JP2007197144A - Elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator capable of reducing rotation moment generated in a car and improving the riding comfortableness of a passenger in the car. <P>SOLUTION: In this elevator, a tail cord is not connected with the car 13. This elevator is provided with a hoisting machine 11 around which a main rope 12 is wound, the car 13 provided at one end of the main rope 12, and a counterweight 14 provided at the other end of the main rope 12. Both ends of a compensating rope 15 are connected with the bottom face of the car 13 and the lower end of the counterweight 14, respectively. A position of the center of gravity of a hoisting load of the compensating rope 15 for the bottom face of the car 13 agrees with a position of the center of gravity of the car 13 substantially. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator of a tail cordless type in which a tail cord is not connected to a car, and more particularly to an elevator that can improve the riding comfort of a passenger on the car.

  The structure of the elevator generally used is demonstrated using FIG. As shown in FIG. 4, the elevator 50 includes a hoisting machine 11 around which the main rope 12 is wound, a substantially rectangular parallelepiped car 13 suspended from one end of the main rope 12, and the other end of the main rope 12. And a counterweight 14 having a substantially rectangular parallelepiped shape suspended from the center. Here, the hoisting machine 11 is installed in the machine room 30, while the car 13 and the counterweight 14 are vertically movable in the hoistway 31. Further, both ends of a compensatory rope 15 are connected to the bottom surface of the car 13 and the lower end of the counterweight 14, and a compensatory 16 that is movable in the vertical direction is wound around the compensatory rope 15. Tension is applied to the compen- sation rope 15 by its own weight. By providing the compensation rope 15 and the compensation sheave 16, it is possible to prevent the load on the main rope 12 from being biased toward the car 13 or the counterweight 14, particularly in a high-rise building. Further, a buffer member 17 (buffer) is installed at the bottom of the hoistway 31, and a receiving plate (a striker, a striker, etc.) corresponding to the buffer member 17 is received on the bottom surface of the car 13 so as to receive the buffer member 17. (Not shown in FIG. 4). The buffer member 17 is received by the receiving plate of the car 13 when the car 13 suddenly descends due to an accident such as the main rope 12 being cut, so that the car 13 collides with the floor surface of the hoistway 31. It has a function to alleviate the impact when

  As shown in FIG. 4, a junction box 18 is installed on the side wall of the hoistway 31, and a tail cord 19 is disposed between the junction box 18 and the car 13. The junction box 18 is connected to, for example, an elevator control panel (not shown). The tail cord 19 stores a power line and a control line. The tail cord 19 supplies power to the car 13 from the junction box 18 and transmits a control signal between the car 13 and the junction box 18. Has a function of performing the two-way operation. The tail cord 19 hangs between the car 13 and the junction box 18 due to its own weight, and its lower end portion is U-shaped.

  As shown in FIGS. 5A to 5C, the junction box 18 is attached to the side wall of the hoistway 31 and is fixed in position, while the car 13 is movable up and down. For this reason, the suspension length of the tail cord 19 on the side of the car 13 changes depending on the vertical position of the car 13, and the suspension load of the tail cord 19 applied to the bottom surface of the car 13 is also the position of the car 13. It depends on. As shown in FIG. 6, when the attachment position of the tail cord 19 with respect to the bottom surface of the car 13 is away from the center of gravity of the car 13, that is, the center of the car 13, the tail cord 19 is attached to the car 13. A rotational moment is generated in the car 13 due to the suspension load. For this reason, the lifting load of the car 13 changes the suspension load of the tail cord 19 on the car 13, and the rotational moment generated in the car 13 is not constant.

  Further, the suspension load of the compen- sion rope 15 applied to the bottom surface of the car 13 is also changed by changing the position of the car rope 13 in the ascending / descending direction. For this reason, when the compen- sion rope 15 is hung at a position away from the center of gravity of the car 13 in the horizontal direction, a rotational moment is generated in the car 13.

  When a rotational moment is generated in the car 13, the car 13 is swayed during traveling, and the ride quality of the passengers deteriorates. For this reason, the design is required to keep the rotational moment of the car 13 as low as possible.

