CN117738076A - Crack detection device for municipal road and bridge - Google Patents

Crack detection device for municipal road and bridge Download PDF

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Publication number
CN117738076A
CN117738076A CN202410175041.8A CN202410175041A CN117738076A CN 117738076 A CN117738076 A CN 117738076A CN 202410175041 A CN202410175041 A CN 202410175041A CN 117738076 A CN117738076 A CN 117738076A
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China
Prior art keywords
fixedly connected
remote control
detection device
crack detection
display
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CN202410175041.8A
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Chinese (zh)
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CN117738076B (en
Inventor
张欣
***
杨绍华
傅荣
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Shandong Fangzheng Highway Engineering Supervision Consulting Co ltd
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Shandong Fangzheng Highway Engineering Supervision Consulting Co ltd
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Priority to CN202410175041.8A priority Critical patent/CN117738076B/en
Publication of CN117738076A publication Critical patent/CN117738076A/en
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Abstract

The invention relates to the technical field of crack detection, in particular to a crack detection device for municipal road and bridge, which comprises a remote control trolley, a display and a detector main body, wherein the upper end of the remote control trolley is provided with a fixing component for fixing the display and an adjusting component for adjusting the position of the display, the front end of the remote control trolley is provided with a protection component for protecting the detector main body, the protection component comprises a protection plate fixedly connected with the remote control trolley, the front end of the protection plate is rotationally connected with a connecting plate, the detector main body is arranged at the lower end of the connecting plate, the lower end of the protection plate is provided with a hidden groove, and the hidden groove is matched with the detector main body, and the crack detection device has the advantages that: the bridge crack detection device has the advantages that bridge crack detection can be facilitated, the crack detector can be lifted conveniently, the crack detector is protected, and the crack detector can be retracted conveniently.

Description

Crack detection device for municipal road and bridge
Technical Field
The invention relates to the technical field of crack detection, in particular to a crack detection device for municipal roads and bridges.
Background
Bridge cracks are key factors affecting the service performance of the bridge, and crack detection is important for bridge maintenance. At present, most of detection is manual detection, detection personnel check cracks through visual, manual record cracks, the time cost of detection is high, a bridge crack detection system based on machine vision utilizes bridge surface images to carry out crack identification, precision and efficiency of automatic crack identification are greatly improved in recent years by means of artificial intelligence technology, an existing crack detector needs to be taken with a detector and a handheld display to detect, the operation is troublesome and labor-consuming, long-distance bridges are detected, and the bridge detector is troublesome to carry and needs to be placed in a suitcase to be folded and unfolded, so that the crack detection device for municipal road bridges is provided.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the operation is more troublesome during the detection, and is more laborious in the long distance detection process, and detecting instrument carries inconvenient.
The invention adopts the following technical scheme to solve the technical problems: the utility model provides a crack detection device for municipal road and bridge, including remote control dolly, display, detector main part, the upper end of remote control dolly is provided with the fixed subassembly that is used for fixed display and the adjustment subassembly that is used for adjusting the display position, the front end of remote control dolly is provided with the protection subassembly that is used for protecting the detector main part, the protection subassembly includes the protection shield with remote control dolly fixed connection, the front end of protection shield rotates and is connected with the connecting plate, the lower extreme at the connecting plate is installed to the detector main part, hidden groove has been seted up to the lower extreme of protection shield, hidden groove agrees with the detector main part.
Preferably, the both sides of protection shield are provided with the connecting piece, the connecting piece includes the head rod, one side of head rod rotates and is connected with the second connecting rod, the front end fixedly connected with second circle shell of head rod, the rear end fixedly connected with first circle shell of second connecting rod, the inboard fixedly connected with fixed axle of second circle shell, the fixed axle rotates with first circle shell to be connected, the outside of fixed axle is provided with the second shell fragment.
Preferably, the upper end fixedly connected with first connecting block of connecting plate, the rear end fixedly connected with stay cord of first connecting block, the upper end fixedly connected with second connecting block of stay cord, second connecting block and display fixed connection, the upper end fixedly connected with first splint, second splint of protection shield, the inboard rotation of first splint is connected with first runner, the inboard rotation of second splint is connected with the second runner, the stay cord passes from the upper end of the lower extreme second splint of first runner.
