Building bridge steel structure detection equipment

Abstract

The invention discloses a building bridge steel structure detection device, and relates to the field of bridge steel structure detection, the building bridge steel structure detection device comprises a cabinet, and the cabinet is fixedly provided with a water tank and a mounting cover which abut against each other; a detection assembly; the detection assembly comprises a reciprocating screw rod rotationally mounted in the case, the reciprocating screw rod is sleeved with a moving block in matched connection with the reciprocating screw rod, the moving block is fixedly connected with a mounting frame, one side of the mounting frame is fixedly connected with a mounting block, the bottom of the mounting block is fixedly connected with a mounting rod, and the mounting rod is fixedly connected with a motor. And a camera is mounted at the bottom of the mounting rod. According to the device, the steel structure can be endowed with detection on the coating quality in different environments, the friction block moves along with the moving block, and meanwhile, the friction block reciprocates, so that the friction block linearly moves on the steel structure and reciprocates to scrape the steel structure endowed with different environments, images of the scraped steel structure can be acquired through the camera, and the detection accuracy is improved. And the quality of the steel structure coating in different environments can be known.

Description

Technical Field

[0001] The invention relates to the technical field of bridge steel structure detection, and in particular to a building bridge steel structure detection device. Background Art

[0002] Steel structure bridges are also called steel structure bridges, steel bridges, and bridges whose main load-bearing structures are made of steel. Steel structures have light weight, high reliability, good vibration (shock) and impact resistance, but they are prone to corrosion and have poor fire resistance. In order to ensure the safety and service life of steel structure bridges, steel structure coatings, fire retardant coatings, bridge main structure beams, frame columns, welding processes, fasteners, bolts, nuts, and gaskets are all required inspections.

[0003] After the steel structure is produced, it needs to be sprayed with materials to better protect the steel structure; after the fire-proof material and the corrosion-resistant material are sprayed on the steel structure, the coating needs to be tested for scratch resistance in order to understand the scratch resistance of the coating; however, most of the current detection devices use simple friction treatment, and the staff observes whether the coating is damaged; the results of this detection method are inaccurate, and the steel structure is in different external environments. The current detection devices rarely give the steel structure the ability to detect the coating quality in different environments; for this reason, the present application proposes a building bridge steel structure detection device. Summary of the invention

[0004] The purpose of the present invention is to solve the above technical problems and to propose a building bridge steel structure detection equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A building bridge steel structure detection device comprises a chassis, on which a water tank and a mounting cover are fixedly mounted in opposition to each other;

[0007] Detection component; the detection component includes a reciprocating screw rod rotatably mounted in the chassis, the outer sleeve of the reciprocating screw rod is provided with a moving block matched and connected thereto, the moving block is fixedly connected to a mounting frame, one side of the mounting frame is fixedly connected to a mounting block, the bottom of the mounting block is fixedly connected to a mounting rod, and a camera is installed at the bottom of the mounting rod;

[0008] A wear mechanism is provided for subjecting the steel structure coating to different environments and testing its strength. The wear mechanism moves on the steel structure subjected to the different environments and cooperates with the camera to collect images of the worn areas on the steel structure. The scratch resistance of the steel structure coating is obtained through the collected images.

[0009] Preferably, a fixing plate located in a mounting cover is fixedly connected to the chassis, a motor is mounted on the fixing plate, a driving shaft is fixedly connected to the output end of the motor, bevel gears are mounted on the driving shaft and the reciprocating screw, and the two bevel gears are meshed with each other.

[0010] Preferably, a guide rod is fixedly connected inside the chassis, and the guide rod passes through the moving block and is slidably connected thereto.

[0011] Preferably, it also includes an environment changing mechanism for giving different environments to the steel structure, the environment changing mechanism includes a piston cylinder located in the mounting cover and fixed on the water tank, the piston cylinder is provided with a first suction pipe and a second suction pipe located in the water tank, an acid liquid tank is installed in the water tank, the first suction pipe is located in the acid liquid tank, the first suction pipe and the second suction pipe are provided with a first one-way valve, a liquid spray pipe is fixedly installed in the chassis, a plurality of spray holes are penetrated through the liquid spray pipe, a delivery pipe is installed on the piston cylinder, the delivery pipe is connected to the liquid spray pipe, a second one-way valve is installed on the delivery pipe, a movable piston is movably connected in the piston cylinder, a first connecting rod is hingedly connected to the movable piston, a first circular plate is fixedly provided at the upper end of the drive shaft, and the first connecting rod is eccentrically hingedly connected to the upper end of the first circular plate.

