KR20050002816A - Elevator equipment - Google Patents

Abstract

In the elevator apparatus, the upper car and the first balance weight are suspended by the first main rope wound on the first driving rope wheel of the first driving device. The second and third main ropes are wound around the second drive rope wheel of the second drive device. The lower car and the second counterweight are suspended by the second and third main ropes. The lower car is provided with first and second lower car suspension portions. The first and second lower car suspensions are arranged symmetrically with respect to the center of the lower car. The second main rope has a second car side end portion connected to the first lower car suspension portion, and a second counterweight side end portion connected to the second counterweight. The third main rope has a third car side end portion connected to the second lower car suspension portion and a third counterweight side end portion connected to the second counterweight.

Description

Elevator device {ELEVATOR EQUIPMENT}

For example, Japanese Patent Application Laid-Open No. 1984-133188 shows an elevator apparatus in which two cars are arranged up and down in a common hoistway. However, since the elevator device is suspended with two cars and two balancing weights 2: 1 roping, the device configuration is complicated. In addition, since the rope speed and the rotation speed of the rope car were twice as compared with 1: 1 roping, the noise increased, and the car could not run at high speed.

Summary of the Invention

The present invention has been made to solve the above problems, the upper car and the first balance weight, and the lower car and the second balance weight can each be suspended by 1: 1 roping, thereby reducing the noise, the upper car and An object of the present invention is to obtain an elevator apparatus capable of traveling at a lower side of a car at high speed.

An elevator apparatus according to the present invention comprises: a first drive device disposed above the hoistway and having a first drive rope; An upper car and a first balancing weight for elevating the inside of the hoistway by the driving force of the first drive device; A first main rope wound on a first drive rope wheel and having a first car side end connected to the upper car and a first counterweight side end connected to the first counterweight; A second drive device disposed above the hoistway and having a second drive rope wheel; A lower side car having a first and a second lower side car suspension part and disposed below the upper side car and moving up and down in the hoistway by the driving force of the second drive device; A second balancing weight for elevating the inside of the hoistway by the driving force of the second drive device; A second main rope wound around the second drive rope wheel and having a second car side end connected to the first lower car suspension portion and a second counterweight side end connected to the second counterweight; A third main rope wound around the second drive rope wheel and having a third car side end connected to the second lower car suspension portion and a third counterweight end connected to the second counterweight; Lower car suspensions are arranged symmetrically with respect to the center of the lower car.

The present invention relates to a single-shaft multi-car type elevator apparatus in which a plurality of cars are lifted in a common hoistway.

1 is a front view showing the elevator apparatus according to Embodiment 1 of the present invention;

2 is a side view showing the elevator apparatus of FIG. 1;

3 is a plan view illustrating the elevator apparatus of FIG. 1;

4 is an enlarged front view showing the upper part of the hoistway of FIG. 1;

FIG. 5 is an enlarged side view showing the upper part of the hoistway of FIG. 1; FIG.

6 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention;

The top view which shows the elevator apparatus by Embodiment 3 of this invention.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described with reference to drawings.

Embodiment 1

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the elevator apparatus by Embodiment 1 of this invention, FIG. 2 is the side view which shows the elevator apparatus of FIG. 1, FIG. 3 is the top view which shows the elevator apparatus of FIG. Fig. 5 is a side view showing an enlarged upper part of the hoistway of Fig. 1 in an enlarged manner. 4 is a view viewed from the direction of arrow IV of FIG. 3, and FIG. 5 is a view viewed from the direction of arrow V of FIG.

In the figure, the first drive device 3 having the first drive rope wheel 2 is disposed above the hoistway 1. The upper car 4 and the first balancing weight 5 move up and down the hoistway 1 by the driving force of the first drive device 3.

The first drive rope 2 is wound with a plurality of first main ropes 6 (only one is shown in the drawing) for suspending the upper car 4 and the first balancing weight 5 in the hoistway 1. have. The 1st main rope 6 is equipped with the 1st car side edge part 6a connected to the upper part of the upper car 4, and the 1st counterweight side end part 6b connected to the upper part of the 1st counterweight 5. As shown in FIG. .

The upper car 4 is suspended by a first main rope 6 at its center. Moreover, the 1st balance weight 5 is also suspended by the 1st main rope 6 in the center. In addition, the upper car 4 and the first counterweight 5 are suspended in a 1: 1 roping manner.

The first drive device 3 is disposed directly above the upper car 4 such that the axis of rotation of the first drive rope wheel 2 extends horizontally. In the upper part of the hoistway 1, the 1st deflection rope wheel 7 in which the 1st main rope 6 was wound is arrange | positioned. The first deflection rope wheel 7 guides the first main rope 6 from the first drive rope wheel 2 to the first counterweight 5.

Moreover, the 1st deflection rope wheel 7 is arrange | positioned so that the rotating shaft may extend in parallel with the rotating shaft of the 1st drive rope wheel 2. In addition, the first main rope 6 is wound around the first drive rope wheel 2 and the first deflection rope wheel 7 in a full winding method.

