JPH09279940A - Door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a driving means smaller and avoid the stepped shape of a door being fully closed, when the door is open/closed with the driving means in the state that load is reduced by a balancing elastic body. SOLUTION: A balancing elastic body 12 provided in the lengthwise direction in opposition to the oscillation supporting shaft of a door 7 consists of plural compressively elastic units 12a, which interferes on the way of closing the door 7 until it is in a closed attitude. The compressively elastic units 12a are arranged to be deviated to one end, where a driving motor 9 for the oscillation supporting shaft 8 is provided, not to exist at the other end, so that accumulated energy unevenly distributed at one end can be applied to the door 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door body that is opened and closed from a horizontal posture to a standing posture, and particularly belongs to a technical field of a door body provided in a tunnel through which transportation means such as roads and railways pass. It is a thing.

[0002]

2. Description of the Related Art Conventionally, there is a door body which is swingably supported by a swing support shaft so as to be opened and closed from a substantially horizontal horizontal posture to a substantially vertical standing posture. It is attempted to install such a door at the opening to the evacuation passage for evacuating from the roadway in the tunnel to the outside. In this case, in the tunnel, there are provided a roadway for vehicles to pass through, an evacuation passage located below the roadway, and a step-like high monitoring passageway beside the roadway, and a part of the monitoring passageway is provided. It has already been proposed to make the door openable and closable so that the evacuation route from the roadway to the evacuation route can be opened. A driving means for driving the door forward and backward so that the door body is opened and closed by a driving force, a power transmission means for interlocking and coupling the power of the driving means to one end side of the swing support shaft, and the opening posture. A balance ammunition that is stored and balanced as it changes from a closed posture to a closed posture, and the door body is opened and closed while the load on the drive means is reduced by the balance ammunition. No. 167198.

[0003]

By the way, in the door body, as shown in FIG. 7, the self-weight lowering force changes with a sine curve as the closing angle θ changes, whereas the balance bullet has a linear shape. In order to balance them in the entire opening and closing operations, the force stored by the balance ammunition in the horizontal state is set to be larger than the weight lowering force of the door body (the straight line in FIG. 7). W) is common. However, if the door is left as it is, the door body receives the energy stored by the balance ammunition in the upright posture and is stored in the horizontal posture side, and if it is left as it is, it is not stable because it naturally transforms to the descent side. Therefore, it is proposed to prevent the stored force of the balance ammunition from working in the upright position, but in this way, the drive efficiency of the motor drive force is optimized by balancing with the weight lowering force of the door body. In order to do so, the change in the stored force of the balance ammunition should be changed rapidly as shown by the straight line Y in FIG.
The change in motor torque is set to curve Z. However, in this way, the force of the balance bullet in the horizontal position is larger than that in the general state where the balance weapon is used, and the door body in the horizontal position is in a standing position from the balance armor. You will receive urging force in the direction, and you will lock this. However, since a plurality of conventional balance bullets are evenly arranged in the length direction of the swing support shaft, one end side that is interlocked with the drive means receives a lock force when in the horizontal state. However, there is a thing that the other end side is lifted a little due to the accumulated force of the balance ammunition, in this case,
There is a problem that the monitoring passage becomes stepped,
Here, there was a problem to be solved by the present invention.

[0004]

The present invention has been made in view of the above circumstances in order to solve these problems, and it is opened and closed from a substantially horizontal horizontal posture to a substantially vertical standing posture. A door body swingably supported by a swing support shaft so as to transform, a drive means for driving the drive body in forward and reverse directions, and one end of the swing support shaft for driving the drive means. A power transmission means for interlocking connection to the side, and a balance ammunition that is stored and balanced as the posture changes from the standing posture to the horizontal posture are provided. It is set so as to have a storing force larger than its own weight lowering force, and the storing force is set to be unevenly distributed on one end side of the swing support shaft. This makes it possible to reduce the size of the driving means and eliminate the problem that one end of the fully closed door body is lifted to form a step. In this case, in the present invention, the balance ammunition can be composed of a plurality of ammunition arranged along the support shaft length direction. Furthermore, in this structure, the plurality of bullets can be set to be biased toward one end side so that the stored force is unevenly distributed on one end side of the swing support shaft.

