JP2013199348A - Emergency operation device for winding drum type elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a winding drum type elevator that can readily rescue a car passenger in an emergency even if a car is not traveled while releasing its brake.SOLUTION: A winding drum type elevator includes: a main motor 23 that drives a car 5 in energy supply; an auxiliary motor 29 that is connected to the main motor 23 and rotated by a storage battery 71; brakes 25, 27 that release and restrict the main motor 23 and the auxiliary motor 29; a winding machine 21 that winds a rope 7 around a winding drum 19 rotated by the rotation of the main motor 23 and the auxiliary motor 29; a normal-time control part 60 that drives and controls the main motor 23; an emergency push-button switch 91 that generates an emergency signal operated by a person and turns off the emergency signal without operation by the person; and a changeover switch 93 that disconnects a commercial motor 31, a motor drive part 63 an a normal-time control part 65, and feeds power from the storage battery 71 to the auxiliary motor 29 and the brakes 25, 27.

Description

  The present invention relates to an emergency operation device for a winding drum type elevator.

  As described in the following patent document, a conventional emergency operation device for a wind-cylinder elevator detects a speed detector that detects a speed during normal operation of the elevator, and detects that a car is in a door zone that can open a door. Door zone detector, inter-floor stop detector that detects that the car has stopped between floors, when the car stops between floors, the electromagnetic brake is released and the car travels to the door zone, and this electromagnetic brake is turned on and off by the door zone. Means for performing the detection according to the detection condition of the detector and the detection speed condition of the speed detector is provided.

  According to such an emergency operation device for a wind-cylinder type elevator, when the car is abnormally stopped outside the door zone, the electromagnetic brake is released and the car travels to the door zone. Since the electromagnetic brake is turned on and off by the door zone detection signal, the car can be stopped in the door zone while preventing the car speed from rising abnormally. Thereby, the passenger | crew in a cage | basket | car can be rescued.

Japanese Utility Model Publication No. 60-119073

The emergency operation device for a wind-cylinder type elevator is an invention that is established on the premise that when the electromagnetic brake is released, the car is driven and lowered by its own weight.
However, even in the case of a wind-cylinder type elevator, there are cases where the car does not descend even when the brake is released, depending on the driving efficiency of the hoisting machine having a deceleration function, particularly the reverse efficiency of rotating the car in the downward direction. In addition, if the car stops outside the door zone where the car door cannot be opened due to the failure of the speed detector that detects the motor speed used in normal times and the speed calculation circuit that calculates the speed from this speed, Not only is it impossible to rescue passengers, but even if the speed detector is normal, emergency power must be supplied to the speed calculation circuit, etc., and this emergency rescue circuit has the problem of becoming complicated. I found.

  The present invention has been made in order to solve the above-described problems. Even if the brake is not released and the car does not travel downward, the speed detection signal of the speed detector is not used. The purpose of this invention is to obtain an emergency operation device for a wound-cylinder elevator that can rescue passengers in the car.

The emergency operation device for a wound-cylinder elevator according to the first aspect of the invention raises and lowers a car based on power supply from a commercial power supply during normal times, and drives the car based on power supply from power storage means in an emergency. In the emergency operation device for a winding cylinder type elevator, the first motor that drives the car in the normal time, the second motor that is connected to the shaft of the first motor and is rotated by the power storage means, and the first motor Brake means for opening and restraining the first and second motors, a winding drum that rotates based on the rotation of the motor, a hoisting machine that winds a rope around the winding drum, and the first motor A normal control driving means for driving and controlling, a safety checking means for generating a safety signal when the second motor can be driven and checked for safety, and a human operation Emergency signal And the emergency operation means for extinguishing the emergency signal by non-operation, and the commercial power source and the normal time control drive means are disconnected based on the emergency signal, and the power storage means is connected to the second motor and the brake means. When the emergency signal and the safety signal are generated when the emergency signal and the safety signal are generated, the brake is energized and released, and after the second motor is energized in the downward direction of the car, the emergency signal disappears. And an emergency control drive means for cutting off the power supply to the brake and the second motor, and the second motor is constrained at a speed at which the second motor rotates when the emergency signal is generated. And a rotation speed suppressing means for suppressing the rotation speed.
According to such an emergency operation device for a wind-cylinder type elevator, when an emergency signal is generated by a person operating the emergency operation means in a state where the car is stopped between the floors due to a failure, a power failure or the like, the switching means is a commercial power source. In addition, the normal-time control drive means is disconnected, and the second motor and the brake means are switched to allow power supply from the power storage means.
The emergency control drive means energizes and releases the brake based on the emergency signal and the safety signal, and the car descends when the second motor is energized in the descending direction of the car. At this time, the rotation speed suppression means restrains the speed by restraining the second motor when the speed at which the second motor rotates (for example, exceeds a predetermined value), and the speed of the second motor decreases or When stopped, the car is lowered by repeatedly releasing the restraint of the second motor.
When the car is moved to the door zone and the person does not operate the emergency operation means, the emergency signal disappears, the power supply to the brake and the second motor is cut off, and the car is stopped. In this state, when the passenger in the car opens the car-side door by hand, the landing-side door is also interlocked and the passenger can move from the car to the landing.
In the above, for example, if the static friction torque in terms of the motor shaft in a wound-cylinder elevator is small, a small descending torque is given at the time of startup, and thereafter, the speed is increased while self-propelled by the car-side weight. It will be.

