Angle-adjustable detection carrying platform for bridge detection

Abstract

The invention discloses an angle-adjustable detection carrying platform for bridge detection, and relates to the technical field of bridge detection. Comprising a moving device movably connected with a bridge deck roadbed and a bridge fence, a U-shaped groove plate vertically and fixedly connected to the outer portion of the moving device, a rotating channel with one end rotationally connected to the bottom end of the U-shaped groove plate, a first power structure arranged at the bottom end of the U-shaped groove plate and a second power structure arranged at the other end of the rotating channel. The extending structure is movably arranged on the rotating channel, a positioning reinforcing structure is further arranged at the other end of the rotating channel and connected with the inner bottom face of the bridge or the ship body, and the extending structure is connected with the moving device in a separated mode. According to the angle-adjustable detection carrying platform for bridge detection, provided by the invention, the detection carrying platform can move freely below a bridge floor efficiently, quickly and at low cost, and meanwhile, the detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge detection, and in particular to an angle-adjustable detection carrying platform for bridge detection. Background Art

[0002] Bridge engineering is a lifeline project related to the coordinated development of society and economy. The rapid development of bridge construction, huge capital investment, and prominent role in the economy and society have made people pay more and more attention to the safety and durability of bridges. However, with the extension of service time, a large number of bridges have entered the aging stage. Some bridges have already suffered from various diseases, but they have been operating for many years, posing huge safety hazards.

[0003] However, current bridge inspection often has the following technical problems:

[0004] (1) At present, traditional technical means generally use bridge inspection vehicles to carry workers to use instruments for inspection. This requires workers to work on the working platform of the inspection vehicle for a long time. However, during the inspection, they are often unable to move to certain specific inspection positions (such as the area between two bridge piers), which is inefficient and not practical.

[0005] (2) Existing bridge inspections usually involve building scaffolding, simple hanging baskets, or using bridge inspection vehicles to suspend personnel to the bottom of the bridge for manual inspection. This has technical problems such as closed bridges causing inconvenience in transportation, high safety risks for inspectors, and high labor intensity.

[0006] Since the structural cracks of most bridges mainly occur at the bottom of the bridges, it is difficult to detect them. Due to environmental restrictions, many places are not suitable for scaffolding. In addition, this method has low operating efficiency and each place must be rebuilt for inspection. The simple hanging basket is suspended by ropes and has insufficient rigidity and is very easy to swing, which is very inconvenient during inspection, has low safety, and cannot adapt to bridges of different widths. Bridge inspection vehicles are very expensive, generally costing more than three million yuan, and the inspection cost is very high.

[0007] (3) In addition, the difficulty of the mounting platform is that the mounting platform cannot be moved at will. If a wheeled vehicle is used, it needs to be manually driven, and the vehicle's self-balancing system will also have problems in actual testing. The mechanical arm is too heavy, causing the vehicle to be unbalanced, affecting the safety of the driver;

[0008] Therefore, how to enable the detection platform to move freely below the bridge deck efficiently, quickly and at low cost, while improving the accuracy of detection, becomes the key technical problem to be solved in this solution. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide an angle-adjustable detection carrying platform for bridge detection, which solves the technical problem of how to enable the detection carrying platform to move freely below the bridge deck efficiently, quickly and at low cost, while improving the accuracy of detection.

[0010] An angle-adjustable inspection carrying platform for bridge inspection comprises a mobile device movably connected to a bridge deck and a bridge enclosure, a U-shaped groove plate vertically fixedly connected to the outside of the mobile device, a rotating channel rotatably connected to the bottom end of the U-shaped groove plate at one end, a power structure 1 arranged at the bottom end of the U-shaped groove plate, a power structure 2 arranged at the other end of the rotating channel, and an extension structure movably arranged on the rotating channel, wherein a positioning reinforcement structure is further arranged at the other end of the rotating channel, the positioning reinforcement structure is connected to the inner bottom surface of the bridge or the hull, and the extension structure is detachably connected to the mobile device.

