Road and bridge maintenance device

Abstract

The present invention discloses a road and bridge maintenance device, including a driver, wherein the driver includes a corrugated airbag, the corrugated airbag is connected to a driving air pipe, the driving air pipe is connected to a driving air nozzle, the other end of the driving air nozzle is connected to a driving air cylinder, a rear walker is provided on the outside of the driving air cylinder, and a vent is provided on the right side surface of the driving air cylinder; a thrust is applied to a touch structure through an extrusion structure, and a front adsorption component can be caused to fall off from the surface of a bridge support through the touch structure, and at the same time, the front adsorption component will carry the detection mechanism away from the surface of the bridge support, and the above is repeated, so that the road and bridge maintenance device moves forward on the surface of the bridge support and realizes the purpose of one step and one inspection, and the inspection is more comprehensive, and at the same time, the area of ​​the bridge support surface away from the bridge deck can be inspected, and the inspection is more sufficient without missing any area, thereby improving the practicality of the road and bridge maintenance device.

Description

Technical Field

[0001] The present invention relates to the field of road and bridge maintenance equipment, and more particularly to a road and bridge maintenance device. Background Art

[0002] Road bridges are generally composed of several parts such as roadbed, pavement, bridges, tunnel projects and traffic engineering facilities. Bridge types are divided into railway bridges, highway bridges, road-rail dual-purpose bridges, pedestrian bridges, water transport bridges and other special bridges according to their uses; according to the obstacles they cross, there are river-spanning bridges, valley-spanning bridges, overpasses, viaducts, trestle bridges, etc.; according to the materials used, there are wooden bridges, steel bridges, reinforced concrete bridges, prestressed concrete bridges, masonry bridges, etc. Bridges need to be maintained regularly after they are put into use. Bridge maintenance has two meanings. In a narrow sense, bridge maintenance refers to the inspection, testing, evaluation, and repair and reinforcement work carried out to ensure that the bridge is always in normal working condition. In a broad sense, bridge maintenance also includes the work to ensure the bridge is in good working condition. Other indirect measures taken for the safe operation of beams, such as data and archive management, the construction of relevant systems and regulations, and the establishment of emergency plans. Steel structure corrosion is a core factor affecting bridge performance, safety and service life. Since the steel structure of the bridge is always exposed to the external environment, rain, snow and sunlight will affect its quality, performance and life. In order to spend less cost and maximize the life of the bridge and fully realize its value, anti-corrosion paint is evenly applied on the surface of the steel structure to create a long-term protection mechanism to ensure that the project party obtains benefits that meet its psychological expectations. In order to ensure the quality of maintenance, people usually use a coating thickness gauge to detect the coating thickness.

[0003] The existing coating thickness gauge is mainly composed of a main unit and a probe. When in use, the worker holds the main unit in one hand and the probe in the other, and then places the probe on the surface of the bridge steel structure for inspection. However, due to the height limitation of the workers, this inspection method can only inspect a very small part of the bridge steel structure, and the inspection is not comprehensive. Moreover, manual inspection is prone to missing some inspection areas. Therefore, there is an urgent need to design a road and bridge maintenance device. Summary of the Invention

[0004] 1. Technical problems to be solved

[0005] The existing coating thickness gauge in the prior art is mainly composed of a main unit and a probe. When in use, the worker holds the main unit in one hand and the probe in the other hand, and then places the probe against the surface of the bridge steel structure for inspection. However, due to the limitation of the worker's height, this inspection method can only inspect a very small part of the bridge steel structure, and the inspection is not comprehensive. In addition, manual inspection is prone to missing some inspection areas. The purpose of the present invention is to provide a road and bridge maintenance device, which can well solve the problems raised in the background technology.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A road and bridge maintenance device includes a driver, which includes a corrugated airbag, the corrugated airbag is connected to a driving air pipe, the driving air pipe is connected to a driving air nozzle, the other end of the driving air nozzle is connected to a driving air cylinder, a rear walker is provided on the outside of the driving air cylinder, a vent is provided on the right side surface of the driving air cylinder, a driving piston is slidably inserted into the inside of the driving air cylinder, a driving pipe is fixedly connected to the right side surface of the driving piston, the right end of the driving pipe extends to the outside of the driving air cylinder and is fixedly sleeved with a driving retaining ring, and a front walker is provided on the right end of the driving pipe.

[0009] Preferably, the rear walking device includes a rear carriage, a driving air cylinder is located inside the rear carriage, left and right ends of the driving air cylinder are respectively fixedly connected to the left and right side surfaces of the inner cavity of the rear carriage, the driving air nozzle is fixedly inserted into the left side surface of the rear carriage, the right end of the vent passes through the right side surface of the rear carriage, the driving pipe is movably inserted into the right side surface of the rear carriage and extends to its outside, the driving retaining ring contacts the right side surface of the rear carriage, four rear fixed-distance wheels are fixedly installed on the bottom surface of the rear carriage, and the four rear fixed-distance wheels are respectively distributed at the four corners of the bottom surface of the rear carriage, a socket hole is opened on the right side surface of the rear carriage, a pneumatic structure located below the driving air cylinder is provided between the left and right side surfaces of the inner cavity of the rear carriage, a hysteresis device is installed on the bottom surface of the inner cavity of the rear carriage, and an extrusion structure located at its right end is fixedly installed on the top surface of the inner cavity of the rear carriage.

[0010] Preferably, the pneumatic structure includes a pneumatic cylinder, the two ends of which are fixedly connected to the left and right side surfaces of the inner cavity of the rear compartment respectively, the front and rear surfaces of the pneumatic cylinder are fixedly connected with a pneumatic tube located at its left end, the pipeline of the pneumatic tube is connected with a pneumatic branch pipe, the left side of the inner cavity of the pneumatic cylinder is connected to a pneumatic piston through a pneumatic spring transmission, the pneumatic piston is slidably inserted into the interior of the pneumatic cylinder, the right side of the pneumatic piston is fixedly connected to a pneumatic hard tube located in the middle thereof, the right end of the pneumatic hard tube extends to the outside of the pneumatic cylinder and the rear compartment and is fixedly sleeved with a pneumatic baffle, the pneumatic baffle is in contact with the right side of the rear compartment, a constant pressure through hole is opened on the right side of the pneumatic cylinder, and the right end of the constant pressure through hole passes through the right side of the rear compartment.