  In order to solve this problem, as shown in FIG. 7, the attachment of the tail cord 19 and the attachment rope 15 to the bottom surface of the car 13 are positioned opposite to each other with respect to the center of gravity of the car 13. The method of doing is used. That is, the balance of the suspension load of the compen- sion rope 15 and the suspension load of the tail cord 19 is adjusted on the bottom surface of the car 13 with the center of gravity of the car 13 as the center, and the rotational moment generated in the car 13 is minimized. is doing. As a result, the riding comfort of passengers on the car 13 can be improved.

  By the way, in recent years, the number of floors exceeds 100 floors, and elevators may be installed in high-rise buildings. In such an elevator, the lifting distance is 400 m or more, and the weight of the tail cord 19 may increase and exceed 2t. If the weight of the tail cord 19 is large, there may be a case where the load balance in the horizontal direction with the compen- sion rope 15 on the bottom surface of the car 13 cannot be sufficiently obtained.

  For this reason, a tail cordless type elevator has been proposed in which the power supply function and control signal transmission function of the tail cord 19 are performed wirelessly (see, for example, Patent Document 1).

JP 2005-29291 A

  However, even in such a tail cordless type elevator, in order to improve the riding comfort of passengers riding on the car 13, it is required to keep the rotational moment generated in the car 13 as low as possible.

  The present invention has been made in consideration of such points, and an elevator that can reduce the rotational moment generated in the car and improve the ride comfort of passengers in the car. The purpose is to provide.

The present invention relates to an elevator in which a tail cord is not connected to a car, a hoisting machine around which a main rope is wound, a car provided at one end of the main rope, and the other end of the main rope. A counterweight provided, a compen- sion rope having both ends connected to a bottom surface of the car and a lower end portion of the counterweight, and the compen- sion rope are wound around and freely movable in the vertical direction. And a compensatory sheave for applying tension to the compen- sion rope, wherein the center of gravity position of the suspension load of the compen- sion rope with respect to the bottom surface of the car is substantially coincident with the position of the center of gravity of the car.
According to such an elevator, the center of gravity position of the suspension load of the compo rope with respect to the bottom surface of the car is substantially the same as the position of the center of gravity of the car, so that the rotational moment generated in the car due to the suspension load of the compo rope is reduced. Can be made. As a result, the ride comfort of passengers in the car can be improved.

The present invention relates to an elevator in which a tail cord is not connected to a car, a hoisting machine around which a main rope is wound, a car provided at one end of the main rope, and the other end of the main rope. A counterweight provided, a compen- sion rope having both ends connected to a bottom surface of the car and a lower end portion of the counterweight, and the compen- sion rope are wound around and freely movable in the vertical direction. A compensator for applying tension to the compen- sion rope, a buffer member installed below the car, and a receiving plate provided on the bottom surface of the car corresponding to the buffer member. A plurality of buffer members are provided, and the position of the compensator and the position of the backing plate attached to the bottom surface of the car Together comprising a elevator, characterized in that the gravity center position and the receiving position of the center of gravity of the plate of the suspension load of the pressure compensator ropes relative to the bottom surface of the car is substantially coincides with the center of gravity of each of the cab.
According to such an elevator, even when a plurality of compensatory or buffer members are provided, the position of the center of gravity of the suspension load of the compensation rope with respect to the bottom surface of the car is substantially the same as the position of the center of gravity of the car. Therefore, the rotational moment which generate | occur | produces in a cage | basket | car by the suspension load of a compensation rope can be reduced. As a result, the ride comfort of passengers in the car can be improved. Further, since the gravity center position of the receiving plate with respect to the bottom surface of the car also substantially coincides with the gravity center position of the car, the gravity center position of the buffer member can coincide with the gravity center position of the car.

In the elevator described above, the number of the compensatory is one, and the position of the center of gravity of the suspension load with respect to the bottom surface of the car by the compen- sion rope wound around the compensatory substantially matches the position of the center of gravity of the car. Preferably, a plurality of the buffer members are provided, and the plurality of receiving plates corresponding to the buffer members are attached to the bottom surface of the car so as to be point-symmetric with respect to the position of the center of gravity of the car.
According to such an elevator, even if the compen- sion rope wrapped around the compensatory is suspended from the vicinity of the center of gravity of the car and the receiving plate cannot be attached near the center of gravity of the bottom of the car Since each receiving plate is arranged point-symmetrically with respect to the center of gravity of the car and the center of gravity of the receiving plate with respect to the bottom of the car is substantially coincident with the center of gravity of the car, the buffer member is also It can arrange | position symmetrically with respect to a gravity center position.

