JPH07117956A - Stator supporting device for linear motor - Google Patents

Abstract

PURPOSE: To make a long stator usable by supporting the stator by a pair of upper and lower support means disposed with a specified space at both upper and lower ends of a movable element, thereby supporting the intermediate part of the stator as well as both upper and lower ends thereof. CONSTITUTION: A linear motor 7 for vertically moving a car in a hoistway comprises a movable element (a primary side conductor) 8 with a through hole, and a column-like stator (a secondary side conductor) 9 piercing the through hole of the movable element 8. Upper and lower support means 14, 15 are disposed with a specified space on both upper and lower sides of the movable element 8. The upper support means 14 has a pair of frame members 16, 17 disposed parallel in the form of holding the stator 9 between the guide rails 12, 13, and both ends thereof are connected by support pieces 18, 19. Roller guides 20, 21 engaged with the guide rails 12, 13 are fitted to the respective support pieces 18, 19, and support pieces 22, 23 are fitted between the frame members 16, 17 so as to hold the stator 9 therebetween.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a columnar stator of a linear motor.

[0002]

2. Description of the Related Art Conventionally, there is a linear motor type elevator using a linear motor. As such a linear motor type elevator, for example, there is one shown in FIG. In the figure, reference numeral 101 is a car arranged so as to be movable up and down in the building, and the car 101 is for carrying people, luggage, etc. and moving it to the upper and lower floors of the building. The car 101 is moved up and down by a linear motor 102 provided in the building. Linear motor 102
Is composed of a mover 103 having a through hole and a column-shaped stator 104 penetrating the through hole. Mover 1
One end of a rope 105 is connected to 03, and the other end is connected to the car 101 via a sheave 106. When a drive current is supplied to the linear motor 102, the stator 10
4 creates a magnetic force between the mover 103 and the mover 103, and the mover 103 moves up and down with respect to the stator 104.
1 is moved up and down.

[0003]

However, in such a conventional linear motor as described above, the column-shaped stator 104 has the vertical direction because the movable element 103 moves up and down along the stator 104. Only both ends are fixed to the building
Supported, this midsection was unsupported. Therefore, the length of the stator 104 is at most about 30 m in terms of strength, and there is a problem that such a linear motor cannot be used in an elevator for a skyscraper.

It is an object of the present invention to provide a linear motor stator support device in which a linear motor can be installed in an elevator for a skyscraper.

[0005]

In order to achieve such an object, according to the present invention, a column-shaped stator having both upper and lower ends fixed and supported, and a relative magnetic force with respect to the stator. A movable element, a guide rail that guides the movable element along the stator, a movably engaged with the guide rail to support the stator, and support the movable element, and Provided on a guide rail between the pair of upper and lower support means, a pair of upper and lower support means arranged on both upper and lower sides of the mover and separated by a predetermined distance, a rope connecting the pair of upper and lower support means. And a stopper that is provided.

[0006]

When a drive current is supplied to the linear motor, a magnetic force is generated between the stator and the mover, and the mover moves vertically along the stator. For example, when the mover moves upward from the lower position, the mover comes into contact with the upper support means mounted on the stopper and pushes it upward.
When the upper support means moves upward, the lower support means also moves upward simultaneously via the rope. When the upper support means is moving upward, the upper and lower support means are located in the middle of the stator and support the stator. When the upper support means is located above, the lower support means is located substantially at the center of the stator and supports it.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 7 are diagrams in which an embodiment of a linear motor stator supporting device according to the present invention is applied to a linear motor elevator.

In FIG. 7, reference numeral 1 denotes a car which is vertically movable in a hoistway 2 of a building, and a pair of guide rails (on both sides of the car 1 for guiding the car vertically). (Not shown) is provided. A car frame 3 is attached to the car 1, and sheaves 5 and 6 attached to the overhead beam 4 are located above the car frame 3.

A linear motor 7 for vertically moving the car 1 is arranged in the hoistway 2. This linear motor 7 has a mover (primary conductor) 8 having a through hole,
A column-shaped stator (2
Secondary conductor) 9. The upper and lower ends of the stator 9 are fixed to the overhead beam 4 and the floor surface 2a.

One end of a rope 10 is fastened to the frame 8a of the mover 8, the rope 10 is hooked on sheaves 5 and 6, and the other end is fastened to the car frame 3. A counterweight 11 for maintaining balance with the car 1 is attached to the frame 8a of the mover 8, and the counterweight 11 is set to the total weight of the car 1 and half the rated load. . Further, a pair of guide rails 12 and 13 (shown in FIG. 1) for vertically moving the mover 8 along the stator 9 are provided upright on both sides of the mover 8.

