JP2013043757A - Control device and control method of hoisting machine for elevator device, and repairing method of the control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device and control method of a hoisting machine for elevator device, capable of executing smooth operation of a car or suppressing noise by properly keeping the distance of an opposite space portion between a brake drum and a brake pad.SOLUTION: When the distance of the opposite space portion between the brake pad 24 and the brake drum 22 is a predetermined value or more, current is applied to a stator winding wire 33 constituting an electric motor to warm at least the brake drum 22 by self-heating of the stator winding wire 33 while braking the brake drum 22 by the brake pad 24.

Description

  The present invention relates to an elevator hoist used for an elevator apparatus, and more particularly to an elevator hoist equipped with a braking mechanism, a control method, and a control device refurbishment method.

  In recent elevator equipment, do not provide a machine room in the upper part of the hoistway for storing machinery such as elevator hoisting machines (hereinafter referred to as hoisting machines) for the purpose of suppressing the height of the building. A so-called machine room-less elevator device in which machinery is provided in a hoistway has become widespread.

  In the case of this machine room-less elevator device, all devices including the hoisting machine conventionally installed in the machine room are installed in the hoistway.

  There are various configurations for installing the hoisting machine in the hoistway, but in order to install the hoisting machine in a relatively narrow gap between the carriage and the hoistway wall, it is installed so as to face the hoistway wall. A hoisting machine is required.

  In this thin hoisting machine, as disclosed in, for example, Japanese Patent Laid-Open No. 59-144835 (Patent Document 1), a sheave is rotatably supported on a main shaft fixed to a housing, and a stator is attached to the housing. The sheave is provided with a mover arranged opposite to the stator to form an outer rotor type electric motor. Further, when the car is stopped after the control operation by the electric motor provided in the hoisting machine, the rotor is integrated with the rotor. An electromagnetic brake mechanism (hereinafter referred to as an electromagnetic brake device) is known in which a brake pad is pressed against the outer peripheral portion of a rotating brake drum to brake the brake drum.

JP 59-144835 A

  In a conventional hoisting machine, an electromagnetic brake device is provided in a casing portion located outside a brake drum formed on a mover disposed opposite to a stator.

  For this reason, the heat of the stator winding and the rotor generated when the electric motor constituting the hoisting machine operates is transmitted to the brake drum.

  When the operation of the electric motor becomes frequent, the brake drum rises in temperature due to the heat of the rotor winding and the stator, and greatly expands.

  When the brake drum expands, the distance between the brake drum and the electromagnetic driving device that drives the brake pad fixed to the opposite housing portion changes. Specifically, since the outer periphery of the brake drum expands, there is a phenomenon in which the distance between the opposing gaps between the brake drum and the brake pad that comes into contact with and separates from the brake pad is excessively reduced.

  Therefore, in the normal design specifications, considering the influence of the thermal expansion due to the operation of the electric motor, the thermal expansion does not occur so that a predetermined distance is maintained in the gap between the brake drum and the brake pad when the thermal expansion occurs. The distance between the opposing gaps was set to be longer.

  However, recently, users have been required to smoothly operate the elevator car and to suppress noise generated in the elevator apparatus.

  However, since the distance between the opposing gaps in the steady state is set large as described above, the time to start braking differs depending on whether the brake drum is thermally expanded or not thermally expanded. Since the distance between the opposing air gaps is set to be large, the brake pad strongly collides with the brake drum and generates a loud sound when the electromagnetic drive unit is demagnetized, and the hoisting machine is installed The problem that a complaint comes out in the hierarchy where it is done is appearing.

  SUMMARY OF THE INVENTION An object of the present invention is to control a hoisting machine for an elevator apparatus that performs a smooth operation of a car or suppresses the generation of noise while maintaining the distance between the opposing gaps of the brake drum and the brake pad appropriately. And providing a control method.

  A feature of the present invention is that in a control device used in a hoisting machine in which a brake drum provided on a rotor constituting an electric motor is braked or released by a brake pad of an electromagnetic brake device, the brake pad and the brake drum are opposed to each other. When the gap distance is greater than or equal to the predetermined distance, the brake drum is braked by the brake pad, and at least the rotor and the brake drum are warmed by energizing the stator winding constituting the motor and self-heating of the stator winding. It is a thing.

  Even if the temperature between the brake drum and the brake pad is low and the distance between the opposing gaps between them is somewhat large, at least the temperature of the rotor and brake drum rises due to self-heating of the stator windings. The distance of the gap between the brake pad and the brake pad becomes a predetermined value. When the brake drum is thermally expanded and when it is not thermally expanded, the time to start braking is different, which may hinder smooth car operation. Alternatively, since the distance between the opposed gaps is set large, it is possible to solve the problem that when the electromagnetic drive device is demagnetized, the brake pad strongly collides with the brake drum and generates a loud sound.

It is sectional drawing which shows the general structure of a machine room less elevator apparatus. It is sectional drawing at the time of arrange | positioning a passenger car, a counterweight, and the elevator machine hoist to a hoistway. FIG. 2 is a front view of the elevator machine hoist illustrated in FIG. 1. FIG. 4 is a sectional view of the elevator machine hoist shown in FIG. 3. It is a block diagram which shows the structure of the control apparatus of the winding machine for elevator apparatuses which becomes one Example of this invention. It is a flowchart which shows the warming-up operation program process of the control apparatus shown in FIG. It is a block diagram for demonstrating rewriting of the control apparatus of the winding machine for elevator apparatuses which becomes another Example of this invention.

