JP2003246564A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily secure balance of a car, even if an elevating stroke is long, in a friction drive type elevator device. <P>SOLUTION: A traveling cable 10 constituted of only power lines is used instead of a compensating rope. By the traveling cable 10 of the power lines, weight balance between a car 3 side and a balance weight 4 side is kept, where a traction sheave 6 is a point of support. Further, electric power used for lighting or the like for the car 3 can be supplied to the car 3 through the traveling cable 10 of power lines. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus for raising and lowering a car in a hoistway, and more particularly to a rider connected to a rope by utilizing a frictional force generated between the rope and a drive sheave. TECHNICAL FIELD The present invention relates to a friction drive type elevator device for vertically moving a car and a counterweight.

[0002]

2. Description of the Related Art A rope type elevator apparatus using a wire rope as a main rope generally employs a friction drive method as its drive method. As shown in FIG. 11, the friction drive type elevator device has a cage 101.
The one end side of the wire rope 102 is locked at the center position of the upper part, and the other end side of the wire rope 102 is locked at the center position of the upper part of the counterweight 103. I try to hang it in a slip-on style. Then, utilizing the frictional force generated between the wire rope 102 and the drive sheave 104, the hoist 10
By driving the wire rope 102 when the drive sheave 104 is rotated by the driving force of 5, the car 101 and the counterweight 103 are moved up and down in the hoistway 106, and the car 101 of each floor is moved. Entrance / exit 1
It is designed to stop at 07.

In such a friction drive type elevator apparatus, the frictional force between the wire rope 102 and the drive sheave 104 causes the weight of the car 101 and the balance weight 1
In addition to the weight of No. 03, it depends on the weight of the wire rope 102 as the main rope. The load due to the weight of the wire rope 102 varies depending on the relative positions of the car 101 and the counterweight 103. That is, the weight of the wire rope 102 on the side of the car 101 with the driving sheave 104 as the fulcrum and the weight of the wire rope 102 on the side of the driving sheave 104 with the fulcrum 103 as the fulcrum are the balance of the car 101 and the balancing weight 103. Therefore, the force applied to the left and right sides of the drive sheave 104 changes according to the change in the weight balance of the wire rope 102.

Such load fluctuation is negligible in an elevator system having a short lifting stroke, but the lifting stroke is long and the weight of the wire rope 102 is large in the load applied to the drive sheave 104. In an elevator device that occupies a specific gravity, it becomes a factor that causes a friction drive force shortage.

Therefore, in an elevator apparatus having a long up-and-down stroke, a balance rope 110 is provided between the lower portion of the car 101 and the lower portion of the balance weight 103, and the weight of the balance rope 110 serves as a fulcrum for the drive sheave 104. The weight imbalance between the side of the car 101 and the side of the counterweight 103 is mitigated to ensure a sufficient frictional force between the wire rope 102 and the drive sheave 104. Also,
In order to stabilize the behavior of the balancing rope 110 when the car 101 and the balancing weight 103 move,
The middle portion of the balance rope 110 is hung on the balance rope tensioning wheel 111, and the balance rope tensioning wheel 1
A predetermined tension is applied by 11.

From the viewpoint of offsetting the change in the weight balance of the wire rope 102 by the weight of the balance rope 110, the balance rope 110 is theoretically the same as the wire rope 102 used as the main rope. The wire cage 110 may be attached to the wire rope 110 so as to be symmetrical with the car basket 101 and the counterweight 103 interposed therebetween. However, the car 101 is usually
A signal from the operation panel in the car 101 is transmitted to the elevator control panel 108, and also the elevator control panel 108 is transmitted.
The tail cord 109 for supplying the electric power for illumination from the car 101 to the car 101 is attached, and the weight of the tail cord 109 also needs to be considered.

That is, the tail cord 109 is usually
It is attached to a position below the center of the lower portion of the car 101, and the weight of the tail cord 109 changes the balance of the car 101. Therefore, in practice, as shown in FIG. 12, the balance rope 1
While adjusting the attachment position of the 10 to the car 101, the unbalance of the car 101 due to the weight of the tail cord 109 is alleviated by the weight of the balance rope 110. Also, the tail cord 10
Balance weight with the side of the car 101 to which 9 is attached 1
In order to keep the weight balance with the 03 side, a different type of rope from the wire rope 102 is used for the balance rope 110, and the number of the balance ropes 110 is increased or decreased.

[0008]

By the way, in recent years, there is a tendency for buildings to become more and more high-rise, and as a result, elevator devices installed in buildings are also required to have longer elevating strokes. It has become to. For this reason,
It has become difficult to maintain the balance of the car 101 while adjusting the mounting position of the balance rope 110 to the car 101 as in the conventional case.

That is, in an elevator apparatus having a long ascending / descending stroke, the tail cord 109 depends on the length of the ascending / descending stroke.
Will also increase in length, resulting in an increase in the weight of the tail cord 109. Therefore, the tail cord 10
9. Even if the mounting position of the balancing rope 110 to the car 101 is slightly deviated from the design position, the weight balance of the car 101 changes greatly, and it becomes difficult to maintain the balance of the car 101.

If the car 101 is raised and lowered while the car 101 is not balanced, for example,
As shown in FIG. 13, the groove portion 112 a of the emergency braking device 112 provided at the bottom of the car 101 is
There are cases in which various obstacles such as interference with the guide rail 113 that guides the lifting and lowering of the vehicle 1 and vibration of the car 101 are caused.

In addition, in an elevator apparatus having a long ascending / descending stroke, the length of the wire rope 102 becomes longer according to the length of the ascending / descending stroke, and the weight of the wire rope 102 also increases. In particular, the wire rope 102 is required to have a strength capable of withstanding its own weight, so that not only the wire rope 102 has a long length, but also has a large diameter, and the friction force between the wire rope 102 and the drive sheave 104 is not used. In order to secure the number, the number tends to increase, and as a result, the weight will increase significantly. Furthermore, as the weight of the wire rope 102 increases, the weight of the balance rope 110 also increases significantly.

