Liftable large-diameter flue gas pipeline assembly welding auxiliary platform

Abstract

The utility model relates to a liftable large-diameter flue gas pipeline assembly welding auxiliary platform which comprises a liftable welding platform and an adjustable electric roller carrier, the adjustable electric roller carrier is used for supporting and rotating a to-be-welded pipeline, the liftable welding platform is arranged on the upper portion of the to-be-welded pipeline through platform supporting legs, and the adjustable electric roller carrier is used for supporting the to-be-welded pipeline. A lifting device is arranged in the center of the liftable welding platform, and the manned steel plate is lifted or descended to the position above the to-be-welded end of the to-be-welded pipeline through the lifting device. The device is convenient to install, maintain and operate, effectively solves the problems that a traditional large-diameter pipeline circumferential weld is large in welding difficulty, unsafe, large in labor intensity and large in accident potential, quality cannot be guaranteed, the purpose of safe and rapid welding is achieved, welding efficiency and safety are greatly improved, and the production cost is reduced. And a task can be completed more safely, reliably and quickly when a large-diameter pipeline is welded.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline welding equipment, in particular to a lifting and lowering large-diameter smoke pipeline assembly butt welding auxiliary platform. Background Art

[0002] During the installation and construction of industrial pipelines such as metallurgy, chemical industry or water conservancy projects, such as sintering projects, the production and installation volume of large-diameter flue gas pipelines is very large, the pipeline route is long, the number of pipeline interfaces is large, the welding volume is large, and the installation locations are all high-altitude operations, which have high safety hazards and great welding difficulty. In order to minimize high-altitude operations, the best way is to pair multiple pipe sections made of fixed-length manned steel plates to form an installation module (for example, in the new sintering project of Wuhan Iron and Steel, combined with the process layout, it was decided that the standard pipe section rolled on site was 2.1 meters wide, and four pipe sections were paired into an installation module, with a total length of 8.4 meters for the flue gas pipeline module).

[0003] However, the diameter of the flue gas duct section is large, exceeding the height of a human body, and cannot be welded on the ground. At the same time, it has a large dead weight and is difficult to rotate. Therefore, when performing modular ring weld welding on large-diameter pipe sections, the traditional construction process often requires multiple construction workers to set up corresponding welding platforms according to pipes of different diameters to work together, adjust the spacing, and correct the joints. The welders complete part of the welding on the temporary platform, and then use lifting equipment to rotate the pipe module to continue welding the remaining welds until the entire ring weld between the pipes is completed. This process is not only time-consuming and labor-intensive, with a long preparation time, but also inefficient and unsafe, with many hidden dangers. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a lifting large-diameter smoke pipe group welding auxiliary platform, the use range is not limited by the change of pipe diameter, and the welding efficiency and welding quality of large-diameter pipe section groups are improved.

[0005] The technical solution adopted by the utility model to solve its technical problems is: to provide a liftable large-diameter flue gas duct assembly welding auxiliary platform, including a liftable welding platform and an adjustable electric roller frame, the adjustable electric roller frame is used to support and rotate the pipe to be welded, the liftable welding platform is arranged on the upper part of the pipe to be welded through platform legs, and a lifting device is arranged at the center of the liftable welding platform, and the manned steel plate is raised or lowered to above the welding end of the pipe to be welded by the lifting device.

[0006] Preferably, the lifting device includes lifting rings arranged below both sides of the liftable welding platform, the lifting rings are connected to the manned steel plate through an electric hoist or a hand hoist, and lifting guide tubes are provided at the four corners of the manned steel plate.

[0007] Preferably, the adjustable electric roller frame comprises a base, two sides of the base are connected to the arc-shaped roller frame via a rotating shaft, and an electric roller is respectively provided at two ends of the roller frame.

[0008] Preferably, a ladder is provided on one side of the liftable welding platform.

[0009] Preferably, guardrails and handrails are provided around the liftable welding platform.

[0010] Preferably, a pulley block is provided at the bottom of the platform legs, and the pulley block matches a track installed on the ground.

