JPH11141139A - Simple fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To need no labor for entrance and exit and improve outward appearance as a whole. SOLUTION: Fence pipes 3A, 3B horizontal and parallel in upper and lower two stages are supported between a pair of support posts 1A, 1B vertically provided on the ground. Pipe bodies 51, 52 are slidably inserted in the fence pipes 3A, 3B and mutually connected by a connection pipe 53 between ends exposed from the fence pipes 3A, 3B to make a gate pipe 5. At the time of entrance and exit for a construction site, the gate pipe 5 is pressed in the fence pipes 3A, 3B to provide a certain space between a simple fence and an another adjacent simple fence.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple fence provided for partitioning a construction site or the like, and more particularly to a structure of a simple fence capable of easily securing an entrance to a construction site or the like.

[0002]

2. Description of the Related Art It is compulsory to provide a simple fence for fall prevention around a shaft or the like exceeding a depth of 2 m. Conventionally, pipes of an appropriate length are suspended between supports in two vertical stages. There are many. In this case, the entrance to the manhole or the like is easily stretched with a chain or a rope and removed when necessary. In addition, many simple fences for partitioning construction sites, etc., are lined up by connecting a large number of fences formed by welding pipe materials etc. in a triangular prism shape. In many cases, the space between the entrance and the entrance is made clear by moving the fence adjacent to the space and separating them.

[0003]

However, the size of a shaft or the like differs from site to site, and in each case, the work of cutting a pipe to an appropriate length and attaching it to a column requires a great deal of labor. Further, since the shaft or the like is descended by a ladder or the like immediately after the entrance, there is a problem that it is difficult to remove the chain or the like, enter the shaft, and then re-attach the chain or the like from a low position. In addition, there is a problem that a section formed by a chain or the like has a poor appearance because it is different from a pipe and has no continuity. Furthermore, it is troublesome to move the fences apart if the distance between the adjacent fences is increased every time they enter or exit, and the movement of the fences causes the rows to be displaced outward, thus narrowing the road space around the construction site. There is.

Accordingly, an object of the present invention is to solve such a problem, and it is an object of the present invention to provide a simple fence that does not require installation and entry / exit, and improves the appearance as a whole.

[0005]

In order to achieve the above object, according to the first invention, a fence pipe (3A, 3B) supported at least vertically in two stages on a base (1A, 1B).
And slidably inserted into the fence pipes (3A, 3B),
A gate member (5) joined together between ends exposed from the fence pipes (3A, 3B). Here, the base includes a wide range of supports, such as columns, which can support a fence pipe in at least two stages in parallel.

In the present invention, when the gate member is pushed into the fence pipe, the total length of the simple fence is substantially shortened, leaving a gap between the adjacent simple fences and the like, allowing access to the construction site. Becomes Meanwhile, pull out the gate member from the fence pipe,
If the tip is brought close to another adjacent fence or the like, access to the construction site or the like is regulated. As described above, by pushing the gate member into the fence pipe or pulling the gate member out of the fence pipe, the entrance to the construction site or the like can be easily opened and closed, and smooth entry and exit can be performed. Particularly in a shaft or the like, the entrance can be easily closed by grasping and pulling out the gate member even from a position where the ladder is lowered. Further, since the entire length of the fence can be adjusted by pulling out the gate pipe from the fence pipe in an appropriate amount, even if the perimeter of the shaft or the like changes, it can be dealt with immediately. In addition, since the rows of simple fences are not disturbed by the opening and closing of the entrance, there is no problem of narrowing the peripheral road space such as a construction site. Further, since the gate member and the fence pipe can be made of the same pipe material, the appearance is better than using a conventional chain or the like.

In the second invention, the fence pipe (3A, 3B)
Are connected to each other up and down at appropriate positions, and the support leg (7A) serving as the base has a surface (721) for pushing the upper fence pipe (3A) upward and a surface for pushing the lower fence pipe (3B) downward ( 811) and these fence pipes (3
A, 3B) are supported in parallel.

In the second aspect of the present invention, the simple fence can be easily attached to and fixed to the support leg by the surface for pushing the upper fence pipe upward and the surface for pushing the lower fence pipe downward.

[0009]

(First Embodiment) FIG. 1 shows the appearance of a simple fence. The simple fence is a pair of right and left base pillars 1A,
1B. These columns 1A and 1B are formed by welding bars in an inverted T shape and are placed on the ground.
Fence pipes 3A, 3B are fixed at upper and lower positions between the left and right columns 1A, 1B by known fasteners 2, and these fence pipes 3A, 3B extend in parallel and horizontally. The left and right ends of the fence pipes 3A, 3B are connected by connecting pipes 41, 42 extending in the vertical direction, respectively, to form a long rectangular frame as a whole.