As described above, in the elevator device having a long lifting stroke, the weight of the wire cord 102 and the balance rope 110 is increased in addition to the increase of the weight of the tail cord 109, and the total weight of the entire elevator device is significantly increased. To do.
As a result, for example, it is necessary to use a hoist 105 capable of obtaining a large output, and it is necessary to take measures to cope with an increase in weight from various points, which leads to a significant cost increase.

The present invention was devised in view of the above conventional circumstances, and it is easy to keep the balance of the car even when the elevating stroke is long, and to suppress the weight increase as much as possible. It is an object of the present invention to provide an elevator device having a structure capable of suppressing a significant increase in cost.

[0014]

In the elevator apparatus according to the present invention, one end side of the first rope is locked to the upper part of the car and the other end side of the first rope is locked to the upper part of the balance weight. , A friction drive in which a midway portion of the first rope is hung on a drive sheave, and the friction force between the first rope and the drive sheave is used to move up and down the car and the counterweight. An elevator apparatus of a system, comprising a second rope having a power line, one end side of which is locked to the lower part of the car, and the other end side of which is locked to the lower part of the counterweight without restraining an intermediate part, It is characterized in that the weight of the second rope reduces the weight imbalance between the car side and the counterweight side with the drive sheave as a fulcrum.

That is, in this elevator apparatus, the second rope provided between the lower portion of the car and the lower portion of the counterweight functions as a counterbalance rope, and the weight of the second rope serves as a fulcrum for the drive sheave. The weight imbalance between the car side and the weight side is reduced. The second rope has a power line, and power can be transmitted and received using this second rope.

In the elevator apparatus having such a structure, as the second rope, for example, a flat electrode wire cable having a predetermined rigidity and having almost no spring property is used, whereby the balance rope is The second rope can be arranged between the lower part of the car and the lower part of the counterweight without restraining the middle part with a part such as a tension car,
Eliminates the need for parts such as balancing rope tension cars.

Further, in the elevator apparatus having such a structure, if the second rope is used to supply electric power for lighting the car, for example, the power line of the tail cord is unnecessary and the weight of the tail cord is reduced. It can be significantly reduced.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an example of a friction drive type elevator device to which the present invention is applied. The elevator apparatus 1 shown in FIG. 1 has a wire rope (first rope) as a main rope.
It comprises a car 3 and a counterweight 4 connected by 2. One end of the wire rope 2 is locked to the upper part of the car 3 and the other end of the wire rope 2 is balanced by a weight 4
Is suspended on the upper part of the vehicle, and the midway part is suspended around the drive sheave 6 connected to the hoisting machine 5 in a slipping manner. Then, the elevator device 1 utilizes the frictional force generated between the wire rope 2 and the drive sheave 6 to drive the wire rope 2 when the drive sheave 6 is rotated by the drive force of the hoisting machine 5. By the feeding operation, the car 3 and the counterweight 4 are moved up and down in the hoistway 7 provided in the building. Then, the hoisting machine 5 is driven and controlled in accordance with the control signal from the elevator control panel 8, so that the car 3 moves to the target floor and stops at the hall entrance / exit 9 of the target floor. It is like this.

Further, in this elevator apparatus 1, a power line tail cord (second rope) 10 is arranged between the lower portion of the car 3 and the lower portion of the counterweight 4. As shown in FIG. 2, the power line tail cord 10 is configured by removing the signal line from the conventional tail cord 109 in which the power line for power supply and the signal line for signal transmission are mixed, and configured with only the power line. It is the tail code. The power line tail cord 10 as described above is preferably configured as a flat power line cable because it has excellent suspension characteristics and can expect relatively stable behavior.

Incidentally, the signal line included in the conventional tail cord 109 constitutes an independent tail cord as the signal line tail cord 11. The signal line tail cord 11 is arranged between the lower part of the car 3 and the elevator control panel 8 and is used for transmitting a signal between the car 3 and the elevator control panel 8. ing.

The power line tail cord 10 composed of only the power line is provided so that the buffer 12 installed in the pit at the lower end of the hoistway 7 is avoided and one end thereof is locked to the lower part of the car 3 and the middle part is restrained. The other end is locked to the lower part of the counterweight 4 without being locked. Electric power can be transferred between the car 3 side and the counterweight 4 side through the power line tail cord 10. In addition, in FIG. 1, two power line tail cords 10 are provided between the lower portion of the car 3 and the lower portion of the counterweight 4.
Although the example in which the power line tail cords 10 are connected is illustrated, the number of the power line tail cords 10 can be set arbitrarily. For example,
By stacking a plurality of power line tail cords 10 in the thickness direction, more power line tail cords 10 can be connected between the lower portion of the car 3 and the lower portion of the counterweight 4 without interfering with the buffer 12. You can
In addition, the installation position of the buffer 12 in the pit is shown in FIG.
If it is changed as shown in FIG. 3, one power line tail cord 10 can be connected between the lower portion of the car 3 and the lower portion of the counterweight 4.

The power line tail cord 10 is also used to maintain the weight balance between the car 3 side and the counterweight 4 side with the drive sheave 6 as a fulcrum. That is, in this elevator apparatus 1, the power line tail cord 10 used for exchanging electric power between the car 3 and the counterweight 4 has a function as a balance rope that has been conventionally used in this type of elevator apparatus. is doing.

