CN102325712B - Brake device for elevator - Google Patents
Brake device for elevator Download PDFInfo
- Publication number
- CN102325712B CN102325712B CN200980157005.2A CN200980157005A CN102325712B CN 102325712 B CN102325712 B CN 102325712B CN 200980157005 A CN200980157005 A CN 200980157005A CN 102325712 B CN102325712 B CN 102325712B
- Authority
- CN
- China
- Prior art keywords
- braking
- time
- car
- restraining coil
- braking force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/32—Control 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Elevator Control (AREA)
- Braking Arrangements (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
A brake device for an elevator, wherein, even if braking force of an electromagnetic brake changes due to secular changes in pressing force of a spring, the performance of controlling the deceleration of an elevator car in an emergency stop of the elevator car does not lower. A brake device for an elevator is provided with an electromagnetic brake having a brake coil, a brake control device for controlling, in an emergency stop of an elevator car, braking force acting on a driving electric motor, and a brake information acquiring device for detecting, when braking force acting on the elevator car driving electric motor is released during normal operation of the elevator car, a brake release time until the braking force is released. In an emergency stop of the elevator car, the brake control device regulates, on the basis of the brake release time, an electric current to a brake coil to control braking force acting on the elevator car driving electric motor, thereby setting the deceleration of the elevator car in the emergency stop to a predetermined value.
Description
Technical field
The present invention relates to car drive motor to apply the brake equipment of the elevator of braking.
Background technology
The brake equipment of existing elevator possesses: the elevator control gear of controlling the speed of car drive motor; Car drive motor is applied to the magnet stopper that braking makes car drive motor slow down and stop; And the braking force of controlling magnet stopper when receiving the instruction of car emergent stopping is so that the braking force control system that the deceleration/decel of car is predetermined value.
Magnet stopper has: brake shoe, and it presses brake wheel by spring force, and this brake wheel is fixedly linked on driving rope sheave coaxially, and main rope winding drives rope sheave in this; And restraining coil, it produces and makes brake shoe leave the electromagnetic force of brake wheel when energising.And, when emergent stopping instruction, the speed signal of the speed value of braking force control system based on from elevator control gear output and car is adjusted the electric current of restraining coil, thereby control the braking force of magnet stopper, thereby the deceleration/decel of controlling car reaches predetermined value (for example, referring to Patent Document 1).
Like this, in existing elevator, control setup does not make immediately advancing of car stop when emergent stopping instruction, but promptly stops with the deceleration/decel of being scheduled to, thereby avoids user to feel unpleasant and impatience.
Patent documentation 1: Japanese kokai publication hei 7-157211 communique
Summary of the invention
The problem that invention will solve
Yet, in prior art, there is following problem.
In the situation that the braking force of the magnet stopper of the application force of spring that brake shoe is pressed on to brake wheel while because rheological parameters' change with time changes, making the electric current of pre-sizing flow through restraining coil also changes.
Thereby in the brake equipment of existing elevator, because the rheological parameters' change with time of the application force because of spring can cause the change of the braking force of magnet stopper, therefore, when the emergent stopping instruction of car, the controller performance of the deceleration/decel of car when car is stopped reduces.Therefore,, in existing elevator, make sometimes user feel unpleasant and impatience.
The present invention completes in order to solve above-mentioned problem just, its object is to obtain a kind of brake equipment of elevator, even in the situation that because the rheological parameters' change with time of the application force of spring makes the braking force change of magnet stopper, in the time of also can preventing the emergent stopping of car, the controller performance of the deceleration/decel of car reduces.
