WO2003033389A1

WO2003033389A1 - Elevator

Info

Publication number: WO2003033389A1
Application number: PCT/JP2001/008994
Authority: WO
Inventors: Masami Yoshikawa
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2001-10-12
Filing date: 2001-10-12
Publication date: 2003-04-24
Also published as: KR20030059308A; EP1464606B1; JPWO2003033389A1; KR100492855B1; CN1444538A; EP1464606A1; CN1215963C; EP1464606A4

Abstract

An elevator comprising a hoist (5) installed in the top of an elevator shaft, a wire rope passed through the traction sheave of the hoist (5) and provided, at one end thereof, with an elevator cage (1) and, at the other end thereof, with a balance weight (2), a compensation chain (3) fixed, at the both ends thereof, to the lower part of the elevator cage (1) and the lower part of the balance weight (2) respectively, a rescue weight (4) fixed to the compensation chain (3) in case of emergency in order to move the elevator cage (1) by adjusting the balance between the cage (1) and the balance weight (2), and means (7) for detecting the rescue weight (4) fixed to the compensation chain (3).

Description

Specification

Elevator overnight device

Technical field

The present invention relates to an elevator apparatus, and more particularly to a method for safely recovering from an emergency to a normal operation in a machine room-less elevator.

Landscape technology

As an example of the elevator apparatus, there is one disclosed in Japanese Patent Application Laid-Open No. 2000-351548 and Japanese Patent Application Laid-Open No. 2000-169055, which is shown in FIG. FIG. 3 is a cross-sectional view showing a configuration of a conventional elevator apparatus. In FIG. 3, reference numeral 1 denotes a basket for the evening. 2 is counterweight (C WT). 3 is a competition. 4 is a rescue mori. Reference numeral 5 denotes a hoisting machine, which is provided at the top of the hoistway. 6 is a brake release device.

The above-mentioned elevator car 1 and CWT 2 are provided at both ends of a wire rope wound around a hoisting machine 5, respectively. In addition,

3 has both ends at the lower part of the car 1 and the lower part of the CWT 2, respectively. Furthermore, the rescue memory 4 is attached to the companion 3 at the time of emergency rescue, etc., and adjusts the balance between the car 1 and the CWT 2. The brake of the hoisting machine 5 is released by the brake releasing device 6 provided in the hoisting machine 5. The brake release device 6 of the hoisting machine 5 is remotely controlled at the landing on the top floor or the like.

Next, the emergency operation of the conventional elevator system shown in Fig. 3 will be described. I do.

For example, if elevator 1 stops in the middle of the floor due to a power outage, etc., in order to rescue passengers in such an emergency, use car brake release device 6 to place car 1 on the nearest floor. It is common to rescue passengers. The brake release device 6 manually releases the brake of the hoisting machine 5 and moves the car 1 upward or downward by imbalance between the car 1 and the CWT 2. However, if car 1 and CWT 2 are balanced (for example, half of the occupants are in car 1), car 1 cannot be moved at this time even if the brakes are released. Attach the rescue memory 4 to the compensating chain 3 provided at the bottom of 1 and adjust the balance between car 1 and CWT 2 to create an imbalance, and move car 1

As described above, the conventional elevator system had a problem in that when returning to normal operation after rescuing a passenger, the rescue memory was forcibly removed and the equipment was damaged by the fall of the rescue memory. Disclosure of the invention

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to obtain an elevator apparatus that controls not to return to normal operation without forgetting to remove a rescue memory. Things.

In order to achieve this object, an elevator apparatus according to the present invention comprises a hoist provided at the top of a hoistway and a traction machine of a hoist, and an elevator at one end. Evening baskets and wires with counterweights at multiple ends — ropes, compensating chains with each end attached to the lower part of the elevator basket and lowering of the counterweights, Adjust the balance with the balance and move the basket It is equipped with a rescue weight to be moved and a detecting means for detecting that the rescue weight is attached to the compensating chain.

Further, in the elevator apparatus according to the present invention, when the detecting means detects that the rescue weight is attached to the compensating chain, the operation of the elevator apparatus stops.

Further, in the elevator apparatus according to the present invention, the detecting means is an optical switch, and when the rescue memory blocks the light beam between the light emitting portion and the light receiving portion of the optical switch, the rescue memory is attached to the compensating chain. Is determined to have been carried out.

Further, in the elevator apparatus according to the present invention, the detecting means is provided below the elevator car or below the balancing weight, and when the load of the rescue weight is detected, the operation of the elevator car is performed. It will stop. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a cross-sectional view illustrating a configuration of an elevator apparatus according to a first embodiment of the present invention.

FIG. 2 is an enlarged view showing the configuration of the lower part of the elevator car in the elevator apparatus of Embodiment 2 of the present invention.

