CN117451734A

CN117451734A - Concrete bridge bottom surface crack detection device and application method thereof

Info

Publication number: CN117451734A
Application number: CN202311308949.3A
Authority: CN
Inventors: 张妮; 张璐; 田启超; 闫东升
Original assignee: Beijing Bridge Ruitong Technology Development Co ltd
Current assignee: Beijing Bridge Ruitong Technology Development Co ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2024-01-26

Abstract

The invention belongs to the technical field of bridge detection, in particular to a concrete bridge bottom surface crack detection device and a use method thereof, which solve the defects that the prior technical scheme has potential safety hazards in use and is troublesome in actual use.

Description

Concrete bridge bottom surface crack detection device and application method thereof

Technical Field

The invention relates to the technical field of bridge detection, in particular to a concrete bridge bottom surface crack detection device and a use method thereof.

Background

With the increase of bridges in China, the safety of the bridges is more and more concerned. The safety problem of the bridge is concentrated on the problem of bridge cracks, if the bridge cracks cannot be repaired for a long time, the impermeability of bridge concrete can be reduced, corrosion of steel bars is caused, the durability of the concrete is reduced, the bearing capacity of the bridge is affected, and serious damage is caused, so that accurate detection of the bridge is very important.

According to the application publication number: CN113638314a is equipment for bridge bottom crack detection and a method for using the same, which relates to the technical field of bridge detection, and comprises two connecting devices, two driving devices and a walking frame arranged below the bridge, wherein the two connecting devices are arranged on two sides of the bridge, the walking frame comprises two side frames connected with the corresponding connecting devices respectively, two groups of connecting components connected with the two side frames respectively and a middle frame connected with the two groups of connecting components respectively, the connecting components comprise a plurality of connecting rods, each connecting rod comprises two connecting rods rotationally connected with the side frames and the middle frame respectively, two reset pieces arranged on one side of the corresponding connecting rods and locking pieces used for locking the two connecting rods, the rotating shafts of the connecting rods are parallel to the vertical direction, two connecting rods in the two connecting rods far away from each other are mutually locked, and one ends of the two connecting rods in the middle connecting rods, which are close to each other, are all propped against the bridge pier. The application has the effect of improving detection efficiency.

The detection device still has some defects in actual use:

1. the technical scheme is that the bridge is provided with the bracket for supporting the inspector, and the inspection is performed manually in the later period, so that certain potential safety hazards exist in actual use;

2. according to the technical scheme, when the bottom surface of the bridge is required to be detected, detection of different areas of the bottom surface of the bridge cannot be realized, so that the detection equipment is required to be manually moved, and convenience is not provided during actual use.

Aiming at the problems, the invention provides a concrete bridge bottom surface crack detection device and a use method thereof.

Disclosure of Invention

The invention provides a concrete bridge bottom surface crack detection device and a use method thereof, which solve the defects that the prior technical scheme has potential safety hazard in use and is troublesome in actual use.

The invention provides the following technical scheme:

a concrete bridge floor crack detection device, comprising:

the walking mechanism is provided with a positioning mechanism at one side, the positioning mechanism is connected with a supporting pipe, the bottom end of the supporting pipe is fixedly provided with a connecting box, and the bottom of the connecting box is fixedly provided with a bottom plate;

The detection mechanisms are arranged at the top of the bottom plate and used for detecting cracks on the bottom of the bridge, and the detection mechanisms are connected with marking mechanisms and used for marking the cracks;

the transmission mechanism is arranged in the connecting box, one side of the transmission mechanism extends to the outer side of the connecting box and is connected with the top of the bottom plate, the transmission mechanism is respectively connected with the detection mechanisms and is used for synchronously driving the detection mechanisms, the top end of the transmission mechanism penetrates through the supporting tube and extends to the upper side of the supporting tube, and the transmission mechanism is connected with the travelling mechanism.

In one possible design, running gear includes L type frame, positioning mechanism is connected with one side of L type frame, and the top fixed mounting of L type frame has the biax motor, an output shaft of biax motor is connected with drive mechanism, and drive assembly is installed at the inboard top of L type frame, one side of drive assembly extends to one side of L type frame, and drive assembly is connected with another output shaft of biax motor, and support assembly is installed to the opposite side bottom of L type frame, and support assembly is used for walking to support L type frame, drive assembly through the start-up biax motor and operate, so can provide power for L type frame lateral shifting, and after utilizing positioning mechanism to connect with the stay tube, can drive a plurality of detection mechanism and carry out lateral position adjustment when L type frame removes, so as to detect the different position of bridge bottom surface.

In one possible design, the driving assembly comprises a fixing frame fixedly installed at the top of the inner side of the L-shaped frame, a driving shaft is rotationally connected to the fixing frame, a driving wheel is fixedly sleeved on the driving shaft, one end of the driving shaft extends to one side of the L-shaped frame, belt pulleys are fixedly installed on one end of the driving shaft and the other output shaft of the double-shaft motor, the two belt pulleys are sleeved with the same belt, a limiting member is installed on the inner wall of one side of the fixing frame, one side of the limiting member extends to the outer side of the fixing frame, one side of the limiting member is connected with one side of the fixing frame, the driving wheel can be driven to rotate when the driving shaft rotates along with the output shaft of the double-shaft motor through the belt, the driving wheel and a circular pipe handrail on a guardrail on a bridge keep stable transmission, and therefore when the driving wheel rotates, the driving wheel can drive the whole device to move, the shape of the driving wheel is not only limited to the dumbbell type shown in the drawing, and the shape of the driving wheel can be exchanged when the handrail encounters handrails with different shapes.

In a possible design, spacing component is including running through the backup pad of sliding connection on mount one side inner wall, and the backup pad is located one side rotation that the mount is connected with the backing wheel, a plurality of draw-in grooves have been seted up to equidistant at the top of backup pad, one side fixed mounting of mount has the gag lever post, and the slip cap is equipped with arc type fixture block on the gag lever post, arc type fixture block respectively with a plurality of draw-in groove detachable cartridge, the cover is equipped with the compression spring who is located arc type fixture block one side on the gag lever post, and compression spring's both ends respectively with one end of gag lever post and one side fixed connection of arc type fixture block, drive the pipe handrail that the backing wheel is close to on the guardrail through promoting the backup pad, until the emergence is contacted, alright utilize the backing wheel to provide holding power to L type frame, can effectually prevent that L type frame slope outwards, when utilizing arc type fixture block and corresponding draw-in groove to carry out the cartridge simultaneously, can keep stable braking to the backup pad, so that the backing wheel can provide stable holding power.

