JP2016155625A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device capable of suppressing braking force, requested for a rope brake, to a rope small.SOLUTION: An elevator device according to the present invention comprises: a movement detection part 20 which detects moving of a rope 3 connecting a car 1 and a balance weight 2 and then outputs a detection signal; and a processing part which performs processing to grip and stop the rope 3 from moving according to the detection signal output from the movement detector 20. The processing part includes: a controller 11 which inputs the detection signal; and a rope brake control part 13 which performs control to allow the rope brake 12 to operate according to a command signal output from the controller 11. The movement detection part 20 includes an encoder 24 with a roller which comprises the roller capable of contacting and leaving a part of the rope 3 close to a main sheave 6 of a winding machine 7.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an elevator apparatus including a brake device that brakes a motor that rotationally drives a hoisting machine, and a rope brake that operates to grip a rope and prevent movement of the rope.

  This type of prior art is disclosed in Patent Document 1. The conventional elevator apparatus disclosed in Patent Document 1 includes a car and a counterweight, a rope that connects the car and the counterweight, and a hoisting machine having a main sheave that moves the rope. Yes.

  Although not disclosed in Patent Document 1, in general, in an elevator apparatus, a motor that rotationally drives a hoisting machine and a brake device that brakes the motor when a car is landed on a predetermined floor And a control device for controlling the drive of the motor and the drive of the brake device.

  Further, the prior art disclosed in Patent Document 1 responds to the control of the control device when the brake device is actuated to brake the motor and the car moves, that is, travels with the car door open. A rope brake is provided that grips the rope and prevents the movement of the rope, that is, the movement of the car.

JP 2007-204238 A

  The prior art disclosed in Patent Document 1 described above includes a rope brake in addition to a brake device that brakes a motor that drives the hoisting machine when the car reaches the predetermined floor. This is effective for preventing the car from moving open when the car is open.

  By the way, although it is not indicated by patent documents 1, generally in this kind of elevator apparatus, stop of a car containing a shielding board provided in the hoistway side, and a photoelectric device provided in the car side Position detecting means is provided. When the car approaches a predetermined floor and enters an area where stopping is permitted, the light emitted from the photoelectric device is shielded by the shielding plate, and the control device drives the motor by the detection signal that detects this. Stop. Along with this, the rotation of the hoisting machine stops, and the movement of the rope connected to the car stops. At this time, according to the control of the control device, the brake device is operated to brake the motor. Subsequently, the car door and the landing door are opened, and a door open detection signal is output to the control device.

  When the car is stopped and the car door is opened in this way, and the car moves or runs for some reason, conventionally, the light emitted from the photoelectric device by the shielding plate When the shielding is released, a detection signal for detecting the movement of the car is output to the control device, and in response thereto, the control device activates the rope brake. As a result, the rope brake prevents the rope from moving and the car stops.

  In other words, in the prior art, the detection of door-open travel in which the car moves while the door of the car is opened is a detection signal for detecting that the light shielding of the photoelectric device by the shielding plate has been released. Is input to the control device. During this time, the car is already running and acceleration is started. Therefore, the rope brake is required to have a large braking force in order to brake the rope connected to the car in which acceleration has started. As a result, the conventional rope brake tends to be large. In connection with this, the installation cost of the said elevator apparatus tends to become high.

  The present invention has been made based on the above-described situation in the prior art, and an object of the present invention is to provide an elevator apparatus that can suppress a braking force to a rope required for a rope brake.

  In order to achieve the above object, an elevator apparatus according to the present invention includes a car and a counterweight, a rope that connects the car and the counterweight, a hoisting machine that moves the rope, and the hoisting machine. A motor that rotates the vehicle, a brake device that brakes the motor when the car reaches the predetermined floor, a control device that controls the drive of the motor and the drive of the brake device, and the brake device operates The motor is braked, and when the car moves while the car door is open, the rope is gripped and prevented from moving according to the control of the control device. In an elevator apparatus provided with a rope brake that operates on a movement detection unit that detects movement of the rope and outputs a detection signal, and a detection signal output from the movement detection unit Flip and is characterized by comprising a processing unit that performs processing for operating the rope brake.

