Large-span tubular truss steel structure high-altitude temporary welding platform

Abstract

The utility model relates to a kind of high-altitude temporary welding platform of large-span pipe truss steel structure, including main support structure, suspension box body;Main support structure has a platform, and the platform both sides extend a suspension box body downwards;Platform includes several two first channel steels arranged in parallel along transverse direction, the second channel steel of multiple frames is arranged on the top of first channel steel along longitudinal direction, longitudinal support rod and first grid plate laid on the upper portion of multiple longitudinal support rods in transverse direction;Suspension box body is provided with the step that can be climbed to platform upwards;The transverse inner side of the top of suspension box body is immediately adjacent to the truss top chord pipe needing to be welded.This utility model utilizes the platform formed by the pair of top chord pipe of pipe truss steel structure, which is the same height or close to height, to provide reliable support for the platform of main support structure, so as to realize the walking function of personnel from the top of platform, and in the process of welding operation, it can be conveniently moved to the opposite side, thereby improving the efficiency of welding operation in the lengthening direction of top chord pipe.

Description

Technical Field

[0001] This utility model relates to a temporary high-altitude platform that facilitates welding operations; specifically, it is a temporary high-altitude welding platform for a large-span tubular truss steel structure. Background Technology

[0002] With the increasing demands for spatial design and functionality in modern large-scale public buildings (airports, high-speed rail hubs, convention centers, stadiums, etc.), the application of large-span tubular truss steel structures is becoming more widespread. These structures typically employ a construction mode of "ground-based segmented assembly + high-altitude butt welding": first, the tubular truss segments are assembled and the main welds are completed on the ground; then, large lifting equipment such as crawler cranes are used to position the entire truss on a jig; finally, the remaining members are butt-welded at a height of 30-60 meters. Due to the high altitude, narrow working area, and high wind speeds at the closure point, construction workers must utilize temporary facilities to perform welding, flaw detection, and touch-up painting processes.

[0003] The traditional approach is to erect full-span scaffolding with couplers or cantilevered steel pipe supports as welding platforms, but current technologies have also seen some targeted improvements, such as:

[0004] Publication date: October 10, 2023; Publication number: CN 219805569 U; A welding operation platform for installing arch rib segments of a steel structure arch bridge.

[0005] Publication date: April 12, 2024; Publication number: CN 220767739 U; A steel pipe arch rib suspension platform;

[0006] Publication date: June 10, 2025; Publication number: CN 222957784 U; A welding platform for high-altitude welding of steel pipe trusses.

[0007] Publication date: August 20, 2024; Publication number: CN 221567841 U; Modular mounting platform for high-altitude welding assembly of steel structures.

[0008] Publication date: February 3, 2023; Publication number: CN 218438155 U; A high-altitude welding platform for a large-span spatial steel structure truss.

[0009] Publication date: August 18, 2020; Publication number: CN 211277093 U; A saddle-shaped assembled high-altitude welding platform;

[0010] All of the above existing technologies have one problem: if applied to large-span tubular truss steel structures, personnel movement is time-consuming and inconvenient, affecting work efficiency. Summary of the Invention

[0011] The purpose of this invention is to provide a temporary high-altitude welding platform for large-span tubular truss steel structures. During high-altitude welding of the tubular truss, the platform is directly hoisted to the welding position using lifting lugs, ensuring quick and stable installation and easy disassembly. Personnel can move directly to the opposite welding position via the connecting walkway in the middle, significantly reducing personnel movement time and safety risks, and improving work efficiency.

[0012] The present invention adopts the following technical solution:

[0013] A temporary high-altitude welding platform for a large-span tubular truss steel structure includes a main support structure and a suspended box. The main support structure has a platform with a suspended box extending downwards on each side of the platform. The platform includes several first channel steels 7 arranged horizontally in parallel, several second channel steels 12 arranged longitudinally above the first channel steels 7, longitudinal support rods, and a first grating plate 6 laid horizontally on the upper part of the multiple longitudinal support rods. The suspended box is provided with steps that allow people to climb up to the platform. The inner side of the top of the suspended box is adjacent to the upper chord tube 9 of the truss to be welded.

