A self-propelled maintenance device suitable for dumbbell-shaped arch ribs

Abstract

The application discloses a self-walking maintenance device suitable for a dumbbell-shaped arch rib, which comprises a working platform, a limiting system, a walking system, a balancing system and a braking system. The working platform is used for maintenance work of workers. The walking system is arranged at the bottom of the working platform and is attached to the arch rib at the bottom of the walking system, so as to drive the working platform to walk along the arch rib. The balancing system is arranged at the bottom of the working platform and is used for stability adjustment of the working platform, so that the working platform can be kept in a horizontal state. The braking system is used for braking of the device on the arch rib.

Description

Technical Field

[0001] This invention relates to a self-propelled maintenance device suitable for dumbbell-shaped arch ribs, belonging to the technical field of bridge maintenance. Background Technology

[0002] For the under-deck steel-concrete composite beam-arch bridge, the arch rib is mostly a dumbbell-shaped steel-concrete structure composed of two steel pipes and connecting steel plates. In order to install the hangers and facilitate the later inspection and maintenance of the anchor heads on the hangers, the arch rib is equipped with upper anchor holes and anchor head cover plates. After years of operation, the upper anchor heads need to be inspected and maintained.

[0003] Currently, the inspection and maintenance of the upper anchor head mainly involves setting up maintenance walkways on the arch and using aerial work platforms. Setting up maintenance walkways on the arch is costly and requires maintenance, while using aerial work platforms requires traffic control, has low inspection and maintenance efficiency, and also faces the safety risk of vehicles colliding with the work area. A self-propelled intelligent platform has also emerged in the existing technology, but it can only be used on specific types of arch ribs. For dumbbell-shaped arch ribs, it lacks a limiting device and is prone to tipping over during movement. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a self-propelled maintenance device suitable for dumbbell-shaped arch ribs, thus solving the problem of easy tipping over in existing self-propelled arch rib devices.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-propelled maintenance device suitable for dumbbell-shaped arch ribs includes a work platform, a limit system, and a walking system.

[0007] The work platform is used by workers to perform maintenance tasks;

[0008] The walking system is located at the bottom of the work platform, and the bottom of the walking system is attached to the arch rib to drive the work platform to move along the arch rib;

[0009] The limiting system includes a first vertical rod, a second vertical rod, a connecting rod, and limiting wheels. The first vertical rod is symmetrically arranged at both ends of the arch rib and vertically connected to the bottom of the rear end of the working platform. The second vertical rod is symmetrically arranged at both ends of the arch rib and vertically connected to the bottom of the front end of the working platform. The connecting rod connects the first vertical rod and the second vertical rod at both ends. Two sets of limiting wheels are provided on the inner side of the first vertical rod. The set of limiting wheels located on the upper inner side of the first vertical rod contacts the lower semicircular surface of the upper steel pipe of the arch rib, and the set of limiting wheels located on the lower inner side of the first vertical rod contacts the upper semicircular surface of the lower steel pipe of the arch rib. Two sets of limiting wheels are also provided on the inner side of the second vertical rod. The set of limiting wheels located on the upper inner side of the second vertical rod contacts the lower semicircular surface of the upper steel pipe of the arch rib, and the set of limiting wheels located on the lower inner side of the second vertical rod contacts the upper semicircular surface of the lower steel pipe of the arch rib.

[0010] Furthermore, the aforementioned connecting rod is also equipped with an automatic hydraulic telescopic rod.

[0011] Furthermore, the aforementioned work platform includes a base, railings, a first upper crossbeam, a second upper crossbeam, and a grating plate.

[0012] The base includes platform crossbeams and platform longitudinal beams that are fixedly connected to each other. The platform crossbeams are distributed laterally along the base, and the platform longitudinal beams are distributed longitudinally along the base. Vertical railings are also connected to the base, and gratings are arranged on the base.

[0013] The first upper crossbeam is connected to the bottom of the rear end of the base, and the second upper crossbeam is connected to the bottom of the front end of the base.

[0014] Furthermore, the aforementioned work platform also includes a movable grid plate, which is arranged in the middle of the base.

[0015] Furthermore, the aforementioned walking system includes a geared motor, a first transmission gear, a second transmission gear, a transmission shaft, a driving wheel, and a driven wheel;

[0016] The geared motor is fixed at the front end of the upper part of the base. The output end of the geared motor is connected to the first transmission gear. The second transmission gear is fixedly connected to the transmission shaft and coaxially arranged. The two ends of the transmission shaft are also connected to the drive wheel respectively. The first transmission gear meshes with the second transmission gear. The top of the drive wheel is fixedly connected to the bottom of the base and the bottom of the drive wheel is in contact with the arch rib. The top of the driven wheel is connected to the bottom of the base and the bottom of the driven wheel is in contact with the arch rib.

