CN219319349U - Crack depth detector - Google Patents

Crack depth detector Download PDF

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Publication number
CN219319349U
CN219319349U CN202320350641.4U CN202320350641U CN219319349U CN 219319349 U CN219319349 U CN 219319349U CN 202320350641 U CN202320350641 U CN 202320350641U CN 219319349 U CN219319349 U CN 219319349U
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China
Prior art keywords
rack
box body
crack depth
depth detector
wall
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CN202320350641.4U
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Chinese (zh)
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李凯
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Jingxing International Engineering Management Co ltd
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Jingxing International Engineering Management Co ltd
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Priority to CN202320350641.4U priority Critical patent/CN219319349U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Abstract

The application discloses crack depth detector relates to the technical field of building engineering detection, and comprises a host, a connecting wire and two energy converters, wherein the connecting wire is used for connecting the energy converters to the host, and the crack depth detector also comprises a box body and a plurality of supporting rods, and the supporting rods are detachably connected with the box body; the energy converter can be dismantled and set up in the box body, and be provided with in the box body and be used for supporting tight subassembly with energy converter and the wall that waits to detect, still be provided with the removal subassembly that is used for the distance to remove the energy converter position in the box body. This application has the effect of the crack depth of the higher department of operating personnel detection of being convenient for.

Description

Crack depth detector
Technical Field
The application relates to the technical field of building engineering detection, in particular to a crack depth detector.
Background
The crack depth detector applies the principle of acoustic diffraction, is intelligent nondestructive testing equipment integrating testing, storage and transmission, and is an intelligent instrument for testing the crack depth of the concrete surface. The crack depth detector comprises a host, a transducer and a connecting wire for connecting the host and the transducer.
The crack depth detector in the prior art comprises a host, a connecting wire and two transducers, wherein the two transducers are respectively connected with the host through the connecting wire. When the crack depth detector is used for detecting the crack depth, guiding rules are used on two sides of the crack before detection, marking pens are used at positions 50mm, 100mm and 150mm away from the two sides of the crack respectively, and the crack depth detection is opened after marking is completed. An operator hangs the host computer on the neck, and another operator holds two transducers, and two transducers are respectively leaned against 50mm, 100mm and 150mm positions apart from two sides of the crack simultaneously to be detected, so that three groups of test data are obtained, and the depth of the crack is obtained through data processing of the host computer.
When carrying out crack depth measurement to the higher position that some operating personnel can't reach, only can detect after need operating personnel climbs the support body. Setting up the box body is time-consuming and labor-consuming, and an operator measures the risk of falling on the box body.
Disclosure of Invention
In order to facilitate detection of higher crack depths, the present application provides a crack depth detector.
The application provides a crack depth detector, adopts following technical scheme:
the crack depth detector comprises a host, a connecting wire, two energy converters, a box body, a plurality of supporting rods and a plurality of sensors, wherein the connecting wire is used for connecting the energy converters with the host;
the energy converter can be dismantled and set up in the box body and can remove in the box body, be provided with in the box body and be used for driving the energy converter to remove to with waiting to detect the tight subassembly of support of wall tight, still be provided with in the box body and be used for the distance to remove the moving assembly of energy converter, moving assembly is perpendicular with the direction that supports tight subassembly drive energy converter removal.
By adopting the technical scheme, the depth of the two sides of the crack is required to be detected as the crack depth is detected by the crack depth detector, multiple groups of data are required to be detected at different distances of the crack, and then the depth of the crack is calculated according to a related formula. When detecting the crack depth of a wall body which an operator can not touch when standing on the ground, firstly, installing a transducer in a box body, installing a supporting rod on the box body, enabling the transducer to be in contact with the wall body on two sides of the crack by lifting the supporting rod, and enabling the transducer to be propped against the wall body to be detected by a propping component so as to realize the detection of the crack depth; after one set of data is detected, the position of the transducer is changed by moving the assembly so that the transducer can detect the next set of data.