FIG. 3 is a cross-sectional view showing a configuration of a conventional elevator apparatus. BEST MODE FOR CARRYING OUT THE INVENTION

Next, examples of the present invention will be described as follows.

Example 1

One embodiment of the elevator apparatus according to the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view illustrating a configuration of an elevator apparatus according to a first embodiment of the present invention. In FIG. 1, reference numeral 7 denotes an optical switch serving as a detecting means, which is provided on the bottom surface of the hoistway, and determines whether or not something has passed depending on whether or not the light beam between the opposing light emitting unit and light receiving unit is blocked. Detect whether or not. If the rescue memory 4 is attached to the compensator 3 and the operation is returned to the normal operation, the rescue memory 4 attached to the compensating chain 3 cuts off the light beam of the optical switch 7 and the rescue memory 4 Failure to remove is detected, and elevator 1 stops moving, and cannot return to normal operation.

Note that, in FIG. 1, the same or corresponding portions as those in the conventional example shown in FIG. 3 are denoted by the same reference numerals, and the description thereof is omitted, and portions different from FIG. 3 are described.

As described above, the optical switch 7 is provided on the bottom surface of the hoistway, and the rescue memory 4 is attached to the compensator 3 depending on whether or not the light beam between the light emitting portion and the light receiving portion of the optical switch 7 is blocked. In order to detect whether or not the rescue memory can be restored to normal operation, the rescue memory can be dropped without dropping the rescue memory 4 without returning to normal operation without forgetting to remove the rescue memory 4. Can be prevented from being damaged.

Also, if you forget to remove the rescue memory 4 and return the elevator to normal operation, unbalance between the car 1 and the CWT 2 due to the rescue memory 4 will occur. Problems such as slipping due to insufficient frictional force with the machine sheave can be prevented.

Example 2.

Another embodiment of the elevator apparatus according to the present invention will be described with reference to FIG. FIG. 2 is an enlarged view showing the configuration of the lower part of the elevator car in the elevator apparatus of Embodiment 2 of the present invention. In FIG. 2, reference numeral 9 denotes a beam to which one end of the compensating chain 3 is connected. One end of the beam 9 is rotatably provided with the pin 8 below the car as a fulcrum. 10 is a spring, and the other end of the beam 9 supports the weight of the compensation 3 on the beam 9. Reference numeral 1 denotes a switch, and when the beam 9 is pulled down as an operation lever, the normal operation of the elevator apparatus is controlled. When the panel 10 is compressed by the weight of the compensating chain 3 and the rescue memory 4 attached thereto, the operating lever is pulled down.

In this way, when the operation lever is pulled down and the switch 11 is turned on, it is determined that the rescue memory 4 is attached to the compensation 3 and the elevator due to forgetting to remove the rescue memory 4 has been stopped. Is prevented from returning to normal operation.

In the above description, the integrated structure is provided below the elevator car 1, but the structure may be provided below the CWT 2. As described above, the elevator apparatus according to the present invention is wound around a hoist provided at the top of a hoistway and a traction machine of a hoist, and an elevator car is provided at one end. A wire rope with a balancing weight at each end, a compensating chain with each end attached to the lower part of the elevator basket and the lower part of the balancing weight, The rescue memory that moves the elevator car and the detecting means that detects that the rescue memory is attached to the compensating chain are provided. It is possible to prevent the rescue weight from falling and damaging the equipment etc. from forgetting to remove the weight. Industrial applicability

As described above, the elevator apparatus of the present invention is used for providing a safe recovery method from an emergency to a normal time, particularly in a machine room-less elevator.

Claims

The scope of the claims

1. A hoisting machine provided at the top of the hoistway,

A wire rope wound around a traction strap of the hoisting machine, an elevator car at one end, and a balancing weight at multiple ends;

A compensating chain, each end of which is attached to the lower part of the elevator and the lower part of the counterweight;

It is provided in the compensating chain in an emergency, adjusts the balance between the car and the balancing weight, and detects whether the rescue weight is attached to the compensating chain and a rescue weight that moves the elevator car. An elevator apparatus comprising a detecting means.

2. When the detecting means detects that the rescue weight is attached to the compensating chain, the operation of the elevator is stopped.

2. The elevator apparatus according to claim 1, wherein:

3. The detection means is an optical switch, and when the rescue memory blocks the light beam between the light emitting portion and the light receiving portion of the optical switch, it is determined that the rescue memory is attached to the compensating chain.

3. The elevator apparatus according to claim 2, wherein:

4. The detection means is provided below the elevator car or below the balancing weight. When the load of the rescue weight is detected, the operation of the elevator car stops.

2. The elevator apparatus according to claim 1, wherein: