Detection and maintenance device capable of preventing safety accidents for roads and bridges

Abstract

The invention discloses a detection and maintenance device capable of preventing safety accidents for roads and bridges, and particularly relates to the technical field of bridge detection and maintenance, the detection and maintenance device comprises a mobile carrier loader, a control room is arranged in the middle of the upper end of the mobile carrier loader, and a rotary lifting platform is arranged on the rear side of the control room at the upper end of the mobile carrier loader; a detection arm control section is arranged at the upper end of the rotary lifting platform, a detection arm moving section is arranged on the side, away from the rotary lifting platform, of the detection arm control section, a detection arm tail section is arranged at the end, away from the detection arm control section, of the detection arm moving section, and a detection maintenance mechanism is arranged at the end, away from the detection arm joint, of the detection arm tail section. According to the detection and maintenance device capable of preventing the safety accidents for the roads and the bridges, steering of the detection arms is controlled through the transmission relation among the multiple sets of gears, the steel wire ropes and the winding reels, the purpose that the device can work on the bridge floor or the bridge bottom is achieved, and the functionality of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of bridge inspection and maintenance technology, and in particular to an inspection and maintenance device for road bridges that can prevent safety accidents. Background Technology

[0002] With the rapid development of my country's economy in recent years, the volume of transportation has been increasing, and the traffic density and vehicle load on roads and bridges are also getting bigger and bigger. This makes regular bridge inspections increasingly important in the daily maintenance of bridges. Regular bridge inspections can check the health status of bridges, thereby discovering or controlling the development of defects in a timely manner and effectively preventing safety accidents.

[0003] Chinese patent document CN108611993B discloses a modular bridge concrete crack injection machine, including a crack positioning component, a crack cleaning component, a crack sealing component, a first crack injection component, and a second crack injection component. The crack positioning component can translate and rotate on the I-beam and serves as a platform for carrying other components. When the crack cleaning component is installed on the crack positioning component, the crack surface is cleaned. When the crack sealing component is installed on the crack positioning component, the sealing adhesive is applied to the crack surface. When the first crack injection component is installed on the crack positioning component, the injection nozzle is embedded in the crack and adheres to the sealing adhesive. When the second crack injection component is installed on the crack positioning component, the injector is embedded in the injection nozzle. The injector automatically injects the sealing adhesive into the crack through the central hole of the injection nozzle. This invention reduces the dependence on manual labor for crack injection and provides stable injection quality. However, in actual use, this device can only work on the bridge deck and cannot be used for maintenance injection of cracks under the bridge.

[0004] Therefore, in view of the above problems, there is a need to provide a detection and maintenance device that can perform maintenance and sealant injection on cracks at the bottom of bridges. Summary of the Invention

[0005] The main objective of this invention is to provide a detection and maintenance device for roads and bridges that can prevent safety accidents, which can effectively solve the problem that existing detection and maintenance devices cannot inject sealant into cracks at the bottom of bridges.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A road and bridge inspection and maintenance device for preventing safety accidents includes a mobile transport vehicle. A control room is located at the middle of the upper part of the mobile transport vehicle. A rotating lifting platform is located behind the upper part of the control room. A detection arm control section is located at the upper end of the rotating lifting platform. A detection arm moving section is located on the side of the detection arm control section away from the rotating lifting platform. The detection arm moving section is composed of multiple detection arm joints. A detection arm tail section is located at the end of the detection arm moving section away from the detection arm control section. An inspection and maintenance mechanism is located at the end of the detection arm tail section away from the detection arm joints.

[0008] The probe arm control section includes a bidirectional synchronous motor, which is fixedly installed on the upper end of the rotating lifting platform. The two output ends of the bidirectional synchronous motor share a rotating block. A rectangular slot is provided on the side of the rotating block closest to the bidirectional synchronous motor. A limiting mechanism and a first steering mechanism are provided in the rectangular slot. The limiting mechanism is located above the first steering mechanism. A steering control motor is provided on one side of the first steering mechanism. A second steering mechanism is provided on the lower part of the rotating block away from the bidirectional synchronous motor, corresponding to the position of the first steering mechanism.

