Telescopic and rotatable bridge detection mobile platform

Abstract

The utility model discloses a telescopic and rotatable bridge detection mobile platform. The telescopic and rotatable bridge detection mobile platform comprises a mobile carrier, an obstacle avoidance mechanism, a lifting mechanism, a vertical arm, a horizontal rotating mechanism and a horizontal arm, the obstacle avoidance mechanism is installed on the moving carrier, the vertical arm is installed on one side of the obstacle avoidance mechanism, the vertical arm is connected with the obstacle avoidance mechanism through the lifting mechanism, the lifting mechanism is used for lifting the vertical arm, and the horizontal rotating mechanism is installed at the bottom of the vertical arm. According to the telescopic and rotatable bridge detection mobile platform, the mobile carrier, the obstacle avoidance mechanism, the lifting mechanism, the vertical arm, the horizontal rotating mechanism and the telescopic horizontal arm are arranged, the obstacle avoidance mechanism and the horizontal rotating mechanism are used for avoiding obstacles such as a lamp pole and a bridge pier, detection personnel do not need to go down from the platform, and the detection efficiency is improved. Therefore, the bridge detection speed can be greatly improved, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge detection platforms, in particular to a telescopic and rotatable bridge detection mobile platform. Background Art

[0002] As my country's economy continues to flourish, the transportation industry has ushered in a golden period of vigorous development, and the number of highway bridges has also shown a rapid growth trend. As an important part of the road network, bridges bear the important responsibility of connecting urban and rural areas and promoting regional development. Therefore, bridge construction is regarded as one of the key projects of national infrastructure and the lifeline of coordinated social and economic development. However, as the service time of bridges continues to increase, the long-term impact of environmental factors begins to appear, such as the fatigue effect of environmental loads, corrosion effect, and material aging, which lead to various fatigue and damage phenomena in bridge structures. If these damages are not repaired in time, they will further aggravate the stratification and cracking of concrete, and may eventually cause serious collapse accidents, causing huge losses to the social economy and even endangering the safety of people's lives. In view of this, how to ensure the safety and durability of bridges has become a focus of increasing attention, and the importance of bridge detection has become increasingly prominent. However, since the structural cracks of most bridges mainly appear at the bottom of the bridge, this poses a huge challenge to the detection work. At present, the commonly used detection methods include building scaffolding under the bridge, simple hanging baskets, or using bridge inspection vehicles and other technical means to ensure comprehensive monitoring and timely repair of the bridge structure.

[0003] An existing disclosed mobile platform for a bridge inspection vehicle includes a traveling mechanism and a truss assembly. The traveling mechanism is a traveling vehicle. The inspection vehicle can form a three-dimensional space operation system through a slewing support arm, a vertical arm and a working platform, in conjunction with a flip mechanism, a lifting mechanism and a slewing mechanism.

[0004] However, the platform still has some shortcomings when in use: when the inspection vehicle is moving, if it encounters a street light pole that the inspection vehicle cannot pass due to the height of the truss, it is necessary to withdraw the inspection personnel first, then retract the inspection truss platform, and then open the inspection platform after the vehicle passes the street light, and the personnel return to the inspection post. The whole process takes more than ten minutes or even longer, which seriously affects the inspection speed.

