JPH035567A - Temporary installation method for working suspension scaffold - Google Patents

Abstract

PURPOSE:To increase the efficiency of a temporary installing work by a method wherein a wire for a suspension scaffold is suspended along the side of a structure, a gondola for a work is elevatably and traversably mounted, and a scaffold plate is suspended to a given position by means of the gondola and is secured to a wire. CONSTITUTION:Suspension wires 2 for securing a suspension scaffold 12 are suspended from the upper part of a structure along the side of the structure with a given distance therebetween. A gondola 4a being elevatable and traversable along the side of the structure is mounted. A suspension member 13 and coupling metals 2a and 2b are mounted to the scaffold plate 2. The scaffold plate 2 is hoisted up to a given position by the gondola 4a, and the suspension wire 12 is secured by means of a cable lock device 19. Lateral coupling of the scaffold plate 2 is effected by means of the metals 2a and 2b. This constitution improves the efficiency of a scaffold temporary installing work.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an improvement in a method for temporarily constructing a suspended scaffold for work, and involves moving the suspended scaffold using a work cage such as a gondola that can move horizontally as well as vertically. However, it can be fixed to a cable such as a wire rope suspended from a structure.

[Conventional technology]

When working on the side of a structure such as a building, ship, power station, tank, chimney, bridge, etc., be sure to close the side of the structure to prevent objects from falling during the work and to prevent debris from scattering. It is being covered with protective nets, etc.

To install this protection net, wire ropes are hung from the roof of the structure, the protection net is attached to the wire ropes, and scaffolding is suspended from the wire ropes in order to secure space for passages etc. on the ground part of the structure. It is often suspended and fixed to a structure, and temporary scaffolding is installed to serve as the bottom of the curing net.

The temporary construction of such suspended scaffolds involves connecting multiple suspended scaffolds on the ground according to the width of the side of the structure, installing hoisting machines at regular intervals between the connected suspended scaffolds, and then A wire rope with a protective net attached to it is wrapped around the upper machine to lift the suspended scaffold to a predetermined height.

Work is carried out using gondolas and other equipment in a space surrounded by such protective nets and hanging scaffolding.

[Problem to be solved by the invention]

This temporary construction method for suspended scaffolding requires four hoisting machines at regular intervals to lift the suspended scaffolding. It is not possible to temporarily install the hoist, and furthermore, after installation, the hoist is in a restricted state where it cannot be used for other purposes, so there is a problem in that the cost required for temporary installation increases.

In addition, since many hoisting machines are used, in order to keep the suspended scaffolding horizontal, it is necessary to adjust the hoisting amount of each hoisting machine, which becomes complicated and requires the power etc. to be supplied to each hoisting machine. The problem is that you have to do it.

In addition, during the temporary construction of the suspended scaffolding, some work must be done on the floorboards, which poses safety issues, and even after temporary construction, the numerous hoisting machines on the suspended scaffolding become a hindrance to the work. .

Furthermore, there is the problem that the area required to assemble the suspended scaffold on the ground is large, and there is also the problem that it takes many workers and a considerable amount of time to complete the temporary construction.

It is also desired to develop a suspended scaffold for work that can protect only the parts necessary for work.

This invention was made in view of such prior art,
To provide a temporary construction method for a suspended scaffold for work, which can efficiently temporarily construct a suspended scaffold in a short time without requiring a hoisting machine mounted on the suspended scaffold itself.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a method for temporarily constructing a suspended scaffold for work, in which a work cage is provided that can be moved up and down and laterally along the side of the structure, and ropes for the suspended scaffold are suspended from the top of the structure. After being lowered, the suspended scaffold on the ground is lifted up by the work cage, moved to a predetermined installation position, and the suspended scaffold is fixed to the cable, which are repeated.

Further, the method for temporarily constructing a suspended scaffold for work according to the present invention is characterized in that a lifting device for the suspended scaffold is mounted on the work cage.

Further, in the temporary construction method of a suspended scaffold for work according to the present invention, a hoisting hook that can be stored is provided in either one of the work cage or the suspended scaffold, and a locking catch is provided in either one of the cages for lifting the scaffold. It is characterized by the following.