Hereinafter, an elevator hoisting machine according to an embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a cross-sectional view for explaining a general configuration of a machine room-less elevator, and reference numeral 10 is an architecture. It is a hoistway provided in an object, and an elevator is housed inside.

  The elevator has a car 11, a counterweight 12 and a hoisting machine 13 as main components. A pulley 14 is attached to the lower part of the car 11, and a pulley 15 is attached to the counterweight 12. A sheave 16 is attached to 13 rotation shafts (= rotation shaft of an electric motor).

  Here, although the hoisting machine 13 is mounted on the floor surface at the bottom of the hoistway 10, the hoisting machine 13 may be attached to a beam fixed near the top of the hoistway 10.

  A beam 17 is fixed to the upper part of the hoistway 10, and intermediate pulleys 18A and 18B are attached to the beam 17, so that the winding direction of the main rope 19 is changed.

  One end of the main rope 19 is attached to the upper wall surface of the hoistway 10, and starting from this end, the pulley 15 of the counterweight 12, the first intermediate pulley 18A, the sheave 16 of the hoisting machine 13, and the second intermediate The other end is attached to the upper wall surface of the hoistway 19 through the pulley 18B and the pulley 14 of the car 11.

  This roping is called 2-to-1 roping, and the hoisting force of the hoisting machine 13 is reduced using the principle of a moving pulley.

  A shock absorber 191 is provided at the lower portion of the counterweight 12 to buffer the impact caused by the collision of the counterweight 12. It is what has been.

  In such an elevator, an operation command is given to an electric motor, a braking mechanism, and the like of the hoisting machine 16 by a controller (not shown), and the car 11 moves up and down toward a predetermined level of the building by the operation command. It is.

  FIG. 2 is a sectional view of the hoistway 10 in which an elevator using a thin elevator hoisting machine targeted by the present invention is arranged. In the hoistway 10, a car 11 and a counterweight 12 connected by a main rope 19 (not shown) are arranged so as to be able to be raised and lowered.

  A thin hoisting machine 13 is installed in a gap between the hoistway 10 and the car 11, and the thin hoisting machine 13 includes a housing assembly 20 that houses a stator that constitutes an electric motor unit, A rotor arranged opposite to the stator and constituting an electric motor part, and a sheave assembly 21 integrally formed with the rotor and a sheave 16 around which the main rope 19 is wound. The sheave 6 is rotated together with the rotor, and the car 11 is moved up and down via the main rope 19.

  Since the inspection work of the thin hoisting machine 13 is normally performed from the car 11 side, the casing assembly 20 of the hoisting machine 13 is arranged toward the car 11 side.

  FIG. 3 is a front view of the elevator machine hoisting machine 13, and the main rope 19 that connects the car 11 and the counterweight 12 to both ends is disposed on the front side of the elevator hoisting machine 13. After being wound around the sheave 16, both ends are extended upward.

  The sheave 16 is rotatably held with respect to the housing assembly 20. As will be described in detail later, an outer rotor type electric motor is configured between the outer periphery of the sheave 16 and the housing assembly 20. The outer peripheral surface on the rotor side of the outer rotor type electric motor is used as the brake drum 22.

  The brake drum 22 is integrally provided on the outer periphery of the sheave 16, is driven to rotate by an outer rotor type electric motor, and is braked by a pair of electromagnetic brake devices 23 having the same configuration respectively disposed at the upper and lower portions of the housing assembly 20. It has a configuration.

  The electromagnetic brake device 23 includes a brake pad 24 that contacts the outer peripheral surface of the brake drum 22, a pad holding portion 25 that holds the brake pad 24, and a sheave 16 that presses the brake pad 24 against the outer peripheral surface of the brake drum 22. A brake spring 26 that applies a braking force to the brake drum 26, and an electromagnetic drive coil portion 27 that compresses the brake spring 26 to release the brake pad 24 from the outer peripheral surface of the brake drum 22 so that the sheave 16 can rotate. doing.

  The brake spring 26 presses the movable iron core 28 built in the electromagnetic brake device 23 toward the brake drum 22, and as a result, the movable iron core 28 pushes the brake pad 24 through the pad holding portion 25 to the outer periphery of the brake drum 22. The sheave 16 has a function of keeping the sheave 16 in a braking state by pressing strongly.

  On the other hand, the electromagnetic drive coil portion 27 has an electromagnet function, and an internal stator is excited by flowing a current through the electromagnetic drive coil portion 27 to attract the movable iron core 28. The brake pad 24 is driven away from the brake drum 22 against the spring force of the brake spring 26 to release the braking force.

  Accordingly, when the energization to the electromagnetic drive coil portion 27 constituting the electromagnet is interrupted, the electromagnetic drive coil portion 27 is demagnetized, and therefore the brake pad 24 is pressed against the outer peripheral surface of the brake drum 22 by the spring force of the brake spring 26. The vehicle 16 is braked.

  At this time, since the positions where the brake pads 24 of both electromagnetic brake devices 23 contact the brake drum 22 are vertically opposed to the object as shown in the figure, the pressing force applied from the brake pad 24 to the brake drum 22 is The sheave 16 is offset by the brake device 23 and does not tilt in the bending direction.

  Next, a specific configuration of the hoisting machine 4 will be described with reference to FIG. The housing body 29 of the housing assembly 20 has a boss portion 30 formed at the center thereof, and one end of a fixed main shaft 31 is inserted into the boss portion 30 and fixed. Further, the sheave assembly 21 is rotatably supported on the free end side of the fixed main shaft 31 to constitute an electric motor having a cantilever support structure.