The rotational speed suppressing means in the emergency operation device for a wound-cylinder elevator according to the second invention is connected and fixed to the shaft of the second motor, and is based on the centrifugal force generated by the rotation of the second motor. This is a centrifugal brake that restrains the motor 2 from being opened.
Thereby, the emergency control drive means releases the brake based on the emergency signal and the safety signal and energizes the second motor in the downward direction of the car. As a result, the speed of the car increases, and when the centrifugal force of the first motor increases and reaches a predetermined speed, the centrifugal brake is braked, and when decelerated, the braking force decreases and the speed increases again. While the car continues to descend. Then, the passenger in the car can escape from the car as described above.
Since the rotation speed suppressing means only needs to be a mechanical centrifugal brake to restrain the first motor, no opening / closing means such as an electrical contactor is required. For this reason, since electrical control is unnecessary, it is simple.

According to a third aspect of the invention, the rotational speed suppressing means in the emergency operation device for a cylinder-type elevator repeats energization and shut-off of the brake at a constant cycle after energizing the second motor in the downward direction of the car. It is a thing.
Thus, the emergency control drive means releases the brake based on the emergency signal and the safety signal, and after energizing the second motor in the downward direction of the car, the rotation speed suppression means Since the brake is repeatedly energized and interrupted at a constant cycle, the car descends to the door zone while suppressing the descending speed of the car. Then, the passenger in the car can escape from the car as described above.
The rotation speed suppressing means only needs to control the opening and closing of the existing brake to restrain the first motor. Accordingly, it is easy to restrain the first motor because no other restraining means such as a centrifugal brake is required.
For example, in a wind tunnel type elevator, if the static friction torque in terms of the motor shaft is small, a small descending torque is given at the time of start-up, and thereafter it is used to increase the speed while self-propelled by the car-side weight. I can say.

The rotational speed suppression means in the emergency operation device for a wound-cylinder elevator according to the fourth invention repeatedly energizes and shuts off the second motor in the downward direction of the car, and the brake also energizes the second motor. Opening and restraining are repeated according to the shut-off.
As a result, the emergency control driving means releases the brake based on the emergency signal and the safety signal, and after energizing the second motor in the downward direction of the car, the rotation speed suppressing means causes the second motor to move to the car. The energization and interruption are repeated at regular intervals in the descending direction, and the brake is repeatedly released and restrained in accordance with the energization and interruption of the second motor, so that the car is moved to the door zone while suppressing the descent speed of the car. . Then, the passenger in the car can escape from the car as described above.
The rotational speed suppressing means only needs to control opening and closing of the existing brake and the second motor in order to restrain the second motor. Therefore, it is easy to restrain the second motor because no other restraining means such as a centrifugal brake is required.

According to a fifth aspect of the present invention, the emergency operation device for a wind-cylinder type elevator is configured to connect and fix the second motor to and from the first motor based on electromagnetic force, and to perform the electromagnetic operation based on a clutch control signal. The electromagnetic clutch means for controlling the force is provided.
Thus, the second motor is connected and fixed to the first motor by operating the electromagnetic clutch means based on the clutch control signal. Therefore, if the generation of the clutch control signal is appropriately controlled as necessary, the total time during which the second motor rotates can be shortened compared to that of the first motor used in normal operation. This extends the mechanical life such as the bearing life of the second motor. For this reason, a general-purpose motor having a slightly short mechanical life can be used as the second motor.
Further, it is preferable that the emergency signal is used as a clutch control signal, and the second motor is connected and fixed to the first motor by electromagnetic clutch means based on the occurrence of the emergency signal.
Thus, the electromagnetic clutch means is operated based on the emergency signal to connect and fix the second motor to the first motor, thereby enabling the second motor. Therefore, during the normal operation when the first motor is rotating, the second motor is disconnected from the first motor and thus does not rotate. Since the second motor is connected and fixed to the first motor during an emergency operation, the second motor rotates only in an emergency, and the number of rotations is extremely small compared to the first motor. For this reason, the mechanical life such as the bearing life of the second motor is further extended.
The clutch control signal may be a car running signal at normal times. In this case, normally, when the car is running, the second motor and the first motor are separated by the electromagnetic clutch means, and the car running signal disappears (the car stop signal). The second motor and the first motor may be connected and fixed by electromagnetic clutch means.

According to a sixth aspect of the present invention, there is provided an emergency operation device for a wound-cylinder type elevator, wherein the second motor is connected to the first motor and fixed and separated based on the centrifugal force of the first motor. It is provided.
Thereby, when the rotation speed of the first motor is lowered, the first motor and the second motor are connected and fixed based on the centrifugal force of the first motor, and when the rotation speed of the first motor is increased, The first motor and the second motor are separated based on the centrifugal force of the first motor. Therefore, the electrical control of the clutch means is unnecessary, and this is simple.