Further, the method for temporarily constructing a suspended scaffold for work according to the present invention is characterized in that the suspended scaffold is fixed to the cable using a cable locking device.

Further, the method for temporarily constructing a suspended scaffold for work according to the present invention is characterized in that a plurality of the above-mentioned suspended scaffolds on the ground are connected, and after making them into a rigid body with a horizontal holding member, they are hoisted by the above-mentioned cage for work. It is something to do.

Further, in the temporary construction method of a suspended scaffold for work according to the present invention, a work cage that can be raised and lowered and moved laterally along the side of the structure is provided, and ropes for the suspended scaffold that can be moved laterally are hung from the upper part of the structure. After lowering, the suspended scaffold on the ground is lifted up by the work cage and fixed to the cable, and the suspended scaffold is movably installed on a lateral movement rail installed on the side of the structure. It is something.

[For production]

According to this method of temporarily installing a suspended scaffold for work, a work cage such as a gondola that can go up and down and move laterally is provided along the side of the structure, and the suspended scaffold on the ground is hoisted up by this work cage to a predetermined position. The suspended scaffold is temporarily constructed by repeatedly moving it to a certain position and fixing it to a pre-suspended rope at a predetermined position, and instead of installing a hoist on the suspended scaffold, a work cage is used. This allows for easy temporary installation.

Furthermore, the lifting device is attached to the work cage to further facilitate temporary construction work.

Furthermore, either a lifting hook or a locking catch is provided on each of the work cage and the lifting scaffold, so that lifting from the ground can be easily performed without requiring special operations.

In addition, when the suspended scaffold that has been lifted to a predetermined position is transferred to and fixed on the cables, a cable locking device is used so that the scaffolding can be easily fixed.

Furthermore, the suspended scaffolds in the connected state are made rigid using horizontal holding members, and the suspended scaffolds can be lifted even in the connected state, thereby improving the efficiency of temporary construction work.

In addition, the hanging scaffold suspended from horizontally movable cables is movably installed on the horizontally movable rail, so that it can be moved together with the work cage and only the necessary parts can be covered.

〔Example〕

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

FIG. 1 is a process diagram of an embodiment of a method for temporarily constructing a suspended scaffold for work according to the present invention.

The temporary construction target of this temporary construction method of suspended scaffolding for work is, for example, the 7th
Hanging scaffolding 16 provided at the bottom of the curing net 1 shown in the figure
For temporary construction, a work cage 4 is used to perform work on the side surface of the structure 3. For example, the first
As shown in Figure (a), temporary construction work is performed using two gondolas 4a and 4b.

(1) First, the following work will be carried out in preparation for the temporary construction work.

As shown in FIG. 1(a), the gondolas 4a and 4b serving as the work cages 4 can not only be lifted up and down (as shown in FIG. things are used.

For this purpose, a temporary traversing device 5 is installed, and as shown in FIG. The rail support base 6 is clamped and fixed to a parapet 3a formed on the upper edge of the rooftop of
is rotatably and fixedly mounted.

The base end of a rail support part 6a that protrudes in the horizontal direction is attached to this rail support base 6 so as to be rotatable around a vertical axis, and a temporary horizontal support part is attached to the top surface of the top end of the rail support part 6a via a reinforcing plate. A rail 8 is placed.

Then, by inserting a connecting pin into a mounting hole formed vertically through the reinforcing plate, the temporary transverse rail 8 is mounted so as to be rotatable.

This temporary transverse rail 8 has a square C-shaped cross section and is made of lip groove shaped steel or the like.

Such a temporary transverse rail 8 is connected and supported via a support frame 7 and a rail support stand 6 that are attached to the rosette 3a of the building 3 at regular intervals corresponding to its length, and is supported over a necessary running range (e.g. However, when performing temporary work, all assembly is done inside the bulkhead 3a of the building 3, and the rail support stand 6 and rail support part 6a are moved outside the building 3. It can be installed so that it comes out, and it can be installed safely.

The two sets of traversing trolleys 9 that run along such temporary traversing rails 8 are each composed of two trolleys, a driven trolley 9a and a driving trolley 9b, and are connected by a connecting rod 9C and run as one. Hooks 9d for hanging the gondolas 4a and 4b are attached to the driven trolley 9a and the driving trolley 9b.

