JPH11228054A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save the space of a hoistway area by providing a second rope having a tip part connected to the end part of a car beam, a middle part wound on a sheave and a base end part connected to a driving source. SOLUTION: The tip part of a first rope 9 is connected to one end part of a car beam 3, a middle part is wound on first and second sheaves 22 and 23, and a base end part is connected to a hoist 8 in the other end side of the car beam 3. The tip part of a second rope 10 is connected to the other end part of the car beam 3, a middle part is wound on a third sheave 24 and a base end part is connected to the hoist 8. Here, since the third sheave 24 is arranged such that its rotational axis is perpendicular to a hoistway wall opposite the other end part of the car beam 3, the second sheave 23 for the first rope 9 is arranged almost directly above a car 2. Thus, the space of a hoistway 1 is saved, and space in a cage 4 is increased while keeping the same side of the space of the hoistway 1.

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 car is suspended in a hoistway via a sheave (turning wheel) provided above the hoistway.

[0002]

2. Description of the Related Art FIG. 9 is a perspective view showing a conventional elevator apparatus disclosed in, for example, Japanese Utility Model Laid-Open Publication No. 1-1115672, FIG. 10 is a plan view showing the elevator apparatus shown in FIG. 9, and FIG. It is the side view seen from A direction. In the figure,
Reference numeral 1 denotes a hoistway, and 2 denotes a car that moves up and down in the hoistway 1. The car 2 has a car beam 3 and a car room 4 supported on the car beam 3.

[0005] 5 is a sheave beam fixed to the upper part of the hoistway 1, and 6 and 7 are first and second sheaves rotatably attached to the sheave beam 5, respectively. The rotation axes of the second sheaves 6 and 7 extend in parallel with each other.
8 is installed at the bottom of the hoistway 1 and is a hoisting machine of a winding drum type as a drive source for raising and lowering the car 2; Two sheaves 6,7
The first rope 10 whose base end is connected to the hoisting machine 8 at the other end side of the car beam 3 at the base end is connected to the other end of the car beam 3 at the tip end, Is a second rope that is wound around the second sheave 7 and whose base end is connected to the hoisting machine 8 at the other end of the car beam 3.

[0004] Reference numeral 11 denotes an emergency stop beam provided at a lower portion of the car 2, 12 denotes a shock absorber installed at the bottom of the hoistway 1, and 13 denotes a guide rail installed in the hoistway 1 to guide the car 2. It is.

[0005]

In the conventional roll-to-roller type elevator apparatus constructed as described above, as shown in FIG. 10, the second sheave 7 when the hoistway 1 is viewed from above. The hoistway 1 is arranged between the car 2 and the hoistway wall 1a, so that the hoistway 1 can be widened by the diameter of the second sheave 7,
Or, it was necessary to reduce the size of the car 2. Such an increase in the hoistway space is a problem in ordinary elevator devices, but is particularly serious in home elevators for single-family houses, which have been growing in demand in recent years.

Further, in the conventional elevator apparatus, since the second sheave 7 protrudes greatly from the side of the car 2,
When the maintenance work on the second sheave 7 is performed from above the car 2, it is necessary to install a scaffold or the like, and the workability has been reduced.

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 saving the hoistway area.

[0008]

An elevator apparatus according to the present invention has a car beam and a cab supported by the car beam. A drive source for raising and lowering the car, first and second sheaves spaced apart from each other above the car above the hoistway, and a tip connected to one end of the car beam,
A first rope having an intermediate portion wound around the first and second sheaves and a base end connected to a drive source at the other end of the car beam; and the other end of the car beam at the top of the hoistway. Placed above the part,
A third sheave having a rotating shaft extending in a direction perpendicular to the hoistway wall facing the other end of the car beam; a tip end connected to the other end of the car beam; And a second rope whose base end is connected to a drive source.

An elevator apparatus according to a second aspect of the present invention
The first and second sheaves are arranged so that the first rope crosses the upper side of the car diagonally, using a winding type hoisting machine installed at the bottom of the hoistway as a drive source. Is disposed above or near the hoisting machine.

[0010]

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 perspective view showing an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a plan view showing the elevator apparatus of FIG.

In the drawing, 1 is a hoistway, 2 is a car that moves up and down in the hoistway 1, and this car 2 has a car beam 3 and a car room 4 supported on the car beam 3. doing. Reference numerals 21a and 21b denote first and second sheave beams fixed to the upper portion of the hoistway 1, and the first sheave beam 21a extends along the frontage direction (the left-right direction in FIG. 2) along the second sheave beam. Sheave beam 21
b are arranged at right angles to each other along the depth direction (vertical direction in FIG. 2). 22 and 23 are first sheave beams 21a
First and second spaced apart from each other
Is a third sheave mounted on the second sheave beam 21b in a direction perpendicular to the first and second sheaves 22 and 23.

Reference numeral 8 denotes a hoisting machine of a winding drum type, which is installed at the bottom of the hoistway 1 and serves as a drive source for raising and lowering the car 2. Reference numeral 9 denotes a tip connected to one end of the car beam 3, 1st and 2nd
The first rope, which has a base end connected to the hoisting machine 8 at the other end side of the car beam 3,
Reference numeral 0 denotes a second rope having a leading end connected to the other end of the car beam 3, an intermediate part wound around the third sheave 24, and a base end connected to the hoisting machine 8.

Reference numeral 11 denotes an emergency stop beam provided at a lower portion of the car 2, 12 denotes a shock absorber installed at the bottom of the hoistway 1, and 13 denotes a guide rail installed in the hoistway 1 to guide the car 2. It is.