[0011] Beneficial Effects

[0012] The utility model is easy to install and maintain, and is convenient to operate. It effectively solves the problems of difficult welding of traditional large-diameter pipe annular welds, poor quality assurance, insecurity, high labor intensity, and many potential accidents, achieves the purpose of safe and fast welding, greatly improves welding efficiency and safety, and enables the task of welding large-diameter pipes to be completed more safely, reliably, and quickly.

[0013] In addition, the utility model also has the following beneficial effects:

[0014] 1. The platform is equipped with a walking track on the working channel to realize the movement of the welding platform;

[0015] 2. The platform is equipped with a lifting welding platform, which breaks the conventional single pipe diameter welding process by adjusting the welding platform up and down, thus adapting to the welding of various large-diameter pipe annular welds;

[0016] 3. An electric adjustable roller frame is set up to rotate the pipeline module closely following the welding progress to achieve continuous and uninterrupted welding, thereby improving work efficiency;

[0017] 4. The platform has a simple structure, reasonable design, easy operation, and its scope of use is not limited by changes in pipeline diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the main view of a welding auxiliary platform for a large-diameter flue gas duct assembly that can be raised and lowered.

[0019] Figure 2 The present invention is a schematic side view of a welding auxiliary platform for a large-diameter flue gas duct assembly that can be raised and lowered.

[0020] Among them, 1-track; 2-pulley block; 3-adjustable electric roller frame; 4-platform legs; 5-reinforced support rods; 6-liftable welding platform; 7-handrails; 8-guardrails; 9-man-carrying steel plate; 10-ladder; 11-lifting device; 12-lifting guide tube; 13-connecting column; 14-guide chain; 15-lifting ring.

[0021] The same reference numerals in the various drawings represent the same components. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0023] like Figure 1 , 2 As shown, the utility model provides a liftable large-diameter flue gas duct assembly welding auxiliary platform, including a liftable welding platform 6 and an adjustable electric roller frame 3, the adjustable electric roller frame 3 is used to support and rotate the pipe to be welded, the liftable welding platform 6 is arranged on the upper part of the pipe to be welded through the platform legs 4, and a lifting device 11 is provided at the center of the liftable welding platform 6, and the manned steel plate 9 is raised or lowered to above the welding end of the pipe to be welded by the lifting device 11.

[0024] In a specific embodiment, the lifting device 11 includes lifting rings 15 provided below both sides of the liftable welding platform 6, the lifting rings 15 are connected to the manned steel plate 9 through an electric hoist or a hand hoist, and lifting guide tubes 12 are provided at the four corners of the manned steel plate 9, and the lifting guide tubes 12 are provided with pin holes, and the position of the lifting guide tubes 12 can be locked by fixing pins to prevent accidental lifting of the manned steel plate 9. In other embodiments, the lifting device 11 can be a compressed air cylinder, etc.

[0025] The adjustable electric roller frame 3 includes a base, and the two sides of the base are connected to the arc-shaped roller frame through a rotating shaft, and an electric roller is provided at each end of the roller frame. The electric roller can be rotated by remote control, and all the electric rollers rotate in the same direction to drive the pipe to be welded to rotate around its axis, so that the workers above it can perform welding.

[0026] A ladder 10 is provided on one side of the liftable welding platform 6 , and the ladder 10 rises from the ground to the top of the liftable welding platform 6 , so that people can go up and down.

[0027] The outer periphery of the liftable welding platform 6 is provided with a guardrail 8 and a handrail 7 , and the guardrail 8 has an opening or a guardrail door communicating with the ladder 10 .

[0028] A pulley block 2 is provided at the bottom of the platform leg 4, and the pulley block 2 matches the track 1 installed on the ground. The pulley block 2 has a controllable braking device to prevent movement after being in place.

[0029] When the utility model is used, tracks 1 are first laid on both sides of the working channel of the welding area of ​​the smoke duct module pipe section interface group, and the platform bracket, the pulley group 2, the external ladder 10 and the upper guardrail 8 are assembled and installed as a whole on the laid walking track 1.