The optional moving assembly comprises a gear column and a driving source for driving the gear column to rotate, and the gear column is rotationally connected to the box body;
the gear column is meshed with a first rack and a second rack which are parallel, the first rack and the second rack are both in sliding connection with the box body, and the two transducers are different in length and are respectively arranged on the first rack and the second rack.
Through adopting above-mentioned technical scheme, install two transducers respectively on first rack and the second rack, when carrying out transducer position and remove, start the actuating source and make the gear post rotate corresponding angle, meshing first rack and second rack on the gear post and remove in opposite directions or mutually in this moment to realize the position movement of the transducer that sets up on first rack and second rack.
Optionally, a fixing component is fixed on the surface of each of the first rack and the second rack, and the fixing component is detachably connected with the transducer.
Through adopting above-mentioned technical scheme, when using this detector, realize through fixed subassembly that transducer and first rack and second are connected firmly between the rack.
Optionally, the fixed subassembly includes two fixed blocks of parallel interval setting, all offered the arc wall on the relative lateral wall of fixed block, be provided with the screw thread in the arc wall, the transducer simultaneously with two fixed block threaded connection.
Through adopting above-mentioned technical scheme, when installing the transducer, rotate the transducer to the arc wall of two fixed blocks in, through transducer and two fixed block threaded connection, realize the firm connection of transducer and fixed block, and the transducer can be followed the fixed block and pulled down.
Optionally, a dovetail groove is formed in the bottom wall of the box body, dovetail blocks are fixed on the first rack and the second rack, and the dovetail blocks slide in the dovetail groove.
Through adopting above-mentioned technical scheme for the box body can play the supporting role to first rack and second rack, and the dovetail on the box body slides in the dovetail on the box body, makes first rack and second rack remove along the setting route of dovetail, is difficult for the off normal work of movable assembly in order to guarantee.
Optionally, the surface of first rack with the slide has all been seted up to the surface of second rack, and the both ends of slide are sealed, just be fixed with the slider on the fixed block, the slider slides in the slide.
Through adopting above-mentioned technical scheme, when supporting tight subassembly drive transducer and waiting to detect the wall and support tightly, can remove through the drive fixed block and drive the transducer and remove to realize that the transducer supports tightly or the effect of keeping away from with waiting to detect the wall, set up the slider in the fixed block bottom, and set up the slide on first rack and second rack surface, make the fixed block can slide along the slide route, thereby realize driving the effect that the transducer removed.
Optionally, support tight subassembly and include the slider, the slider with be provided with the spring between the fixed block, be provided with the promotion subassembly that is used for driving the slider and removes along the spring axis on the box body.
By adopting the technical scheme, when the driving source drives the gear column to rotate and drives the first rack and the second rack to move oppositely or reversely, the abutting component moves along with the first rack and the second rack, the pushing component drives the sliding block to move along the axis of the spring, and when the sliding block moves towards the direction close to the fixed block, the fixed block is pushed to move towards the direction close to the wall, and then the transducer fixed on the fixed block is driven to abut against the direction close to the wall, so that the detection of the crack depth of the wall is realized; after the first group of cracks are detected in depth, the sliding block moves in a direction away from the wall body under the action of elastic restoring force of the spring, and the transducer is driven to be away from the wall body.
Optionally, the promotion subassembly is including fixed first lug group and the second lug group that sets up on the box body lateral wall, first lug group includes the first lug that a plurality of equidistant intervals set up, the second lug group includes the second lug that a plurality of equidistant intervals set up, the one end that first lug is close to first rack is provided with the tapering terrace with edges, and the one end that the second lug is close to the second rack also is provided with the tapering terrace with edges, the terrace with edges lateral wall can be used for promoting the sliding block and remove when the sliding block removes.
