JP5365090B2 - Elevator equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an elevator device provided with a car vibration restraining device for generating a suction force between a car and a landing floor, and preventing vertical vibration, by which a car level is fluctuating, by actuating the car vibration restraining device. <P>SOLUTION: This elevator device includes an elevator control device 5 for correcting the level of a car 10 by controlling a hoisting machine 6 to eliminate variation of a car stopping level due to change of an elongation amount of a rope 8 based on variation of a load in a car 10. The device includes: floor-landing level detection devices 12, 14 for detecting that the car 10 arrives at a stand 13 of a landing floor and transmitting position information of the car 10 to the elevator control device 5; and a car vibration restraining device 16 for generating a suction force between the car 10 and the stand 13 at the landing floor by a command of the elevator control device 5 based on signals from the floor-landing level detection devices 12, 14. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus provided with a vibration suppressing device that suppresses vibration of a car caused by a change in the amount of elongation of a rope based on a change in the load on the car.

  In general, elevators require advanced floor level control that controls the level at which the car stops so as to minimize the difference between the floor level of the floored car and the level of the hall floor. . This floor level control can be broadly divided into a control for decelerating the traveling car and landing the car on the destination floor, and a change in the load in the car due to passengers getting on and off in the landing state. There is a control for correcting the level because the expansion / contraction amount of the main rope changes and a deviation occurs between the floor level of the car and the level of the hall floor.

  With regard to the latter control, conventionally, a landing level detection device is attached to the elevator landing floor car platform, and from that device, for example, the difference between the floor level of the landing car and the level of the hall floor is predetermined. It is configured to output an ON signal when it is within the value, and an OFF signal when it exceeds a predetermined value. When the level difference exceeds a predetermined value, the brake of the hoisting machine is released, and the hoisting machine The level correction is performed by rotating (see Patent Document 1, for example).

Japanese Patent Laid-Open No. 6-64853 (Summary Column, FIG. 4)

  In the technology disclosed in the patent document, in the case of an elevator installed in a high-rise building with a height of 200 m to 500 m, the rope becomes long and the spring constant becomes small, and the amount of change in level per unit load is small. The purpose is to prevent this because it becomes large.

  However, in the technique disclosed in the above-mentioned patent document, when the main rope is long and the spring constant of the rope system is small, as in an elevator installed in a high-rise building, the vertical vibration with the car level still fluffing is generated. There is a problem that easily occurs physically.

  The present invention has been made to solve the above-described problems, and provides a car vibration suppression device that generates a suction force between the car and the landing floor, and operates the car vibration suppression device to An object of the present invention is to obtain an elevator apparatus that does not generate a fluffy vertical vibration.

The elevator apparatus according to the present invention is an elevator apparatus including an elevator control device that controls a hoisting machine and performs level correction in order to eliminate a shift in a car stop level due to a change in the amount of elongation of a rope based on a change in the load in the car. A landing level detecting device for detecting that the car has arrived at the landing floor and transmitting position information of the car to the elevator control device; and the elevator control device based on a signal from the landing level detecting device. A car vibration suppressing device that generates a suction force between the car and the landing floor in accordance with a command of the car, and the car vibration suppressing device is driven by the suction force and is frictioned with a guide rail. Rail friction generating means for generating force is provided.

  According to the elevator apparatus according to the present invention, the fluffy feeling caused by the vertical vibration of the elevator installed in the high-rise building can be suppressed by the suction force generated between the car and the landing floor.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an elevator apparatus according to the present invention will be described with reference to the accompanying drawings. The present invention is not limited to this.

Embodiment 1 FIG.
FIG. 1 is a system configuration diagram of an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a diagram showing a main part thereof.

  In FIG. 1, a converter 2 is connected to an AC power source 1, and the output of the converter 2 is smoothed by a smoothing capacitor 3 and input to an inverter 4. Converter 2 and inverter 4 are each configured to be controlled by elevator control device 5, and a voltage having a desired voltage and a desired frequency is output from inverter 4. The output voltage of the inverter 4 is applied to a drive motor (not shown) of the hoisting machine 6, and the hoisting machine 6 is rotationally controlled by controlling the rotation of the driving motor. The hoisting machine 6 is provided with an encoder 7 for detecting the rotational position of the hoisting machine 6, and the hood back control is performed by inputting the output to the elevator control device 5.

