JP2014172725A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device capable of braking the vibration of a tail cord properly and preventing a main rope or the like from being caught by the wall surface of a hoist way at a normal travel time.SOLUTION: An elevator device 10 comprises: a riding cage 2 for moving upward and downward in a hoistway 1; and a tail cord 4 connected to the riding cage 2 and fixed on the wall surface 3 of the hoistway 1. The tail cord 4 has a magnetic material metal 5 attached thereto, and the wall surface 3 is equipped with an electromagnet 6 for absorbing the magnetic material metal 5 of the tail cord 4. When a long-period vibration sensor 21 senses a long-period vibration, a control part 20 actuates the electromagnet 6 so that the magnetic metal 5 is adsorbed by the electromagnet 6 thereby to fix the tail cord 4 on the wall surface 2 of the hoistway 1.

Description

  The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus having a tail cord.

  In a conventional elevator apparatus, one or more tail cords that transmit electricity and signals are provided to a car that moves in a hoistway. One end of the tail cord is connected to a relay box installed in the middle wall of the hoistway, or is hung directly from the machine room at the upper part of the hoistway, and is attached to the wall or rail to the intermediate point where it does not move It is fixed by the tail cord fixing arm. The other end of the tail cord is fixed to the car, and a U-shape is formed at the lower end and hangs down in the hoistway. Since the tail cord from the center of the hoistway to the car moves up and down with the car, it cannot be fixed and its swing cannot be controlled.

  For this reason, the tail cord resonates with long-period vibration generated by an earthquake or strong wind, so that there are many problems that the tail cord is caught by a hoistway device such as a rail bracket and disconnected.

  In order to prevent this, a method has been developed in which a device is attached so that the hoistway and the tail cord attract each other by magnetic force, and the tail cord is fixed to the hoistway wall. However, since it attracts by the magnetic force, the magnetic force generated when the tail cord moves away from the hoistway wall may cause vibration. In addition, there is a method of attaching a vibration damping device for suppressing vibration when the hoistway wall vibrates in the horizontal direction to the hoistway wall at a predetermined interval. However, although the tail cord is damped, there is a protrusion on the hoistway wall, which may cause other articles such as ropes to get caught.

JP-A-5-254757 JP-A-6-321457 JP-A-6-234482

  The present invention has been made in consideration of such points, and an elevator apparatus that can appropriately dampen the tail cord and that does not cause the main rope or the like to be caught on the hoistway during normal traveling is provided. The purpose is to provide.

  The present invention includes a car that moves up and down in the hoistway, a tail cord having one end connected to the car and the other end fixed to the wall surface of the hoistway and having a U-shaped portion at the lower part. A magnetic metal is attached to the wall surface of the hoistway of the cord, an electromagnet that adsorbs the magnetic metal of the tail cord is provided on the wall of the hoistway, and a long-period vibration sensor that senses long-period vibration is provided, An elevator apparatus characterized in that an electromagnet is operated by a control unit based on a detection signal from a long-period vibration sensor, and a tail cord is attracted to a wall surface of a hoistway.

  The present invention includes a car that moves up and down in the hoistway, a tail cord having one end connected to the car and the other end fixed to the wall surface of the hoistway and having a U-shaped portion at the lower part. A magnetic metal is attached to the wall surface of the hoistway of the cord, and an electromagnet that adsorbs the magnetic metal of the tail cord is provided on the wall of the hoistway. When the control unit stops the car during normal driving, the electromagnet The elevator apparatus is characterized in that the tail cord is attracted to the wall surface of the hoistway by being operated.

  The present invention includes a car that moves up and down in the hoistway, one end connected to the car, the other end fixed to the wall of the hoistway, and a tail cord having a U-shaped part at the lower part. The elevator apparatus is characterized in that a shock absorbing material that abuts against the tail cord is provided on a wall surface of the road, and the tail cord abuts against the shock absorbing material to generate a frictional force between the tail cord and the shock absorbing material.

  The present invention is an elevator apparatus characterized in that a projection is provided on a surface of the tail cord on the side of the cushioning material, and the frictional force with the cushioning material is further increased by the projection.

  The present invention includes a car that moves up and down in the hoistway, a tail cord having one end connected to the car and the other end fixed to the wall surface of the hoistway and having a U-shaped portion at the lower part. An elevator apparatus characterized in that a protrusion is provided on the wall surface side of the hoistway of the cord, and a wire mesh is provided between the wall surface of the hoistway and the tail cord to engage with the protrusion of the tail cord. .

  As described above, according to the present invention, the vibration of the tail cord can be appropriately braked, and the main rope and the like are not caught on the wall surface of the hoistway during normal traveling.

FIG. 1 is a diagram showing a first embodiment of an elevator apparatus according to the present invention. FIG. 2 is a flowchart of the elevator apparatus according to the present invention. FIG. 3 is a flowchart showing a second embodiment of the elevator apparatus according to the present invention. FIG. 4 is a diagram showing a third embodiment of an elevator apparatus according to the present invention. 5 is a view taken in the direction of arrow A in FIG. FIG. 6 is a view showing a fourth embodiment of the elevator apparatus according to the present invention. FIG. 7 is a diagram showing a fifth embodiment of an elevator apparatus according to the present invention. FIG. 8 is an enlarged view of a portion B in FIG.

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. 1 and 2 are views showing a first embodiment of an elevator apparatus according to the present invention.

  1 and 2, the elevator apparatus 10 includes a car 2 that moves up and down in the hoistway 1, and a tail cord 4 that is connected to the car 2.

  Of these, the car 2 is driven by the hoisting machine 13 through the main rope 7 and the drive sheave 12 to move up and down in the hoistway 1. One end of the tail cord 4 is connected to the car 2, the other end is fixed to the wall surface 3 of the hoistway 1, and a U-shaped portion 4a is formed at the lower portion.

  A magnetic metal 5 is attached to a surface of the tail cord 4 facing the wall surface 3 of the hoistway 1. Further, an electromagnet 6 that attracts the magnetic metal 5 of the tail cord 4 is embedded in the wall surface 3 of the hoistway 1.

  Furthermore, the hoisting machine 13 is driven and controlled by the control unit 20.

  Next, the operation of the embodiment having such a configuration will be described with reference to FIGS.

  First, during normal operation, the hoisting machine 13 is driven and controlled by the control unit 20, and the car 2 moves up and down in the hoistway 1. During normal operation, the electromagnet 6 is not operated without being energized.

  When a long-distance earthquake or strong wind occurs, the long-period vibration detector 21 senses the long-period vibration, and the long-period vibration control motion is started. In this case, when the movement of the car 2 stops according to the routine, the control unit 20 energizes the electromagnet 6 and pulls and fixes the magnetic metal 5 of the tail cord 4 to the wall surface 3 of the hoistway 1 by the magnetic force. After a certain period of time has passed, the control unit 20 stops energizing the electromagnet 6 and then returns to the routine for resuming the long-period vibration control operation to the normal operation.

  According to the present embodiment, when an earthquake or strong wind occurs and the long-period vibration detector 21 senses long-period vibration, the control unit 20 energizes the electromagnet 6 to operate the tail cord 4 in the hoistway 1. It can be fixed to the wall surface 3. For this reason, the tail cord 4 can be fixed to the wall surface 3 of the hoistway 1 in both the horizontal direction and the vertical direction. In addition, since the electromagnet 6 is activated only when the long-period vibration sensor 21 senses the long-period vibration, the tail cord 4 is not fixed to the wall surface 3 of the hoistway 1 unless the long-period vibration sensor 21 is activated. In addition, there is no problem in raising and lowering the car 2 during normal operation.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment shown in FIGS. 1 and 3 differs only in the control flow by the control unit 20, and the other configuration is substantially the same as the first embodiment shown in FIG.