In one possible design, the supporting component includes the screw thread board of fixed mounting in L type frame opposite side bottom, and one side fixed mounting of screw thread board has the limiting plate, run through sliding connection on the limiting plate has the removal frame, it is connected with adjusting screw to rotate on the bottom inner wall of removal frame, threaded hole has been seted up on the screw thread board, and adjusting screw runs through the screw hole respectively and removes the top inner wall of frame and extend to the top of removing the frame, adjusting screw and screw hole threaded connection, the bottom rotation of removing the frame is connected with the supporting wheel, can drive to remove the frame and reciprocate through rotating adjusting screw, through the height of adjusting the supporting wheel for the supporting wheel keeps contact with the road surface of bridge, can provide stable holding power to L type frame, later when installing the stay tube, also can share the pressure that the drive wheel received.

In a possible design, positioning mechanism includes the U type bracket of fixed mounting in L type frame one side, and the stay tube runs through U type bracket, fixed cover is equipped with the die-ring that is located U type bracket top on the stay tube, the equal sliding connection in both sides of die-ring has the clamping lever, the both sides of U type bracket all fixed mounting has the cardboard, and the card hole has been seted up on the cardboard, the bottom of clamping lever runs through corresponding card hole and clamps mutually with the card hole, the top fixed mounting of two clamping levers has the same removal ring, remove the ring slip cap and establish on the stay tube, the cover is equipped with the brake spring that is located between die-ring and the removal ring on the stay tube, and the top and the bottom of brake spring respectively with the top fixed connection of removal ring, utilize the die-ring to put on U type bracket after, can form the holding power to stay tube stability, and when utilizing the card pole to pass corresponding card hole, can form the clamping effect, make stay tube and U type bracket carry out stable connection, lateral displacement can not take place.

In a possible design, drive mechanism is including rotating the pivot of connecting on the inner wall of connection box bottom, the top of pivot runs through the stay tube and extends to the top of stay tube, the pivot is connected with the inner wall rotation of stay tube, the top fixed mounting of pivot has driven bevel gear, and fixed mounting has driving bevel gear on the output shaft of biax motor, driving bevel gear meshes with driven bevel gear mutually, one side inner wall rotation of connection box is connected with the connecting axle, and fixed cover is equipped with the worm that is located the connection box in the pivot, fixed cover is equipped with the worm wheel on the connecting axle, the worm meshes with the worm wheel, the one end of connecting axle extends to the outside of connection box and rotates with the top of bottom plate and be connected, and the connecting axle is connected with a plurality of detection mechanism respectively, after driving bevel gear and driven bevel gear carry out the meshing transmission, can be with the power transmission that biax motor produced in the pivot, and when driving bevel gear and driven bevel gear carry out the meshing transmission, can be limited the high position of pivot, in order to prevent that the stay tube can take place upwards moving possibility, guarantee card pole and card hole steady clamping, and when rotating, can carry out the worm wheel and the effect through the worm and can carry out the rotation under the effect of the drive of this rotation of the rotation, can carry out the transmission assembly simultaneously.

In a possible design, detection mechanism includes the smooth case of fixed mounting at the bottom plate top, and sliding connection has L type slide in the smooth case, the top of L type slide extends to smooth case top and fixed mounting has the probe of making a video recording, and the one side of making a video recording the probe is installed reciprocating subassembly, reciprocating subassembly is connected with the connecting axle, keep being connected back at reciprocating subassembly and connecting axle, can carry out the transmission to L type slide, so can realize driving the probe of making a video recording and remove, so that can shoot the detection to the region of bridge bottom surface difference, and set up multiunit detection mechanism's purpose and be able to promote the cycle of making a video recording the probe, can reduce the problem of shooting the dead angle, thereby can more comprehensive detect the bottom surface of bridge, reciprocating subassembly includes the fixed cover and establishes at the epaxial roller of driving, and set up on the driving roller and be the heliciform drive ring, the cover is equipped with the drive ring on the roller, the fixed mounting dog on the side inner wall of drive ring, one side of dog extends to in and cooperates with the inner wall transmission of ring channel, one side fixed mounting pole of drive the drive ring, one side of drive ring can carry out the transverse motion with the drive ring groove along with the L type fixed connection of drive ring groove, can carry out the transverse motion along with the annular groove when the L type is connected with the drive ring groove.

In a possible design, marking mechanism includes the mounting box of fixed mounting in L type slide one side, sliding connection has the drive plate in the mounting box, the removal hole has been seted up on the one side inner wall of mounting box, one side fixed mounting of drive plate has the mounting panel, and one side of mounting panel runs through the slide hole and extends to the outside of mounting box, the top symmetry fixed mounting of drive plate has two ejector pins, and sliding connection has same layer board on two ejector pins, the top fixed mounting of layer board has the marker pen, the top of marker pen extends to the top of mounting box, the cover is equipped with the extension spring that is located the layer board top on the ejector pin, and the top and the bottom of extension spring respectively with the top of ejector pin and the top fixed connection of layer board, one side top fixed mounting of mounting box has electric putter, electric putter's output shaft and the top fixed connection of mounting panel, after the crack of bridge bottom is shot to the camera, start electric putter and drive the mounting panel upward movement this moment, so can be under the drive of two ejector pins, can upwards shift out the marker, can be with the marker with the bridge along with the marker, the ground along with the top of the mounting box, the L type can carry out the slip to the bridge when the L type is transversely marked.

