JPH0510087Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> This invention relates to a support device for a rotating beam used in a retractable dome roof.

[Conventional technology] In large buildings such as baseball stadiums and track and field stadiums, roofs are installed on top of the buildings for the purpose of controlling lighting and temperature, and protecting the inside of the buildings in rainy weather. It is desired that the opening/closing type be used.

In other words, by opening and closing the stadium, the stadium environment will be as close to nature as possible on sunny days, and competitions can continue even on rainy days.

In response to this type of demand, the inventors of the present invention previously proposed a ring-shaped fixed roof with a circular opening in the center and a peripheral portion supported by an outer wall, etc., and installed a movable ring on the fixed roof. We proposed a retractable dome-shaped roof consisting of a plurality of fan-shaped movable roofs connected to each other at the center of a central opening and covering the opening.

<<Problems to be solved by the invention>> In order to support the movable roof above the opening, it is necessary to provide a beam above the opening, and the beam must be able to be easily removed with the movable roof open. .

For this purpose, it has been proposed to make the beam a pivotable beam and to hold the pivotable beam in an open state on the inner periphery of the opening of the fixed roof. Stability, safety, and support rigidity were the biggest issues.

This invention was made to solve the above problems, and aims to provide high operational stability and safety when the rotating beam turns, and to ensure sufficient support rigidity for the rotating beam. do.

<Means for Solving the Problems> In order to achieve the above-mentioned object, this invention includes a ring-shaped fixed roof with a circular opening in the center and a peripheral edge supported by an outer wall, etc.; An annular beam provided at the periphery of the opening, and a plurality of rotating beams rotatably attached to the inner circumference of the annular beam via hinges, and the arch is formed by joining the rotating ends of the rotating beams. The invention is characterized in that a semicircular guide rail is provided on the inner periphery of the annular beam for each of the rotating beams in accordance with the turning locus of the rotating beam.

<<Example>> Hereinafter, an example of this invention will be described in detail using the drawings.

FIG. 1 shows a plan view of a retractable dome-shaped roof according to this invention.

In the figure, this dome-shaped roof includes a ring-shaped fixed roof 1 with a circular opening at the center and a peripheral edge supported by an outer wall (not shown), and a central opening 2 located on the fixed roof 1. It consists of a plurality of movable roofs 3 arranged so as to be movable toward.

The movable roof 3 is made up of six substantially identical fan-shaped panels divided into six pieces at equal angular intervals with the center point of the central opening 2 of the fixed roof 1 as a base point.

It goes without saying that the movable roof 3 is not limited to being divided into six parts, but may be divided into other numbers.

The fixed roof 1 is constructed by assembling an annular beam 6 to the innermost periphery of fixed roof main beams 4 and 5, which are combined radially and annularly, as shown in FIG. ). The movable roof 3 is a lightweight truss structure with a roof membrane stretched over it.

A rotary beam 7 is disposed on the inner peripheral portion of the annular beam 6 and is continuous with the center side end portion of each movable roof 3 .

At the mounting base of the pivot beam 7, hinge brackets 6a, 7a are attached to the sides of the annular beam 6 and the pivot beam 7.
is provided, and by passing a hinge pin 8 between the hinge brackets 6a and 7a, the pivot beam 7 is pivotally hinged to the inner peripheral portion of the annular beam 6.

In addition, the pivot ends of each pivot beam 7 are extendable and retractable, and as shown in FIG. 1, by extending the pivot ends with each pivot beam 7 facing toward the center, they can be connected to each other at the roof center P. , formed in an arch shape.

A main guide rail 10 is provided at the top of each of the rotating beams 7, which is continuous with the main guide rail 9 provided at the top of the main girder 4, and a main guide rail 10 is provided on the fixed roof 1, which is parallel to the main guide rails 9 and 10. A pair of sub guide rails 11 are fixed.

Each movable roof 3 is movable along the guide rails 9, 10 and each guide rail 11 toward a center point P as indicated by the arrow in the center of FIG. 1, and is moved as necessary to close the opening 2.

Further, a guide rail 12 is disposed at the pivot base of the pivot beam 7 and protrudes semicircularly from the inner circumference of the annular beam 6 in accordance with the pivot trajectory of the pivot beam 7. The guide rail 12 is provided on the upper surface of a substantially U-shaped rail support beam 13 fixed to the main beam 5 and the annular beam 6, and supports the lower surface of the rotating beam 7 and supports the annular beam 6. From a state that matches the inner circumference of
This is a sliding guide until the 90° rotation position. The sliding surface of the guide rail 12 is made of a material with a low coefficient of friction, such as Himolar or Teflon, to reduce the frictional resistance of the sliding surface as much as possible.

Therefore, in order to fully open the opening 2 from the arched roof state of each pivot beam 7 shown in FIG.
When rotated by a driving means (not shown) using the rotational beam 7 as a base point, each rotating beam 7 is guided in a sliding manner along the guide rail 12, and finally its turning end contacts the inner periphery of the annular beam 6, opening the opening 2. Fully open.

During this turning operation, the load is not concentrated only on each hinge pin 8, but is shared by the support beam 13, so the support rigidity is high, and the deflection at the turning end is also reduced, allowing stable and safe turning operation. .

Note that the positioning of the rotating beam 7 at the fixing position shown in FIG. It will be done.

<<Effects of the invention>> As explained in detail in the embodiments above, according to this invention, the pivoting beam can be rotated smoothly, stably, and safely using the guide rail, and the load of the pivoting beam can be reduced by the guide rail. Since the load is shared, the load will not be concentrated on the hinge portion, the support rigidity will be high, and the deflection at the turning end will be small.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a retractable dome-shaped roof according to this invention, and FIG. 2 is a partial perspective view showing a support device for a rotating beam of the dome-shaped roof. 1... Fixed roof, 2... Opening, 3... Movable roof, 6... Annular beam, 6a, 7a... Hinge bracket, 7... Rotating beam, 12... Guide rail.

Claims (1)

[Scope of utility model registration request] A ring-shaped fixed roof with a circular opening in the center and a peripheral edge supported by an outer wall, an annular beam provided around the central opening of the fixed roof, and a hinge attached to the inner circumference of the annular beam. In a device comprising a plurality of pivotable beams attached so as to be pivotable, and forming an arch by joining the pivoting ends of the pivotable beams, a pivotable beam is attached to the inner periphery of the annular beam for each pivotable beam. 1. A support device for a rotating beam on a dome-shaped roof, characterized in that a semicircular guide rail is provided according to the turning trajectory of the rotating beam.