JPH0578056A - Elevator - Google Patents

Abstract

PURPOSE:To prevent a guide rail from being curved, and thereby prevent a balance weight and a cage from being derailed as the guide rail is curved by lessening the influence of exciting force due to the vibration of the cage and the balance weight when earthquakes take place and so on. CONSTITUTION:Each bracket 9 which is fitted onto a balance weight 5 and a guide rail 7 for a cage, is provided at each position roughly opposite to each guide shoe 6 which is provided for the balance weight 5 and the cage, in a state that the cage is stopped at a reference story.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator for preventing railing of a car and a counterweight associated with arm bending of a guide rail during an earthquake.

[0002]

2. Description of the Related Art A conventional rope type elevator has a hoisting machine 4 in which a rope 2 is placed in a machine room as shown in FIGS.
Wrap it around the diversion sheave and hang it down the hoistway 3,
An elevator car 1 is attached to one end and a counterweight 5 is attached to the other end, and is guided by a guide rail 7 laid in the hoistway 3.

As shown in FIG. 2, the counterweight 5 is provided with guide shoes 6 at four positions on the upper, lower, left and right sides, and is engaged with a guide rail 7 so as to be vertically movable. The guide rail 7 is fixed to the hoistway 3 by a bracket 8. The bracket 8 is attached regardless of the vertical mounting pitch of the guide shoe.

[0004]

Generally, an elevator is
Nearly 80% of all cars are on the standard floor (parking floor) during nights and holidays. However, the mounting pitch of the brackets that fix the guide rails is simply because the entire height of the hoistway is mounted at a substantially constant pitch.
The relationship with the position of the counterweight or the guide shoe of the car has not always taken into account the synchronous mounting pitch. Therefore, for example, when an elevator car is stopped at the standard floor and an earthquake occurs, the counterweight and car exert an acting force on the guide rails via the guide shoes due to the vibration force of the rolling. . Since this action works through the guide shoe to the middle portion of the guide rail without the bracket, the bending moment received by the guide rail increases as shown in Fig. 2, and the amount of deflection of the guide rail increases correspondingly, and the counterweight and riding weight are increased. There was a high possibility that the car could be derailed, which was dangerous.

Therefore, an object of the present invention is to reduce the influence of the acting force exerted on the guide rail by the counterweight or the car when an earthquake occurs at the time of stopping the standard floor of the elevator or the like, and suppress the occurrence of the deflection of the guide rail. However, it is to prevent the balance weight and the derailment of the car.

[0006]

In order to achieve the above object, the present invention provides a hoist mounted in a machine room, and a rope wound around the hoist and hung in a hoistway. A balance weight is attached to one end of the rope, a car is attached to the other end, and a guide body provided on the balance weight and the car is
In an elevator guided by a guide rail laid in a hoistway via a bracket, the bracket of the guide rail at a position substantially opposite to the counterweight of the elevator or the guide body of the car at a stop on the reference floor of the elevator. (EN) Provided is an elevator having a structure for mounting.

[0007]

[Operation] With the above configuration, when the elevator car stops at the position of the counterweight or the bracket attached to the guide rail for the car, the counterweight or the guide for the car (guide shoe or guide) Since it is placed so that it faces the same level as the roller), even if the counterweight or the car vibrates during an earthquake, even if the guide rail has a zero bending moment or a slight misalignment, it acts slightly. Therefore, rail removal can be prevented.

[0008]

An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, two rails 7 are attached to a bracket 9 which is attached to the hoistway 3 with a space therebetween so as to face each other with a rail clip or the like.

On the other hand, the counterweight 5 is suspended by suspending a rope 2 wound around a hoist mounted in a machine room on a hoistway 3. Guide shoes 6 are fixedly installed on the upper, lower, left and right sides of the counterweight 5, and the guide rails 7 are provided through the guide shoes 6.
It is provided so as to be movable up and down by engaging with.

When the counterweight 5 is stopped at the reference floor, the guide shoes 6 and the brackets 9 of the guide rails 7 are arranged at substantially the same position facing each other. In the above embodiment, the counterweight 5 has been described, but it is also considered that the guide shoe of the car and the rail bracket are arranged at substantially the same position facing each other even when the standard floor of the car is stopped.

According to the above construction, when the counterweight 5 is laterally oscillated by an earthquake and the acting force F is generated, even if the counterweight 5 acts on the guide rail 7 via the guide shoe 6, it is Bracket 9 fixed oppositely
Since it acts as a pure load directly on, no force is generated without generating a bending moment. Therefore, the bending moment of the guide rail 7 is hardly generated and is not affected. Further, the same effect can be obtained with the car guide rails.

In this embodiment, the bracket 9 is provided so as to face the upper and lower guide shoes 6, but the guide shoe 6
Bracket 9 only on one of the guide shoes 6
Even if the two are opposed to each other and the other is slightly displaced, the same effect can be obtained as long as it is within the mechanically allowable range. In other words, even if the bracket 9 is not at the same level position as the guide shoe 6, a slight deviation can be set within an allowable range because of the relationship with the safety ratio of rail-rail danger.

Further, not only considering the balance of the elevator when the standard floor is stopped and the position of the car, but also considering the stop of the nearest floor of the elevator in an emergency, the balance when the elevators are stopped at each floor. The same effect can be obtained by setting the position of the bracket in consideration of the positions of the weight and the car.

[0014]

As described above, according to the present invention, the guide shoe and the guide rail bracket are provided so as to face each other even if an earthquake occurs while the vehicle is stopped at the reference floor and a large lateral vibration force is applied. Therefore, it is possible to prevent a bending moment from being generated in the guide rail, causing a deflection, and thus preventing the counterweight or the car from derailing from the guide rail or curving the guide rail. Further, the present invention is suitable as an earthquake countermeasure for an elevator regardless of whether it is new or existing.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of an elevator counterweight according to the present invention.

FIG. 2 is a front view showing a configuration of a conventional counterweight of an elevator.

FIG. 3 is a schematic side view of a conventional elevator.

[Explanation of symbols]

 1 ... Car basket 2 ... Main rope 3 ... Hoistway 4 ... Hoisting machine 5 ... Counterweight 6 ... Guide shoe 7 ... Guide rail 9 ... Bracket

Claims (1)

[Claims] 1. A hoist mounted in a machine room, a rope wound around the hoist and hung in a hoistway, a counterweight attached to one end of the rope, and a car attached to the other end of the rope. , And the guide provided on the balancing weight and the car,
In an elevator guided by a guide rail laid through a bracket in a hoistway, the bracket of the guide rail at a position substantially opposite to the counterweight of the elevator or the guide body of the car at a stop on a reference floor of the elevator. An elevator characterized by having a structure for mounting.