The application method of the concrete bridge bottom surface crack detection device comprises the following steps:

s1, a worker puts a driving wheel on a circular tube handrail on a guardrail at the side of a bridge, and sets one side provided with a U-shaped bracket at the outer side of the guardrail, and then pushes a supporting plate to drive a baffle wheel to move transversely, so that the baffle wheel is contacted with the side surface of the circular tube handrail, and a ninety-degree included angle formed by the baffle wheel and the driving wheel plays a limiting role on an L-shaped frame;

s2, then releasing the arc-shaped clamping blocks, at the moment, driving the arc-shaped clamping blocks to move under the action of elastic potential energy of the compression springs, enabling the arc-shaped clamping blocks to move into corresponding clamping grooves, limiting the supporting plates, braking the baffle wheels, after the supporting pipes are installed on the L-shaped frames, playing a role in pulling the L-shaped frames, rotating the adjusting screw, at the moment, enabling the adjusting screw to move downwards under the action of thread transmission with the thread plates, driving the moving frames to move downwards, and adjusting the heights of the supporting wheels until the supporting wheels are in tight contact with side edge surrounding baffles of the bridge when the moving frames move downwards, so that the L-shaped frames are stably supported, and outwards tilting of the L-shaped frames is prevented;

S3, after the L-shaped frame is installed, the supporting tube is placed on the U-shaped bracket through the supporting ring, the clamping rods correspond to the clamping holes on the corresponding clamping plates, then the moving ring is released, the stressed braking springs pull the moving ring to move downwards, at the moment, the clamping rods penetrate through the corresponding clamping holes respectively, the clamping rods are clamped with the U-shaped bracket, and the supporting tube is further positioned;

s4, after the supporting tube is installed and positioned, a plurality of camera probes are arranged below the bridge, after the double-shaft motor is started, two output shafts on the double-shaft motor synchronously run, so that under the transmission cooperation of the two belt pulleys and the belt, the driving shaft is driven to rotate, the driving wheel is driven to rotate, at the moment, under the transmission action of static friction force between the driving wheel and the round tube handrail, the L-shaped frame is enabled to move, and therefore walking power is provided when the plurality of detection assemblies are used for transverse position adjustment, and the detection of the bottom surface of the bridge is facilitated;

s5, after the double-shaft motor runs, under the meshing transmission action of the driving bevel gear and the driven bevel gear, the rotating shaft is driven to rotate, at the moment, under the meshing transmission action of the worm and the worm wheel, the connecting shaft is driven to rotate, when the connecting shaft rotates, the plurality of driving rollers are driven to rotate, when the driving rollers rotate, at the moment, under the transmission cooperation action of the annular groove and the stop block, the driving ring is driven to transversely reciprocate along the axis direction of the driving rollers, and when the driving ring moves, the L-shaped sliding plate is driven to transversely reciprocate through the mounting rod, so that the camera probe is driven to transversely reciprocate, and scanning detection is carried out on the area covered by the bottom plate in the moving process;

S6, after the camera shoots a crack at the bottom of the bridge, the electric push rod is started to drive the mounting plate to move upwards at the moment, and the driving plate can be driven to move upwards at the moment, so that the supporting plate can be lifted upwards under the driving of the two ejector rods, and the marking pen can be moved out of the mounting box until the marking pen is contacted with the ground of the bridge, and at the moment, the mounting box can mark the ground of the bridge by marking when the mounting box slides transversely along with the L-shaped sliding plate;

s7, the camera probe is connected with a mobile phone of a maintainer in a wireless transmission mode, so that pictures shot by the camera probe can be transmitted to the mobile phone in real time, and the maintainer can conveniently watch the pictures.

According to the invention, the L-shaped frame is placed on the guardrail of the bridge, so that the driving wheel is in close contact with the round pipe handrail part of the guardrail, the driving wheel can be driven to rotate by starting the double-shaft motor, the whole device can be driven to move, when the bottom surface of the bridge is detected by utilizing a plurality of detection devices, different areas of the bottom surface of the bridge can be conveniently shot and detected, the detection of all areas of the bottom surface of the bridge in a short time is realized, and the detection efficiency is improved;

According to the invention, after the L-shaped frame is arranged on the circular tube handrail on the guardrail, the baffle wheel can be kept in contact with one side of the circular tube handrail on the guardrail by pushing the supporting plate, so that the corresponding limiting aim can be achieved, stable contact transmission can be ensured when the driving wheel is in contact with the circular tube handrail, then the movable frame can be driven to move downwards by rotating the adjusting screw rod, so that the supporting wheel is kept in contact with the road surface of the bridge, stable support of the L-shaped frame can be realized, and then the problem of stress deviation of the L-shaped frame can be prevented when the detection mechanism is arranged and connected with the L-shaped frame, and further, the stable operation of the whole device can be ensured;

according to the invention, after the L-shaped frame is installed, the supporting ring of the supporting tube can be placed on the U-shaped bracket, then the moving ring is released, and the elastic tension of the brake spring is utilized to drive the moving ring to move downwards, so that the clamping rod penetrates through the corresponding clamping hole, the supporting tube is stably limited, the supporting tube is stably connected with the L-shaped frame, and meanwhile, the driving bevel gear and the driven bevel gear can be kept in meshed transmission, so that when the double-shaft motor is started, the power of the double-shaft motor can be respectively transmitted to the plurality of detection mechanisms by utilizing the transmission mechanism, the shooting position of the detection mechanisms can be adjusted, and the bottom surface of the bridge can be scanned;

According to the invention, after the camera shoots a crack at the bottom of the bridge, the electric push rod is started to drive the mounting plate to move upwards, the driving plate can be driven to move upwards at the moment, so that the supporting plate can be lifted upwards under the driving of the two push rods, the marking pen can be moved out of the mounting box until the marking pen contacts with the ground of the bridge, at the moment, the mounting box can mark the ground of the bridge by scribing when sliding transversely along with the L-shaped sliding plate, and the corresponding position can be easily found when the crack is repaired on the bridge later by the scribing method, so that a certain convenience is provided when repairing;

according to the invention, after the support tube is connected with the L-shaped frame, a plurality of detection mechanisms can be arranged below the bridge under the support action of the bottom plate, that is, when the bottom surface of the bridge is detected and shot, the detection is not needed, and the condition of the bottom surface of the bridge can be conveniently observed by an maintainer after the bottom surface of the bridge is detected by utilizing a visual transmission mode of the detection mechanisms, so that the detection device has good safety when the bottom surface of the bridge is detected by cracks;

According to the invention, after the double-shaft motor is operated, the plurality of detection mechanisms can be driven to operate through the transmission mechanism, at the moment, the imaging probe arranged on the plurality of detection mechanisms can transversely reciprocate, so that the imaging probe can transversely reciprocate along the length direction of the bottom plate while transversely moving along with the bottom plate, the covered area in the moving process of the bottom plate can be subjected to scanning detection, and the condition of omission is avoided, and the detection is more thorough.

