WO2012127683A1

WO2012127683A1 - Double-deck elevator

Info

Publication number: WO2012127683A1
Application number: PCT/JP2011/057186
Authority: WO
Inventors: 森田　進
Original assignee: 三菱電機株式会社
Priority date: 2011-03-24
Filing date: 2011-03-24
Publication date: 2012-09-27
Also published as: CN103429518B; JP5502234B2; CN103429518A; JPWO2012127683A1; KR101470271B1; KR20130117834A

Abstract

A double-deck elevator, wherein a first actuating lever is provided in an upper car emergency stop unit, and a second actuating lever is provided in a lower car emergency stop unit. An actuating rope is wound on actuating rope pulleys provided in the upper part of a car unit frame. The actuating rope is connected to a connection-side lever that is either one of the first and second actuating levers, and is passed through a through-side lever that is the other of the first and second actuating levers. A contact body is provided to the actuating rope below the through-side lever at a predetermined distance from the through-side lever. When the upper car and the lower car fall to the car unit frame, the contact body is brought into contact with the through-side lever, and the first and second actuating levers are relatively pulled up by the actuating rope.

Description

Double deck elevator

This invention relates to a double deck elevator in which an upper car and a lower car are suspended in a car device frame by a car suspension means.

In the conventional double deck elevator, the upper car and the lower car are moved up and down in the main frame by the driving force of the car position adjustment driving device mounted on the main frame, and the distance between the upper car and the lower car is adjusted. A rope for suspending the upper car and the lower car in the main frame is wound around the car position adjusting drive sheave of the car position adjusting drive device. In addition, a pair of upper car suspension cars around which a rope is wound is mounted at the lower part of the upper car, and a pair of lower car suspension cars around which a rope is wound are mounted at the lower part of the lower car.

Rope abnormality detection devices that detect rope abnormality are provided at the lower part of the upper and lower cars, respectively. Each rope abnormality detection device is connected to a swingable interlocking lever, a detection roller that is supported by the interlocking lever and abuts against the rope between suspension wheels, a spring that biases the detection roller toward the rope, and an emergency stop device. And a lifting bar.

¡The detection roller is pressed by a spring and displaced downward when the rope is loosened or the rope is cut. As a result, the interlocking lever is swung, the lifting rod is moved up, and the emergency stop device operates (see, for example, Patent Document 1).

JP 2007-331871 A

In the conventional double deck elevator rope abnormality detection device as described above, the fall of the upper car and the lower car due to the rope cutting is indirectly detected from the change in the rope tension. For this reason, even if the rope is cut, it may take some time for the interlock lever to actually swing due to the rigidity of the rope, and the fall distance of the upper and lower cages until the emergency stop device operates is accurate. Difficult to set.

The present invention has been made to solve the above-described problems, and can directly and immediately detect the fall of the upper car and the lower car due to the cutting of the car suspension means to operate the emergency stop device. It is possible to obtain a double deck elevator that can easily set the falling distance of the upper car and the lower car.

The double deck elevator according to the present invention is a car device frame that is lifted and lowered in the hoistway, an upper car that is provided in the car device frame so as to be movable up and down, and a car that is vertically movable in the car device frame below the upper car. Provided in the lower car cage and the car device frame, and has a car position adjustment drive sheave, and is wound around a car position adjustment drive apparatus and a car position adjustment drive sheave that move the upper car and the lower car up and down. A car suspension means for suspending the upper car and the lower car from the car device frame, a first operating lever, and mounted on the upper car. When the upper car falls on the car device frame, When the lower car is dropped with respect to the car device frame, it has an upper car emergency stop device that stops the upper car by pulling up the first actuating lever, and a second operating lever that is mounted on the lower car. The second The lower car emergency stop device for stopping the lower car, the operating rope pulley provided on the upper part of the car device frame, wound around the operating rope pulley, and the first and second The operating rope pulley is connected to a connecting side lever which is one of the operating levers and is passed through a penetrating side lever which is the other of the first and second operating levers, and is moved up and down by the upper car and the lower car. And an abutment provided on the operating rope at a predetermined interval between the operating rope below the penetrating lever and the penetrating lever. When the car falls, the contact body comes into contact with the penetrating lever, and the first and second operating levers are relatively pulled up by the operating rope.