  In addition, an annular storage recess 32 located on the outer peripheral side of the boss 30 of the housing body 29 stores electrical components of a stator 33 (including a stator winding) that constitutes the motor unit.

  Further, a sheave housing 35 is rotatably supported on the free end side of the fixed main shaft 11 via a bearing 34. The sheave housing 35 is connected to an electric machine portion such as a sheave 16 and a rotor 36 constituting an electric motor portion. It is constructed integrally. Here, the casing body 29 is manufactured by casting a cast iron or the like to form an approximate shape and then machining a portion requiring dimensional accuracy.

  As described above, the hollow boss portion 30 is integrally formed at the center of the housing body 29, and the stator 33 (including the stator winding portion) and the like are accommodated in the outer periphery thereof. It is cast and manufactured so as to form an annular storage recess 32 formed in a substantially cylindrical shape with a bottom.

  A rotor 36 is disposed opposite to the stator 33 via a predetermined gap using the storage recess 32, and a plurality of permanent magnets 37 are fixed to the inner peripheral surface of the rotor 36. . Therefore, this constitutes the rotor of the outer rotor type electric motor.

  Here, the brake drum 22 is integrally formed on the outer periphery of the rotor 36, and the brake drum 22 is formed in an annular shape on the outer peripheral side of the rotor 36.

  The sheave housing 35, the sheave 16 and the rotor 36 are not integrally formed, but are manufactured as separate parts that can be divided separately, and then fixed by fitting such as bolts or shrink fitting. Is also good.

  A temperature sensor 41 is provided in the housing recess 32 of the housing body 29 and has a gap detection function for indirectly estimating whether or not the opposing gap between the brake drum 22 and the brake pad 24 is greater than a predetermined value. doing.

  As described above, the permanent magnets 37 arranged inside the rotor 36 are alternately arranged with N poles and S poles in the circumferential direction, and the number of N poles and S poles is the same and the number is the number of poles. It is half.

  Such a rotor 36 is opposed to the outer side of the stator 33 disposed in the housing recess 32 integrally formed with the housing main body 29 in a radial direction with a minute gap interposed therebetween. With this structure, a so-called outer rotor is disposed. Constitutes a type of electric motor. The rotational torque generated in the electric motor unit is transmitted to the sheave 16 via the rotor 36 and drives a plurality of main ropes 19 wound around the sheave 16.

  When the sheave 16 is rotated by the hoisting machine 13 and the car 11 is moved up and down via the main rope 19, the electromagnetic drive coil unit 27 is excited against the brake spring 12 of the electromagnetic brake device 23 to release the release force. give. On the other hand, when the car is stopped, after the operation control by the electric motor, the energization to the electromagnetic drive coil unit 27 is stopped and demagnetized, and the urging force by the brake spring 26 is applied to the brake pad 24 so that the brake pad 24 presses against the brake drum 22. By doing so, the sheave 16 and the electric motor are braked.

  In the hoisting machine 13 using such an outer rotor type electric motor, the brake drum 22 and the brake pad 24 exist on the outer periphery of the outer rotor type electric motor having the rotor 36 and the stator 33.

  For this reason, when the operation of the electric motor frequently occurs, the temperature of the rotor 36 and the brake drum 22 rises higher than that of the housing body 29 due to the resistance heat of the stator 33 (including the stator winding portion), and the thermal expansion greatly occurs. Due to the difference in the amount of thermal expansion from the housing body 29, a phenomenon occurs in which the distance between the opposing gap portions of the brake drum 22 and the brake pad 24 is excessively reduced.

  Therefore, in consideration of the effect of thermal expansion due to resistance heat of the stator 33 (including the stator winding portion), a predetermined distance required between the opposing gap portions of the brake drum 22 and the brake pad 24 when the thermal expansion occurs. In order to maintain the distance, the distance between the opposing gaps when the thermal expansion does not occur is set longer.

  However, as described above, since the distance between the opposing gaps between the brake drum 22 and the brake pad 24 is set large in a cold state (a state where the brake drum 22 and the rotor 36 are cold), the temperature of the brake drum 22 increases. When the electromagnetic drive coil 27 is demagnetized because the time until the start of braking differs depending on when the temperature is not increased and the operation of the smooth car is hindered or the distance between the opposing gaps is set large. In addition, the problem that the brake pad 24 strongly collides with the brake drum 22 to generate a loud sound has been developed.

  As described above, when the distance between the opposed gaps between the brake drum 22 and the brake pad 24 is adjusted based on the state of thermal expansion, the distance between the opposed gaps between the brake drum 22 and the brake pad 24 must be set large in the cold state. No longer get.

  Therefore, in the embodiment of the present invention, when the brake drum 22 or the rotor 36 is cold, the brake drum 22 is forcibly braked by the brake pad 24, and at this time, the stator 33 (stator winding portion) ), The stator 33 itself is heated by the current flowing to warm the rotor 36 and the vicinity of the brake drum 22 (hereinafter referred to as warm-up), and the distance between the gaps facing the brake drum 22 and the brake pad 24 is thermally expanded. In this state, the distance between the opposing gaps between the brake drum 22 and the brake pad 24 is maintained substantially constant.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 5 and 6. In FIG. 5, the warm-up control device 38 is composed of the following functional components.

