Movable cantilever hanging basket operation device for steel box girder of cable-stayed bridge

Abstract

The invention discloses a movable cantilever hanging basket operation device for a cable-stayed bridge steel box girder, and belongs to the technical field of cable-stayed bridge operation. The device comprises a trolley base, an electric rotating base frame is arranged on the trolley base in a matched mode, a control rack is fixedly arranged on the electric rotating base frame, a cantilever beam is arranged in the control rack in a sliding fit mode, and a first hydraulic telescopic device used for pushing the cantilever beam to move transversely is fixedly arranged on the control rack. An overhanging machine head is fixedly arranged at one end of the overhanging beam; a main longitudinal cantilever beam is arranged on the cantilever machine head in a sliding fit mode. During use, the storage baskets are mounted in the main longitudinal suspension beam, constructors can place materials in the storage baskets in batches according to requirements and then drive the storage baskets to ascend and descend along the main longitudinal suspension beam through the suspension mechanism, and the materials can be accurately conveyed into the main hanging basket. And a lifting rope does not need to be used for delivery, so that the material conveying efficiency is improved, a worker can continuously use the materials, and the construction convenience and continuity are improved.

Description

Technical Field

[0001] This invention relates to the field of cable-stayed bridge operations, and in particular to a movable cantilevered basket operation device for steel box girders of cable-stayed bridges. Background Technology

[0002] A cable-stayed bridge is a type of bridge where the bridge deck is anchored to towers by several inclined cables. The towers act like the pillars of a harp, and the cables like the strings, transferring the bridge deck load to the towers and then to the foundation. In the construction of cable-stayed bridges, movable cantilever scaffolding is an important auxiliary device. This device can be moved as construction progresses, providing a high-altitude work platform for tasks such as bridge deck paving and guardrail installation.

[0003] Mobile cantilever scaffolding systems are typically equipped with a power drive system, enabling the scaffolding to move smoothly along one side of the bridge. Workers inside the scaffolding can easily reach various parts of the bridge without frequently changing work points. This greatly facilitates tasks such as pipe laying, bridge painting, and routine maintenance, improving work efficiency and reducing the safety risks of working at height.

[0004] The shortcomings of the existing technical solutions are as follows: Materials and tools used by workers are typically suspended by ropes or initially placed directly in the suspended basket. Rope hoisting requires additional hoisting equipment, making the operation cumbersome. Placing materials in the suspended basket is problematic; for larger components or similar materials, the limited internal space restricts storage, necessitating frequent retrieval and impacting work efficiency. Furthermore, improper operation or material movement during hoisting and retrieval poses a safety threat to workers inside the basket, increasing construction risks. Summary of the Invention

[0005] This invention provides a movable cantilever scaffolding working device for steel box girders of cable-stayed bridges, which can solve the problem of inconvenience in transporting construction materials and tools during construction operations in the prior art.

[0006] A movable cantilever scaffolding working device for a cable-stayed bridge steel box girder includes a trolley base, an electrically rotating base frame mounted on the trolley base, a control frame fixedly mounted on the electrically rotating base frame, a cantilever beam slidably fitted inside the control frame, a first hydraulic telescopic device for pushing the cantilever beam laterally fixedly mounted on the control frame, a cantilever head fixedly mounted at one end of the cantilever beam, a main longitudinal suspension beam slidably fitted on the cantilever head, a main scaffolding fixedly mounted at the bottom of the main longitudinal suspension beam for carrying workers, a lifting mechanism for driving the main longitudinal suspension beam longitudinally on the control frame, a storage basket slidably fitted inside the main longitudinal suspension beam for transferring construction materials, and a suspension mechanism for driving the storage basket up and down along the main longitudinal suspension beam on the cantilever head.

[0007] As a further aspect of the present invention: the main longitudinal cantilever beam includes a cantilever frame that slides with the cantilever head, a ladder is fixedly distributed longitudinally on the cantilever frame, and a guide rod passes through the cantilever head and slides with the cantilever head, the guide rod being used to maintain the sliding engagement relationship between the cantilever frame and the cantilever head.