In the double deck elevator according to the present invention, the operating rope is connected to the connecting side lever and is passed through the penetrating side lever. Sometimes, the abutment body abuts the penetrating lever, and the first and second actuating levers are lifted relatively by the actuating rope, so that the upper car and the lower car can be directly dropped by cutting the car suspension means. Therefore, the emergency stop device can be operated by detecting immediately and the fall distance of the upper car and the lower car can be easily set.

It is a front view which shows the double deck elevator by Embodiment 1 of this invention. It is the side view which combined the figure which looked at the lower car emergency stop apparatus along the arrow A direction of FIG. 1, and the figure which looked at the upper car emergency stop apparatus along the arrow B direction of FIG. FIG. 3 is a side view showing a state where an upper car and a lower car are dropped from the state of FIG. 2. It is a side view equivalent to FIG. 2 which shows the double deck elevator by Embodiment 2 of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a front view showing a double deck elevator according to Embodiment 1 of the present invention. In the figure, a hoisting machine (main drive device) 1 and a deflecting wheel 2 are arranged at the upper part of the hoistway. The hoisting machine 1 has a hoisting machine drive sheave 3, a hoisting machine motor that rotates the hoisting machine driving sheave 3, and a hoisting machine brake that brakes the rotation of the hoisting machine driving sheave 3. .

A car device suspension means 4 is wound around the hoisting machine driving sheave 3 and the deflector wheel 2. As the car device suspension means 4, a plurality of ropes or a plurality of belts are used. The car device 5 and the counterweight 6 are suspended in the hoistway by the car device suspension means 4 and are raised and lowered by the hoisting machine 1. In the hoistway, a pair of car device guide rails for guiding the raising and lowering of the car device 5 and a pair of counterweight guide rails for guiding the raising and lowering of the counterweight 6 are installed.

The car device 5 includes a car device frame (large frame) 7 to which the car device suspension means 4 is connected, an upper car 8 provided in the car device frame 7 so as to be movable up and down, and a car device below the upper car 8. A lower cage 9 is provided in the frame 7 so as to be movable up and down.

The car device frame 7 is provided horizontally between a pair of

vertical frames

7a and 7b, an upper frame 7c provided horizontally between the upper ends of the

vertical frames

7a and 7b, and a lower end of the

vertical frames

7a and 7b. A lower frame 7d and an intermediate frame 7e provided horizontally between intermediate portions of the

vertical frames

7a and 7b are provided.

The upper car 8 is disposed between the upper frame 7c and the intermediate frame 7e. The lower car 9 is disposed between the intermediate frame 7e and the lower frame 7d. The

vertical frames

7 a and 7 b are provided with a pair of upper car guide rails for guiding the vertical movement of the upper car 8 and a pair of lower car guide rails for guiding the vertical movement of the lower car 9.

On the upper frame 7c, there is provided a car position adjustment driving device 11 for changing the distance between the upper car 8 and the lower car 9 by moving them up and down. The car position adjustment driving device 11 changes the distance between the car floor of the upper car 8 and the car floor of the lower car 9 to match the floor distance of the building.

The car position adjustment drive device 11 includes a car position adjustment drive sheave 12 and a car position adjustment motor 13 that rotates the car position adjustment drive sheave 12. The rotation axis of the car position adjustment drive sheave 12 is horizontal and parallel to the width direction of the car device 5 (left-right direction in FIG. 1).

A pair of upper

car suspension wheels

14 a and 14 b are provided at the lower part of the upper car 8. A pair of lower

car suspension wheels

15 a and 15 b are provided at the lower part of the lower car 9.

