KR200317494Y1 - The prefabricated scaffolding - Google Patents

Abstract

The present invention relates to a prefabricated scaffold for internal inspection and repair of a spherical tank for storing fluid such as a high pressure gas, and in particular, a scaffold is installed prefabricated inside a spherical tank. The maintenance work is performed safely and conveniently. After completion of inspection and repair work, the disassembled and disassembled scaffolding device can be reassembled and used.

Description

Prefabricated scaffolding for internal inspection and repair of spherical tanks for storage of fluids such as high pressure gas

The present invention relates to a prefabricated scaffold for internal inspection and repair of a spherical tank for storing fluid such as a high pressure gas, and in particular, a scaffold is installed prefabricated inside a spherical tank. The scaffolding device that is easily disassembled and disassembled after the inspection and repair work is completed is installed on the scaffolding for the internal inspection and repair of the old tank for storing fluid such as high pressure gas. It is about.

In general, a tank for storing a fluid such as a high pressure gas is formed into a spherical shape by forming a steel plate of the unit, and the upper and lower ends are provided with a manhole for the operator to enter and exit during inspection and repair. Since safety is the most important factor of these old tanks, scaffolds should be installed inside old tanks according to Article 17 of the High Pressure Gas Safety Management Act, Article 36 (2) of the Industrial Safety and Health Act, and other facilities. At the same time, the scaffold will be inspected and repaired by the operator.

This scaffolding has the advantage of being able to carry out the inspection and repair work in the old tank, but since the scaffold is manually installed through skilled workers in the old tank, it takes not only a lot of installation work but also the age group of skilled workers in the 3D industry. This is aging.

Therefore, not only the work efficiency is greatly reduced, but also no safety device is provided, so there is always a risk of safety accidents due to disasters such as falling during work, and it takes a long time to dismantle the scaffold after inspection and maintenance work is completed. As a result, various problems of manufacturing and inspection costs have been raised.

Therefore, the object of the present invention was devised in view of the above-described conventional problems, and the scaffold is installed in the old tank, and after installation, the scaffold is freely moved up, down, left and right, and the inspection and maintenance work in the old tank is safe and convenient. After the inspection and repair work is completed, the easily disassembled and disassembled scaffolding device is to provide a prefabricated scaffolding device for the internal inspection and repair of the old tank for the storage of fluids such as high pressure gas so that it can be reassembled and used.

1 is a front view showing a state in which a prefabricated scaffolding is installed in a spherical tank according to the present invention,

Figure 2 is a plan view showing a state in which the prefabricated scaffolding according to the present invention is installed in the old tank,

Figure 3 is an enlarged cross-sectional view of the main part of the worktable left and right rotating apparatus according to the present invention,

Figure 4 is a plan view showing a state before the operation of the worktable left and right rotating apparatus according to the present invention,

Figure 5 is a plan view showing a state in which the worktable left and right rotating apparatus according to the present invention,

Figure 6 is an enlarged view of the main portion of the work table up and down rotation apparatus according to the present invention.

(Explanation of symbols for the main parts of the drawing)

100; Shaft 200; Moving frame 300; bench

400; Vertical rotating device 500; Left and right rotating device 600; flange

700; Fastening member

As a means for achieving the above object, the present invention, the shaft is vertically assembled in the inside of the old tank, the moving frame is assembled in the middle of the shaft and moved up and down and left and right, the moving frame is assembled to the end of the operator To provide a workbench and a prefabricated scaffold consisting of a vertical rotating device for moving the movable frame up and down and left and right, and a left and right rotating device,

This prefabricated scaffold is a technical feature of the technical construction that is fastened and fastened by a fastening member through each flange, assembled inside the old tank during inspection and repair work, and disassembled and reused after the work is completed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing a prefabricated scaffold according to the present invention installed in an old tank, Figure 2 is a plan view showing a prefabricated scaffold according to the present invention installed in an old tank, Figure 3 is a work table according to the present invention An enlarged cross-sectional view of the main part of the rotating device, Figure 4 is a plan view showing a state before the operation of the worktable left and right rotating apparatus according to the present invention, Figure 5 is a plan view showing a state in which the working table left and right rotating apparatus according to the present invention, 6 is an enlarged view of main parts of the work table up and down rotation apparatus according to the present invention.

