JPH01239300A - Screening device - Google Patents

Abstract

PURPOSE:To facilitate setting up by mounting a fluid bag, screening a clearance between a frame and a screened part, and a screening unit, screening the inside of the frame, to the frame of shape almost copying forming the screened part. CONSTITUTION:A frame 1 of semicircular shape almost copying forming, for instance, a tunnel is constituted of pipe material of trass construction, being reinforced by a flange 12 and a reinforcing member 13. The frame 1 mounts a fluid bag 2, provided with air-tightness, in the outside while a screening sheet 3 in the inside. Further the sheet 3 provides a door part 4 for a dolly and a worker to pass through, and the door part 4 can be opened and closed piling, for instance, many plates 40 into a blind state. The bag 2 is charged in its inside with gas of air or the like, and the bag 2 is deformed copying the irregularity of a wall X, performing an enclosed seal between the wall X and the frame 1. Accordingly, obtaining the lightness of weight further simplifying the assembly, screening can be perfectly attained.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a blocking device, and particularly aims to provide a blocking device suitable for use at civil engineering construction sites such as tunnels.
target

<Prior Art> In tunnel construction, mines, etc., it is often necessary to close tunnel passages and openings to prevent noise, dust, smoke, etc. from blasting caused by the construction.

In the past, when it was necessary to close off a building, it was common to do so by stacking concrete blocks or sandbags.

<Problems with conventional technology> However, conventional methods have the disadvantage that construction takes a lot of time and effort, and gaps tend to form between walls and evacuation structures, making it impossible to achieve a sufficient sound insulation effect. There wasn't. The sound insulation effect will be greatly reduced if there are gaps, and the sound insulation effect will be greater if you completely eliminate the gaps in response to irregular walls in the area to be shielded, or if you completely eliminate the gaps in the evacuation area. This required a great deal of work and had the drawback of increasing costs. The present invention has been made to improve the drawbacks of the conventional method described above, and provides a low-cost shielding device that has a large evacuation effect, especially a sound insulation effect, and is easy to install. The purpose is to For this purpose, the present invention includes a frame that is installed in a wave speed closing section and has a shape that approximately follows the shape of the wave speed closing section, a fluid bag that opens a gap between the frame and the wave speed closing section, and a fluid bag that is installed inside the frame. The basic feature is that it has a shield provided therein.

In this configuration, the wave closing section is basically evacuated by the shielding body, and the gap between the frame and the wall of the wave closing section is evacuated by the fluid bag. This fluid bag is, for example, an air bag, etc.
It has Ir flexibility and allows evacuation between the frame and the wall of the wave velocity closing part without creating a gap even if the wall has an irregular surface.

<Example> An embodiment of the present invention will be described below based on the drawings.

FIG. 1 shows an example in which the apparatus of the present invention is applied to evacuation of a tunnel opening. A substantially semicircular frame 1 that substantially follows the shape of the tunnel is installed at the tunnel opening. As shown in FIG. 2, this frame 1 is made of a pipe material with a truss structure. This frame 1 is provided with a flange 12 and a reinforcing member 13 to improve its strength. Further, the bases at both ends of the frame 1 are supported by anchor plates 10.11. Anchor plate 1
1 also serves as a pipe cover. A fluid bag 2 is provided on the outside of the frame 1, that is, along the wall X, and a blocking sheet 3 serving as a blocking body is attached to the inside. That is, the bottom surface of the truss of the frame 1 is installed facing the wall X, and as shown in FIG. An evacuation sheet 3 is stretched inside the frame 1 through the bottom surface. The fluid bag 2 is mounted on the relief sheet 3 on the bottom of the frame 1 and is configured to come into close contact with the wall X to close the gap between the frame 1 and the wall X.

The fluid bag 2 is an airtight bag made of a material such as synthetic resin, and is configured to seal the space between the frame 1 and the wall X by filling the inside with a fluid such as air. . According to such a fluid bag 2, even if there is an unevenness on the surface of the wall X, the fluid bag 2 deforms C following the unevenness.
It is possible to completely close the space between the frame 1 and the wall X without creating a gap. It is also possible to fill a suitable sealant between the fluid bag 2 and the wall X to further improve the sealing performance.

Like the fluid bag 2, the evacuation sheet 3, which is a shielding body, is also made of a flexible material with airtightness such as synthetic resin.
It may be made of any material as long as it has evacuability and sound insulation properties, and may be a rigid body on a plate, for example. However, a flexible material such as a sheet is preferable for convenience of transportation and ease of assembly. The evacuation sheet 3 also has a semicircular shape that roughly follows the shape of the tunnel, and its circular end is engaged with the end of the frame 1 on the middle side of the tunnel as described above. and,
A sand bag 7 is attached to the bottom part corresponding to the radius so that there is no gap between it and the ground Y.

