JPH08324913A - Elevator equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To rescue passengers from normal doors even if the brake on the counterweight breaks down. [Structure] A rope 3 for hanging a car 2 is connected at one end thereof to a rope effective length expansion / contraction device 4. Even if the balance weight 6 cannot be moved due to a failure of the brake 8, the car 2 is moved to the proper floor door position by unwinding or winding the rope from the rope effective length expansion / contraction device 4. [Effect] Passengers can be quickly rescued from normal doors.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator system, and more particularly to an elevator system having a rescue device for a brake failure of an elevator having a brake on a counterweight.

[0002]

2. Description of the Related Art In an elevator device such as an elevator using a linear motor, in which a brake is attached to a counterweight, if the brake fails and cannot be opened, go to the position of the counterweight and release the brake. Without it, the car cannot move. For this reason, if the car breaks in the middle of the floor and the brake fails, the passengers in the car will be confined for a long time until the rescuer reaches the counterweight position and releases the brake. Also, when rescued,
The only way to inconvenience passengers is to rescue them from the ceiling door at the top of the car.

In Japanese Patent Laid-Open No. 6-219668, a balance weight is provided with a brake. A plurality of brakes are provided in order to soften the shock at the time of emergency braking, and the plurality of brakes are selectively selected according to the car load. There are some that are designed to work.

[0004]

In the above prior art, since there is no means for moving the car when the brake cannot be opened due to a breakdown or the like, there is no way to move the car from the ceiling door of the car to the hoistway, or from the hoistway to the hatch door. It will be rescued, which will cause great inconvenience to passengers.

The object of the present invention is to remedy such a problem, and even if the brake provided on the counterweight cannot be released and the counterweight cannot move from the stop position, the car can be moved. It is an object of the present invention to provide an elevator device configured as described above.

[0006]

A feature of the present invention is that a balance and a balance weight are suspended from each other by means of a rope, and driving means for vertically moving the balance weight and the balance, and the balance weight. In the elevator device equipped with a brake mounted on the vehicle, an expansion / contraction means for expanding / contracting the effective length of the rope by operation from the ground or the building side is provided.

[0007]

[Operation] When the brake provided on the counterweight cannot be released due to a failure or the like, the rope extending / contracting means extends or retracts the rope into the hoistway or retracts the rope from the hoistway to extend or retract the rope effective length. The car can be moved and moved to the proper landing position to rescue passengers from the normal landing.

[0008] In the middle of the rope, for example, the rope between the pulleys fixed to the upper portion is pushed and pulled by the pulling and pushing means to expand and contract the effective length of the rope, and the car fixed to the rope is moved to a predetermined position of the landing. Can be moved to and rescue passengers from the normal landing.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of an embodiment of the present invention. An example of a linear motor will be described below.
Not limited to linear motors, it can be applied to all elevators equipped with a brake on the counterweight. The car 2 installed in the hoistway 1 is suspended on the rope 3 by a car pulley 21. The rope 3 has one end connected to the rope effective length expansion / contraction device 4 and the other end connected to the hoistway ceiling 11
It is fixed to a part of the ceiling portion 11 by passing through the counterweight moving pulley 61 via the hanging pulleys 51 and 52 provided in the. The suspension pulley 61 is connected to the counterweight 6. The counterweight 6 is provided with a driving linear motor 7 and a braking brake 8. Car 2
When the driving linear motor 7 operates and the balance weight 6 moves, the rope 3 is pulled or unwound to move the car pulley 21 and the car moves to a predetermined position. The linear motor 7 is stopped, the brake 8 for braking works, and services for hall calls and car calls.

When the braking brake 8 fails and the counterweight 6 cannot move, the rope effective length extension / contraction device 4 extends / contracts the rope effective length. This allows
Even when the driving linear motor 7 cannot move, the car can be moved by stopping or extending the rope 3 to shorten it to the nearest floor, so the brake breaks and the counterweight 6 moves. Passengers can be rescued from normal doors when lost.

FIG. 2 shows an example in which the rope effective length extension / contraction device 4 is provided on the ground. The rope 3 is guided to the rope effective length expansion / contraction device 4 installed on the ground by using pulleys 53 and 54 so that the rope 3 can be operated on the ground. The other reference numerals are the same as those in FIG. 1 and their explanations are omitted (the same applies hereinafter).

According to this embodiment, since it is not necessary to provide it on the ceiling portion, the ceiling portion can be lowered, and since it can be operated on the ground, it is easy to operate and can be quickly rescued.

FIG. 3A shows an example in which a moving pulley is attached only to the counterweight 6. Since the rope end on the car side is fixed to the car 2, the rope effective length expansion / contraction device 4 is attached to the rope end on the counterweight 6 side. According to the present embodiment, the force is required to be doubled, but the length for expanding and contracting the rope 3 may be the traveling distance of the car, and may be half of that in FIGS. 1 and 2.

FIG. 3B shows a moving pulley 21 only for the car.
It is an example in which is attached. The present invention can be implemented with such a configuration.

