CN212301362U

CN212301362U - Portable bridge crack detection device

Info

Publication number: CN212301362U
Application number: CN202021144020.3U
Authority: CN
Inventors: 李斌; 俞粟; 朱长春
Original assignee: Hangzhou Dadi Engineering Testing Technology Co ltd
Current assignee: Hangzhou Dadi Engineering Testing Technology Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-01-05
Anticipated expiration: 2030-06-18

Abstract

The utility model relates to a bridge crack detects the field, especially relates to portable bridge crack detection device, including base, the integrated tester of setting on the base, the top of base is provided with two mounting panels, two the upper end of mounting panel all is fixed with the first board that is the level setting, first board is perpendicular setting with the mounting panel, be provided with the joint spare of the dismouting probe of being convenient for on the first board, two be provided with the extensible member that is used for installing the camera between the mounting panel, be provided with the first driving piece that is used for driving two mounting panels simultaneously or to the back motion on the base, still be provided with on the base and be used for fixing the locating part on the base upper surface with the integrated tester, the below of base is provided with the roll member of being convenient for remove the base. The beneficial effects of this utility are: simple operation and convenient use.

Description

Portable bridge crack detection device

Technical Field

The utility model belongs to the technical field of the technique that the bridge crack detected and specifically relates to relate to portable bridge crack detection device.

Background

The crack detection of the bridge is always an important item, which is related to the safety of the bridge, and the cracks of the bridge are mainly concentrated at the bottom of the bridge at present.

Notice No. CN 208269949U's utility model discloses a portable bridge crack detection device, the on-line screen storage device comprises a base, a plurality of gyro wheels are installed to the lower lateral wall of base, the board is placed through a plurality of connecting rod fixedly connected with to the last lateral wall of base, the bridge crack detection device has been placed to the last lateral wall of placing the board, bridge crack detection device includes crack defect comprehensive tester, connecting wire and the microscopic probe of making a video recording, two are seted up to the last lateral wall of placing the board the recess is located bridge crack detection device's both sides, every equal sliding connection has the sliding block in the recess. The utility model discloses a fixed fracture defect integrated tester of having avoided carrying out the detection achievement time fracture defect integrated tester drops, removes the regulation of carrying out the height of the micro-probe of making a video recording through removing of slider, is applicable to the topography of co-altitude not, accomplishes the fissured detection to the bridge through the micro-probe of making a video recording and fracture defect integrated tester.

However, the above patents have the following disadvantages that in the actual measurement process, no matter the depth test is performed on the crack or the position progress calibration of the crack in the bridge is performed, three to five groups of data are required to be measured, and the known comprehensive tester needs to attach two probes to two sides of the crack in the use process, so that the position of the mounted probe needs to be adjusted not only in height but also in width, when the portable bridge crack detection device disclosed by the above patents is used, although the problem that the measurement can be performed on terrains with different heights is solved, when the two probes of the comprehensive tester are used for measuring in different widths, the mounting plate needs to be moved down, then the positions of the two probes are moved manually, after the positions are moved, the mounting plate needs to be lifted to the crack again for measurement, and when the data under different widths are collected in the whole process, the operation is complicated.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a portable bridge crack detection device has security height, the convenient effect of detection in the measurement process.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

portable bridge crack detection device, including base, the integrated tester of setting on the base, the top of base is provided with two mounting panels, two the upper end of mounting panel all is fixed with the first board that is the level setting, the first board is perpendicular setting with the mounting panel, be provided with the joint spare of the dismouting probe of being convenient for on the first board, two be provided with the extensible member that is used for installing the camera between the mounting panel, be provided with the first driving piece that is used for driving two mounting panels simultaneously or to the motion of dorsad on the base, still be provided with on the base and be used for fixing the integrated tester at the locating part on the base upper surface, the below of base is provided with the rolling member of being convenient for remove the base.

Through adopting above-mentioned technical scheme, when the sound value that three different width of group correspond is tested to needs, through the locating part with the integrated test appearance centre gripping on the base, make the integrated test appearance be difficult to drop in the test procedure, then fix the camera between two mounting panels, then fix the probe on first board through joint spare, when preparing the test, through the rolling member, promote the base, make the base be located under the test position, then through first driving piece, make two mounting panels realize the back of the body slip mutually in the rising, thereby realize gathering the data under the different width, the operation is simple, high durability and convenient use.