The emergency operation device for a wound-cylinder elevator according to a seventh aspect of the present invention is based on detection by a door openable section detecting means for detecting a section in which a car door can be opened, and detection by the door openable section detecting means. And an emergency power shut-off means for restraining the brake means.
As a result, even in the event of an emergency signal from a person, when the car descends and reaches the door zone where the car door can be opened, the door openable section detection means detects this and the emergency signal Even if this occurs, the emergency power cutoff means shuts off the second motor and restrains the brake means. Therefore, since the car can be stopped in the door zone simply and reliably, the operation becomes easy.

The emergency operation means in the emergency operation device for a wound-cylinder elevator according to the eighth invention is provided in the car.
Thus, in an emergency, the operation of the emergency operation means of only the passenger in the car can cause the car to descend and stop in the door zone, and the door can be opened to rescue. Here, as the emergency operation means, a push button type switch can be exemplified.

The safety check means in the emergency operation device for a wound-cylinder elevator according to the ninth aspect of the invention includes a landing and a car door shut-down defined in the Building Standards Act, an emergency stop of the car, and a first of the car More than the overshoot, the first overshoot, and the second overshoot for detecting overshoot, and the cutting and loosening of the main rope of the winding drum are detected.
Here, as a safety check of the winding drum type elevator stipulated in the Building Standard Law, at the time of this application, the car side door closing detection means for detecting the door side door closing, the landing side detecting the door side door closing Door closing detection means, first overshoot detection means for detecting a first overshoot at the terminal floor of the car, and second overshoot detection means for detecting an overshoot of the car further than the first overshoot at the terminal floor. Examples thereof include a looseness detecting means for detecting cutting and loosening of the main rope wound around the winding drum of the hoisting machine, and an emergency stop operation detecting means for detecting the operation of the emergency stop.
Moreover, since the building standard law is revised with the passage of time, the illustrations of the respective means can be changed.
As a result, the car can be traveled while confirming only indispensable safety in the event of an emergency, and there is a high possibility that the passenger in the car can be rescued while ensuring safety.

  According to the present invention, even if the car is stopped between floors and the brake is released and the car does not travel downward, the second motor can be operated in an emergency without using the speed detection signal of the speed detector. It is possible to obtain an emergency operation device for a wound-cylinder elevator that can be used to easily travel down a car and rescue an occupant in the car.

Embodiment 1 FIG.
An embodiment of the present invention will be described with reference to FIGS. 1 is an overall configuration diagram of a winding drum type elevator according to an embodiment of the present invention, FIG. 2 is a front view of a drive-related portion of the winding drum type elevator shown in FIG. 1, and FIG. 3 is a winding drum type elevator shown in FIG. FIG. 4 is a detailed connection diagram of the safety check of the winding drum type elevator shown in FIG.
In FIG. 1, a roll-type elevator 1 as a home elevator installed in a private house has a car 5 in a hoistway 3, and has a rope 7 as a main rope for suspending the car 5. doing. At the bottom of the hoistway 3, a shock absorber 9 is provided for mitigating the impact when the car 5 collides in the event of an abnormality, and a guide rail 11 that guides the raising and lowering of the car 5 is erected. A sheave 17 is installed on the hoistway 3 and on which a rope 7 is hung.

  At the bottom of the car 5 is provided an emergency stop 13 that operates when the rope 7 is cut or loosened, and at the lower part of the hoistway 3 is provided a winding drum 19 for winding and unwinding the rope 7. A driving unit 20 having a function of driving and stopping the winding drum 19 is provided, and a control device 50 for controlling the driving unit 20 is provided. The car 5 has a car-side door 6, and each landing has a landing-side door 21.

In the car 5, an emergency push button switch 91 is provided as an emergency operation means having an emergency normally open contact 91a which is closed from being opened when pushed by the passenger. That is, when the occupant operates the emergency push button switch 91, the emergency normally open contact 91a is closed (turned on) from an open state to generate an emergency signal, and when released, the emergency normally open contact 91a is closed. It is formed so that the emergency signal disappears when it is opened (turned off).
The emergency push button switch 91 may be provided at each landing as shown by a dotted line without being provided within the car 5, but is preferably provided within the car 5. This is because the occupant of the car 5 can rescue out of the car 5 by himself.

On the side opposite to the landing of the car 5, there is a door zone detection contact 101 b as an emergency power shut-off means comprising a normally closed contact that detects a section where the door can be opened and opens from the closed state, and a door zone detection having a rotating part. A switch 101 is provided, and a door zone plate 101p corresponding to the door zone detection switch 101 is connected and fixed to the hoistway 3 corresponding to the door zone of each landing. That is, as the car 5 moves up and down, the rotating portion of the door zone detection switch 101 rides on the door zone plate 101p, so that the door zone detection switch 101 operates and the door zone detection contact 101b is opened from the closed position to detect a door openable section. It is formed to do.
Here, the door openable section detecting means corresponds to the door zone detection switch 101 and the door zone plate 101p.