[0005] Therefore, it is necessary to provide a retractable and rotatable bridge inspection mobile platform to solve the above technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a retractable and rotatable bridge inspection mobile platform that can avoid obstacles such as lamp posts and bridge piers, and can improve the bridge inspection speed.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] The retractable and rotatable bridge inspection mobile platform includes: a mobile carrier, an obstacle avoidance mechanism, a lifting mechanism, a vertical arm, a horizontal rotation mechanism and a horizontal arm. The mobile carrier is a tracked carrier or a trackless carrier. The tracked carrier is a vehicle running on a track, and the track is installed near the two sides of the bridge deck. The trackless carrier is a heavy vehicle running on the bridge deck, which should have sufficient support strength and stability. The obstacle avoidance mechanism is installed on the mobile carrier, and the obstacle avoidance mechanism can avoid obstacles such as street lamp poles. The vertical arm is installed on one side of the obstacle avoidance mechanism, and the two are connected by a lifting mechanism. The lifting mechanism is used to lift the vertical arm, and a ladder for people to go up and down is installed on the vertical arm. The horizontal rotation mechanism is installed at the bottom of the vertical arm, and the horizontal arm is connected to the horizontal rotation mechanism. The horizontal arm is controlled to rotate in the horizontal plane through the horizontal rotation mechanism. Both the vertical arm and the horizontal arm are truss structures.

[0009] Preferably, the horizontal rotation mechanism includes a driving motor and a rotating shaft, both of which are installed at the bottom of the vertical arm, the driving motor is used to drive the rotating shaft to rotate, and the rotating shaft is connected to the horizontal arm.

[0010] Preferably, a guide rail and a telescopic arm are installed in the horizontal arm, the telescopic arm is slidably connected to the guide rail, a permanent guardrail is installed on the horizontal arm, a temporary guardrail that can be removed at any time is installed on the telescopic arm, and a driving assembly is provided on the horizontal arm to control the telescopic arm to move along the guide rail.

[0011] Preferably, the driving assembly includes two electric winding drums installed on the horizontal arm, and the first steel wire rope and the second steel wire rope are respectively wound on the two electric winding drums. A steering shaft is installed at the bottom of the horizontal arm. The first steel wire rope is directly connected to one end of the telescopic arm, and the second steel wire rope bypasses the steering shaft and then turns back to connect to one end of the telescopic arm.

[0012] Preferably, the obstacle avoidance mechanism includes a first connecting platform and a second connecting platform, a plurality of connecting components are arranged between the first connecting platform and the second connecting platform, the plurality of connecting components are arranged in two layers, and the connecting components in each layer are evenly arranged, and the spacing between them is greater than the maximum diameter of the lamp post. The first connecting platform is connected to the mobile vehicle, and the lifting mechanism is arranged on one side of the second connecting platform.

[0013] Preferably, the connecting assembly includes a first hydraulic cylinder installed on one side of the first connecting platform, a hydraulic chuck is installed on the end of the first hydraulic cylinder, a fixing piece is installed on the side of the second connecting platform opposite to the hydraulic chuck, and the hydraulic chuck clamps the fixing piece to connect the first connecting platform with the second connecting platform.

[0014] Preferably, the lifting mechanism includes a gear shaft driven by a motor, which drives the gear shaft to rotate after being decelerated by a reducer, and the gear shaft is rotatably installed on one side of the second connecting platform. A vertical track is installed on one side of the second connecting platform, and a lifting frame is installed on the vertical track. The lifting frame is connected to the vertical arm, and a rack is installed on one side of the lifting frame, and the rack is meshed with the gear shaft.

[0015] Preferably, the hydraulic chuck comprises a mounting frame connected to one end of the first hydraulic cylinder, a clamping plate is installed in the mounting frame, a second hydraulic cylinder is installed on the top of the mounting frame, and an output shaft of the second hydraulic cylinder is connected to the clamping plate.

[0016] Preferably, the fixing member includes a connecting column, fixing plates are installed at both ends of the connecting column, a clamping block is installed on one of the fixing plates, an anti-slip groove is provided on the clamping block, a plurality of guide rods are installed between the two fixing plates, a spring is sleeved on the connecting column, the guide rod and the connecting column pass through the second connecting platform, so that the fixing member is elastically connected to the second connecting platform.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) The utility model is provided with a mobile carrier, an obstacle avoidance mechanism, a lifting mechanism, a vertical arm, a horizontal rotation mechanism and a telescopic horizontal arm. The obstacle avoidance mechanism and the horizontal rotation mechanism are used to avoid obstacles such as lamp posts and bridge piers. The inspection personnel do not need to get off the platform, thereby greatly improving the speed of bridge inspection and improving the inspection efficiency.