The present invention is to be installed in the old tank (B) as shown in Figures 1 to 6 largely vertically assembled in the inside of the old tank, and is assembled in the middle of the shaft 100 to move up and down and left and right Moving frame 200, the worktable 300 is assembled to the end of the moving frame 200, the operator boards, and the vertical rotating device 400 and the left and right rotating device for moving the moving frame 300 up and down and left and right ( 500).

The shaft 100, the moving frame 200, the work table 300, the vertical rotating device 400, the left and right rotating device 500 is an appropriate size so that the entry and exit through the upper manhole and the lower manhole of the spherical tank (B). It is manufactured in units with, each component manufactured in the unit is fastened by the flange 600 and the fastening member 700 has a configuration that is assembled and disassembled into a prefabricated scaffold (A).

On the other hand, the worktable left and right rotating apparatus 500 is the upper and lower pedestals 11 and 12 integrally formed on the shaft 100, and the eccentric shaft fixed or left and right rotated according to the purpose of use in the upper pedestal (11) 30) and the base frame 20 rotatable from the lower pedestal 12, the screw 40, the fixing table 50 and the guide unit integrally connected to the base frame 20 to rotate the work table 300 60 is mobilized by default.

The upper and lower pedestals 11 and 12 extend outwardly at regular intervals at the middle upper and lower ends of the shaft 100 installed vertically in the spherical tank B, and the upper pedestal 11 has a plurality of spaces at regular intervals. When the insertion groove 11a is formed, and the insertion groove 11a coincides with the insertion groove 32 of the eccentric shaft 30, the fixing pin 33 is inserted so that the eccentric shaft 30 is the upper pedestal 11. To be integrally fixed to the

The upper end of the base frame 20 is coupled to the lower pedestal 12 to form a rotating portion 21 capable of rotating left and right, and the left and right sides are formed with a moving frame 22 having a work platform 23 on which the operator boards.

The eccentric shaft 30 is seated on the upper pedestal 11 is used to form an eccentric protrusion 31 eccentric in one direction protrudes on one side and is configured to be fixed or rotated on the upper pedestal 11 according to the purpose of use. . When the eccentric shaft 30 is fixed integrally on the upper pedestal 11 by the fixing pin 33, the worktable 23 is rotatable left and right, and when the free stand on the upper pedestal, the worktable 23 rotates. It is configured not to.

One end of the screw 40 is hinged by the eccentric protrusion 31 and the connecting pin 41 of the eccentric shaft 30, the handle 42 is formed on the other end and serves to rotate the work table 23 Perform.

The upper part of the stator 50 is formed with a screw engaging portion 51 that is screwed with the screw 40, the lower end of the screw 40 is operated to move forward or backward on the stator 50, the forward and reverse It is fixedly connected to the base frame 20 so that the work platform 23 can be rotated to the left or right by transmitting.

The upper end of the fixture 50 is integrally connected with the screw 40, the lower end is integrally connected with the base frame 20, the moving frame 200, the work table 22.

Guide portion 60 is a guide rod 61 is inserted into the guide groove 52 of the fixing table 50 is formed in the horizontal direction, the bearing 62 formed on the top of the guide rod 61 is a screw 40 and The bearing is coupled and configured to allow the screw 40 to move forward or backward smoothly during operation.

This worktable left and right rotation device is matched with the insertion groove (11a) of the upper pedestal 11 and the insertion groove 32 of the eccentric shaft (30) and then the fixing pin (33) in the insertion groove (11a) (32) Insert the eccentric shaft 30 to be fixed to the upper pedestal 11 integrally.

When the handle 42 is rotated clockwise to rotate the work table 300 in the above state, the screw portion 40 is screwed to the screw engaging portion 51 of the fixing table 50, so that the guide portion 60 is rotated. Will advance as follows:

At this time, when the screw 40 is advanced, the eccentric shaft 30 is fixed on the upper pedestal 11 through the fixing pin 33 and the eccentric protrusion 31 is eccentric to one side. The forward force of the is transmitted to the base frame 20 through the fixing base 50 on the basis of the connecting pin (41).

The forward force transmitted to the base frame 20 causes the rotating part 21 to be rotated on the lower pedestal 12, and the movable frame 200 and the work table 300 integrally connected to the rotating part 21 are screw 40. ) Will be rotated by the advanced distance.

As described above, when the work platform 23 is moved to a desired place, the worker may inspect and repair the inside of the old tank B while riding on the work platform 23, and when the work is completed, the fixing pin 33 may be used for the next work. ) Is separated from the insertion groove 111, 320 to free the eccentric shaft 30 on the upper pedestal (11).

