JPH05295842A - Sealing structure between opening dome and wall - Google Patents

Abstract

PURPOSE:To securely seal the outer periphral parts of each dome section without hindering various equipments at the outer periphery of the opening and closing dome. CONSTITUTION:A movable dome section 46 at the upper stage side protrudes outward from the opening corner at the inner periphery of a recessed part 96. A rubber sheet 100 contacting the inner peripheral face of the recession 96 is suspended at the under face thereof. The sheet 100 is arranged in the whole arc peripheral edge of the movable dome section 46 to seal the clearance from the wall body 12. A plurality of fins 102 are protruded at the inside of the sheet 100 so as to usually contact a lightning pipe 104 in order to increase a sealing function by the sheet 100. The lightning pipe 104 is arranged all along the wall body 12 and it is supported on the wall body 12 and grounded. That is, the lightning pipe 104 serves not only as a sealing member but also as a lightning arrester.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention divides a dome constituting a ceiling portion of a field whose outer periphery is covered by a wall body into a plurality of dome sections, and relatively moves the dome sections so as to overlap each other to open and close. The present invention relates to a seal structure between an open / close dome and a wall body, which is used for an open / close dome and seals a gap between each dome section and the wall body in a closed state of the open / close dome.

[0002]

2. Description of the Related Art In recent years, a dome-shaped roof has been attached to a stadium to make it an all-weather stadium. This allows the game to be played regardless of the weather. Also, since the air conditioning can be controlled to a desired temperature and humidity, various games can be played regardless of the season.

However, in a stadium which is always closed, it is necessary to constantly manage lighting, air conditioning and the like. It is considered to be a so-called open / close type that closes when it is impossible to play outdoors.

As an example of the open / close type dome, there is a structure in which the dome is divided into three parts, each of which is assembled in a so-called ginkgo shape, and the arcuate outer periphery is supported on the upper wall body covering the field. One of the three divided dome is a fixed dome section. Further, the other two are movable dome sections that are connected along their arcuate outer circumferences to the circumferential rail portion formed on the upper part of the wall body and are movable along this rail portion.

Since each dome section has the same shape, when opened, the two movable dome sections overlap with each other and also move so as to overlap with the fixed dome section. This opens 2/3 of the dome. In the case of rain, the movable dome sections are rotationally moved in the opposite directions at the same center of rotation, and a part of the three dome sections overlap each other. As a result, the dome is fully closed.

In this way, the opening / closing dome can be realized by dividing the dome into a plurality of sections and making them movable.

[0007]

However, when the dome section is divided into the plurality of dome sections, sealing of the gap, especially in the closed state, poses a problem. In particular, a lightning rod, which is indispensable for the structure, and a rail groove for supporting each dome section and guiding the rotational movement, etc. are provided, and the structure is complicated, and sealing is performed so as not to interfere with each function. There is a need.

For example, if a seal is provided so as to extend between the outermost peripheral portion of the dome section and the wall body, the gutter will be blocked, and rainwater on the roof will not be smoothly guided to the gutter, and the rainwater treatment capacity will be reduced. It will be. Further, if the sealing is performed so as to cover the upper part of the wall body, it will surround the lightning rod, thus narrowing the range for collecting the lightning current. Further, since each dome section rotates and moves, a fixed seal structure cannot be provided.

In consideration of the above facts, the present invention provides a sealing structure between the opening / closing dome and the wall body capable of reliably sealing the outer peripheral portion of each dome section without interfering with the functions of various equipments around the opening / closing dome. The purpose is to obtain.

[0010]

According to a first aspect of the present invention, a dome forming a ceiling portion of a field whose outer periphery is covered with a wall is divided into a plurality of dome sections.
A sealing structure between an open / close dome and a wall body, which is used for an open / close dome that relatively moves and opens / closes so that the respective dome sections overlap each other, and seals a gap between each dome section and the wall body in a closed state of the open / close dome. The lightning protection conductor provided on the upper part of the wall body to collect the lightning current by directly grounding it to the ground, and when the dome section is moved relative to the lightning conductor suspended from the lower surface of the outer periphery of the dome section. And a sealing member which is moved in contact with the lightning conductor and seals between the dome section and the wall body.

[0011]

According to the first aspect of the invention, the seal member attached to the lower surface of the outer peripheral portion of each dome section is held in a suspended state. In this suspended state, the lightning conductor is in contact with each other, and the sealing member and the lightning conductor are relatively moved in contact with each other during the opening / closing operation of each dome section. Therefore, there is no leakage of rain from the contact portion, and the gap between the dome section and the wall can be completely sealed. That is, the conductor for lightning protection can have not only the original function as a lightning rod, but also the function as an auxiliary member that comes into contact with the sealing member and seals the gap between the dome section and the wall body.

Here, since the seal member is provided only on the outer circumference of each dome section, even if the dome section is in the open state or the closed state, one of the lightning conductors provided on almost the entire circumference of the wall body. The part is always exposed and does not interfere with the function of the lightning rod.

[0013]

1 and 2, there are shown a perspective view and a plan view of a dome baseball field 10 according to this embodiment. This dome stadium 10 has a cylindrical wall 12 whose periphery is erected on the ground.
A staircase-shaped spectator seat 14 is provided on the inner peripheral surface side. The audience seat 14 and the field 16 are separated by a fence 18.

As shown in FIGS. 1 and 3, the wall 12
Has an inclined surface on the inner peripheral side of the upper part, and
The grooves 20 and 22 of the book are provided in a circular shape around the rotation center CL (see FIG. 4). Below the grooves 20 and 22, the roof 24 of the dome stadium 10 (hereinafter referred to as the dome 2
Fixed dome section 26 that forms part of
(Indicated by vertical hatching in Fig. 4 for clarity)
Is supported.

As shown in FIG. 4, the fixed dome section 26 has a fan-like shape in plan view, which is similar to a ginkgo leaf in which both sides are gradually separated and the tips are connected by a substantially 1/3 arc. , About 1 above the dome stadium 10
Occupy / 3. The fixed dome section 26 has a truss structure, and the fan-shaped outer circumferential arc portion is as shown in FIG.
Grooves 20, 22 of the wall body 12 through the substantially V-shaped support portion 28
It is fixed below. Therefore, the structure is such that all the load applied to the fixed dome section 26 is transmitted to the wall body 12 via this support member 28.

As shown in FIG. 3, the grooves 20 and 22 are such that the inner sides of the openings are wider than the width of the openings.
The storage units 34 and 36 of the supporting carriages 30 and 32 are used.

Rails 38 are laid in a circular shape around the center of rotation CL around the field 16 in the longitudinal direction at predetermined portions of the accommodating portions 34 and 36 in the upper and lower grooves 20 and 22, respectively. There is. A total of six rails 38 are arranged in one accommodating portion and correspond to the rollers 40 pivotally supported by the supporting carriages 30 and 32, respectively. Therefore, the support carriages 30 and 32 are supported by the six rails 38 via the rollers 40.

Substantially V-shaped support members 42 and 44 are rotatably supported on the support carriages 30 and 32, and a skeleton structure of movable dome sections 46 and 48 having a truss structure which constitutes the dome 24 together with the fixed dome section 26 is assembled. Be done. Therefore, the structure is such that all the loads applied to the movable dome sections 46 and 48 are transmitted to the wall body 12 via the support members 42 and 44 and the support carriages 30 and 32. Movable dome section 46 is shown in FIG. 4 with hatching to the right and movable dome section 48 is shown with hatching to the right.

The fixed dome section 26 and the movable dome sections 46 and 48 are covered with an outer plate 50 (in FIG. 4, the movable dome section 46 in the upper stage).
(Only the outer plate 50 is shown) to shield the inside and outside of the dome 10.

The fixed dome section 26 and the movable dome sections 46 and 48 are concentric in longitudinal section,
The dome open state is a state in which the movable dome sections 46 and 48 overlap with the upper side of the fixed dome section 26 of FIG. 4 when seen in a plan view.