  The safety device prescribed | regulated to the building standard law of the winding drum type elevator 1 is demonstrated below. First, the car 5 is provided with a car-side door opening switch 122 for detecting the opening and closing of the car-side door 6, and the car-side door opening detecting contact 122b comprising a normally-closed contact for detecting the opening of the door and opening it from the closed position is provided. Have. Each landing is provided with a landing-side door opening switch 124 that detects opening / closing of the landing-side door 21 and has a landing-side door opening detection contact 124b that is a normally closed contact that detects the opening of the door and opens the door from the closing state. ing.

Further, on the inner surface of the hoistway 3 opposite to the landing, at the end of the hoistway 3, a first overshoot detection contact 128b comprising a normally closed contact that detects the first overshoot of the car 5 and opens from the closed state. And a first row detection switch 128 having a first rotating part, and a second row comprising a normally closed contact for detecting the overshoot of the car 5 and opening from the closed state more than the first overshoot. In addition to having the excess detection contact 130b, the second rotation unit has the second excess detection switch 130. The door zone detection switch 101, the first overshoot detection switch 128, and the second overtravel detection switch 130 are arranged at the same height. This is to avoid mutual interference.
In the hoistway 3, the lowermost end side and the uppermost end side are provided with a first lower overpass plate 128 d corresponding to the first rotation part of the first overshoot detection switch 128, and a first The upper overshoot plate 128u is provided, and the second lower overpass plate 130d and the second upper overpass plate 130u are provided corresponding to the second rotating portion.

  Further, the car 5 detects that an emergency stop (not shown) has been operated, and detects the emergency stop operation detection contact 126b of a normally closed contact that opens from the closed state, and detects the cutting or loosening of the rope 7 to release the closed state from the closed state. A looseness detection switch 132 having a rope looseness detection contact 132b composed of a normally closed contact. Further, the overspeed of the car 5 is electrically detected, the speed of the car 5 is obtained from the detection signal of the encoder 24 as a speed detector for detecting the rotation speed of the main motor 23, and the car 5 becomes overspeed. , An overspeed detection contact 156b comprising a normally closed contact that detects an abnormality and opens from the closed state is provided. The rope 7 is connected and fixed to the looseness detection switch 132 (not shown).

In FIG. 2, a base 18 is provided, and a hoisting machine 21 that drives the winding drum 19 and decelerates the input rotation is fixed to the base 18 in the drive unit 20. The drive unit 20 has a main motor 23 as a first motor that rotates on the basis of power supply from a commercial power source and drives the winding drum 19 at normal times, and is connected to the shaft of the main motor 23. In addition, an auxiliary motor 29 is provided as a rotating second motor. Further, the drive unit 20 has first and second brakes 25 and 27 as brake means for releasing and restraining the main motor 23 and the auxiliary motor 29, and the auxiliary motor 29 is connected to the main motor 23 and separated from the main motor 23. Is provided based on a clutch control signal.
The drive unit 20 is also provided with an encoder 24 for detecting the rotational speed of the main motor 23 at the end of the first brake 25.

  Here, instead of the electromagnetic clutch 28, a centrifugal clutch that connects and fixes the auxiliary motor 29 to the main motor 23 based on the centrifugal force of the main motor 23 may be used. When the rotational speed of the main motor 23 decreases, the centrifugal force of the main motor 23 decreases and the main motor 23 and the auxiliary motor 29 are connected and fixed. When the rotational speed of the main motor 23 increases, the centrifugal force of the main motor 23 increases. Increases to separate the main motor 23 and the auxiliary motor 29 from each other. Therefore, unlike the electromagnetic clutch 28, the connection by the centrifugal clutch is simple because no electrical control is required.

  In FIG. 3, the control device 50 includes a changeover switch as a switching means that can disconnect the commercial power supply 31 and the normal control device 60 based on the emergency signal and can supply power to the auxiliary motor 29 and the first and second brakes 25 and 27. 93. The changeover switch 93 opens and closes the normal power supply contact 93b, which is a normally closed contact that opens and closes the commercial power supply 31 and the normal control device 60, and the storage battery 71 and the emergency control device 70 as power storage means. It has an emergency power supply contact 93c consisting of a normally open contact.

  The control device 50 includes a safety check unit 100 as a safety check means that disables traveling or stops traveling if the safety of the car 5 that can be raised and lowered is not confirmed. A normal controller device 60 for opening and restraining the main motor 23 and the first and second brakes 25 and 27 by the commercial power source 31 at the normal time, and the auxiliary motor 29 and the first and second brakes 25 by the storage battery 71 at the emergency time. , 27 is provided with an emergency controller device 70 for opening and restraining. And the control apparatus 50 has the safety check part 100 which checks safety | security at both the normal time and an emergency.