[0009] Preferably, the limiting mechanism includes a first rotating shaft, the two ends of which are rotatably connected to the inner wall of the rectangular groove, and two left-right symmetrical first winding drums are fixedly installed on the outer wall of the first rotating shaft, with a control gear provided between the two first winding drums.

[0010] The first steering mechanism includes a second rotating shaft. One end of the second rotating shaft is fixedly connected to the output end of the steering control motor. The end of the second rotating shaft away from the steering control motor is rotatably connected to the inner wall of the rectangular groove. Two left-right symmetrical second winding drums are fixedly installed on the outer wall of the second rotating shaft. A drive gear is provided between the two second winding drums. The control gear meshes with the drive gear.

[0011] Preferably, the second steering mechanism includes two symmetrical first winding frames, a first driven gear is provided between the two first winding frames, and a first guide roller is provided on the upper side of each of the two first winding frames, the first guide rollers corresponding to the positions of the two first winding drums.

[0012] Preferably, a second wire rope is wound together between the second wire rope and the second winding drum on the same side.

[0013] Preferably, the probe arm joint includes a first rectangular plate, and a third steering mechanism is provided at each end of the first rectangular plate corresponding to the position of the second steering mechanism. The third steering mechanism consists of two second winding frames and a second driven gear. The second driven gear is located between the two second winding frames. A third steel wire rope is wound together between the second winding frames at both ends of the first rectangular plate. A second guide roller corresponding to the position of the first guide roller is provided on the upper side of each of the two second winding frames.

[0014] Preferably, the end section of the probe arm includes a second rectangular plate, and an electrically operated telescopic rod is provided at the end of the second rectangular plate away from the probe arm joint. The end of the electrically operated telescopic rod away from the second rectangular plate is fixedly connected to the detection and maintenance mechanism.

[0015] Preferably, the second rectangular plate is provided with a third driven gear at one end near the probe arm joint. The third driven gear meshes with the second driven gear in the adjacent probe arm joint. The first driven gear meshes with the second driven gear in the adjacent probe arm joint. The adjacent second driven gears in the multiple adjacent probe arm joints located in the middle mesh with each other.

[0016] Two first steel wire ropes are provided between the end face of the second rectangular plate near the joint of the probe arm and the two first winding drums. The two first steel wire ropes pass through the rotating block and multiple first rectangular plates in sequence, and the first steel wire ropes also pass through the first guide roller and multiple second guide rollers in sequence.

[0017] Preferably, the testing and maintenance mechanism includes a maintenance platform, a drive motor is fixedly installed at the upper center of the maintenance platform, a limiting ring is provided at the upper end of the drive motor, a connecting rod is fixedly connected to both sides of the limiting ring, a square frame is provided between the upper parts of the two connecting rods, a rotating rod that runs through the middle of the square frame is provided, a bending block is provided at the output end of the drive motor, a conveying pipe is provided on the side away from the output end of the drive motor, and the rotating rod passes through the middle of the conveying pipe.

[0018] Preferably, a glue pump is provided on one side of the drive motor, a glue delivery pipe is provided between the glue pump and the delivery pipe, a glue gun is provided at the end of the delivery pipe away from the bending block, and a detection camera is provided on the upper side of the outer wall of the delivery pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When this detection and maintenance device is in operation, the direction of the detection arm is controlled by the transmission relationship between multiple sets of gears, wire ropes and winding drums. At the same time, the reverse rotation of the control gears will release the first wire rope. The rotation of the mechanical arm provides a reaction force, which can act as a fulcrum to adaptively constrain the positional relationship between the various segments of the detection arm, maintain the stability of the device, and achieve the purpose of allowing the device to work on the bridge deck or under the bridge, thus improving the functionality of the device.

[0021] 2. This inspection and maintenance device uses a robotic arm to replace manual labor in inspecting and maintaining cracks in the bridge underside, eliminating the risk of accidents and improving safety.

