JPH07144851A - Linear motor type elevator - Google Patents

Abstract

PURPOSE: To make an elevator applicable to a super high-rise building while dispensing with a counterweight and its rope by driving a car directly by a number of movable elements in a linear motor through a rope, and spacing the lowermost movable element to further drive the car. CONSTITUTION: A car 2 is elevatingly disposed inside a hoistway 1, and a column-like stator 11 is erected in the hoistway 1. A linear motor 6 comprising a number of movable elements 7-10 elevated by magnetic force is slidably mounted to the stator 11. The uppermost movable element 7 is additionaly provided with a sheave 22, and both ends of a rope 1 hung from the sheave 22 are fastened to the car 2 and the lowermost movable element 10. The car 2 is driven directly by the respective movable elements 7-10 through the rope 18. The lowermost movable element 10 is spaced from the upper movable elements 7-9 to further drive the car 2, that is, the lowermost movable element 10 is lowered to pull up the car 2 by the rope 18 to reach the uppermost floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor type elevator for moving a car up and down by a linear motor.

[0002]

2. Description of the Related Art As a conventional linear motor type elevator, for example, there is one shown in FIG. In the figure, reference numeral 101 is a car arranged vertically movable in the building, and a counterweight 103 for balancing the car 101 is also arranged. The car 101 is moved up and down by a linear motor 102 provided in the building. The linear motor 102 has a through hole, and is a mover 103 integrally attached to the counterweight 103.
And a column-shaped stator 104 penetrating the through hole. One end of the rope 105 is fixed to the mover 103, and the other end is fixed to the car 101 via the sheave 106.
Is fastened to. When the drive current is supplied to the linear motor 102, a magnetic force is generated between the stator 104 and the mover 103, and the mover 103 moves up and down with respect to the stator 104, thereby driving the car 101.

[0003]

By the way, such a conventional linear motor type elevator has a height of 1,000 m.
If it is installed in an ultra-high-rise building exceeding 100, the ascending / descending stroke becomes large, and the weight ratio of the rope 105 to the total suspension load becomes high. For this reason, as long as the existing rope is used, there will be a limit to the up-and-down stroke as long as the law that defines a safety factor of 10 times the rope breaking strength or more is satisfied. It will not be possible. Therefore, there is a demand for a linear motor type elevator that does not need to use the rope 105 having both ends fixed to the counterweight 103 and the car 101.

It is an object of the present invention to provide a linear motor type elevator which can be installed in an ultra-high-rise building without using a rope having both ends fastened to a counterweight and a car. .

[0005]

In order to achieve such an object, according to the present invention, a basket arranged vertically movable in a hoistway and a column-shaped standing upright in the hoistway. And a linear motor composed of a plurality of movers that are slidably attached to the stator and move up and down by magnetic force; a sheave provided on the uppermost mover among the plurality of movers; It is equipped with a rope that is hung on a sheave and has both ends fastened to the car and the mover at the bottom, respectively, and the car is directly driven by the plurality of movers through this rope, and the mover at the bottom is The car is further driven by moving the car closer to and away from the upper mover.

[0006]

[Operation] When the car is on the lowest floor, the mover at the bottom and the other movers are in a continuous state, and the car is hung from the mover at the bottom through the sheave. It is in a position facing the mover. When the drive current is supplied to the linear motor, a magnetic force is generated between the stator and the plurality of movers, and the mover moves upward. At this time, since the car is suspended by the lowermost mover, all the movers directly drive the car upward (without using the counterweight as in the conventional case).

Next, when the car is driven upward by all the movers, this car is at a position facing the mover at the bottom stage, so that the movers above this move in the way and arrive at the top floor. Can not do it. Therefore, the bottom mover,
It is driven downward so as to be separated from the mover above this. The car is pulled upwards by the mover at the lowest stage via the rope and reaches the top floor.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 4 are views showing an embodiment of a linear motor type elevator according to the present invention.

In FIG. 1, reference numeral 1 indicates a height of 1,000 m.
It is a hoistway of an elevator installed in a super-high-rise building, etc., in which a car 2 is vertically movable. The car 2 is provided with a car frame 3 as shown in FIG. 2, and guide shoes 4 attached to the car frame 3 are engaged with guide rails 5 standing on both sides of the car 1.

The car 2 is moved up and down by a linear motor 6. The linear motor 6 is a primary side conductor and is composed of a plurality of movers 7, 8, 9, 10 and a stator 11 of a secondary side conductor. Has been done. The stator 11 has a columnar shape, and the upper and lower ends of the stator 11 are overhead beams 1 respectively.
2 and the pit chamber 13 are fixed.

As shown in FIG. 3, a plurality of movers 7 ... 10 are slidably attached to the stator 11, and the movers 7 ... 10 have a substantially cylindrical shape. The stator 11 is inserted through the through holes 7a. The plurality of movers 7 ... 10 are vertically attached to the centers of frames 14 ... 17 each having a substantially rectangular shape, and the frames 14 ... 16 other than the lowermost frame 17 are fixed to each other by welding. Has been done.

A mounting piece 17a is formed at the upper end of the lowermost frame 17, and one end of a plurality of ropes 18 and 19 is fixed to the mounting piece 17a. The ropes 18 and 19 are hung on a pair of sheaves 20 and 21 provided on the upper end of the uppermost frame 14, and then fixed to the upper end of the car frame 14.

The pair of sheaves 20 and 21 is the stator 1.
1, which are located on both sides of the frame 1, and are rotatably supported by support pieces 22 and 23 attached to the upper end of the frame 14. The ropes 18 and 19 have a constant length regardless of the length of the hoistway 1, and the weight of the ropes 18 and 19 does not affect the total suspension load.

On both sides of the plurality of frames 14, ...
A pair of guide shoes 24, 27 and 28, respectively.
31 is attached, and this guide shoe 24 is 27
And 28 ... 31 are engaged with a pair of guide rails 32 and 33 which are erected on both sides of the frames 14 to 17, respectively, and the mover 7 ...
It is guided by 33 and moves up and down. The upper and lower ends of the guide rails 32 and 33 are similarly fixed to the overhead beam 12 and the pit chamber 13.

As shown in FIG. 1, when the car 2 is in the lowermost stage 34, the lowermost movable element 10 and the other movable elements 7 are provided.
... 9 is continuous, and basket 2 is sheave 2.
It is hung from the lowermost mover 10 via the Nos. 2 and 23 and is in a position facing the mover 10. When the drive current is supplied to the linear motor 6, the stator 11 and the mover 7
A magnetic force is generated between the moving elements 7 and 10 and the moving elements 7 and 10 move upward. At this time, since the car 2 is suspended by the mover 10, it is directly driven upward (without using a counterweight as in the conventional case) by the movers 7 ...

By the way, since the car is conventionally balanced with the counterweight, the thrust of the linear motor (movable element) for moving the car up and down can be small. However, in the present invention, since the counterweight is not used, the thrust force is insufficient with one mover, and for this reason, a large number of movers 7 ... 10 drive one car 2 in the vertical direction. I am trying to let you. When a single car 2 is driven by a large number of movers 7 ... 10 in this way, the car 2 can be easily moved in the vertical direction.

Next, when the car 2 is driven upward by a large number of movers 7 ... 10 As shown in FIG. 4, this car 2 is in a position facing the mover 10 at the bottom stage. The upper movers 7 ... 9 get in the way and cannot reach the top floor 35. Therefore, the mover 10 at the bottom stage
Is driven downward so as to be separated from the movers 7 ... 9 above this. The car 2 is pulled upward by the lowermost mover 10 via the ropes 22 and 23 and reaches the uppermost floor 35. In addition, in order to move the car 2 on the top floor 35 downward, the procedure is reversed.

On the other hand, if only one car is installed in one hoistway provided in a super high-rise building, the waiting time of the car on each floor becomes very long. Therefore, if a plurality of cars can be arranged in one hoistway, the waiting time can be shortened. In the present invention, since the cars 2 are directly driven by the movers 7 ... 10, it is possible to dispose a plurality of cars 2 in one hoistway 1.

In the above embodiment, the case where the elevator is installed in an ultra-high-rise building has been described, but the elevator is not limited to this and may be installed in a building having an average height.

[0020]

As described above, according to the present invention,
Since the car is driven directly by a plurality of movers via the rope, and the car is further driven by moving the lowest mover above and below the mover, the counterweight is the same as in the past. Since it is not used, it is not necessary to use a rope that affects the total suspension load, and this elevator can be installed in an ultra-high-rise building. Since a plurality of movers are used to drive the car, the thrust of the mover that drives the car does not become insufficient.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a linear motor type elevator according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a view on arrow B in FIG.

FIG. 4 is a front view showing the operation of this elevator.

[Fig. 5] Front view of a conventional linear elevator

[Explanation of symbols]

 1 ... Hoistway 2 ... Car 6 ... Linear motor 7 ... 10 ... Mover 11 ... Stator 18, 19 ... Rope 22, 23 ... Sheave

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shoji Hongo 3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa Nihon Otis Elevator Co., Ltd.

Claims (1)

[Claims] 1. A basket-shaped stator vertically installed in the hoistway, and a plurality of column-shaped stators installed upright in the hoistway and slidably attached to the stator and vertically moved by magnetic force. A linear motor composed of a mover, and a sheave provided on the uppermost mover among the plurality of movers,
It is equipped with a rope that is hung on this sheave and has both ends fixed to the car and the lowermost mover, and the car is directly driven by the plurality of movers via this rope, and the lowermost mover is A linear motor type elevator characterized in that the car is further driven by moving it away from and above the mover.