JP2012188228A - Apparatus for closing door of elevator, elevator, and method for closing door of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for closing a door of an elevator, an elevator, and a method for closing the door of the elevator, capable of closing up a landing-side door upon disaster without using electric power.SOLUTION: The apparatus for closing the door of the elevator includes: a first weight that is installed on the landing-side door of the elevator and urges in a direction where the landing-side door is closed under own weight; a second weight that applies own weight so as to urge in an urging direction of the first weight upon the free falling; an opening device that supports the second weight so that the second weight does not fall off; and a driving device that drives the opening device to cause the second weight to fall off.

Description

  Embodiments described herein relate generally to an elevator closing device, an elevator, and an elevator closing method.

  The elevator landing side door is engaged with the cage room side door by the engaging device, and the landing side door is opened and closed following the opening and closing of the cage room side door. When the door is closed, the engaging device is disconnected immediately before closing, and the landing side door is closed by the self-closing force of the closing device.

  In order to ensure safety, the elevator is configured not to be locked unless the car room side door and the landing side door are closed, and the elevator cannot be operated because the closing sensor is not switched on.

  However, a draft may occur during a disaster such as a fire, and a situation may occur in which a landing door cannot be closed with a conventional closing device.

  In this regard, a self-closing device has been proposed in which a closing weight is supported by a solenoid, the weight is opened when power supply is interrupted, and the landing side door is closed by a force of dropping the weight.

JP 2004-315207 A

  However, according to this technology, if a power failure occurs at a time other than at the time of a disaster, the self-closing device operates, and a situation occurs in which a recovery operation must be performed for each floor when power is restored.

  Therefore, an object of the present embodiment is to provide an elevator closing device, an elevator, and an elevator closing method capable of closing a landing-side door at the time of a disaster without using electric power.

  In order to solve the above-described problems, an embodiment includes a cage room, a weight, a rope that lifts the cage room and the weight, a hoist that winds the rope, a hoistway that raises and lowers the cage room, and a landing side door. The first weight is installed on the elevator landing side door and urges in the direction of tightening the landing side door by its own weight, and the first weight is applied to urge the first weight in the biasing direction when falling. There is provided an elevator including an elevator including a weight of 2, an opening device that supports the second weight so as not to fall, and a driving device that drives the opening device to drop the second weight.

It is a side view of an elevator. It is the figure which looked at the landing side door which has an elevator closing device from the hoistway side. It is a figure which shows the state which a landing side door opens halfway and does not close. It is a figure which shows the state by which the towline was pulled and the 2nd weight was released. It is a figure which shows the 1st example of an opening | release apparatus. It is a figure which shows the 2nd example of an opening apparatus. It is a figure which shows the relationship of the magnitude | size of a 2nd weight and a sleeve.

  Hereinafter, one embodiment of an elevator closing device, an elevator, and an elevator closing method will be described in detail with reference to the drawings.

  One embodiment of the elevator of the present embodiment includes a cage room, a weight, a rope that lifts the cage room and the weight, a hoist that winds up the rope, a hoistway that raises and lowers the cage room, a landing-side door, and an elevator A first weight that is installed on the landing-side door and urges in a direction to tighten the landing-side door by its own weight, and a second weight that applies its own weight so as to urge in the urging direction of the first weight when falling And an opening device that supports the second weight so as not to fall, and a drive device that drives the opening device to drop the second weight.

  FIG. 1 is a side view of an elevator 100 according to the present embodiment. As shown in FIG. 1, the elevator 100 includes a cage room 101 in which passengers are placed, a weight 103, a rope 106 that lifts the cage room 101 and the weight 103, a hoisting machine 102 that winds up the rope 106, and the cage room 101 moves up and down. A hoistway 110, a landing-side door 104, a step unit 105 installed below the landing-side door 104, and a control unit 107 that controls the operation of the elevator.

  The basket room 101 includes a basket room side door 101A and an engagement device 101B installed on the hoistway 110 side of the basket room side door 101A.

  The landing-side door 104 includes a protrusion 104P that engages with the engagement device 101B on the hoistway 110 side.

  The control unit 107 raises and lowers the basket room 101 to the designated destination floor. When the basket room 101 arrives at the destination floor, the engagement device 101B and the protrusion 104P are engaged. When the cage room side door 101A opens and closes in this state, the landing side door 104 follows and opens and closes.