A car suspension means 16 is wound around the car position adjustment drive sheave 12. As the car suspension means 16, a plurality of ropes or a plurality of belts are used. The car suspension means 16 has a first end portion 16a connected to the upper frame 7c and a second end portion 16b connected to the intermediate frame 7e.

The car suspension means 16 is wound around an upper car suspension car 14b, an upper car suspension car 14a, a car position adjustment drive sheave 12, a lower car suspension car 15a, and a lower car suspension car 15b in order from the first end 16a side. To the second end 16b. Thus, the upper car 8 and the lower car 9 are suspended from the car device frame 7 by the car suspension means 16.

The first end 16 a of the car suspension means 16 is connected to the upper frame 7 c via the first rope hitch 17. The second end 16 b of the car suspension means 16 is connected to the intermediate frame 7 e through the second rope hitch 18. Between the first rope hitch 17 and the upper frame 7c, a hitch moving device 19 is provided as an elongation absorbing device that displaces the first rope hitch 17 in the vertical direction.

The hitch moving device 19 has an actuator such as a motor for moving the first rope hitch 17. The hitch moving device 19 adjusts the substantial length of the car suspension means 16 by displacing the first rope hitch 17 and absorbs the elongation of the car suspension means 16 over time and the load fluctuation. To do.

At the lower part of the upper car 8, an upper car scale device 20 for detecting the load of the upper car 8 is provided. A lower car scale device 21 for detecting the load of the lower car 9 is provided at the lower part of the lower car 9. The hitch moving device 19 adjusts the length of the car suspension means 16 according to the load detected by the upper car balance device 20 and the lower car balance device 21.

A plurality of upper car shock absorbers 22 are provided on the intermediate frame 7e. A plurality of lower car shock absorbers 23 are provided on the lower frame 7d.

The upper car safety device 24 is mounted at the lower part of the upper car 8. The upper car safety device 24 engages with the upper car guide rail and stops the upper car 8 when the upper car 8 is dropped with respect to the car device frame 7 due to abnormal loosening or cutting of the car suspension means 16. Let

A lower car safety device 25 is mounted at the lower part of the lower car 9. The lower car safety device 25 engages with the lower car guide rail and stops the lower car 9 when the lower car 9 is dropped with respect to the car device frame 7 due to abnormal loosening or cutting of the car suspension means 16. Let

A pair of operating rope pulleys 26a and 26b are provided at the lower part of the upper frame 7c. The operating rope pulleys 26 a and 26 b are arranged at intervals in the width direction of the car device 5. Further, the operating rope pulleys 26 a and 26 b are disposed directly above both ends in the width direction of the upper car 8.

An operating rope 27 is wound around the operating rope pulleys 26a and 26b. The operating rope 27 is suspended from the operating rope pulleys 26a and 26b. As the operating rope 27, a rope, a belt, a wire, or the like can be used. In addition, the operating rope 27 has a first end 27 a connected to the lower car safety device 25 and a second end 27 b that engages with the upper car safety device 24.

FIG. 2 is a side view of a combination of a view of the lower car emergency stop device 25 taken along the direction of arrow A in FIG. 1 and a view of the upper car emergency stop device 24 taken along the direction of arrow B in FIG. It is. The upper car safety device 24 is provided with a first operating lever 28. The first operating lever 28 is attached to the upper car 8 so as to be rotatable about a shaft 28a. The upper car emergency stop device 24 performs a braking operation when the first operating lever 28 is pulled up.

The lower cage emergency stop device 25 is provided with a second operating lever 29. The second operating lever 29 is attached to the lower car 9 so as to be rotatable about a shaft 29a. The lower car safety device 25 performs a braking operation when the second operating lever 29 is pulled up.

The second operation lever 29 is provided with a lower car stopper 29b to which the first end portion 27a of the operation rope 27 is connected. That is, the second operating lever 29 is a connection side lever to which the operating rope 27 is connected.