[0011] The mobile device includes a mobile frame, a power wheel 1 arranged at the bottom end of the mobile frame, a power wheel 2 arranged inside the mobile frame, a screw transmission structure connected to the mobile frame, a lifting cylinder connected to the top end of the mobile frame at a free end, a positioning plate arranged horizontally and fixedly connected to the lifting cylinder, a vertical plate fixedly connected to the positioning plate, and a fixed seat fixed to the bottom end of the vertical plate, wherein the fixed seat is a U-shaped structure with an opening arranged horizontally, and power wheels 4 are respectively arranged on the upper and lower sides of the interior of the U-shaped structure;

[0012] The screw transmission structure includes a transmission body, a slide plate arranged on the transmission body, and a power wheel three fixed on the inner side of the slide plate. The power wheel one is in contact with the bridge deck roadbed, the power wheel two and the power wheel three are respectively clamped on both sides of the bridge enclosure, and the U-shaped structure is clamped on the outer edge of the bridge deck roadbed.

[0013] The rotating channel comprises a rectangular parallelepiped slot plate, a rotating block hinged to the bottom end of the rectangular parallelepiped slot plate, and pedals fixed in the rectangular parallelepiped slot plate at equal intervals along its length direction, a plurality of pedals (183) forming a ladder-like structure, the rectangular parallelepiped slot plate being connected to the rotating block for vertical rotation, the rotating block being connected to the bottom end of the U-shaped slot plate for horizontal rotation, and the rectangular parallelepiped slot plate being movably clamped on the inner side of the U-shaped slot plate;

[0014] The top end of the rectangular parallelepiped slot plate is separately connected to a fastening block via a fastening rope, and the fastening block is fixed on the positioning plate.

[0015] The power structure 2 includes a connecting rope with one end fixedly connected to the top of the rectangular slot plate, a drone 1 connected to the other end of the connecting rope, and a drone 3 fixedly connected to the outside of the top of the rectangular slot plate.

[0016] The extension structure includes an extension plate slidably set on the rectangular slot plate, limit columns fixed on both sides of the bottom end of the extension plate, an adjustment rope with one end fixedly connected to the outer end of the extension plate, and a winding assembly connected to the other end of the adjustment rope. The winding assembly is separately positioned and connected to UAV 2, and the limit column is slidably set in a slide groove opened on the rectangular slot plate.

[0017] The positioning reinforcement structure includes an adjustment shaft rotatably connected to the top end of the rectangular slot plate, a rotating rod with one end respectively fixed at both ends of the adjustment shaft, a suction cup fixed at the other end of the rotating rod, and a vacuum tube with one end connected to the suction cup, the other end of the vacuum tube is connected to the suction structure, and the suction cup is connected to the inner bottom surface of the bridge or the hull.

[0018] The hull includes a hull body, a lower support tube vertically fixed inside the hull body, a telescopic cylinder fixed inside the lower support tube, and an upper support tube with a bottom end vertically fixedly connected to the telescopic cylinder, and the upper support tube is detachably connected to the suction cup.

[0019] The outer end of the positioning plate is fixedly connected to an inclined ladder frame, the bottom end of the ladder frame is provided with a power wheel 1, and the ladder frame is provided with a plurality of pedals;

[0020] The top end of the ladder frame is fixedly connected to one end of the fastening rope, the other end of the fastening rope is fixedly connected to the hook, and the hook is detachably connected to the winding assembly.

[0021] The rotating block is fixedly connected to a vertically arranged driving shaft, the driving shaft is rotatably connected to a rotating seat, the rotating seat is fixed to the bottom end of the U-shaped groove plate, and the driving shaft is connected to an adjusting motor.