Drawings

FIG. 1 is a three-dimensional view of a front view structure of a concrete bridge bottom crack detection device provided by an embodiment of the invention;

fig. 2 is a three-dimensional view of the internal structure of a connection box of the concrete bridge bottom crack detection device provided by the embodiment of the invention;

FIG. 3 is a schematic structural view of connection of a connecting shaft, a driving roller, a driving ring and an L-shaped slide plate of the concrete bridge bottom surface crack detection device provided by the embodiment of the invention;

FIG. 4 is a side sectional view of a connecting shaft, a driving roller, a stop block, a driving ring and an L-shaped slide plate connecting structure of the concrete bridge bottom surface crack detection device provided by the embodiment of the invention;

Fig. 5 is a three-dimensional view of a rear view structure of a concrete bridge bottom crack detection device according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a portion A of the apparatus for detecting cracks on a bottom surface of a concrete bridge according to an embodiment of the present invention in FIG. 5;

fig. 7 is a schematic structural diagram of connection of a biaxial motor, a belt, a driving shaft and a driving wheel of the concrete bridge bottom crack detection device according to the embodiment of the invention;

FIG. 8 is a schematic diagram of a portion B of the apparatus for detecting cracks in a bottom surface of a concrete bridge according to an embodiment of the present invention in FIG. 7;

FIG. 9 is a schematic diagram of connection of a screw plate, an adjusting screw, a movable frame, a limiting plate and a supporting wheel of the concrete bridge bottom crack detection device provided by the embodiment of the invention;

fig. 10 is a schematic connection diagram of a marking mechanism of a concrete bridge bottom crack detection device according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a concrete bridge bottom crack detection device according to an embodiment of the present invention installed on a bridge.

Reference numerals:

1. a bottom plate; 2. a connection box; 3. a support tube; 4. an L-shaped frame; 5. a U-shaped bracket; 6. a backing ring; 7. a moving ring; 8. a clamping rod; 9. a clamping plate; 10. a brake spring; 11. a biaxial motor; 12. a driving bevel gear; 13. a rotating shaft; 14. a driven bevel gear; 15. a worm; 16. a connecting shaft; 17. a worm wheel; 18. a driving roller; 19. a drive ring; 20. a mounting rod; 21. a slide box; 22. an L-shaped sliding plate; 23. an imaging probe; 24. a stop block; 25. a fixing frame; 26. a drive shaft; 27. a driving wheel; 28. a catch wheel; 29. a belt pulley; 30. a belt; 31. a support plate; 32. a limit rod; 33. an arc-shaped clamping block; 34. a clamping groove; 35. a compression spring; 36. a thread plate; 37. adjusting a screw; 38. a moving rack; 39. a limiting plate; 40. a support wheel; 41. a mounting box; 42. a mounting plate; 43. a driving plate; 44. a push rod; 45. a supporting plate; 46. a marker pen; 47. a tension spring; 48. an electric push rod.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1: referring to fig. 1 to 6 and 10, a concrete bridge bottom surface crack detection device of this embodiment includes a plurality of detection mechanism, drive mechanism and running gear, a plurality of detection mechanism are all installed at the top of bottom plate 1, be used for carrying out crack detection to the bridge bottom, drive mechanism installs in joint box 2, and one side of drive mechanism extends to the outside of joint box 2 and is connected with the top of bottom plate 1, drive mechanism is connected with a plurality of detection mechanism respectively, be used for synchronous drive to a plurality of detection mechanism, drive mechanism's top runs through stay tube 3 and extends to the top of stay tube 3, drive mechanism is connected with the running gear, positioning mechanism is installed to one side of running gear, be connected with stay tube 3 on the positioning mechanism, and the bottom fixed mounting of stay tube 3 has joint box 2, the bottom fixed mounting of joint box 2 has bottom plate 1.

Referring to fig. 2, the drive mechanism includes rotating shaft 13 rotatably connected on the inner wall of the bottom of connection box 2, the top of rotating shaft 13 runs through support tube 3 and extends to the top of support tube 3, rotating shaft 13 is rotatably connected with the inner wall of support tube 3, the top of rotating shaft 13 is fixedly installed with driven bevel gear 14 through the mode of key connection, and there is driving bevel gear 12 on one output shaft of biax motor 11 through the mode fixed mounting of key connection, driving bevel gear 12 meshes with driven bevel gear 14, one side inner wall of connection box 2 is rotatably connected with connecting shaft 16, and the fixed cover of rotating shaft 13 through the mode of key connection is equipped with worm 15 that is located connection box 2, be equipped with worm wheel 17 through the mode fixed cover of key connection on connecting shaft 16, worm 15 meshes with worm wheel 17, the one end of connecting shaft 16 extends to the outside of connection box 2 and is rotatably connected with the top of bottom plate 1, and connecting shaft 16 is connected with a plurality of detection mechanism respectively, after driving bevel gear 12 and driven bevel gear 14 mesh the transmission, can be with the power transmission that biax motor 11 produced to 13, and when driving bevel gear 12 and driven bevel gear 14 carry out the card, can carry out the high-speed limit and can carry out the card position to the rotation with the rotation of rotation shaft 13 at the rotation of connection box 3, can be guaranteed to the rotation of the support tube, can be carried out the rotation and the rotation can be well-defined in order to carry out the position and can be rotated and the rotation of the support tube through the rotation assembly, can be well-down in order to prevent the rotation of rotation assembly and the rotation assembly from moving down, and can be well-down and the rotation assembly, the position can be 13, and can be rotated by the rotation and the rotation assembly can be well 13.

Referring to fig. 3 and 4, detection mechanism includes the slide case 21 at bottom plate 1 top through welded mode fixed mounting, and slide case 21 sliding connection has L type slide 22, L type slide 22's top extends to slide case 21 top and through bolted connection's mode fixed mounting has camera probe 23, and reciprocating assembly is installed to one side of camera probe 23, reciprocating assembly is connected with connecting axle 16, keep being connected back at reciprocating assembly and connecting axle 16, can carry out the transmission to L type slide 22, so can realize driving camera probe 23 and remove, so that can shoot the detection to the region that the bridge bottom surface is different, and set up multiunit detection mechanism's purpose can promote the running cycle of camera probe 23, thereby can reduce the problem of shooting the dead angle, thereby can more comprehensive bottom surface to the bridge and shoot the detection, reciprocating assembly includes the driving roller 18 of mode fixed sleeve setting on connecting axle 16 through key connection, and driving roller 18 is equipped with the drive ring 19 on, can carry out the transmission ring 24 through fixed mounting to the side inner wall of driving ring 24 of driving ring 19 and the annular groove through the fixed mounting of connecting axle 24, can carry out the fixed connection with the annular groove along with the fixed axis of drive ring groove 20, can carry out the fixed motion along with the fixed axis of drive ring groove 20 in the side of the drive ring 19 along with the welding mode, can carry out the fixed connection with the fixed axis of drive ring groove 20, the fixed connection is along with the side of the drive ring groove 20.