As described above, in the elevator apparatus 1 to which the present invention is applied, the power line tail cord 10 is formed by the heavy power line in the conventional tail cord 109 shown in FIG. The structure is such that it is used instead of the balancing rope, and the signal line tail cord 11 which is relatively light in weight corresponds to the conventional tail cord 109. Therefore, in the elevator device 1 having such a structure, the weight of the tail cord, which has been a factor that makes it difficult to secure the balance of the car 3, is reduced, and the balance of the car 3 can be easily secured.

As described above, the power line tail cord 10 is composed of a flat power line cable or the like composed only of power lines, has a predetermined rigidity, and has almost no spring property, so that it is a car. Even if the power line tail cord 10 moves as the 3 and the counterweight 4 moves up and down, the behavior of the power line tail cord 10 becomes relatively stable. Therefore, in the elevator apparatus 1 that uses the power line tail cord 10 instead of the balancing rope, the balancing rope tensioning vehicle that is conventionally required to stabilize the behavior of the balancing rope in this type of elevator apparatus is unnecessary. Therefore, the number of parts can be reduced accordingly.

Further, in this elevator apparatus 1, as shown in FIG. 4, a generator 13 and a storage battery 14 are provided on the counterweight 4.
And are provided. Note that FIG. 4 is an enlarged view of the portion A in FIG. The generator 13 is, for example, integrally provided with a roller guide portion that guides the lifting / lowering operation of the counterweight 4, and obtains electric power from the rotational force of the roller that rotates in association with the lifting / lowering operation of the counterweight 4. The electric power generated by the generator 13 is stored in the storage battery 1
It is designed to be charged to 4. In addition, this generator 1
The structure and mounting position of 3 are not particularly limited. For example, the generator 13 may be provided separately from the roller guide portion of the counterweight 4. Further, the number of the generators 13 is not particularly limited, and may be set appropriately according to the required amount of electric power.

The electric power generated by this generator 13 is
For example, since it is used as electric power for lighting in the car 3, it may be possible to provide the generator 13 on the car 3 side. However, if the generator 13 is provided on the side of the car 3, the vibration and noise accompanying the operation of the generator 13 may be transmitted to the car 3 and the riding comfort may deteriorate. On the other hand, when the generator 13 is provided on the side of the counterweight 4, the above problems will be prevented. Here, in order to provide the generator 13 for generating the electric power for lighting in the car 3 on the side of the counterweight 4, it is possible to exchange electric power between the car 3 side and the counterweight 4 side. However, in the elevator device 1 to which the present invention is applied, as described above, the car 3
A power line tail cord 10 is connected between the lower part of the power line and the lower part of the counterweight 4.
Since the electric power can be exchanged between the car 3 side and the counterweight 4 side using 0, the generator 13 can be provided on the counterweight 4 side.

A plurality of storage batteries 14, to which the electric power generated by the generator 13 is charged, are connected in series, for example, and are supported by the frame 4a of the counterweight 4. Then, the electric power from the storage battery 14 is supplied to the car 3 side through the power line tail cord 10 and is used for lighting or the like in the car 3. The electric power from the storage battery 14 is converted into alternating current by an inverter panel (not shown) and then used as electric power for lighting in the car 3.

The storage battery 14 itself has a considerable weight. Therefore, in the elevator apparatus 1 to which the present invention is applied, the weight of the storage battery 14 is used as a part of the weight required for the counterweight 4. That is, in the elevator apparatus 1 to which the present invention is applied, the storage battery 14 is placed as a weight on the frame 4a of the counterweight 4, and the weight 15 is used to make up for the insufficient weight of the storage battery 14 alone.

The storage battery 14 may be provided on the side of the car 3 like the generator 13 described above. However, when the storage battery 14 is provided on the side of the car 3, only the weight of the storage battery 14 is provided. The weight of the car 3 increases, and the weight required for the counterweight 4 increases as the weight of the car 3 increases. As a result, the total weight of the elevator apparatus 1 increases. On the other hand, when the storage battery 14 is provided on the counterweight 4 side, the storage battery 14
Since the weight can be used as a weight, an increase in the weight of the entire elevator apparatus 1 can be suppressed in advance. In the elevator apparatus 1 to which the present invention is applied, as described above, the car 3 using the power line tail cord 10 connected between the lower part of the car 3 and the lower part of the counterweight 4.
Since electric power can be exchanged between the side and the counterweight 4 side, the generator 14 can be provided on the counterweight 4 side.

The elevator apparatus 1 to which the present invention is applied
Then, as described above, as a synergistic effect of providing the storage battery 14 on the side of the counterweight 4 and reducing the total weight of the elevator apparatus 1, the effect of reducing the burden on the building and improving the durability of the building is obtained. Can be expected. Further, when the weight of the car 3 and the counterweight 4 is reduced, the load on the hoisting machine 5 is also reduced, and it is possible to use a relatively inexpensive hoisting machine having a small capacity as the hoisting machine 5. In addition, the power consumption can be reduced to that extent.

Furthermore, if the weight of the car 3 and the counterweight 4 is reduced, the number of wire ropes 2 as main ropes can be reduced, and the number of power line tail cords 10 can be reduced accordingly. You can As a result, the total weight of the entire elevator apparatus 1 can be further reduced, the number of parts can be reduced, and the parts cost and the manufacturing cost can be significantly reduced.

By the way, in the elevator apparatus 1, the car 3 is stopped for a long time at the landing entrance / exit 9 on one of the floors of the building. By using such time, electric power is supplied from the power supply provided on the building side to the car 3 while the car 3 is stopped, and the electric power from this power supply is supplied via the power line tail cord 10. Send to the balance weight 4 side,
If the storage battery 14 provided in the counterweight 4 is charged, it is extremely effective in securing the electric power necessary for lighting the car 4 and the like. Therefore, in the elevator apparatus 1 to which the present invention is applied, the car 3 is provided with the movable contact mechanism (first contact mechanism) 20 as shown in FIG. 5, and is connected to the power source in the vicinity of the entrance / exit 9 of each floor. Fixed contact mechanism (second contact mechanism) 21 is provided,
While the car 3 is stopped at the landing entrance / exit 9 on one of the floors of the building, the contact 22 of the movable contact mechanism 20 provided on the car 3 and the fixing provided near the landing entrance / exit 9 The contacts 23 of the contact mechanism 21 are brought into contact with each other to supply the electric power from the power source to the car 3. Then, the electric power from the power source supplied to the car 3 is sent to the counterweight 4 side via the power line tail cord 10 to charge the storage battery 14.

The movable contact mechanism 20 has a box-shaped cover member 24 whose one end side is open.
4 has a structure in which a pair of contactors 22 are attached to the inner peripheral wall of No. 4. The cover member 24 is attached to the upper portion of the car 3 via a buffer mechanism 25, the details of which will be described later.

The pair of contacts 22 are, for example, formed by curving a conductive metal piece, and are fixed to the inner peripheral wall of the cover member 24 in a state where the curving portion is elastically deformable. Further, on the inner peripheral wall of the cover member 24, a pair of electromagnetic magnets 26 located outside the pair of contacts 22 and excited by electric power from a power source are attached. The pair of electromagnetic magnets 26 are attracted to the fixed contact mechanism 21 side when electric power is supplied from the power source.
The contact force between the contact 22 of the movable contact mechanism 20 and the contact 23 of the fixed contact mechanism 21 is maintained by the attraction force of the electromagnetic magnet 26.

Further, the cover member 24 is provided with a contact detection switch 27 for detecting a contact state between the contact 22 of the movable contact mechanism 20 and the contact 24 of the fixed contact mechanism 23. The contact detection switch 27 includes a switch body 27a fixed to the outer peripheral side of the cover member 24,
The operating element 27b is inserted through the through hole provided in the cover member 24 to the inner peripheral side of the cover member 24. In the contact detection switch 27, the movable contact mechanism 20 moves to the fixed contact mechanism 21 side, and the contact 22 of the movable contact mechanism 20 and the contact 23 of the fixed contact mechanism 21.
When the and the contact with the fixed contact mechanism 21
The contact 22 of the movable contact mechanism 20 and the contact 2 of the fixed contact mechanism 21 are turned on by being pressed by
3 is detected to be in a contact state. In the elevator apparatus 1, the power supply from the power source to the car 3 is cut off while the contactor detection switch 27 is off, and when the contactor detection switch 27 is turned on, that is, the movable contact mechanism 20 is turned on. It is detected that the contact 22 and the contact 23 of the fixed contact mechanism 21 are in contact with each other, and the state of the car 3 is in the normal operation mode.
In addition, only when the signal for opening the door of the car 3 is supplied, the power supply from the power source to the car 3 is started.

The roller cam 2 is attached to the cover member 24.
The movable contact mechanism 20 receives the pressing force from the fixed contact mechanism 2
A cam 29 for moving to the 1 side is attached. For example, as shown in FIG. 6, the roller cam 28 is fixed to the door 9a of the hall entrance / exit 9 that is opened / closed in conjunction with the door of the car 3. When the door 9a of the hall entrance / exit 9 is opened in conjunction with the door of the car 3, the cam 29 is pressed by the roller cam 28 fixed to the door 9a, and the movable contact mechanism 20 is fixed. The contact 22 of the movable contact mechanism 20 and the contact 23 of the fixed contact mechanism 21 come into contact with each other by moving to the side.

Although FIG. 6 shows an example in which the roller cam 28 is fixed to the door 9a of the hall entrance / exit 9, the roller cam 28 may be fixed to the door of the car 3. A member other than the roller cam 28 may be used as a member for pressing the cam 29, but during maintenance of the elevator apparatus 1, work is performed by moving the car 3 with the door 9a open. In consideration of this, it is preferable that the roller cam 28 is used as a member for pressing the cam 29, and the upper end side and the lower end side of the cam 29 are tapered. That is, during maintenance of the elevator apparatus 1, when the car 3 is moved with the door 9a open, the roller cam 28 may contact the cam 29 from the upper end side or the lower end side thereof. If a roller cam 28 is used as a member for pressing 29, and the upper end side and the lower end side of the cam 29 are tapered, the roller cam 28 follows the tapered shape when it comes into contact with the upper end side or the lower end side of the cam 29. Therefore, problems such as damage due to collision between these parts can be effectively avoided.

The fixed contact mechanism 21 is a plate-like support member 3 made of a magnetic metal material such as iron or samarium cobalt.
0, and a pair of contacts 23 are provided on the support member 30.
Has a structure attached. The support member 30 is
The movable contact mechanism 20 includes a cover member 24 having a size that allows the cover member 24 to enter from one end thereof to the inside thereof, and a pair of contacts 23 is provided on the main surface portion facing the cover member 24 with an insulator 31 interposed therebetween. Is stuck. The support member 30 is attached to the hall entrance / exit 9 by the mounting arm 32.
It is attached to the wall of the nearby building. The support member 30 can also be attached to a component of the door 9a of the hall entrance / exit 9.

The pair of contacts 23 are formed by bending a conductive metal piece, for example, like the contacts 22 of the movable contact mechanism 20. The pair of contacts 23 are fixed to the main surface portion of the support member 30 via the insulator 31 so that the curved portions are elastically deformable so as to face the contacts 22 of the movable contact mechanism 20. ing. Further, regions of both ends of the support member 30 located outside the pair of contacts 23 are regions to be attracted by the electromagnetic magnet 26 of the movable contact mechanism 20, and the support members located between the pair of contacts 23. An area in the center of 30 is an area where the operator 27b of the contact detection switch 27 provided in the movable contact mechanism 20 contacts.

