A bridge detection mobile platform and use method thereof

Abstract

The present invention discloses a mobile bridge inspection platform, comprising a traveling mechanism and a truss assembly, wherein the traveling mechanism is a traveling vehicle, and the truss assembly comprises a slewing support arm, a vertical arm and a working platform; the slewing support arm is horizontally arranged and connected above the traveling vehicle through a first slewing mechanism; the vertical arm is connected to the slewing support arm through a flipping mechanism, and the flipping mechanism is provided with a guide limiter for connecting with the vertical arm, and the vertical arm is also provided with a lifting mechanism for controlling the vertical arm to rise or fall; the working platform is connected to the lower end of the vertical arm through a second slewing mechanism, and the working platform is hingedly connected to the second slewing mechanism. The present invention adopts a truss structure, and through the slewing support arm, the vertical arm and the working platform, in conjunction with the flipping mechanism, the lifting mechanism and the slewing mechanism, a three-dimensional space operation system can be formed, which greatly increases the working range under the bridge, has the advantages of simple operation, flexible action, etc., and has small shaking when the operation is carried out, high safety, and convenient transfer and transportation.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge detection equipment, and relates to a bridge detection mobile platform and a practical use method of the mobile platform. Background Art

[0002] With the continuous improvement of national infrastructure, the total number of bridges is increasing. Building bridges on rivers facilitates vehicle driving. Therefore, the stability and safety of bridges are very important. Regular inspection and maintenance of bridges are also increasing, and the demand for bridge inspection vehicles is also increasing. Bridge inspection vehicles are a common mobile bridge inspection and maintenance auxiliary equipment. They provide staff with a flexible and movable working platform, greatly improving the efficiency of bridge inspection and maintenance.

[0003] Most of the existing bridge inspection vehicles are based on the bridge inspection arms of large vehicles. Although they are fully functional, their structures are complex, which is not only expensive and not conducive to their market promotion; but also cannot be convenient and fast when the overall bridge inspection vehicle is unfolded and scaled; in addition, the increase in the weight of this type of large bridge inspection vehicle will increase the weight of the entire vehicle and affect the safety and stability of the vehicle operation.

[0004] With the development of technology, some lightweight bridge inspection platforms have appeared on the market. However, the overall rigidity of such inspection platforms is insufficient and their movements are inflexible. They will shake and become unstable during operation, posing safety hazards and increasing the safety risks for bridge inspectors. In addition, the severe shaking causes accelerated wear of the equipment and reduces its service life. Summary of the invention

[0005] The purpose of the present invention is to provide a mobile bridge inspection platform and a method of using the platform, which is easy to operate, flexible in movement, has little shaking during operation, is highly safe, and is convenient for transfer and transportation, thereby effectively solving the problems existing in the background technology.

[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a bridge inspection mobile platform, including a walking mechanism and a truss assembly, the truss assembly is connected to the walking mechanism through a first slewing mechanism, the walking mechanism is a traveling vehicle with a four-wheel structure, including a chassis, a steering axle and a driving axle, and the steering axle and the driving axle are respectively connected to the bottom of the chassis; the truss assembly includes a slewing support arm, a vertical arm and a working platform, and the vertical arm and the working platform are truss structures; the slewing support arm is horizontally arranged and connected above the chassis of the traveling vehicle through a first slewing mechanism; the vertical arm is connected to an end of the slewing support arm away from the first slewing mechanism through a flipping mechanism, and the flipping mechanism includes a flipping plate, two side plates, two flipping cylinders and a guide limit device for connecting to the vertical arm, the two side plates are symmetrically welded and connected to the two side edges of the flipping plate, and the two side edges of the rear side of the flipping plate are respectively provided with a first flipping hinge seat and a second flipping hinge seat The two sides of the front end of the slewing support arm are respectively hinged with the first flip hinge seat through a rotating shaft, and the rear ends of the cylinder bodies of the two flip cylinders are respectively hinged with the two side faces of the slewing support arm, and the front ends of the telescopic rods of the flip cylinders are respectively hinged with the corresponding second flip hinge seats, and the telescopic rods of the flip cylinders are retracted to make the flip plate flip and rotate around the first flip hinge seat; the guide limit device includes four limit guide wheel groups, and the four limit guide wheel groups are distributed in a rectangular shape and are respectively positioned at the upper and lower ends of the two side plates, and the two side edges of the side where the vertical arm is connected to the flip mechanism are respectively provided with guide rods that cooperate with the limit guide wheel groups, and the vertical arm is vertically arranged and located between the limit guide wheel groups opposite to each other horizontally, so that the vertical arm can slide up and down in the vertical direction; the flip mechanism is also provided with a lifting mechanism for controlling the vertical arm to rise or fall; the working platform is connected to the lower end of the vertical arm through a second slewing mechanism, and the working platform is hingedly connected to the second slewing mechanism.

