JPH07300286A - Linear motor elevator - Google Patents

Abstract

(57) [Summary] [PROBLEMS] An object of the present invention is to provide a linear motor elevator capable of reducing the size and weight of a linear motor serving as a drive source, ensuring rigidity, and further enhancing a cooling effect. Especially. According to the present invention, by controlling the energization of the cylindrical coil 16 of the primary conductor 7, a thrust force is generated between the primary conductor 7 and the secondary conductor 8 so that the car and the counterweight are relatively moved up and down via a suspension rope. During this ascending / descending operation, the blower plate 17 blows traveling wind to the cylindrical coil 16 to dissipate the heat generated by the cylindrical coil 16, and the blower plate 17 connects the divided iron cores 15 to each other. Securing rigidity.

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 using a linear motor as a drive source.

[0002]

2. Description of the Related Art Conventionally, in an area where the height of a building is restricted due to the problem of sunshine, etc., when installing an elevator, it may not be possible to install a machine room right above the hoistway, that is, a penthouse on the roof of the building. is there. For this reason, hydraulic elevators that can freely install a machine room in the lower part of the hoistway have been widely used, but in recent years, a penthouse is not required, power consumption is lower than that of a hydraulic elevator, and noise is low, and the elevator process Therefore, the adoption of a linear motor elevator that can achieve a large rated speed is being considered.

This linear motor elevator is shown in FIG. 9 (a).
Briefly explaining with (b), a pair of sheaves 3, 3 are rotatably attached to the upper part of the elevator hoistway 1 of the building via a beam 2, and a suspending rope 4 is wound around them to elevate both ends thereof. A car 5 for hanging a person or luggage on one end of the suspension rope 4 and a counterweight 6 is fastened to the other end of the suspension rope 4, and both of them are connected to a guide rail (not shown) through the suspension rope 4. It is hung vertically so that it can be raised and lowered.

A primary conductor (coil) 7 of a cylindrical linear motor for generating a magnetic field is attached to the balance weight 6 as a source for raising and lowering the same, and the primary conductor 7 of the cylindrical linear motor is also mounted. In the hoistway 1 in the state of penetrating inside, a columnar secondary conductor 8 of a linear motor extending vertically is provided.

The secondary conductor 8 of this cylindrical linear motor
Is a long cylinder made of iron, aluminum, or a composite material made of iron and having a length of about 1 to 5 meters. By fixing the beam 9 and the mounting plate 10 provided on the upper part of the hoistway 1 by welding or the like, the hoistway 1
It is installed so as to hang down inside, and a bracket 11 is welded and fixed to the lower end of the bracket 11, and the bracket 11 is slidably fitted to a plurality of screw rods 13 standing upright in the lower part of the hoistway 1 via a base 12 and a spring. By pressing it from above by 14, it is fixed vertically with tension applied so as not to cause buckling as a whole.

In the linear motor elevator having such a structure, the car 5 and the counterweight 6 are relatively moved via the suspension rope 4 by the thrust generated between the primary conductor 7 and the secondary conductor 8 by controlling the energization of the primary conductor 7. It will come up and down. In addition, the primary conductor 7 and the secondary conductor 8 of the linear motor as the above-mentioned lifting drive source are not on the side of the counterweight 6 but on the car 5
It may be provided on the side. In such a linear motor elevator, the amount of heat generated from the primary conductor (coil) 7 is a serious problem, and therefore, for example, as shown in FIG.
As disclosed in FIG. 3 and FIG. 3, it has been considered that cooling fins are arranged in the coil unit functioning as the primary side mover to dissipate heat generated in the coil unit. Also, in FIG. 4, the periphery of the cover member is surrounded by a tubular baffle plate, and the upper and lower ends of the baffle plate are expanded into a trumpet shape to forcibly blow the traveling wind on the surface of the cover member. It is also considered to make it cool.

[0007]

However, in the linear motor used in the conventional linear motor elevator, the weight of the primary conductor (coil) 7 is considerably large,
It requires a large amount of electricity. Therefore, the amount of heat generation also increases in proportion to the amount of electricity supplied. Therefore, a large baffle plate that covers the cooling fins or the cover member of the coil unit as described above increases the weight of the linear motor itself, increasing the amount of heat generation and increasing the size of the device itself. Occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a linear motor elevator which can reduce the size and weight of a linear motor serving as a drive source, ensure rigidity, and further enhance the cooling effect.