Here, the operation of the movable contact mechanism 20 and the fixed contact mechanism 21 configured as described above will be described with reference to FIG.
This will be described with reference to (a) to FIG. 7 (d).

When the door 9a of the hall entrance / exit 9 is closed, as shown in FIG. 7A, the roller cam 28 fixed to the door 9a is at a position separated from the movable contact mechanism 20 and is provided on the car 3. The contact 22 of the movable contact mechanism 20 and the contact 23 of the fixed contact mechanism 21 provided in the vicinity of the hall entrance / exit 9 are opposed to each other with a predetermined gap. When the car 3 is landed on the target floor and the door of the car 3 is opened, the door 9a of the landing doorway 9 on which the car 3 is landed is opened. The roller cam 28 fixed to the door 9a moves in the direction of arrow B in FIG. 7A, and presses the cam 29 attached to the cover member 24 of the movable contact mechanism 20. As a result, the cover member 24 of the movable contact mechanism 20 moves to the fixed contact mechanism 21 side, and the support member 30 of the fixed contact mechanism 21 enters inside the cover member 24. Then, as shown in FIG. 7B, the contact 22 of the movable contact mechanism 20 and the contact 23 of the fixed contact mechanism 21 come into contact with each other. At this time, since the contact detection switch 27 is off, the power supply from the power supply is cut off.

With the contact 22 of the movable contact mechanism 20 and the contact 23 of the fixed contact mechanism 21 in contact with each other, the cam 29 is further pressed by the roller cam 28, and the cover member 24 further moves to the fixed contact mechanism 21 side. Then, as shown in FIG. 7C, the contact detection switch 2 attached to the cover member 24 by the support member 30 of the fixed contact mechanism 21.
The operating element 27b of No. 7 is pressed and the contact detection switch 27 is turned on. As a result, the power supply from the power source is started, and the power from the power source is supplied to the car 3 side via the contacts 22 and 23.

When the power supply from the power source is started, the electromagnetic magnet 2 attached to the cover member 24 is
6 is excited, and as shown in FIG. 7D, the support member 30 of the fixed contact mechanism 21 is attracted by the electromagnetic magnet 26. As a result, the state in which the contact 22 of the movable contact mechanism 20 and the contact 23 of the fixed contact mechanism 21 are in contact with each other is maintained, and the power supply from the power source to the car 3 is continued even after the door 9a is closed. Will be done. Then, the electric power from the power source supplied to the car 3 is sent to the counterweight 4 side via the power line tail cord 10 and the storage battery 14 provided in the counterweight 4 is charged.

In the elevator apparatus 1 to which the present invention is applied,
By the movable contact mechanism 20 and the fixed contact mechanism 21 as described above, electric power from the power source is supplied to the car 4 while the car 3 is stopped at the landing doorway 9 on any floor of the building.
The electric power from the power source supplied to the car 4 is sent to the counterweight 4 side via the power line tail cord 10 so as to charge the storage battery 14, so that it can be used for lighting in the car 3. The required electric power can be sufficiently secured.

Further, the movable contact mechanism 2 having the above structure
In the 0 and the fixed contact mechanism 21, as described above, the contact 22 of the movable contact mechanism 20 and the contact 2 of the fixed contact mechanism 21.
Since the contact detection switch 27 is turned on and the power supply from the power source is started after the contact with the contact point 3, there is a disadvantage that the contacts 22 and 23 are deteriorated due to the occurrence of an arc or the like. Prevented in advance. That is, when the contactor 22 of the movable contact mechanism 20 and the contactor 23 of the fixed contact mechanism 21 are brought into contact with each other in a state where the power supply from the power source is started, when the contactors 22 and 23 come into contact with each other. An arc may be generated to cause the contacts 22 and 23 to deteriorate, but the movable contact mechanism 20 having the above-described structure
In the fixed contact mechanism 21, the power supply from the power source is cut off when the contacts 22 and 23 are in contact with each other.
Since the power supply from the power supply is started when the contact detection switch 27 is turned on after the contact of the contacts 2 and 23, the contacts 22 and
It is possible to effectively avoid the problem that 23 is deteriorated.

Further, the movable contact mechanism 2 having the above structure
In the 0 and the fixed contact mechanism 21, the contacts 22 and 23 are exposed to the outside. However, when power is supplied from the power source, the support member 30 of the fixed contact mechanism 21 moves the movable contact mechanism 20. Since the contacts 22 and 23 come into contact with each other in a state where they have entered the inside of the cover member 24 of the above, these contacts 2 are supplied when power is supplied from the power source.
No fingers or the like will come into contact with 2, 23. It should be noted that in order to prevent dust and the like from accumulating inside the cover member 24, the cover member 24
Although it is desirable to provide an opening in a part of the contact member 22, even when the opening is provided in the cover member 24, the contact 22,
Since the electromagnetic magnet 25 is disposed outside 23, even if a finger or the like is intentionally inserted into the cover member 24 from the opening, the finger or the like inserted into the cover member 24 comes into contact with the inside. The children 22 and 23 are not touched.

Further, the movable contact mechanism 2 having the above structure
In the 0 and the fixed contact mechanism 21, the movable contact mechanism 20 is moved to the fixed contact mechanism 21 side by using the opening operation of the door 9a provided at the hall entrance / exit 9, and the contact 22 and the fixed contact of the movable contact mechanism 20 are moved. Since the contacts 23 of the mechanism 21 are brought into contact with each other, it is not necessary to separately provide a mechanism for bringing the contacts 22 and 23 into contact with each other. The problem can be effectively avoided.

