WO2015011756A1 - Elevator device - Google Patents

Abstract

The present invention provides an elevator device that can decrease overhead measurements by securing a vertical travel space for a counterweight and decrease the pit depth and that can suppress making the front dimensions of an elevator shaft larger. In this elevator device, a counterweight (4) is disposed on the rear side of an elevator car (3) in the depth direction, a hoist (5) is disposed above the counterweight (4) at the top of the elevator shaft, and only a weight suspending car (21) is disposed between the hoist (5) and the counterweight (4).

Description

Elevator equipment

The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus in which a counterweight is arranged on the rear side in the depth direction of a car.

In elevator systems, due to architectural restrictions, etc., it is required to secure the entrance dimensions of the passenger car and reduce the entrance dimensions of the hoistway. The weight drop system that places the counterweight on the rear side in the depth direction of the car can reduce the size of the frontage of the hoistway, compared with the weight drop system that places the counterweight on the side in the car mouth direction. Further, from the viewpoint of flooding countermeasures, the top arrangement of the hoistway of the hoisting machine is more effective than the pit part arrangement of the hoisting machine. However, in the case of the weight drop method, the distance between the counterweight and the car suspension becomes longer, so that the roping configuration and the arrangement of the hoisting machine and the return wheel become complicated.

In view of this situation, the hoisting machine is arranged above the counterweight, the weight-side return wheel is arranged between the hoisting machine and the counterweight, and the car-side return car is arranged on the side of the car in the front direction. In addition, there has been proposed a conventional weight drop-off type elevator apparatus (for example, see Patent Document 1).

Also, the hoisting machine is arranged above the car, the weight-side return wheel is arranged above the guide rail for the hoisting machine-side weight, and the car-side return car is arranged on the side of the car front direction. There has been proposed an elevator apparatus of a post-weight dropping type (for example, see Patent Document 2).

In addition, the hoisting machine is placed on the opposite side of the car guide rail and the weight-side return wheel is placed above the hoisting machine-side weight guide rail, and the car-side return car is placed on the side of the car front. A conventional weight drop-off type elevator apparatus arranged in a section has been proposed (see, for example, Patent Document 3).

JP 2003-020176 A JP 2004-189346 A JP 2002-145555 A

However, in the conventional elevator apparatus described in Patent Document 1, the weight-side return wheel is disposed between the hoisting machine and the counterweight. Therefore, in order to secure the traveling space in the vertical direction of the counterweight, the dimension between the top floor level and the hoistway ceiling (overhead dimension) and the dimension between the bottom floor level and the bottom of the pit (pit depth) There was a problem of increasing the size.

Moreover, in the conventional elevator apparatus described in Patent Document 2, since the hoisting machine is arranged on the upper part of the car, there is a problem that the overhead dimension becomes large.

Furthermore, in the conventional elevator apparatus described in Patent Document 3, the problem that the overhead dimension becomes large or the pit depth becomes deep is solved, but there is a problem that the size of the entrance of the hoistway becomes large. .

The present invention has been made to solve such a problem, and it is possible to secure a traveling space in the vertical direction of the counterweight, to reduce the overhead dimension, to reduce the pit depth, and to form a frontage of the hoistway. It aims at obtaining the elevator apparatus which can suppress the increase in a dimension.

The elevator apparatus according to the present invention includes a pair of car suspension vehicles in which a counterweight is disposed on the rear side in the depth direction of the car and is spaced apart in the frontage direction and disposed on the upper or lower part of the car. A weight suspension vehicle disposed at the top of the weight, and the other side of the front direction of the vertical projection surface of the car and the corner on the rear side in the depth direction as viewed from above in the vertical direction, A pit part return wheel arranged in the pit part so as to protrude to the other side in the frontage direction of the vertical projection plane and the rear side in the depth direction, and the sheave as viewed from above in the vertical direction. And a hoisting machine disposed above the counterweight at the top of the hoistway so as to be positioned between the hoistway and the weight suspension car, as viewed from above in the vertical direction, On the other side, on the other side of the frontage direction So as to be positioned between the car suspension sheave and the pit portion return pulley, to match the axis frontage direction and a, and a top return pulley disposed in the hoistway top portion. One end of the main rope is fixed to one side in the front direction of the hoistway top and descends, is suspended by the pair of car suspension vehicles, rises from the other side in the front direction of the car, and returns to the top. Wrapped over the car, descended, hung over the pit section return car, ascended, wound around the sheave, descended, hung over the weight suspension car and raised, the other end of the hoistway It is fixed to the top.

