JP2532116B2 - Lifting scaffolding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of use" This invention relates to lifting scaffolds.

"Conventional technology" Outer wall frame scaffolding and single pipe scaffolding, which have been used as mainstream for erection for more than 20 years, secure the scaffolding for work when it is necessary to work at high places, and secure the work. It is constructed for the purpose of carrying out, and with this scaffolding, various works such as rebar assembly, formwork, formwork inspection, concrete placement, wall inspection of the structure, repair etc. are generally done and removed after the work is completed. Target. Therefore, on such a scaffold,
In addition to safety and workability of work, it is desired that assembly and disassembly are easy.

However, the conventional scaffold has the following problems to be solved.

First, in these things, the work floors have to be piled up as the structure rises, so sufficient consideration must be given to strength and collapse prevention, which complicates the structure, There are problems such as dismantling being troublesome. In addition, there is also a problem in that it is not possible to effectively utilize this space by taking up space on the ground surface because it is installed on the ground.

Secondly, at a construction site or the like that requires formworking, it is required to perform various works such as formwork, rebar assembly, concrete placing, etc. by scaffolding, so it is desirable to improve work efficiency. However, in the above-mentioned conventional scaffolding, it is difficult to perform up to the rebar assembly in the previous process in parallel after the concrete is placed, simply by using the formwork and the concrete, and the work efficiency is poor. was there.

As a solution to the above problems, scaffolding of the minimum required height is used to perform the building work while automatically climbing while taking reaction force to the completed building and proceeding the building work while reverse climbing and exterior finishing work. A so-called elevating scaffold that can be proposed is proposed. I) Since the scaffolding area is small, the amount of work for disassembling and assembling the scaffolding is greatly reduced.

ii) Since the assembly and disassembly work is performed on the ground, there is little risk of a fall accident.

iii) Since the scaffolding does not rise from the ground, the external space on the first floor can be effectively used.

iv) Since the formwork panel can be lifted together with the scaffolding, the carpenter does not have to move the formwork material vertically.

v) If the height exceeds 45m, it will be difficult to assemble the scaffold from the ground, but the lifting type scaffold can be used with unlimited body height, and it is a high-rise SR.
It is especially advantageous for C and RC structures.

Etc.

As the above-mentioned proposal, there is JP-A-59-72353.

"Problems to be solved by the invention" However, the conventional scaffolding above is the minimum required height (2F
Since the unit is a rectangular enclosure frame that is rigidly assembled (correspondingly), the burden on the height direction is greatly reduced, but the rectangular enclosure frame does not surround the construction building. It must be connected and arranged in the lateral direction, and a large number of unit bodies must be prepared, which requires time and effort for assembly and disassembly.

Further, the climbing of the rectangular surrounding frame body is not made while taking a reaction force while locking it to the body so as not to separate from the body, because it is made while taking a reaction force to the adjacent unit body. It is lacking in stability from the viewpoint of sticking to the body.

"Means for Solving Problems", "Action" The present invention has been made in view of the above circumstances, and the gist of the present invention is to provide a pair of opposed elevating masts provided with vertical traps on the outer surface between them. Suspended scaffolds with a large number of scaffolding plates mounted at regular intervals on the suspension chain are erected by hanging horizontal trusses by bolts, and the lifting mast is a rope stopper configured as a member disposed on the body side. , A locking hook with a fall prevention cam stopper, a wire or chain with a detachable locking block that is endlessly laid between the upper sheave and lower electric winch that are assembled to the sliding stopper , A guide rail made of I-shaped steel,
By providing a locking block that can move back and forth, and furthermore, the relationship between the horizontal truss and the lifting mast can be vertically slidably attached to the vertical guide pole that is installed on the lifting mast side. In addition, at least one end of the horizontal truss can be fixed to the endless rope, and a wire is stretched between the upper and lower ends of the opposing lifting mast via sheaves provided at both ends of the lower side of the horizontal truss. The smooth lifting and lowering mechanism of the horizontal truss with one-sided support is installed to facilitate the assembly and disassembly of the unit, the stability during climbing, and the further assembly of the unit. The point is that the dismantling has been speeded up.

"Example" Hereinafter, this will be described in detail with reference to the drawings.

FIG. 1 is an overall front view of a lifting scaffolding unit of the present invention, FIG.
a and b are the front and side views of the lifting mast, which is the main part, and FIG.
d is a detailed view of each component in FIG. 2 as viewed in the direction of arrows a to d, and e to g of FIG. 4 are explanatory views showing the mode of use of the lifting scaffold of the present invention. FIGS. 5a to 5e are explanatory views of a climbing procedure of the lifting scaffold of the present invention, and FIGS. 6a and 6b are explanatory views showing additional components in the development type of the present invention.