In the above example, the movable contact mechanism 20 is provided on the side of the car 3 and the fixed contact mechanism 21 is provided in the vicinity of the entrance / exit 9 of each floor. The mechanism 21 may be provided on the side of the car 3 and the movable contact mechanism 20 may be provided near the hall entrance / exit 9 on each floor. However, since the structure of the movable contact mechanism 20 is more complicated than that of the fixed contact mechanism 21, the movable contact mechanism 20 having a relatively complicated structure is provided on the car 3 side in order to reduce costs. It is desirable to do so.

In the friction drive type elevator device 1 in which the car 3 and the counterweight 4 are connected by the wire rope 2, the car 3 is stopped while the car 3 is stopped on any floor. Passengers get on and off,
When the load on the car 3 changes, the car 3 may vibrate vertically due to the expansion and contraction of the wire rope 2. Such vibration due to the load change of the car 3 is particularly remarkable when the up-and-down stroke is long and the wire rope 2 is long. Therefore, in the elevator apparatus 1 to which the present invention is applied, as described above, the cover member 24 of the movable contact mechanism 20 is attached to the upper portion of the car 3 through the buffer mechanism 25 that absorbs the vibration generated in the car 3. I am trying.

The cushioning mechanism 25 is shown in FIGS.
As shown in (b), the first member 35 rotatably attached to the support bracket 33 fixed to the upper portion of the car 3 by the attachment bolt 34, and the first member 35 And a compression spring 37 that restricts the position of the second member 36 with respect to the first member 35. The lower end of the second member 37 supports the cover member 24 of the movable contact mechanism 20.
8A is a side view of the cushioning mechanism 25 seen from the direction of arrow C in FIG. 5, and FIG. 8B is a front view of the cushioning mechanism 25 seen from the direction of arrow D in FIG. is there.

The first member 35 includes an attachment portion 35a attached to the support bracket 33 and the attachment portion 3a.
The shaft portion 35b extending to the lower end side of the 5a and the shaft portion 35
It is composed of an arm portion 35c fixed to the lower end side of b.

The mounting portion 35a has a mounting bolt 34
It is attached to the support bracket 33 by and can be rotated in the direction of arrow E in FIG. A torsion coil spring 38 is wound around the mounting bolt 34, and the mounting portion 35a is biased in the arrow F direction in FIG. 8A by the biasing force of the torsion coil spring 38. There is. A stopper 39 is attached to the support bracket 33, and the stopper 39 regulates the position of the attachment portion 35a biased by the torsion coil spring 38. With such a structure, while the car 3 is being lifted and lowered,
The position of the movable contact mechanism 20 attached to the car 3 via the buffer mechanism 25 becomes stable.

The upper end portion of the shaft portion 35b is the mounting portion 3
It is fixed to the lower end side of 5a, and the arm portion 35c is fixed to the lower end thereof. And the arm portion 35
The lower end side to which c is fixed is inserted into the second member 36 through an opening provided in the upper end of the second member 36.

The arm portion 35c has one end side housed inside the second member 36, and the other end side through a second opening formed in the peripheral wall of the second member 36. It is exposed to the outside of the member 36. And the second
One end side housed inside the member 36 is fixed to the lower end portion of the shaft portion 35b. Further, the other end side exposed to the outside of the second member 36 is provided with a power disconnection switch 40 described later.
Is provided with a through hole through which the tip end of is inserted.

The second member 36 is formed in a tubular shape, and the lower end side of the shaft portion 35b of the first member 35 and the one end side of the arm portion 35c are housed therein. And
The cover member 24 of the movable contact mechanism 20 described above is rotatably attached to the lower end side of the second member 36 by a shaft 41. Further, on the peripheral wall of the second member 36, a power cut-off switch 40 for fixing the power supply from the power source to the car 3 when the vibration of the car 3 exceeds a predetermined amount is fixed. The tip portion of the power disconnection switch 40 has an arm portion 35c of the first member 35.
Is inserted into a through hole provided in the.

The compression spring 37 extends between the mounting portion 35a of the first member 35 and the arm portion 35c, and extends over the shaft portion 35.
It is wrapped around b. And this compression spring 37
The one end side is arranged outside the second member 36 together with the upper end side of the shaft portion 35b, and the other end side is arranged inside the second member 36 together with the lower end side of the shaft portion 35b. The compression spring 37 moves to the outside of the second member 36 when the car 3 moves downward due to a change in load and the first member 35 moves in the direction of arrow G in FIG. The arranged one end side is compressed to absorb the downward movement of the car 3. Further, the compression spring 37 moves to the upper side of the second member 36 when the car 3 moves upward due to the load change and the first member 35 moves in the direction of arrow H in FIG. The other end arranged inside is compressed to absorb the upward movement of the car 3.

The mounting portion 35a of the first member 35
Elastic bodies 42 and 43 are interposed between the compression spring 37 and the second member 35, and between the compression spring 37 and the second member 35. The generation of an unpleasant sound when the is deformed is prevented.

Here, the operation of the buffer mechanism 25 configured as described above will be described with reference to FIGS. 9 (a) to 9 (d).

When the car 3 has landed on the destination floor, FIG.
As shown in (a), the fixed contact mechanism 21 provided near the hall entrance / exit 9 of the target floor and the movable contact mechanism 20 attached to the car 3 via the buffer mechanism 25 face each other. Become. And the door 9a of the hall entrance / exit 9
When the movable contact mechanism 20 is pressed along with the opening operation of the movable contact mechanism, the first member 35 of the buffer mechanism 25 rotates about the mounting bolt 34 and the movable contact mechanism 20 moves, as shown in FIG. 9B. The cover member 24 of the mechanism 20 is the shaft 41.
The movable contact mechanism 20 moves toward the fixed contact mechanism 21 side by rotating about. Then, the contact 22 of the movable contact mechanism 20 and the contact 23 of the fixed contact mechanism 21 come into contact with each other, and power is supplied from the power source to the car 3.