Preferably, the fixed subassembly includes the upper table of fixed connection in the remote control dolly upper end, the mouth of turning round has all been seted up to front end, rear end and both sides face central part of upper table, the inboard rotation of turning round is connected with the clamp lever, is close to the upper end fixedly connected with card lid of turning round of upper table front and back both ends, be close to the upper end fixedly connected with flitch of clamp lever of upper table both sides.
Preferably, the upper table is communicated with the remote control trolley, an electric push rod is fixedly connected to the inner side of the remote control trolley, a top cover is fixedly connected to the upper end of the electric push rod, a spring is fixedly connected to the lower end of the top cover, the lower end of the spring is fixedly connected with the inner wall of the remote control trolley, and the electric push rod is located on the inner side of the spring.
Preferably, the top cover is T-shaped, the outside fixedly connected with first U template of top cover, the inboard rotation of first U template is connected with the ejector pin, the clamp lever is L shape, the one end fixedly connected with connector of clamp lever, connector and ejector pin fixed connection.
Preferably, the adjustment subassembly includes four groups of second U template of fixed connection in the remote control dolly upper end, the inboard of second U template is connected with the lower beam through damping pivot rotation, the upper end of lower beam is connected with the upper boom through damping pivot rotation, four groups the upper boom all rotates with the display to be connected, the upper boom agrees with mutually with the lower boom, two groups of the same side the common fixedly connected with protective sheet of upper boom, the upper end fixedly connected with of protective sheet two sets of curb plates, the draw-in groove has been seted up to one side of curb plate, the draw-in groove agrees with mutually with the clamping lid.
Preferably, one side of the lower rod is provided with an auxiliary assembly, the auxiliary assembly comprises a first auxiliary rod rotationally connected with the upper rod, the rear end of the first auxiliary rod is fixedly connected with a connecting shaft, the outer side of the connecting shaft is rotationally connected with a protection cylinder, the outer side of the protection cylinder is fixedly connected with a second auxiliary rod, the second auxiliary rod is rotationally connected with the lower rod, the outer side of an inner connecting shaft of the protection cylinder is provided with a first spring, one side of the first spring is fixedly connected with the connecting shaft, and the other side of the first spring is fixedly connected with the protection cylinder.
Preferably, the upper end of the second U-shaped plate is fixedly connected with barrier strips, and four groups of barrier strips are mutually symmetrical.
Compared with the prior art, the invention provides a crack detection device for municipal roads and bridges, which has the following beneficial effects:
1. this crack detection device for municipal road and bridge can support the display through lower beam, upper beam, push down the display and make the upper beam outwards rotate, make the lower beam outwards rotate in the inboard of second U template simultaneously, make the display move down, continue to push down the display, lower beam, upper beam can inwards rotate, the upper beam can block down on the pole simultaneously, the rotation of upper beam can be followed to the guard plate simultaneously, the lid can laminate each other at the upper end of display, two sets of curb plates that are relative simultaneously, make the draw-in groove switch on, can drive first auxiliary rod and the inwards rotation of second auxiliary rod through the connecting axle through first strip, guarantee lower beam and upper beam outwards rotate, can prevent down beam inwards rotate through the blend stop.
2. This crack detection device for municipal road and bridge, the display can push down the inboard removal of top cap to the platform, and first U template can drive the ejector pin simultaneously and move down, makes the ejector pin drive the connector and makes the clamp lever rotate at the mouth inboard of turning round, makes the inboard that the draw-in groove was blocked to the card lid, blocks two sets of curb plates, makes the curb plate fixed assurance display not receive the injury, and the flitch can paste in the both sides of display, protects the display, and the flitch can open in the testing process, guarantees the stability when the remote control dolly march.
