KR101266282B1 - Construction and dismantle method of scaffolding device for heat power plant - Google Patents

Abstract

PURPOSE: A wire scaffold installation and a dismantlement method thereof are provided to block the concentration loads to a lower part by dispersing the loads of a scaffold. CONSTITUTION: A work before installing a wire scaffold is performed, and a lower structure is installed inside of a sloped tube. An upper beam structure is installed on a plate-shaped tube bundle and a hanger tube bundle. Access stairs are installed from a lower foothold installed in the lower part of the slope tube to an upper part of the slope tube. A plurality of corner foothold sections is formed in a vertical direction from the upper part of the slope tube. A safety board is installed on the top end of the corner foothold section, and a plurality of front foothold sections is formed in the vertical direction from the top end of the corner foothold section. [Reference numerals] (AA) 20th stage; (BB) 19th stage; (CC) 18th stage; (DD) 17th stage; (EE) 16th stage; (FF) 15th stage; (GG) 14th stage; (HH) 13th stage; (II) 12th stage; (JJ) 11th stage; (KK) 10th stage; (LL) 9th stage; (MM) 8th stage; (NN) 7th stage; (OO) 6th stage; (PP) 5th stage; (QQ) 4th stage; (RR) 3rd stage; (SS) 2nd stage; (TT) 1st stage; (UU) 0th stage

Description

How to install and dismantle the furnace wire scaffolding {CONSTRUCTION AND DISMANTLE METHOD OF SCAFFOLDING DEVICE FOR HEAT POWER PLANT}

The present invention relates to a furnace wire scaffolding installation and dismantling method necessary for performing inspection and maintenance work on a water wall tube, a hanger tube bundle, etc. in a thermal power plant.

Thermal power plants generate electricity by spinning turbines with high-pressure steam from boilers. Thermal power plants should be regularly checked and repaired. Thermal power plant inspection and maintenance work consists of first installing a workbench using scaffolding, inspecting and maintaining the boiler while the worker moves through the installed workbench, and dismantles the installed workbench when the work is completed.

Korean Utility Model Publication No. 20-0408501 has a frame in which a plurality of horizontal bars are installed between a pair of vertical bars, a side connecting member for connecting a pair of frames so as to overlap, and a plurality of frames are connected in the longitudinal direction. It consists of a length connecting member for connecting and fixing the contact portion of each frame to be used. Frames are connected to each other by using the side connecting members so that they can be floated, and the plurality of frames are connected in the longitudinal direction using the length connecting members so that the operator can reach the working position. When inserted between the tubes and unfolded, the upper side connecting member is implemented to be mounted on the screen tube.

The furnace wire scaffold for vertical tube operation of thermal power plant according to the prior art is composed of an assembly such as a frame, a side connecting member, a length connecting member, and the like. It is easy to transport the inside of the furnace through the manhole.

However, the prior art is excellent in accessibility inside the boiler furnace, it is not a scaffolding device that can be operated by several workers at the same time, and since the height of the boiler reaches several tens of meters, to work at high places, a plurality of frames using length connecting members Since there is a need to connect the in the longitudinal direction there is a problem that the work stability and scaffold durability falls.

In addition, the scaffolding system for internal inspection and work of large boilers for power generation projects has a high installation height of about 50m, and the scaffolding system of the structure stacked from the bottom is likely to collapse due to the concentration of load on the lower part of the structure.

In this regard, the present applicant intends to propose a method of installing and dismantling a wire scaffold that allows multiple workers to work safely at the same time.

Korean Utility Model Registration No. 20-0408501 (Registration date 2006.02.03)

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a furnace wire scaffolding installation and disassembly method that can prevent the load is concentrated only to the bottom by dispersing the load of the scaffold up and down.

It is another object of the present invention to provide a furnace wire scaffolding installation and dismantling method required for multiple workers to safely perform inspection and maintenance work on water wall tubes, hanger tube bundles, etc. in a thermal power plant. will be.

