Auxiliary operation platform for steel tower

Abstract

The invention discloses a steel tower auxiliary operation platform which comprises a platform frame erected on the top of a steel tower section and a bottom plate laid on the platform frame, and a supporting and fixing assembly at the bottom of the platform frame is fixedly connected with a steel tower wall plate. The platform frame is provided with a hoisting component used for integrally hoisting the operation platform, and the bottom plate is provided with a limiting assembly used for fixing machining equipment. The auxiliary operation platform is arranged on the steel tower, and the supporting and fixing assembly and the hoisting component are arranged on the auxiliary operation platform, so that the stacking and partial construction task requirements of a fixed annular platform or a movable construction device are shared, the welding construction efficiency of the steel tower is remarkably improved, and the equipment installation time is shortened; and meanwhile, the construction cost is effectively reduced by reducing the hoisting frequency and the characteristic of repeated disassembly and assembly, and the characteristics of convenience in operation, high universality and high bearing capacity are achieved.

Description

Technical Field

[0001] The invention relates to an aerial work platform, in particular to a steel tower auxiliary work platform. Background Art

[0002] In modern bridge engineering, the main beam steel tower is the core bearing structure, and its construction quality directly determines the overall safety performance and service life of the bridge. In view of the complex working conditions of the main tower high-altitude operation, fixed ring platforms or mobile construction devices are currently widely used. Such platforms provide construction personnel with a continuous working surface by surrounding the tower body or climbing along the tower body. However, the existing technology has significant limitations: since the platform is attached to the surrounding arrangement of the tower body, its structural design is constrained by space, resulting in insufficient bearing capacity, and it is difficult to meet the centralized stacking needs of bulk materials such as steel bars and formwork; at the same time, the narrow working area lacks operating space for on-site processing such as cutting and welding, and the construction process needs to frequently rely on secondary ground transportation. The above problems not only reduce construction efficiency, but also extend the construction period due to poor process connection, and even cause the risk of falling or overturning due to the irregular temporary stacking of high-altitude materials, thereby affecting the accuracy of concrete pouring and the quality of steel structure welding. Summary of the invention

[0003] Purpose of the invention: The purpose of the invention is to provide a steel tower auxiliary work platform which is easy to operate, has strong versatility and strong bearing capacity.

[0004] Technical solution: The steel tower auxiliary work platform described in the present invention includes a platform frame erected on the top of the steel tower segment and a base plate laid on the platform frame, and the supporting and fixing components at the bottom of the platform frame are fixedly connected to the steel tower wall panel; and the platform frame is provided with a hoisting component for hoisting the work platform as a whole, and the base plate is provided with a limiting component for fixing the processing equipment; a group of platform frames is equipped with two or more supporting and fixing components for maintaining the overall stability of the work platform; the work platform as a whole together with cutting, welding and other equipment is hoisted and erected as a whole on the top of the steel tower segment to share the stacking of fixed annular platforms or mobile construction devices and part of the construction task requirements.

[0005] Preferably, the supporting and fixing assembly includes a supporting member and a connecting member, and the connecting member has a welding end surface adapted to the curved surface of the steel tower wall panel to increase the load-bearing capacity.

[0006] Preferably, the limiting assembly includes fixed enclosures and removable enclosures arranged along the longitudinal direction of the base plate, and the fixed enclosures and removable enclosures are connected to the base plate to form an equipment limiting space, which is used to fix cutting, welding and other equipment on the base plate for overall lifting without the need to lift the work platform and related work equipment in sequence.

[0007] Preferably, the platform frame also includes a guardrail assembly and a skirting board arranged along the periphery of the bottom plate to protect the safety of workers.

[0008] Preferably, the guardrail assembly comprises vertical poles and transverse connecting rods with a height of 1.2m-1.5m, and a skirting board height of 100mm-150mm.

[0009] Preferably, the platform frame is composed of load-bearing beams welded to each other, including two or more main beams arranged parallel to each other, two or more cross beams vertically connected between the main beams, and reinforced distribution beams arranged at the intersection of the main beams and the cross beams; through the overall design of the beam structure, the design is simple and the dead weight is reduced while ensuring that the load-bearing capacity is not affected.

[0010] Preferably, the main beam, cross beam and distribution beam are H-shaped steel members with a flange width of 200mm-300mm.

[0011] Preferably, the lifting component includes two or more lifting ears symmetrically arranged on the top surface of the main beam, and the installation position of the lifting ears is located between the 1 / 4 span point and the 1 / 3 span point on the top surface of the main beam to ensure the lifting stability.

