JPH0762369B2 - Retractable roof safety device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a roof structure, and more particularly to a safety device for an openable roof that can be partially opened and closed depending on the weather.

《Prior art》 Recently, all-weather stadiums have attracted attention, and part of the roof has been opened / closed according to the weather, allowing natural lighting and ventilation in fine weather, and athletic competition in rainy weather. The applicant proposed a retractable dome roof having a movable roof that is slid on the fixed roof and is opened and closed by being guided by a guide member in an opening inside the fixed roof. Japanese Patent Application No. 61-79099 (Japanese Patent Laid-Open No. 62-236939)
And Japanese Patent Application No. 61-163592 (Japanese Patent Application Laid-Open No. 63-19356).

<< Problems to be Solved by the Invention >> However, in any of the openable and closable dome roofs, safety measures in consideration of the situation where the movable roof falls downward from the moving position are insufficient.

The present invention is an improvement invention to the above-mentioned applicant's application, and its object is to configure a movable roof opening / closing device with a simple moving mechanism, and to the moving mechanism, a safety device for automatically stopping the movable roof. The purpose of the present invention is to provide a safety device for a retractable roof.

<< Means for Solving the Problems >> In order to achieve the above object, a safety device for a retractable roof according to the present invention includes a guide rail laid along the axial direction of a support beam supporting the roof and the guide rail. A trolley that travels along a rail, a movable roof that is supported by the trolley and is movable from the storage position toward the top opening of the roof, and both ends that are locked to the trolley and that is movable along the guide rail. A traction member such as a belt, a chain, or a metal rope that is looped around a moving section of the roof in an endless loop through a diverting member, and a braking piece is incorporated into the trolley and a braking piece is attached to the guide rail according to the looseness of tension of the traction member. It comprises a braking mechanism for pressing, a locking piece that is integral with the bogie frame of the bogie and extends from the bogie to the back of the guide rail against which the braking piece of the braking mechanism abuts, and a drive device for the towing member. Of.

To give a specific example of the braking mechanism, a cylinder body,
A piston housed therein, a piston rod integrally projecting with the piston toward both ends of the cylindrical body, an eccentric cam pivotally supported at one protruding end of the piston rod, and the cylindrical body And a coil spring that constantly urges the piston rod toward the eccentric cam, and the pulling member is connected to an end of the piston rod opposite to the eccentric cam.
The position where the cylinder is attached to the carriage is a position where the outer peripheral edge is pressed against the guide rail when the eccentric cam is rotated by the urging force of the coil spring in the cylinder, and the eccentric cam is connected to the braking piece. To do.

<< Operation >> In the above configuration, when the traction member is driven in any direction by the drive device (either left or right when the support beam is viewed from the side), the trolley installed on the guide rail on the support beam stops at the traction member. Since it is worn, it travels according to the moving direction of the traction member.

On the other hand, when the pulling member loses tension due to pulling, the braking mechanism presses the braking piece against the guide rail according to the looseness of the pulling member, and this pressing force brakes the carriage. The bogie will not derail from the guide rail due to the reaction force associated with braking. This is because the locking piece determines and holds the relative position between the carriage and the guide rail in advance.

<Example> Hereinafter, a preferred example of the present invention will be described with reference to the drawings. In this embodiment, an opening formed in the fixed roof 9
The movable roofs 11 and 13 are provided so as to be movable from the fixed roof 9 toward the opening 19 so as to cover the openable and closable 19 and to the opening 19 of the movable roofs 11 and 13 provided in the opening 19. Dome-shaped retractable roof 1 with support beams 15 for guiding the movement of
As shown in FIG. 1, the retractable roof 1 mainly has a ring-shaped side wall 3 standing on the ground, and a ring formed on the side wall 3 along the circumferential direction thereof. The fixed roof 9 has an outer peripheral edge fixed to the outer peripheral beam 5 provided on the upper edge peripheral edge of the side wall 3, and an annular beam 7 is attached to the inner peripheral edge of the fixed roof 9. Has been. And in the central part of this fixed roof 9, an opening 19
Are formed.

The fixed roof 9 is formed in the outermost part of the three parts divided by two concentric circles drawn with radii of approximately 1/3 and 2/3 of the radius of the flat circular roof surface, respectively. .

Each of the movable roofs 11 and 13 is set to have an outer dimension corresponding to each of the two inner portions of the three portions divided by the two concentric circles described above. More specifically, the movable roofs 11 and 13 are further divided into six fan-shaped sections with a central angle of 60 ° from the center of the flat circular roof surface, and the central side of the roof is the upper movable roof 11 and the fixed roof 9 side. It is configured as a lower movable roof 13 and is arranged in multiple layers so as to be slidable relative to each other.