[0011] Preferably, the hysteresis device includes a hysteresis plate, which is fixedly connected to the bottom surface of the rear compartment inner cavity, and the left end of the hysteresis plate is fixedly connected to the left side of the rear compartment inner cavity, and four hysteresis vertical holes are provided on the hysteresis plate, and the four hysteresis vertical holes are respectively distributed at the four corners of the hysteresis plate. A rear adsorption component is provided inside the hysteresis vertical hole, and a hysteresis cavity located on the left side of the hysteresis vertical hole is provided inside the hysteresis plate. The left side of the hysteresis cavity inner cavity is connected to a hysteresis piston through a hysteresis spring transmission, and the hysteresis piston is slidably inserted into the inside of the hysteresis cavity. A hysteresis head is fixedly connected to the right side of the hysteresis piston, and the right end of the hysteresis head extends The hysteresis plate is provided with linkage chambers on both sides of the hysteresis chamber, and a hysteresis sliding hole is provided on the inner wall of the linkage chamber. The linkage chamber is connected with the hysteresis chamber through the hysteresis sliding hole. A hysteresis slide is slidably inserted in the interior of the hysteresis sliding hole. One end of the hysteresis slide is fixedly connected to the surface of the hysteresis piston, and the other end of the hysteresis slide extends to the interior of the linkage chamber and is fixedly connected to the hysteresis slide column. A hysteresis push rod is movably inserted on the right side surface of the hysteresis plate, and the right end of the hysteresis push rod extends to the outside of the rear compartment. The hysteresis push rod is movably inserted in the interior of the linkage chamber, and the hysteresis slide column is fixedly sleeved on the outside of the hysteresis push rod.

[0012] Preferably, the rear adsorption assembly includes a rear adsorption cylinder, which is fixedly connected to the top surface of the hysteresis plate. There are four rear adsorption cylinders, which are respectively connected to the ends of two pneumatic tubes and two pneumatic branches. The top surface of the inner cavity of the rear adsorption cylinder is connected to the rear adsorption piston through a rear adsorption spring. The rear adsorption piston is slidably inserted into the interior of the rear adsorption cylinder. The rear adsorption tube located in the middle is fixedly inserted on the rear adsorption piston, and the bottom end of the rear adsorption tube passes through the hysteresis vertical hole. A ratchet-shaped ring groove is provided at the bottom of the rear adsorption tube on the surface thereof, and the ratchet-shaped ring groove is adapted to the lag head. The bottom end of the rear adsorption tube is fixedly connected to the rear suction cup, and the outer portion of the rear adsorption tube is movably sleeved with a guide tube located at the top thereof, and the top end of the guide tube is fixedly connected to the top surface of the inner cavity of the rear adsorption cylinder, and a rear bending tube is fixedly inserted on the top surface of the rear adsorption cylinder, and the rear bending tube is connected to the guide tube, and the pipeline of the rear bending tube is connected to the rear control valve, and the other end of the rear bending tube is connected to the rear constant pressure valve.

[0013] Preferably, the extrusion structure includes an extruded flat tube, which is fixedly connected to the top surface of the inner cavity of the rear compartment, and an extruded flat plate is slidably inserted into the interior of the extruded flat tube, and the bottom end of the extruded flat plate extends to the outside of the extruded flat tube and is fixedly connected to a sloped flat plate, and the bottom end of the sloped flat plate is fixedly connected to an extrusion strip, and the bottom end of the extrusion strip extends from the bottom surface of the rear compartment and is fixedly connected to the top surface of the corresponding rear suction cup.

[0014] Preferably, the front walking device includes a front carriage, the left side of the front carriage is fixedly connected to the right ends of the driving pipe and the pneumatic hard pipe, the right end of the hysteresis push rod is in contact with the left side of the front carriage, four front fixed-distance wheels are fixedly connected to the bottom surface of the front carriage, and the four front fixed-distance wheels are respectively located at the four corners of the bottom surface of the front carriage, a collector located at its right end is fixedly installed on the bottom surface of the inner cavity of the front carriage, and a guide wheel located at its left end is fixedly installed on the top surface of the inner cavity of the front carriage, and a traction line is wound around the outside of the guide wheel, and one end of the traction line extends from the left side of the front carriage. It comes and extends to the interior of the rear compartment and is connected to the rear constant pressure valve. A reinforcement block located on the right side of the guide wheel is fixedly connected to the top surface of the front compartment inner cavity. A lifting structure located in the middle is installed on the bottom surface of the front compartment inner cavity. A front adsorption assembly is installed on the top of the lifting structure. The front adsorption assembly is connected to the other end of the traction line. A delay device located on the left side of the lifting structure is fixedly installed on the bottom surface of the front compartment inner cavity. A touch structure located at its right end is fixedly installed on the top surface of the front compartment inner cavity. The touch structure is adapted to the front constant pressure valve. A detection mechanism is provided on the right side surface of the front compartment.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The driver can apply a rightward thrust to the front walker with the rear walker as the base point, so that the front walker moves to the right, and the front walker can move the detection mechanism to the right, so that the detection mechanism can advance forward on the surface of the bridge support. The delay device automatically releases the lifting structure when the distance between the rear walker and the front walker reaches a maximum value, so as to release the restriction on the front adsorption component, so that the front adsorption component can move on its own. After the action, the front adsorption component is adsorbed on the surface of the bridge support, and at the same time, the front adsorption component will move the detection mechanism to the surface of the bridge support, so that the detection mechanism is against the surface of the bridge support for detection. The front walker and the front adsorption component can separate the rear adsorption component from the surface of the bridge support, ensuring that the rear walker can move forward on the surface of the bridge support with the front walker as the base point. The pneumatic structure can enable the rear walker to move forward on the surface of the bridge support. The walker approaches the front walker and applies air pressure stress to the lifting structure and the rear adsorption component. When the distance between the rear walker and the front walker reaches a minimum, the rear adsorption component is automatically released through the hysteresis device. After the release, the rear adsorption component will move under the action of the air pressure stress and adsorb on the surface of the bridge support. The movement of the rear adsorption component will bring the extrusion structure to move synchronously, and the extrusion structure will apply thrust to the touch structure. The touch structure can make the front adsorption component fall off from the surface of the bridge support. At the same time, the front adsorption component will bring the detection mechanism away from the surface of the bridge support. Repeat the above, so that the road and bridge maintenance device can move forward on the surface of the bridge support and achieve the purpose of one step and one inspection. The inspection is more comprehensive, and the area of ​​the bridge support surface away from the bridge deck can be inspected. The inspection is more sufficient and there will be no missed areas, which improves the practicality of the road and bridge maintenance device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the structure of the mid-rear walker;

