Construction method for chamfering of hollow ball support joint of super-long-span pipe truss canopy structure

Abstract

A method for beveling hollow sphere support nodes in a super-large span tubular truss canopy structure, belonging to the field of building construction technology. The steps include: placing the hollow sphere node component in the circular hole of a working platform, with the hollow sphere opening 80mm-120mm higher than the working platform plate; the working platform is composed of a steel pipe 1 and a steel plate with a central circular hole welded together; installing a movable constraint frame on a semi-automatic linear cutting machine, tightening the clamping screws to secure the movable constraint frame; placing the movable constraint frame 4 on the upper side of the hemispherical opening, aligning the two constraint wheels with the inner and outer walls of the hollow sphere opening, and tightening the locking screws; adjusting the nozzle of the semi-automatic linear cutting machine, setting the required beveling angle according to the construction drawings, igniting, and turning on the power switch; the semi-automatic linear cutting machine, constrained by the movable constraint frame, moves circumferentially along the hollow sphere on the working platform plate to bevele the hollow sphere. The advantages are that it significantly reduces the labor intensity of on-site workers and improves the convenience and efficiency of construction operations.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and in particular provides a method for beveling the hollow sphere support node of an ultra-large span tubular truss canopy structure. It is applicable to the construction of hollow sphere beveling in the steel structure tubular truss system of ultra-large environmental protection enclosed canopy for coal powder materials. Background Technology

[0002] Open-air coal yards in thermal power plants, ports, mines, metallurgical plants, and coking plants generate dust during operations and storage in windy weather, causing material losses and polluting the surrounding environment. Currently, many regions in China have issued relevant documents requiring coal yards to implement fully enclosed measures. Promoting green production and protecting the ecological environment is crucial for sustainable development. In line with the trend of the times, coal yards have implemented green transformations, carrying out pollution-free rectification of coal production and storage. Among these, the transformation of coal storage into enclosed tubular truss canopy coal yards has achieved a model that prevents coal dust from escaping and maximizes resource utilization. Large-span steel structure tubular truss canopies mostly use hollow sphere nodes. Currently, the beveling process for hollow sphere support nodes in large-span tubular truss canopy structures uses the traditional manual hand-held gas cutting method. Due to differences in operator skill, this method easily leads to wind groove defects on the bevel surface, adversely affecting the appearance quality of the components and the subsequent welding quality; in addition, operators need to maintain a stable cutting torch for extended periods, resulting in high labor intensity. Summary of the Invention

[0003] The purpose of this invention is to provide a method for beveling hollow sphere support nodes in ultra-large span tubular truss canopy structures, applicable to the construction of beveling hollow spheres in steel tubular truss systems. This method effectively solves the common quality problem of wind channels appearing on beveling due to insufficient operational stability during manual hand-held gas cutting. By using a semi-automatic linear cutting machine with an external attachment, the beveling operation achieves uniform and controllable cutting speed, completely eliminating wind channel defects, significantly improving the appearance quality of the beveling, and significantly reducing the labor intensity of on-site workers, thus improving the convenience and efficiency of construction operations.

[0004] The main components used in the construction of this invention include a movable constraint frame, a work platform, and a semi-automatic linear cutting machine; the construction steps are as follows: 1. Place the hollow ball node component in the round hole of the working platform. The hollow ball opening is 80mm-120mm higher than the working platform plate. The working platform is composed of 4 steel pipes 1 and a steel plate 2 with a round hole in the center, welded together.

[0005] 2. Install the movable constraint frame 4 on the semi-automatic linear cutting machine 3, and tighten the clamping screws 5 to secure the movable constraint frame 4 firmly.

[0006] 3. Place the movable constraint frame 4 on the upper side of the hemispherical opening, fit the two constraint wheels 6 against the inner and outer walls of the hollow spherical opening, and tighten the locking screws 7.

[0007] 4. Adjust the nozzle of the semi-automatic linear cutting machine 3, set the required bevel angle according to the construction drawing, and ignite and turn on the power switch.

[0008] 5. Under the constraint of the moving constraint frame 4, the semi-automatic linear cutting machine 3 moves circumferentially along the hollow ball on the working platform plate 3, which can bevel the hollow ball.

[0009] The advantages of this invention are its simplicity in manufacturing, high efficiency in beveling hollow sphere joints, and improved surface quality, thereby meeting the requirements for rapid and safe construction of hollow sphere joints. It significantly reduces the labor intensity of on-site workers and enhances the convenience and efficiency of construction operations. Attached Figure Description

[0010] Figure 1 This is a schematic diagram illustrating the usage principle of the present invention.

[0011] Figure 2 Elevation view of equipment placement.

[0012] Figure 3 This is an assembly diagram of a movable constraint frame and a semi-automatic linear cutting machine.

[0013] Figure 4 This is an isometric view of the moving constraint frame.

[0014] In the diagram, 1 is a steel pipe, 2 is a steel plate, 3 is a semi-automatic linear cutting machine, 4 is a movable constraint frame, 5 is a clamping screw, 6 is a constraint wheel, and 7 is a locking screw. Detailed Implementation

[0015] The implementation steps of this invention are as follows: 1. Place the hollow ball node component in the round hole of the working platform. The hollow ball opening is 80mm-120mm higher than the working platform plate. The working platform is composed of 4 steel pipes 1 and a steel plate 2 with a round hole in the center welded together.

[0016] 2. Install the movable constraint frame 4 on the semi-automatic linear cutting machine 3, and tighten the clamping screws 5 to secure the movable constraint frame 4 firmly.

[0017] 3. Place the movable constraint frame 4 on the upper side of the hemispherical opening, fit the two constraint wheels 6 against the inner and outer walls of the hollow spherical opening, and tighten the locking screws 7.

[0018] 4. Adjust the nozzle of the semi-automatic linear cutting machine 3, set the required bevel angle according to the construction drawing, and ignite and turn on the power switch.

[0019] 5. Under the constraint of the moving constraint frame 4, the semi-automatic linear cutting machine 3 moves circumferentially along the hollow sphere on the work platform plate 3, which can bevel the hollow sphere.

Claims

1. A method for beveling the hollow sphere support node of an ultra-large span tubular truss canopy structure, characterized in that... The construction steps are as follows: (1) Place the hollow ball node component in the round hole of the working platform. The hollow ball opening is 80mm-120mm higher than the working platform plate. The working platform is composed of 4 steel pipes (1) and a steel plate (2) with a round hole in the center. (2) Install the movable constraint frame (4) on the semi-automatic linear cutting machine (3) and tighten the clamping screws (5) to fix the movable constraint frame (4) firmly; (3) Place the movable constraint frame (4) on the upper side of the hemispherical opening, fit the two constraint wheels 6 against the inner and outer walls of the hollow spherical opening, and tighten the locking screws (7). (4) Adjust the gun head of the semi-automatic linear cutting machine (3), set the required bevel angle according to the construction drawing, and ignite and turn on the power switch; (5) The semi-automatic linear cutting machine (3) moves circumferentially along the hollow ball on the steel plate (2) of the working platform under the constraint of the moving constraint frame (4), and can bevel the hollow ball.

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