Guide rails 17 are provided on the fixed roof 9 for slidably supporting both end portions of the lower movable roof 13, whereby the lower movable roof 13 can slide with respect to the fixed roof 9. There is. Further, guide rails 17 are provided on the lower movable roof 13 to slidably support both end portions of the upper movable roof 11, whereby the upper movable roof 11 can slide with respect to the lower movable roof 13. It is like this.

When the opening 19 is opened, the upper movable roof 11 slides on the guide rail 17 of the lower movable roof 13 to fit on the lower movable roof 13, and the lower movable roof 13 slides on the guide rail 17 of the fixed roof 9. It slides and is stacked and accommodated on the fixed roof 9.
When closing the opening 19, the upper movable roof 11 is moved on the support beam 15 while sliding the upper movable roof 11 with respect to the lower movable roof 13, and the lower movable roof 13 is slid with respect to the fixed roof 9 while the support beam 15 is being moved. The roof can be closed by moving it up.

Next, details of the moving mechanism 24 for the movable roofs 11 and 13 are shown in FIG.

Following the fixed roof side ends (rear ends) of the movable roofs 11 and 13, follower trucks 20 and 20a are attached, respectively, while on the other hand, below the opening side ends (front end) of the movable roofs 11 and 13, there are tractions. Driven traveling carts 21 and 21a are attached, respectively.

The traveling carriages 21 and 21a are provided with a roadbed 22 provided along the support beams 15.
On the other hand, as for the follower trucks 20 and 20a, the follower truck 20a of the lower movable roof 13 is mounted on the guide rail 17 on the fixed roof 9 and the upper movable roof. 11 tracking trucks 20 guide rails 17 on the lower movable roof 13
Each is arranged so that it can run freely.

On the other hand, at the base end of the support beam 15 on the fixed roof side, drive wheels 26 as drive means are installed corresponding to the upper and lower movable roofs 11 and 13, respectively. The drive wheel 26 is a drum-shaped drive wheel that is connected to an output shaft of a drive device such as a motor via a speed reducer formed of gears. Further, a pulley mechanism 25 as a deflecting member is provided at the opening-side end of the support beam 15 so as to be supported by the tip of the roadbed 22. This pulley mechanism 25 is composed of a set of two sheaves, and each movable roof 11,1 like the drive wheels 26.
It is provided corresponding to each of the three.

As a member for transmitting the driving force of the drive wheels 26 to the traveling carriages 21, 21a, tension is introduced by the driving wheels 26 and the traveling carriages 21, 2a are
A towing member 27 for towing the 1a is adopted, and as the towing member 27, for example, a metal rope is used. And the traction member 27 is installed along the rail 23 and the guide rail 17,
It is arranged in an endless loop between the drive wheels 26 and the pulley mechanism 25 of each of the base end portion and the tip end portion of the support beam 15 via the traveling carriages 21 and 21a.

Along the longitudinal direction of the rail 23 and the guide rail 17 along which the traction member 27 is provided, smoothness of movement of the traction member 27 when tension is introduced by the drive wheels 26 to drive the traction member 27 is ensured and slack is prevented. A large number of guide rollers 28 are arranged side by side. Further, in order to prevent the traction member 27 from slipping on the outer peripheral surface of the drive wheel 26, the traction member 27 is hung around the drive wheel 26 several times.
Goes through the pulley mechanism 25 along the guide roller 28,
They are linked to 1a respectively.

Then, when tension is applied to the traction member 27 by driving the drive wheels 26, the traveling carriages 21 and 21a travel on the rails 23 on the support beams 15, and the follower carriage 20 moves on the guide rails 17 on the lower movable roof 1.
The follower truck 20a travels on the guide rail 17 on the fixed roof 9 so that the movable roofs 11 and 13 are moved between the fixed roof 9 and the opening 19.

Note that the traction member 27 is not limited to the form in which it is wound around in an endless annular shape as described above, but the drive wheel 26 and the traveling carriages 21 and 21a may be connected in series in series. That is, with respect to the movement of the traveling carriages 21 and 21a when the opening 19 is opened,
The traveling carriages 21 and 21a are moved by utilizing the inclination of 15 and simply loosening the tension applied to the traction member 27 by freely rotating the drive wheel 26. In this case, one end of the traction member 27 is wound around the drive wheel 26,
The free end on the other end side is routed along the guide roller 28 on the lower side of the track bed 22 and wound around the pulley mechanism 25 from the lower side, and the pulling member 27 is reversed by the pulley mechanism 25 and the traveling carriage 21, It will be connected to 21a. When the movable roofs 11 and 13 close the opening 19, the drive wheels 26 are activated to wind the traction member 27. Even with such a configuration, the moving mechanism 24 can be configured without impairing the opening / closing operation.