According to the present invention, the elevator apparatus is a weight drop-off system in which a counterweight is disposed on the rear side in the depth direction of the car, and the hoisting machine is disposed above the counterweight. The dimensions can be reduced.
In addition, since the hoisting machine is disposed above the counterweight and only the hoisting wheel is disposed between the hoisting machine and the counterweight, without increasing the overhead dimension or increasing the pit depth, A traveling space in the vertical direction of the counterweight can be secured.

1 is a configuration diagram illustrating an elevator apparatus according to Embodiment 1 of the present invention. It is the schematic diagram which looked at the elevator apparatus which concerns on Embodiment 1 of this invention from upper direction. It is a pit part side view which shows the state which the car stopped to the lowest floor in the elevator apparatus which concerns on Embodiment 1 of this invention. It is a pit part side view which shows the state which the car pushed down in the elevator apparatus which concerns on Embodiment 1 of this invention. It is the schematic diagram which looked at the elevator apparatus which concerns on Embodiment 2 of this invention from upper direction. It is the schematic diagram which looked at the elevator apparatus which concerns on Embodiment 3 of this invention from upper direction. It is the schematic diagram which looked at the elevator apparatus which concerns on Embodiment 4 of this invention from upper direction.

Hereinafter, preferred embodiments of the elevator apparatus of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a schematic view of the elevator apparatus according to Embodiment 1 of the present invention as viewed from above, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a side view of the pit portion showing a state in which the car is stopped at the lowest floor in the elevator apparatus according to FIG. 1, and FIG. 4 is a side view of the pit portion showing a state in which the car is pushed down in the elevator apparatus according to Embodiment 1 of the present invention. FIG.

1 to 4, the elevator apparatus is disposed on the rear side in the depth direction of the car 3 disposed in the hoistway 1 with the entrance facing the landing 2 and the car 3 in the hoistway 1. The counterweight 4 and the winding machine 5 are provided. Here, the width direction of the entrance / exit of the landing 2 is defined as the frontage direction, and the horizontal direction orthogonal to the frontage direction is defined as the depth direction.

A pair of car guide rails 7a and 7b are respectively supported by rail brackets 8 fixed to both side walls in the frontage direction of the hoistway 1 at regular intervals in the vertical direction, spaced apart in the frontage direction, and vertically It is arrange | positioned so that it may extend. The car 3 is guided by the pair of car guide rails 7a and 7b and is movable in the vertical direction.

A pair of weight guide rails 9a and 9b are supported by rail brackets 10 fixed on both side walls in the frontage direction of the hoistway 1 at regular intervals in the vertical direction, respectively, and a pair of car guide rails 7a and 7b. Is disposed so as to extend in the up-down direction and spaced apart in the frontage direction on the rear side in the depth direction. The counterweight 4 is guided by the pair of weight guide rails 9a and 9b and can move in the vertical direction.

The hoisting machine 5 is attached to a hoisting machine support beam 11 that is installed between upper ends of the pair of weight guide rails 9a and 9b and extends in the frontage direction. The hoisting machine 5 makes the shaft 6a of the sheave 6 coincide with the depth direction so that the sheave 6 and the vertical projection surface of the weight 4 are balanced with the vertical projection surface of the car 3 when viewed from above in the vertical direction. It is arrange | positioned in the upper part of the counterweight 4 of the hoistway top part 1a so that it may be located in between. The vertical projection plane of the car 3 is a space occupied by the car 3 when the car 3 is viewed from above in the vertical direction. The vertical projection surface of the counterweight 4 is a space occupied by the counterweight 4 when the counterweight 4 is viewed from above in the vertical direction.

The pair of car suspension vehicles 12a and 12b are respectively adjusted so as to suspend the substantially center of gravity of the car 3 when viewed from above in the vertical direction, and a pair of car guide rails 7a and 7b are provided below the car 3. Are arranged apart from each other, that is, in the frontage direction.

A car shock absorber stand 13 is fixed to the floor surface of the pit portion 1b and arranged to extend in the frontage direction. The lower ends of the pair of car guide rails 7 a and 7 b are fixed to both ends of the car shock absorber base 13. The car shock absorber 14 is fixed to the central portion in the length direction of the car shock absorber base 13.

A weight buffer base 15 is fixed to the floor surface of the pit portion 1b, and is disposed on the rear side in the depth direction of the car shock absorber base 13 so as to extend in the frontage direction. The lower end portions of the pair of weight guide rails 9 a and 9 b are fixed to both end portions of the weight buffer base 15. The weight buffer 16 is fixed to the center of the weight buffer base 15 in the length direction.

The car support beam 17 opposite to the pit portion is fixed to the floor surface of the pit portion 1b, and is disposed between the car shock absorber base 13 and the weight shock absorber base 15 so as to extend in the depth direction. When viewed from above in the vertical direction, the pit section car 18 crosses the other corner in the front direction of the vertical projection surface of the car 3 and the rear corner in the depth direction, and the front direction of the vertical projection surface of the car 3 The pit portion is fixed to the car support beam 17 so as to protrude between the other side and the vertical projection surface of the car 3 and the vertical projection surface of the counterweight 4. At this time, as viewed from vertically above, the projecting end of the vertical projection surface of the car 3 of the pit portion return wheel 18 in the depth direction is close to the other end of the sheave 6 in the front direction. Yes.

The car support beam 19 opposite to the top part is disposed on the hoistway top part 1a so as to extend between the upper end side of the car guide rail 7b on the other side in the frontage direction and the hoisting machine support beam 11 and extend in the depth direction. Yes. The head warping vehicle 20 is fixed to the car warping car support beam 19 so as to be positioned between the car suspension vehicle 12b and the pit warping vehicle 18 with the axis aligned with the frontage direction and with respect to the depth direction. It is arrange | positioned at the top part 1a. At this time, as viewed from vertically above, the front end portion in the depth direction of the top return wheel 20 is close to the end portion of the car suspension vehicle 12b that protrudes to the other side in the front opening direction of the vertical projection surface of the car 3. Yes.

The weight suspension wheel 21 is disposed on the upper portion of the counterweight 4 with its axis inclined with respect to the depth direction so as to suspend the substantially center of gravity position of the counterweight 4 when viewed from above in the vertical direction. At this time, when viewed from vertically above, the end portion on the other side in the frontage direction of the weight suspension wheel 21 is close to the end portion on one side in the frontage direction of the sheave 6.

Next, roping will be described. First, the hoisting rope 22 as a main rope is constructed between the upper end side of the car guide rail 7a on one side of the frontage direction and the hoisting machine support beam 11 so that one end of the hoisting rope 22 extends in the depth direction. It is fixed by the cage reinforcer 24. The hoisting rope 22 lowered from the car rope stopping portion 24 is spanned from one side in the front direction of the car 3 to the pair of car suspension vehicles 12a and 12b, and is pulled down from the other side in the front direction of the car 3. The hoisting rope 22 pulled up from the other side in the front direction of the car 3 is hung from the front side in the depth direction to the top return wheel 20 and lowered from the rear side in the depth direction of the top return wheel 20.

Then, the hoisting rope 22 lowered from the rear side in the depth direction of the top return wheel 20 is stretched over the pit part return wheel 18 from the front side in the depth direction, and is pulled up from the rear side of the pit part return wheel 18 in the depth direction. And the hoisting rope 22 pulled up from the rear side in the depth direction of the pit portion return wheel 18 is wound around the sheave 6 from the other side in the frontage direction a plurality of times and then lowered from one side in the frontage direction of the sheave 6. It is done. And the hoisting rope 22 lowered from one side of the frontage direction of the sheave 6 is hung from the other side of the frontage direction to the weight suspension vehicle 21 and pulled up from one side of the frontage direction of the weight suspension vehicle 21. The end is fixed to the hoisting machine support beam 11 by the weight stop portion 25.

Here, as shown in FIG. 4, the car 3 is pushed down, and the shock absorber receiving beam 26 attached to the lower surface of the car 4 is in contact with the car shock absorber 14. The diameter of the pit portion return wheel 18 is set so that a clearance can be secured between the car and the car 3.

