JP2010285241A - Vibration damping device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a space-saved and inexpensive vibration damping device of an elevator capable of restraining the vertical vibration of a car. <P>SOLUTION: The vibration damping device of the elevator includes a damper arranged in a roller of a roller guide device installed in the car and imparting a variable damping force around a rotary shaft of the roller, and a damper opens the car when operating the car by a controller, and restrains the vertical vibration of the car by braking the car at stopping. A damping force of the damper is controlled to the vertical vibration of the car, and vertical vibration can also be restrained. The function of restraining vibration in the vertical direction of the car can be arranged in the roller guide device of the elevator. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator vibration damping device, and more particularly to an elevator vibration damping device using a variable damping damper for suppressing vertical vibration of an elevator car.

  Conventionally, in an elevator, in order to suppress the vertical vibration of the car when passengers get on and off, it has been proposed to provide a vibration control device against the vertical vibration in relation to the car, the counterweight or the balance wheel part. Has been. In a certain vibration damping device, it has been proposed to provide a spring and a damper as a vibration damping device between two balanced weights to reduce rotational vibrations of the sheave and the compensator pulley (for example, Patent Documents). 1).

JP-A-6-1003003

  However, the conventional vibration damping device provided with a spring, a damper, etc. in relation to such a counterweight requires a relatively large installation space, and can meet the demands for miniaturization and space saving of the elevator. In addition, there is a problem that the cost is high.

  Accordingly, an object of the present invention is to provide an elevator vibration control device that can suppress vertical vibrations of a car and can meet the demand for space saving at low cost.

  An elevator vibration damping device according to the present invention is provided on a roller guide device having a roller attached to an elevator lifting body and having a roller that rolls on a guide rail and guides the lifting body along the guide rail. And a damper that gives the roller a variable damping force around the rotation axis of the roller, and the damper controls the damper so that the damper generates a damping force when the lifting body is stopped, and the lifting body moves. An elevator damping device comprising a controller that prevents the damper from generating a damping force.

The elevator vibration control device of the present invention is also provided with a roller guide device that is attached to the elevator lifting body and has a roller that rolls on the guide rail and guides the lifting body along the guide rail. A damper that is provided and applies a variable damping force around the rotation axis of the roller to the roller, and a controller that controls the damper and controls the damping force of the damper according to the vertical vibration of the lifting body. An elevator vibration control device characterized by the above.

  According to the elevator vibration damping device of the present invention, the elevator roller guide device can be provided with a function of suppressing the vertical vibration of the car.

1 is a schematic front view showing an embodiment of a vibration damping device for an elevator according to the present invention. FIG. 2 is an enlarged view of a portion surrounded by a circle A in FIG. 1. FIG. 3 is a schematic top view of the roller guide device shown in FIG. 2. It is a schematic front view which shows another embodiment of the vibration damping device of the elevator of this invention.

  Embodiments of the present invention will be described below.

Embodiment 1 FIG.
FIG. 1 is a schematic front view showing an embodiment of an elevator vibration control device according to the present invention. A car 1 which is an elevator lifting body to which an elevator vibration control device is attached is suspended by a main rope 2. The door drive device 3 is provided with a door 4 that opens and closes the doorway. The car 1 is also provided with a roller guide device 5 that guides the car 1 along the guide rail 6. As will be described in detail later, the roller guide device 5 is attached to the elevator car 1 and is provided on the roller 7 and a roller 7 that rolls on the guide rail 6 to guide the car 1 along the guide rail 6. The damper 9 that gives the roller 7 a variable damping force around the rotating shaft 8 of the roller 7 and the damper 9 is controlled so that the damper 9 generates a damping force when the car 1 is stopped, and the car 1 is moving. Includes a controller 10 that prevents the damper 9 from generating a damping force. The controller 10 of the roller guide device 5 is connected to an open / close sensor 12 provided in the door driving device 3 on the car 1 by a wire 11 and controls the damper 9 in accordance with the opening / closing of the door 4 of the car 1. It is.

  2 and 3 show details of the structure of the roller guide device 5 to which the elevator vibration damping device of the present invention is applied. FIG. 2 is an enlarged view of a portion surrounded by a circle A in FIG. FIG. 3 is a top view of FIG. 2. In these drawings, a roller arm 14 is pivotally attached to a frame 13 attached to the top wall of the car 1 by a pin 15, and a rotating shaft 8 that rotatably supports the roller 7 is attached to the roller arm 14. ing. A roller 7 is attached to the rotating shaft 8 so as to be rotatable. A damper 9 having a variable damping force is provided between the roller 7 and the rotating shaft 8.

