JPH0640282Y2 - Safety enclosure for openings at construction sites - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] Industrial field of application The present invention is to raise or lower materials underground in a construction site where an open-pit trench is laid underground and a steel plate is laid all over the ground surface. In order to provide a spiral staircase, one opening of a flat steel plate is enclosed to enclose the opening to prevent a personal injury that the instruction worker falls in the opening, or to prevent other workers from approaching, The present invention relates to a safety fence for an opening at a construction site that prevents a fall accident and prohibits access to a spiral staircase.

Conventional technology Conventionally, a safety fence is fixedly installed in a fixed opening that does not move for a relatively long period of time, but the opening that removes one of the flat steel sheets laid on one side is opened and closed for each work, and it also moves. There was no safety fence installed to do this.

Therefore, in order to move the material up and down from the opening, the opening is narrow and small and deep, and since the opening is located at the center of the construction site and moves, there is no place to suspend the lifeline around. Since the instructing worker stands up on the flat steel plate around the opening and leans out and gives instructions, the instructing worker may fall and cause personal injury, or other workers may approach the opening and be dangerous. However, it has a drawback that it may cause an accident that the object falls, or that it requires the effort to go in and out of the spiral stairs, which is prohibited under construction, and descend and climb.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention has a safety fence that is movable and freely fixed around the opening for removing one sheet of steel sheet laid on one side, so that a lifeline can be hooked on the safety fence. Instructing a worker to prevent accidents that result in a fall, prevent other workers from approaching, prevent objects from falling, and opening and closing spiral stairs at construction sites. It is intended to provide a safety enclosure for the department.

[Constitution of device]

Means for Solving the Problems In view of this point, the present invention has casters fixed to the lower end to vertically set vertical rods at four corners, and horizontal rods are fixed between the vertical rods so that the vertical rods are fixed between the vertical rods. Attach a retractable long door that can be opened and closed on one side, attach a retractable long door on three sides, install a fixing device between the horizontal rod and the bottom steel plate, and attach a safety pipe to the retractable long door. The telescopic long door is configured such that both ends of a grid-like rod composed of crossed front and rear rods are locked to a running rod and a fixed rod, and the grid-like rod is pivotally attached by an axis. A handle is attached to the center of the traveling rod, and a caster is fixedly provided at the lower end of the traveling rod to provide a safety enclosure for the opening at the construction site.

Function The present invention has a safety fence installed around a piece of flat steel sheet laid open on the ground surface to remove a flat steel sheet laid on the ground surface. The safety fence on the bottom steel plate, then remove the bottom steel plate in the center of the safety fence to open the opening, and the instructing worker is a safety pipe, vertical rod, horizontal rod, telescopic long door, etc. The lifeline is locked at the end and the instruction to raise and lower the material to the opening is carried out by leaning forward to the opening.

When the work on one opening is completed, the opening is covered with a flat steel plate and the safety enclosure is moved to the position where the next opening is to be opened. The flexible long door is shrunk and disassembled for storage, storage, and transfer to other construction sites.

Embodiments An embodiment of the present invention will be described below with reference to the drawings. 1 is a safety enclosure of a movable and freely fixable opening portion in a construction site according to the present invention, which is an open-pit underground and is entirely on the ground surface. The safety enclosure 1 is installed around the opening 3 from which one of the laid steel plates 2, 2a ... Is removed.

4, 4a ... are vertical rods having casters 5, 5a ... fixed at the lower end and standing upright at the four corners. The vertical rods 4, 4a ... Have horizontal rods 6, 6a. Telescopic long doors 7, 7a ...
It is fixed through the running rod 8 and the fixed rod 9 of
The side (doorway) is a horizontal rod 10 and clamps 11 and 11a at the upper part.
It is fixed by.

Next, the retractable long doors 7, 7a ... At the entrances and exits will be described. The retractable long doors 7, 7a ... Are pivotally connected by pivots 12, 12a. It is composed of a running rod 8 and a fixed rod 9 which slidably hold both side ends of the fixed rod 9, and the fixed rod 9 is a clamp 1
It is fixed to the vertical rods 4 and 4a by 4 and 14a, and the traveling rod 8 and the vertical rods 4 and 4a are freely contactable and separable, and a key 15 is provided on both of them, and at the lower end of the traveling rod 8. Has casters 16 fixed.

In the grid-like rod 13, rods 17, 17a ... And rods 18, 18a ... Arranged at equal intervals in the front part and the rear part are crossed diagonally.
In the crossing portion, pivots 12 and 12a are pivotally attached to each other at intervals at intervals.

The running rod 8 and the fixed rod 9 form an opening 20 in the longitudinal direction of one side wall 19 forming the rod, and support pieces are provided on both sides of the opening 20.
Sliding grooves 22 are formed by leaving 21 and 21a protruding and the ends of the rods 17, 17a ... And rods 18, 18a.
2, 12a ... are pivotally connected to each other so as to be sandwiched, and the ends of the rods 17, 17a ... And the rods 18, 18a ... Are inserted into the sliding groove 22 to allow vertical sliding. .

