KR20060026005A - Elevator hoist - Google Patents

Abstract

An elevator hoist comprising a rotating section supported rotatably on a basic body. The rotating section comprises a rotating section body, and a driving sheave for passing the main rope of an elevator therearound. The rotating section is rotated by the driving force of a motor. The motor comprises a motor rotor mounted on the rotating section body, and a motor stator mounted on the base body oppositely to the motor rotor. The rotating section body is provided with a section for securing the driving sheave.

Description

Hoist for elevator {ELEVATOR HOIST}

The present invention relates to an elevator hoisting machine in which a drive sheave on which an elevator main rope is wound is provided on a rotating part.

For example, in the conventional elevator hoist disclosed in Japanese Patent Application Laid-Open No. 2000-289954, a drive sheave on which a main rope is wound is integrally provided on a rotating body (bowl-shaped body). The rotating body is rotatably supported by the main shaft. Both ends of the main shaft are supported by a support plate and a base.

However, it is preferable to change the supporting structure of the rotating body according to the weight of the car and the counterweight. That is, if the weight of the car and the counterweight is relatively large, the rotor should be supported on both sides, but if the weight of the car and the counterweight is relatively small, the supporting structure is preferably a cantilever structure. In response to such a change in the support structure, it has conventionally been necessary to produce two types of hoisting machines different from each other.

This invention is made | formed in order to solve the above subjects, and an object of this invention is to obtain the elevator hoist which can aim at the commonization of components in the case where the support structure of a drive sheave is a cantilever support and a double cantilever support.

An elevator hoisting machine according to the present invention has a base, a rotating body, and a driving sheave in which an elevator main rope is wound, and a rotating part rotatably supported by a body, and a motor rotor mounted on the rotating body. And a motor stator mounted on the body so as to face the motor rotor, and having a motor for rotating the rotating part, wherein the rotating part main body is provided with a sheave fixing part for fixing the driving sheave.

1 is a cross-sectional view of a hoist for elevator of a cantilever support structure according to Embodiment 1 of the present invention;

2 is a cross-sectional view showing a state in which the hoist for elevator of FIG. 1 is a double cantilever support structure;

3 is a perspective view showing the appearance of the hoist for elevator of FIG. 2;

4 is a cross-sectional view showing a state in which the elevator hoisting machine according to the second embodiment of the present invention has a double cantilever support structure;

5 is a cross-sectional view showing a state in which the elevator hoisting machine according to the third embodiment of the present invention is a double cantilever support structure;

It is a perspective view which shows an example of the whole structure of the elevator apparatus to which the elevator hoisting machine of this invention is applied.

EMBODIMENT OF THE INVENTION Hereinafter, very suitable embodiment of this invention is described with reference to drawings.

Embodiment 1.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the elevator hoisting machine of the cantilever support structure which concerns on Embodiment 1 of this invention. In the figure, the base 1 is a fixed side component fixed to the mounting portion of the hoisting machine. In addition, the base 1 has a plate-shaped portion 1a, an outer cylindrical portion 1b extending to one side from the outer circumferential portion of the plate-shaped portion 1a, and a main shaft protruding to one side from the center of the plate-shaped portion 1a. Has 1c) The plate-shaped portion 1a, the outer cylindrical portion, and the main shaft 1c are formed integrally with the base 1.

The recessed part 1d recessed with respect to the outer peripheral part is formed in the center part on the opposite side to the main shaft 1c of the plate-shaped part 1a. As a result, the plate-shaped portion 1a is not a flat plate but a plate. The through hole 1e which extends in the axial direction of the main shaft 1c and penetrates the main shaft 1c is provided in the center of the main shaft 1c.

The rotating part 3 is supported by the main shaft 1c via the bearing 2. The rotating part 3 is rotatable about the main shaft 1c. Moreover, the rotating part 3 has the rotating part main body 4 in which the bearing 2 was provided in the inner peripheral part, and the cylindrical drive sheave 5 fixed to the outer peripheral part of the rotating part main body 4.

The rotating body 4 has a cylindrical bearing mounting portion 4a enclosing the main shaft 1c, a sheave fixing portion (stairway portion) 4b provided at an outer circumference of the bearing mounting portion 4a, and an outer cylindrical portion ( It has the inner cylinder part 4c arrange | positioned inside 1b). The bearing attaching part 4a, the sheave fixing part 4b, and the inner cylindrical part 4c are integrally formed in the rotating part main body 4. As shown in FIG.

The drive sheave 5 is comprised separately from the rotating part main body 4, and is being fixed to the sheave fixing part 4b. The drive sheave 5 is wound with a plurality of main ropes for fastening elevator cars and counterweights. On the outer circumferential surface of the drive sheave 5, a plurality of rope grooves into which the main rope is inserted are provided.