3. This crack detection device for municipal road and bridge, the display moves down in-process stay cord and moves down, the second shell fragment can drive first circle shell and the mutual rotation of second circle shell this moment, make head rod and second connecting rod paste tightly each other, thereby make the connecting plate lid to the lower extreme of protection shield, make the detector main part card go into the inboard in hiding the groove, can push down the stay cord through first runner and second runner, prevent that the stay cord from bouncing, the display moves up in-process second connecting block can stimulate the stay cord and make the connecting plate open, make things convenient for the detector main part to detect the crack, can make the connecting plate follow two openings and closings of going up and down of display through the stay cord, the use of convenient detector main part, and can protect the detector main part.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a fixing assembly according to the present invention;
FIG. 3 is a cross-sectional view of a securing assembly according to the present invention;
FIG. 4 is an enlarged schematic view of the portion A of FIG. 3 according to the present invention;
FIG. 5 is a schematic view of the structure of the adjusting assembly of the present invention;
FIG. 6 is a schematic diagram of an explosion structure of an auxiliary assembly according to the present invention;
FIG. 7 is a cross-sectional view of an accessory assembly of the present invention;
FIG. 8 is a schematic view of a protective component structure according to the present invention;
FIG. 9 is a cross-sectional view of a protective assembly of the present invention;
fig. 10 is a cross-sectional view of a connector of the present invention.
In the figure: 1. a remote control trolley; 2. a display; 3. a probe body; 4. a fixing assembly; 41. a step of upper stage; 42. a turning port; 43. a clamping rod; 44. pasting a board; 45. a clamping cover; 46. an electric push rod; 47. a spring; 48. a top cover; 49. a first U-shaped plate; 410. a push rod; 411. a connector; 5. an adjustment assembly; 51. a second U-shaped plate; 52. a lower rod; 53. a pole is arranged; 54. a protective sheet; 55. a side plate; 56. a clamping groove; 57. a barrier strip; 58. an auxiliary component; 581. a first auxiliary lever; 582. a second auxiliary lever; 583. a protective cylinder; 584. a connecting shaft; 585. a first spring; 6. a protection component; 61. a protective plate; 62. a connecting plate; 63. hiding the groove; 64. a connecting piece; 641. a first connecting rod; 642. a second connecting rod; 643. a first round shell; 644. a second round shell; 645. a fixed shaft; 646. a second spring plate; 65. a first connection block; 66. a pull rope; 67. a second connection block; 68. a first clamping plate; 69. a first wheel; 610. a second clamping plate; 611. a second wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-10, a crack detection device for a municipal road and bridge comprises a remote control trolley 1, a display 2 and a detector main body 3, wherein a fixing component 4 for fixing the display 2 and an adjusting component 5 for adjusting the position of the display 2 are arranged at the upper end of the remote control trolley 1, a protection component 6 for protecting the detector main body 3 is arranged at the front end of the remote control trolley 1, the protection component 6 comprises a protection plate 61 fixedly connected with the remote control trolley 1, a connecting plate 62 is rotatably connected with the front end of the protection plate 61, the detector main body 3 is arranged at the lower end of the connecting plate 62, a hidden groove 63 is formed at the lower end of the protection plate 61, and the hidden groove 63 is matched with the detector main body 3.
In this embodiment, the two sides of the protection plate 61 are provided with the connecting pieces 64, the connecting pieces 64 include a first connecting rod 641, one side of the first connecting rod 641 is rotatably connected with a second connecting rod 642, the front end of the first connecting rod 641 is fixedly connected with a second round shell 644, the rear end of the second connecting rod 642 is fixedly connected with a first round shell 643, the inner side of the second round shell 644 is fixedly connected with a fixed shaft 645, the fixed shaft 645 is rotatably connected with the first round shell 643, and a second elastic sheet 646 is arranged on the outer side of the fixed shaft 645.
Specifically, the second elastic sheet 646 drives the first circular casing 643 and the second circular casing 644 to rotate, so that the first connecting rod 641 and the second connecting rod 642 are tightly attached to each other, and the connecting plate 62 covers the lower end of the protection plate 61, so that the detector main body 3 is clamped into the inner side of the hiding groove 63.
In this embodiment, the upper end of the connecting plate 62 is fixedly connected with the first connecting block 65, the rear end of the first connecting block 65 is fixedly connected with the pull rope 66, the upper end of the pull rope 66 is fixedly connected with the second connecting block 67, the second connecting block 67 is fixedly connected with the display 2, the upper end of the protecting plate 61 is fixedly connected with the first clamping plate 68 and the second clamping plate 610, the inner side of the first clamping plate 68 is rotatably connected with the first rotating wheel 69, the inner side of the second clamping plate 610 is rotatably connected with the second rotating wheel 611, and the pull rope 66 penetrates through the upper end of the second clamping plate 610 at the lower end of the first rotating wheel 69.