  Further, a rope 8 is wound around the hoisting machine 6, a counterweight 9 is attached to one end portion of the rope 8, and a car 10 is attached to the other end portion. Furthermore, the hoisting machine 6 is provided with an electromagnetic brake device 11 that prevents the hoisting machine 6 from rotating.

  The car 10 is provided with a car-side landing level detection device 12, and the landing 13 on each floor is provided with a landing-side landing level detection device 14 that faces the car-side landing level detection device 12. The car-side landing level detection device 12 and the landing-side landing level detection device 14 detect that the car 10 has arrived at the landing 13 on the floor, and the position information of the car 10 is lifted by a transmission path (not shown). The data is transmitted to the control device 5. Further, the car 10 is provided with a transmission path 15 for transmitting a door opening / closing control signal at the time of landing or floor information of the car 10 to the elevator control device 5.

  FIG. 2 is a block diagram for explaining the main part of FIG. 1. As shown in FIG. 2, the car vibration suppression device 16 that generates a suction force between the elevator 13 and the car 10 on the lower floor of the elevator is shown. Is provided. The car vibration suppression device 16 is configured by, for example, an electromagnet, and generates a suction force by a magnetic force by energizing the electromagnet. The car-side electromagnet 17 provided on the floor and the landing-side electromagnet 18 provided on the floor of the landing 13 are configured. And the attachment position of the car side electromagnet 17 and the landing side electromagnet 18 is attached so that the position where the level difference between the floor of the car 10 and the floor of the landing 13 is eliminated becomes the center.

  The car-side electromagnet 17 receives a command from a control panel (not shown) that operates based on a command from the elevator control device 5, and turns on / off the energization of the car-side electromagnet 17 to turn on / off the attractive force. The car-side switch 19 that is turned off is provided, and the landing-side electromagnet 18 is also provided with a landing-side switch 20 that is similarly configured. The car-side switch 19 and the landing-side switch 20 constitute a car vibration suppression starter 21.

  When there are a plurality of landings on the lower floor, the landing-side electromagnets 17 and the landing-side electromagnets 18 are located on the landing side of each floor at a position where there is no level difference between the floor of each landing and the landing of the floor. Is attached. It is to be noted that the same effect can be obtained even if either the car 10 side or the landing 13 side is constituted by an electromagnet and the other is constituted by a permanent magnet and the energization of the electromagnet is controlled ON / OFF. FIG. 3 shows an embodiment in which a permanent magnet 22 is provided on the car 10 side and an electromagnet 18 is provided on the landing 13 side.

  The elevator apparatus according to Embodiment 1 is configured as described above, and the control thereof will be described next. FIG. 4 is a control flowchart of the elevator apparatus according to the first embodiment.

  The elevator apparatus sends a start command for causing the car 10 to travel to the destination floor, a door open / close command for door opening / closing control when the car 10 is landing, and a landing 13 on the floor where the car 10 is located. Control is performed using the floor information on the floor. When the car 10 is landed on the lower floor using these instructions, the car vibration suppression is provided for the car 10 and the landing 13 of the floor on which the floor 10 is located with the floor information and the door opening instruction. A command is given to the activation device 21 to activate the car vibration suppression device 16 to generate a suction force. Further, a command is given to the car vibration suppression activation device 21 by a door closing command and an elevator activation command to interrupt the suction force, and the car 10 can travel in the same manner as before landing.

  The flowchart of FIG. 4 shows this series of control flow. First, in Step 1, it is determined whether or not the car 10 is landing on the landing 13 and the car 10 is landing on the landing 13. Proceed to step 2.

  In step 2, it is determined whether or not the car 10 is stopped and a door open command is issued. If the car 10 is stopped and a door open command is issued, the process proceeds to step 3.

  In step 3, a start command is output to the car vibration suppression starter 21 to start the car vibration suppression apparatus 16. Thereby, the car-side electromagnet 17 and the landing-side electromagnet 18 are attracted, the car 10 is held in a fixed state with respect to the landing 13, and passengers get on and off.

