JP2862469B2 - Stator support device for linear motor - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supporting a columnar stator of a linear motor. 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 denotes a car which is disposed in a building so as to be able to move up and down. The car 101 is moved up and down by a linear motor 102 provided in the building. Linear motor 102
Is composed of a movable element 103 having a through-hole and a columnar stator 104 penetrating the through-hole. Mover 1
03 is connected to one end of a rope 105, 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
A magnetic force is generated between the movable member 4 and the mover 103, and the movable member 103
1 is moved up and down. [0003] However, in such a conventional linear motor, the columnar stator 104 has a problem in that the mover 103 moves up and down along the stator 104. Only these upper and lower ends are fixed to the building.
Supported, this intermediate part was not supported at all. For this reason, 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 for an elevator for a high-rise building. SUMMARY OF THE INVENTION An object of the present invention is to provide a linear motor stator support device in which a linear motor can be provided in an elevator for a skyscraper. According to the present invention, there is provided a column-shaped stator having upper and lower ends fixed and supported, and A mover relatively moved by magnetic force, a guide rail for guiding the mover along the stator, movably engaged with the guide rail to support the stator, and support the mover. A pair of upper and lower support means which are arranged at predetermined intervals on the upper and lower sides of the mover, a rope connecting the pair of upper and lower support means, and a guide between the pair of upper and lower support means. It has a configuration provided with a stopper provided on the rail. 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 up and down along the stator. For example, when the mover moves upward from the lower position, the mover comes into contact with the upper support means placed on the stopper and pushes it upward.
When the upper supporting means moves upward, the lower supporting means simultaneously moves upward 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. The present invention will be described below with reference to the drawings. FIGS. 1 to 7 show an embodiment of a linear motor stator supporting apparatus according to the present invention applied to a linear motor type elevator. In FIG. 7, reference numeral 1 denotes a car which is vertically movable within a hoistway 2 of a building. A pair of guide rails (not shown) are provided on both sides of the car 1 to guide the car vertically. (Not shown). A car frame 3 is attached to the car 1, and sheaves 5 and 6 attached to an overhead beam 4 are located above the car frame 3. Further, a linear motor 7 for moving the car 1 up and down is provided in the hoistway 2. The linear motor 7 includes a mover (primary conductor) 8 having a through hole,
A columnar stator (2) penetrating through the through hole of the mover 8
9). 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 fixed to the frame 8a of the mover 8, and the rope 10 is hung on sheaves 5 and 6, and the other end is fixed to the car frame frame 3. A counterweight 11 for keeping balance with the car 1 is attached to the frame 8a of the mover 8, and this counterweight 11 is set to a weight obtained by adding the weight of the car 1 and half of the rated load. . A pair of guide rails 12 and 13 (shown in FIG. 1) for vertically moving the mover 8 along the stator 9 are provided on both sides of the mover 8. As shown in FIG. 1, upper and lower support means 14 and 15 are arranged on the upper and lower sides of the mover 8 at predetermined intervals. 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 as shown in FIGS. Support pieces 1 are provided at both ends of the members 16 and 17.
8, 19 are erected. Roller guides 2 that engage with guide rails 12 and 13 are respectively provided on support pieces 18 and 19.
0 and 21 are attached. Further, support pieces 22 and 23 are attached between the frame members 16 and 17 so as to sandwich the stator 9 therebetween. The support pieces 2 and 23 and the frame members 16 and 17 are supported by the support rollers 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 comes into contact with stoppers 41, 42 provided substantially at the center of the guide rails 12, 13, and rests thereon. As described above, 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.
Supporting 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 support means 14 and the lower support 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 moves. On the other hand, buffer springs 39 and 40 are provided at the upper end of the counterweight 8a. The buffer springs 39 and 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, and
Moves up and down along the stator 9. For example, when the mover 8 moves upward from the lower position, as shown in FIG. 5, the mover 8 comes into contact with the upper support means 14 placed on the stoppers 41 and 42 and pushes up. When the upper support means 14 moves upward, the lower support means 15 also simultaneously moves upward 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
It is located approximately at the center of the camera and supports it. 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 at the same time. 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 substantially at the center of the stator 9 and supports the stator 9. As described above, according to the present invention,
Since the stator is supported by a pair of upper and lower support means arranged at predetermined intervals on the upper and lower ends of the mover,
The stator is supported not only between the upper and lower ends but also at the intermediate portion, and the length of the stator can be 30 m or more. Therefore, the linear motor using the stator support device can be used for an elevator of a high-rise building.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a linear motor stator support device according to the present invention. FIG. 2 is a plan view of the upper support means. FIG. 3 is a front view of the upper support means. FIG. 4 is a front view of the lower support means. FIG. 5 is a front view showing the operation of the stator support device. FIG. 6 is a front view showing the operation of the stator support device. FIG. 7 is a schematic diagram showing the entirety of a linear motor type elevator. FIG. 8 is a schematic view showing the whole of a conventional linear motor type elevator. [Description of References] 8 ... Movator 9 ... Stators 12 and 13 ... Guide rail 14 ... Upper support means 15 ... Lower support means 37 and 38 ... Rope 41 and 42 ... Stopper

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B66B 11/04 B66B 7/02 B66B 9/02

Claims (1)

(57) [Claims] A column-shaped stator having upper and lower ends fixed and supported, a mover relatively moved by a magnetic force with respect to the stator, and the mover along the stator. A guide rail to be guided, a pair of upper and lower support means movably engaged with the guide rail to support the stator, and arranged at predetermined intervals on upper and lower sides of the mover; A stator support device for a linear motor, comprising: a rope connecting upper and lower support means; and a stopper provided on a guide rail between the pair of upper and lower support means.