JP3868789B2 - Elevator equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator apparatus of a type in which a main rope is wound around a car suspension car provided at the lower part of a car such as a 2: 1 roping system.
[0002]
[Prior art]
In general, when a building shakes due to an earthquake, strong wind, or the like, a horizontal displacement, that is, a shake, also occurs in the main rope that suspends the elevator car. Since such displacement increases as the height of the building increases, the main rope may be displaced over the entire hoistway plane when the car is located near the lowest floor in an elevator apparatus with a high lift.
[0003]
Normally, the hoistway is equipped with various devices such as guide rails, landing door devices, various switches for car control, etc., so that if the main rope is swung, the main rope will be caught by these devices. Or collided with each other, and both suffered damage.
[0004]
On the other hand, conventionally, a method has been proposed in which a steadying device that regulates the swing width of the main rope is installed in the hoistway. However, in this method, since the steady rest device is disposed in the hoistway, a large-scale device is required so that the steady rest device itself does not interfere with the car, and a lot of cost is required.
[0005]
Conventionally, a method for actively suppressing the swing of the main rope has also been proposed. FIG. 4 is a block diagram showing a main part of a conventional elevator apparatus disclosed in, for example, Japanese Patent Laid-Open No. 4-361966, and specifically shows a machine room of a 1: 1 roping type elevator apparatus.
[0006]
In the drawing, a drive sheave 2 that is rotationally driven by a hoisting machine (not shown) is provided in a machine room 1. In the vicinity of the drive sheave 2, a rotatable baffle 3 is provided. A main rope 4 is wound around the drive sheave 2 and the deflector wheel 3. A cage (not shown) is suspended from one end of the main rope 4. A counterweight (not shown) is suspended from the other end of the main rope 4.
[0007]
On the floor 1a of the machine room 1, a displacement detector 5 for detecting the horizontal displacement of the building is installed. A plurality of vibration control devices 6 that press the main rope 4 in response to a signal from the displacement detector 5 are installed on the floor 1a.
[0008]
In such a conventional elevator apparatus, when the displacement of the building in the horizontal direction is detected by the displacement detector 5, the main rope 4 is pressed by the vibration control device 6 in the direction opposite to the displacement of the building. Thereby, the swing of the main rope 4 is suppressed and interference with the main rope 4 and the apparatus in a hoistway is also prevented.
[0009]
[Problems to be solved by the invention]
In the conventional elevator apparatus configured as described above, the vibration damping device 6 is disposed in the machine room 1, and the drive sheave 2 and the baffle 3 that are the restraint points of the main rope 4 to the vibration damping device 6. The distance is short. For this reason, it is difficult to sufficiently suppress the swing of the main rope 4, and the force required to suppress the swing of the main rope 4 becomes very large, and the vibration damping device 6 becomes large.
[0010]
The present invention has been made in order to solve the above-described problems, and an elevator capable of efficiently suppressing horizontal vibration of the main rope while preventing the steady rest from interfering with the car. The object is to obtain a device.
[0011]
[Means for Solving the Problems]
In the elevator apparatus according to the present invention, a car suspension car is provided at the lower part of the car, and the car is suspended by a main rope wound around the car suspension car. An anti-skid device having an enclosure that surrounds the main rope and restricts the displacement of the main rope in the horizontal direction is mounted, and the main rope is placed between the car suspension and the anti-static device on the side of the car. A restricting device for restricting the displacement of the main rope in the horizontal direction by being enclosed is provided .
[0012]
Also provided is the car suspending pulleys in the lower part of the car, a elevator apparatus is suspended the car by the main rope wound around the car suspension sheave, the top of the cage, surrounding the main rope The anti-sway device having an enclosing part that regulates the horizontal displacement of the main rope is mounted. By doing so, a regulating device that regulates the displacement of the main rope in the horizontal direction is suspended .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a main part of an elevator apparatus according to Embodiment 1 of the present invention. Specifically, a car of a 2: 1 roping type elevator apparatus is shown.
[0014]
In the figure, a pair of car suspension wheels 12 having a function of a moving pulley is provided at the lower part of the car 11. A main rope 13 is wound around the car suspension wheel 12. The car 11 is suspended in the hoistway by the main rope 13. Both ends of the main rope 13 are connected to a rope stopping member provided at the upper part of the hoistway. The main rope 13 is wound around a drive sheave of a drive device (not shown) and a balance weight suspension wheel of a balance weight (not shown).
[0015]
Mounted on the upper portion of the car 11 are a plurality of steadying devices 14 that engage with the main rope 13 and suppress the deflection of the main rope 13. The steady rest device 14 of Embodiment 1 has, for example, a ring-shaped surrounding portion 14a that surrounds the main rope 13 and restricts the displacement of the main rope 13 in the horizontal direction. The steady rest device 14 restrains the shake of the main rope 13 as a whole by regulating the horizontal displacement of the main rope 13 at the top of the car 11.