  In step 4, it is determined whether the passenger boarding / exiting is finished, a door closing command is issued, and an elevator activation command is issued. If the door closing command is issued and the elevator activation command is issued, Proceed to step 5.

In step 5, a stop command is output to the car vibration suppression activation device 21 and the car vibration suppression device 16 is stopped . Thereby, the attraction of the car-side electromagnet 17 and the landing-side electromagnet 18 is released, the fixed state of the car 10 and the landing 13 is released, and the movement of the car 10 is started.

  Next, the effect of providing the car vibration suppression device 16 that generates a suction force between both the landing 13 and the car 10 will be physically described.

  There is a Dalanvale dynamic force balancing method as a method of derivation of the equation of motion. According to this Dalanvale dynamic force balancing method, in a vibrating system, an object of a certain mass moves with a certain acceleration. When the object is moving, a force (inertial force) acting in a direction to reduce the acceleration of the object acts, and when a mass object moves at a certain speed, a force (damping force) acting in a direction to reduce the object speed acts When an object with a certain mass is deformed, a force (restoring force) acting in a direction to reduce the deformation of the object is said to be acting. Then, when the object is vibrating, if the time is stopped and the sum of the dynamic resistance force at a certain moment is set to zero, inertial force + damping force + restoring force = 0 is obtained. Yes.

  For the longitudinal vibration of the elevator apparatus, the dynamic force balancing method of the duramber can be applied. Therefore, when the longitudinal vibration of the elevator apparatus is considered by applying this principle, the equation of motion due to the longitudinal vibration of the elevator apparatus is considered. Is expressed by the following equation 1 using the car mass m, the spring constant k (> 0), and the damping coefficient c (> 0). By generating the suction force F by the car vibration suppression device 16, It can be shown as the following two formulas. The first term in the following formulas 1 and 2 is the inertial force, the second term is the damping force, and the third term is the restoring force.

  The suction force by the car vibration suppression device 16 is attached so that the level difference between the floor of the car 10 and the floor of the landing 13 is eliminated, so that the vertical direction is centered on the position where the level difference is zero. Can be expressed by using a spring constant k1 (> 0) like F = −k1x, and substituting this F = −k1x into the above two equations gives the following three equations. Thus, the generation of the suction force F increases the spring constant teaching according to the following three formulas. That is, the spring constant of the system can be increased. Therefore, by operating the car vibration shaving device 16, it is possible to suppress the fluffy vertical vibration.

Embodiment 2. FIG.
Next, an elevator apparatus according to Embodiment 2 will be described. FIG. 5 is a partial configuration diagram illustrating the elevator apparatus according to the second embodiment, and corresponds to FIG. 2 of the first embodiment.

  In FIG. 5, a guide device 50 is provided on the floor of the car 10, and a permanent magnet 51 is attached to the guide device 50 so as to be slidable in the left-right direction in the drawing. A shoe 53 is attached to the permanent magnet 51 via an attachment member 52. The shoe 53 is configured to face the guide rail 54 of the elevator apparatus, and has a friction surface that generates friction with the guide rail 54. One end of a spring member 55 that functions as a pull-in device is attached to the guide device 50, and the other end of the spring member 55 is fixed to the bottom of the car 10. The guide device 50, the mounting member 52, the shoe 53, and the spring member 55 constitute rail friction generating means 56. Other configurations are the same as those in the first embodiment, and a description thereof will be omitted.

  The elevator apparatus according to Embodiment 2 is configured as described above, and the operation thereof will be described next.

  Now, as shown in FIG. 5 (a), when the car 10 arrives at the floor of a certain floor, a start command is output to the car vibration suppression start device 21, and the landing side switch 20 is turned on and the landing is made. The side electromagnet 18 is activated. When the landing-side electromagnet 18 is activated, the permanent magnet 51 is attracted to the landing-side electromagnet 18 against the spring force of the spring member 55 and slides along the guide device 50 as shown in FIG. The friction surface 53 is pressed against the guide rail 54. As a result, the shoe 53 generates a frictional force with the guide rail 54, and the car 10 is fixed to the landing floor.