[0012] Preferably, an acid liquid bag is placed in the acid liquid box, an upper cover is provided at the upper end of the water tank, an electric push rod is installed on the upper cover, a piercing rod is fixedly connected to the output end of the electric push rod, the piercing rod is arranged opposite to the acid liquid bag, and a temperature control switch connected to the electric push rod is installed on the water tank.

[0013] Preferably, the wear mechanism includes a horizontal plate fixed on the mounting frame, the upper end of the horizontal plate is rotatably connected to a short shaft, a second circular plate and a transmission gear are coaxially fixedly connected to the short shaft, a rack plate is fixedly connected in the chassis, the transmission gear is connected to the rack plate, a rectangular rod is fixedly connected in the mounting frame, a movable rod is sleeved on the rectangular rod and slidably connected to the rectangular rod, a friction block is installed at the bottom of the movable rod, the upper end of the second circular plate is eccentrically hingedly connected to a second connecting rod, and the other end of the second connecting rod is rotatably connected to the upper end of the movable rod.

[0014] Preferably, it also includes a cleaning mechanism, which includes an airbag fixed on the mounting frame, the other end of the airbag is fixedly connected to the chassis, and a blow pipe connected to the airbag is fixedly installed on the bottom of the mounting frame, and the blow pipe is arranged opposite to the friction block.

[0015] Preferably, the air blowing pipe is located between the friction block and the camera, and the bottom of the air blowing pipe is higher than the bottom of the friction block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The air is heated to a low temperature, so the low-temperature air can be sucked into the piston cylinder. When the movable piston moves away from the first circular plate, the air in the piston cylinder can be transported to the spray pipe through the delivery pipe, and finally sprayed out through the spray hole. In this way, the low-temperature air can be blown onto the steel structure, and the steel structure can be used in a low-temperature environment. Since it takes some time for the crushed ice to melt, the time that the steel structure is kept in a low-temperature environment can be increased.

[0018] 2. The rotation of the second circular plate drives the movement of the second connecting rod, and the movement of the second connecting rod drives the movable rod to move back and forth. Under the guidance of the rectangular rod, the movable rod can achieve stable reciprocating movement. The movement of the movable rod drives the friction block to move back and forth, so that the surface of the steel structure can be scraped; that is, the friction block follows the movement of the moving block, and the friction block itself moves back and forth, so that the friction block moves linearly on the steel structure and reciprocates to scratch the steel structure given a low temperature environment. Through the camera, the image of the scraped steel structure can be collected to know whether the coating in the low environment is damaged.

[0019] 3. As the crushed ice is heated and melted, the melted water is still at a low temperature. Therefore, the moving piston moves back and forth, which can absorb the low-temperature water and spray it out through the spray hole, which can give the coating scratch resistance in low-temperature rainy days.

[0020] 4. When the installation frame moves to the right, the airbag will be squeezed, and the air in the airbag can be squeezed into the air pipe and blown out, so that the remaining water stains on the steel structure can be blown away. This will not affect the image acquisition of the scratched steel structure by the rear camera, so as to ensure the quality of image acquisition, and then better judge the quality of the coating.

[0021] 5. As the water temperature in the water tank gradually increases, the coating on the steel structure can be scratched at different temperatures and its images can be collected to better understand the quality of the coating at different temperatures.

[0022] 6. When the moving piston continues to move, the acid and water can be sucked into the piston cylinder, and finally the diluted acid is sprayed onto the steel structure through the spray hole, so that the coating that has been scraped at different temperatures can be corroded by acid.

