JPH06100269A - Linear motor for elevator - Google Patents

Abstract

PURPOSE:To facilitate the arrangement of fixing members by continuously providing plural fixing members each having the same height with the height of each floor and for fixing a linear motor, which elevates an elevator car with the elevation of a movable member through a suspending rope. CONSTITUTION:A liner motor 1 is vertically stood in a side part of a hoistway of an elevator of a multistory building. This linear motor 1 consists of a movable part 2, in which plural annular coils 3 coiled into the nearly square-shape and having straight parts 3a-3d are arranged on the same axial line, and plural continuously provided fixed members 5, which has the same height with the height of each floor and which consists of a secondary conductor 6 made of the cylindrical conductive material surrounding the movable part 2 and formed into the nearly square and a secondary iron core 7 fixed to the periphery of the secondary conductor 6. One end of a suspending rope 16, the other end of which is connected to the movable part 2, is passed through pulleys 17, 18, which are supported in the upper part of the hoistway freely to rotate, and connected to an elevator car 19, and the elevator car 19 is elevated with the elevation of the movable part 2 by the electrifying to the linear motor 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor used as a drive source for an elevator.

[0002]

2. Description of the Related Art In a conventional linear motor for driving an elevator, as shown in FIG. 5, a plurality of annular windings 30 are arranged on the same axis, and a primary side iron core 3 having comb-shaped winding grooves is provided.
1. A movable member 29 in which 1 is radially inserted and fixed from the outside of the annular winding, and a fixed member 32 in which a secondary side iron core 33 made of a magnetic material is covered with an aluminum conductor 34 inside the movable member 29. Then, attach a movable member to one end of the hanging rope,
The elevator car is attached to the other end, and the elevator car is moved up and down by the movement of the movable member.

[0003]

However, since the fixing members are fixed at the uppermost and lowermost portions of the building and not fixed on each floor, when the building becomes high-rise, the moving members may move. The fixing member vibrated and could not be applied to high-rise buildings. Further, there is a drawback that the equipment becomes large because the heat loss generated in the movable member and the fixed member is cooled.

[0004]

In order to solve the above problems, according to the present invention, an elevator linear motor in which an elevator car at one end and a linear motor at the other end are connected to each other via a suspension rope is provided in a substantially square shape. A movable member in which a linear portion of the annular winding is housed in a winding groove of a primary side iron core formed by laminating iron plates having comb-shaped winding grooves A secondary conductor facing the member,
This secondary conductor is equipped with a fixing member made of a cylindrical secondary-side iron core fixed to the outer periphery of the building and having the same height as the height of each floor of the building, and a flange is provided at the end of the fixing member. It is fixed on the floor surface of. A sliding member is provided on the side portion of the movable member so that the sliding member can travel on the inner peripheral surface of the fixed member. An air passage is formed between the primary side iron core of the movable member and the annular winding, and air above or below the movable member is circulated in the air passage when the movable member is moved up and down.

[0005]

Therefore, the fixed member can be firmly fixed to the floor surface of each floor of the building, and the movable member moves up and down while traveling on the inner peripheral surface of the fixed member, so that vibration does not occur. Further, when the movable member moves up and down, the air circulates through the ventilation path provided in the movable member, so that the movable member is efficiently cooled.

[0006]