  FIG. 2 is a view of the landing side door 104 having the elevator closing device as seen from the hoistway 110 side. As shown in FIG. 2, the elevator 100 has a landing-side door 104 that closes an opening of the elevator landing. The landing-side door 104 includes, for example, a first door 104A that opens and closes at a low speed, a second door 104B that opens and closes at a high speed, a rail 201 installed at the top of the opening of the landing, and an endless wire 202C. And a first roller 202A and a second roller 202B that wrap around the wire 202C.

  The first door 104A includes a first engagement plate 204A that lifts the first door 104A at an upper end portion, and an opening / closing member 205 that is locked to the first engagement plate 204A and opens and closes the first door 104A.

  The second door 104B includes a second engagement plate 204B that lifts the second door 104B at the upper end, and a locking member 203 that is locked to the second engagement plate 204B and the wire 202C.

  The first engagement plate 204A and the second engagement plate 204B are connected to the drive wire and the pulley. When the basket chamber side door 101A is opened and closed, the second door 104B is opened and closed. When the second door 104B opens and closes, the first door 104 follows the second door 104B and opens and closes via the drive wire and the pulley.

  The opening / closing member 205 includes a closing wire 206 on the side. The closing wire 206 connects the first weight 207. The first weight 207 biases the landing side door 104 in the closing direction. The first weight 207 moves up and down inside the sleeve 208.

  Immediately before the landing-side door 104 is completely closed, the engagement device 101B and the protrusion 104A are detached. At this time, since the first weight 207 is biased in the direction in which the landing-side door 104 is closed, the landing-side door 104 is closed by this self-closing force.

  The landing-side door 104 further includes an opening device 302 installed on the frame 109. The landing-side door 104 is inserted into the closing wire 206 inside, the second weight 301 supported by the opening device 302, and one end locked to the frame of the landing-side door 104, for example, and the upper part of the opening of the landing A pulling rope 303 that is a drive mechanism that is installed across the cable, and an opening device 302 that is installed at the other end of the pulling rope 303 and opens and drops the second weight 301 when the pulling rope 303 is pulled.

  FIG. 3 is a diagram illustrating a state where the landing-side door 104 is half open and does not close. As shown in FIG. 3, the landing-side door 104 may not be closed due to a draft caused by a fire entering from the opening 108.

  When this happens, the passenger pulls the towline 303. When the towline 303 is pulled, the second weight 301 is released by the opening device and falls.

  FIG. 4 is a view showing a state in which the towline is pulled and the second weight 301 is released. As shown in FIG. 4, the second weight 301 freely falls downward along the closing wire 206. When the second weight 301 falls and overlaps the first weight 207, the closing wire 206 has a mass obtained by adding the mass of the first weight 207 and the mass of the second weight 301 to each other. Is pulled in the direction of arrow X2.

  Accordingly, the self-closing force of the landing-side door 104 is increased, and the landing-side door 104 can be closed.

  FIG. 5 is a diagram illustrating a first example of the opening device 302. As shown in FIG. 5, the opening device 302 is pivotally locked to the frame 109 by a locking pin 401 that supports the second weight 301 so as not to drop, and a fulcrum 405 provided on the bent portion. The locking pin 401 is pivotally connected to the arm portion 405 whose other end is connected to the towline 303, and the locking pin 401 is inserted, and the movement of the second weight 301 is caused when the locking pin 401C is displaced. And a stopper 403 that regulates and removes the locking pin 401 from the second weight 301.

  The arm unit 405 includes a first arm 405A and a second arm 405B. The towline 303 is connected to the tip of the first arm 405A, and the locking pin 401 is connected to the tip of the second arm 405B.

  The second weight 301 includes an insertion hole 402 through which the locking pin 401 is inserted, and a guide hole 301A through which the closing door wire 206 is inserted.

  The locking pin 401 supports the second weight 301 so that the second weight 301 does not fall by inserting the tip into the insertion hole 402.

  When the towline 303 is pulled in the direction of the arrow X4, the arm portion 405 rotates around the fulcrum 405C. When the arm portion 405 rotates, the locking pin 401 is pulled out from the insertion hole 402 in the direction of the arrow X5. When the locking pin 401 is pulled out, the second weight 301 freely falls along the closing door wire 206 inserted through the guide hole 301A.

  FIG. 6 is a diagram illustrating a second example of the opening device 302. As shown in FIG. 6, the opening device 302 includes a locking pin 401 that supports the second weight 301 so as not to fall, a pulley 408 that hangs a towline 303 connected to one end of the locking pin 401, And a stopper 403 that regulates the movement of the second weight 301 and removes the locking pin 401 from the second weight 301 when the pin 401 is inserted and the locking pin 401 is displaced.