[0019] (2) The utility model is provided with an obstacle avoidance mechanism including a first connecting platform, a second connecting platform and a plurality of connecting components, so that when encountering a lamp post, the lamp post can be avoided so that the lamp post passes through the device;

[0020] (3) The utility model can conveniently drive the telescopic arm to move by providing a driving assembly including two electric winding drums, a first steel wire rope, a second steel wire rope and a steering shaft;

[0021] (4) The utility model can conveniently extend the horizontal arm and increase the observable width by providing a telescopic arm and a driving assembly, so as to adapt to the detection of bridges of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the front view structure of the retractable and rotatable bridge inspection mobile platform provided by the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the use of a cutter mechanism in a retractable and rotatable bridge inspection mobile platform;

[0024] Figure 3 for Figure 1The schematic diagram of the structure of the horizontal arm in the retractable and rotatable bridge inspection mobile platform shown;

[0025] Figure 4 for Figure 1 The structural schematic diagram of the obstacle avoidance mechanism in the retractable and rotatable bridge inspection mobile platform shown;

[0026] Figure 5 for Figure 1 A schematic cross-sectional view of the obstacle avoidance mechanism in the retractable and rotatable bridge inspection mobile platform shown;

[0027] Figure 6 for Figure 1 The schematic diagram of the structure of the fixed parts in the retractable and rotatable bridge inspection mobile platform shown;

[0028] Figure 7 for Figure 1 The schematic diagram of the structure of the hydraulic chuck in the retractable and rotatable bridge inspection mobile platform is shown.

[0029] Among them, the names corresponding to the figure numbers are: 1-mobile carrier, 2-obstacle avoidance mechanism, 3-lifting mechanism, 4-vertical arm, 5-horizontal rotation mechanism, 6-horizontal arm, 7-driving motor, 8-rotating axis, 9-telescopic arm, 10-guide rail, 11-electric winding drum, 12-first steel wire rope, 13-second steel wire rope, 14-adjustment axis, 15-first connecting platform, 16-second connecting platform, 17-first hydraulic cylinder, 18-vertical rail, 19-lifting frame, 20-rack, 21-gear shaft, 22-fixing part, 23-connecting column, 24-spring, 25-clamping block, 26-mounting frame, 27-second hydraulic cylinder, 28-anti-slip groove, 29-fixing plate, 30-guide rod, 31-clamping plate. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0031] Embodiment 1:

[0032] like Figure 1-7 As shown, the telescopic and rotatable bridge inspection mobile platform provided by the utility model includes: a mobile carrier 1, an obstacle avoidance mechanism 2, a lifting mechanism 3, a vertical arm 4, a horizontal rotation mechanism 5 and a horizontal arm 6. The mobile carrier 1 is a tracked carrier or a trackless carrier. The tracked carrier is a vehicle running on a track, and the track is installed at a position close to both sides of the bridge deck ( Figure 1As shown), the trackless vehicle is a heavy vehicle traveling on the bridge deck, which should have sufficient support strength and stability, such as the vehicle disclosed in CN215857208U, the obstacle avoidance mechanism 2 is installed on the mobile vehicle 1, the obstacle avoidance mechanism 2 can avoid obstacles such as street lamp posts, the vertical arm 4 is installed on one side of the obstacle avoidance mechanism 2, and the two are connected by a lifting mechanism 3, the lifting mechanism 3 is used to lift the vertical arm 4, the vertical arm 4 is equipped with a ladder for people to go up and down, the horizontal rotation mechanism 5 is installed at the bottom of the vertical arm 4, the horizontal arm 6 is connected to the horizontal rotation mechanism 5, and the horizontal arm 6 is controlled to rotate in the horizontal plane by the horizontal rotation mechanism 5. Both the vertical arm 4 and the horizontal arm 6 are truss structures. Taking the mobile vehicle 1 as a rail vehicle as an example, first, tracks are installed on both sides of the bridge deck, and the mobile vehicle 1 is installed on the tracks so that the mobile vehicle 1 can move along the tracks. The personnel enter the vertical arm 4 through the obstacle avoidance mechanism 2, climb down the ladder on the vertical arm 4, and walk to the horizontal arm 6. The lifting mechanism 3 controls the lifting of the horizontal arm 6 to adjust the distance between the horizontal wall and the bottom of the bridge, so that the personnel can observe and record the situation at the bottom of the bridge. As the mobile vehicle 1 continues to move, the inspection personnel can easily observe the entire bridge disease and record it. When encountering a lamp post, the obstacle avoidance mechanism 2 is used to avoid the lamp post, and the personnel can continue to work. When encountering a bridge pier, the horizontal rotation mechanism 5 controls the horizontal arm 6 to rotate 90 degrees to make it flush with the forward direction of the mobile vehicle 1. After the mobile vehicle 1 travels a certain distance and passes the bridge pier, the horizontal wall 6 is reversed and reset to continue the inspection operation. During the above obstacle avoidance process, the inspector does not need to return from the horizontal arm 6 to the bridge deck or the mobile vehicle 1, nor does he need to retract the vertical arm 4 and the horizontal arm 6, thereby greatly improving the inspection efficiency and increasing the inspection speed.

[0033] By providing a mobile carrier 1, an obstacle avoidance mechanism 2, a lifting mechanism 3, a vertical arm 4, a horizontal rotation mechanism 5 and a telescopic horizontal arm 6, and utilizing the obstacle avoidance mechanism 2 and the horizontal rotation mechanism 5, obstacles such as lamp posts and bridge piers can be avoided. The inspectors do not need to get off the platform, thereby greatly improving the speed of bridge inspection and improving the inspection efficiency.

[0034] Embodiment 2:

[0035] like Figure 3 As shown, the horizontal rotation mechanism 5 includes a driving motor 7 and a rotating shaft 8, both of which are installed at the bottom of the vertical arm 4. The driving motor 7 is used to drive the rotating shaft 8 to rotate, and the rotating shaft 8 is connected to the horizontal arm 6. When in use, the driving motor 7 is started to rotate the rotating shaft 8, and then the horizontal arm 6 is driven to rotate horizontally through the rotating shaft 8.

[0036] By providing a horizontal rotation mechanism 5 including a driving motor 7 and a rotating shaft 8, the horizontal arm 6 can be driven to rotate horizontally conveniently.

[0037] Embodiment 3:

[0038] like Figure 3 As shown, a guide rail 10 and a telescopic arm 9 are installed in the horizontal arm 6, the telescopic arm 9 is slidably connected to the guide rail 10, a permanent guardrail is installed on the horizontal arm 6, and a temporary guardrail that can be removed at any time is installed on the telescopic arm 9. A driving component is provided on the horizontal arm 6, and the telescopic arm 9 is controlled by the driving component to move along the guide rail 10, thereby extending the telescopic arm 9 from the horizontal wall 6, or retracting the telescopic arm 9 into the horizontal wall 6. The inspection personnel can stand on the telescopic arm 9 to observe and inspect the other side of the bridge bottom.

[0039] By providing the telescopic arm 9 and the driving assembly, the horizontal arm 6 can be conveniently extended to increase the observable width so as to adapt to the detection of bridges of different widths.

