JPH11270191A - Air tube tent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air tube tent with a structure suitable for work including manhole work. SOLUTION: A framed construction (a) formed on a floor sheet (c) placed on a ground is covered with a casing (b). In this case, the floor sheet (c) is formed to be partly open/closed and the open/closed portion E of the floor sheet (c) is formed to be exposed to the ground. The open/closed portion E is exposed to the ground or a manhole D and its vicinity is encircled by an air tube tent to prevent the blow-in of wind and rain for doing efficient construction or inspection work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air tube tent for work in which a columnar air chamber which can be inflated and contracted is erected to form a frame structure, and more particularly to an air tube tent used for construction inside a manhole. .

[0002]

2. Description of the Related Art Conventionally, for example, a manhole installed on a road surface is opened, and a pipe,
When conducting wiring work or inspection work (sewage, water supply, gas, electricity, telephone work, etc.), install a manhole that is open around the manhole where the work is to be performed. The surrounding area is surrounded by the same partition frame, and it is clearly urged that manhole construction is being performed on passers-by and passing vehicles, and the above-mentioned partition frame separates the manhole from passers-by. To prevent accidents such as falling.

[0003]

The above-mentioned manhole construction and inspection work are performed even on rainy and windy days.
Measures against rain and wind were also needed. However, in conventional manhole construction and inspection work, it is only about covering the upper surface of the partition frame surrounding the manhole with a waterproof sheet, and rainwater entering from the gap of the waterproof sheet enters the manhole and adversely affects the work. Due to problems, I sometimes stopped working. Also, simply covering the partition frame with a waterproof sheet is weak against wind, and even a relatively weak wind is easily rolled up and blown off, which may hinder construction and inspection work performed in the manhole.

[0004] In view of the above-mentioned conventional circumstances, the present applicant has proposed to use an air tube tent for manhole work as described above. The air tube tent can withstand the wind and rain,
This is because it is easy to store, and when contracted, it is small and can be easily transported.

[0005] However, a conventional air tube tent has a frame structure of the tent by erecting an inflatable and contractible columnar air chamber on a floor sheet laid on the ground.
It is a basic structure in which the surface of this skeleton structure is covered with an outer skin, and most of the large structures are used as emergency evacuation facilities or temporary storage places. Therefore, when the air tube tent having the conventional structure as described above is used for manhole construction or the like, the floor sheet that provides a waterproof function of the tent floor surface serving as an installation surface of the frame structure covers and covers the ground, so that the inside of the tent is It was a hindrance to getting in and out of the manhole from the floor, and it was impossible to apply the conventional air tube tent as it was for manhole construction.

SUMMARY OF THE INVENTION An object of the present invention is to provide a conventional air tube tent with a structure corresponding to work in a manhole and the like.
An object of the present invention is to improve workability such as work in a manhole by the air tube tent.

[0007]

In order to solve the above-mentioned problems, an air tube tent according to the present invention has a floor sheet laid on the ground, and an inflatable and contractible columnar air chamber is formed on the floor sheet. In an air tube tent that is erected to form a framework structure of a tent, and the surface of the framework structure is covered with an outer skin, the floor sheet is partially openable and closable. It is configured to be exposed.

[0008] According to the above means, the floor sheet is laid on the ground on which the manhole and the like are installed, and a framed structure in which a columnar air chamber is erected on the floor sheet is installed. The surface of the skeleton structure is covered with an outer skin, thereby forming an air tube tent forming a room that covers and covers the ground. By laying the floor sheet on the ground,
In addition to functioning as an installation surface on which the frame structure is placed, it also functions as a waterproof layer that covers the floor of the tent and maintains waterproofness. Part of the floor sheet is configured to be openable and closable,
By opening the opening / closing part, the ground or a manhole provided on the ground is exposed on the floor surface in the tent, and the worker can enter and leave the manhole on the ground from here. In addition, by closing the opening / closing section, the waterproof property for preventing rainwater or the like from entering from the opening / closing section is secured, and the opening / closing section functions similarly to a single floor sheet.

In the air tube tent, the floor sheet may be divided into a plurality of sheets, and the divided portion may be configured as an opening / closing portion which can be opened / closed.

In this case, the divided portion of the floor sheet divided into a plurality of sheets becomes an openable and closable portion. By opening the openable portion, the ground or manhole can be exposed at the divided portion of the floor sheet.