[0023] In summary, the present invention can detect the coating quality of steel structures in different environments. The friction block follows the movement of the moving block, and the friction block itself moves back and forth. In this way, the friction block moves linearly and reciprocatingly on the steel structure to scratch the steel structures in different environments. Through the camera, images of the scraped steel structures can be collected, and the quality of the coating of the steel structures in different environments can be known. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a building bridge steel structure detection device proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the structure inside a chassis of a building bridge steel structure detection device proposed by the present invention;

[0026] Figure 3 This is a rear view of a building bridge steel structure detection device proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of a water tank in a building bridge steel structure detection device proposed by the present invention;

[0028] Figure 5 This is a structural schematic diagram of a reciprocating screw rod and a mounting frame in a building bridge steel structure detection device proposed by the present invention;

[0029] Figure 6 This is a rear view of a reciprocating screw rod and a mounting frame in a building bridge steel structure detection device proposed by the present invention;

[0030] Figure 7 A top view of a reciprocating screw rod and a mounting frame in a building bridge steel structure detection device proposed by the present invention;

[0031] Figure 8 This is a schematic diagram of the second circular plate in a building bridge steel structure detection device proposed by the present invention.

[0032] In the figure: 1 chassis, 2 box door, 3 water tank, 4 mounting cover, 5 electric push rod, 6 upper cover, 7 piston cylinder, 8 first connecting rod, 9 second one-way valve, 10 fixed plate, 11 motor, 12 bevel gear, 13 drive shaft, 14 first circular plate, 15 guide rod, 16 reciprocating screw rod, 17 rack plate, 18 spray pipe, 19 spray hole, 20 mesh plate, 21 mounting frame, 22 camera, 23 mounting rod, 24 air bag, 25 movable piston, 26 delivery pipe, 27 acid liquid tank, 28 first one-way valve, 29 first suction pipe, 30 second suction pipe, 31 piercing rod, 32 acid liquid bag, 33 air blowing pipe, 34 movable rod, 35 friction block, 36 moving block, 37 second circular plate, 38 transmission gear, 39 second connecting rod, 40 rectangular rod, 41 mounting block, 42 ​​cross plate, 43 short shaft. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1-Figure 8A building bridge steel structure detection equipment includes a chassis 1, wherein a chassis door 2 is installed on the chassis 1, and a glass observation window is installed on the chassis door 2; a water tank 3 and a mounting cover 4 are fixedly installed on the chassis 1, wherein crushed ice is initially contained in the water tank 3, and a heat exchange tube (not shown in the figure) is installed in the water tank 3, and heated heat exchange oil is transported in the heat exchange tube to heat the crushed ice in the water tank 3.

[0035] Detection component; the detection component includes a reciprocating screw 16 rotatably installed in the chassis 1, a fixing plate 10 located in the mounting cover 4 is fixedly connected to the chassis 1, a motor 11 is installed on the fixing plate 10, a drive shaft 13 is fixedly connected to the output end of the motor 11, a bevel gear 12 is installed on the drive shaft 13 and the reciprocating screw 16, and the two bevel gears 12 are meshed with each other; the outer sleeve of the reciprocating screw 16 is provided with a moving block 36 matched with it, and in order to ensure the stable movement of the moving block 36, a guide rod 15 is fixedly connected in the chassis 1, and the guide rod 15 passes through the moving block 36 and is slidably connected with it.

[0036] A mounting frame 21 is fixedly connected to the moving block 36, a mounting block 41 is fixedly connected to one side of the mounting frame 21, a mounting rod 23 is fixedly connected to the bottom of the mounting block 41, a camera 22 is installed at the bottom of the mounting rod 23, and the camera 22 is used to capture images of the surface of the steel structure; in order to facilitate the placement of the steel structure, a mesh plate 20 that can be raised and lowered is installed in the chassis 1, and the lifting of the mesh plate 20 can be driven by a hydraulic cylinder, and a clamp can be installed on the mesh plate 20 for clamping and positioning the steel structure.

[0037] The wear mechanism applies different environments to the steel structure coating and detects its strength. The wear mechanism moves on the steel structure applied with different environments and cooperates with the camera 22 to collect images of the worn areas on the steel structure. The scratch resistance of the steel structure coating can be determined through the collected images.

