JP2766946B2 - Elevator equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car and a counterweight suspended from a plurality of ropes for main ropes wound by a hoisting machine installed in a machine room, and a car having one end thereof. lower, the elevator equipment that includes a rope for weight compensation of the plurality of the other end of which is connected to the weight lower balance engagement
More particularly, the present invention relates to a long-stroke and high-speed elevator rope vibration preventing apparatus for an elevator apparatus.

[0002]

2. Description of the Related Art Buildings are becoming more and more high-rise due to the recent rise in land prices and intelligent buildings. Along with this, there is a rapidly increasing need to increase the length and speed of elevator devices installed in buildings to increase the efficiency of transporting passengers and luggage. But,
When a building is made high-rise, it becomes a flexible structure due to its seismic design. In addition, the lateral movement of the building induces the lateral movement of the elevator equipment, especially the elevator ropes, ie, the ropes for the main ropes and the ropes for weight compensation, provided therein. Such lateral run-out lasts for a long time once the lateral run-out occurs because the internal attenuation of the rope is small. If the car and the counterweight run at high speed in this sideways state, there is a danger that the rope will deviate from the groove of the hoisting machine, etc. give. Such danger and anxiety increase as the elevator speed increases and decreases.

Conventionally, as a technique devised to prevent such a lateral deflection of a rope, Japanese Utility Model Laid-Open No. 50-5385 has been proposed.
No. 4 publication has been proposed. In this device, an arm rotatably supported by a hoistway wall is tilted and held on an elevator rope by using a lever mechanism to suppress vibration. However, in this method, the arm is pressed against the elevator rope to mechanically stop the vibration of the rope, but the holding force of the arm cannot be sufficiently large due to its mechanism, and the vibration energy absorbing mechanism is used. Therefore, it is impossible to control the elevator rope by overcoming an increase in the weight and vibration energy of the elevator rope when the elevator apparatus has a long stroke and a high speed.

[0004]

A problem to be solved by the present invention is that a lateral shake of a high-rise building caused by an earthquake or a strong wind is transmitted to an elevator device, vibrates an elevator rope, and a car passes through the rope. Begins to roll sideways, giving passengers anxiety. Therefore, an object of the present invention is to provide an elevator rope vibration preventing device capable of suppressing occurrence of abnormal lateral swing of a car of an elevator device.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a car which is suspended by a plurality of main ropes wound by a hoisting machine installed in a machine room, and which is lifted and lowered. and counterweight, car and counterweight respectively Oite the elevator equipment that includes a rope for weight compensation of the plurality of connecting the bottom of the weight, is Mototan the wall of the entrance side of the hoistway of the elevator installation Attached telescopic package
Equipped with a Ntagurafu type link mechanism, this path Ntagurafu type Li
The link mechanism has a rope guide at the front end that contacts the rope.
In the direction across the hoistway when the elevator system is stopped
Based on the extending damping arm and the car stop signal
A elevator <br/> equipment that includes a drive means for extending the damping arm.

[0006]

[Function] When a high-rise building shakes due to an earthquake or strong wind, the vibration is transmitted to the elevator system, and the rope for the main rope and the rope for weight compensation vibrate greatly, and the rope is moved from the groove of the hoist, etc. The traveling operation of the car is temporarily stopped in order to prevent the vehicle from deviating or generating abnormal vibration in the car. However, such rope vibrations last for a long time as they are due to the small internal attenuation of the rope, and require a long time to resume operation.

[0007] According to the elevator apparatus of the present invention, there is provided a pantograph-type link mechanism installed on the side wall of a hoistway entrance in synchronism with an elevator apparatus stop signal transmitted when a dangerous lateral swing of a building occurs. The swing arm is quickly extended in the cross direction of the hoistway, and the rope guide at the tip of the damping arm is brought into contact with and held by the elevator rope that swings sideways, so that the rope vibration is forcibly suppressed. be able to. Therefore, the lateral swing of the car, which increases the passengers' anxiety, also decreases .

