JP2987321B2 - Seat opening and closing mechanism in a temporary tent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is used in temporary tents or temporary warehouses used for events such as exhibitions and other temporary tents used to prevent the weather and direct sunlight on construction sites of civil engineering and architectural structures. A temporary tent or a temporary roof, and more specifically, a sheet stretched over the tent or the roof is partially opened and closed so that a heavy object suspended by a crane or the like can be directly loaded or unloaded from the roof surface into the tent. The present invention relates to a roof sheet opening / closing mechanism in a tent.

[0002]

2. Description of the Related Art At a construction site of a building in civil engineering construction, a lightweight temporary tent of an assembling type or a temporary roof of an air-expandable type (hereinafter, referred to as "the roof") in order to maintain a good working environment.
The area is covered with a temporary tent (to be collectively referred to as a temporary tent), thereby avoiding wind and rain and direct sunlight. Even at a construction site covered with a temporary tent, various heavy equipment is loaded into the tent via a crane, etc.
Or you need to carry it out. In order to satisfy such a request, the roof sheet is moved in the longitudinal direction, a part of the sheet covering the roof surface is removed, opened, and the above-mentioned luggage is loaded and unloaded from the roof surface via a crane or the like. After the predetermined work is completed, the roof sheet is again moved in the reverse direction to cover the roof surface with the sheet (Japanese Patent Laid-Open No. 6-3306).
No. 39).

[0003]

However, the conventional type has the following problems. That is, since the roof sheet is opened and closed via two winch mechanisms provided separately for both ends of the sheet, the equipment cost increases, and furthermore, it is necessary to simultaneously operate the winches on both ends of the sheet. Therefore, it takes time and effort to provide wiring that can be operated electrically synchronously, and further, special consideration is required in terms of mounting space.

[0004]

Means for Solving the Problems Here, the present invention provides:
It is an object of the present invention to provide a new roof sheet opening / closing method capable of solving the problems associated with the conventional type. That is, this is a simple type seat opening / closing device which is effective when applied to a temporary tent having a relatively high eave height, in which a winch mechanism is provided only on one outer wall side of both side walls constituting the tent, and the other is provided. A counterweight mechanism is incorporated in the side wall, so that the roof sheet can be opened and closed only by operating the winch mechanism.

More specifically, in the temporary tent according to the present invention, a guide groove is formed directly or indirectly on a long roof material defining a sloped surface of a roof along a longitudinal direction of the member. In a temporary tent in which a sheet covering the roof surface is extended or opened through the guide groove after forming the roof surface, a roof sheet is provided on one of the outer side walls of the tent sandwiching the roof surface. A winch mechanism for winding or unwinding the edge of the roof sheet is attached, and a counterweight mechanism for constantly pulling down the edge of the roof sheet is attached to the other side wall side to loosen the winch. When the counterweight acts to pull the sheet toward the weight side, and when the sheet is operated to wind the winch, the sheet winches against the pulling force of the weight. In which were configured to move.

In the practice, a roof material is used in which a rectangular material having a hollow cross-sectional shape is used, and a guide groove which opens outward at at least two corners of the rectangular material is formed integrally with the rectangular material. Preferably, the wire rope connected to the edge of the roof sheet attached to the roofing material is pulled up by a winding drum forming a part of the winch, or the roof sheet is loosened by loosening the winch. To open and close the roof. Thus, according to the present invention, the degree of opening / closing of the roof area in the temporary tent can be variably maintained, and the roof sheet positioned directly above the place where heavy objects are to be loaded or unloaded is mounted on the winch mechanism and the counterweight. The device allows the desired opening to be maintained and opened, thereby enabling direct unloading or unloading via an outdoor crane. After the cargo handling operation is completed, the roof sheet is moved in the opposite direction to restore the roof sheet so as to cover the roof surface, thereby protecting the work site from wind, rain, heat, and the like.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of the entire temporary tent incorporating the opening / closing mechanism of the present invention. As an example, a pillar 11 which is erected vertically and a wedge-shaped frame 12 having a mountain-shaped slope extending thereover are equally spaced. 5 frames, and the roof sheet 13 is stretched over the four spans formed thereby to form a continuous temporary tent. Although the figure shows a frame with a mountain slope, the frame may be a single slope, or may be used for a roof with no slope in some cases. Further, in the drawing, a roof sheet is stretched over every other span, and a part of the roof sheet is opened for each of two adjacent spans.