[0008] As a further embodiment of the present invention: the cantilever beam includes a rear cantilever beam that slides with the control frame, a front cantilever beam that is movably hinged to the front side of the rear cantilever beam, the cantilever head being fixedly connected to the front end of the front cantilever beam, a rear hydraulic seat being fixedly installed on the rear cantilever beam, a front hydraulic seat being fixedly installed on the front cantilever beam, a second hydraulic telescopic device being movably hinged to the rear hydraulic seat, the telescopic end of the second hydraulic telescopic device being movably hinged to the front hydraulic seat, and the second hydraulic telescopic device being able to drive the front cantilever beam to rotate upward by 90 degrees.

[0009] As a further embodiment of the present invention: “╚╝”-shaped assembly baskets are provided on both sides of the main suspended platform, and the assembly baskets are open on both the left and right sides. A side rail is detachably provided on the side of the assembly basket away from the main suspended platform to serve as a barrier. A bolt fixing plate is provided between the main suspended platform and the assembly basket.

[0010] As a further embodiment of the present invention: the lifting mechanism includes a winding device fixedly mounted on the control frame, a motion cable is wound on the winding device, a reversing wheel that cooperates with the motion cable is provided inside the cantilever head, and the free end of the motion cable is fixedly connected to the lower end of the main longitudinal beam.

[0011] As a further aspect of the present invention, the storage basket is slidably engaged with the guide rod.

[0012] As a further aspect of the present invention: the suspension mechanism includes an automatic cable reel fixedly mounted on the cantilever head, the output end of the automatic cable reel is provided with a thin-diameter cable, the free end of the thin-diameter cable is fixedly connected to the storage basket, and the automatic cable reel drives the storage basket to move up and down through the thin-diameter cable.

[0013] As a further aspect of the present invention: a counterweight basket is provided on the rear side of the electric rotating base frame, and a counterweight is placed on the counterweight basket.

[0014] As a further aspect of the present invention: the ballast basket is movably hinged to the electric rotating base frame, and the ballast basket can be flipped over and placed on the rear side of the electric rotating base frame.

[0015] As a further aspect of the present invention: a cavity is provided at the bottom front side of the control frame, and the winding device includes a motor disposed inside the cavity and a winding reel coaxially cooperating with the output end of the motor.

[0016] The beneficial effects of this invention are: 1. In this invention, the storage basket is installed inside the main longitudinal suspension beam. Construction workers can place materials in batches as needed, and then the basket is lifted and lowered along the main longitudinal suspension beam by the suspension mechanism, accurately transporting the materials into the main basket. This eliminates the need for hoisting ropes, improving material transport efficiency and allowing workers to use materials continuously, thus enhancing the convenience and continuity of construction.

[0017] 2. In this invention, the counterweight basket is hinged to the electrically rotating base frame. During construction, a counterweight is placed on it; during transport, it is flipped and placed upright behind the electrically rotating base frame for storage. The rear cantilever beam and the front cantilever beam are hinged together. The rear cantilever beam retracts via a second hydraulic telescopic device, causing the front cantilever beam to rotate upwards by 90 degrees, changing the main longitudinal cantilever beam from vertical to horizontal. Simultaneously, the electrically locking device inside the cantilever head activates, fixing the guide rod and preventing the main longitudinal cantilever beam from swaying. These synergistic operations reduce the overall height and volume of the device, improving transportation convenience.

[0018] 3. In this invention, when the working area needs to be expanded, construction workers first disassemble the side railings on both sides of the main suspended platform, then install the assembly basket, and use bolts to fix the plate, securing the assembly basket to the main suspended platform firmly through its clamps and bolts, thus achieving modular assembly. Finally, a side railing is installed on the side of the assembly basket away from the main suspended platform to prevent personnel or materials from falling. This assembly method allows for flexible adjustment of the personnel capacity according to different construction needs, expanding the working area and providing construction workers with a more spacious working space. Attached Figure Description

[0019] Figure 1 This invention provides a schematic diagram of the overall structure of a movable cantilever suspended platform operating device for a cable-stayed bridge steel box girder. Figure 2 This is a schematic diagram of the first embodiment of a movable cantilever suspended platform operating device for a cable-stayed bridge steel box girder provided by the present invention; Figure 3 This is a schematic diagram of the second embodiment of the movable cantilever scaffolding operation device for steel box girder of cable-stayed bridge provided by the present invention; Figure 4 This invention provides a schematic diagram of the assembly basket structure of a movable cantilever suspended basket operation device for a cable-stayed bridge steel box girder.