[0009]

In order to achieve the above object, the present invention provides a sheave provided at the upper part of a hoistway for winding a hanging rope, and a car provided at one end of the hanging rope and a car at the other end. A counterweight provided, a primary conductor of a cylindrical linear motor provided on either the car or the counterweight, and a circle vertically provided in the hoistway so as to penetrate through the primary conductor. A columnar linear motor secondary conductor is provided, and a thrust force is generated between the primary conductor and the secondary conductor by controlling energization of the primary conductor so that the car and the counterweight are relatively moved up and down via a suspension rope. In the linear motor elevator, the primary conductor has a plurality of iron cores radially arranged with a small gap on the outer circumference of the secondary conductor, and the cores are inserted through the iron cores. A cylindrical coil disposed so as to surround the outer peripheral surface of the next conductor, and a blower plate for connecting the plurality of iron cores to the outer peripheral surface side of the cylindrical coil and sending traveling wind to the cylindrical coil. Provide a linear motor elevator. Further, a cover is provided at the upper and lower ends of the primary conductor to cover the iron core, the cylindrical coil, and the blower plate. Furthermore, a filter for removing foreign matter is provided between the blower plate and the cylindrical coil.

[0010]

With the above structure, the present invention controls the energization of the cylindrical coil of the primary conductor to generate a thrust between the secondary conductor and the secondary conductor, thereby moving the cage and the counterweight relatively up and down via a suspension rope. During this ascending / descending, the wind blows the traveling wind to the cylindrical coil to dissipate the heat generated by the cylindrical coil, and the blower plate connects the divided iron cores to ensure the rigidity of the primary conductor. 1 more
The iron core by the cover provided on the upper and lower ends of the next conductor,
The cylindrical coil and the blower plate are covered so that foreign matter does not enter between the primary conductor and the secondary conductor. Furthermore, a filter for removing foreign matter is provided between the blower plate and the cylindrical coil to prevent foreign matter from entering between the primary conductor and the secondary conductor.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the structure of a niria motor that is a drive source for a linear motor elevator according to the present invention, and FIG. 2 is a front view thereof.

In the figure, the linear motor is composed of a cylindrical secondary conductor 8 which is provided over the vertical direction for a long time in the hoistway 1.
Radially equidistant (90 °
4 sets of iron cores 15 arranged along the along-direction of the secondary conductor, and the iron cores 15
A cylindrical coil 16 which is inserted through the inside of the secondary conductor 8 and surrounds the outer peripheral surface of the secondary conductor 8 is provided so as to cover the outer side of the cylindrical coil 16. And a blower plate 17 for sending wind. Four blower plates 17 are provided, each of which is a cylindrical coil.
It is composed of blades 18 for sending the wind to 16 and a fixing plate 19 for connecting the blades 18 to the iron core 15. As for the blades 18, ascending blades 18a for sending the wind to the cylindrical coil 16 when the elevator is rising and descending blades 18b for sending the wind when descending are respectively arranged in a vertical direction on a general blower plate 17 and are lifted. The blade 18a is arranged in the upper half and the descending blade 18b is arranged in the lower half. A cover 20 is attached to the upper and lower ends of the linear motor to cover the iron core 15 and the cylindrical coil 16 that form the primary conductor (coil) 7 and the blower plate 17. As shown in FIG. A hole 20a is formed so that the conductor 8 can be inserted.

FIG. 4 shows the structure of the iron core 15. The iron core 15 has an iron plate 21 having the shape shown in FIG. 4 (a) and an inner circumference concentric with the secondary conductor 8 as shown in FIG. 4 (b). It is manufactured by stacking so as to form the surface 22 and fixing it by a stud 23. A groove (slot) 24 is formed on the inner peripheral surface 22 side of the iron core 15, and the cylindrical coil 16 is inserted into the groove 24. The magnetic force generated from the primary conductor (coil) 7 is proportional to the number of cylindrical coils 16 and the length of the iron core.

FIG. 5 shows a cross section of the fixed plate 19. As described above, the fixed plate 19 is provided with the ascending blade 18a and the descending blade 18b, respectively. Primary conductors (coils) 7 and 2 of the linear motor configured as described above
If the secondary conductor 8 is used, the iron core 15 is generated by energizing the cylindrical coil 16.
A magnetic field is generated in the core, a thrust is generated between the inner peripheral surface 22 of the iron core 15 and the secondary conductor 8, and the primary conductor (coil) 7 moves in the thrust direction. That is, when the primary conductor (coil) 7 is provided on the counterweight 6, the counterweight 6 is driven to move up and down, and the car 5 moves up and down accordingly. At this time, the traveling wind is forcibly forced by the blower plate 17 provided outside the cylindrical coil 16 and connecting the iron core 15.
Is sprayed on.