Connection legs 29 are provided between the movable roofs 11 and 13 and the tracking vehicles 20 and 20a and the traveling vehicles 21 and 21a to connect them. In particular, the traveling carriages 21 and 21a travel on the same rail 23, while the following carriages 20 and 20a travel on the guide rails 17 and 17 having different heights on the fixed roof 9 and the lower moving roof 13, respectively. Since it will be traveling, the connection leg 29 on the traveling carriage 21 side for the upper movable roof 11 has a structure in which the inner cylinder is screwed into the outer cylinder and is configured to be height adjustable, The height can be adjusted by adjusting the screwing amount.

The overall configuration of the movable roofs 11 and 13 and the moving mechanism 24 is as described above. Hereinafter, referring to FIGS.
The braking mechanism 35, which is a feature of the present invention, will be described in detail together with the structure of the traveling mechanism of the traveling vehicle 21 (the traveling vehicle 21a has the same structure) by 27. In these figures, the track 22 is omitted.

The rails 23 are made of chevron steel, and a pair of rails 23 are attached to both sides of the upper end of the support beam 15 with their concave portions facing outward. The dolly 21 is a dolly frame 30 on which the upper movable roof 11 is placed.
And a pair of equalizer shafts 31 provided in front and rear of the bogie frame 30 so as to penetrate the bogie frame 30 left and right,
From a pair of left and right equilateral triangle-shaped equalizer side plates 32 whose tops are pivotally supported at the left and right ends of each of these equalizer shafts 31, and running wheels 33 rotatably supported at the bottom ends of the equalizer side plates 32, respectively. It is configured.

In addition, the equalizer side plate 32 is provided with a leg-shaped mounting bracket 51 that circulates from the shaft end portion of the equalizer shaft 31 to the outside of the rail 23 and hangs down to a position desired by the recess, and this mounting bracket 51 facing the recess of the rail 23 is provided. A stabilizer wheel, which is rotated by being in contact with the concave portion of the rail 23, is provided at the lower end portion of the bracket 51.
34 is pivotally supported. The braking mechanism 35 is arranged at the center position of the bogie frame 30 of the bogie 21 configured as described above.

The braking mechanism 35 is mainly configured to include a cylinder 36 as a tubular body and a piston 37 slidably provided inside thereof, and the cylinder 36 travels by a fixed frame 38 fixed to the bogie frame 30. It is attached along the traveling direction of the carriage 21.
The piston 37 is provided with piston rods 40 extending from both front and back sides along the axial direction of the cylinder 36, and both ends of the piston rod 40 are extended outward from end portals 39 at both ends of the cylinder 36. There is. Also piston rod
Threaded portions are formed at both ends of 40, and in particular, the threaded portion on the one end (opening side end) side of the traveling carriage 21 that is the leading side when closing the opening 19 is connected to the traction member 27. Knuckle
41 is fastened via a nut.

On the other hand, a lug plate 44 that rotatably supports a pivot shaft 43 that drives a braking piece 42, which will be described later, is screwed to the threaded portion at the opposite end of the piston rod 40.

The piston 37 having the piston rod 40 configured as described above is provided with a coil spring 45 provided between the piston 37 and the end portal 39 of the cylinder 36 on the knuckle 41 side.
The traveling carriage 21 is constantly urged toward the downward traveling direction.

A connecting piece 48 is rotatably supported on the lug plate 44 via the pivot shaft 43, and a pair of left and right eccentric cams 50 having a braking piece 42 are fixedly mounted on the connecting piece 48. The eccentric cams 50 are rotatably supported by a rotation center shaft 47 arranged at a position different from the pivot shaft 43 and rotated about the rotation center shaft 47. The rotation center shaft 47 is rotatably supported by the bogie frame 30 and a locking piece 46 described later. Therefore, the eccentric cam 50 is rotated around the rotation center shaft 47 by the movement of the lug plate 44 accompanying the movement of the piston rod 40. On the outer peripheral end surface of the eccentric cam 50 configured in this way, braking pieces 42 are cut and formed so as to face the pair of left and right rails 23 and serve as anti-slip teeth.

On the other hand, the bogie frame 30 is integrally provided with a pair of left and right plate-like locking pieces 46 corresponding to the positions where the braking pieces 42 are arranged. These locking pieces 46 are hung from both left and right sides of the bogie frame 30 above the braking pieces 42 to a position that detours the outside of the rail 23 and faces the recessed portion, and the hanging lower end portion is inserted into the recessed portion of the rail 23. It is bent like a hook. The hanging lower end portion, together with the braking piece 42, is configured to sandwich the rail 23 from above and below to exert a braking action.