For solving the means of problem
The brake equipment of elevator of the present invention possesses magnet stopper and braking force control system, and magnet stopper has: brake shoe, this brake shoe is arranged to contact and to leave with brake wheel, brake wheel with the car drive motor of car lifting is linked coaxially, spring, this spring is pressed the application of force to brake shoe to brake wheel, so that car drive motor is applied to braking, and restraining coil, it forms electromagnet, this electromagnet generation overcomes the application force of spring and makes brake shoe leave the electromagnetic force of brake wheel, about braking force control system, in car normal operation process, when the braking force of removing car drive motor, braking force control system is so that size removes for the braking of I0 the mode that electric current flows through restraining coil powers, so that brake shoe leaves brake wheel, and when car emergent stopping, braking force control system is adjusted the electric current of restraining coil, control the braking force that puts on car drive motor, so that the deceleration/decel of car is predetermined value, the brake equipment of elevator is characterised in that, the brake equipment of this elevator possesses braking information acquisition device, when the braking force of removing car drive motor, this braking information acquisition device detects from supply with braking releasing electric current to restraining coil and plays the braking releasing time till the braking force of car drive motor is disengaged, when car emergent stopping, during the normal operation of braking force control system based on car, the time is removed in detected braking, adjust the electric current of restraining coil, to control the braking force that puts on car drive motor, thereby the deceleration/decel of the car while making car emergent stopping is predetermined value.
Invention effect
According to the brake equipment of the elevator the present invention relates to, in the normal operation process of car, car information is obtained the variation that unit inspection goes out to brake the releasing time, the change of the braking force that the variation of this braking releasing time and application force by the spring of magnet stopper causes changes in linkage, and braking force control system is adjusted the electric current of restraining coil to control the braking force that puts on car drive motor, so that the deceleration/decel of car is predetermined value based on the braking releasing time.Thus, even if the application force of spring changes because of rheological parameters' change with time, the reduction of the controller performance of the deceleration/decel of the car in the time of also can preventing car emergent stopping.
Accompanying drawing explanation
Fig. 1 means the integral structure figure of the elevator with brake equipment that embodiments of the present invention 1 relate to.
Fig. 2 means the constructional drawing of the brake equipment of the elevator that embodiments of the present invention 1 relate to.
Fig. 3 is the figure that the brake equipment of the elevator that relates to of explanation embodiments of the present invention 1 detects build up time and the action of braking releasing time.
Fig. 4 means the integral structure figure of the elevator with brake equipment that embodiments of the present invention 2 relate to.
Fig. 5 means the constructional drawing of the brake equipment of the elevator that embodiments of the present invention 2 relate to.
Fig. 6 is the figure that the brake equipment of the elevator that relates to of explanation embodiments of the present invention 2 detects the action of braking releasing time, and this Fig. 6 and Fig. 3 are suitable.
Fig. 7 is the figure that the brake equipment of the elevator that relates to of explanation embodiments of the present invention 2 detects the additive method of build up time.
The specific embodiment
Below, use accompanying drawing explanation to be used for implementing best mode of the present invention.
Embodiment 1
Fig. 1 means the integral structure figure of the elevator with brake equipment that embodiments of the present invention 1 relate to, and Fig. 2 means the constructional drawing of the brake equipment of the elevator that embodiments of the present invention 1 relate to.
In Fig. 1 and Fig. 2, elevator 1 possesses: car drive motor 10; Drive the actuating device 20 of car drive motor 10; Drive rope sheave and brake wheel 12; Main rope 13; Car 15; Counterweight 16; Elevator control gear 30; And brake equipment 50A.
Drive rope sheave 11 and brake wheel 12 with the rotating gang of the output shaft 10a with car drive motor 10 the mode that is rotated be arranged at coaxially output shaft 10a.
Main rope 13 is wound in and drives rope sheave 11.And car 15 links with one end of main rope 13, counterweight 16 links with the other end of main rope 13.
Elevator control gear 30 possesses Operations Analysis 30a, and this Operations Analysis 30a has: as the RAM (random access memory) (not shown) of memory cell; Store the ROM (read-only memory (ROM)) (not shown) of various control programs; And carry out computing based on control program and CPU (central processing unit) (not shown) of control etc.
In addition, actuating device 20 is recorded in Japanese kokai publication hei 7-157211 communique etc., therefore at this, does not record in detail, and it has conv (inverter) device etc. that drives car drive motor 10.
Drive rope sheave 11 and the driving of car drive motor 10 to be rotated in linkage, car 15 lifting in hoistway (not shown) thus.And elevator control gear 30 connects in mode that can accessory drive 20.When the normal operation of car 15, elevator control gear 30 can be by controlling the torque of car drive motor 10, so that car speed reaches the speed of expection to the control of actuating device 20.
