JP2004262645A - Elevator system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rescue a passenger and start restoration work of a control panel in a short time even if a balance weight is heavy when a car is heaved upward and stops in a shaft due to some reason and the passenger is shut up in the car. <P>SOLUTION: When the car 2 stops in an upper part of the shaft and the passenger is shut up in the car 2 or restoration of the control panel 8 becomes necessary, a part of the balance weight 6 provided in an elevator mechanism 4 is hoisted to reduce weight of the whole balance weight 6 and move the car 2 to the nearest story. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lift-type elevator system, and more particularly to an elevator system without a rooftop machine room in which a hoist, a control panel, and the like are arranged in a hoistway.
[0002]
[Prior art]
In recent years, the hoisting machine that connects the riding car and the counterweight with a rope and transmits the driving force to the rope, and the control panel that has been installed in the rooftop machine room, etc., are installed in the hoistway. Eliminating the rooftop machine room, alleviating the sunshine problem, freeing the layout of the building where the elevator mechanism is installed, and reducing the strength of the car body, the rooftop machine roomless type elevator system has become mainstream. I have.
[0003]
Further, in such an elevator system, the weight load of the car increases due to an increase in the number of occupants of the car and optional specifications for the cab, and the fate of the vine-type elevator system accompanying this causes The weight tends to increase.
[0004]
[Patent Document 1]
JP 2000-255941 A
[Patent Document 2]
JP 2001-80837 A
[Problems to be solved by the invention]
By the way, a hoisting machine or a control panel is a car, and a counterweight connected to this car is a roof-top machine room-less crane-type elevator system installed in a hoistway. When the car is pushed up and stopped in the hoistway and the passengers in the car are locked, if the number of passengers in the car is more than half of the number of cars in the car, the brake of the hoist is released. You can move the car to the nearest floor just by letting it go, but when the number of occupants is less than half, raise the counterweight side, pull out the counterweight inside the counterweight, It was necessary to make the counterweight and the balance unbalanced.
[0007]
In addition, when the car stops due to an electrical failure or the like, the same operation as described above can be performed with the inspector riding on the car, and the work on the control panel can be performed. After moving the car to the position, restore the control panel.
[0008]
However, such a work can be easily performed by using a chain block or the like when the car is small and the weight of the counterweight to be connected to the car is small, but in recent years, If the weight of the car increases and the weight of the counterweight itself increases due to an increase in the number of passengers and diversification of services such as in elevator systems, etc., the counterweight can be easily adjusted. There was a problem that it could not be lifted, and it took time to rescue the occupants and restore the control panel.
[0009]
The present invention has been made in view of the above circumstances, and for some reason, when a car is pushed up and stopped in a hoistway and a passenger is trapped in the car, even if the counterweight is heavy, a short time is required. Accordingly, it is an object of the present invention to provide an elevator system capable of rescuing an occupant or starting a control panel recovery operation.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in claim 1, a car and a counterweight of a weight corresponding to the weight of the car are arranged in the hoistway so as to be able to move up and down freely. In an elevator system in which a connected rope is run and the car is lifted and lowered in a hanging manner, a part of a plurality of counterweights constituting the counterweight is lifted by a counterweight lifting mechanism, Lower the car. As a result, for some reason, when the car is pushed up and stopped in the hoistway and passengers are trapped in the car, even if the counterweight is heavy, the occupants can be rescued in a short time. Or start the recovery operation of the control panel.
[0011]
According to a second aspect of the present invention, in the elevator system according to the first aspect, as the counterweight, a counter case that moves up and down along the hoistway and a gap is formed on an upper side of the counter case. A plurality of counterweights inserted into the countercase so as to be able to move up and down freely are used. With this, for some reason, the car is pushed up in the hoistway and stopped, and when passengers are trapped in the car, even if the counterweight is heavy, several counterweights are raised. With only a small force, the occupants can be rescued and the control panel can be restored.
[0012]
According to a third aspect of the present invention, in the elevator system according to any one of the first and second aspects, the counterweight pulling mechanism is mounted on a counterweight pulley mounted on a predetermined portion of the hoistway, and mounted on the counterweight. A counterweight hook, a chain block fixed below the counterweight pulley in the hoistway, and a counterweight pull connecting the chain block and the counterweight hook via the counterweight pulley. And use the rope. As a result, for some reason, when the car is pushed up in the hoistway and stopped, and passengers are trapped in the car, even if the counterweight is heavy, the occupant can use only ordinary equipment. Can be rescued, or the control panel restoration work can be started.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a perspective view showing an embodiment of an elevator system according to the present invention.