In the upper part of the hoistway 1, the 2nd drive apparatus 9 which has the 2nd drive rope wheel 8 is arrange | positioned. The lower car 10 and the second balance weight 11 move up and down the hoistway 1 by the driving force of the second drive device 9. The lower car 10 is disposed below the upper car 4 in the hoistway 1. The first and second counterweights 5 and 11 are arranged in the width direction of the upper car 4 and the lower car 10 behind the upper car 4 and the lower car 10 in the hoistway 1. It is.

First and second lower car suspension portions 10a and 10b are provided on both upper end portions of the lower car 10. The first and second lower car suspension portions 10a and 10b are disposed symmetrically with respect to the center of the lower car 10.

The second drive rope wheel 8 includes a plurality of second main ropes 12 and a plurality of the lower cars 10 and the second balancing weight 11 suspended in the hoistway 1 (only one is shown in the drawing). In the figure, only one of the third main ropes 13 is wound.

The 2nd main rope 12 is equipped with the 2nd car side edge part 12a connected to the 1st lower car suspension part 10a, and the 2nd counterweight side edge part 12b connected to the 2nd counterweight 11. As shown in FIG. . The 3rd main rope 13 is equipped with the 3rd car side edge part 13a connected to the 2nd lower car suspension part 10b, and the 3rd counterweight side edge part 13b connected to the 2nd counterweight 11. As shown in FIG. .

The lower car 10 is suspended at its center by the second and third main ropes 12, 13. In addition, the second counterweight 11 is also suspended by the second and third main ropes 12 and 13 at its center. In addition, the lower car 10 and the second balance weight 11 is suspended in a 1: 1 roping method.

In the upper part of the hoistway 1, the 2nd deflection rope wheel 14 by which the 2nd and 3rd main ropes 12 and 13 were wound is arrange | positioned. The second and third main ropes 12, 13 are wound in a complete winding manner on the second deflection rope wheel 14.

Moreover, the 1st and 2nd guide pulleys 15 and 16 are arrange | positioned at the upper part of the hoistway 1. As shown in FIG. The first guide pulley 15 is disposed directly above the first lower car suspension portion 10a and moves the second main rope 12 from the second drive rope wheel 8 to the first lower car suspension portion 10a. Induce. The 2nd guide pulley 16 is arrange | positioned immediately above the 2nd lower side car suspension part 10b, and guides the 3rd main rope 13 to the 2nd lower side car suspension part 10b. The second and third main ropes 12 and 13 are connected to both lower car suspension portions 10a and 10b through both sides of the upper car 4 so as not to interfere with the upper car 4.

Further, in the upper part of the hoistway 1, first and second diverting pulleys 17, 18 for guiding the third main rope 13 from the second drive rope wheel 8 to the second guide pulley 16. Is installed.

The axis of rotation of the second drive rope wheel 8, the second deflection rope wheel 14 and the first guide pulley 15 extend parallel and horizontally to each other. The axis of rotation of the second guide pulley 16 extends parallel to and horizontally in the width direction of the upper car 4 and the lower car 10. The axis of rotation of the first and second diverting pulleys 17, 18 extends vertically.

As shown in FIG. 3, in the hoistway 1, the hoisting of the pair of car guide rails 19 and the first counterweight 5 for guiding the lifting of the upper car 4 and the lower car 10 is guided. A pair of 1st counterweight guide rails 20 and a pair of 2nd counterweight guide rails 21 which guide the lifting and lowering of the 2nd counterweight 11 are provided.

The car guide rails 19 are such that the straight lines they forget in the vertical projection plane extend in parallel to the width direction of the upper car 4 and the lower car 10 and also pass through the centers of the upper car 4 and the lower car 10. It is arranged. Further, in the vertical projection surface, the first lower car suspension portion 10a is disposed on the front side of the lower car 10 than the car guide rail 19, and the second lower car suspension portion 10b is the car guide rail ( 19 is disposed on the rear side of the lower car 10.

In such an elevator apparatus, a first lower car to which the lower car 10 and the second counterweight 11 are suspended by the second and third main ropes 12 and 13, and the second main rope 12 is connected. Since the second lower side car suspension part 10b to which the suspension part 10a and the 3rd main rope 13 are connected was installed in both sides of the lower side car 10, the upper side car 4 and the lower side car 10 were attached. Each can be suspended with 1: 1 roping. Thereby, the noise of the 1st and 2nd drive devices 3 and 9 can be reduced, and the upper car 4 and the lower car 10 can drive at high speed.

In addition, since the first and second lower car suspension portions 10a and 10b are arranged symmetrically with respect to the center of the lower car 10, the upper car 4 and the lower car 10 are positioned at the center position. It is possible to suspend, thereby preventing the eccentric load from acting on the upper car 4 and the lower car 10, and stably running the upper car 4 and the lower car 10.

Moreover, since the 1st guide pulley 15 was arrange | positioned directly above the 1st lower side car suspension part 10a, and the 2nd guide pulley 16 was arrange | positioned directly above the 2nd lower side car suspension part 10b, In the configuration, the second and third main ropes 12 and 13 can be guided to the first and second lower car suspension portions 10a and 10b, and the upper car 4 and the lower car 10 run stably. You can.