In addition, the normal operation of car 15 refers to that car 15 carries out lifting running according to calling.
In addition, actuating device 20 and car drive motor 10 are driven by source power supply 19.
Brake equipment 50A possesses: coder 51; Weight tester 52 in car; Magnet stopper 60; Braking force control system 70; Braking information acquisition device 80; And supply unit 90.In addition, elevator control gear 30 has the part of functions of brake equipment 50A concurrently.
Supply unit 90 has voltage transitions portion 91 and battery 92.Voltage transitions portion 91 is the voltage for being used by brake equipment 50A by the voltage transitions of the interchange of being supplied with by source power supply 19.And the voltage after conversion is fed into brake equipment 50A.
In addition, in the situation that occurring to have a power failure, replace the voltage of source power supply 19, and to voltage transitions portion 91, supply with the voltage of battery 92.And voltage transitions portion 91 is the voltage for being used by brake equipment 50A by the voltage transitions of battery 92.And the voltage after conversion is fed into brake equipment 50A.
In addition, coder 51 is connected with elevator control gear 30 with weight tester 52 in car.The coder 51 output impulse singla corresponding with the rotative speed of car drive motor 10.And elevator control gear 30 calculates car speed according to the impulse singla of coder 51 outputs.And elevator control gear 30 can be identified the weight in car 15 according to the detection signal of the weight in the car 15 by 52 outputs of weight tester in car.
And elevator control gear 30 is the weight based in car speed and car 15 when having inputted the emergent stopping instruction of car 15, thereby set, make car 15 slow down and make car speed reach 0 velocity mode with the deceleration/decel of being scheduled to.
In addition, about emergent stopping instruction, for example in the running of elevator 1, make for some reason the power cut detection device of source power supply 19 power failure be detected, or during the work of the detecting device of the safety device work such as velocity limiter (not shown) or earthquake, by each device, send emergent stopping instruction.
In addition, in elevator 1, be configured to: when sending emergent stopping instruction, cut off the power supply to car drive motor 10.
Magnet stopper 60 possesses brake shoe 65, spring 63 and has the electromagnet 61 of restraining coil 62.
Spring 63 is for example coil spring, and brake shoe 65 is located at one end of spring 63.Spring 63 is supported in and brake shoe 65 is pressed to the position of the application of force to brake wheel 12, and the friction force by brake shoe 65 with brake wheel 12 produces the braking force to car drive motor 10.
And electromagnet 61 produces electromagnetic force, the direction that this electromagnetic force makes brake shoe 65 leave from brake wheel 12 in the application force that overcomes spring 63 when to restraining coil 62 power supply.
Now, the electromagnetic force that electromagnet 61 produces changes according to the current value that flows through restraining coil 62.
Braking information acquisition device 80 possesses current detecting unit 81, detector switch 82 and braking information arithmetical device 83 are removed in braking.
Current detecting unit 81 is connected with restraining coil 62 and detects the electric current that flows through restraining coil 62.When brake shoe 65 has left brake wheel 12,82 pairs of outputs of braking releasing detector switch are switched.That is, braking is removed the discharged state of braking force that 82 pairs of detector switches put on car drive motor 10 and is detected.
In addition, braking information arithmetical device 83 is connected with elevator control gear 30, and current detecting unit 81 is connected with braking information arithmetical device 83 with braking releasing detector switch 82.In the normal operation process of car 15, when car 15 starts to travel, in other words, when releasing puts on the braking force of car drive motor 10, braking information arithmetical device 83 is based on remove the signal of detector switch 82 and elevator control gear 30 inputs from current detecting unit 81, braking, come computing build up time and braking releasing time, detailed content will be narrated in the back.
Braking force control system 70 possesses adder 71, coil current configuration part 72 and coil current control part 73.
71 pairs of adders are carried out computing from the car speed of elevator control gear 30 inputs and the difference of the speed value based on velocity mode.
