CN1955099B - elevator equipment - Google Patents

Abstract

Provided is an elevator device, which can not only save the space of the elevator passage, but also enable two elevator cars to run up and down independently. The elevator equipment of the present invention has a first elevator car (4) arranged in the hoistway (1); a first hoist (17) that provides a driving force to the first elevator car (4) via a sling (8) a second elevator car (2) positioned below said first elevator car (4) so that at least a portion thereof overlaps a vertical projection of said first elevator car (4); and via a sling (8) A second hoist (12) that imparts a driving force to the second elevator car (2), wherein the first elevator car (4) and the second elevator car (2) are connected by a shared sling (8) Suspension. The sling (8) is wound around suspension wheels (15a, 15b) of the counterweight (14) on the way extending from the first hoist (17) to the second hoist (12).

Description

elevator equipment

technical field

The invention relates to an elevator installation having a plurality of elevator cars traveling up and down along guide rails.

Background technique

As the prior art, in Patent Document 1, Japanese Patent Application Laid-Open No. 10-279231, a double-platform elevator in which two elevator cars traveling up and down have been disclosed in the same hoistway. In addition, in Patent Document 2, Japanese Patent Application Laid-Open No. 59-153773, an elevator has been disclosed in which two elevator cars and a hoist are respectively provided so that the two elevator cars operate independently.

Patent Document 1: Japanese Patent Application Laid-Open No. 10-279231 (Fig. 1 etc.)

Patent Document 2: Japanese Patent Application Laid-Open No. 59-153773 (Fig. 3 etc.)

However, in the elevator disclosed in the above-mentioned Patent Document 1, there is no assumption that the two elevator cars can run up and down independently. In fact, the movable range of the lower elevator car relative to the upper elevator car is restricted The length of the auxiliary guide rail (sub guide rail) and the length of the linkage mechanism are limited. In addition, since a frame for installing two elevator cars is provided, it is difficult to save the space of the elevator passage no matter in the plane direction or in the height direction.

On the other hand, in the elevator disclosed in the above-mentioned patent document 2, not only a machine room needs to be provided, but also counterweights are provided for the two elevator cars, so it is also difficult to save the space of the hoistway.

Contents of the invention

The object of the present invention is to provide an elevator device, which can not only save the space of the elevator passage, but also allow two elevator cars to run up and down independently.

In order to achieve the above object, the elevator equipment of the present invention has: a first elevator car arranged in the hoistway; two suspension wheels arranged at the lower part of the first elevator car; The first hoist machine with driving force; the second elevator car that is located below the first elevator car and is arranged so that at least a part of it overlaps with the vertical projection of the first elevator car; is arranged on the second elevator car The two suspension wheels at the bottom of the second elevator car; and the second hoist that gives the second elevator car a driving force via the sling, wherein the first elevator car and the second elevator car are shared by a common Suspended by a sling, the sling is hung on the suspension wheel of the counterweight on the way extending from the first hoist to the second hoist, and the elevator equipment includes: The two first suspension beams, the two second suspension beams installed near the floor bottom height of the highest floor, the deflection pulleys installed on one of the first suspension beams, and the deflection pulleys installed on one side The first elevator car side deflection pulley located above the second suspension beam and on the left side of the first elevator car when viewed from the elevator hall side is placed below the other second suspension beam and The second elevator car side diverting pulley located on the right side of the second elevator car when viewed from the elevator hall side, the two hanging pulleys arranged on the counterweight, and the diverting pulley arranged above the counterweight , and a diverting pulley arranged below the diverting pulley on the side of the second elevator car and located on the right side of the second elevator car when viewed from the elevator hall side, one end of the sling is connected by the other side of the first The sling hook of the suspension beam is fixed, and the other end extends downward, passes through the suspension pulley provided on the first elevator car, and then extends upward, and passes through the diverting pulley provided on one of the first suspension beams. After turning, it extends downward again. After passing through the diverting pulley on the side of the first elevator car, it is wound on the sheave of the first hoist, and then extends downward. The sling turns upwards and extends upwards, turns downwards again through the deflection pulley above the counterweight, and extends upwards through the other suspension pulley of the counterweight, and is wound on the first On the rope pulley of the second hoist, it extends downward and turns upward through the diverting pulley arranged below the diverting pulley on the side of the second elevator car. It extends downward, passes through the suspension wheels provided on the second elevator car, extends upward, and is finally fixed on the sling hook of one of the second suspension beams, so that the first elevator car and the second elevator car are suspended in a 2:1 winding manner, and the balance weight is suspended in a 4:1 winding manner, and the first elevator car and the second elevator car can independently travel up and down, The first winch and the second hoist are located between the running passage of the first elevator car and the side wall of the lifting passage or between the running passage of the second elevator car and the side wall of the lifting passage .

According to the present invention, it is possible to provide an elevator apparatus that can save the space of the hoistway and allow two elevator cars to run up and down independently.