The utility model discloses further set up to: the first driving piece comprises a first groove formed in the upper surface of the base, a door type plate fixed in the first groove, a bidirectional screw rod rotating between the inner walls of the two ends of the door type plate, a hand wheel fixed at one end of the bidirectional screw rod and extending out of the door type plate, an installation block arranged below the installation plate, and a connecting piece arranged between the installation block and the installation plate and used for driving the installation plate to vertically move up and down, wherein the door type plate comprises two third plates and a fourth plate, the fourth plate is fixed on the upper end surfaces of the two third plates, the screw threads at the two ends of the bidirectional screw rod are arranged in opposite directions, the installation block slides in the first groove, the installation block is connected with the fourth plate in a sliding mode, the installation block is connected with the bidirectional screw rod in a threaded mode, and the two installation blocks are located at the two ends.

Through adopting above-mentioned technical scheme, when the mounting panel moved in opposite directions or to the back simultaneously, because the screw at two-way lead screw both ends revolves to being to thinking anti-setting, rotates the hand wheel this moment and makes two-way lead screw rotate, and two sliders of two-way lead screw drive slide in the first groove along the length direction in first groove in opposite directions or back to the back, through the connecting piece for two mounting panels also slide in opposite directions or back to the back simultaneously.

The utility model discloses further set up to: the connecting piece includes vertical slip fifth board on mounting panel lower extreme lateral wall, offer at the mounting panel near the dovetail of fifth board one side, fix the dovetail block that the fifth board is close to mounting panel one end, set up the pressure spring in the dovetail, rotate the reciprocating screw that is vertical setting on the installation piece, fix lead screw nut on the fifth board, set up and be used for driving reciprocating screw pivoted second driving piece on the installation piece, the dovetail block slides in the dovetail, pressure spring one end is fixed on the upper end inner wall of dovetail, the other end of pressure spring is fixed on the upper surface of dovetail block, the installation piece is the cavity setting, lead screw nut threaded connection is on reciprocating screw.

Through adopting above-mentioned technical scheme, the installation piece is at the removal in-process, through the reciprocal lead screw rotation of second driving piece drive, thereby screw nut and fifth board vertical rebound together, thereby realize the effect of adjusting the mounting panel height, probe contact when comprehensive tester is on the bottom surface of bridge, when needing to change the interval between two mounting panels and measure this moment, because the height of mounting panel can not change this moment, continue to rotate reciprocal lead screw, make the pressure spring compressed, thereby realize changing the interval between two mounting panels under the condition that does not change the mounting panel height.

The utility model discloses further set up to: the second driving piece comprises a rack fixed on the side wall of the fourth plate and a gear coaxially fixed at one end of the reciprocating lead screw, which extends into the inner cavity of the mounting block, and the gear is meshed with the rack.

Through adopting above-mentioned technical scheme, the in-process that the installation piece removed, gear and rack meshing to make reciprocal lead screw rotate, thereby at the in-process that two installation pieces were in opposite directions or removed to the back, make two mounting panels vertical sliding simultaneously, realize the effect of linkage, make to adjust more intelligent.

The utility model discloses further set up to: the joint spare is including setting up the splint of keeping away from mounting panel one end at the first board, fixing respectively at the guide arm at splint both ends, seting up respectively at the first board and keeping away from the guide way of mounting panel one end, setting up the first spring in the guide way, the vertical direction of axis perpendicular to of guide arm, the guide arm slides in the guide way, first spring one end is fixed on the one end inner wall of guide way towards the external world, the first spring other end is fixed on the one end terminal surface that the guide arm stretches into in the guide way, splint have seted up first arc wall near one side of first board, the first board has been close to one side of splint and has seted up the second arc wall, and the probe centre gripping of comprehensive testing appearance is between first arc wall and second arc wall.

Through adopting above-mentioned technical scheme, when needs are with the probe centre gripping of comprehensive tester on first board, pulling splint for first spring is stretched, then places the probe of comprehensive tester between first board and splint, then loosens splint, under the effect of first spring restoring force, makes the probe of comprehensive tester by the centre gripping between first arc wall and second arc wall, need not change the bolt through twisting completely and fix, easy operation, and the centre gripping is convenient.