[0022] 3. When this inspection and maintenance device is in operation, the staff starts the drive motor to rotate the bending block, which causes the bending block to rotate with the conveying pipe between the two connecting rods at an angle. This allows the detection camera to rotate at different angles to detect cracks in the bridge, making it easier for staff to observe and discover cracks in the bridge from multiple angles and to carry out maintenance, thus improving the efficiency of bridge inspection and maintenance. Attached Figure Description

[0023] Figure 1 This refers to the overall working state of the present invention. Figure 1 ;

[0024] Figure 2 This refers to the overall working state of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the probe arm control section of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the connection between the probe arm control section and the probe arm joint of the present invention;

[0028] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A;

[0029] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point B;

[0030] Figure 8 This is a schematic diagram of the probe arm joint of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the end section of the probe arm of the present invention;

[0032] Figure 10This is a schematic diagram of the detection and maintenance mechanism of the present invention.

[0033] In the diagram: 1. Mobile transport vehicle; 2. Control room; 3. Detector arm control section; 4. Detector arm joint; 5. Detector arm end section; 6. Inspection and maintenance mechanism; 7. Rotary lifting platform; 31. Bidirectional synchronous motor; 32. Rotating block; 33. Steering control motor; 34. First wire rope; 35. Limiting mechanism; 351. First rotating shaft; 352. First winding drum; 353. Control gear; 36. First steering mechanism; 361. Second rotating shaft; 362. Second winding drum; 363. Drive gear; 37. Second wire rope; 38. Second steering mechanism; 381. First winding drum. Frame; 382, ​​First driven gear; 39, First guide roller; 41, First rectangular plate; 42, Second guide roller; 43, Third steering mechanism; 431, Second winding frame; 432, Second driven gear; 44, Third wire rope; 51, Second rectangular plate; 52, Electric telescopic rod; 53, Third driven gear; 61, Maintenance platform; 62, Drive motor; 63, Glue pump; 631, Glue delivery pipe; 64, Limiting ring; 641, Connecting rod; 65, Bending block; 66, Square frame; 67, Rotating rod; 68, Delivery pipe; 69, Glue gun; 610, Detection camera. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] Example 1

[0036] like Figure 1-3As shown, this embodiment discloses a road and bridge inspection and maintenance device capable of preventing safety accidents, including a mobile transport vehicle 1. The mobile transport vehicle 1 can travel and move on the bridge to facilitate the inspection and maintenance mechanism 6 to inspect and maintain bridge cracks at different locations. A control room 2 is located in the middle of the upper end of the mobile transport vehicle 1. The control room 2 is equipped with a display device connected to the signal of the detection camera 610, and multiple controllers for controlling the operation of this device. Users can manually confirm the inspection results in the control room 2 and remotely control the inspection and maintenance mechanism 6 to maintain the bridge cracks. A rotating lifting platform 7 is located at the rear of the upper control room 2 of the mobile transport vehicle 1. The rotating lifting platform 7 can be used to rotate and raise the detection arm control section 3. The position of the detection arm control section 3 can be changed to adapt to bridges of different thicknesses. The upper end of the rotating lifting platform 7 is provided with the detection arm control section 3. On the side of the detection arm control section 3 away from the rotating lifting platform 7, there is a detection arm moving section. The detection arm moving section is composed of multiple detection arm joints 4. The end of the detection arm moving section away from the detection arm control section 3 is provided with the detection arm tail section 5. The detection arm control section 3, the detection arm joints 4, and the detection arm tail section 5 together form a detection robotic arm that can change its angle to adapt to different specifications of bridge structures encountered when inspecting and repairing bridges. The end of the detection arm tail section 5 away from the detection arm joints 4 is provided with an inspection and maintenance mechanism 6. The inspection and maintenance mechanism 6 is used to inspect the bridge and repair cracks.

[0037] Specifically, such as Figure 4-5 As shown, the detection arm control section 3 includes a bidirectional synchronous motor 31, which is fixedly installed on the upper end of the rotary lifting platform 7. The two output ends of the bidirectional synchronous motor 31 are fixedly connected to a rotating block 32. When the bidirectional synchronous motor 31 is working, the entire rotating block 32 can be folded to adjust the angle position of the detection robotic arm. A rectangular slot is provided on the side of the rotating block 32 near the bidirectional synchronous motor 31. A limiting mechanism 35 and a first steering mechanism 36 are provided in the rectangular slot. The limiting mechanism 35 is located on the upper side of the first steering mechanism 36. A steering control motor 33 is provided on one side of the first steering mechanism 36. The steering control motor 33 is used to control the operation of the limiting mechanism 35 and the first steering mechanism 36. A second steering mechanism 38 is provided on the lower part of the rotating block 32 away from the bidirectional synchronous motor 31, corresponding to the position of the first steering mechanism 36.