An armature 6 as a motor rotor is fixed to the outer circumferential surface of the inner cylindrical portion 4c. A stator winding 7 as a motor rotor facing the armature 6 is fixed to the inner circumferential surface of the outer cylindrical portion 1b. The rotating part 3 is rotated by the driving force of the motor 8 which has the armature 6 and the stator winding 7.

In the through-hole 1e, the rotation detection shaft 9 which rotates integrally with the rotation part 3 is inserted. At one end of the rotation detection shaft 9, a disk-shaped fixing portion 9a fixed to the axial end of the bearing attaching portion 4a is provided. The other end of the rotation detection shaft 9 protrudes from the through hole 1e into the recess 1d.

The rotation detector 10 which detects rotation of the rotation detection axis 9 is provided in the dish-shaped part 1a. The rotation detector 10 is disposed in the recess 1d. As the rotation detector 10, an encoder etc. are used, for example, but the illustration of a specific structure is abbreviate | omitted.

Moreover, this hoisting machine is a thin hoisting machine whose whole axial dimension is shorter than the drive sheave 5 or the whole diameter dimension.

Next, FIG. 2 is sectional drawing which shows the state which made the elevator traction machine of FIG. 1 the double cantilever support structure. In the figure, the base 1 is fixed on the support 11. On the support 11, the support frame 12 is fixed at intervals with respect to the base 1. A drive sheave 13 having a larger axial dimension than the drive sheave 5 of FIG. 1 is fixed to the sheave fixing portion 4b. The drive sheave 13 is supported by the base 1 via the rotating body main body 4 and is rotatably supported by the support frame 12.

The drive sheave 13 is integrally provided with a sheave shaft 13a protruding from one side. The support frame 12 rotatably supports the sheave shaft 13a via the bearing 14. The support frame 12 is provided with a bearing hole 12a on which the bearing 14 is mounted. Another configuration is the same as FIG.

It is a perspective view which shows the external appearance of the hoist for elevator of FIG. The elevator hoisting machine is provided with a brake device 15 for braking the rotation of the rotary unit 3.

Such an elevator hoisting machine can be used as a hoist of a cantilever support structure by fixing the drive sheave 5 for cantilever support to the sheave fixing part 4b of the rotating part main body 4, as shown in FIG. Moreover, as shown in FIG. 2, the double cantilever support is carried out by fixing the drive sheave 13 for double cantilever support to the sheave fixing part 4b, and also supporting the drive sheave 13 by the support frame 12. It can also be used as a hoist of structure.

That is, the drive sheave 5 of the kind supported by only the rotating part main body 4, and the drive sheave of the kind supported by both the support frame 12 and the rotating part main body 4 to the sheave fixing part 4b. The drive sheave of any one type of (13) is selectively fixed. In other words, one type of drive sheave of one of the plurality of types of drive sheaves 5 and 13 having different axial lengths is selectively fixed to the sheave fixing part 4b.

By such a structure, many parts, such as the base 1, the rotation part main body 4, the motor 8, the rotation detection shaft 9, and the rotation detector 10, are supported by the drive sheave in the case of cantilever support. In the case of double cantilever support, it can be made common, and cost can be reduced.

Moreover, the whole can be comprised compactly, for example, it can arrange | position easily in the upper part or lower part in the hoistway in the elevator without a machine room.

In addition, since the main shaft 1c is formed integrally with the base 1, the number of parts can be reduced.

Embodiment 2.

Next, FIG. 4 is sectional drawing which shows the state which made the traction machine for elevators which concerns on Embodiment 2 of this invention as the double cantilever support structure. In the first embodiment, the sheave shaft 13a is integrally formed on the drive sheave 13, but in the second embodiment, the sheave shaft 16 separate from the drive sheave 13 is fixed to the drive sheave 13. have. The sheave shaft 16 protrudes on one side of the drive sheave 13 and is rotatably supported by the support frame 12 via the bearing 14. The rotation detection shaft 9 is fixed to the sheave shaft 16. The other configuration is the same as that in the first embodiment. In addition, the state made into the cantilever support structure is the same as that of FIG.

Thus, the sheave shaft 16 may be comprised separately from the drive sheave 13.

Embodiment 3.

Next, FIG. 5 is sectional drawing which shows the state which made the hoist for elevators by Embodiment 3 of this invention the double cantilever support structure. In Embodiment 1, although the sheave shaft 13a was provided in the drive sheave 13, in Embodiment 3, the sheave shaft 17 separate from the drive sheave 13 and the support frame 12 is the support frame 12. It is fixed to). The drive sheave 13 is rotatably supported by the sheave shaft 17 via the bearing 14. The rotation detection shaft 9 is fixed to the drive sheave 13. The other configuration is the same as that in the first embodiment. In addition, the state made into the cantilever support structure is the same as that of FIG.

