JP2012180136A - Elevator control apparatus, elevator and method for waterproofing elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator control apparatus that can operate as an emergency elevator in case of fire because water used for fire fighting in case of fire is less likely to be splashed on a control board, and to provide an elevator and a method for waterproofing the elevator.SOLUTION: The elevator includes: a winch; a waterproof cover for the winch to be made waterproof; a control unit that is installed above a landing side door of a top floor in a hoistway and controls elevator operation; a waterproof cover for the control unit to be covered; and a device for disconnecting a main power of the landing side, the device interrupting the power supplied to the device of the landing side when fire extinguishing conditions are satisfied.

Description

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

  In recent years, machine room-less elevators without machine rooms have become mainstream. A conventional machine roomless elevator has a control panel at a position where it can be easily operated from the landing. For example, a conventional control panel is installed on the back side of a call button on the landing side.

  In such a conventional machine roomless elevator, there is a possibility that water for fire extinguishing will hit the control panel and break the control panel during fire extinguishing activities in the event of a fire. Therefore, the conventional machine room-less elevator cannot be used as an emergency elevator in the event of a fire.

  In this regard, a technique for covering the control panel with a waterproof cover has been proposed.

JP 2008-44773 A

  However, if the waterproof cover is thermally deformed by the heat of a fire, the waterproof effect may be reduced.

  Therefore, an object of the present embodiment is to provide an elevator control device that can be operated as an emergency elevator even during a fire, and a waterproofing method for the elevator.

  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. An elevator provided above the landing door on the top floor inside the hoistway and provided with an elevator control device that controls the operation of the elevator and a control unit waterproof cover that covers the elevator control device in a waterproof manner To do.

It is a side view of an elevator. It is a perspective view of the uppermost floor part of an elevator apparatus. It is a figure which shows the structure of a landing side main power supply disconnection apparatus. It is a timing chart which shows operation | movement of a timer.

  Hereinafter, an elevator control device, an elevator, and an elevator waterproof method according to an embodiment 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 car room, a landing side door, and a hoistway And an elevator control device that controls the operation of the elevator and a control unit waterproof cover that covers the elevator control device in a waterproof manner.

  FIG. 1 is a side view of an elevator 100 according to the present embodiment. As shown in FIG. 1, the elevator 100 covers 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 hoists the rope 106, and a hoisting machine 102. A hoisting machine waterproof cover 102A, a hoistway 110 in which the car room 101 is raised and lowered, a landing side door 104, a step portion 105 installed below the landing side door 104, and a landing on the uppermost floor inside the hoistway 110 A control unit 107 that is installed above the side door and controls the operation of the elevator is provided, and a control unit waterproof cover 107A that covers the control unit 107 is provided.

  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 104A 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 engaging device 101B and the protrusion 104A 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.

  The control unit 107 is preferably installed above the uppermost landing door on the inside of the hoistway 110 from the viewpoint of ease of work. In addition, it is desirable that the control unit 107 be formed in a horizontally long shape in order to reduce the installation space.

  Since the control unit 107 is installed above the landing-side door on the uppermost floor inside the hoistway 110, specifically, the opening of the landing-side door, water for fire extinguishing is hardly applied.

  FIG. 2 is a perspective view of the uppermost floor portion of the elevator apparatus 100. As shown in FIG. 2, the winder 102 is covered with a winder waterproof cover 102A.

  The winder waterproof cover 102A accommodates the entire winder 102 in a waterproof manner. The winder waterproof cover 102A is formed of a heat resistant resin or metal. The hoisting machine waterproof cover 102A has a rope hole 102B through which the rope 106 is inserted on the bottom surface. The hoisting machine waterproof cover 102A has a cord insertion hole 102C through which a power cord and the like are inserted. The cord insertion hole 102C is sealed so as to be waterproof by packing or caulking after the power cord is inserted.

  The control unit waterproof cover 107A accommodates the control unit 107 in a waterproof manner. The control unit waterproof cover 107A is formed of a heat resistant resin or metal. The control unit waterproof cover 107A has a cord insertion hole 107C through which a power cord and the like are inserted. The cord insertion hole 107C is sealed so as to be waterproof by packing or caulking after the power cord or the like is inserted.

  The control unit waterproof cover 107A includes a lid 107E that is opened when the control unit 107 is operated, and an open alarm device 107B that detects the opening of the lid 107E.

  The opening alarm device 107B includes a sensor that detects the opening of the lid 107E, and a buzzer that emits a sound when the sensor detects the opening of the lid 107E.

  The control unit 107 includes, for example, a control circuit, a main circuit, an external line interface, and a regenerative resistor that converts electric power generated during regeneration into heat energy.

  Here, when the size of the control unit 107 is large and does not fit above the landing side door inside the hoistway 110, the regenerative resistor 107D is stored in another waterproof case as shown in FIG. It is also possible to arrange the path 110 on a surface other than the surface where the control unit 107 is installed.

  FIG. 3 is a diagram illustrating a configuration of a landing-side main power supply disconnecting device. As shown in FIG. 3, the elevator apparatus 100 includes a landing-side main power supply disconnecting device that turns off the landing-side power supply when a firefighting operation condition that is a condition for performing a firefighting operation is satisfied.