[0011] The above-mentioned air tube tent is
The opening / closing section may be configured by opening an opening at an arbitrary position on the floor sheet and covering the opening with a cover sheet so as to be openable / closable.

[0012] In this case, an opening is formed at an arbitrary position of the floor sheet, and the ground or the manhole is exposed from the opening. The opening can be closed and opened by a lid sheet. Therefore, during the operation, the lid sheet is opened to open the opening, and by closing the opening with the lid sheet, it is possible to prevent rainwater or the like from entering the floor sheet from the opening. Water retention can be maintained.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The air tube tent A shown in FIGS. 1 to 3 is to be installed on the ground where the manhole D is installed, for example, when performing construction or inspection work inside the manhole D installed on the road. By
The room surrounding the manhole is configured to prevent the influence of rain and wind during the work.

In this air tube tent A, a frame structure a composed of a combination of columnar air chambers formed in a substantially cylindrical shape is installed on a floor sheet c laid on the ground such as an asphalt road surface. The roof surface and the four sides (front, back, left and right sides) are covered with a tent b (FIG. 1). Frame structure a of air tube tent A
Comprises a pair of columnar air chambers a1 formed in a substantially arch shape, and a space between the two air chambers a1 and a connecting air chamber a2.
The connection is made at 3. The columnar air chamber a1 is formed in a substantially arch shape by using a rubberized cloth or the like, and is configured so that lower portions at both ends of the air chamber a1 and the connecting air chamber a3 function as legs of the frame structure a. (FIGS. 1 and 3).

The two columnar air chambers a1 are opposed to each other at a distance corresponding to the depth of the tent.
The beam air chamber a2 is erected between the central portions of the first and second air conditioners. By connecting the connecting air chambers a3 between the legs a10 at both ends of the two columnar air chambers a1, the two columnar air chambers a1 are integrally connected by the beam air chamber a2 and the connecting air chamber a3. And a self-supporting frame structure a.

On both left and right sides of the beam air chamber a2 connecting the two columnar air chambers a1, connecting rods a5 made of aluminum pipes or the like are provided.
By fixing to the peripheral surface of the first air chamber 1, the space between the ceiling portions on both left and right sides of both columnar air chambers a1 is supported so as not to be widened.
The connecting pipe a5 functions similarly to the beam air chamber a2, and by using the connecting pipe a5, it is possible to reduce the weight while maintaining the strength of the framework structure a. In the frame structure a, one air inlet 13 is provided on the lower side surface of the air chamber a1.
They are provided individually. Further, one safety valve 14 for avoiding excessive pressure in each of the air chambers a1 to a3 is provided for each of the two columnar air chambers a1 (FIG. 3).

The floor sheet c serving as the outer skin of the tent is made of a highly waterproof sheet, for example, a urethane sheet or a rubberized cloth. The floor sheet c laid on the ground is a sheet having a substantially rectangular shape in plan view formed in accordance with the outer dimensions of the frame structure a, and a pair of bases formed with rising portions 21 having appropriate heights along the outer periphery. Sheet c1 and middle sheet c
2 and 3 are joined in parallel (FIGS. 2 and 3).

The base sheet c1 is a rectangular sheet installed at a predetermined interval in the left-right direction, and forms strip-shaped rising portions 21 along the front and rear edges and the outer edge, respectively. Each of the rising portions 21 is vertically raised, and the edges joined at the corners are fastened to each other, thereby forming a substantially frame-shaped three-dimensional sheet having an open upper surface and an inner edge.

The base sheet c1 is laid on the ground at a distance corresponding to the width of the frame structure a. At this time, the manhole D for performing construction or inspection work is disposed between the two base sheets c1 so as to be exposed. In other words, the two base sheets c1 are laid so as to sandwich the manhole D. Next, a middle sheet c2 is placed between the two base sheets c1.
To cover the ground and the manhole D exposed between the two base sheets c1.

A hook-and-loop fastener 22a is provided along both side edges of the rear surface of the middle sheet c2.
On the surface fasteners 22b provided along the inner edges of the front surfaces of both base sheets c1, thereby connecting the left and right base sheets c1 in a single sheet, and being generated between the base sheets c1. It is configured to cover the ground and the manhole D. In the center of the front and rear edges of the middle sheet c2, a rising portion 21 'similar to the rising portion 21 is formed so as to protrude (FIGS. 1 and 2). The rising portion 21 'is for fixing a lower end portion of a curtain b2 for opening and closing an entrance b1 provided in a tent b in front of a tent described later.

