JP2006151644A - Elevator equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an elevator apparatus capable of reducing a hoistway plane size, reducing the number of parts, and shortening a rail installation period.
SOLUTION: In an elevator apparatus in which two cars 3a and 3b and two counterweights 4a and 4b are arranged in one hoistway 1, the counterweight 4a with respect to the lift amount of the cars 3a and 3b. , 4b and suspension weights 8a, 8b are installed on the counterweights 4a, 4b so that the lifting / lowering amount of the car 4a, 4b is halved, and the ropes 7a, 7b whose one ends are fixed to the suspension points of the cars 3a, 3b , 5b, sorase wheels 6a, 6b and the counterweight side suspension wheels 8a, 8b, and the other end is fixed to the suspension point at the top of the hoistway.
[Selection] Figure 1

Description

  The present invention relates to a two-unit elevator type elevator apparatus in which two cars are arranged in one hoistway.

In general, two elevators require a hoistway plane on which two devices are installed. Therefore, by opening and closing the doors of one elevator and the other elevator by shifting them back and forth. Two elevators with reduced hoistway plane dimensions have been proposed in the past, and by integrating two rails on the counterweight side, it is possible to reduce the number of parts and shorten the rail installation period. There are some (see, for example, Patent Document 1).
Conventionally, there are two elevator cars that share one counterweight (for example, see Patent Document 2).

Japanese Patent Laid-Open No. 2004-43091 JP-A-3-13484

  However, in the conventional elevator apparatus as described in the above publication etc., because the hoistway plane dimensions are reduced by shifting the arrangement of the open / close door back and forth, one landing is retracted from the other landing Due to the structure, there were problems such as problems in the design of the hall and the layout of the hall operation panel.

  The present invention has been made to solve the above-described problems. The hoistway plane dimensions can be reduced, the number of parts can be reduced, and the rail installation period can be shortened without changing the design of the hall. An object of the present invention is to provide an elevator device that can be used.

  In the elevator apparatus according to the present invention, in an elevator apparatus in which two cars and two counterweights are arranged in one hoistway, the lift of the counterweight is halved with respect to the lift of the car. In this way, a suspension car is installed on the counterweight, and the rope, one end of which is fixed to the suspension point of the car, is wrapped around the driver, the solar wheel and the suspension car on the counterweight side, and the other end is suspended at the top of the hoistway. It is fixed to the point.

  According to the present invention, the lifting / lowering amount of the counterweight is halved with respect to the lifting / lowering amount of the car, thereby reducing the hoistway plane size, reducing the number of parts, and shortening the rail installation period. There is.

An embodiment of the present invention will be described below with reference to FIGS.
Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing the configuration of an elevator apparatus according to Embodiment 1 of the present invention. FIG. 1 (a) is an overall configuration diagram, and FIG. 1 (b) is a diagram showing a partial configuration. is there.
In FIG. 1A, a machine room 2 is provided in the upper part of the hoistway 1, and cars 3a and 3b are arranged in the hoistway 1 along the car side rails 9a and 9b, respectively, and an upper counterweight 4a. And a lower counterweight 4b are arranged up and down along the counterweight-side rail 10, and the car 3a is connected to the upper counterweight side by a rope 7a via a driving machine 5a and a ramp wheel 6a arranged in the machine room 2. Similarly, the car 3b is attached to the lower counterweight-side suspension car 8b by the rope 7b via the driving machine 5b and the wheel 6b arranged in the machine room 2 and attached to the suspension car 8a.

  The installation position of the lower counterweight side suspension wheel 8b may be either the upper part or the lower part of the lower counterweight element 4b. In FIG. 1 (a), the installation position of the lower counterweight side suspension truck 8b is Although it is a case where it is provided in the upper part of the lower counterweight 4b, as shown in FIG.1 (b), you may make it provide in the lower part of the lower counterweight 4b. Further, here, the car 3a is referred to as A machine, and the car 3b is referred to as B machine.

FIG. 2 is a diagram showing a roping (weight side fall) state on the Unit A side, FIG. 3 is a diagram showing a roping (weight side fall) state on the Unit B side, and FIG. FIG. 5 is a view showing a roping (falling after weight) state on the side of Unit B.
As shown in FIGS. 2 and 4, the No. A machine has the end of the rope 7 a fixed to the hanging point of the car 3 a, the driving machine 5 a disposed in the machine room 2, the slewing wheel 6 a, the upper counterweight side The other end is fixed to the hoistway top through the suspension wheel 8a.

  As shown in FIGS. 3 and 5, the No. B machine fixes the end of the rope 7 b to the hanging point of the car 3 b, and the driving machine 5 b, the slewing wheel 6 b, the upper counterweight placed in the machine room 2. In order not to interfere with 4a, it is constituted by passing the lower counterweight side suspension wheel 8b and fixing the other end to the hoistway top.