Subsequently, the insertion groove 32 of the eccentric shaft 30 is matched to the next insertion groove of the upper pedestal 11, and the eccentric shaft 30 is fixed to the upper pedestal 12 again using the fixing pin 33. If the handle 42 is rotated clockwise through the same method as described above, the work table 300 is rotated to the next place.

Meanwhile, the work table vertical rotation apparatus 400 includes first and second rope pulleys 80 and 80a for vertically rotating the moving frame 200 that is vertically rotated about the base frame 20, and the first and second ropes. The bobbin 71, the rope 90, and the driving motor 70 that operate the pulleys 80, 80a are basically mobilized.

The first rope pulley 80 and the second rope pulley 80a are independently fastened and fixed to the hooks 91 and 92 respectively formed on the outer side of the moving frame 200 and the top of the shaft 100. The first rope pulley 80 and the second rope pulley 80a are connected to each other according to the working position of the 300 and the distance from each other (81, 81a) having a constant length and the connecting rod 81 Large pulleys (83) (83a), intermediate pulleys (84) (84a) and small pulleys (85) (85a), which are located inside the (81a) and are rotatably installed at regular intervals, and the connecting table (81). The first rope pulley 80 is formed on one side, and the second rope pulley 80a is fixed to the locking ring 91 and the fixing portion 82 and 82a are respectively fixed to the locking ring 91. .

The first rope pulley 80 and the second rope pulley 80a close to each other and away from each other, one end of the rope 90 to allow the work table 300 rotates up and down is connected to the bobbin and the other end is the first rope It is organically connected to the pulley 80 and the second rope pulley 80a.

To explain this in more detail, one end of the rope 90 is connected and fixed to the side of the bobbin 71 driven by the driving motor 70, and the other end thereof is the large pulley 83 and the second rope pulley of the first rope pulley 80. (80a) large pulley (83a), first rope pulley intermediate pulley (84), second rope pulley middle pulley (84a), first rope pulley small pulley (85), second rope pulley small pulley It is connected to the end of the connecting rod 81 of the first rope pulley 80 while passing through (85a) in sequence.

Such a work table up and down rotation apparatus 400 is a work table 300 is located in the lower end of the spherical tank (B) and the worker in the state that the moving frame 200 descends to the work table 300. When the inspection and repair in the spherical tank (B) in the above state is completed, by applying power to the drive motor 70 to raise the worktable 300 to the next working position.

That is, when power is applied to the driving motor 70, the bobbin 71 rotates, and when the rope 90 is wound around the rotating bobbin 71, the first rope pulley 80 and the second rope pulley 80a are rotated. Get closer to each other. At this time, the moving frame 200 rotates upwards and raises the work bench 300 to a position to be worked.

When the worktable 300 is positioned at the upper end of the old tank while inspecting and repairing the old tank B through the above-described method, the first rope pulley 80 and the second rope pulley 80a are brought into close proximity. The rope 90 is in a state of being wound around the bobbin 71 a lot. Contrary to the above, when the driving motor 70 rotates in reverse, the bobbin 71 slowly loosens the rope 90, and the first rope pulley 80 and the second rope pulley 81 move away from each other, thereby moving the work table 300. It will be descended.

As such, when assembled and inspected in the old tank B, the inspection and repair work is completed, the fastening bolt 700 may be released, and each part may be separately disassembled and stored in a separate place for reuse.

As described above, according to the present invention, since the scaffold is installed in the old tank, the inspection and maintenance work in the old tank can be safely and simply performed while moving freely up and down and left and right after installation. Afterwards, the scaffolding device that is easily disassembled and disassembled can be used for reassembly.

In the above described the present invention with reference to a specific preferred embodiment, the present invention is not limited to the above embodiments and various changes and modifications made by those skilled in the art without departing from the spirit of the present invention Make sure you can.

Claims (1)

The shaft 100 is assembled vertically in the spherical tank (B), the moving frame 200 is assembled in the middle of the shaft 100 and moved up and down and left and right, and assembled to the end of the moving frame 200 Provide a prefabricated scaffold (A) consisting of a work platform 300 to ride, the vertical rotating device 400 and the left and right rotating device 500 for moving the moving frame 200 up and down and left and right, the prefabricated scaffolding (A) Is fastened and fixed by the fastening member 700 through each flange 600 and assembled into the old tank during the inspection and repair work, and after completion of the work, the high pressure gas and the like of the fluid is characterized in that it is reused. Prefabricated scaffolding for internal inspection and attachment of old tanks for storage.