JP2007112617A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device capable of independently lifting two cars while reducing a space of a hoistway. <P>SOLUTION: This elevator device has the first car 4 arranged in the hoistway 1, a first hoisting machine 17 imparting driving force to this first car 4 via a rope 8, the second car 2 arranged under the first car 4 so that at least a part overlaps with a vertical projection of the first car 4, and a second hoisting machine 12 imparting driving force to this second car 2 via the rope 8. The first car 4 and the second car 2 are suspended by the common rope 8, and are wound on suspension sheaves 15a and 15b of a counterweight 14 in the middle of making this rope 8 reach the second hoising machine 12 from the first hoisting machine 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator apparatus having a plurality of cars that move up and down along guide rails.

  2. Description of the Related Art Conventionally, a double deck elevator has been proposed in which two passenger cars are disposed in the same hoistway and lifted (Patent Document 1 below). In addition, an elevator that has two passenger cars and two hoisting machines and operates the two passenger cars independently has already been proposed (Patent Document 2 below).

Japanese Patent Laid-Open No. 10-279231 (FIG. 1 etc.) JP 59-153773 (FIG. 3 etc.)

  However, the elevator described in Patent Document 1 is not supposed to raise and lower the two cars independently. In fact, the range in which the lower car can move relative to the upper car is the sub guide rail. And the length of the link mechanism. In addition, since a car frame into which two passenger cars are incorporated is provided, it is difficult to save space in the hoistway both in plan and height.

  On the other hand, in the elevator described in Patent Document 2, not only a machine room is required, but also the counterweights are provided separately for the two passenger cars, so it is difficult to save the space of the hoistway. there were.

  The objective of this invention is providing the elevator apparatus which can raise / lower two passenger cars independently, aiming at space saving of a hoistway.

  In order to achieve the above object, the present invention includes a first hoisting machine disposed in a hoistway, a first hoisting machine that applies a driving force to the first car via a rope, A second car arranged below the first car and arranged to at least partially overlap with the vertical projection of the first car, and a driving force via a rope to the second car In the elevator apparatus provided with the second hoisting machine that provides the first hoisting machine, the first car and the second car are suspended by a common rope, and the rope is suspended from the first hoisting machine by the second hoisting machine. On the way to the upper aircraft, I was wound around a suspension car with a weight.

  ADVANTAGE OF THE INVENTION According to this invention, the elevator apparatus which can raise / lower two cages independently can be provided, aiming at space saving of a hoistway.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic view of an elevator apparatus showing an embodiment of the present invention. 2 and 3 are horizontal sectional views of the hoistway of the elevator apparatus showing the present embodiment.

As shown in FIG. 1, the elevator apparatus of the present embodiment is provided with suspension beams 19a and 18b in the horizontal direction at the top of the hoistway 1, and the suspension beam 6a, 6b is provided in the horizontal direction. A first car 4 disposed in the hoistway 1 and a second car 2 disposed below the first car 4 and at least partially overlapping the vertical projection thereof. Are configured to move up and down along the car guide rails 24a and 24b. In the hoistway 1, a counterweight 14 is configured to move up and down along the weight guide rails 25a and 25b. Further, in the hoistway 1, a first hoisting machine 17 that applies driving force to the first car 4 via the rope 8 and a driving force that applies to the second car 2 via the rope 8 are provided. A second hoisting machine 12 is installed. In FIG. 1, the first car 4 is located on the top floor 5, the second car 2 is located on the bottom floor 3, and the counterweight 14 is the bottom floor 3 and top floor of the hoistway 1. The state located in the middle vicinity of 5 is shown.

  The first car 4 and the second car 2 are suspended by a common rope 8 with 2: 1 roping. Further, when the rope 8 is en route from the first hoisting machine 17 to the second hoisting machine 12, it is wound around the suspension wheel 15a and the suspension car 15b of the counterweight 14 so that the counterweight 14 becomes 4: 1. It is suspended by roping.

  When the second hoisting machine 12 is driven so that the second car 2 moves upward from the state of FIG. 1, the counterweight 14 simultaneously moves downward. The moving distance of the counterweight 14 is This is half the moving distance of the second car 2. Similarly, when the first hoisting machine 17 is driven so that the first car 4 moves downward, the counterweight 14 simultaneously moves upward. The movement distance of the counterweight 14 is the first distance It is half the distance traveled by the car 4.

  Here, the roping of a present Example is demonstrated in detail using FIG. First, one end of the rope 8 is fixed by the rope hitch 23 of the suspension beam 19b. On the other hand, the other end of the rope 8 extends downward and passes through suspension wheels 22b and 22a provided at the lower portion of the first car 4, and then extends upward and is provided on the suspension beam 19a. To. The other end of the rope 8 whose direction has been changed by the return wheel 21 extends downward, passes through the return wheel 20 supported by the suspension beam 6a, and is then wound around the sheave 18 of the first hoisting machine 17. It is done. Further, the rope 8 extends downward and changes its direction when it reaches the suspension wheel 15a of the counterweight 14, and extends upward, and when it is changed again by the return wheel 16, it reaches the suspension wheel 15b of the counterweight 14. Further, the other end of the rope 8 extends upward and is wound around the sheave 13 of the second hoisting machine 12, and then extends downward and is redirected by the return wheel 11 and supported by the suspension beam 6b. It reaches the return car 10. Thereafter, the other end of the rope 8 extends downward and extends upward via suspension wheels 9b and 9a provided at the lower portion of the second car 2, and finally is roped by the rope hitch 7 of the suspension beam 6a. It is fixed.