A gondola hanging wire 10 is attached to the two hooks 9d of this traveling trolley 9, and the work gondola 4a,
Gondola 4a,
The gondolas 4a and 4b are
It is designed to be raised and lowered.

Therefore, two sets of respective gondolas 4a.

4b can be moved in the left-right direction by traveling by the traversing trolley 9, and can also be moved in the vertical direction by winding and rewinding by the winder 11.

Furthermore, hanging wires 12 as cables for supporting the hanging scaffold 2 are suspended from the tip and base ends of the support frame 7 attached at regular intervals to the rose pet 3a portion of the building 3.

(2) After the preparations are completed in this way, the temporary installation work of the suspended scaffolding 16 using the two transverse gondolas 4a and 4b is carried out as follows.

■ Arrange the floorboards 2 to be temporarily installed on the above-ground part of the building 3 where the suspended scaffolding will be temporarily installed, and connect a predetermined number of them.

To connect the floorboards 2, it is preferable to provide a connecting hook 2a and a connecting catch 2b, as shown in FIG. To facilitate this, the connecting hook 2a and the connecting catch 2b are provided at least at both ends of the suspended scaffold 16 in the connected state.

Furthermore, when the suspended scaffolding 16 is lifted up in the connected state, the suspended scaffolding 16 is bent from the connecting part, so as shown in FIG.
3 and two diagonal members 14 to hold it rigidly.

Furthermore, accessories such as handrails 15 are attached to each floorboard 2 in advance.

(2) When one unit of suspended scaffolding 16 is assembled in this way, the two gondolas 4a and 4b are lowered to lift up this suspended scaffolding 16.

In this case, the suspension scaffolding 16 is lifted by the gondolas 4a and 4.
As shown in FIG. 3, a foldable lifting arm 17 is attached to the side of b as a lifting device, and the lifting protrusion 18 formed at the upper end of the hanging member 13 is scooped up from below. lift. , (2) Once one unit of the suspended scaffold 16 has been lifted to a predetermined position, it is fixed to the hanging wire 12 for the suspended scaffold, as shown in FIG. 1(a).

For fixing to this hanging wire 12, as shown in FIG.
A cable locking device 19 attached to the upper end of the hanging member 13 is used.

This cable lock device 19 has a support body 19a that is disassembled and connected into two left and right parts, and a fixing member 19b is attached to one side of the support body 19a.
On the other side, a moving member 19d is attached to which the moving member 19d is moved by operating the handle 19c to clamp and tighten the hanging wire 12.

Therefore, when the suspended scaffold 16 is lifted to a predetermined position, the support body 19a of the cable locking device 19 is divided, the hanging wire 12 is passed between them, and the support bodies 19a are connected and the handle 19c is operated to fix the suspension. It can be fixed to the hanging wire 12 by sandwiching it between the member 19b and the moving member 19d.

Note that a governor mechanism may be incorporated into the cable locking device 19 to ensure a strong locked state in the event that the cable falls along the hanging wire 12.

Then, after fixing the gondolas 4a and 4b to the hanging wire 12 within reach using the cable locking device 19, each gondola 4a and 4b is moved laterally and the remaining hanging wire 12 is secured to the gondola 4a and 4b. Fix to.

■ After this, the turnbuckles of the diagonal members 14 are removed and the horizontality of the suspended scaffolding 16 is corrected using the hanging members 13, completing the temporary installation of the suspended scaffolding 16 of the first unit (see Figure 1 (b)) .

■ In parallel with fixing the suspended scaffolding 16 of the first unit to the hanging wire 12, or after the fixing is completed, connect the suspended scaffolding 16 of the second unit to be connected to the first suspended scaffolding 16 on the ground. , a hanging member 13 and two diagonal members 14 are used to form a rigid body.

(2) Thereafter, the two gondolas 4a and 4b are moved laterally and then lowered to lift the suspended scaffold 16 on the ground, which is the second unit.

■ After hoisting it to a predetermined position and fixing it to the hanging wire 12 with the cable locking device 19, the hanging scaffold 16 of the first unit and the hanging scaffold 16 of the second unit are connected to the connecting hook 2.
a and connection catch 2b to connect them (first
(See figure (c)).