  The fire-fighting operation condition is satisfied when a signal indicating the occurrence of a fire is input to the control unit 107, such as when the control unit 107 inputs a signal from a fire alarm or when an alarm device in the basket room 101 is pressed. It is.

  The landing-side main power supply disconnecting device includes a main switch 301, an inverter 304 that supplies power to the motor 305 of the hoisting machine 102, and a first switch unit 302B that is installed on the landing side and supplies or stops power to the inverter 304. And a second switch unit 303B of the second contactor 303 installed in parallel with the first switch unit 302B of the first contactor 302.

  Further, the landing-side main power supply disconnecting device includes a first drive unit 302A of the first contactor 302 connected in series to the landing-side switch 308, and a disconnecting switch 306 that supplies or stops power to the landing-side switch 308. Prepare.

  When power is supplied to the first drive unit 302A, the first switch unit 302B is connected. When the disconnect switch 306 is disconnected, the energization to the landing side circuit including the landing side switch 308 is cut off.

  Further, the landing-side main power supply disconnecting device is connected to the fire fighting operation switch 310 connected when the fire fighting operation condition is satisfied, the timer 309 connected in series to the fire fighting operation switch 310, and the second connected in parallel to the timer 309. A second drive unit 303A of the contactor 303.

  The timer 309 disconnects the disconnect switch 306 when a predetermined time elapses. When power is supplied to the second drive unit 303A, the second switch unit 303B is connected.

  Here, the operation of the landing-side main power supply disconnecting device will be described. It is the first switch unit 302B and the landing side switch 308 that are installed on the landing side that must be cut off during the firefighting operation. This is because if the fire water is applied to the circuit installed on the landing side, the equipment will be damaged.

  First, when a fire fighting operation condition is satisfied, the fire fighting operation switch 310 is connected by the control unit 107.

  When the fire fighting operation switch 310 is connected, the timer 309 starts measuring time, and the power is supplied to the second drive unit 303A so that the second switch unit 303B stored in the control unit 107 is connected.

  The timer 309 disconnects the disconnect switch 306 after elapse of a predetermined time, for example, several seconds.

  When the disconnect switch 306 is disconnected, the supply of power to the first drive unit 302A is stopped. When the supply of power to the first drive unit 302A is stopped, the first switch unit 302B is disconnected.

  Therefore, the landing-side main power supply disconnecting device can disconnect the first switch unit 302B and the landing-side switch 308 installed on the landing side when the firefighting operation condition is satisfied.

  FIG. 4 is a timing chart showing the operation of the timer 309. As shown in FIG. 4, it is assumed that the fire-fighting operation condition is satisfied at the timing t0 of the graph 401.

  At timing t0, power is supplied to the second drive unit 303A of the second contactor 303 shown in the graph 402 and the timer 309 shown in the graph 404. On the other hand, the power from the power source shown in the graph 403 is continuously supplied regardless of the firefighting operation conditions.

  The timer 309 starts measuring time from timing t0, and disconnects the disconnect switch 306 at timing t1 after the lapse of time Δt.

  Therefore, malfunction can be avoided.

  As described above, the elevator 100 according to the present embodiment is higher than the hoisting machine 102, the hoisting machine waterproof cover 102A that covers the hoisting machine 102 in a waterproof manner, and the landing door on the uppermost floor inside the hoistway 110. The control unit 107 that controls the operation of the elevator, the control unit waterproof cover 107A that covers the control unit 107, and the landing side main unit that cuts off the power to the landing side device when the firefighting operation condition is satisfied A power disconnecting device.

  Therefore, according to the present embodiment, there is an effect that water for fire extinguishing activity at the time of a fire is not easily applied to the control unit, and can be operated as an emergency elevator even at the time of a fire.

  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 102A: hoisting machine waterproof cover 104: landing side door 105: step unit 107: control unit 107A: control unit waterproofing cover

Claims (6)

  An elevator control device that is installed above the landing door on the uppermost floor inside the elevator hoistway and is covered with a control unit waterproof cover so as to be waterproof so as to control the operation of the elevator. When firefighting driving conditions are met,
After energizing the circuit on the landing side after a predetermined time,
The elevator control device according to claim 1, further comprising a landing-side main power supply disconnecting device that continues energization of the motor of the hoisting machine. 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,
An elevator control device that is installed above the landing door on the top floor inside the hoistway and controls the operation of the elevator,
A control unit waterproof cover for covering the elevator control device in a waterproof manner;
Elevator equipped with. When firefighting driving conditions are met,
After energizing the circuit on the landing side after a predetermined time,
The elevator according to claim 3, further comprising a landing-side main power supply disconnecting device that continues energization of the motor of the hoisting machine.   A method of waterproofing an elevator, wherein an elevator control device, which is covered with a control unit waterproof cover so as to be waterproof, is installed above the landing door on the uppermost floor inside the elevator hoistway. When firefighting driving conditions are met,
After energizing the circuit on the landing side after a predetermined time,
The elevator waterproofing method according to claim 5, wherein energization of the motor of the hoisting machine is continued.

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