JPH08199827A - Temporary roof device - Google Patents

Abstract

PURPOSE: To enhance construction properties by providing lifts at temporary poles placed upright while being spaced by a predetermined length, then journalling both ends of each sheet take-up roller to the lifts, rolling long-size sheets onto the rollers, and providing a means for winding the long-size sheets. CONSTITUTION: In a temporary roof device 30, a plurality of temporary poles 1, 2 are expanded upwards as the concrete placement face of a dam A rises with the placement of concrete. Then first and second winches 6, 10 are mounted on both ends of the raised concrete placement face along the stream of the dam. Then first and second sheet take-up rollers 4, 8 are lifted along the poles 1, 2 by lifts. Then concrete placement spaces covered with first and second long-size sheets 5, 9 are formed in front of and behind the poles 1, 2. Therefore, operations can be carried out regardless of bad weather such as rain or snow, the sheets can be wound easily in fine weather, and since the lifts are provided, maintenance of the members can be performed easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary roof device, and more particularly to a temporary roof device that enables concrete pouring work regardless of bad weather such as rainfall and snowfall.

[0002]

2. Description of the Related Art Conventionally, in dam concrete construction for dam construction, especially in dike concrete construction by the RCD method, quality control standards are strict, and it is not possible to place it in bad weather such as rain or snow, so that construction is delayed. There was a problem that the plan had to be changed.

Further, in order to enable concrete pouring even in bad weather, a pillar having wheels at its lower end, a roof frame fixed to and supported by the pillar, and stretched so as to cover the surface of the roof frame. A temporary tent with a membrane material has been proposed.

In such a temporary tent, a predetermined concrete casting area is covered, concrete is poured below the temporary tent, and when the compaction of concrete in this area is completed, wheels are placed on the casting surface. It has been proposed to use it for construction methods, such as moving concrete and placing concrete one after another.

[0005]

However, in order to move the above-mentioned temporary tent, the wheels thereof are made to travel on concrete immediately after being placed, which makes it difficult to travel smoothly, and furthermore, There is a problem that it requires a lot of trouble because it has to be cleaned up.

Further, in the above moving method, it is considered to use a tent having a double membrane (bag) structure filled with an inert gas having a low specific gravity such as helium gas as a measure for reducing the roof's own weight, but the volume is very large. Because it becomes a big thing,
As a measure against the strong wind, it is necessary to load a certain amount of weight, which is not very effective.

The present invention focuses on the above-mentioned problems and solves them. The purpose is to avoid a problem such as traveling on concrete immediately after pouring during concrete pouring work, and to provide a large area. Can cover the rain,
An object of the present invention is to provide a temporary roof device that can perform work regardless of bad weather such as snowfall.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above objects, and its gist is to erected a plurality of temporary columns provided with joints that can be added to the upper ends with a predetermined distance therebetween. Each of these temporary columns is provided with an elevating device that can move up and down separately, and both ends of the first sheet winding roller are rotatably supported by the respective elevating devices of the adjacent temporary columns to bridge between the temporary columns. The first long sheet is wound around the sheet take-up roller of, and the first long sheet is unwound or wound up from each of the first sheet take-up rollers. The temporary roof device is provided with a winding / unwinding means.

Here, in the temporary roof device of the present invention,
Two or more first sheet take-up rollers that extend to the temporary columns adjacent to each other in two directions by erected three or more temporary columns with a joint that can be added to the upper end and are separated by a predetermined length.
In the temporary support column of the temporary roof device pivotally supported by the elevating device, the second sheet winding formed to be longer than the gap between the first long sheets unwound from the two first sheet winding rollers. The roller is axially supported above the first sheet winding roller by the elevating device, and the second long sheet wider than the gap is wound around the second sheet winding roller. It is also possible to provide a second long sheet winding / unwinding means for unwinding or winding up the long sheet.

In the temporary roof apparatus of the present invention, the temporary support columns can be formed by adding a plurality of steel pipes, tower crane posts, H-shaped steel and the like.

The temporary roof apparatus of the present invention is not limited to concrete pouring work, but can be used in various construction processes for various structures other than this. Furthermore, the temporary roof device of the present invention not only covers the upper side of the construction site in the construction work, but also has other uses, for example,
It can be used for temporary stalls, sports training areas, horticultural greenhouses or car exhibitions.