The utility model discloses further set up to: the extensible member is including setting up the sixth board that is the level setting between two mounting panels, seting up second groove, the slip seventh board at the second inslot on sixth board one end terminal surface, seting up the third groove on sixth board other end terminal surface, the slip eighth board at the third inslot, sixth board one end is kept away from to the seventh board and is fixed on one of them mounting panel, the one end that the sixth board was kept away from to the eighth board is fixed on another mounting panel, and the camera of comprehensive test appearance is fixed on the upper surface of sixth board.

Through adopting above-mentioned technical scheme, when two mounting panels slided backward, the seventh board orientation is kept away from the direction removal of third groove, make the seventh board stretch out from the second inslot, the eighth board orientation is kept away from the direction removal of second groove, make the eighth board stretch out from the third inslot, thereby be convenient for adjust the interval between two mounting panels in real time, be convenient for the staff of being more measure the sound time value of different width intervals, the camera is fixed on the sixth board, can be along with the altitude variation real-time height-adjusting of mounting panel, in order to guarantee measurement accuracy.

The utility model discloses further set up to: the locating part includes that two are seted up the fourth groove on the base upper surface, slide butt piece, the second spring of setting in the fourth groove at the fourth inslot, fix the down tube on butt piece upper surface, fix and keep away from butt piece one end at the down tube and be vertical second board, the length direction in fourth groove is parallel arrangement with the length direction of base, second spring one end is fixed on fourth groove towards integrated tester one end inner wall, the second spring other end is fixed on butt piece, contained angle between down tube and the base is the acute angle setting, and the integrated tester centre gripping is between two second boards, two the second board is located between two fourth grooves.

Through adopting above-mentioned technical scheme, when fixing the integrated test appearance on the upper surface of base, stimulate two second boards, make two butt pieces slide to the back, thereby the second spring is compressed, then place the integrated test appearance between two second boards, loosen the second board, under the effect of second spring restoring force, make the butt of second board firmly on the outer wall of integrated test appearance, thereby the integrated test appearance just is fixed and is difficult to rock on the upper surface of base, and convenient for operation, make in testing process, the integrated test appearance is difficult to drop outside the bottom plate.

The utility model discloses further set up to: the rolling piece comprises a plurality of supporting rods which are fixed below the base and vertically arranged, a bottom plate which is arranged below the supporting rods, and two rolling wheels which rotate on the lower side faces of two ends of the bottom plate, wherein the bottom face of each supporting rod is fixed on the bottom plate.

Through adopting above-mentioned technical scheme, the staff of being convenient for removes the base, can inspect a plurality of positions of bridge bottom, can be used for placing the required instrument that uses in the testing process on the bottom plate, and the staff of being convenient for takes the part.

To sum up, the utility model discloses a beneficial technological effect does: the effect of changing the distance between the two mounting plates is realized while the two mounting plates are lifted, so that data under different widths are acquired, and the device is simple to operate and convenient to use; therefore, in the process that the two mounting blocks move in the opposite direction or in the back direction, the two mounting plates can vertically slide at the same time, the linkage effect is realized, and the adjustment is more intelligent; by arranging the clamping plate, the probe of the comprehensive tester is clamped between the first arc-shaped groove and the second arc-shaped groove, the probe is completely fixed without a screwing bolt, the operation is simple, and the clamping is convenient; the second plate and the second spring are arranged, so that the comprehensive tester is fixed on the base and is difficult to shake, and the comprehensive tester is difficult to fall out of the bottom plate in the detection process; through setting up the gyro wheel, the staff of being convenient for removes the base.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

fig. 2 is a schematic view of the whole structure of the limiting member in the present embodiment;

FIG. 3 is a schematic view showing the internal structure of the mounting block of the present embodiment;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

fig. 5 is a schematic view of the overall structure of the clip of the present embodiment;

fig. 6 is a sectional view showing the entire structure of the telescopic member of the present embodiment.