Specifically, the pull rope 66 can be pressed through the first rotating wheel 69 and the second rotating wheel 611, the pull rope 66 is prevented from bouncing, the second connecting block 67 can pull the pull rope 66 to open the connecting plate 62 in the upward moving process of the display 2, the detector main body 3 is convenient to detect cracks, the connecting plate 62 can be opened and closed along with the lifting of the display 2 through the pull rope 66, the detector main body 3 is convenient to use, and the detector main body 3 can be protected.
In this embodiment, the fixing assembly 4 includes an upper table 41 fixedly connected to the upper end of the remote control cart 1, the front end, the rear end and the central parts of two side surfaces of the upper table 41 are respectively provided with a rotating opening 42, the inner side of the rotating opening 42 is rotatably connected with a clamping rod 43, the upper ends of the rotating openings 42 near the front end and the rear end of the upper table 41 are fixedly connected with clamping covers 45, and the upper ends of the clamping rods 43 near the two sides of the upper table 41 are fixedly connected with a flitch 44.
Specifically, the clamping cover 45 is clamped to the inner side of the clamping groove 56, the two groups of side plates 55 are clamped, the side plates 55 are fixed, the display 2 is prevented from being damaged, the sticking plates 44 are attached to two sides of the display 2, the display 2 is protected, the sticking plates 44 are opened in the detection process, and the stability of the remote control trolley 1 in the advancing process is guaranteed.
In this embodiment, the upper table 41 is communicated with the remote control trolley 1, the inner side of the remote control trolley 1 is fixedly connected with an electric push rod 46, the upper end of the electric push rod 46 is fixedly connected with a top cover 48, the lower end of the top cover 48 is fixedly connected with a spring 47, the lower end of the spring 47 is fixedly connected with the inner wall of the remote control trolley 1, and the electric push rod 46 is positioned at the inner side of the spring 47.
The top cap 48 is the T font, and the outside fixedly connected with first U template 49 of top cap 48, the inboard rotation of first U template 49 is connected with ejector pin 410, and clamp lever 43 is L shape, and the one end fixedly connected with connector 411 of clamp lever 43, connector 411 and ejector pin 410 fixed connection.
Specifically, the display 2 pushes down the top cover 48 to move toward the inner side of the upper table 41, and the first U-shaped plate 49 drives the ejector rod 410 to move downward, so that the ejector rod 410 drives the connector 411 to rotate the clamping rod 43 toward the inner side of the rotating opening 42, and the display 2 is fixed.
In this embodiment, the adjusting assembly 5 includes four groups of second U-shaped boards 51 fixedly connected to the upper end of the remote control trolley 1, the inner side of the second U-shaped boards 51 is rotatably connected with a lower rod 52 through a damping rotating shaft, the upper end of the lower rod 52 is rotatably connected with an upper rod 53 through a damping rotating shaft, the four groups of upper rods 53 are rotatably connected with the display 2, the upper rod 53 is engaged with the lower rod 52, two groups of upper rods 53 on the same side are fixedly connected with a protective sheet 54 together, the upper end of the protective sheet 54 is fixedly connected with two groups of side plates 55, a clamping groove 56 is formed in one side of the side plates 55, and the clamping groove 56 is engaged with the clamping cover 45.
Specifically, the lower rod 52 and the upper rod 53 can support the display 2, so that the stability of the display 2 is ensured, the display 2 is convenient to retract and release, the upper rod 53 can be clamped on the lower rod 52, and the retraction and release of the upper rod 53 are convenient.
In this embodiment, an auxiliary assembly 58 is disposed on one side of the lower rod 52, the auxiliary assembly 58 includes a first auxiliary rod 581 rotationally connected to the upper rod 53, a connecting shaft 584 is fixedly connected to a rear end of the first auxiliary rod 581, a protection cylinder 583 is rotationally connected to an outer side of the connecting shaft 584, a second auxiliary rod 582 is fixedly connected to an outer side of the protection cylinder 583, the second auxiliary rod 582 is rotationally connected to the lower rod 52, a first emitter bar 585 is disposed on an outer side of an inner side connecting shaft 584 of the protection cylinder 583, one side of the first emitter bar 585 is fixedly connected to the connecting shaft 584, and the other side of the first emitter bar 585 is fixedly connected to the protection cylinder 583.