[0007] A further technical solution of the present invention is: the limiting guide wheel group includes a limiting guide wheel and two sliding guide wheels, the limiting guide wheels are respectively connected to the corresponding side plates through the rotating shaft I and the guide wheel seat, and the axis of the limiting guide wheel is perpendicular to the flip plate, the circumferential surface of the middle part of the limiting guide wheel is recessed with a sliding groove, and the guide rod of the vertical arm is positioned in the sliding groove of the corresponding limiting guide wheel, so as to slide with the limiting guide wheel; the two sliding guide wheels are respectively positioned on the outside of the limiting guide wheel through the rotating shaft II and the fixed bracket, and the two sliding guide wheels are relatively arranged on the front and rear sides of the guide rod, the axis of the sliding guide wheel is perpendicular to the movement direction of the guide rod, and the guide rod is located between the corresponding two sliding guide wheels and in sliding contact with the sliding guide wheels.

[0008] A further technical solution of the present invention is that a guardrail is provided at one end of the slewing support arm close to the flipping mechanism, and a counterweight is provided at one end of the slewing support arm away from the flipping mechanism.

[0009] A further technical solution of the present invention is that four hydraulic lifting supports are connected to the side of the chassis of the traveling vehicle in a rectangular distribution, and the hydraulic lifting supports are respectively connected to the side of the chassis through telescopic cross bars, and the traveling vehicle can be lifted away from the ground through the hydraulic lifting supports.

[0010] A further technical solution of the present invention is: the first rotating mechanism includes a supporting arm connecting frame, a first rotating bearing and a first rotating motor, the lower end of the supporting arm connecting frame is connected to the chassis of the traveling vehicle through the first rotating bearing, the first rotating motor is fixed on the chassis of the traveling vehicle, and the driving gear of the first rotating motor is meshed with the inner ring gear of the first rotating bearing, and the rotating supporting arm is fixedly connected to the upper end of the supporting arm connecting frame.

[0011] A further technical solution of the present invention is: the lifting mechanism has two groups, which respectively include a lifting motor, a lifting gear and a lifting rack, and the lifting rack is relatively arranged on the two inner sides of the side where the vertical arm is connected to the flip mechanism; the lifting motors are respectively fixedly connected to the flip plates of the flip mechanism, the lifting gears are connected to the rotating shafts of the corresponding lifting motors, and the lifting gears are meshed with the corresponding lifting racks to form a gear and rack transmission pair.

[0012] A further technical solution of the present invention is: the second rotating mechanism includes a platform connecting frame, a second rotating bearing, a supporting connecting plate and a second rotating motor, the supporting connecting plate is connected to the lower end of the vertical arm, the upper end of the platform connecting frame is connected to the supporting connecting plate through the second rotating bearing, the second rotating motor is fixed on the supporting connecting plate, and the driving gear of the second rotating motor is meshed with the outer ring gear of the second rotating bearing.

[0013] A further technical solution of the present invention is: two first folding hinge seats, two second folding hinge seats and two platform retracting cylinders are respectively provided on the lower side of the platform connecting frame, the two first folding hinge seats are respectively symmetrically welded to the two ends of the cross bar Ⅰ on the lower side of the platform connecting frame, and the two first folding hinge seats are respectively hinged to the upper positions on both sides of the end of the working platform; the two second folding hinge seats are respectively symmetrically welded to the two ends of the cross bar Ⅱ opposite to the cross bar Ⅰ, the rear ends of the cylinder bodies of the platform retracting cylinders are respectively hinged to the corresponding second folding hinge seats, the front ends of the telescopic rods of the platform retracting cylinders are respectively hinged to the lower positions on both sides of the end of the working platform, and the telescopic rods of the platform retracting cylinders can be extended and retracted to make the working platform flip and fold around the first folding hinge seats.