On the floor sheet c configured as described above,
When installing the inflated framework structure a, the inflated framework structure a is inflated by injecting air from both injection ports 13 and placed on a floor sheet c laid on the ground at the installation location.
At this time, the lower part of both air chambers a1 of the frame structure a and the two connected air chambers a3 are fitted along the inside of the rising portion 21 formed along the outer periphery of the floor sheet c (FIG. 1). Thus, the rising portions 21 formed along the outer circumference of the floor sheet c with respect to the legs a10 and a20 of the frame structure a.
However, they come into contact with each other so as to surround them. As a result, the legs a10 and a20 are fixed to the installation position on the floor sheet c by the holding force of the rising portion 21, and are held so as not to be displaced from this position. The frame structure of the air tube tent is not limited to the above-described embodiment, and the shape of the ceiling, the number of beam air chambers or the number of connection air chambers, and the like may be arbitrarily changed.

On the other hand, the roof surface of the frame structure a and the periphery 4
As with the floor sheet c, the tent b covering the surface is formed in a shape compatible with the outer shape of the skeleton structure a by bonding a synthetic resin sheet having a high waterproof property such as a urethane sheet or a rubberized cloth. (FIGS. 1 and 2). At the front of the awning b, an opening b1 'serving as an entrance b1 is opened, and the opening b1' can be opened and closed by a film body b2.
The lower portion of the awning b covers the outside of the rising portion 21 of the floor sheet c, thereby preventing rainwater from entering from the joint.

The awning b is placed on a framing structure a set on a floor sheet c, and the awning b is adjusted in shape.
Latches 51 fixed to both right and left sides of the columnar air chamber a1
And the insertion portions 53 opened at the four corners of the tent b. Then, one end of the tension line 52 inserted from each of the insertion portions 53 is connected to the hook metal fitting 51, and the other end of the tension line 52 is connected to a peg, weight, or the like that is driven into the ground. Appropriate tension is applied to the wire 52 to prevent the installed air tube tent from being tilted or moved by the wind. In addition, when the road surface on which the manhole D is installed is paved with asphalt or the like, a method in which the lower end of the above-mentioned tension line 52 is fixed to a weight is suitable.

By installing the air tube tent A on the manhole D as described above, it is possible to form a room for completely surrounding and covering the manhole D for performing construction and inspection work. . When work is performed in the manhole D, the middle sheet c2 of the floor sheet c is used.
As shown in FIG. 1, the manhole D installed on the ground can be exposed at the center of the floor sheet c in the tent room. Then, by opening the cover D1 of the manhole D exposed as described above, it is possible to enter the manhole D from the tent room and perform work. That is, the middle sheet c2 constitutes an opening / closing section E for opening and closing the central portion of the floor sheet c. That is,
The floor sheet c constitutes an installation surface on which the legs of the frame structure a are placed by laying on the ground, and covers the floor surface in the tent to prevent infiltration of rainwater from the ground and its surroundings. Functions as a waterproof layer to prevent.

In the above-described state, since the surroundings of the manhole D are covered with the air tube tent A and work is performed indoors, it is possible to almost completely block rain and wind even in bad weather. Therefore, even in a bad weather day when it rains, the work performed in or around the manhole D can be smoothly performed without minding the rain and wind. It can be performed efficiently.

When the construction and inspection work in the manhole D is completed, the opening of the manhole D is closed by the lid D1, and the middle sheet c is placed at the center of the floor sheet c where the ground is exposed.
By laying and mounting 2, the floor sheet c functions in the same manner as a normal single floor sheet. In this state, the inside of the air tube tent A can be used as a meeting room or a rest room.

Next, the air tube tent A2 shown in FIGS. 4 and 6 will be described. The air tube tent A2 has the same configuration as the air tube tent A shown in FIG. 1, but uses a floor sheet c 'that is divided into two parts from the center to the left and right.

