JP2000255941A - Balance weight for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rescue passengers in a car stopping at the top of a hoist way in an elevator where a winding machine is not installed on a rooftop machine room, but a lower neighborhood of the top of the hoist way. SOLUTION: A balance weight comprises a frame body of the balance weight divided in vertical direction by a partition plate 19, a second sub weight 20 loaded in an internal space of the frame body lower than the partition plate 19 and divided into at least three parts in the direction of vertical frames 11, 12, and a weight cover mounted on the frame body to cover the second sub weight 20 in the internal space of the frame body lower than the partition plate 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a counterweight of an elevator in which a car is connected to a car via a hoist by a rope.

[0002]

2. Description of the Related Art Generally, a rope type elevator in which a car and a counterweight are connected by a rope and lifted up and down in a slidable manner is provided by a hoist that transmits a driving force to the rope. The structure was installed in a rooftop machine room formed above the road top. However, in recent years, the roof machine room has been eliminated, and the hoisting machine and the control panel have been installed in the hoistway for the purpose of avoiding the sunshine problem and reducing the driving strength of the building where the elevator is installed. Rooftop machine roomless elevators tend to be the mainstream of the rope elevators.

An example of the structure of this rooftop machine room-less elevator will be briefly described with reference to FIG. FIG. 5 is a vertical sectional view of a hoistway showing the entire configuration of a rooftop machine roomless elevator to which the present invention is applied. In the figure, a rope 1 has one end attached to a hoistway 2 top 2a, a car pulley 3a provided at the bottom of a car 3, a hoisting machine 4 installed at the hoistway top 2a, and a counterweight. The other end is connected to the top 2a of the hoistway 2 via the counter pulley 5a provided on the upper part of the shaft 5.
Roped to be mounted on. The control panel 6 for controlling the elevation of the elevator is installed at the height of the landing floor 7 on the top floor. The buffers 8a and 8b set in the pits 2b respectively store the cars 3
Further, the impact force caused by the collision of the counterweight 5 with the pit 2b is reduced.

An example of this type of elevator without a rooftop machine room is disclosed in Japanese Patent No. 2593288.

Incidentally, in the elevator having the above-mentioned rooftop machine room, there is a possibility that the car 3 stops near the hoistway top 2a for some reason and passengers are trapped in the car 3 in some cases. . At this time, if the number of passengers in the car is less than half of the capacity, in a conventional elevator with a rooftop machine room as a passenger rescue operation, the elevator is manually mechanically wound using a special jig in the rooftop machine room. By releasing the brakes of the upper machine and rotating the hoist manually, the car was lowered to rescue the passengers in the car from the top floor landing.

[0006]

However, the above-described conventional passenger rescue method cannot be applied to an elevator without a rooftop machine room. That is, in an elevator without a rooftop machine room, since the hoisting machine 4 is installed on the hoistway top 2a, the brake mechanism of the hoisting machine 4 cannot be released. Alternatively, even if it can be opened, the hoisting machine 4 cannot be manually rotated, and it is difficult to rescue the passengers.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a hoisting machine in which no hoisting machine is installed in a rooftop machine room and an elevator set near the hoistway top. It is an object of the present invention to provide an elevator capable of rescuing passengers in a stopped car.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a car, a counterweight connected to the car and a rope, and a top of a hoistway on which the car moves up and down. An elevator having a hoisting machine that is provided near the lower side and transmits a driving force to the rope to raise and lower the car and the counterweight in a hanging manner, wherein the counterweight is provided to face the horizontal direction. And a pair of substantially C-shaped vertical frames having a vertical direction as a long direction,
An upper frame connected to the upper portion of the pair of vertical frames and both ends thereof, a frame body including a lower portion of the pair of the vertical frames and a lower frame connected to both ends thereof, and a vertical frame of the vertical frame. A dividing plate provided so as to connect the vertical frames at an intermediate portion, a first sub-weight loaded in a space inside a frame formed between the dividing plate and the upper frame, and the dividing plate A second sub-weight loaded in a space inside the frame formed between the frame and the frame and divided into at least three in the direction between the vertical frames, and a frame loaded with the second sub-weight And a weight cover attached to the frame so as to cover the internal space.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 5 are views showing an embodiment of an elevator counter.

The construction of the elevator to which the counterweight according to the present invention is applied is the same as that of the above-mentioned elevator without a rooftop machine room, so that the description is omitted here.

First, a counterweight according to the present invention will be described with reference to FIGS. FIG. 1 is a front view of a counterweight according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a frame of the counterweight of the present invention in a state where no subweight is loaded. It is a perspective view of a body structure.

