CN102378731B - Elevator device - Google Patents

Elevator device Download PDF

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Publication number
CN102378731B
CN102378731B CN200980158454.9A CN200980158454A CN102378731B CN 102378731 B CN102378731 B CN 102378731B CN 200980158454 A CN200980158454 A CN 200980158454A CN 102378731 B CN102378731 B CN 102378731B
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CN
China
Prior art keywords
braking force
control system
force control
brake
car
Prior art date
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Expired - Fee Related
Application number
CN200980158454.9A
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Chinese (zh)
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CN102378731A (en
Inventor
丸藻秀昭
柴田益诚
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication of CN102378731A publication Critical patent/CN102378731A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00Control systems of elevators in general
    • B66B1/24Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/32Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Regulating Braking Force (AREA)
  • Elevator Control (AREA)

Abstract

In an elevator device, an operation control device controls operation of the car. The operation control device also generates actuation command signals for activating a braking device. A brake control device controls the brake device according to actuation command signals from the operation control device. When a malfunction of the brake control device is detected, control by the brake control device is invalidated and the brake device is operated directly by means of actuation command signals.

Description

Lift appliance
Technical field
The present invention relates to lift appliance, it has the braking force control system of the braking force that can control brake equipment.
Background technology
In lift appliance in the past, in the situation that fault detected by the OBD (On-Board Diagnostics) of braking force control system, the energising of the adaptor union of restraining coil is cut off at once, car is by emergent stopping (for example,, with reference to patent documentation 1).
The prior art document
Patent documentation
Patent documentation 1:WO2007/060733A1
Summary of the invention
The problem that invention will solve
In above-mentioned lift appliance in the past, when the fault of braking force control system being detected, car is by emergent stopping, thereby likely the passenger closed in car, exists at every turn the personnel of needing repairing to carry out the problem of rescue work.
The present invention proposes in order to address the above problem, and its purpose is to provide a kind of lift appliance, even also can carry out the braking of brake equipment/releasing during the braking force control system et out of order, can prevent that the passenger from being closed in car.
For solving the means of problem
Lift appliance of the present invention has: car; Brake equipment, it is braked advancing of car; Control device for running the engine, it produces the action command signal for brake equipment is moved, and controls the operation of car; And braking force control system, it controls the braking force of brake equipment according to the action command signal, and when the fault of braking force control system being detected, the control that braking force control system is carried out is invalid, utilizes the action command signal directly to make brake equipment be moved.
The invention effect
Lift appliance of the present invention is when the fault of braking force control system being detected, the action command signal that is used to the self-operating control setup is moved brake equipment, even thereby also can carry out the braking of brake equipment/releasing during the braking force control system et out of order, can prevent that the passenger from being closed in car.
The accompanying drawing explanation
Fig. 1 means the constructional drawing of the lift appliance of embodiments of the present invention 1.
Fig. 2 means the block diagram of the main portion of the lift appliance shown in Fig. 1.
Fig. 3 means the diagram of circuit of the deceleration/decel control action of the braking force control system shown in Fig. 1.
Fig. 4 means the diagram of circuit of the abnormity diagnosis action of the braking force control system shown in Fig. 1.
Fig. 5 means the 1st and the 2nd threshold value of the car deceleration/decel that the braking force control system shown in Fig. 1 is set and the diagram of curves of the relation between car position.
Fig. 6 means the block diagram of the signal switching part shown in Fig. 2.
Fig. 7 means the diagram of curves of an example of the braking current command signal that the output control logic circuit part shown in Fig. 6 generates.
The specific embodiment
Below, illustrate referring to the drawings for implementing mode of the present invention.
Embodiment 1
Fig. 1 means the constructional drawing of the lift appliance of embodiments of the present invention 1.In the drawings, car 1 and counterweight 2 are suspended in hoistway by the main rope 3 as suspension unit, by propulsive effort lifting in hoistway of towing machine 4.
Towing machine 4 has the driving rope sheave 5 hung main rope 3 of reeling, makes to drive the towing machine motor 6 of rope sheave 5 rotations and the brake equipment 7 that the rotation that drives rope sheave 5 is braked.Brake equipment 7 has: brake wheel (brake drum) (brake wheel) 8, and it coaxially engages with driving rope sheave 5; Brake shoe 9, it contacts/separates with brake wheel 8; Retarding spring, its by brake shoe 9 by being pressed on brake wheel 8 and apply braking force; And electromagnet, its spring force that makes brake shoe 9 overcome retarding spring leaves brake wheel 8, and brake off power.That is, as brake equipment 7, adopt magnet stopper.