As shown in FIG. 1, upper and lower support means 14 and 15 are arranged on both upper and lower sides of the mover 8 at predetermined intervals. As shown in FIGS. 2 and 3, the upper support means 14 has a pair of frame members 16 and 17 arranged in parallel so as to sandwich the stator 9 between the guide rails 12 and 13. Support pieces 1 are provided on both ends of the members 16 and 17.
8 and 19 are erected. The support pieces 18 and 19 have roller guides 2 that engage with the guide rails 12 and 13, respectively.
0 and 21 are attached.

Support pieces 22 and 23 are attached between the frame members 16 and 17 so as to sandwich the stator 9. The support pieces 22 and 23 and the frame members 16 and 17 are provided on the support roller 2 so as to surround the stator 9 from all sides.
4, 25, 26 and 27 are attached, and the support rollers 24, 25, 26 and 27 are in contact with the stator 9. The upper support member 14 abuts on stoppers 41 and 42 provided at substantially the center of the guide rails 12 and 13 and is placed thereon. In this way, the upper support means 14 supports the stator 9 while being supported by the guide rails 12 and 13 by the roller guides 20 and 21 so as to be vertically movable.

The upper support means 14 is located above the mover 8 and the lower support means 15 is located below the mover 8. The lower support means 15 is also configured similarly to the upper support means 14 as shown in FIG.
Support pieces 29, 30, 31, 32, roller guides 33, 3
4 and support rollers 35 and 36.

Both ends of a pair of ropes 37, 38 are fixed to the support pieces 18, 19 of the upper support means 14 and the support pieces 29, 30 of the lower support means 15, respectively.
Reference numerals 7 and 38 connect the upper supporting means 14 and the lower supporting means 15 while separating them by a predetermined distance. Therefore, when the upper support means 14 is moved upward, the lower support means 15 is pulled upward via the ropes 37 and 38 and moved.

On the other hand, buffer springs 39, 40 are provided at the upper end of the counterweight 8a. The buffer springs 39, 40 absorb the impact when the counterweight 11 contacts the upper support means 14. belongs to.

When a drive current is supplied to the linear motor 7, a magnetic force is generated between the stator 9 and the mover 8 to cause the mover 8 to move.
Moves vertically along the stator 9. For example, when the mover 8 moves upward from the lower position, as shown in FIG. 5, the mover 8 contacts the upper support means 14 mounted on the stoppers 41 and 42 and pushes the mover 8 upward. When the upper support means 14 moves upward, the lower support means 15 also moves upward simultaneously via the ropes 37 and 38. When the upper support means 14 and 15 are moving upward, the upper and lower support means 14 and 15 are located in the middle of the stator 9 and support the stator 9. As shown in FIG. 6, when the upper support means 14 is located above, the lower support means 15 moves toward the stator 9
It is located approximately in the center of and supports this.

Next, when the mover 8 moves downward from the upper position, the upper support member 14 and the lower support means 15 which are in contact with the mover 8 also move downward simultaneously. When the upper support means 14 comes into contact with the stoppers 41 and 42 and is stopped, the upper support means 14 is located at substantially the center of the stator 9 and supports the stator 9.

[0018]

As described above, according to the present invention,
Since the stator is supported by a pair of upper and lower support means which are arranged at a predetermined interval on the upper and lower ends of the mover,
This stator supports not only the upper and lower ends but also the intermediate portion, and the length of the stator can be 30 m or more. Therefore, the linear motor using this stator support device can also be used for an elevator in a high-rise building.

[Brief description of drawings]

FIG. 1 is a front view of a stator support device for a linear motor according to the present invention.

FIG. 2 is a plan view of an upper support means.

FIG. 3 is a front view of an upper support means.

FIG. 4 is a front view of a lower support means.

FIG. 5 is a front view showing the operation of this stator support device.

FIG. 6 is a front view showing the operation of this stator support device.

FIG. 7 is a schematic diagram showing an entire linear motor type elevator.

FIG. 8 is a schematic diagram showing an entire conventional linear motor type elevator.

[Explanation of symbols]

 8 ... Mover 9 ... Stator 12, 13 ... Guide rail 14 ... Upper support means 15 ... Lower support means 37, 38 ... Rope 41, 42 ... Stopper

Claims (1)

[Claims] A column-shaped stator whose upper and lower ends are fixed and supported, a mover that moves relative to this stator by magnetic force, a guide rail that guides this mover along the stator, and this guide rail A pair of upper and lower support means which are movably engaged with each other to support the stator, and which are arranged on both upper and lower sides of the mover with a predetermined space therebetween, and a rope which connects the pair of upper and lower support means. And a stopper provided on the guide rail between the pair of upper and lower supporting means, the stator supporting device of the linear motor.