JP2001048450A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device which can maintain easily. SOLUTION: This elevator elevates a car 10 and balance weight 11 through a rope 40 along a guide rail 12 or 15 arranged in an elevating road 9 by a winch 19 whose drive source is a thin type motor 17. A winch unit 22 is formed by arranging the winch 19 horizontally on the top of the elevating road 9 and integrating with a turning sheave 20 for guiding the rope 40 to the car 10 and balance weight 11 and also constituted elevatably along the elevating road 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus in which a hoist for raising and lowering a car room and a balance weight is horizontally arranged at the top of a hoistway and can be raised and lowered along the hoistway. .

[0002]

2. Description of the Related Art Generally, as shown in FIG. 7, an elevator apparatus includes an electric motor 2 and a drive sheave 3 in a machine room 1 provided on the floor via a connecting means 4 such as a reduction gear. While being connected and arranged, the car 5 and the balance weight 8 arranged in the hoistway 6 are connected by the rope 5 wound around the drive sheave 3, and the motor 2 is driven to rotate the drive sheave 3. The cab 7 is moved by winding up the rope 5.

[0003] However, in the configuration in which the machine room 1 is provided independently as described above, the proportion of the space for the elevator apparatus in the building increases, and although not shown, for example, in Japanese Patent No. 2593288, a thin motor is used. By arranging a hoist as a drive source vertically on the side of the top of the hoistway, and in Japanese Patent Application No. 10-305100 filed by the same applicant as the present application, a thin motor is used as a drive source. It has been proposed that the horizontal arrangement of the hoisting machine at the top of the hoistway omits the machine room and reduces the proportion of space occupied by elevator equipment in the building.

[0004]

As described above, in the conventional elevator apparatus, in order to reduce the proportion of the space occupied by the elevator apparatus in a building, a hoist having a thin motor as a driving source is mounted on a hoistway. Vertical placement on top side,
Or because it is horizontally arranged at the top of the hoistway, since maintenance work on these hoists is generally performed while standing on the top of the cab, the work is directed upward or vertically, for example, There is a problem that workability is extremely poor, such as requiring both hands to tighten or loosen the screw.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator apparatus capable of reducing the ratio of space occupied by the elevator apparatus and facilitating maintenance work. Things.

[0006]

An elevator apparatus according to a first aspect of the present invention provides a cab and a balance along a guide rail provided in a hoistway by a hoisting machine driven by a thin motor. In an elevator apparatus in which a weight is raised and lowered through a rope, a hoist is horizontally arranged at the top of a hoistway, and is integrated with a turning pulley that guides a rope to a cab and balance weights to form a hoist unit. In addition, the hoist unit is configured to be able to move up and down along the hoistway.

According to a second aspect of the present invention, there is provided an elevator apparatus according to the first aspect, wherein the hoist unit is moved up and down along at least one of the cab and the guide rail of the balance weight. It is a thing.

According to a third aspect of the present invention, in the elevator apparatus according to the first aspect, the lifting and lowering of the hoist unit is performed by:
Drive means comprising a screw having both ends supported by bearings fixed to the side wall of the hoistway, a nut mounted on the hoist unit and screwing with the screw, and a handle for rotating the screw. It is.

According to a fourth aspect of the present invention, there is provided the elevator apparatus according to the third aspect, wherein a steering operation of the driving means is performed at an entrance or exit on any floor.

According to a fifth aspect of the present invention, there is provided an elevator apparatus according to the third aspect, wherein a handle operation of the driving means is performed at an upper part of the cab.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a configuration of an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a perspective view showing a configuration of a hoist unit of the elevator apparatus in FIG. 3 is a perspective view schematically showing a state in which the hoisting machine unit in FIG. 2 is lowered for maintenance work. FIG. 4 shows a configuration of a lowering prevention device of the hoisting machine unit. Sectional view showing the state at the time,
FIG. 5B is a cross-sectional view illustrating a non-operating state, and FIG. 5 is a front view illustrating a schematic configuration of a rope locking mechanism.