The first operation lever 28 is provided with an upper car stopper 28b. The upper car stopper 28b is provided with a through hole through which the second end portion 27b of the operating rope 27 is passed. That is, the first operating lever 28 is a penetrating lever through which the operating rope 27 is passed.

A clamp 30 as an abutment body and an operating rope weight 31 are attached to the second end 27b of the operating rope 27. The clamp 30 is attached to the operating rope 27 with an appropriate gripping force below the upper car stopper 28b. The clamp 30 is attached to the operating rope 27 with a predetermined interval (gap) S between the upper car stopper 28b.

The operating rope weight 31 is suspended from the second end 27b below the clamp 30 and applies a predetermined tension to the operating rope 27. Accordingly, the operating rope 27 moves by rotating the operating rope pulleys 26a and 26b with an appropriate traction force as the upper car 8 and the lower car 9 move up and down.

The first and second actuating levers 28 and 29 are pressed by appropriate springs so that they do not rotate with the weight of the actuating rope weight 31. Further, since the upper car 8 is normally moved up and down by the same distance in the opposite direction as the lower car 9, even if the operating rope 27 is moved by the vertical movement of the upper car 8 and the lower car 9, the gap S is substantially constant. To be kept.

FIG. 3 is a side view showing a state where the upper car 8 and the lower car 9 are dropped from the state of FIG. When the car suspension means 16 is cut, the upper car 8 and the lower car 9 fall on the car device frame 7 almost simultaneously. When the fall distance of the upper car 8 and the lower car 9 becomes almost half of the gap S, the clamp 30 comes into contact with the upper car stopper 28b, and the first and second operating levers 28 and 29 are relatively pulled up by the operating rope 27. Then, the upper car safety device 24 and the lower car safety device 25 are braked, and the upper car 8 and the lower car 9 are stopped.

Here, the upper car 8 and the lower car 9 have a distance of ½ or more of the gap S from when the upper car emergency stop device 24 and the lower car emergency stop device 25 start the braking operation until completely stopped. Just fall. At this time, the gripping force of the clamp 30 against the operating rope 27 pulls up the first and second operating levers 28 and 29 so that a large load acts on the operating rope 27 and the operating rope 27 is not cut off. The size is set to be large enough to activate the 24 and 25 and to slide along the operating rope 27 after the operation of the

emergency stop devices

24 and 25 is started.

Further, the size of the gap S is determined in consideration of the elongation of the car suspension means 16. For this reason, the first and second actuating levers 28 and 29 are not pulled up except when the car suspension means 16 is cut.

In such a double deck elevator, the operating rope 27 is connected to the second operating lever 29 and passed through the first operating lever 28, and a clamp 30 is provided on the operating rope 27 below the first operating lever 28. When the upper car 8 and the lower car 9 are dropped with respect to the device frame 7, the clamp 30 comes into contact with the first operating lever 28 so that the first and second operating levers 28 and 29 are relatively lifted by the operating rope 27. Therefore, it is possible to detect the fall of the upper car 8 and the lower car 9 due to the cutting of the car suspension means 16 directly and immediately to operate the

emergency stop devices

24 and 25, so that the upper car 8 and the lower car 9 can be operated. The fall distance can be set easily.

In addition, in the conventional double deck elevator, since the detection roller is mounted on the lower part of the upper car and the lower car, if the detection roller is rotated when the upper car and the lower car are moved up and down, vibration and noise are increased. It is easy to propagate to the car and the lower car. On the other hand, in the first embodiment, since the operating rope pulleys 26a and 26b are attached to the upper frame 7c, propagation of vibration and noise to the upper car 8 and the lower car 9 is suppressed.