[0017] Furthermore, the aforementioned geared motor has a self-locking function.

[0018] Furthermore, the aforementioned also includes a balancing system, which comprises a lower crossbeam, a hydraulic control station, a first hydraulic telescopic rod, and a third hydraulic telescopic rod;

[0019] The hydraulic control station is fixed at the upper rear end of the base, and the hydraulic control station is connected to the first hydraulic telescopic rod and the third hydraulic telescopic rod through hydraulic oil pipes;

[0020] The upper part of the first hydraulic telescopic rod is connected to the base, and the lower part is connected to the driven wheel;

[0021] The upper part of the third hydraulic telescopic rod is connected to the first upper crossbeam, and the lower part is connected to the lower crossbeam. The lower crossbeam is connected to the top of the first vertical rod.

[0022] Furthermore, the aforementioned also includes a braking system, which comprises a second hydraulic telescopic rod and brake friction blocks.

[0023] The second hydraulic telescopic rod is connected to the hydraulic control station via a hydraulic oil pipe. The upper part of the second hydraulic telescopic rod is connected to the bottom of the base, and the lower part of the second hydraulic telescopic rod is hinged to the brake friction block.

[0024] The beneficial effects achieved by this invention are as follows:

[0025] 1. By setting limit wheels, which abut against the upper and lower steel pipes of the arch rib respectively, when the maintenance device moves, the limit wheels rotate along the arch rib and at the same time abut against it to prevent the device from overturning.

[0026] 2. Driven by a geared motor, it can climb the arch ribs on its own;

[0027] 3. As the curvature of the arch rib changes, adjust the lengths of the first and third hydraulic telescopic rods to adjust the stability of the work platform and keep it level.

[0028] 4. By adjusting the length of the second hydraulic telescopic rod and the self-locking function of the reduction motor, the device can be braked on the arch rib. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the elevation structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the planar structure of the present invention;

[0031] Figure 3 This is the present invention. Figure 1 Sectional view of AA;

[0032] Figure 4 This is the present invention. Figure 1 BB section view;

[0033] Figure 5 This is the present invention. Figure 1 CC section view.

[0034] The meanings of the reference numerals in the attached diagram are as follows: 1-Arch rib; 2-Hanging rod; 3-Upper anchor head; 4-Anchor head cover plate; 5-Working platform; 6-Platform crossbeam; 7-Platform longitudinal beam; 8-Handrail; 9-First upper crossbeam; 10-Second upper crossbeam; 11-Grate plate; 12-Modible grating plate; 13-Lower crossbeam; 14-First vertical rod; 15-Second vertical rod; 16-Connecting rod; 17-Limiting wheel; 18-Reduction motor; 19-First transmission gear; 20-Second transmission gear; 21-Drive shaft; 22-Driving wheel; 23-Driven wheel; 24-Hydraulic control station; 25-First hydraulic telescopic rod; 26-Second hydraulic telescopic rod; 27-Third hydraulic telescopic rod; 28-Brake friction block; 29-Automatic hydraulic telescopic rod. Detailed Implementation

[0035] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0036] This embodiment discloses a self-propelled maintenance device suitable for dumbbell-shaped arch ribs, such as... Figures 1-5 As shown, it includes a work platform 5, a limit system, a walking system, a balance system, and a braking system.

[0037] The frame of the work platform 5 is prefabricated by integral welding according to the dimensions of the arch ribs, such as Figure 1 , Figure 2 As shown, the platform includes a platform crossbeam 6, a platform longitudinal beam 7, a railing 8, and a first upper crossbeam 9 and a second upper crossbeam 10 welded to the bottom of the work platform 5. A grating plate 11 is installed on the work platform 5, with a movable grating plate 12 in the middle position, which is used by workers to open it and enter the arch rib for maintenance work.

[0038] Combination and Figure 3 , Figure 4 It can be seen that the limiting system consists of a first vertical rod 14, a second vertical rod 15, a connecting rod 16, and a limiting wheel 17. The second vertical rod 15 is welded to the second upper crossbeam 10. The first vertical rod 14 and the second vertical rod 15 are hinged together by the connecting rod 16. The connecting rod 16 is equipped with an automatic hydraulic telescopic rod 29 to ensure the stability of the entire frame. The limiting wheel 17 is welded to the first vertical rod 14 and the second vertical rod 15 and rests at 45° against the upper and lower steel pipes of the arch rib. When the maintenance device moves, the limiting wheel 17 rotates along the arch rib and rests against the arch rib to prevent the device from overturning.