  Next, when the passenger boarding / exiting is completed, a door closing command and an elevator activation command are issued, and a car vibration suppression device stop command is issued, the landing side switch 20 is turned off and the landing side electromagnet 18 is deactivated. . As a result, the attractive force between the landing-side electromagnet 18 and the permanent magnet is released, and the permanent magnet 51 is pulled to the original position along the guide device 50 by the spring force of the spring member 55, as shown in FIG. Return to the indicated position. As a result, the friction surface of the shoe 53 is separated from the guide rail 54 and the car 10 is in a free state with respect to the landing floor.

  As described above, in the elevator apparatus according to the second embodiment, similarly to the elevator apparatus according to the first embodiment, when the car 10 reaches the lower floor, based on the floor information and the door opening command. The car vibration suppressing device 16 is activated to generate a suction force. Further, the car vibration suppression activation device 21 is shut off based on the door closing command and the elevator activation command.

  When the car vibration suppression device 16 is activated, the friction surface of the shoe 53 is pressed against the guide rail 54 that guides the car 10, so that a frictional force is generated on the car 10 and the vibration is suppressed against the car vibration. Power works. When viewed in the longitudinal vibration system of the car 10, the value of the spring constant k is increased, and the attenuation of the longitudinal vibration can be stopped quickly.

  According to the elevator apparatus according to the present invention, the vertical vibration caused during the landing level correction control is applied to the elevator apparatus having a long ascending / descending process, such as an elevator apparatus installed in a high-rise building, by the car vibration suppression device. An elevator apparatus that can be suppressed and does not affect normal operation can be constructed.

1 is a system configuration diagram of an elevator apparatus according to Embodiment 1 of the present invention. It is a figure explaining the principal part of FIG. It is a figure which shows the other example of the elevator apparatus which concerns on Embodiment 1 of this invention. It is a control flowchart of the elevator apparatus which concerns on Embodiment 1 of this invention. It is a partial block diagram of the elevator apparatus which concerns on Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 AC power supply 2 Converter 3 Smoothing capacitor 4 Inverter 5 Elevator control device 6 Hoisting machine 7 Encoder 8 Rope 9 Balance weight 10 Car 11 Electromagnetic brake device 12 Car side landing level detection device 13 Platform 14 Landing side landing level detection device 15 Transmission path 16 Car vibration suppression device 17 Car side electromagnet 18 Platform side electromagnet 19 Car side switch 20 Platform side switch 21 Car vibration suppression activation device 50 Guide device 51 Permanent magnet 52 Mounting member 53 Shoe 54 Guide rail 55 Spring member 56 Rail Friction generating means

Claims (4)

In an elevator apparatus equipped with an elevator control device that controls the hoisting machine and corrects the level in order to eliminate the deviation of the car stop level due to the change in the amount of rope elongation based on the change in the load in the car,
A landing level detecting device for detecting that the car has arrived at the landing floor and transmitting the position information of the car to the elevator control device;
A car vibration suppression device that generates a suction force between the car and the landing floor according to a command from the elevator control device based on a signal from the landing level detection device;
With
The elevator apparatus according to claim 1, wherein the car vibration suppression device includes rail friction generating means that is driven by the suction force and generates a frictional force with the guide rail . Whether attached to one end of the rope wound around the sheave of the hoist,
An elevator control device for controlling the hoisting machine and landing the car on the landing floor;
A landing level detecting device for detecting that the car has arrived at the landing floor and transmitting the position information of the car to the elevator control device;
If the position information of the car detected by the landing level detection device is position information in which a level difference between the floor level of the car and the hall floor of the landing floor is within a predetermined value, a command of the elevator control device By the car vibration suppression device that generates a suction force between the car and the landing floor,
With
The elevator apparatus according to claim 1, wherein the car vibration suppression device includes rail friction generating means that is driven by the suction force and generates a frictional force with the guide rail .   The elevator apparatus according to claim 1, further comprising a car vibration suppression activation device that turns ON / OFF a suction force of the car vibration suppression device. The car vibration suppression device is:
A landing-side magnet provided on the landing floor;
A car-side magnet attached to the guide device provided in the car so as to be movable in the direction of the landing-side magnet;
With
The rail friction generating means is
The guide device;
A shoe attached to the car-side magnet via an attachment member and disposed so as to face the guide rail;
Elevator device according to any one of claims 1 to 3 comprising a.

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