Referring to FIGS. 1 to 3, the counterweight is provided in a pair of substantially C-shaped vertical frames 11 and 12 which are provided to face each other in the horizontal direction and have a long vertical direction.
And a frame body having an upper frame 13 connected to upper portions of the pair of vertical frames and both ends thereof, and a lower frame 14 connected to lower portions of the pair of vertical frames 11 and 12 and both ends thereof. Frame 11,
At a vertically intermediate portion of the vertical frame 12, the vertical frame 11 is loaded in a space inside a frame formed between the vertical frame 11 and the upper frame 13, and is provided between the vertical frame 11 and the upper frame 13. A second sub-weight 22 which is stacked in a space inside a frame formed between the dividing plate 19 and the frame 14 and is formed in at least three directions in the vertical frames 11 and 12 directions. And a weight cover 21 attached to the frame so as to cover the internal space of the frame on which the second sub-weight 20 is loaded. However, the total weight of the second sub-weight 20 is more than half of the total weight of the counterweight.

Guides 15 for engaging with counterweight guide rails are provided at the upper and lower ends of the vertical frames 11 and 12.
a and 15b are attached, a suspension plate 17 is fixed to the upper frame 13 and the rope 1 is connected via a thimble rod 18.

The weight cover 21 is provided with holes c provided in the vertical frames 11 and 12 so as to cover the internal space of the frame body on which the second sub-weight 20 is stacked.
1 is fixed by fixing it to a hole d provided in the device 1 with a bolt and a nut.

With this structure of the counterweight, the car 3 stops on the top 2a of the hoistway, and even if the number of passengers in the car 3 is less than half of the capacity, The worker removes the weight cover 21 at the pit and
By removing the center weight of the divided second subweight 20 and then removing the subweights on both sides, the counterweight 5 is made lighter than the car 3 and the brake is released by releasing the brake. The car 3 is lowered and passengers can be rescued.

Hereinafter, another embodiment of the counterweight according to the present invention will be described with reference to FIG.

FIG. 4 shows that the first sub-weight 22 of the counterweight is divided at least into three in the vertical frame direction so as to cover the inner space of the frame on which the divided first sub-weights 23 are loaded. The frame has a structure to attach a weight cover. Thus, the gap L at the upper part of the weight required for the sub-weight loading operation can be made smaller than when the conventional non-divided sub-weight is loaded, so that the weight-efficient elevator capable of efficiently loading the weights. Can obtain a counterweight.

[0018]

According to the present invention, it is possible to rescue passengers in a car stopped at the top of a hoistway even in an elevator installed below and below the top of a hoistway without installing a hoist in the rooftop machine room. Becomes

[Brief description of the drawings]

FIG. 1 is a front view of a counterweight according to an embodiment of the present invention.

FIG. 2 is a side view of a counterweight according to an embodiment of the present invention.

FIG. 3 is a perspective view of the frame structure of the embodiment of the present invention in a state where a subweight of a counterweight is not loaded.

FIG. 4 is a front view of a counterweight according to another embodiment of the present invention.

FIG. 5 is a schematic sectional view showing a hoistway of an elevator without a rooftop machine room.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main rope 2a Top of hoistway 3 Riding car 4 Hoisting machine 5 Counterweight 11 Vertical frame 12 Vertical frame 13 Upper frame 14 Lower frame 19 Dividing plate 20 Second sub weight 21 Weight cover 22 First sub weight

Claims (1)

[Claims] 1. A riding car, a counterweight connected via a rope with the riding car, and a lower portion of a hoistway above and below which the car rises and descends, and transmits driving force to the rope. In an elevator having a hoist that raises and lowers the car and the counterweight in a hanging manner, the counterweight is provided to face the horizontal direction, and has a substantially C-shape in which the vertical direction is a long direction. A pair of vertical frames, an upper frame connected at upper and lower ends of the pair of vertical frames, and a frame body including a lower frame connected to lower portions of the pair of vertical frames and both ends thereof, A split plate provided to connect the vertical frames at a vertical intermediate portion of the vertical frame, and a first sub-stacked in a space inside a frame formed between the split plate and the upper frame. Weight, formed between the dividing plate and the frame A second sub-weight which is loaded in a space inside the frame and is divided into at least three in the direction between the vertical frames, and a weight which is attached to the frame so as to cover the space inside the frame where the second sub-weight is loaded A counterweight for an elevator, comprising a cover and a cover.