Referring to fig. 10, the marking mechanism includes a mounting box 41 fixedly installed at one side of the L-shaped sliding plate 22, a driving plate 43 is slidably connected in the mounting box 41, a moving hole is opened on an inner wall of one side of the mounting box 41, a mounting plate 42 is fixedly installed at one side of the driving plate 43, one side of the mounting plate 42 penetrates through the sliding hole and extends to the outer side of the mounting box 41, two ejector rods 44 are symmetrically and fixedly installed at the top of the driving plate 43, the two ejector rods 44 are slidably connected with the same supporting plate 45, a marking pen 46 is fixedly installed at the top of the supporting plate 45, the top end of the marking pen 46 extends to the upper side of the mounting box 41, a tension spring 47 positioned above the supporting plate 45 is sleeved on the ejector rods 44, and the top and the bottom of extension spring 47 respectively with the top of ejector pin 44 and the top fixed connection of layer board 45, one side top fixed mounting of mounting box 41 has electric putter 48, electric putter's 48 output shaft and the top fixed connection of mounting panel 42, after the crack of bridge bottom is shot to camera 23, start electric putter 48 and drive mounting panel 42 upward movement this moment, can drive plate 43 upward movement this moment, so can be under the drive of two ejector pins 44, can upwards lift layer board 45, can shift out marker 46 mounting box 41, until marker 46 contacts with the ground of bridge, at this moment mounting box 41 is along with L type slide 22 when transversely sliding, can carry out the marking line mark to the ground of bridge.

Referring to fig. 5 and 6, positioning mechanism includes installing the U type bracket 5 on running gear, and stay tube 3 runs through U type bracket 5, be equipped with the die-cushion ring 6 that is located U type bracket 5 top through welded mode fixed cover on the stay tube 3, the both sides of die-cushion ring 6 all sliding connection have the cardboard 9 through welded mode fixed mounting of clamping lever 8,U type bracket 5, and the card hole has been seted up on the cardboard 9, the bottom of clamping lever 8 runs through corresponding card hole and clamps with the card hole mutually, the same movable ring 7 of fixed mounting is passed through to the top of two clamping levers 8, movable ring 7 slip cover is established on stay tube 3, the cover is equipped with the brake spring 10 that is located between die-cushion ring 6 and the movable ring 7 on the stay tube 3, and the top and the bottom of brake spring 10 are respectively with the bottom of movable ring 7 and the top of die-cushion ring 6 through welded or bolt's mode fixed connection, utilize die-cushion ring 6 to put on U type bracket 5 after, can form the steady holding power to stay tube 3, and when utilizing card lever 8 to pass corresponding card hole, can form and clamp 3 and take place the stable effect and can not take place the stable displacement with U type bracket 5.

Example 2: referring to fig. 5 and fig. 7 to fig. 9, the concrete bridge bottom surface crack detection device according to the first embodiment is further improved with respect to the travelling mechanism, and specifically includes that the L-shaped bracket 4,U is fixedly connected to one side of the L-shaped bracket 4 in a welding manner, the top of the L-shaped bracket 4 is fixedly provided with the double-shaft motor 11 in a bolting manner, one output shaft of the double-shaft motor 11 is connected with the transmission mechanism, the top of the inner side of the L-shaped bracket 4 is provided with the driving component, one side of the driving component extends to one side of the L-shaped bracket 4, the driving component is connected with the other output shaft of the double-shaft motor 11, the bottom of the other side of the L-shaped bracket 4 is provided with the supporting component, the supporting component is used for supporting the L-shaped bracket 4 in a travelling manner, the driving component is driven to operate by starting the double-shaft motor 11, so that the L-shaped bracket 4 can provide power for transverse movement, and after the positioning mechanism is connected with the support tube 3, the L-shaped bracket 4 can drive a plurality of detection mechanisms to perform transverse position adjustment so as to detect different positions of the bridge bottom surface.

Referring to fig. 7, the driving assembly includes a fixing frame 25 fixedly installed at the top of the inner side of the L-shaped frame 4 in a bolt connection manner, a driving shaft 26 is rotatably connected to the fixing frame 25, a driving wheel 27 is fixedly sleeved on the driving shaft 26, one end of the driving shaft 26 extends to one side of the L-shaped frame 4, a belt pulley 29 is fixedly installed on one end of the driving shaft 26 and the other output shaft of the double-shaft motor 11 in a key connection manner, the same belt 30 is sleeved on the driving sleeve of the two belt pulleys 29, a limiting member is installed on the inner wall of one side of the fixing frame 25, one side of the limiting member extends to the outer side of the fixing frame 25, one side of the limiting member is connected with one side of the fixing frame 25, when the driving shaft 26 rotates along with the output shaft of the double-shaft motor 11 through the belt 30, the driving wheel 27 and a circular pipe handrail on a bridge keep stable transmission, so that when the driving wheel 27 rotates, the driving wheel 27 can drive the whole device to move, and the shape of the driving wheel 27 is not limited to dumbbell-shaped handrails as shown in the drawings, and the shape of the driving wheel 27 can also be exchanged when encountering the handrails of different shapes.

Referring to fig. 7 and 8, the limiting member includes a supporting plate 31 penetrating through and slidably connected on an inner wall of one side of a fixing frame 25, and one side of the supporting plate 31 located in the fixing frame 25 is rotatably connected with a catch wheel 28, a plurality of clamping grooves 34 are formed in the top of the supporting plate 31 at equal intervals, a limiting rod 32 is fixedly mounted on one side of the fixing frame 25 in a welding manner, an arc clamping block 33 is slidably sleeved on the limiting rod 32, the arc clamping block 33 is detachably clamped with the plurality of clamping grooves 34, a compression spring 35 located on one side of the arc clamping block 33 is sleeved on the limiting rod 32, two ends of the compression spring 35 are fixedly connected with one end of the limiting rod 32 and one side of the arc clamping block 33 in a welding manner or a bolt connection manner respectively, the catch wheel 28 is driven to be close to a round pipe handrail on a guardrail by pushing the supporting plate 31 until contact occurs, the catch wheel 28 can be utilized to provide supporting force for the L-shaped frame 4, meanwhile, stable braking can be maintained on the supporting plate 31 when the arc clamping block 33 is clamped with the corresponding clamping groove 34 in an inclined manner.

