CN220619781U - Vehicle-mounted bridge inspection equipment - Google Patents

Abstract

The utility model relates to vehicle-mounted bridge inspection equipment, which comprises a travelling mechanism, a detection frame and a detection camera, wherein the detection frame is connected to the travelling mechanism through a support frame; the detection frame comprises a slewing bearing arm, a horizontal bearing arm, a vertical arm and a detection arm, wherein the slewing bearing arm is vertically arranged, the slewing bearing arm is connected with the support frame through a first slewing mechanism, the horizontal bearing arm is connected with the slewing bearing arm, the vertical arm is connected with the horizontal bearing arm through a turnover mechanism, the detection arm is connected with the vertical arm through a second slewing mechanism, the detection arm is hinged with the second slewing mechanism, and the detection camera is installed at one end of the detection arm. According to the utility model, the detection frame carrying the high-definition detection cameras is arranged and fixed on the travelling mechanism to form a three-dimensional space capable of moving flexibly, so that the detection cameras carried at the tail ends of the detection arms can move at any angles at the bridge side or under the bridge, thereby obtaining appearance images at the bridge side or under the bridge, and checking appearance diseases and appearance damage conditions of the bridge.

Description

Vehicle-mounted bridge inspection equipment

Technical Field

The utility model belongs to the technical field of bridge detection equipment, and relates to vehicle-mounted bridge detection equipment.

Background

Along with the continuous perfection of national infrastructure, the total amount of the bridge is continuously increased, the bridge is built on a river, and vehicles are convenient to drive, so that the stability and the safety of the bridge are very important, the detection work for the implementation of the bridge is very important, the detection and the maintenance of the bridge are also necessary, and the requirements on bridge inspection equipment are also increased.

The traditional bridge inspection equipment generally adopts a mechanical arm to send inspection personnel to the side surface or the bottom of the bridge to directly inspect the appearance of the bridge, and as the inspection personnel are in an overhead working state, the safety is not ensured, the detection workload of the staff is increased, and the detection level and the detection efficiency are not improved.

Disclosure of Invention

The utility model aims to provide vehicle-mounted bridge inspection equipment, which is characterized in that a detection frame with a high-definition detection camera is fixedly arranged on a travelling mechanism (a pick-up truck or a flat car) to form a flexible three-dimensional space, so that the detection camera at the tail end of a detection arm can move at any angle at the side or under a bridge, thereby obtaining an appearance image at the side or under the bridge, and inspecting appearance diseases and appearance damage conditions of the bridge, and effectively solving the problems existing in the background technology.

The technical scheme adopted by the utility model for achieving the purpose is as follows: the vehicle-mounted bridge inspection equipment comprises a travelling mechanism, a detection frame and a detection camera, wherein the detection frame is connected to the travelling mechanism through a support frame; the detection frame comprises a slewing bearing arm, a horizontal bearing arm, a vertical arm and a detection arm, wherein the slewing bearing arm is vertically arranged, the bottom of the slewing bearing arm is connected with the support frame through a first slewing mechanism, one end of the horizontal bearing arm is vertically connected with the upper end of the slewing bearing arm, the vertical arm is connected with one end, far away from the slewing bearing arm, of the horizontal bearing arm through a turnover mechanism, the detection arm is connected with the lower end of the vertical arm through a second slewing mechanism, the detection arm is hinged with the second slewing mechanism, and the detection camera is installed at one end, far away from the second slewing mechanism, of the detection arm.

The utility model further adopts the technical scheme that: the vertical arm and the detection arm are of nested telescopic structures and comprise a fixed arm, a telescopic motor, a ball screw and a screw nut, wherein the fixed arm and the telescopic arm are of hollow rectangular columnar structures, one ends of the fixed arm and the telescopic arm are respectively connected with an end plate, the telescopic arm is arranged in an inner cavity of the fixed arm in a nested manner, the telescopic motor is arranged on the outer side of the end plate of the fixed arm, and an output shaft of the telescopic motor extends into the inner cavity of the fixed arm; the ball screw is connected with an output shaft of the telescopic motor through a coupler, extends into an inner cavity of the telescopic arm and is matched with the screw nut; the telescopic motor drives the ball screw to rotate, so that the telescopic arm can move in the fixed arm in a telescopic way.