  A “car call signal” is acquired from the elevator control device 39, and the “call-free time TA” at which this “car call signal” does not arrive has passed a predetermined “set time Tα”. A time condition acquisition unit 40 is provided for detecting that the resting state after the end has continued for “set time Tα” or more. Thereby, the function of monitoring the operating state of the hoisting machine 13 is realized.

  Further, using the temperature sensor 41 disposed in the housing recess 32 of the housing body 29, it is indirectly determined whether or not the “distance GB of the opposed gap portion” between the brake drum 22 and the brake pad 24 is equal to or greater than the “set value Gβ”. A gap condition detection unit 42 that estimates the target is provided.

  In this case, the “distance GB of the opposed gap” is indirectly estimated based on the temperature, but a sensor that directly measures the “distance GB of the opposed gap” may be used.

  Further, a “car call signal” is acquired from the elevator control device 39, and the presence / absence of the “car call signal” is determined to detect that the “car call signal” is received from the elevator control device 39 during the warm-up operation. A car call detection unit 43 is provided.

  Also, in order to determine whether it is a time zone in which the warm-up operation is performed or a time zone in which the warm-up operation is not required, for example, time zone management that manages the high operation time zone separately from the low operation time zone A portion 44 is provided.

  In addition, a storage unit 45 made of a flash ROM or the like that stores a control program such as a warm-up operation program described later is provided. Since the storage unit 45 is constituted by a flash ROM, the program can be rewritten from the outside, and can be rewritten using a dedicated rewriting device when upgrading the version.

  Further, a warm-up operation management unit 46 for performing the warm-up operation of the hoisting machine 13 according to the warm-up operation program is provided, and this also has a function of driving the electric motor and the electromagnetic brake device 23.

  Further, signals and data of the time condition acquisition unit 40, the gap condition detection unit 42, the car call detection unit 43, the time zone management unit 44, the storage unit 45, and the warm-up operation management unit 46 are input and output, and the warm-up operation program A control unit 47 that controls each means of the electric motor of the hoisting machine 13 and the electromagnetic brake device 23 is provided.

  Next, the processing operation by the warm-up control device 38 will be described with reference to the flowchart shown in FIG. In this case, the warm-up control function is executed by a microcomputer comprising a microprocessor or the like constituting the control unit 47.

  The execution program for executing the function of the warm-up control device 38 is activated by a time interrupt signal that arrives at predetermined time intervals, but other programs associated with the execution program are also activated by a time interrupt signal different from this. The

  When the warm-up control program is activated, it is determined in step 60 (hereinafter step is abbreviated as S) whether the warm-up operation needs to be performed or not. In the case of the present embodiment, the warm-up operation is executed during the high operation time zone. This process corresponds to the function of the time zone management unit 44.

  The time zone is monitored in S60, and for example, when it is detected that a high operating time zone from 8 o'clock to 20 o'clock has been reached, it is determined as a time zone for executing the warm-up operation. Here, the time zone managed by the time zone management unit 29 is not limited to the high operating time zone from 8 o'clock to 20 o'clock, and an arbitrary time zone can be set depending on the use situation of the elevator unique to the building. Although 24 hours a day may be managed, the operation of the warm-up control device 38 can be suppressed by setting a limited time zone.

  If it is determined in S60 that it is not the time zone managed by the time zone management unit 44, the process returns to S60 again. If it is determined in S60 that the time zone management unit 44 is managing, the process proceeds to S62 and is suspended. Measure time.

  This stop time condition is measured from the “car call signal” managed by the elevator control device 39, by measuring the “no call time TA” when there is no “car call” after the last operation of the car 11. The determination is based on the fact that the “no time TA” has passed a preset “set time Tα”. If this “set time Tα” has not elapsed, the temperature in the vicinity of the brake drum 22 is increased by the resistance heat of the stator 33 (including the stator winding portion) due to the previous operation of the car 11, and thus In this state, it is determined that the warm-up operation is unnecessary. This process corresponds to the function of the time condition acquisition unit 40.

  If it is determined in S62 that the “set time Tα” has not elapsed, the process returns to S60 again. If it is determined in S62 that the “set time Tα” has elapsed, the process proceeds to S64 to determine the gap condition. That is, since it is difficult to accurately determine whether or not the warm-up operation is necessary only under the condition that the “no-call time TA” has passed the “set time Tα” in S62, the gap condition is satisfied in Step S64. Determine whether or not.

  The gap condition at this time is to estimate that the “distance GB between the opposed gaps” between the brake drum 22 and the brake pad 24 described above is equal to or greater than a preset “set value Gβ”. This process corresponds to the function of the gap condition acquisition unit 42.

  Here, the temperature of the storage recess 32 when the “opposite gap distance GB” between the brake drum 22 and the brake pad 24 exceeds a preset “set value Gβ” is measured in advance. It is defined as a set temperature Tβ ″.

  Therefore, in S64, the temperature of the storage recess 32, in other words, the “temperature TB” in the vicinity of the brake drum 22 is measured by the temperature sensor 41, and it is determined whether or not it is less than the defined “set temperature Tβ”. It is indirectly estimated that the distance GB ”is equal to or greater than the“ set value Gβ ”.

  Although it is not easy to install the temperature sensor 41 on the driving side of the sheave 6 and the rotor 20 shown in FIG. 4, in this embodiment, the temperature sensor is placed in the housing recess 32 that houses the stator 17 of the housing body 29. Since 41 is arranged, the “temperature TB” can be easily obtained.