In order to achieve the above object, the furnace wire scaffolding installation method according to an aspect of the present invention is the plate and superheater tube bundle inside the furnace (Platen Superheater Tube Bundles) and the hanger tube bundle (Hanger Tube Bundle) on the inspection scaffold and lighting After installing the first step of winch (Winch) and pulley on the furnace 10th floor and installing the second winch (Winch) and pulley on the furnace 1st floor, and installing the lower scaffold at the bottom of the slope tube Installing a plurality of lower scaffold trusses connecting the sides, firmly fixing the plurality of lower scaffold trusses installed diagonally, and then assembling the scaffold between the plurality of lower scaffold trusses;

After installing an isometric angle on a hanger tube bundle, fixing a plurality of support beams to which a shoebel hook and a fixed force computer bolt are fastened to each other so as to be spaced apart from each other, and connecting a wire rope to a first hoist ) To the 10th floor of the furnace using the auxiliary wire connected to the pulley and fastening to the shovel hook, and installing an access step from the lower scaffold installed below the slope tube to the top of the slope tube, and vertically from the top of the slope tube And forming a plurality of corner scaffold sections in the direction, and installing a safety scaffold at the top of the corner scaffold section and forming a plurality of front scaffold sections in a vertical direction from the top of the corner scaffold section.

In the furnace wire scaffolding dismantling method according to another aspect of the present invention, the inspection scaffolding and lighting are installed on the plate superheater tube bundles and the hanger tube bundles inside the furnace. The first hoist (Winch) and the pulley is installed, the second hoist (Winch) and the pulley is installed on the first floor of the furnace, the lower scaffold is installed in the lower portion of the slope tube and a plurality of lower truss for connecting both sides of the slope tube It is installed, and the plurality of lower truss trusses installed diagonally fixed is firmly fixed, the footstool is assembled between the plurality of lower truss truss, isometric angle is installed on the Hanger Tube Bundle, the shovel hook and fixing force A plurality of support beams to which the computer bolts are fastened are fixedly installed at the conformal angles to be spaced apart from each other, and a wire rope is connected to the first winch and the pulley. It is transferred to the 10th floor of the furnace by using the auxiliary auxiliary wire, which is fastened to the shovel hook, and an access step is installed from the lower scaffold installed below the slope tube to the upper part of the slope tube. In the furnace wire scaffold formed and installed, the safety scaffold is installed at the top of the corner scaffolding section, and a plurality of front scaffolding sections are formed in a vertical direction from the top of the corner scaffolding section, the safety scaffolding disassembly step, the hoist and the auxiliary The wire rope dismantling step that separates the wire rope from the shovel hook and lowers the slope tube using the wire, the support beam installed at the upper part of the hanger tube bundle, the dismantling angle and the shovel hook, and the dismantling of the winch Steps, upper platen superheater tube bundles inside the furnace and It includes the step of removing the inspection scaffold and lamps installed on the top of the Hanger Tube Bundle.

According to the configuration as described above, the method for installing the furnace wire scaffolding according to the present invention, after installing the upper support structure and the wire rope, including the conformal angle, support beam, computer bolts, shovel hooks from the bottom of the slope tube As a result, the entire load is concentrated on the upper boiler tube, so that the load can be distributed up and down to prevent the load from being concentrated only at the bottom.

In addition, by installing the wire scaffold in the furnace in accordance with the present invention, it allows multiple operators to perform safely during the furnace inspection and repair work at the same time.

Further, by dismantling the furnace wire scaffolding according to the present invention, the furnace wire scaffold can be safely dismantled.

1A and 1B are exemplary views for explaining the overall structure of the furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.
2 and 3 are exemplary views in which the upper beam structure is installed.
4 is an exemplary view in which the access stairs are installed from the bottom of the slope tube to the top thereof.
5A to 5D are exemplary views in which parts of the furnace wire scaffold are installed.
Figure 6 shows the scaffold fixture of the furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.
7A and 7B show the first and second joint pin fitting plates.
8 shows a joint pin.
Figure 9 shows a coupling member of the furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.
10 shows a second scaffolding pipe holding plate.
11 shows a join key.
12 shows a join collar.
13 illustrates a crossbar of an in-house wire scaffold for thermal power plant operation according to an embodiment of the present invention.
14 shows a furnace inner wall brace of an furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.
Figure 15 shows the vertical tension of the furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.
16 shows that the rotary joint fixing plate and the upper and lower joint pin fitting plates are mounted.
17 shows the pipe holding plate.
18 shows the rotary joint fixing plate.
19 shows a guide rail of the furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.
20 shows the wire bond.
21 shows the wire clamping plate.
Figure 22 shows the wire fixing of the furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.
23 shows the hook.
24 shows a rod fixing jig.
25 illustrates a furnace wire scaffolding installation method for a thermal power plant operation according to an embodiment of the present invention.
Figure 26 illustrates a furnace wire scaffold dismantling method for a thermal power plant operation according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

1A and 1B are exemplary views for explaining the overall structure of the furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.