[0012]

The temporary roof device of the present invention uses, for example, a crane at the site when concrete is sequentially placed below the first long sheet and the concrete placing surface rises. Temporary support columns are sequentially added to the upper ends of the plurality of temporary support columns to extend upward, and the lifting device is raised along the temporary support columns, whereby the first sheet winding roller,
Alternatively, by raising the first and second sheet winding rollers, the first long sheet or the lower space covered with the first and second long sheets is always provided around the temporary support. Can be formed.

Further, when there is no need for the space covered with the first long sheet or the first and second long sheets as in the case of fine weather, the first long sheet winding / unwinding means Alternatively, the first long sheet or the first and second long sheets are wound by the first and second long sheet winding / unwinding means.

[0014]

Embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto. Here, FIG. 1 is an overall perspective view showing a state in which the first and second long sheets of the temporary roof apparatus of the present invention are stretched, and FIG. 2 is the first and second long sheets of the temporary roof apparatus of FIG. 3 is a schematic perspective view showing a state in which the length sheet is wound, FIG. 3 is an enlarged front view showing the surroundings of the lifting device in FIG. 2, and FIG. 4 is a periphery of the lifting device when only the first long sheet in FIG. 3 is unwound. 5 is an enlarged front view showing the periphery of the lifting device when the first and second long sheets in FIG. 3 are unrolled, and FIG. 6 is a cross-sectional view taken along the alternate long and short dash line in FIG. is there.

In this embodiment, an example in which the temporary roof device 30 of the present invention is applied to a dam embankment concrete construction site will be described below. The temporary roof device of the present invention shown in FIGS. 1 to 3 is provided with two temporary columns 1 and 2 each standing upright with a predetermined distance between them, and these temporary columns 1 and 2 are individually lifted and lowered. And the three first sheet take-up rollers 4 rotatably supported at both ends by the elevating and lowering devices 3 of the adjoining temporary columns 1 and 2 and bridged between the temporary columns. , A first long sheet 5 wound around the first sheet take-up roller 4, and a first winch for unwinding the first long sheet 5 from each of the first sheet take-up rollers 4. 6 and a first motor 7 for winding the first long sheet 5 around the first sheet winding roller 4 as main parts.

In addition to this main part, the temporary roof device 30
Is a second sheet take-up roller 8 axially supported above the first sheet take-up roller 4 by the elevating device 3 on the two temporary support columns 2 and the second sheet take-up roller 8. A second long sheet 9 that has been turned, a second winch 10 that unwinds the second long sheet 9, and a second long sheet 9 for winding the second long sheet 9 around a second sheet winding roller 8. And a second motor 11.

The temporary columns 1 and 2 are composed of a plurality of steel pipes having a plurality of holes 2b vertically formed at opposing positions on their surfaces. In addition, as concrete is poured into the temporary columns 1 and 2, as the bank A is constructed, the bank 2 is embedded in the bank A as it is. Therefore, a joint 2a (see FIG. 3) is attached to each steel pipe. The joint 2a is provided so that the joint 2a is always added so as to always protrude above the concrete pouring surface of the bank A by a predetermined length. That is, the predetermined length of the temporary columns 1 and 2 is sufficient to secure a working space where concrete can be placed under the roof formed by the first and second long sheets 5 and 9. Let it be the length. Therefore, since the temporary columns do not protrude above the concrete pouring surface more than necessary, the pressure applied by the wind can be reduced.