Hereinafter, a specific example of a mechanism for opening and closing a roof sheet will be described. In the present invention, the roof material 12a of the end face frame 12 is made of, for example, a square material made of an aluminum alloy as shown in FIG. As shown in the figure, the square member is formed of a square tube having a hollow inside, and a guide groove 14 that opens outward is formed at four corners. On the other hand, as is clear from the enlarged view of FIG. 4, a retaining member 15 having a circular cross section is inserted into this guide groove.
In this case, after the ears of the roof sheet 13 are wound around the retaining member 15, the one integrated with the roof sheet 13 is loosely inserted into the groove 14. Incidentally, the roof material does not necessarily have to be the square material as described above, and a roof material 12b having a circular cross section as shown in FIG. 6 may be used. Even in this case, it is necessary to integrally form the guide grooves 14 on both wings or only one side of the roofing material.

Next, the fitting relationship between the roof material 12a and the roof sheet 13 will be described with reference to FIGS. 3 and 4A. As described above, rope-shaped retaining members 15 are attached to the both ears along the longitudinal direction of the roof sheet 13 with a suture joint. On the other hand, since the guide groove 14 is opened outward at the upper corner of the rectangular aluminum alloy square member 12a having a rectangular hollow section, the retaining member 15 is inserted into the groove along with both ears of the sheet. Let it. Then, the fitting of the retaining member and the guide groove 14 suppresses the bending of the roof sheet 13, so that rainwater does not accumulate even on a gentle roof slope.
As the roof sheet 13, as an example, a polyester blended canvas whose surface is coated with polyvinyl chloride and which is waterproofed and flameproofed and has a thickness of about 0.5 to 0.7 mm is used. As shown in the figure, the material of the retaining member 15 is not particularly limited as long as it is a rope-shaped member having a circular cross section and flexibility. 4A, the portion where the ear portion of the sheet 13 is wrapped around and fixed to the retaining member 15 is maintained in a loosely fitted state so as to be able to move freely in the guide groove 14 as is apparent from FIG. 4A. doing. FIG. 4B
Shows a modification of the retaining material, and the roof sheet 13
This is the case where both ears are sandwiched between the edge pieces 15b of the flexible synthetic resin retaining member 15a and adhered.

Next, a modification of the guide groove 14 for guiding the movement of the roof sheet 13 will be described with reference to FIG. In this case, the rigidity of the roofing material
The guide member 12c having an eyeglass-shaped cross-section is fixed thereon with bolts 18. Thereafter, the retaining member 15 is inserted together with the sheet through the groove 14b formed in the member 12c to allow the sheet to slide in the groove.

The details of the winch mechanism shown in FIGS. As shown, a wire rope 20 is attached to one edge of the roof sheet 13 to stretch it.
The rope is wound around the take-up drum 22 of the winch 19, and the winch is operated as necessary to pull the roof sheet through the rope, whereby the sheet is provided on the roofing material 12a. It is guided by the guide groove 14 and moves parallel to the roof surface to cover the roof surface, thereby enabling rain curing. That is, two hooks 17 are attached to one edge of the roof sheet 13, and a wire rope 20 is connected to each of the hooks 17 by the lock 21. Then, the rope 20 is wound around a winding drum 22 and the drum 22 is
Drive. The clutch is preferably an electromagnetic clutch, and transmits the rotation of the motor 23 to the winding drum 22 at the time of winding, and disconnects the output shaft of the motor 23 from the rotating shaft of the winding drum 22 at the time of rewinding. Electrical control The above configuration describes the winding mechanism and operation of the wire rope when pulling up the roof sheet. Next, the configuration and operation of the rewinding side will be described.

When rewinding the roof sheet 13 (when removing the sheet from the roof surface), the winch mechanism is driven via a clutch device or the like as shown in FIG. 1 and as shown in FIGS. To release. At this time, the counterweight device 30 at the edge of the sheet located on the opposite side of the winch side acts to pull the sheet in that direction, whereby the roof sheet comes off the roof surface and becomes open. This point will be described in more detail based on the embodiment shown in FIGS. In FIG.
Is a temporary framework scaffold, which is piled up to an appropriate height as shown in the figure, and on which a support 11 is fixedly mounted.
This is an example in which a roof surface is formed by straddling a roof sheet, and then the roof sheet 13 is stretched via guide grooves formed in a roof material that is a component of the frame. That is, a winch mechanism indicated by reference numeral 19 is mounted on one of the framework scaffolds 40a in the temporary tent, and the counterweight device 30 is incorporated on the outer surface of the other scaffold 40b.

That is, the wire rope 20a is connected to the edge of the roof sheet 13 in the same manner as described above, and the counterweight 41 is hung at the end of the rope. 4
Reference numeral 2 denotes a guide rail for the counterweight, and reference numeral 42a denotes a stopper. In addition, the above-mentioned weight moves up and down along the guide rail with the mounting position of the stopper as a limit. Reference numeral 43 denotes a pulley for guiding the wire rope 20, and reference numeral 44 denotes a roll bar for guiding a roof sheet, which is mounted near a boundary between a roof surface and a wall surface. A winch mechanism having the same configuration as that shown in FIGS. 3 and 4 is mounted below the mounting surface of the bar.