In FIG. 1, section A is a section in which an upper beam structure is installed in a plate superheater tube bundle and a hanger tube bundle in a furnace, and section B is a plurality of stages from 6 to 20 stages, for example. Section C is the section where the front scaffold is installed, Section C is the section where the corner scaffolding is installed from the 0th stage to the fifth stage, Section D is the section where the access stairs and the lower scaffold truss are installed from the bottom of the slope tube to the top of the slope tube, E The section is a section in which the lower scaffold is installed.

As shown in Figure 2, after fixing the upper beam structure to the Hanger Tube Bundle (Hanger Tube Bundle) hanger tube bundle (Hanger Tube Bundle) is prevented because the deflection caused by the load may damage the tube In order to cover the bundles supporting the upper tube bundle and the lower support beam with the wires 7 and turn the turnbuckle 8 or the chain block in the middle to adjust the length by using the turnbuckle 8 or the chain block. To prevent sagging of the tube bundle.

As shown in Figures 2 and 3, the upper beam structure includes a support beam, high tension computer bolts 71, shovel hooks 72, conformal angles (4), channels (3). The upper beam structure is selected according to the site conditions among the methods of transporting from the bottom using a 0.5t winch installed in the furnace through the hanger tube bundle inspection manhole or installed in the furnace. It is installed after assembling high tension computer bolt (71) and shoe bell hook (72) in the upper part of the Hanger Tube Bundle. 3 (c), the plurality of wire ropes 2 are provided with a coupling member 20 at regular intervals.

4 is an exemplary view in which the access stairs are installed from the bottom of the slope tube to the top thereof. The access stairs 9 are installed in close contact with the slope tube (inclined at 55 degrees) from the bottom. The lower part is fixed between the bottom truss and the truss by fixing the c-shaped steel (8) of length 3000mm and then fitting the bottom of the access stairs (9) to the c-shaped steel groove. As shown in FIG. 4B, the worker climbs to the top of the slope tube through the access stairs 9 and installs the corner scaffold.

5A to 5D are exemplary views in which parts of the furnace wire scaffold are installed. In FIG. 1A, parts of the furnace scaffold are assembled in section B where a plurality of front steps are installed from 6 to 20 steps and section C where corner steps are installed from 0 steps to 5 steps.

In FIG. 5A, the scaffold pipe 11 of the scaffold base is fixed to the coupling member 20 to which the wire rope 2 is coupled by the joint pin 14. In FIG. 5B, the safety scaffold 1 and the triangular scaffold 6 are fixed to the scaffold pipe 11 of the scaffold base, and the guide rails 60-1 and 60-2 and the inner wall brace 40 are installed.

When the safety footrest (1) and the triangular footrest (6) are installed up to two stages, the steel pipe pipe (48.6Ø * 2.3t * 1400mm) opposite to the tripod foot (6) is diagonal to the crossbar to prevent shaking of the footrest. Can be tightened. When the safety footrest (1) and the triangular footrest (6) are installed, the footholds are connected to the coupling member (20) with the joint pins (14), and they can be rotated. do.

A rubber pad is fastened to the support plate 43 of the inner wall brace 40 to increase the bearing force with the furnace wall surface, and the pipe length adjusting nut 42 is rotated to push the wall surface to support the gap (250 to 3000 mm). Keep).

Figure 5c (a) is a mounting scaffold that is used when assembling the upper end at the end of the current assembly is used to assemble the upper end while moving to the installation position and used as a stepping foot mounted on both sides of the scaffold fixing.

As shown in FIG. 5C (b), the safety scaffold and other accessories required for each stage are assembled by transporting them to the required position using a 0.5Ton hoist (Winch) located at each corner.

In order to secure a moving passage in the safety scaffold as shown in Figure 5d in each corner in connection with the triangular scaffold in each step of the ladder 121 for the scaffold pedestal 11 of the scaffold base, but if a variable occurs in the field situation Modified installations to match site conditions.

Figure 6 shows the scaffold fixture of the furnace wire scaffold for thermal power plant operation according to an embodiment of the present invention.