  Here, the cages 3a and 3b are suspended at the suspension points, while the lifting weights 4a and 4b are suspended by suspending the ropes 7a and 7b on the suspension wheels 8a and 8b, respectively, so that the elevators 3a and 3b can be lifted and lowered. In comparison, the lifting and lowering amounts of the counterweights 4a and 4b are halved. In other words, the balance weight stroke is actually halved at 2: 1, but the total height of the balance weight must be taken into consideration, so the width of the balance weight is widened so that the total height of the balance weight is 1 / 2 or less is necessary. Therefore, since the upper and lower counterweights 4a and 4b can divide the lifting stroke into the upper half and the lower half, both can be arranged on the same projection plane and the rail can be shared.

  Thus, in this embodiment, a suspension car is installed on the counterweight so that the lift of the counterweight is halved with respect to the lift of the car, and the rope is driven from the suspension point of the car. Wrapping machine, sorceress car, counterweight side suspension wheel and rope, the other end of the rope was fixed to the suspension point at the top of the hoistway, that is, the car was essentially 1: 1 roping and the counterweight was The combination of 2: 1 roping and installation of the counterweight on the same projection plane reduces the hoistway plane dimensions, reduces the number of parts, and changes the rail installation period without changing the design of the landing Can be shortened.

Embodiment 2. FIG.
In the first embodiment, a case has been described in which the machine room 2 is provided above the hoistway 1 and the driving machines 5a and 5b and the sorace wheels 6a and 6b are installed in the machine room 2. The machine rooms 2 may be deleted by disposing the 5a and 5b and the wheel 6a and 6b in the hoistway 1. Thereby, the structure of the elevator apparatus can be reduced in size and cost.

Embodiment 3 FIG.
Moreover, as shown in FIG. 6, you may make it the structure which provides the through-hole 11 in the upper counterweight 4a, and lets the rope 7b hung on the lower counterweight 4b pass there. By so doing, the lower counterweight side suspension wheel 8b can be disposed so as to overlap the lower counterweight 4b, so that the hoistway plane dimensions can be further reduced, and the structure of the elevator apparatus can be reduced in size and cost. Can contribute.

Embodiment 4 FIG.
Further, when the car 3a comes to the top floor and the car 3b comes to the bottom floor, the upper counterweight 4a and the lower counterweight 4b come closest to each other, but the counterweights 4a, 4b are not to interfere with each other. The height of the weight may be reduced as much as possible, and the weight width may be increased to secure the necessary weight. Thereby, interference of the upper counterweight 4a and the lower counterweight 4b is relieved, and the operation | movement of an elevator apparatus can be smoothed.

Embodiment 5. FIG.
In addition, assuming that the upper counterweight 4a and the lower counterweight 4b interfere with each other, for example, as shown in FIG. 7, a shock absorber 12 is installed on the upper portion of the lower counterweight 4b. You may arrange | position the apparatus which relieves an impact between both. As a result, damage due to interference between the upper counterweight 4a and the lower counterweight 4b can be prevented and the operation of the elevator apparatus can be facilitated.

It is the schematic which shows the structure of the elevator apparatus by Embodiment 1 of this invention. It is a figure which shows the roping (weight side fall) state by the side of Unit A in the elevator apparatus by Embodiment 1 of this invention. It is a figure which shows the roping (weight side fall) state of the No. B side in the elevator apparatus by Embodiment 1 of this invention. It is a figure which shows the roping (falling after weighting) state by the side of Unit A in the elevator apparatus by Embodiment 1 of this invention. It is a figure which shows the roping (falling after weighting) state by the side of Unit B in the elevator apparatus by Embodiment 1 of this invention. It is a figure which shows the example which installed the through-hole which lets a rope pass to the upper counterweight in the elevator apparatus by Embodiment 3 of this invention. It is a figure which shows the example which installed the shock absorber in the lower side counterweight upper part in the elevator apparatus by Embodiment 5 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Hoistway, 2 Machine room, 3a, 3b Car, 4a Upper counterweight, 4b Lower counterweight, 5a, 5b Drive machine, 6a, 6b Solase wheel, 7a, 7b Rope, 8a Upper counterweight side suspension car , 8b Lower counterweight side suspension wheel, 9a, 9b Cage side rail, 10 Counterweight side rail, 11 Through hole, 12 Shock absorber.

Claims (5)

In an elevator apparatus in which two cars and two counterweights are arranged in one hoistway,
A suspension car is installed on the counterweight so that the lift of the counterweight is halved with respect to the lift of the car, and a rope having one end fixed to the suspension point of the car is connected to the driving machine. An elevator apparatus characterized in that it is wound around a sorase wheel and a suspension wheel on the counterweight side, and the other end is fixed to a suspension point at the top of the hoistway.   The elevator apparatus according to claim 1, wherein the two counterweights are arranged so that a lifting stroke is at an upper part and a lower part of a hoistway, and the rails on the counterweight side are shared.   3. The elevator apparatus according to claim 1, wherein a through hole through which a rope wound around a suspension wheel on the lower counterweight is provided in the upper counterweight among the two counterweights. 4.   The elevator apparatus according to any one of claims 1 to 3, further comprising a shock absorber that cushions an impact between the two counterweights.   The elevator apparatus according to any one of claims 1 to 4, wherein the driving machine and the wheel are arranged in a hoistway.

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