By adopting the technical scheme, when the first rack and the second rack drive the sliding block to move, and the side wall of the sliding block is propped against the side wall of the box body, the sliding block does not push the fixed block towards the wall body, and the transducer is not contacted with the wall body at the moment; when the side wall of the sliding block moves to be propped against the surface of the first bump or the second bump, the spring is compressed, and at the moment, the fixed block drives the energy transducer to move towards the side wall of the wall body, so that the energy transducer is propped against the wall body, and the detection of the crack depth of the wall body can be realized; the first convex block and the second convex block are provided with tapered prismatic tables, and the inclined surfaces of the prismatic tables can play a role in guiding the sliding of the sliding block, so that the sliding block can smoothly move along the first convex block group or the second convex block group; through equidistant first lug and the second lug that set up, can realize that the transducer offsets with the wall body after removing the same settlement distance for operating personnel can more convenient collection multiunit crack depth's detection data.
Optionally, the box body is close to the lateral wall opening of wall body, just offer the first perforation that supplies first rack and second rack to pass on the box body lateral wall to and supply the second perforation that the connecting wire passed.
By adopting the technical scheme, the box body is close to the side wall opening of the wall body, so that the transducer can better extend out of the box body to contact with the wall body; in the sliding process of the first rack and the second rack along the dovetail groove, the first through hole can be extended, so that the box body is smaller in size and more convenient to carry; the second perforation is arranged so that the connecting wire can pass out of the box body and be connected with the host.
Optionally, the box body is made of transparent plastic, and scale marks are arranged on the side wall of the box body far away from the wall surface.
Through adopting above-mentioned technical scheme, because the crack height is higher for the people's hand is inconvenient to control, aligns the position location that can realize the box body with scale mark and crack, utilizes transparent plastics preparation box body, and the operating personnel of being convenient for observes the condition in the box body on the one hand, and it is lighter to utilize plastics to make the box body in addition, and the operating personnel of being convenient for lifts.
In summary, the present application includes at least one of the following beneficial effects:
1. through setting up box body and bracing piece to can dismantle the setting in the box body with the transducer, can realize carrying out crack depth detection to the crack that operating personnel stands on ground and can't reach the department of height, reduce the danger that the climbing support body brought;
2. the box body is internally provided with the propping assembly and the moving assembly, so that three groups of data can be detected in a semi-automatic manner, and in the detection process, an operator only needs to lift the supporting frame to tightly cling the box body to a wall body and can realize detection of the three groups of data by controlling the driving source to rotate;
3. the box body is transparent, the scale marks and the central alignment lines are arranged on the box body, and when the box body is positioned, the detection can be started only by aligning the central alignment lines of the box body with the cracks, and the situation in the box body can be observed in the detection process through the transparent box body and the scale marks.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a crack depth detector according to an embodiment of the present application;
FIG. 2 is a schematic view of a partial structure of the interior of the case according to the embodiment of the present application;
fig. 3 is a schematic view of a partial explosion of the internal structure of the case according to the embodiment of the present application.
Reference numerals illustrate: 1. a host; 2. a connecting wire; 3. a transducer; 31. a threaded section; 4. a case body; 41. a dovetail groove; 42. a first perforation; 43. a second perforation; 44. scale marks; 441. a center alignment line; 5. a support rod; 6. a tightening assembly; 61. a sliding block; 611. a guide rod; 62. a spring; 63. a pushing assembly; 631. a first bump; 632. a second bump; 7. a moving assembly; 71. a gear post; 72. a driving source; 73. a first rack; 731. dovetail blocks; 732. a slideway; 74. a second rack; 741. a guide hole; 75. a fixed block; 751. an arc-shaped groove; 752. a slide block; 76. and (5) connecting a block.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a crack depth detector, referring to fig. 1 and 2, a crack depth detector includes host computer 1, connecting wire 2 and two transducer 3 that length is different, and two transducer 3 are connected to 1 on the host computer through connecting wire 2. The crack depth detector also comprises a box body 4, wherein the box body 4 is in a cuboid shape, the box body 4 is made of transparent plastic, and one side wall of the box body 4 is opened. Four supporting rods 5 are connected to the box body 4 in a threaded mode, threaded holes are formed in four corners of the bottom wall of the box body 4, external threads are formed in the end portions of the supporting rods 5, and the supporting rods 5 are installed by rotating the supporting rods 5 into the threaded holes. The energy converter 3 can be dismantled and set up inside box body 4, fix energy converter 3 in box body 4, operating personnel lifts bracing piece 5 for energy converter 3 can touch the wall body of higher department, thereby realizes that operating personnel does not climb the support body and also can detect the crack depth of higher department.