[0038] Furthermore, such as Figure 6As shown, the first steering mechanism 36 includes a second rotating shaft 361. One end of the second rotating shaft 361 is fixedly connected to the output end of the steering control motor 33, and the end of the second rotating shaft 361 away from the steering control motor 33 is rotatably connected to the inner wall of the rectangular groove. Two symmetrically arranged second winding drums 362 are fixedly installed on the outer wall of the second rotating shaft 361. A drive gear 363 is provided between the two second winding drums 362. The connection between the drive gear 363 and the second rotating shaft 361 is a fixed connection. Therefore, when the steering control motor 33 works, it will drive the drive gear 363 to rotate through the second rotating shaft 361. Simultaneously, the limit... Positioning mechanism 35 includes a first rotating shaft 351. Both ends of the first rotating shaft 351 are rotatably connected to the inner wall of a rectangular groove. Two left-right symmetrical first winding drums 352 are fixedly installed on the outer wall of the first rotating shaft 351. A control gear 353 is provided between the two first winding drums 352. The control gear 353 and the first rotating shaft 351 are fixedly connected. The control gear 353 meshes with the drive gear 363. Therefore, when the steering control motor 33 works, it will drive the control gear 353 to rotate in the opposite direction through the drive gear 363, and make the first rotating shaft 351 and the two first winding drums 352 rotate together.

[0039] In order to control the synchronous rotation of multiple probe arm joints 4 when the steering control motor 33 is working, such as Figure 6-7 As shown, the second steering mechanism 38 includes two symmetrical first winding frames 381 on the left and right. A first driven gear 382 is provided between the two first winding frames 381. The two first winding frames 381 and the first driven gear 382 are coaxial. A first guide roller 39 is provided on the upper side of each of the two first winding frames 381. The first guide roller 39 is used to guide the first wire rope 34. The first guide roller 39 corresponds to the position of the two first winding drums 352. The second wire rope 37 located on the same side is wound together with the second winding drum 362. Therefore, when the steering control motor 33 works and drives the second rotating shaft 361 to rotate, it will rotate the two second winding drums 362. The two second winding drums 362 pull or release the second wire rope 37, which will drive the shaft between the first winding frames 381 to rotate at the same time, thereby causing the first driven gear 382 to rotate.

[0040] Furthermore, such as Figure 7-8As shown, the probe arm joint 4 includes a first rectangular plate 41. At both ends of the first rectangular plate 41, corresponding to the positions of the second steering mechanism 38, a third steering mechanism 43 is provided. The specific working principle of the third steering mechanism 43 is similar to that of the second steering mechanism 38. The third steering mechanism 43 consists of two second winding frames 431 and a second driven gear 432. The second driven gear 432 is located between the two second winding frames 431, and the two second winding frames 431 are coaxial with the second driven gear 432. The second winding frames 431 at both ends of the first rectangular plate 41 are... A third steel wire rope 44 is wound around each of the first wire ropes 31. When the second driven gear 432 on one side rotates, it pulls the third steel wire rope 44 by rotating the two second winding frames 431 on the same side. The third steel wire rope 44 then pulls the second driven gear 432 on the other side, causing its corresponding second winding frame 431 to rotate. Each of the two second winding frames 431 has a second guide roller 42 on its upper side, corresponding to the position of the first guide roller 39. The second guide roller 42 is used to guide the first steel wire rope 34, which will be explained in detail later.