Coil current configuration part 72 has the Operations Analysis 72a that structure is identical with Operations Analysis 30a.Output based on adder 71, the build up time of inputting from braking information arithmetical device 83 and braking releasing time, set the big or small current instruction value that specified flow is crossed the electric current of restraining coil 62.
In addition, coil current control part 73 possesses: the Operations Analysis 73a that structure is identical with Operations Analysis 30a; Be configured to the coil current control circuit 73b that can change the electric current that flows to restraining coil 62.
And when car 15 normal operation, the coil current command value of coil current control part 73 based on from elevator control gear 30 inputs, controls the electric current that flows through restraining coil 62, and car drive motor 10 is applied to braking, or brake off.
In addition, when the emergent stopping instruction of car 15 is sent, the coil current command value of coil current control part 73 based on 72 inputs from coil current configuration part, controls the electric current that flows through restraining coil 62, controls and puts on braking force car drive motor 10, magnet stopper 60.
The action of the brake equipment 50A forming as described above then, is described.
Fig. 3 is the figure that the brake equipment of the elevator that relates to of explanation embodiments of the present invention 1 detects build up time and the action of braking releasing time.
Figure 3 illustrates: while making car 15 start to travel in the normal operation process of car 15 the coil current command value of elevator control gear 30 output over time, the current value of the restraining coil 62 controlled by coil current control part 73 based on coil current command value over time and braking remove detector switch 82 output over time.
The action of brake equipment 50A during first, to normal operation describes.
Elevator control gear 30 is when making car 15 rest against predetermined floor, the power supply of cut-out to car drive motor 10, and export for cutting off the coil current command value of the electric current of restraining coil 62 to coil current control part 73 and braking information arithmetical device 83.Coil current control part 73 cuts off the electric current of restraining coil 62, so that car drive motor 10 is applied to braking, thereby limits reliably the movement of car 15.
Then, elevator control gear 30, when making car 15 start to travel to destination layer, is exported according to the coil current command value of the patterns of change shown in Fig. 3 to coil current control part 73.The pattern of coil current command value forms by checking mode with the continuous braking releasing pattern of checking mode.
Checking mode is for making coil current control part 73 carry out such control: at the inspection electric current that makes predetermined peak value I1, flow through after restraining coil 62, cut off the power supply to restraining coil 62.And, the peak I of checking mode 1 is set for: even when the electric current of the restraining coil 62 correspondingly flowing through with checking mode reaches peak I 1, brake shoe 65 can not leave brake wheel 12 yet.
The braking sending after checking mode is removed pattern for making coil current control part 73 carry out such control: the braking that the size that makes enough releasings put on car drive motor 10 is I0 is removed electric current and flow through restraining coil 62 until car 15 rests against destination layer.In addition, while applying predetermined voltage to restraining coil 62, leaving brake wheel 12 correspondingly with brake shoe 65 in order to make braking based on braking releasing pattern remove that electric current flows through restraining coil 62, at restraining coil 62, produce inverse electromotive forces.Thus, braking is removed electric current and is temporarily declined before reaching big or small I0, and then rises and arrive big or small I0.
Coil current control part 73 is when making to check that electric current flows through restraining coil 62, and the electric current that actual flow is crossed restraining coil 62 as shown in Figure 3, needs the time from checking till the power supply of electric current starts to reach peak level.Now, about till flow through the time that the electric current of restraining coil 62 reaches peak I 1, the ambient temperature of magnet stopper 60 rises and makes the resistance value of restraining coil 62 higher, and this time can more postpone.
In addition, the coil current command value of elevator control gear 30 outputs and the output of current detecting unit 81 are transfused to braking information arithmetical device 83.At this, the checking mode of establishing coil current command value is imported into time of braking information arithmetical device 83, in other words, starts to supply with and check that the time of electric currents is t1 to restraining coil 62.In addition, establishing from start to reach as predefined rise detection to restraining coil 62 supply inspection electric currents is t2 with the time till the first threshold α I1 (wherein, α < 1) of threshold value.Braking information arithmetical device 83 generates Ta=t2-t1 as build up time.
In addition, establishing the time starting to restraining coil 62 supply braking releasing electric currents is t3.And the output of removing detector switch 82 in time t4 braking is switched.In other words, braking is removed detector switch 82 and has been detected at time t4 the state that the braking force of car drive motor 10 is disengaged that puts on.
Braking information arithmetical device 83 is removed temporal calculation out using Tb=t4-t3 as braking.
And braking information arithmetical device 83 is exported to braking force control system 70 by build up time Ta and braking releasing time T b.
In the coil current configuration part 72 of braking force control system 70, when build up time Ta is transfused to braking releasing time T b, build up time Ta and braking releasing time T b are upgraded and stored.
Then, to elevator 1, occurred to make the action of the brake equipment 50A in some abnormal situations of car 15 emergent stoppings to describe.
When extremely exporting emergent stopping instruction because of some, the power supply that puts on car drive motor 10 is automatically cut off.And car speed when elevator control gear 30 is abnormal based on generation and the weight in car 15, set the velocity mode for car 15 is slowed down with the speed of being scheduled to.And elevator control gear 30 sends current car speed and the speed value based on velocity mode to the adder 71 of braking force control system 70.
In adder 71, the difference of computation speed command value and car speed value, the difference value of speed value and car speed value is imported into coil current configuration part 72.In coil current configuration part 72, the difference value based on speed value and car speed value, build up time Ta and braking are removed time T b and are set as follows coil current command value.
At this, the initial condition using following state as magnet stopper 60: when the ambient temperature of magnet stopper 60 electric current that is fiducial temperature Tm and restraining coil 62 is cut off, spring 63 is pressed brake shoe 65 with the directed force F of being scheduled to.In addition,, in the situation that carry out the emergent stopping of car 15, braking force control system 70 for example makes periodic pulse current flow through the braking force that restraining coil 62 is controlled magnet stopper 60.And, when magnet stopper 60 is in initial condition time, when the electric current of restraining coil 62 is controlled in the coil current instruction based on being set to reference current command value Ia, the braking force of the magnet stopper 60 that car 15 slows down with the deceleration/decel be scheduled to is brought into play.
The electric current of the restraining coil 62 of below, magnet stopper 60 being controlled based on reference current command value Ia when the initial condition is as reference current Ib.
In addition, in the situation that the electric current of magnet stopper 60 in initial condition, restraining coil 62 is cut off, brake shoe 65 is pressed brake wheel 12 with the directed force F of being scheduled to, the time of removing of the braking when braking that is I0 using size releasing electric current flows through restraining coil 62 is removed time T 2 as benchmark braking.And the build up time of the restraining coil 62 using magnet stopper 60 when the initial condition is as benchmark build up time T1.
And 72 pairs of coil current configuration parts build up time Ta and benchmark build up time T1 compare.
In the time of build up time Ta > benchmark build up time T1, the size of current (aviation value) while controlling the electric current of restraining coil 62 based on reference current command value Ia is less than the size of reference current Ib.
In addition,, in the time of build up time Ta < benchmark build up time T1, the size of current while controlling the electric current of restraining coil 62 based on reference current command value Ia is greater than the size of reference current Ib.
In addition, make the ambient temperature change of magnet stopper 60, and for each ambient temperature changing, measure build up time while checking that electric current flows through restraining coil 62 and the data of restraining coil 62 in advance.The data of the characteristic of the electric current of the restraining coil 62 corresponding with build up time are stored in coil current configuration part 72.And, coil current configuration part 72 is in any one situation of build up time Ta > benchmark build up time T1 and build up time Ta < benchmark build up time T1, all according to build up time Ta, infer that according to the current characteristics of the restraining coil 62 corresponding with build up time actual flow under current state crosses the size of the electric current I c of restraining coil 62.And the value that coil current configuration part 72 deducts the big or small gained of electric current I c using the size of reference current Ib is stored as correction Ie1.
In addition,, the in the situation that of build up time Ta=benchmark build up time T1, coil current configuration part 72 is made as 0 by correction Ie1.
At this, the change that the application force of time T b and spring 63 is removed in braking changes in linkage, and changes in linkage with the change of the ambient temperature of magnet stopper 60.