Be provided with the towing machine coder 10 as the 1st speed test section at towing machine motor 6, for generation of the rotative speed of the S. A. with towing machine motor 6, drive the signal corresponding to rotative speed of rope sheave 5.Towing machine coder 10 produces the independently detection signal of two systems.
Be provided with top hoistway switch 11 near the upper end floor of hoistway.Be provided with bottom hoistway switch 12 near the lower end floor of hoistway.Hoistway switch 11,12 is used as detecting the absolute location of car 1 and the location correction switch of revising car position information.At car 1, be provided with for operating the operation of cam 13 of hoistway switch 11,12.
Be provided with car buffer 14 and counterweight buffer 15 in the bottom of hoistway (pit).Car buffer 14 be configured in car 1 under.Counterweight buffer 15 be configured in counterweight 2 under.
Be provided with governor sheave 16 on the top of hoistway.Be provided with tension wheel 17 in the bottom of hoistway.The overspeed governor (overspeed detection rope) 18 of reeling on governor sheave 16 and tension wheel 17.The both ends of overspeed governor 18 are connected with car 1.Overspeed governor 18 circulates along with the lifting of car 1.Thus, corresponding speed is rotated with the gait of march with car 1 for governor sheave 16 and tension wheel 17.
Be provided with the velocity limiter coder 19 as the 2nd speed test section at governor sheave 16, this velocity limiter coder 19 for generation of the rotative speed with governor sheave 16, be the signal corresponding to speed of car 1.Velocity limiter coder 19 produces the independently detection signal of two systems.
Brake equipment 7 is controlled by braking force control system 20.Signal from towing machine coder 10, hoistway switch 11,12 and velocity limiter coder 19, be imported into braking force control system 20.And the signal corresponding with the electric current of the electromagnet of brake equipment 7 is imported into braking force control system 20.
Braking force control system 20, according to from the signal of towing machine coder 10 and the current signal of electromagnet (braking current value), is controlled the braking force of brake equipment 7.And, when making car 1 emergent stopping, braking force control system 20 is controlled the braking force of brake equipment 7, so that the deceleration/decel of car 1 can be not excessive.
The operation of car 1 is controlled by control device for running the engine 21.That is, control device for running the engine 21 is controlled towing machine motor 6 and braking force control system 20.Control device for running the engine 21 has operation control microcomputer.Braking force control system 20 has braking control microcomputer.
Braking force control system 20 has dual operational part, i.e. the 1st and the 2nd operational part, can be according to the fault that relatively detects self of operation result.
Fig. 2 means the block diagram of the main portion of the lift appliance shown in Fig. 1.Electromagnet at brake equipment 7 is provided with restraining coil (magnet coil) 22.Make electric current flow through this restraining coil 22, electromagnet, by excitation, produce the electromagnetic force for the braking force of brake off device 7, thereby brake shoe 9 leaves brake wheel 8 thus.And, by cutting off the energising to restraining coil 22, the excitation of electromagnet is disengaged, brake shoe 9 is pressed against on brake wheel 8 by the spring force of retarding spring.In addition, flow through the current value of restraining coil 22 by control, can control the braking force of brake equipment 7.
Restraining coil 22 is connected with supply unit 24 by restraining coil adaptor union 23.And restraining coil adaptor union 23 is connected with supply unit 24 by safety circuit switch group 25.Safety circuit switch group 25 comprises a plurality of safety switchs that are connected in series.When at least one safety switch in these safety switchs is disconnected, the energising of restraining coil adaptor union 23 is cut off, the energising of restraining coil 22 also is cut off.
Control device for running the engine 21 has the braking maneuver instruction generating unit 21a that produces the action command signal for brake equipment 7 is moved.The action command signal comprises that the on/off for the energising to restraining coil adaptor union 23 provides the adaptor union command signal Sc1 of instruction and provides the brake command signal Sb1 of instruction for the on/off (attraction of brake shoe 9/fall) of the energising to restraining coil 22.
Be provided with signal switching part 26 between control device for running the engine 21 and braking force control system 20 and brake equipment 7.Signal switching part 26 is connected with braking force control system 20 with control device for running the engine 21.When braking force control system 20 detects the fault of self, the 26 output fault detection signal Sabn from braking force control system 20 to the signal switching part.
Braking force control system 20 is according to adaptor union command signal Sc1, and the on/off generated for the energising to restraining coil adaptor union 23 provides the adaptor union command signal Sc2 of instruction, and exports to signal switching part 26.And braking force control system 20, according to brake command signal Sb1, generates for controlling the brake control signal Sb2 of the voltage that imposes on restraining coil 22, and exports to signal switching part 26.
Signal switching part 26 produces the brake control signal Sb3 that on/off for the energising to restraining coil adaptor union 23 provides the adaptor union command signal Sc3 of instruction and imposes on the voltage of restraining coil 22 for control.