[0014] This technical solution utilizes a platform formed by a pair of upper chord tubes 9 of a tubular truss steel structure, which has the same or similar height, to provide reliable support for the platform of the main support structure. This enables personnel to walk on the platform and move easily to the opposite side during welding operations, thereby improving the efficiency of welding operations in the extension direction of the upper chord tubes.

[0015] Preferably, the platform has a planar structure.

[0016] Preferably, a second grating plate 8 is laid on the inner bottom plate of the suspension box.

[0017] Preferably, the upper part of both ends of the first channel steel 7 is provided with lifting lugs 4, and there are a total of four lifting lugs 4 on the two first channel steels.

[0018] Furthermore, the lifting lug 4 avoids the second channel steel 12 and is not covered by the first grating plate 6.

[0019] Furthermore, the lifting lug 4 is located laterally outward adjacent to the upper chord tube 9 of the truss.

[0020] Preferably, the step is made of angle steel 1.

[0021] Preferably, the platform of the supporting structure is surrounded by an enclosure structure.

[0022] Furthermore, the enclosure structure includes multiple angle steel columns 2, and railings 5 ​​connected to the angle steel columns 2 in the transverse direction.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1) A platform with the same or similar height is formed by a pair of upper chord tubes of the tubular truss steel structure, which provides reliable support for the platform of the main support structure, thereby enabling personnel to walk on the platform. During the welding operation, they can easily move to the opposite side, thereby improving the efficiency of welding operations in the extension direction of the upper chord tube.

[0025] 2) The platform's structure is composed of the first channel steel, the second channel steel, and the first grid plate, making the structure safe and reliable;

[0026] 3) When welding the tubular truss at high altitude, the lifting lugs on this temporary platform can be used to directly lift the platform to the welding position, making the installation quick and stable, and the disassembly convenient.

[0027] 4) It is more suitable for high-altitude welding of tubular truss structures, and is easy to install and disassemble, which can greatly reduce the time spent on personnel movement and safety risks, and improve work efficiency. Attached Figure Description

[0028] Figure 1 This is the front view of the large-span tubular truss steel structure high-altitude temporary welding platform of this utility model.

[0029] Figure 2 This is a top view of the temporary high-altitude welding platform for a large-span tubular truss steel structure according to this utility model.

[0030] Figure 3 yes Figure 2 A magnified view of the left side.

[0031] Figure 4 This is a left view of the temporary high-altitude welding platform for a large-span tubular truss steel structure according to this utility model.

[0032] Figure 5 yes Figure 4 A magnified view of a portion of the image.

[0033] In the diagram, 1. Angle steel, 2. Angle steel column, 3. Butt weld plate, 4. Lifting lugs (four in total), 5. Railing, 6. First grid plate, 7. First channel steel, 8. Second grid plate, 9. Truss upper chord, 10. Truss lower chord, 11. Butt weld, 12. Second channel steel, 13. Third channel steel. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] See Figure 1 , 24. For large-span tubular truss steel structures, there are two parallel and nearly at the same height main truss upper chord tubes 9. This utility model mainly uses the supporting plane provided by the two main truss upper chord tubes 9 to support the high-altitude temporary welding platform, thereby forming a platform on the upper part that can be walked on by the welding operator, so as to improve welding efficiency.

[0036] This utility model provides a saddle-shaped assembled high-altitude welding platform; see details below. Figure 1 , 2 4. A temporary high-altitude welding platform for a large-span tubular truss steel structure, comprising a main support structure and a suspended box; the main support structure has a platform, with a suspended box extending downwards on each side of the platform; the platform includes several first channel steels 7 arranged horizontally in parallel, several second channel steels 12 arranged longitudinally above the first channel steels 7, longitudinal support rods, and a first grating plate 6 laid horizontally on the upper part of the several longitudinal support rods; the suspended box is provided with steps that allow climbing to the platform; the inner side of the top of the suspended box is adjacent to the upper chord tube 9 of the truss to be welded.

[0037] This technical solution utilizes a platform formed by a pair of upper chord tubes 9 of a tubular truss steel structure, which has the same or similar height, to provide reliable support for the platform of the main support structure. This enables personnel to walk on the platform and move easily to the opposite side during welding operations, thereby improving the efficiency of welding operations in the extension direction of the upper chord tubes.

