JP4173318B2 - Elevator landing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator landing apparatus provided with a closing device for preventing an expansion of a fire disaster via a hoistway caused by smoke or the like during a building fire.
[0002]
[Prior art]
FIGS. 5 to 7 are views showing a conventional elevator landing device, FIG. 5 is a cross-sectional plan view of an elevator hoistway, FIG. 6 is a front view of FIG. 5, and FIG. 7 is a longitudinal side view of FIG. is there. In the figure, 1 is an elevator hoistway, 2 is a landing opening in the hoistway 1, 3 is a three-sided frame that forms the edge of the entrance / exit of the landing 2, and 4 is a landing 2 that is provided on the hoistway 1 side of the three-way frame 3. Sliding doors 5 for opening / closing the entrance / exit are provided on the floor of the opening of the hall 2 entrance / exit so as to guide the lower edge of the sliding door 4.
[0003]
6 is an entrance / exit opening provided in the wall of the hoistway 1, and 7 is a guide rail that is provided along the vertical direction on the hoistway 1 side of the vertical frame of the three-way frame 3, and is in close contact with the vertical frame of the three-way frame 3 A guide groove 8 is provided on the surface of the hall 2 along the direction of exit / entry. A winding mechanism 9 is provided at the upper edge of the three-way frame 3 and has a rotation axis arranged horizontally. Reference numeral 10 denotes a closing body, which is a sheet-like material, a shutter or the like, and is made of a flexible plate-like material having at least one of fire disaster spreading prevention performance, that is, flame shielding performance and smoke shielding performance.
[0004]
Further, the closing body 10 is fitted with a gap formed in the guide groove 8 of the guide rail 7 corresponding to both edges in the direction of the entrance / exit entrance, and is manufactured to have a width covering the entrance / exit entrance, and a weight 11 is provided at the lower end. It is mounted, and is normally wound around the winding mechanism 9 and arranged at the raised position. Reference numeral 12 denotes a closing device constituted by the winding mechanism 9 and the closing body 10. Reference numeral 13 denotes a car that moves up and down the hoistway 1, and is provided with an entrance 14 that communicates with the landing entrance when facing the landing 2. Reference numeral 15 denotes a smoke detector provided on the ceiling of the hall 2.
[0005]
A conventional elevator landing device is configured as described above, and the three-way frame 3 is provided at the entrance / exit edge of the landing 2, and the entrance / exit of the landing 2 is opened and closed by the sliding door 4. Then, the closing body 10 of the closing device 12 is always wound around the winding mechanism 9 and arranged at the raised position, and is withdrawn from the entrance / exit of the landing 2. Then, when a fire occurs on the floor of the building where the hall 2 is provided, the smoke detector 15 operates to release the braking of the winding mechanism 9.
[0006]
As a result, the closing body 10 is guided by the guide rail 7 due to its own weight and the mass of the weight 11 and descends to close the entrance / exit of the landing 2 as shown in FIG. And the disaster prevention zone by the obstruction body 10 is formed in front of the sliding door 4 of the hall 2, and the fire and smoke intrusion to the hoistway 1 by the fire disaster expansion prevention performance of the obstruction body 10, that is, the flame insulation performance and the smoke insulation performance. Is to prevent.
[0007]
[Problems to be solved by the invention]
In the conventional elevator landing apparatus as described above, when a fire occurs on the floor on which the landing 2 is provided, the smoke detector 15 operates to lower the closing body 10. However, in this case, when there is a person near the sliding door 4 of the landing 2, there is a problem that the closing body 10 that descends hits the person or the person is pinched.
[0008]
The present invention has been made to solve such a problem, and to obtain an elevator landing device in which a closing body that descends at the time of a fire when a person is near the door of the landing does not descend to a lower area of the landing doorway. With the goal.
[0009]
[Means for Solving the Problems]
In the elevator landing apparatus according to the present invention, the sliding door that opens and closes the entrance / exit of the landing , the three-sided frame that forms the edge of the entrance / exit, and the winding shaft that is provided on the upper edge of the three-sided frame and the rotation axis is disposed horizontally. a closing device comprising a closure for closing the entrance mechanism and always consists flexible plate material having a fire disaster expansion prevention performance is lowered at the time of being wound around the winding mechanism is needed to take detects smoke from a fire At least one of a smoke sensor that operates and lowers the closure body of the closure device and a plurality of detection lines that are arranged in front of the lowered closure body and radiate to the upper and lower areas of the entrance and exit. The obstacle detection device that operates by detecting the obstacle at the entrance and exiting by being blocked , and when the smoke detector is activated, deactivates the detection line radiated to the upper area of the entrance and exit, and the smoke detector. Sensor is activated If when non obstacle detecting device actuated opens and closes abnormality control of the sliding door, when the obstacle detecting device when the smoke detector is activated is activated, and a control device which prevents the lowering of the closure, but Provided.