  In the present embodiment, it is determined using the temperature detected by the temperature sensor 41 that the “distance GB of the opposed gap portion” is equal to or greater than the “set value Gβ”. However, a simple method other than the temperature is used. If it can be replaced, the configuration for acquiring the function of the gap condition acquisition unit 42 can be further simplified.

  For example, the resistance value of the stator 33 (stator winding portion) is obtained from the current and voltage of the stator 33 (stator winding portion) of the electric motor, and the resistance value has temperature dependence. Then, the temperature of the brake drum 22 may be estimated, and further, the “distance GB of the opposed gap” may be estimated.

  In this case, if the resistance value of the stator winding 33B is smaller than the “set resistance value”, it is determined that the temperature is low, and if it is greater than the “set resistance value”, it is determined that the temperature is high, and the “opposite gap distance GB” is determined. Is estimated. With such a configuration, it is not necessary to provide the temperature sensor 41 separately, and the configuration is simplified.

  Moreover, according to such a method, since it is not necessary to newly provide the temperature sensor 41, it becomes easy to add a new function like a present Example to the existing elevator apparatus. Of course, in this case, it is necessary to rewrite the program stored in the storage unit 45 by a dedicated rewriting device. This will be described in Example 2 described later.

  In any case, when it is determined in S64 that the “distance GB between the opposed gaps” between the brake drum 22 and the brake pad 24 is equal to or greater than the “set value Gβ”, the process proceeds to S68 and the warm-up operation is executed for a predetermined time. .

  This warm-up operation stops the energization of the electromagnetic drive coil portion 27 of the electromagnetic brake device 23 to make it demagnetized, and the brake pad 24 is kept in a braking state in which the brake pad 24 is strongly pressed against the outer peripheral portion of the brake drum 22. The stator 33 (stator winding portion) is energized to heat the stator 33 (stator winding portion) itself.

  By this warm-up operation, at least the temperature of the rotor 36 and the brake drum 22 rises and thermally expands, so that the “distance GB of the facing gap” between the brake drum 22 and the brake pad 24 is equal to or less than the “set value Gβ”. Control to

  If it is determined in S64 that “distance GB of the opposing gap” is equal to or smaller than “set value Gβ”, the process proceeds to S66 and it is determined whether the warm-up operation is currently in progress. If the warm-up operation is not being performed, the process returns to S60 again. If the warm-up operation is being performed, the “distance GB of the opposed gap portion” between the brake drum 22 and the brake pad 24 is already equal to or less than the “set value Gβ”. Proceed to and end the warm-up operation.

  On the other hand, it is determined in S70 whether or not there is a “call” for the car 11 while the warm-up operation is being executed in S68. In this case, a signal from the elevator control device 39 is used to monitor whether or not there is a “call” for the car. If there is a “call” for the car 11, the process proceeds to S70 to end the warm-up operation. This process corresponds to the function of the car call detection unit 43. In this case, since the car 11 is operated, the warm-up operation is terminated and the brake pad 24 is released from the brake drum 22.

  If there is no “call” for the car 11 in S70, the process proceeds to S72 to determine whether or not the warm-up operation has been executed for a predetermined time. If the warm-up operation for a predetermined time is not executed, the process returns to S68 again to continue the warm-up operation.

  If it is determined in S72 that the warm-up operation for a predetermined time has been completed, the process proceeds to S74 and the warm-up operation is terminated. Since the function of the warm-up control device 38 is activated by a time interrupt signal that arrives at predetermined time intervals, the same operation is repeated every time an interrupt signal is received to execute or end the warm-up operation. is there.

  The above has described the basic operation of the present embodiment, but various applications described below can also be realized.

For example, when there is no “call” for the car 11 in S70, the warm-up operation is continued by returning to S68, but the warm-up operation can be terminated at various timings. For example, returning to S64, the determination of the gap condition is repeated, and if the gap condition has not been recovered, the warm-up operation is continued in S68. On the other hand, if it is determined in S64 that the gap condition has been recovered, the warm-up is performed in S66. It is determined whether or not the operation is continued, and if it is during the warm-up operation, the process proceeds to S74 and the warm-up operation is terminated.
According to such an end method of the warm-up operation, the warm-up operation can be ended when the recovery of the gap condition is determined in S64.

  Further, the warm-up operation time can be set in advance in step S68. Specifically, a correspondence table in which the warm-up time is determined according to the “opposite gap distance GB” is provided in advance, and the warm-up time can be made variable based on this correspondence table. It is. In this case, since the distance GB ″ of the opposed gap is not measured, a table in which the correspondence relationship between the temperature obtained by the temperature sensor 41 and the warm-up operation time is prepared in advance is obtained based on this table. The warm-up operation may be terminated in the warm-up operation time.

  By providing such a warm-up operation device 38, even if the temperature between the brake drum 22 and the brake pad 24 is low and the distance between the opposing gaps is somewhat large, at least the rotor 36 or Since the temperature of the brake drum 22 rises, the distance between the opposing gaps can be maintained at the initial value.

  Therefore, the distance between the opposing gaps between the brake drum 22 and the brake pad 24 is a predetermined value, and the time until the start of braking differs depending on whether the temperature of the brake drum increases due to friction or when the temperature does not increase. Solves the problem that the brake pad strongly collides with the brake drum and generates a loud sound when the electromagnetic drive device is demagnetized because the distance between the opposing gaps is set large because the car cannot be operated It can be done.