The variation td that the change of the ambient temperature because of magnet stopper 60 of now braking releasing time T b causes is roughly proportional with (build up time Ta-benchmark build up time T1) * I0/I1/ α.
And coil current configuration part 72 is using Tc=Tb-td as inferring braking releasing temporal calculation out.
Infer that it is the value predicting while measuring braking releasing time T b using the ambient temperature of the magnet stopper of current state 60 as fiducial temperature Tm that time T c is removed in braking.
Then, coil current configuration part 72 relatively infers that time T c is removed in braking and time T 2 is removed in benchmark braking.
In the situation that inferring that braking is removed the braking of time T c > benchmark and removed time T 2, when the electric current of restraining coil 62 is cut off, brake shoe 65 is pressed brake wheel 12 to be greater than the power of directed force F.
In addition, when the ambient temperature of magnet stopper 60 is fiducial temperature Tm, the characteristic of time is removed in braking while measuring in advance the application force variation that makes spring 63, and the characteristic that the time is removed in the braking corresponding with the application force of spring 63 is stored in coil current configuration part 72.
And, 72 pairs of coil current configuration parts in the characteristic of time is removed in braking corresponding to the preserved application force with spring 63, will infer that braking removes the application force that time T c is applied to brake the spring 63 of releasing during the time and store.The application force of the spring 63 of storing is equivalent to the directed force F 1 of current spring 63.
In addition, measure in advance the big or small characteristic of the electromagnetic force of the electromagnet 61 of generation when flowing through the size of electric current of restraining coil 62 of the magnet stopper 60 of initial condition and change, and the big or small characteristic that flows through the electric current of restraining coil 62 and the electromagnetic force of electromagnet 61 is stored in to coil current configuration part 72.The electromagnetic force that results from electromagnet 61 when the restraining coil of the magnet stopper to initial condition 60 62 is supplied with to reference current Ib is made as D1.And, coil current configuration part 72 is according to the big or small characteristic that flows through the electric current of restraining coil 62 and the electromagnetic force of electromagnet 61, infers and makes electromagnet 61 produce the current value I d1 that goes out greatly the required restraining coil 62 of the electromagnetic force of directed force F 1-directed force F than electromagnetic force D1.And the value that coil current configuration part 72 deducts the big or small gained of reference current Ib using current value I d1 is stored as correction Ie2 (> 0).
In addition,, in the situation that inferring that braking is removed the braking of time T c < benchmark and removed time T 2, when the electric current of restraining coil 62 is cut off, brake shoe 65 is pressed brake wheel 12 to be less than the power of the predetermined directed force F of spring 63.
And, in the characteristic of the application force of 72 pairs of coil current configuration parts at the spring 63 of preserving in advance and braking releasing time, will infer that braking removes the application force that time T c is applied to brake the spring 63 of releasing during the time and store.The application force of the spring 63 of storing is equivalent to the directed force F 1 of current spring 63.
And the current value I d2 that makes electromagnet 61 produce the restraining coil 62 more required than the little electromagnetic force that goes out directed force F-directed force F 1 of electromagnetic force D1 is inferred in coil current configuration part 72.And the value that coil current configuration part 72 deducts the big or small gained of reference current Ib using current value I d2 is stored as correction Ie2 (< 0).
In addition,, in the situation that inferring that braking is removed the braking of time T c=benchmark and removed time T 2, coil current configuration part 72 is stored as 0 by correction Ie2.
Next, coil current configuration part 72 is to coil current control part 73 power winding current instruction values, this coil current command value makes the size of reference current Ib and the big or small electric current of correction Ie1 and Ie2 addition gained for flowing through, and coil current control part 73 is controlled the magnitude of current of restraining coil 62 according to the coil current command value of input.
The variation of the ambient temperature of build up time Ta and magnet stopper 60 changes in linkage, and braking is removed time T b and the rheological parameters' change with time of application force of spring 63 and the variation of the ambient temperature of magnet stopper 60 and changed in linkage.By coil current command value is set for: make the correction Ie1 and the Ie2 that flow through the variation based on initial condition of reference current Ib and build up time Ta and braking releasing time T b be added the electric current obtaining, thus, suppressed to be changed by the rheological parameters' change with time of application force of spring 63 and the ambient temperature of magnet stopper 60 change of the braking force of the magnet stopper 63 causing.
