JPH05155561A - Linear-mot0r driven elevator device - Google Patents

Abstract

PURPOSE:To shorten a guide rail as a stator to about half of the length of the vertical stroke of a cage. CONSTITUTION:A rope 6 located on the side of a balance weight 6 suspended from pulley blocks 4, 5 is reversed at its middle reversing portion 11 and a fixed portion 14 is provided which is fixed to the upper portion of an elevator shaft and a suspension pully 12 disposed at the top portion of the balance weight 6 is hung to the reversing portion 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor drive type elevator device, and more particularly to a linear motor drive type elevator in which a reaction plate is installed in a hoistway.

[0002]

2. Description of the Related Art FIG. 4 shows, for example, JP-A-57-12156.
This is a conventional linear motor drive type elevator device shown in Japanese Patent No. 8 publication. In the figure, 1 is a car, 2 is a rail for guiding the raising and lowering of the car, 3 is a rope for hanging the car, 4 is a suspension wheel as a pulley device, 5 is a deflection wheel, 6 is a counterweight, and 7 is a counterweight. It is a mover of a linear induction motor that constitutes a main part, and is composed of a primary winding. Reference numeral 8 denotes a stator composed of a secondary conductor of a linear induction motor, which forms a guide rail for the mover. Reference numeral 9 is a cable, and 10 is a hoistway wall.

Next, the operation will be described. By exciting the mover 7 made up of the primary winding of the linear motor by the electricity transmitted through the cable 9, a relative thrust force is generated between the mover 7 made up of the secondary conductor and the cage. It goes up and down along the rail 2.

[0004]

Since the conventional linear motor drive type elevator is constructed as described above, the guide rail as the stator composed of the secondary conductor is
Since it is necessary to install the car only for the length of the lifting and lowering stroke, the device is expensive.

The present invention has been made in view of the above problems, and it is an object of the present invention to make a guide rail as a stator approximately half the length of a car ascending and descending.

[0006]

In order to achieve the above object, a linear motor drive type elevator device according to the present invention is arranged such that a rope on a counterweight side lower than a pulley device is reversed from an intermediate reversing portion so as to be on a hoistway. A suspension unit disposed on the top of the counterweight is suspended on the reversing unit, thereby making the amount of movement of the counterweight about half the amount of movement of the car. I am doing it.

[0007]

The rope on the side of the counterweight is inverted from the intermediate reversing part and is doubled, so that the lifting stroke of the car is twice as long as the lifting stroke of the counterweight. Therefore, the guide rail that guides the linear motor mover, which constitutes the main part of the counterweight, is approximately half the length of the car ascending and descending.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described. The same parts as those in FIG. 4 are designated by the same reference numerals and the description thereof will be omitted. In the figure, reference numerals 4 and 5 are a pair of pulleys as pulley devices, which support a rope 3 for moving the car 1 up and down in a hoistway. Reference numeral 14 denotes a rope fixing portion, which fixes the end of the rope located on the side of the counterweight 6 through the pulley devices 4 and 5. This rope is inverted in a U shape at the intermediate inversion section 11. A suspension wheel 12 is provided on the top of the counterweight 6 by a pulley attachment device 13 and is suspended from the reversing section 11. A guide rail 8 as a linear motor stator that vertically guides a linear motor mover 7 that constitutes a main part of the counterweight 6 is installed for about half the hoistway length as shown in the figure.

With the above-mentioned structure, the counterweight side is so-called 2: 1 roping, and therefore the moving amount of the counterweight is half the moving amount of the car. Therefore, the guide rail, which is a stator composed of the secondary conductor of the linear motor, needs to be installed for only about half of the ascending / descending length of the car.

In the above embodiments, a linear induction motor as a motor has been described as an example. However, the linear induction motor is not limited to the linear induction motor, and all linear motor drive methods in which a linear motor is mounted on the counterweight side. The same effect can be obtained by applying to the elevator.

[0011]

As described above, according to the present invention, the rope on the counterweight side lower than the pulley device is inverted from the intermediate reversing portion, and the fixing portion for fixing the rope to the upper part of the hoistway is provided. By suspending the suspension wheel disposed on the top of the counterweight, the movement amount of the counterweight is reduced to about half the movement amount of the car. Therefore, as a stator composed of the secondary conductor of the linear motor, The length of the guide rails need only be set to about half the length of the car ascending / descending, which reduces the equipment cost and the amount of installation work and is extremely economical.

[Brief description of drawings]

FIG. 1 is a side view of an elevator system according to an embodiment of the present invention.

FIG. 2 is a front view of an elevator system according to an embodiment of the present invention.

FIG. 3 is a plan view of FIG.

FIG. 4 is a side view of a conventional elevator system.

[Explanation of symbols]

 1 Car 2 Guide rail 3 Rope 4, 5 Pulley device 6 Counterweight 7 Linear motor mover 8 Linear motor stator 10 Hoistway wall 11 Inversion section 12 Suspended vehicle

[Procedure amendment]

[Submission date] July 30, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

In order to achieve the above object, a linear motor drive type elevator device according to the present invention is arranged such that a rope on a counterweight side lower than a pulley device is reversed from an intermediate reversing portion so as to be on a hoistway. The inversion part is provided with a fixing part that is fixed to the part, and the suspension wheel disposed on the top of the counterweight is suspended on the reversing part.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

[0011]

As described above, according to the present invention, the rope on the counterweight side lower than the pulley device is inverted from the intermediate reversing portion, and the fixing portion for fixing the rope to the upper part of the hoistway is provided. since was suspended the suspending pulley arranged on top of the counterweight, the amount of movement of the counterweight is about half the movement of the car, as a stator consisting of secondary conductor of this for a linear motor The length of the guide rails need only be set to about half the length of the car ascending / descending, which reduces the equipment cost and the amount of installation work and is extremely economical.

Claims (1)

[Claims] 1. A pulley device provided on an upper part of a hoistway, and a counterweight that moves up and down in the hoistway and a counterweight that keeps the car balance through the pulley device. In a linear motor drive type elevator device equipped with a guide rail as a linear motor stator that vertically guides a linear motor mover that constitutes the main part of the above, a rope on the counterweight side lower than the pulley device is an intermediate reversing part. It is equipped with a fixing part that is turned upside down and is fixed to the upper part of the hoistway, and the suspension wheel disposed on the top of the counterweight is suspended in the reversal part, whereby the amount of movement of the counterweight is changed by the amount of movement of the car. The linear motor drive type elevator device is characterized in that it is about half of the above.