[0016]
In such an elevator apparatus, since the steadying device 14 is arranged on the upper part of the car 11, the distance from the car suspension vehicle 12 that is a restraint point of the main rope 13 to the steadying device 14 is usually about 3.5 m. Become. Since the steady rest device 14 regulates the displacement of the main rope 13 in the horizontal direction, the steady rest device 14 can be substantially regarded as a restraint point of the main rope 13.
[0017]
For this reason, the length of the main rope 13 at the vibrating portion is shortened by the distance from the car suspension vehicle 12 to the steady rest device 14. Since the vibration amplitude of the vibration of the main rope 13 becomes smaller as the length of the vibrating portion becomes shorter, the vibration of the main rope 13 can be suppressed by arranging the steadying device 14 on the car 11.
[0018]
Further, since the steady rest device 14 is provided on the car 11, the problem of interference with the car 11 does not occur. Therefore, the horizontal vibration of the main rope 13 can be efficiently suppressed while preventing the steady rest device 14 from interfering with the car 11. Further, the present invention can be easily applied to a machine room-less type elevator apparatus that does not have a machine room at the upper part of the hoistway.
[0019]
Embodiment 2. FIG.
Next, FIG. 2 is a block diagram showing a main part of an elevator apparatus according to Embodiment 2 of the present invention. In the figure, a plurality of anti-sway devices 15 that are engaged with the main rope 13 and suppress the shake of the main rope 13 are mounted on the upper portion of the car 11. The steady rest device 15 according to the second embodiment includes a detector 16 that detects the shake of the main rope 13, a ring-shaped engagement portion 17 that engages with the main rope 13, and the information from the detector 16. A driving device 18 for displacing the joint portion 17 in the horizontal direction is provided.
[0020]
As a detection method by the detector 16, for example, a method of directly detecting the horizontal displacement of the main rope 13, a method of detecting a force when the main rope 13 contacts the engaging portion 17, or an inclination angle of the main rope 13. There is a method of detecting this. Further, as the detector 16, a displacement meter, a strain meter, a camera image processing device, or the like is used according to a detection method. The driving device 18 is provided with a control unit (not shown) that calculates the driving direction and the driving amount of the engaging unit 17 based on information from the detector 16.
[0021]
In such an elevator apparatus, when the main rope 13 is shaken, the direction and magnitude of the shake are detected by the detector 16. The detected information is output to the driving device 18. In the control unit of the driving device 18, an appropriate driving direction for reducing the deflection of the main rope 13 from the displacement of the main rope 13 detected by the detector 16, the contact force of the main rope 13, or the angle of the main rope 13. And the driving amount is calculated.
[0022]
Then, the engaging portion 17 is driven in the horizontal direction according to the calculation result. Specifically, the engaging portion 17 is moved so that a force in the direction opposite to the horizontal displacement of the main rope 13 is applied to the main rope 13. Thus, by applying an external force to the main rope 13 actively and periodically from the steadying device 15, the main rope 13 is acted so as to be canceled out, and the main rope 13 is prevented from shaking.
[0023]
Therefore, the horizontal vibration of the main rope 13 can be efficiently suppressed while preventing the steady rest device 15 from interfering with the car 11. Further, the present invention can be easily applied to a machine room-less type elevator apparatus that does not have a machine room at the upper part of the hoistway.
[0024]
Furthermore, in the conventional elevator apparatus shown in FIG. 4, the distance from the restraint point (the drive sheave 2 and the deflector 3) of the main rope 4 to the vibration damping device 6 is about 0.5 to 1.0 m. On the other hand, in Embodiment 2, since the steady rest device 15 is arrange | positioned at the upper part of the cage | basket | car 11, the distance between restraint points will be about 3.5 m. Therefore, the horizontal vibration of the main rope 13 can be suppressed with a smaller force, and the drive device 18 can be downsized.
[0025]
Embodiment 3 FIG.
Next, FIG. 3 is a block diagram showing a main part of an elevator apparatus according to Embodiment 3 of the present invention. In the figure, a plurality of regulating devices (buffer bodies) 19 for regulating the displacement of the main rope 13 in the horizontal direction between the car suspension wheel 12 and the steady rest device 14 are provided on the side surface of the car 11.
[0026]
The regulating device 19 is, for example, a cylindrical member through which the main rope 13 is inserted, and is preferably made of a resin or the like so as not to damage the main rope 13 when coming into contact with the main rope 13. Further, one regulation device 19 may be arranged on each side of the car 11, or a plurality of regulation devices 19 may be arranged as shown in FIG. Other configurations are the same as those in the first embodiment.