[0014]
An elevator system 1 shown in this figure raises and lowers a car 2 and stops at each floor, and an elevator mechanism 4 for getting on and off an occupant via a three-way frame 3 and an elevator mechanism 4 for some reason, for example, mechanical failure or electric When the car 2 stops at the upper part of the hoistway 5 due to a mechanical failure, a part of the counterweight 6 provided in the elevator mechanism 4 is lifted, and the car 2 is moved to the nearest floor. Operation of the car 2 in accordance with the counterweight lifting mechanism 7 to be moved, the operation panel provided in the three-way frame 3 of each hall on each floor, and the call information output from the operation panel provided in the car 2 And a control panel 8 for controlling the car 2 in accordance with each call information outputted from an operation panel provided on each floor, an operation panel provided in the car 2 and the like. It is stopped, moving the occupant to the destination floor. The elevator mechanism 4 is provided when the car 2 stops at the upper part of the hoistway for some reason and passengers are trapped in the car 2 or when the control panel 8 needs to be repaired. A part of the counterweight 6 is lifted, and the car 2 is moved to the nearest floor.
[0015]
The elevator mechanism 4 includes a car 2 that is arranged to be able to move up and down along the hoistway 5, a pair of counterweight guide rails 9 that is arranged along the hoistway 5, and a pair of counterweight guide rails 9. A counterweight 6 which is attached to be able to move up and down freely, and one end side is fixed to a rope hitch (car side rope hitch) 10 above the hoistway 5 and the other end is a rope hitch above the counterweight guide rail 9 (the counterweight side). With the car 2 via a sheave 12 under each car fixed to the lower part of the car 2 and a counterweight sheave 13 fixed to the upper part of the counterweight 6. A rope 14 for connecting the weight 6, a hoisting machine 15 fixed to the upper side of the hoistway 5 and running the rope 14 based on an instruction from the control panel 8 to raise and lower the car 2, In the upper machine 15 And a hoisting machine brake 16 that brakes the rope 14 and stops the car 2 at the destination floor when the car 2 approaches the destination floor. Based on this, the hoisting machine 15, the hoisting machine brake 16 and the like are operated to raise and lower the car 2 to the destination floor, stop the car 2, and get the occupant on and off.
[0016]
In addition, the counterweight lifting mechanism 7 includes a pair of counterweight lifting hanging jigs 17 fixed to the lower portion of each counterweight guide rail 9 and a central portion of each counterweight guide rail 9, respectively. 2 is inserted into the counter case 20 so that a gap 21 is formed on the upper side of the counter weight 20 forming the counterweight 6 as shown in the schematic view of FIG. Of the respective counterweights 22, a pair of counterweight hooks 23 attached to a predetermined counterweight 22, for example, the fourth counterweight 22 from the top, and the car 2 stop at the upper part of the hoistway. When passengers are trapped in the car 2 or when the control panel 8 needs to be repaired, A pair of chain blocks 18 whose ends are fixed to each counterweight lifting hanging jig 17, each counterweight lifting pulley 19, and each lifting formed on the counter case 20 as shown in the partially enlarged side view of FIG. 3. A pair of counterweight pulling ropes 25 each having one end fixed to each counterweight hook 23 and the other end fixed to each chain block 18 via the guide grooves 24 are provided.
[0017]
Then, for some reason, when the car 2 stops at the upper part of the hoistway 5 and the passengers in the car 2 are trapped, a pair of chain blocks 18 are brought into the hoistway 5 and each of these chains After the upper end side of the block 18 is connected to each end of the rope 25 for raising the counterweight, the lower end side of each chain block 18 is fixed to the hanging jig 17 for raising the counterweight, and the chain block 18 raises the counterweight. Each other end of the rope 25 is pulled down, and each counterweight 22 above the counterweight 22 to which each counterweight hook 23 is fixed until the uppermost counterweight 22 abuts on the upper end of the counter case 20. And raise the weight of the entire counterweight 6 To Gensa.
[0018]
Thus, even when the number of passengers in the car 2 is less than half the number of passengers, the weight of the car 2 is made larger than the weight of the counterweight 6 and the auxiliary operation panel 26 attached to the three-way frame 3 of the hall. Is operated and the hoisting machine brake 16 of the hoisting machine 15 is released, the counterweight 6 rises until the counterweight 22 to which the counterweight hook 23 is fixed hits the counterweight 22 immediately below. And the car 2 descends.
[0019]
Thereafter, the above-described operation is repeated, and the car 2 is lowered to the nearest floor, and the occupant is lowered.
[0020]
Also, when an electric failure occurs in the control panel 8 or the like and the car stops moving, the other ends of the counterweight lifting ropes 25 are pulled down by the respective chain blocks 18 so as to be at the highest position. Until a certain counter weight 22 abuts on the upper end of the counter case 20, each counter weight 22 above the counter weight 22 to which each counter weight hook 23 is fixed is lifted, and the weight of the entire counterweight 6 is reduced. .