Referring to fig. 9, the support assembly includes a threaded plate 36 fixedly installed at the bottom of the other side of the L-shaped frame 4 by means of welding, and a limiting plate 39 is fixedly installed at one side of the threaded plate 36 by means of welding, a moving frame 38 is connected to the limiting plate 39 in a penetrating and sliding manner, an adjusting screw 37 is connected to the inner wall of the bottom of the moving frame 38 in a rotating manner, threaded holes are formed in the threaded plate 36, the adjusting screw 37 penetrates through the threaded holes and the inner wall of the top of the moving frame 38 and extends to the upper portion of the moving frame 38, the adjusting screw 37 is connected with threaded holes, a supporting wheel 40 is connected to the bottom of the moving frame 38 in a rotating manner, the moving frame 38 can be driven to move downwards by rotating the adjusting screw 37, the supporting wheel 40 can be in contact with the road surface of the bridge by adjusting the height of the supporting wheel 40, stable supporting force can be provided for the L-shaped frame 4, and then the pressure applied to the driving wheel 27 can be shared when the supporting tube 3 is installed.

Working principle: firstly, the driving wheel 27 is put on a round pipe handrail on a guardrail at the side of a bridge, one side provided with the U-shaped bracket 5 is arranged at the outer side of the guardrail, then the supporting plate 31 can be pushed to drive the baffle wheel 28 to move transversely, so that the baffle wheel 28 contacts with the side surface of the round pipe handrail, at the moment, the baffle wheel 28 forms a ninety-degree included angle with the driving wheel 27, the L-shaped frame 4 can be limited, then the arc-shaped clamping block 33 can be released, at the moment, under the action of the elastic potential energy of the compression spring 35, the arc-shaped clamping block 33 can be driven to move, so that the arc-shaped clamping block 33 moves into the corresponding clamping groove 34, thereby limiting the supporting plate 31, braking the baffle wheel 28, and after the supporting tube 3 is arranged on the L-shaped frame 4, the L-shaped frame 4 can be pulled, and then the adjusting screw 37 can be rotated, at the moment, under the action of the thread transmission with the thread plate 36, the adjusting screw 37 can be made to move downwards so as to drive the movable frame 38 to move downwards, when the movable frame 38 moves downwards, the height of the supporting wheel 40 can be reduced until the supporting wheel 40 is tightly contacted with the side edge fence of the bridge, so that the L-shaped frame 4 can be stably supported, the L-shaped frame 4 is prevented from tilting outwards, after the L-shaped frame 4 is installed, the supporting tube 3 can be placed on the U-shaped bracket 5 through the supporting ring 6, the clamping rod 8 corresponds to the clamping hole on the corresponding clamping plate 9, the movable ring 7 can be released, the stressed braking spring 10 can pull the movable ring 7 to move downwards, at the moment, the clamping rod 8 can respectively penetrate through the corresponding clamping holes, the clamping rod 8 and the U-shaped bracket 5 are clamped, the supporting tube 3 can be further positioned, after the installation and the positioning of the supporting tube 3 are completed, the plurality of camera probes 23 can be arranged below the bridge, after the double-shaft motor 11 is started, two output shafts on the double-shaft motor 11 can synchronously run, so that under the transmission cooperation of the two belt pulleys 29 and the belt 30, the driving shaft 26 can be driven to rotate, the driving wheel 27 can be driven to rotate, at the moment, under the transmission action of static friction force between the driving wheel 27 and the round pipe handrail, the L-shaped frame 4 can be moved, so that walking power can be provided when the plurality of detection components are used for transverse position adjustment, the bottom surface of the bridge is conveniently detected, after the double-shaft motor 11 runs, the rotating shaft 13 can be driven to rotate under the meshing transmission action of the driving bevel gear 12 and the driven bevel gear 14, at the moment, under the meshing transmission action of the worm 15 and the worm gear 17, the connecting shaft 16 can be driven to rotate, when the connecting shaft 16 rotates, the plurality of driving rollers 18 can be driven to rotate, when the driving rollers 18 rotate, the driving ring 19 can be driven to reciprocate transversely along the axis direction of the driving rollers 18 under the transmission cooperation effect of the annular grooves and the stop blocks 24, when the driving ring 19 moves, the L-shaped sliding plate 22 can be driven to reciprocate transversely through the mounting rod 20, so that the camera probe 23 can be driven to reciprocate transversely, and the covered area in the moving process of the bottom plate 1 can be scanned for detection, so that the detection of the bottom surface of a bridge is sufficiently careful to avoid missing;

After the camera 23 shoots a crack at the bottom of the bridge, the electric push rod 48 is started to drive the mounting plate 42 to move upwards, the driving plate 43 can be driven to move upwards at the moment, so that the supporting plate 45 can be lifted upwards under the driving of the two ejector rods 44, the marker pen 46 can be moved out of the mounting box 41 until the marker pen 46 contacts with the ground of the bridge, at the moment, the mounting box 41 can mark the ground of the bridge by scribing when sliding transversely along with the L-shaped sliding plate 22, and the corresponding position can be easily found when the crack is repaired on the bridge later by scribing, so that certain convenience is provided when repairing;

the camera probe 23 adopts wireless transmission's mode to be connected with maintainer's cell-phone to this can be with the picture real-time transmission that camera probe 23 took to the cell-phone on, make things convenient for maintainer to watch, and this detection device is when using, single detection can only realize detecting the half region of bridge, the purpose of this kind of mode of detection can reduce the length of bottom plate 1, when this device dismantles the transportation, can reduce the volume, in order to conveniently transport, moreover can reduce the mass volume of bottom plate 1, when being connected with junction box 2, prevent that bottom plate 1 from taking place the condition of downwarping, thereby can guarantee that a plurality of camera probes 23 take with the ascending mode of level.