On the other hand, the rods 17, 17a ... And the rods 17, 18a. Between them, they are pivoted with nuts 23 and bolts 24.

The retractable long doors 7 and 7a, which are members according to the present invention,
The structure is not limited to the above structure, but the grid-like rod 13 is formed in two steps in the front and rear direction and is pivotally connected by the pivots 12 and 12a, and the traveling rod 8 that holds both end portions of the grid-like rod 13 and the fixed body. The rod 9 is configured so that the rods 17, 17a ... And the rods 18, 18a ... Are crossed diagonally, and the pivots 12, 12a ...
It may be pivotally attached to each other so as to be rotatable, or a vertically elongated hole may be bored in the pivotally attached portion, as long as it is expandable and contractable.

Next, extendable long doors 7 and 7a with 3 sides other than doorways ...
The traveling rod 8 and the fixed rod 9 are both fixed to the vertical rods 4, 4a by the clamps 25, 25a, and the horizontal rods 6, 6a are fixed by the clamps 26, 26a. It is fixed to the rod 9.

The horizontal rods 6, 6a ... And the pivots 12, 12a ... may be pivotally attached and then fixed by a clamp.

27, 27a ... are fixing devices for fixing the flat steel plates 2, 2a ... and the safety enclosure 1, and the horizontal rods 6 on the two sides of the safety enclosure 1 in the longitudinal direction,
Horizontally slidable clamp 2 with fixing pin 28 on 6a ...
9 and 29a are fixed, and pin holes 30 engaged with fixing pins 28 at both ends and lifting holes 31, 31a for the flat steel plates 2 and 2a.
Fixing tools 33, 33a, etc., to which a fixing rod 32 that engages with are fixed, are equipped.

Incidentally, as shown by the one-dot chain line in FIG. 2, the fixing devices 27, 27a ...
Are fixed to the lifting holes 31, 31a ... of the flat steel plates 2, 2a ..., But the flat steel plates 2, 2a without the lifting holes 31, 31a.
In the case of ..., the fixing devices 27, 27a ... may be engaged with the inner peripheral edge of the opening 3.

For example, as shown in FIGS. 8 and 9, in the case where the flat steel plates 2, 2a ... Are placed on the H-section steel 34,
A U-shaped fixing hook 36 having a bolt 35 is integrally formed on the tips of the fixing members 33, 33a, and the fixing hook 36 is engaged with the edge portion of the H-shaped steel 34 and fixed by tightening the bolt 35. Tools 33, 33
a ... is fixed, and as shown in FIG. 10 and FIG. 11, when there is a vertical wall 37 at the edge of the flat steel plates 2, 2a. The fixing members 33, 33a ... Are fixed, and as shown in FIGS. 12 and 13, there are vertical walls 37 at the edges of the flat steel plates 2, 2a.
In the case where the notch 38 is formed in the notch 38, the notches 38 are used to fix the fixtures 33, 33a ... to the vertical wall 37, and are shown in FIGS. 14 and 15. Similarly, in the case where the vertical wall 37 is present at the edge of the flat steel plates 2, 2a ... And the circular hole 39 is formed in the vertical wall 37, the circular hole 39 is fixed to the vertical wall 37. It is designed to fix the tools 33, 33a ....

40, 40a are hooks fixed to the four sides of the safety enclosure 1 which are extendable and retractable long doors 7, 7a.
The safety pipes 41, 41a ... Are inserted through a. The safety pipes 41, 41a ... And the vertical rods 4, 4a .., Horizontal rods 6, 6a .., Telescopic long doors 7, 7a. It is done like this.

Numeral 42 is a handle of the extendable and retractable long doors 7, 7a ... At the entrance and exit, and the handle 42 is fixed to the traveling rod 8.

Next, the operation of the safety enclosure of the opening in the construction site according to the present invention will be described. An open-faced underground basement steel plate 2 laid all over the ground surface,
The safety enclosure 1 is installed around one of the sheets 2a ... to be removed, and the fixing rods 32 of the fixtures 33, 33a ... Are inserted into the lifting holes 31, 31a of the flat steel sheets 2, 2a. (Fixing fixtures 33, 33a ... To the inner peripheral edge of the portion 3) together with the fixture 3
Clamp 2 by inserting the fixing pin 28 into the pin hole 30 of 3, 33a.
By fixing the fixtures 27, 27a ... to the horizontal rods 6, 6a ... and the flat steel plates 2, 2a ... by means of 9, 29a ..., the safety enclosure 1 is fixed on the flat steel plates 2, 2a. Next, remove the bottom steel plates 2, 2a ... in the center of the safety enclosure 1 and open the opening 3.
The worker instructs the safety pipes 41, 41a ..., the vertical rods 4, 4a ..., the horizontal rods 6, 6a ..., the retractable long doors 7, 7a ... This is done by leaning forward into the opening 3.

When the work of the opening 3 at one place is completed, the opening 3 is covered with the bottom steel plates 2, 2a ... And the safety enclosure 1 is moved to the position where the next opening 3 is to be opened by the casters 5, 5a. To do.