[0022] The beneficial effects produced by the present invention are specifically as follows:

[0023] (1) A mobile device is provided, and the power wheels 2 and 3 are mounted on both sides of the bridge enclosure, and the power wheel 4 is mounted on the edge of the bridge deck roadbed to form a stable small carrying platform, thus avoiding the drawbacks of the previous inspection vehicle;

[0024] (2) A rotating channel is provided, which cooperates with the power structure 2 to achieve the following technical effects:

[0025] First, the rotating channel can rotate up and down, and can also rotate horizontally through the rotating block. Under the premise of fixing the moving device, the curved surface area below the bridge deck can be swept to detect the bridge deck, which not only expands the detection area at a certain position, but also detects the area between two bridge piers, so that some hidden areas can also be quickly detected;

[0026] Second, under the joint action of UAV 1 and UAV 3, the rotating channel is driven to rotate up and down and horizontally respectively, that is, the angle of the rotating channel is adjusted through the action of the UAV. The rotating channel is made of lightweight and high-strength materials as a whole, which greatly facilitates the rotation adjustment process of the rotating channel.

[0027] (3) An extension structure is provided to cooperate with the second drone and the adjustment rope. By extending the extension plate, the length of the rotating channel is extended, so that people can expand the detection area; at the same time, the second drone drives the adjustment rope to bypass the other side of the bottom end of the bridge and reach the top of the bridge, so that the winding assembly is connected with the fastening rope, forming a pull on the mobile frame, which helps to ensure the overall balance of the mobile device;

[0028] (4) A positioning reinforcement structure is provided, which uses the suction cup to attract the bottom surface of the bridge, thus helping to increase the bearing capacity of the rotating channel;

[0029] (5) When there is water under the bridge and the water level is not high, the suction cup is connected to the upper support cylinder on the hull in coordination with the hull. The movement of the hull drives the movement of the rotating channel, thereby achieving convenient and fast bridge inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front view of the detection and mounting platform in Example 1 of the present invention.

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of the detection and mounting platform in Example 1 of the present invention.

[0032] Figure 3 It is a schematic diagram of the structure of the mobile device used on the bridge deck roadbed in Example 1 of the present invention.

[0033] Figure 4 Schematic diagram of the structure of the rotation adjustment device in Example 1 of the present invention.

[0034] Figure 5 Schematic diagram of the working state structure of the rotation adjustment device in Example 1 of the present invention.

[0035] Figure 6 This is a schematic diagram of the connection structure between the rotating channel and the extension plate in Example 1 of the present invention.

[0036] Figure 7 Schematic diagram of the connection structure between the suction cup and the rotating rod in Example 1 of the present invention.

[0037] Figure 8 Schematic diagram of the connection structure between the U-shaped groove plate and the rotating block in Example 1 of the present invention.

[0038] Fig. 9It is a schematic diagram of the connection structure of the hull, the lower support tube and the upper support tube in Example 2 of the present invention.

[0039] Among them, the figure marks are: 1, bridge deck roadbed; 2, bridge enclosure; 3, mobile frame; 31, power wheel one; 32, power wheel two; 4, ladder frame; 5, foot pedal; 6, lead screw; 61, power motor; 62, skateboard; 63, power wheel three; 7, fastening rope; 8, lifting cylinder; 81, positioning plate; 82, vertical plate; 83, fixed seat; 84, power wheel four; 9, vacuum tube; 10, suction cup; 11, rotating rod; 111, adjusting shaft ; 12. Drone one; 13. Connecting rope; 14. Drone two; 15. Adjusting rope; 16. Extension plate; 161. Limiting column; 17. Drone three; 18. Rotating channel; 181. Fastening rope; 182. Fastening block; 183. Stepping on the pedal; 19. U-shaped groove plate; 191. Winding mechanism; 20. Rotating block; 21. Driving shaft; 211. Adjusting motor; 22. Hull; 23. Lower support cylinder; 24. Upper support cylinder. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0041] Example 1

[0042] See also Figure 1-Figure 8 An angle-adjustable detection carrying platform for bridge inspection includes a mobile device movably connected to a bridge deck roadbed 1 and a bridge enclosure 2, a U-shaped groove plate 19 vertically fixedly connected to the outside of the mobile device, a rotating channel 18 rotatably connected to the bottom end of the U-shaped groove plate 19 at one end, a power structure 1 arranged at the bottom end of the U-shaped groove plate 19, a power structure 2 arranged at the other end of the rotating channel 18, and an extension structure movably arranged on the rotating channel 18. A positioning reinforcement structure is also arranged at the other end of the rotating channel 18, the positioning reinforcement structure is connected to the inner bottom surface of the bridge or the hull 22, and the extension structure is detachably connected to the mobile device.