Specifically, the first auxiliary lever 581 and the second auxiliary lever 582 are driven to rotate inward by the first spring 585 through the connecting shaft 584, so that the lower lever 52 and the upper lever 53 are ensured to rotate outward.
In this embodiment, the upper end of the second U-shaped plate 51 is fixedly connected with the barrier strips 57, and the four groups of barrier strips 57 are symmetrical to each other.
Specifically, the lower rod 52 is prevented from rotating inward by the stopper 57.
When in use, the remote control trolley 1 can drive the display 2 and the detector main body 3 to move, the detector main body 3 is convenient to detect cracks, the display 2 can be supported by the lower rod 52 and the upper rod 53, the display 2 is pressed down to enable the upper rod 53 to rotate outwards, the lower rod 52 is simultaneously enabled to rotate outwards at the inner side of the second U-shaped plate 51, the display 2 is enabled to move downwards, the display 2 is continuously pressed down, the lower rod 52 and the upper rod 53 can rotate inwards, the upper rod 53 can be clamped onto the lower rod 52, the protective sheet 54 can follow the rotation of the upper rod 53, the upper end of the display 2 is covered by the protective sheet, two opposite groups of side plates 55 can be mutually attached, the clamping groove 56 is communicated, the first auxiliary rod 581 and the second auxiliary rod 582 can be driven to rotate inwards by the first transmitting strip 585 through the connecting shaft 584, the lower rod 52 and the upper rod 53 can be ensured to rotate outwards, the lower rod 52 can be prevented from rotating inwards by the blocking strip 57, the display 2 will push down the top cover 48 to move towards the inner side of the upper table 41, meanwhile, the first U-shaped plate 49 will drive the push rod 410 to move downwards, so that the push rod 410 will drive the connector 411 to rotate the clamping rod 43 towards the inner side of the rotating opening 42, the clamping cover 45 will be clamped to the inner side of the clamping groove 56, meanwhile, the attaching plates 44 will be attached to two sides of the display 2 to protect the display 2, the pull rope 66 will move downwards during the downward movement of the display 2, at this time, the second elastic sheet 646 will drive the first circular case 643 and the second circular case 644 to rotate mutually, so that the first connecting rod 641 and the second connecting rod 642 will be tightly attached to each other, so that the connecting plate 62 covers the lower end of the protecting plate 61, the detector main body 3 will be clamped into the inner side of the hiding groove 63, the pull rope 66 will be pressed by the first rotating wheel 69 and the second rotating wheel 611, the pull rope 66 will be prevented from bouncing up, the second connecting rod 67 will pull the pull rope 66 will open during the upward movement of the display 2, the crack is detected by the detector body 3.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a crack detection device for municipal road and bridge, includes remote control dolly (1), display (2), surveys appearance main part (3), its characterized in that, the upper end of remote control dolly (1) is provided with fixed subassembly (4) that are used for fixed display (2) and adjustment subassembly (5) that are used for adjusting display (2) position, the front end of remote control dolly (1) is provided with protection subassembly (6) that are used for protecting surveys appearance main part (3), protection subassembly (6) include protection shield (61) with remote control dolly (1) fixed connection, the front end rotation of protection shield (61) is connected with connecting plate (62), the lower extreme at connecting plate (62) is installed to detection appearance main part (3), hidden groove (63) have been seted up to the lower extreme of protection shield (61), hidden groove (63) agree with detection appearance main part (3).
2. The crack detection device for a municipal road bridge according to claim 1, wherein: the both sides of protection shield (61) are provided with connecting piece (64), connecting piece (64) include head rod (641), one side rotation of head rod (641) is connected with second connecting rod (642), the front end fixedly connected with second circle shell (644) of head rod (641), the rear end fixedly connected with first circle shell (643) of second connecting rod (642), the inboard fixedly connected with fixed axle (645) of second circle shell (644), fixed axle (645) rotate with first circle shell (643) to be connected, the outside of fixed axle (645) is provided with second shell fragment (646).
