JPH07229229A - Opening and shutting roof structure - Google Patents

Abstract

PURPOSE:To reduce the load of a fan-shaped roof acting on trucks by using air-pressure to levitate the fan-shaped roof on a movable side before the fan- shaped roof is rotated to open and shut a dome-like roof. CONSTITUTION:A plurality of motor trucks 16 are mounted to the circumferential direction of the lower side of the circumference of a movable roof 14. Vertical wheels 26 of the trucks 16 are brought into contact with the upper surface of a floor track 22 to roll and, at the same time, horizontal wheels 28 are brought into contact with the inside of a wall surface track 24 and is rolled. An air-pressure levitation mechanism 30 is provided on the circumference providing the motor trucks 16 to the lower side of the circumference of the movable roof 14 in a state to hold it between a plurality of motor trucks 16. The air-pressure levitation mechanism 30 is operated in the case the motor trucks 16 are driven to rotate the movable roof 14, and air-pressure levitation force is given to the movable roof 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable roof structure capable of opening and closing a roof portion by relatively rotating a plurality of fan-shaped roofs.

[0002]

2. Description of the Related Art A retractable roof structure of this kind is used for a dome roof of a large stadium, and is disclosed in, for example, Japanese Patent Laid-Open No. 1-2689.
36 (E04B 1/32), JP-A-2-85
No. 438 (E04B 1/342), JP-A-2-
No. 210130 (E04B1 / 32) and the like are disclosed.

That is, in the retractable roof structure shown in (1), at least one of the two fan-shaped roofs divided into two semicircles moves on a track laid along the outer circumference of the dome via a carriage or the like. It is possible, and by moving on this orbit, the two fan-shaped roofs relatively rotate around the top of the dome to open and close the roof.

[0004]

However, in such a conventional retractable roof structure, when the movable fan-shaped roof rotates around the top of the dome via a carriage or the like, the load on the fan-shaped roof is increased. It is necessary to move with everything acting on the dolly. Therefore, there is a problem that the frictional force between the truck and the track becomes significantly large, the driving force for driving the truck becomes large, and the truck becomes large.

In view of the above-mentioned conventional problems, the present invention, when rotating the fan-shaped roof to open and close the dome-shaped roof,
An object of the present invention is to provide a retractable roof structure in which the movable fan-shaped roof is floated by air pressure to reduce the load of the fan-shaped roof acting on the carriage.

[0006]

In order to achieve the above object, the present invention comprises a plurality of fan-shaped roofs that cover the upper side of an annular wall body that surrounds the outer circumference, and these fan-shaped roofs are provided with a central portion of the annular wall body. In a retractable roof structure which is opened and closed by relatively rotating as a center, a trolley provided on the movable fan-shaped roof is rolled on an annular orbit arranged on the floor, and the fan-shaped roof is also rotated. And a floor surface are provided with a pneumatic levitation mechanism in parallel with the dolly, and when the fan-shaped roof is rotated, the pneumatic levitation mechanism is activated to apply a levitation force to the fan-shaped roof, so that the fan-shaped roof acts on the dolly. Use a structure that reduces the load.

[0007]

With the above structure, in the retractable roof structure of the present invention, the pneumatic levitation mechanism is provided in parallel with the trolley of the movable fan-shaped roof, and the pneumatic levitation mechanism is operated when the fan-shaped roof is rotated. Since the levitation force is applied to the roof, the levitation force reduces the load of the fan-shaped roof acting on the trolley, and the frictional force between the track and the track can be reduced. Therefore, it is possible to reduce the driving force required for the dolly when the fan-shaped roof is rotated, and it is possible to reduce the size of the dolly.

[0008]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 to 6 show one embodiment of a retractable roof structure according to the present invention, FIG. 1 is a plan view showing the entire roof structure, FIG. 2 is a front view showing the entire roof structure, and FIG. 3 is a fan-shaped roof support. FIG. 4 is an enlarged view of an essential part showing a portion, and FIG.
5 is a sectional view taken along line BB in FIG. 3, and FIG. 6 is an enlarged sectional view of the pneumatic levitation mechanism.

