JPH07157238A - Linear motor elevator - Google Patents

Abstract

PURPOSE:To attain fixedly holding a space between a cylindrical pillar and a stator by providing a cylindrical sliding member for guiding the cylindrical pillar, serving as the secondary side of a linear motor, slid in a cage or balance weight provided with a stator serving as the primary side of the linear motor. CONSTITUTION:In a balance weight of a linear motor elevator, a stator (primary coil) 7 serving as the primary side of a linear motor is arranged in the central part of an outer frame 17 through a bracket 18, but a cylindrical sliding member 20 is provided in both upper/lower end parts of this stator 7. This sliding member 20 is constituted of a cylindrical case 21, panel 22 provided along the circumference of this case 21 to be mountable/demountable independently of the case 21 and a heat resistant friction material 24 elastically supported to the inside of the panel 22 through an energizing spring 23, and the friction material 24 is brought into contact with a surface of a cylindrical pillar 8, serving as the secondary side of the linear motor, and slid according to lifting the balance weight 2. In this way, a space between the cylindrical pillar 8 and the stator 7 is always stably fixedly held.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor elevator which uses a linear motor to elevate a counterweight or a car.

[0002]

2. Description of the Related Art In an area where the height of a building is limited due to the problem of sunshine, etc., when installing an elevator, it may not be possible to install a machine room, that is, a penthouse directly above the hoistway. More hydraulic elevators have been used that allow machine rooms to be installed freely. Further, in recent years, a linear motor elevator that does not require a penthouse, consumes less power than a hydraulic elevator, has low noise, and has a large up / down stroke and a large rated speed has been applied. A conventional configuration of a linear motor elevator and its technology will be described below with reference to the drawings.

In FIGS. 4 and 5, a conventional linear motor elevator is a slippery type composed of a car 1 on which a person or luggage is placed, a main rope 3 fastened to a car 1 at one end, and a counterweight 2 at the other end. It is designed to run in the hoistway 4. Further, a sheave 5 around which the main rope 3 is wound, a beam 6 for installing the sheave 5 is provided above the hoistway 4, and a counterweight 2 is provided with a stator 7 on the primary side of a linear motor which is a drive source. ing. A cylindrical column 8 that is the secondary side of the linear motor inserted inside the stator 7 is installed above and below the hoistway 4. The upper end of the cylindrical column 8 is fixed to the beam 9 and the mounting plate 10 provided on the upper part of the hoistway 4 with bolts, and the lower end thereof is fixed to the bracket 11 provided on the lower part of the hoistway 4 to form the cylindrical column 8 The hoistway 4 via a spring 12 and a screw rod 13 for applying tension to the wire to prevent buckling.
It is installed by a base 14 fixed to the bottom. Further, the car 1 and the counterweight 2 are guided by the guide rails 15 and 16, respectively, and the guide rails 15 and 16 are connected to the hoistway 4 respectively.
It is installed from the bottom to the top.

FIG. 6 shows the structure of the counterweight 2. The counterweight 2 has a stator 7 attached to the center of an outer frame 17 via a bracket 18 as the primary side of the linear motor. In the stator 7, four guide rollers 19 are provided at the upper and lower ends at equal intervals of 90 ° in order to maintain a predetermined gap with the cylindrical column 8 which is the secondary side of the linear motor. It is provided. The guide roller 19 abuts the cylindrical column 8 to guide the lifting and lowering of the counterweight 2, and keeps a constant gap between the stator 7 and the cylindrical column 8 to provide a stable thrust (driving force).
Is being obtained.

[0005]

However, in the conventional linear motor elevator, since the contact surface between the guide roller 19 and the cylindrical column 8 is small, when the counterweight 2 oscillates, the contact surface is extremely localized. A strong load may be applied. In such a case, the surface of the cylindrical column 8 is distorted, and in the worst case, deformation occurs, so that the gap between the stator 7 and the cylindrical column 8 cannot be kept constant, and it is stable. The problem arises that thrust cannot be obtained. Also, a counterweight 2
Alternatively, when the car 1 moves up and down the hoistway, dust, dust, and the like may adhere to the cylindrical column 8 and damage the cylindrical column 8 due to the rolling of the guide rollers 19.

Therefore, an object of the present invention is to maintain a constant gap between the secondary conductor and the primary coil without causing distortion or scratches on the surface of the cylindrical column which is the secondary conductor of the linear motor. To provide a linear motor elevator.

[0007]

In order to achieve the above object, the present invention provides a stator, which is a primary coil of a linear motor provided on either a car or a counterweight, and is inserted into the inside of the stator. And a cylindrical column that serves as a secondary conductor of a linear motor that extends vertically above and below the hoistway, and the thrust generated between the stator and the cylindrical column balances the cage and the weight in the hoistway. Provided is a linear motor elevator that vertically moves up and down, in which a cage or a counterweight provided with the stator includes a cylindrical sliding member that slides and guides the cylindrical column.

[0008]

In the present invention, with the above construction, the cylindrical column serving as the secondary conductor of the linear motor is slidably guided by the cylindrical sliding member provided on the cage or the counterweight provided with the stator.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a configuration of a counterweight of a linear motor elevator according to the present invention, in which a stator 7 serving as a primary coil of a linear motor is arranged in a central portion of an outer frame 17 via a bracket 18 as in the conventional case. There is. A cylindrical sliding member is provided at both upper and lower ends of the stator 7.
20 is provided, and the sliding member 20 is provided with a heat-resistant friction material that comes into contact with the surface of the cylindrical column 8, and this friction material comes into contact with the cylindrical column 8 so that the counterweight 2 moves up and down. It is designed to slide.