According to the first embodiment, the elevator apparatus is a weight drop-off system in which the counterweight 4 is disposed on the rear side in the depth direction of the car 3, and the hoisting machine 5 is disposed above the counterweight 4. Therefore, the frontage dimension of the hoistway 1 can be reduced.

The hoisting machine 5 is disposed above the counterweight 4, and only the weight hoisting wheel 21 is disposed between the hoisting machine 5 and the counterweight 4. Therefore, the vertical traveling space of the counterweight 4 can be secured without increasing the overhead dimension or increasing the pit depth.

The pit portion return wheel 18 is disposed so as to cross the corner on the other side in the frontage direction of the vertical projection surface of the car 3 and the rear side in the depth direction when viewed from above in the vertical direction. Therefore, the degree of freedom of installation of the equipment under the car (not shown) is increased, and when the car 3 is pushed down, the interference between the pit part return wheel 18 and the equipment under the car can be easily avoided.

The protruding end of the vertical projection plane of the car 3 of the pit portion return wheel 18 toward the depth side in the depth direction is close to the end on the other side in the front direction of the sheave 6 when viewed from above in the vertical direction. Therefore, since the angle with respect to the vertical direction of the hoisting rope 22 traveling between the pit part return wheel 18 and the sheave 6 is reduced, the thrust load acting on the bearings of the pit part return wheel 18 and the sheave 6 is reduced. The wear of the hoisting rope 22 is reduced.

Further, the front end portion in the depth direction of the top return wheel 20 is close to the end portion of the car suspension vehicle 12b that protrudes to the other side in the front-end direction of the vertical projection surface of the car 3 when viewed from vertically above. . Therefore, since the angle with respect to the vertical direction of the hoisting rope 22 traveling between the top return wheel 20 and the car suspension wheel 12b is reduced, the thrust load acting on the bearings of the top return wheel 20 and the car suspension wheel 12b is reduced. The wear of the hoisting rope 22 is reduced.

Furthermore, the end on the other side in the frontage direction of the weight suspension wheel 21 is close to the end on the one side in the frontage direction of the sheave 6 when viewed from above in the vertical direction. Therefore, since the angle with respect to the vertical direction of the hoisting rope 22 traveling between the weight suspension wheel 21 and the sheave 6 is reduced, the thrust load acting on the bearings of the weight hoisting wheel 21 and the sheave 6 is reduced and the hoisting wheel 22 is hoisted. Wear of the rope 22 is reduced.

In the first embodiment, the pit part return wheel and the top return wheel are configured by one wheel. However, when the horizontal distance between the hoisting machine and the top return wheel is long, the pit part return wheel is returned. From the viewpoint of suppressing the increase in the diameter of the vehicle, it is desirable that the pit portion return wheel or the top portion return wheel is configured by arranging two return wheels in the guide direction of the hoisting rope.

In the first embodiment, the sheave of the hoisting machine is disposed with the shaft aligned in the depth direction, and the weight suspension is disposed with the shaft inclined with respect to the depth direction and horizontal. However, the sheave of the hoisting machine may be disposed with the shaft inclined with respect to the depth direction and horizontal, and the weight suspension wheel may be disposed with the shaft aligned with the depth direction.

In Embodiment 1 described above, the opposing direction of the pair of car suspension cars is parallel to the opposing direction of the pair of car guide rails. However, the opposing direction of the pair of car suspension cars is determined by As long as it is hung at a substantially center of gravity position, it may be inclined with respect to the opposing direction of the pair of car guide rails.

In the first embodiment, the weight guide rails are supported on both side walls in the frontage direction of the hoistway through the rail brackets, but the weight guide rail is provided on the side wall on the rear side in the depth direction of the hoistway. It may be supported via a bracket.

Embodiment 2. FIG.
FIG. 5 is a schematic view of an elevator apparatus according to Embodiment 2 of the present invention as viewed from above.

In FIG. 5, the hoisting machine 5 has the sheave 6 when the sheave 6 is viewed from above in the vertical direction with the shaft 6 a of the sheave 6 aligned with the frontage direction and the sheave 6 directed to one side of the frontage direction. It is arranged on the rear side in the depth direction of the car guide rail 7b on the other side of the hoistway top portion 1a so as to be positioned between the car suspension vehicle 12b on the other side of the direction and the pit portion return wheel 18. ing. At this time, the front end portion of the sheave 6 in the depth direction is close to the end portion of the car suspension wheel 12b that protrudes to the other side in the front direction of the vertical projection surface of the car 3 when viewed from above in the vertical direction. Yes.