The lifting device 3 includes a first fixing pin attaching / detaching device 3a and a second fixing device for selectively inserting / removing pins into / from two facing holes 2b provided in the temporary columns 1 and 2. A pin attaching / detaching device 3c and a cylinder 3b, which has one end pivotally attached to the first fixed pin attaching / detaching device 3a by a hinge 3d and the other end pivotally attached to the second fixed pin attaching / detaching device 3c by a hinge 3e, and which is expanded and contracted. Prepare Here, the first and second fixing pin attaching / detaching devices 3a, 3c are provided with temporary support columns 1,
2 is formed in an annular shape so that the steel pipe 2 constituting the same can be fitted therein, and in this annular portion, two of the plurality of holes 2b provided in the temporary support columns 1 and 2 are selected to face each other. Two pins (not shown) that can be inserted and removed physically are provided, and a pin actuating device (not shown) that operates the pins is further provided. In order to raise the elevating device 3 having such a configuration along the temporary support columns 1 or 2, first, the pins of the first fixing pin attaching / detaching device 3a are inserted into the holes 2b, and then the second fixing pin attaching / detaching device 3c. Is pulled out from the hole 2b, the cylinder 3b is contracted, and the pin of the second fixing pin attaching / detaching device 3c is again inserted into the hole 2b above the beginning. Then, conversely, the pin of the first fixing pin attaching / detaching device 3a is pulled out from the hole 2b, and the cylinder 3b is extended while the pin of the second fixing pin attaching / detaching device 3c is inserted into the hole 2b. The pin of one fixed pin attaching / detaching device 3a is inserted into the upper hole 2b. By repeating such an operation, the lifting device 3 can be raised along the temporary support columns 1 or 2. Further, although it is not necessary in the case of constructing a structure by placing concrete from the bottom to the top like the usual dam levee work, the elevating device 3 includes the temporary support columns 1 or 2
It can also be lowered along. That is, first, the pin of the first fixing pin attaching / detaching device 3a is inserted into the hole 2b, the pin of the second fixing pin attaching / detaching device 3c is extracted from the hole 2b, the cylinder 3b is extended, and the second fixing device is again attached. The pin of the pin attaching / detaching device 3c is inserted into the hole 2b below the first. Then, conversely, the first fixing pin attaching / detaching device 3a
Of the second fixing pin attaching / detaching device 3c with the pin of the second fixing pin attaching / detaching device 3c inserted into the hole 2b.
b is contracted, and the pin of the first fixing pin attaching / detaching device 3a is inserted into the lower hole 2b. If you repeat this operation,
The elevating device 3 can be lowered along the temporary columns 1 or 2. Therefore, since the elevating device 3 has a structure capable of not only raising but also lowering, hoisting work by a crane or the like at the time of roof dismantling is small, and it can be used for other than dam dam construction. For example, it can be used as a temporary stall, a sports rain training field, a horticultural greenhouse, or an automobile exhibition site.

The first sheet winding roller 4 is shown in FIG.
As shown in, between the two temporary columns 1 at both ends and the two temporary columns 2 adjacent to each other, two temporary columns are inserted so that each temporary column is sandwiched on both sides of the bank A in the water flow direction. Each of them is installed in parallel, and two pieces are also installed in parallel between the temporary support columns 2 and 2, so that a total of six temporary support columns 1 and 2 are installed.
Bridge between them. In this way, by laying each two temporary columns in parallel so as to sandwich each temporary column between the temporary columns, the first sheet 5 wound around the first sheet winding roller 4 is provided. Can be unrolled in both directions as shown in FIGS. 1 and 6 to form a gable-shaped roof. Further, in each of the first sheet take-up rollers 4, a gear box (not shown) provided on the rotation shaft 4a thereof is provided on the ring portion of the first fixed pin attaching / detaching device 3a. Is rotatably supported in a state of meshing with a gear (not shown) of the above, and a first motor 7 connected to the gear box 12 is provided in the annular portion.

The first elongate sheet 5 wound around the first sheet take-up roller 4 has a rod-shaped body 13 such as a steel rod fixed over the entire length of the lower end side thereof. One end of the wire rope 14 is connected at a plurality of positions, and the other end of the wire rope 14 is wound around a plurality of first winches 6 fixed to both ends of the bank A in the water flow direction. In addition, the length of the first long sheet 5 is, for example, when the temporary columns 1 and 2 are erected at the central portion of the bank A in the water flow direction, the end sides of the respective first long sheets 5 are , A length that can reach up to the water flow direction end of the dam body already made of concrete.

Therefore, after the gear of the first winch 6 is released to allow the wire rope 14 to be unwound freely, the first motor 7 is rotated and its rotational force is transmitted through the gear in the gear box 12. When transmitted to the rotating shaft 4a, the first sheet winding roller 4 rotates and the first long sheet 5 can be wound. On the contrary, when the gear in the gear box 12 is released and the first sheet take-up roller 4 is freely rotated, the wire rope 14 is wound up by the first winch 6 and the wire rope 14 is wound. The tension force of 14 is evenly transmitted to the long sheet 5 via the rod-shaped body 13, and the long sheet 5 can be unwound from the first sheet winding roller 4. Then, after winding for a predetermined length, the first winch 6 is once stopped and the gears of the gear box 12 are meshed with each other, and then the first winch 6 applies tension to the long sheet 5 for a predetermined length again. If given, the first long sheet 5 can be stretched without causing slack or wrinkles.