As shown in FIGS. 6, 7A to 7B, and 8, the scaffold holder 10 is mounted to the scaffold pipe 11 and the end of the scaffold pipe 11 and has a first joint pin 14 fitted therein. A first joint pin fitting plate 12 in which the fitting portion 121 is formed, and a second fitting portion 131 into which the joint pin 14 is fitted are formed, and the first fitting portion 121 and the second fitting portion ( And a second joint pin fitting plate 13 engaged with the first joint pin fitting plate 12 by a joint pin 14 fitted to the 131.

As shown in FIGS. 9 to 12, the coupling member 20 includes a plurality of third fittings in which a first through portion 211 is formed at the center and a joint pin 14 is fitted around the first through portion 211. A first support for inserting the first scaffold pipe fixing plate 21 having the portion 212 and the first through portion 211 of the first scaffold pipe fixing plate 21 to support the first scaffold pipe fixing plate 21. The second scaffold pipe fixing plate 22 having the groove 221 and the second through part 222 through which the wire rope 2 penetrates in the center, and the third through part 231 are formed in the center and the third through part is formed. A third scaffold pipe fixing plate 23 for inserting and protecting the second scaffolding pipe fixing plate 22 through a portion 231 and a second penetrating portion 222 of the second scaffolding pipe fixing plate 22, 2 tightening key 24 for tightening the wire rope 2 penetrating through the through part 222, and a wire rope 2 penetrating the second through part 222 of the second scaffold pipe fixing plate 22 at the center thereof. Autumn tube The fourth through part 251 is formed therethrough, and includes a fastening collar 25 having a coupling groove 252 to which the tightening key 24 is coupled and a fitting hole 253 formed around the fourth through part 251. .

As shown in FIG. 10 (a), the second scaffold pipe fixing plate 22 may further include a second support groove 223 for supporting the third scaffold pipe fixing plate 23. As shown in FIG. 10 (b), the inner surface 224 of the second scaffold pipe fixing plate 22 may be implemented to be inclined at an angle of about 5 ° to the ground.

As shown in FIGS. 11A and 11B, the tightening key 24 may be implemented such that its outer circumferential surface is inclined at an angle of about 5 ° to the ground. The wire rope is installed to penetrate the second through portion 222 of the second scaffold pipe fixing plate 22, and the wire rope is fixed by sandwiching the tightening key 24 between the second through portion 222 and the wire loop. .

As shown in FIG. 13, the crossbars 30-1 and 30-2 are mounted at the end of the scaffolding pipe 31 and have an upper joint having a first fitting hole 321 into which the joint pin 14 is fitted. An upper joint pin fitting plate 32 is formed by a pin fitting plate 32 and a second fitting hole into which the joint pin 14 is fitted, and a joint pin fitted into the first fitting hole 321 and the second fitting hole. And a lower joint pin fitting plate 33 to engage with.

Furnace inner wall brace 40, as shown in Figure 14, the length of the adjustable pipe 41, the pipe length adjustment nut coupled to the pipe 41 to allow the user to adjust the length of the pipe 41 (42), a support plate (43) formed at one end of the pipe (41) and supporting the inner wall of the boiler furnace, and mounted at the end of the scaffold pipe (44) connected to the pipe (41), and the joint pin (14) is fitted. An upper joint pin fitting plate 45 in which the first fitting hole 451 is formed, and a second fitting hole 461 in which the joint pin 14 is fitted are formed, and the first fitting hole 451 and the second fitting hole are formed. And a lower joint pin fitting plate 46 which engages with the upper joint pin fitting plate 45 by a joint pin fitted to the ball 461.

As shown in FIGS. 15 to 18, the vertical casters 50-1 and 50-2 are mounted to the scaffold pipe 51 and the end of the scaffold pipe 51, and the rotary joint pin fastening portion 521 is provided. Rotating joint fixing plate 53 formed with a pipe fixing plate 52 to be formed, a rivet nut 531 into which the rotary joint fastened to the rotary joint pin fastening portion 521 of the pipe fixing plate 52 is inserted, and a rotary joint fixing plate. The upper joint pin fitting plate 54 is formed to be fixed to the 53 and the first fitting portion 541 to which the joint pin 14 is fitted, and the second fitting portion to which the joint pin 14 is fitted are formed. And a lower joint pin fitting plate 55 that is coupled to the upper joint pin fitting plate 54 by a joint pin 14 fitted to the first fitting portion 541 and the second fitting portion.