The supporting carriages 30 and 32 for supporting the movable dome sections 46 and 48 are movable along the rail 38 by the driving force of a driving means (not shown). The upper movable dome section 46 and the lower movable dome section 48 move in the opposite directions (directions of arrows A and B in FIG. 4) from the overlapped state, and each move about 120
At the time of the rotational movement, the side edges overlap as shown in FIG. 4, and this state is the dome closed state. A predetermined gap (dimension C in FIGS. 3 and 5; for example, about 60 cm) is formed between the upper movable dome section 46 and the lower movable dome section 48. Also, the lower movable dome section 48 and the fixed dome section 2
A predetermined gap (about 60 cm) is also formed in the overlapping portion with 6.

On the other hand, in the fixed dome section 26, from the side end portion 26A of the side edge which overlaps with the movable dome section 46 when the dome is closed, it is directed toward the upper movable dome section 46, that is, vertically upward in FIG. The ribs 52 shown are erected. The upper end of the rib 52 has the same height as the upper end of the movable dome section 48,
As a result, the gap between the upper end of the rib 52 and the lower end surface of the movable dome section 46 when the dome is closed is about 60 cm.
It is said that. The side end portion 48A of the movable dome section 48 rotates in the direction of arrow B in FIG. 4 until it comes close to the rib 52 when the dome is closed.
Overlap the fixed dome section 26.

Thus, the three dome sections 2
6, 46 and 48 have a constant vertical gap (about 60 cm) in the overlapping portions in the plan view so that they do not interfere with each other when the movable dome sections 46 and 48 move.

As shown in FIG. 5, the vicinity of the center of rotation CL of the three dome sections 26, 46, 48 is always overlapped in plan view regardless of the rotational positions of the movable dome sections 46, 48. Each gap C part of the location (the movable dome section 4 near this rotation center CL)
6 and 48 are thin and have wide gaps) are connected by shock absorbers 54 and 56.
As is well known, the shock absorbers 54 and 56 are configured to absorb the shock by moving a fluid between two chambers divided by a piston through an orifice having a predetermined diameter.

The shock absorbers 54 and 56 are provided in the dome sections 26 and 4 in an emergency, such as an earthquake or a strong wind.
It has a role of preventing the contact of each other when 6 and 48 shake.

The dome 24 constructed in this way is opened on a sunny day such as a sunny day and closed on a bad day such as a rainy day to form an all-weather dome stadium 10 with an open feeling. can do.

Here, as shown in FIG. 4, a seal portion 58 is arranged in a substantially radial direction with the rotation center CL as the center, at the portions where they overlap each other in the dome closed state. The seal portion 58 is attached to the dome section located below the two overlapping dome sections. Hereinafter, the seal portion 58 between the fixed dome section 26 and the lower movable dome section 48 will be described as an example.

As shown in FIG. 6A, the seal portion 58
Is a main tube 60 having a cylindrical cross section perpendicular to the axial direction.
And a sub tube 62.

The main tube 60 is composed of a pair of rubber sheets 60A and 60B, and the lower end portions of these sheets 60A and 60B are fixed dome section 2.
It is fixed to the upper surface of 6 with fixing bolts 60C and 60D. Further, both ends of the thin plate 66 are closely attached to the upper ends of the sheets 60A and 60B from the lower side of FIG. 6A, and the opposite sides of the plate 66 (see FIG. 6) are attached to the upper ends of the sheets 60A and 60B. The widthwise end portions of the sub-tubes 62 bent in an arc shape from the upper side of (A) are in close contact with each other. As shown in FIG.
As shown in (B), the plate 70 is in contact, and the bolts 74 penetrate both ends of the plates 66, 70, the sheets 60A, 60B and the sub tube 62 and are screwed into the nut 72.

As a result, the ends of the sheets 60A and 60B are tightly sealed to both ends of the sub tube 62. Further, since the plate 66 connects both ends of the sheets 60A and 60B, the seal portion 58 has a two-step circular shape as a whole. The connection by the plates 66 and 70 is formed intermittently along the longitudinal direction of the seal portion 58. In addition, the sheets 60A and 60B and the sub tube 6
An adhesive is applied to the contact portion 2 of FIG.

Air can be supplied to the main tube 60 and the sub-tube 62 by an air supply means (not shown), and the structure is such that internal pressure is applied in accordance with the supply amount of air to expand. Here, in general, since the internal pressure is evenly applied to the inner peripheral surface, the main tube 6
0, the sub-tube 62 expands so that the cross section perpendicular to the axis becomes circular.

