Outer operation platform for chimney steel inner cylinder construction

Abstract

The utility model discloses an outer operating platform for chimney steel inner cylinder construction, which comprises a fixed operating platform and two movable operating platforms, one end of each movable operating platform is provided with a hinge hinged with the fixed operating platform, and the other end of each movable operating platform is provided with a fixing fastener for mutually fastening the movable operating platforms. Universal wheels with brakes are arranged at the tail end of the movable operation platform, and the fixed operation platform and the movable operation platform can define a construction platform of a closed-loop structure; a plurality of layers of annular platforms are arranged between the inner side ends of the fixed operation platform and the movable operation platform; the operation platform has the advantages that the construction mode that the operation platform is repeatedly disassembled and assembled is avoided, constructors can conduct continuous operation, construction is convenient, construction efficiency is high, safety is high, and the operation platform is simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder construction operation platforms, in particular to an external operation platform used for the construction of chimney steel inner cylinders. Background Art

[0002] The height of the chimney of a thermal power plant is generally more than 200 meters, and a chimney steel inner tube is set inside. The chimney steel inner tube is usually constructed by the inverted installation method. The multiple sections of the chimney steel inner tube are gradually welded and lifted. In order to facilitate the construction of each section of the chimney steel inner tube, it is necessary to set up an external operating platform device on the periphery of the steel inner tube for tube docking, welding, paint repair, and insulation. The conventional practice is to set up a mobile scaffolding around the steel inner tube for operation. The mobile scaffolding needs to be set up around the steel inner tube, but the construction personnel need to move up and down frequently. After the upper steel inner tube is welded and lifted upward, the new section of the tube is transported to the construction site. The mobile scaffolding needs to be pushed to an empty site to ensure that the tube enters the working position smoothly. Each time a section of the tube is welded, it is necessary to complete the movement and resetting of multiple mobile scaffoldings. There are problems such as the need to repeatedly dismantle and assemble the operating platform, the inability of construction personnel to perform continuous operations, and low construction efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an external operating platform for the construction of the steel inner tube of the chimney, which avoids the construction method of repeated dismantling and assembly of the operating platform. Construction personnel can carry out continuous work, and the construction is convenient, efficient, safe, and the operating platform has a simple structure; the problems in the background technology can be effectively solved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an external operating platform for the construction of a chimney steel inner tube, comprising a fixed operating platform and two movable operating platforms, one end of the movable operating platform is provided with a hinge hinged to the fixed operating platform, and the other ends of the two movable operating platforms are provided with fixed fasteners for interlocking them, the end of the movable operating platform is provided with a universal wheel with a brake, the fixed operating platform and the movable operating platform can be enclosed to form a construction platform with a closed ring structure; a plurality of layers of annular platforms are provided between the inner ends of the fixed operating platform and the movable operating platform.

[0005] Furthermore, the fixed operating platform and the movable operating platform are both arc-shaped platform structures, and the fixed operating platform and the movable operating platform can be enclosed to form a circular operating platform structure.

[0006] Furthermore, the fixed operating platform and the movable operating platform each include a plurality of platform supporting units; the platform supporting units include columns, and a plurality of horizontally arranged beams are welded to the inner ends of the columns along the vertical direction; the columns of the fixed operating platform and the columns of the movable operating platform are arranged at equal intervals along their contour directions, and pedals are welded between adjacent columns on the fixed operating platform and between adjacent columns on the movable operating platform, and the pedals are all arc-shaped patterned steel plates; a circular platform is formed between the pedals on the fixed operating platform and the movable operating platform.

[0007] Furthermore, both the fixed operating platform and the movable operating platform are provided with guardrails.

[0008] Furthermore, connecting ring beams are welded between the cross beams at the bottom layer of the fixed operating platform and between the cross beams at the bottom layer of the movable operating platform.

[0009] Furthermore, connecting steel pipes are welded between adjacent columns on the fixed operating platform and between adjacent columns on the movable operating platform.

