JP2000327242A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure a floor area as large as possible and reduce an over head size by respectively placing a decelerator and a traction sheave out of a projection region of a car and a part of a motor in a projection region of a car, when the car and a traction machine are projected on a horizontal surface. SOLUTION: In an elevator comprising a car 3 lifted and guided along a car guide rail 2, a traction machine mounting table 13 is fixed between the upper parts of a pair of weight guide rails 9, and a traction machine 14 for lifting the car 3 and a balance weight 10 is installed on the table. The traction machine 14 is constructed so that rotation of a motor 17 causes a traction sheave 16 to rotate via a decelerator 15. When the car 3 and the traction machine 14 are projected on a horizontal surface, the decelerator 15 and the traction sheave 16 are placed out of a projection region of the car 3, and a part of the motor 17 is placed in a projection region of a car 5. In addition, the surface of the motor 17 facing to the ceiling of the car 5 is positioned over the bottom of the sheave 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator in which a hoist is installed not in a machine room but in an upper portion of a hoistway.

[0002]

2. Description of the Related Art In recent years, there has been proposed an elevator in which a machine such as a hoist and a control panel is arranged in a hoistway without providing a machine room above the hoistway, that is, an elevator without a machine room.
FIG. 5 is a side view showing a conventional machine room-less elevator disclosed in Japanese Patent Application Laid-Open No. 10-81463, for example. In this example, a hoisting machine 43 is supported by a counterweight guide rail 42 installed in the hoistway 41. The basket 44
It is guided by the car guide rail 45 and is moved up and down in the hoistway 41.

[0003]

In the conventional elevator without machine room as described above, when the hoisting machine 43 and the car 44 are projected vertically on a horizontal plane, the hoisting machine 43 and the car 44 are completely overlapped. The hoistway 4
1, or the floor area of the car 44 is reduced with respect to the limited hoistway area.

[0004] For example, Japanese Patent Application Laid-Open No. Hei 6-345673 discloses a simple elevator for a second floor in which a hoisting machine is supported on a car guide rail just above a car. However, in this example, when the hoist and the car are projected vertically on a horizontal surface, the hoist is arranged so as to completely overlap with the car, so that from the floor level on the top floor to the ceiling of the hoistway , The so-called overhead dimension, is increased by the amount of the hoist.

Further, in an elevator having a counterweight, when the counterweight is lowered to the lowest moving position and the weight shock absorber is fully compressed, the car jumps upward, so that the elevator is higher than the highest moving position of the car. It is necessary to secure a space further above. In other words, if the hoist is placed right above the car, it is necessary to ensure a sufficient gap so that the on-car equipment does not collide with the hoist even if the car jumps up,
Overhead dimensions are correspondingly larger.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can increase the floor area of a car with respect to a limited hoistway area, and can reduce the overhead size. An object is to obtain an elevator that can be reduced.

[0007]

An elevator according to the present invention comprises a hoistway, a car and a counterweight alternately moved up and down in the hoistway, and the car and the counterweight are placed in the hoistway. A suspended rope, a traction sheave around which the rope is wound, a motor for rotating the traction sheave, and a speed reducer connected between the traction sheave and the motor; Equipped with a hoist that raises and lowers the car and the counterweight via a rope, and when the car and the hoist are projected vertically on a horizontal surface, the speed reducer and the traction sheave are out of the projection area of the car. , A part of the motor is arranged in the projection area of the car, respectively,
It is located above the lower end of at least one of the reduction gear and the traction sheave.

In the elevator according to the second aspect of the present invention, the position of the uppermost portion of the motor is the same as or higher than the uppermost portion of another portion of the hoist.

According to a third aspect of the present invention, there is provided an elevator provided in a hoistway, a pair of weight guide rails for guiding lifting of a counterweight, and fixed to upper ends of the weight guide rails, and a reduction gear is mounted. The hoisting machine mounting base is provided.

According to a fourth aspect of the present invention, there is provided an elevator having a fixed arm fixed between a speed reducer and a side wall of a hoistway.

According to a fifth aspect of the present invention, an elevator includes a pair of car guide rails provided in a hoistway for guiding a car up and down, and a fixed arm fixed between the speed reducer and the car guide rails. It is provided.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a side view showing an elevator according to a first embodiment of the present invention, FIG. 2 is a plan view showing the elevator of FIG. 1, and FIG. 1 shows a state where a counterweight has been lowered to a lowermost movement position. .

In the drawing, 1 is a hoistway, 2 is a pair of car guide rails installed in the hoistway 1, 3 is a car which is guided by the car guide rails 2 and moves up and down in the hoistway 1, The car 3 includes a car frame 4, a car room 5 supported by the car frame 4, a pair of car pulleys 6 rotatably provided below the car room 5, and a car for opening and closing the entrance of the car room 5. It has a door 7 and an opening / closing device 8 that is provided above the car room 5 and drives the car door 7. In addition, basket frame 4
Has a pair of vertical columns 4a and a top beam 4b fixed between the vertical columns 4a above the car room 5.