[0010]
Also, in the hall device elevator according to the invention, the alarm is provided, it is to urge the alarm through the operation of the smoke detector or obstacle detection apparatus.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
1 to 4 are diagrams showing an example of an embodiment of the present invention. FIG. 1 is a cross-sectional plan view of an elevator hoistway, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a longitudinal side view of FIG. 4 and 4 are flowcharts for explaining the operation of the control device in the elevator of FIG. In the figure, 1 is an elevator hoistway, 2 is a landing opening in the hoistway 1, 3 is a three-way frame that forms an edge of the landing 2 and forms a landing entrance, and 4 is a hoistway 1 side of the three-way frame 3. It is a sliding door that opens and closes the hall 2 entrance.
[0012]
5 is a sill provided corresponding to the floor surface of the entrance / exit opening of the hall 2 and guides the lower edge of the sliding door 4, 6 is an entrance / exit opening provided on the wall of the hoistway 1, and 7 is a guide rail, A guide groove 8 is provided on a surface along the vertical direction of the vertical frame of the three-way frame 3 along the vertical direction, in close contact with the vertical frame of the three-way frame 3, and along the entrance / exit direction of the landing 2. . An electric winding mechanism 9 is provided at the upper edge of the three-way frame 3 and has a rotation axis arranged horizontally.
[0013]
Reference numeral 10 denotes a closing body, which is a sheet-like material, a shutter, etc., which is manufactured by a flexible plate-like material having at least one of fire disaster spreading prevention performance, that is, flame shielding performance and smoke shielding performance. The edge is fitted in a guide groove 8 of the corresponding guide rail 7 with a gap, and is manufactured to have a width that covers the entrance / exit entrance, and a weight 11 is attached to the lower end. Taken and placed in the raised position. Reference numeral 12 denotes a closing device constituted by the winding mechanism 9 and the closing body 10.
[0014]
Reference numeral 16 denotes an obstacle detection device, a light emitter 17 provided on the guide rail 7 on one side of the hall 2 entrance, a light receiver 18 provided on the guide rail 7 on the other side of the hall 2 entrance, and an energized light emitter. A set of detection lines 19 is formed of light rays that are radiated from the horizontal direction 17 and are arranged on the front side of the lowered closure body 10, and a plurality of detection lines 19 including a plurality of sets such as the light emitters 17 are formed in the vertical direction. Are separated from each other, and at least one of the detection lines 19 is blocked to detect an obstacle at the entrance / exit of the hall 2 and operate.
[0015]
20 is provided on the guide rail 7 and is arranged corresponding to the light emitter 17 and the light receiver 18, the radiation hole of the detection line 19, 21 is an alarm device connected to a control device to be described later, and 15 is provided on the ceiling of the hall 2. The smoke detector is activated by detecting smoke at the hall 2. A control device 22 is connected to the closing device 12, the obstacle detection device 16, the smoke detector 15, the alarm device 21, and the control panel 23 of the elevator.
[0016]
In the elevator landing apparatus configured as described above, the three-way frame 3 is provided at the entrance / exit edge of the landing 2. Then, the elevator is operated by the elevator control panel 23, and the entrance / exit of the hall 2 is opened / closed by the sliding door 4. In addition, the closing body 10 of the closing device 12 is normally wound around the winding mechanism 9 and disposed at the raised position and is withdrawn from the entrance / exit of the landing 2.
[0017]
When a fire occurs on the floor of the building where the hall 2 is provided, the control device 22 controls the closing device 12, the obstacle detection device 16, and the like. Hereinafter, operations of the closing device 12, the obstacle detection device 16, and the like according to the function of the control device 22 will be described with reference to a flowchart shown in FIG. That is, if the smoke detector 15 is not operating in step 101, the process proceeds to step 102, and the normal operation control of the elevator is performed.
[0018]
Then, the process proceeds to step 103, and if there is a person near the sliding door 4 of the hall 2 and at least one of the detection lines 19 is blocked and the obstacle detection device 16 is activated, the process proceeds to step 104 and the closing operation of the sliding door 4 is stopped or reversed. Control is performed when the sliding door 4 opens / closes abnormally such as opening the door. Next, returning to step 103, if there is no person near the sliding door 4 of the hall 2 and the obstacle detection device 16 becomes inoperable, the routine proceeds to step 105, where normal sliding door 4 opening / closing control is performed.
