JPS62133251A - Moving suspension scaffold - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a mobile suspended scaffold that can be moved along lappets formed on the top of a building.

(b), Prior Art Conventionally, this type of movable suspended scaffolding has used a structure in which the scaffolding is directly supported by the parapet.

(C) 0 Problems to be Solved by the Invention However, in this case, in addition to the vertical load, a bending moment due to the scaffold's own weight acts on the parapet, and in the case of an old building, the parapet must withstand such a bending moment. There was a risk that cracks would occur in the concrete.

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, the present invention aims to provide a mobile suspended scaffolding in which less bending moment is applied to the parapet, and therefore, it can be used safely even in old buildings. .

(d) Means for solving the zero problem, that is, the present invention provides a movable arm (7) on the guide rail (2), and a scaffold (10) that can be raised and lowered at one end of the arm (7). and the arm (7)
A counterweight (6) is provided at the other end.

Note that the numbers in parentheses are for convenience and indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions in the drawings. The following r (el
The same applies to the column ``, action''.

(e) 0 effect With the above-described configuration, the present invention has a counterweight (
6) acts to cancel the bending moment acting on the parapeller 1-(lb) by the scaffold (10).

(f), Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an embodiment of a mobile hanging scaffold according to the present invention.

As shown in FIG. 1, a parapet 1b is formed at the upper end of the building 1 along the outer wall 1a to surround the rooftop IC of the building 1. A guide rail 2 is installed along the outer wall 1a in a direction perpendicular to the plane of the drawing. An arm 7 constituting a movable hanging scaffold 5 is provided on the guide rail 2 so as to be movable in a direction perpendicular to the plane of the paper in the drawing via wheels 7a which are supported on the arm 7 so as to be freely removable. A counterweight 6 is provided at the center right side. The counterweight 6 is movable on a guide rail 3.3 installed parallel to the guide rail 2 in a direction perpendicular to the plane of the paper in the figure via wheels 6a that are movably mounted below the counterweight 6. Arm 7
The left side of is protruding outward from the building 1 beyond the parapet 1b. Further, a scaffold 10 is suspended from the tip of the arm 7 via a wire 9, and the tip of the wire 9 is connected to the scaffold 10.
The wire 9r! is wound around a winch (not shown) built in, and the winch is driven to remove the wire 9r! - By extending and retracting, the scaffold 10 can freely move in the directions of arrows A and B, that is, in the vertical direction. A protective net 1-11 is installed at the left end of the arm 7 in the figure to cover the outer wall 1a and the scaffold 10 from the outside.

Since the movable hanging scaffold 5 etc. have the above configuration, when performing repair work on the outer wall 1a of the building 1 etc. using the movable hanging scaffold 5, the counter weight 6 and the arm 7 are connected to the guide rail 3. .2 in a direction perpendicular to the plane of the paper, and then drive the winch inside the scaffold 10 to retract or let out the wire 9 as appropriate to raise and lower the scaffold 10 in the direction of the arrow A1B. As a result, the scaffold 10 is positioned at an arbitrary working position on the outer wall 1a, but the load acting on the parapet 1b; if the weight of the scaffold 10 is WF, the vertical load WF (wire 9 and arm 7
The dead weight of is ignored here to simplify the explanation.

) to act. However, the bending moment is defined as L I
C=L2XWF...
・(1) Set the weight of counterweight 6 so that:
When A is adjusted, the bending moment around the wheel 7a is canceled out and balanced, and no harmful bending moment acts on the rosette 1b portion. In addition, in reality, scaffolding 10
For stability, the weight WC of the counterweight 6 is (1)
From the formula, 1, 25XLIXWC>L2XWF
...It is preferable to set it to about (2).

(g) 0 Effects of the Invention As explained above, according to the present invention, the arm 7 is movably provided on the guide rail 2, and the scaffold 10 is provided at one end of the arm 7 so as to be movable up and down. Since the counterweight 6 is provided at the other end, the bending moment caused by the weight WF of the scaffolding 10 is prevented from acting on the parapeller 1-1b as much as possible by the counterweight 6. Even when the movable hanging scaffold 5 is provided, it is possible to prevent a bending moment strong enough to destroy the parapet 1b from acting on the parapet 1b, and the parapet 1b can be used with peace of mind.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of a mobile hanging scaffold according to the present invention. 1b... Parapet 2 Guide rail 5 ・Moving hanging scaffold 6 Counterweight 7 ・ Arm 10 Scaffolding

Claims (1)

[Scope of Claims] A movable suspended scaffold that is movably provided via a guide rail installed on a parapet, wherein an arm is movably provided on the guide rail, and the scaffold is movably mounted on one end of the arm. A movable suspended scaffold comprising a counterweight provided at the other end of the arm.