  The present invention can be applied not only to the hoisting machine 13 shown in FIGS. 3 and 4, but also to hoisting machines having other configurations. You may provide in the apparatus 39. FIG.

  According to the elevator apparatus hoisting machine control apparatus according to the present embodiment, the gap condition acquisition unit 42 causes the “distance GB of the opposed gap portion” between the brake drum 22 and the brake pad 24 to be greater than the “set value Gβ”. When the electromagnetic brake device 23 is forcibly shifted to a braking state by the warm-up operation management unit 46, the stator 33 (stator winding portion) constituting the motor is energized at this time. The stator 33 (stator winding portion) itself is heated to perform warm-up operation.

  For this reason, when the temperature of the brake drum rises and when the temperature does not rise, the time to start braking differs, which may hinder smooth car operation, or the distance between the opposing gaps is set large. When the device is demagnetized, it can solve the problem that the brake pad strongly collides with the brake drum and generates a loud sound, and it is not necessary to attach the sound insulation material that was used for noise countermeasures, and the cost can be reduced. Can be expected.

  Further, the warm-up operation control device 38 according to this embodiment is in a braking state in which the brake pad 24 of the electromagnetic brake device 23 is pressed against the outer peripheral portion of the brake drum 22 and is applied to the stator 33 (stator winding portion). Since it is to generate heat by energization, for example, it is implemented without the need for additional heating elements such as heating the entire hoisting machine or the entire electromagnetic brake device including the rotor with an electric heater, etc. The number of parts can be reduced as much as possible without complicating the configuration.

  In addition, according to the elevator hoist control apparatus of this embodiment, the time condition acquisition unit 40 detects that the “no call time TA” has passed the “set time Tα” and acquires the gap condition. The temperature sensor 41 provided in the housing recess 32 of the casing 29 detects that the “opposite gap distance GB” between the brake drum 22 and the brake pad 24 is larger than the “set value Gβ” by the portion 42. Then, the warm-up operation management unit 46 forcibly shifts the electromagnetic brake device 23 to the braking state, and at this time, the stator 33 (stator winding portion) constituting the electric motor is energized to thereby stabilize the stator 33 (stator). The winding part) itself generates heat to perform warm-up operation.

  For this reason, in addition to the above effect, the temperature sensor 41 for measuring the temperature is provided in the non-rotating casing 29, so that the temperature sensor 41 can be easily attached and has a simple configuration and high reliability. It becomes possible to manage the distance GB ″ of the opposing gap.

  In addition, the time zone in which the warm-up operation needs to be performed varies depending on the use state of the building where the elevator apparatus is installed. For example, the time zone management unit 44 that manages the high operation time zone in distinction from the low operation time zone. When the time condition acquisition unit 40 determines that the time condition is not satisfied, or when the gap condition acquisition unit 42 determines that the gap condition is not satisfied, the warm-up operation is not performed. Since the warm-up operation is not performed when the car 11 is hardly operated, an energy saving effect can be expected.

  The elevator hoisting machine control device described so far is an elevator hoisting machine control device that is manufactured at a product factory when it is delivered to a building in which an elevator device is newly installed. However, the present invention can solve the above-described problems with the same concept even in an existing elevator.

  The specifications of the hoisting machine control device are determined by the specifications at the time of manufacture of the existing elevator device. Recently, the user has been able to smoothly operate the elevator car and suppress the noise generation by the elevator device. It has been demanded.

  Therefore, as a matter of course, in these existing elevator devices, when the temperature of the brake drum rises due to friction and when the temperature does not rise, the time to start braking differs, which may impede smooth car operation, Since the distance between the parts is set large, there is a problem that the brake pad strongly collides with the brake drum and generates a loud sound when the electromagnetic driving device is demagnetized.

  In order to solve such problems, there is a method of newly replacing with a new hoisting machine or control device adopting the above-described configuration, but the existing elevator apparatus is used as it is because of the cost for replacement. It is desirable to solve the above problems.

  Therefore, in the present invention, the warm-up operation as described in the first embodiment can be performed by rewriting the program in the storage unit provided in the elevator control device 39 from the outside.

  In FIG. 7, the elevator control device 39 is provided with a CPU (arithmetic unit) 48, an input / output circuit 49, a storage device 50, and the like.

  The CPU 48 has a function of performing calculation for executing control of the car 11 and hoisting machine from an input signal, and a function of outputting the calculated result to an electric motor of the hoisting machine, an electromagnetic brake device, and the like. .

  The input / output circuit 49 receives a position signal of the car 11, a car call signal, a current signal and a voltage signal of an electric motor constituting the hoisting machine, a signal indicating an operation status of the electromagnetic brake device 23 of the hoisting machine, etc. It has a function of outputting a drive signal of a hoisting motor for operating the car 11, a drive signal of an electromagnetic brake device 23 of the hoisting machine, and the like. These input / output signals are normally used in existing elevator apparatuses.

  The storage circuit 50 temporarily stores a program for executing various calculations by the CPU 48, a flash ROM (Flash ROM: hereinafter referred to as FROM) 51 for storing constants used in the calculation, and various calculation results during the calculation. It is composed of a dynamic RAM or the like that serves as a work area to be stored in the memory.

  The FROM 51 is a rewritable semiconductor fixed memory, and the function of the warm-up operation control device 38 described in the first embodiment is installed in the FROM 51 as a control program.