In this embodiment, the fixed dome section 26
A guide plate 64 as a guide member is attached so as to surround the main tube 60. This guide plate 64
Covers the lower half of the main tube 60 and the base is fastened together with the seats 60A, 60B to the fixed dome section 26 with the fixing bolts 60C, 60D.
Fixed dome section 2 at the bottom of A and 60B respectively
It is sandwiched between the upper surface of 6 and. The guide plate 64 is bent so that the facing gap expands from the middle portion to the upper end, and limits expansion of the lower half of the main tube 60. Therefore, the expansion of the lower half of the main tube 60 is limited, and the upper half of the main tube 60 where the guide plate 64 does not exist expands more than the lower half, resulting in a vertically elongated elliptical shape (FIG. 6 (A)). ) See the imaginary line). In addition, the guide plate 6
Seat 60 with 4 and fixed dome section 26
By sandwiching the lower ends of A and 60B, the airtightness of the lower end of the main tube 60 is ensured.

Here, since the main tube 60 and the sub-tube 62 are not supplied with air when the dome is open and the movable dome section 48 is rotating, the sub-tube 62 is contracted. It will not come into contact with. However, after closing the dome, the main tube 60 and the sub tube 6
When air is supplied to the inside of the tube 2 and a predetermined internal pressure is reached, the sub tube 62 comes into contact with the movable dome section 48, and the fixed dome section 26 and the movable dome section 4
8 is sealed (see the solid line in FIG. 6A). The surface of the movable dome section 48 with which the subtube 62 abuts is recessed (projected upward) in an arc shape, and the width direction of this arc surface (relative movement between the fixed dome section 26 and the movable dome section 48). Ribs 48A are formed at both ends (direction side) to prevent rain and the like from entering this gap.

As shown in FIG. 7, such a seal structure has a rib 52 provided at the opposite end of the fixed dome section 26 facing the lower movable dome section 46 and the upper movable dome section. 46, and between the lower movable dome section 48 and the upper movable dome section 46, respectively.

Further, as shown in FIGS. 7 and 8A, an arcuate seal portion is provided on the upper surfaces of the fixed dome section 26 and the lower movable dome section 48 so as to surround the shock absorbers 54 and 56. 76 are provided. The arc-shaped seal portion 76 on the fixed dome section 26 is approximately 1/2 arc, and the arc-shaped seal portion 76 on the upper surface of the lower movable dome section 48 is 3 /.
There are four circular arcs, and they are arranged closer to the fan-shaped circular arc outer peripheral portions (supporting portions for the supporting carriages 30 and 32) of the fixed dome section 26 and the movable dome section 48 than the rotation center CL. The structure of the arc-shaped seal portion 76 is configured by extending the seal portion 58 having a two-step structure formed by the main tube 60 and the sub tube 62.

A vertical wall seal portion 82 is provided between the vertical wall portion 78 which is the side surface of the rib 52 in the fixed dome section 26 and the vertical wall portion 80 which is the side surface of the lower movable dome section 48. ing. Vertical wall seal portion 82
Is a vertical wall tube 84 attached to the vertical wall portion 78 side.
And a vertical wall tube 86 attached to the vertical wall portion 80 side.
It has and. The vertical wall tubes 84 and 86 are formed of a rubber sheet bent in an arc shape like the sub-tube 62, and both widthwise ends thereof are flanges, and the vertical wall portions 78 and 80 are fixed by a fixing means (not shown). It is fixed to each.

Here, when the fixed dome section 26 and the lower movable dome section 48 overlap (when the dome is open), the vertical wall portion 80 is different from the side where the rib 52 of the fixed dome section 26 is formed. Since it is on the same plane as the side surface on the opposite side (see the alternate long and short dash line in FIG. 8B), the vertical wall portions 78 and 80 are separated from each other, and the vertical wall tubes 84 and 86 are separated from each other.

When the lower movable dome section 48 is rotated about the rotation center CL to close the dome as shown by an arrow F in FIG. 8B, the vertical wall portion 80 causes the vertical wall portion 80 of the fixed dome section 26 to rotate. The part 78 is gradually approached (see FIG. 8).
(Refer to the imaginary line of (B)), the vertical wall tubes 84 and 86 contact each other in the dome completely closed state, and the vertical wall portions 78 and 80
The gap between them can be sealed.