  The safety check unit 100 includes a first safety check unit 120 that checks safety requirements defined in the Building Standards Act (Building Standards Law Enforcement Ordinance) as a minimum necessary for traveling the car 5. In addition to the first safety check unit 120, a second safety check unit 150 that is not stipulated by the Building Standards Law but checks to further improve safety is provided. The first safety check unit 120 includes a car side door open detection contact 122b, a landing side door open detection contact 124b, an emergency stop operation detection contact 126b, a first overshoot detection contact 128b, and a second overshoot detection contact 130b. The rope looseness detection contact 132b is connected in series. As a result, when all the detection contacts 122b to 132b are closed (ON), a safety signal is generated, and any one of the detection contacts 122b to 132b is released from being closed (OFF). Is formed to disappear.

  The second safety check unit 150 includes a temperature detection contact 152b composed of a normally closed contact that opens from the closed state due to a temperature abnormality of the main motor 23, and a normally closed contact that opens from the closed state due to an abnormality of the normal-time control unit 65. A control abnormality detection contact 154b, an overspeed detection contact 156b, and an overload detection contact 158b composed of a normally closed contact that opens when the load in the car 5 exceeds a predetermined value are connected in series. Yes.

The normal control device 60 includes a motor drive unit 63 having a converter that converts the AC power of the commercial power source 31 into DC and an inverter that converts the DC into AC of variable voltage and variable frequency. A control power source 61 that converts the power source into a DC low voltage, a speed processing circuit (not shown) that obtains the rotational speed signal of the encoder 24 and obtains the speed of the main motor 23, and controls the motor drive unit 63 An hour control unit 65 is provided. Further, the normal control device 60 has a brake drive unit 67 that restrains and releases the first and second brakes 25 and 27 by driving the electromagnetic coils of the first and second brakes 25 and 27 on and off. doing. Here, the normal control unit 65 and the like are mounted on a printed circuit board on which electronic components are mounted.
The normal-time control drive means corresponds to the motor drive unit 63 and the normal-time control unit 65.

The emergency control device 70 controls the rotational speed to drive and control the auxiliary motor 29 and the first and second brakes 25 and 27 in an emergency through the emergency normally open contact 91a and the door zone detection contact 101b of the emergency push button switch 91. A rotation speed suppression unit 72 is provided as means. When the emergency push button switch 91 is pressed while the car 5 is stopped outside the door zone, the rotation speed suppression unit 72 closes the emergency normally open contact 91a from the open state, as shown in FIG. During a certain time Ta, the first and second brakes 25, 27 and the auxiliary motor 29 are energized to generate an on command signal for rotating the auxiliary motor 29 in the downward direction, and then the second certain time Tb. During this period, an off command signal for shutting off the first and second brakes 25 and 27 and the auxiliary motor 29 is generated, so that one cycle is formed by the first constant time Ta and the second constant time Tb. ing.
When the emergency push button switch 91 is released, the emergency normally open contact 91a is released from the closed state and generates a cutoff command signal (off signal) that shuts off the first and second brakes 25, 27 and the auxiliary motor 29. It is formed to do. Since such a rotation speed suppression unit 72 can be formed by an intermittent timer and a relay, it is not necessary to perform complicated control like a microcomputer. Thereby, in an emergency, the passenger | crew in the cage | basket | car 5 can be rescued by the rotational speed suppression part 72 with a simple structure.
The emergency control drive means corresponds to a series circuit of the emergency normally open contact 91a of the emergency push button switch 91, the safety check unit 100, and the door zone detection contact 101b.

The operation of the winding drum type elevator configured as described above will be described with reference to FIGS. FIG. 5 is a time chart showing the emergency operation of each part of the winding drum type elevator shown in FIG. 1, and FIG. 6 is a flowchart showing the emergency operation of the winding drum type elevator shown in FIG.
If the car 5 stops between floors for some reason (step S101), the door zone detection contact 101b is closed, and the passenger of the car 5 pushes the emergency push button switch 91 to open the emergency normally open contact 91a. When the emergency signal is generated (step S103), the normal power supply contact 93b of the changeover switch 93 is released from the closed state due to the generation of the emergency signal, and the normal controller device 60 is disconnected from the commercial power supply 31. Then, the emergency power supply contact 93c is closed to supply power from the storage battery 71 to the emergency controller device 70 (step S105).

  When the safety signal is generated by the safety check of the first safety check unit 120 (step S107), the emergency controller device 70, at time t0, the rotation speed suppression unit 72 performs the first and second operations for the first predetermined time Ta. The brakes 25 and 27 are released, and the auxiliary motor 29 is driven to drive the car 5 and descend at a low speed. At time t1, the rotation speed suppression unit 72 generates an off signal to restrain the first and second brakes 25 and 27 by the second constant time Tb and turn off the auxiliary motor 29 to turn off the car 5. Decelerate and stop. When the auxiliary motor 29 is driven / cut off by repeating the operation of the cycle T composed of the first and second fixed times Ta, Tb, or the first and second brakes 25, 27 are released / restrained, it is as if The cage 5 is lowered at a low speed like a scale insect (step S109).