[0005]

FIG. 1 shows an embodiment of the present invention.
~ It demonstrates based on the drawing shown in FIG. In the drawing,
Reference numeral 1 is a tunnel (tunnel), and in the tunnel 1, a roadway 2 through which transportation means such as vehicles and railroads pass,
It has an upper and lower two-layer structure in which evacuation passages 3 are formed on the lower side so as to pass through when a person evacuates out of the tunnel 1 in an emergency such as a fire. A monitoring passage 4 is formed on one side of the road 2 and has a stepped height with respect to the road surface of the road 2. The monitoring passage 4 extends from the road surface to the side surface on the vehicle side. A notched notch portion 4a is formed, and this notch portion 4a serves as an evacuation path (for example, having a stepped shape or a downhill shape) 5 for evacuating from the upper road 2 to the lower evacuation passage 3. The evacuation opening 4a is set so that it can be evacuated to the evacuation passage 3 from the evacuation opening 4a through the evacuation path 5 in the event of an emergency such as a fire. The safety in the tunnel 1 is ensured by being formed in a plurality of places at appropriate intervals in the monitoring passage 4. In addition to the evacuation passage 3, two passages are formed in the area formed below the tunnel 1, and a cable such as an electric wire is laid in these passages.
It can be used for an appropriate passage.

Reference numeral 6 denotes an evacuation door which is provided at the evacuation opening (notch) 4a so as to be openable and closable, and the evacuation door 6 is movable in the traveling direction of the vehicle and opens and closes the evacuation opening 4a. Although the evacuation door 6 is of a type, the escape door 6 is formed in a substantially L-shape by a side plate 6a forming a side surface corresponding portion of the monitoring passage 4 and a ceiling plate 6b forming a road surface corresponding portion of the monitoring passage 4. In addition, although it is closed by an unillustrated self-closing device in an openable state, details of these configurations will be omitted.

A bar 7 is provided above the closed escape door 6 and reinforces the monitoring passage in a portion corresponding to the escape door 6, and the upper surface of the door 7 A swing support shaft 8 is integrally provided on the base end edge side, and the swing support shaft 8 is supported by a bearing bracket 1b provided on the tunnel side wall 1a, whereby the door body 7 becomes the evacuation door ceiling plate 6b. It is set so as to swing and transform from a closed posture in which it is positioned in a stacked manner on the upper surface and is substantially horizontal to an open posture in which it stands up and becomes substantially vertical. Here, the open posture is an obtuse angle state that exceeds 90 degrees with respect to the closed posture, and care is taken so that the door body 7 does not fall to the closed posture in a natural state. In addition, the sprocket 8a is attached to one end of the swing support shaft 8 protruding from the door body 7.
Is provided, and the transmission chain 10 is suspended between the sprocket 8a and the output shaft 9a of the drive motor 9 provided on the body side of the tunnel 1. And the door body 7
Is set so that the opening / closing operation is automatically performed based on the forward / reverse rotation of the swing support shaft 8 associated with the forward / reverse drive of the drive motor 9.

Further, a support plate 11 having a substantially inverted L-shaped cross section is provided on the tunnel side wall 1a facing the swing support shaft 8. The support plate 11 urges the door body 7 in the opening direction. A balance ammunition 12 is provided for this purpose. The balance ammunition 12 is composed of a plurality of compression ammunition 12a. An upper end of each of these compression ammunition machines 12a is integrally fixed to a bracket 11a fixed to the support plate 11, and a hitting member 12b is provided at a lower end of the compression ammunition machine 12a in a natural state.
On the other hand, on the door body 7, the receiving member 7a is located on the door base edge side.
Is fixed. Then, in the process from the open position to the closed position of the door body 7, at the stage where the door body 7 crosses the vertical line and closes to a predetermined position (angle) A, the receiving member 7
The a is brought into contact with the abutting member 12b and interferes with each other. When the door 7 is closed further, the balance ammunition 12 is set to be compressed and stored.

Here, the self-weight closing force of the door body 7 is such that the closing angle, which is the displacement angle from the open position to the closed position with the horizontal line as the reference line, is 0 ° from the standing (fully open) position to the 90 ° closed (fully closed) position. ) When the body is transformed into a posture, it is approximated to a curve X of approximately sine as shown in FIG. In contrast,
The balance bullet 12 has a larger compression amount as the door 7 is closed beyond the predetermined angle A, and thus the stored force is approximated to the straight line Y and increases. A little closer to the closed position (for example, an angle of about 20 degrees)
The stored force when reaching B is set to balance (balance) with the self-weight closing force of the door body 7, and further closing of the door body 7 is in a state of resisting the balance ammunition 12 in the drive motor. 9 is driven. In FIG. 7, the load of the drive motor 9 when opening and closing the door 7 is
The load curve Z is obtained as a difference between the self-weight closing force of the door body 7 and the accumulating force of the balance ammunition 12. The load curve Z changes from the standing posture to the angle A according to the change of the self-weight lowering force of the door body 7 and thereafter. Is obtained as the difference, and the load direction is reversed at the angle B. By setting in this way, the stored force of the balance ammunition 12 and the dead weight force of the door body 7 are fully closed. The drive motor 9 is set to be small in size and small in torque as compared with the case where the setting is balanced in the state.