In FIG. 1, reference numerals 1 and 1 in the drawing denote a pair of opposed lifting masts, on the outer surfaces of which vertical trumpets 2 and 2 are provided, and a horizontal truss 3 is attached and detached between the upper ends of the masts 1 and 1. It is erected with simple bolts to form a portal frame.

On the lower side of the horizontal truss 3, suspension scaffolds 6 each having a plurality of scaffold plates 5 mounted on the suspension chains 4 at regular intervals are suspended.

Thus, a unit body of a gate-type frame structure having a suspension scaffolding inside is constructed, and a scaffolding surrounding a building to be constructed is formed by connecting a number of adjoining laterally as needed.

In the above-mentioned unit, the scaffold is assembled and disassembled only by attaching and detaching the horizontal truss 3.

As is clear from the above, in the above-mentioned unit body, the horizontal truss 3 has the significance of connecting the left and right masts 1 and 1 to form a stable frame, and also serves as a suspension base for easily attaching and detaching the suspension scaffold 6. It has significance.

The masts 1, 1 are subject to independent self-supporting (independent climbing), and although the illustrated mode is for ground installation, they are reinforced by the self-supporting bracket 7 and stay brackets 8.

In the figure, 9 ... Show handrails.

FIG. 2 shows the mast 1 in a mode in which the scaffold is separated from the ground, and FIG. 3 shows each component in detail.

In the figure, 10 is a vertical guide rail made of I-shaped steel on the back of the mast 1, 11 is an electric winch fixed to the lower end of the mast, 12 is a sheave arranged at the upper end of the mast, and between the electric winch 11 and the sheave 12. A rope 13 made of a wire or a chain is endlessly bridged over.

In the figure, 14 is an intervening sheave arranged in front of the electric winch 11.

In the figure, reference numeral 15 is a member that is attached to anchors 17 that are embedded at a predetermined interval in advance when constructing the skeleton 16. The bracket 18 has a lower portion pivoted 19 to stand upright, and the front end can be tilted forward. Groove 20
A rope stopper 21 having a hook, a locking hook 22 provided with a fall prevention cam stopper 27 that locks the guide rail 10 from both sides, a lower portion of the bracket 23 that is pivoted 24 at the bottom, and a sliding stopper 25 that can stand upright and tilt forward. Etc. are provided.

Locking block 26 acting on the sliding stopper 25
Is arranged at the lower end of the mast 1 so that it can be moved back and forth. The guide rail 10 is locked to the locking hook 22, and the locking block 26 is locked to the sliding stopper 25 of the mast 1 which is stuck to the skeleton 16. This prevents the descent.

To change from the above-mentioned descent prevention state, see Fig. 3e.
As shown in FIG. 3, if the detachable locking block 28 is attached to the cord 13 and the cord is locked to the cord stopper 21 and the cord 13 is wound by the electric winch 11, the mast 1 rises and if it is rewound. Move down (unlock the slide stopper 25 when descending).

Then, as shown in Fig. 4, the unit body constructed as described above constructs the skeleton 16 in the state of being installed on the ground (Fig. A), and then the reaction force is applied to the completed skeleton 16 to climb up. (Figure b), the same process can be repeated thereafter.

Incidentally, 36 in the figure indicates a curing net.

The above-mentioned stroke is described in detail in FIG.

After the 3F frame is completed, replace member 15B with 15A. (A) Member
15C is replaced by 15D, the cord 13 is locked to the cord stopper 21, and the electric winch 11 is wound up to raise it. (B) After the climb is completed, the slide stopper 25 is operated to support the scaffolding and the 4th floor is built. (C) Under construction on the 4th floor. (D) After the skeleton is completed, the work of (a) is repeated. (E) Then, in the scaffold of the present invention having the above-mentioned configuration, each mast 1 having high self-supporting property is always attached to the body surface, so that the stability is extremely high.

FIG. 6 shows a structure in which assembling and disassembling of the suspension scaffold 6 by attaching and detaching the horizontal truss 3 described above can be achieved without the need to bring in a lifting machine, and further convenience is achieved. The suspension scaffold 6 is omitted in the figure. That is, as shown in FIG. A, a pair of nipping rollers 30 having a V-shaped cross section attached to the corners of the horizontal truss 3 are assembled to the vertical guide poles 29 existing as vertical frames at the corners of the lifting mast 1. As shown in Fig. B, at least one end of the horizontal truss 3 can be attached to the rope 13 so that the horizontal truss 3 can be moved up and down by operating the electric winch 11. Further, wire 33 laid between the upper and lower ends of the opposing lifting masts 1,1 via take-out beams 31,32 and the like is stretched through sheaves 34,35 arranged at both lower ends of the horizontal truss 3. ,
This ensures a balanced movement of the sliding joints at both ends of the horizontal truss 3.