FIG. 2 is a top view and a side view showing the structure of the sliding member 20. As shown in FIG. 2, the sliding member 20 is provided along a cylindrical case 21 and the circumference of the case 21,
A panel 22 that is detachable independently of the case 21, a biasing spring 23 (elastic body) provided inside the panel 22 (center side of the case 21), and a friction material 24 elastically supported by the biasing spring 23. The heat resistant member 24a is attached to the sliding portion of the friction material 24 with the cylindrical column 8. Panel 22 is shown in FIG.
As shown in (b), the case 21 is vertically and doubly attached to the side surface, and the upper and lower panels 22 are attached in a staggered manner. Further, the panel 22 is screwed to the case 21 by a screw 25, and the inside of the panel 22 is outside the friction material 24 (panel
There are two stoppers 26 that restrict the movement toward the (22 side).

In the counterweight of the linear motor constructed as described above, first, when the counterweight 2 moves up and down, the cylindrical column 8 serving as a secondary conductor is provided with sliding members provided at both upper and lower ends of the stator 7. The 20 slides and the counterweight 2 is guided. At this time, since the friction material 24 provided on the sliding member 20 is urged by the urging spring 23, the friction material 24 comes into contact with the cylindrical column 8 to keep the gap between the stator 7 and the cylindrical column 8 constant. I am supposed to keep it. In addition, the guide rail 16 is used for overall support and guidance of the counterweight 2. Further, when the counterweight 2 swings and the stator 7 swings accordingly, the stopper 26 provided on the anti-sliding surface side of the friction material 24 causes the stator 7 to swing.
The swinging of the stator 7
The gap between the cylinder column 8 and the cylindrical column 8 can be suppressed within an allowable range that does not affect the thrust.

As described above, according to this embodiment, since the cylindrical pillar 8 is slidably guided by the cylindrical sliding member 20 provided on the stator 7, the contact surface (sliding surface) between the cylindrical pillar 8 and the sliding member 20 (sliding member) is slidably guided. Therefore, even if the counterweight 2 swings, no extreme load is applied and dust and the like attached to the cylindrical column 8 are removed by the sliding member 20. Therefore, the surface of the cylindrical column 8 can be always kept clean. As a result, it is possible to prevent the surface of the cylindrical column 8 from being distorted or damaged. In this embodiment, the sliding members 20 are provided at both upper and lower end portions of the stator 7, but as shown in FIG. 3, they are provided at the upper and lower end portions of the outer frame 17 to guide the cylindrical column 8. You can Further, in this embodiment, the counterweight 2 is equipped with the stator 7 which is a primary coil, and the car 1 is moved up and down by raising and lowering the counterweight 2. However, the stator 7 is provided on the car 1 and the stator 7 is provided. On sliding member 20
It is of course possible to drive the car 1 itself by raising and lowering.

[0013]

As described above, according to the present invention, the surface of the cylindrical column serving as the secondary conductor of the linear motor for driving the counterweight or the car is not distorted or damaged, and the secondary conductor and the primary coil are not generated. Since the gap between and can be kept constant, it is possible to provide a linear motor elevator that can always run stably.

[Brief description of drawings]

FIG. 1 is a side view of a counterweight of a linear motor elevator according to the present invention.

FIG. 2 is a top view and a side view of a sliding member of a linear motor elevator according to the present invention.

FIG. 3 is a side view of the counterweight of the linear motor elevator of the present invention.

FIG. 4 is an overall configuration diagram of a conventional linear motor elevator.

FIG. 5 is an overall configuration diagram of a conventional linear motor elevator.

FIG. 6 is a side view of the counterweight of the linear motor elevator of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Basket, 2 ... Counterweight, 4 ... Hoistway, 7 ... Stator, 8 ... Cylindrical pillar, 20 ... Sliding member, 21 ... Case, 22 ...
Panel, 23 ... biasing spring (elastic body), 24 ... friction material.

Claims (4)

[Claims] 1. A stator, which is a primary coil of a linear motor provided on either a car or a counterweight, and a secondary conductor of the linear motor, which is inserted into the stator and extends above and below a hoistway. In a linear motor elevator having a cylindrical pillar, and a weight and a counterweight in a hoistway that are lifted in a slipping manner in a hoistway by a thrust generated between the stator and the cylindrical pillar, a cage or a counterweight provided with the stator. A linear motor elevator, further comprising a cylindrical sliding member for slidingly guiding the cylindrical column. 2. A stator, which is a primary coil of a linear motor provided on either a car or a counterweight, and a secondary conductor of the linear motor which is inserted into the stator and extends above and below the hoistway. In a linear motor elevator that has a cylindrical column, and in which a thrust is generated between the stator and the cylindrical column, the cage and the weight are balanced in a hoistway and the weight and the weight vertically move in a sliding manner, and the cylindrical column slides on the stator. A linear motor elevator having a cylindrical sliding member for guiding. 3. The linear motor elevator according to claim 1, wherein the sliding member is made of a heat-resistant friction material that comes into pressure contact with the cylindrical column. 4. The sliding member includes a cylindrical case, a detachable panel provided along the outer periphery of the case, an elastic body provided inside the panel, and elastically supported by the elastic body. The linear motor elevator according to claim 1, wherein the linear motor elevator is made of a friction material that is pressed against the cylindrical column.