  The second weight 301 includes an insertion hole 402 through which the locking pin 401 is inserted, and a guide hole 301A through which the closing door wire 206 is inserted.

  The locking pin 401 supports the second weight 301 so that the second weight 301 does not fall by inserting the tip into the insertion hole 402.

  When the towline 303 is pulled in the direction of the arrow X6, the locking pin 401 is pulled out from the insertion hole 402. When the locking pin 401 is pulled out in the direction of the arrow X7, the second weight 301 freely falls along the closing door wire 206 inserted through the guide hole 301A.

  FIG. 7 is a diagram illustrating a relationship in size between the second weight 301 and the sleeve 208. As shown in FIG. 7, the outer diameter φ1 of the second weight 301 is smaller than the inner diameter φ2 of the sleeve 208.

  Therefore, the second weight 301 that has fallen freely can fall until it reaches the first weight 207.

  As described above, the elevator closing device of the present embodiment is installed on the landing-side door 104 of the elevator 100, and freely falls with the first weight 207 that urges the landing-side door 104 in the direction to be tightened by its own weight. A second weight 301 for applying its own weight so as to bias the first weight 207 in the biasing direction, an opening device 302 for supporting the second weight 301 so as not to drop, and driving the opening device 302. And a driving device for dropping the second weight 301.

  Therefore, according to this embodiment, there is an effect that the landing side door can be closed at the time of a disaster without using electric power.

  Although several embodiments have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

101: basket room 102: hoisting machine 104: landing side door 105: step unit 107: control unit 207: first weight 301: second weight 302: opening device

Claims (7)

A first weight that is installed on a landing door of the elevator and urges in a direction to close the landing door by its own weight;
A second weight that applies its own weight so as to be biased in the biasing direction of the first weight when dropped;
An opening device for supporting the second weight so as not to fall;
A driving device for driving the opening device to drop the second weight;
Elevator closing device. The driving device includes:
It is a towline that runs over the opening of the platform,
The opening device is
A locking pin that is inserted through an insertion hole of the second weight and supports the second weight so as not to fall;
An arm that has a bent shape, is pivotably locked to the frame of the landing-side door device by a fulcrum provided at the bent portion, and that the locking pin is pivotally connected to one end and the other end is connected to the pulling rope. And
A stopper that inserts the locking pin and restricts the movement of the second weight when the locking pin is displaced, and removes the locking pin from the second weight;
The elevator closing device according to claim 1 provided with. The driving device includes:
It is a towline that runs over the opening of the platform,
The opening device is
A locking pin that is inserted through an insertion hole of the second weight and supports the second weight so as not to fall;
A pulley for hanging the towline connected to one end of the locking pin;
A stopper that inserts the locking pin and restricts the movement of the second weight when the locking pin is displaced, and removes the locking pin from the second weight;
The elevator closing device according to claim 1 provided with. A basket room,
A weight,
A rope for lifting the basket chamber and the weight;
A hoisting machine for hoisting the rope;
A hoistway in which the basket room moves up and down;
A landing door,
A first weight that is installed on a landing door of the elevator and urges in a direction to close the landing door by its own weight;
A second weight that applies its own weight so as to be biased in the biasing direction of the first weight when dropped;
An opening device for supporting the second weight so as not to fall;
A driving device for driving the opening device to drop the second weight;
Elevator equipped with. The driving device includes:
It is a towline that runs over the opening of the platform,
The opening device is
A locking pin that is inserted through an insertion hole of the second weight and supports the second weight so as not to fall;
An arm that has a bent shape, is pivotably locked to the frame of the landing-side door device by a fulcrum provided at the bent portion, and that the locking pin is pivotally connected to one end and the other end is connected to the pulling rope. And
A stopper that inserts the locking pin and restricts the movement of the second weight when the locking pin is displaced, and removes the locking pin from the second weight;
An elevator according to claim 4. The driving device includes:
It is a towline that runs over the opening of the platform,
The opening device is
A locking pin that is inserted through an insertion hole of the second weight and supports the second weight so as not to fall;
A pulley for hanging the towline connected to one end of the locking pin;
A stopper that inserts the locking pin and restricts the movement of the second weight when the locking pin is displaced, and removes the locking pin from the second weight;
An elevator according to claim 4. Support the second weight not to fall by the opening device,
The opening device is driven by the driving device to drop the second weight,
Added to the weight of the second weight so as to be biased in the biasing direction of the first weight that is installed in the landing door of the elevator and biased in the direction of tightening the landing door by its own weight,
An elevator door closing method for closing the landing door.

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