In the normal situation of braking force control system 20, not in the situation of input fault detection signal Sabn, adaptor union command signal Sc3 is exactly adaptor union command signal Sc2, and brake control signal Sb3 is exactly brake control signal Sb2.
On the other hand, in the situation that the fault of braking force control system 20 detected, inputted in the situation of fault detection signal Sabn, it is invalid that signal switching part 26 makes from the adaptor union command signal Sc2 of braking force control system 20 and brake control signal Sb2, according to the adaptor union command signal Sc1 from control device for running the engine 21 and brake command signal Sb1, the energising of control to restraining coil adaptor union 23, and the voltage of control restraining coil 22.
Like this, whether signal switching part 26 bases detect fault at braking force control system 20, the invalidating of the control that switching braking force control system 20 carries out.And, when the fault of braking force control system 20 being detected, the control that signal switching part 26 carries out braking force control system 20 is invalid, utilize the action command signal generated by control device for running the engine 21 directly to make brake equipment 7 be moved.
Fig. 3 means the diagram of circuit of the deceleration/decel control action of the braking force control system 20 shown in Fig. 1, the executed in parallel processing as shown in Figure 3 simultaneously of the 1st and the 2nd operational part of braking force control system 20.In Fig. 3, at first braking force control system 20 is carried out initial setting (step S1) to processing needed a plurality of parameter.In this example, set following parameter: the car speed of using (driving rope sheave speed) V0[m/s in car stops judging], make deceleration/decel control the car speed V1[m/s stopped], the threshold value I0[A of the current value of restraining coil 22] and the 1st and the 2nd threshold gamma 1[m/s of car deceleration/decel 2], γ 2[m/s 2] (γ 1<γ 2).
Periodically carry out repeatedly the processing after initial setting according to the predefined sampling period.That is, braking force control system 20 is taken into the signal (step S2) from towing machine coder 10 groups such as sensor such as grade with the cycle of being scheduled to.Then, according to the signal from towing machine coder 10, computing car speed V[m/s], car deceleration/decel γ 1[m/s 2] (step S3).
Then, judge that car 1 is whether in the emergent stopping action (step S4).Specifically, in car speed (motor rotative speed), be greater than and stop judging that speed V0 and braking current value are less than while stopping judging current value 10, braking force control system 20 is judged to be car 1 and is in the emergent stopping action.If, not in the emergent stopping action, do not implement deceleration/decel and control (step S10).
If, in the emergent stopping action, judge whether car deceleration/decel γ is greater than the 1st threshold gamma 1 (step S5).And, if γ≤γ 1 does not implement deceleration/decel and controls (step S10).And if, γ>γ 1, degree of reducing speed now is controlled (step S6).
At this, when the emergent stopping of car 1, energising to towing machine motor 6 also is cut off, thereby from produce the emergent stopping instruction play the braking force practical function during, due to the overbalance of the load of the load of car 1 side and counterweight 2, the situation that exists the accelerated situation of car 1 and car 1 to be slowed down.
If γ≤γ 1, braking force control system 20 is judged to be car 1 after producing the emergent stopping instruction and is accelerated immediately, thereby does not implement deceleration/decel and control, but applies maximum braking force, so that braking force plays a role as early as possible at once.And if, γ>γ 1, braking force control system 20 is judged to be car 1 and is slowed down, and implement deceleration/decel, control so that deceleration/decel can be not excessive.
In deceleration/decel is controlled, braking force control system 20 judges whether car deceleration/decel γ is greater than the 2nd threshold gamma 2 (step S7).And, if γ>γ 2 for example, makes deceleration/decel master cock (not shown) on/off with predefined duty cycle of switching (50%), in order to suppress car deceleration/decel γ (step S8).Thus, restraining coil 22 is applied in predetermined voltage, and controls the braking force of brake equipment 7.
And, if γ≤γ 2, the state that keeps the deceleration/decel master cock to disconnect.Then, braking force control system 20 is controlled and is stopped judging (step S9).In control stops judging, judge whether car speed V is less than threshold value V1.And, if V >=V1 directly turns back to input processing (step S2).And if, V<V1, end minus speed is controlled (step S10), turns back to input processing (step S2).
Below, Fig. 4 means the diagram of circuit of the abnormity diagnosis action of the braking force control system 20 shown in Fig. 1.The moment that each later processing of the input processing (step S2) of the 1st and the 2nd operational part in Fig. 3 of braking force control system 20 finishes, the diagnostic process shown in calling graph 4.
In abnormity diagnosis action, judge from the input value of sensor and/or the 1st and the matching (step S11) of the operation values of the 2nd operational part.Specifically, not abnormal if the difference of input value exclusive disjunction value, in predetermined scope, is judged to be, turn back to next processing in Fig. 3.And, in the situation that the difference of input value and/or operation values surpasses preset range, be judged to be extremely, to signal switching part 26 output fault detection signal Sabn (step S12).