In the figure, 9 is a hoistway, 10 and 11 are cabs and balance weights disposed in the hoistway 9, and 12 and 13 are disposed along the wall surface of the hoistway 9 and A pair of first guide rails 14 and 15 for guiding the movement are arranged along the wall surface of the hoistway 9 and a pair of second guide rails for guiding the movement of the cab 10.
Reference numeral 6 denotes a frame which is disposed so as to be able to move up and down along each of the guide rails 12 to 15. Reference numeral 17 denotes a thin motor horizontally arranged at one upper end of the frame 16. With a sheave, a hoisting machine 19 together with a thin motor 17
Is composed.

The first and second members 20 and 21 are rotatably mounted on the other end of the frame 16 via respective shafts 20a and 21a.
And a second deflecting pulley, and these 16 to 21 constitute a hoisting machine unit 22. Reference numeral 23 denotes a pulley for balance weight provided at a position corresponding to the first turning pulley on the upper part of the balance weight 11, and reference numeral 24 denotes a pulley provided at a position corresponding to the second turning pulley 21 on one side of the lower part of the cab 10. The first cab pulley 25 is a second cab pulley provided on the other side of the lower part of the cab 10 in a pair with the first cab pulley 24.

Reference numeral 26 denotes a hoist unit 2 as shown in FIG.
2, a stopper clamp 26b is fitted into a stop hole 27 formed on the side surface of the frame 16 by operating the arm 26a to move the hoisting machine unit 22. Prevent downward movement by regulating. 28
A screw 30 is supported at both ends by a pair of bearings 29 fixed to the side wall of the hoistway 9, and is formed of, for example, a helical groove or a screw. A handle 30 is connected to the lower end of the screw 28 to drive the screw 28 to rotate. , 31 are nuts attached to the frame body 16 at positions corresponding to the screws 28 and screwed with the screws 28.
1 constitutes the driving means 41.

The bearing 3 is fixed to the side wall of the hoistway 9.
A handle 35 for operating a rotational drive is connected to a lower end side of the worm with both ends supported by 3, 34.
36 is a worm wheel meshed with the worm 32, 3
Reference numeral 7 denotes a take-up sheave that is fixedly integrated on the same axis as the worm wheel 36 and is supported by a support frame 38. The take-up sheave 7 is disposed corresponding to the second cab pulley 25.
2 to 38 constitute a rope locking mechanism 39.

At one end, 40 is tied to the ceiling of the hoistway 9,
It descends, is wrapped around the balance weight pulley 23, rises, is wrapped around the first turning pulley 20, is pulled in the horizontal direction, is wrapped around the drive sheave 18, and is pulled in the horizontal direction again. Is wrapped around the second turning pulley 21 and descends again. And the first cab pulley 24
The rope is wound around the pulley 25 for the second cab, rises again, and the other end is connected to the take-up sheave 37 of the locking mechanism 39.

The elevator apparatus according to the first embodiment of the present invention is configured as described above. When the thin motor 17 is energized, the drive sheave 18 rotates and the cab 10 and the balance weight 11 Move up and down in opposite directions. Then, for example, when a failure occurs in the thin motor 17 and maintenance work is required, the cab 10 is moved upward, and the cab 10 is not described in the above configuration.
The stop at a predetermined position is performed by operating an emergency stop mounted on the vehicle.

Then, the operator operates the arm 26a from the upper part of the car room 10 to operate the toggle clamp 26,
As shown in FIG. 4B, the stopper 26b is removed from the stopper hole 27. Then, by operating the handle 30 of the driving means 41 to rotate the screw 28, the screw 28 and the nut 31 cooperate to operate the hoisting machine unit 2.
2 is lowered along each guide rail 12 to 15.
Since the rope 40 is loosened by a length corresponding to the distance the hoisting unit 22 descends by this operation, the worm 32 is rotated by operating the handle 35 of the loosening prevention mechanism 39, and the worm 32 and the worm wheel 36 are rotated. By cooperating, the rope 40 is wound around the take-up sheave 37 by the length thereof to prevent the rope 40 from loosening. Thereafter, as shown by a broken line in FIG. 3, the worker 42 performs maintenance work as if he were working at a work desk.

