JPS6348762Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a height difference by installing leg pieces on both ends of one side of a rectangular frame and attaching leg rods that can be vertically adjusted at both ends of the other side. In particular, the present invention relates to a scaffold for stairs that can be suitably used for stairs, and an embodiment thereof will be described below based on the drawings.

In the figure, a scaffold 1 for stairs according to the present invention has leg pieces 3, 3 installed at both ends of one side of a rectangular frame 2, and a cylinder 4 fixed vertically at both ends of the other side. , 4 to hold the leg rods 5, 5 in a height-adjustable manner, and the rectangular frame 2 is formed of a steel pipe, and a protruding piece 8 for attaching the scaffold frame 7 is provided on the upper surface of the rectangular frame 2. The leg pieces 3 are formed integrally and have the same length by bending a steel pipe extending from the long side downward. Note that a receiving plate 6 is provided at the lower end of the leg piece 5. The cylindrical body 4 is welded to the corner portion of the rectangular frame 2 so that the inner hole 9 thereof is perpendicular to the long side and short side steel pipes forming the rectangular frame 2 and the outer peripheral surface thereof.

The leg rod 5 is made of relatively long steel pipe material, and has a receiving plate 6 at the lower end and a cap 10 at the upper end.
At the same time, through-holes 12 are formed vertically in multiple stages at predetermined pitches.

The cylindrical body 4 and the leg rod 5 are linked via a height adjuster 13. The height adjuster 13 includes a relatively long base tube 15 into which the leg rod 5 is loosely inserted, an adjustment ring 19 screwed into an external thread 16 carved in the base tube 15, and a base tube 1.
The cylindrical body 4 has a cylindrical part 2 formed at the upper end of the base cylinder 15, and a positioning pin 21 that can be fitted through the through hole 12.
2 so as to be slidable up and down, and its lower end abuts the upper surface of the adjustment wheel 19. Therefore, the positioning pin 21 is inserted and held after aligning the through hole 12 and the hole 20 at an appropriate height, and
The vertical height of the cylindrical body 4 can be finely adjusted by rotating the adjusting wheel 19 using a grip 24 protruding from the adjusting wheel 19 and raising and lowering the external screw 16. The scaffold frame 7 has the protrusions 8 at the four corners of the rectangular support frame 26.
The leg pieces 27 that can be aligned with each other and have the same length are hung down,
Further, by providing a bulge 29 at the lower end of the leg piece 27 into which the protruding piece 8 can fit, the leg piece 27 of the scaffolding frame 7 is fitted onto the protruding piece 8 and supported. Further, a scaffold board 31 having hook portions 30 at both ends can be spanned over the support frame 26.

However, in the staircase scaffold 1 of the present invention, the leg piece 3 is placed on the tread a located at a high place, and the positioning pin 21 is placed in the through hole 1 where the rectangular frame 2 is approximately horizontal.
After aligning the hole 20 with the position 2, insert the
By locking and rotating the adjustment wheel 19 using the grip 24 and screwing it forward and backward, the vertical height of the cylinder body 4 can be adjusted. Can be held horizontally.

Further, by fitting the bulge portion 29 at the lower end of the leg piece 27 of the scaffold frame 7 to the protruding piece 8, a horizontal scaffold is formed on a staircase with a height difference.

As mentioned above, the stair scaffold of the present invention has protrusions for attaching the scaffold frame on the top surface of the rectangular frame, leg pieces are installed at both ends of one end of the rectangular frame, and leg pieces are installed at both ends of the other side. The leg rods are mounted vertically with vertically adjustable cylinders, so when there are height differences, such as stairs, you can create a horizontal scaffold by pulling the leg rods downward and adjusting the height. It can be easily formed, and can increase the efficiency and safety of the base work and finishing work of, for example, walls and ceilings of staircases. Furthermore, as in the above embodiment, in addition to the through-holes arranged in multiple stages above and below, the leg rods are connected to the cylindrical body via a height adjuster, so that the leg rods can be finely adjusted over a long stroke. It can be suitably employed in various types of stairs with different levels. In addition, in the scaffolding for stairs of the present invention, the leg pieces may be formed long and placed on the treads located below, while the leg rods may be formed so as to be able to adjust the vertical height on the treads located at a higher place. ,
Further, the height adjuster can be modified into various types such as those shown in the above embodiments, such as one in which the cylindrical body and the leg rod are directly screwed together.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is an enlarged sectional view illustrating a height adjuster. 2... Rectangular frame, 3... Leg piece, 4... Cylindrical body, 5... Leg rod,
7...Scaffolding frame body, 8...Protruding piece, 13...Height adjuster.

Claims (1)

[Scope of utility model registration request] A scaffolding frame body comprising leg pieces of the same length hanging from the four corners of a support frame on which a scaffold board is spanned is provided with protruding pieces on the upper surface of the rectangular frame to support the lower ends of the leg pieces, and one side of the rectangular frame. In addition to installing leg pieces of the same length on both ends,
A scaffold for stairs in which a cylindrical body is fixed vertically to both ends of the other side and a leg rod is held by the cylindrical body so as to be vertically adjustable.