Fig. 5 means the 1st and the 2nd threshold value of the car deceleration/decel that the braking force control system 20 shown in Fig. 1 is set and the diagram of curves of the relation between car position.The the 1st and the 2nd operational part to braking force control system 20 is set as follows, and the 1st and the 2nd threshold gamma 1, γ 2 are changed according to car position according to shown in Fig. 5.Specifically, set and to become near make the end floor the 1st and the 2nd threshold gamma 1, γ 2 along with increasing gradually towards the end floor.
Fig. 6 means the block diagram of the signal switching part 26 shown in Fig. 2.Change-over switch section 27 is switched according to fault detection signal Sabn.Change-over switch section in Fig. 6 27 means not detect the state of the fault of braking force control system 20, from the brake control signal Sb2 of braking force control system 20, directly as brake control signal Sb3, is exported.
When the fault of braking force control system 20 being detected, change-over switch section 27 is switched, and the braking current command signal Sb4 generated by output control logic circuit part 28 is used as brake control signal Sb3 output.Output control logic circuit part 28, according to the brake command signal Sb1 from control device for running the engine 21, from the brake switch signal of the brake switch (not shown) of the position of detecting brake shoe 9 and from the signal of PWM generative circuit section 29, generates braking current command signal Sb4.
Fig. 7 means the diagram of curves of the example of the braking current command signal Sb4 that the output control logic circuit part 28 shown in Fig. 6 generates.Output control logic circuit part 28, when receiving the brake command signal Sb1 of the content that means brake off power, exports predetermined current instruction value I1.Then, when brake shoe 9 being detected at moment t1 and leave brake wheel 8, output control logic circuit part 28 makes current instruction value be reduced to I2 (I1>I2).This is because be indexed to and remove the needed attraction voltage in position (attraction position) and compare from braking position (lowering position) with making brake shoe 9, and brake shoe 9 is remained on and removes less the getting final product of the needed attraction voltage in position.
PWM generative circuit section 29 generates the signal of the dutycycle for changing PWM control.The dutycycle of PWM generative circuit section 29 can be changed by operation knob switch etc.That is, operation knob switch etc. presets dutycycle, selects to be suitable for thus the control voltage as the brake equipment 7 of control object.Thus, can utilize public circuit structure to deal with various brake equipments 7.
In this lift appliance, when the fault of braking force control system 20 being detected, the action command signal that is used to self-operating control setup 21 is moved brake equipment 7, even thereby also can carry out the braking of brake equipment 7/releasing during braking force control system 20 et out of order, can prevent that the passenger from being closed in car 1.
In addition, when in the situation that the braking force of brake off device 7 while the fault of braking force control system 20 being detected, restraining coil 22 is applied according to the state of brake shoe 9 (states of regenerative braking boots 9) and predefined attraction voltage, thereby the voltage that imposes on restraining coil 22 can be suppressed to necessary Min., can prevent the scaling loss of restraining coil 22, can realize energy-conservation simultaneously.
In addition, in above-mentioned example, deceleration/decel while utilizing braking force control system 20 to implement emergent stopping is controlled, but the control of 20 pairs of brake equipments 7 of braking force control system is not limited to this mode, such as the control of the motion and sound that also can implement to reduce brake equipment 7 etc.
In addition, in above-mentioned example, utilize braking force control system 20 self to detect the fault of braking force control system 20, but also can utilize control device for running the engine 21 or other monitor unit to be detected.
In addition, in above-mentioned example, at signal switching part 26, output control logic circuit part 28 is set, but is not limited to this mode, for example also can be arranged in control device for running the engine 21.
In addition, also can not adopt with respect to control device for running the engine 21 signal switching part 26 independently, and utilize the output destination of control device for running the engine 21 switching signals.
In addition, also can be in the situation that the fault of braking force control system 20 be detected, to notice faults such as administrative centers, before being overhauled the maintainer/being repaired, the operation of continuation car 1 under the state that braking force control system 20 is disconnected.In addition, also can be in the situation that the fault of braking force control system 20 be detected, after making car 1 move to predefined floor or nearest floor stop, stop the running of lift appliance, until the maintainer is overhauled/repairs under the state that braking force control system 20 is disconnected.
In addition, plural brake equipment 7 also can be set.
In addition, the brake equipment 7 that rotation to driving rope sheave 5 is braked has been shown in above-mentioned example, but brake equipment can be also to control the drg (wire stopper etc.) that suspension unit braked car 1 or be installed on drg (car brake) that being engaged with guiding rail of car 1 braked car 1 etc.
In addition, suspension unit also can be with.
In addition, figure 1 illustrates the lift appliance that the wiring ratio is 1: 1, but the wiring ratio being not limited to this mode, can be also for example that the wiring ratio is 2: 1.
In addition, in above-mentioned example, utilize 1 towing machine 4 to make car 1 lifting, but can be also the lift appliance that adopts many towing machines.