(2) Assembling the suspended scaffold 16 on the ground, hoisting it up using the gondolas 4a and 4b, and fixing it to the hanging wire 12 are repeated in sequence to complete the temporary construction of the suspended scaffold 16 of a predetermined width.

(2) After the suspended scaffold 16 for work is temporarily installed in this way, the curing net 1 is stretched from the loose bed 3a of the structure 3 to the suspended scaffold 16 so as to cover the entire working wall surface of the structure 3.

According to such a temporary construction method of suspended scaffolding for work, suspended scaffolding 1
The suspended scaffolding 16 can be temporarily installed without installing a hoisting machine for lifting and lowering the scaffold 16, there is no need to secure electricity or wire, and the workability is good and costs can be reduced.
A wide working space can be secured on the suspended scaffold 16.

In addition, since the suspended scaffolds 16 are connected to each other by the connecting hooks 2a and the connecting catches 2b, there is no need to stand on the suspended scaffolds 16 during temporary construction work, and the work is highly safe. Since it can be fixed to the hanging wire 12 with the cable locking device 19, it can be temporarily installed in a short time.

Furthermore, even if a plurality of hanging scaffolds 16 are hung in a connected state, the hanging members 13 and the diagonal members 14 can form a rigid body, so that the hanging scaffolds 16 can be lifted safely and easily.

In the above embodiment, the suspended scaffolding 16 is connected to the gondolas 4a, 4.
b to raise it and fix it to the hanging wire 12, but
It is also possible to assemble the suspended scaffold 16 on the ground in the same place, and after lifting it with the gondolas 4a and 4b, move it laterally to a predetermined position and fix it to the hanging wire 12, which saves work space on the ground. Suitable when it is difficult to secure.

Moreover, if the diagonal members 14 on the side of the building 3 are removed after being fixed to the hanging wire 12, the workability on the side will not be impaired.

Next, another embodiment of the method for temporarily constructing a suspended scaffold for work will be described with reference to FIGS. 5 and 6.

In these embodiments, the ground floor plate 2 is used as the gondola 4a+4b
A retractable lifting hook 2o and a locking catch 21 are used.

As shown in FIG. 5, for example, this retractable lifting hook 20 is rotatably provided with its base end 20a being pivotally supported on both sides of the lower part of the gondolas 4a and 4b. It can be stored on the side, and can be locked in a downwardly protruding position using a ball plunger 20b.

The intermediate portions of the lifting hooks 2o are pivotally supported so as to be rotatable in a direction perpendicular to the storage direction, and each is urged to close inward by a spring 20c.

On the other hand, as shown in FIG. 5(a), the locking catches 21 are attached to both sides of the floorboard 2, are in an inverted shape, and have an upper partition cut out diagonally. .

Therefore, when the lifting hook 2o is placed over the locking catch 21 of the floorboard 2 in a protruding state, the lifting hook 2o expands against the spring 20c and then closes. The lifting hook 20 is in a locked state.

After lifting the gondola 4 in this manner, it is fixed to the hanging wire 12 at a predetermined position using the cable locking device 19, and then the gondola 4
A and 4b are lowered and the lifting hook 20 is removed from the locking catch 21 repeatedly to temporarily construct the hanging scaffold 6.

By temporarily erecting the suspended scaffold in this way, the work can be carried out easily.

Note that the mounting positions of the lifting hook 20 and the locking catch 21 are reversed as shown in FIG. A hook 20 may also be attached.

Next, another embodiment of the present invention will be described with reference to FIGS. 8 and 9.

In this embodiment, the suspended scaffold 16 for temporary work can be moved laterally in accordance with the lateral movement of the gondola (in the illustrated example, one gondola is used) 4a serving as the work cage 4. In this way, as shown in FIG. 8, only the necessary part of the entire lifting range of the gondola 4a or the part below the gondola 4a is covered with the covering net 1.

(1) For this reason, in preparation for the temporary construction of suspended scaffolding 16,
As shown in the figure, there are four traversing trolleys 9 attached to a temporary traversing rail 8 temporarily installed on the top of the structure 3, three driven trolleys 9a and one driving trolley 9b. Each is connected by a connecting rod 9C.