As shown in FIGS. 4 and 6, the floor sheet c 'of the air tube tent A2 is formed so as to be divided into two parts from the center to the left and right. Hook-and-loop fasteners 25b and 25a respectively along the edges
And the left and right sheets c4 and c5 can be joined at the divided portions. Also, the floor sheet c described above is provided on three sides around the left and right sheets c4 and c5.
The rising portion 21 is formed in the same manner as described above.

When laying the floor sheet c 'on the ground, the left and right sheets c4 and c5 are spread and laid on the ground where the manhole D is installed.
5b and 25a are overlapped and locked. At this time, the floor sheet c 'is laid so that the center divided portion is located almost directly above the manhole D (FIG. 6). Next, an inflated skeleton structure a is installed on the floor sheet c ′ laid on the ground as described above, and the surface of the skeleton structure a is further covered with an awning b, as shown in FIGS. And assemble it as an air tube tent A2. The steps of assembling the skeleton structure a and the awning b are exactly the same as those of the air tube tent A described above, and a description thereof will be omitted.

When the work is performed in the air tube tent A2 installed as described above, the hook-and-loop fasteners 25a and 25b at the divisional portion at the center of the floor sheet c 'are released and the left and right sheets c4 and c5 are separated. The division is opened and turned up (FIG. 4). Thereby, both the left and right sheets c4,
The ground and the manhole D can be exposed during c5. The exposed manhole D can be entered and opened for operation by opening the lid D1. That is, in the air tube tent A2 of the present embodiment, the divided portions of the left and right sheets c4 and c5 constitute an opening / closing portion E2 for opening and closing the central portion of the floor sheet c '.

When the work or the like in the manhole D is completed, the opening of the manhole D is closed by the cover D1, then the divided portions of the left and right sheets c4 and c5 are closed, and the hook and loop fastener 2 is closed.
By locking the 5b and 25a together, they are joined together as one floor sheet c '. That is, the floor sheet c 'of the air tube tent A2 functions similarly to the floor sheet c of the air tube tent A.

Next, the air tube tent A3 shown in FIGS. 7 and 8 will be described. The air tube tent A3 also has the same basic structure as the air tube tent A shown in FIG.
Are formed in a single sheet without being divided, and are formed three-dimensionally by raising and forming a rising portion 21 around the periphery. In addition, an opening / closing unit E3 that exposes the manhole D at the center of the floor sheet c ″ is formed by opening an opening 60 that is opened and closed by the lid sheet 61 at the center of the floor sheet c ″. doing.

The opening 60 is formed in the center of the floor sheet c ″ in a square shape capable of exposing the manhole D with a margin, and a lid sheet 61 slightly larger than the opening is provided above the opening 60. . The lid sheet 61 has a handle 63 attached to the upper surface thereof, and one side portion thereof is sewn along one edge around the opening 60 of the floor sheet c '', and is attached and supported so as to open and close like a door. (FIG. 7). A hook-and-loop fastener 62a is sewn along three sides of the lower surface of the lid sheet 61 other than the sewn portions. When the opening 60 is closed by the lid sheet 61, the hook-and-loop fastener 62a is opened. It is configured so as to overlap with and engage with the hook-and-loop fastener 62 b attached along the three sides of the rim portion of the opening 60, and close the opening 60 with the lid sheet 61.

When the floor sheet c ″ is laid on the ground, the floor sheet c ″ is spread on the ground and laid, and the opening at the center is directly above the manhole D installed on the ground. Align to position. A frame structure a is placed on the floor sheet c ″, and the surface of the frame structure a is covered with an awning b to be assembled as an air tube tent A3 (FIG. 7).

When the work is performed in the air tube tent A3 assembled as described above, the lid sheet 61 at the center of the floor sheet c ″ is opened while turning off the engagement of the double-sided fasteners 62a and 62b. Raised, opening 6
Release 0. As a result, the manhole D is exposed in the opening 60, and by opening the cover D1 of the manhole D, it is possible to enter the inside and perform work.

In the opening and closing section described above, the manhole D
The opening 60 for exposing the surface fasteners is
Can be closed by the lid sheet 61 in a state of firmly adhering by using the engagement of the lid sheet 61, so that the waterproofness is good, and even in a heavy rainfall state, by closing the lid sheet 61,
It is possible to effectively stop rainwater that flows along the ground and tries to enter from the opening 60 of the floor sheet c ″.