[0039] Depend on Figure 2 and Figure 5It is known that the walking system includes a geared motor 18, a first transmission gear 19, a second transmission gear 20, a transmission shaft 21, a drive wheel 22, and a driven wheel 23. The geared motor 18 has a self-locking function and is fixed to the working platform by bolts. The first transmission gear 19 is connected to the geared motor 18. The two drive wheels 22 are welded to the working platform and connected by the transmission shaft 21. The second transmission gear 20 is provided on the transmission shaft 21. The first transmission gear 19 meshes with the second transmission gear 20. When the geared motor 18 is running, the first transmission gear 19 drives the transmission shaft 21 to rotate through meshing with the second transmission gear 20, so that the drive wheel 22 can move, thereby driving the driven wheel 23 to rotate, realizing the movement of the entire maintenance device on the arch rib.

[0040] Combination Figure 1 The balancing system consists of a lower crossbeam 13, a hydraulic control station 24, a first hydraulic telescopic rod 25, and a third hydraulic telescopic rod 27. The first vertical rod 14 is welded to the lower crossbeam 13. The hydraulic control station 24 is fixed to the work platform 5 with bolts and connected to the first hydraulic telescopic rod 25 and the third hydraulic telescopic rod 27 through hydraulic oil pipes. The upper part of the first hydraulic telescopic rod 25 is connected to the work platform 5, and the lower part is connected to the driven wheel 23. The upper part of the third hydraulic telescopic rod 27 is connected to the first upper crossbeam 9, and the lower part is connected to the lower crossbeam 13. When the maintenance device moves, the hydraulic control station 24 is activated. As the curvature of the arch rib changes, the lengths of the first hydraulic telescopic rod 25 and the third hydraulic telescopic rod 27 are adjusted. The connecting rod 16 between the first vertical rod 14 and the second vertical rod 15 is an automatic hydraulic telescopic rod 29 that rotates and extends and retracts as the curvature of the arch rib changes, thereby enabling the limiting system to adapt to the changes in the curvature of the arch rib and maintain the horizontal state of the work platform.

[0041] Combination Figure 1 The braking system includes a second hydraulic telescopic rod 26 and a brake friction block 28. The second hydraulic telescopic rod 26 is connected to the hydraulic control station 24 through a hydraulic oil pipe. The upper part of the second hydraulic telescopic rod 26 is welded to the working platform 5, and the lower part is connected to the shaft pin of the brake friction block 28. When the maintenance device moves to the working position, the reduction motor 18 stops rotating and activates the self-locking function to lock the drive wheel 22. At the same time, the hydraulic control station 24 is activated to extend the second hydraulic telescopic rod 26, so that the brake friction block 28 rotates around the shaft pin and completely abuts against the arch rib, achieving the braking effect.