As described above, according to this embodiment, of the iron core 15 and the cylindrical coil 16 forming the primary conductor (coil) 7,
The iron core 15 is radiated 90 with a small gap around the outer circumference of the secondary conductor 8.
Since the iron cores 15 are divided at intervals, and the iron cores 15 are connected to each other by the air blower plate 17, the weight of the primary conductor (coil) 7 can be reduced, and at the same time, the air blower plate 17 enables the iron cores 15
The rigidity can be secured, and a cooling effect can be obtained. Further, since the blower plate 17 is provided with ascending and descending blades 18a, 18b, it is possible to obtain the same cooling action when the car 5 is ascending and descending. Furthermore, since the cover 20 is attached to the upper and lower ends of the iron core 15 and the cylindrical coil 16 that form the primary conductor (coil) 7, dust, foreign matter, and the like are formed on the inner peripheral surface 22 of the cylindrical coil 16 and the secondary conductor 8. Can be prevented from entering between the
A stable thrust can be obtained.

In this embodiment, the iron core 15 is divided into four,
Although the iron cores 15 are arranged at 90 ° intervals, the iron core 15 may be divided into three or five parts, and the same effect can be obtained although the weight and thrust of the iron core itself are somewhat affected. In such a case, it goes without saying that the number of the blower plates 17 is also three and five, respectively. Also, in this embodiment,
Although the raising blades 18a are provided on the upper half of one blower plate 17 and the lowering blades 18b are provided on the lower half, for example, as shown in FIG. 6, only one raising blade 18a is provided on one blower plate 17. It is also possible to attach only the descending blades 18b to the other blower plate 17 and to connect the iron cores 15 by using a total of four blades, two for each blade.

Next, the second embodiment of the present invention will be described with reference to FIGS.
Examples will be described. 7 and 8 show a modification of the fixing plate 19 in the above-described embodiment. In the drawings, the fixing plate 25 of this embodiment has the raising blade 18a and the lowering blade 18b as in the above-mentioned embodiment. Further, a groove 26 is formed in the longitudinal direction on the side of the cylindrical coil 16 and a filter 27 for removing dust and foreign matters as shown in FIG. 8 is attached to the groove 26. According to this fixed plate 25, the air blow plate 17
The filter 27 removes foreign matter in the traveling wind that is sent, and it is possible to prevent the foreign matter from adhering to the cylindrical coil 16 and the secondary conductor 8 and form a linear motor that can obtain stable thrust. it can.

[0018]

As described above, according to the present invention, it is possible to reduce the size and weight of the primary conductor (coil) of the linear motor which is the drive source of the linear motor elevator, and also to secure the rigidity, and further, the primary conductor (coil). Therefore, a very practical linear motor elevator can be provided because the cooling effect can be obtained.

[Brief description of drawings]

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

FIG. 2 is a front view of a linear motor of a linear motor elevator according to the present invention.

FIG. 3 is a perspective view of a cover of a linear motor of a linear motor elevator according to the present invention.

FIG. 4 is a configuration diagram of an iron core of a linear motor of a linear motor elevator according to the present invention.

FIG. 5 is a configuration diagram of a fixed plate of the linear motor of the linear motor elevator of the present invention.

FIG. 6 is a modification of the fixing plate of the linear motor of the linear motor elevator according to the present invention.

FIG. 7 is a modification of the fixing plate of the linear motor of the linear motor elevator according to the present invention.

FIG. 8 is a filter of the fixed plate of the linear motor of the linear motor elevator of the present invention.

FIG. 9 is a schematic diagram showing the overall configuration of a linear motor elevator.

[Explanation of symbols]

1 ... hoistway, 3 ... sheave, 4 ... suspension rope, 5 ... basket,
6 ... counterweight, 7 ... primary conductor, 8 ... secondary conductor, 15
… Iron core, 16… Cylindrical coil, 17… Blower plate, 20… Cover, 25
…filter.

Claims (3)

[Claims] 1. A sheave provided at an upper part of a hoistway for winding a suspension rope, a car provided at one end of the suspension rope and a counterweight provided at the other end, and one of the car or the counterweight. The primary conductor of a cylindrical linear motor provided and a secondary conductor of a columnar linear motor that is vertically long in the hoistway so as to penetrate through the primary conductor are provided. In a linear motor elevator in which a thrust force is generated between the primary conductor and the secondary conductor by controlling the energization of the secondary conductor, and the cage and the counterweight are relatively moved up and down via a suspension rope, the primary conductor is the secondary conductor of the secondary conductor. A plurality of iron cores that are radially divided and arranged with a small gap on the outer circumference, and a cylindrical coil that is inserted through the iron cores and that surrounds the outer peripheral surface of the secondary conductor are provided. A linear motor elevator, comprising a blower plate for connecting the plurality of iron cores to the outer peripheral surface side of the cylindrical coil and for sending traveling wind to the cylindrical coil. 2. The linear motor elevator according to claim 1, wherein a cover for covering the iron core, the cylindrical coil, and the blower plate is provided at upper and lower ends of the primary conductor. 3. The linear motor elevator according to claim 1, wherein a filter for removing foreign matter is provided between the blower plate and the cylindrical coil.