[0014] Another technical solution proposed by the present invention is: a method for using a bridge inspection mobile platform, comprising the following steps:

[0015] S1. Use a traveling vehicle to move the folded mobile platform to the side of the bridge;

[0016] S2, driving the first slewing bearing to rotate by the first slewing motor, driving the slewing bearing arm to rotate on the traveling vehicle, so that the end of the slewing bearing arm connected to the vertical arm faces the outside of the bridge;

[0017] S3, controlling the telescopic rod of the flip cylinder to retract, so that the flip plate flips and rotates around the first flip hinge seat until the vertical arm is in a vertical state;

[0018] S4, controlling the telescopic rod of the platform retracting and extending cylinder to retract, so that the working platform is turned over and unfolded around the first folding hinge seat until the working platform is in a horizontal state;

[0019] S5, controlling the lifting motor to drive the lifting gear to rotate, and the lifting rack meshing with the lifting gear drives the vertical arm to move downward, so that the working platform reaches the vicinity of the working position;

[0020] S6, driving the second slewing bearing to rotate by the second slewing motor, driving the working platform to rotate at the lower end of the vertical arm, so that the working platform rotates to the working position on the lower side of the bridge;

[0021] S7. According to the working needs, control the extension and retraction of the working platform so that the working platform can extend to a larger working range.

[0022] The bridge inspection mobile platform of the present invention has the following beneficial effects due to the adoption of the above solution:

[0023] 1. The bridge inspection mobile platform of the present invention adopts a truss structure, which is flexible in movement, good in stability and has a large carrying capacity. Through the slewing support arm, the vertical arm and the working platform, in conjunction with the turning mechanism, the lifting mechanism and the slewing mechanism, a three-dimensional space operation system with six degrees of freedom can be formed, and the working platform can be adjusted to any working position on the lower side of the bridge, which greatly increases the depth and working range of the lower bridge, and forms an independent working platform under the bridge, which is suitable for daily bridge maintenance and inspection after special accidents, and can also be used for bridge drainage engineering construction, bright engineering construction, painting engineering construction and bridge pier fence construction, etc., and the operation of each mechanism of the present invention is provided with a manual operation mode and a remote control operation mode, which can be moved at any time, and can allow inspection personnel to enter the working position for inspection or maintenance work safely, quickly and efficiently, and does not affect traffic during work and can travel slowly without retracting the truss assembly, and has the advantages of convenient construction, flexible work, high operation efficiency, no interruption of traffic, high safety and reliability, etc.

[0024] 2. The present invention provides a lifting mechanism and a second rotating mechanism, so that the working platform of the present invention has the functions of lifting up and down and rotating 180 degrees, and the working platform is a telescopic structure, which can realize the coverage inspection of the outer surface of the bottom of the large bridge within a range of 6 meters, which is convenient for the inspection and maintenance of the bridge;

[0025] 3. The present invention is provided with four hydraulic lifting supports on the side of the chassis of the traveling vehicle, through which the traveling vehicle can be lifted away from the ground, so as to conveniently load the equipment onto the transport flatbed truck, greatly improving the convenience of transfer transportation; in addition, the traveling vehicle of the present invention is provided with a steering axle and a driving axle, which can realize forward, backward, steering and load functions through the driving operation of the motor, and realize a maximum rated load of 500kg and a maximum concentrated load of 300kg, with a high carrying capacity; and a fixed counterweight is provided on the traveling vehicle, which enhances the stability of the bridge inspection mobile platform;

[0026] 4. The present invention connects the vertical arm to the slewing support arm by arranging a limit guide wheel and two sliding guide wheels on the turning mechanism. The limit guide wheel and the sliding guide wheel cooperate to limit the vertical arm to move only up and down in the vertical direction and not to swing in the front, back, left and right directions, thereby achieving precise limit and guidance, preventing the vertical arm from swinging during operation, improving safety, reducing swing wear, and increasing the service life of the equipment;

[0027] 5. The working platform of the present invention adopts a telescopic structure, which can greatly increase the working radius of the present invention when unfolded.

[0028] The following is a further description of a bridge inspection mobile platform and a method of using the same in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a bridge detection mobile platform in a folded state according to the present invention;

[0030] Figure 2 This is one of the structural schematic diagrams of a bridge inspection mobile platform in a fully deployed state according to the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the traveling vehicle;

[0032] Figure 4 It is a structural diagram of the traveling vehicle in the lifting state;

[0033] Figure 5 It is a schematic diagram of the structure in which the slewing support arm is connected to the traveling vehicle;

[0034] Figure 6 It is a structural schematic diagram of a slewing support arm and a turning mechanism;

[0035] Figure 7 yes Figure 6 A schematic diagram of the structure in another direction;

[0036] Figure 8 yes Figure 6 The enlarged view of point A in the middle;

[0037] Fig. 9 1 is a schematic diagram of the structure of the limiting guide wheel;

[0038] Fig.10 It is one of the structural diagrams of the connection between the vertical arm and the flip mechanism;

[0039] Fig.11 This is the second structural diagram of the connection between the vertical arm and the flip mechanism;