Description of drawings

Fig. 1 is a schematic side view showing an elevator device according to an embodiment of the present invention;

Fig. 2 is a horizontal sectional view showing the vicinity of the first elevator car of the elevator apparatus of the embodiment of the present invention;

Fig. 3 is a horizontal sectional view showing the vicinity of the second elevator car of the elevator apparatus according to the embodiment of the present invention.

Symbol Description

1 lifting channel

2 second elevator car

3 lowest level

4 first elevator car

5 top floors

6a, 6b, 19a, 19b suspension beams

7, 23 sling hook

8 slings

9a, 9b, 15a, 15b, 22a, 22b suspension wheels

10, 11, 16, 20, 21 diverting pulleys

12 second hoist

13, 18 rope pulley

14 balance weight

17 first windlass

24a, 24b elevator car guide rail

25a, 25b counterweight rail

26 Elevator wall

Detailed ways

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

Fig. 1 is a schematic diagram showing an elevator apparatus according to an embodiment of the present invention, and Fig. 2 and Fig. 3 are horizontal cross-sectional views showing a hoistway of the elevator apparatus according to this embodiment.

As shown in Figure 1, in the elevator equipment of this embodiment, the beams 19a and 19b for suspension are arranged on the top of the hoistway 1 along the horizontal direction, and the beams 6a and 6b for suspension are arranged along the horizontal direction, and their height is at the highest level. Near the height of the bottom of the floor on floor 5. In addition, the first elevator car 4 arranged in the hoistway 1 and the second elevator car 4 located below the first elevator car 4 are arranged so that at least a part thereof overlaps with the vertical projection of the first elevator car. The car 2 is raised and lowered along the elevator car guide rails 24a, 24b. In addition, in the lifting channel 1, the counterweight 14 is raised and lowered along the counterweight guide rails 25a, 25b. In addition, in the hoistway 1, there are provided a first hoist 17 for imparting a driving force to the first elevator car 4 via the sling 8, and a second hoist 12 for imparting a driving force to the second elevator car 2 via the sling 8. . And, represented in Fig. 1 is following state: the first elevator car 4 is positioned at the highest floor 5, the second elevator car 2 is positioned at the lowest floor 3, and the balance weight 14 is positioned at the lowest floor 3 and the highest floor 5 of the hoistway 1 Near the middle position between.

Furthermore, the first elevator car 4 and the second elevator car 2 are suspended via a common sling 8 in a 2:1 winding arrangement. And the sling 8 is hung on the suspension wheel 15a and the suspension wheel 15b of the counterweight 14 on the way extending from the first hoist 17 to the second hoist 12, thus, the counterweight 14 is suspended in a winding mode of 4:1. Cable 8 is suspended.

And, as can be seen from Fig. 1, when the second elevator car 2 relied on the driving force of the second hoist 12 to move upwards, the counterweight 14 moved down simultaneously, but the moving distance of the counterweight 14 was the second elevator car Half of the travel distance of compartment 2. Equally, when the first elevator car 4 relies on the driving force of the first hoist 17 to move down, the counterweight 14 moves upwards simultaneously, but the moving distance of the counterweight 14 is the moving distance of the first elevator car 4 half.

Hereinafter, referring to FIG. 1 , the sling winding method of this embodiment will be described in detail. First, one end of the sling 8 is fixed by the sling hook 23 of the suspension beam 19b. On the other hand, the other end of the sling 8 extends downward through suspension pulleys 22b, 22a provided at the lower portion of the first elevator car 4, and then extends upward to reach the diverting pulley 21 provided on the suspension beam 19a. After turning by the diverting pulley 21, the other end of the sling 8 extends downward again, passes through the diverting pulley 20 supported by the suspension beam 6a, and is wound around the sheave 18 of the first hoist 17. The sling 8 then extends downwards to reach the hanging pulley 15a of the balance weight 14, then extends upwards after being turned, and reaches the hanging pulley 15b of the balance weight 14 after being turned again by the diverting pulley 16. In addition, the other end of the sling 8 extends upward again and is wound on the sheave 13 of the second hoist 12, then extends downward, and is diverted by the deflection pulley 11 to reach the deflection supported by the suspension beam 6b. pulley10. Then the other end of the sling 8 extends downward again, passes through the suspension wheels 9b and 9a arranged at the bottom of the second elevator car 2, extends upward, and is finally fixed on the sling hook 7 of the suspension beam 6a.

Referring to FIG. 2 and FIG. 3 , the planar positional relationship of the structural components in this embodiment will be described below.

Firstly, FIG. 2 is a horizontal sectional view of the hoistway 1 in the vicinity of the first elevator car 4 when the first elevator car 4 is located on an upper floor. As shown in Figure 2, when viewed from the side of the elevator hall, deflection pulleys 21, suspension beams 19a, etc. are provided on the left side of the first elevator car 4, and a balancer is provided on the back side of the first elevator car 4. The weight 14 , the first hoist 17 , the second hoist 12 , and the like are provided with a sling hook 23 and a suspension beam 19 b on the right side of the first elevator car 4 .