A weight suspension wheel 21 is disposed on the counterweight 4 with its axis aligned in the depth direction. The hoistway so that the top return wheel 20 is positioned between the pit part return wheel 18 and the weight suspension wheel 21 when the axis is inclined with respect to the depth direction and is horizontal and viewed from above in the vertical direction. It is arrange | positioned at the top part 1a. At this time, when viewed from above in the vertical direction, the end on one side in the front direction of the top return wheel 20 is close to the end on the other side in the front direction of the weight lifting wheel 21, and the front end in the front direction of the top return wheel 20. The other end portion is close to the end portion of the pit portion return 18 projecting to the rear side in the depth direction of the vertical projection plane of the car 3.
Other configurations are the same as those in the first embodiment.

Also in the second embodiment, the elevator apparatus is a weight drop-down system in which the counterweight 4 is disposed on the rear side in the depth direction of the car 3, and the hoisting machine 5 is the guide rail 7b for the car on the other side in the frontage direction. Therefore, the frontage dimension of the hoistway 1 can be reduced.

Further, since the hoisting machine 5 is disposed outside the vertical projection plane of the car 3 and the counterweight 4, the vertical movement of the counterweight 4 can be performed without increasing the overhead size or increasing the pit depth. Space can be secured.

Further, the pit portion return wheel 18 is disposed so as to cross the corner on the other side in the frontage direction of the vertical projection surface of the car 3 and the rear side in the depth direction when viewed from above in the vertical direction. Therefore, the degree of freedom of installation of the equipment under the car (not shown) is increased, and when the car 3 is pushed down, the interference between the pit part return wheel 18 and the equipment under the car can be easily avoided.

According to the second embodiment, the top return wheel 20 having a size smaller than that of the hoisting machine 5 is disposed above the counterweight 4, so that the necessary space above the counterweight 4 is reduced. Therefore, the traveling space in the vertical direction of the counterweight 4 can be increased.

Embodiment 3 FIG.
FIG. 6 is a schematic view of an elevator apparatus according to Embodiment 3 of the present invention as viewed from above.

In FIG. 6, the hoisting machine 5 makes the shaft 6 a of the sheave 6 coincide with the depth direction, and the sheave 6 projects to the rear side in the depth direction of the vertical projection surface of the counterweight 4. Is disposed above the counterweight 4. The weight suspension wheel 21 is disposed on the counterweight 4 such that the shaft is inclined with respect to the depth direction and is horizontal so as to suspend the substantially center of gravity position of the counterweight 4 when viewed from above in the vertical direction. When viewed from above in the vertical direction, the pit portion return wheel 18 crosses the other corner in the front direction of the vertical projection surface of the car 3 and the rear corner in the depth direction, and the front direction of the vertical projection surface of the car 3 It arrange | positions at the pit part 1b so that it may protrude in the other side and the rear side of the vertical direction of the counterweight 4 in the depth direction.

In the third embodiment, when viewed from above in the vertical direction, one end of the sheave 6 in the front direction is close to the other end in the front direction of the weight suspension 21, and the front of the sheave 6 The other end of the direction is close to the end of the pit portion return 18 projecting to the rear side in the depth direction of the vertical projection surface of the counterweight 4.
Further, since the horizontal distance between the sheave 6 and the top return wheel 20 of the hoisting machine 5 is long, the two return wheels 18a and 18b are arranged side by side in the guide direction of the hoisting rope 22, and the pit portion return wheel. 18 is constituted.
Other configurations are the same as those in the first embodiment.

In this third embodiment as well, the elevator apparatus is a weight drop-off system in which the counterweight 4 is disposed on the rear side in the depth direction of the car 3, and the hoisting machine 5 is disposed above the counterweight 4. Therefore, the frontage dimension of the hoistway 1 can be made small.

The hoisting machine 5 is disposed above the counterweight 4, and only the weight hoisting wheel 21 is disposed between the hoisting machine 5 and the counterweight 4. Therefore, the vertical traveling space of the counterweight 4 can be secured without increasing the overhead dimension or increasing the pit depth.

The pit portion return wheel 18 is disposed so as to cross the corner on the other side in the frontage direction of the vertical projection surface of the car 3 and the rear side in the depth direction when viewed from above in the vertical direction. Therefore, the degree of freedom of installation of the equipment under the car (not shown) is increased, and when the car 3 is pushed down, the interference between the pit part return wheel 18 and the equipment under the car can be easily avoided.

According to the third embodiment, the pit portion return wheel 18 is configured by arranging two return wheels 18a and 18b side by side in the guide direction of the hoisting rope 22, so that the diameter of the pit portion return wheel 18 is increased. Is suppressed. Therefore, when the car 3 is pushed down without increasing the pit depth, it is possible to easily avoid interference between the pit portion return wheel 18 and the equipment under the car.

Embodiment 4 FIG.
FIG. 7 is a schematic view of an elevator apparatus according to Embodiment 4 of the present invention as viewed from above.

7, the counterweight 4 is disposed on the rear side in the depth direction in the hoistway 1 with the center in the width direction being displaced to one side in the frontage direction. When viewed from above in the vertical direction, the hoisting machine 5 makes the shaft 6a of the sheave 6 coincide with the depth direction, and the sheave 6 is directed to the front side in the depth direction, so that one side portion in the frontage direction is balanced. Is arranged on the hoistway top 1a so as to overlap the vertical projection plane. The hoisting machine 5 is located on the far side in the depth direction of the vertical projection surface of the car 3 when viewed from above in the vertical direction.

The weight suspension wheel 21 is disposed on the counterweight 4 with its axis inclined with respect to the depth direction so as to suspend the substantially center of gravity position of the counterweight 4 when viewed from above in the vertical direction. When viewed from above in the vertical direction, the pit portion return wheel 18 crosses the other corner in the front direction of the vertical projection surface of the car 3 and the rear corner in the depth direction, and the front direction of the vertical projection surface of the car 3 It is arranged in the pit portion 1b so as to protrude to the other side of the front side of the vertical projection surface of the counterweight 4 and the region on the back side of the vertical projection surface of the car 3 in the depth direction. Yes.

In the fourth embodiment, when viewed from above in the vertical direction, one end of the sheave 6 in the front direction is adjacent to the other end in the front direction of the weight suspension 21 and the front of the sheave 6 The other end of the direction is on the other end of the vertical projection surface of the counterweight 4 and the end of the pit portion 18 that protrudes into the rear side of the vertical projection surface of the car 3 in the depth direction. It is close.
In addition, since the horizontal distance between the sheave 6 of the hoist 5 and the center of gravity of the counterweight 4 is long, the two suspension wheels 21a and 21b are arranged side by side in the guide direction of the hoisting rope 22 and suspended. A car 21 is configured.
Other configurations are the same as those in the first embodiment.

Also in the fourth embodiment, the elevator apparatus is a weight drop-off system in which the counterweight 4 is disposed on the rear side in the depth direction of the car 3, and the hoist 5 is disposed above the counterweight 4. Therefore, the frontage dimension of the hoistway 1 can be made small.

The hoisting machine 5 is disposed above the counterweight 4, and only the weight hoisting wheel 21 is disposed between the hoisting machine 5 and the counterweight 4. Therefore, the vertical traveling space of the counterweight 4 can be secured without increasing the overhead dimension or increasing the pit depth.

The pit portion return wheel 18 is disposed so as to cross the corner on the other side in the frontage direction of the vertical projection surface of the car 3 and the rear side in the depth direction when viewed from above in the vertical direction. Therefore, the degree of freedom of installation of the equipment under the car (not shown) is increased, and when the car 3 is pushed down, the interference between the pit part return wheel 18 and the equipment under the car can be easily avoided.

According to the fourth embodiment, since the horizontal distance between the sheave 6 of the hoist 5 and the center of gravity (hanging position) of the counterweight 4 is long, the weight suspension car 21 is divided into two suspension cars 21a, 21 b is arranged side by side in the guide direction of the hoisting rope 22, and the increase in the diameter of the weight suspension wheel 21 is suppressed. Therefore, the vertical traveling space of the counterweight 4 can be secured without increasing the overhead dimension or increasing the pit depth.