[0010] Furthermore, a ladder is provided at the outer end of the fixed operating platform.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the external operating platform used for the construction of the steel inner tube of the chimney forms an openable and closable circular operating platform through a fixed operating platform and two movable operating platforms, which is convenient for the chimney steel inner tube to enter and exit the operating platform, avoiding the construction method of repeated dismantling and assembly of the operating platform, and the construction personnel can carry out continuous work, which is convenient for construction, high in construction efficiency and high in safety; the external operating platform used for the construction of the steel inner tube of the chimney is provided with a three-layer circular platform, which allows the construction personnel standing on the circular platforms on different layers to carry out construction at the same time, which improves the safety of on-site operations and allows the construction personnel to carry out continuous operations, and has a simple structure and high structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a top view of the external operating platform used for the construction of the chimney steel inner tube of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the movable operating platform of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the outer operating platform closed for the construction of the chimney steel inner tube of the utility model;

[0016] Figure 5 This is a side view of the platform support unit of the utility model;

[0017] Figure 6 This is a partial enlarged view of the hinged part of the fixed operating platform and the movable operating platform of the utility model;

[0018] Figure 7 This is a partial enlarged view of the fixed buckle position of two movable operating platforms of the utility model;

[0019] Figure 8 This is a schematic diagram of the structure of the utility model in an open state when in use;

[0020] Fig. 9 It is a schematic diagram of the structure of the utility model in a closed state when in use.

[0021] In the figure: 1. Fixed operating platform; 2. Movable operating platform; 3. Platform support unit; 31. Column; 32. Crossbeam; 33. Pedal; 34. Guardrail; 35. Connecting ring beam; 4. Universal wheel with brake; 5. Hinge; 6. Fixed fastener; 7. Ladder; 8. Connecting steel pipe; 900, Chimney steel inner tube. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0023] See also Figure 1-9The utility model provides a technical solution: an external operating platform for the construction of a chimney steel inner tube, comprising a fixed operating platform 1 and two movable operating platforms 2, one end of the movable operating platform 2 is provided with a hinge 5 hinged to the fixed operating platform 1, and the other ends of the two movable operating platforms 2 are provided with fixed fasteners 6 for interlocking, the end of the movable operating platform 2 is provided with a universal wheel 4 with a brake, the fixed operating platform 1 and the movable operating platform 2 can be enclosed to form a construction platform of a closed ring structure; the fixed operating platform 1 and the movable operating platform 2 each include a plurality of platform support units 3 The platform support unit 3 includes a column 31, and a plurality of horizontally arranged beams 32 are welded to the inner end of the column 31 along the vertical direction. The columns 31 of the fixed operating platform 1 and the columns 31 of the movable operating platform 2 are arranged at equal intervals along their contour directions, and pedals 33 are welded between adjacent columns 31 on the fixed operating platform 1 and between adjacent columns 31 on the movable operating platform 2, and the pedals 33 are all arc-shaped patterned steel plates; a circular platform is formed between the pedals 33 on the fixed operating platform 1 and the movable operating platform 2; a ladder 7 is provided at the outer end of the fixed operating platform 1.

[0024] The fixed operating platform 1 in this embodiment is a semicircular platform structure, and the movable operating platform 2 is an arc-shaped platform structure, and the fixed operating platform 1 and the movable operating platform 2 can be enclosed to form a circular operating platform structure; in this embodiment, three layers of cross beams 32 are arranged on the column 31, that is, the external operating platform used for the construction of the chimney steel inner tube is provided with a three-layer circular platform.

[0025] Working principle:

[0026] The construction workers enter the pedal 33 of the movable operating platform 2 through the ladder 7 on the fixed operating platform 1 and open the upper fixed fastener 6. Then the construction workers return to the safe position of the fixed operating platform 1. The construction workers below open the universal wheel 4 with brakes under the movable operating platform 2, pull the column 31 of the movable operating platform 2 to make it slide, and the movable operating platform 2 rotates and moves around the connecting hinge 5. After opening the movable operating platforms 2 at both ends, the universal wheel 4 with brakes is closed. A section of the chimney steel inner tube 900 is pushed into the operating platform along the opening of the movable operating platform 2 by an external transfer trolley, and the section is lifted to a certain height by an external lifting device, and a new section of the cylinder is transferred to the operating platform by an external transfer trolley. Then, the movable operating platforms 2 at both ends are closed to form a complete circular operating platform, and the fixing fasteners 6 are closed. The construction personnel use the pedal 33 at the upper end of the crossbeam 32 to carry out construction operations such as docking, welding, repainting and insulation between the cylinders. After the construction is completed, the welded cylinder is lifted to a certain height according to the above method, and the new section of the cylinder is once again transferred to the operating platform for construction operations.