Moreover, since the direction change pulleys 17 and 18 which guide the 3rd main rope 13 from the 2nd drive rope wheel 8 to the 2nd guide pulley 16 were used, by the simple structure, a 3rd main It is possible to prevent the rope 13 from interfering with the first drive device 3.

In addition, the 1st and 2nd balancing weights 5 and 11 are arranged in the width direction of the upper car 4 and the lower car 10 behind the upper car 4 and the lower car 10 in the hoistway 1. Since the space inside the hoistway 1 can be used effectively, the width dimension of the hoistway 1 can be reduced.

Embodiment 2

6 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention. In Embodiment 1, although the 1st and 2nd balancing weights 5 and 11 were arrange | positioned at the rear of the upper car 4 and the lower car 10, as shown in FIG. 6, the 1st and 2nd balancing weight 5 , 11 may be arranged on the side of the upper car 4 and the lower car 10 in the hoistway 1.

In such an elevator apparatus, the first and second balancing weights 5, 11 are located on the side of the upper car 4 and the lower car 10 in the hoistway 1, respectively, of the upper car 4 and the lower car 10. Since it is arrange | positioned in the depth direction, the space in the hoistway 1 can be used effectively, and the depth dimension of the hoistway 1 can be reduced.

Embodiment 3

Next, FIG. 7 is a top view which shows the elevator apparatus by Embodiment 3 of this invention. In Embodiment 1, although the car guide rail 19 is arrange | positioned in the middle part of the depth direction of the upper car 4 and the lower car 10, when the upper car 4 and the lower car 10 are suspended from the center, Since the eccentric load does not act on the car guide rail 19, the installation position of the car guide rail is not limited to FIG.

Therefore, for example, as shown in FIG. 7, the lower car suspension portions 10a and 10b are disposed in the middle portion of the lower car 10 in the depth direction, and the upper car 4 and the lower car 10 are disposed. The car guide rail 19 may be arranged near corner portions which are symmetrical with respect to the center. In this case, the guide pulley 15 and the direction change pulley 18 of FIG. 3 may be omitted, and the layout may be simplified.

Moreover, even if the drive device 3, 9, the deflection rope wheels 7 and 14, the guide pulleys 15 and 16 and the direction change pulleys 17 and 18 are arrange | positioned in the machine room located in the upper part of the hoistway 1, Alternatively, it may be arranged above the hoistway 1. That is, the present invention can be applied to an elevator apparatus having a machine room and also to machine-roomless elevators.

Moreover, in the said example, although the drive apparatuses 3 and 9 were arrange | positioned so that the rotation axis of the drive rope wheels 2 and 8 may extend horizontally, you may arrange | position the drive apparatus so that the rotation axis of a drive rope wheel may extend vertically.

In the above example, one or two directional pulleys were used, but three or more may be used in order to avoid interference between the third main rope and other equipment in the upper part of the hoistway.

Further, in the above example, although the main rope is wound around the drive rope wheel and the deflection rope wheel in a completely winding manner, the half winding method may be sufficient as long as sufficient traction can be obtained. In addition, the deflection rope wheel may be omitted if sufficient traction is obtained.

Claims (5)

A first drive device disposed above the hoistway and having a first drive rope wheel, An upper car and a first balancing weight for elevating the inside of the hoistway by the driving force of the first drive device; A first main rope wound around the first drive rope wheel and having a first car side end portion connected to the upper car and a first counterweight side end portion connected to the first counterweight; A second drive device disposed above the hoistway and having a second drive rope wheel; A lower side car having a first and a second lower side car suspension part and disposed below the upper side car and moving up and down in the hoistway by a driving force of the second driving device; A second balancing weight for elevating the inside of the hoistway by the driving force of the second drive device; A second main rope wound around the second drive rope wheel and having a second car side end portion connected to the first lower car suspension portion, and a second counterweight side end portion connected to the second counterweight; A third main rope wound around the second drive rope wheel and having a third car side end portion connected to the second lower car suspension portion, and a third counterweight side end portion connected to the second counterweight; The first and second lower car suspension portions are arranged symmetrically with respect to the center of the lower car. Elevator device. The method of claim 1, Directly above the first lower car suspension portion at the top of the hoistway, a first guide pulley for guiding the second main rope to the first lower car suspension portion is arranged, and the second lower car suspension portion at the top of the hoistway. Directly above, a second guide pulley for guiding the third main rope to the second lower car suspension is arranged. Elevator device. The method of claim 1, A guide pulley for guiding the third main rope to the second lower car suspension part is disposed directly above the second lower car suspension part of the upper part of the hoistway, and the third main rope is attached to the upper part of the hoistway. 2 is provided with a diverting pulley leading to the guide pulley from the driving rope wheel Elevator device. The method of claim 1, The first and second balance weights are arranged in the width direction of the upper car and the lower car, behind the upper car and the lower car in the hoistway. Elevator device. The method of claim 1, The first and second balance weights are arranged side by side in the depth direction of the upper car and the lower car on the side of the upper car and the lower car in the hoistway. Elevator device.