[0010] Pipe bodies 51 and 52 having a smaller diameter are inserted into the upper and lower fence pipes 3A and 3B. The details will be described with reference to FIG. 2. Pipe bodies 51 and 52 having slightly shorter and smaller diameters are respectively inserted into the upper and lower fence pipes 3A and 3B, and each pipe body 5 exposed outside the fence pipes 3A and 3B.
One ends of the first and second members 52 are connected to each other by a connecting pipe 53 extending in the vertical direction, thereby forming a gate pipe 5 as a gate member.

This structure will be described in more detail with reference to FIGS.
A hemispherical cap 61 is fixed to the one end opening of the fence pipe 3A with a tapping screw 62 and closed. The pipe body 51 has an outer diameter along the inner circumference of the fence pipe 3A (FIG. 4), and a groove 511 is formed at the top in the longitudinal direction. As shown in FIG. 3, a tapping screw 63 is screwed into the bottom wall of the groove 511 near the insertion end of the pipe body 51, and the head 631 is located in the groove 511. On the other hand, rivets 6 are provided on the outer wall near the other end opening of the fence pipe 3A.
4 is fixed by caulking, and the caulked portion 641
11. The structure of the lower fence pipe 3B is substantially the same except that it is vertically symmetrical.

Therefore, as shown by the chain line in FIG. 2, when the gate pipe 5 is pulled out from the fence pipes 3A and 3B,
The head 631 of the tapping screw 63 (FIG. 3) of the pipe bodies 51 and 52 comes into contact with the caulking portion 641 of the rivet 64 of the fence pipe 3A (the fence pipe 3B is not shown), and the fence pipe 3A,
The escape of the gate pipe 5 to the outside of 3B is prevented. 3, a tubular collar 65 is welded and fixed to the outer periphery of the distal end portion of the pipe body 51. One end of the connection pipe 53 reaching the pipe body 52 (FIG. 2) is connected to the tubular collar 65. A hemispherical cap 66 having the same shape as the cap 61 is fixed to the cylindrical collar 65 with a tapping screw 67 and closed.

When a plurality of such simple fences are used to surround a shaft or a construction site, and the gate pipe 5 of the simple fence is pushed into the fence pipes 3A and 3B as shown in FIG. Becomes shorter, and the space between the adjacent fence pipes (not shown) is vacant, and it is possible to enter and exit a shaft. On the other hand, when the gate pipe 5 of the simple fence is pulled out of the fence pipes 3A and 3B as shown in FIG. 5 (B), the drawn-out gate pipe 5 approaches another fence pipe and entry and exit to the shaft and the like are regulated. Is done. In this case, the gate pipe 5 can be easily pulled out by grasping the lower pipe body 52 even from a low position on the ladder of the shaft.

As described above, according to the simple fence of the present embodiment, the entrance to the shaft or the like can be easily opened and closed by pushing or pulling the gate pipe 5 into the fence pipes 3A and 3B. Since the rows of the simple fences are not disturbed by the opening and closing of the entrance, the space of the peripheral road such as the construction site is not narrowed. Further, as compared with using a conventional chain or the like, since the gate pipe 5 of the same quality as the fence pipes 3A and 3B is taken in and out, the design is unified and the appearance is good. In particular, in this embodiment, the fence pipes 3A and 3B and the gate pipe 5 inserted therein exhibit a neat appearance as a rectangular frame as a whole, and exhibit an excellent aesthetic appearance.

The simple fence according to the present embodiment includes a gate pipe 5
The length of the entire fence can be adjusted by appropriately pulling out the fences from the fence pipes 3A and 3B, so that even if the perimeter of a shaft or the like changes, this can be immediately dealt with.

The number of columns 1A and 1B is not limited to one pair, and the shape thereof is not limited to that described in the above embodiment. The number of fence pipes 3A and 3B is not limited to two at the top and bottom, and three or more can be provided.
Further, a pipe body 5 inserted into the fence pipes 3A, 3B
Instead of 1, 52, a solid rod can be used. In addition, the fence pipes 3A, 3B and the pipe bodies 51, 5
The cross-sectional shape such as 2 is not limited to a circle.

(Second Embodiment) FIG. 6 shows a simple fence in which the right and left positions are supported by support legs 7A and 7B as bases.
The fence pipes 3A and 3B and the gate pipe 5 of the simple fence have the same structure as that of the first embodiment described above. The left and right support legs 7A and 7B have the same structure, and have a pair of legs 71 and 72. The legs 71 and 72 are opened in an A shape and placed on the ground. In the simple fence, the upper fence pipe 3A is bridged over the tops of the left and right support legs 7A, 7B, and the lower fence pipe 3B is inserted through a connecting plate 81 connecting the legs 71, 72 of the left and right support legs 7A, 7B. doing.