  When the car 5 reaches the door zone (step S111), the door zone detection contact 101b is opened to restrain the first and second brakes 25 and 27, and the energization of the auxiliary motor 29 is cut off (step S113). Stop the car 5 in the door zone. When the occupant opens the car door 6 by hand, the landing side door 21 is also opened in conjunction with the occupant, and the occupant can rescue from the car 5 by himself.

  In step S111, the door zone is detected by the door zone detection contact 101b. However, by detecting that the occupant has reached the door zone and releasing the emergency push button switch 91 without using the door zone detection switch 101, The first and second brakes 25 and 27 may be constrained, and the auxiliary motor 29 may be de-energized.

In the above-described embodiment, when the emergency push button switch 91 is pressed when the car 5 is stopped outside the door zone, the rotation speed suppression unit 72, during the first predetermined time Ta as shown in FIG. After energizing the first and second brakes 25 and 27 and the auxiliary motor 29 to generate an on command signal for rotating the auxiliary motor 29 in the downward direction, the first and first brakes 25 and 27 and the auxiliary motor 29 The rotation speed of the auxiliary motor 29 is suppressed by generating an off command signal that shuts off the second brakes 25 and 27 and the auxiliary motor 29.
On the other hand, if the emergency push button switch 91 continues to be pressed, the first motor 1 continues when the auxiliary motor 29 continues to be energized, or when the car 5 descends even if the energization is interrupted. After the second brakes 25 and 27 are released for a third fixed time, the first and second brakes 25 and 27 are held off for a fourth fixed time. You may repeat this period by making this 3rd fixed time and 4th fixed time into 1 period.

  The winding-cylinder type elevator 1 according to the above-described embodiment normally moves up and down the car 5 based on the power supply from the commercial power supply 31 and drives the car 5 based on the power supply from the storage battery 71 in an emergency. In the emergency operation device 1, the main motor 23 that drives the car 5 in the normal state, the auxiliary motor 29 that is connected to the shaft of the main motor 23 and rotates by the storage location 71, and the main motor and the auxiliary motors 23 and 29 are opened. The first and second brakes 25 and 27 to be constrained and the winding drum 19 that rotates based on the rotation of the main motor and the auxiliary motors 23 and 29, and the rope 7 is wound around the winding drum 19 The first safety that generates a safety signal when the machine 21 and the main motor 23 are driven, and the normal-time control drive unit 60 that controls the machine 21 and the auxiliary motor 29 are checked for safety. In the event of an emergency, the emergency push button switch 91 that generates an emergency signal when operated by a person and extinguishes the emergency signal when not operated, and the commercial power supply 31 and the motor drive unit 63, The normal time control unit 65 is disconnected, the changeover switch 93 that supplies power to the auxiliary motor 29 and the first and second brakes 25, 27 from the storage location 71, and the first and second brakes when an emergency signal and a safety signal are generated. 25 and 27 are energized and opened, and the auxiliary motor 29 is energized for a certain period of time in the downward direction of the car 5, and the auxiliary motor 29 and the first and second brakes 25 and 27 are energized based on the disappearance of the emergency signal. And a rotation speed suppression unit 72 that repeats blocking and blocking.

According to the emergency operation device for such a wind-cylinder type elevator, when an emergency signal is generated by a person pressing the emergency push button switch 91 in a state where the car is stopped between the floors due to a failure, a power failure or the like, the changeover switch 93 is The commercial power supply 31, the motor drive unit 63, and the normal-time control unit 65 are disconnected, and the auxiliary motor 29 and the first and second brakes 25 and 27 are switched to be able to supply power from the storage battery 71. The rotation speed suppression unit 72 lowers the car 5 by releasing the first and second brakes 25 and 27 and repeatedly energizing and interrupting the auxiliary motor 29 in the descending direction of the car 5 for a certain period of time.
As a result, when the car 5 moves to the door zone and the passenger releases the emergency push button switch 91, the emergency signal disappears and power supply to the auxiliary motor 29 and the first and second brakes 25 and 27 is cut off. Then, the car 5 is stopped. In this state, when the passenger in the car 5 opens the car-side door 6 by hand, the landing-side door 21 is also interlocked and the passenger can move from the car 5 to the landing.
In addition, the emergency controller device 70 can lower the car 5 in an emergency without using a control board that forms the normal-time control unit 65 of the normal controller device 60. Therefore, even if the control board breaks down, it is not affected by the rescue of the occupant in the car 5, so the rescueable range is expanded.

Embodiment 2. FIG.
Another embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a front view of a drive-related portion of a winding drum type elevator according to another embodiment of the present invention, and FIG. 8 is an overall connection diagram of the winding drum type elevator according to another embodiment of the present invention.
7 and FIG. 8, the same reference numerals as those in FIG. 2 and FIG. In FIG. 7, the control device 250 has a drive unit 220.
When the centrifugal force exceeds a predetermined value as the rotational speed of the auxiliary motor 29 increases between the electromagnetic clutch 28 and the auxiliary motor 29, the driving unit 220 serves as a rotational speed suppressing unit that restrains the rotation of the auxiliary motor 29. The centrifugal brake 222 is provided. Here, the centrifugal brake 222 is fixed to the base 18 (not shown).