On the other hand, the lower temporary transverse rail 2 is located slightly below the lowermost position of the gondola 4a, corresponding to the position where the suspended scaffolding 16 is temporarily installed.
2 is tentatively established.

Like the upper temporary transverse rail 8, this lower temporary transverse rail 22 is made of lip groove steel or the like with a C-shaped square cross section, and is attached directly to the work wall using anchors 23. It will be done. The lower temporary traverse rail 22 is installed from inside the gondola 4a after the gondola 4a is ready for use, so that it is temporarily installed parallel to and approximately the same length as the temporary traverse rail 8.

The upper ends of the hanging wires 12 for suspending the suspended scaffolding 16 are fixed to the two outer driven trolleys 9a, respectively, so that they can be moved laterally.

(2) Hanging scaffolding 16 to be carried out after such preparations are completed
The hypothesis is made as follows.

■ One or more floorboards 2 to be temporarily installed are arranged on the ground part of the building 3 so that the width thereof is wider than that of the gondola 4a, and the floorboards 2 are connected as necessary.

Rollers 24 mounted on the lower transverse rail 22 are attached to both sides of the floorboard 2 on the building 3 side.

Note that this roller 24 may be provided with a drive device capable of running and driving in synchronization with the upper traversing trolley 9.

In addition, to the floorboard 2, a hanging member 13 with a turnbuckle whose length can be adjusted and is necessary for lifting, a diagonal member 14 is attached if necessary, and accessories such as a handrail 15 are attached in advance.

(2) Once the suspended scaffolding 16 is assembled in this way, the gondola 4a is lowered to lift up the suspended scaffolding 16.

In this case, the suspended scaffold 16 is lifted by using the foldable lifting arm 17 as a lifting device attached to the side of the gondola 4a described in FIG. 3, for example, and scooping it up from below. Note that the lifting hook 20 and the locking catch 21 described in FIGS. 5 and 6 may be used for lifting.

■ After hoisting the suspended scaffold 16 to the predetermined position,
A rope locking device 19 attached to the upper end of the hanging member 13 is used to fix the hanging wire 12 for the hanging scaffold suspended from the driven trolley 9a, and then the hanging member 13 is fixed.
Correct the horizontality of the suspended scaffolding 16 with the turnbuckle.

(2) Next, the rollers 24 on both sides of the floorboard 2 are attached to the lower temporary transverse rails 22, and the temporary installation of the movable suspended scaffolding 16 is completed.

■ After the horizontally movable hanging scaffold 16 for work is temporarily installed, as shown in Fig. 8, the curing net 1 is stretched,
As shown in FIG. 9, a curing net 1 is stretched to cover a portion of the wall surface necessary for the work.

Therefore, according to the suspension scaffold for work temporarily constructed in this way, as shown in FIG. Make it move in sync with the movement,
You can work while always protecting the work area.

Further, since the portion necessary for gondola work can be covered to the minimum extent possible, the influence on the building 1 etc. in use can be minimized.

According to such a method of temporarily installing a suspended scaffold for work, the suspended scaffold can be temporarily installed in accordance with the width of the gondola, and the temporary construction work can be performed more efficiently.

In addition, in the above embodiment, the case where the work cage is constituted by a gondola has been explained, but it is not limited to gondolas, but can also be widely applied to those in which the elevating mechanism is mounted on the gondola itself, or mounted on the ground part such as a traversing trolley. It is possible.

In addition, the target of work is not limited to buildings, but also ships and power plants.

It can be widely applied to the walls of structures such as tanks, chimneys, and bridges.

Furthermore, it goes without saying that the constituent elements may be changed without changing the gist of the invention.

〔Effect of the invention〕

As described above in detail with the embodiments, according to the temporary construction method of a suspended scaffold for work according to the present invention, a work cage such as a gondola that can move up and down and move laterally along the side of the structure is provided, This work cage was used to lift a suspended scaffold on the ground, move it to a predetermined position, and then repeatedly fix it to a pre-suspended cable at a predetermined position to temporarily construct a suspended scaffold. It can be easily temporarily installed using a work cage without installing a hoist.