9 is a pair of weight guide rails installed in the hoistway 1, 10 is a counterweight which is raised and lowered in the hoistway 1 along the weight guide rail 9, and 11 is an upper part of the counterweight 10. A rotatable weight pulley 12 is provided at the bottom of the hoistway 1 and is a weight buffer for receiving the counterweight 10, and FIG. ing. The illustration of the car shock absorber for receiving the car 3 is omitted.

Reference numeral 13 denotes a hoisting machine mount fixed between the upper parts of the pair of weight guide rails 9, and reference numeral 14 denotes an upper part of the hoistway 1 which is mounted on the hoisting machine mount 13, and is provided with the car 3 and the counterbalance. It is a hoist that raises and lowers the weight 10, and this hoist 14
A speed reducer 15 mounted on a hoisting machine mount 13, a traction sheave 16 connected to an output shaft of the speed reducer 15, and a speed reducer 1 connected to an input shaft of the speed reducer 15;
5 that drives the traction sheave 16 via the
7 are provided.

As shown in FIG. 2, when the car 5 and the hoisting machine 14 are projected vertically on a horizontal plane, the speed reducer 15 and the traction sheave 16 are out of the projection area of the car 5 (do not overlap with the car 5). (Position), the motor 17 is partially disposed in the projection area of the car 5 (position overlapping with the car 5). Further, as shown in FIG. 1, the surface of the motor 17 facing the ceiling of the car room 5 is located above the lower ends of the speed reducer 15 and the traction sheave 16.
Reference numeral 18 denotes a pair of fixed arms that fix the speed reducer 15 to the side wall 1a of the hoistway 1.

Reference numeral 19 denotes a car 3 and a counterweight 1 in the hoistway 1.
0 is a rope hanging this rope 19,
The car side end 19a is located above the hoistway 1 and the weight side end 19a.
b is fastened to the lower part of the hoisting machine mount 13, respectively. Further, the rope 19 is wound around the pair of car pulleys 6, the traction sheave 16, and the weight pulley 11 in this order from the car side end 19a, and reaches the weight side end 19b. Reference numeral 20 denotes a landing floor, and reference numeral 21 denotes a landing door.

In such an elevator, the counterweight 10
When the car 3 descends to the lowermost movement position and fully compresses the weight shock absorber 12, the car 3 jumps upward as shown by the two-dot chain line in FIG. The space is secured. Here, the overhead dimension OH in FIG. 1 is OH = H1 + d10 + M +
d20.

However, H1 is the top of the equipment on the car 3 (here, the motor 17) which is closest to the equipment above the car 3 (here, the motor 17) when the car 3 jumps up from the floor 20 of the landing on the top floor. The height dimension up to the ceiling of the car room 5). Also, d10 is the dimension between the ceiling of the cab 5 when it jumps up and the motor 17, M is the diameter of the motor 17 (specifically, about 200 mm), and d20 is the top of the hoisting machine 14 (here, the motor). 17) and the ceiling of the hoistway 1.

Assuming that the entire hoisting machine 14 is disposed above the car 3, the overhead dimensions include the height of the hoisting machine support 13 (about 150 mm) and the height of the hoisting machine 14 (about 150 mm). 600 mm) is added. However, in that case, the diameter of the motor 17 is included in the height of the hoisting machine 14.

Therefore, in the first embodiment, (the height of the hoisting machine support base 13) + (the height of the hoisting machine 14), as compared with the case where the entire hoisting machine 14 is disposed directly above the car 3. -(Motor 17
Of the overhead dimension). Specifically, according to the arrangement of the first embodiment, 150 mm + 60
0 mm−200 mm = approximately 500 mm, and the overhead dimension is reduced.

In the case of the hoisting machine 14 having the speed reducer 15, the motor 17 is connected to the speed reducer 15 and the traction sheave 1
6, it can be configured even if the hoisting machine support 13 is not used (for example, when the hoisting machine 14 is hung from the ceiling of the hoistway 1) (the height of the hoisting machine 14)-( Only the diameter of the motor 17) reduces the overhead dimension.

Further, when the uppermost position of the motor 17 is lower than the uppermost portion of the other portions of the hoisting machine 14, the dimension from the uppermost portion of the motor 17 to the uppermost portion of the hoisting machine 14 becomes It is added to the overhead dimension in the above formula. On the other hand, the uppermost position of the motor 17 is
By setting the position at the same height or higher than the top of the other portion, the overhead size can be efficiently reduced.

Furthermore, as shown in FIG. 5, when the hoisting machine 3 and the car 4 are vertically projected on a horizontal surface, the hoisting machine 3 and the car 4 are arranged so as not to overlap at all. In comparison, in the first embodiment, the floor area of the car 5 can be increased with respect to the limited hoistway area.