The second sheet winding roller 8 is shown in FIG.
As shown in, each of the two temporary columns 2
Two pieces each are provided in parallel with the first sheet winding roller 4 so as to sandwich the temporary support columns 2 on both sides of the bank A in the water flow direction. The second sheet take-up roller 8 has a gap between the first long sheet 5 unwound from each of the two first sheet take-up rollers extending to the temporary columns 1 and 2 adjacent in two directions. It is formed longer than C (see FIG. 4). Further, as shown in FIGS. 3 and 6, in the second sheet winding roller 8, the gear (not shown) provided on the rotation shaft 8a of the second sheet winding roller 8 is placed on the first fixing pin attaching / detaching device 3a. The roller support members 15a and 15b are fixedly supported on both ends thereof by gears (not shown) of a gear box 17 and are axially supported in a meshed state. It is connected.

Here, the roller supporting members 15a and 15b
The tubular body portion 15b formed in a tubular shape is slidably fitted into the temporary support column 2 and fixed on the first fixing pin attaching / detaching device 3a, and goes straight in the axial direction of the tubular body portion 15b. The arm portion 15a extending in both directions is formed integrally with the tubular body portion 15b, and the arm portion 15a is formed in the same direction as the first sheet winding roller 4.

The second long sheet 9 wound around the second sheet take-up roller 8 is formed wider than the gap C, and like the first long sheet 5, the second long sheet 9 is formed. The rod-shaped body 19 is fixed over the entire length of the lower end side, one end of the wire rope 22 is connected to the rod-shaped body 19 at a plurality of points, and the other end of the wire rope 22 is connected to both ends of the bank A in the water flow direction. It winds around the some fixed 2nd winch 10. Also,
The length of the second long sheet 9 is set to a length that can reach the end of the bank in the water flow direction, like the first long sheet 5. The unwinding, tensioning or winding of the second long sheet 9 having the above-described structure is performed by the first long sheet 5
Similarly to the second motor 11, the gear box 17, the second winch 10, the wire rope 22, and the rod-shaped body 19.
Can be done by.

As shown in FIGS. 1, 3 and 6,
The first covering member 20 having a width wider than the distance between the first sheet winding rollers 4 covers the space between the two first sheet winding rollers 4 arranged in parallel.
Above the roller support members 15a and 15b, and is extended between the four temporary support columns 1 and 2 so as to extend from the tubular body portion 15b of the roller support members 15a and 15b. With this first covering member 20,
From between the two first sheet winding rollers 4 in parallel,
It is possible to prevent rainwater and snow from falling onto the concrete pouring surface. Here, in order to fix one end of the first cover member 20, the roller support member 15 is also provided on the first fixing pin attaching / detaching device 3a of the two temporary columns 1 in the same manner as the temporary column 2.
a and 15b are arranged in series.

Further, as shown in FIGS. 1, 3 and 6,
The second covering member 21a, which is wider than this interval and longer than the gap C of the first long sheet, covers the space between the two second sheet winding rollers 8 arranged in parallel to each other. Above the winding roller 8, it is supported by a cover support member 21b in the same direction as the second sheet winding roller 8. The second covering member 21b can prevent rainwater, snow, or the like from pouring on the concrete placing surface through the gap C from between the two second sheet winding rollers 8 arranged in parallel.

The temporary roof device 30 having the above structure is
As the concrete is sequentially cast and the concrete casting surface of the bank A rises, the temporary supports 1 and 2 are added to the upper ends while the lower ends of the plurality of temporary supports 1 and 2 remain buried in the concrete. The first and second winches 6 and 10 extending upward are sequentially re-arranged at both ends of the raised concrete placing surface in the water flow direction of the bank, and at the same time, by the lifting device 3 along the temporary columns 1 and 2. The first and second sheet winding rollers 4 and 8 are raised so that the first and second long sheets 5 and 9 are always provided before and after the temporary columns 1 and 2.
To be able to form enough concrete pouring space covered with.