Here, the sub-tube 62 on the rib 52
The vertical wall tube 84, the sub-tube 62 of the arc-shaped seal portion 76 on the fixed dome section 26, and the sub-tube 62 of the seal portion 58 provided on the fixed dome section 26 are formed by one continuous member. Has been done. Further, the main tube 60 forming the arc-shaped seal portion 76 on the fixed dome section 26 and the seal portion 58 disposed at the side end of the fixed dome section 26 opposite to the side where the rib 52 is formed. The main tube 60 and the main tube 60 are formed by one continuous member.

Further, the vertical wall tube 86, the sub-tube 62 of the arcuate seal portion 76 between the movable dome sections 46 and 48, and the sub-tube 62 of the seal portion 58 between the movable dome sections 46 and 48 are continuous. It is formed of one member.

The end of the main tube 60 on the rib 52 abutting the vertical wall seal portion 84 and the end of the main tube 60 of the arcuate seal portion 76 abutting the vertical wall seal portion 86 are closed. ing. Further, the end portion of the main tube 60 of the arcuate seal portion 76 on the fixed dome section 26 that is abutted against the vertical wall portion 78 is also closed. Further, the ends of the respective seal portions 58 extending in the three radial directions are also closed.

The seal portion 58, the arc-shaped seal portion 76, and the vertical wall seal portion 82 are fixed dome section 26 and lower movable dome section 48 when the dome is closed.
The gap between the vertical wall seal portion 82, the arcuate seal portion 76 on the fixed dome section 26, and the seal portion 58 on the side opposite to the side of the fixed dome section 26 on which the rib 52 is formed are sealed. Further, the gap between the fixed dome section 26 and the upper movable dome section 46 is sealed by the seal portion 58 on the rib.
Furthermore, the clearance between the upper movable dome section 46 and the lower movable dome section 48 is equal to the arcuate seal 76 on the lower movable dome section 48 and the seal portion 58 on the lower movable dome section 48. Sealed by and.

Therefore, as shown in FIG. 7, all the gaps between the three dome sections 26, 46 and 48 can be filled.

As shown in FIG. 9, holes 88 are formed in a plurality of portions of the vertical wall portions 78, 80 where the vertical wall tubes 84, 86 are arranged, and a cylinder rod 90 is formed.
Is penetrated, and the tip end portion of the cylinder rod 90 is inserted into the vertical wall tubes 84 and 86.

The cylinder body 92 that drives the cylinder rod 90 includes a vertical wall tube 84 of the vertical wall portions 78 and 80,
The cylinder rod 90 is fixed to the side opposite to the side where 86 is provided, and the cylinder rod 90 can be expanded and contracted by hydraulic pressure.

A pressing plate 94 is attached to the tip of the cylinder rod 90. When the cylinder body 92 pushes the cylinder rod 90 in the dome closed state, the pressing plate 94 is attached to the vertical wall tubes 84 and 86. The opposing walls are pressed in the lateral direction so as to be in close contact with each other. As a result, the vertical wall tubes 84 and 86 are closely attached to each other without being sagged by gravity, and the vertical wall tubes 8 and
The airtightness between 4 and 86 is maintained.

As shown in FIGS. 3 and 10, the wall 12
A concave portion 96 is provided on the uppermost portion of the above, and has a role as an upper gutter (note that in FIG. 10, only a part of the concave portion 96 is shown). The recess 96 is provided over the entire circumference of the wall 12. A part of the movable dome section 46 on the upper stage side protrudes like an eaves into the recessed portion 96.

A rubber sheet 100 is hung from the protruding lower surface of the movable dome section 46 via a substantially L-shaped bracket 98. This sheet 100
The lower end portion of is contacted with the side surface forming the recessed portion 96. The seat 100 is provided over the entire arc outer periphery of the movable dome section 46 on the upper stage side, whereby the movable dome section 46 on the upper stage side and the wall body 12 are provided.
The gap between and is sealed.