The utility model further adopts the technical scheme that: the first slewing mechanism comprises a first slewing bearing and a first slewing motor, the lower end of the slewing bearing arm is connected with the supporting frame through the first slewing bearing, the first slewing motor is fixed on the lower side of the supporting frame, a driving gear of the first slewing motor is meshed with an outer ring gear of the first slewing bearing, and the first slewing motor can drive the first slewing bearing to rotate.

The utility model further adopts the technical scheme that: the turnover mechanism comprises a turnover plate, two side plates, two turnover oil cylinders, two groups of guide rail slide block assemblies and a lifting mechanism for controlling the vertical arm to ascend or descend; the two side plates are symmetrically welded and connected to two side edges of the turnover plate respectively, a first turnover hinging seat and a second turnover hinging seat are arranged on two side edges of the rear side surface of the turnover plate respectively, two side surfaces of the front end of the horizontal supporting arm are hinged with the first turnover hinging seat through rotating shafts respectively, the rear ends of cylinder bodies of the two turnover cylinders are hinged with two side surfaces of the horizontal supporting arm respectively, the front ends of telescopic rods of the turnover cylinders are hinged with the corresponding second turnover hinging seats respectively, and the turnover plate can rotate around the first turnover hinging seats in a turnover mode due to telescopic rods of the turnover cylinders; the guide rail of the guide rail slide block assembly is connected to two side surfaces of the vertical arm, and the slide blocks of the guide rail slide block assembly are respectively connected to the inner sides of the two side plates and matched with the guide rail, so that the vertical arm can slide up and down along the vertical direction; the lifting mechanism comprises a lifting motor, a lifting gear and a lifting rack, wherein the lifting rack is fixedly connected to the rear end face of one side of the vertical arm leaning on the overturning plate, the lifting motor is fixedly connected to one side of the overturning plate far away from the vertical arm, a rotating shaft of the lifting motor extends to the side face of the lifting rack, and the lifting gear is connected with the rotating shaft of the lifting motor and meshed with the lifting rack to form a gear-rack transmission pair.

The utility model further adopts the technical scheme that: the second slewing mechanism comprises a supporting connecting plate, a second slewing bearing, a connecting platform and a second slewing motor, wherein the supporting connecting plate is connected with the lower end of the vertical arm, the upper end of the connecting platform is connected with the supporting connecting plate through the second slewing bearing, the second slewing motor is fixed on the supporting connecting plate, a driving gear of the second slewing motor is meshed with an outer ring gear of the second slewing bearing, and the second slewing motor can be driven to rotate.

The utility model further adopts the technical scheme that: the lower side of the connecting platform is respectively provided with two first folding hinge seats A, two second folding hinge seats A and two folding oil cylinders, the two first folding hinge seats A are respectively and symmetrically welded on two sides of one end, connected with the connecting platform, of the detecting arm, the two second folding hinge seats A are respectively and symmetrically welded on the lower side of one end, far away from the first folding hinge seats A, of the connecting platform, one end, connected with the second slewing mechanism, of the detecting arm is provided with a connecting end plate, two first folding hinge seats B are respectively welded on two sides, close to the upper end, of the end face, connected with the second slewing mechanism, of the connecting end plate, and two second folding hinge seats B are respectively welded on two sides, close to the lower end, of the end face, connected with the second slewing mechanism; the device is characterized in that the first folding hinge seat A is respectively hinged with the corresponding first folding hinge seat B through a hinge shaft, the rear end of a cylinder body of the folding cylinder is respectively hinged with the corresponding second folding hinge seat A, the front end of a telescopic rod of the folding cylinder is respectively hinged with the corresponding second folding hinge seat B, and the telescopic rod of the folding cylinder stretches and contracts to enable the detection arm to be overturned and folded around the hinge shaft.

The utility model further adopts the technical scheme that: the travelling mechanism is a pickup truck or a flatbed.