That is, in the openable roof structure of this embodiment, as shown in FIGS. 1 and 2, the annular wall body 1 surrounding the outer periphery is formed.
It is constituted by covering the upper side of 0 with a fixed roof 12 and a movable roof 14 as a fan-shaped roof in a dome shape. The fixed roof 12 and the movable roof 14 are each formed in a semi-circular shape, the outer peripheral portion of the fixed roof 12 is fixed to the upper end portion of the annular wall body 10, and the outer peripheral portion of the movable roof 14 is formed in the annular wall body 10. It is possible to move relative to.

The movable roof 14 is formed as a paragraph from the fixed roof 12 so as to be able to go under the fixed roof 12, and when the movable roof 14 is closed as shown in FIG. Half-end 14 of roof 14
a is overlapped with the half end 12a of the fixed roof 12. A plurality of power carriages 16 are attached to the lower side of the outer peripheral portion of the movable roof 14, and the movable roof 14 is rotated about the central portion O of the annular wall body 10 by driving these power carriages 16.

The floor surface 18 near the annular wall body 10 is provided with a floor surface track 20 formed in an annular shape along the inside of the annular wall body 10, while the inside of the annular wall body 10 is surrounded by the annular wall. An annular wall surface track 22 is provided along the body 10. Further, the floor surface track 20 has an outer circumference track 20a and an inner circumference track 20b which are concentrically arranged at appropriate intervals.
And two.

The trolley 16 has vertical wheels 24 which are brought into contact with the upper surface of the floor surface track 20 to roll, and the wall surface track 22.
And a horizontal wheel 26 that abuts on the inner surface of the wheel and rolls. The vertical wheel 24 includes a pair of wheels 24a and 24b that roll on the outer peripheral track 20a and the inner peripheral track 20b, and at least one of the wheels 24a and 24b,
The movable roof 14 is moved to the central portion O by transmitting the rotational driving force of a power generating means (for example, an electric motor) (not shown)
It is designed to be rotated around.

Here, in the present embodiment, the air as a pneumatic levitation mechanism is provided on the lower side of the outer peripheral portion of the movable roof 14 on the radius where the power carriage 16 is provided and sandwiched between the plurality of power carriages 16. Casters 30 are provided. As shown in FIG. 6, the air caster 30 is provided with a disc-shaped support plate 32 having a supporting portion 32a vertically provided at the center and having a reverse convex cross section. The support plate 32 is shown in FIG. Thus, it is attached to the lower side of the movable roof 14 via the columns 34. Incidentally, the support plate board 3
2 is 1 arranged along the circumferential direction of the movable roof 14.
It is provided as a set.

The support 32 of the support plate 32
A donut-shaped truss bag 36 is provided on the peripheral portion of a, and the upper side of these truss bags 36 is the support plate 3
2 is attached to the support portion 32 from this attachment portion.
A compressed air intake 36a is formed on the upper side of the truss bag 36 near the side a. On the other hand, a plurality of supply pipes 38 are provided inside the supporting portion 32a of the support plate 32 so as to be located inside the portion where the compressed air intake 36a is formed. Supplied.

By the way, the air casters 30 have a control mechanism 4 corresponding to the number of support plate bases 32.
0 is provided, and the supply pipe 3 is controlled by the control mechanism 40.
The amount of compressed air supplied from 8 and the supply timing are controlled. In this embodiment, when the movable roof 14 is about to be rotated, the air caster 30 is operated, and compressed air is blown to the base 34 disposed between the floor tracks 20a and 20b to move the movable roof 14 to the movable roof 14. It is designed to give levitation force by air pressure.

In the open / close type roof structure of this embodiment having the above-mentioned structure, in order to open the roof from the closed state shown in FIG. 1, the drive carriage 16 is driven to move the movable roof 14 around the dome top O. Rotate in one direction. At this time, the vertical wheel 2
4 rolls on the upper surface of the floor track 20, and the horizontal wheels 2
6 rolls on the inner surface of the wall surface track 22. When closing the roof, the drive carriage 16 is driven to rotate the movable roof 14 in the other direction, contrary to the case of opening the roof.