[0040] Fig.12 It is a schematic diagram of the structure of the connection between the working platform and the vertical arm;

[0041] Fig.13 yes Fig.12 The enlarged view of point B in the middle;

[0042] Fig.14 It is a schematic diagram of the structure of the working platform and the vertical arm in the folded state;

[0043] Fig.15 yes Fig.14 Enlarged view of point C in the middle;

[0044] Fig.16 This is a state display diagram of step S2 used in the present invention;

[0045] Fig.17 This is a state display diagram of step S3 used in the present invention;

[0046] Fig.18 This is a state display diagram of step S4 used in the present invention;

[0047] Fig.19 It is a state display diagram of step S5 used in the present invention;

[0048] Fig. 20 is a state display diagram of step S6 used in the present invention;

[0049] Description of the accompanying figures: 1-traveling vehicle, 11-chassis, 12-steering axle, 13-hydraulic lifting support, 14-driving axle, 15-telescopic cross bar, 2-truss assembly, 21-slewing support arm, 211-guardrail, 212-counterweight, 22-first slewing mechanism, 221-support arm connecting frame, 222-first slewing support, 223-first slewing motor, 23-turning mechanism, 231-turning plate, 2311-first turn-over articulated seat, 2312-second turn-over articulated seat, 232-side plate, 233-turning cylinder, 234-limiting guide wheel group, 2341-limiting guide wheel, 2342- Rotating shaft I, 2343-guide wheel seat, 2344-sliding guide wheel, 2345-rotating shaft II, 2346-fixed bracket, 2347-slide groove, 24-vertical arm, 241-guide rod, 25-second rotating mechanism, 251-platform connecting frame, 2511-first folding hinge seat, 2512-second folding hinge seat, 2513-cross bar I, 2514-cross bar II, 252-support connecting plate, 253-second rotary motor, 254-second rotary bearing, 255-platform retractable cylinder, 26-working platform, 271-lifting motor, 272-lifting gear, 273-lifting rack. DETAILED DESCRIPTION

[0050] Embodiment 1: Figures 1 to 15 As shown, the present invention provides a mobile bridge inspection platform, including a traveling mechanism and a truss assembly 2, wherein the truss assembly 2 is connected to the traveling mechanism via a first slewing mechanism 22, and the truss assembly 2 includes a slewing support arm 21, a vertical arm 24 and a working platform 26, wherein both the vertical arm 24 and the working platform 26 are truss structures.

[0051] The walking mechanism of the present invention is a walking vehicle 1 with a four-wheel structure, and the walking vehicle 1 includes a chassis 11, a steering axle 12 and a driving axle 14. The steering axle 12 and the driving axle 14 are respectively connected to the bottom of the chassis 11. In this embodiment, the connection between the steering axle 12, the driving axle 14 and the chassis 11 is a prior art and is not described in detail here. It is worth mentioning that the chassis 11 of the walking vehicle 1 of the present invention is connected to four hydraulic lifting supports 13 in a rectangular distribution on the side, and the hydraulic lifting supports 13 are respectively connected to the side of the chassis 11 through a telescopic cross bar 15. The walking vehicle 1 can be lifted away from the ground through the hydraulic lifting supports 13. Since the present invention is positioned as a mobile platform, it only needs to move in a small range within the work site, which can be met by its own steering axle 12 and driving axle 14. When it is necessary to transfer, it can be achieved by a transport truck. During transportation, the telescopic cross bar 15 is first stretched to make the hydraulic lifting support 13 away from the chassis 11, and then the traveling vehicle 1 is lifted away from the ground by the hydraulic lifting support 13. After the transport flatbed truck drives under the traveling vehicle 1, the hydraulic lifting support 13 is controlled to shrink and the traveling vehicle 1 is placed on the transport flatbed truck and fixed to realize the transfer transportation. After the present invention is transported to the work site, the traveling vehicle 1 is also lifted by the hydraulic lifting support 13, and after the transport flatbed truck drives away, the traveling vehicle 1 is lowered to the ground to start the operation. The present invention greatly improves the convenience of transfer transportation by arranging the hydraulic lifting support 13 on the traveling vehicle 1.