Referring to fig. 2, the inside of the case 4 is provided with a tightening assembly 6 and a moving assembly 7. The moving assembly 7 includes a gear column 71 disposed vertically and a driving source 72 for driving the gear column 71 to rotate forward and reverse, the driving source 72 being embodied as a motor. The gear post 71 both ends rotate with the upper and lower lateral wall of box body 4 respectively and are connected, have seted up the round hole on the specific box body 4 upper and lower lateral wall, fixedly provided with bearing on the round hole lateral wall, and gear post 71 lateral wall and bearing inner race lateral wall fixed connection. The driving source 72 is provided at the end of the gear post 71, and the driving source 72 can be controlled by a switch.
Referring to fig. 2 and 3, the gear post 71 is engaged with a first rack 73 and a second rack 74, and the first rack 73 and the second rack 74 are arranged in parallel at intervals and slidably connected to the case 4. The bottom walls of the first rack 73 and the second rack 74 are connected with the bottom wall of the box body 4, the bottom wall of the box body 4 is provided with a dovetail groove 41 along the length direction of the first rack 73 or the second rack 74, dovetail blocks 731 are fixedly arranged on the side wall of the first rack 73 connected with the bottom wall of the box body 4 and the side wall of the second rack 74 connected with the bottom wall of the box body 4, and the dovetail blocks 731 are inserted and slide in the dovetail groove 41.
Referring to fig. 2 and 3, the first and second racks 73 and 74 are slidably provided with fixing members on side walls remote from the bottom wall of the case 4. The fixed assembly comprises two fixed blocks 75 which are arranged at intervals in parallel, the fixed blocks 75 can be cuboid blocks, a sliding block 752 is fixedly arranged on the side wall, close to the first rack 73 or the second rack 74, of the fixed blocks 75, a slide 732 is arranged on the side wall, facing the fixed blocks 75, of the first rack 73 and the second rack 74, two ends of the slide 732 are closed, and the setting length of the slide 732 is determined according to specific setting parameters. Slider 752 is inserted and slid within slide 732 to effect a sliding connection of the securing assembly with either first rack 73 or second rack 74. The two fixed blocks 75 are further provided with a connecting block 76 at one end far away from the bottom wall of the box body 4, and two ends of the connecting block 76 are fixedly connected with the two fixed blocks 75 respectively, so that the two fixed blocks 75 slide synchronously along the first rack 73 or the second rack 74.
Referring to fig. 1 and 2, the opposite side walls of the two fixing blocks 75 are further provided with arc grooves 751, threads are arranged in the arc grooves 751, the arc grooves 751 penetrate through the fixing blocks 75, the two arc grooves 751 are aligned, the side walls of the two transducers 3 are provided with thread segments 31, and stable connection between the transducers 3 and the fixing assembly is achieved by connecting the transducers 3 to the two arc grooves 751 in a threaded manner.
Referring to fig. 2 and 3, when the driving source 72 drives the gear post 71 to rotate, the first rack 73 and the second rack 74 engaged with the gear post 71 move toward or away from each other along the arrangement path of the dovetail groove 41. Thereby driving the fixed assembly fixedly arranged on the first rack 73 and the second rack 74 and the transducer 3 which is in threaded connection with the fixed assembly to move. The distance of each movement of the first rack 73 and the second rack 74 is controlled to be 50mm by reasonably setting the angle at which the driving source 72 drives the gear post 71 each time. At this time, an operator can realize the movement of the position of the transducer 3 through the control switch, and the distance of each movement is 50mm, so that the operator does not need to mark on a wall body and position the transducer before detection.
Referring to fig. 2 and 3, the abutting assembly 6 includes a pushing assembly 63 and two sliding blocks 61, the sliding blocks 61 and a fixed block 75, and a first rack 73 and a second rack 74 are all arranged at parallel intervals, and the sliding blocks 61 are arranged at one side of the fixed block 75 away from the opening of the box body 4. A plurality of springs 62 are arranged between one sliding block 61 and the fixed block 75 as well as between the other sliding block 61 and the second rack 74. The two ends of the spring 62 are fixedly connected to the sliding block 61 and the fixed block 75, or the sliding block 61 and the first rack 73, or the sliding block 61 and the second rack 74, and the sliding block 61 is fixedly connected with a guide rod 611 penetrating through the spring 62, and correspondingly, the first rack 73, the second rack 74 and the fixed block 75 are provided with guide holes 741 for sliding the guide rod.