Therefore, the power of the electric winch 11 owned by the mast 1 can be used to raise and lower the horizontal truss 3, that is, to assemble and disassemble the suspension scaffold 6 easily and quickly.

[Advantages of the Invention] As described above, according to the present invention, stability during climbing of scaffolding is enhanced and safety is achieved, and work of assembling / disassembling is significantly simplified and speeded up, which is extremely preferable.

[Brief description of drawings]

Fig. 1 is an overall front view of the lifting scaffolding unit of the present invention, Fig. 2a,
b is a front and side view of the lifting mast, which is a main part, and FIGS.
2A to 2D in FIG. 2, e to g in FIG. 2 are detailed views of respective constituent parts in FIG. 4C, and FIGS. 4A and 4B are explanatory views showing a usage mode of the lifting scaffold of the present invention. 5 (a) to 5 (e) are explanatory views of a climbing procedure of the lifting scaffold of the present invention, and FIGS. 6 (a) and 6 (b) are explanatory views showing additional components in the development type of the present invention. 1 ... Opposite lifting mast, 2 ... Vertical turret, 3 ... Horizontal truss, 4 ... Suspended chain, 5 ... Scaffold board, 6 ... Suspended scaffold, 7 ...
Bracket for self-standing, 8 ... Stay metal fittings, 9 ... Handrail, 10 ... Guide rail, 11 ... Electric winch, 12 ... Sheave, 13 ... Rope, 14 ... Interposed sheave, 15 ... Member, 16 ... Body, 17 ... Anchor, 18 ... Bracket, 19 ... Pivot stop, 20 ... U groove, 21 ... Rope stopper, 22 ... Locking hook, 23 ... Bracket, 24 ... Pivot stop, 25 ... Sliding stopper, 26 ... Locking block, 27 ... Fall prevention Cam stopper, 28 ... Locking block, 29 ... Vertical guide pole, 30 ... Nip roller, 31, 32 ... Take-out beam, 3
3 ... Wire, 34, 35 ... Sheave, 36 ... Curing net.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Tsubota 8-21-1, Ginza, Chuo-ku, Tokyo Inside the Takenaka Corporation Tokyo main store (72) Inventor Hideo Ikuta 15 Shinohara Nishimachi, Kohoku-ku, Yokohama-shi, Kanagawa 38 (72) Inventor Koji Inomata 6-17-4 Sodegaura, Narashino-shi, Chiba (56) References JP-A-63-110365 (JP, A) Actual development 62-31119 (JP, U) Actual development 62- 60620 (JP, U) Actual public 53-10108 (JP, Y2) Actual public 64-4779 (JP, Y2)

Claims (2)

(57) [Claims] 1. A horizontal truss for suspending a hanging scaffold, in which a large number of scaffolding plates are mounted at regular intervals on a hanging chain between a pair of opposed elevating masts having a vertical ramp provided on the outer surface by bolting. It is installed on the lifting mast, and it is endlessly mounted between the upper and lower sheaves and the lower end electric winch that is attached to the rope stopper, the locking hook with the fall prevention cam stopper, and the sliding stopper, which are the members arranged on the body side. An elevating scaffolding characterized by being provided with a rope made of a wire or chain having a detachable locking block passed over, a guide rail made of I-shaped steel, and a locking block capable of advancing and retracting. 2. A horizontal truss for suspending a suspended scaffold, which is a suspension chain having a large number of scaffolding plates mounted at regular intervals on a suspension chain between upper ends of a pair of opposing lifting masts provided with a vertical ramp on the outer surface by bolting. It is installed on the lifting mast, and it is endlessly mounted between the upper and lower sheaves and the lower end electric winch that is attached to the rope stopper, the locking hook with the fall prevention cam stopper, and the sliding stopper, which are the members arranged on the body side. Equipped with a rope made of wire or a chain with a detachable locking block passed over, a guide rail made of I-shaped steel, and a locking block that can move back and forth, the horizontal truss can be raised and lowered with respect to the mast. A vertical guide pole arranged on the mast side is fitted with a nipping roller that is carried out from the side of the horizontal truss to make it vertically slidable and at least one end of the horizontal truss. A smooth horizontal truss that can be fastened to an endless rope and that has wires supported between the upper and lower ends of the opposing lifting mast via sheaves arranged at both ends of the horizontal truss to support one end. Lifting scaffolding characterized by being equipped with a lifting mechanism.