The opening and closing operation of the roof sheet 13 according to the present invention will be described. When the roof sheet 13 is stretched as described above, the motor 23 is driven to operate the winding drum 22 so that the wire rope 20 is wound. At this time, since the roof sheet 13 is pulled by the rope, the retaining member 15 fixed to the both ears of the sheet is also guided by the guide formed on the roof material 12a or 12b by the pulling force of the sheet. The roof surface is covered with a sheet by sliding inside the groove 14. In other words, when the winch 19 is operated by electrically operating the motor, the roof sheet 13 moves along the guide groove of the roofing material so as to cover the roof surface. When reaching the desired position, the drive of the motor may be stopped there. Thus, it becomes possible to cover the required roof surface. When a motor with a clutch is used, it is electrically controlled so that the electromagnetic clutch of the motor 23 is engaged or disengaged.
2, the wire rope 20 is wound up, and if necessary, the drum 22 is freely rotated to rewind the roof sheet 13.

Once the stretched roof sheet is released, it is only necessary to freely rotate the drum 22 on which the wire rope 20 has been wound. In that case, a wire weight 20a attached to the roof sheet to be opened has a counterweight mechanism 4 provided on the outer wall surface on the opposite side.
1 and 42 are operated, and the weight of the weight lowers the free sheet. When the edge of the sheet reaches a desired position, a braking device (not shown) built in the winch mechanism is used. ) To stop the movement of the sheet.

In the present invention, the operation of raising and lowering the counterweight is restricted by the height of the side wall surface of the temporary tent, and is not suitable for a temporary tent having a low eave height.
Therefore, as shown in FIG. 7, it is preferably used when the eave height L of the temporary tent is equal to or more than half the roof span S (or the roof slope length 1: small letter L).

[0017]

According to the present invention, any part of the roof sheet constituting the temporary roof can be easily opened, so that a heavy object can be directly loaded or unloaded by an outdoor crane, and easy after work. The roof can be restored by closing the roof sheet. Also, unlike the conventional type, there is no need to install separate roof sheet drive mechanisms on both side walls of the temporary tent, and a winch mechanism is provided in only one of them, and a non-powered counterweight device is incorporated in the other. The cost is low, and the equipment cost is low, and the winding resistance is low, so it can be wound or unwound with a constant light force, so that it can be applied to a large span temporary tent. Demonstrate.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entirety of a temporary roof incorporating a roof sheet opening / closing mechanism according to the present invention.

FIG. 2 is a sectional view showing an example of a winch mechanism which is a part of the opening and closing mechanism.

FIG. 3 is a partially enlarged perspective view showing a mounting relationship between a roof material and a roof sheet.

FIG. 4A is a cross-sectional view showing a fitting between a roof material and a roof sheet, and FIG. 4B is a cross-sectional view showing another embodiment of the roof sheet, particularly showing enlarged ears.

FIG. 5 is a cross-sectional view showing another embodiment of the roofing material, and shows a state in which the edge of the roof sheet is engaged in the guide groove.

FIG. 6 is a perspective view showing an example in which a moving guide member of a roof sheet and a roof material are configured by different members.

FIG. 7 is a front view of the case where the side wall of the temporary tent is formed of a framed scaffold.

FIG. 8 is a side view of the same part.

[Explanation of symbols]

 12 Wife frame 12a, 12b Roof material 13 Roof sheet 14 Guide groove 15 Retaining material 17 Hook 19 Winch mechanism 20, 20a Wire rope 21 Lock 22 Winding drum 23 Motor 30 Counterweight device 40, 40a, 40b Framed scaffold 41 Weight Weight 42 Guide rail 42a Stopper 43 Guide pulley

Claims (3)

(57) [Claims] 1. A guide groove is formed on at least a side surface of a guide member integrally formed with a roof material or a guide member separately attached along a longitudinal direction of the long roof material,
And in a temporary tent in which the roof sheet is stretched by inserting a rope-shaped retaining material attached to both ears of the roof sheet into the guide groove, at one end edge in the longitudinal direction of the roof sheet. A mechanism for opening and closing a sheet in a temporary tent, wherein a winch mechanism is connected via a wire rope, and a pulling rope of a counterweight device is connected to the other edge. 2. Using a square material having a hollow cross-sectional shape,
2. The seat opening / closing mechanism according to claim 1, wherein a roof material having a guide groove that opens outward at least at two or more corners of the square material is used. 3. A mechanism for opening and closing a sheet in a temporary tent according to claim 1, wherein a motor with a clutch and a braking device are attached to a winding drum constituting a winch mechanism.