[0019]
If a fire occurs on the floor of the building and the smoke detector 15 is activated in step 101, the routine proceeds to step 106, where the alarm device 21 is energized and a closing device lowering alarm is issued. Next, the routine proceeds to step 107, where the light emitter 17 of the obstacle detection device 16 is deenergized in the upper area of the hall 2 entrance / exit area, for example, about 1/3 of the upper area at the height of the hall 2 entrance / exit, and the light emitter 17 detects it. Line 19 disappears.
[0020]
Next, the routine proceeds to step 108 where a command to lower the closing device 12 is issued. In this case, the detection function of the obstacle detection device 16 is lost in the upper area of the landing 2 entrance. For this reason, the problem that the detection line 19 is blocked by the smoke that has risen at a high temperature and has flowed near the ceiling of the hall 2, the obstacle detection device 16 is activated, and the closure body 10 of the closure device 12 is not lowered is eliminated. The
[0021]
Accordingly, the closing body 10 of the closing device 12 is lowered without hindrance in the upper area of the hall 2 entrance. And the obstruction | occlusion body 10 obstruct | occludes at least the upper area of the entrance / exit 2 and prevents the smoke that has risen at a high temperature and flows near the ceiling of the entrance 2 from entering the hoistway 1. Thereby, when a fire occurs on the floor of a building, it is possible to suppress the expansion of a fire disaster caused by smoke or the like via the hoistway 1.
[0022]
Then, the process proceeds to step 109, and if the closing body 10 where the closing device 12 descends is descending in the lower area of the landing 2 entrance, for example, about 2/3 of the lower side of the height of the entrance 2 entrance, the process proceeds to step 110 and descends. If the closing body 10 to be placed is in the upper area of the hall 2 entrance, the process returns to step 108. In step 110, if there is a person near the sliding door 4 of the hall 2 and the obstacle detection device 16 in the lower area of the hall 2 entrance is activated, the routine proceeds to step 111 where the closing body 10 of the closing device 12 is lowered and stopped. The control of the closing device 12 such as energizing the take-off mechanism 9 to reverse and lift is performed, and the process returns to Step 110.
[0023]
If the obstacle detection device 16 in the lower area of the hall 2 entrance is not activated in step 110, the process proceeds to step 112, and if the closing body 10 of the closing device 12 is lowered and the hall 2 entrance is not fully closed, the process goes to step 110. Return to step 113 if the hall 2 entrance is fully closed. In step 113, the alarm device 21 is deactivated, and the closing device lowering alarm is stopped.
[0024]
In this way, when a fire occurs in the floor of the building where the hall 2 is provided, the closing body 10 of the closing device 12 is guided by its own weight and the mass of the weight 11 by the function of the control device 22 through the operation of the smoke detector 15. If it is guided by the rail 7 and descends and there is no person near the sliding door 4 of the hall 2, the entrance of the hall 2 is closed as shown in FIG. And the disaster prevention zone by the obstruction body 10 is formed in front of the sliding door 4 of the hall 2, and the fire and smoke intrusion to the hoistway 1 by the fire disaster expansion prevention performance of the obstruction body 10, that is, the flame insulation performance and the smoke insulation performance. prevent.
[0025]
In addition, when the smoke detector 15 is activated, the obstacle detection device 16 is turned off in the upper area of the entrance / exit of the hall 2, and the operation of the obstacle detection device 16 due to high-temperature smoke and the like is prevented. For this reason, the closing body 10 of the closing device 12 descends without being obstructed. Thereby, the obstruction body 10 obstruct | occludes at least the landing 2 entrance upper area, and the effect | action which prevents that the smoke which was high temperature and rose and flowed near the ceiling of the landing 2 penetrates into the hoistway 1 can be acquired.
[0026]
In addition, when the obstruction body 10 of the closing device 12 is descending in the lower area of the landing 2 entrance, when the obstacle detecting device 16 is activated due to an obstacle such as a person near the sliding door 4 of the landing 2, the closing device. The lowering of the 12 closures 10 is stopped or reversed and raised. As a result, it is possible to prevent the occurrence of a secondary disaster such as a fire in which the closing body 10 descends against a person near the sliding door 4 of the hall 2 or a person near the sliding door 4 of the hall 2 is caught.
[0027]
In the embodiment shown in FIGS. 1 to 4, the alarm device 21 is energized by the function of the control device 22 through the operation of the smoke detector 15 and the obstacle detection device 16. As a result, when a fire occurs on the floor of the building where the hall 2 is provided, the alarm 21 is activated only when there is a person near the sliding door 4 at the hall 2, and a fire occurs at the person near the sliding door 4 at the hall 2. It is also possible to easily notify and urge evacuation. Further, with such a configuration, it is possible to prevent the occurrence of a secondary fire disaster such as hitting the closing body 10 descending on a person near the sliding door 4 of the hall 2.