[0020] Explanation of reference numerals in the attached figures: 1. Trolley base; 2. Electric rotating base frame; 201. Counterweight basket; 202. Counterweight; 3. Control frame; 301. First hydraulic telescopic device; 4. Cantilever beam; 401. Cantilever head; 402. Rear cantilever beam; 403. Front cantilever beam; 404. Rear hydraulic seat; 405. Second hydraulic telescopic device; 406. Front hydraulic seat; 5. Main longitudinal cantilever beam; 501. Cantilever frame; 502. Ladder; 503. Guide rod; 6. Storage basket; 7. Main hanging basket; 701. Assembly basket; 702. Side rail; 703. Bolt fixing plate; 8. Suspension mechanism; 801. Automatic cable reel; 802. Fine diameter cable; 9. Lifting mechanism; 901. Motion cable; 902. Rewinding device. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] like Figures 1 to 4 As shown in the figure, an embodiment of the present invention provides a movable cantilever scaffolding device for a cable-stayed bridge steel box girder, comprising a trolley base 1. The trolley base 1 has the function of remotely driving the entire box girder mechanism to move laterally along the bridge edge. An electric rotating base frame 2 is mounted on the trolley base 1, and a motor fixedly connected to the trolley base 1 is mounted at the bottom of the electric rotating base frame 2. The motor can drive the electric rotating base frame 2 to rotate, and a control frame 3 is fixedly mounted on the electric rotating base frame 2. A cantilever beam 4 is installed inside the control frame 3 in a sliding fit, and a first hydraulic telescopic device 301 for pushing the cantilever beam 4 to move laterally is fixedly mounted on the control frame 3. A cantilever head 401 is fixedly mounted at one end of the cantilever beam 4. The first hydraulic telescopic device 301 can drive the cantilever head 401 to move back and forth, thereby adjusting the distance between the scaffolding and the bridge body.

[0023] A main longitudinal suspension beam 5 is slidably mounted on the cantilever head 401. A main suspended basket 7 is fixedly installed at the bottom of the main longitudinal suspension beam 5. The main function of the main suspended basket 7 is to support workers and facilitate construction operations. Simultaneously, a lifting mechanism 9 is installed on the control frame 3 to drive the main longitudinal suspension beam 5 longitudinally. A storage basket 6 is slidably mounted inside the main longitudinal suspension beam 5 for passing construction materials. A suspension mechanism 8 is installed on the cantilever head 401. The function of the suspension mechanism 8 is to move the storage basket 6 up and down along the main longitudinal suspension beam 5 to complete the purpose of passing construction materials.

[0024] In practical use, the trolley base 1 is first remotely controlled to move the main suspended platform 7 closer to the construction point. Next, the first hydraulic telescopic device 301 moves the cantilever beam 4, adjusting the distance between the main suspended platform 7 and the bridge structure. Then, the lifting mechanism 9 is used to place the main suspended platform 7 at the construction position on the side of the bridge structure. Afterwards, construction materials are placed in the storage basket 6 according to the construction needs, and the lifting mechanism 9 then transports the storage basket 6 to the main suspended platform 7 in batches. This allows workers to use the materials continuously without the need for hoisting ropes, making it both efficient and convenient.

[0025] The main longitudinal cantilever beam 5 includes a cantilever frame 501 that slides and engages with the cantilever head 401. A ladder 502 is longitudinally fixed on the cantilever frame 501, and a guide rod 503 passes through and slides and engages with the cantilever head 401. The main function of the guide rod 503 is to maintain the sliding engagement between the cantilever frame 501 and the cantilever head 401, ensuring the stability of their movement. Workers can exit the main suspended platform 7 via the ladder 502, facilitating work from different positions. The storage basket 6 slides and engages with the guide rod 503, preventing it from swaying due to external forces during transportation, thus reducing safety hazards and ensuring construction safety.