[0027]
In such an elevator apparatus, since the regulating device 19 is provided on the side surface of the car 11, it is possible to more reliably prevent the main rope 13 from interfering with the car 11. As a result, it is possible to prevent occurrence of a collision sound between the main rope 13 and the car 11 and damage to the main rope 13 due to the collision with the car 11. Further, since the displacement of the main rope 13 is restricted even at the portion between the car suspension wheel 12 and the steady rest device 14 and the restraint point of the main rope 13 is increased, the vibration mode of the main rope 13 is changed, and the steady rest device. Compared with the case where only 14 is provided, the maximum swing displacement of the main rope 13 can be reduced.
[0028]
In the third embodiment, the steadying device 14 and the regulating device 19 of the first embodiment are combined, but the steadying device 15 and the regulating device 19 of the second embodiment may be used in combination.
[0029]
The regulating device 19 may be directly fixed to the side surface of the car 11, but may be hung from the upper portion of the car 11 or from the steadying device.
Further, a restricting device may be additionally provided above the steady rest device.
[0030]
In addition, the material of the surrounding portion 14a in the first and third embodiments and the engaging portion 17 in the second embodiment is not particularly limited. For example, a resin or the like may be used so that the main rope 13 is not damaged by contact with the main rope 13. It is desirable to use a material that is softer than the main rope 13 and has a small friction coefficient.
[0031]
Further, in the first to third embodiments, the 2: 1 roping type elevator apparatus is shown. However, if the elevator apparatus is a type in which a car suspension is provided at the lower part of the car, the roping system is limited to 2: 1. Not.
[0032]
【The invention's effect】
As described above, in the elevator apparatus according to the present invention, the anti-sway device that engages with the main rope and suppresses the main rope's shake is directly attached to the upper part of the car. The horizontal vibration of the main rope can be efficiently suppressed while preventing this.
[0033]
Further, since the steady rest device restrains the main rope from swinging by restricting the displacement of the main rope in the horizontal direction, the swing of the main rope can be restrained with a simple structure.
Furthermore, since the steady rest device has the surrounding portion that surrounds the main rope and restricts the displacement of the main rope in the horizontal direction, the structure can be further simplified.
Furthermore, the steady rest device has a detector that detects the swing of the main rope, an engaging portion that engages with the main rope, and a drive device that displaces the engaging portion in the horizontal direction according to information from the detector. As a result, the swing of the main rope can be actively suppressed. Further, the horizontal vibration of the main rope 13 can be suppressed with a smaller force, and the drive device can be miniaturized.
In addition, the drive unit is provided with a control unit that calculates the drive direction and drive amount of the engagement unit based on information from the detector, and the engagement unit is driven so as to cancel out the swing of the main rope. Therefore, the main rope runout can be suppressed more efficiently.
Furthermore, the side of the car is provided with a regulating device that regulates the displacement of the main rope in the horizontal direction between the car suspension and the steady rest, so that the main rope can more easily interfere with the car. While being able to prevent reliably, the maximum swing displacement of a main rope can be made small.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a main part of an elevator apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a configuration diagram showing a main part of an elevator apparatus according to Embodiment 2 of the present invention.
FIG. 3 is a configuration diagram showing a main part of an elevator apparatus according to Embodiment 3 of the present invention.
FIG. 4 is a configuration diagram showing a main part of an example of a conventional elevator apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Car, 12 Car suspension wheel, 13 Main rope, 14, 15 Stabilizer, 14a Enclosure part, 16 Detector, 17 Engagement part, 18 Drive apparatus, 19 Control apparatus.

Claims (2)

An elevator apparatus in which a car suspension car is provided at a lower part of the car, and the car is suspended by a main rope wound around the car suspension car,
On the upper part of the car, there is mounted an anti-skid device having an enclosure portion that surrounds the main rope and restricts the displacement of the main rope in the horizontal direction ,
A regulating device is provided between the car suspension wheel on the side of the car and the steadying device to regulate the displacement of the main rope in the horizontal direction by surrounding the main rope. Elevator device characterized. An elevator apparatus in which a car suspension car is provided at a lower part of the car, and the car is suspended by a main rope wound around the car suspension car,
On the upper part of the car, there is mounted an anti-skid device having an enclosure portion that surrounds the main rope and restricts the displacement of the main rope in the horizontal direction ,
The restraining device suspends a regulating device that regulates the displacement of the main rope in the horizontal direction by surrounding the main rope between the car suspension vehicle on the side of the car and the steadying device. An elevator apparatus characterized by being lowered .

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