[0043] The mobile device includes a mobile frame 3, a power wheel 1 31 arranged at the bottom end of the mobile frame 3, a power wheel 2 32 arranged inside the mobile frame 3, a screw transmission structure connected to the mobile frame 3, a lifting cylinder 8 whose free end is connected to the top of the mobile frame 3, a positioning plate 81 arranged horizontally and fixedly connected to the lifting cylinder 8, a vertical plate 82 fixedly connected to the positioning plate 81, and a fixed seat 83 fixed to the bottom end of the vertical plate 82, wherein the fixed seat 83 is a U-shaped structure with an opening arranged horizontally, and power wheels 4 84 are arranged on the upper and lower sides of the U-shaped structure respectively;

[0044] The screw transmission structure includes a transmission body, a slide plate 62 arranged on the transmission body, and a power wheel three 63 fixed on the inner side of the slide plate 62. The power wheel one 31 is in contact with the bridge deck roadbed 1, the power wheel two 32 and the power wheel three 63 are respectively clamped on both sides of the bridge enclosure 2, and the U-shaped structure is clamped on the outer edge of the bridge deck roadbed 1.

[0045] The transmission body includes a lead screw 6 , a guide column, and a power motor 61 connected to the lead screw 6 .

[0046] The rotating channel 18 comprises a rectangular parallelepiped slot plate, a rotating block 20 hinged to the bottom end of the rectangular parallelepiped slot plate, and a pedal 183 fixed in the rectangular parallelepiped slot plate at equal intervals along its length direction, wherein a plurality of pedals (183) form a ladder-like structure, the rectangular parallelepiped slot plate is connected to the rotating block 20 for vertical rotation, the rotating block 20 is connected to the bottom end of the U-shaped slot plate 19 for horizontal rotation, and the rectangular parallelepiped slot plate is movably clamped on the inner side of the U-shaped slot plate 19;

[0047] The top end of the rectangular parallelepiped slot plate is separately connected to a fastening block 182 via a fastening rope 181 , and the fastening block 182 is fixed on the positioning plate 81 .

[0048] More preferably, the articulated shaft connected to the rectangular slot plate and the rotating block 20 is connected to a rotating cylinder, which enables the rectangular slot plate to slowly rotate outward with the assistance of the rotating cylinder, thereby assisting the operation of UAV 12, UAV 2 14 and UAV 3 17 and increasing the safety of the system operation; the rotating cylinder is a prior art and will not be described in detail here and will not be indicated in the accompanying drawings.

[0049] More preferably, a winding mechanism 191 is provided at the lower end of the U-shaped trough plate 19 and below the bridge deck, and a pulling rope is provided on the winding mechanism 191, one end of the pulling rope is fixedly connected to the top of the rectangular trough plate, and the winding mechanism 191 is provided on the inner side of the U-shaped trough plate 19, so as not to affect the up and down rotation and horizontal rotation of the rectangular trough plate. According to the rotation situation of the rectangular trough plate, the winding work of the winding mechanism 191 is adjusted to ensure that the outer end of the rectangular trough plate is connected to the winding mechanism 191 through the pulling rope, which helps to further ensure the stability of the rectangular trough plate and avoid safety accidents.

[0050] The winding mechanism 191 is shown schematically in the accompanying drawings, and it is hereby explained that in order to simplify the design, the pulling rope is no longer marked, and it is hereby explained.

[0051] The power structure 2 includes a connecting rope 13 fixedly connected to the top of the rectangular parallelepiped slot plate at one end, a drone 12 connected to the other end of the connecting rope 13, and a drone 3 17 fixedly connected to the outside of the top of the rectangular parallelepiped slot plate. There can be multiple drones 12 and drones 3 17.

[0052] The extension structure includes an extension plate 16 slidably set on the rectangular slot plate, limit columns 161 fixed on both sides of the bottom end of the extension plate 16, an adjustment rope 15 one end of which is fixedly connected to the outer end of the extension plate 16, and a winding assembly connected to the other end of the adjustment rope 15. The winding assembly is separately positioned and connected to the drone 2 14, and the limit columns 161 are slidably set in the slide groove opened on the rectangular slot plate.

[0053] Among them, the drone 2 14 can have multiple ones; more preferably, guardrails are vertically fixed on both sides of the extension plate 16, so that after people enter the extension plate 16, a certain protection effect can be achieved.

[0054] The positioning reinforcement structure includes an adjusting shaft 111 rotatably connected to the top of the rectangular trough plate, a rotating rod 11 with one end fixed to both ends of the adjusting shaft 111, a suction cup 10 fixed to the other end of the rotating rod 11, and a vacuum tube 9 with one end connected to the suction cup 10, the other end of the vacuum tube 9 is connected to the suction structure, and the suction cup 10 is connected to the inner bottom surface of the bridge or the hull 22.

[0055] The working principle of the suction cup 10 is prior art and will not be described in detail here. For example, the suction cup 10 can be a tile suction cup. Since the bottom surface of the bridge is concrete, the concrete surface is usually relatively flat, which enables the suction cup to be effectively adsorbed on the surface of the concrete.

[0056] The outer end of the positioning plate 81 is fixedly connected to the inclined ladder frame 4, the bottom end of the ladder frame 4 is provided with a power wheel 31, and the ladder frame 4 is provided with a plurality of pedals 5;

[0057] The top end of the ladder frame 4 is fixedly connected to one end of the fastening rope 7, and the other end of the fastening rope 7 is fixedly connected to the hook, and the hook is detachably connected to the winding assembly.

[0058] The rotating block 20 is fixedly connected to a vertically arranged driving shaft 21 , the driving shaft 21 is rotatably connected to a rotating seat, the rotating seat is fixed to the bottom end of the U-shaped groove plate 19 , and the driving shaft 21 is connected to an adjusting motor 211 .

[0059] The specific working process of the present invention is as follows:

[0060] A mobile device is provided, and the power wheel 2 32 and the power wheel 3 63 are clamped on both sides of the bridge enclosure 2, and the power wheel 4 84 is clamped on the edge of the bridge deck roadbed 1 to form a stable small carrying platform, avoiding the disadvantages of the previous inspection vehicle. This structure has high stability;

[0061] A rotating channel 18 is provided. With the cooperation of the power structure 2, the rotating channel 18 can rotate up and down. When rotating up and down, the fastening rope 181 is loosened from the fastening block 182, so that the rotating channel 18 is free from the restriction. Driven by the drone 12 and the drone 2 14, the rotating channel 18 rotates slowly. When the rotating channel 18 starts to rotate, people step on the pedal 183 and gradually enter the rotating channel 18.

[0062] When the rotating channel 18 rotates to a horizontal state, the regulating motor 211 works to drive the driving shaft 21 to rotate, and the driving shaft 21 drives the rotating block 20 to rotate horizontally, rotating between 90°-270°, and entering below the bridge deck. At this time, under the premise that the moving device is fixed, the rotating channel 18 sweeps the arc surface area below the bridge deck to detect the bridge deck, which not only expands the detection area at a certain position, but also detects the area between two bridge piers, so that some hidden areas can also be quickly detected;

[0063] Under the joint action of the drone 12 and the drone 3 17, the rotating channel 18 is driven to rotate up and down and horizontally respectively, that is, the angle of the rotating channel 18 is adjusted by the action of the drone. The rotating channel 18 is made of lightweight and high-strength materials as a whole, which greatly facilitates the rotation adjustment process of the rotating channel 18.

