JPH0543168A - Linear motor driven elevator - Google Patents

Abstract

(57) [Abstract] [Purpose] In an elevator driven by a linear motor, to reduce vibration when the primary winding contacts the secondary conductor. [Structure] Counterweight 8 and linear motor primary winding 1
3 is mounted, and the secondary conductor 10 is installed on the hoistway wall 1. The secondary conductor 10 is fastened with a bolt 23 between the guide rails 21 and 21 fixed to the bracket 11 via an elastic body 22. The elastic body 22 absorbs vibration when the primary winding 13 comes into contact with the secondary conductor 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator driven by a linear motor.

[0002]

2. Description of the Related Art FIG. 6 and FIG.
It is a figure which shows the conventional linear motor drive elevator shown by 1381, FIG. 6 is a hoistway longitudinal sectional view, FIG. 7 is a hoistway lateral sectional view.

In the figure, 1 is a hoistway wall, 2 is a hoistway,
3 is a car-side guide rail fixed to the hoistway wall 1, 4 is a car, 5 is a car-side guide shoe that is provided on the car 4 and guides the car 4 by engaging with the guide rail 3, and 6 is a guide rail 3. A brake for exerting a braking force between the two, 7 is a sheave provided on the upper part of the hoistway 2, 8 is a counterweight, 9 is wrapped around the sheave 7, and a car 4 and a counterweight 8 are respectively attached to the ends. Is the connected main rope.

Reference numeral 10 denotes a hoistway wall 1 via a bracket 11.
A secondary conductor of a linear motor that also serves as a weight-side guide rail fixed to the guide rail 12, a weight-side guide shoe 12 that is provided on the counterweight 8 and that engages with the tip of the secondary conductor 10 to guide the counterweight 8, Reference numeral 13 is a primary winding of a linear drive motor mounted on the counterweight 8 and facing the secondary conductor 10, and 14 is a moving cable suspended between the counterweight 8 and the hoistway wall 1.

The conventional linear motor driven elevator is constructed as described above, and when the primary winding 13 mounted on the counterweight 8 is excited, a relative thrust is generated between the secondary conductors 10, The counterweight 8 is driven, and the counterweight 8 moves up and down with the tip of the secondary conductor 10 guided by the guide shoe 12. The movement of this counterweight 8 is the main rope 9
Is transmitted to the car 4 through the, and the car 4 is guided by the guide shoes 5 along the guide rails 3 and moves up and down. At the time of stop or emergency stop, the brake 6 holds the guide rail 3 to hold the car 4.

[0006]

In the conventional linear motor drive elevator as described above, the counterweight 8 is guided by the secondary conductor 10 to move up and down. However, the secondary conductor 10 is a hoist type. Unlike the elevator guide rails, the rigidity is small, and the amount of protrusion from the hoistway wall 1 is long, so the rigidity becomes even smaller, and the counterweight 8 swings to fully exert its function as a guide rail. There is a problem that you cannot do it. Further, if the guiding function is insufficient, there is a problem that the secondary conductor 10 and the primary winding 13 come into contact with each other and the swing thereof is transmitted to the building.

The present invention has been made to solve the above-mentioned problems, and can secure a space between the secondary conductor and the primary winding,
Another object of the present invention is to provide a linear motor drive elevator that can alleviate vibration caused by contact between the primary winding and the secondary conductor.

[0008]

In a linear motor drive elevator according to a first aspect of the present invention, a guide rail is fixed to a hoistway wall, and a secondary conductor is held between the guide rail and an elastic body. It is a thing.

In the linear motor drive elevator according to the second aspect of the present invention, the elevator is provided with a restrictor that engages with the front edge portion of the secondary conductor and restricts the position of the secondary conductor.

[0010]

In the first aspect of the present invention, since the secondary conductor is sandwiched between the guide rails and the elastic body, the vibration when the primary winding contacts the secondary conductor is absorbed by the elastic body. .

Further, according to the second aspect of the invention, since the regulator which engages with the front edge of the secondary conductor is provided on the lifting body, the secondary conductor is displaced as the regulator moves.

[0012]

【Example】

Example 1. 1 to 4 are views showing an embodiment of the first and second inventions of the present invention, and FIG. 1 is a sectional view taken along line I-I of FIG.
2 is a front view of the counterweight portion, FIG. 3 is a side view of the restrictor portion, and FIG. 4 is a perspective view of the whole.

