JPH0978827A - Work floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the construction of a scaffolding and reduce construction cost by forming foldably in a hanging state a horizontal work floor for a large structure construction for a coal boiler or the like and delivering the scaffolding from a small opening and making it expandable inside. SOLUTION: When a beam 8 or transformers 9 and 10 are connected to a frame 3 which supports a downward load and they are suspended with a wire 7, it is so arranged that the frame 3 may be bent at a folding fulcrum 12 at the central part of the frame 3, thereby forming a rod-shaped folding frame 4. Then, the rod-shaped frame 4 is carried in from a small opening while a wire 6 is placed on an arm 18 and developed inside, thereby forming the frame 3. This frame 3 is provided with a specified spacing while a floor material is provided thereon, thereby forming a construction work floor. It is so arranged that a large work floor may be set up and removed easily inside a structure having a small opening. This construction makes it possible to cut down construction cost.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a large coal boiler,
The present invention relates to a work floor applied when a powder storage tank or other large structure is constructed.

[0002]

2. Description of the Related Art Conventionally, for example, when constructing a large coal boiler, a skilled worker working at a high place assembles a working floor by laying a steel pipe or wood on the inclined surface of the bottom of the large coal boiler.

[0003]

SUMMARY OF THE INVENTION The conventional work floor as described above has drawbacks such that it is extremely troublesome to assemble and disassemble the work floor, and it is not suitable for recent ultra-large boilers.

[0004]

The work floor according to the present invention is intended to solve the above-mentioned problems, and is formed so that it can be folded and carried into a structure, and is deployed and installed downward in the structure. And a floor material that is folded and formed so that it can be carried into the structure, is expanded in the structure, and is installed on the frame to form a horizontal work floor surface. It is characterized by the configuration. That is, in the work floor according to the present invention, a frame that is folded and formed so that it can be carried into the structure is deployed and installed in the structure to support a downward load and is also folded in the structure. A floor material that can be carried into the structure is unfolded in the structure and installed on the frame to form a horizontal work floor surface. Since the floor material forming the work floor surface is separated and foldable, it is easy to install and remove, and the external shape at the time of loading is small.

[0005]

1 to 4 are explanatory views of a work floor according to an embodiment of the present invention. In the figure, the work floor according to the present embodiment is used for constructing a large coal boiler, a powder storage tank, and other large structures, and a foldable frame as shown in FIGS. 1 and 2. 3 and a foldable floor material 21, etc., and supports the frame 3 and the frame 3 as shown in FIG.
The square trusses 9 and 10 are also formed so as to be foldable, and as shown in FIG. 4, the horizontal work floor surface formed by the floor material 21 is supported by the frame 3, and the floor material 21 and the frame 3 are It is characterized by the separation of.

That is, reference numeral 1 in the drawing is an inclined surface of the furnace bottom,
2 is a beam supporting the inclined surface 1, 3 is a frame that supports the work floor surface, and 4 is a state in which the folded frame is carried in. It is possible to carry in from a narrow boiler manhole under the furnace bottom. Has become. Reference numeral 5 shows a state in which the frame pulled up into the furnace is partially opened when it is installed on the bottom of the furnace. 6 is a wire used to open the folded frame 4, 7 is a wire used for folding, opening and moving the trusses 9 and 10 for supporting the entire frame 3 when retracting or installing, and 8 is a furnace Beams contacting the inclined surface 1 of the bottom, 9 are trusses that support the center of the horizontal portion of the frame 3 by the lower part of the furnace bottom, 10 are trusses that support the 1/4 length portion of the horizontal portions of the frame 3, 11 are trusses 9, It is a connecting member that connects 10 and connects the beam 8. 12 is a folding fulcrum at the center of the horizontal portion of the frame 3, 13 is a folding fulcrum of the beam 8, and 14 is a fixed fulcrum of the truss 9, which are fixed by pins. 17 is a pulley, and the wire 6 connected to the upper end of the truss 10 is a pulley 17
Through the central part. Reference numeral 18 denotes an arm for fixing the wire 6 used when opening the folded frame 4, and this arm 18 is housed in the frame 3 when the wire 6 is not connected. Reference numeral 21 indicates a state in which the foldable flooring material is horizontally opened, and is placed on the frame 3 as it is. 22 is a wire for hanging points at the center of the frame 3, 24 is a wire for suspending both ends of the floor material 21, 25 is a folded floor material, while opening the foldable floor material 21.
Numeral 26 is an arm for opening the folded floor material 25, and its structure is adjusted so that it is not necessary when using a commercially available cloth frame steel scaffold as shown in the figure.