[0064] When the rotating channel 18 rotates to the corresponding position below the bridge deck, driven by the drone, one end is lifted upward, so that the suction cup 10 is tightly attached to the bottom surface of the bridge. The suction cup 10 is attached to the bottom surface of the bridge, which helps to increase the bearing capacity of the rotating channel 18, and at this time, it also helps the working time of the drone;

[0065] When the measuring position of the bridge deck needs to be changed, the suction cup 10 is temporarily separated from the bridge deck, and the rotating channel 18 continues to rotate a certain angle to a suitable position, and the suction cup 10 works again, and the above process is repeated. The detection equipment can be carried by another drone, which is convenient for reducing people's workload;

[0066] An extension structure is provided, which cooperates with the drone 2 14 and the adjustment rope 15. By extending the extension plate 16, the length of the rotating channel 18 is extended, so that people can expand the detection area.

[0067] At the same time, drone 2 14 drives the adjustment rope 15 to bypass the other side of the bottom end of the bridge and reach the top of the bridge, so that the winding assembly is connected to the fastening rope 7, forming a pull on the mobile frame 3, which helps to ensure the overall balance of the mobile device.

[0068] Situation description: In this technical solution, the up and down rotation and horizontal rotation of the entire rotating channel 18 are mainly realized by UAV 1 12, UAV 2 14 and UAV 3 17. Although the UAV is a complex device involving multiple subsystems such as flight control system, power system, communication system, etc., on the one hand, the existing UAV technology is very mature and the control operation is not difficult. On the other hand, the movement actions and movement trajectories of UAV 1 12, UAV 2 14 and UAV 3 17 are actually the same. On the surface, it is necessary to control multiple UAVs, but in fact, it is only necessary to control the movement as a whole. The operation is simple and easy. In addition, due to the setting of the connecting rope 13 and the adjusting rope 15, the flexible connection method does not require precise control and coordination of these subsystems, as long as it is within the allowable error range. Therefore, using UAVs to realize these rotation functions will not increase the complexity of the system.

[0069] Example 2

[0070] See also Fig. 9 The hull 22 includes a hull body, a lower support tube 23 vertically fixed inside the hull body, a telescopic cylinder fixed inside the lower support tube 23, and an upper support tube 24 vertically fixed at the bottom end to the telescopic cylinder. The upper support tube 24 is separately connected to the suction cup 10.

[0071] When there is water under the bridge and the water level is not high, the suction cup 10 (the rotating rod 11 drives the suction cup 10 to rotate) is connected to the upper support tube 24 on the hull 22 in conjunction with the hull 22. The movement of the hull 22 drives the movement of the rotating channel 18, thereby realizing convenient and fast bridge inspection.

[0072] Technical features not described in the present invention can be achieved through or by adopting existing technologies and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An angle-adjustable detection platform for bridge inspection, characterized in that: The invention comprises a moving device movably connected to a bridge deck roadbed (1) and a bridge enclosure (2), a U-shaped groove plate (19) vertically fixedly connected to the outside of the moving device, a rotating channel (18) rotatably connected to the bottom end of the U-shaped groove plate (19) at one end, a power structure 1 arranged at the bottom end of the U-shaped groove plate (19), a power structure 2 arranged at the other end of the rotating channel (18), and an extension structure movably arranged on the rotating channel (18), wherein the other end of the rotating channel (18) is also provided with a positioning reinforcement structure, the positioning reinforcement structure is connected to the inner bottom surface of the bridge or the hull (22), and the extension structure is detachably connected to the moving device.

2. The angle-adjustable bridge inspection platform according to claim 1, characterized in that: The moving device comprises a moving frame (3), a power wheel 1 (31) arranged at the bottom end of the moving frame (3), a power wheel 2 (32) arranged inside the moving frame (3), a screw transmission structure connected to the moving frame (3), a lifting cylinder (8) whose free end is connected to the top end of the moving frame (3), a positioning plate (81) arranged horizontally and fixedly connected to the lifting cylinder (8), a vertical plate (82) fixedly connected to the positioning plate (81), and a fixing seat (83) fixed to the bottom end of the vertical plate (82), wherein the fixing seat (83) is a U-shaped structure with an opening arranged horizontally, and power wheels 4 (84) are respectively arranged on the upper and lower sides of the interior of the U-shaped structure; The screw transmission structure comprises a transmission body, a slide plate (62) arranged on the transmission body, and a power wheel three (63) fixed on the inner side of the slide plate (62); the power wheel one (31) is in contact with the bridge deck roadbed (1); the power wheel two (32) and the power wheel three (63) are respectively clamped on both sides of the bridge enclosure (2); and the U-shaped structure is clamped on the outer edge of the bridge deck roadbed (1).