On the inside of the seat 100, a plurality of fins 102 (two places in this embodiment) extending obliquely downward are projected. Corresponding to the upper fin 102, the wall 1
A lightning protection pipe 104 is provided on the upper surface of 2 (between the recessed portion 96 and the slope portion where the grooves 20 and 22 are formed). A substantially L-shaped flange 106 is formed on a part of the outer periphery of the lightning protection pipe 104.
The lightning protection pipe 104 is held by the wall body 12 by fixing 6 to the substantially L-shaped bracket 108.

The lightning protection pipe 104 is grounded by a conducting means (not shown). The lightning protection pipe 104 has a circular axis centered around the entire circumference of the wall 12 as shown in FIG. 11, and the movable dome section 46 on the upper stage side is a fin of the seat 100. It is adapted to be rotationally moved while maintaining contact with 102 (direction of arrow D in FIG. 11).

That is, the lightning protection pipe 104 has a role as a sealing member and a lightning rod.

As shown in FIGS. 3 and 12, a recess 110 is provided between the groove 20 and the groove 22 to serve as a middle trough (note that in FIG. 12, the recess 11 is shown).
Only part of 0 is shown). The recess 110 is provided along the entire circumference of the wall 12. As shown in FIG.
The movable dome section 48 on the middle stage side protrudes outward from the inner peripheral opening corner of the recess 110.

This protruding movable dome section 48
Like the movable dome section 46 on the upper side, the lower surface of the seat 11 is provided with a substantially L-shaped bracket 111.
2 is provided, and the lower end is in contact with the side surface of the recess 110. In addition, the fin 11 protruding from the seal 112
The structure in which 4 is in contact with the lightning protection pipe 116 is similar. That is, the L-shaped flange 117 protruding from the lightning protection pipe 116 is fixed via the substantially L-shaped bracket 119 fixed to the wall body 12, and the seat 112 contacts the lightning protection pipe 116. While rotating (see arrow E in FIG. 11).

The lightning protection pipe 116 that contacts the seat 112 of the lower movable dome section 48 is the wall 1
It is not necessary to dispose the movable dome section 48 around the entire circumference of 2, and it suffices if the movable range of the movable dome section 48 on the lower stage side (about 240 °).

On the other hand, since the arcuate peripheral edge of the fixed dome section 26 is sealed by a seal member (not shown), when the dome 24 is closed, the entire arcuate peripheral edge of each dome section is covered by the seal member and the seat 10.
It will be sealed by 0,112.

Here, the gap between each dome section is
Although the seal is provided by the seal portion 58 and the like, the gap between the movable dome sections 46 and 48 and the wall body 12 (the direction perpendicular to the paper surface of FIG. 3) cannot be sealed with the same configuration as the above because the gap is narrow. ..

Therefore, in this embodiment, FIG. 10 and FIG.
As shown in FIG. 3, brushes 118 and 120 are provided at the side ends of the movable dome sections 46 and 48 on the opposing surfaces of the movable dome sections 46 and 48 and the wall body 12, respectively. As shown in FIG. 13, this brush 11
8 and 120 are configured by a plurality of linear rods having elastic force erected in a dense state from elastic sheets 121 laid on the movable dome sections 46 and 48 and the wall 12, respectively. Each of the brushes 118 and 120 has a predetermined width, and has such a length that the tips of the brushes overlap each other. As a result, the brushes 118 and 120 are relatively movable and airtightness is maintained.

Further, as shown in FIG. 13, the brush 11
8, 120 width direction (dome section relative movement direction)
Airtight sheets 122 and 124 made of vinyl are interposed in the middle portion in the longitudinal direction, and the base portion thereof is fixed to the elastic sheet. Further, the airtight sheets 122, 1
24 has a length such that the tip portions thereof overlap, like the brushes 118 and 120.

The brushes 118 on the side of the movable dome sections 46, 48 correspond to the tips of the brushes 120 on the side of the wall body 12 in the closed state of the dome. Further, at the same time when the brushes 118 and 120 are overlapped with each other, the tip portions of the airtight sheet 122 and the airtight sheet 124 are in contact with each other, thereby improving airtightness as compared with the case where only the brushes 118 and 120 are sealed.