FIG. 7 shows the supporting leg 7A in a state where the legs 71, 72 are folded together. The upper surface of the leg 72 is a fence pipe 3A.
And a semicircular concave surface 721 of the same diameter as A support plate 75 protrudes from the upper portion of the leg 72 toward the side.
The upper end of the leg 71 is rotatably mounted on the shaft 5. As shown in FIG. 8, each of the legs 71 and 72 is formed of an angle member having a U-shaped cross section, and the open sides thereof are opposed to each other.
A connecting plate 81 whose upper end is rotatably connected to the pin 73 is accommodated in the inside (FIG. 9). In the connecting plate 81, a semicircular recess 811 having the same diameter as the fence pipe 3B is formed at the center of one side edge, and a locking recess 812 is formed at the lower end of the other side edge. On the other hand, a lever body 82 whose base end is rotatably connected to the pin 74 is provided inside the leg 72,
A rectangular ring-shaped (FIG. 10) locking piece 83 is rotatably connected to the lever body 82 at the base end thereof.

When a simple fence is attached to such support legs 7A, 7B, as shown in FIG. 11, the leg 71 is rotated sideways around the upper end to form the two legs 71, 72 in an A-shape. Open and stand on the ground. Then, the connecting plate 81 is connected to the leg 71
After turning from inside to outside, the fence pipe 3A is placed on the upper end concave surface 721 of the leg 72 and the fence pipe 3B is positioned in the recess 811 of the connecting plate 81 as shown by the arrow.
In this state, the locking pieces 8 are inserted into the locking recesses 812 of the connecting plate 81.
3, the lever 82 is turned downward in the direction of the arrow as shown in FIG. Accordingly, the locking piece 83 moves downward, and the connecting plate 81 is rotated clockwise in FIG. As a result, the recess 811 of the connecting plate 81 is pressed against the upper half peripheral surface of the fence pipe 3B as indicated by the arrow in FIG. As a result, the upper and lower fence pipes 3A and 3B are pushed vertically by the upper end concave surface 721 of the leg 72 and the recess 811 of the connecting plate 81 so as to widen the gap therebetween, and the simple fence is supported by the support legs 7A and 7B. Fixed. According to such support legs 7A and 7B, a simple fence can be easily attached and horizontally supported without using the fastener 2 in the first embodiment.

[0020]

As described above, according to the simple fence of the present invention,
Not only does it take time to get in and out of shafts, but it also looks good as a whole.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a simple fence attached to a column in a first embodiment of the present invention.

FIG. 2 is a side view of a fence pipe into which a gate pipe is inserted.

FIG. 3 is an enlarged side view of a main part of a fence pipe into which a gate pipe is inserted, and is an enlarged view of an X part and a Y part of FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is an overall side view showing a use state of the fence pipe.

FIG. 6 is an overall perspective view of a simple fence attached to a support leg according to a second embodiment of the present invention.

FIG. 7 is a front view of the support leg in a state where the leg is folded.

8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a sectional view taken along line IX-IX in FIG. 7;

FIG. 10 is a sectional view taken along line XX of FIG. 7;

FIG. 11 is a front view of the support leg showing a mounting process of the simple fence.

FIG. 12 is a front view of the support leg showing a mounting process of the simple fence.

FIG. 13 is a front view of the support leg showing a mounting process of the simple fence.

[Explanation of symbols]

1A, 1B: Support pillar, 3A, 3B: Fence pipe, 5: Gate pipe (gate member), 51, 52: Pipe body, 7A, 7B ...
Support leg, 71, 72 ... leg, 721 ... upper end concave surface 721
(A surface to be pushed upward), 81: connecting plate, 811: a recess (a surface to be pushed downward).

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Yasuhiro Nakao 1278 Narazaki, Kikukawa-cho, Toyoura-gun, Yamaguchi Prefecture Inside Nakao Co., Ltd.

Claims (2)

[Claims] 1. A fence pipe which is supported in parallel at least in two stages on a base, and a gate member which is slidably inserted into each fence pipe and whose ends exposed from the fence pipe are vertically connected to each other. A simple fence comprising: 2. The fence pipe is connected to each other up and down at an appropriate position, and a support leg as the base is provided with a surface for pushing an upper fence pipe upward and a surface for pushing a lower fence pipe downward, The simple fence according to claim 1, wherein said fence pipes are supported in parallel.