JPH08310742A - Control device for elevator - Google Patents

Abstract

PURPOSE: To dispense with the countermeasures against the sliding noises at the time of a high-speed travel and the abrasion of current collectors and feed power to an elevator when a car is stopped at an optional position by bringing the current collectors into contact with trolley lines each time the car is stopped, and bringing the current collectors into no contact with the trolley lines during the travel of the elevator. CONSTITUTION: When an elevator car starts moving, a contact point 14 is closed, coils 9A, 9B are excited, power is fed from a battery 15, a moving iron core 10A is attracted to a fixed iron core 17, and current collectors 7A, 7B are retreated to positions 7A', 7B'. A load 16 such as illumination is excited from the battery 15. When the elevator car is stopped, the contact point 14 is opened, the coils 9A, 9B are de-magnetized, the moving iron core 10A and the current collectors 7A', 7B' are advanced by a release spring 11A and stopped at positions 7A, 7B in contact with the trolley lines 6A, 6B. The battery 15 is charged by the excitation from the trolley lines 6A, 6B. The current collectors 7A', 7B' are separated from the trolley lines 6A, 6B during a travel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for an elevator car.

[0002]

2. Description of the Related Art Generally, a cable is used for power supply and signal transmission to an elevator car, but in a slanting elevator or the like, a tail cord cannot be laid because the hoistway is slanted, and therefore, JP-A-60 As described in Japanese Patent Publication No. 102377, power is supplied by a trolley wire and a current collector, and in an elevator for a tower, the cable may be swayed by wind, get entangled in equipment in the hoistway, and be cut off. Therefore, Japanese Patent Laid-Open No. 1-209287 discloses a power supply device that supplies power each time the cable is stopped and the vehicle is stopped instead.

[0003]

In the prior art contact feeding system for trolley wire and current collector, there are problems such as contact sliding noise, trolley wire, current collector wear and abrasion powder treatment. Further, in the method of supplying power every time the vehicle stops at the stop floor, if the vehicle is stopped at a position other than the stop floor for a long time, the battery is erased and it becomes difficult to control the elevator. The present invention solves these problems.

[0004]

In order to achieve the above object, the present invention provides a power supply device comprising a trolley wire, a current collector, a solenoid device for moving the current collector, and a battery.

[0005]

The present invention is a system in which the solenoid is excited by the battery power source to retreat the current collector to disconnect the contact with the trolley wire while the elevator is traveling, and when the car stops, the current collector and the trolley wire come into contact with each other to supply power. Therefore, the electric power in the car during traveling is supplied by the battery, but the electric power consumption during traveling is not a problem because it is about lighting, there is no sliding noise between the trolley wire and the current collector, there is no contact wear, and it can be placed at any position. Power can be supplied even when stopped. As an alternative, the capacity of the battery can be reduced by retracting the current collector in the non-excited state of the solenoid and energizing and advancing the solenoid in the stopped state of the car, and the effect is the same as that described above.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view of an elevator hoistway, second
Is a block diagram of a power feeding method, and FIG. 3 is a cross-sectional view of a current collector. The car 2 in the hoistway 1 is connected to the hoist 4 via the rope 3.
To go up and down. The hoisting machine 4 is controlled by the control panel 5, and the power inside the car 2 such as lighting and door motor is supplied from the control panel 5 via the trolley wires 6A, 6B to the collectors 7A, 7B provided in the car 2. The built-in current collectors 8A and 8B and the current collectors 8A and 8B include coils 9A and 9B, a movable iron core 10A, a release spring 11A, a current collector 7A and a movable iron core 10.
Shaft 12A directly connecting A, lead wire 13A of current collector 7A,
The stationary core 17 and the like are provided, the contacts 14 are closed when the elevator is running, and the battery 15 is a load 16 such as lighting (not shown) in the car 2 when the elevator is running and the coils 9A of the current collectors 8A and 8B. Used for 9B power supply.