In the above-described elevator, a plurality of the compensation sheaves are provided, and the gravity center position of the suspension load with respect to the bottom surface of the car by the respective compensation ropes wound around each compensation sheave substantially coincides with the gravity center position of the car. The number of the buffer members is one, and it is preferable that the mounting position of the receiving plate corresponding to the buffer member with respect to the bottom surface of the car substantially coincides with the position of the center of gravity of the car.
According to such an elevator, even if the backing plate is attached in the vicinity of the center of gravity position on the bottom surface of the car and the compen- sion rope cannot be suspended from the vicinity of the center of gravity position on the bottom surface of the car, Since the center of gravity position of the suspension load of the compen- sion rope is substantially coincident with the position of the center of gravity of the car, the rotational moment generated in the car due to the suspension load of the compen- sion rope can be reduced.

  According to the elevator of the present invention, the rotational moment generated in the car can be reduced, and the riding comfort of passengers in the car can be improved.

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are diagrams showing an embodiment of an elevator according to the present invention.
Among these, FIG. 1 is a schematic configuration diagram illustrating the configuration of the bottom surface of the elevator car according to the present embodiment, and FIG. 2 is a schematic diagram illustrating the configuration of the bottom surface of another elevator car according to the present embodiment. FIG. 3 is a schematic diagram showing the configuration of the bottom surface of the elevator car of still another elevator according to the present embodiment.

  The elevator 10a according to the present embodiment is of a tail cordless type in which the junction box 18 and the tail cord 19 are not provided as compared with the elevator 50 shown in FIG. It has the same configuration as the elevator 50 shown in FIG. In the present embodiment shown in FIG. 1, the same parts as those of the elevator 50 shown in FIG.

The elevator 10 a shown in FIG. 1 is of a type in which one compensatory 16 is provided and two buffer members 17 (buffers) are installed at the bottom of the hoistway 31. 1, reference numeral 25 indicates a pair of guide rails for guiding the car 13 in the up-and-down direction, and reference numeral 26 indicates a pair of guide rails for guiding the counterweight 14 in the up-and-down direction.
As shown in FIG. 1, a plurality of, specifically, 12 compen- sive ropes 16 are wound around one compen- sive sheave 16, and a bundle of a plurality of compen- sive ropes wound around the single compensatory 16 is shown. May be simply referred to as a compen- sive rope in this specification.

  In FIG. 1, the attachment position of the compen- sion rope 15 to the bottom surface of the car 13 of the elevator 10a and the attachment position of a square-shaped receiving plate (striker) 20 for receiving the buffer member 17 are shown. 1 indicates the center of gravity position of the suspension load of the compen rope bundle with respect to the bottom surface of the car 13, and reference numeral 15b indicates the position of the center of gravity of the suspension load of the compo rope bundle with respect to the lower end portion of the counterweight 14.

  In the elevator 10 a shown in FIG. 1, it is difficult to provide all the attachment positions of the compen- sion rope 15 and the respective attachment positions of the two receiving plates 20 with respect to the bottom surface of the car 13 near the center of gravity position of the car 13. This is because the compensation rope 15 and the receiving plate 20 interfere with each other. For this reason, the center of gravity position 15a of the suspension load of the compensating rope 15 with respect to the bottom surface of the car 13 is set to be substantially the same as the center of gravity of the car 13, that is, the center of the car 13, and the two receiving plates 20 are mounted. It is attached at a position that is point-symmetric with respect to the center of the car 13. Specifically, the two receiving plates 20 are arranged along the longitudinal direction of the counterweight 14 (left and right direction in FIG. 1), and the center of gravity of the car 13 is located between the pair of receiving plates 20. It is like that. Here, the attachment position of the pair of receiving plates 20 with respect to the bottom surface of the car 13 is configured not to interfere with the suspension position of the compensation rope 15.

  As described above, in the present embodiment, the gravity center position 15 a of the suspension load of the compensation rope 15 with respect to the bottom surface of the car 13 substantially coincides with the gravity center position of the car 13. For this reason, the rotational moment which generate | occur | produces in a cage | basket | car by the suspension load of the compensation rope 15 can be reduced.

