JPH0821055A - Fall protecting fence to temporary staircase - Google Patents

Abstract

PURPOSE:To easily construct a protecting fence in a constructing site by fitting a plurality of struts into the strut receiving cylinder of a fence support member hooked on a beam side surface, and fitting a stretchable horizontal beam between the struts. CONSTITUTION:When a through hole bored in the web of a beam 2 every pitch according to a module is allowed to communicate with the through-hole of a casing 5, and a bolt 6 is rotated, a movable plate A screwed thereto is advanced to advance the claw 11 of a hook beam 11 obliquely upward, and hooked on the web back surface of the beam 2. Since a movable plate B is thus retreated, a spacer 13 and the hook beam 11 are firmly pressed into contact with the through hole of the web. One hook beam 11 is protruded obliquely upward by a pressing spring 12, and the other hook beam 11 is oscillated slightly upward and extended through the communicating hole, the claw 11a is closely adhered to and hooked by the web back surface of the beam 2, and the claw 13a of the spacer 13 is retreated because the movable plate Be is retreated to press the spacer 13 and the hook beam 11 into the through hole of the web. A fixing bolt is screwed to a strut receiving cylinder integrated with the casing 5 to form a fence support member 16, and the lower parts of struts 17 are fitted to the strut receiving cylinders, whereby the struts 17 are stood in three directions of an opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fence for preventing a fall on a temporary staircase during construction of a house.

[0002]

2. Description of the Related Art During the construction of a house, the stairs leading to the upper floors cannot be finished until other works are completed, and ladders are hung on the floor openings or temporary stairs are used. The work is done with the floor around the ladder and temporary stairs open.

[0003]

[Problems to be Solved by the Invention] Occupational accidents in which an operator accidentally falls downstairs or into a temporary staircase from the floor opening frequently occur, and protective equipment is desired, but at the construction site, the opening is surrounded and The fall protection measures are only taken to the extent that an obstacle is placed to call attention, and it cannot be said to be perfect.

[0004]

[Means for Solving the Problems] In a standardized house in which the floor of the upper floor is crossed with H-shaped or I-shaped steel materials to construct a beam, and a floor material is laid on the beam, the module is standardized. −
Fence support member provided with a hook rod that is removably fitted into a through hole formed in the web of shaped steel at each pitch according to the pitch and a pillar receiving cylinder into which the lower part of the pillar is inserted. Is formed, and the three leg fitting insertion tubes are attached to the outer surface of the column in a plan view.
Attached to each of the letter-shaped positions, expandable and contractible, and
At the opening of the floor that surrounds the temporary stairs, form a horizontal rod that is bent downward at both ends of the rod that can be fixed at a desired position and is provided with legs that can be inserted into and removed from the leg insertion tube of the pillar. The purpose is to prevent the occurrence of occupational accidents by installing a protective fence for fall prevention easily and quickly.

[0005]

[Function] In a standardized house, when the retaining claws are fitted into the through holes formed in the web of the shaped steel material for constructing the beam, the fence supporting member is attached to the side surface of the beam, and the supporting column is received. When the pillar is inserted, the pillar is erected so as to surround the floor opening except for the entrance of the temporary stairs on three sides, and the horizontal rod is expanded and contracted in the direction of 180 degrees or 90 degrees to the leg fitting insertion tube of the pillar. A protective fence is formed when the legs are inserted.

[0006]

EXAMPLE FIG. 1 shows an upper floor according to a conventional method in which a temporary stair 1 is provided in a floor opening. A beam 2 is constructed by crossing the floor of the upper floor with H-shaped or I-shaped steel materials. In a standardized house in which the floor material 3 is laid on the top, as shown in FIGS. 2 to 5, in the through holes 4 formed in the web of the shaped steel material at each pitch according to the module. A bolt 6 having screws 6a and 6b formed in opposite directions in the front half and the rear half of the casing 5 is rotatably fitted between the central wall surfaces of the casing 5, and one end of the bolt is projected to fix the knob I6c.

One screw 6a is screwed into a female screw 7 provided in the central portion of the movable plate A, and both ends of the movable plate A are bulged to form a cavity 8.

The other screw 6b is screwed into a female screw 9 provided in the central portion of the movable plate B, and the groove 1 is formed at both ends of the movable plate B.
0 is set.

A claw 11a which is detachably fitted into a through hole 4 formed in the beam 2 is formed at the tip, and the base end is provided with a movable plate A.
Hooking rod 11 pivotally supported on the wall surface of one cavity 8
Is loosely inserted into the recessed groove 10 of the movable plate B, and is also loosely inserted into the through hole 5a formed in the wall surface of the casing 5 so that the claw 11a is attached to the bolt 6 by the bolt 6.
By the rotation of the through hole 5a, and the concave groove 10
The pressure spring 12 is loaded between the bottom of the hook and the side surface of the hook rod 11.

A hook rod 1 is attached to the wall surface of the other cavity 8 of the movable plate A.
The base end of No. 1 is swingably supported, the central portion is loosely inserted into the groove 10 of the movable plate B, and the pawl 11a provided at the tip is loosely inserted into the through hole 5a of the casing 5 to attach the pawl 11a. By rotating the bolt 6, the bolt 6 is projected and retracted from the through hole 5a.