[0028]

EFFECTS OF THE INVENTION The temporary roof device of the present invention, for example, when concrete is sequentially placed around a plurality of temporary columns that are erected at a predetermined distance from each other and the construction surface rises,
Temporary support columns are added to the upper end to extend upward, and the elevating device is raised along the temporary support columns so that the first elongate sheet or the first and second elongate sheets are always provided around the temporary support columns. Since a certain work space covered with a sheet can be secured, there is no inconvenience such as moving the equipment on concrete immediately after placing, and work can be performed regardless of bad weather such as rainfall or snowfall. You can

Further, the temporary roof device of the present invention winds the first long sheet around the first sheet take-up roller, and unwinds the first long sheet from the first sheet take-up roller. In addition, since the first long sheet winding / unwinding device for winding the first long sheet is provided, it is possible to easily wind the first long sheet when a temporary roof is not needed, such as in fine weather. On the contrary, when the weather turns bad, the first long sheet can be unrolled immediately to cover the required portion.

Further, in the temporary roof device of the present invention, in addition to the constitution of the first sheet winding roller, the first long sheet and the second long sheet winding and unwinding means, the first sheet winding roller is provided. A second sheet take-up roller axially supported above the take-up roller, a second long sheet wound around the second sheet take-up roller, and unwinding the second long sheet, Alternatively, since the second long sheet winding / unwinding means for winding is provided, it is possible to further improve the effect of preventing rainwater and snow from pouring into the space below the first and second long sheets.

Furthermore, since the temporary roof device of the present invention is provided with a lifting device that can be raised and lowered along the temporary columns, it is possible to freely use the sheet winding roller, the long sheet, the long sheet winding and unwinding means, and the like. Therefore, it is possible to easily perform maintenance of these members, and it is possible to prevent the members from being blown off by a strong wind such as a typhoon or the temporary support columns from falling.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a state in which first and second long sheets of a temporary roof device of the present invention are stretched.

FIG. 2 is a schematic perspective view showing a state in which the first and second long sheets of the temporary roof device of FIG. 1 are wound up.

FIG. 3 is an enlarged front view showing the periphery of the lifting device in FIG.

FIG. 4 is an enlarged front view showing the periphery of the lifting device when only the first long sheet in FIG. 3 is unwound.

5 is an enlarged front view showing the periphery of the lifting device when the first and second long sheets in FIG. 3 are unwound. FIG.

6 is a cross-sectional view taken along alternate long and short dash line in FIG.

[Explanation of symbols]

1, 2 Temporary support columns 3 Lifting device 4 First sheet winding roller 5 First long sheet 6 First winch (First long sheet winding and unwinding means) 7 First motor (first Long sheet winding / unwinding means) 8 Second sheet winding roller 9 Second long sheet 10 Second winch (Second long sheet winding / unwinding means) 11 Second motor (second Of long sheet winding and unwinding means) 14 Wire rope (first long sheet winding and unwinding means) 22 Wire rope (second long sheet winding and unwinding means) 30 Temporary roof device

Claims (2)

[Claims] 1. A plurality of temporary columns provided with joints that can be added to the upper end at a predetermined distance from each other are erected, and a lifting device that can be raised and lowered is separately provided on each of the temporary columns. Both ends of the first sheet take-up roller are axially supported by the lifting device and are bridged between the temporary columns, and the first long sheet is wound around the first sheet take-up roller. A temporary roof device comprising a first long sheet winding / unwinding unit that winds or winds the first long sheet on each of the winding rollers. 2. Two of the first sheet windings, each of which is provided with a joint which is spaced apart by a predetermined length and has a joint that can be added to the upper end of the temporary column, is extended three or more upright and extends to the temporary columns that are adjacent in two directions. In the temporary support column of the temporary roof device pivotally supported by the lifting device, the take-up roller is formed to be longer than the gap between the first long sheets unwound from the two first sheet take-up rollers. The sheet take-up roller is rotatably supported above the first sheet take-up roller by the elevating device, and a second long sheet wider than the gap is wound around the second sheet take-up roller. The temporary roof apparatus according to claim 1, further comprising a second long sheet winding / unwinding means for unwinding or winding up the second long sheet.