Further, since the hoisting machine mount 13 on which the speed reducer 15 is mounted is fixed to the upper end of the weight guide rail 9,
The hoisting machine 1 utilizes the space above the hoistway 1 effectively.
4 can be arranged.

Further, a large load applied to the traction sheave 16 acts in a direction to overturn the hoist 14, but the speed reducer 15 is fixed by the fixed arm 18 to the side wall 1a of the hoistway 1.
Is also fixed. That is, one end of the fixed arm 18 is fixed to the side wall 1a, and the other end is fixed to the case of the speed reducer 17, thereby more reliably preventing the hoist 14 from overturning due to the load applied to the traction sheave 16. be able to.

Embodiment 2 FIG. In the first embodiment, the fixed arm 18 is provided between the speed reducer 15 and the side wall 1a of the hoistway 1. However, for example, as shown in FIGS.
A fixed arm 31 may be provided between the hoisting machine 14 and the car guide rail 2 to prevent the hoisting machine 14 from overturning. Also,
In the first embodiment, the configuration is such that the surface of the motor 17 facing the car 3 is located above the lower ends of the speed reducer 15 and the traction sheave 16, but the present invention is not limited to the moss. The surface of the motor 17 that faces the lower gear may be located above the lower end of the reduction gear 15 or the traction sheave 16.

[0028]

As described above, in the elevator according to the first aspect of the present invention, when the car and the hoist are projected vertically on a horizontal plane, the reduction gear and the traction sheave are moved outside the projection area of the car. Are placed in the projection area of the car, respectively, and the surface facing the car and the motor is located above the lower end of at least one of the reduction gear and the traction sheave, so the limited hoistway area However, the floor area of the car can be increased, and the overhead size can be reduced.

In the elevator according to the second aspect of the present invention, the position of the uppermost portion of the motor is the same as or higher than the uppermost portion of the other portion of the hoist, so that the overhead size is efficiently reduced. be able to.

In the elevator according to the third aspect of the present invention, the hoist mounting base on which the speed reducer is mounted is fixed to the upper end of the weight guide rail, so that the hoist is effectively utilized by utilizing the upper space in the hoistway. Machine can be arranged.

In the elevator according to the fourth aspect of the present invention, since the fixed arm is fixed between the speed reducer and the side wall of the hoistway, it is possible to prevent the hoist from falling over due to the load applied to the traction sheave.

In the elevator according to the fifth aspect of the present invention, since the fixed arm is fixed between the speed reducer and the car guide rail, it is possible to prevent the hoist from falling over due to the load applied to the traction sheave.

[Brief description of the drawings]

FIG. 1 is a side view showing an elevator according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the elevator of FIG.

FIG. 3 is a side view showing an elevator according to a second embodiment of the present invention.

FIG. 4 is a plan view showing the elevator of FIG. 3;

FIG. 5 is a side view showing an example of a conventional elevator.

[Explanation of symbols]

1 hoistway, 1a side wall, 2 car guide rail, 3
Basket, 9 weight guide rails, 10 counterweights, 13
Hoist mounting stand, 14 Hoist, 15 Reducer, 16 Traction sheave, 17 Motor, 18, 31 Fixed arm, 19 Rope.

Continuation of front page (72) Inventor Naoyuki Maruyama 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F-term (reference) 3F305 BA02

Claims (5)

[Claims] 1. A hoistway, a car and a counterweight alternately raised and lowered in the hoistway, a rope for suspending the car and the counterweight in the hoistway, and a traction sheave around which the rope is wound And a motor for rotating the traction sheave, and a speed reducer connected between the traction sheave and the motor, provided at an upper part in the hoistway, via the rope A hoisting machine for raising and lowering the car and the counterweight is provided.When the car and the hoisting machine are vertically projected on a horizontal surface, the speed reducer and the traction sheave are outside the projection area of the car, A part of the motor is disposed in the projection area of the car, and the surface of the motor facing the car is at least one of the speed reducer and the traction sheave. Elevator, characterized in that it is positioned higher than the one of the lower end or Re. 2. The elevator according to claim 1, wherein the uppermost position of the motor is at the same height as or higher than the uppermost portion of another portion of the hoist. 3. A pair of weight guide rails provided in a hoistway, for guiding the lifting and lowering of a counterweight, and a hoisting machine mounting base fixed to the upper ends of these weight guide rails and mounted with a speed reducer. The elevator according to claim 1, wherein the elevator is provided. 4. The elevator according to claim 3, further comprising a fixed arm fixed between the speed reducer and a side wall of the hoistway. 5. A vehicle according to claim 1, further comprising a pair of car guide rails provided in the hoistway for guiding the car up and down, and a fixed arm fixed between the speed reducer and the car guide rail. The elevator according to claim 3, wherein