The operation of the above configuration will be described. When the drive wheel 26 is activated and the winding of the traction member 27 is started, the activation shock is absorbed by the coil spring 45 in the cylinder 36. While the upper movable roof 11 is traveling to close the opening 19 by winding up the tow member 27, the compressed state of the coil spring 45 is maintained.

When the pulling member 27 is broken or the tension is lost in such a traveling state, the coil spring 45 in the cylinder 36 pushes the piston 37 back, and accordingly, the piston rod 40 moves in the traveling direction of the traveling carriage 21. Will be pushed to the opposite side. As a result, the connecting piece 48 is moved and the eccentric cam 50 is rotated counterclockwise around the rotation center axis 47, and the braking piece 42 of the eccentric cam 50 moves on the surface of the rail 23 in proportion to the biasing force of the coil spring 45. It bites and is locked to each other. At this time, the reaction force of the braking piece 42 biting into and contacting the rail 23 is a force for pushing up the traveling carriage 21, so that the hanging lower end portion of the locking piece 46 with respect to the rail 23 in the recess of the rail 23. As they come into contact with each other, both of them exert an effective braking action.

<Effect> As described in detail above, according to the safety device for a retractable roof according to the present invention, the bogie is run on the guide rail laid on the support beam, and the roof member is placed on the bogie to obtain the movable roof. ing. As a means for running the trolley, a traction member such as a belt, a chain or a metal rope is wound around a predetermined section of the guide rail, and the traction member is driven to pull the trolley. Therefore, the maintenance of the drive device is easier than that of a self-propelled carriage in which an electric motor is attached to the carriage itself.

Even if the tow member is broken, the truck can be braked by the braking piece that is pressed and locked to the guide rail and the locking piece that cooperates with the braking mechanism that drives this braking piece, and it is mechanically simple. Since it is composed of various mechanisms, it is easy to find a failure and there are few elements that cause it.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire openable roof, FIG. 2 is a side view illustrating a movable roof and a moving mechanism, and FIG. 3 shows a case where an embodiment of the present invention is applied to this. Side view,
4 is a right side view thereof, FIG. 5 is a schematic left side view thereof, and FIG.
The figure is a perspective view showing a part of the braking mechanism. 1-Openable roof, 3-side wall 5-peripheral beam, 7-annular beam 9-fixed roof, 11-upper movable roof 13-lower movable roof, 15-support beam 17-guidance Rail, 19 …… Opening 20,20a …… Following truck, 21,21a …… Traveling truck 22 …… Roadbed, 23 …… Rail 24 …… Movement mechanism, 25 …… Pulley mechanism 26 …… Drive wheel, 27… … Towing member 28 …… Guide roller, 29 …… Connecting leg 30 …… Bogie frame, 31 …… Equalizer shaft 32 …… Equalizer side plate, 33 …… Travel wheel 34 …… Stable wheel, 35 …… Braking mechanism 36 …… Cylinder, 37 ... Piston 38 ... Fixed frame, 39 ... End portal 40 ... Piston rod, 41 ... Knuckle 42 ... Braking piece, 43 ... Pivot shaft 44 ... Lug plate, 45 ... Coil spring 46 ...... Locking piece, 47 …… Rotation center shaft 48 …… Coupling piece, 50 …… Eccentric cam 51 …… Mounting bracket

Claims (2)

[Claims] 1. A guide rail laid along the axial direction of a support beam for supporting a roof, a dolly traveling on the guide rail, and a trolley supported by the dolly and directed from a storage position to a top opening of the roof. And a movable roof that can be freely moved, and belts, chains, metal ropes, etc. that are looped around the movable section of the movable roof along the guide rails in an endless ring shape along the guide rails. A towing member, a braking mechanism incorporated into the truck to press the braking piece against the guide rail in accordance with a looseness of tension of the towing member, and a braking piece of the braking mechanism that is integral with the bogie frame of the truck A safety device for a retractable roof, comprising: a locking piece extending from the trolley to the back of a guide rail, and a drive device for the traction member. 2. The braking mechanism includes a tubular body, a piston housed therein, a piston rod integrally projecting with the piston toward both ends of the tubular body, and one protruding end portion of the piston rod. The eccentric cam is rotatably supported, and the coil spring is housed in the cylindrical body and constantly biases the piston rod toward the eccentric cam. The pulling member is on the side opposite to the eccentric cam of the piston rod. The position where the eccentric cam is connected to the end and the cylinder is attached to the carriage is the position where the outer peripheral edge is pressed against the guide rail when the eccentric cam is rotated by the urging force of the coil spring in the cylinder. The safety device for the retractable roof according to claim 1, wherein a cam is used as the braking piece.