3. The angle-adjustable bridge inspection platform according to claim 2 is characterized in that: The rotating channel (18) comprises a rectangular parallelepiped slot plate, a rotating block (20) hinged to the bottom end of the rectangular parallelepiped slot plate, and pedals (183) fixed in the rectangular parallelepiped slot plate at equal intervals along its length direction, wherein a plurality of pedals (183) form a ladder-like structure, wherein the rectangular parallelepiped slot plate is connected to the rotating block (20) in an up-and-down rotational manner, wherein the rotating block (20) is connected to the bottom end of the U-shaped slot plate (19) in a horizontal rotational manner, and the rectangular parallelepiped slot plate is movably clamped on the inner side of the U-shaped slot plate (19); The top end of the rectangular parallelepiped slot plate is separately connected to a fastening block (182) via a fastening rope (181), and the fastening block (182) is fixed on the positioning plate (81).

4. The angle-adjustable bridge inspection platform according to claim 3 is characterized in that: The power structure 2 comprises a connecting rope (13) having one end fixedly connected to the top end of the rectangular parallelepiped slot plate, a drone 1 (12) connected to the other end of the connecting rope (13), and a drone 3 (17) fixedly connected to the outside of the top end of the rectangular parallelepiped slot plate.

5. The angle-adjustable bridge inspection platform according to claim 3 is characterized in that: The extension structure comprises an extension plate (16) slidably arranged on the rectangular slot plate, limit posts (161) fixed on both sides of the bottom end of the extension plate (16), an adjustment rope (15) one end of which is fixedly connected to the outer end of the extension plate (16), and a winding assembly connected to the other end of the adjustment rope (15), the winding assembly being detachably positioned and connected to the drone 2 (14), and the limit posts (161) being slidably arranged in a slide groove provided on the rectangular slot plate.

6. The angle-adjustable bridge inspection platform according to claim 3, characterized in that: The positioning reinforcement structure comprises an adjustment shaft (111) rotatably connected to the top end of the rectangular parallelepiped slot plate, a rotation rod (11) one end of which is respectively fixed to two ends of the adjustment shaft (111), a suction cup (10) fixed to the other end of the rotation rod (11), and a vacuum tube (9) one end of which is connected to the suction cup (10), the other end of the vacuum tube (9) being connected to a suction structure, and the suction cup (10) being connected to the inner bottom surface of the bridge or the hull (22).

7. The angle-adjustable bridge inspection platform according to claim 6, characterized in that: The hull (22) comprises a hull body, a lower support tube (23) vertically fixed inside the hull body, a telescopic cylinder fixed inside the lower support tube (23), and an upper support tube (24) whose bottom end is vertically fixedly connected to the telescopic cylinder, wherein the upper support tube (24) is detachably connected to the suction cup (10).

8. The angle-adjustable bridge inspection platform according to claim 2, characterized in that: The outer end of the positioning plate (81) is fixedly connected to the inclined ladder frame (4), the bottom end of the ladder frame (4) is provided with a power wheel (31), and the ladder frame (4) is provided with a plurality of foot pedals (5); The top end of the ladder frame (4) is fixedly connected to one end of a fastening rope (7), the other end of the fastening rope (7) is fixedly connected to a hook, and the hook is detachably connected to the winding assembly.

9. The angle-adjustable bridge inspection platform according to claim 3, characterized in that: The rotating block (20) is fixedly connected to a vertically arranged driving shaft (21), the driving shaft (21) is rotatably connected to a rotating seat, the rotating seat is fixed to the bottom end of the U-shaped groove plate (19), and the driving shaft (21) is connected to an adjusting motor (211).

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