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the internal structure of the mid-rear walker;

[0021] Figure 4 For the present invention Figure 3 Schematic diagram of the internal structure of the middle drive cylinder;

[0022] Figure 5 For the present invention Figure 3 Schematic diagram of the aerodynamic structure;

[0023] Figure 6 For the present invention Figure 5Schematic diagram of the internal structure;

[0024] Figure 7 For the present invention Figure 3 Schematic diagram of the internal structure of the mid-rear adsorption component;

[0025] Figure 8 For the present invention Figure 7 Cross-section at AA in the middle;

[0026] Figure 9 For the present invention Figure 3 Schematic diagram of the internal structure of the extrusion structure;

[0027] Figure 10 For the present invention Figure 2 Schematic diagram of the internal structure of the mid-front walker;

[0028] Figure 11 For the present invention Figure 10 Schematic diagram of the internal structure of the middle lift structure;

[0029] Figure 12 For the present invention Figure 10 Schematic diagram of the internal structure of the delay device;

[0030] Figure 13 For the present invention Figure 10 Schematic diagram of the internal structure of the front adsorption component;

[0031] Figure 14 For the present invention Figure 10 Schematic diagram of the internal structure of the middle touch structure;

[0032] Figure 15 For the present invention Figure 2 Schematic diagram of the internal structure of the testing agency;

[0033] Figure 16 For the present invention Figure 3 Schematic diagram of the internal structure of the center-rear constant pressure valve;

[0034] Figure 17 For the present invention Figure 10 Schematic diagram of the internal structure of the front constant pressure valve;

[0035] Figure 18 For the present invention Figure 17 Top view of the center front constant pressure rod.

[0036] Description of the numbers in the figure:

[0037] 00. Bridge support; 1. Driver; 01. Bellows; 02. Driving air pipe; 03. Driving air nozzle; 04. Driving air cylinder; 05. Vent; 06. Driving piston; 07. Driving pipe; 08. Driving retaining ring; 2. Rear walker; 21. Rear carriage; 22. Rear distance wheel; 23. Socket; 3. Front walker; 31. Front carriage; 32. Front distance wheel; 33. Collector; 34. Guide wheel; 35. Traction line; 36. Reinforcement block; 4. Detection mechanism; 41. Detection vertical hole; 42. U-shaped bar; 43. Extension bar; 44. Detection cylinder; 45. Buffer spring; 46. Detection probe; 5. Pneumatic structure; 51. Pneumatic cylinder; 52. Pneumatic tube; 53. Pneumatic branch pipe; 54. Pneumatic spring; 55. Pneumatic piston; 56. Pneumatic hard pipe; 57. Pneumatic baffle; 58. Constant pressure through hole; 6. Hysteresis device; 601. Hysteresis plate; 602. Hysteresis vertical hole; 603. Hysteresis chamber; 604. Hysteresis spring; 605. Hysteresis piston; 606. Hysteresis head; 607. Linkage chamber; 608. Hysteresis sliding hole; 609. Hysteresis slide; 610. Hysteresis slide column; 611. Hysteresis push rod; 7. Post-adsorption assembly; 701. Post-adsorption cylinder; 702. Post-adsorption spring; 703. Post-adsorption piston; 704. Post-adsorption tube; 705. Ratchet ring groove; 706. Post-suction cup; 707. Guide tube; 708. Post-bend 10. Rear constant pressure valve; 709. Rear control valve; 710. Rear constant pressure valve; 7101. Rear constant pressure column; 7102. Rear constant pressure chamber; 7103. Rear constant pressure cone chamber; 7104. Rear constant pressure tube; 7105. Rear constant pressure spring; 7106. Rear constant pressure cone plug; 8. Extrusion structure; 81. Extrusion flat tube; 82. Extrusion flat plate; 83. Inclined flat plate; 84. Extrusion strip; 9. Lifting structure; 91. Lifting cylinder; 92. Lifting air pipe; 93. Lifting piston; 94. Lifting column; 95. Lifting tray; 10. Delay device; 101. Delay column; 102. Delay chamber; 103. Delay spring; 104. Delay push plate; 105. Delay inclined head; 106. Delay line; 11. , front adsorption assembly; 111, front adsorption cylinder; 112, front adsorption spring; 113, front adsorption disc; 114, front adsorption tube; 115, front adsorption disc; 116, front bent pipe; 117, front control valve; 118, front constant pressure valve; 1181, front constant pressure column; 1182, front constant pressure cavity; 1183, front constant pressure cone cavity; 1184, front constant pressure tube; 1185, front constant pressure spring; 1186, front constant pressure cone plug; 1187, front constant pressure rod; 1188, front constant pressure cross bar; 12, touch structure; 121, touch flat tube; 122, touch piston; 123, touch track hole; 124, touch vertical bar; 125, touch bending bar. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0039] See also Figure 1-18 , a road and bridge maintenance device, including a driver 1, the driver 1 includes a corrugated airbag 01, the corrugated airbag 01 is connected to a driving air pipe 02, the driving air pipe 02 is connected to a driving air nozzle 03, the other end of the driving air nozzle 03 is connected to a driving air cylinder 04, the outside of the driving air cylinder 04 is provided with a rear walker 2, the right side surface of the driving air cylinder 04 is provided with a vent hole 05, the inside of the driving air cylinder 04 is slidably plugged with a driving piston 06, the right side surface of the driving piston 06 is fixedly connected with a driving pipe 07, the right end of the driving pipe 07 extends to the outside of the driving air cylinder 04 and is fixedly sleeved with a driving retaining ring 08, and the right end of the driving pipe 07 is provided with a front walker 3. After the detection is completed, the rear walker 2 and the front walker 3 can be directly applied with a pulling force through the driving air pipe 02 to peel the rear walker 2 and the front walker 3 from the surface of the bridge support 00. The road and bridge maintenance device is set on the surface of the bridge support 00 in the form of a suction cup, so that it can be applied to various inclined surfaces without falling.