Further, in the conventional double deck elevator, maintenance work for confirming the wear of the detection roller or replacing the detection roller is necessary. However, according to the configuration of the first embodiment, the labor of the maintenance work is reduced. The

Embodiment 2. FIG.
Next, FIG. 4 is a side view corresponding to FIG. 2, showing a double deck elevator according to Embodiment 2 of the present invention. The lower frame 7d is provided with a pair of tension pulleys 32a and 32b that apply tension to the operating rope 27. The operating rope 27 is endlessly arranged by being wound around the operating rope pulleys 26 a and 26 b at the upper part of the car device frame 7 and by being wound around the tension pulleys 32 a and 32 b at the lower part of the car device frame 7. Thereby, the operating rope weight 31 of Embodiment 1 is abbreviate | omitted. Other configurations and operations are the same as those in the first embodiment.

Even in such a double deck elevator, it is possible to detect the fall of the upper car 8 and the lower car 9 due to the cutting of the car suspension means 16 directly and immediately to operate the

emergency stop devices

24, 25. The falling distance of the lower car 9 can be set easily.

In the above example, the upper

car suspension wheels

14 a and 14 b are provided in the lower part of the upper car 8, but may be provided in the upper part of the upper car 8. In this case, the distance between the upper car 8 and the lower car 9 can be reduced, and the present invention can be applied to a building having a small floor distance.
In the first embodiment, the traction force is obtained by the operating rope weight 31, but the traction force may be obtained by the weight of the operating rope 27.
Furthermore, although clamp 30 was shown as a contact body in

Embodiment

1, 2, it is not limited to this, If there is no fear of the cutting | disconnection of the operating rope 27, for example, the operating rope 27 itself will be tied and contacted. A body may be provided.
Furthermore, the first operating lever 28 is a through-side lever and the second operating lever 29 is a connecting-side lever, but the reverse may be possible.
Further, the layout of the entire double deck elevator (position and number of the hoist 1 and the counterweight 6) and the roping method are not limited to the above examples.
Furthermore, the present invention can be applied to any double deck elevator such as a hydraulic elevator, a rope type linear motor elevator, a low press type linear motor elevator, and the like.

Claims

A cage frame that is raised and lowered in the hoistway;
An upper car provided in the car device frame so as to be movable up and down;
A lower car provided in the car device frame so as to be vertically movable under the upper car;
A car position adjustment driving device which is provided in the car device frame and has a car position adjustment drive sheave, and moves the upper car and the lower car up and down;
A car suspension means that is wound around the car position adjustment drive sheave and suspends the upper car and the lower car from the car device frame;
It has a first operating lever and is mounted on the upper car. When the upper car is dropped with respect to the car device frame, the first operating lever is pulled up to stop the upper car. Top basket emergency stop device,
A second operating lever is mounted on the lower car, and the lower car is stopped by pulling up the second operating lever when the lower car is dropped with respect to the car device frame. Bottom cage emergency stop device,
An operating rope pulley provided at the top of the car device frame;
It is wound around the operating rope pulley and is connected to a connection-side lever that is one of the first and second operating levers and is the other of the first and second operating levers An operating rope that is passed through a through-side lever and moves by rotating the operating rope pulley by the vertical movement of the upper car and the lower car, and a predetermined gap between the through-side lever and the lower side of the through-side lever. An abutting body provided on the operating rope at an interval;
A double deck in which when the upper car and the lower car are dropped with respect to the car device frame, the contact body comes into contact with the penetrating lever, and the first and second operating levers are relatively pulled up by the operating rope. elevator.
The operating rope has a first end connected to the connection side lever, and a second end provided with the contact body,
The double deck elevator according to claim 1, wherein an operating rope weight that applies tension to the operating rope is suspended below the contact body of the second end.
A tension pulley provided at a lower portion of the car device frame, for applying tension to the operating rope;
The said operation rope is arrange | positioned endlessly by being wound around the said tension | pulling pulley at the lower part of the said cage apparatus frame while being wound around the said action rope pulley at the upper part of the said cage apparatus frame. Double deck elevator.