[0038] It also includes an environment changing mechanism for giving different environments to the steel structure, the environment changing mechanism includes a piston cylinder 7 located in the mounting cover 4 and fixed on the water tank 3, the piston cylinder 7 is installed with a first suction pipe 29 and a second suction pipe 30 located in the water tank 3, an acid liquid tank 27 is installed in the water tank 3, the first suction pipe 29 is located in the acid liquid tank 27, the first suction pipe 29 and the second suction pipe 30 are installed with a first one-way valve 28, the first one-way valve 28 only allows the fluid to enter the piston cylinder 7 through the first suction pipe 29 and the second suction pipe 30.

[0039] A liquid spray pipe 18 is fixedly installed in the chassis 1, and a plurality of spray holes 19 are penetrated through the liquid spray pipe 18. A delivery pipe 26 is installed on the piston cylinder 7, and the delivery pipe 26 is connected to the liquid spray pipe 18. A second one-way valve 9 is installed on the delivery pipe 26, and the second one-way valve 9 only allows the fluid to flow through the piston cylinder 7 into the delivery pipe 26.

[0040] A movable piston 25 is movably connected in the piston cylinder 7, and a first connecting rod 8 is hingedly connected to the movable piston 25. A first circular plate 14 is fixed to the upper end of the driving shaft 13, and the first connecting rod 8 is eccentrically hingedly connected to the upper end of the first circular plate 14.

[0041] Among them, an acid liquid bag 32 is placed in the acid liquid tank 27, an upper cover 6 is provided at the upper end of the water tank 3, an electric push rod 5 is installed on the upper cover 6, the output end of the electric push rod 5 is fixedly connected to a piercing rod 31, the piercing rod 31 is arranged opposite to the acid liquid bag 32, and a temperature control switch connected to the electric push rod 5 is installed on the water tank 3. The temperature control switch includes a temperature sensor, a controller and a relay control switch. The temperature sensor detects a temperature signal and transmits it to the controller, and the controller transmits it to the relay control switch, and the relay control switch controls the switch of the electric push rod 5.

[0042] The wear mechanism includes a transverse plate 42 fixed on the mounting frame 21, the upper end of the transverse plate 42 is rotatably connected to a short shaft 43, a second circular plate 37 and a transmission gear 38 are coaxially fixedly connected to the short shaft 43, a rack plate 17 is fixedly connected in the chassis 1, the transmission gear 38 is connected to the rack plate 17, a rectangular rod 40 is fixedly connected in the mounting frame 21, a movable rod 34 is sleeved on the rectangular rod 40 and slidably connected to the rectangular rod 40, a friction block 35 is installed at the bottom of the movable rod 34, the upper end of the second circular plate 37 is eccentrically hingedly connected to a second connecting rod 39, and the other end of the second connecting rod 39 is rotatably connected to the upper end of the movable rod 34.

[0043] It also includes a cleaning mechanism, which includes an airbag 24 fixed on the mounting frame 21, the other end of the airbag 24 is fixedly connected to the chassis 1, and a blow pipe 33 connected to the airbag 24 is fixedly installed on the bottom of the mounting frame 21. The blow pipe 33 is arranged opposite to the friction block 35. The blow pipe 33 is located between the friction block 35 and the camera 22, and the bottom of the blow pipe 33 is higher than the bottom of the friction block 35 to prevent the blow pipe 33 from being worn.

[0044] When the present invention is used, the staff opens the box door 2, and then places the steel structure on the mesh plate 20, and then the hydraulic cylinder drives the mesh plate 20 to move up until the steel structure abuts against the friction block 35, closes the box door 2 and heats the inside of the water tank 3, and starts the motor 11;

[0045] The motor 11 drives the driving shaft 13 to rotate, and the driving shaft 13 rotates to drive the first circular plate 14 to rotate. The first circular plate 14 rotates to drive the first connecting rod 8 to move, and the movement of the first connecting rod 8 drives the moving piston 25 to move back and forth. When the moving piston 25 moves close to the first circular plate 14, the air in the water tank 3 can be pumped into the piston cylinder 7 through the first suction pipe 29 and the second suction pipe 30. The reason why it is air is that the crushed ice is not heated at this time, and the air is heat-exchanged and has a low temperature. Therefore, the low-temperature air can be sucked into the piston cylinder 7. When the moving piston 25 moves away from the first circular plate 14, the air in the piston cylinder 7 can be transported to the spray pipe 18 through the delivery pipe 26, and finally sprayed out through the spray hole 19. In this way, the low-temperature air can be blown onto the steel structure, and the steel structure can be used in a low-temperature environment. Since it takes some time for the crushed ice to melt, the time for the steel structure to be in a low-temperature environment can be increased.

