JPH1160117A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator dispensing with a conventional machine room. SOLUTION: A car 1 and a balance weight 2 are supported by car under pulleys 4, 5 installed on the lower side of the car 1 through a main rope 3 of an elevator, and the balance weight 2 is supported by deflection pulleys 6, 7. A hoist 9 provided with a sheave 8 on which the main rope 3 is wound is installed near the top floor of a hoistway of the elevator, and the arrangement of the hoist 9 on the flat surface of the hoistway is above the balance weight 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable car along a guide rail of an elevator, a counterweight movable along a counterweight guide rail, and a main rope suspending the car and the counterweight. And a hoisting device having a sheave driven by the hoist and engaging a main rope.

[0002]

2. Description of the Related Art Conventionally, in a conventional rope-type traction elevator, a car and a counterweight which rises and lowers along a guide rail are installed in an elevator hoistway, one end of which is connected to the above-mentioned car and the other end thereof. Has a main rope connected to the counterweight, and an intermediate portion of the main rope is wound around a sheave of a hoist installed in a machine room located directly above the hoistway, and The car and the counterweight move up and down depending on the machine. Also, in the conventional rope type elevator,
As an elevator device that eliminates the machine room at the top of the hoistway, a side-mount type with the hoist installed in the machine room next to the hoistway, and a basement type with the machine room near the lower part of the hoistway, etc. There is. In each case, the machine room that had to be reserved for the installation of the hoist occupied a considerable part of the building space.

[0003] The above-mentioned counterweight is suspended on a sheave of a hoisting machine in a sagger-like manner with respect to a car, and the weight of the car plus about 50% of a rated load is added thereto. The counterweight was moved up and down in the direction opposite to the direction in which the car was moved up and down and had the same ascent and descent stroke as the car.

[0004]

An object of the conventional rope type traction elevator is to provide a machine room space for installing a hoist, and this machine room not only hinders effective use of the building space but also has an external appearance. It is also the above disadvantage.

Further, in a rope type traction elevator, a counterweight installed in a hoistway is indispensable for securing a frictional force between a main rope and a sheave, but a space for raising and lowering the counterweight. Must be provided in the hoistway.

[0006]

In the rope traction elevator according to the present invention, the hoist of the elevator is installed near the top floor of the hoistway, and the hoisting machine is arranged on the hoistway plane as described above. Means are located above the counterweight so that when the car descends to the lowest floor, the highest point of the counterweight is below the installation position of the hoist.

[0007] According to the invention, the car and the counterweight move along respective guide rails. The hoist includes a main rope that is hung on a sheave of a hoist and drives the car and the counterweight, and the hoist is installed in a hoistway of an elevator. The hoist is installed near the top floor of the hoistway, and the layout of the hoist on the hoistway plane is located above the counterweight, and the above-described car is lowered to the lowest floor. The highest point of the counterweight is configured to be lower than the installation position of the hoist.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a schematic view of a rope type traction elevator according to the present invention. The car 1 and the counterweight 2 are connected to the car pulley 4, which is installed below the car 1 by the main rope 3 of the elevator.
5 and the counterweight 2 is supported by deflecting pulleys 6,7. A hoist 9 having a sheave 8 around which the main rope 3 is wound is installed near the top floor of the hoistway of the elevator, and the arrangement of the hoist 9 on the hoistway plane is above the counterweight 2. Are located in

The car 1 and the counterweight 2 move up and down along the car guide rail 10 and the counterweight guide rail 11 in the hoistway.

The main cable 3 of the elevator is laid as follows. That is, one end of the main rope is fixed to the fixing member 12 via the compression spring 17 near the top of the hoistway.
The main rope 3 going downward from the fixing member 12 is a pulley 4 below the car.
And 5 are wound around the sheave 8 of the hoisting machine 9. The main rope 3 going downward from the sheave 8 travels upward again via the diverting pulley 6 fixed to the counterweight 2, and is diverted by the fixing member 13 supporting the hoisting machine 9. 14, via the turning pulley 7, which is fixed to the counterweight 2 again.
3 via a compression spring 18. Here, the compression springs 17 and 18 are used to reduce the vibration of the elevator car 1 and the counterweight 2 and to prevent these vibrations from propagating to the building.

Since the main rope 3 of the elevator is arranged as described above, the lifting / lowering speed of the counterweight 2 is 1/2 with respect to the lifting / lowering speed of the car 1, and at the same time, the lifting / lowering process of the counterweight 2 is in the car.昇 of the ascending / descending stroke. And when the car 1 is located on the top floor, the counterweight 2 is arranged so as to be at the bottom of the hoistway. Therefore, even when the car 1 is located on the lowest floor, the counterweight 2 can be used. Since only half of the elevator stroke of the car is lifted, the upper part of the counterweight 2 is a space, and the hoisting machine 9, the turning pulley 14, the support member 13 and the like are arranged using this space. ing. Therefore,
This hoisting machine 9 does not need to be a thin special hoisting machine,
As in the related art, a machine having the same structure as a hoist installed in a machine room may be used.

FIG. 2 is a view in which an elevator according to the present invention is arranged in a hoistway 15 of an elevator. As shown in FIG. 2, the counterweight 2 is located below the hoisting machine 8 in a plane.

FIG. 3 is a side view showing the arrangement of the elevator according to the present invention in the elevator shaft 15. The car 1 and the counterweight 2 are suspended in the manner shown. As shown in FIG. 3, since the main ropes 3 are arranged via the lower pulleys 4 and 5, even if the car 1 is located on the uppermost floor, the lower pulleys 4 and 5 are on the floor F of the uppermost floor.
Since the hoisting machine 9 and the turning pulley 14 are not necessarily at the top of the hoistway, but are arranged slightly above the floor F on the top floor, the main rope can be stretched via the pulley 5 under the car. . Therefore, the visual inspection of the hoisting machine 8 and the turning pulley 14 can be performed only by opening the landing side door. The function and structure of each part have been described above with reference to FIG.