  Next, the planar positional relationship of each component in the present embodiment will be described with reference to FIGS.

  First, FIG. 2 is a horizontal cross section of the hoistway 1 in the vicinity of the first car 4 when the first car 4 is located on the upper floor. As shown in FIG. 2, a return wheel 21 and a suspension beam 19 a are arranged on the left side of the first car 4 when viewed from the landing side, and the counterweight 14 and the first weight are placed on the back side of the first car 4. The hoisting machine 17 and the second hoisting machine 12 are arranged, and on the right side of the first car 4, the rope hitch 23 and the suspension beam 19b are arranged.

  FIG. 3 is a horizontal section of the hoistway 1 in the vicinity of the second car 2 when the second car 2 is located on the lower floor. As shown in FIG. 3, when viewed from the landing side, the return wheel 20 and a suspension beam 6a for fixing the return wheel 20 are fixed to the left side of the second car 2. The return wheel 11 and the right side of the second car 2 are A return wheel 10 and a suspension beam 6b are arranged.

  According to the configuration of the present embodiment, each car can be lifted and lowered independently with the other car in a range where the vertical relationship between the first car 4 and the second car 2 does not change. , Elevator transportation efficiency will improve.

  In addition, even if there are two cars, the structure is such that there is only one counterweight, so that space saving can be realized in a plane as compared with the case where counterweights are provided for each of the two cars. Further, since at least a part of the vertical projection of the first hoisting machine 17 and at least a part of the vertical projection of the second hoisting machine 12 are arranged so as to overlap the vertical projection of the counterweight 14, In addition, further space saving can be realized. Thus, by saving space in a plane, it is possible to ensure a large car area for a predetermined hoistway area.

  On the other hand, the first hoisting machine 17 and the second hoisting machine 12 are located between the moving path of the first car 4 or the second car 2 and the wall of the hoistway 1. Therefore, not only the machine room is unnecessary, but also a significant space saving in the height direction can be realized.

  Further, since the first car 4 and the second car 2 are hung by 2: 1 roping and the counterweight 14 is hung by 4: 1 roping, the moving path of the counterweight 14 can be short. For this reason, even if it arrange | positions so that the vertical projection of the 1st hoisting machine 17 and the vertical projection of the 2nd hoisting machine 12, and the vertical projection of the counterweight 14 may overlap, the dimension of the height direction of a hoistway Can be prevented from increasing.

1 is a schematic side view of an elevator apparatus according to an embodiment of the present invention. It is a horizontal sectional view of the vicinity of the first car of the elevator apparatus showing an embodiment of the present invention. It is a horizontal sectional view near the second car of the elevator apparatus showing an embodiment of the present invention.

Explanation of symbols

1 ... hoistway, 2 ... second car, 3 ... bottom floor, 4 ... first car, 5 ... top floor,
6a, 6b, 19a, 19b ... suspension beam, 7, 23 ... rope hitch, 8 ... rope,
9a, 9b, 15a, 15b, 22a, 22b ... suspension wheel, 10, 11, 16, 20, 21 ... return wheel, 12 ... second hoisting machine, 13, 18 ... sheave, 14 ... counterweight, 17 ... 1st hoisting machine, 24a, 24b ... Car guide rail, 25a, 25b ... Weight guide rail, 26 ... Hoistway wall.

Claims (5)

  A first car disposed in the hoistway, a first hoisting machine for applying a driving force to the first car via a rope, and the first car under the first car and the first car Elevator equipped with a second hoisting machine that gives a driving force to the second car through a rope and a second car arranged so as to overlap at least partly with the vertical projection of one car In the apparatus, the first car and the second car are suspended by a common rope, and the rope is balanced on the way from the first hoist to the second hoist. An elevator apparatus characterized by being wound around a suspension car.   The elevator apparatus according to claim 1, wherein the first car and the second car can be moved up and down independently.   The elevator apparatus according to claim 1, wherein the first car and the second car are hung by 2: 1 roping, and the counterweight is hung by 4: 1 roping.   In Claim 1, the said 1st hoisting machine and the 2nd hoisting machine are located between the movement path | route of the said 1st car or the 2nd car, and the wall of the said hoistway. An elevator apparatus characterized by that.   2. The vertical projection of the counterweight according to claim 1, wherein at least part of the vertical projection of the first hoisting machine and at least part of the vertical projection of the second hoisting machine overlap with the vertical projection of the counterweight. Elevator device.

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