If a moving pulley is attached to the car as in the embodiment shown in FIGS. 1, 2 and 3 (b), the length for extending and retracting the rope 3 is twice the moving distance of the car, but the force is increased. Can be half the car weight.

FIG. 4 shows an example of the rope effective length expansion / contraction device 4. The rope effective length extension / contraction device 4 is used for the rope 3 in the hoistway 1.
It is only necessary to change the length of the rope. Therefore, as shown in FIG. 4A, the rope may be wound around the drum 41 and the motor or the handle 42 may be manually turned to change the length of the rope.
In particular, when it is manually rotated, a reduction gear is provided so that it can be rotated manually. If a planetary gear reducer or the like is used as the reduction gear, it can be made compact. in this case,
A rotation stopper for the drum 41 is required separately.

FIG. 4B shows a lever or jack 43.
Is an example in which the rope 3 is lifted by and the rope 3 in the hoistway 1 is extended. According to the present embodiment, since the rope end is fixed, a detent is not necessary. In addition, since it is operated only during rescue operation, it can be applied to existing elevators. It is also possible to remove it normally and install it for rescue use.

FIG. 4C shows a mechanism 44 for folding the rope.
Is a method of using.

FIG. 5 shows an embodiment in which the car is moved by hooking a rope from the ground, hoistway wall or ceiling without using a moving pulley. It is possible to move the car 2 by providing a pulling pulley 91 or something corresponding to a hook between the hanging pulleys 51 and 52 and pulling the rope 3 by the pulling device 9. The towing device 9 may be a hydraulic jack or a device as shown in FIG. Further, in the present embodiment, the case of pulling is described, but the car may be moved by pushing down the hydraulic jack or the like. According to the present embodiment, it can be applied even in the case of one-to-one roping.

FIG. 6 shows an example in which the operating portion 93 of the towing device shown in FIG. 5 is provided on the ground. The towing pulley 91 is attached to the towing pulley moving guide 92, and the towing pulley 91 is moved along the towing pulley moving guide 92 by a rope, a chain 94, or the like by the operation unit 93 provided on the ground, thereby the car basket. To move. According to the present embodiment, even in the case of the one-to-one roping, the operation can be performed on the ground, so that the rescue can be promptly performed.

[0022]

According to the present invention, even if the brake provided on the counterweight fails, the car can be moved, so that the passenger can be promptly rescued from the normal door.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an elevator apparatus according to an embodiment of the present invention.

FIG. 2 is an overall configuration diagram of an elevator device according to another embodiment of the present invention in which a rope expansion / contraction device is mounted on the ground.

FIG. 3 is an overall configuration diagram of an elevator apparatus according to another embodiment of the present invention having one moving pulley.

FIG. 4 is a configuration diagram showing three examples of rope effective length expanding / contracting means according to the present invention.

FIG. 5 is an overall configuration diagram of an elevator apparatus according to another embodiment of the present invention that does not use a moving pulley.

FIG. 6 is an overall configuration diagram of an elevator apparatus according to another embodiment of the present invention in which an operating means of a towing device is provided on the ground and a moving pulley is not used.

[Explanation of symbols]

2 ... Car, 3 ... Rope, 4 ... Rope effective length expansion / contraction device, 6 ... Counterweight, 7 ... Linear motor for driving, 8 ...
Brake for braking.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideki Nihei, Inventor Hideki Nihei 7-1 Omika-cho, Hitachi City, Ibaraki Hitachi Ltd. Hitachi Research Laboratory (72) Inventor Noboru Arahori 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo House number Hitachi Co., Ltd.

Claims (6)

[Claims] 1. An elevator system comprising a car and a counterweight suspended in a rope shape via a rope, a driving means for vertically moving the car and the counterweight, and a brake mounted on the counterweight. Alternatively, an elevator device provided with a stretching means for stretching the effective length of the rope by an operation from the building side. 2. An elevator apparatus comprising a carriage and a counterweight suspended in a slip-like shape via a rope, a drive means for vertically moving the car and the counterweight, and a brake mounted on the counterweight. A movable pulley that is provided on at least one of a car and a counterweight and connects at least one of the car and the counterweight to the rope, and one end of the rope is fixed to the building side so as to extend and contract the effective length of the rope. Elevator device equipped with expansion and contraction means. 3. The elevator apparatus according to claim 1 or 2, wherein the expanding and contracting means is means fixed to the building side and winding up one end of the rope. 4. The expansion / contraction means is means for pulling or pushing out the rope with a jack or a lever.
Or the elevator device according to 2. 5. The elevator apparatus according to claim 1, wherein the expansion / contraction means is means for folding the rope. 6. An elevator apparatus comprising a car and a counterweight suspended in a rope shape via a rope, a drive means for driving the car and the counterweight up and down, and a brake mounted on the counterweight. An elevator apparatus comprising means for pulling or pushing this rope by hooking a part of the rope, and moving the car by operating the pushing and pulling means.