[0040] The rear walker 2 includes a rear compartment 21, a driving air cylinder 04 is located inside the rear compartment 21, the left and right ends of the driving air cylinder 04 are respectively fixedly connected to the left and right side surfaces of the inner cavity of the rear compartment 21, the driving air nozzle 03 is fixedly plugged into the left side surface of the rear compartment 21, the right end of the vent 05 passes through the right side surface of the rear compartment 21, the driving pipe 07 is movably plugged into the right side surface of the rear compartment 21 and extends to the outside thereof, and the driving retaining ring 08 is in contact with the right side surface of the rear compartment 21. Four rear fixed-distance wheels 22 are fixedly installed on the bottom surface of the rear compartment 21. The four rear fixed-distance wheels 22 are respectively distributed at the four corners of the bottom surface of the rear compartment 21. A socket hole 23 is opened on the right side surface of the rear compartment 21. A pneumatic structure 5 located below the driving air cylinder 04 is provided between the left and right side surfaces of the inner cavity of the rear compartment 21. A hysteresis device 6 is installed on the bottom surface of the inner cavity of the rear compartment 21. An extrusion structure 8 located at its right end is fixedly installed on the top surface of the inner cavity of the rear compartment 21.

[0041] The pneumatic structure 5 includes a pneumatic cylinder 51, the two ends of which are fixedly connected to the left and right side surfaces of the inner cavity of the rear compartment 21 respectively. The front and rear surfaces of the pneumatic cylinder 51 are fixedly connected with a pneumatic tube 52 located at its left end, and the pipeline of the pneumatic tube 52 is connected with a pneumatic branch pipe 53. The left side of the inner cavity of the pneumatic cylinder 51 is connected to a pneumatic piston 55 through a pneumatic spring 54. The pneumatic piston 55 is slidably inserted into the interior of the pneumatic cylinder 51. The right side of the pneumatic piston 55 is fixedly connected with a pneumatic hard tube 56 located in the middle thereof. The pneumatic hard tube 56 passes through the pneumatic piston 55. The right end of the pneumatic hard tube 56 extends to the outside of the pneumatic cylinder 51 and the rear compartment 21 and is fixedly sleeved with a pneumatic baffle 57. The pneumatic baffle 57 contacts the right side of the rear compartment 21. A constant pressure through hole 58 is opened on the right side of the pneumatic cylinder 51, and the right end of the constant pressure through hole 58 passes through the right side of the rear compartment 21.

[0042] The hysteresis device 6 includes a hysteresis plate 601, which is fixedly connected to the bottom surface of the inner cavity of the rear compartment 21, and the left end of the hysteresis plate 601 is fixedly connected to the left side of the inner cavity of the rear compartment 21. Four hysteresis vertical holes 602 are provided on the hysteresis plate 601, and the four hysteresis vertical holes 602 are respectively distributed at the four corners of the hysteresis plate 601. The interior of the hysteresis vertical hole 602 is provided with a rear adsorption component 7. The interior of the hysteresis plate 601 is provided with a hysteresis cavity 603 located on the left side of the hysteresis vertical hole 602. The left side of the inner cavity of the hysteresis cavity 603 is connected to the hysteresis piston 605 through a hysteresis spring 604. The hysteresis piston 605 is slidably inserted into the interior of the hysteresis cavity 603. A hysteresis head 606 is fixedly connected to the right side of the hysteresis piston 605, and the right end of the hysteresis head 606 extends to the hysteresis vertical hole 6 02, the interior of the hysteresis plate 601 is provided with a linkage cavity 607 located on both sides of the hysteresis cavity 603, and a hysteresis slide hole 608 is provided on the inner wall of the linkage cavity 607. The linkage cavity 607 is connected with the hysteresis cavity 603 through the hysteresis slide hole 608, and a hysteresis slide plate 609 is slidably inserted in the interior of the hysteresis slide hole 608. One end of the hysteresis slide plate 609 is fixedly connected to the surface of the hysteresis piston 605, and the other end of the hysteresis slide plate 609 extends to the interior of the linkage cavity 607 and is fixedly connected to the hysteresis slide column 610. A hysteresis push rod 611 is movably inserted on the right side surface of the hysteresis plate 601, and the right end of the hysteresis push rod 611 extends to the outside of the rear compartment 21. The hysteresis push rod 611 is movably inserted in the interior of the linkage cavity 607, and the hysteresis slide column 610 is fixedly sleeved on the outside of the hysteresis push rod 611.

[0043] The rear adsorption assembly 7 includes a rear adsorption cylinder 701, which is fixedly connected to the top surface of the hysteresis plate 601. There are four rear adsorption cylinders 701, which are respectively connected to the ends of two pneumatic tubes 52 and two pneumatic branches 53. The top surface of the inner cavity of the rear adsorption cylinder 701 is connected to the rear adsorption piston 703 through the rear adsorption spring 702. The rear adsorption piston 703 is slidably inserted into the interior of the rear adsorption cylinder 701. The rear adsorption pipe 704 located in the middle is fixedly inserted on the rear adsorption piston 703. The bottom end of the rear adsorption pipe 704 passes through the hysteresis vertical hole 602. The rear adsorption pipe 70 4 is provided with a ratchet-shaped annular groove 705 at its bottom, and the ratchet-shaped annular groove 705 is adapted to the lag head 606. The bottom end of the rear adsorption tube 704 is fixedly connected to the rear suction cup 706, and the outer part of the rear adsorption tube 704 is movably sleeved with a guide tube 707 located at its top. The top end of the guide tube 707 is fixedly connected to the top surface of the inner cavity of the rear adsorption cylinder 701, and a rear bending tube 708 is fixedly inserted on the top surface of the rear adsorption cylinder 701. The rear bending tube 708 is connected to the guide tube 707, and the pipeline of the rear bending tube 708 is connected to a rear control valve 709, and the other end of the rear bending tube 708 is connected to a rear constant pressure valve 710.

[0044] The rear constant pressure valve 710 includes a rear constant pressure column 7101, a rear constant pressure chamber 7102 is opened inside the rear constant pressure column 7101, and a rear constant pressure conical chamber 7103 is opened on the left side of the inner cavity of the rear constant pressure chamber 7102. A rear constant pressure tube 7104 located at its left end is fixedly inserted on the rear constant pressure column 7101, and the rear constant pressure tube 7104 is connected to the rear constant pressure conical chamber 7103. The bottom end of the rear constant pressure tube 7104 is simultaneously connected to the end parts of the four rear bending tubes 708. The right side of the inner cavity of the rear constant pressure chamber 7102 is connected to the rear constant pressure cone plug 7106 through the rear constant pressure spring 7105. The rear constant pressure cone plug 7106 is slidably inserted into the interior of the rear constant pressure conical chamber 7103 and blocks the rear constant pressure tube 7104.

[0045] The extrusion structure 8 includes an extruded flat tube 81, which is fixedly connected to the top surface of the inner cavity of the rear compartment 21. An extruded flat plate 82 is slidably inserted into the interior of the extruded flat tube 81. The bottom end of the extruded flat plate 82 extends to the outside of the extruded flat tube 81 and is fixedly connected to a sloped flat plate 83. The bottom end of the sloped flat plate 83 is fixedly connected to an extrusion strip 84. The bottom end of the extrusion strip 84 extends from the bottom surface of the rear compartment 21 and is fixedly connected to the top surface of the corresponding rear suction cup 706.

[0046] The front walker 3 includes a front carriage 31, the left side of the front carriage 31 is fixedly connected to the right ends of the driving pipe 07 and the pneumatic hard pipe 56, the right end of the hysteresis push rod 611 is in contact with the left side of the front carriage 31, and four front fixed-distance wheels 32 are fixedly connected to the bottom surface of the front carriage 31. The four front fixed-distance wheels 32 are respectively located at the four corners of the bottom surface of the front carriage 31, and a collector 33 located at its right end is fixedly installed on the bottom surface of the inner cavity of the front carriage 31, and a guide wheel 34 located at its left end is fixedly installed on the top surface of the inner cavity of the front carriage 31. A traction line 35 is wound around the outside of the guide wheel 34, and one end of the traction line 35 extends from the left side of the front carriage 31 and extends to the interior of the rear carriage 21 and is connected to the rear constant pressure valve 710. The end of the traction line 35 extends to the rear constant pressure valve 710. The interior of the pressure chamber 7102 is fixedly connected to the right side of the rear constant pressure cone plug 7106, the top surface of the inner cavity of the front car 31 is fixedly connected to the reinforcement block 36 located on the right side of the wire wheel 34, the bottom surface of the inner cavity of the front car 31 is installed with a lifting structure 9 located in the middle thereof, the top of the lifting structure 9 is installed with a front adsorption component 11, the front adsorption component 11 is connected to the other end of the traction line 35, the bottom surface of the inner cavity of the front car 31 is fixedly installed with a delay device 10 located on the left side of the lifting structure 9, the top surface of the inner cavity of the front car 31 is fixedly installed with a trigger structure 12 located at its right end, a battery is provided inside the collector 33, the collector 33 is wirelessly connected to the external receiving terminal, the trigger structure 12 is adapted to the front constant pressure valve 118, and a detection mechanism 4 is provided on the right side surface of the front car 31.

[0047] The lifting structure 9 includes a lifting cylinder 91, which is fixedly connected to the bottom surface of the inner cavity of the front compartment 31. The left side surface of the lifting cylinder 91 is fixedly connected to a lifting air pipe 92 located at its bottom end. The other end of the lifting air pipe 92 is connected to the pneumatic hard pipe 56. A lifting piston 93 is slidably inserted into the interior of the lifting air pipe 92. A lifting column 94 is fixedly connected to the top surface of the lifting piston 93. The top end of the lifting column 94 extends to the outside of the lifting cylinder 91 and is fixedly connected to a lifting tray 95.

[0048] The delay device 10 includes a delay column 101, which is fixedly connected to the bottom surface of the inner cavity of the front car 31, and the lifting air pipe 92 is fixedly inserted into the interior of the delay column 101. The interior of the delay column 101 is provided with a delay cavity 102 located at its top. The left side of the inner cavity of the delay cavity 102 is connected to a delay push plate 104 through a delay spring 103. The delay push plate 104 is slidably inserted into the interior of the delay cavity 102. The right side of the delay push plate 104 is fixedly connected to a delay bevel head 105. The right end of the delay bevel head 105 extends to the outside of the delay column 101 and contacts and connects with the bottom surface of the lifting tray 95. The left side of the delay push plate 104 is fixedly connected to a delay line 106. The other end of the delay line 106 extends from the surface of the front car 31 and is fixedly connected to the surface of the rear car 21.

[0049] The front adsorption assembly 11 includes a front adsorption cylinder 111, which is fixedly connected to the bottom surface of the inner cavity of the front compartment 31. There are four front adsorption cylinders 111, which are respectively located at four rotating parts on the bottom surface of the inner cavity of the front compartment 31. The top of the front adsorption cylinder 111 is open. The bottom surface of the inner cavity of the front adsorption cylinder 111 is connected to the front adsorption disc 113 through the front adsorption spring 112. The front adsorption disc 113 is fixedly plugged with a front adsorption tube 114. The bottom end of the adsorption tube 114 extends to the outside of the front adsorption cylinder 111 and the front carriage 31 and is fixedly connected to the front adsorption disk 115. The top end of the front adsorption tube 114 is fixedly connected to the front bend pipe 116. The pipeline of the front bend pipe 116 is fixedly connected to the front control valve 117. The end of the front bend pipe 116 is fixedly connected to the top surface of the lifting tray 95. The end of the front bend pipe 116 is fixedly connected to the front constant pressure valve 118. The end of the traction line 35 is fixedly connected to the top surface of a front adsorption disk 113.

[0050] The front constant pressure valve 118 includes a front constant pressure column 1181, a front constant pressure chamber 1182 is provided inside the front constant pressure column 1181, a front constant pressure cone chamber 1183 is provided on the left side of the inner cavity of the front constant pressure chamber 1182, and a front constant pressure tube 1184 is fixedly connected to the front constant pressure column 1181 at its left end. The front constant pressure tube 1184 is connected to the front constant pressure cone chamber 1183, and the bottom end of the front constant pressure tube 1184 is simultaneously connected to the ends of the four front bends 116. The right side of the inner cavity of the front constant pressure chamber 1182 is connected to the front constant pressure cone plug 1186 through the front constant pressure spring 1185. The front constant pressure cone plug 1186 is movably inserted into the interior of the front constant pressure cone chamber 1183 and blocks the front constant pressure tube 1184. The right side of the front constant pressure cone plug 1186 is fixedly connected to the front constant pressure rod 1187. The right end of the front constant pressure rod 1187 extends to the outside of the front constant pressure column 1181 and is fixedly connected to the front constant pressure cross bar 1188.

[0051] The trigger structure 12 includes a trigger flat tube 121, which is fixedly connected to the top surface of the inner cavity of the front compartment 31. A trigger piston 122 is slidably inserted into the interior of the trigger flat tube 121. A trigger track hole 123 is opened on the bottom surface of the trigger flat tube 121. A trigger vertical bar 124 is fixedly connected to the bottom surface of the trigger piston 122. The bottom end of the trigger vertical bar 124 passes through the trigger track hole 123 and extends to the outside thereof. The trigger vertical bar 124 is located at the front compartment 31. The left side of the constant pressure cross bar 1188 is placed and in contact with each other. The surface of the touch vertical bar 124 is fixedly connected with a touch bending bar 125. The touch bending bar 125 is movably inserted into the interior of the reinforcement block 36. The left end of the touch bending bar 125 extends from the left side of the front compartment 31 and passes through the socket hole 23 and extends to the interior of the rear compartment 21. The end of the touch bending bar 125 is adapted to the extrusion flat plate 82, the inclined flat plate 83, and the extrusion bar 84.

[0052] The detection mechanism 4 includes a detection vertical hole 41, which is opened on the right side of the front carriage 31. A U-shaped bar 42 is slidably inserted into the interior of the detection vertical hole 41. The end of the U-shaped bar 42 is fixedly connected to the right side of the corresponding front adsorption disc 113. An extension bar 43 is fixedly connected to the right side of the U-shaped bar 42. The right end of the extension bar 43 is fixedly connected to a detection cylinder 44. The top surface of the inner cavity of the detection cylinder 44 is connected to a detection probe 46 through a buffer spring 45. The detection probe 46 is slidably inserted into the interior of the detection cylinder 44, and the detection probe 46 is electrically connected to the collector 33.

[0053] Working principle:

[0054] First, step on the corrugated airbag 01, and then the air pressure inside the corrugated airbag 01 increases, and then the cavity inside the driving cylinder 04 located on the left side of the driving piston 06 is connected to the corrugated airbag 01 through the driving air nozzle 03 and the driving air pipe 02. Then the air pressure in the cavity inside the driving cylinder 04 located on the left side of the driving piston 06 increases, and then the driving piston 06 moves to the right with the front carriage 31 through the driving pipe 07 under the action of the air pressure. At the same time, the front carriage 31 pulls the pneumatic piston 55 through the pneumatic hard pipe 56, and then the pneumatic piston 55 moves to the right and pulls the pneumatic spring 54, so that the air pressure in the cavity inside the pneumatic cylinder 51 located on the left side of the pneumatic piston 55 gradually decreases, and then the air pressure inside the rear suction cylinder 701 and the lifting cylinder 91 decreases. The disk 706 is adsorbed on the surface of the bridge support 00 and will not fall off. Then the pneumatic spring 54 is elastically stretched, and the elastic potential energy increases. Then the distance between the rear car 21 and the front car 31 becomes larger. Then the end of the lag push rod 611 is separated from the surface of the front car 31. Then the lag piston 605 moves to the right with the lag head 606 under the elastic repulsive force of the lag spring 604. Then the end of the lag head 606 is pressed on the surface of the rear adsorption tube 704. Then the delay line 106 is gradually straightened. Then the delay line 106 moves to the left with the delay bevel head 105 through the delay push plate 104. Then the delay bevel head 105 slides to the left on the bottom surface of the lifting tray 95. Then the delay bevel head 105 is separated from the lifting tray 95. At this time, the driving piston 06 moves to the right end point inside the driving air cylinder 04, and then the front adsorption disc 113 moves downward with the front adsorption disc 115 through the front adsorption tube 114 under the action of the elastic tension of the front adsorption spring 112, and then the bottom end of the front adsorption disc 115 contacts the surface of the bridge support 00, and then the corresponding front adsorption disc 113 moves downward with the detection cylinder 44, the buffer spring 45, and the detection probe 46 through the U-shaped bar 42 and the extension bar 43, and then the front adsorption disc 115 elastically deforms and applies pressure to the gas inside it, and then the air inside the front adsorption disc 115 is discharged from the front adsorption tube 114, the front bend 116, and the front control valve 117, so that the front adsorption disc 115 is adsorbed on the bridge support 00 surface, then the bottom end of the detection probe 46 is against the surface of the bridge support 00, and then the detection probe 46 detects the coating thickness on the surface of the bridge support 00 and sends the detection data to the collector 33, and then the collector 33 transmits the monitoring data to the receiving terminal, people observe the coating thickness data through the receiving terminal, and then the corresponding front adsorption disc 113 pulls the traction line 35, and then the traction line 35 pulls the rear constant pressure cone plug 7106, and then the rear constant pressure cone plug 7106 is pulled out from the rear constant pressure cone cavity 7103, and then the rear constant pressure tube 7104 is turned on, and then the external air enters the rear suction cup 706 from the rear constant pressure tube 7104, the rear bending tube 708, the guide tube 707, and the rear adsorption tube 704,Then the rear suction cup 706 is no longer adsorbed on the surface of the bridge support 00, and then the rear adsorption piston 703 moves upward with the ratchet ring groove 705 and the rear suction cup 706 through the rear adsorption tube 704 under the action of the elastic lifting force of the rear adsorption