By adopting the scheme, the vehicle-mounted bridge inspection equipment has the following beneficial effects:

1. according to the vehicle-mounted bridge inspection equipment, the inspection frame with the high-definition inspection camera is installed and fixed on the travelling mechanism (the pick-up truck or the flatbed), and the slewing bearing arm, the horizontal bearing arm, the vertical arm and the inspection arm are matched with the first slewing mechanism, the turnover mechanism, the lifting mechanism and the second slewing mechanism to form a flexibly movable three-dimensional space, so that the inspection camera at the tail end of the inspection arm can move at any angle at the bridge side or under the bridge, thereby obtaining an appearance image at the bridge side or under the bridge, inspecting appearance diseases and appearance damage conditions of the bridge, and providing a basis for the inspection of the structural material of the bridge of the next step;

2. the detection frame is made of light and high-strength aluminum alloy materials, is provided with a power supply system, can be used for outdoor movement operation for a long time, does not influence traffic during operation, can be used for moving a position at any time, can safely, quickly and efficiently enter an inspection position for flow detection, is used for visual analysis in a short-distance sampling process, and stores graphic video information, and has the advantages of convenience in construction operation, flexibility in operation, high operation efficiency, no traffic interruption, high safety and reliability and the like;

3. the vehicle-mounted bridge inspection equipment can be remotely controlled on the road surface through remote control of rotation, folding and stretching of the slewing bearing arm, the horizontal bearing arm, the vertical arm and the detection arm, is safe and convenient to operate, replaces high-altitude detection of constructors, guarantees safety of the detection personnel, greatly reduces detection workload of the staff, improves detection level and efficiency, and greatly reduces difficulty of bridge detection and effectively improves detection level for bridge quality detection.

The utility model relates to a vehicle-mounted bridge inspection device, which is further described below with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic view of a fully deployed state of a vehicular bridge inspection apparatus of the present utility model;

FIG. 2 is a schematic structural view of a folding state of a vehicle-mounted bridge inspection apparatus according to the present utility model;

FIG. 3 is a side view of a folded state of the vehicle-mounted bridge inspection apparatus of the present utility model;

fig. 4 is an enlarged view at a in fig. 1;

fig. 5 is an enlarged view at B in fig. 1;

FIG. 6 is one of the schematic structural views of the vertical arm connected to the horizontal support arm by the tilting mechanism;

FIG. 7 is a second schematic view of the connection of the vertical arm to the horizontal support arm via the tilting mechanism;

FIG. 8 is a schematic view of the structure of the vertical arm/detection arm;

FIG. 9 is a schematic view of the internal structure of the vertical arm/detection arm;

reference numerals illustrate: 1-running mechanism, 2-supporting frame, 31-first slewing mechanism, 311-first slewing bearing, 312-first slewing motor, 32-slewing bearing arm, 33-horizontal bearing arm, 34-vertical arm, 35-tilting mechanism, 351-tilting cylinder, 352-tilting plate, 3521-first tilting hinge seat, 3522-second tilting hinge seat, 353-side plate, 354-slider, 355-guide rail, 356-lifting motor, 357-lifting rack, 36-second slewing mechanism, 361-supporting connection plate, 362-second slewing bearing, 363-connection platform, 364-second tilting hinge seat A, 365-tilting cylinder, 366-second tilting hinge seat B, 367-first tilting hinge seat B, 3671-hinge shaft, 368-first tilting hinge seat A, 369-second slewing motor, 37-detecting arm, 371-connection end plate, 4-detecting camera, 51-fixed arm, 52-telescoping arm, 53-telescoping motor, 54-ball screw, 55-screw nut, 56-coupling.

Detailed Description

Example 1

As shown in fig. 1 to 7, the vehicle-mounted bridge inspection device comprises a travelling mechanism 1, a detection frame and a detection camera 4, wherein the travelling mechanism 1 is a pickup truck or a flatbed, and the detection frame is connected to the travelling mechanism 1 through a support frame 2.

The detection frame comprises a slewing bearing arm 32, a horizontal bearing arm 33, a vertical arm 34 and a detection arm 37, wherein the slewing bearing arm 32 is vertically arranged, the bottom of the slewing bearing arm 32 is connected with a support frame 2 through a first slewing mechanism 31, one end of the horizontal bearing arm 33 is vertically connected with the upper end of the slewing bearing arm 32, the vertical arm 34 is connected with one end, far away from the slewing bearing arm 32, of the horizontal bearing arm 33 through a turnover mechanism 35, the detection arm 37 is connected with the lower end of the vertical arm 34 through a second slewing mechanism 36, the detection arm 37 is hinged with the second slewing mechanism 36, and the detection camera 4 is arranged at one end, far away from the second slewing mechanism 36, of the detection arm 37.