Further, the plurality of compression munitions 12a constituting the balance munitions 12 are not evenly distributed over the entire axial length direction of the swing support shaft 8 but are arranged in the drive motor 9
Is provided so as to be unevenly distributed on one end side, that is, in the present embodiment, it is arranged so as to be biased to one end side and not on the other end side. When 12 is compressed, its energy storing force is set to be unevenly distributed on one end side.

Further, a reinforcing beam 7b is integrally formed at the front edge of the door 7 in a state orthogonal to the door surface, while the reinforcing beams 7b are received by the skeletons located on the left and right sides of the evacuation door 6. The supporting portion 1c for stopping and supporting is formed with a notch, and the door body 7
In the fully closed state, the door body 7 is configured to be supported by the skeleton body.
It is considered that the evacuation door 6 can be opened lightly even when the door body 7 is closed because there is no interference such as the application of load. Moreover, since the reinforcing beam 7b is orthogonal to the door surface in this way, when a vehicle traveling on the road 2 collides with the fully closed door body 7, the impact can be received by the plate surface. As a result, a cushioning action against damage to the door body 2 side can be achieved.

In the embodiment of the present invention configured as described above, when an emergency such as a fire occurs in the tunnel 1 and a person in the tunnel evacuates, the closed evacuation door 6 is operated. While you can open the evacuation opening 4a at this point, and then escape from here to the evacuation passage 3 through the evacuation passage 5,
When performing work such as cleaning, the work vehicle travels through the monitoring passage 4, but in such a case, the door body 7 is closed while the work implement is carried out to the monitoring passage 4. When a worker goes in and out, the door 7 is opened so that the worker does not go in and out of the road 2, and traffic is not hindered.

As described above, the door body 7 can be opened and closed as necessary, but the balance bullet 12 for balancing by receiving the own weight closing force of the door body 7 is interlocked with the drive motor 9. Therefore, even if the door body 7 is closed by the driving force of the drive motor 9 against the stored force of the balance bullet 12, the balance bullet is evenly distributed. It is possible to prevent the other end side of the door body 7 from being lifted up into a stepped state like a thing.

The present invention is not limited to the above-mentioned embodiment, but as a method of constructing the balance ammunition so that the stored force is unevenly distributed on one end side of the swing support shaft,
The ammunition can be arranged so that one end side linked to the drive motor is densely arranged and the other end side is sparsely arranged. You may adopt a weak one. Further, it goes without saying that various types of balance ammunition such as a tension ammunition, a torsion ammunition, etc. can be adopted as well as a compression ammunition.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a tunnel.

FIG. 2 is a perspective view of an evacuation door and a door body built in a monitoring passage.

FIG. 3 is a schematic side view illustrating an opening / closing operation of a door body.

FIG. 4 is a side view of an essential part for explaining the action of the balance ammunition.

FIG. 5 is a perspective view in which the balance ammunition is removed and the evacuation door is fully closed.

FIG. 6 is a perspective view in which the balance ammunition is removed and the evacuation door is in a front open state.

FIG. 7 is a graph illustrating a balance state of the deadweight closing force of the door body, the accumulating force of the balance ammunition, and the driving force of the drive motor.

[Explanation of symbols]

 1 Tunnel 2 Roadway 4 Monitoring Passage 4a Evacuation Port 5 Evacuation Route 6 Evacuation Door 7 Door Body 7a Receiving Member 7b Reinforcing Beam 8 Swing Spindle 8a Sprocket 9 Drive Motor 10 Transmission Chain 11 Support Plate 12 Balance Ammunition 12a Compressed Bullet Machine 12b Abutment member

Claims (3)

[Claims] 1. A door body swingably supported by a swing support shaft so as to open and close from a substantially horizontal horizontal posture to a substantially vertical standing posture. Driving means for driving, power transmission means for interlocking and connecting the power of the driving means to one end side of the swing support shaft, and a balance ammunition that is stored and balanced as the posture changes from the standing posture to the horizontal posture. And the balance bullet is set to have a force larger than the self-weight lowering force of the door body in the horizontal state, and the force is applied to one end side of the swing support shaft. A door that is set to be unevenly distributed. 2. The door body according to claim 1, wherein the balance ammunition is composed of a plurality of ammunition arranged along the longitudinal direction of the support shaft. 3. The door body according to claim 2, wherein the plurality of bullets are arranged so as to be closer to one end side so that the stored force is unevenly distributed to one end side of the swing support shaft.