Referring to fig. 1 and 2, the pushing assembly 63 includes a first bump group including a plurality of first bumps 631 disposed at equal intervals, the plurality of first bumps 631 being disposed along a length direction of the first rack 73 and having a set height aligned with the first rack 73, and a second bump group including a plurality of second bumps 632 disposed at equal intervals, the plurality of second bumps 632 being disposed along a length direction of the second rack 74 and having a set height aligned with the second rack 74, the first bump group and the second bump group being fixedly disposed on an inner wall of the case 4 opposite to the opening. The end of the first bump 631 facing the first rack 73 and the end of the second bump 632 facing the second rack 74 each include a tapered land, and the length of the sidewall of the second bump 632 facing the opening of the case 4 is greater than the length of the first bump 631 along the direction.
Referring to fig. 1 and 2, when the sliding block 61 on the first rack 73 slides to align with the first bump 631, the inclined surface of the prismatic table can guide the sliding block 61 to slide away from the side wall of the fixed block 75 to abut against the first bump 631, and at the same time, the sliding block 61 on the second rack 74 also slides to abut against the corresponding side wall of the second bump 632 away from the box body 4. Through rationally setting up the interval between adjacent first lug or between the adjacent second lug to and the volume size of first lug 631, second lug 632, can realize that slider 61 removes 50mm for every, promptly with first lug 631 and the surface that box body 4 was kept away from to second lug 632 offset, slider 61 removes towards the direction of fixed block 75 this moment, and then promote fixed block 75 to remove towards the open-ended direction through spring 62, and the transducer 3 of fixing on the fixed block 75 also removes towards the wall body, and transducer 3 supports with the wall body tightly, in order to realize the detection to the crack degree of depth.
Referring to fig. 1 and 3, in order to enable the first rack 73 and the second rack 74 to smoothly slide along the dovetail groove 41, first through holes 42 through which the first rack 73 and the second rack 74 pass are formed in the side walls of two sides of the box body 4, and by providing the first through holes 42, the volume of the box body 4 is smaller, and the first rack 73 and the second rack 74 can normally move in the use process. Meanwhile, the bottom of the box body 4 is also provided with a second perforation 43, when the transducer 3 is installed, the connecting wire 2 connected with the tail of the transducer 3 can be placed in a gap between the sliding block 61 and the fixed block 75, and the box body 4 extends out of the second perforation 43, so that the other end of the connecting wire 2 is connected with the host 1.
Referring to fig. 1 and 2, because the crack depth is higher, an operator stands on the ground to lift the box body 4, so that the box body 4 is not easy to align in a positioning manner, scale lines 44 are arranged on the outer wall of the box body 4 away from the wall body, and particularly, a center alignment line 441 is arranged, and when the operator uses, the center alignment line 441 is aligned with the crack. And then the driving source 72 can be driven each time by reasonably setting the rotating angle of the gear column driven by the driving source 72 each time, the transducer 3 can move 50mm relatively or relatively, meanwhile, the transducer 3 is propped against the first convex block 631 and the second convex block 632 every 50mm, and the transducer 3 moves towards the wall body, so that the semi-automatic collection of three groups of data of crack depth detection is realized, and the operation is simple and convenient.
The implementation principle of the crack depth detector in the embodiment of the application is as follows: when the crack depth detector detects the crack depth at a higher position, firstly, two transducers 3 are respectively installed between fixed blocks 75 in the box body 4, and the positions of the transducers 3 are adjusted so that the surfaces of the transducers 3, which are in contact with a wall body, are flush with the side wall of the opening of the box body 4. Then, the supporting rod 5 is mounted on the box body 4, an operator lifts the supporting rod 5, so that the center alignment line 441 on the box body 4 is aligned with the crack, at this time, the two transducers 3 are respectively located at the place 50mm around the crack, and the transducers 3 are abutted against the first bump 631 and the second bump 632. After the operation host 1 detects the first group of detection data, an operator presses a switch, and starts the operation host through the switch control driving source 72, so that the gear column 71 is driven to rotate, and the first rack 73 and the second rack 74 meshed with the gear column 71 respectively move backwards by 50mm. During the movement of the first rack 73 and the second rack 74, the transducer 3 on the fixed block 75 moves along with it, and during the movement, the sliding block 61 is separated from the first projection 631 and the second projection 632, and is located between the two first projections 631 or the two second projections 632, and the surface of the transducer 3 is not in contact with the wall under the elastic restoring force of the spring 62. When the first rack 73 and the second rack 74 are moved, the sliding block 61 is abutted against the surfaces of the first convex block 631 and the second convex block 632 again, and the transducer 3 is abutted against the wall again, and at this time, the second set of data can be measured. With such a push, more sets of detection data can be detected. Thereby calculating the depth of the crack. The crack depth detector is convenient for operators to measure the depth of the crack at the higher position, and is simple and convenient in the operation and use process, so that the operators can test conveniently.