[0030] After the installation of the above components is completed, the installation of the liftable welding platform 6 is carried out. First, a lifting ring 15 is set in the middle of both sides of the upper frame of the platform leg 4, and the guide chain 14 of the electric hoist is hung on the lifting ring 15. After the lifting guide tube 12 and the lifting welding platform are assembled offline, connecting columns 13 are set at the four corners of the platform. The steel wire rope of the electric hoist is tied to the connecting column 13 and the length of the steel wire rope on both sides is ensured to be consistent. After the liftable welding platform 6 is assembled as a whole, it is moved to the movable bracket and the guide chain 14 installed on the upper frame is installed. After the guide chain 14 and the liftable welding platform 6 are installed, the guide chain 14 is used to lift the manned steel plate 9 as a platform to the working height.

[0031] When the above-mentioned liftable welding platform 6 is in operation, the pipe module to be welded is first placed on the adjustable electric roller frame 3 in the assembly welding area, and then the platform legs 4 are pushed to the top of the ring weld of the assembled pipe section through the track 1. The operator enters the liftable welding platform 6 through the external ladder 10 and takes safety precautions. After the preparatory work is completed, the manned steel plate 9 is adjusted to the optimal height through the guide chain 14 according to the diameter of the pipe to be welded. After the height adjustment is completed, the fixing pin is inserted into the lifting guide tube 12.

[0032] After all the above work is completed, the welder will weld the pipe on the liftable welding platform 6. After the effective length welding is completed, the welder can rotate the flue gas pipe module by remotely controlling the adjustable welding roller frame, continue welding, and cycle until the pipe group is welded.

[0033] The liftable welding platform 6 breaks through the pipe diameter limitation and can be applied to the group welding of large pipes with multiple pipe diameters. The height of the liftable welding platform 6 can be adjusted autonomously according to the diameter of the large pipe, so that the welding personnel are in the most suitable welding position, and continuous welding is achieved through the adjustable roller frame, which greatly improves the welding efficiency. The device is used in large-diameter pipe interface welding and group welding operations, which can not only greatly improve the welding quality, improve the construction efficiency, and reduce the construction cost, but also eliminate the hidden dangers of high-altitude operations and reduce safety risks, and has promotion value.

Claims

1. A lifting and lowering large diameter flue gas duct assembly welding auxiliary platform, characterized in that: The invention comprises a liftable welding platform (6) and an adjustable electric roller frame (3), wherein the adjustable electric roller frame (3) is used to support and rotate the pipe to be welded, the liftable welding platform (6) is arranged on the upper part of the pipe to be welded through platform legs (4), and a lifting device (11) is arranged at the center of the liftable welding platform (6), and a manned steel plate (9) is raised or lowered to above the end to be welded of the pipe to be welded by the lifting device (11).

2. The auxiliary platform for welding large-diameter flue gas ducts according to claim 1 is characterized in that: The lifting device (11) comprises lifting rings (15) arranged below both sides of the liftable welding platform (6); the lifting rings (15) are connected to the manned steel plate (9) via an electric hoist or a hand hoist; and lifting guide tubes (12) are arranged at the four corners of the manned steel plate (9).

3. The auxiliary platform for welding large-diameter flue gas ducts according to claim 1 is characterized in that: The adjustable electric roller frame (3) comprises a base, the two sides of which are connected to the arc-shaped roller frame via a rotating shaft, and an electric roller is respectively arranged at the two ends of the roller frame.

4. The auxiliary platform for welding large-diameter flue gas ducts according to claim 1 is characterized in that: A ladder (10) is provided on one side of the liftable welding platform (6).

5. The auxiliary platform for welding large-diameter flue gas ducts according to claim 1 is characterized in that: The liftable welding platform (6) is provided with guardrails (8) and handrails (7) around it.

6. The auxiliary platform for welding large-diameter flue gas ducts according to claim 1 is characterized in that: A pulley block (2) is provided at the bottom of the platform support leg (4), and the pulley block (2) matches the track (1) installed on the ground.

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