With respect to the operation of the above configuration, when a call or the like is generated in the elevator car 2 and the movement is started, the contact 14 is closed,
The coils 9A and 9B are energized and excited, and then the battery 15
The movable iron core 10A is attracted to the fixed iron core 17 and the current collectors 7A and 7B are retracted to the positions 7A 'and 7B'. At this time, the load 16 such as the lighting in the car 2 is powered by the battery 15, the car 2 runs, arrives at the destination floor, or stops at an intermediate floor due to an emergency stop (power failure, equipment malfunction, etc.) maintenance inspection, etc. 14 opens, the coil 9A,
The demagnetization of 9B causes the release spring 11A to move the movable iron core 10A and the current collectors 7A 'and 7B' forwards 7A and 7B.
It stops at the position and contacts the contact wires 6A and 6B. Therefore, power is supplied from the trolley wires 6A and 6B to open / close a door motor (not shown), supply power to other loads, and further charge the battery 15. Therefore, when the car 2 is running with low power consumption, power is supplied from the battery 15, and when the power consumption is high when the car 2 is stopped, the trolley wires 6A and 6B are used so that the conductor resistance is smaller than that of the cable, and the resistance loss is small and the power transmission efficiency is high. .

With the above configuration and operation, the traveling trolley wires 6A, 6B and the current collectors 7A ', 7B' are separated from each other, so that there is no sliding noise, no wear, and stop at any position. Can also be fed.

In the embodiment, two trolley wires and two current collectors have been described, but the same effect can be obtained by using one trolley wire and one current collector and grounding the negative electrode side. As another alternative of the current collector, as shown in FIG. 4, the current collector 7C of the current collector 8C is collected.
When the coil 9C is de-energized, the movable iron core 10C has a spring 11
C is pressed to the side opposite to the collector 7C,
The state becomes C '. Therefore, the contact 14 of FIG.
If the contact is opened during traveling and closed when stopped, power supply to the coil 9C is not required during traveling of the elevator, the capacity of the battery 14 becomes small, and the cost and weight are reduced. Can also be obtained.

Further, in the explanation of the operation, the trolley wire and the current collector are in contact with each other when the car of the elevator is stopped. However, considering the contamination or oxidation of the surface of the trolley or the current collector, a certain degree of sliding contact has a contact reliability. Since it is good, the effect can be obtained even with a control circuit that comes into contact with the car 2 from a certain distance before the stop.

[0011]

According to the present invention, since the current collector of the current collector is not brought into contact with the power supply trolley wire while the elevator is traveling, it is not necessary to deal with sliding noise during high-speed traveling and abrasion of the current collector. Can be powered even when stopped at any position.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an elevator hoistway.

FIG. 2 is a block diagram of a power feeding method.

FIG. 3 is a cross-sectional view of a current collector.

FIG. 4 is a sectional view of a current collector according to a second embodiment.

[Explanation of symbols]

6A, 6B ... trolley wire, 7A, 7B ... current collector, 8A, 8
B ... Current collector, 9A, 9B ... Coil, 14 ... Contact, 15
…Battery.

Claims (5)

[Claims] 1. A power supply device comprising a plurality of trolley wires laid in a hoistway of an elevator and current collectors provided on a car, the current collectors slidingly contacting the respective trolley wires each time the car is stopped. An elevator control device having a structure in which a trolley wire and a current collector are brought into contact with each other. 2. The elevator control device for operating the current collector back and forth by means for contacting the trolley wire and the current collector according to claim 1 by means of a device composed of a solenoid, a spring and a shaft. 3. The elevator control device according to claim 2, wherein the solenoid is excited by a battery while the elevator is traveling, and the current collector is retracted and is in a non-contact state. 4. The elevator control device according to claim 2, wherein the current collector advances by the force of a spring when the elevator is stopped, and contacts the trolley wire. 5. The elevator control device according to claim 2, wherein the contact between the trolley wire and the current collector is in sliding contact from within a certain distance before stop.