The first slewing mechanism 31 includes a first slewing bearing 311 and a first slewing motor 312, the lower end of the slewing bearing arm 32 is connected with the support frame 2 through the first slewing bearing 311, the first slewing motor 312 is fixed at the lower side of the support frame 2, and a driving gear of the first slewing motor 312 is meshed with an outer ring gear of the first slewing bearing 311, and the first slewing bearing 311 can be driven to rotate through the first slewing motor 312.

The turnover mechanism 35 comprises a turnover plate 352, two side plates 353, two turnover oil cylinders 351, two groups of guide rail slide block assemblies and a lifting mechanism for controlling the vertical arm 34 to ascend or descend; the two side plates 353 are symmetrically welded and connected to two side edges of the turnover plate 352, a first turnover hinge seat 3521 and a second turnover hinge seat 3522 are respectively arranged on two side edges of the rear side surface of the turnover plate 352, two side surfaces of the front end of the horizontal support arm 33 are respectively hinged with the first turnover hinge seat 3521 through a rotating shaft, the rear ends of the cylinder bodies of the two turnover cylinders 351 are respectively hinged with two side surfaces of the horizontal support arm 33, the front ends of telescopic rods of the turnover cylinders 351 are respectively hinged with the corresponding second turnover hinge seats 3522, and the telescopic rods of the turnover cylinders 351 stretch to enable the turnover plate 352 to turnover and rotate around the first turnover hinge seat 3521; the guide rail 355 of the guide rail slide block assembly is connected to two side surfaces of the vertical arm, and the slide blocks 354 of the guide rail slide block assembly are respectively connected to the inner sides of the two side plates 353 and matched with the guide rail 355, so that the vertical arm 34 can slide up and down along the vertical direction; the lifting mechanism comprises a lifting motor 356, a lifting gear and a lifting rack 357, wherein the lifting rack 357 is fixedly connected to the rear end face of the vertical arm 34 on one side close to the turning plate 352, the lifting motor 356 is fixedly connected to one side of the turning plate 352 far away from the vertical arm 34, a rotating shaft of the lifting motor 356 extends to the side face of the lifting rack 357, the lifting gear is connected with the rotating shaft of the lifting motor 356 and meshed with the lifting rack 357 to form a gear-rack transmission pair, and the rotating shaft of the lifting motor 356 can drive the vertical arm 34 to vertically slide through the gear-rack transmission pair.

The second swing mechanism 36 includes a support connection plate 361, a second swing support 362, a connection platform 363, and a second swing motor 369, where the support connection plate 361 is connected to the lower end of the vertical arm 34, the upper end of the connection platform 363 is connected to the support connection plate 361 through the second swing support 362, the second swing motor 369 is fixed to the support connection plate 361, and a driving gear of the second swing motor 369 is meshed with an outer ring gear of the second swing support 362, and the second swing support 362 can be driven to rotate by the second swing motor 369.

The lower side of the connection platform 363 is respectively provided with two first folding hinge seats A368, two second folding hinge seats A364 and two folding cylinders 365, the two first folding hinge seats A368 are respectively and symmetrically welded on two sides of one end, connected with the detection arm 37, of the connection platform 363, the two second folding hinge seats A364 are respectively and symmetrically welded on the lower side, far away from the first folding hinge seats A368, of the connection platform 363, one end, connected with the second slewing mechanism 36, of the detection arm 37 is provided with a connection end plate 371, two first folding hinge seats B367 are respectively and welded on two sides, close to the upper end, of the end face, connected with the second slewing mechanism 36, of the connection end plate 371, and two second folding hinge seats B366 are respectively welded on two sides, close to the lower end, of the end face, connected with the second slewing mechanism 36; the first folding hinge seat A368 is respectively connected with the corresponding first folding hinge seat B367 in a hinge mode through hinge shafts 3671, the rear end of a cylinder body of the folding oil cylinder 365 is respectively connected with the corresponding second folding hinge seat A364 in a hinge mode, the front end of a telescopic rod of the folding oil cylinder 365 is respectively connected with the corresponding second folding hinge seat B366 in a hinge mode, and the telescopic rod of the folding oil cylinder 365 stretches and contracts to enable the detection arm 37 to be overturned and folded around the hinge shafts 3671.