[0040] Embodiment 4:

[0041] like Figure 3 As shown, the driving assembly includes two electric winding drums 11 installed on the horizontal arm 6, and the two electric winding drums 11 respectively wind up the first steel wire rope 12 and the second steel wire rope 13. A steering shaft 14 is installed at the bottom of the horizontal arm 6. The first steel wire rope 12 is directly connected to one end of the telescopic arm 9, and the second steel wire rope 13 passes around the steering shaft 14, and then turns back to connect with one end of the telescopic arm 9 (the end close to the connection between the first steel wire rope 12 and the telescopic arm). When in use, the electric winding drum 11 connected to the first steel wire rope 12 rotates forward, winds up the first steel wire rope 11, and pulls the telescopic arm 9 to move toward the side close to the electric winding drum 11. At the same time, the other electric winding drum 11 reverses to release the second steel wire rope 12. When the telescopic arm 9 needs to be extended further from the horizontal arm 6, the operation is opposite to this.

[0042] By providing a driving assembly including two electric winding drums 11, a first steel wire rope 12, a second steel wire rope 13 and a steering shaft 14, the telescopic arm 9 can be driven to move conveniently.

[0043] Embodiment 5:

[0044] like Figure 4-5As shown, the obstacle avoidance mechanism 2 includes a first connecting platform 15 and a second connecting platform 16, a plurality of connecting components are arranged between the first connecting platform 15 and the second connecting platform 16, the plurality of connecting components are divided into two layers, and the connecting components of each layer are evenly arranged, and the spacing between them is greater than the maximum diameter of the lamp post, the first connecting platform 15 is connected to the mobile vehicle 1, and the lifting mechanism 3 is arranged on one side of the second connecting platform 16, and the connecting component includes a first hydraulic cylinder 17 installed on one side of the first connecting platform 15, a hydraulic chuck is installed on the end of the first hydraulic cylinder 17, and a fixing part 22 is installed on the side of the second connecting platform 16 facing the hydraulic chuck, and the hydraulic chuck clamps the fixing part 22 to connect the first connecting platform 15 with the second connecting platform 16. When encountering a lamp post, all the first hydraulic cylinders 17 extend at the same time to move the second connecting platform 16 away from the first connecting platform 15, so that a gap allowing the lamp post to pass through appears between the two, and then the first hydraulic chuck close to the lamp post releases the fixing part 22, and then the first hydraulic chuck The cylinder 17 retracts the hydraulic chuck toward the side close to the first connecting platform 5, so that a gap appears between the hydraulic clamp and the fixing part 22 to allow the lamp post to pass through. Then the carrier 1 is moved forward, and after the lamp post passes through the gap between the hydraulic clamp and the fixing part 22, the first hydraulic cylinder 17 extends, so that the hydraulic chuck approaches the fixing part 22, and then the hydraulic chuck clamps the fixing part 22. Then the same operation is performed on the remaining connecting components in turn, so that the lamp post passes through the gap between the first connecting platform 15 and the second connecting platform 16, and then the lamp post bypasses the device to achieve an obstacle avoidance effect. It is worth mentioning that the power supply of the lifting mechanism 3, the horizontal rotation mechanism 4 and the electric winding drum 11 is a battery (the battery can be installed on the second connecting platform 16, the vertical arm 4 or the horizontal arm 6). The battery outputs AC power through the inverter for power supply, and the controller of the above device is installed on the horizontal arm 6, or is wirelessly remotely controlled. Therefore, during the obstacle avoidance operation, the obstacle avoidance will not be hindered by the line.

[0045] By providing the obstacle avoidance mechanism 2 including the first connecting platform 15, the second connecting platform 16 and a plurality of connecting components, it is possible to avoid a lamp post when encountering the lamp post, so that the lamp post passes through the device.

[0046] Embodiment 6:

[0047] like Figure 4-5 As shown, the lifting mechanism 3 includes a gear shaft 21 driven by a motor. The motor drives the gear shaft 21 to rotate after being decelerated by a reducer. The gear shaft 21 is rotatably installed on one side of the second connecting platform 16. A vertical track 18 is installed on one side of the second connecting platform 16. A lifting frame 19 is installed on the vertical track 18. The lifting frame 19 is connected to the vertical arm 4. A rack 20 is installed on one side of the lifting frame 19. The rack 20 is meshed with the gear shaft 21. When in use, the gear shaft 21 rotates to drive the rack 20 to rise and fall, thereby causing the lifting frame 19 to rise and fall, and thus the vertical arm 4 to rise and fall.