The pipe fixing plate 52 includes a rotary joint pin fastening portion 521 and a pipe inserting portion 522, as shown in FIG. The pipe insert 522 may be firmly fixed by being welded to the scaffolding pipe 51 and then welded thereto.

As shown in FIGS. 19 to 21, the guide rails 60-1 and 60-2 are mounted at the ends of the scaffold pipe 61 and the scaffold pipe 61, and both sides of the guide rail 60-1 and abut the inner space 621. The fitting portion 622 is formed obliquely at a predetermined angle so that the wire rope is inserted into the hole, and a hole is formed on the side facing the side on which the scaffold pipe 61 is mounted, and bolt coupling holes 623a are formed on the side where the hole is formed. A wire coupling portion 62 on which the nut 623 is mounted, and a wire inserted into the inner space 621 of the wire coupling portion 62 and fastened to the wire rope by a bolt 64 coupled to the nut 623. And a captive plate 63. Here, reference numeral 65 denotes a snap ring.

22 to 24, the wire fixing part 70 includes a hinge bolt 71, a hook 72, a pin 73, and a rod fixing jig 74.

The hinge bolt 71 is welded and fixed to the welded portion 5 formed in the channel (reference numeral 3 of FIG. 4). The hook 72 includes a hook portion 721 for hooking a wire rope, and a through portion 722 mounted to the hook portion 721 and through which the pin 73 passes. The rod fixing jig 74 includes a coupling groove 741 coupled to the hinge bolt 71, an insertion groove 742 into which the hook 72 is inserted, and a through hole 733 through which the pin 73 passes. do.

25 illustrates a furnace wire scaffolding installation method for a thermal power plant operation according to an embodiment of the present invention.

Step S21O is a step for performing the operation before installation of the in-house wire scaffold. For example, step S21O is installed on the top of the plate superheater tube bundles inside the furnace and the top of the hanger tube bundle (Hanger Tube Bundle) to install the inspection scaffolding and lights on the furnace 10 floor first winch (Winch) and pulley It can be implemented by the step of installing the second winch (Winch) and the pulley on the furnace first floor.

Step S22O is installing the substructure in the slope tube. For example, in step S22O, after installing the lower scaffold at the bottom of the slope tube, a plurality of lower scaffold trusses connecting the two sides of the slope tube are installed, and the plurality of lower scaffolds are fixed firmly between the plurality of lower scaffolds installed diagonally. It can be implemented in the step of assembling the footrest between the truss.

Step S23O is a step of installing the upper beam structure on the plate superheater tube bundles and hanger tube bundles. For example, step S23O is a step of installing an isometric angle on the hanger tube bundle (Hanger Tube Bundle), the step of fixing a plurality of support beams are fastened to the equiangular angle to the shoebel hook and a fixed force computer bolt, and the wire rope By using the auxiliary wire connected to the first winch (Winch) and the pulley can be implemented by the step of transporting to the furnace floor 10 and fastening to the shoe bell hook.

Step S24O is a step of installing an access staircase from the lower scaffold installed under the slope tube to the top of the slope tube. The access staircase is installed in close contact with the slope tube (inclined 55 degrees) from the floor. The lower part shall be fixed between the bottom trusses and the truss by the 3000mm long c steel and then by inserting the bottom of the access stairs into the c steel groove.

Step S25O is a step of forming a plurality of corner scaffold sections in the vertical direction from the top of the slope tube. For example, step S25O is to fit the fitting hole of the first scaffold holder to the first fitting hole of the first coupling member and then to secure the joint pin by inserting the joint pin in the fitting hole of the first scaffold holder and the first fitting hole of the first coupling member. And assembling the safety scaffold and the triangular scaffold to the first scaffold holder and installing the anti-shake scaffolding pipe on the opposite side of the tripod scaffold.

Step S26O is a step of installing a safety scaffolding at the top of the corner scaffolding section, and forming a plurality of front scaffolding sections in a vertical direction from the top of the corner scaffolding section. For example, in step S26O, the safety scaffolding is installed from the top of the corner scaffolding section to the front, and the safety scaffolding of the next compartment at the corner uses a jig for a hook to pull the wire rope of the next compartment to engage the fitting holes of the second scaffold holder. Aligning the first fitting hole of the member, and then fixing the joint pin to the fitting hole of the second footrest holder and the first fitting hole of the second coupling member, assembling a safety footrest to the second footrest holder; When assembling the upper end in the assembly is completed, it is implemented to include a mounting scaffold on both sides of the scaffold holder to install a third scaffold guide and the safety scaffold in the upper end using the footrest.