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The utility model provides a crack depth detector, includes host computer (1), connecting wire (2) and two energy converter (3), connecting wire (2) are used for connecting energy converter (3) and host computer (1), its characterized in that: the box also comprises a box body (4) and a plurality of supporting rods (5), wherein the supporting rods (5) are detachably connected with the box body (4);
the energy converter (3) can be dismantled and set up in box body (4) and can remove in box body (4), be provided with in box body (4) and be used for driving energy converter (3) to move to support tight subassembly (6) with waiting to detect the wall and support tightly, still be provided with in box body (4) and be used for the distance to remove moving assembly (7) of energy converter (3), moving assembly (7) and support tight subassembly (6) and drive the direction that energy converter (3) removed mutually perpendicularly.
2. The crack depth detector as set forth in claim 1, wherein: the moving assembly (7) comprises a gear column (71) and a driving source (72) for driving the gear column (71) to rotate, and the gear column (71) is rotatably connected in the box body (4);
the gear column (71) is meshed with a first rack (73) and a second rack (74) which are parallel, the first rack (73) and the second rack (74) are both in sliding connection with the box body (4), and the two transducers (3) are different in length and are respectively arranged on the first rack (73) and the second rack (74).
3. The crack depth detector as set forth in claim 2, wherein: the surfaces of the first rack (73) and the second rack (74) are respectively fixed with a fixed component, and the fixed components are detachably connected with the transducer (3).
4. A crack depth detector as claimed in claim 3, characterized in that: the fixing assembly comprises two fixing blocks (75) which are arranged at intervals in parallel, arc grooves (751) are formed in the opposite side walls of the fixing blocks (75), threads are arranged in the arc grooves (751), and the transducer (3) is connected with the two fixing blocks (75) in a threaded mode.
5. The crack depth detector as set forth in claim 2, wherein: the box body (4) is provided with a dovetail groove (41) on the bottom wall, dovetail blocks (731) are fixed on the first rack (73) and the second rack (74), and the dovetail blocks (731) slide in the dovetail groove (41).
6. The crack depth detector as set forth in claim 4, wherein: slide ways (732) are arranged on the surfaces of the first racks (73) and the second racks (74), two ends of the slide ways (732) are closed, sliding blocks (752) are fixed on the fixed blocks (75), and the sliding blocks (752) slide in the slide ways (732).
7. The crack depth detector as set forth in claim 4, wherein: the abutting assembly (6) comprises a sliding block (61), a spring (62) is arranged between the sliding block (61) and the fixed block (75), and a pushing assembly (63) used for driving the sliding block (61) to move along the axis of the spring (62) is arranged on the box body (4).
8. The crack depth detector as set forth in claim 7, wherein: the pushing assembly (63) comprises a first lug group and a second lug group which are fixedly arranged on the side wall of the box body (4), the first lug group comprises a plurality of first lugs (631) which are arranged at equal intervals, the second lug group comprises a plurality of second lugs (632) which are arranged at equal intervals, one end of each first lug (631) close to each first rack (73) is provided with a tapered terrace, one end of each second lug (632) close to each second rack (74) is also provided with a tapered terrace, and the side wall of each terrace can be used for pushing the corresponding sliding block (61) to move when the sliding block (61) moves.
9. The crack depth detector as set forth in claim 2, wherein: the box body (4) is close to the side wall opening of the wall body, and a first perforation (42) for the first rack (73) and the second rack (74) to pass through and a second perforation (43) for the connecting line (2) to pass through are formed in the side wall of the box body (4).
10. The crack depth detector as set forth in claim 1, wherein: the box body (4) is made of transparent plastic, and scale marks (44) are arranged on the side wall, far away from the wall, of the box body (4).
CN202320350641.4U 2023-02-24 2023-02-24 Crack depth detector Active CN219319349U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320350641.4U CN219319349U (en) 2023-02-24 2023-02-24 Crack depth detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320350641.4U CN219319349U (en) 2023-02-24 2023-02-24 Crack depth detector

Publications (1)

Publication Number Publication Date
CN219319349U true CN219319349U (en) 2023-07-07

Family

ID=87031340

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320350641.4U Active CN219319349U (en) 2023-02-24 2023-02-24 Crack depth detector

Country Status (1)

Country Link
CN (1) CN219319349U (en)

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