[0052] The slewing support arm 21 is horizontally arranged and connected above the chassis 11 of the traveling vehicle 1 through the first slewing mechanism 22; the first slewing mechanism 22 of the present invention includes a supporting arm connecting frame 221, a first slewing support 222 and a first slewing motor 223, the lower end of the supporting arm connecting frame 221 is connected to the chassis 11 of the traveling vehicle 1 through the first slewing support 222, the first slewing motor 223 is fixed on the chassis 11 of the traveling vehicle 1, and the driving gear of the first slewing motor 223 is meshed with the inner ring gear of the first slewing support 222, the slewing support arm 21 is fixedly connected to the upper end of the supporting arm connecting frame 221, the first slewing motor 223 can drive the first slewing support 222 to rotate, and the slewing support arm 21 is driven to rotate on the traveling vehicle 1 through the supporting arm connecting frame 221, so as to achieve the purpose of adjusting the orientation of the slewing support arm 21. It is worth mentioning that a guardrail 211 is provided at one end of the slewing support arm 21 of the present invention, which is close to the flipping mechanism 23, and a counterweight 212 is provided at one end of the slewing support arm 21 which is away from the flipping mechanism 23. The guardrail 211 can play a protective role and reduce safety hazards, while the counterweight 212 can ensure that the measuring mobile platform will not tip over during operation, thereby ensuring safety.

[0053] The vertical arm 24 of the present invention is connected to the end of the slewing support arm 21 away from the first slewing mechanism 22 through the flip mechanism 23. The flip mechanism 23 includes a flip plate 231, two side plates 232, two flip cylinders 233 and a guide limiter for connecting with the vertical arm 24. The two side plates 232 are symmetrically welded to the two sides of the flip plate 231. The two sides of the rear side of the flip plate 231 are respectively provided with a first flip hinge seat 2311 and a second flip hinge seat 2312. The two side surfaces of the front end of the slewing support arm 21 are respectively connected to the first flip hinge seat 2311 through a rotating shaft. The rear ends of the two flip cylinders 233 are respectively hinged to the two side surfaces of the slewing support arm 21, and the front ends of the telescopic rods of the flip cylinders 233 are respectively hinged to the corresponding second flip hinge seats 2312. The telescopic rod of the flip cylinder 233 can make the flip plate 231 flip and rotate around the first flip hinge seat 2311 by telescoping. The guide limit device includes four limit guide wheel groups 234, which are distributed in a rectangular shape and are respectively positioned at the upper and lower ends of the two side plates 232. The two sides of the side where the vertical arm 24 is connected to the flip mechanism 23 are respectively provided with limit guide wheel groups 2 34 cooperates with the guide rod 241, the vertical arm 24 is vertically arranged and located between the horizontally opposite limiting guide wheel groups 234, so that the vertical arm 24 can slide up and down in the vertical direction; in this embodiment, the limiting guide wheel group 234 includes a limiting guide wheel 2341 and two sliding guide wheels 2344, the limiting guide wheel 2341 is respectively connected to the corresponding side plate 232 through the rotating shaft I 2342 and the guide wheel seat 2343, and the axis of the limiting guide wheel 2341 is perpendicular to the flip plate 231, and the circumferential surface of the middle part of the limiting guide wheel 2341 is recessed with a slide groove 2347, and the vertical arm The guide rod 241 of 24 is positioned in the sliding groove 2347 of the corresponding limiting guide wheel 2341, so as to slide with the limiting guide wheel 2341; the two sliding guide wheels 2344 are respectively positioned on the outside of the limiting guide wheel 2341 through the rotating shaft II 2345 and the fixed bracket 2346, and the two sliding guide wheels 2344 are relatively arranged on the front and rear sides of the guide rod 241, and the axis of the sliding guide wheel 2344 is perpendicular to the movement direction of the guide rod 241, and the guide rod 241 is located between the corresponding two sliding guide wheels 2344 and in sliding contact with the sliding guide wheels 2344. The present invention uses four limiting guide wheels 2341 of the guide limiting device to limit the vertical arm 24 from swinging in the left and right directions, while the sliding guide wheel 2344 arranged at the corresponding position of the limiting guide wheel 2341 can limit the vertical arm 24 from swinging in the front and back directions. By cooperating with the limiting guide wheel 2341 and the sliding guide wheel 2344, the vertical arm 24 can be limited to move up and down in the vertical direction but cannot swing in the front, back, left and right directions, thereby achieving precise limiting and guiding, preventing the vertical arm 24 from swinging during operation, improving safety, reducing swinging wear, and increasing the service life of the equipment.