As another example, step S26O is a step of fitting the fitting hole of the inner wall brace to the second fitting hole of the second coupling member and then fixing the joint pin to the fitting hole of the inner wall brace and the second fitting hole of the second coupling member, And turning the pipe length adjusting nut of the inner wall brace so that the pipe of the inner wall brace supports the wall surface.

Figure 26 illustrates a furnace wire scaffold dismantling method for a thermal power plant operation according to an embodiment of the present invention.

Step S31O is a step for removing the safety scaffold. The step of dismantling the safety scaffolding is to dismantle from the top, and to secure the outside of the furnace by hanging the auxiliary rope on the wire rope, and to lower the safety scaffold and the scaffold holder or the inner wall brace to be disassembled at each step to the lower portion of the slope tube. It is implemented to include. The step of dismantling the safety scaffold is the main work of the release work.

1. When disassembling the safety scaffold and various accessories, it is connected to the flange with pins and can be rotated as in the case of assembly. Therefore, it should not be forcibly dismantled.

2. Vertical clamping and wall struts are also fastened using rotary clamps.

3. Safety steps and other accessories which are dismantled at each stage are lowered by 0.5Ton winches located at 1,2,3,4 corners.

4. The safety scaffold and other accessories that have been dismantled to the bottom shall be transported out of the slope section manhole, sorted by type, and lowered to the floor using a 2Ton hoist installed.

5. In the above work, there is a risk of falling and the part may fall down, so be sure to fasten your seatbelt and fasten the parts so that they do not fall off.

Step S32O is a wire rope dismantling step using a winch and an auxiliary wire to separate the wire rope from the shovel hook and lower it down the slope tube. Step S33O is a step of disassembling the support beam, the conformal angle and the shovel hook installed on the hanger tube bundle. Step S34O is a winch dismantling step. Step S35O is a step of dismantling the inspection scaffold and lamps installed above the plate superheater tube bundles inside the furnace and the top of the hanger tube bundles.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined only by the appended claims.

1: scaffolding
2: wire rope
3: chanel
4: angle
5: weld
10: scaffold guide
11: scaffolding pipe
12: first joint pin fitting plate 121: first fitting portion
13: second joint pin fitting plate 131: second fitting portion
14: joint pin
20: coupling member
21: first scaffolding pipe fixing plate 211: first through portion
212: third fitting portion
22: second scaffolding pipe fixing plate 221: first support groove
222: second through portion 223: second support groove
23: third scaffolding pipe fixing plate 231: third through part
24: Tightening key
25: tightening collar
251: fourth through portion 252: coupling groove
253: fitting hole
30-1, 30-2: crossbar
31: scaffolding pipe
32: upper joint pin fitting plate 321: first fitting hole
33: lower joint pin fitting plate 331: second fitting hole
40: furnace inner wall brace
41: pipe
42: Pipe length adjusting nut
43: support plate
44: scaffolding pipe
45: upper joint pin fitting plate 451: first fitting hole
46: lower joint pin insertion plate 461: second fitting hole
50-1, 50-2: Vertical Vase
51: scaffolding pipe
52: pipe fixing plate 521: rotary joint pin fastening portion
53: rotary joint fixing plate 531 rivet nut
54: upper joint pin fitting plate 541: first fitting portion
55: lower joint pin fitting plate
60-1, 60-2: guide rail
61: scaffolding pipe
62: wire coupling portion 621: internal space
622: fitting
63: wire fastener
623: nut 623a: bolt coupling
64: bolts
70: wire fixing part
71: hinge bolt
72: hook
73: pin
74: rod fixing jig

Claims (6)

