JPH0448277Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to a work scaffold mainly suitable for construction work, and particularly to a work scaffold that can be used safely and conveniently on sloped surfaces such as roof surfaces. Regarding scaffolding.

Conventional technology For example, when carrying out construction work on the underside of the eaves of the large roof of a two-story house or on the walls of the second floor, it is necessary to erect scaffolding on the sloping roof surface of the first floor. Depending on the type of construction work, sheet metal work, etc., there is a scaffolding position that is most suitable for the work, and scaffolding made of solid logs, pipes, etc. may be just right for a certain type of work. , most of the time it is not easy to use for construction work of other occupations,
This tendency is particularly noticeable in wooden buildings, which have a wide variety of eave heights, shapes, and eaves lengths.

Therefore, in the construction of a wooden house, etc., in such a case, a pair of triangular pyramid-shaped blocks 52 are used on the roof surface 51 as shown in FIG. Scaffolding board support pieces 53 are horizontally fixed to the wooden blocks 52 at an arbitrary height, and further, scaffolding boards 54 are installed between the opposing scaffolding board support pieces. It is used as a scaffold by placing and fixing it, and by tying and fixing the upper end of the roof surface 51 and the wooden blocks 52 or the scaffolding board 54 with the stoppers 55. Also, in some cases, you can simply place a non-slip board or piece of wood on the roof surface and put an appropriate spacer on top of it.
Methods such as passing scaffolding boards to the desired height are also used, but this has the disadvantage that the parts that support the scaffolding boards tend to shake or slide, so there is a constant risk of falling, making it difficult to concentrate on work. .

Structure of the invention The present invention was developed in response to the above-mentioned circumstances, and its gist is that it includes a support rod having an arcuate curved portion, and a pair of support rods provided at or near both ends of the support rod. A leg part having a structure in which at least one leg part is branched into two or more parts, and a scaffold plate support member fitted movably and fixably along the arcuate curved part of the support rod. The scaffolding board can be easily and safely stood on a slope, and the scaffolding board can be supported horizontally by moving the scaffolding board support member along the arcuate curved part depending on the inclination of the slope. The work scaffolding is characterized by: Examples will be described in detail below with reference to the drawings.

FIG. 1 shows a working scaffold 1 showing an embodiment of the present invention, in which a support rod 2 is formed by bending a metal pipe into an upwardly projecting arc to form an arc-shaped curved portion 2a.
A rubber cap 3 is fitted onto one end 2b of the support rod 2, forming one leg. The vicinity of the other end 2c of the support rod 2 is composed of a straight pipe with a square cross section, and a slightly larger square pipe is slidably fitted onto this portion as a slide pipe 4a. The lower end of the slide tube 4a is
An arm 4b is formed which is branched into two and pushed by an equal distance in the left and right directions, and grounding feet 4d and 4e are fixed downwardly to the left and right ends of this arm 4b, respectively, and the other leg as a whole is formed. 4 is formed. 4c
is a set screw for fixing the slide tube to a desired location on the end portion 2c of the support rod. A tube body 5a having exactly the same curvature as the curved portion is loosely fitted on the outer periphery of the curved portion 2a of the support rod 2.
A base plate 5b made of a rectangular metal plate having raised edges 5c, 5c at both ends is placed on top of the supporting pieces 5d, 5.
A scaffolding plate support member 5 is formed by being fixedly installed along the longitudinal direction of the tube body 5a via the tube body 5a. 5e is a set screw that is screwed into a screw hole provided in the pipe body 5a, and when the work scaffold 1 is installed on an inclined surface such as a roof surface 51 with the two legs vertically aligned, the pipe body 5a is moved to near the apex of the curved part of the support rod 2, and the set screw 5e is tightened to fix the position, so that the base plate 5b surface (therefore, the scaffolding board 50 placed on the base plate surface) , used to adjust it so that it is level.

As shown in FIG.
The plate body 6 is fixed to the end of the plate b via a ball joint 7, and the plate body 6
is tilted and the rubber ring 6a comes into contact with the slope, thereby preventing the leg portion 4 from sliding on the slope.

FIG. 3 shows one leg of another embodiment of the invention, which consists of a support rod 2 made of a round pipe.
One end is constituted by a square pipe 12, and a square pillar 13 is loosely fitted into the square pipe 12 so as to be freely inserted and removed, and an arm 14 is fixed to the square pillar 13 so as to form an inverted T shape. , this arm 1
U-shaped guide plates 15, 15 fixed at both ends of 4, respectively.
The grounding feet 16, 16 are loosely inserted into the guide holes bored in the facing pieces 15a, 15a of the A feature is that the leg portion 10 is constituted by a two-ply brake piece 18 that is biased upward by a compression spring 17 that is erected on the side facing piece 15a. 19 is a set screw.

In the embodiment shown in FIG. 1, the grounding feet 4d, 4e
can be used on vertical slopes, but it is difficult to install in places where roofs overlap and there are steps in the left and right directions. 16 pushes the brake piece 18 slightly downward against the spring pressure to release the locked state, moves the grounding foot to the desired height, and releases the finger from the brake piece, then the spring pressure releases the brake. The piece is slightly curved upward and engages with the circumferential surface of the grounding foot, and is firmly fixed to the U-shaped guide plate.

In the above two embodiments, the support rod is supported at three points by the legs, but this can be achieved by providing two or more branched legs at both ends of the support rod. It may also be something that is grounded.
Further, the scaffold board support member may have any shape as long as it can move and fix along the arcuate curved portion of the support rod and can support the scaffold board.

Effects The work scaffold of this application has support rods that curve in an arched shape,
Scaffold plate supporting members are provided so that they can be moved and fixed, so when a pair of these is installed on a slope such as a roof surface, the supporting member can be moved to the top of the curved part of the support rod depending on the slope of the slope. By fixing the scaffolding board, the scaffolding board can always be supported horizontally. Further, the height of the scaffold can be adjusted by providing an extensible mechanism on the legs as in the embodiment. Regarding transportation, if the arms are aligned in the direction of the support rod and the legs and support rod are fixed, the device can be easily transported without being bulky. If the scaffold of the present invention is used, the work of assembling the scaffold on a sloped roof surface, which conventionally required a long time, can be completed in an extremely short time, and can be easily moved depending on the content of the work. or,
The arch-shaped support rod can withstand a large load, and since the ground contact portion makes point contact through a material with a large coefficient of friction, there is no slippage, resulting in high safety.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention. FIG. 2 is an explanatory diagram showing a cross section of the ground-contacting foot portion of FIG. 1. FIG. 3 is a perspective view showing the main parts of another embodiment of the present invention. FIG. 4 is an explanatory diagram showing an example of the prior art.

Claims (1)

[Claims for Utility Model Registration] (1) A support rod having an arcuate curved portion and legs provided at or near both ends of the support rod, where at least one leg branches into two or more. A scaffolding for work, comprising a leg part that is attached to the support rod, and a scaffold plate support member that is movably and fixably fitted to the arcuate curved part of the support rod. (2) The work according to claim 1, wherein at least one of the two legs provided at or near both ends of the support rod is provided so that the height of the curved portion of the support rod can be adjusted. scaffolding.