When the maintenance work is completed, the operator 42 operates the handle 30 of the driving means 41 in the reverse direction to rotate the screw 23 in the reverse direction, whereby the hoisting machine unit 2
2 is raised along each guide rail 12 to 15.
Then, the toggle clamp 26 is operated by operating the arm 26a, and the stopper 26b is fitted into the stopper hole 27 as shown in FIG.
Is held at a predetermined position, and all the work associated with the maintenance is completed.
Although not shown, the handle 30 of the driving means 41 may be disposed near the entrance to the car room 10 on the top floor, and the handle 30 may be operated from the doorway. Needless to say, the workability is improved as compared with the case of performing the operation.

As described above, according to the first embodiment, the hoist unit 22 is constructed by horizontally disposing the thin motor 17 and the drive sheave 18 above the frame 16. By operating the handle 30 of the driving means 41 and lowering it to a predetermined position, it is possible for the worker 42 to perform a maintenance work at the upper part of the car room 10 as if working at a work desk. It is possible to reduce the ratio occupied by the space for the device, to facilitate the maintenance work, and to improve the workability.

The hoist unit 22 is moved up and down along the existing first and second guide rails 12 to 15 arranged for moving the car room 10 and the balance weight 11. In addition, there is no need to provide a guide rail for raising and lowering the hoisting machine unit 22, so that cost can be reduced. Further, the lifting and lowering of the hoisting machine unit 22 is performed by operating the handle 30 of the driving means 41.
2 can be easily set to a position where the work can be easily performed, and if the operation can be performed at any of the floors, for example, at the entrance 51 (shown in FIG. 1) on the top floor, the workability can be further improved. Become.

Embodiment 2 FIG. FIG. 6 is a front view showing a schematic configuration of a locking mechanism of an elevator apparatus according to Embodiment 2 of the present invention. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 43 denotes a pair of racks provided on both sides of the hoisting machine unit 22 so as to protrude toward the wall surface of the elevating chamber 9 by support rods 44; 45, small gears meshed with the racks 43; The take-up sheave is fixedly integrated with the small gear 45 on the same axis, and is supported by the support frame 48.
The rope pulleys 25 are arranged corresponding to the pulleys 25 for the car cab, respectively.
Is composed.

One end 50 is connected to one take-up sheave 46, descends and is wound around the balance weight pulley 23, rises, is wound around the first turning pulley 20, and is pulled in the horizontal direction. After that, it is wrapped around the drive sheave 18 and pulled in the horizontal direction again, wrapped around the second turning pulley 21, and descends again. Then, after being wrapped around the first cab pulley 24 and pulled in the horizontal direction, it is wrapped around the second cab pulley 25 and ascends again, and the other end is attached to the other take-up sheave 47. The rope to be connected.

In the second embodiment as well, as in the first embodiment, for example, when a failure occurs in the thin motor 17 and maintenance work is required, the cab 10 is moved upward and the cab 10 is moved upward. An emergency stop (not shown) attached to the vehicle is operated to stop at a predetermined position. Then, after the worker 42 operates the toggle clamp 26 shown in FIG. 4 from the upper part of the car room 10 to release the stopper 26b from the stopper hole 27, the handle 30 of the driving means 41 is operated to operate the hoisting machine. The unit 22 is lowered to a predetermined position, and with this lowering, both racks 43 are also lowered,
Since the two small gears 45 meshed with the two racks 43 respectively rotate, the two winding sheaves 46 and 47 fixedly integrated with the small gear 45 also rotate, and the hoisting machine unit 22 has moved down. The length corresponding to the length of each rope is prevented from being wound up.

As described above, according to the second embodiment, the locking is performed by the locking mechanism 49 that operates in accordance with the lowering of the hoist unit 22, so that the locking mechanism 39 according to the first embodiment is used. In comparison with the case, the operation becomes easy because the operation of the handle is not required, and the workability can be improved.