Reference numerals: 1. a base; 2. a comprehensive tester; 3. mounting a plate; 4. a first plate; 5. a clamping piece; 6. a telescoping member; 7. a first driving member; 8. a limiting member; 9. a rolling member; 10. a first groove; 11. a door profile; 12. a bidirectional lead screw; 13. a hand wheel; 14. mounting blocks; 15. a connecting member; 16. a third plate; 17. a fourth plate; 18. a fifth plate; 19. a dovetail groove; 20. a dovetail block; 21. a pressure spring; 22. a reciprocating screw; 23. a lead screw nut; 24. a second driving member; 25. a rack; 26. a gear; 27. a splint; 28. a guide bar; 29. a guide groove; 30. a first spring; 31. a first arc-shaped slot; 32. a second arc-shaped slot; 33. a sixth plate; 34. a second groove; 35. a seventh plate; 36. a third groove; 37. an eighth plate; 38. a fourth groove; 39. a butting block; 40. a second spring; 41. a diagonal bar; 42. a second plate; 43. a strut; 44. a base plate; 45. and a roller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, for the portable bridge crack detection device disclosed by the utility model, including the base 1 and the comprehensive tester 2, the comprehensive tester 2 adopts the comprehensive tester 2 with model F800 under the Smart Bo Union flag, the base 1 is a horizontally placed rectangular plate, the bottom of the base 1 is provided with the rolling member 9 convenient for the movement of the base 1, the rolling member 9 includes the supporting rod 43, the bottom plate 44 and the rollers 45, four supporting rods 43 are respectively vertically arranged, four supporting rods 43 are respectively arranged at four corners of the base 1, the bottom plate 44 is arranged below the supporting rod 43, one end of the supporting rod 43 far away from the base 1 is fixed on the upper surface of the bottom plate 44, four rollers 45 are all rotatably connected on the lower surface of the bottom plate 44, in the using process, when the position of the base 1 needs to be moved, the base 1 is pushed, so that the rollers 45 roll on the ground, thereby realizing the movement of the base 1, the base 1 is convenient to move, and parts required by the testing process such as a storage battery can be placed on the upper surface of the bottom plate 44.

As shown in fig. 1 and fig. 2, the base 1 is further provided with a limiting member 8 for fixing the comprehensive tester 2 on the upper surface of the base 1, the limiting member 8 includes a fourth groove 38, an abutting block 39, a second spring 40, an inclined rod 41 and a second plate 42, two fourth grooves 38 are opened on the upper surface of the base 1, the length direction of the fourth grooves 38 is parallel to the length direction of the base 1, the abutting block 39 slides in the fourth grooves 38, the comprehensive tester 2 is located between the two fourth grooves 38, one end of the second spring 40 is fixed on the inner wall of one end of the fourth groove 38 facing the comprehensive tester 2, the other end of the second spring 40 is fixed on one side of the abutting block 39 far away from the comprehensive tester 2, the inclined rod 41 is fixed on the upper surface of the abutting block 39, the upper end of the inclined rod 41 inclines towards the direction close to the comprehensive tester 2, the included angle between the inclined rod 41 and the length direction of the base 1 is an acute angle, the second plate 42 is vertical, two second plates 42 are located between two fourth grooves 38, the second plate 42 is fixed at one end of the inclined rod 41 far away from the abutting block 39, the comprehensive tester 2 is clamped between the two second plates 42, when the comprehensive tester 2 is fixed on the upper surface of the base 1, the two second plates 42 are pulled, so that the two abutting blocks 39 slide backwards, the second spring 40 is compressed, then the comprehensive tester 2 is placed between the two second plates 42, the second plates 42 are released, under the action of restoring force of the second spring 40, the second plates 42 are firmly abutted on the outer wall of the comprehensive tester 2, and therefore the comprehensive tester 2 is fixed on the upper surface of the base 1 and is difficult to shake.

As shown in fig. 1 and 3, two mounting plates 3 are arranged above a base 1, the two mounting plates 3 are arranged vertically, a first driving member 7 for driving the two mounting plates 3 to move towards or away from each other simultaneously is arranged on the base 1, the first driving member 7 comprises a first groove 10, a door-shaped plate 11, a bidirectional screw 12, a hand wheel 13, a mounting block 14 and a connecting member 15 arranged between the mounting block 14 and the mounting plates 3 for driving the mounting plates 3 to move vertically up and down, the first groove 10 is arranged on the upper surface of the base 1, the length direction of the first groove 10 is parallel to the length direction of the base 1, the door-shaped plate 11 comprises two third plates 16 and a fourth plate 17, the two third plates 16 are arranged vertically, the two third plates 16 are respectively arranged at two ends of the first groove 10, the third plate 16 is fixed on the bottom surface of the first groove 10, the fourth plate 17 is fixed on the upper end surfaces of the two third plates 16, two-way lead screw 12 rotates to be connected between two third boards 16, two-way lead screw 12 one end extends to outside door template 11, hand wheel 13 is fixed on two-way lead screw 12 stretches out the outer terminal surface of door template 11 one end, the screw thread of two-way lead screw 12 both ends is to being opposite setting, two installation piece 14 difference threaded connection are at two-way lead screw 12's both ends, installation piece 14 is the cavity setting, the lower extreme sliding connection of installation piece 14 is in first groove 10, fourth board 17 wears to establish on installation piece 14, the upper end and the fourth board 17 sliding connection of installation piece 14, thereby when realizing that two mounting panel 3 move in opposite directions or dorsad simultaneously, rotation hand wheel 13 makes two-way lead screw 12 rotate, two sliders of two-way lead screw 12 drive are in opposite directions or are slided in first groove 10 along the length direction of first groove 10 dorsad, thereby realize that two mounting panel 3 are in opposite directions or are slided dorsad.