At this time, when the car 3 moves downward due to the change in weight, one end side of the compression spring 37 arranged outside the second member 36 of the buffer mechanism 25 compresses and the car 3 moves downward. Movement is absorbed. Also, a car 3
When is moved upward due to a change in weight, the other end of the compression spring 37 arranged inside the second member 36 of the buffer mechanism 25 is compressed, and the upward movement of the car 3 is absorbed.

Here, the downward movement amount (vibration amount) of the car 3 is large, and the first member 35 of the buffer mechanism 25 is the second member.
When it is largely displaced toward the member 36 side of FIG.
As shown in FIG. 5, the arm 35c of the first member 35 breaks the tip of the power disconnection switch 40 fixed to the second member 36, cutting off the power supply from the power supply. Then, the movable contact mechanism 20 is separated from the fixed contact mechanism 21.

Further, when the upward movement amount (vibration amount) of the car 3 is large and the first member 35 of the buffer mechanism 25 is largely displaced in the direction away from the second member 36,
As shown in FIG. 9D, the arm portion 3 of the first member 35.
The tip of the power disconnection switch 40 fixed to the second member 36 is bent by 5c, and the power supply from the power supply is cut off. Then, the movable contact mechanism 20 is replaced by the fixed contact mechanism 21.
Will be separated from.

In the elevator apparatus 1 to which the present invention is applied,
Through the buffer mechanism 25 as described above, the movable contact mechanism 20
Since the cover member 24 is attached to the car 3, the fixed contact mechanism 2 of the movable contact mechanism 20 can be used even when the car 3 is vibrated in the vertical direction due to the change in weight.
It is possible to appropriately maintain the position with respect to 1 and appropriately supply power from the power supply to the car 3. Further, when the vibration amount of the car 3 is large, it is assumed that the vibration amount of the car 3 exceeds the vibration absorbing function of the buffer mechanism 25. In such a case, the power disconnection switch 40
Since the power supply from the power supply is cut off by the power source, vibrations of the car 3 damage the contacts 22 and 23 of the movable contact mechanism 20 and the fixed contact mechanism 21 and cause an electrical short circuit. It is possible to prevent inconveniences such as swelling.

By the way, the elevator apparatus 1 as described above
However, it is desired that the power supply from the power source via the movable contact mechanism 20 and the fixed contact mechanism 21 be shut off during such maintenance. From such a viewpoint, in the elevator apparatus 1 to which the present invention is applied, as shown in the circuit diagram of FIG. 10, the safety circuit 44 and the inspection switch 45 are provided between the power source and the self-holding circuit. . The safety circuit 44 and the inspection switch 45 are installed on the upper side of the elevator control panel 8 and the car 3, and when the safety circuit 44 is in operation and the inspection switch 45 is operated, power is supplied from the power source. Is being cut off. As described above, in the elevator apparatus 1 to which the present invention is applied, the power line tail cord 10 is provided by using the power line for supplying the electric power for lighting in the car 3, that is, the power line conventionally included in the tail cord. Configure
Since the power line tail cord 10 is used in place of the conventional balancing rope and the signal line tail cord 11 of comparatively light weight is used in place of the conventional tail cord, it is difficult to secure the balance of the car 3. The weight of the tail cord, which has been a factor, is reduced, and the balance of the car 3 can be easily secured.

Further, in the elevator apparatus 1, the power line tail cord 10 has a structure in which the weight balance between the car 3 side and the balance weight 4 side with the drive sheave 6 as a fulcrum is maintained, so that the balance rope No need for parts such as a balance rope tensioning car to stabilize the behavior of this balance rope, reducing the number of parts,
Cost reduction is realized.

Further, in this elevator apparatus 1, by using the power line tail cord 10 instead of the balancing rope, power can be exchanged between the car 3 side and the balancing weight 4 side. It is possible to reduce the weight of the entire elevator apparatus 1 by providing the machine 13 and the storage battery 14 on the side of the counterweight 4, and as a synergistic effect of reducing the weight, reduce the burden on the building and increase the durability. Of the hoisting machine 5 can be expected to be improved, and the load on the hoisting machine 5 can be reduced. As the hoisting machine 5, a relatively inexpensive hoisting machine having a small capacity can be used. It can be kept low.

Further, in this elevator apparatus 1, the weight is reduced, and thus the wire rope 2 as the main rope is
The number of the power line tail cords 10 can be reduced, and the number of components can be further reduced.

As described above, in the elevator apparatus 1 to which the present invention is applied, the number of parts can be reduced and the installability can be improved, and the parts cost and the manufacturing cost can be greatly reduced.

The elevator apparatus 1 to which the present invention is applied
Then, while the car 3 and the counterweight 4 are being moved up and down, the electric power obtained by the generator 13 is stored in the storage battery 14.
The electric power from the power source is supplied to the car 3 through the movable contact mechanism 20 and the fixed contact mechanism 21 while the car 3 is stopped while the car 3 is being charged. Is sent to the counterweight 4 via the power line tail cord 10 to be charged in the storage battery 14, so that it is possible to sufficiently secure the electric power necessary for the illumination and the like in the car 3. Normally, the car 3 is stopped for a long time, and the storage battery 14 is charged with sufficient electric power from the power source while the car 3 is stopped. In this way, when the storage battery 14 is sufficiently charged with electric power, the generator 13 is not operated even when the car 3 is moved up and down, and when the electric power charged in the storage battery 14 is insufficient, an auxiliary operation is performed. Alternatively, the generator 13 may be operated.