In this embodiment, the evacuation sheet 3 is provided with a door 1 through which equipment, transport vehicles, workers, etc. can enter and exit.

The door section 4 is provided approximately at the center of the evacuation sheet 3. In this embodiment, a large number of plates 40 are stacked like a blind, connected by a support member 45, and a wire 41 is wound up by a motor 42 to open the plates 40. It is configured to be pulled up toward the upper blade to form a τ open part. FIG. 2(B) shows a state in which the plate 40 is pulled up.

The plates 40 are pulled up one on top of the other like blinds. Various other structures may be used for the door section 4, such as a sliding door or a curtain type. What is important about the door 4 is that no gap is created between it and the ground Y and the evacuation sheet 3 when it is closed. If there is a gap, the sound insulation properties will be significantly deteriorated as described above. For this purpose, a balance pipe 4 is installed at the bottom end of the door 4.
3 and a sandbag t14 are provided so that no space β is formed between the sandbag and the ground Y.

Further, in this embodiment, fasteners 5 and 6 are attached to the upper side and both sides of the door portion 4. The purpose of kneading is to bring each plate 110 of the door portion 4 and the slow-closing sheet 3 into close contact with each other so that no gaps are formed. FIG. 3 shows details of the fastener 5. A U-shaped frame 51 is provided inside the μ-closed sheet 3, and the uppermost plate Z10 is mounted inside the frame 51. The frame frame 51 has an air bag 5
0 is provided, and by inflating the air bag 50, the plate 40 is compressed against the inner wall of the frame 51. FIG. 4 shows the configuration of the fastener 6. Similarly, the fastener 6 has a U-shaped frame 61 attached to the inside of the slow-closing sheet 3, and a plate 40 is attached here.
A hook-shaped locking end 63 is inserted. A locking piece 62 corresponding to the locking end 63 and an air bag 6 are provided on the inner wall of the frame frame 61.
0 is provided to shade the air bag 60, so that the locking end 63 is engaged with the locking piece 62 and the plate 40 is brought into close contact with the frame 61.

In addition, 9 is a wind pipe, and an evacuation bag 90 is provided here as well, and by inflating it inside, the slow closing performance is improved.

In the above configuration, first, the frame 1, the fluid bag 2, the slow closing sheet 3, and the door section 4 are installed at a position where shielding is required. This can be carried out as assembled or assembled on site, and the fluid bag 2 is filled with fluid such as air to close the gap between the frame 1 and the wall X. At this time, a suitable sealant may be interposed between the fluid bag 2 and the wall X.

Motor 4 is used when it is necessary for workers to pass or equipment to be brought in.
Activate 2 and pull up the play)-40 to form an opening. When it is necessary to close the door late, such as during blasting, lower the plate 40, fill the air bags 50 and 60 with the fasteners 5 and 6, and completely close the door 4 and the slow closing sheet 3. to be sealed. At the same time, an evacuation bag 90 is inserted into the wind pipe 9 and inflated to close the wind pipe 9 as well.

This allows for complete late closing of the tunnel.

Incidentally, the delayed closing performance can be further improved by installing the above-mentioned structure in a plurality of shapes in the tunnel as required.

Next, other configurations are shown in FIGS. 5 to 12.

The embodiment shown in FIG. 5 is applied to a case where an existing frame 15 is already attached to concrete such as a tunnel, and is provided with an opening/closing mechanism of a simpler structure.

As shown in FIG. 8, the existing frame 15 is already embedded in concrete in a tunnel or the like, and only its bottom surface is exposed. An attachment pipe 16 is welded to this existing frame 15, and the slow-closing seat 3 is attached thereto via a seat pipe 27. The late-closing sheet 3 is divided into left and right parts as shown in FIG. 5, and the two late-closing sheets 3 are configured to close the tunnel opening late. Opening/closing plates 17 are attached to the ends of the late closing sheet 3, and the opening/closing plates 17 overlap each other to perform late closing. The opening/closing plate 17 has a hinge 18 at its center, and is bent at the hinge 18 as shown by the imaginary line, so that the slow closing sheet 3 can be opened.

In this embodiment, as shown in FIG. 6, the shielding bodies, which are formed by one block of the slow-closing sheet 3 and the hinge 18, are arranged in four stages at predetermined intervals, so that the evacuation effect can be completely suppressed. A lift pipe 19 is installed at the hinge 18 to connect the four stages, and the lift pipe 19 is pulled up by a drum 2°0 through a wire 21 and a motor 22 to open the opening/closing plate 17. The slow-closing seat 3 is opened by bending the hinge 18.