[0041] To constrain the connection relationship between the probe arm control section 3, multiple probe arm joints 4, and the probe arm end section 5, such as Figure 9 As shown, the end section 5 of the detection arm includes a second rectangular plate 51. An electric telescopic rod 52 is provided at the end of the second rectangular plate 51 away from the joint 4 of the detection arm. The electric telescopic rod 52 is existing technology. The controller of the electric telescopic rod 52 is located inside the second rectangular plate 51. The maximum length of the electric telescopic rod 52 is greater than the width of the bridge body. The end of the electric telescopic rod 52 away from the second rectangular plate 51 is fixedly connected to the detection and maintenance mechanism 6.

[0042] Furthermore, such as Figure 7 and 9 As shown, a third driven gear 53 is provided at one end of the second rectangular plate 51 near the probe arm joint 4. The connection between the third driven gear 53 and the second rectangular plate 51 is a fixed connection. The third driven gear 53 meshes with the second driven gear 432 in the adjacent probe arm joint 4. The first driven gear 382 meshes with the second driven gear 432 in the adjacent probe arm joint 4. The adjacent second driven gears 432 in the multiple adjacent probe arm joints 4 in the middle mesh with each other. Therefore, when the first driven gear 382 rotates, it will drive the second driven gear 432 meshing with it to rotate. The second driven gears 432 between the multiple probe arm joints 4 will rotate simultaneously through the transmission of the third steel wire rope 44, and drive the third driven gear 53 to rotate at the very end, so that the device can bend to a certain extent according to the number of rotations of the steering control motor 33.

[0043] Furthermore, such as Figure 1-9As shown, two first steel wire ropes 34 are provided between the end face of the second rectangular plate 51 near the joint 4 of the detection arm and the two first winding drums 352. The first steel wire ropes 34 are fixedly connected to the second rectangular plate 51, and the first steel wire ropes 34 are wound around the surface of the corresponding first winding drums 352. When the first rotating shaft 351 rotates, the two first winding drums 352 release the first steel wire ropes 34 to accommodate the bending of the mechanical arm composed of the detection arm control section 3, multiple detection arm joints 4, and detection arm end section 5, and to constrain the above components. The two first steel wire ropes 34 pass through the rotating block 32 and multiple first rectangular plates 41 in sequence, and the first steel wire ropes 34 also pass through the first guide roller 39 and multiple second guide rollers 42 in sequence. The first guide roller 39 and multiple second guide rollers 42 are used to guide the first steel wire ropes 34 to prevent them from rubbing against the first rectangular plate 41 or the bidirectional synchronous motor 31 and affecting the service life of the device.

[0044] Therefore, the specific implementation method of this embodiment is as follows: During operation, the approximate position of the robotic arm is first adjusted by the mobile transport vehicle 1, the rotating lifting platform 7, and the bidirectional synchronous motor 31, and the steering control motor 33 is started. When the steering control motor 33 drives the second rotating shaft 361 to rotate, it will rotate the two second winding drums 362 and the drive gear 363. The two second winding drums 362 pull the second steel wire rope 37, which will drive the shaft between the first winding frame 381 to rotate simultaneously, thereby causing the first driven gear 382 to rotate. The first driven gear 382 will rotate the second driven gear 432 meshing with it, and the second driven gear 432 between the multiple probe arm joints 4 will... The first wire rope 34 rotates simultaneously through the transmission of the third wire rope 44, and drives the third driven gear 53 to rotate at the very end. At the same time, the drive gear 363 drives the control gear 353 to rotate in the opposite direction and release the first wire rope 34, providing a reaction force for the rotation between the gears. This allows the mechanical arm, which acts as a fulcrum, to adaptively constrain the bending position of the mechanical arm composed of the detection arm control section 3, multiple detection arm joints 4, and the detection arm end section 5, thus maintaining the stability of the device. The device can also reverse the start of the steering control motor 33 to allow the detection and maintenance mechanism 6 to work on the bridge deck. When the device needs to pass under the bridge pier, the reverse start of the steering control motor 33 can be used to retract the mechanical arm.

[0045] Example 2

[0046] This embodiment further improves the detection and maintenance mechanism 6 based on the first embodiment, so that the positions of the glue gun 69 and the detection camera 610 can be adjusted at multiple angles when detecting cracks under the bridge.