In such an elevator apparatus, the third sheave 24 is provided for the second rope 10 and the third sheave 2
4, the second sheave 23 for the first rope 9 is mounted on the car 2 so that its rotation axis is perpendicular to the hoistway wall 1a facing the other end of the car beam 3. The hoistway 1 can be disposed almost directly above, and the space of the hoistway 1 can be saved. For example, in the case of FIG. 2, the dimension in the frontage direction of the hoistway 1 could be reduced by 100 mm or more. Also,
The space in the car room 4 can be increased by making the space of the hoistway 1 the same. Further, maintenance work on the sheaves 22, 23, 24 on the car 2 can be facilitated.

Embodiment 2 In the above example, the car beam 3 extends in the frontage direction. However, as shown in FIG. 3, for example, the present invention can be applied to a car beam 3 extending in the depth direction. The dimension of the hoistway 1 in the depth direction can be reduced.

Embodiment 3 Next, FIG. 4 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention.
In this example, the first sheave beam 21c that supports the first and second sheaves 22 and 23 is arranged obliquely with respect to the frontage direction. Thus, the first and second sheaves 22, 23
Is arranged so that the first rope 9 crosses obliquely above the car 2, and the second sheave 23 is arranged above or near the hoisting machine 8.

Here, the entry angle θ of the first rope 9 into the rope groove of the second sheave 23 (FIG. 5) or the entry angle of the first rope 9 into the winding drum of the hoisting machine 8 is large. Then, a biting sound of the first rope 9 is generated, and the first rope 9 is easily damaged. Therefore, it is considered that the approach angle, that is, the so-called fleet angle θ is usually desirably 4 ° or less. However, as shown in FIG. 6, the hoisting machine 8 needs to be arranged so that the winding drum 8 a does not interfere with the emergency stop beam 11 when the car 2 descends to the position of the shock absorber 12.
There are restrictions on the installation position of the hoisting machine 8.

On the other hand, as shown in FIG. 4, by arranging the first sheave beam 21c obliquely, the second sheave 2
3 can be positioned almost directly above the hoisting machine 8, and the fleet angle can be reduced. Therefore, while reducing the space of the hoistway 1, generation of biting noise and
Damage to the first rope 9 can be prevented.

Embodiment 4 Note that, in the above example, the case where the car beam 3 extends in the frontage direction is shown. However, for example, as shown in FIG. The dimension of the hoistway 1 in the depth direction can be reduced.

Embodiment 5 Next, FIG. 8 is a perspective view showing an elevator apparatus according to Embodiment 5 of the present invention.
In the figure, 31 is a weight rail installed in the hoistway 1, 32 is a base to which the base ends of the first and second ropes 9 and 10 are connected, and the fishing rod moves up and down along the weight rail 31. The counterweight 33 is a secondary conductor installed in the hoistway 1 along the lifting / lowering process of the counterweight 32, and 34 is a secondary conductor 33.
A primary winding 35 mounted on the counterweight 32 so as to face the linear motor is a linear motor as a drive source having a primary winding 34 and a secondary conductor 33. Other configurations are the same as those of the first embodiment.

As described above, the linear motor 3 is used as a drive source.
The present invention can be applied to the elevator apparatus using the hoistway 5, and the hoistway 1 can be saved in space.

[0022]

As described above, in the elevator apparatus according to the first aspect of the present invention, the third sheave is provided with the third sheave for the second rope, and the rotation shaft of the third sheave has a car beam. The first and second sheaves for the first rope can be arranged almost directly above the car because they are arranged at right angles to the hoistway wall facing the other end. Space can be saved and the space in the car room can be expanded. Further, maintenance work on the sheave on the car can be facilitated.

The elevator apparatus according to the second aspect of the present invention uses, as a drive source, a winding type hoisting machine installed at the bottom of a hoistway, and a first rope so that a first rope obliquely crosses above a car. And since the second sheave is arranged, the second sheave can be brought close to just above the hoist, and thereby the fleet angle of the first rope can be reduced.

[Brief description of the drawings]

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

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

FIG. 3 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention.

FIG. 4 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention.

5 is an explanatory diagram showing a relationship between a first rope and a second sheave in FIG. 4;

6 is a side view showing a hoistway bottom of the elevator apparatus of FIG. 4;

FIG. 7 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention.

FIG. 8 is a perspective view showing an elevator apparatus according to Embodiment 5 of the present invention.

FIG. 9 is a perspective view showing an example of a conventional elevator device.

FIG. 10 is a plan view showing the elevator apparatus of FIG. 9;

FIG. 11 is a side view as seen from the AA direction of FIG. 10;

[Explanation of symbols]

1 hoistway, 1a hoistway wall, 2 cars, 3 cars beams,
4 cab, 8 hoist (drive source), 9 first rope, 10 second rope, 22 first sheave, 23 second sheave, 24 third sheave, 35 linear motor ( Drive source).

Claims (2)

[Claims] 1. A car beam, and a car room supported by the car beam, a car that moves up and down the hoistway, a drive source that is provided in the hoistway and moves the car up and down, First and second sheaves spaced apart from each other above the car above the hoistway; a leading end is connected to one end of the car beam; and an intermediate part is the first and second sheaves. A first rope wound around a sheave and having a base end connected to the drive source at the other end of the car beam; and disposed above the other end of the car beam above the hoistway. A third sheave whose rotation axis extends in a direction perpendicular to the hoistway wall facing the other end of the car beam; a tip end connected to the other end of the car beam; A middle rope wound around the third sheave, and a second rope connected at a base end to the drive source. Elevator apparatus characterized by. 2. The driving source is a hoisting machine of a hoisting type installed at the bottom of a hoistway, and the first and second sheaves are arranged such that a first rope obliquely crosses over a car. 2. The elevator apparatus according to claim 1, wherein the second sheave is disposed above or near the hoisting machine. 3.