3. The crack detection device for a municipal road bridge according to claim 2, wherein: the utility model discloses a motor vehicle, including connecting plate (62), first connecting block (65) of upper end fixedly connected with of connecting plate (62), the rear end fixedly connected with stay cord (66) of first connecting block (65), the upper end fixedly connected with second connecting block (67) of stay cord (66), second connecting block (67) and display (2) fixed connection, the upper end fixedly connected with first splint (68), second splint (610) of protection shield (61), the inboard rotation of first splint (68) is connected with first runner (69), the inboard rotation of second splint (610) is connected with second runner (611), the upper end of lower extreme second splint (610) of stay cord (66) follow first runner (69) passes.
4. The crack detection device for a municipal road bridge according to claim 1, wherein: the fixed subassembly (4) is including fixed connection at upper table (41) of remote control dolly (1) upper end, turn round mouth (42) have all been seted up to front end, rear end and both sides face central part of upper table (41), the inboard of turning round mouth (42) rotates and is connected with clamp lever (43), is close to upper table (41) front and back both ends turn round mouth (42) upper end fixedly connected with clamping cover (45), be close to upper table (41) both sides clamp lever (43)'s upper end fixedly connected with flitch (44).
5. The crack detection device for municipal road and bridge according to claim 4, wherein: the upper table (41) is communicated with the remote control trolley (1), an electric push rod (46) is fixedly connected to the inner side of the remote control trolley (1), a top cover (48) is fixedly connected to the upper end of the electric push rod (46), a spring (47) is fixedly connected to the lower end of the top cover (48), the lower end of the spring (47) is fixedly connected with the inner wall of the remote control trolley (1), and the electric push rod (46) is located the inner side of the spring (47).
6. The crack detection device for municipal road and bridge according to claim 5, wherein: the top cover (48) is T-shaped, the outside fixedly connected with first U template (49) of top cover (48), the inboard rotation of first U template (49) is connected with ejector pin (410), clamp lever (43) are L shape, the one end fixedly connected with connector (411) of clamp lever (43), connector (411) and ejector pin (410) fixed connection.
7. The crack detection device for municipal road and bridge according to claim 4, wherein: the adjusting component (5) comprises four groups of second U-shaped plates (51) fixedly connected to the upper end of the remote control trolley (1), lower rods (52) are rotatably connected to the inner sides of the second U-shaped plates (51) through damping rotating shafts, upper rods (53) are rotatably connected to the upper ends of the lower rods (52) through damping rotating shafts, the four groups of upper rods (53) are rotatably connected with the display (2), the upper rods (53) are matched with the lower rods (52), protection plates (54) are fixedly connected to the upper rods (53) on the same side, two groups of side plates (55) are fixedly connected to the upper ends of the protection plates (54), clamping grooves (56) are formed in one sides of the side plates (55), and the clamping grooves (56) are matched with the clamping covers (45).
8. The crack detection device for municipal road and bridge according to claim 7, wherein: one side of lower pole (52) is provided with auxiliary assembly (58), auxiliary assembly (58) include with go up pole (53) rotate first auxiliary lever (581) of being connected, the rear end fixedly connected with connecting axle (584) of first auxiliary lever (581), the outside of connecting axle (584) rotates and is connected with protection section of thick bamboo (583), the outside fixedly connected with second auxiliary lever (582) of protection section of thick bamboo (583), second auxiliary lever (582) rotates with lower pole (52) to be connected, the outside of the inboard connecting axle (584) of protection section of thick bamboo (583) is provided with first clockwork spring (585), one side and connecting axle (584) fixed connection of first clockwork spring (585), the opposite side and the protection section of thick bamboo (583) of first clockwork spring (585) fixed connection.
9. The crack detection device for municipal road and bridge according to claim 8, wherein: the upper end of the second U-shaped plate (51) is fixedly connected with barrier strips (57), and four groups of barrier strips (57) are mutually symmetrical.
CN202410175041.8A 2024-02-07 2024-02-07 Crack detection device for municipal road and bridge Active CN117738076B (en)

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CN202410175041.8A CN117738076B (en) 2024-02-07 2024-02-07 Crack detection device for municipal road and bridge

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Application Number Priority Date Filing Date Title
CN202410175041.8A CN117738076B (en) 2024-02-07 2024-02-07 Crack detection device for municipal road and bridge

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CN117738076A true CN117738076A (en) 2024-03-22
CN117738076B CN117738076B (en) 2024-04-19

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