[0012] Preferably, the platform frame further comprises a detachable ladder assembly arranged on both sides of the platform; the ladder assembly is fixed to the platform frame via a plug-in connector.

[0013] Preferably, the bottom plate is made of an anti-slip steel plate, and reinforcement ribs distributed along the equipment arrangement area are arranged on the surface of the bottom plate.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: by arranging an auxiliary working platform on the steel tower, and arranging supporting and fixing components and hoisting components on the auxiliary working platform, the stacking and part of the construction task requirements of the fixed annular platform or the mobile construction device are shared, the welding construction efficiency of the steel tower is significantly improved, and the equipment installation time is shortened. At the same time, by reducing the number of hoisting times and the repeatable disassembly and assembly characteristics, the construction cost is effectively reduced. It has the characteristics of convenient operation, strong versatility and strong bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the steel tower auxiliary working platform of the present invention.

[0016] Figure 2 It is a schematic diagram of the construction of the steel tower auxiliary work platform of the present invention.

[0017] Figure 3 It is a schematic diagram of the local structure of the steel tower auxiliary operation of the present invention.

[0018] Figure 4 It is a schematic diagram of the local structure of the steel tower auxiliary operation of the present invention.

[0019] Figure 5It is a schematic diagram of the local structure of the steel tower auxiliary operation of the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of the supporting and fixing assembly in the present invention.

[0021] Figure 7 It is a schematic diagram of the fixed enclosure structure of the limiting assembly in the present invention.

[0022] Figure 8 It is a schematic diagram of the detachable enclosure structure of the limiting assembly in the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0024] like Figure 1-8 As shown, a steel tower auxiliary work platform in this embodiment includes a platform frame 1 composed of mutually welded load-bearing beams, a support and fixing assembly 2 welded to the lower surface of the platform frame 1, and a bottom plate 3 laid and fixed on the upper surface of the platform frame 1. The support and fixing assembly 2 includes a support member 6 and a connector 7. The connector 7 has a welding end face adapted to the curved surface of the steel tower wall plate, and the position between the connector 7 and the support member 6 can be adjusted according to the size of the steel tower. At the same time, the setting of the support member 6 can ensure that the space between the platform frame 1 and the top of the steel tower segment can be normally passed and constructed without affecting the overall construction. The platform frame 1 is welded and fixed to the support member 6, and the connector 7 is welded to the steel tower wall plate to achieve a stable connection between the platform frame 1 and the steel tower, that is, the platform frame 1 is fixed to the top of the steel tower segment through the support and fixing assembly 2. Compared with a fixed annular platform or a mobile construction device, its structural stability is higher and the working space is larger, which can supplement the stacking of existing devices and some construction task requirements. At the same time, a hoisting component 4 is provided on the platform frame 1 for cooperating with the crane to hoist the working platform as a whole, and a limiting component 5 is provided on the bottom plate 3. The corresponding equipment required for the construction is hoisted together with the working platform as a whole, which reduces the number of hoisting times and effectively reduces the construction cost.

[0025] The platform frame 1 is composed of two main beams arranged in parallel, a crossbeam vertically connected between the main beams, and a reinforced distribution beam welded at the intersection of the main beam and the crossbeam. Both the main beam and the crossbeam are made of HN600×200 H-shaped steel with a flange width of 200mm to provide excellent bearing capacity. The bottom plate 3 is made of 6mm thick patterned steel plate to ensure the firmness of the surface layer and provide a certain anti-slip performance; the surface is welded with I-10 steel reinforcement ribs to ensure the support performance of the surface layer and equipment. The bottom plate 3 is provided with a limit assembly 5 consisting of a fixed enclosure and a detachable enclosure. The fixed enclosure is welded and fixed with channel steel, and the detachable enclosure is connected to the bottom plate 3 by M16 bolts, forming a limit space that can accommodate at least four gas cylinders, two welding machines and an air compressor. The hoisting components 4 include four lifting lugs 4 symmetrically arranged on the top surface of the main beam, located at 1 / 4 of the span of the main beam, avoiding the maximum bending moment area of ​​the main beam, reducing the risk of hoisting deformation, and reducing the platform inclination deviation through the four-point hoisting mode to enhance its stability. A guardrail assembly 8 with a height of 1.2m and three transverse connecting rods and a skirting board 9 with a height of 120mm are set around the platform. Removable ladder assemblies 10 are installed on both sides and fixed to the platform frame 1 through a pin-type connector to facilitate personnel to go up and down and ensure construction safety.