That is the predetermined deceleration/decel that, car 15 sets according to elevator control gear 30 slows down and stops.In addition, the deceleration/decel of car 15 need to be set to the value that can not bring impatient sense and can promptly make car 15 stop to user, and it is set to 1m/sec
2left and right.
According to the brake equipment 50A of present embodiment 1, braking force control system 70 flows through make restraining coil 62 when the normal operation of car 15 in for removing the braking of the braking force that puts on car drive motor 10 removes electric current.And, braking force control system 70 is removed before electric current flows through restraining coil 62 braking, the big or small inspection electric current of being scheduled to is flow through after restraining coil 62, the power supply of cut-out to restraining coil 62, the big or small I0 that the size of wherein said inspection electric current is removed electric current than braking is little, and the electromagnetic force that results from magnet stopper 60 can not removed the braking force that puts on car drive motor 10.
And 80 pairs of build up times of braking information acquisition device detect, described build up time is the time till starting to reach first threshold to the size that flows through the electric current of restraining coil 62 to restraining coil 62 supply inspection electric currents.And 80 pairs of braking releasing times of braking information acquisition device are detected, the described braking releasing time is from supply with the time checking till electric current to the braking force that puts on car drive motor 10 is disengaged to restraining coil 62.
In addition, braking force control system 70 detected build up time and braking releasing time during the normal operation based on car 15 when the emergent stopping of car 15, the electric current of adjusting restraining coil 62 to be to control the braking force that puts on car drive motor 10, so that the deceleration/decel of the car 15 during the emergent stopping of car 15 reaches predetermined value.
The variation of the ambient temperature of build up time and magnet stopper 60 changes in linkage, and the rheological parameters' change with time of the application force of braking releasing time and spring 63 changes in linkage.; braking force control system 70 is when the emergent stopping of car 15; the change of the braking force of the magnet stopper 60 that consideration is caused by the rheological parameters' change with time of the variation of the ambient temperature of magnet stopper 60 and the application force of spring 63; adjust the electric current of restraining coil 62, so that the deceleration/decel during emergent stopping of car 15 reaches predetermined value.Thus, even if the ambient temperature of magnet stopper 60 changes, or there is rheological parameters' change with time in the application force of spring 63, and in the time of also can preventing the emergent stopping of car 15, the controller performance of the deceleration/decel of car 15 reduces.
Embodiment 2
Fig. 4 means the integral structure figure of the elevator with brake equipment that embodiments of the present invention 2 relate to, Fig. 5 means the constructional drawing of the brake equipment of the elevator that embodiments of the present invention 2 relate to, Fig. 6 is the figure that the brake equipment of the elevator that relates to of explanation embodiments of the present invention 2 detects the action of braking releasing time, and Fig. 6 and Fig. 3 are suitable.
In addition, in Fig. 4～Fig. 6, also the description thereof will be omitted for the part identical with above-mentioned embodiment 1, to be marked with same numeral.
In Fig. 4 and Fig. 5, except having omitted braking, to remove detector switch 82 with brake equipment 50A be same formation to brake equipment 50B.
The action of brake equipment 50B during next, to normal operation describes.
Figure 6 illustrates: while making car 15 start to travel in the normal operation process of car 15 the coil current command value of elevator control gear 30 output over time, the current value of the restraining coil 62 controlled by coil current control part 73 based on coil current command value over time and the time diffusion value of the electric current of the restraining coil 62 corresponding with braking releasing pattern.
In Fig. 4～Fig. 6, elevator control gear 30 is when making car 15 start to travel to destination layer, to the coil current control part 73 outputs coil current command value same with above-mentioned embodiment 1.