A slanting surface 11b is formed from near the tip of the latching rod 11 to the central portion, and slides along the slanting surface 11b, and is reversible from the through hole 5a of the casing 5 to the claw 11a of the latching rod 11. The spacer 13 provided with the claws 13a that are projected and retracted is loosely inserted into the hook rod 11.

A through hole 4 formed in the web of the beam 2 and a cable
When the through hole 5a of the single 5 is communicated and the bolt 6 is rotated, the movable plate A screwed into the bolt advances and the claw 1 of the latch rod 11
When the movable plate B moves backward, the claw 13a of the spacer 13 moves backward and the space 1a is inserted into the through hole 4 of the web.
The support 13 and the hook rod 11 are firmly pressed against each other.

One of the latching rods 11 is projected obliquely upward by the pressing spring 12, and the other of the latching rods 11 swings slightly upward and penetrates the communicating hole to penetrate the claws 11 on the rear surface of the web of the beam 2.
When the movable plate B moves backward, the claw 13a of the spacer 13 moves backward and the spacer 13 and the locking rod 11 are pressed against the through hole 4 of the web.

By fixing a cylinder to the wall surface of the casing 5 on the outside of the bolt 6 fitted into the casing 5, the column receiving cylinder 14 is provided integrally with the casing, and the column receiving is carried out. Fastening bolts 15 are screwed into the cylinder 14 to form fence supporting members 16, and the fence supporting members 16 and 16 fixed adjacent to the beams 2 provide the beams 2 at predetermined pitches provided in accordance with the module. A stable span is formed by the fence support member 16 fixedly attached adjacent to the through hole 4 provided in the web.

As shown in FIGS. 6 and 7, three legs 17a and 17b are attached to appropriate positions on the outer surface of the cylinder, and the columns 17 are attached to the T-shaped positions in plan view.
By inserting the lower part of the column into the column receiving cylinder 14 of the fence support member 16, the columns 17 are erected on three sides (excluding the entrance of the temporary stairs) in the opening of the floor surrounding the temporary stairs.

[0016] Also, one rod is expanded and contracted to the other rod, and is fixedly inserted, and both ends are bent downward at right angles, and the legs are insertably and detachably inserted into the leg fitting insertion cylinder 17a. A horizontal rod 18 provided with a portion 18a is formed, and the lengths of the horizontal rods are adjusted and connected between the pillars 17 standing on the fence support member 16 so that the floor openings on three sides except the entrance side of the temporary stairs 1 It forms a fall protection fence around the.

[0017]

EFFECTS OF THE INVENTION Accidents of falling from the floor opening to the lower floor during construction of a house because a ladder was leaned against the floor opening of the upper floor or a temporary stair was installed until the work other than stairs was completed. However, this work accident can be prevented.

It is easy to hang the fence support member 16 to and from the through hole 4 provided in the beam 2 without using any tool, and to erect the pillar 17 on the pillar receiving cylinder 14 of the fence supporting portion 16. It is also easy to remove, and it is also easy to construct and remove the protective fence because the pillar of the horizontal rod 18 can be easily installed and removed from the leg receiving cylinder 17a.

[Brief description of drawings]

FIG. 1 is a cutaway perspective view of essential parts showing a state in which a temporary stair is provided in a floor opening of an upper floor in a standardized house.

FIG. 2 is a front view showing a fence support member according to the present invention.

FIG. 3 is a plan view of the same.

[FIG. 4] A hooking rod provided on the fence supporting member is a casing.
The central part longitudinal cross-sectional view which shows the state which the drawing-in spacer reversibly projected in the thing.

FIG. 5 is a vertical cross-sectional view of a central portion showing a state in which the latching rod protrudes from the casing and the spacer reversibly retracts into the casing.

FIG. 6 is a plan view showing a state in which a protective fence according to the present invention is provided so as to surround three sides of a floor opening except for an entrance side of a temporary staircase.

FIG. 7 is a cutaway side view of the same portion.

[Explanation of symbols]

1 Temporary stairs 2 Beams
3 Floor material 4 Through hole 11 Hooking rod
14 Strut receiving cylinder 16 Fence support member 17 Strut
17a Leg fitting insertion tube 18 Horizontal rod 18a Leg

Claims (1)

[Claims] 1. In a standardized house in which a beam is constructed by crossing shaped steel materials and a floor material is laid on the beam, a web of shaped steel material is punched at each pitch according to a module. Forming a fence support member with a hooking rod that can be freely slidably fitted in the through hole and a pillar receiving cylinder, and the lower part is fitted into the pillar receiving cylinder. Attached and stretchable,
In addition, a stairway entrance is formed in the opening of the floor surrounding the temporary staircase, which is fixed and has both ends bent to form leg rods that can be inserted into and removed from the leg fit-in tube of the pillar. A fall protection fence to a temporary staircase that is constructed by setting up a fence except the side.