FIG. 7 shows an enlarged view of the opening/closing plate 17 portion. (A) is a front view, and (B) is a plan view. The opening/closing plate 17 and the opening/closing plate 17 have portions that overlap each other, and are configured to be tightened by a cam 24. That is, a plurality of brackets 26 are fixed to the one-force opening/closing plate 17, and a plurality of cams 24 are rotated here via a camshaft 23! l] can be attached.

The camshaft 23 is equipped with an opening/closing handle 25, and the cam 24 is manually rotated to push the opening/closing plate 17 applied by another force onto the opening/closing plate 17, thereby fastening the opening/closing plates 17 together. There is.

According to the above configuration, the late-closing sheet 3 can completely perform late-closing of an opening such as a tunnel. In addition, the shielding sheet 3 is attached to the existing frame 15 attached to concrete or the like without any gaps, and the connecting portion is also connected to the opening/closing plate 17 and the opening/closing plate 1.
7, it can be completely closed, so no sound leakage occurs. Furthermore, when it is necessary to open the opening, it can be easily opened by driving the motor 22 and bending the opening/closing plate 17 at the hinge 18.
There has never been a problem with the loading of goods or the entry and exit of people. 9 to 12 show other embodiments of the mounting structure for the late-closing seat 3 and the existing frame 15.

In FIG. 9, a presser metal fitting 29 is welded to the existing frame 15, and a sheet pipe 27 and a presser pipe 28 are inserted into the recess.
is inserted and held down by a sheet presser 30.

In Fig. 10, hanger pipe 3 is attached to existing frame 15.
1 is welded, a hook 32 is hung down from this, the slow-closing sheet 3 is fastened with a pad 33 and a backing pad 34, and the end of the slow-closing sheet 3 is directly adhered to the existing frame 15. .

Figure 11 shows a structure that can be applied when the existing frame 15 is exposed from the concrete.
1 of 5. Connect the seat pipe 27 directly to the Q part with the bracket 35.
It has a structure that is stopped by.

In Figure 1-2, the hanger 36 is attached to the existing frame 15,
This hanger 36 locks the seat pipe 27 of the late-closing sheet 3, and the end of the late-closing sheet 3 is directly fixed to the existing frame 15 with a flat net 37.

<Effects of the Invention> As explained above, the delay closing device of the present invention is lightweight, easy to assemble, and has the advantage of being able to perform complete late closing without creating a gap with the wave speed closing section.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-11 in FIG. 1, FIG. 3 is a sectional view taken along the line ■-■ in FIG. The diagram shows IV in Figure 1.
5 is a front view showing an example of another configuration, FIG. 6 is a plan view thereof, FIG. 7 is a partially enlarged view, FIG. 8 is a plan view thereof, and FIG. Figures 12 through 12 are detailed views of the installation of the late-closing seat. 1: Frame, 2: Fluid bag, 3: Late closing sheet, 4: Door section, 5: Fastener, 6: Fastener, 7: Sand bag, 9: Wind pipe, 10: Anchor plate, 11: Anchor plate,
12: Norange, 13: Reinforcement ladle, 15: Existing frame,
16: Mounting pipe, 17: Opening/closing plate, 18: Hinge, 19
: Fried pipe, 20 Ni drum, 21: Wire, 22: Motor, 23: Camshaft, 24: Cam, 25: Opening/closing handle, 26: Bracket, 27: Seat pipe, 28
: Presser pipe, 29: Presser metal fitting, 30: Sheet presser, 3
1: hanger pipe, 32: hook, 33: gold, 34
: backing metal, 35 nib bracket, 36: hanger, 37: flat steel, 40 nib plate, 111: wire, 42: motor,
43: Balance pipe, 44: Sand bag, 45: Support material 45
, 50: Air bag, 51: Frame frame, 60: Air bag, 6
1: Frame frame, 62: Locking piece, 63: Locking end, 90:
Evacuation bag. Patent applicant Kitashin Construction Co., Ltd. Agent
Patent attorney Kiyoshi Takahashi and 1 other person ('J Oka)

Claims (1)

[Scope of Claims] 1. A frame installed in a part to be shielded and having a shape that substantially follows the shape of the part to be shielded, and a fluid bag for closing a gap between the frame and the part to be shielded; A shielding device comprising: a shielding body provided inside a frame. 2. A frame having a shape that substantially follows the shape of the shielded part, a shielding body made of at least two soft materials attached to the frame so as to close the shielding part, and the plurality of shields. A closing device comprising: an opening/closing device that opens and closes the closing portion by connecting and disconnecting the closing body.