  The rope moves when the door-opening movement in which the car is about to move with the car door opened is opened. According to the elevator apparatus of the present invention, the movement of the rope at this time is immediately detected. The rope brake is actuated by the processing of the processing section, and the rope can be prevented from moving to stop the car. That is, according to the present invention, the time from when the door-opening travel is started until the car stops can be made shorter than before. Therefore, the car can be stopped before the car accelerates, and the braking force for the rope required for the rope brake can be suppressed to be smaller than in the prior art. As a result, according to the present invention, the work of installing the rope brake in the hoistway becomes easier than before, and the equipment cost of the elevator apparatus can be reduced more than before.

1 is a side view showing a schematic configuration of a first embodiment of an elevator apparatus according to the present invention. It is an enlarged side view which shows the principal part structure of 1st Embodiment. It is a flowchart which shows the processing operation in 1st Embodiment. It is an enlarged side view which shows the principal part structure of 2nd Embodiment of this invention. It is an enlarged side view which shows the principal part structure of 3rd Embodiment of this invention. It is an enlarged side view which shows the principal part structure of 4th Embodiment of this invention. It is an enlarged side view which shows the principal part structure of 5th Embodiment of this invention.

  Embodiments of an elevator apparatus according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a side view showing a schematic configuration of a first embodiment of an elevator apparatus according to the present invention, and FIG. 2 is an enlarged side view showing a main configuration of the first embodiment.

  As shown in FIGS. 1 and 2, the elevator apparatus according to the first embodiment of the present invention includes a car 1 and a counterweight 2, a rope 3 that connects the car 1 and the counterweight 2, and, for example, A hoisting machine 7 having a main sheave 6 attached to a machine base 5 installed in the machine room 4 and moving the rope 3, a motor 8 for rotationally driving the hoisting machine 7, and the car 1 are provided on a predetermined floor. And a brake device 9 for braking the motor 8 when the vehicle is landed. The machine base 5 is provided with a deflecting sheave 10 that warps the rope 3 so that the car 1 is balanced and separated from the weight 2.

  In addition, the present embodiment includes a control device 11 that controls traveling control of the car 1, that is, driving of the motor 8 and driving of the brake device 9. The control device 11 receives a door open detection signal output from a predetermined detection means when the car 1 is landed and the door of the car 1 is opened.

  Further, in the present embodiment, the car 1 is landed on a predetermined floor, the brake device 9 is actuated to brake the motor 8, and the car 1 moves while the door of the car 1 is open, that is, A rope brake 12 is provided that operates to grip the rope 3 and prevent the rope 3 from moving when the vehicle travels. The rope brake 12 is disposed so as to be able to grip a portion of the rope 3 located between the main sheave 6 and the deflecting sheave 10, for example.

  The elevator apparatus according to the first embodiment of the present invention detects a movement of the rope 3 and outputs a detection signal, and the rope brake 12 according to the detection signal output from the movement detection unit 20. And a processing unit that performs processing for operating the.

  The processing unit inputs the detection signal output from the movement detection unit 20, and the rope brake control unit that performs control to operate the rope brake 12 according to the command signal output from the control device 11. 13 and so on.

  As shown in FIG. 2, the movement detection unit 20 includes a roller-equipped encoder 24 provided with a roller that can be attached to and separated from the portion of the rope 3 that is attached to the hoisting machine 7 and is adjacent to the main sheave 6 around which the rope 3 is wound. Contains. When the rope 3 moves while the roller of the encoder 24 with roller is in contact with the rope 3, the roller rotates, and a rotation detection signal corresponding to the rotation of the roller is output to the control device 11.

  That is, the movement detection unit 20 includes a bracket 21 fixed on the machine base 5, a box unit 22 attached to the bracket 21 and storing an electromagnetic solenoid, and an electromagnetic solenoid stored in the box unit 22. A spring 23 to be sucked and released is also included, and the above-described encoder 24 with a roller is engaged with the end of the spring 23.

  FIG. 3 is a flowchart showing the processing operation in the first embodiment.