As shown in fig. 3 and 4, the joint 15 includes a fifth plate 18, a dovetail groove 19, a dovetail block 20, pressure spring 21, reciprocal lead screw 22, screw nut 23 and the setting are used for driving reciprocal lead screw 22 pivoted second driving piece 24 on installation block 14, fifth plate 18 is perpendicular setting with mounting panel 3, dovetail 19 is seted up on the outer wall of mounting panel 3, the length direction and the vertical direction of dovetail 19 are parallel arrangement, dovetail 20 is fixed in the one end that fifth plate 18 is close to mounting panel 3, dovetail 20 vertically slides in dovetail 19, pressure spring 21 one end is fixed on the upper end inner wall of dovetail 19, the other end of pressure spring 21 is fixed on the upper surface of dovetail 20, screw nut 23 is fixed on fifth plate 18, reciprocal lead screw 22 is vertical setting, reciprocal lead screw 22 rotates to be connected on installation block 14, screw nut 23 threaded connection is on reciprocal lead screw 22.

As shown in fig. 3, the second driving member 24 includes a rack 25 and a gear 26, the rack 25 is fixed on one side of the fourth plate 17, the rack 25 is slidably connected to the mounting block 14, the gear 26 is coaxially fixed on an end surface of one end of the reciprocating lead screw 22 extending into the inner cavity of the mounting block 14, the gear 26 is engaged with the rack 25, so that during the movement of the mounting block 14, the gear 26 is engaged with the rack 25, thereby rotating the reciprocating lead screw 22, and thereby enabling the two mounting plates 3 to vertically slide simultaneously during the movement of the two mounting blocks 14 toward or away from each other.

As shown in fig. 3 and 5, the first plate 4 is provided with a clamping member 5 for facilitating the assembly and disassembly of the probe, the clamping member 5 includes a clamping plate 27, a guide rod 28, a guide groove 29 and a first spring 30, the clamping plate 27 is located at one end of the first plate 4 far away from the mounting plate 3, one side of the clamping plate 27 close to the first plate 4 is provided with a first arc-shaped groove 31, one side of the first plate 4 close to the clamping plate 27 is provided with a second arc-shaped groove 32, so that the probe of the comprehensive tester 2 is clamped between the first arc-shaped groove 31 and the second arc-shaped groove 32, the two guide rods 28 are respectively fixed at two ends of the clamping plate 27, the axis of the guide rod 28 is perpendicular to the vertical direction, the two guide grooves 29 are both opened on the end surface of the first plate 4 far away from the mounting plate 3, the two guide grooves 29 are respectively located at two sides of the first plate 4, the guide rod 28 slides in the guide groove 29, the first spring 30 is arranged in the guide groove 29, the other end of the first spring 30 is fixed to an end surface of the guide rod 28 that extends into the guide groove 29.

As shown in fig. 5, when it is necessary to clamp the probe of the integrated tester 2 (shown in fig. 1) on the first plate 4, the clamping plate 27 is pulled so that the first spring 30 is stretched, then the probe of the integrated tester 2 is placed between the first plate 4 and the clamping plate 27, then the clamping plate 27 is released so that the probe of the integrated tester 2 (shown in fig. 1) is clamped between the first arc-shaped groove 31 and the second arc-shaped groove 32 by the restoring force of the first spring 30.