[0046] Among them, the rotation of the driving shaft 13 drives the bevel gear 12 to rotate, and the rotation of the bevel gear 12 drives the reciprocating screw 16 to rotate. Since the moving block 36 is guided by the guide rod 15 and cannot rotate, the rotation of the reciprocating screw 16 can realize the movement of the moving block 36, and the movement of the moving block 36 drives the installation frame 21 to move. The movement of the installation frame 21 drives the installation block 41 and the cross plate 42 to move. The movement of the cross plate 42 drives the second circular plate 37 and the transmission gear 38. The transmission gear 38 moves and rolls on the rack plate 17, so that the transmission gear 38 is rotated. The rotation of the transmission gear 38 drives the short shaft 43 and the second circular plate 37 to rotate, and the second circular plate 37 rotates The second connecting rod 39 is driven to move, and the movement of the second connecting rod 39 drives the movable rod 34 to move back and forth. Under the guidance of the rectangular rod 40, the movable rod 34 can be stably reciprocated. The movement of the movable rod 34 drives the friction block 35 to move back and forth, so that the surface of the steel structure can be scraped; that is, the friction block 35 follows the movement of the moving block 36, and the friction block 35 moves back and forth by itself. In this way, the friction block 35 moves linearly and reciprocatingly on the steel structure to scrape the steel structure given a low temperature environment. Through the camera 22, the scraped steel structure can be imaged, and it can be known whether the coating in the low environment is damaged;

[0047] As the crushed ice is heated and melted, the melted water is still at a low temperature, so the movable piston 25 reciprocates to absorb the low-temperature water and spray it out through the spray hole 19, which can give the coating scratch resistance in low-temperature rainy days;

[0048] Since there is water on the steel structure, the image collected by the camera 22 will be affected by the water. Figure 2As shown, when the mounting frame 21 moves to the right, the airbag 24 is squeezed, and the air in the airbag 24 can be squeezed into the air blowing pipe 33 and blown out, so that the water stains remaining on the steel structure can be blown away, which will not affect the image acquisition of the scratched part of the steel structure by the rear camera 22, so as to ensure the quality of image acquisition, and thus the quality of the coating can be better judged;

[0049] As the water temperature in the water tank 3 gradually increases, as described above, the coating can be scratched at different temperatures on the steel structure and its images can be collected, so as to better understand the quality of the coating at different temperatures;

[0050] The acid solution bag 32 is not punctured, so what enters the piston cylinder 7 through the first suction tube 29 is air;

[0051] When the water in the water tank 3 boils, the temperature control switch detects that the temperature in the water tank 3 reaches the set temperature value, and the temperature sensor detects the temperature signal transmitted to the controller, and the controller transmits it to the relay control switch. After a period of time, the relay control switch controls the electric push rod 5 to be energized, and the electric push rod 5 drives the piercing rod 31 to move down to pierce the acid bag 32, and the acid in the acid bag 32 flows out, and the first suction pipe 29 is located in the acid; when the movable piston 25 continues to move, the acid and water can be sucked into the piston cylinder 7, and finally the diluted acid can be sprayed onto the steel structure through the spray hole 19, so that the coating that has been scraped at different temperatures can be subjected to acid corrosion treatment;

[0052] The quality of the coating under acid corrosion can be known through the camera 22;

[0053] In this way, the quality inspection of the steel structure coating is completed.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A building bridge steel structure detection device, comprising a chassis (1), characterized in that: The chassis (1) is fixedly mounted with a water tank (3) and a mounting cover (4) that are arranged in abutment with each other; A detection component; the detection component comprises a reciprocating screw (16) rotatably mounted in a chassis (1); the reciprocating screw (16) is provided with a moving block (36) that is matched and connected to the reciprocating screw (16); the moving block (36) is fixedly connected to a mounting frame (21); a mounting block (41) is fixedly connected to one side of the mounting frame (21); a mounting rod (23) is fixedly connected to the bottom of the mounting block (41); a camera (22) is mounted on the bottom of the mounting rod (23); A wear mechanism for applying different environments to a steel structure coating and detecting its strength. The wear mechanism moves on the steel structure applied with different environments and cooperates with the camera (22) to collect images of the worn areas on the steel structure. The scratch resistance of the steel structure coating is obtained through the collected images.