Furthermore, FIG. 3 is a horizontal sectional view of the hoistway 1 in the vicinity of the second elevator car 2 when the second elevator car 2 is located on a lower floor. As shown in Figure 3, when viewed from the side of the elevator hall, the left side of the second elevator car 2 is provided with a deflection pulley 20 and a suspension beam 6a for fixing it, and on the right side of the second elevator car 2 The deflection pulley 11, the deflection pulley 10, and the suspension beam 6b are provided on the side.

According to the structure of the above-mentioned present embodiment, within the range where the vertical relationship between the first elevator car 4 and the second elevator car 2 remains unchanged, since the respective elevator cars can be lifted and lowered independently of the other elevator car, it is possible to Improve the transport efficiency of elevators.

In addition, since two elevator cars and one counterweight are combined, it is possible to save space on the plane compared with the case where one counterweight is provided for each of the two elevator cars. Furthermore, since at least a part of the vertical projection of the first hoist 17 and at least a part of the vertical projection of the second hoist 12 are arranged so as to overlap with the vertical projection of the counterweight 14 , it is possible to further save space on a plane. By saving plane space, a relatively large area of the elevator car can be ensured relative to a certain area of the hoistway.

On the other hand, since the first hoisting machine 17 and the second hoisting machine 12 are located between the running passage of the first elevator car 4 and the wall of the hoisting passage 1, or the traveling passage of the second elevator car 2 and the wall of the hoisting passage 1, so it goes without saying that there is no need to set up a mechanical room, and the space in the height direction can be greatly saved.

In addition, since the first elevator car 4 and the second elevator car 2 are suspended in a 2:1 winding manner, and the balance weight 14 is suspended in a 4:1 winding manner, the moving path of the balance weight 14 can be shortened. Therefore, even if the vertical projection of the first hoist 17 and the vertical projection of the second hoist 12 are provided so as to overlap with the vertical projection of the counterweight 14, the increase in the height dimension of the hoistway can be suppressed.

Claims (2)

1. A kind of elevator installation, this elevator installation has: the first elevator car that is arranged in hoistway; The two suspension wheels that are arranged on the bottom of described first elevator car; The first hoist machine with driving force; the second elevator car that is located below the first elevator car and is arranged so that at least a part of it overlaps with the vertical projection of the first elevator car; is arranged on the second elevator car The two hanging sheaves at the bottom of the second elevator car; and the second hoisting machine for giving the driving force to the second elevator car through the sling, characterized in that, The first elevator car and the second elevator car are suspended by a common sling which is wound on the suspension sheave of the counterweight en route from the first hoist to the second hoist , The elevator equipment includes: two first suspension beams arranged at the top of the hoistway, two second suspension beams arranged near the bottom height of the highest floor, and one side of the first suspension beam. a deflection pulley on a suspension beam, a first elevator car side deflection pulley disposed above one of the second suspension beams and located on the left side of the first elevator car when viewed from the elevator hall side, The second elevator car side deflection pulley arranged under the second suspension beam on the other side and located on the right side of the second elevator car when viewed from the elevator hall side, and the two counterweights arranged on the counterweight suspension pulley, a diverting pulley arranged above the counterweight, and a diverting pulley arranged below the second elevator car side diverting pulley and located on the right side of the second elevator car when viewed from the elevator hall side , One end of the sling is fixed by the sling hook of the first suspension beam on the other side, and the other end extends downwards, passes through the suspension wheels on the first elevator car, and then extends upwards. The deflection pulley on the first suspension beam on one side turns and extends downward again, after passing through the first elevator car side deflection pulley, is wound on the sheave of the first hoist, and then Extending downwards, the sling is turned and then extended upwards through a suspension wheel of the balance weight, and then turned downwards again through the deflection pulley arranged above the balance weight, and the other of the balance weight The hanging sheave turns to extend upwards and hangs on the sheave of the second hoist, then extends downwards, and turns upwards through the deflection pulley arranged below the second elevator car side deflection pulley, After being turned by the side diverting pulley of the second elevator car, it extends downward, passes through the suspension pulley installed on the second elevator car, and then extends upward, and finally is fixed to the suspension of one of the second suspension beams. The first elevator car and the second elevator car are suspended in a 2:1 winding manner, the balance weight is suspended in a 4:1 winding manner, and the first elevator car and the second elevator car can travel up and down independently, The first winch and the second hoist are located between the running passage of the first elevator car and the side wall of the lifting passage or between the running passage of the second elevator car and the side wall of the lifting passage . 2. Elevator installation according to claim 1, characterized in that at least part of the vertical projection of the first hoist and at least part of the vertical projection of the second hoist overlap the vertical projection of the counterweight.

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