  In FIG. 8, the emergency controller device 170 includes the first and second brakes 25, 27 from the storage battery 71 via the emergency power supply contact 93c, the emergency push button switch 91, the safety check unit 100, and the door zone detection contact 101b. The auxiliary motor 29 is connected.

The operation of the winding drum type elevator constructed as described above will be described mainly with reference to FIGS. FIG. 9 is a time chart showing an emergency operation of each part of the winding drum type elevator according to another embodiment, and FIG. 10 is a flowchart showing an emergency operation of the winding drum type elevator according to another embodiment.
Now, when the car 5 stops between floors for some reason at time t0 (step S101), when the emergency push button switch 91 is pressed in step S103 as in the first embodiment, S105 and S107 are executed. Then, the first and second brakes 25 and 27 are released, and the auxiliary motor 29 is energized to move the car 5 in the downward direction (step S201). At time t11, the rotational speed of the auxiliary motor 29 increases and the centrifugal force increases (step S203), whereby the centrifugal force brake 222 operates to brake the auxiliary motor 29 (step S205).

  In step S205, when the centrifugal brake 222 restrains the auxiliary motor 29, the rotational speed of the auxiliary motor 29 decreases and the centrifugal force decreases, so that the centrifugal brake 222 opens the auxiliary motor 29 at time t12 ( Step S207). Therefore, the rotation speed of the auxiliary motor 29 is increased again, and the centrifugal force is increased. For this reason, the car 5 descends at a substantially constant speed while repeating the steps S203, S205, and S207 until the car 5 reaches the door zone.

  When the car 5 reaches the door zone at time tx (step S111), the door zone detection contact 101b is released from the closed state to restrain the first and second brakes 25 and 27, and the auxiliary motor 29 is de-energized. Then, the car 5 stops in the door zone (step S113). When the occupant opens the car-side door 6 by hand, the landing-side door 21 is also opened in conjunction with the occupant, and the occupant can rescue from the car 5 by himself.

  The winding-cylinder type elevator 1 according to the above-described embodiment normally moves up and down the car 5 based on the power supply from the commercial power supply 31 and drives the car 5 based on the power supply from the storage battery 71 in an emergency. 1, the main motor 23 that drives the car 5 at normal time, the auxiliary motor 29 that is connected to the shaft of the main motor 23 and is rotated by the storage location 71, the main motor 23, and the auxiliary motor 29 are opened. A hoisting machine having a first and second brakes 25 and 27 to be constrained, a winding drum 19 that rotates based on the rotation of the main motor and auxiliary motors 23 and 29, and winding the rope 7 around the winding drum 19 21 and a normal control unit 60 that drives and controls the main motor 23, and a first safety check that generates a safety signal when the auxiliary motor 29 is checked for safety and can be driven. Unit 120, an emergency push button switch 91 that generates an emergency signal when operated by a person and extinguishes the emergency signal when not operated, and a commercial power source 31 and a motor drive unit 63 based on the emergency signal. The time control unit 65 is disconnected, and the auxiliary motor 29 and the first and second brakes 25 and 27 are connected and fixed to the shaft of the auxiliary motor 29 and the changeover switch 93 that supplies power from the power storage location 71, and the auxiliary motor 29 rotates. The auxiliary motor 29 is braked when the rotational speed exceeds a predetermined value based on the centrifugal force generated by the above, and when the rotational speed is less than the predetermined value, the braking is released and the centrifugal force brake 222 that maintains a substantially constant speed near the predetermined value is provided. When an emergency signal and a safety signal are generated, the first and second brakes 25 and 27 are energized and released, and the auxiliary motor 29 is moved in the downward direction of the car 5. After electrodeposition, it is to cut off the power supply to the first and second brake 25, 27 and auxiliary motor 29 based on the disappearance of the emergency signal.

  According to such an emergency operation device for a wind-cylinder type elevator, an emergency signal is generated when a person pushes the emergency push button switch 91 in a state where the car 5 is stopped between the floors due to a failure, a power failure or the like and a safety signal is generated. Is generated, the change-over switch 73 disconnects the commercial power supply 31, the motor drive unit 63, and the normal-time control unit 65, and switches to the auxiliary motor 29 and the first and second brakes 25 and 27 so that power can be supplied from the storage battery 71. When the first and second brakes 25 and 27 are released and the auxiliary motor 29 is energized in the descending direction of the car 5 to smoothly descend the car 5 and the speed of the car 5 reaches a predetermined value, the auxiliary motor 29 As the centrifugal force increases, the centrifugal brake 222 operates to restrain the auxiliary motor 29, whereby the car 5 decelerates. When the car 5 decelerates, the centrifugal brake 222 is deactivated, the auxiliary motor 29 is opened, and the car 5 is accelerated again. The car 5 descends at a substantially constant low speed while moving up and down repeatedly and moves to the door zone. As a result, when the car 5 moves to the door zone and the passenger releases the emergency push button switch 91, the emergency signal disappears and power supply to the auxiliary motor 29 and the first and second brakes 25 and 27 is cut off. Then, the car 5 is stopped. In this state, when the passenger in the car 5 opens the car-side door 6 by hand, the landing-side door 21 is also interlocked and the passenger can move from the car 5 to the landing.