2. A building bridge steel structure detection equipment according to claim 1, characterized in that: A fixing plate (10) located in a mounting cover (4) is fixedly connected to the chassis (1), a motor (11) is mounted on the fixing plate (10), a driving shaft (13) is fixedly connected to the output end of the motor (11), bevel gears (12) are mounted on the driving shaft (13) and the reciprocating screw rod (16), and the two bevel gears (12) are meshed with each other.

3. A building bridge steel structure detection device according to claim 1, characterized in that: A guide rod (15) is fixedly connected inside the chassis (1), and the guide rod (15) passes through the moving block (36) and is slidably connected thereto.

4. A building bridge steel structure detection equipment according to claim 2, characterized in that: The machine also includes an environment changing mechanism for imparting different environments to the steel structure, the environment changing mechanism including a piston cylinder (7) located in the mounting cover (4) and fixed on the water tank (3), the piston cylinder (7) being provided with a first liquid suction pipe (29) and a second liquid suction pipe (30) located in the water tank (3), an acid liquid tank (27) being installed in the water tank (3), the first liquid suction pipe (29) being located in the acid liquid tank (27), the first liquid suction pipe (29) and the second liquid suction pipe (30) being provided with a first non-return valve (28), and a liquid spraying device (29) being fixedly installed in the machine box (1). A pipe (18) is provided, wherein the liquid spraying pipe (18) is penetrated by a plurality of spray holes (19), a delivery pipe (26) is installed on the piston cylinder (7), the delivery pipe (26) is connected to the liquid spraying pipe (18), a second one-way valve (9) is installed on the delivery pipe (26), a movable piston (25) is movably connected in the piston cylinder (7), a first connecting rod (8) is hingedly connected to the movable piston (25), a first circular plate (14) is fixed to the upper end of the driving shaft (13), and the first connecting rod (8) is eccentrically hingedly connected to the upper end of the first circular plate (14).

5. A building bridge steel structure detection device according to claim 4, characterized in that: An acid liquid bag (32) is placed in the acid liquid box (27), an upper cover (6) is provided at the upper end of the water tank (3), an electric push rod (5) is installed on the upper cover (6), a piercing rod (31) is fixedly connected to the output end of the electric push rod (5), the piercing rod (31) and the acid liquid bag (32) are arranged opposite to each other, and a temperature control switch connected to the electric push rod (5) is installed on the water tank (3).

6. The building bridge steel structure detection equipment according to claim 1 is characterized in that: The wear mechanism comprises a transverse plate (42) fixed on the mounting frame (21), the upper end of the transverse plate (42) being rotatably connected to a short shaft (43), a second circular plate (37) and a transmission gear (38) being coaxially fixedly connected to the short shaft (43), a rack plate (17) being fixedly connected inside the chassis (1), the transmission gear (38) being connected to the rack plate (17), a rectangular rod (40) being fixedly connected inside the mounting frame (21), a movable rod (34) being sleeved on the rectangular rod (40) and being slidably connected thereto, a friction block (35) being installed at the bottom of the movable rod (34), an upper end of the second circular plate (37) being eccentrically hingedly connected to a second connecting rod (39), the other end of the second connecting rod (39) being rotatably connected to the upper end of the movable rod (34).

7. The building bridge steel structure detection equipment according to claim 1 is characterized in that: The invention also comprises a cleaning mechanism, the cleaning mechanism comprising an air bag (24) fixed on the mounting frame (21), the other end of the air bag (24) being fixedly connected to the chassis (1), and a blow pipe (33) connected to the air bag (24) being fixedly installed at the bottom of the mounting frame (21), the blow pipe (33) being arranged opposite to the friction block (35).

8. The building bridge steel structure detection equipment according to claim 7 is characterized in that: The air blowing pipe (33) is located between the friction block (35) and the camera (22), and the bottom of the air blowing pipe (33) is higher than the bottom of the friction block (35).

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