By the way, in the present embodiment, when the movable roof 14 is rotated to open and close the roof, the air casters 30 are operated and a pneumatic levitation force is applied to the movable roof 14, so that the movable carriage 16 acts on the movable carriage 16. The load on the roof 14 is reduced, and the frictional force between the roof 14 and the floor track 20 can be significantly reduced.

That is, in the air caster 30, compressed air is not supplied from the supply pipe 38 in a stationary state where the movable roof 14 is not rotated, and in this state, the support portion 32a is attached to the base 34 with the truss bag 36 crushed. Is installed. When the movable roof 14 is about to rotate, the supply pipe 38
The compressed air is supplied from the compressed air, and a part of the compressed air is introduced from the compressed air inlet 36a of the truss bag 36, and the truss bag 36 expands to push up the support plate base 32, and thus the movable roof 14. At the same time, the rest of the compressed air supplied from the supply pipe 38 is supplied to the inside of the doughnut-shaped truss bag 36 to increase the pressure, and is discharged to the outside through the lower side of the truss bag 36. . At this time, a slight gap is provided between the truss bag 36 and the base 34 to float, and the load of the movable roof 14 acting on the drive carriage 16 is reduced. Therefore, the frictional force generated between the drive carriage 16 and the floor track 20 when the movable roof 14 is rotated can be significantly reduced, and the drive force required for the drive carriage 16 can be significantly reduced. The dolly 16 can be downsized.

In this embodiment, the floor track 20 is composed of two outer tracks 20a and an inner track 20 which are concentrically arranged.
b, and a pair of wheels 24a, 24 which are formed by the vertical wheel 24 and roll on the outer peripheral track 20a and the inner peripheral track 20b.
Since the wheel b is provided, the load can be further distributed by the wheels 24a and 24b.

Further, although the present embodiment discloses the case where the movable roof 14 is formed in a semicircular shape by dividing the dome-shaped roof into two, the present invention is not limited to this, and the dome-shaped roof is divided into three or more fan-shaped roofs. However, it goes without saying that the present invention can be applied.

[0021]

As described above, in the retractable roof structure according to the present invention, the pneumatic levitation mechanism is provided in parallel with the carriage of the movable fan-shaped roof, and the pneumatic levitation mechanism is provided when the fan-shaped roof is rotated. Since the levitation force is applied to the fan-shaped roof by operating, the load of the fan-shaped roof acting on the dolly is reduced by this levitation force to reduce the frictional force between the track and the driving force required for the dolly. It is possible to achieve various excellent effects such that the trolley can be reduced and the size of the trolley can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of the entire roof structure showing an embodiment of a retractable roof structure of the present invention.

FIG. 2 is a front view of the entire roof structure showing an embodiment of the present invention.

FIG. 3 is an enlarged view of a main part of a support portion of a fan-shaped roof showing an embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA in FIG.

5 is a sectional view taken along line BB in FIG.

FIG. 6 is an enlarged sectional view of a pneumatic levitation mechanism used in an embodiment of the present invention.

[Explanation of symbols]

10 Ring Wall 12 Fixed Roof 14 Movable Roof 16 Power Bogie 18 Floor 20 Floor Track 22 Wall Track 30 Air Caster (Pneumatic Levitation Mechanism) 32 Support Plate 36 Trussback

Claims (1)

[Claims] 1. An opening / closing method comprising a plurality of fan-shaped roofs covering an upper side of an annular wall body surrounding an outer circumference, and the fan-shaped roofs are opened and closed by relatively rotating the fan-shaped roofs around a central portion of the annular wall body. In a movable roof structure, a trolley provided on the movable fan-shaped roof is rolled on an annular track placed on the floor surface, and pneumatic levitation is performed in parallel with the trolley between the fan-shaped roof and the floor surface. A retractable roof structure, wherein a mechanism is provided, and when the fan-shaped roof is rotated, the pneumatic levitation mechanism is operated to apply a levitation force to the fan-shaped roof to reduce the load of the fan-shaped roof acting on the carriage.