JPH11171424A - Main rope swing preventive device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an elevator main rope from striking direct against the wall surfaces of the hoistway or entwining even if swaying about at an earthquake. SOLUTION: A main rope swing preventive device comprises a main rope 3 looped over a driving shave 1 with its one end fixed to a car 5 and the other end to a counterweight 6, a plurality of car-side and counterweight-side swing preventive plates 11 and 12 through which the car-side 3a and counterweight-side 3b of the main rope 3 are passed respectively, car-side and counterweight-side wires for joining the car-side and counterweight-side swing preventive plates 11 and 12 together with predetermined intervals held therebetween respectively, a housing box 7 which holds the swing preventive plates 11 and 12 and the bottom plate of which is made openable, a lock means for normally locking up the bottom plate, a seismoscope for detecting earthquake secondary waves, and a control panel for outputting an unlocking command to the lock means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator main rope steady rest device which prevents an elevator main rope from swinging and hitting a hoistway wall during an earthquake.

[0002]

2. Description of the Related Art Conventionally, elevator main ropes are:
The main rope is hung on a drive sheave provided in a machine room, and one end of the main rope is fixed to a car and the other end is fixed to a counterweight. When the drive sheave of the hoist is rotated, the car moves up and down via the main rope.

[0003]

When an earthquake occurs, the main rope hung on the drive sheave swings greatly and hits the wall of the hoistway. Since the main rope is made of steel, if it hits the wall of the hoistway, it will break this wall, the electrical equipment hanging on the wall, and the main rope will become entangled with each other. There is a problem that it takes time for recovery work.

[0004] It is an object of the present invention to prevent the main rope from directly hitting the wall surface of the hoistway and not being entangled even if the main rope shakes greatly during an earthquake.

[0005]

In order to achieve the above object, according to the present invention, a sheave is mounted on a sheave, one end of which is fixed to a car and the other end of which is fixed to a counterweight. The main rope, the plurality of steady rest plates on the car side and the counterweight side inserted into the car side and the counterweight side of the main rope, and the plurality of steady rest plates on the car side and the counterweight side are separated by a predetermined distance. A wire on the car side and the counterweight side to be connected to each other, a storage box in which the steady plate is stored and the bottom plate is openable and closable, locking means for locking the bottom plate so as to be always closed, An earthquake detector that detects waves,
A control panel for outputting a lock release command to the lock means, and when an earthquake S wave is detected by the earthquake sensor, a lock release command is output from the control panel to the lock means, and the bottom plate of the storage box is closed. The structure is such that the steady rest plate hangs down while being connected to the wire from inside.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 6 are views showing an embodiment of a main rope steady rest device for an elevator according to the present invention.

In FIG. 1, reference numeral 1 denotes a drive sheave of a hoist provided in a machine room 2 of an elevator, and a main rope 3 is hung on the drive sheave 1. One end of the main rope 3 is fixed to a car 5 movably arranged in the hoistway 4 so as to be vertically movable, and the other end is fixed to the counterweight 6. For this reason, one end of the main rope 3 is a car side 3a and the other end is a counterweight side 3b.

An opening 2a through which the main rope 3 is inserted is provided on the lower surface of the machine room 2, and a storage box 7 is provided below the opening 2a. The storage box includes a top plate 8, a side plate 9, and a bottom plate 10 as shown in FIGS.
The car side 3a and the counterweight side 3b of the main rope 3 are formed with through holes 8 formed in the top plate 8 and the bottom plate 10.
a and 10a.

The storage box 7 contains a large number of approximately donut-shaped nylon anti-vibration plates 11 and 12, and the inside of each of the plates 11 and 12 is the car side 3 a of the main rope 3. , The counterweight side 3b passes through. A large number of steady plates 11 and 12 are connected to each other by wires 13 and 14 at predetermined intervals, and the uppermost plates 11 and 12 are connected to a top plate 8.
Caught on

The bottom plate 10 of the storage box 7 comprises an openable and closable left door 10b and a right door 10c, and an engagement piece 15 for engaging with the left door 10b is attached to the right door 10c. . The left door part 10b and the right door part 10c are combined to form the right door part 1
When 0c is locked by the lock means 16, the left and right door portions 10b and 10c are locked in a closed state.