  In the first embodiment, when the car 1 approaches a predetermined floor and lands as shown in step S1 of FIG. 3, the control device 11 opens the door from the predetermined detection means as shown in step S2. It is determined whether a detection signal is input. If this determination is NO, the process returns to step S1.

  If the determination in step S2 is yes, as shown in step S3, the control device 11 stops energization of the electromagnetic solenoid of the movement detector 20 and opens the spring 23.

  As a result, the roller of the encoder 24 with the roller comes into contact with the portion of the rope 3 close to the main sheave 6 and is pressed against the rope 3 by the force of the spring 23 to start the movement monitoring shown in step S4, that is, the rope 3 has moved. Whether to start monitoring.

  The current situation is that the car 1 is stopped on a predetermined floor and the door of the car 1 and the door of the landing are opened. In this state, as shown in step S5, whether or not the car 1 has moved, that is, whether or not the door-opening traveling has been performed, is determined by the control device 11 based on the detection signal output from the roller-equipped encoder 24. The

  If it is determined in this step S5 that the car 1 has not moved, that is, that the detection signal is not output from the roller-equipped encoder 24 to the control device 11, the process proceeds to step S6.

  In step S6, it is determined whether or not the door of the car 1 is closed, that is, the control device 11 determines whether or not a door closing detection signal is input. If the door closing detection signal is not input, the door of the car 1 is in an open state, and the process returns to step S5.

  When it is determined in step S6 that the door of the car 1 is closed, that is, when a door closing detection signal is input to the control device 11, the box portion included in the movement detection unit 20 described above under the control of the control device 11 The electromagnetic solenoid housed in 22 is energized and the spring 23 is attracted.

  Thereby, the roller of the encoder 24 with a roller engaged with the spring 23 leaves | separates from the rope 3, and the monitoring with respect to the movement of the rope 3 is complete | finished as shown to procedure S8.

  When it is determined in step S5 described above that the car 1 has moved, that is, when the detection signal from the roller-equipped encoder 24 is output to the control device 11 due to the movement of the rope 3, the control device 11 uses the rope brake. A command signal is output to the control unit 13. Thereby, as shown to procedure S9, the rope brake control part 13 performs the process which operates the rope brake 12. FIG. By the operation of the rope brake 12, the rope 3 is gripped by the rope brake 12 and stops moving. In response to this, the car 1 stops immediately.

  As described above, the rope 3 moves when the door 1 starts to move while the door of the car 1 is opened. According to the first embodiment, the rope 3 moves at this time. The movement detection unit 20 immediately detects the movement of the rope 3 and the rope brake 12 is activated by the processing of the processing unit including the control device 11 and the rope brake control unit 13 to prevent the movement of the rope 3 and to move the car 1. Can be stopped.

  That is, this 1st Embodiment can shorten time until the car 1 stops after door opening driving | running | working starts. Therefore, the car 1 can be stopped before the car 1 accelerates, and the braking force on the rope 3 required for the rope brake 12 can be kept small. Thereby, 1st Embodiment can implement | achieve size reduction of the rope brake 12. FIG. Accordingly, the work of installing the rope brake 12 in the hoistway is facilitated, and the equipment cost of the elevator apparatus can be reduced.

  In addition, since the first embodiment is operated so that the roller of the rope-equipped encoder 24 is pressed against the rope 3 only while the car 1 is stopped on the predetermined floor, the durability of the rope-equipped echoda 24 is ensured. In addition, wear of the rope 3 due to the provision of the movement detection unit 20 can be suppressed.

  FIG. 4 is an enlarged side view showing the main configuration of the second embodiment of the present invention. In the second embodiment shown in FIG. 4, the bracket 21 of the movement detecting unit 20 is fixed to the hoisting machine 7, and the roller of the encoder 24 with roller included in the movement detecting unit 20 is used as the main sheave 6 of the hoisting machine 7. The structure is provided so as to be able to come in contact with and separate from the portion of the rope 3 in contact with the cable. Other configurations are the same as those of the first embodiment.

  In the first embodiment configured as described above, since the movement of the roller 3 is detected by sandwiching the rope 3 between the main sheave 6 and the roller of the encoder 24 with the roller, the movement of the rope 3 can be detected with higher accuracy. It can be detected by the attached encoder 24.