[0048] By providing a lifting mechanism 3 including a vertical track 18, a lifting frame 19, a rack 20 and a gear shaft 21, the vertical arm 4 can be driven to move up and down conveniently.

[0049] Embodiment 7:

[0050] like Figure 6-7 As shown, the hydraulic chuck includes a mounting frame 26, the mounting frame 26 is connected to one end of the first hydraulic cylinder 17, a clamping plate 31 is installed in the mounting frame 26, a second hydraulic cylinder 27 is installed on the top of the mounting frame 26, the output shaft of the second hydraulic cylinder 27 is connected to the clamping plate 31, the fixing member 22 includes a connecting column 23, and fixing plates 29 are installed at both ends of the connecting column 23, a clamping block 25 is installed on one of the fixing plates 29, and an anti-slip groove 28 is opened on the clamping block 25, and a plurality of guide rods 30 are installed between the two fixing plates 29, and a connecting column 23 is sleeved with a fixing plate 29. A spring 24, a guide rod 30 and a connecting column 23 pass through the second connecting platform 16, so that the fixing piece 22 is elastically connected to the second connecting platform 16. When in use, the first hydraulic cylinder 17 is extended to allow the clamping block 25 to enter the mounting frame 26, so that the clamping plate 31 on the mounting frame 26 is aligned with the anti-slip groove 28, and then the second hydraulic cylinder 27 is started to allow the clamping plate 31 to descend and be stuck in the anti-slip groove 28, thereby allowing the first telescopic rod 17 to be elastically connected to the second connecting platform 16 through the fixing piece 22, that is, the first connecting platform 15 and the second connecting platform 16 are elastically connected.

[0051] By providing a hydraulic chuck including a mounting frame 26 , a second hydraulic cylinder 27 and a clamping plate 31 , the second hydraulic cylinder 27 is started to lower the clamping plate 31 and clamp it into the anti-slip groove 28 , so that the first connecting platform 15 is connected to the second connecting platform 16 .

[0052] Working principle: When in use, take the mobile vehicle 1 as a rail vehicle as an example. First, install tracks on both sides of the bridge deck, and install the mobile vehicle 1 on the tracks so that the mobile vehicle 1 can move along the tracks. The personnel enter the vertical arm 4 through the obstacle avoidance mechanism 2, climb down the ladder on the vertical arm 4, and walk to the horizontal arm 6. The lifting mechanism 3 controls the lifting of the horizontal arm 6 to adjust the distance between the horizontal wall and the bottom of the bridge, so that the personnel can observe and record the situation at the bottom of the bridge. As the mobile vehicle 1 continues to move, the inspection personnel can easily observe the entire bridge disease and record it. When encountering a lamp post, the obstacle avoidance mechanism 2 is used to avoid the lamp post, and the personnel can continue to work. When encountering a bridge pier, the horizontal rotation mechanism 5 controls the horizontal arm 6 to rotate 90 degrees to make it flush with the forward direction of the mobile vehicle 1. After the mobile vehicle 1 travels a certain distance and passes the bridge pier, the horizontal wall 6 is reversed and reset to continue the inspection operation. During the above obstacle avoidance process, the inspector does not need to return from the horizontal arm 6 to the bridge deck or the mobile vehicle 1, nor does he need to retract the vertical arm 4 and the horizontal arm 6, thereby greatly improving the inspection efficiency and increasing the inspection speed.