According to the gist of the present invention, the opening / closing section provided on a part of the floor sheet is not limited to the above-mentioned opening / closing sections E to E3. Any structure may be employed as long as it can expose the ground. For example, a cut may be made in a part of the floor sheet, and the cut may be opened and turned up. In this case, the shape of the cut may be any shape, and the joint edge of the cut may be detachably joined by a surface fastener similarly to the above-described embodiment (not shown).

The air tube tents A to A of the above embodiment
3 has been described based on the case of use for construction and inspection work performed in and around manholes, but for work unrelated to manholes, such as water pipe work or gas pipe work buried underground It can also be used for ground excavation work.

[0039]

As described above, the air tube tent according to the present invention is constructed such that a floor sheet on which an inflatable and contractible skeleton structure is installed can be partially opened and closed, and the ground is exposed to the opening and closing portion of the floor sheet. Because it is constructed so that it can be constructed, it is possible to configure a room that completely surrounds the surroundings of construction sites such as manholes, so it is possible to effectively prevent the effects of rain and wind from the surroundings, Work such as construction and inspection can be performed efficiently. In addition, as described above, by opening the opening / closing part provided on a part of the floor sheet, the ground or the manhole opened on the ground is configured to be exposed to the floor surface in the tent, so that it is configured as described above. In addition, while surrounding the construction site such as a manhole with an air tube tent, it is possible to enter and exit the construction site such as the inside of the manhole from the opening and closing part opened on the floor without any trouble, Construction and inspection work. Further, by closing the opening / closing section of the floor sheet, the waterproof property of the opening / closing section can be ensured, so that the same function as a normal floor sheet can be exhibited.

In the air tube tent according to the second aspect, in which the floor sheet is divided into a plurality of sheets and the divided portion is configured as an openable / closable portion, the divided portion of the floor sheet is opened or turned. By raising, the opening / closing part can be opened / closed easily and large. Further, the floor sheet tends to be large, but by dividing the floor sheet into a plurality of sheets, each floor sheet member can be manufactured in a relatively small unit, and the manufacturing is easy and the air tube tent is collected. At this time, the floor sheet can be disassembled into a plurality of sheets and easily stored.

The air tube tent according to claim 3 is
An opening is opened at an arbitrary position of the floor sheet, and the opening is opened and closed by a cover sheet, thereby forming an opening / closing section that exposes a construction site such as a manhole. , It is possible to open an opening of a size suitable for exposing construction sites such as manholes, so it is possible to provide the minimum necessary opening according to the purpose on the floor sheet surface in the tent Along with
Since the opening can be reliably opened and closed by the lid sheet, the water stopping property in a state where the opening is closed is also good,
In addition, the work of opening and closing the opening can be easily performed.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an air tube tent embodying the present invention.

FIG. 2 is a vertical sectional front view of the air tube tent.

FIG. 3 is an exploded perspective view showing a floor sheet and a frame structure of the air tube tent.

FIG. 4 is a perspective view showing an air tube tent obtained by dividing a floor sheet into two parts by partially cutting out the air tube tent.

FIG. 5 is a vertical sectional front view of the air tube tent.

FIG. 6 is a perspective view showing a floor sheet of the air tube tent.

FIG. 7 is a partially cutaway perspective view showing an air tube tent having a floor sheet whose opening is opened and closed by a lid sheet.

FIG. 8 is a vertical sectional front view of the air tube tent.

[Explanation of symbols]

 A to A3: air tube tent a: framework structure b: tent c to c '' ... floor sheet D: manhole E to E3: opening / closing section 60: opening section 61 ... Lid sheets

Claims (3)

[Claims] 1. A floor sheet is laid on the ground, and inflatable and contractible columnar air chambers are erected on the floor sheet to form a tent frame structure. The surface of the frame structure is covered with an outer skin. An air tube tent which is configured to be able to open and close a part of the floor sheet in a covered air tube tent so that the ground can be exposed to an opening / closing portion of the floor sheet. 2. The air tube tent according to claim 1, wherein the floor sheet is divided into a plurality of sheets, and the divided portion is configured as an openable / closable unit. 3. Opening the floor sheet at an arbitrary position on the floor sheet,
2. The air tube tent according to claim 1, wherein the opening is configured to be openable and closable by a cover sheet.