According to the vehicle-mounted bridge inspection equipment, the inspection frame with the high-definition inspection camera is installed and fixed on the travelling mechanism (the pick-up truck or the flatbed), and the slewing bearing arm, the horizontal bearing arm, the vertical arm and the inspection arm are matched with the first slewing mechanism, the turnover mechanism, the lifting mechanism and the second slewing mechanism to form a flexibly movable three-dimensional space, so that the inspection camera at the tail end of the inspection arm can move at any angle at the bridge side or under the bridge, thereby obtaining an appearance image at the bridge side or under the bridge, inspecting appearance diseases and appearance damage conditions of the bridge, and providing a basis for the inspection of the structural material of the bridge of the next step; the detection frame is made of light and high-strength aluminum alloy materials, is provided with a power supply system, can move outdoors for a long time, can move at any time, can safely, quickly and efficiently enter an inspection position to perform flow detection, is subjected to visual analysis in a short-distance sampling process, and stores graphic video information, and has the advantages of convenience in construction operation, flexibility in working, high operation efficiency, no interruption of traffic, high safety and reliability and the like.

In addition, the walking mechanism 1 is also provided with a hydraulic station for providing hydraulic power for hydraulic elements such as the folding cylinder 365, the overturning cylinder 351 and the like, and is also provided with a storage battery and a gasoline generator for providing power for the rotary motor, the hydraulic station and the electric control system; the traveling mechanism 1 is also provided with a fixed counterweight, so that the stability of the vehicle-mounted bridge inspection equipment is enhanced; the detection camera 4 can store the acquired pictures by itself, and can also transmit the pictures to the upper computer by wireless; it is worth mentioning that the slewing bearing arm, the horizontal bearing arm, the vertical arm and the detection arm of the vehicle-mounted bridge inspection equipment can be remotely controlled to rotate, fold and stretch through remote control, and the equipment can be remotely controlled on a road surface.

Example 2

In this embodiment, as shown in fig. 8 and 9, the vertical arm 34 and the detecting arm 37 are both in a nested telescopic structure, and include a fixed arm 51, a telescopic arm 52, a telescopic motor 53, a ball screw 54 and a screw nut 55, where the fixed arm 51 and the telescopic arm 52 are in a hollow rectangular columnar structure, one end of the fixed arm 51 and one end of the telescopic arm 52 are respectively connected with an end plate, the telescopic arm 52 is nested and telescopic in an inner cavity of the fixed arm 51, the telescopic motor 53 is arranged outside the end plate of the fixed arm 51, and an output shaft of the telescopic motor 53 extends into the inner cavity of the fixed arm 51; the screw nut 55 is arranged in the telescopic arm 52 and connected with the inner side wall of the end plate of the telescopic arm 52, the ball screw 54 is connected with the output shaft of the telescopic motor 53 through the coupler 56, and the ball screw 54 extends into the inner cavity of the telescopic arm 52 and is matched with the screw nut 55; the telescopic motor 53 drives the ball screw 54 to rotate, so that the telescopic arm 52 can move telescopically in the fixed arm 51, and the operation range of the vehicle-mounted bridge inspection equipment is enlarged.

The above embodiments are merely preferred embodiments of the present utility model, the structure of the present utility model is not limited to the forms of the above embodiments, and any modifications, equivalents, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The vehicle-mounted bridge inspection equipment comprises a travelling mechanism, a detection frame and a detection camera, wherein the detection frame is connected to the travelling mechanism through a support frame; the method is characterized in that: the detection frame comprises a slewing bearing arm, a horizontal bearing arm, a vertical arm and a detection arm, wherein the slewing bearing arm is vertically arranged, the bottom of the slewing bearing arm is connected with the support frame through a first slewing mechanism, one end of the horizontal bearing arm is vertically connected with the upper end of the slewing bearing arm, the vertical arm is connected with one end, far away from the slewing bearing arm, of the horizontal bearing arm through a turnover mechanism, the detection arm is connected with the lower end of the vertical arm through a second slewing mechanism, the detection arm is hinged with the second slewing mechanism, and the detection camera is installed at one end, far away from the second slewing mechanism, of the detection arm.

2. The vehicle-mounted bridge inspection apparatus of claim 1, wherein: the vertical arm and the detection arm are of nested telescopic structures and comprise a fixed arm, a telescopic motor, a ball screw and a screw nut, wherein the fixed arm and the telescopic arm are of hollow rectangular columnar structures, one ends of the fixed arm and the telescopic arm are respectively connected with an end plate, the telescopic arm is arranged in an inner cavity of the fixed arm in a nested manner, the telescopic motor is arranged on the outer side of the end plate of the fixed arm, and an output shaft of the telescopic motor extends into the inner cavity of the fixed arm; the ball screw is connected with an output shaft of the telescopic motor through a coupler, extends into an inner cavity of the telescopic arm and is matched with the screw nut; the telescopic motor drives the ball screw to rotate, so that the telescopic arm can move in the fixed arm in a telescopic way.