[0042] The device is manually installed on the arch rib at the arch foot position. A safety rope is used to securely connect the device to the arch rib 1. Power is connected, and the operator stands on the working platform 5 of the device with tools. The reduction motor 18 is started, and the hydraulic control station 24 is activated to adjust the length of the first hydraulic telescopic rod 25 and the second hydraulic telescopic rod 27. The working platform 5 is slowly raised while maintaining balance. When the maintenance device is raised to the anchor head 3 position, the reduction motor 18 is stopped and the self-locking function is activated to lock the drive wheel 22. At the same time, the braking device is activated, and the second hydraulic telescopic rod 26 is extended so that the brake friction block 28 is pressed against the upper surface of the arch rib 1. The operator opens the movable grid plate 12 on the working platform 5, stands on the arch rib 1, opens the anchor head cover plate 4, and enters the upper anchor hole to carry out the maintenance work on the upper anchor head 3.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A self-propelled maintenance device suitable for dumbbell-shaped arch ribs, characterized in that, Includes a work platform (5), a limit system, and a walking system; The work platform (5) is used by workers to perform maintenance work; the work platform (5) includes: a base and a first upper crossbeam (9) connected to the bottom of the rear end of the base; The walking system is set at the bottom of the work platform (5) and is used to drive the work platform (5) to walk along the arch rib. It includes: a reduction motor (18), a drive wheel (22) and a driven wheel (23); the top of the drive wheel (22) is fixedly connected to the bottom of the base, and the bottom of the drive wheel (22) is in contact with the arch rib; the drive wheel (22) is connected to the reduction motor (18) in a transmission, the top of the driven wheel (23) is connected to the bottom of the base, and the bottom of the driven wheel (23) is in contact with the arch rib; The limiting system includes a first vertical rod (14), a second vertical rod (15), a connecting rod (16), and limiting wheels (17). The first vertical rod (14) is symmetrically arranged at both ends of the arch rib and vertically connected to the bottom rear end of the working platform (5). The second vertical rod (15) is symmetrically arranged at both ends of the arch rib and vertically connected to the bottom front end of the working platform (5). The connecting rod (16) is connected to the first vertical rod (14) and the second vertical rod (15) at both ends respectively. Two sets of limiting wheels (17) are provided on the inner side of the first vertical rod (14). A set of limiting wheels (17) located on the upper inner side of the first vertical rod (14) contacts the lower semicircular surface of the upper steel pipe of the arch rib. The set of limiting wheels (17) located on the lower inner side of the first vertical rod (14) contacts the upper semicircular surface of the lower steel pipe of the arch rib. Two sets of limiting wheels (17) are also provided on the inner side of the second vertical rod (15). The set of limiting wheels (17) located on the upper inner side of the second vertical rod (15) contacts the lower semicircular surface of the upper steel pipe of the arch rib. The set of limiting wheels (17) located on the lower inner side of the second vertical rod (15) contacts the upper semicircular surface of the lower steel pipe of the arch rib. The connecting rod (16) is also equipped with an automatic hydraulic telescopic rod (29); It also includes a balancing system, which includes: a hydraulic control station (24), a first hydraulic telescopic rod (25), a third hydraulic telescopic rod (27), and a lower crossbeam (13) connected to the top of the first vertical rod (14); the hydraulic control station (24) is fixed to the upper rear end of the base, and the hydraulic control station (24) is connected to the first hydraulic telescopic rod (25) and the third hydraulic telescopic rod (27) through hydraulic oil pipes; the upper part of the first hydraulic telescopic rod (25) is connected to the base, and the lower part is connected to the driven wheel (23) in the walking system; the upper part of the third hydraulic telescopic rod (27) is connected to the first upper crossbeam (9), and the lower part is connected to the lower crossbeam (13); The limiting wheel (17) is welded to the first vertical rod (14) and the second vertical rod (15) and rests at 45° against the upper and lower steel pipes of the arch rib. When the maintenance device moves, the lengths of the first hydraulic telescopic rod (25) and the third hydraulic telescopic rod (27) are adjusted in real time according to the curvature of the arch rib. The connecting rod (16) between the first vertical rod (14) and the second vertical rod (15) rotates and extends and retracts according to the curvature of the arch rib, so that the limiting system adapts to the curvature of the arch rib and maintains the horizontal state of the working platform.

2. The self-propelled maintenance device for dumbbell-shaped arch ribs according to claim 1, characterized in that, The work platform (5) also includes: railings (8), a second upper crossbeam (10), and a grating plate (11). The base includes: a platform crossbeam (6) and a platform longitudinal beam (7) fixedly connected to each other. The platform crossbeam (6) is distributed laterally along the base, and the platform longitudinal beam (7) is distributed longitudinally along the base. The base is also connected with a vertically arranged railing (8), and the grid plate (11) is arranged on the base. The second upper crossbeam (10) is connected to the bottom of the front end of the base.

3. The self-propelled maintenance device for dumbbell-shaped arch ribs according to claim 2, characterized in that, The work platform (5) also includes a movable grid plate (12), which is arranged in the middle of the base.

4. The self-propelled maintenance device for dumbbell-shaped arch ribs according to claim 1, characterized in that, The walking system also includes: a first transmission gear (19), a second transmission gear (20), and a transmission shaft (21); The geared motor (18) is fixed at the upper front end of the base. The output end of the geared motor (18) is connected to the first transmission gear (19). The second transmission gear (20) is fixedly connected to the transmission shaft (21) and the two ends of the transmission shaft (21) are respectively connected to the drive wheel (22). The first transmission gear (19) meshes with the second transmission gear (20).

5. The self-propelled maintenance device for dumbbell-shaped arch ribs according to claim 4, characterized in that, The geared motor (18) has a self-locking function.

6. The self-propelled maintenance device for dumbbell-shaped arch ribs according to claim 1, characterized in that, It also includes a braking system, which comprises a second hydraulic telescopic rod (26) and a brake friction block (28). The second hydraulic telescopic rod (26) is connected to the hydraulic control station (24) through a hydraulic oil pipe. The upper part of the second hydraulic telescopic rod (26) is connected to the bottom of the base, and the lower part of the second hydraulic telescopic rod (26) is hinged to the brake friction block (28).

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