The present invention is not limited to the above embodiments, and any person skilled in the art can easily think about the changes or substitutions within the technical scope of the present invention, and the changes or substitutions are intended to be covered by the scope of the present invention; embodiments of the invention and features of the embodiments may be combined with each other without conflict. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. The utility model provides a concrete bridge bottom surface crack detection device which characterized in that includes:

the walking mechanism is provided with a positioning mechanism at one side, the positioning mechanism is connected with a supporting pipe (3), the bottom end of the supporting pipe (3) is fixedly provided with a connecting box (2), and the bottom of the connecting box (2) is fixedly provided with a bottom plate (1);

the detection mechanisms are arranged at the top of the bottom plate (1) and used for detecting cracks at the bottom of the bridge, and the detection mechanisms are connected with marking mechanisms and used for marking the cracks;

the transmission mechanism is arranged in the connecting box (2), one side of the transmission mechanism extends to the outer side of the connecting box (2) and is connected with the top of the bottom plate (1), the transmission mechanism is respectively connected with the detection mechanisms and is used for synchronously driving the detection mechanisms, the top end of the transmission mechanism penetrates through the supporting tube (3) and extends to the upper side of the supporting tube (3), and the transmission mechanism is connected with the travelling mechanism.

2. The concrete bridge bottom surface crack detection device according to claim 1, wherein the travelling mechanism comprises an L-shaped frame (4), the positioning mechanism is connected with one side of the L-shaped frame (4), the top of the L-shaped frame (4) is fixedly provided with a double-shaft motor (11), one output shaft of the double-shaft motor (11) is connected with the transmission mechanism, the inner top of the L-shaped frame (4) is provided with a driving component, one side of the driving component extends to one side of the L-shaped frame (4), the driving component is connected with the other output shaft of the double-shaft motor (11), the bottom of the other side of the L-shaped frame (4) is provided with a supporting component, and the supporting component is used for carrying out travelling support on the L-shaped frame (4).

3. The concrete bridge bottom surface crack detection device according to claim 2, characterized in that the driving assembly comprises a fixing frame (25) fixedly installed at the inner side top of the L-shaped frame (4), a driving shaft (26) is rotationally connected to the fixing frame (25), a driving wheel (27) is fixedly sleeved on the driving shaft (26), one end of the driving shaft (26) extends to one side of the L-shaped frame (4), belt pulleys (29) are fixedly installed on one end of the driving shaft (26) and the other output shaft of the double-shaft motor (11), the same belt (30) is sleeved on the two belt pulleys (29) in a transmission mode, a limiting member is installed on the inner wall of one side of the fixing frame (25), one side of the limiting member extends to the outer side of the fixing frame (25), and one side of the limiting member is connected with one side of the fixing frame (25).

4. The concrete bridge bottom surface crack detection device according to claim 3, wherein the limiting member comprises a supporting plate (31) penetrating through the inner wall of one side of the fixing frame (25), one side of the supporting plate (31) located in the fixing frame (25) is rotationally connected with a baffle wheel (28), a plurality of clamping grooves (34) are formed in the top of the supporting plate (31) at equal intervals, a limiting rod (32) is fixedly arranged on one side of the fixing frame (25), an arc-shaped clamping block (33) is sleeved on the limiting rod (32) in a sliding mode, the arc-shaped clamping block (33) is detachably clamped with the clamping grooves (34), a compression spring (35) located on one side of the arc-shaped clamping block (33) is sleeved on the limiting rod (32), and two ends of the compression spring (35) are fixedly connected with one end of the limiting rod (32) and one side of the arc-shaped clamping block (33) respectively.

5. The concrete bridge bottom surface crack detection device according to claim 2, wherein the supporting component comprises a thread plate (36) fixedly installed at the bottom of the other side of the L-shaped frame (4), a limiting plate (39) is fixedly installed on one side of the thread plate (36), a movable frame (38) is connected to the limiting plate (39) in a penetrating sliding manner, an adjusting screw (37) is connected to the inner wall of the bottom of the movable frame (38) in a rotating manner, a threaded hole is formed in the thread plate (36), the adjusting screw (37) penetrates through the threaded hole and the inner wall of the top of the movable frame (38) respectively and extends to the upper portion of the movable frame (38), the adjusting screw (37) is connected with the threaded hole in a threaded manner, and a supporting wheel (40) is connected to the bottom of the movable frame (38) in a rotating manner.

6. The concrete bridge bottom surface crack detection device according to claim 1, wherein the positioning mechanism comprises a U-shaped bracket (5) fixedly installed on one side of an L-shaped frame (4), the supporting tube (3) penetrates through the U-shaped bracket (5), a supporting ring (6) positioned above the U-shaped bracket (5) is fixedly sleeved on the supporting tube (3), clamping rods (8) are slidably connected to two sides of the supporting ring (6), clamping plates (9) are fixedly installed on two sides of the U-shaped bracket (5), clamping holes are formed in the clamping plates (9), and the bottom ends of the clamping rods (8) penetrate through corresponding clamping holes and are clamped with the clamping holes;

the top ends of the two clamping rods (8) are fixedly provided with the same movable ring (7), the movable ring (7) is slidably sleeved on the supporting tube (3), a brake spring (10) positioned between the supporting ring (6) and the movable ring (7) is sleeved on the supporting tube (3), and the top ends and the bottom ends of the brake spring (10) are fixedly connected with the bottom of the movable ring (7) and the top of the supporting ring (6) respectively.

7. The concrete bridge bottom surface crack detection device according to claim 1, wherein the transmission mechanism comprises a rotating shaft (13) rotatably connected to the inner wall of the bottom of the connecting box (2), the top end of the rotating shaft (13) penetrates through the supporting tube (3) and extends to the upper side of the supporting tube (3), the rotating shaft (13) is rotatably connected with the inner wall of the supporting tube (3), the top end of the rotating shaft (13) is fixedly provided with a driven bevel gear (14), one output shaft of the double-shaft motor (11) is fixedly provided with a driving bevel gear (12), the driving bevel gear (12) is meshed with the driven bevel gear (14), one side inner wall of the connecting box (2) is rotatably connected with a connecting shaft (16), a worm (15) positioned in the connecting box (2) is fixedly sleeved on the rotating shaft (13), the worm (15) is meshed with the worm wheel (17), one end of the connecting shaft (16) extends to the outer side of the connecting box (2) and is rotatably connected with the top of the bottom plate (1), and the connecting shaft (16) is respectively connected with the detection mechanisms.