Claims (3)

1. a lift appliance, this lift appliance has:
Car;
Brake equipment, it is braked advancing of described car;
Control device for running the engine, it produces the action command signal for described brake equipment is moved, and controls the operation of described car;
Braking force control system, it controls the braking force of described brake equipment according to described action command signal; And
Be located at the signal switching part between described control device for running the engine and described braking force control system and described brake equipment,
Described signal switching part is according to the fault that described braking force control system whether detected, switches the invalidating of the control that described braking force control system carries out;
When the fault of described braking force control system being detected, the control that described braking force control system is carried out is invalid, utilize described action command signal directly to make described brake equipment be moved, after making described car move to predefined floor or nearest floor stop, stop the running of described lift appliance under the state that described braking force control system is disconnected.
2. lift appliance according to claim 1, wherein,
Described braking force control system has dual operational part, can be according to the fault that relatively detects self of operation result.
3. lift appliance according to claim 1, wherein,
Described brake equipment has: brake shoe, and it contacts/separates with brake wheel; Retarding spring, its by described brake shoe by being pressed on described brake wheel and apply braking force; And electromagnet, its spring force that makes described brake shoe overcome described retarding spring leaves described brake wheel, and brake off power,
In the situation that remove the braking force of described brake equipment while the fault of described braking force control system being detected, described electromagnet is applied according to the state of described brake shoe and predefined attraction voltage.
CN200980158454.9A 2009-05-27 2009-05-27 Elevator device Expired - Fee Related CN102378731B (en)

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PCT/JP2009/059690 WO2010137134A1 (en) 2009-05-27 2009-05-27 Elevator device

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CN102378731A CN102378731A (en) 2012-03-14
CN102378731B true CN102378731B (en) 2014-01-01

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JP (1) JP5511810B2 (en)
KR (1) KR101246994B1 (en)
CN (1) CN102378731B (en)
WO (1) WO2010137134A1 (en)

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JP6322563B2 (en) * 2014-12-22 2018-05-09 株式会社日立製作所 Elevator control device and elevator control method
EP3309104B1 (en) * 2016-10-14 2019-10-09 KONE Corporation Method for avoiding unwanted safety gear tripping in an elevator system, controller adapted to perform such a method, governor brake and elevator system each having such a controller
DE112019007500T5 (en) * 2019-06-25 2022-08-11 Mitsubishi Electric Corporation ELEVATOR EQUIPMENT

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KR20110108410A (en) 2011-10-05
WO2010137134A1 (en) 2010-12-02
JP5511810B2 (en) 2014-06-04
EP2436635A1 (en) 2012-04-04
KR101246994B1 (en) 2013-03-25
JPWO2010137134A1 (en) 2012-11-12
CN102378731A (en) 2012-03-14
EP2436635A4 (en) 2015-06-10

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