(Embodiment 2) FIGS. 4 and 5 show Embodiment 2 of the present invention. In this embodiment, the fixing member 13a is installed slightly above the upper limit of the lifting weight 2 and the deflecting pulley 14 and the end of the main rope 3 and the compression spring 18 are fixed to the fixing member 13a. Therefore, in FIG. 1 or FIG.
4 and the compression spring 18 have moved to the lower fixing member 13a, so that the portion occupied by the turning pulley 14 and the compression spring 18 becomes a space. If necessary, there is an advantage that the elevator control device 16 and related devices (not shown) can be installed in the above space. In the present embodiment, the fixing member 13a must be provided separately from the fixing member 13, but since the turning pulley 14 and the compression spring 18 are provided below, the length of the main rope 3 can be reduced. Except as described above, the present embodiment has basically the same structure and function as those of FIGS. 1, 2 and 3.

(Embodiment 3) FIGS. 6 and 7 show Embodiment 3 of the present invention. Here, except for the laying of the main rope 3 and the turning pulley of the counterweight 2, they are basically the same as those of the first and second embodiments, so that the description thereof is omitted. 6 and 7, one end of the main rope is attached to the fixed member 12 near the top of the hoistway by the compression spring 1.
7 are fixed. The main rope extending downward from the fixing member 12 is wound around the sheave 8 of the hoisting machine 9 via the pulleys 4 and 5 under the car. The main rope 3 going downward from the sheave 8 travels upward again via the diverting pulley 6 fixed to the counterweight 2, and is diverted by the fixing member 13 supporting the hoisting machine 9. 14, and is fixed to the counterweight 2 via the compression spring 18 again. That is, the turning pulley fixed to the counterweight 2 is one turning pulley.

Since the elevator main ropes 3 are arranged as described above, the lifting / lowering speed of the counterweight 2 is 2/3 with respect to the lifting / lowering speed of the car 1, and at the same time, the lifting / lowering process of the counterweight 2 is the car. 2/3 of the ascending / descending stroke. When car 1 is located on the top floor, counterweight 2
Is located at the bottom of the hoistway, so when the car 1 is located on the lowest floor, the counterweight 2
Since only 2/3 of the ascending / descending stroke of the car is lifted, the upper portion of the counterweight 2 is a space, and the hoisting machine 9, the turning pulley 14, the support member 13 and the like are arranged in this space. ing. Therefore, also in this case, the hoisting machine 9 does not need to be a thin special hoisting machine, but may have the same structure as a conventional hoisting machine provided with a machine room and installed in the machine room.

In this embodiment, since there is only one turning pulley 6 fixed to the counterweight 2, the manufacturing cost can be reduced accordingly. Although not shown, also in this embodiment, as in the second embodiment, a support member (apart from the support member 13) for fixing the compression spring 18 and the diverting pulley 14 is balanced, and the upper limit of the lifting and lowering of the weight 2 is set. It may be arranged slightly above.

[0019]

The present invention has the following effects because it is configured as described above.

A movable car along the guide rail of the elevator, a counterweight movable along the counterweight guide rail, and a main rope that is hung on the sheave of the hoist to drive the car and the counterweight. Wherein the hoist is installed in the hoistway of the elevator, wherein the hoist is installed near the top floor of the hoistway, and the hoisting machine is arranged on the hoistway plane Is located above the counterweight, and when the car is lowered to the lowest floor, the highest point of the counterweight is configured to be lower than the installation position of the hoist. Since the space above the upper limit of the lifting weight of the counterweight is a space, the hoisting machine, the turning pulley, the control panel and the like can be easily arranged. In addition, since the main ropes are laid under the car through the lower car pulley, the above hoisting machine, turning pulley, and control panel can be installed slightly above the top floor of the elevator. In addition, the overhead of the hoistway can be reduced, and the inspection and adjustment of the equipment can be easily performed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an elevator according to a first embodiment of the present invention.

FIG. 2 is a schematic plan view in which FIG. 1 is arranged in a hoistway of an elevator.

FIG. 3 is a schematic side view in which FIG. 1 is arranged in a hoistway of an elevator.

FIG. 4 is a schematic diagram of an elevator according to a second embodiment of the present invention.

FIG. 5 is a schematic plan view in which FIG. 4 is arranged in a hoistway of an elevator.

FIG. 6 is a schematic diagram of an elevator according to a third embodiment of the present invention.

FIG. 7 is a schematic plan view in which FIG. 6 is arranged in a hoistway of an elevator.

[Explanation of symbols]

1 ... elevator car 2 ... counterweight 3
... main rope of the elevator, 4,5 ... pulley under the car under the car, 6,7 ... turning pulley on the counterweight, 8
... pulley, 9 ... hoisting machine, 10 ... car guide rail, 1
DESCRIPTION OF SYMBOLS 1 ... Guide rail of counterweight, 12, 13 ... Fixed member, 14 ... Turning pulley on a fixed member, 15 ... Hoistway,
16: control panel, 17, 18: compression spring.

Claims (1)

[Claims] 1. A movable car along a guide rail of an elevator, a movable counterweight along a counterweight guide rail, and a car and a counterweight driven by a sheave of a hoist. A hoist having a main rope, wherein the hoist is installed in a hoistway of an elevator, wherein the hoist is installed near a top floor of a hoistway, and the hoistway of the hoist The arrangement on the plane is located above the elevating extension of the counterweight, and the highest reaching point of the counterweight is lower than the installation position of the hoist when the car descends to the lowest floor. An elevator characterized by having been made.