a) Install the inspection scaffold and lights on the plate superheater tube bundles inside the furnace and the hanger tube bundles, and install the first winch and pulley on the 10th floor of the furnace. Installing a second winch (Winch) and a pulley on the first floor of the furnace;
b) After installing the lower scaffold at the bottom of the slope tube, install a plurality of lower scaffold trusses connecting the two sides of the slope tube, and firmly fix the plurality of lower scaffold trusses installed diagonally, and then scaffold the plurality of lower scaffold trusses. Assembling by inserting;
c) installing an isometric angle on the hanger tube bundle, and fixing the plurality of support beams to which the shovel hook and the fixing bolt are bolted so as to be spaced apart from each other;
d) transferring a wire rope to the tenth floor of the furnace using an auxiliary wire connected to the first hoist and the pulley and fastening to the shovel hook;
e) installing an access staircase from a lower scaffold installed below the slope tube to an upper portion of the slope tube;
f) forming a plurality of corner scaffold sections in a vertical direction from the top of the slope tube; And
g) installing a safety scaffold at the top of the corner scaffold section, and forming a plurality of front scaffold sections in a vertical direction from the top of the corner scaffold section;
Furnace wire scaffolding installation method comprising a. The method of claim 1, wherein f) forming a plurality of corner scaffold sections in a vertical direction from the top of the slope tube
Aligning the fitting hole of the first scaffold holder with the first fitting hole of the first coupling member and then fixing the joint pin to the fitting hole of the first scaffold holder and the first fitting hole of the first coupling member;
Assembling a safety scaffold and a triangular scaffold to the first scaffold holder; And
Installing an anti-shake scaffolding pipe on the opposite side of the tripod;
Furnace wire scaffolding installation method comprising a. The method of claim 1, wherein g) installing a safety scaffold at the top of the corner scaffold section and forming a plurality of front scaffold sections in a vertical direction from the top of the corner scaffold section
Install the safety scaffolding from the top of the corner scaffolding section to the front, but for the safety scaffolding of the next compartment at the corner, use the hook jig to pull the wire rope of the next compartment to insert the fitting hole of the second scaffold holder into the first fitting hole of the second coupling member. And fitting a joint pin to the fitting hole of the second scaffold holder and the first fitting hole of the second coupling member.
Assembling a safety footrest to the second footrest holder; And
Installing a third scaffold holder and a safety scaffold at the upper end by using the mounting scaffold on both sides of the scaffold holder as a stepping foot when assembling the upper end from the completed assembly;
Furnace wire scaffolding installation method comprising a. The method of claim 3, wherein g) installing a safety scaffold at the top of the corner scaffold section and forming a plurality of front scaffold sections in a vertical direction from the top of the corner scaffold section
Aligning the fitting hole of the inner wall brace with the second fitting hole of the second coupling member and then fixing the joint pin to the fitting hole of the inner wall brace and the second fitting hole of the second coupling member; And
Turning the pipe length adjusting nut of the inner wall brace so that the pipe of the inner wall brace supports the wall surface;
Furnace wire scaffolding installation method further comprising a. An inspection scaffold and lights are installed on the plate superheater tube bundles inside the furnace and a hanger tube bundle, and a first winch and a pulley are installed on the 10th floor of the furnace. The second winch (Winch) and the pulley is installed in the layer, the lower foot plate is installed in the lower portion of the slope tube, a plurality of lower foot truss for connecting both sides of the slope tube is installed, and between the plurality of lower foot truss installed diagonally It is firmly fixed so that the footboard is assembled between the plurality of lower foothold trusses, and an equiangular angle is installed on the hanger tube bundle, and the support beams to which the shovel hook and the fixed force computer bolt are fastened are spaced apart from each other. It is fixed to the conformal angle, and the wire rope is transferred to the 10th floor of the furnace using the auxiliary wire connected to the first winch (Winch) and the pulley. It is fastened and the access stairs are installed from the lower scaffold installed below the slope tube to the upper part of the slope tube, and a plurality of corner scaffold sections are formed in a vertical direction from the top of the slope tube, and a safety scaffold is installed at the top of the corner scaffold section. In the furnace wire scaffold provided with a plurality of front scaffold section in the vertical direction from the top end of the corner scaffold section,
Safety scaffold dismantling step;
A wire rope dismantling step of separating the wire rope from the shovel hook by using a winch and an auxiliary wire to lower the slope tube;
Dismantling the support beam, the conformal angle and the shovel hook installed on the hanger tube bundle;
Winch dismantling step; And
A step of dismantling the inspection scaffold and the lighting lamp installed on the upper part of the plate superheater tube bundle and the hanger tube bundle inside the furnace;
In-house wire scaffold dismantling method comprising a. The method of claim 5, wherein the step of disassembling the safety scaffolding:
Dismantling from the top end, the auxiliary rope to the wire rope to secure the outside of the furnace; And
Lowering the safety scaffold and the scaffold holder or the inner wall brace which are dismantled at each stage to the lower portion of the slope tube using a winch;
In-house wire scaffold dismantling method comprising a.

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