The operation of this embodiment will be described below. When the weather is fine, the movable dome sections 46 and 48 are
The entire surface is superposed on the fixed dome section 26. As a result, the upper part of the spectator seats 14 and the field 16 surrounded by the wall body 12 is opened for about 2/3, so that a feeling of openness can be provided. Further, by opening the dome 24, it is possible to eliminate the supply of lighting, air conditioning, etc., and save energy.

In this case, since air is not supplied to the main tube 60 and the sub tube 62, the main tube 60 and the sub tube 62 are contracted. Therefore, the sub tube 62 is not in contact with the lower surface of the upper dome section. In addition, the vertical wall portion 7
The vertical wall portion seal 84 and the vertical wall portion seal 86 are not in contact with each other because 8 and 80 are in the separated state.

When the weather is rainy or the like, the supporting carriages 30, 32 supporting the movable dome sections 46, 48 move along the rails 38 by a driving means (not shown). This movement causes the movable dome section 46 on the upper stage side and the movable dome section 48 on the lower stage side to rotate in opposite directions (directions of arrows A and B in FIG. 4). By the rotational movement of the movable dome sections 46 and 48, the overlapping portions of the movable dome sections 46 and 48 with the fixed dome section 26 gradually decrease.

When the movable dome sections 46 and 48 each rotate about 120 °, a part of the side edges of the movable dome section 46 on the upper side and the movable dome section 48 on the lower side (continuous from the side near the center of rotation CL to the outer periphery). Side) that overlap. As a result, a dome 24 is formed and closed above the spectator seats 14 and the field 16 surrounded by the wall 12.

By the way, this movable dome section 4
Since the sub-tube 62 is not in contact with the lower surface of the upper dome section during the rotational movement of the sub-tubes 6 and 48, the seal portion 58 including the sub-tube 62 is not damaged. However, in this state, there is a gap (about 60 cm) between the side edges of the dome sections 26, 46, 48, which causes a decrease in airtightness and a leak of rain.

Therefore, in this embodiment, air is supplied to the main tube 60 and the sub tube 62 after closing the dome 24 by the rotational movement of the movable dome sections 46 and 48. By supplying this air, the main tube 60
The sub tube 62 expands, but the main tube 6
Since the guide plate 64 is provided in the portion corresponding to the lower half of 0, the lateral expansion of the lower half of the main tube 60 is limited.

Therefore, this limited pressure is added to the pressure for expanding the upper half of the main tube 60, and the main tube 60 expands into a vertically elongated elliptical shape. That is, it expands toward the lower surface of the upper dome section. Due to the expansion of the main tube 60, the sub tube 62
Can abut the lower surface of the upper dome section and seal the gap. That is, this gap is sealed by the seal portion 58 having a two-stage structure (Dharma type).

Specifically, the overlapping portion of one side of the fixed dome section 26 and one side of the lower movable dome section 48, and the rib 52 provided on the other side of the fixed dome section 26. The overlapping portion of the upper end and one side of the upper movable dome section 46, the other side of the lower movable dome section 48 and the side of the upper movable dome section 46 are sealed by the seal portion 58. It

As described above, in this embodiment, since the lower half of the main tube 60 is expanded by the guide plate 64 and expanded into a vertically elongated elliptical shape, when the main tube 60 is expanded without any restriction ( It is possible to obtain a predetermined height dimension with a smaller amount of air supply than that in the cross-sectional shape perpendicular to the axis (circular shape). Therefore, the air supply time can be shortened and the work efficiency can be improved.

Further, the seal portion 58 is not a single tube but has a two-stage structure (main tube 60 and sub tube 6).
Since it is a dharma type in which 2 is overlapped, the time of the sealing work can be further shortened.

By the way, the movable dome sections 46 and 48 can be reliably sealed by the sealing portion 58 at the overlapping portions of the dome sections.
Since there is a gap also in the rotation center part, it is necessary to seal the gap in the rotation center part. Further, since each dome section has a large thickness, it is necessary to seal the vertical wall portions 78 and 80 approaching and separating according to the opening and closing of the dome 24.

Therefore, in this embodiment, the arcuate seal portion 7 is arranged so as to surround the shock absorbers 54 and 56 by rotating the main tube 60 and the sub tube 62.
6 and the vertical wall tubes 84 and 86 are respectively arranged on the vertical wall portions 78 and 80 (see FIG. 7).