  As shown in FIG. 3, after the car 2 stops during normal traveling, the control unit 20 energizes the electromagnet 6 and the tail cord 4 is fixed to the wall surface 3 of the hoistway 1. When a certain period of time elapses with the car stopped, the controller 20 stops energization of the electromagnet 6 and then returns to the normal travel routine. When traveling of the car 2 starts before a certain period of time has elapsed, the controller 20 stops energization of the electromagnet 6 before starting traveling, and releases the fixed state of the tail cord 4 and the wall surface 3 of the hoistway 1. After that, the vehicle starts traveling and returns to the normal traveling routine. Thus, by fixing the tail cord 4 to the wall surface 3 of the hoistway 1 only when the car 2 is stopped, it is possible to prevent the tail cord 4 from vibrating due to the influence of magnetic force during normal traveling.

Third Embodiment Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. 4 to 6 are views showing a third embodiment of the elevator apparatus according to the present invention.

  4 to 6, the elevator apparatus 10 includes a car 2 that moves up and down in the hoistway 1, and a tail cord 4 that is connected to the car 2.

  Of these, the car 2 is driven by the hoisting machine 13 through the main rope 7 and the drive sheave 12 to move up and down in the hoistway 1. One end of the tail cord 4 is connected to the car 2, the other end is fixed to the wall surface 3 of the hoistway 1, and a U-shaped portion 4a is formed at the lower portion.

  As shown in FIGS. 4 and 5, a buffer material 8 that abuts the tail cord 4 is provided on the wall surface 3 of the hoistway 1. The buffer material 8 is made of a sponge or the like, and is made of a material softer than the tail cord 4.

  Further, as shown in FIG. 5, the cushioning material 8 has a trapezoidal shape when viewed from above. For example, even if the main rope 7 is in contact with the main rope 7 by mistake, the main rope 7 is not caught by the cushioning material 8. In FIG. 5, the tail cord 4 abuts at a substantially central portion of the shock absorbing material 8, and the tail cord 4 is braked by the frictional force with the shock absorbing material 8 and more particularly in the horizontal direction.

  4 and 5, during normal operation, the tail cord 4 abuts against the cushioning material 8 due to its own weight, and the tail cord 4 is braked particularly in the horizontal direction by the frictional force between the tail cord 4 and the cushioning material 8. Is done.

  Further, when the tail cord 4 vibrates in the vertical direction with respect to the wall surface 3 of the hoistway 1, the tail cord 4 may be hit against the wall surface 3 of the hoistway 1. Even in such a case, the tail cord 4 can be flexibly received by the buffer material 8, and damage to the tail cord 4 can be prevented.

  Next, a modification of the second embodiment will be described with reference to FIG. In the modification shown in FIG. 6, a metal projection 9 is provided on the wall 3 side surface of the hoistway 1 of the tail cord 4.

  In FIG. 6, by providing the projection 9 on the tail cord 4, the frictional force between the tail cord 4 and the cushioning material 8 can be further increased. The protrusion 9 provided on the tail cord 4 has a flat surface at the tip. The protrusion 9 has a wedge-shaped side section.

  Thus, since the projection has a flat surface at the tip and has a wedge-shaped side section, the projection 9 does not damage the cushioning material 8 when the tail cord 4 is pressed against the cushioning material 8. 8 is pushed into.

  Further, when the projection 9 is detached from the cushioning material 8 along the vertical direction, the projection 9 does not catch on the cushioning material 8 because the projection 9 has a wedge-shaped side section.

Fourth Embodiment Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. 7 and 8 are views showing a fourth embodiment of the elevator apparatus according to the present invention.

  7 and 8, the elevator apparatus 10 includes a car 2 that moves up and down in the hoistway 1 and a tail cord 4 that is connected to the car 2.