[0008]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, a plurality of ropes 5 for a main rope are hung on a hoist 3 for driving an elevator installed on a floor 2 having a rope hole 1 in a machine room at the top of a hoistway, and a deflector 4 At both ends of the rope 5 for the main rope, a car 7
And a counterweight 8 are suspended. On the other hand, in order to prevent the load as viewed from the hoist from changing according to the position of the car 7, a plurality of ropes 9 for compensating for the weight of the main rope 5 are provided on the pulley 10 at the bottom of the hoistway. It is connected to the lower part of the car 7 and the counterweight 8 through the middle.
Now, if the building sways due to the earthquake or strong wind, and the ropes 5 and 9 of the elevator device sway accordingly,
When the amplitude exceeds a certain value, it is mandatory for safety to stop the elevator device, prevent the rope from deviating from the groove of the hoist, and prevent abnormal vibration from occurring in the car. ing. However, since such rope runout has little internal damping of the rope, it continues for a long time as it is, and it takes a long time to resume operation.

Therefore, the damping arm 11 having the link mechanism shown in FIG. 2 is extended from the hoistway wall 21 side while the elevator device is stopped, and held so as to be in contact with the ropes 5 and 9. Stop the vibration forcibly. At this time, the holding force of the damping arm needs to be large enough to overcome the reaction force from the rope. If the reaction force from the rope is larger than the holding force of the damping arm, the rope and the damping arm are displaced together, but in this case, the elastic body is installed to extend and contract the damping arm. 12 has a damper function, or a damper device 2 as shown in FIG.
By using 2 in combination, the vibration of the rope can be promptly suppressed by absorbing the vibration energy by the damper. The timing of extending or contracting the damping arm 11 can be manually performed by an elevator manager. For example, a control signal such as a car displacement limiter signal or an elevator stop signal is used as a trigger signal. By extending and contracting the damping arm, the elevator rope can be more effectively damped.

FIG. 3 shows details of the vibration control arm 11 having a pantograph-type link mechanism. During normal operation of the elevator apparatus, the damping arm 11 is housed in a contracted shape on the hoistway wall side by the elastic body 12, so that there is no obstacle to elevating the elevator. However, when the ropes 5 and 9 vibrate greatly during a strong wind or earthquake, and the elevator system stops,
At the same time, the motor 14 winds the wire 16 against the reaction force of the elastic body, and the vibration control arm 11 having a link mechanism.
Is stretched until it touches the rope, and the vibration of the rope is forcibly stopped. If the reaction force from the rope is greater than the holding force of the damping arm, the rope and the damping arm are displaced together, but in this case, the elastic body 12 installed to shrink the damping arm By providing the damper function or using the damper device 22 together, the vibration energy can be absorbed by the damper device, and the vibration of the rope can be suppressed promptly. The above is the description of the mechanism for suppressing the vibration of the rope in the direction of extension and contraction of the vibration control arm having the link mechanism. Protrusions 23 are provided on both sides of the rope guide 20 at the end of the rope, and the vibration of the rope is forcibly stopped by the protrusions 23.

The above is a description of one embodiment of the present invention. The feature of this embodiment is that the vibration of the rope for the main rope and the rope for weight compensation of the long-stroke elevator apparatus is determined by the position of the antinode of the vibration of the rope. The vibration of the rope can be forcibly stopped by extending the vibration-damping arm having a link mechanism attached to the hoistway wall side so as to come in contact with the rope when the elevator device is stopped. . Also, when the holding force of the damping arm is smaller than the rope reaction force, the damping arm and the rope vibrate integrally, but in this case, the vibration energy is absorbed by the damper attached to the damping arm, Rope vibration can be attenuated quickly.

Next, another embodiment of the present invention will be described with reference to FIG. In the embodiment of FIG. 3, the elastic body exerts a force in the direction of contracting the damping arm, and when the damping arm is extended, the wire is wound by a motor against the reaction force of the elastic body. And the elastic body 12 and the motor 1
4. The relationship between the wires 16 is reversed, and the elastic body 12 exerts a force in the direction in which the damping arm 11 extends, and when the damping arm 11 is contracted, the motor 14 is opposed to the reaction force of the elastic body 12.
The same effect can be obtained by winding the wire 16 by using.

Another embodiment of the present invention will be described with reference to FIG. In FIG. 4, the elastic body acts on the force in the direction in which the damping arm extends, and when the damping arm is contracted, it is performed by winding the wire with a motor against the reaction force of the elastic body, as shown in FIG. In addition, the elastic body 12 is
When the force is exerted in the direction in which the elastic member 12 is extended and the damping arm 11 is contracted, it can also be performed by attracting by the electromagnet 24 or the like against the reaction force of the elastic body 12. or,
In this case, during the normal operation of the elevator apparatus, if the damping arm 11 is contracted by attracting one of the support portions 27 of the damping arm by the electromagnet 24 or the like, and it becomes necessary to dampen the rope, By turning off the electromagnet 24, the vibration control arm 11 can be extended with high responsiveness.
Also in this case, as in the case of FIGS. 3 and 4, the roles of the elastic body and the electromagnet are reversed, and the elastic body exerts a force in the direction of contracting the damping arm, and when the damping arm is extended, it is attracted by an electromagnet or the like. It can easily be inferred that the same effect can be obtained even if the above operation is performed.