[0054] The vertical arm 24 is also provided with a lifting mechanism for controlling the vertical arm 24 to rise or fall. In the present embodiment, the lifting mechanism has two groups, which respectively include a lifting motor 271, a lifting gear 272 and a lifting rack 273. The lifting rack 273 is relatively arranged on the two inner sides of the side where the vertical arm 24 is connected to the flip mechanism 23; the lifting motors 271 are respectively fixedly connected to the flip plates 231 of the flip mechanism 23, the lifting gears 272 are connected to the rotating shafts of the corresponding lifting motors 271, and the lifting gears 272 are meshed with the corresponding lifting racks 273 to form a gear-rack transmission pair. The lifting motor 271 can drive the lifting gear 272 to rotate when it is working, and the lifting rack 273 meshed with the lifting gear 272 drives the vertical arm 24 to move downward.

[0055] The working platform 26 is connected to the lower end of the vertical arm 24 through the second slewing mechanism 25, and the working platform 26 is hingedly connected to the second slewing mechanism 25. The second slewing mechanism 25 of the present invention includes a platform connecting frame 251, a second slewing bearing 254, a supporting connecting plate 252 and a second slewing motor 253. The supporting connecting plate 252 is connected to the lower end of the vertical arm 24. The upper end of the platform connecting frame 251 is connected to the supporting connecting plate 252 through the second slewing bearing 254. The second slewing motor 253 is fixed on the supporting connecting plate 252, and the driving gear of the second slewing motor 253 is meshed with the outer ring gear of the second slewing bearing 254. The lower side of the platform connecting frame 251 is respectively provided with two first folding hinge seats 2511, two second folding hinge seats 2521 and 2522. The connection seat 2512 and the two platform retracting and releasing oil cylinders 255, the two first folding hinge seats 2511 are respectively symmetrically welded to the two ends of the cross bar I 2513 on the lower side of the platform connecting frame 251, and the two first folding hinge seats 2511 are respectively hinged to the upper positions on both sides of the end of the working platform 26; the two second folding hinge seats 2512 are respectively symmetrically welded to the two ends of the cross bar II 2514 opposite to the cross bar I 2513, the rear end of the cylinder body of the platform retracting and releasing oil cylinder 255 is respectively hinged to the corresponding second folding hinge seats 2512, and the front end of the telescopic rod of the platform retracting and releasing oil cylinder 255 is respectively hinged to the lower positions on both sides of the end of the working platform 26. The telescopic rod of the platform retracting and releasing oil cylinder 255 can be extended and retracted to make the working platform 26 flip and fold around the first folding hinge seat 2511. In this embodiment, the working platform 26 adopts a telescopic structure working platform, which can greatly increase the working radius of the present invention when unfolded.

[0056] The traveling vehicle 1 of the present invention is also provided with a hydraulic station for providing hydraulic power to hydraulic components such as the hydraulic lifting support 13, the tilting cylinder 233, the platform retracting cylinder 255, and the hydraulic cylinder 27. At the same time, it is also provided with a battery and a gasoline generator for providing power to the traveling motor, the rotating motor, the hydraulic station and the electronic control system of the traveling vehicle 1. In addition, the traveling vehicle 1 is also provided with a fixed counterweight, which enhances the stability of the bridge inspection mobile platform of the present invention.

[0057] Embodiment 2: The present invention also provides a method for using a bridge inspection mobile platform, comprising the following steps:

[0058] S1, driving the folded mobile platform to the side of the bridge by the traveling vehicle 1;

[0059] S2, such as Fig.16 As shown, the first slewing support 222 is driven to rotate by the first slewing motor 223, driving the slewing support arm 21 to rotate on the traveling vehicle 1, so that the end of the slewing support arm 21 connected to the vertical arm 24 faces the outside of the bridge;

[0060] S3, such as Fig.17 As shown, the telescopic rod of the control flip cylinder 233 is contracted, so that the flip plate 231 flips and rotates around the first flip hinge seat 2311 until the vertical arm 24 is in a vertical state;

[0061] S4, such as Fig.18 As shown, the telescopic rod of the control platform retracting cylinder 255 is retracted, so that the working platform 26 is turned over and unfolded around the first folding hinge seat 2511 until the working platform 26 is in a horizontal state;

[0062] S5, such as Fig.19 As shown, the lifting motor 271 is controlled to drive the lifting gear 272 to rotate, and the lifting rack 273 meshing with the lifting gear 272 drives the vertical arm 24 to move downward, so that the working platform 26 reaches the vicinity of the working position;

[0063] S6, such as Fig. 20 As shown, the second slewing bearing 254 is driven to rotate by the second slewing motor 253, driving the working platform 26 to rotate at the lower end of the vertical arm 24, so that the working platform 26 rotates to the working position on the lower side of the bridge;

[0064] S7. According to the working requirements, the working platform 26 is controlled to extend and retract, so that the working platform 26 extends to a larger working range.