  Further, in the elevator 10 a shown in FIG. 1, the mounting positions of the two receiving plates 20 with respect to the bottom surface of the car 13 are point-symmetric with respect to the center of gravity position of the car 13. For this reason, the position of the center of gravity of the pair of receiving plates 20 substantially matches the position of the center of gravity of the car 13. Thus, even when the compen- sion rope 15 is suspended from the vicinity of the center of gravity of the car 13 and the receiving plate 20 cannot be attached to the vicinity of the center of gravity of the bottom of the car 13, By making the position of the center of gravity of the receiving plate 20 substantially coincide with the position of the center of gravity of the car 13, the pair of buffer members 17 can also be arranged point-symmetrically with respect to the position of the center of gravity of the car 13.

The elevator by this invention is not limited to said aspect, A various change can be added.
Next, a modification of the elevator according to the present invention will be described with reference to FIG. In FIG. 2, the same parts as those in the embodiment shown in FIG.
The elevator 10b according to the present modification is different only in that the number of the buffer members 17 is four instead of two, and the other is substantially the same as the embodiment shown in FIG. Yes.

  As shown in FIG. 2, the four receiving plates 20 respectively corresponding to the four buffer members 17 are arranged so as to be point-symmetric with respect to the center of gravity position of the car 13, that is, the center. Here, it is preferable that these receiving plates 20 are arranged at the corners of four corners of a rectangle centering on the position of the center of gravity of the car 13, as shown in FIG. 2, rather than being arranged along a straight line. . In addition, the attachment positions of the four receiving plates 20 with respect to the bottom surface of the car 13 do not interfere with the suspension position of the compensation rope 15.

  Also in the elevator 10b having such a configuration, the positions of the four receiving plates 20 attached to the bottom surface of the car 13 are point-symmetric with respect to the position of the center of gravity of the car 13, so Is substantially coincident with the position of the center of gravity of the car 13. Thus, the compen- sation rope 15 wound around the compensatory 16 is suspended from the vicinity of the center of gravity of the car 13, and the receiving plate 20 cannot be attached to the bottom of the car 13 near the center of gravity. However, the four buffer members 17 can also be arranged symmetrically with respect to the center of gravity of the car 13 by making the position of the center of gravity of the receiving plate 20 with respect to the bottom surface of the car 13 substantially coincide with the position of the center of gravity of the car 13. become able to.

Another modification of the elevator according to the present invention will be described with reference to FIG. In FIG. 3, the same parts as those of the embodiment shown in FIG.
The elevator 10c according to this modification is different from the embodiment shown in FIG. 1 except that the number of the compensatory 16 is two and the number of the buffer members 17 is one. Has become.

  As shown in FIG. 3, the receiving plate 20 for receiving the buffer member 17 is attached to the position of the center of gravity of the car 13 on the bottom surface of the car 13, that is, the center.

On the other hand, the two compensatory 16 are provided in parallel along the longitudinal direction of the counterweight 14 (left and right direction in FIG. 3). The compen- sive rope 15 wound around each compensatory 16 is attached to the car 13 so that the position of the center of gravity of the suspension load with respect to the bottom surface of the car 13 substantially coincides with the position of the center of gravity of the car 13, that is, the center. Is stipulated.
Specifically, the compen- sion rope 15 wound around each compensatory 16 is attached on a straight line passing through the center of the bottom surface of the car 13 so as not to interfere with the receiving plate 20.

  As described above, in the elevator 10c of the present modification, the receiving plate 20 corresponding to the buffer member 17 is attached in the vicinity of the position of the center of gravity on the bottom surface of the car 13, and the compen- sion rope 15 is wound around each of the plurality of compensatory sheaves 16. Even when the vehicle cannot be suspended from the vicinity of the center of gravity of the bottom surface of the car 13, the position of the center of gravity of the suspension load of the compensation rope 15 with respect to the bottom surface of the car 13 is made substantially coincident with the position of the center of gravity of the car 13. . For this reason, the rotational moment which generate | occur | produces in the passenger car 13 by the suspension load of the compensation rope 15 can be reduced.