3. The vehicle-mounted bridge inspection apparatus of claim 1, wherein: the first slewing mechanism comprises a first slewing bearing and a first slewing motor, the lower end of the slewing bearing arm is connected with the supporting frame through the first slewing bearing, the first slewing motor is fixed on the lower side of the supporting frame, a driving gear of the first slewing motor is meshed with an outer ring gear of the first slewing bearing, and the first slewing motor can drive the first slewing bearing to rotate.

4. The vehicle-mounted bridge inspection apparatus of claim 1, wherein: the turnover mechanism comprises a turnover plate, two side plates, two turnover oil cylinders, two groups of guide rail slide block assemblies and a lifting mechanism for controlling the vertical arm to ascend or descend; the two side plates are symmetrically welded and connected to two side edges of the turnover plate respectively, a first turnover hinging seat and a second turnover hinging seat are arranged on two side edges of the rear side surface of the turnover plate respectively, two side surfaces of the front end of the horizontal supporting arm are hinged with the first turnover hinging seat through rotating shafts respectively, the rear ends of cylinder bodies of the two turnover cylinders are hinged with two side surfaces of the horizontal supporting arm respectively, the front ends of telescopic rods of the turnover cylinders are hinged with the corresponding second turnover hinging seats respectively, and the turnover plate can rotate around the first turnover hinging seats in a turnover mode due to telescopic rods of the turnover cylinders; the guide rail of the guide rail slide block assembly is connected to two side surfaces of the vertical arm, and the slide blocks of the guide rail slide block assembly are respectively connected to the inner sides of the two side plates and matched with the guide rail, so that the vertical arm can slide up and down along the vertical direction; the lifting mechanism comprises a lifting motor, a lifting gear and a lifting rack, wherein the lifting rack is fixedly connected to the rear end face of one side of the vertical arm leaning on the overturning plate, the lifting motor is fixedly connected to one side of the overturning plate far away from the vertical arm, a rotating shaft of the lifting motor extends to the side face of the lifting rack, and the lifting gear is connected with the rotating shaft of the lifting motor and meshed with the lifting rack to form a gear-rack transmission pair.

5. The vehicle-mounted bridge inspection apparatus of claim 1, wherein: the second slewing mechanism comprises a supporting connecting plate, a second slewing bearing, a connecting platform and a second slewing motor, wherein the supporting connecting plate is connected with the lower end of the vertical arm, the upper end of the connecting platform is connected with the supporting connecting plate through the second slewing bearing, the second slewing motor is fixed on the supporting connecting plate, a driving gear of the second slewing motor is meshed with an outer ring gear of the second slewing bearing, and the second slewing motor can be driven to rotate.

6. The vehicle-mounted bridge inspection apparatus of claim 5, wherein: the lower side of the connecting platform is respectively provided with two first folding hinge seats A, two second folding hinge seats A and two folding oil cylinders, the two first folding hinge seats A are respectively and symmetrically welded on two sides of one end, connected with the connecting platform, of the detecting arm, the two second folding hinge seats A are respectively and symmetrically welded on the lower side of one end, far away from the first folding hinge seats A, of the connecting platform, one end, connected with the second slewing mechanism, of the detecting arm is provided with a connecting end plate, two first folding hinge seats B are respectively welded on two sides, close to the upper end, of the end face, connected with the second slewing mechanism, of the connecting end plate, and two second folding hinge seats B are respectively welded on two sides, close to the lower end, of the end face, connected with the second slewing mechanism; the device is characterized in that the first folding hinge seat A is respectively hinged with the corresponding first folding hinge seat B through a hinge shaft, the rear end of a cylinder body of the folding cylinder is respectively hinged with the corresponding second folding hinge seat A, the front end of a telescopic rod of the folding cylinder is respectively hinged with the corresponding second folding hinge seat B, and the telescopic rod of the folding cylinder stretches and contracts to enable the detection arm to be overturned and folded around the hinge shaft.

7. The vehicle-mounted bridge inspection apparatus of claim 1, wherein: the travelling mechanism is a pickup truck or a flatbed.