[0038] In this embodiment, see Figure 1 The platform is a planar structure.

[0039] In this embodiment, see Figure 1 , 4 A second grating plate 8 is laid on the inner bottom plate of the suspension box.

[0040] In this embodiment, see Figure 1 The upper part of both ends of the first channel steel 7 is provided with lifting lugs 4, and there are a total of four lifting lugs 4 on the two first channel steels. This is so that the crane can lift the entire large-span tubular truss steel structure onto the corresponding pair of main truss upper chord tubes.

[0041] In this embodiment, see Figure 1 and Figure 2 The lifting lug 4 is positioned away from the second channel steel 12 and the first grating plate 6 is not laid on it to facilitate welding operations.

[0042] In this embodiment, see Figure 1 and Figure 2 The lifting lug 4 extends laterally outward to be close to the upper chord tube 9 of the truss, so as to facilitate welding operations.

[0043] In this embodiment, see Figure 1 The steps are made of angle steel 1.

[0044] In this embodiment, see Figure 1 The platform of the supporting structure is surrounded by an enclosure structure. Specifically, the enclosure structure includes multiple angle steel columns 2 and railings 5 ​​connected to the angle steel columns 2 in the transverse direction.

[0045] This invention utilizes a platform formed by a pair of upper chord tubes of a tubular truss steel structure, with the same or similar height, to provide reliable support for the main support structure. This allows personnel to walk on the platform, facilitating easy movement to the opposite side during welding operations, thus improving the efficiency of welding operations along the extension direction of the upper chord tubes. When welding the tubular truss at height, the platform can be directly hoisted to the welding position using lifting lugs installed on this temporary platform, ensuring quick and stable installation and easy disassembly. It is particularly suitable for high-altitude welding of tubular truss structures, offering convenient installation and disassembly, significantly reducing personnel movement time and safety risks, and improving work efficiency.

[0046] The above are preferred embodiments of the present utility model. Those skilled in the art can make various changes or improvements based on this. Without departing from the overall concept of the present utility model, these changes or improvements should all fall within the scope of protection claimed by the present utility model.

Claims

1. A temporary high-altitude welding platform for a large-span tubular truss steel structure, characterized in that: Including the main support structure and the suspension box; The main support structure has a platform, and a suspended box extends downward from each side of the platform. The platform includes several first channel steels (7) arranged in parallel along the transverse direction, several second channel steels (12) arranged longitudinally above the first channel steels (7), longitudinal support rods, and a first grid plate (6) laid transversely on the upper part of the several longitudinal support rods. The suspended box is equipped with steps that allow one to climb up to the platform; The upper lateral inner side of the top of the suspension box is adjacent to the upper chord tube (9) of the truss that needs to be welded.

2. The high-altitude temporary welding platform for a large-span tubular truss steel structure as described in claim 1, characterized in that: The platform has a planar structure.

3. The high-altitude temporary welding platform for a large-span tubular truss steel structure as described in claim 1, characterized in that: A second grating plate (8) is laid on the inner bottom plate of the suspension box.

4. The high-altitude temporary welding platform for a large-span tubular truss steel structure as described in claim 1, characterized in that: The upper part of both ends of the first channel steel (7) is provided with lifting lugs (4), and there are a total of four lifting lugs (4) on the two first channel steels.

5. The high-altitude temporary welding platform for a large-span tubular truss steel structure as described in claim 4, characterized in that: The lifting lug (4) is positioned away from the second channel steel (12) and the first grating plate (6) is not laid on it.

6. The high-altitude temporary welding platform for a large-span tubular truss steel structure as described in claim 4, characterized in that: The lug (4) is located laterally outward adjacent to the upper chord tube (9) of the truss.

7. The high-altitude temporary welding platform for a large-span tubular truss steel structure as described in claim 1, characterized in that: The steps are made of angle steel (1).

8. The high-altitude temporary welding platform for a large-span tubular truss steel structure as described in claim 1, characterized in that: The platform of the supporting structure is surrounded by an enclosure structure.

9. The high-altitude temporary welding platform for a large-span tubular truss steel structure as described in claim 8, characterized in that: The enclosure structure includes multiple angle steel columns (2) and railings (5) connected to the angle steel columns (2) in the transverse direction.

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