spring 702, and then the rear suction cup 706 is separated from the bridge support 00, and then the rear adsorption piston 703 contacts the guide tube 707. At this time, the lag head 606 is aligned with the ratchet ring groove 705, and then the lag head 606 is inserted into the ratchet ring groove 705 under the action of the elastic force of the lag spring 604, and the rear adsorption tube 704 is stuck, and then the foot is lifted, and then the corrugated airbag 01 elastically recovers, and then the corrugated airbag 01, the driving air pipe 02, the driving air nozzle 03, and the driving air cylinder 04 are located inside the driving airbag. The air pressure in the cavity on the left side of the piston 06 decreases, and then the pneumatic spring 54 applies a pulling force to the right to the rear carriage 21 through the pneumatic cylinder 51 under the action of its own elastic force, and then the rear carriage 21 moves to the right and gradually approaches the front carriage 31, and then the traction line 35 relaxes, and then the rear constant pressure cone plug 7106 is inserted into the rear constant pressure cone cavity 7103 under the action of the elastic force of the rear constant pressure spring 7105, blocking the rear constant pressure tube 7104, and then the cavity on the left side of the pneumatic piston 55 inside the pneumatic cylinder 51 becomes smaller and smaller, and the air pressure becomes greater and greater, and then the air pressure in the lifting air pipe 92, the cavity below the lifting piston 93 inside the lifting cylinder 91, and the rear adsorption cylinder 701 gradually increases, and then the rear adsorption piston 703 is subjected to downward air pressure stress, lifting the piston 93 is subjected to upward air pressure stress, and then the lag push rod 611 contacts the front car 31, and then the lag push rod 611 is pushed to the left, and then the lag push rod 611 moves to the left with the lag head 606 through the lag slide 610, the lag slide 609, and the lag piston 605, and then the lag head 606 is pulled out from the inside of the ratchet ring groove 705, and then the rear adsorption piston 703 moves downward with the rear suction cup 706 through the rear adsorption tube 704 under the action of air pressure, and then the rear suction cup 706 is pressed on the surface of the bridge support 00, and then the air inside the rear suction cup 706 is discharged from the rear adsorption tube 704, the guide tube 707, the rear bending tube 708, and the rear control valve 709, and then the rear suction cup 706 is adsorbed on the bridge On the surface of the support member 00, the corresponding rear suction cup 706 pulls the extrusion bar 84, and then the extrusion bar 84 moves downward with the inclined flat plate 83 and the extrusion flat plate 82, and then the end of the trigger bending bar 125 slides upward on the surfaces of the extrusion bar 84, the inclined flat plate 83, and the extrusion flat plate 82 in turn, and then the inclined flat plate 83 and the extrusion flat plate 82 apply a rightward thrust to the trigger bending bar 125, and then the trigger bending bar 125 moves the trigger vertical bar 124 to the right, and then the trigger vertical bar 124 pushes the front constant pressure cross bar 1188 to the right, and then the front constant pressure cross bar 1188 moves the front constant pressure rod 1187 to the right, and then the front constant pressure rod 1187 pulls the front constant pressure cone plug 1186 to the right, and then the front constant pressure tube 1184 is turned on.Then the external air enters the front adsorption disc 115 from the front constant pressure pipe 1184, the front bend pipe 116, and the front adsorption pipe 114. Then the adsorption force between the front adsorption disc 115 and the bridge support 00 gradually decreases. At the same time, the front adsorption disc 115 elastically recovers. Then, the front adsorption disc 113 pulls the front adsorption disc 115 through the front adsorption pipe 114 under the action of the elastic force of the front adsorption spring 112. The front adsorption disc 115 elastically stretches, and then the front adsorption disc 113 passes through the U-shaped bar 42 and the extension bar 43. , the detection cylinder 44, the buffer spring 45 moves the detection probe 46 upward, and then the detection probe 46 is separated from the surface of the bridge support 00, and then the front adsorption disk 115 is no longer adsorbed on the surface of the bridge support 00, and then the lifting piston 93 moves upward with the lifting tray 95 through the lifting column 94 under the action of air pressure, and then the lifting tray 95 moves upward with the front bend 116 and the front adsorption tube 114 with the front adsorption disc 113 and the front adsorption disc 115, and then the front adsorption disc 113 pulls the front The adsorption spring 112 is placed, so that the front adsorption spring 112 is elastically stretched, the elastic potential energy increases, and then the lifting tray 95 contacts the inclined surface of the delay bevel head 105 and applies pressure to it, then the delay bevel head 105 moves to the left, and then the delay bevel head 105 slides on the side of the lifting tray 95, and then the lifting tray 95 moves to the top of the delay bevel head 105, and then the delay push plate 104 pops out with the delay bevel head 105 under the action of the elastic force of the delay spring 103, and then the delay bevel head 105 is stuck in the lifting tray 95, the lifting piston 93 moves upward to the extreme position, and then the front adsorption plate 115 is reset, and then the front walker 3 is released. Then the corrugated airbag 01 is stepped on, and the above is repeated, so that the front walker 3 moves forward once. The detection mechanism 4 will perform a test on the coating on the surface of the bridge support 00 until the test of one bridge steel structure is completed. Then, the road bridge maintenance device is placed on the other side of the same bridge steel structure or on the surface of another bridge steel structure for testing until the test is completed.