Also, the safety enclosure 1 is a clamp 11, 11a, 14, 14a, 25, 25a.
..., 26, 26a ..., 29, 29a ... are removed, or the retractable long doors 7, 7a ... are contracted and disassembled for storage, storage, or transfer to another construction site.

[Effect of device]

In short, according to the present invention, the casters 5, 5a are fixed at the lower end and the vertical rods 4, 4a are set up at the four corners, and the horizontal rods 6, 6a are fixed between the vertical rods 4, 4a. The vertical rods 4 and 4a ... are fitted with retractable long doors 7 and 7a that can be freely opened and closed on one side, and the retractable long doors 7 and 7a are mounted on three sides and the horizontal rods 6 and 6a ... And flat steel plate 2,
Fixing devices 27, 27a are installed between 2a, and safety pipes 41, 41a are attached to the telescopic long doors 7, 7a, and the telescopic long doors 7, 7a are crossed before and after. Both ends of a grid-like rod 13 composed of two-staged rods 17, 17a ..., 18, 18a ... Are locked to the traveling rod 8 and the fixed rod 9, and the lattice-like rod 13 is pivoted by pivots 12, 12a. The safety enclosure 1 fixed to the flat steel plates 2, 2a ...
It is possible to perform instruction work by locking the lifeline on the top, so it is possible to prevent personal accidents that fall from the opening 3 underground.
In addition, since the safety enclosure 1 is installed around the opening 3, it is possible to prevent other workers from approaching, accidents in which objects fall, and entry / exit to spiral stairs, etc. where entry / exit is prohibited. Further, by providing the casters 5, 5a ..., The safety enclosure 1 can be easily moved even if the opening 3 moves.

Also, the safety enclosure 1 is a clamp 11, 11a, 14, 14a, 25, 25a.
…, 26, 26a…, 29, 29a… can be removed, and the retractable long doors 7, 7a… can be disassembled for easy storage, storage, and transfer to other construction sites. .

Further, since the handle 42 is attached to the central portion of the traveling rod 8 and the caster 16 is fixed to the lower end portion thereof, it is possible to further smoothly extend and retract the telescopic long doors 7, 7a. By directly gripping the handle 42 during operation, the hand is pinched at the ends of the rods 17, 17a ..., 18, 18a ... Which move up and down or rotate in the sliding grooves 22 of the traveling rod 8 and the fixed rod 9. Accidents can be prevented, and the load on the telescopic long doors 7, 7a ... Can be received in good balance by the grounding of the casters 16. Therefore, even when the telescopic long doors 7, 7a ... are extended, an unreasonable load is applied to each pivot point. It is possible to prevent the elastic long doors 7, 7a ...

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is a plan view of a construction site, FIG. 2 is a plan view of an opening and a safety enclosure, FIG. 3 is a front view of a safety enclosure, and FIG. Is a front view when the same is closed, FIG. 5 is a sectional view taken along line AA of FIG. 3, FIG. 6 is a sectional view taken along line BB of FIG. 3, and FIG. FIG. 8 is a sectional view showing a state in which the fixing device is attached to the inner peripheral edge of the opening, FIG. 9 is a side view of the same, FIG. 10 is a sectional view of another embodiment of FIG. 8, and FIG. Is a side view of the same as above, FIG. 12 is a sectional view of another embodiment of FIG.
FIG. 13 is a side view of the same, FIG. 14 is a cross-sectional view of another embodiment of FIG. 8, FIG. 15 is a side view of the same, and FIG. 16 shows a state in which a vertical rod, a horizontal rod, and a telescopic long door are attached. It is a perspective view. 1 …… Safety enclosure 2,2a …… Folded steel plate, 3 …… Opening 4,4a …… Vertical rods 5,5a …… Casters 6,6a …… Horizontal rods, 7,7a …… Extendable long door 8 …… Running rod, 9 …… Fixed rod, 10 …… Horizontal rod, 12, 12a…
… Axis 13 …… Lattice rod, 17, 17a …… Rod 18, 18a …… Rod, 27, 27a …… Fixing device 41, 41a …… Safety pipe, 42 …… Handle

Claims (2)

[Scope of utility model registration request] 1. A caster is fixedly mounted on the lower end so that vertical rods are erected at the four corners, horizontal rods are fixed between the vertical rods, and a telescopic long door that can be opened and closed on one side is provided between the vertical rods. The telescopic long doors were attached to the three sides, the fixtures were installed between the horizontal rod and the flat steel plate, and the safety long doors were attached with safety pipes. The telescopic long doors were crossed. A safety fence for an opening at a construction site, characterized in that both ends of a grid-shaped rod made of two-tiered rods are locked to a traveling rod and a fixed rod, and the lattice-shaped rod is pivotally attached by a pivot. . 2. The safety enclosure for an opening at a construction site according to claim 1, wherein a handle is attached to a central portion of the traveling rod, and a caster is fixed to a lower end portion.