  The present invention is not limited to the description of the embodiment of the invention. Various modifications are also included in the present invention as long as those skilled in the art can easily conceive without departing from the scope of the claims.

  The present invention can be applied to a winding drum type elevator.

1 is an overall configuration diagram of a winding drum type elevator according to an embodiment of the present invention. It is a front view of the drive related part of the winding drum type elevator shown in FIG. FIG. 2 is an overall connection diagram of the control relationship of the winding drum type elevator shown in FIG. 1. It is a detailed connection diagram of the safety check of the winding drum type elevator shown in FIG. It is a time chart which shows the emergency operation | movement of each part of the winding drum type elevator shown in FIG. It is a flowchart which shows the emergency operation | movement of the winding drum type elevator shown in FIG. It is a front view of the drive related part of the winding drum type elevator by other embodiments of the present invention. It is a whole connection diagram of the control relation of the winding drum type elevator by other embodiments of the present invention. It is a flowchart which shows the emergency operation | movement of the winding cylinder type elevator by other embodiment of this invention. It is a flowchart which shows the emergency operation | movement of the winding cylinder type elevator by other embodiment of this invention.

3 Hoistway 5 Car 7 Main rope (rope)
19 Winding cylinder 21 Hoisting machine 23 Main motor 25 First brake 27 Second brake 28 Electromagnetic clutch 29 Auxiliary motor 31 Commercial power supply 71 Storage battery 72 First emergency control drive unit 91 Emergency push button switch 93 Changeover switch 120 First 1 safety check unit 150 second safety check unit 172 second emergency control drive unit

Claims (9)

In an emergency operation device for a wound-cylinder elevator that normally raises and lowers a car based on power supply from a commercial power source and drives the car based on power supply from power storage means in an emergency,
A first motor for driving the car at the normal time;
A second motor connected to the shaft of the first motor and rotated by the power storage means;
Brake means for opening and restraining the first and second motors;
A hoisting machine having a winding drum that rotates based on rotation of the motor, and winding a main rope around the winding drum;
A normal-time control drive means for driving and controlling the first motor;
Safety check means for checking for safety whether the second motor is drivable and generating a safety signal when drivable;
Emergency operation means for generating an emergency signal by manipulating and extinguishing the emergency signal by non-operation;
When the emergency signal is generated, the commercial power supply and the normal time control drive means are disconnected, and switching means for supplying power from the power storage means to the second motor and the brake means,
When the emergency signal and the safety signal are generated, the brake is energized and released, and after the second motor is energized in the downward direction of the car, the brake and the second signal are generated based on the extinction of the emergency signal. Emergency control drive means for cutting off the power to the motor,
Rotation speed suppression means that restrains the second motor by restraining the rotation speed of the second motor based on the occurrence of the emergency signal and the safety signal;
An emergency operation device for a winding drum type elevator. The rotational speed suppressing means is a centrifugal brake that is coupled and fixed to the shaft of the first motor and that restrains the second motor from being opened based on a centrifugal force generated by the rotation of the first motor. ,
The emergency operation device for a winding drum type elevator according to claim 1. The rotational speed suppressing means repeats feeding and shutting off the brake at a constant cycle after the second motor is energized in the downward direction of the car.
The emergency operation device for a winding drum type elevator according to claim 1. The rotational speed suppressing means repeats energization and interruption at a constant cycle after energizing the second motor in the downward direction of the car, and also releases the brake in accordance with energization and interruption of the second motor. Repeat and restraint,
The emergency operation device for a winding drum type elevator according to claim 1. Electromagnetic clutch means for connecting and fixing the second motor to and from the first motor based on electromagnetic force, and for controlling the electromagnetic force based on a clutch control signal;
The emergency operation device for a wound-cylinder elevator according to any one of claims 1 to 4, further comprising: A centrifugal clutch that is coupled and fixed to the shaft of the second motor and that couples and fixes the second motor to and from the first motor based on the centrifugal force generated by the rotation of the first motor. Means
The emergency operation device for a wound-cylinder elevator according to any one of claims 1 to 4, further comprising: A door openable section detecting means for detecting an openable section of the car door;
Based on the detection of the door openable section detecting means, the second motor is shut off, and the emergency power shut-off means for restraining the brake means,
The emergency operation device for a wound-cylinder elevator according to any one of claims 1 to 6, wherein the emergency operation device is provided. The emergency operation means is provided in the car.
The emergency operation device for a wound-cylinder elevator according to any one of claims 1 to 7.   The safety check means detects the overshoot further than the door and car door closing, emergency stop operation, the first overshoot of the car, and the first overshoot defined in the Building Standard Law. The emergency operation device for a wind-cylinder type elevator according to any one of claims 1 to 8, wherein an overshoot of the wind-cylinder and cutting and loosening of the main rope of the winding drum are detected.

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