Furthermore, according to this temporary construction method for suspended scaffolding for work, it is possible to temporarily construct a suspended scaffold without installing a lifting machine on the suspended scaffold, so there is no need to secure electricity or wiring, making work easier. It is possible to reduce costs, and
A wide working space can be secured on the suspended scaffold.

Further, by attaching the lifting device to the work cage, temporary construction work can be made even easier.

Furthermore, either a lifting hook or a locking catch is provided on each of the work cage and the floorboard, making it easy to perform temporary lifting work from the ground without the need for special operations. .

In addition, a cable locking device is used when transferring and fixing the suspended scaffold that has been lifted to a predetermined position onto the cable, so that the scaffold can be easily fixed.

Furthermore, the suspended scaffolding in the connected state is made into a rigid body using a horizontal holding member, so that the suspended scaffolding can be lifted even in the connected state, and the efficiency of temporary construction work can be improved.

In addition, since the suspended scaffold suspended from horizontally movable cables is movably installed on the horizontally movable rail, it can be moved together with the work cage and only the necessary portions can be covered.

[Brief explanation of drawings]

The drawings show a method for temporarily constructing a suspended scaffold for work according to the present invention, FIG. 1 is a process diagram of an embodiment of the method for temporarily constructing a suspended scaffold for work according to the present invention, and FIGS. 2 and 3 show a cage for work. 4 is a sectional view of the rope locking device, FIGS. 5 and 6 are explanatory diagrams of other embodiments of the lifting device for the suspended scaffold, and FIG. 7 is the completed temporary installation. It is an explanatory diagram of a state. FIG. 8 and FIG. 9 are explanatory diagrams of a completed state of temporary construction when a suspended scaffold according to another embodiment of the temporary construction method of a suspended scaffold for work according to the present invention is made horizontally movable. DESCRIPTION OF SYMBOLS 1...Curing net, 2...Floor board, 2a...Connection hook, 2b...Connection catch, 3...Structure,
3a...parapet, 4...work cage, 4a,
4b...Gondola, 5...Temporary traverse device, 6...
Rail support stand, 7... Support frame, 8... Temporary traversing rail, 9... Traversing trolley 9a... Driven trolley,
9b... Drive trolley 9c... Connection rod, 9d...
...Hook, 10...Gondola hanging wire, 11...
- Winding machine, 12... Hanging wire, 13... Hanging member, 1
4... Diagonal material, 15... Handrail, 16... Hanging scaffold, 1
7... Lifting arm, 18... Lifting protrusion, 19...
Cable lock device, 19a... Support body, 19b... Fixed member, 19c... Handle, 19d... Moving member, 20... Lifting hook, 20a... Base end portion, 2
0b...Ball plunger, 20c...Spring, 21
... Locking catch, 22 ... Lower temporary transverse rail, 23 ... Anchor 24 ... Roller.

Claims (6)

[Claims] (1) A work cage that can be raised, lowered, and moved laterally along the side of the structure is provided, and after suspending the rope for the suspended scaffold from the top of the structure, the suspended scaffold on the ground is hoisted with the work cage. 1. A method for temporarily constructing a suspended scaffold for work, comprising repeatedly moving the suspended scaffold to a predetermined installation position and fixing the suspended scaffold to the cable. (2) The method for temporarily constructing a suspended scaffold for work according to claim 1, characterized in that a lifting device for the suspended scaffold is mounted on the cage for work. (3) A retractable lifting hook is provided on one of the work cage and the hanging scaffold, and a locking catch is provided on the other for lifting. How to temporarily set up scaffolding for work. (4) The method for temporarily constructing a suspended scaffold for work according to any one of claims 1 to 3, wherein the suspended scaffold is fixed to the cable using a cable locking device. (5) A plurality of the suspended scaffolds on the ground are connected together, made into a rigid body by a horizontal holding member, and then lifted by the work cage. A temporary construction method for suspended scaffolding for work. (6) A work cage that can be moved up and down and horizontally along the side of the structure is provided, and after suspending ropes for a suspended scaffold that can be moved laterally from the top of the structure, the work cage is used to A method for temporarily constructing a suspended scaffold for work, characterized in that the suspended scaffold is hoisted and fixed to the cables, and the suspended scaffold is movably installed on a lateral movement rail installed on the side of a structure.