[0026] The present invention realizes rapid deployment by hoisting the equipment onto the tower as a whole. The equipment is pre-installed on the base plate 3 in advance, which significantly reduces the installation time of the welding equipment and improves the construction efficiency. Under the premise of placing 4 gas cylinders, 2 welding machines, 2 welding cabinets, and 1 air compressor, if a normal arrangement is adopted on an ordinary platform, 9 hooks are required for crane hoisting, and the average hoisting time per hook is about 15 minutes, and the total time spent is about 2 hours. The present invention can hoist the equipment onto the tower once, which only takes 15 minutes, significantly reducing the equipment installation time. At the same time, the present invention also provides a fixed equipment installation position and sets fixing measures to reduce the risk of equipment movement during the construction process. The guardrail assembly 8 and the detachable ladder assembly 10 are designed to ensure the safe passage of personnel. The uniform arrangement of welding equipment is taken into consideration to ensure the convenience of welding operation and improve the quality and speed of welding work. It is suitable for the construction environment of steel towers with complex structures and provides a flexible construction plan.

[0027] Before construction, the welding machine, gas cylinders and other equipment are pre-fixed in the limit assembly 5 of the base plate 3. The fixed enclosure is welded to the surface of the base plate 3 with channel steel to form the equipment foundation positioning area; the removable enclosure is bolted to the base plate 3 by bolts to achieve rapid clamping of the equipment. The fixed enclosure and the removable enclosure are combined to form a modular limit space to ensure that the spacing between gas cylinders, welding machines and other equipment meets the safety operation specifications. Then, the four lifting ears on the top of the main beam are connected by a crane to hoist the entire platform to the top of the steel tower segment. After the platform is in place, adjust the contact surface between the connector 7 of the support and fixing assembly 2 and the steel tower wall panel to ensure that the arc surface of the connector 7 is completely in contact with the tower wall, and then weld it to the steel tower wall panel. Subsequently, the removable ladder assembly 10 is installed on both sides of the platform to solve the height difference between the top of the steel tower segment and the platform caused by the support 6, and fast fixation is achieved through the pin-type connector. The guardrail assembly 8 and the skirting board 9 are activated simultaneously.

Claims

1. A steel tower auxiliary work platform, characterized in that: The invention comprises a platform frame (1) erected on the top of a steel tower segment and a base plate (3) laid on the platform frame (1); a supporting fixing component (2) at the bottom of the platform frame (1) is fixedly connected to a steel tower wall plate; and a hoisting member (4) for hoisting the working platform as a whole is provided on the platform frame (1); and a limiting component (5) for fixing processing equipment is provided on the base plate (3).

2. The working platform according to claim 1, characterized in that: The support and fixing assembly (2) comprises a support member (6) and a connecting member (7), wherein the connecting member (7) has a welding end surface adapted to the curved surface of a steel tower wall panel.

3. The working platform according to claim 1, characterized in that: The limiting assembly (5) comprises a fixed enclosure and a detachable enclosure arranged longitudinally along the bottom plate (3); the fixed enclosure and the detachable enclosure are connected to the bottom plate (3) to form a device limiting space.

4. The working platform according to claim 1, characterized in that: The platform frame (1) further comprises a guardrail assembly (8) and a skirting board (9) arranged along the periphery of the base plate (3).

5. The working platform according to claim 4, characterized in that: The guardrail assembly (8) comprises a vertical pole and a transverse connecting pole with a height of 1.2m-1.5m, and a skirting board (9) with a height of 100mm-150mm.

6. The working platform according to claim 1, characterized in that: The platform frame (1) is composed of mutually welded load-bearing beams, including two or more main beams arranged in parallel with each other, two or more cross beams vertically connected between the main beams, and reinforced distribution beams arranged at the intersection of the main beams and the cross beams.

7. The working platform according to claim 6, characterized in that: The main beam, cross beam and distribution beam are made of H-shaped steel components, and the flange width is 200mm-300mm.

8. The working platform according to claim 6, characterized in that: The lifting component (4) comprises two or more lifting ears symmetrically arranged on the top surface of the main beam.

9. The working platform according to claim 1, characterized in that: The platform frame (1) further comprises detachable ladder assemblies (10) arranged on both sides of the platform; the ladder assemblies (10) are fixed to the platform frame (1) via plug-in connectors.

10. The working platform according to claim 1, characterized in that: The bottom plate (3) is made of an anti-slip steel plate, and its surface is provided with reinforcing ribs distributed along the equipment arrangement area.

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