[0028]
【The invention's effect】
As described above, the present invention includes a sliding door that opens and closes the entrance / exit of the hall, a three-sided frame that forms an edge of the entrance / exit, and a winding mechanism that is provided on the upper edge of the three-sided frame and the rotation axis is disposed horizontally. and a closing device constantly made of a flexible plate-like member is made of a closure which closes the doorway lowered when taken up by the take-up mechanism needed with fire disaster expansion prevention performance, operation to detect smoke from fires At least one of the smoke sensor for lowering the occlusion body of the occlusion device and the plurality of detection lines arranged on the front side of the lowered occlusion body and radiated to the upper area and the lower area of the entrance / exit by, as well as operates to detect obstacles doorway, when the smoke detector is activated, the obstacle detection apparatus as dead de-energized the detected rays emitted in the upper area of the doorway, the smoke detector Failure when is not working If the sensing device is actuated opens and closes abnormality control of the sliding door, when the obstacle detecting device when the smoke detector is activated is actuated, is provided with a, and a control device which prevents the descent of the closure .
[0029]
As a result, when a fire occurs on the floor of the building where the landing is provided, the closing body of the closing device is lowered by the function of the control device through the operation of the smoke detector and closes the entrance / exit of the landing. And the disaster prevention area by the obstruction body is formed in front of the sliding door of the landing, and the fire disaster expansion prevention performance of the obstruction body, that is, the flame prevention performance, the action to prevent the invasion of smoke to the hoistway by the smoke insulation performance is obtained. be able to.
Further, the operation of the smoke detector deactivates the obstacle detection device in the upper area of the hall entrance and entrance, and the operation of the obstacle detection device due to high temperature smoke and the like is prevented. For this reason, the lowering operation of the closing body of the closing device is not obstructed, and at least the upper area of the landing doorway is closed, and the smoke that is hot and rises and flows near the ceiling of the landing enters the hoistway to cause a fire disaster Has the effect of preventing the enlargement.
Further, when the obstruction body of the obstruction device is descending in the lower area of the landing entrance, when the obstacle detection device is activated when a person is near the landing door, the obstruction body of the obstruction device is prevented from descending. For this reason, there is an effect of preventing the occurrence of a secondary disaster such as a fire in which a closing body hits a person near the sliding door of the landing or a person near the sliding door of the landing is caught.
[0030]
Further, the present invention is as described above, the alarm is provided, is to urge the alarm through the operation of the smoke detector or obstacle detection apparatus.
[0031]
In this way, when a fire occurs on the floor of the building where the landing is located, the alarm is activated only when there is a person near the sliding door at the landing, and the person near the sliding door at the landing is notified of the occurrence of the fire and prompted to evacuate. . And it has the effect of preventing the occurrence of secondary disasters such as fires such as hitting a closing body falling on a person near the sliding door of the landing .
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of the present invention and is a cross-sectional plan view of an essential part of an elevator hoistway.
FIG. 2 is a front view of FIG.
FIG. 3 is a vertical side view of FIG. 2;
FIG. 4 is a flowchart for explaining the operation of the control device in the elevator of FIG. 1;
FIG. 5 is a diagram showing a conventional elevator landing device, and is a cross-sectional plan view of the main part of the elevator hoistway.
6 is a front view of FIG. 5. FIG.
7 is a longitudinal side view of FIG. 6. FIG.
[Explanation of symbols]
2 landing, 3 three-way frame, 4 sliding door, 9 winding mechanism, 10 closing body, 12 closing device, 15 smoke detector, 16 obstacle detection device, 19 detection line, 21 alarm device, 22 control device.

Claims (2)

A sliding door that opens and closes the entrance of the landing,
A three-sided frame that forms the edge of the doorway ;
At all times made flexible plate-like member is wound on the take-up mechanism needed having provided with take-up mechanism the rotational axis is disposed horizontally and fire disaster expansion preventing performance over edge of the jamb A closing device composed of a closing body that descends and closes the doorway;
A smoke detector that operates by detecting smoke from a fire and lowers the closure of the closure device ;
It is arranged on the front side of the descending obstruction body and operates by detecting obstacles at the entrance and exit by blocking at least one of the plurality of detection lines radiated to the upper and lower areas of the entrance and exit. And , when the smoke detector is activated, an obstacle detection device that deactivates the detection line radiated to the upper area of the entrance and exits, and
When the obstacle detector is activated when the smoke detector is not activated, the sliding door is controlled to be opened or closed abnormally, and when the obstacle detector is activated when the smoke detector is activated, A control device that prevents the closure body from descending ;
Elevator landing equipment equipped with. The elevator landing device according to claim 1, further comprising an alarm device, wherein the alarm device is activated when a smoke detector or an obstacle detection device is activated.

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