[0055] The above description is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved conception of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A road and bridge maintenance device, comprising a driver (1), characterized in that: The driver (1) includes a corrugated airbag (01), the corrugated airbag (01) is connected to a driving air pipe (02), the driving air pipe (02) is connected to a driving air nozzle (03), the other end of the driving air nozzle (03) is connected to a driving air cylinder (04), the outside of the driving air cylinder (04) is provided with a rear walker (2), a vent hole (05) is provided on the right side surface of the driving air cylinder (04), a driving piston (06) is slidably inserted into the inside of the driving air cylinder (04), a driving pipe (07) is fixedly connected to the right side surface of the driving piston (06), the right end of the driving pipe (07) extends to the outside of the driving air cylinder (04) and is fixedly sleeved with a driving retaining ring (08), and the right end of the driving pipe (07) is provided with a front walker (3); The rear walking device (2) includes a rear compartment (21), a driving air cylinder (04) is located inside the rear compartment (21), the left and right ends of the driving air cylinder (04) are respectively fixedly connected to the left and right side surfaces of the inner cavity of the rear compartment (21), the driving air nozzle (03) is fixedly plugged into the left side surface of the rear compartment (21), the right end of the vent (05) passes through the right side surface of the rear compartment (21), the driving pipe (07) is movably plugged into the right side surface of the rear compartment (21) and extends to the outside thereof, and the driving retaining ring (08) is connected to the right side surface of the rear compartment (21). Contact, four rear fixed-distance wheels (22) are fixedly installed on the bottom surface of the rear compartment (21), and the four rear fixed-distance wheels (22) are respectively distributed at the four corners of the bottom surface of the rear compartment (21). A socket hole (23) is opened on the right side surface of the rear compartment (21), and a pneumatic structure (5) located below the driving air cylinder (04) is provided between the left and right sides of the inner cavity of the rear compartment (21). A hysteresis device (6) is installed on the bottom surface of the inner cavity of the rear compartment (21), and an extrusion structure (8) located at its right end is fixedly installed on the top surface of the inner cavity of the rear compartment (21); The pneumatic structure (5) includes a pneumatic cylinder (51), the two ends of the pneumatic cylinder (51) are respectively fixedly connected to the left and right side surfaces of the inner cavity of the rear compartment (21), the front and rear sides of the pneumatic cylinder (51) are fixedly connected to a pneumatic tube (52) located at the left end thereof, the pipeline of the pneumatic tube (52) is connected to a pneumatic branch pipe (53), the left side of the inner cavity of the pneumatic cylinder (51) is connected to a pneumatic piston (55) through a pneumatic spring (54), and the pneumatic piston (55) is slidably inserted into the pneumatic cylinder. Inside the pneumatic cylinder (51), a pneumatic hard tube (56) located in the middle thereof is fixedly connected to the right side surface of the pneumatic piston (55), the right end of the pneumatic hard tube (56) extends to the outside of the pneumatic cylinder (51) and the rear compartment (21) and is fixedly sleeved with a pneumatic baffle (57), the pneumatic baffle (57) contacts the right side surface of the rear compartment (21), a constant pressure through hole (58) is opened on the right side surface of the pneumatic cylinder (51), and the right end of the constant pressure through hole (58) passes through the right side surface of the rear compartment (21); The hysteresis device (6) includes a hysteresis plate (601), which is fixedly connected to the bottom surface of the inner cavity of the rear compartment (21), and the left end of the hysteresis plate (601) is fixedly connected to the left side of the inner cavity of the rear compartment (21). Four hysteresis vertical holes (602) are opened on the hysteresis plate (601), and the four hysteresis vertical holes (602) are respectively distributed at four corners on the hysteresis plate (601). The rear adsorption components are arranged inside the hysteresis vertical holes (602). (7), a hysteresis chamber (603) is provided inside the hysteresis plate (601) and is located on the left side of the hysteresis vertical hole (602). The left side of the inner cavity of the hysteresis chamber (603) is connected to a hysteresis piston (605) through a hysteresis spring (604). The hysteresis piston (605) is slidably inserted into the interior of the hysteresis chamber (603). A hysteresis head (606) is fixedly connected to the right side of the hysteresis piston (605). The right end of the hysteresis head (606) extends to the hysteresis vertical hole ( 602), the interior of the hysteresis plate (601) is provided with a linkage cavity (607) located on both sides of the hysteresis cavity (603), the inner wall of the linkage cavity (607) is provided with a hysteresis sliding hole (608), the linkage cavity (607) is communicated with the hysteresis cavity (603) through the hysteresis sliding hole (608), the interior of the hysteresis sliding hole (608) is slidably inserted with a hysteresis sliding piece (609), one end of the hysteresis sliding piece (609) is fixedly connected to the hysteresis piston (605) On the surface, the other end of the hysteresis slide (609) extends to the inside of the linkage cavity (607) and is fixedly connected to the hysteresis slide column (610), and a hysteresis push rod (611) is movably inserted on the right side surface of the hysteresis plate (601), and the right end of the hysteresis push rod (611) extends to the outside of the rear compartment (21), the hysteresis push rod (611) is movably inserted into the inside of the linkage cavity (607), and the hysteresis slide column (610) is fixedly sleeved on the outside of the hysteresis push rod (611); The post-adsorption assembly (7) includes a post-adsorption cylinder (701), which is fixedly connected to the top surface of the hysteresis plate (601). There are four post-adsorption cylinders (701), which are respectively connected to the ends of two pneumatic tubes (52) and two pneumatic branches (53). The top surface of the inner cavity of the post-adsorption cylinder (701) is connected to a post-adsorption piston (703) via a post-adsorption spring (702). The post-adsorption piston (703) is slidably inserted into the interior of the post-adsorption cylinder (701). A post-adsorption tube (704) located in the middle thereof is fixedly inserted on the post-adsorption piston (703). The bottom end of the post-adsorption tube (704) passes through the hysteresis vertical hole (602). The post-adsorption tube (704) is fixedly inserted into the post-adsorption cylinder (701). 04) is provided with a ratchet-shaped annular groove (705) at its bottom, the ratchet-shaped annular groove (705) is adapted to the lag head (606), the bottom end of the rear adsorption tube (704) is fixedly connected to the rear suction cup (706), the outer portion of the rear adsorption tube (704) is movably sleeved with a guide tube (707) located at its top, the top end of the guide tube (707) is fixedly connected to the top surface of the inner cavity of the rear adsorption cylinder (701), the top surface of the rear adsorption cylinder (701) is fixedly plugged with a rear bending tube (708), the rear bending tube (708) is connected to the guide tube (707), the pipeline of the rear bending tube (708) is connected to a rear control valve (709), and the other end of the rear bending tube (708) is connected to a rear constant pressure valve (710); The extrusion structure (8) includes an extrusion flat tube (81), the extrusion flat tube (81) is fixedly connected to the top surface of the inner cavity of the rear compartment (21), an extrusion flat plate (82) is slidably inserted into the interior of the extrusion flat tube (81), the bottom end of the extrusion flat plate (82) extends to the outside of the extrusion flat tube (81) and is fixedly connected to an inclined flat plate (83), the bottom end of the inclined flat plate (83) is fixedly connected to an extrusion strip (84), the bottom end of the extrusion strip (84) extends from the bottom surface of the rear compartment (21) and is fixedly connected to the top surface of the corresponding rear suction cup (706); The front walking device (3) includes a front carriage (31), the left side of the front carriage (31) is fixedly connected to the right end of the driving tube (07) and the pneumatic hard tube (56), the right end of the hysteresis push rod (611) is in contact with the left side of the front carriage (31), four front fixed-distance wheels (32) are fixedly connected to the bottom surface of the front carriage (31), and the four front fixed-distance wheels (32) are respectively located at the four corners of the bottom surface of the front carriage (31), a collector (33) is fixedly installed on the bottom surface of the inner cavity of the front carriage (31) at its right end, and a guide wheel (34) is fixedly installed on the top surface of the inner cavity of the front carriage (31) at its left end, and a traction line (35) is wound around the outside of the guide wheel (34), and one end of the traction line (35) extends from the left side of the front carriage (31) and extends to the left side of the front carriage (31). The front carriage (31) extends into the interior of the rear carriage (21) and is connected to the rear constant pressure valve (710). A reinforcing block (36) located on the right side of the guide wheel (34) is fixedly connected to the top surface of the inner cavity of the front carriage (31). A lifting structure (9) located in the middle is installed on the bottom surface of the inner cavity of the front carriage (31). A front adsorption assembly (11) is installed on the top of the lifting structure (9). The front adsorption assembly (11) is connected to the other end of the traction line (35). A delay device (10) located on the left side of the lifting structure (9) is fixedly installed on the bottom surface of the inner cavity of the front carriage (31). A trigger structure (12) located on the right end of the front carriage (31) is fixedly installed on the top surface of the inner cavity of the front carriage (31). The trigger structure (12) is compatible with the front constant pressure valve (118). A detection mechanism (4) is provided on the right side surface of the front carriage (31).

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