  FIG. 5 is an enlarged side view showing the main configuration of the third embodiment of the present invention. In the third embodiment shown in FIG. 5, the bracket 21 of the movement detection unit 20 is fixed to the machine base 5, and the roller of the encoder 24 with the roller included in the movement detection unit 20 is moved to the baffle sheave 10. The part is provided so as to be able to contact and separate. Other configurations are the same as those of the first embodiment. The third embodiment configured as described above can also achieve the same operational effects as the first embodiment.

  FIG. 6 is an enlarged side view showing the main configuration of the fourth embodiment of the present invention. In the fourth embodiment shown in FIG. 6, the movement detection unit that detects the movement of the rope 3 is configured by a rotary encoder 30, and the rotary encoder 30 is attached to the shaft of the main sheave 6. Other configurations are the same as those of the first embodiment.

  In the fourth embodiment configured as described above, since the movement of the rope 3 can be detected without the rotary encoder 30 coming into contact with the rope 3, the rope 3 may be worn due to the provision of the rotary encoder 30. Absent.

  FIG. 7 is an enlarged side view showing the main configuration of the fifth embodiment of the present invention. In the fifth embodiment shown in FIG. 7 as well, the movement detecting unit for detecting the movement of the rope 3 is configured by the rotary encoder 40, and the rotary encoder 40 is deflected and attached to the shaft of the sheave 10. Other configurations are the same as those of the first embodiment.

  As in the fourth embodiment, the fifth embodiment configured as described above can detect the movement of the rope 3 without the rotary encoder 30 coming into contact with the rope 3, so that the rotary encoder 30 is provided. The rope 3 is not worn.

DESCRIPTION OF SYMBOLS 1 Car 2 Balance weight 3 Rope 4 Machine room 5 Machine base 6 Main sheave 7 Hoisting machine 8 Motor 9 Brake device 10 Bending sheave 11 Control device 12 Rope brake 13 Rope brake control unit 20 Movement detection unit 21 Bracket 22 Box unit 23 Spring 24 Encoder with roller 30 Rotary encoder (movement detector)
40 Rotary encoder (movement detector)

Claims (7)

A car and a counterweight, a rope for connecting the car and the counterweight, a hoisting machine for moving the rope, a motor for rotating the hoisting machine, and the car landing on a predetermined floor A brake device that brakes the motor, a control device that controls the drive of the motor and the drive of the brake device, the brake device operates to brake the motor, and the door of the car opens. An elevator apparatus comprising a rope brake that operates to grip the rope and prevent the movement of the rope according to the control of the control apparatus when the car moves in a state of being
A movement detection unit that detects the movement of the rope and outputs a detection signal; and a processing unit that performs a process of operating the rope brake according to the detection signal output from the movement detection unit. Elevator equipment. The elevator apparatus according to claim 1,
The processing unit includes the control device that inputs the detection signal, and a rope brake control unit that performs control to operate the rope brake in response to a command signal output from the control device. apparatus. The elevator apparatus according to claim 1 or 2,
The said movement detection part is an elevator apparatus characterized by including the encoder with a roller provided with the roller which can be contacted / separated to the part of the said rope near the main sheave attached to the said winding machine, and the said rope is wound. The elevator apparatus according to claim 1 or 2,
The said movement detection part is an elevator apparatus characterized by including the encoder with a roller provided with the roller which can be contacted / separated to the part of the said rope which contacts the main sheave attached to the said winding machine, and the said rope is wound. The elevator apparatus according to claim 1 or 2,
The movement detecting unit includes an encoder with a roller including a roller that can come in contact with and separate from a portion of the rope adjacent to a deflecting sheave that warps the rope so as to separate the car from the counterweight. Elevator device. The elevator apparatus according to claim 1 or 2,
The said movement detection part consists of a rotary encoder attached to the axis | shaft of the main sheave which is attached to the said winding machine and the said rope is wound. The elevator apparatus according to claim 1 or 2,
An elevator apparatus comprising a rotary encoder attached to a shaft of a deflecting sheave that warps the rope so as to separate the car from the counterweight.