[0026]

As described above, according to the first aspect of the present invention, the cab and the balance weight are moved along the guide rail provided in the hoistway by the hoisting machine driven by the thin motor. In the elevator apparatus, the hoist is horizontally arranged at the top of the hoistway and integrated with the turning pulley that guides the rope to the cab and the balance weight to form a hoist unit. The hoist unit is configured to be able to move up and down along the hoistway, so that the space occupied by the elevator device can be reduced and the maintenance work can be facilitated to improve the workability. can do.

According to a second aspect of the present invention, in the first aspect, the hoist unit is configured to move up and down along at least one of the cab and the guide rail of the balance weight. It is possible to provide an elevator apparatus capable of reducing the cost as well as improving the workability.

According to a third aspect of the present invention, in the first aspect, a screw whose both ends are supported by a bearing fixed to a side wall of a hoistway, wherein the screw of the hoist unit is moved up and down.
Since it is performed by a driving means composed of a nut mounted on the hoist unit and screwed with the screw, and a handle for rotating the screw, the hoist unit is easily set to a position where work can be easily performed, An elevator apparatus capable of further improving workability can be provided.

According to a fourth aspect of the present invention, in the third aspect, the handle operation of the driving means is performed at the entrance of any of the floors, so that it is possible to improve the workability. An apparatus can be provided.

According to a fifth aspect of the present invention, in the third aspect, since the handle operation of the driving means is performed in the upper part of the cab, an elevator apparatus capable of improving workability is provided. Can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an elevator apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view showing a configuration of a hoist unit of the elevator apparatus in FIG.

3 is a perspective view schematically showing a state in which a hoisting machine unit in FIG. 2 is lowered to perform a maintenance operation.

4A and 4B show a configuration of a lowering prevention device of a hoist unit, wherein FIG. 4A is a cross-sectional view showing a state during operation, and FIG. 4B is a cross-sectional view showing a state during non-operation.

FIG. 5 is a front view illustrating a schematic configuration of a rope locking mechanism.

FIG. 6 is a front view showing a schematic configuration of a locking mechanism of an elevator apparatus according to Embodiment 2 of the present invention.

FIG. 7 is a schematic diagram showing a configuration of a conventional elevator device.

[Explanation of symbols] 9 elevator room, 10 car room, 11 balance weight,
12, 13 First guide rail, 14, 15 Second guide rail, 17 Thin motor, 18 Drive sheave, 19
Hoisting machine, 20 first turning pulley, 21 second turning pulley, 22 hoisting unit, 23 balance weight pulley, 24 first cab pulley, 25 second cab pulley, 26 toggle Clamp, 28 screw, 30
Handle, 31 nut, 32 worm, 35 Handle, 36 worm wheel, 37, 46, 47
Winding sheave, 39,49 locking mechanism, 40,50 rope, 43 rack, 45 small gear.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Naoki Hashiguchi 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Inventor Masaya Inoue 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F term in Ryo Denki Co., Ltd. (reference) 3F301 BB02 CA12 3F305 BA02 BA11 BB19 3F306 AA02 BC04 BC10

Claims (5)

[Claims] An elevator apparatus in which a cab and a balance weight are raised and lowered along a guide rail provided in a hoistway by a hoist using a thin motor as a drive source. A hoist is horizontally arranged at the top of the hoistway, and the hoist unit is formed integrally with the turning pulley that guides the rope to the cab and the balance weight, and the hoist unit is mounted on the hoistway. An elevator apparatus characterized by being configured to be able to move up and down along. 2. The elevator apparatus according to claim 1, wherein the hoist unit is configured to move up and down along at least one of the cab and the guide rail of the balance weight. 3. A screw whose both ends are supported by bearings fixed to a side wall of a hoistway, a nut mounted on the hoist unit and screwed with the screw, wherein the screw is lifted and lowered by the hoist unit. 2. An elevator apparatus according to claim 1, wherein said driving means is constituted by a driving means comprising a handle for rotating said elevator. 4. The elevator apparatus according to claim 3, wherein a steering operation of the driving means is performed at an entrance of any of the floors. 5. The elevator apparatus according to claim 3, wherein a handle operation of the driving means is performed in an upper part of the cab.