  Of these, the car 2 is driven by the hoisting machine 13 through the main rope 7 and the drive sheave 12 to move up and down in the hoistway 1. One end of the tail cord 4 is connected to the car 2, the other end is fixed to the wall surface 3 of the hoistway 1, and a U-shaped portion 4a is formed at the lower portion.

  Further, a metal projection 9 is provided on the wall 3 side surface of the hoistway 1 of the tail cord 4. Further, a wire mesh 11 is provided between the wall surface 3 of the hoistway 1 and the tail cord 4 to engage with the protrusion 9 of the tail cord 4.

  As shown in FIGS. 7 and 8, the wire mesh 11 is attached to the wall surface 3 of the hoistway 1 via an arm 11a.

  When the car 2 is approaching the wall surface 3 of the hoistway 1, the wire mesh 11 can be directly attached to the wall surface 3 without providing the arm 11a. On the other hand, when the car 2 is away from the wall surface 3 of the hoistway 1, it is necessary to attach a wire mesh 11 to the wall surface 3 via a relatively long arm 11 a.

  4 and 5, the tail cord 4 abuts on the wire net 11 due to its own weight during normal operation. In this case, the projection 9 of the tail cord 4 engages with the wire mesh 11, and the tail cord 4 is particularly damped in the horizontal vibration.

  Here, as shown in FIG. 8, the shape of the protrusion 9 on the tail cord 4 side is considerably smaller than the mesh interval l of the wire mesh 11. For this reason, the protrusion 9 of the tail cord 4 can be smoothly detached from the wire mesh 11 during normal operation, so that even if the wire mesh 11 and the protrusion 9 of the tail cord 4 are engaged, the normal operation of the elevator apparatus is performed. Will not cause any problems.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 3 Wall surface 4 Tail cord 5 Magnetic metal 6 Electromagnet 7 Main rope 8 Buffer material 9 Protrusion 10 Elevator device 11 Wire net 11a Arm 20 Control part 21 Long period vibration detector

Claims (5)

A car that goes up and down in the hoistway,
A tail cord having one end connected to the car and the other end fixed to the wall of the hoistway, and having a U-shaped portion at the lower part;
Magnetic metal is attached to the wall of the tail cord hoistway,
An electromagnet is provided on the wall of the hoistway to attract the magnetic metal of the tail cord.
A long-period vibration sensor for detecting long-period vibration is provided,
An elevator apparatus characterized in that an electromagnet is actuated by a controller based on a sensing signal from a long-period vibration sensor to attract a tail cord to a wall surface of a hoistway. A car that goes up and down in the hoistway,
A tail cord having one end connected to the car and the other end fixed to the wall of the hoistway, and having a U-shaped portion at the lower part;
Magnetic metal is attached to the wall of the tail cord hoistway,
An electromagnet is provided on the wall of the hoistway to attract the magnetic metal of the tail cord.
An elevator apparatus characterized in that the control unit operates an electromagnet to attract the tail cord to the wall of the hoistway when the car is stopped during normal traveling. A car that goes up and down in the hoistway,
A tail cord having one end connected to the car and the other end fixed to the wall of the hoistway, and having a U-shaped portion at the lower part;
The wall surface of the hoistway is provided with a cushioning material that comes into contact with the tail cord,
An elevator apparatus characterized in that a tail cord abuts against a cushioning material to generate a frictional force between the tail cord and the cushioning material.   4. The elevator apparatus according to claim 3, wherein a protrusion is provided on a surface of the tail cord on the side of the shock absorber, and the protrusion further increases a frictional force with the shock absorber. A car that goes up and down in the hoistway,
A tail cord having one end connected to the car and the other end fixed to the wall of the hoistway, and having a U-shaped portion at the lower part;
Projections are provided on the wall side of the tail cord hoistway,
An elevator apparatus characterized in that a wire mesh is provided between a wall surface of a hoistway and a tail cord to engage with a protrusion of the tail cord.

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