[0027] The external operating platform used for the construction of the chimney steel inner tube in this embodiment is provided with a three-layer circular platform, providing three layers of standing space for the construction workers. The construction workers on the lower circular platform carry out joint and welding construction between the tube bodies, the construction workers on the middle circular platform carry out welding construction on the tube bodies, and the construction workers on the upper working platform carry out paint repair and insulation construction on the tube bodies.

[0028] The external operating platform for the construction of the steel inner tube of the chimney disclosed in this embodiment forms an openable and closable circular operating platform through a fixed operating platform 1 and two movable operating platforms 2, which facilitates the chimney steel inner tube 900 to enter and exit the operating platform, avoids the construction method of repeated dismantling and assembly of the operating platform, and allows construction personnel to perform continuous operations, thereby improving construction efficiency. The external operating platform for the construction of the steel inner tube of the chimney is provided with a three-layer circular platform, which allows construction personnel standing on different layers of the circular platforms to perform construction at the same time, thereby improving the safety of on-site operations and allowing construction personnel to perform continuous operations. The structure is simple and the structural strength is high.

[0029] Furthermore, both the fixed operating platform 1 and the movable operating platform 2 are provided with guardrails 34, and the guardrails 34 provide safety protection for construction workers.

[0030] Furthermore, connecting ring beams 35 are welded between the bottom beams 32 of the fixed operating platform 1 and the bottom beams 32 of the movable operating platform 2, and the stability of the overall structure of the operating platform is increased by connecting the ring beams 35. Connecting steel pipes 8 are welded between adjacent columns 31 on the fixed operating platform 1 and adjacent columns 31 on the movable operating platform 2, and the columns 31 are reinforced by the connecting steel pipes 8.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An external operating platform for the construction of chimney steel inner tube, comprising a fixed operating platform and two movable operating platforms, characterized in that: One end of the movable operating platform is provided with a hinge hinged to the fixed operating platform, and the other ends of the two movable operating platforms are provided with fixed fasteners for interlocking them, and the end of the movable operating platform is provided with a universal wheel with a brake, and the fixed operating platform and the movable operating platform can be enclosed to form a construction platform with a closed ring structure; a plurality of layers of annular platforms are provided between the inner ends of the fixed operating platform and the movable operating platform.

2. The external operating platform for chimney steel inner tube construction according to claim 1, characterized in that: The fixed operating platform and the movable operating platform are both arc-shaped platform structures, and the fixed operating platform and the movable operating platform can be enclosed to form a circular operating platform structure.

3. The external operating platform for chimney steel inner tube construction according to claim 2 is characterized by: Both the fixed operating platform and the movable operating platform include a plurality of platform supporting units; the platform supporting units include columns, and a plurality of horizontally arranged beams are welded to the inner ends of the columns in the vertical direction; the columns of the fixed operating platform and the columns of the movable operating platform are arranged at equal intervals along their contour directions, and pedals are welded between adjacent columns on the fixed operating platform and between adjacent columns on the movable operating platform, and the pedals are all arc-shaped patterned steel plates; a circular platform is formed between the pedals on the fixed operating platform and the movable operating platform.

4. The external operating platform for chimney steel inner tube construction according to claim 3 is characterized by: Both the fixed operating platform and the movable operating platform are provided with guardrails.

5. The external operating platform for chimney steel inner tube construction according to claim 3 is characterized by: Connecting ring beams are welded between the cross beams at the bottom layer of the fixed operating platform and between the cross beams at the bottom layer of the movable operating platform.

6. The external operating platform for chimney steel inner tube construction according to claim 3 is characterized by: Connecting steel pipes are welded between adjacent columns on the fixed operating platform and between adjacent columns on the movable operating platform.

7. The external operating platform for chimney steel inner tube construction according to claim 1 is characterized by: A ladder is provided at the outer end of the fixed operating platform.

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