As shown in fig. 3 and 6, a telescopic member 6 for mounting a camera of the integrated tester 2 (shown in fig. 1) is arranged between the two mounting plates 3, the telescopic member 6 comprises a sixth plate 33, a second groove 34, a seventh plate 35, a third groove 36 and an eighth plate 37, the sixth plate 33 is horizontally arranged, the second groove 34 is arranged on one end face of the sixth plate 33, one end of the seventh plate 35 is slidably connected in the second groove 34, the other end of the seventh plate 35 is fixed on one of the mounting plates 3, the third groove 36 is arranged on the other end face of the sixth plate 33, one end of the eighth plate 37 is slidably connected in the third groove 36, the other end of the eighth plate 37 is fixed on the other mounting plate 3, the camera of the integrated tester 2 (shown in fig. 1) is fixed on the upper surface of the sixth plate 33, so that when the two mounting plates 3 slide back, the seventh plate 35 moves away from the third groove 36, so that the seventh plate 35 projects from the second slot 34 and the eighth plate 37 is moved away from the second slot 34 so that the eighth plate 37 projects from the third slot 36.

The implementation principle of the embodiment is as follows: when three sets of sound values corresponding to different widths need to be tested, the two second plates 42 are pulled first to enable the two abutting blocks 39 to slide backwards, so that the second springs 40 are compressed, then the comprehensive tester 2 is placed between the two second plates 42, the second plates 42 are released, the second plates 42 are firmly abutted against the outer wall of the comprehensive tester 2 under the action of the restoring force of the second springs 40, so that the comprehensive tester 2 is fixed on the upper surface of the base 1 and is difficult to shake, then the clamping plate 27 is pulled to enable the first springs 30 to be stretched, then the probes of the comprehensive tester 2 are placed between the first plates 4 and the clamping plate 27, then the clamping plate 27 is released, the probes of the comprehensive tester 2 are clamped between the first arc-shaped grooves 31 and the second arc-shaped grooves 32 under the action of the restoring force of the first springs 30, and after the probes and the comprehensive tester 2 are installed, vaseline is sprayed or butter is smeared at the crack of the bridge, then a hand wheel 13 is rotated to enable a bidirectional screw 12 to rotate, the bidirectional screw 12 drives two sliding blocks to slide in the first groove 10 along the length direction of the first groove 10 in an opposite direction, a gear 26 is meshed with a rack 25 in the moving process of an installation block 14, so that a reciprocating screw 22 rotates, under the action of a screw nut 23, an installation plate 3 moves vertically upwards until the upper end face of a probe is attached to a butter layer, the first group of data is measured at the moment, then the hand wheel 13 is rotated continuously to increase the distance between the two installation blocks 14 by one centimeter, at the moment, the probe cannot move upwards continuously, so that a dovetail block 20 slides downwards vertically in the translation process of the probe, the probe can move horizontally without rising, the second group of data is measured, the hand wheel 13 is rotated continuously, and then a third group of data is measured, the probe does not need to be manually moved in the whole process, and the data measurement is convenient.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. Portable bridge crack detection device, including base (1), set up comprehensive tester (2) on base (1), its characterized in that: the top of base (1) is provided with two mounting panels (3), two the upper end of mounting panel (3) all is fixed with first board (4) that is the level setting, first board (4) are perpendicular setting with mounting panel (3), be provided with joint spare (5) of the dismouting probe of being convenient for on first board (4), two be provided with expansion part (6) that are used for installing the camera between mounting panel (3), be provided with first driving piece (7) that are used for driving two mounting panels (3) simultaneously in opposite directions or to the motion of the back, still be provided with on base (1) and be used for fixing locating part (8) on base (1) upper surface with comprehensive tester (2), the below of base (1) is provided with rolling member (9) of being convenient for remove base (1).

2. The portable bridge crack detection device of claim 1, wherein: the first driving part (7) comprises a first groove (10) formed in the upper surface of the base (1), a door-shaped plate (11) fixed in the first groove (10), a bidirectional screw rod (12) rotating between the inner walls of two ends of the door-shaped plate (11), a hand wheel (13) fixed at one end of the bidirectional screw rod (12) and extending out of the door-shaped plate (11), a mounting block (14) arranged below the mounting plate (3), and a connecting piece (15) arranged between the mounting block (14) and the mounting plate (3) and used for driving the mounting plate (3) to vertically move up and down, the door-shaped plate (11) comprises two third plates (16) and a fourth plate (17), the fourth plate (17) is fixed on the upper end surfaces of the two third plates (16), the screw threads at two ends of the bidirectional screw rod (12) are arranged in opposite directions, the mounting block (14) slides in the first groove (10), and the mounting block (14) is connected with the fourth plate (17) in a sliding manner, the mounting blocks (14) are in threaded connection with the bidirectional screw rod (12), and the two mounting blocks (14) are respectively located at two ends of the bidirectional screw rod (12).