[0065] After the bridge inspection and maintenance work is completed, the above steps are reversed to fold the truss assembly 2, and then the traveling vehicle 1 is lifted away from the ground by the hydraulic lifting support 13. After the transport flatbed truck enters under the traveling vehicle 1, the hydraulic lifting support 13 is controlled to retract and the traveling vehicle 1 is placed on the transport flatbed truck and fixed to realize the transfer transportation. The bridge inspection mobile platform of the present invention is easy to operate, has little shaking when it is deployed, and has high safety.

[0066] The above embodiments are only preferred embodiments of the present invention. The structure of the present invention is not limited to the forms listed in the above embodiments. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bridge inspection mobile platform, comprising a traveling mechanism and a truss assembly (2), wherein the truss assembly (2) is connected to the traveling mechanism via a first slewing mechanism (22), the traveling mechanism is a traveling vehicle (1) having a four-wheel structure, comprising a chassis (11), a steering axle (12) and a driving axle (14), wherein the steering axle (12) and the driving axle (14) are respectively connected below the chassis (11); characterized in that: The truss assembly (2) comprises a slewing support arm (21), a vertical arm (24) and a work platform (26), wherein the vertical arm (24) and the work platform (26) are truss structures; the slewing support arm (21) is horizontally arranged and connected to the upper part of the chassis (11) of the traveling vehicle (1) through a first slewing mechanism (22); the vertical arm (24) is connected to an end of the slewing support arm (21) away from the first slewing mechanism (22) through a flipping mechanism (23); the flipping mechanism (23) comprises a flipping plate (231), two side plates (232), two flipping cylinders (233) and a guide limit device for connecting to the vertical arm (24); the two side plates (232) are symmetrically welded to each other. On both sides of the flip plate (231), a first flip hinge seat (2311) and a second flip hinge seat (2312) are respectively provided on both sides of the rear side of the flip plate (231); the two side sides of the front end of the slewing support arm (21) are respectively hinged to the first flip hinge seat (2311) via a rotating shaft; the rear ends of the cylinder bodies of the two flip cylinders (233) are respectively hinged to the two side sides of the slewing support arm (21); the front ends of the telescopic rods of the flip cylinders (233) are respectively hinged to the corresponding second flip hinge seats (2312); the telescopic rods of the flip cylinders (233) are retracted to allow the flip plate (231) to flip and rotate around the first flip hinge seat (2311); the guide limit device comprises four limit stops. The guide wheel group (234) is arranged in a rectangular shape and is respectively positioned at the upper end and the lower end of the two side plates (232). The two sides of the side where the vertical arm (24) is connected to the flip mechanism (23) are respectively provided with guide rods (241) that cooperate with the limit guide wheel group (234). The vertical arm (24) is vertically arranged and located between the limit guide wheel groups (234) that are opposite to each other horizontally, so that the vertical arm (24) can slide up and down in the vertical direction. The flip mechanism (23) is also provided with a lifting mechanism for controlling the vertical arm (24) to rise or fall. The working platform (26) is connected to the lower end of the vertical arm (24) through a second rotating mechanism (25). (26) is hingedly connected to the second rotating mechanism (25); the limiting guide wheel group (234) includes a limiting guide wheel (2341) and two sliding guide wheels (2344); the limiting guide wheel (2341) is connected to the corresponding side plate (232) through the rotating shaft I (2342) and the guide wheel seat (2343), and the axis of the limiting guide wheel (2341) is perpendicular to the flip plate (231); the circumferential surface of the middle part of the limiting guide wheel (2341) is recessed and provided with a sliding groove (2347); the guide rod (241) of the vertical arm (24) is positioned in the sliding groove (2347) of the corresponding limiting guide wheel (2341), so as to slide with the limiting guide wheel (2341);The two sliding guide wheels (2344) are respectively positioned outside the limiting guide wheel (2341) through the rotating shaft II (2345) and the fixed bracket (2346), and the two sliding guide wheels (2344) are relatively arranged on the front and rear sides of the guide rod (241), the axis of the sliding guide wheel (2344) is perpendicular to the movement direction of the guide rod (241), and the guide rod (241) is located between the two corresponding sliding guide wheels (2344) and is in sliding contact with the sliding guide wheels (2344); the end of the slewing support arm (21) close to the flip mechanism (23) is provided with a guardrail (211), and the end of the slewing support arm (21) away from the flip mechanism (23) is provided with a counterweight (212). ; 2. A bridge inspection mobile platform as claimed in claim 1, characterized in that: The chassis (11) of the traveling vehicle (1) is connected to four hydraulic lifting supports (13) in a rectangular arrangement on the side surface thereof. The hydraulic lifting supports (13) are respectively connected to the side surfaces of the chassis (11) via telescopic cross bars (15). The traveling vehicle (1) can be lifted away from the ground via the hydraulic lifting supports (13).