In the figure, reference numeral 21 is a guide rail made of a longitudinal member having an L-shaped cross section.
The secondary conductor 10 is inserted between the 1 and the elastic body 22 such as a rubber plate.
It is fastened with a bolt 23 through the guide rail 2
1 is fixed to the bracket 11 with a clip 24.
Reference numeral 25 is a frame body of the counterweight 8, the vertical frame 25a of which is formed in a U-shaped groove, and the primary winding 13 is supported inside thereof. 26 is fixed to the outside of the vertical frame 25a, and the primary winding 13
Is a rib arranged at the position of, and is provided with a hole 26a,
An electric wire 27 drawn from the primary winding 13 is inserted.

A plurality of 28 are laminated in a frame body 25 to form a vertical frame 2.
A weight body that engages with the outside of 5a, 29 is a roller guide that is mounted on the frame body 25 and has a roller that rolls on the guide rail 21 and guides the lifting and lowering of the counterweight 8, and 30 is the frame body 2
An arm 32 pivotally supported by a frame 31 fixed to a frame body 25 by a restrictor fixed to 5 and a roller 3 mounted on the tip of the arm 32 and rolling on the front edge of the secondary conductor 10.
3, a screw body 34 fixed to the arm 32, and a screw body 3
4 is a push spring 35 that is fitted to the screw 4 and biases the screw body 34 toward the secondary conductor 10. Reference numeral 36 is a brake shoe that is operated by the brake 6 installed below the counterweight 8.

The basic operation of the linear motor driven elevator constructed as described above is as described above. The counterweight 8 is guided by the roller guide 29 rolling on the guide rail 21. At the same time, the roller 33 of the restrictor 30 rolls while pressing the front edge of the secondary conductor 10 from both sides thereof with the force of the pressing spring 35. For this reason, the secondary conductor 10 is displaced, its position is regulated, a gap between the secondary conductor 10 and the primary conductor 13 is secured, and the primary conductor 1
3 is prevented from contacting the secondary conductor 10.

Further, since the secondary conductor 10 is sandwiched by the guide rails 21 via the elastic body 22, even if the primary winding 13 comes into contact with the secondary conductor 10, the vibration thereof is generated by the elastic body. It is absorbed at 22, and the vibration is reduced.

Embodiment 2. FIG. 5 is a cross-sectional view of a secondary conductor 10 showing another embodiment of the first invention of the present invention. A groove 39a is provided in the guide rail 39 along the longitudinal direction, and the secondary conductor 10 is provided in this groove 39a. Is inserted through the elastic body 22,
It is fastened with bolts 23. Its function is similar to that shown in FIG.

[0018]

As described above, in the first aspect of the present invention, the guide rail is fixed to the hoistway wall, and the secondary conductor is sandwiched between the guide rail and the elastic body. Vibration when contacting the secondary conductor is absorbed by the elastic body, and it is possible to prevent the transmission of vibration to the building and also to prevent a decrease in the coupling strength of the secondary conductor.

Further, according to the second aspect of the present invention, since the elevating body is provided with the restrictor which engages with the front edge portion of the secondary conductor and restricts the position of the secondary conductor, the restrictor moves along with the movement of the restrictor. As a result, the secondary conductor is displaced, a gap between the secondary conductor and the primary winding is secured, and it is possible to prevent the primary winding from contacting the secondary conductor.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention and is taken along the line II of FIG.
FIG.

FIG. 2 is a front view of a counterweight portion according to the first embodiment of the present invention.

FIG. 3 is a side view of the regulator portion of FIG.

FIG. 4 is an overall perspective view showing a first embodiment of the present invention.

FIG. 5 is a transverse sectional view of a secondary conductor portion showing another embodiment of the present invention.

FIG. 6 is a vertical cross-sectional view of a hoistway showing a conventional linear motor driven elevator.

7 is a cross-sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway wall 8 Elevating body (balanced weight) 10 Secondary conductor of linear motor 13 Primary winding of linear motor 21 Guide rail 22 Elastic body 30 Regulator 39 Guide rail

Claims (2)

[Claims] 1. An elevator in which a primary winding of a linear motor is mounted on an elevating body, and a flat secondary conductor is installed on the hoistway wall so as to face the primary winding. An elevator driven by a linear motor, characterized in that a guide rail for guiding the vehicle is fixed, and the secondary conductor is sandwiched by the guide rail via an elastic body. 2. An elevator in which a primary winding of a linear motor is mounted on a lifting body, and a flat plate-shaped secondary conductor is installed on a hoistway wall so as to face the primary winding, and the secondary conductor is mounted on the lifting body. A linear motor driven elevator characterized in that it is provided with a restrictor which engages with the front edge of the secondary conductor to restrict the position of the secondary conductor as the elevator moves up and down.