[0047] Specifically, such as Figure 9-10As shown, the inspection and maintenance mechanism 6 includes a maintenance platform 61, which is fixedly installed at the end of the electric telescopic rod 52 away from the second rectangular plate 51 and can move with the extension and retraction of the second rectangular plate 51. A drive motor 62 is fixedly installed at the upper middle part of the maintenance platform 61. A limiting ring 64 is provided at the upper end of the drive motor 62. The connection between the limiting ring 64 and the drive motor 62 is a fixed connection. A connecting rod 641 is fixedly connected to both sides of the limiting ring 64. A square frame 66 is provided between the upper parts of the two connecting rods 641. The square frame 66 is rotatably connected to the two connecting rods 641. A rotating rod 67 runs through the middle of the square frame 66. A bending block 65 is provided at the output end of the drive motor 62. The bending block 65 is fixedly connected to the output end of the drive motor 62. A conveying pipe 68 is provided on the side away from the output end of the drive motor 62. The rotating rod 67 passes through the middle of the conveying pipe 68, and the rotating rod 67 is rotatably connected to the conveying pipe 68. Therefore, when the drive motor 62 is working, it will rotate the bending block 65, causing the bending block 65 to rotate with the conveying pipe 68 between the two connecting rods 641 at an angle, rotating the glue gun 69 and the detection camera 610 at different angles to detect cracks in the bridge.

[0048] Furthermore, such as Figure 10 As shown, a glue pump 63 is provided on one side of the drive motor 62. The glue pump 63 is filled with gap filler. A glue delivery pipe 631 is provided between the glue pump 63 and the delivery pipe 68. The glue pump 63 is connected to the interior of the delivery pipe 68 through the glue delivery pipe 631. A glue gun 69 is provided at the end of the delivery pipe 68 away from the bending block 65. When the glue pump 63 is working, it delivers gap filler into the delivery pipe 68 through the glue delivery pipe 631 and outputs it from the glue gun 69 to be applied to the cracks in the bridge. A detection camera 610 is provided on the upper side of the outer wall of the delivery pipe 68. The detection camera 610 is connected to the display device in the control room 2 to allow the staff to confirm the degree of cracks and fill the gaps with glue using the glue gun 69.

[0049] Therefore, the specific implementation method of this embodiment is as follows: During operation, after the second rectangular plate 51 is adjusted to the correct position, during the extension of the electric telescopic rod 52, the operator can start the drive motor 62 to rotate the bending block 65, so that the bending block 65, along with the delivery pipe 68, rotates at an angle between the two connecting rods 641, causing the detection camera 610 to rotate at different angles to detect cracks in the bridge. After the operator finds a crack, the glue pump 63 operates to deliver the glue into the delivery pipe 68 through the glue delivery pipe 631 and outputs it from the glue gun 69, applying it to the cracks in the bridge.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A road and bridge inspection and maintenance device capable of preventing safety accidents, comprising a mobile transport vehicle (1), characterized in that: The mobile transport vehicle (1) has a control room (2) at the middle of its upper end. A rotating lifting platform (7) is provided at the rear of the upper control room (2) of the mobile transport vehicle (1). A detection arm control section (3) is provided at the upper end of the rotating lifting platform (7). A detection arm moving section is provided on the side of the detection arm control section (3) away from the rotating lifting platform (7). The detection arm moving section is composed of multiple detection arm joints (4). A detection arm end section (5) is provided at the end of the detection arm moving section away from the detection arm control section (3). A detection and maintenance mechanism (6) is provided at the end of the detection arm end section (5) away from the detection arm joint (4). The probe arm control section (3) includes a bidirectional synchronous motor (31), which is fixedly installed on the upper end of the rotating lifting platform (7). The two output ends of the bidirectional synchronous motor (31) are provided with a rotating block (32). A rectangular slot is provided on the side of the rotating block (32) close to the bidirectional synchronous motor (31). A limiting mechanism (35) and a first steering mechanism (36) are provided in the rectangular slot. The limiting mechanism (35) is located on the upper side of the first steering mechanism (36). A steering control motor (33) is provided on one side of the first steering mechanism (36). A second steering mechanism (38) is provided at the lower part of the end of the rotating block (32) away from the bidirectional synchronous motor (31) corresponding to the position of the first steering mechanism (36).