  Since the elevator controller 39 is provided with a terminal to which the program rewriting device 52 is connected, rewriting is executed when the program rewriting device 52 is connected to this rewriting terminal. Therefore, the warm-up operation can be executed by rewriting the control program and constants from the outside.

  When a repair request for solving the above-described problem is received from the building owner or the like, the control program and constants of the control device 39 of the hoisting machine 13 are rewritten.

  Since the program rewriting device 52 is provided with a disk reading mechanism, a disk 53 in which a rewriting program is described is set in the disk reading mechanism, and the rewriting program is transferred to the hard disk in the program rewriting device. .

  The rewriting program is provided with a function that performs the same function as that of the first embodiment. Specifically, the time condition acquisition function 54, the gap detection function 55, the car call detection function 56, the time management detection function 57, and the warming function. A program for executing the machine operation management function 58 is described.

  The program rewriting device 52 reads the rewriting program from the built-in hard disk, transfers it to the elevator control device 39, and stores it in the FROM 51. At this time, since the CPU 48 of the control device 39 has a watchdog timer (a function for resetting the CPU when the program is not executed due to some abnormality), the function of the watchdog timer is stopped at the time of rewriting so as not to be reset. A watchdog timer invalid signal is input from the rewriting device 52.

  As described above, when the rewriting program is transferred to the FROM 51, the elevator control device 39 can execute the warm-up operation similar to the first embodiment.

  Here, in the first embodiment, since the “distance GB of the opposed gap portion” is estimated using the temperature detected by the temperature sensor 41, it is necessary to newly prepare the temperature sensor 41, and the existing elevator apparatus It is not easy to install. For this reason, in this second embodiment, instead of the temperature sensor 41, the “distance GB of the opposed gap portion” is estimated from the resistance value obtained from the current and voltage of the stator 33 (stator winding portion), and the temperature sensor 41 As an alternative.

  That is, the temperature of the brake drum 22 is estimated by utilizing the temperature dependency of the resistance value obtained from the current and voltage of the stator 33 (stator winding portion) of the electric motor. The distance GB ″ is estimated. In this case, if the resistance value of the stator winding 33B is smaller than the “set resistance value”, it is determined that the temperature is low, and if it is greater than the “set resistance value”, it is determined that the temperature is high, and the “opposite gap distance GB” is determined. Is estimated.

  Therefore, according to this, warm-up operation is possible without newly providing the temperature sensor 41 in the hoisting machine of the existing elevator apparatus.

  Thus, also in this embodiment, as in the first embodiment, the distance between the opposing gaps between the brake drum 22 and the brake pad 24 becomes a predetermined value, and the temperature rises when the brake drum rises in temperature. When it does not, the time to start braking will be different and it will hinder smooth car operation, or the distance between the opposing gaps is set large, so the brake pad will be applied to the brake drum when the electromagnetic drive is demagnetized. It can solve the problem of a strong collision and a loud sound.

DESCRIPTION OF SYMBOLS 10 ... Hoistway, 11 ... Ride car, 12 ... Counterweight, 13 ... Hoisting machine, 5 ... Housing, 16 ... Sheave, 19 ... Main rope, 22 ... Brake drum, 23 ... Electromagnetic brake device, 24 ... Brake pad ,
26 ... Brake spring, 27 ... Electromagnetic drive coil part, 28 ... Movable iron core, 31 ... Fixed main shaft, 30 ... Boss part, 32 ... Storage recess, 33 ... Stator (including winding part), 36 ... Rotor, 37 ... Permanent magnet, 38 ... warm-up operation control device, 39 ... elevator control device, 40 ... time condition acquisition unit, 41 ... temperature sensor, 42 ... gap condition acquisition unit, 43 ... car call detection unit, 44 ... time zone management unit, 45 ... Storage unit, 46 ... Warm-up operation management unit, 47 ... Control unit.

Claims (9)