3. The portable bridge crack detection device of claim 2, wherein: the connecting piece (15) comprises a fifth plate (18) which vertically slides on the side wall of the lower end of the mounting plate (3), a dovetail groove (19) which is formed in one side of the mounting plate (3) close to the fifth plate (18), a dovetail block (20) which is fixed to one end of the fifth plate (18) close to the mounting plate (3), a pressure spring (21) which is arranged in the dovetail groove (19), a reciprocating lead screw (22) which vertically arranges on the mounting block (14) in a rotating manner, a lead screw nut (23) which is fixed on the fifth plate (18), and a second driving piece (24) which is arranged on the mounting block (14) and is used for driving the reciprocating lead screw (22) to rotate, wherein the dovetail block (20) slides in the dovetail groove (19), one end of the pressure spring (21) is fixed on the inner wall of the upper end of the dovetail groove (19), the other end of the pressure spring (21) is fixed on the upper surface of the dovetail block (20), and the mounting, the screw rod nut (23) is in threaded connection with the reciprocating screw rod (22).

4. The portable bridge crack detection device of claim 3, wherein: the second driving part (24) comprises a rack (25) fixed on the side wall of the fourth plate (17) and a gear (26) coaxially fixed at one end of the reciprocating lead screw (22) extending into the inner cavity of the mounting block (14), and the gear (26) is meshed with the rack (25).

5. The portable bridge crack detection device of claim 1, wherein: the clamping piece (5) comprises a clamping plate (27) arranged at one end of the first plate (4) far away from the mounting plate (3), guide rods (28) fixed at two ends of the clamping plate (27) respectively, a guide groove (29) arranged at one end of the first plate (4) far away from the mounting plate (3) respectively, and a first spring (30) arranged in the guide groove (29), wherein the axis of the guide rod (28) is perpendicular to the vertical direction, the guide rod (28) slides in the guide groove (29), one end of the first spring (30) is fixed on the inner wall of one end of the guide groove (29) facing the outside, the other end of the first spring (30) is fixed on the end face of one end of the guide rod (28) extending into the guide groove (29), one side of the clamping plate (27) close to the first plate (4) is provided with a first arc-shaped groove (31), one side of the first plate (4) close to the clamping plate (27) is provided with a second arc-shaped groove, the probe of the comprehensive tester (2) is clamped between the first arc-shaped groove (31) and the second arc-shaped groove (32).

6. The portable bridge crack detection device of claim 1, wherein: the telescopic piece (6) comprises a sixth plate (33) which is horizontally arranged between the two mounting plates (3), a second groove (34) which is formed in one end face of the sixth plate (33), a seventh plate (35) which slides in the second groove (34), a third groove (36) which is formed in the other end face of the sixth plate (33), and an eighth plate (37) which slides in the third groove (36), wherein one end of the seventh plate (35) far away from the sixth plate (33) is fixed on one of the mounting plates (3), one end of the eighth plate (37) far away from the sixth plate (33) is fixed on the other mounting plate (3), and a camera of the comprehensive tester (2) is fixed on the upper surface of the sixth plate (33).

7. The portable bridge crack detection device of claim 1, wherein: the limiting piece (8) comprises two fourth grooves (38) formed in the upper surface of the base (1), a butting block (39) sliding in the fourth grooves (38), a second spring (40) arranged in the fourth grooves (38), an inclined rod (41) fixed on the upper surface of the butting block (39), and a second plate (42) fixed at one end, far away from the butting block (39), of the inclined rod (41) and vertical, the length direction of the fourth groove (38) is parallel to the length direction of the base (1), one end of the second spring (40) is fixed on the inner wall of one end of the fourth groove (38) facing the comprehensive tester (2), the other end of the second spring (40) is fixed on the abutting block (39), an included angle between the inclined rod (41) and the base (1) is arranged at an acute angle, the comprehensive tester (2) is clamped between two second plates (42), and the second plates (42) are located between two fourth grooves (38).

8. The portable bridge crack detection device of claim 1, wherein: the rolling part (9) comprises a plurality of supporting rods (43) which are fixed below the base (1) and vertically arranged, a bottom plate (44) arranged below the supporting rods (43) and two rollers (45) which rotate on the lower side faces of two ends of the bottom plate (44), and the bottom surfaces of the supporting rods (43) are fixed on the bottom plate (44).