Another embodiment of the present invention will be described with reference to FIG. In FIG. 6, a self-propelled device 25 such as a motor is directly provided on one of the damping arm support portions 27, and the self-propelled device 25 is moved to expand and contract the damping arm 11. This has the advantage that an indirect force transmission mechanism such as a wire is not required.

Although FIGS. 3 to 6 show that one of the damping arm support portions 27 is supported by a pin, it can be easily analogized that the same effect can be obtained even if both are movable. .

When the main rope and the weight compensating rope vibrate, the apparatus can be installed in several places on the hoistway wall side at the antinode of the vibration. In order to install it in a place, it is necessary to provide a new place for installation in the building, which increases costs.

Therefore, as shown in FIG. 7, the present apparatus is installed above or below the entrance 26 of the elevator. If it is above the entrance, maintenance of the equipment is easy.

However, since the upper surface of the entrance in the hoistway wall and the upper surface of the car are not flush with each other structurally, when the vibration control arm on the floor where the car is stopped by the stop signal due to the lateral swing extends, It will collide with obstacles on the top of the car. Therefore, when the elevator device stop signal is transmitted, the stop floor of the car is detected, and based on the output signal, if there is a damping arm above the entrance of the floor, only the damping arm is activated. The configuration is such that it is not allowed.

[0020]

As described above, according to the elevator rope vibration preventing device of the present invention, when the rope of the long-stroke elevator device starts to vibrate due to the occurrence of the lateral vibration of the high-rise building due to the earthquake or strong wind, the pantograph-type device is used. a plurality of damping arm having <br/> link Organization, since quick extension contacts held toward the hoistway wall on the elevator ropes, to quickly suppress the vibration of the rope, preventing the deflection side of the car can do. Thus, even during an earthquake or strong wind
This enables stable operation of the long-stroke elevator apparatus.

[Brief description of the drawings]

FIG. 1 is a sectional view of a hoistway of an elevator apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II of FIG. 1 showing one embodiment of the present invention.

FIG. 3 is a configuration diagram of a vibration control arm having a link mechanism according to one embodiment of the present invention.

FIG. 4 is a configuration diagram of a vibration control arm according to another embodiment of the present invention.

FIG. 5 is a configuration diagram of a vibration damping arm according to another embodiment of the present invention.

FIG. 6 is a configuration diagram of a vibration control arm according to another embodiment of the present invention.

FIG. 7 is an explanatory view of installation and operation of the device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rope hole 3 Hoist 4 Warp wheel 5 Main rope rope 7 Riding basket 8 Counterweight 9 Weight compensation rope 10 Pulley 11 Damping arm 12 Elastic body 13 Fixing member 14 Motor 15 Pulley 16 Wire 17 Supporting stand 18 Counterweight rail DESCRIPTION OF SYMBOLS 19 Riding car rail 20 Rope guide part 21 Hoistway wall 22 Damper 23 Projection part 24 Electromagnet 25 Self-propelled device 26 Elevator entrance / exit 27 27 Damping arm support part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP 50-5047 (JP, A) JP 50-15315 (JP, Y1) JP 48-33191 (JP, Y1) (58) Field (Int.Cl. ⁶ , DB name) B66B 5/02 B66B 7/06

Claims (1)

(57) [Claims] 1. A car and a counterweight suspended from and lifted by a plurality of main ropes wound by a hoist installed in a machine room, and a plurality of cars and a lower part of each of the car and the counterweight connected to each other. An elevator apparatus comprising: a weight compensating rope; a telescopic pan having an original end attached to an entrance / exit side wall of a hoistway of the elevator apparatus.
A pantograph-type link provided with a tag-type link mechanism
The mechanism has a rope guide at the front end that abuts the rope, and crosses the hoistway when the elevator system stops.
A damping arm, extending in a direction that, Shin stop the car
Elevator apparatus characterized by comprising a driving means for stretching the damping arm based on the item.