[0026] A cavity is provided at the bottom front side of the control frame 3. The lifting mechanism 9 includes a winding device 902 fixedly mounted on the control frame 3. The winding device 902 includes a motor located inside the cavity and a winding reel coaxially engaged with the motor output end. A motion cable 901 is wound on the winding reel. A deflector wheel cooperating with the motion cable 901 is provided inside the cantilever head 401. The free end of the motion cable 901 is fixedly connected to the lower end of the main longitudinal suspension beam 5 after passing through the deflector wheel. When the motor starts, it drives the winding reel to rotate, thereby winding the motion cable 901, causing the motion cable 901 to pull the main longitudinal suspension beam 5, which in turn drives the main suspended basket 7 to overcome gravity and complete the lifting operation, facilitating the placement of the main suspended basket 7 and workers on one side of the bridge for construction.

[0027] A counterweight basket 201 is provided on the rear side of the electric rotating base frame 2, such as Figure 1 As shown, the ballast basket 201 is connected to the electrically rotating base frame 2 by a hinged connection. During construction, a counterweight 202 is placed on the ballast basket 201 for weight distribution. During transportation, the ballast basket 201 can be flipped over and placed upright on the rear side of the electrically rotating base frame 2 for easy storage. Figure 3 As shown, this reduces the space occupied by the device during transportation and improves the convenience of transportation.

[0028] In the second specific embodiment, such as Figure 2As shown, side rails 702 are detachably mounted on both sides of the main suspended platform 7. When the side rails 702 are removed, assembly baskets 701 can be installed, thereby expanding the working area. Assembly baskets 701 are in a “╚╝” shape, with openings on both sides. Each set of assembly baskets 701 has a detachable side rail 702 on the side furthest from the main suspended platform 7, which acts as a barrier to prevent workers or materials from falling from the side. Bolt fixing plates 703 are installed between the main suspended platform 7 and the assembly baskets 701. Each bolt fixing plate 703 consists of two sets of clamps fixed to the assembly baskets 701 and the main suspended platform 7, and bolts for fixing the clamps. The bolt fixing plates 703 secure the assembly baskets 701 and the main suspended platform 7 together, achieving a modular assembly effect and allowing for flexible adjustment of the personnel capacity according to different construction needs.

[0029] In the second specific embodiment, to facilitate the storage of the main longitudinal cantilever beam 5 and the main suspended basket 7 and reduce the overall height of the device, the cantilever beam 4 includes a rear cantilever beam 402 that slides with the control frame 3, and a front cantilever beam 403 that is movably hinged to the front side of the rear cantilever beam 402, such as... Figure 3 As shown, the cantilever head 401 is fixedly connected to the front end of the front cantilever beam 403. A rear hydraulic seat 404 is fixedly installed on the rear cantilever beam 402, and a front hydraulic seat 406 is fixedly installed on the front cantilever beam 403. A second hydraulic telescopic device 405 is movably hinged to the rear hydraulic seat 404, and the telescopic end of the second hydraulic telescopic device 405 is movably hinged to the front hydraulic seat 406. During transportation, in order to facilitate the storage of the cantilever beam 4, the second hydraulic telescopic device 405 can be driven to retract. The second hydraulic telescopic device 405 drives the front cantilever beam 403 to rotate upward by 90 degrees, so that the main longitudinal cantilever beam 5 changes from a vertical state to a horizontal state, which greatly reduces the space occupied by the device. At the same time, an electric locking device is installed inside the cantilever head 401. The guide rod 503 is fixed by a clamp block driven by a motor, thereby preventing the main longitudinal cantilever beam 5 from shaking in the stored state and ensuring safety during transportation.

[0030] The suspension mechanism 8 includes an automatic cable reel 801 fixedly mounted on the cantilever head 401. A thin-diameter cable 802 is attached to the output end of the automatic cable reel 801, and the free end of the thin-diameter cable 802 is fixedly connected to the storage basket 6. The automatic cable reel 801 drives the storage basket 6 up and down via the thin-diameter cable 802, thus conveying the materials. During transport, the automatic cable reel 801 tightens the thin-diameter cable 802, causing the storage basket 6 to move close to the cantilever head 401, preventing the storage basket 6 from swaying during transport and ensuring transport safety.

[0031] Working principle: Construction personnel remotely operate the trolley base 1, causing it to move the entire working device laterally along the bridge edge, bringing the main suspended platform 7 approximately close to the construction point. After reaching the approximate position, the first hydraulic telescopic device 301 is activated. The first hydraulic telescopic device 301 pushes the cantilever beam 4 to move, which in turn drives the cantilever machine head 401 to move back and forth, precisely adjusting the distance between the main suspended platform 7 and the bridge body, so that the main suspended platform 7 is in a suitable construction position.

[0032] The reel in the lifting mechanism 9 rotates, winding the motion cable 901. After passing through the deflector inside the cantilever head 401, the free end of the motion cable 901 pulls the main longitudinal suspension beam 5, which in turn drives the main suspended basket 7 to move downward against gravity, and smoothly place the main suspended basket 7 at the construction position on the side of the bridge.

[0033] After the main suspended platform 7 is in place, construction workers place the construction materials into the storage basket 6 according to the construction requirements. After placement, the automatic cable reel 801 is activated. The automatic cable reel 801 drives the storage basket 6 along the main longitudinal suspension beam 5 towards the main suspended platform 7 via the thin-diameter cable 802. If there is a large amount of construction material, the material can be delivered multiple times at intervals as needed to ensure that there is enough construction material in the main suspended platform 7 to meet the needs of uninterrupted construction.

[0034] If it is necessary to expand the working area, the construction personnel can first remove the side rails 702 on both sides of the main suspended platform 7, then install the assembly basket 701, and fix the assembly basket 701 and the main suspended platform 7 together with the bolt fixing plate 703. Finally, install the side rail 702 on the side of the assembly basket 701 away from the main suspended platform 7 to prevent workers or materials from falling from the side.

[0035] After construction is completed, the work equipment needs to be stored for transportation. First, the lifting mechanism 9 is activated to raise the main suspended platform 7 to a suitable height. If the assembly basket 701 is used, the side rail 702 on the side of the assembly basket 701 away from the main suspended platform 7 must be removed first, and then the bolt fixing plate 703 between the assembly basket 701 and the main suspended platform 7 must be removed to take the assembly basket 701 off. Next, the second hydraulic telescopic device 405 is activated to retract it, causing the front cantilever beam 403 to rotate upwards by 90 degrees, so that the main longitudinal cantilever beam 5 changes from a vertical state to a horizontal state, reducing the overall height of the device. At the same time, the electric locking device inside the cantilever head 401 is activated, and the guide rod 503 is fixed by the clamp block driven by the motor to prevent the main longitudinal cantilever beam 5 from shaking in the stored state. Finally, the counterweight basket 201 on the rear side of the electric rotating base frame 2 is flipped and placed on the rear side of the electric rotating base frame 2 to complete the storage, reducing the space occupied by the device during transportation and improving the convenience of transportation.

[0036] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A movable cantilever scaffolding operating device for a steel box girder of a cable-stayed bridge, comprising a trolley base (1), characterized in that, An electric rotating base frame (2) is provided on the trolley base (1), a control frame (3) is fixedly provided on the electric rotating base frame (2), a cantilever beam (4) is slidably provided inside the control frame (3), a first hydraulic telescopic device (301) for pushing the cantilever beam (4) to move laterally is fixedly provided on the control frame (3), and a cantilever head (401) is fixedly provided at one end of the cantilever beam (4); The cantilever machine head (401) is slidably fitted with a main longitudinal suspension beam (5), and a main suspended basket (7) is fixedly installed at the bottom of the main longitudinal suspension beam (5) for carrying workers. The control frame (3) is equipped with a lifting mechanism (9) for driving the main longitudinal suspension beam (5) to move longitudinally. A storage basket (6) is slidably fitted inside the main longitudinal suspension beam (5) for passing construction materials. The cantilever machine head (401) is equipped with a suspension mechanism (8) for driving the storage basket (6) to rise and fall along the main longitudinal suspension beam (5).

2. The movable cantilever suspended platform working device for a cable-stayed bridge steel box girder as described in claim 1, characterized in that, The main longitudinal cantilever beam (5) includes a cantilever frame (501) that slides with the cantilever head (401). A ladder (502) is fixedly distributed longitudinally on the cantilever frame (501), and a guide rod (503) that passes through the cantilever head (401) and slides with the cantilever head (401). The guide rod (503) is used to maintain the sliding fit relationship between the cantilever frame (501) and the cantilever head (401).

3. The movable cantilever scaffolding working device for a cable-stayed bridge steel box girder as described in claim 2, characterized in that, The cantilever beam (4) includes a rear cantilever beam (402) that slides with the control frame (3), and a front cantilever beam (403) that is movably hinged to the front side of the rear cantilever beam (402). The cantilever head (401) is fixedly connected to the front end of the front cantilever beam (403). A rear hydraulic seat (404) is fixedly installed on the rear cantilever beam (402), and a front hydraulic seat (406) is fixedly installed on the front cantilever beam (403). A second hydraulic telescopic device (405) is movably hinged to the rear hydraulic seat (404). The telescopic end of the second hydraulic telescopic device (405) is movably hinged to the front hydraulic seat (406). The second hydraulic telescopic device (405) can drive the front cantilever beam (403) to rotate upward by 90 degrees.

4. A movable cantilever scaffolding working device for a cable-stayed bridge steel box girder as described in claim 2 or 3, characterized in that, The main suspended platform (7) is provided with "╚╝" shaped assembly baskets (701) on both sides. Both sides of the assembly basket (701) are open. The side of the assembly basket (701) away from the main suspended platform (7) is detachably provided with a side rail (702) to block the view. A bolt fixing plate (703) is provided between the main suspended platform (7) and the assembly basket (701).

5. A movable cantilever scaffolding working device for a cable-stayed bridge steel box girder as described in claim 2 or 3, characterized in that, The lifting mechanism (9) includes a winding device (902) fixedly mounted on the control frame (3), on which an action cable (901) is wound. The cantilever head (401) is provided with a reversing wheel that cooperates with the action cable (901). The free end of the action cable (901) is fixedly connected to the lower end of the main longitudinal beam (5).

6. The movable cantilever scaffolding working device for a cable-stayed bridge steel box girder as described in claim 5, characterized in that, The storage basket (6) is slidably engaged with the guide rod (503).

7. The movable cantilever suspended platform working device for a cable-stayed bridge steel box girder as described in claim 6, characterized in that, The suspension mechanism (8) includes an automatic cable reel (801) fixedly mounted on the cantilever head (401). The output end of the automatic cable reel (801) is provided with a thin-diameter cable (802). The free end of the thin-diameter cable (802) is fixedly connected to the storage basket (6). The automatic cable reel (801) drives the storage basket (6) to move up and down through the thin-diameter cable (802).

8. The movable cantilever suspended platform working device for a cable-stayed bridge steel box girder as described in claim 1, characterized in that, A counterweight basket (201) is provided on the rear side of the electric rotating base frame (2), and a counterweight (202) is placed on the counterweight basket (201).

9. The movable cantilever scaffolding working device for a cable-stayed bridge steel box girder as described in claim 8, characterized in that, The ballast basket (201) is hinged to the electric rotating base frame (2), and the ballast basket (201) can be flipped over and stand on the rear side of the electric rotating base frame (2).

10. The movable cantilever scaffolding operating device for a cable-stayed bridge steel box girder as described in claim 5, characterized in that, The control frame (3) has a cavity at the bottom front side, and the winding device (902) includes a motor installed inside the cavity and a winding reel coaxially with the output end of the motor.

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