  Another modification of the elevator according to the present invention will be described. In this modification, the number of the compensatory 16 disposed in the elevator and the number of the buffer members 17 are plural (not shown). In this case, the mounting position of the compensation rope 15 and the mounting position of the receiving plate 20 with respect to the bottom surface of the car 13 are different from each other. Further, the gravity center position of the suspension load of the compen- sion rope 15 with respect to the bottom surface of the car 13 substantially coincides with the gravity center position of the car 13, that is, the center, and the gravity center position of the receiving plate 20 is also the center of gravity position of the car 13. It almost matches.

  According to such an elevator, the center of gravity position of the suspension load of the compen- sion rope 15 with respect to the bottom surface of the car 13 substantially coincides with the position of the center of gravity of the car 13, so that the car 13 is generated by the suspension load of the compen- sion rope 15. Rotational moment can be reduced. As a result, the ride comfort of passengers on the car 13 can be improved. Further, since the position of the center of gravity of the receiving plate 20 with respect to the bottom surface of the car 13 substantially coincides with the position of the center of gravity of the car 13, the position of the center of gravity of the buffer member 17 can be made coincident with the position of the center of gravity of the car 13.

It is a schematic block diagram which shows the structure of the bottom face of the elevator car of this Embodiment. It is a schematic block diagram which shows the structure of the bottom face of the elevator car of the other elevator of this Embodiment. It is a schematic block diagram which shows the structure of the bottom face of the elevator car of the further another elevator of this Embodiment. It is a perspective view which shows the structure of a general elevator. (A)-(c) is explanatory drawing which shows the positional relationship of a junction box, a passenger car, and a tail cord. It is a figure for demonstrating the rotational moment which generate | occur | produces in a passenger car. It is a schematic block diagram which shows the structure of the bottom face of the conventional elevator car.

Explanation of symbols

10a, 10b, 10c Elevator 11 Hoisting machine 12 Main rope 13 Car 14 Counterweight 15 Compen rope 15a, 15b Center of gravity position 16 of lifting load Compensation 17 Buffer member 18 Junction box 19 Tail cord 20 Receiving plate 25, 26 Guide rail 30 Machine room 31 Hoistway 50 Elevator

Claims (4)

An elevator with no tail cord connected to the car,
A hoisting machine around which the main rope is wound,
A riding car provided at one end of the main rope,
A counterweight provided at the other end of the main rope;
A compen- sion rope having both ends connected to the bottom of the car and the lower end of the counterweight;
The compensatory rope that is wrapped around and is movable in the vertical direction and gives tension to the compenand rope by its own weight;
With
An elevator characterized in that a gravity center position of a suspension load of the compen- sion rope with respect to a bottom surface of the car substantially coincides with a gravity center position of the car. An elevator with no tail cord connected to the car,
A hoisting machine around which the main rope is wound,
A riding car provided at one end of the main rope,
A counterweight provided at the other end of the main rope;
A compen- sion rope having both ends connected to the bottom of the car and the lower end of the counterweight;
The compensatory rope that is wrapped around and is movable in the vertical direction and gives tension to the compenand rope by its own weight;
A cushioning member installed below the car;
A receiving plate provided on the bottom surface of the car corresponding to the buffer member;
With
A plurality of the compensatory or the cushioning members are provided, the mounting position of the compo rope with respect to the bottom surface of the car and the mounting position of the receiving plate are different, and the center of gravity position of the suspension load of the compo rope with respect to the bottom surface of the car An elevator characterized in that a gravity center position of the receiving plate substantially coincides with a gravity center position of the car. The number of the compensatory is one, and the position of the center of gravity of the suspension load with respect to the bottom surface of the car by the compen- sion rope wound around the competive substantially matches the position of the center of gravity of the car.
3. A plurality of the buffer members are provided, and a plurality of receiving plates corresponding to the buffer members are attached to the bottom surface of the car so as to be point-symmetric with respect to the center of gravity of the car. Elevator. A plurality of the compensation sheaves are provided, and the position of the center of gravity of the suspension load with respect to the bottom surface of the car by the respective compensation ropes wound around each of the compensation sheaves substantially coincides with the position of the center of gravity of the car.
The number of the buffer members is one, and the mounting position of the receiving plate corresponding to the buffer member with respect to the bottom surface of the car is substantially coincident with the position of the center of gravity of the car. Elevator.

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