2. The detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 1, characterized in that: The limiting mechanism (35) includes a first rotating shaft (351), the two ends of the first rotating shaft (351) are rotatably connected to the inner wall of the rectangular groove, and two left-right symmetrical first winding drums (352) are fixedly installed on the outer wall of the first rotating shaft (351), and a control gear (353) is provided between the two first winding drums (352). The first steering mechanism (36) includes a second rotating shaft (361). One end of the second rotating shaft (361) is fixedly connected to the output end of the steering control motor (33). The end of the second rotating shaft (361) away from the steering control motor (33) is rotatably connected to the inner wall of the rectangular groove. Two left-right symmetrical second winding drums (362) are fixedly installed on the outer wall of the second rotating shaft (361). A drive gear (363) is provided between the two second winding drums (362). The control gear (353) meshes with the drive gear (363).

3. The detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 1, characterized in that: The second steering mechanism (38) includes two symmetrical first winding frames (381) on the left and right, and a first driven gear (382) is provided between the two first winding frames (381). A first guide roller (39) is provided on the upper side of each of the two first winding frames (381), and the first guide roller (39) corresponds to the position of the two first winding drums (352).

4. A detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 2, characterized in that: The second wire rope (37) located on the same side is wound together with the second winding drum (362) with a second wire rope (37).

5. A detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 3, characterized in that: The probe arm joint (4) includes a first rectangular plate (41). At both ends of the first rectangular plate (41), a third steering mechanism (43) is provided at the position corresponding to the second steering mechanism (38). The third steering mechanism (43) consists of two second winding frames (431) and a second driven gear (432). The second driven gear (432) is located between the two second winding frames (431). A third steel wire rope (44) is wound together between the second winding frames (431) at both ends of the first rectangular plate (41). A second guide roller (42) corresponding to the position of the first guide roller (39) is provided on the upper side of each of the two second winding frames (431).

6. A detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 1, characterized in that: The end section (5) of the probe arm includes a second rectangular plate (51). An electric telescopic rod (52) is provided at one end of the second rectangular plate (51) away from the probe arm joint (4). The end of the electric telescopic rod (52) away from the second rectangular plate (51) is fixedly connected to the detection and maintenance mechanism (6).

7. A detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 6, characterized in that: The second rectangular plate (51) is provided with a third driven gear (53) at one end near the probe arm joint (4). The third driven gear (53) meshes with the second driven gear (432) in the adjacent probe arm joint (4). The first driven gear (382) meshes with the second driven gear (432) in the adjacent probe arm joint (4). The adjacent second driven gears (432) in the multiple adjacent probe arm joints (4) in the middle mesh with each other.

8. A detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 6, characterized in that: The end face of the second rectangular plate (51) near the joint (4) of the probe arm is provided with two first steel wire ropes (34) between the two first winding drums (352). The two first steel wire ropes (34) pass through the rotating block (32) and multiple first rectangular plates (41) in sequence, and the first steel wire ropes (34) also pass through the first guide roller (39) and multiple second guide rollers (42) in sequence.

9. A detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 1, characterized in that: The testing and maintenance mechanism (6) includes a maintenance platform (61). A drive motor (62) is fixedly installed at the upper middle part of the maintenance platform (61). A limiting ring (64) is provided at the upper end of the drive motor (62). A connecting rod (641) is fixedly connected to both sides of the limiting ring (64). A square frame (66) is provided between the upper parts of the two connecting rods (641). A rotating rod (67) that runs through the front and back is provided in the middle of the square frame (66). A bending block (65) is provided at the output end of the drive motor (62). A conveying pipe (68) is provided on the side away from the output end of the drive motor (62). The rotating rod (67) passes through the middle of the conveying pipe (68).

10. A detection and maintenance device for roads and bridges capable of preventing safety accidents according to claim 9, characterized in that: A glue pump (63) is provided on one side of the drive motor (62), and a glue delivery pipe (631) is provided between the glue pump (63) and the delivery pipe (68). A glue gun (69) is provided at one end of the delivery pipe (68) away from the bending block (65), and a detection camera (610) is provided on the upper side of the outer wall of the delivery pipe (68).

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