Although a specific example of the elevator apparatus 1 to which the present invention is applied has been described above, the present invention is not limited to the above example and is effectively applied to various types of elevator apparatuses. Applicable. Specifically, for example, for multiple deck elevators in which a plurality of cars are vertically connected, a prospective elevator installed to face the outside of the building, a tower tower elevator in which a hoistway is formed by a tower, etc. However, the present invention can be effectively applied.

[0072]

According to the elevator apparatus of the present invention,
A second rope having a power line is provided between the lower part of the car and the lower part of the counterweight without restraining the middle part, and this second rope is designed to function as a counterbalance rope. A second rope, which acts as a balancing rope, can be used to power the car. Therefore, according to this elevator device, the tail cord, which has conventionally been used for supplying electric power to the car and transmitting signals, can be configured only with the signal line, and it is difficult to secure the balance of the car. It is possible to reduce the weight of the tail cord, which has been a factor of, and to easily secure the balance of the car.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of an elevator apparatus to which the present invention has been applied.

FIG. 2 is a schematic diagram for explaining a power line tail cord included in the elevator device.

FIG. 3 is a perspective view when the number of power line tail cords is one in the elevator apparatus.

FIG. 4 is an enlarged perspective view showing a portion A in FIG.

FIG. 5 is a perspective view showing a movable contact mechanism and a fixed contact mechanism included in the elevator apparatus.

FIG. 6 is a perspective view showing a state in which a roller cam is attached to a door of a hall entrance / exit.

7A and 7B are views for explaining the operation of the movable contact mechanism and the fixed contact mechanism, FIG. 7A is a schematic view showing a state when the door is closed, and FIG. Is a schematic view showing a state where the contacts are contacted, (c) is a schematic view showing a state where the contact detection switch is turned on, and (d) is a state where the fixed contact mechanism is attracted by the electromagnetic magnet and the contact state between the contacts is maintained. FIG.

8A and 8B are views showing a shock absorber supporting the movable contact mechanism, wherein FIG. 8A is a side view of the shock absorber viewed from the direction of arrow C in FIG. 5, and FIG. 8B is a shock absorber of the shock absorber in FIG. The front view seen from the direction.

FIG. 9 is a view explaining the operation of the shock absorber,
(A) is a side view showing a state when the door is closed, (b) is a side view showing a state where the contactors of the movable contact mechanism and the fixed contact mechanism are in contact with each other, and (c) is a car that has moved largely downward. A side view showing how the power disconnection switch operates when
FIG. 3D is a side view showing how the power disconnection switch operates when the car has moved significantly upward.

FIG. 10 is a circuit diagram showing a power supply system in the elevator apparatus.

FIG. 11 is a perspective view showing a conventional friction drive type elevator device.

FIG. 12 is a diagram illustrating a mounting position of a balance rope with respect to a car, and is a schematic diagram illustrating a state in which a hoistway is viewed from below.

FIG. 13 is a schematic diagram showing an emergency braking device provided in the lower portion of the car.

[Explanation of symbols]

1 elevator equipment 2 wire rope (first rope) 3 car 4 balanced weights 6 drive sheaves 10 Power line tail cord (second rope) 13 generator 14 Storage battery 20 Moving contact mechanism 21 Fixed contact mechanism 22,23 Contactor 25 buffer mechanism 26 Electromagnetic magnet 27 Contact detection switch 40 power disconnect switch

Claims (9)

[Claims] 1. The one end of the first rope is locked to the upper part of the car, and the other end of the first rope is locked to the upper part of the counterweight so that the middle part of the first rope is connected to the driving rope. In a friction drive type elevator device that is hung on a car and uses the frictional force between the first rope and the drive sheave to move up and down the car and the counterweight, one end side is the car lower part A second rope having a power line that is locked to the other end and the other end side of which is locked to the lower part of the counterweight without restraining the middle part, and the weight of the second rope supports the driving sheave as a fulcrum. The above-mentioned elevator apparatus for alleviating a weight imbalance between the car side and the counterweight side. 2. A storage battery is provided on the counterweight,
The elevator apparatus according to claim 1, wherein electric power is exchanged between the passenger car side and the storage battery by using the second rope. 3. A generator is provided on the counterweight,
The elevator apparatus according to claim 2, wherein the storage battery is charged with electric power generated by the generator when the counterweight moves. 4. A first contact mechanism is provided on the car, and a first contact mechanism is connected to a power source for supplying electric power to the car near the landing doorway of each floor on which the car is landed. Two contact mechanisms are provided respectively, and while the car is landing on an arbitrary floor, the contact of the first contact mechanism provided on the car and the car are landing. The electric power from the power source is supplied to the car, and the electric power supplied to the car is supplied to the car by contacting the contactor of the second contact mechanism provided in the vicinity of the floor entrance / exit of the existing floor. The elevator apparatus according to claim 2, wherein the storage battery is charged by being transmitted to the counterweight side via a rope of No. 2. 5. The contact element of the first contact mechanism and the contact element of the second contact mechanism are brought into contact with each other by utilizing the opening operation of the door of the car or the door of the hall entrance / exit. The elevator apparatus according to claim 4. 6. The contact state between the contactor of the first contact mechanism and the contactor of the second contact mechanism is maintained by an attraction force of an electromagnetic magnet excited by electric power from the power source. The elevator apparatus according to claim 4 or 5. 7. A contact detection switch that is turned on after the contact of the first contact mechanism and the contact of the second contact mechanism contact each other, and when the contact detection switch is turned on. 7. The elevator apparatus according to claim 4, wherein the electric power supply to the car is started from the power source. 8. The car according to claim 4, wherein the first contact mechanism is attached to the car through a cushioning mechanism that absorbs vibration generated in the car. Elevator equipment. 9. The buffer mechanism is provided with a power cut-off switch that shuts off power supply from the power source to the car when vibrations exceeding a predetermined amount occur in the car. The elevator apparatus according to claim 8.