[0021]
Thereby, even when there is no passenger in the car 2, the weight of the car 2 side is made larger than the weight of the counterweight 6 side, and the auxiliary operation panel 26 attached to the three-way frame 3 is operated, When the hoisting machine brake 16 of the hoisting machine 15 is released, the counterweight 6 rises until the counterweight 22 to which the counterweight hook 23 is fixed hits the counterweight 22 immediately below, and the car 2 Descends.
[0022]
Hereinafter, when the above-described operation is repeated and the ceiling portion of the car 2 reaches a height corresponding to the control panel 8, an inspector enters the car 2, and the control panel 8 is inspected and restored. And so on.
[0023]
Thus, in this embodiment, when the car 2 stops at the top of the hoistway and passengers are trapped in the car 2 or when the control panel 8 needs to be repaired, the elevator mechanism 4 The weight of the entire counterweight 6 is reduced by lifting a portion of the counterweight 6 provided in the car, and the car 2 is moved to the nearest floor. When the passenger is pushed up and stopped in the hoistway 5 and trapped in the car 2, even if the counterweight 6 is heavy, it is possible to rescue the occupants in a short time or to recover the control panel 8. Work can be started.
[0024]
Also, in this embodiment, when the car 2 stops at the upper part of the hoistway and passengers are trapped in the car 2 or when the control panel 8 needs to be repaired, the counterweight lifting mechanism 7 Each counterweight hook 23 is lifted from the counterweight 22 to which the counterweight hook 23 is fixed until the counterweight 22 at the top of the counterweight 6 abuts against the upper end of the counter case 20. Since the weight of the entire weight 6 is reduced, even if the counterweight 6 is heavy, the occupant can be rescued with a small force enough to raise several counterweights 22 or the control panel 8 can be rescued. Recovery work can be started.
[0025]
Further, in this embodiment, a pair of counterweight lifting hanging jigs 17, a pair of counterweight lifting pulleys 19, a pair of counterweight hooks 23, a pair of chain blocks 18, and a pair of Because the counterweight lifting mechanism 7 is configured by using a general device called the counterweight lifting rope 25, the car 2 is pushed up in the hoistway 5 and stopped for some reason. When a passenger is trapped in the car 2, the occupant can be rescued or the control panel 8 can be started to recover by using only general equipment.
[0026]
【The invention's effect】
As described above, according to the present invention, in the elevator system according to the first aspect, when the car is pushed up in the hoistway and stopped for some reason, and a passenger is trapped in the car, a counterweight is provided. Even if the vehicle is heavy, it is possible to rescue the occupant or start the recovery operation of the control panel in a short time.
[0027]
Further, in the elevator system according to claim 2, when the car is pushed up in the hoistway and stopped for some reason, and the passenger is trapped in the car, even if the counterweight is heavy, The occupants can be rescued and the control panel can be restored with just a small force to raise the counterweight.
[0028]
Further, in the elevator system according to claim 3, when the car is pushed up in the hoistway and stopped for some reason, and the passenger is trapped in the car, even if the counterweight is heavy, The occupants can be rescued and the control panel restoration work can be started with only a simple device.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of an elevator system according to the present invention.
FIG. 2 is a schematic view showing an operation example of a counterweight pulling mechanism constituting the elevator system shown in FIG.
FIG. 3 is a partially enlarged side view of a counterweight pulling mechanism constituting the elevator system shown in FIG. 1;
[Explanation of symbols]
1: elevator system 2: car 3: hall three-way frame 4: elevator mechanism 5: hoistway 6: counterweight 7: counterweight lifting mechanism 8: control panel 9: counterweight guide rail 10: rope hitch 11: rope Hitch 12: Car sheave 13: Counterweight sheave 14: Rope 15: Hoisting machine 16: Hoisting machine brake 17: Lifting jig 19 for raising the counterweight 19: Pulley 20 for raising the counterweight 20: Counter case 21: Clearance 22 ： Counter weight 23 ： Counter weight hook 24 ： Pull guide groove 25 ： Counter weight pull rope

Claims (3)

In an elevator system in which a car arranged so as to be able to move up and down in a hoistway, a rope connected to a counterweight having a weight corresponding to the weight of the car is run, and the car is lifted up and down in a slippery manner. ,
A counterweight lifting mechanism that lifts a part of the plurality of counterweights that constitute the counterweight and lowers the car,
An elevator system comprising: The elevator system according to claim 1,
The counterweight is a counter case that moves up and down along the hoistway,
A plurality of counterweights which are inserted into the countercase so as to be able to move up and down so as to form a gap on the upper side of the countercase;
An elevator system comprising: The elevator system according to any one of claims 1 and 2,
The counterweight pulling mechanism, a counterweight pulley attached to a predetermined portion of the hoistway,
A counterweight hook attached to the counterweight,
In the hoistway, a chain block fixed below the counterweight pulley,
Through the pulley for the counterweight, a rope for raising the counterweight that connects the chain block and the counterweight hook,
An elevator system comprising:

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