JPH0246593Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a handrail device for a landing in a steel tower. High-rise steel towers, such as power transmission towers, have landings installed within the tower, especially near the overhangs of the towers.

The structure of this landing is extremely simple because it is temporarily installed as a tool storage during the construction work of the steel tower, and the handrail device is therefore omitted. However, in recent years, many modifications of existing steel towers have been seen, and it is also possible to reuse the landings during maintenance and inspection work, but in this case, it becomes necessary to install handrails on the landings to ensure safer work. It's here. Since there are many different types of steel tower structures, there are also many different shapes and structures of the landings.
The present invention proposes a handrail device that can be widely used in these situations, and is also sturdy and highly safe.

FIG. 1 is a perspective view showing the handrail device of the present invention.
The steel tower constituent members are shown as skeletons with some parts omitted. FIG. 2 is a top view of the tower landing viewed from above, with the handrail material and reinforcing material of the handrail device omitted. FIG. 3 is a front view of the handrail device as seen from the inside of the tower, with the reinforcing material of the handrail device omitted. FIG. 4 is a side view of the handrail device, and FIG. 5 is a sectional view taken along the line AA in FIG. 3.

The steel tower landing is provided inside the tower near the arms of the steel tower, and includes a main column 1 which is a leg of the steel tower, a horizontal member 2 provided by bridging the main columns 1, and a cross arm member 3.
It is directly or indirectly attached and fixed to, etc.

The steel tower landing consists of a landing frame 4 on which expanded metal is stretched as a scaffold, and when workers who have ascended the tower use the step bolts provided on the main pillar material 1 as a passage, when they enter the arms etc. It is used as a tool storage area for checking tools in advance, and for other related purposes.

The handrail device 5 shown in the drawings as an example is composed of a vertical member 52 which is a base material which is a first member of two sets, a handrail member 53 and a reinforcing member 54, and a hollow member 55. Two sets of base materials 51 are fixed to the back side of the landing frame 4 with hook bolts with a slight length protruding inside the tower. A vertical member 52 is vertically erected and fixed near the end of the protruding portion of the base member 51 on the inside of the tower of the landing frame 4. A reinforcing material 54 is connected to the vicinity of the upper part of the vertical member 52 and the end portion of the base member 51 protruding inside the column, and furthermore, the vertical member 52
A stiffener 56 is provided at the lower end for the purpose of vertical positioning and reinforcement with respect to the base material 51.

A handrail material 53 is placed across the upper end of each of the vertical members 52 erected above, and a fixed piece 57
is held in position via. The details of the installation using the fixing piece 57 are as shown in FIG.
is made by bending a flat plate of appropriate width into a hook shape in the middle, with both ends slightly bent inward, and by pressing the inner surface of one side against the upper end of the vertical member 52, the other side is pressed against the upper end of the vertical member 52. It is fixed to the material 52 with bolts and nuts, and holds the handrail material 53.

Therefore, since the handrail material 53 and the vertical material 52 are not directly fixed with bolts and nuts, there are no protrusions on at least the upper surface of the handrail material 53, and the handrail material 53 can be traced smoothly, making it safer especially as a handrail installed at a high place. It has a high level of character and is extremely unique. If necessary, a mid-branch 55 is provided near the center of the vertical member 52 in parallel to the handrail member 53.

In the embodiment, the handrail device composed of the above-mentioned members includes a base material 51, a vertical material 52, a handrail material 53,
For the reinforcing members 54, hot-dip galvanized angle steel members each having a side of 50 mm and a thickness of 4 mm were used, and except for fixing the vertical members 52 and handrail members 53, they were fixed using 12φ bolts. Furthermore, we also used hot-dip galvanized steel for the middle rail 55, stiffener 56, and fixing piece 57, and examined the assembly by installing the handrail material 53 at a height of 1 m from the top surface of the landing frame 4, and the evaluation was quite satisfactory. It was hot.

The handrail device of the present invention consists of a first member (base material 51) fixed to the back side of the floor of a landing provided in a tower using steel tower constituent members, and a second member erected perpendicularly to the first member (base material 51). Even if there are three or more sets of the two members (vertical members 52), and even if the installation interval between them is arbitrary, the handrail (handrail member 53) can be freely installed and held, so it can be used in a wide variety of ways. It can be installed on many types of steel tower landings, and it eliminates the inefficiency and danger of working at heights, which was traditionally required by individually inspecting the shape and measuring the dimensions and manufacturing each piece, and is also sturdy. As a result, we were able to provide a handrail device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the handrail device of the present invention, with the steel tower constituent members partially omitted as a skeleton. FIG. 2 is a top view of the tower landing viewed from above, with the handrail material and reinforcing material of the handrail device omitted. FIG. 3 is a front view of the handrail device as seen from the inside of the tower, with the reinforcing material of the handrail device omitted. Fig. 4 is a side view of the handrail device, and Fig. 5 is a side view of the handrail device.
FIG. 4 is a sectional view taken along the line AA in FIG. 3; 1... Main pillar material, 2... Horizontal material, 3... Arm member, 4... Landing frame, 5... Handrail device, 51... Base material, 52... Vertical material, 53... Handrail material, 54...
Reinforcement material, 55... Nakasagi, 56... Stiffener, 5
7...Fixed piece.

Claims (1)

[Scope of utility model registration request] A landing provided within the tower using steel tower constituent members, at least two sets of first members fixed to the back side of the floor of the landing and protruding slightly inside the tower; Each of the first members has a second member vertically fixed and erected near the inner end of the tower of the landing, and the second member and the inner end of the tower of the first member. A reinforcing member to be connected, a handrail material placed across the upper end of each of the second members and held by the second member via a fixed piece, the fixed piece being a flat plate with a bent middle part. One side is fixed to the second member, and the inner surface of the other side is used to press and hold the handrail material against the second member, and is characterized by being composed of the above members. Handrail device for landing on steel tower.