In this manner, the sheave shaft 17 fixed to the support frame 12 may rotatably support the drive sheave 13.

6 is a perspective view which shows an example of the whole structure of the elevator apparatus to which the elevator hoisting machine of this invention is applied. In the drawing, a pair of car guide rails 22 and a pair of counterweight guide rails 23 are provided in the hoistway 21. The car 24 is guided by the car guide rail 22 to move up and down the hoistway 21. The counterweight 25 is guided by the counterweight guide rail 23 to elevate the inside of the hoistway 21.

A mechanical unit box 26 is disposed above the hoistway 21. The mechanical unit box 26 houses a hoist 27 as shown in any one of the first to third embodiments. The hoist 27 is arrange | positioned so that the rotating shafts of the drive sheaves 5 and 13 may become horizontal.

The main ropes 28 are wound around the drive sheaves 5 and 13. A car 24 is suspended from one end of the main rope 28. Counterweight 25 is suspended on the other end of the main rope (28). That is, the car 24 and the counterweight 25 are suspended by the 1: 1 roping system.

Moreover, the control panel 29 which controls the hoist 27 is provided in the hoistway 21.

In such an elevator apparatus, the drive sheaves 5 and 13 are rotated so that the car 24 and the counterweight 25 can elevate the inside of the hoistway 21 along the guide rails 22, 23.

In addition, in the above example, although the main shaft 1c was fixed with respect to the base | substrate 1, a main shaft can be provided in a rotating part and it can be made to support a main shaft rotatably with a base.

In the above example, two types of drive sheaves 5 and 13 are used, but three or more types of drive sheaves may be provided.

Moreover, the hoisting machine of this invention is applicable to the elevator apparatus of various types other than the elevator apparatus of the type shown in FIG. For example, this invention is applicable also to the elevator apparatus in which a hoist is installed in a machine room, and the elevator apparatus without a machine room in which a hoist is arrange | positioned in a hoistway. In addition, the hoist may be disposed at a lower portion of the hoistway. In addition, the roping scheme is not limited to 1: 1 roping, and may be 2: 1 roping, for example.

As mentioned above, this invention can be used for the elevator hoisting machine etc. in which the drive sheave by which the elevator main rope is wound is provided in the rotating part.

Claims (9)

gas, A rotating unit having a rotating unit body and a driving sheave in which the main rope of the elevator is wound and rotatably supported by the base; A motor having a motor rotor mounted on the rotating body, and a motor stator mounted on the base so as to face the motor rotor, and rotating the rotating part. Equipped, Elevator hoist provided with the sheave fixing part which fixes the said drive sheave to the said rotation part main body. The method of claim 1, The base has an outer cylindrical portion to which the motor stator is fixed, and a main shaft protruding from one side, The rotating part main body has an inner cylindrical part which is disposed inside the outer cylindrical part and on which the motor rotor is mounted, and is supported by the main shaft so as to be rotatable about the main shaft. The method of claim 2, At the center of the main shaft, a through hole extending in the axial direction of the main shaft and penetrating the main shaft is provided. The rotation part is provided with a rotation detection shaft inserted into the through hole and rotating integrally with the rotation part, The hoisting machine for elevator provided with the said gas in which the rotation detector which detects the rotation of the said rotation detection shaft is provided. The method of claim 1, The sheave fixing part includes any one of a drive sheave of a type supported by only the rotating part main body, a support frame disposed at a distance from the base, and a drive sheave of a kind supported by both the rotating part main body. An elevator hoisting machine in which a kind of driving sheave is selectively fixed. The method of claim 1, An elevator hoisting machine, to which said sheave fixing part selectively drives one type of drive sheaves of a plurality of types of drive sheaves having different axial lengths. The method of claim 1, Also provided with support frames spaced from said gas, The drive sheave is an elevator hoisting machine which is supported by the gas through the rotating body main body and is rotatably supported by the support frame. The method of claim 6, The drive sheave has a sheave shaft protruding on one side, the support frame is an elevator hoisting machine is configured to rotatably support the sheave shaft. The method of claim 6, An elevator hoisting machine, wherein a sheave shaft separate from the drive sheave is fixed to the drive sheave, and the sheave shaft is rotatably supported by the support frame. The method of claim 6, An elevator hoisting machine, wherein the support frame is provided with a sheave shaft protruding toward the drive sheave, and the drive sheave is rotatably supported by the sheave shaft.

Images