8. The concrete bridge bottom surface crack detection device according to claim 1 or 7, wherein the detection mechanism comprises a slide box (21) fixedly installed at the top of the bottom plate (1), an L-shaped slide plate (22) is connected in a sliding manner in the slide box (21), the top of the L-shaped slide plate (22) extends to the upper side of the slide box (21) and is fixedly provided with a camera probe (23), one side of the camera probe (23) is provided with a reciprocating assembly, and the reciprocating assembly is connected with the connecting shaft (16);

the reciprocating assembly comprises a driving roller (18) fixedly sleeved on a connecting shaft (16), a spiral annular groove is formed in the driving roller (18), a driving ring (19) is sleeved on the driving roller (18), a stop block (24) is fixedly installed on the inner wall of the side face of the driving ring (19), one side of the stop block (24) extends into the annular groove and is in transmission fit with the inner wall of the annular groove, a mounting rod (20) is fixedly installed on one side of the driving ring (19), and one end of the mounting rod (20) is fixedly connected with one side of the L-shaped sliding plate (22).

9. The concrete bridge bottom surface crack detection device according to claim 1, wherein the marking mechanism comprises a mounting box (41) fixedly mounted on one side of the L-shaped sliding plate (22), a driving plate (43) is connected in the mounting box (41), a moving hole is formed in the inner wall of one side of the mounting box (41), a mounting plate (42) is fixedly mounted on one side of the driving plate (43), one side of the mounting plate (42) penetrates through the sliding hole and extends to the outer side of the mounting box (41), two ejector rods (44) are symmetrically and fixedly mounted on the top of the driving plate (43), the two ejector rods (44) are connected with the same supporting plate (45) in a sliding manner, a marking pen (46) is fixedly mounted on the top of the supporting plate (45), the top end of the marking pen (46) extends to the upper side of the mounting box (41), a tension spring (47) is sleeved on the ejector rod (44), the top end and the bottom end of the tension spring (47) are fixedly connected with the top end of the ejector rod (44) and the top of the supporting plate (45) respectively, one side of the mounting box (41) is fixedly mounted with two ejector rods (44), and the top of the electric push rod (48) is fixedly connected with the top of the mounting plate (48).

10. The method of using a concrete bridge floor crack detection device as claimed in any one of claims 1-9, comprising the steps of:

s1, a worker puts a driving wheel (27) on a circular tube handrail on a guardrail at the side of a bridge, and sets one side provided with a U-shaped bracket (5) at the outer side of the guardrail, and then pushes a supporting plate (31) to drive a baffle wheel (28) to move transversely, so that the baffle wheel (28) is contacted with the side surface of the circular tube handrail, and at the moment, a ninety-degree included angle formed by the baffle wheel (28) and the driving wheel (27) plays a limiting role on an L-shaped frame (4);

s2, then releasing the arc-shaped clamping blocks (33), at the moment, under the action of elastic potential energy of the compression springs (35), driving the arc-shaped clamping blocks (33) to move, enabling the arc-shaped clamping blocks (33) to move into corresponding clamping grooves (34), limiting the supporting plates (31), braking the baffle wheels (28), after the supporting tubes (3) are installed on the L-shaped frames (4), pulling the L-shaped frames (4), rotating the adjusting screw rods (37), at the moment, enabling the adjusting screw rods (37) to move downwards under the action of screw transmission with the screw plates (36), driving the moving frames (38) to move downwards, and when the moving frames (38) move downwards, adjusting the heights of the supporting wheels (40) until the supporting wheels (40) are closely contacted with side edge surrounding blocks of bridges, so that the L-shaped frames (4) are stably supported, and the L-shaped frames (4) are prevented from inclining outwards;

S3, after the L-shaped frame (4) is installed, the supporting tube (3) is placed on the U-shaped bracket (6) through the supporting ring (6), the clamping rod (8) corresponds to the clamping hole on the corresponding clamping plate (9), then the moving ring (7) is released, the stressed braking spring (10) pulls the moving ring (7) to move downwards, at the moment, the clamping rod (8) penetrates through the corresponding clamping hole respectively, the clamping rod (8) and the U-shaped bracket (5) are clamped, and the supporting tube (3) is further positioned;

s4, after the supporting tube (3) is installed and positioned, a plurality of camera probes (23) are arranged below a bridge, after the double-shaft motor (11) is started, two output shafts on the double-shaft motor (11) synchronously run, so that under the transmission cooperation of two belt pulleys (29) and a belt (30), the driving shaft (26) is driven to rotate, the driving wheel (27) is driven to rotate, at the moment, under the transmission effect of static friction force between the driving wheel (27) and a circular tube handrail, the L-shaped frame (4) is enabled to move, and therefore walking power is provided when a plurality of detection assemblies are used for transverse position adjustment, and the bottom surface of the bridge is conveniently detected;

S5, after the double-shaft motor (11) runs, under the meshing transmission action of the driving bevel gear (12) and the driven bevel gear (14), the rotating shaft (13) is driven to rotate, at the moment, under the meshing transmission action of the worm (15) and the worm wheel (17), the connecting shaft (16) is driven to rotate, when the connecting shaft (16) rotates, the plurality of driving rollers (18) are driven to rotate, when the driving rollers (18) rotate, under the transmission cooperation action of the annular groove and the stop block (24), the driving ring (19) is driven to transversely reciprocate along the axis direction of the driving rollers (18), and when the driving ring (19) moves, the L-shaped sliding plate (22) is driven to transversely reciprocate through the mounting rod (20), so that the imaging probe (23) is driven to transversely reciprocate, and the scanning type detection is carried out on the area covered by the bottom plate (1) in the moving process;

s6, after a crack at the bottom of the bridge is shot by the camera (23), an electric push rod (48) is started to drive the mounting plate (42) to move upwards, and the driving plate (43) can be driven to move upwards, so that the supporting plate (45) can be lifted upwards under the driving of the two ejector rods (44), namely the marker pen (46) can be moved out of the mounting box (41) until the marker pen (46) is contacted with the ground of the bridge, and the mounting box (41) can mark the ground of the bridge by scribing when the L-shaped sliding plate (22) slides transversely;

S7, the camera probe (23) is connected with a mobile phone of a maintainer in a wireless transmission mode, so that pictures shot by the camera probe (23) can be transmitted to the mobile phone in real time, and the maintainer can conveniently watch the pictures.