  The damper 9 is, for example, a brake or clutch that brakes the rotation of the roller 7. For example, such a damper 9 may be a magnetic sleeve portion 16 fixed to the rotating shaft 8 and a magnetic member that rotates together with the roller 7. A rotating part 17 of the body, a variable viscous magnetic fluid 18 interposed between the sleeve part 16 and the rotating part 17, and a magnetic field is generated in the variable viscous magnetic fluid 18 by energization to change the viscosity thereof. What comprises the electromagnetic coil 19 which controls transmission of the force between the rotation parts 17 can be used.

  The roller guide device 5 includes a spring device 20 that brings the roller 7 into contact with the guide rail 6 with pressure. The spring device 20 is supported by a column 21 attached to the frame 13, and a compression spring 24 provided between the roller arm 14 and the retaining nut 23 on a rod 22 extending through the roller arm 14. I have.

  In such an elevator vibration control device, the variable viscous magnetic fluid 18 of the damper 9 has a low viscosity when the elevator is raised and lowered, and the roller 7 can freely rotate with respect to the rotating shaft 8 without receiving running resistance. The guide rail 6 receives normal guidance. When the elevator stops at the landing, the open / close sensor 12 detects that the door 4 has been opened and sends a car stop signal to the controller 10. The controller 10 energizes the electromagnetic coil 19 of the damper 9 to change the variable viscous magnetic fluid 18. A magnetic field is generated in the surface to increase its viscosity. For this reason, the roller 7 is in a braking state with respect to the rotating shaft 8, and a frictional force acts between the roller 7 and the guide rail 6 to stop the car 1 without vibrating the car 1 even if the passenger gets on and off. It can be maintained in a state.

Embodiment 2. FIG.
In the elevator vibration damping device shown in FIG. 4, the controller 10 is configured to control the damper 9 in accordance with the vertical vibration of the car 1 that is the lifting body. 10 is provided with a vibration sensor 25 connected to 10. In the illustrated example, the vibration sensor 25 is attached to the top wall of the car 1.

  In this elevator damping device, when the vibration sensor 25 detects vertical vibration exceeding a preset reference value, the variable damping force of the damper 9 is controlled so as to suppress vertical vibration of the car 1. At this time, the magnitude of the viscosity of the variable viscous magnetic fluid 18 can be adjusted according to the magnitude of the vertical vibration. As a result, it is possible to effectively suppress the vertical vibration of the cage caused by the misalignment of the sheave (not shown) of the hoisting machine other than the vertical vibration generated when the passenger gets on and off. Ride comfort is secured.

  The elevator vibration damping device illustrated and described above is merely an example, and various modifications are possible, and all the features of each specific example can be used in combination. For example, in the illustrated example, the open / close sensor and the vibration sensor are used separately, but may be used in combination. Moreover, it can also provide not only in the cage | basket | car 1 but in a counterweight, and can also be provided only in a counterweight. In this case, a signal for operating the damper 9 is supplied from an opening / closing sensor 12 for the door 4 provided in the car 1. In addition, although each roller guide device 5 has one controller 10, only one common controller 10 can be used for the plurality of roller guide devices 5.

  The present invention is applicable to an elevator vibration control device.

  1 car, 2 main rope, 3 door drive device, 4 door, 5 roller guide device, 6 guide rail, 7 roller, 8 rotating shaft, 9 damper, 10 controller, 11 wiring, 12 open / close sensor, 13 frame, 14 roller arm , 15 pin, 16 sleeve portion, 17 rotating portion, 18 variable viscous magnetic fluid, 19 electromagnetic coil, 20 spring device, 21 strut, 22 rod, 23 retaining nut, 25 vibration sensor, 25 vibration sensor.

Claims (5)

A roller guide device having a roller attached to a lifting body of an elevator and having a roller that rolls on a guide rail and guides the lifting body along the guide rail;
A damper provided on the roller to give the roller a variable damping force around the rotation axis of the roller;
A controller for controlling the damper so that the damper generates a damping force when the lifting body is stopped, and prevents the damper from generating a damping force during the movement of the lifting body. Elevator damping device featuring.   2. The elevator vibration damping device according to claim 1, wherein the lifting body includes a car, and the controller includes an opening / closing sensor that detects opening / closing of the door of the car. A roller guide device having a roller attached to a lifting body of an elevator and having a roller that rolls on a guide rail and guides the lifting body along the guide rail;
A damper provided on the roller to give the roller a variable damping force around the rotation axis of the roller;
An elevator vibration control device comprising: a controller that controls the damper to control a damping force of the damper according to vertical vibrations of the lifting body.   4. The elevator vibration damping device according to claim 3, wherein the lifting body includes a car, and the controller includes a vibration sensor that detects vertical vibrations of the car.   5. The vibration damping device for an elevator according to claim 1, wherein the damper is a brake or a clutch that brakes rotation of the roller.

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