A sheave around which a main rope for raising and lowering a car is wound, a rotor that rotationally drives the sheave, a brake drum that rotates together with the rotor, a stator that is disposed to face the rotor, and the fixing An elevator used in a hoisting machine comprising a stator winding wound around a child, a brake pad for applying a braking force to the brake drum, and an electromagnetic coil for driving a movable iron core connected to the brake pad. In the control device of the machine hoisting machine,
When the distance between the opposing gaps of the brake pad and the brake drum is a predetermined distance or more, the brake drum is braked by the brake pad, and the stator winding constituting the motor is energized to energize the stator winding. A control device for a hoisting machine for an elevator apparatus, wherein at least the brake drum is warmed by self-heating of a wire. A sheave around which a main rope for raising and lowering a car is wound, a rotor that rotationally drives the sheave, a brake drum that rotates together with the rotor, a stator that is disposed to face the rotor, and the fixing An elevator used in a hoisting machine comprising a stator winding wound around a child, a brake pad for applying a braking force to the brake drum, and an electromagnetic coil for driving a movable iron core connected to the brake pad. In the control device of the machine hoisting machine,
A time condition acquisition unit that detects that at least a call-free time of the car has passed a predetermined set time, and a distance between the brake pad and the opposed gap portion of the brake drum is equal to or greater than a predetermined value. When the gap condition acquisition unit to detect and the time condition acquisition unit detect that the set time has passed, and the gap condition acquisition unit detects that the distance of the opposing gap is greater than or equal to a predetermined value, the brake A warm-up operation management unit is provided that brakes the brake drum with a pad and warms at least the rotor and the brake drum by self-heating of the stator winding by energizing the stator winding constituting the electric motor. A control device for an elevator machine hoisting machine.   3. The elevator hoisting machine control device according to claim 2, wherein the gap condition acquisition unit detects a temperature in the vicinity of the brake drum, and if the temperature is equal to or lower than a predetermined temperature, the brake pad and the brake drum are A control device for a hoisting machine for an elevator apparatus, characterized in that the distance of the opposing gap is determined to be equal to or greater than a predetermined value.   3. The elevator hoisting machine control device according to claim 2, wherein the warm-up operation management unit brakes the brake drum and makes the warm-up time for energizing the stator winding variable. A control device for a hoisting machine for an elevator apparatus.   5. The elevator hoisting machine control device according to claim 4, wherein a warm-up time for braking the brake drum and energizing the stator winding is a distance between the brake pad and the opposing gap portion of the brake drum. A control device for a hoisting machine for an elevator apparatus, characterized in that the longer the distance, the longer the warm-up time. A sheave around which a main rope for raising and lowering a car is wound, a rotor that rotationally drives the sheave, a brake drum that rotates together with the rotor, a stator that is disposed to face the rotor, and the fixing An elevator used in a hoisting machine comprising a stator winding wound around a child, a brake pad for applying a braking force to the brake drum, and an electromagnetic coil for driving a movable iron core connected to the brake pad. In the control device of the machine hoisting machine,
The controller is
(A) determining the distance between the opposing gap between the brake pad and the brake drum, and determining whether the distance between the opposing gap is equal to or greater than a predetermined value;
(B) when it is determined that the distance between the opposed gaps is equal to or greater than a predetermined value, the brake pad is braked by the brake pad and energized to the stator winding;
And controlling at least the brake drum by self-heating of the stator winding to control the hoisting machine for an elevator apparatus. A sheave around which a main rope for raising and lowering a car is wound, a rotor that rotationally drives the sheave, a brake drum that rotates together with the rotor, a stator that is disposed to face the rotor, and the fixing An elevator used in a hoisting machine comprising a stator winding wound around a child, a brake pad for applying a braking force to the brake drum, and an electromagnetic coil for driving a movable iron core connected to the brake pad. In the control device of the machine hoisting machine,
The controller is
(A) determining whether the call-free time of the car has passed a predetermined set time;
(B) when it is determined that the callless time is equal to or longer than a set time, a distance between the brake pad and the opposing gap of the brake drum is obtained, and it is determined whether the distance of the opposing gap is equal to or greater than a predetermined value; ,
(C) when it is determined that the distance between the opposed gaps is equal to or greater than a predetermined value, the brake pad is braked by the brake pad and energized to the stator winding;
And controlling at least the brake drum by self-heating of the stator winding to control the hoisting machine for an elevator apparatus. A car that includes a pulley that passes through the hoistway, one end of which is fixed to the hoistway, and a pulley that passes the main rope that is fixed to the hoistway. A counterweight that moves up and down, a rotor that rotationally drives a sheave around which the main rope is wound between the counterweight and the car, a stator that is disposed to face the rotor, and the stator A hoisting machine provided with an electric motor composed of a stator winding wound around and an electromagnetic brake device having a brake pad for braking a brake drum formed on the rotor, and at least the electric motor and the electromagnetic brake device In an elevator apparatus existing in a building having a control device composed of a CPU (arithmetic unit), an input / output circuit, a rewritable storage device, and the like,
A program rewriting device is connected to a rewriting terminal provided in the control device, and (a) a distance between the brake pad and the opposing gap portion of the brake drum is obtained from the program changing device, and the distance between the opposing gap portions is determined in advance. (B) When the distance between the opposed gaps is determined to be greater than or equal to a predetermined value, the brake pad is braked by the brake pad and the stator winding is A warm-up program having a function of energizing is transferred to the rewritable storage device, and the brake drum is braked by the brake pad upon activation of the transferred warm-up program, and the stator winding is energized. That at least the brake drum can be warmed by self-heating of the stator winding. Renovation method of the control device of the elevator installation hoist to symptoms. A car that includes a pulley that passes through the hoistway, one end of which is fixed to the hoistway, and a pulley that passes the main rope that is fixed to the hoistway. A counterweight that moves up and down, a rotor that rotationally drives a sheave around which the main rope is wound between the counterweight and the car, a stator that is disposed to face the rotor, and the stator A hoisting machine provided with an electric motor composed of a stator winding wound around and an electromagnetic brake device having a brake pad for braking a brake drum formed on the rotor, and at least the electric motor and the electromagnetic brake device In an elevator apparatus existing in a building having a control device composed of a CPU (arithmetic unit), an input / output circuit, a rewritable storage device, and the like,
A program rewriting device is connected to a rewriting terminal provided in the control device, and (a) a function for judging whether or not a no-call time of the car has passed a predetermined set time from the program rewriting device; b) When it is determined that the callless time is equal to or longer than a set time, a function of determining a distance between the opposing gap of the brake pad and the brake drum and determining whether the distance of the opposing gap is equal to or greater than a predetermined value; (C) When the distance between the opposed gaps is determined to be greater than or equal to a predetermined value, the warm-up program having the function of braking the brake drum by the brake pad and energizing the stator winding can be rewritten. The brake drum is braked by the brake pad upon activation of the transferred warm-up program. Together with, at least the repair method of the control device of the elevator installation hoist, characterized in that to be able to warm the brake drum by self-heating of energizing the stator windings in the stator windings.

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