a screw plug 302 is connected to the upper end surface of the camera 301. The lower end surface of the camera 301 is inlaid with a measuring lens 301a. The connecting sleeve 303 is sleeved on the peripheral side wall of the camera 301. The connecting seat 304 is threadedly connected to the lower surface of the connecting sleeve 303, and a ball 304a is provided on the lower surface of the connecting seat 304.

[0037] Furthermore, the connecting seat 304 is in a ring shape, and the balls 304a are arranged in a ring array;

[0038] The operation process of this embodiment is as follows: the staff aligns the measuring lens 301a with the crack on the bridge, applies external force to the screw plug 302, and the ball 304a moves on the bridge, so that the measuring lens 301a measures cracks at different positions on the bridge. Example 3

[0039] See also Figure 1 、 Figure 5 and Figure 6 On the basis of the first and second embodiments, a hidden assembly 4 is provided. The hidden assembly 4 includes a storage tube 401, a guide rail 402, a slide rail 403, a screw cover 404, a rubber pad 404a, a placement plate 405, a screw 405a, a locking nut 405b, and a slide rod 405c. The storage tube 401 is provided in conjunction with the screw cover 404 to hide and protect the camera 301, effectively reducing the amount of dust on the surface of the camera 301 when not in use, making it convenient to use the camera assembly 3 to detect cracks on the bridge again.

[0040] Specifically, the placement plate 405 is connected to the outer wall of the storage tube 401, the screw cover 404 is threadedly connected to the lower surface of the storage tube 401, and the upper surface of the screw cover 404 is provided with a rubber pad 404a, the upper surface of the placement plate 405 is fixedly connected to the screw rod 405a, the peripheral side wall of the screw rod 405a is threadedly connected to the locking nut 405b, the lower surface of the placement plate 405 is fixedly connected to the sliding rod 405c, the guide rail 402 and the slide rail 403 are sequentially connected to the other side wall of the width gauge body 1 from top to bottom, the upper end of the screw rod 405a passes through the lower surface of the guide rail 402, the locking nut 405b is abutted against the upper surface of the guide rail 402, and the slide rod 405c is slidably connected to the inside of the slide rail 403;

[0041] Furthermore, the guide rail 402 is U-shaped, and the slide rail 403 is U-shaped;

[0042] The operating process of this embodiment is as follows: after the staff reels the cable 102 onto the winding rod 202, they insert the camera 301 into the storage tube 401, and then rotate the screw plug 302. The screw plug 302 is threadedly connected to the inside of the storage tube 401, and the ball 304a contacts the rubber pad 404a, thereby realizing hidden protection of the camera component 3; conversely, the camera component 3 is moved out of the storage tube 401, and the camera component 3 is used to detect cracks on the bridge.

Claims

1. A crack width gauge for bridge inspection, comprising a crack width gauge body (1), characterized in that: A winding assembly (2) is provided on the upper surface of the width gauge body (1), and the winding assembly (2) includes a connecting plate (201) connected to the upper surface of the width gauge body (1), and the upper surface of the connecting plate (201) is symmetrically connected to a connecting rod (202a), and the upper end of the winding rod (202) is fixedly connected to a top rod (202b); The other end of the cable (102) connected to the upper surface of the width gauge body (1) is connected to a camera assembly (3), the camera assembly (3) comprises a screw plug (302) connected to the other end of the cable (102), a connecting sleeve (303) is sleeved on the peripheral side wall of a camera (301) connected to the lower surface of the screw plug (302), a ball (304a) is provided on the lower surface of a connecting seat (304) threadedly connected to the lower surface of the connecting sleeve (303), and a measuring lens (301a) is provided on the lower surface of the camera (301).

2. The crack width gauge for bridge inspection according to claim 1, characterized in that: A display screen (103) is provided on the side wall of the width gauge body (1), and a scale (103a) is provided on the side wall of the display screen (103).

3. The crack width gauge for bridge inspection according to claim 2, characterized in that: A transparent plate (101a) is embedded in the interior of a protective frame (101) provided on the outside of the display screen (103), and the lower surface of the protective frame (101) is hinged to the side wall of the width gauge body (1) via a hinge (101d).

4. The crack width gauge for bridge inspection according to claim 3, characterized in that: The ear block (101b) fixed to the upper surface of the protective frame (101) is away from the hinge (101d), and the bolt (101c) threadedly connected on the outer wall of the ear block (101b) is threadedly connected to the outer wall of the width gauge body (1).

5. The crack width gauge for bridge inspection according to claim 1, characterized in that: A limiting nut (203a) is threadedly connected to the peripheral side wall of the protruding rod (203) to which the upper end of the push rod (202b) is fixed, and an anti-slip sleeve (204a) is sleeved on the outer side wall of the handle (204) provided above the connecting plate (201), the upper end of the push rod (202b) passes through the lower surface of the handle (204), and the limiting nut (203a) is abutted against the upper surface of the handle (204).

6. The crack width gauge for bridge inspection according to claim 1, characterized in that: A hidden component (4) is provided on the other side wall of the width gauge body (1), and the hidden component (4) includes a placement plate (405) provided on the other side wall of the width gauge body (1). The position of the placement plate (405) corresponds to the position of the display screen (103), and a storage cylinder (401) is fixedly connected to the outer side wall of the placement plate (405).

7. The crack width gauge for bridge inspection according to claim 6, characterized in that: A guide rail (402) and a slide rail (403) are connected to the other side wall of the width gauge body (1); the upper end of the screw rod (405a) fixed to the upper surface of the placement plate (405) passes through the lower surface of the guide rail (402); a locking nut (405b) threadedly connected to the peripheral side wall of the screw rod (405a) is abutted against the upper surface of the guide rail (402); and the slide rod (405c) fixed to the lower surface of the placement plate (405) is slidably connected to the inside of the slide rail (403).

8. The crack width gauge for bridge inspection according to claim 6, characterized in that: The lower surface of the storage cylinder (401) is threadedly connected to a screw cover (404), and the upper surface of the screw cover (404) is provided with a rubber pad (404a).

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