Claims

1. A retractable and rotatable bridge inspection mobile platform, characterized in that: include: A mobile carrier (1), an obstacle avoidance mechanism (2), a lifting mechanism (3), a vertical arm (4), a horizontal rotation mechanism (5) and a horizontal arm (6); The obstacle avoidance mechanism (2) is mounted on the mobile vehicle (1); the vertical arm (4) is mounted on one side of the obstacle avoidance mechanism (2); the vertical arm (4) is connected to the obstacle avoidance mechanism (2) via the lifting mechanism (3); the lifting mechanism (3) is used to lift the vertical arm (4); the horizontal rotation mechanism (5) is mounted at the bottom of the vertical arm (4); the horizontal arm (6) is connected to the horizontal rotation mechanism (5); and the rotation of the horizontal arm (6) is controlled by the horizontal rotation mechanism (5); The obstacle avoidance mechanism (2) comprises a first connecting platform (15) and a second connecting platform (16), a plurality of connecting components are provided between the first connecting platform (15) and the second connecting platform (16), the first connecting platform (15) is connected to the mobile vehicle (1), and the lifting mechanism (3) is provided on one side of the second connecting platform (16); The connection assembly comprises a first hydraulic cylinder (17) mounted on one side of the first connection platform (15), a hydraulic chuck being mounted on the end of the first hydraulic cylinder (17), and a fixing member (22) being mounted on one side of the second connection platform (16), the hydraulic chuck being connected to the fixing member (22).

2. The retractable and rotatable bridge inspection mobile platform according to claim 1, characterized in that: The horizontal rotation mechanism (5) comprises a driving motor (7) and a rotating shaft (8) mounted at the bottom of the vertical arm (4), wherein the driving motor (7) is used to drive the rotating shaft (8) to rotate, and the rotating shaft (8) is connected to the horizontal arm (6).

3. The retractable and rotatable bridge inspection mobile platform according to claim 1, characterized in that: A guide rail (10) and a telescopic arm (9) are installed in the horizontal arm (6); the telescopic arm (9) is connected to the guide rail (10); and a driving component is provided on the horizontal arm (6); the movement of the telescopic arm (9) is controlled by the driving component.

4. The retractable and rotatable bridge inspection mobile platform according to claim 3 is characterized in that: The driving assembly comprises two electric winding drums (11) mounted on a horizontal arm (6), a first steel wire rope (12) and a second steel wire rope (13) being wound on the two electric winding drums (11) respectively, a steering shaft (14) being mounted at the bottom of the horizontal arm (6), one end of the first steel wire rope (12) being directly connected to one end of the telescopic arm (9), one end of the second steel wire rope (13) passing around the steering shaft (14) and then folding back to be connected to one end of the telescopic arm (9).

5. The retractable and rotatable bridge inspection mobile platform according to claim 1, characterized in that: The lifting mechanism (3) comprises a gear shaft (21), the gear shaft (21) being mounted on one side of the second connecting platform (16), a vertical track (18) being mounted on one side of the second connecting platform (16), a lifting frame (19) being mounted on the vertical track (18), the lifting frame (19) being connected to the vertical arm (4), a rack (20) being mounted on one side of the lifting frame (19), and the rack (20) being meshed with the gear shaft (21).

6. The retractable and rotatable bridge inspection mobile platform according to claim 1, characterized in that: The hydraulic chuck comprises a mounting frame (26), the mounting frame (26) being connected to the first hydraulic cylinder (17), a clamping plate (31) being installed inside the mounting frame (26), a second hydraulic cylinder (27) being installed on the top of the mounting frame (26), and the second hydraulic cylinder (27) being connected to the clamping plate (31).

7. The retractable and rotatable bridge inspection mobile platform according to claim 1, characterized in that: The fixing member (22) comprises a connecting column (23), fixing plates (29) are installed at both ends of the connecting column (23), a clamping block (25) is installed on one of the fixing plates (29), an anti-slip groove (28) is provided on the clamping block (25), a plurality of guide rods (30) are installed between the two fixing plates (29), a spring (24) is sleeved on the connecting column (23), and the guide rods (30) and the connecting column (23) both pass through the second connecting platform (16).

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