As a result, the shock absorbers 54, 5
The seal around 6 becomes perfect, and it is possible to prevent airtightness and prevent leakage of rain.

On the other hand, sheets 100 and 112 are provided on the arc-shaped peripheral edges of the movable dome sections 46 and 48, respectively.
The lower ends of the fins 102 and the lightning protection pipe 1 are in contact with the recesses 96 and 110, respectively.
04 is in contact with. Therefore, airtightness is maintained even in the arc-shaped peripheral edges of the movable dome sections 46 and 48.

The lightning protection pipes 104 and 116 are grounded by a conducting means (not shown) and also have a role as a lightning rod, and a lightning strike is guided to the grounding portion.

Between the movable dome sections 46 and 48 and the wall 12, brushes 118 and 120 and airtight sheets 122 and 124 which are intertwined with each other in a closed state.
Since the brushes 118 and 120 are entangled with each other, rain or the like entering through the grooves 20 and 22 due to the entanglement of the brushes 118 and 120 can be substantially suppressed, and the airtightness can be completely maintained by the airtight sheets 122 and 124 made of vinyl.

Since the fixed dome section 26 does not move, its periphery is reliably sealed (not shown). This allows the fixed dome section 2
6. All the gaps between the movable dome sections 46 and 48 can be sealed, the airtightness is good, and the leakage of rain can be prevented.

Further, the movable dome section 4 of this embodiment
The rotation centers of 6, 48 are shock absorbers 54, 5
Even if each dome section rocks in an emergency such as an earthquake or a strong wind, the rocking can be alleviated and there is no problem of contacting each other.

[0078]

As described above, the sealing structure between the opening / closing dome and the wall body according to the present invention reliably seals the outer peripheral portion of each dome section without hindering the functions of various equipments on the outer periphery of the opening / closing dome. It has an excellent effect that

[Brief description of drawings]

FIG. 1 is a perspective view of a dome stadium with an open dome.

FIG. 2 is a plan view showing the dome of the dome stadium in a closed state and in phantom lines.

3 is a sectional view taken along line III-III of FIG. 2 when the dome is closed.

FIG. 4 is a plan view when the dome is closed.

FIG. 5 is a side view showing only the skeleton of the dome rotation center when the dome is opened.

6A is a sectional view taken along line VI-VI of FIG. 4, and FIG. 6B is a perspective view of a seal portion.

FIG. 7 is a perspective view showing a routed state of a seal portion.

8A is a plan view of the center of rotation of the dome section showing the closed dome in phantom, and FIG. 8B is a diagram showing the open / closed state of only the fixed dome section and the lower dome section. ) Is a plan view corresponding to FIG.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is an enlarged view of FIG. 3 showing a cross section of the uppermost wall body.

FIG. 11 is a perspective view showing a moving state of a sheet provided on an arc-shaped peripheral edge of a movable dome section.

FIG. 12 is an enlarged view of FIG. 3 showing a cross section of an intermediate portion of the wall body.

13 is a sectional view taken along line XIII-XIII in FIG.

[Explanation of symbols]

 10 dome baseball field 12 wall body 24 dome 26 fixed dome section 46 movable dome section 48 movable dome section 96 concave part (rain gutter) 100 sheet (sealing member) 102 fins 110 concave part (rain gutter) 104 lightning protection pipe (conductor for lightning protection) ) 112 sheet (seal member) 114 fin 116 lightning protection pipe (lightning protection conductor)

Claims (1)

[Claims] 1. A dome that constitutes a ceiling of a field whose outer periphery is covered by a wall is divided into a plurality of dome sections, and the dome sections are used for an opening / closing dome that relatively moves to open and close so as to overlap each other. A sealing structure between the opening / closing dome and the wall body that seals a gap between each dome section and the wall body in a closed state of the opening / closing dome, the lightning current being provided on an upper portion of the wall body and grounded. And a conductor for lightning that flows directly to the ground, and is suspended from the lower surface of the outer peripheral portion of the dome section and moved while contacting with the conductor for lightning when the dome section moves relatively between the dome section and the wall body. A sealing structure between an opening / closing dome and a wall body having a sealing member for sealing.