3. A bridge inspection mobile platform as claimed in claim 1, characterized in that: The first slewing mechanism (22) comprises a support arm connecting frame (221), a first slewing bearing (222) and a first slewing motor (223); the lower end of the support arm connecting frame (221) is connected to the chassis (11) of the traveling vehicle (1) via the first slewing bearing (222); the first slewing motor (223) is fixed to the chassis (11) of the traveling vehicle (1), and the driving gear of the first slewing motor (223) is meshed with the inner ring gear of the first slewing bearing (222); the slewing support arm (21) is fixedly connected to the upper end of the support arm connecting frame (221).

4. A bridge inspection mobile platform as claimed in claim 1, characterized in that: The lifting mechanism comprises two groups, each comprising a lifting motor (271), a lifting gear (272) and a lifting rack (273); the lifting rack (273) is relatively arranged on two inner sides of a side where the vertical arm (24) is connected to the flip mechanism (23); the lifting motor (271) is respectively fixedly connected to the flip plate (231) of the flip mechanism (23); the lifting gear (272) is connected to the rotating shaft of the corresponding lifting motor (271); and the lifting gear (272) is meshed with the corresponding lifting rack (273) to form a gear-rack transmission pair.

5. The mobile bridge inspection platform according to claim 1, characterized in that: The second rotary mechanism (25) comprises a platform connecting frame (251), a second rotary bearing (254), a supporting connecting plate (252) and a second rotary motor (253); the supporting connecting plate (252) is connected to the lower end of the vertical arm (24); the upper end of the platform connecting frame (251) is connected to the supporting connecting plate (252) via the second rotary bearing (254); the second rotary motor (253) is fixed on the supporting connecting plate (252), and the driving gear of the second rotary motor (253) is meshed with the outer ring gear of the second rotary bearing (254).

6. A bridge inspection mobile platform as claimed in claim 5, characterized in that: The lower side of the platform connecting frame (251) is respectively provided with two first folding hinge seats (2511), two second folding hinge seats (2512) and two platform retracting and extending cylinders (255); the two first folding hinge seats (2511) are respectively symmetrically welded to the two ends of the cross bar I (2513) on the lower side of the platform connecting frame (251), and the two first folding hinge seats (2511) are respectively hinged to the upper positions on both sides of the end of the working platform (26); the two second folding hinge seats (2512) are respectively hinged to the upper positions on both sides of the end of the working platform (26); the two second ... The two ends of the cross bar (2512) are symmetrically welded to the two ends of the cross bar (2514) opposite to the cross bar (2513), the rear ends of the cylinder body of the platform retracting cylinder (255) are respectively hinged to the corresponding second folding hinge seats (2512), and the front ends of the telescopic rods of the platform retracting cylinder (255) are respectively hinged to the positions below the two sides of the end of the working platform (26). The telescopic rods of the platform retracting cylinder (255) can be extended and retracted to enable the working platform (26) to flip and fold around the first folding hinge seat (2511).

7. The method for using a bridge inspection mobile platform according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Using the traveling vehicle (1), the mobile platform in the folded state is driven to the side of the bridge; S2, driving the first slewing support (222) to rotate by means of the first slewing motor (223), thereby driving the slewing support arm (21) to rotate on the traveling vehicle (1), so that the end of the slewing support arm (21) connected to the vertical arm (24) faces the outside of the bridge; S3, controlling the telescopic rod of the flip cylinder (233) to retract, so that the flip plate (231) flips and rotates around the first flip hinge seat (2311) until the vertical arm (24) is in a vertical state; S4, controlling the telescopic rod of the platform retracting and extending cylinder (255) to retract, so that the working platform (26) is turned over and unfolded around the first folding hinge seat (2511), until the working platform (26) is in a horizontal state; S5, controlling the lifting motor (271) to drive the lifting gear (272) to rotate, and the lifting rack (273) meshing with the lifting gear (272) drives the vertical arm (24) to move downward, so that the working platform (26) reaches the vicinity of the working position; S6, driving the second slewing bearing (254) to rotate by means of the second slewing motor (253), thereby driving the working platform (26) to rotate at the lower end of the vertical arm (24), so that the working platform (26) rotates to a working position on the lower side of the bridge; S7. According to the operation requirements, the operation platform (26) is controlled to be extended and retracted, so that the operation platform (26) is extended to a larger operation range.

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