EXAMPLES The present invention will be described below with reference to the examples shown in FIGS. Reference numeral 1 is a linear motor that is erected vertically on the side of an elevator car hoistway (not shown) of a high-rise building. Pulleys 17, 18 are attached to the upper part of the hoistway of the linear motor movable member. This rope has a hanging rope 1
6 is wound. A car 19 is connected to one end of the suspension rope 16, and a movable member described later is attached to the other end of the linear motor 1. The linear motor 1 is composed of a movable member 2 and a fixed member 5 as shown in FIG. The movable member 2 is wound in a substantially square shape, and the linear portions 3a, 3b, 3
An annular winding 3 having four c and 3d is provided, and a plurality of annular windings are arranged on the same axis. A primary side iron core 4 formed by stacking iron plates having comb-shaped winding grooves is provided, and the straight portions 3a, 3b, 3c, 3d of the annular winding 3 are housed in the winding grooves of the primary side iron core. There is. The movable member 2 is surrounded by a secondary conductor 6 made of a cylindrical conductive material formed in a substantially quadrangular shape, and a fixed member 5 having a secondary side iron core 7 fixed to the outer circumference of the secondary conductor. The height of the fixing member 5 is the same as the height of each floor of the building, and flanges 8 and 9 are provided at both ends thereof. One of the flanges 8 has a size that can be inserted through an insertion hole on the floor surface, and the floor surface 1 below
It is attached to the flange of another fixing member fixed to 0, and the other flange 9 is made larger than the insertion hole of the floor surface and is fixed to the floor surface 11. Reference numeral 12 denotes an air passage formed between the corner of the annular winding 3 of the movable member 2 and the primary side iron core 4, which penetrates from the upper side to the lower side of the movable member. Reference numeral 13 is an air passage formed between the outer circumference of the annular winding and the inner circumference of the fixing member.
The movable member penetrates from the upper side to the lower side. 14
Is a roller attached to the support arm 15 protruding from the end surface of the movable member 2 as shown in FIG. 3, and is configured to be able to travel on the inner peripheral surface of the fixed member 5. Reference numeral 20 is a lid attached to the floor surface at the lower end of the fixed member via a hinge, and is kept closed when the movable member is moved up and down. 21 is a power cable, 2
2 is a power supply. When the power source 22 is turned on to the linear motor 1 configured as described above, the annular winding 3 of the movable member 2 is excited, and the movable member 2 moves up and down by electromagnetic action with the secondary conductor 6 of the fixed member 5. By moving the movable member 2 up and down, the car 19 is integrally moved up and down via the suspension rope 16. In this case, the roller 14 provided on the side portion of the movable member 2 runs on the inner peripheral surface of the fixed member 5, so that the magnetic gap between the magnetic pole surface of the movable member 2 and the fixed member can be kept constant and smoothly. When the movable member can move up and down, the space between the lower side of the movable member and the lid 20 becomes a negative pressure, and the air above the movable member flows through the ventilation passages 12 and 13 of the movable member to the lower side of the movable member. To do. FIG. 4 shows another embodiment of the present invention.
The annular winding 24 of 3 has two linear portions 24a and 24b,
Each straight portion is housed in a winding groove provided on the primary side iron core 25. The fixed member 26 is a thin type in which a secondary side iron core 27 that surrounds the movable member 23 and is formed in a tubular shape, and a secondary conductor 28 that faces the straight line portion of the annular winding and is made of a conductive material are attached to the inner surface of the secondary side iron core. It is the one. In the figure, the height of one fixing member is the same as the height of the floor, but it is also possible to combine multiple fixing members so that they have the same height as the floor.
It may be fixed to the building in the middle of the floor. Further, although the roller is attached to the movable member, it may be attached to the fixed member and is not limited to the roller.

[0007]

As described above, according to the present invention, by simply adding a fixing member according to the number of floors of a building, it can be easily attached to a high-rise building without increasing the structure, and a movable member can be used. Since the sliding member is provided between the fixed members, the elevator car can be raised and lowered smoothly and with low noise.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an embodiment of the present invention.

FIG. 2 is a cross section of a linear motor of the present invention.

FIG. 3 is an enlarged view of a main part of the present invention.

FIG. 4 is a sectional view of a linear motor showing another embodiment of the present invention.

FIG. 5 is a sectional view of a conventional cylindrical linear motor.

[Explanation of symbols]

 1 Linear Motor 2 Movable Member 3 Annular Winding 4 Primary Side Iron Core 5 Fixed Member 6 Secondary Conductor 7 Secondary Side Iron Core 8 Flange 9 Flange 10 Floor Surface 11 Floor Surface 12 Ventilation Path 13 Ventilation Path 14 Roller

Continuation of the front page (72) Inventor Kazuki Ouchi 2-1, Kurosaki Shiroishi, Hachiman Nishi-ku, Kitakyushu City, Fukuoka Prefecture Yasukawa Electric Co., Ltd. Hachiman Factory

Claims (3)

[Claims] 1. A linear motor for an elevator, wherein an elevator car at one end and a linear motor at the other end are connected to each other via a suspension rope, and an annular winding wound in a substantially square shape is provided, and a comb tooth-shaped winding is provided. A movable member accommodating the linear portion of the annular winding in the winding groove of the primary side iron core formed by laminating iron plates having grooves, and a secondary conductor facing the linear portion of the annular winding of the movable member are provided. This secondary conductor is equipped with a fixing member made of a cylindrical secondary-side iron core fixed to the outer periphery of the building and having the same height as the height of each floor of the building, and a flange is provided at the end of the fixing member. A linear motor for elevators, characterized in that it is fixed to the floor surface of. 2. The elevator according to claim 1, wherein a sliding member is provided on a side portion of the movable member so that the sliding member can travel on the inner peripheral surface of the fixed member. Linear motor. 3. An air passage is formed between the primary side iron core of the movable member and the annular winding so that air above or below the movable member is passed through the air passage when the movable member is moved up and down. The linear motor for an elevator according to claim 1 or claim 2.