As shown in FIG. 4, the lock means 16 is provided on the side plate 9 of the storage box 7 and has a lock pin 16a driven by a solenoid. The lock pin 16a is a lock piece 17 attached to the right door 10c.
And can be engaged. When the lock means 16 is operated, the lock pin 16a separates from the lock piece 17 and the left and right door portions 10 are moved.
b and 10c can be opened.

The locking means 16 operates according to an instruction from a control panel 18, to which a signal from an earthquake detector 19 is input. The seismic detector 19 is of the S-wave seismic type, quickly detects the main shock mainly composed of horizontal motion at the time of the occurrence of an earthquake, compares the detected signal with a preset two-step level, and outputs the signal as a level value. , A contact signal is output.

When the earthquake sensor 19 senses an S wave of an earthquake, a signal is output from the earthquake sensor 19 to the control panel 18, and a lock release command is output from the control panel 18 to the locking means 16. The lock means 16 operates to open the left and right door portions 10b and 10c.

Then, as shown in FIGS. 5 and 6, a large number of steady rest plates 11, 12 are
It will hang down in the hoistway 4 while maintaining a predetermined interval via the 3 and 14. This allows the main rope 3
The car side 3a and the counterweight side 3b are surrounded by the steady rest plates 11,12. For this reason, the car side 3a of the main rope 3 and the counterweight side 3b
Even if it shakes greatly, it will be prevented from directly hitting the wall surface of the hoistway 4, and the car side 3a and the counterweight side 3b will not be entangled.

Although the present invention has been described as applied to a hoist type elevator, it goes without saying that the present invention can be applied to a linear motor type elevator.

[0016]

As described above, according to the present invention,
When the S-wave of the earthquake is detected by the earthquake detector, an unlock command is output from the control panel to the lock means, and the bottom plate of the storage box is opened, and the steady rest plate is dropped from the inside while being connected to the wire. As a result, even if the main rope shakes greatly during an earthquake, it is prevented from directly hitting the wall of the hoistway, and no entanglement occurs, so that restoration work can be performed quickly.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a main rope steady rest device for an elevator according to the present invention.

FIG. 2 is a perspective view of a storage box.

FIG. 3 is a sectional view of a storage box.

FIG. 4 is a cross-sectional view of a lock unit.

FIG. 5 is a sectional view showing a state where the bottom plate of the storage box is opened.

FIG. 6 is a perspective view of a steady rest plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Drive sheave, 3 ... Main rope, 5 ... Basket, 6 ... Counterweight, 7 ... Storage box, 11, 12 ... Steady-stop plate, 13, 14 ... Wire, 16 ... Locking means, 18
... control panel, 19 ... earthquake detector.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Haruo Daidoji 2700-1 Miguchi, Koike, Shibayama-cho, Sanmu-gun, Chiba Pref. Japan Otis Elevator Co., Ltd.

Claims (1)

[Claims] 1. A main rope hung on a sheave, one end of which is fastened to a car and the other end of which is fastened to a counterweight, a car side and a counterweight which are inserted into the car side and the counterweight side of the main rope. A bottom plate in which the plurality of steady rest plates on the weight side, the plurality of steady rest plates on the car side and the balancing weight side for connecting the plurality of steady rest plates on the car side and the balancing weight side by a predetermined distance, and the steady rest plate are housed. A storage box that is openable and closable, and a lock unit that locks the bottom plate so as to be always closed,
A control panel for outputting an unlocking command to the locking means, wherein the control panel locks the locking means from the control panel when an earthquake S wave is detected by the earthquake sensor; An elevator main rope steady rest device, wherein a release command is output, and the bottom plate of the storage box is opened and the steady rest plate is dropped down from the inside while being connected to the wire.