Further, 27 is a pipe for fixing the floor material 21,
28 is a hook to be hung on the pipe 27. The pipe 27 and the hook 28 are not considered to be the foldable floor material 21, and the commercially available cloth frame steel scaffolding can be used for lease and the like. There is. If you arrange the folding frame 3 to the place where the load is large and arrange the folding floor material 21 to the place where the load is small, a work floor that can withstand high load is created, and the space between the frames 3 is narrowed. If the floor material 21 is for high load, a heavy object can be placed on the surface. Reference numeral 19 denotes a central folding fulcrum used for a narrow boiler, which is used for adjustment when the boiler width is different. Fifteen
Is a screw for adjusting when the angle of the inclined surface 1 of the furnace bottom is different, and the pin 13 of the folding fulcrum 13 is pushed to adjust the angle.

In this way, the foldable frame 3 and the foldable floor material 21 are combined to form the foldable frame 3
A foldable floor material 21 is attached to form a working floor,
By separating the frame 3 and the floor material 21, the floor material 2
The commercially available scaffolding can be used for the first item. Further, the frame 3 is folded and carried into the furnace, and the frame 5 is used when hanging.
This is done by pulling up the wire 7 connected to the tip of the. When the wire 6 is spread and set, the wire 6 connected to the arm 18 is pulled up, or the wire 6 is fixed and the wire 7 is lowered. When the wire 7 is lowered, the trusses 9 and 1
It is set to automatically spread to the bottom with a weight such as 0. In addition, a lightweight floor material 21 is provided between the frames 3.
Since the frames 3 are not required to be face-to-face with each other, when a heavy object is placed, the work floor that can withstand a high load is formed by placing it on the frame 3 or by arranging the frames 3 closely. It The size of the boiler can be adjusted by increasing the number of frames 3 in the width direction of the work floor and by attaching or detaching the folding fulcrums 12 in the length direction.

The conventional work floor has drawbacks such that it is extremely troublesome to assemble and dismantle the work floor, and it is not suitable for a recent super-large-scale boiler. However, this work floor has such a problem. As a means for solving the above problem, a frame 3 that supports a vertical load and a floor material 21 that forms a horizontal work floor surface are formed so as to be foldable and separable. When separated, it becomes small and slender when folded, and even the frame 3 for an ultra-large coal boiler can be carried in from a narrow boiler manhole. Further, since the frame 3 and the floor material 21 are separated, it is not necessary to make the surface alignment accurate. Further, it is possible to deal with a place where a high load is applied by arranging the frames 3 densely, and it is possible to adapt to a high load and a light load. In addition, since the floor material 21 forming the work floor surface can also be used as a scaffold material that is commercially available or leased, it is possible to reduce the space of the storage place and the management cost thereof. Further, the force applied in the lateral direction of the frame 3 under a high load is canceled by connecting the adjacent floor materials 21 to each other. Further, since it is possible to adjust the size, angle, etc. by providing a length adjusting part in the central part of the frame 3, the width of the structure to be used can be used for boilers of different sizes. wide. Also,
Floor material 21 that forms the work frame and the frame 3 that receives the load
Since they are separated and made foldable, they can be installed easily and can be applied to a large boiler or the like where the cross-sectional area at the time of folding is small and the carry-in entrance has a size restriction.

[0010]

EFFECTS OF THE INVENTION The work floor according to the present invention is constructed as described above, and is easy to install and remove, so that no labor is required, and the outer shape at the time of loading is small, so that the size of the loading port is limited. It is easy to adapt to large structures that have.

[Brief description of drawings]

FIG. 1 (a) is a sectional view of a work floor according to an embodiment of the present invention, and FIG. 1 (b) is a plan view.

FIG. 2 is a detailed view of a main part thereof.

FIG. 3 is an explanatory diagram of its use.

FIG. 4 is also a use explanatory diagram thereof.

[Explanation of symbols]

 1 Sloping surface of hearth 2 Beam 3 Frame 4 Frame 5 Frame 6 Wire 7 Wire 8 Beam 9 Truss 10 Truss 11 Connecting member 12 Folding fulcrum 13 Folding fulcrum 14 Fixed fulcrum 15 Screw 17 Pulley 18 Arm 19 Folding fulcrum 21 Floor material 22 Material 23 Wire 24 Wire 25 Floor material 26 Arm 27 Pipe 28 Hook

Claims (1)

[Claims] 1. A frame that is folded and formed so that it can be carried into a structure and that is developed and installed in the structure to support a downward load; and a frame that is folded and can be carried into the structure. And a floor material which is deployed in the structure and installed on the frame to form a lateral work floor surface.