In each of the above embodiments, a hoisting rope is used as the main rope. However, the main rope is not limited to the hoisting rope, and a flat belt may be used.
In each of the above embodiments, an underslang elevator device in which a car suspension car is attached to the lower part of the car is described. However, the present invention is applied to an overslang elevator apparatus in which a car suspension car is attached to the upper part of the car. However, the same effect can be obtained.

Claims (7)

An elevator apparatus in which a counterweight is arranged on the rear side in the depth direction of the car,
A pair of car suspension vehicles disposed in the upper or lower portion of the car separated from the frontage direction;
A weight suspension vehicle disposed above the counterweight;
When viewed from above in the vertical direction, across the other corner of the front side of the vertical projection surface of the car and the rear side of the depth direction, the other side of the front direction of the vertical projection surface of the car and the depth direction A pit part return wheel arranged in the pit part so as to protrude to the rear side,
A hoisting machine disposed above the counterweight at the top of the hoistway so that the sheave is located between the pit section return wheel and the weight suspension car as viewed from above in the vertical direction;
When viewed from above in the vertical direction, the shaft is positioned so that it is located between the car suspension car on the other side of the frontage direction and the pit portion return car on the other side of the frontage direction of the vertical projection surface of the car. A top return wheel arranged at the top of the hoistway in accordance with the direction,
One end of the main rope is fixed to one side in the front direction of the hoistway top and descends, is suspended by the pair of car suspension vehicles, rises from the other side in the front direction of the car, and returns to the top. Wrapped over the car, descended, hung over the pit section return car, ascended, wound around the sheave, descended, hung over the weight suspension car and raised, the other end of the hoistway An elevator apparatus characterized by being fixed to the top. An elevator apparatus in which a counterweight is arranged on the rear side in the depth direction of the car,
A pair of car suspension vehicles disposed in the upper or lower portion of the car separated from the frontage direction;
A weight suspension vehicle disposed above the counterweight;
When viewed from above in the vertical direction, across the other corner of the front side of the vertical projection surface of the car and the rear side of the depth direction, the other side of the front direction of the vertical projection surface of the car and the depth direction A pit part return wheel arranged in the pit part so as to protrude to the rear side,
A top return wheel disposed at the top of the hoistway so as to be positioned between the weight suspension car and the pit part return car as viewed from above in the vertical direction;
When viewed from above in the vertical direction, the sheave is directed to the vertical projection surface of the car on the other side of the front direction of the vertical projection surface of the car, and the axis of the sheave is aligned with the front direction, A hoist arranged at the top of the hoistway so that the sheave is located between the car suspension wheel on the other side of the frontage direction and the pit portion return wheel,
The main rope descends with one end fixed to one side in the front direction of the hoistway top, is suspended over the pair of car suspension vehicles and rises from the other side in the front direction of the car, and the sheave Wrapped around the pit part return car, rises, hangs over the top return car, descends, hangs over the weight suspension car, rises, and the other end of the hoistway An elevator apparatus characterized by being fixed to the top. When viewed from above in the vertical direction, the pit portion return wheel protrudes from the other side of the front direction of the vertical projection surface of the car and between the vertical projection surface of the car and the vertical projection surface of the counterweight. The elevator apparatus according to claim 1, wherein the elevator apparatus is disposed in the pit portion. The pit section return vehicle is viewed from above in the vertical direction, the other side in the front direction of the vertical projection surface of the car, the rear side in the depth direction of the vertical projection surface of the car, and the vertical projection of the counterweight. The elevator apparatus according to claim 1 or 2, wherein the elevator apparatus is disposed in the pit portion so as to protrude to a region on the other side in the frontage direction of the surface. The elevator apparatus according to claim 4, wherein the weight suspension vehicle is configured by arranging two suspension vehicles side by side in the guiding direction of the main rope. The pit portion return wheel is so projected as to protrude from the upper side of the vertical projection surface of the car in the vertical direction and the rear side of the counterweight in the depth direction of the vertical projection surface of the counterweight as viewed from above in the vertical direction. The elevator apparatus according to claim 1 or 2, wherein the elevator apparatus is disposed in a pit portion. The elevator apparatus according to claim 6, wherein the pit section return wheel is configured by arranging two return wheels side by side in the guiding direction of the main rope.

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