As mentioned above, when coil current control part 73 applies predetermined voltage in order to make braking releasing electric current flow through restraining coil 62 to restraining coil 62, leave correspondingly from brake wheel 12 with brake shoe 65, at restraining coil 62, produce inverse electromotive forces.This is because the spring 63 that is installed on brake shoe 65 shrinks with larger speed in the axial of restraining coil 62.Thus, as shown in Figure 6, when the braking force of magnet stopper 60 is disengaged, the electric current that flows through restraining coil 62 occurs in so special variation of again rising after temporary transient decline.
At this, measured in advance when the characteristic of time diffusion value that flows through the electric current of restraining coil 62 and flow through the electric current of restraining coil 62 when restraining coil 62 is supplied with the voltage based on coil current command value.And, in braking information arithmetical device 83, the slightly large value (< 0) of time diffusion value that flows through the electric current of restraining coil 62 is saved as to decline to detecting use a reference value K than the time place when electric current decline is maximum.
At this, as mentioned above, based on braking releasing pattern start to the time of the power supply of restraining coil 62 be t3.And 83 computings of braking information arithmetical device are flow through the time diffusion of the electric current of restraining coil 62 accordingly with braking releasing pattern, and detect the time t5 when reaching operation result and being less than 0 predetermined decline and detecting with a reference value K.In addition, time t5 is regarded as to the approximate time that the braking force of magnet stopper 60 is disengaged.
Braking information arithmetical device 83 detects Tb=t5-t3 as the braking releasing time.
The action of other brake equipment is identical with brake equipment 50A.
According to this embodiment 2, braking information acquisition device 80 detects the following times and removes time T b as braking: from supply with braking to restraining coil 62, remove electric currents to the time till the variation of current value of restraining coil 62 being detected, the variation of the current value of wherein said restraining coil 62 is corresponding at the inverse electromotive force of restraining coil 62 generations with put on the braking force of car drive motor 10 by releasing.
And, the braking force control system 70 of brake equipment 50B is the same with the braking force control system 70 of brake equipment 50A, when the emergent stopping of car 15, include the detection output of braking information acquisition device 80 in consideration, adjust the electric current of restraining coil 62 so that deceleration/decel during emergent stopping reaches predetermined value.
Therefore, can access the effect identical with above-mentioned embodiment 1.
And, detect with by put on car drive motor 10 braking force releasing and in the variation of the current value of restraining coil 62 corresponding to the inverse electromotive force of restraining coil 62 generations, can detect thus braking and remove time T b, therefore can omit braking and remove detector switch 82.That is, can reduce the component costs of brake equipment 50B.
In addition, in the respective embodiments described above, such situation has been described: when the normal operation of car 15, brake equipment 50A, 50B detect build up time Ta and time T b both sides are removed in braking, when the emergent stopping of car 15, brake equipment 50A, 50B are controlled to predetermined value by the deceleration/decel of car 15 on the basis of considering build up time Ta and braking releasing time T b.Yet brake equipment 50A, 50B also can only detect braking and remove time T b when the normal operation of car 15, and only based on braking, remove the electric current that time T b adjusts restraining coil 62, it is predetermined value that the deceleration/decel while take car 15 emergent stopping is controlled.
About the impact of bringing to the deceleration and stopping performance of magnet stopper 60, in most cases, compare with the impact that the change of ambient temperature by magnet stopper 60 causes, because rheological parameters' change with time causes the caused impact of change of application force of spring 36 larger.Therefore, even if brake equipment 50A, 50B only detect braking and remove time T b when the normal operation of car 15, and the deceleration/decel when only braking being removed to time T b and including the emergent stopping of considering car 15 in controls as predetermined value, brake equipment 50A, the 50B effect to the controller performance of the braking force of car drive motor 10 fully also can be improved.
Yet, if 50A is such to brake equipment, when the emergent stopping of car 15, include build up time Ta and braking releasing time T b in consider to control magnet stopper 60 braking force, can further improve the controller performance of the braking force that puts on car drive motor 10.That is, further improved the controller performance to the deceleration/decel of car.
In addition, such situation has been described: utilization has brake shoe 65, spring 63 and electromagnet 61 each 60 pairs of car drive motors 10 of one group of magnet stopper of and applies braking.Yet, also the structure magnet stopper identical with magnet stopper 60 can be configured to make brake shoe in circumferentially the staggering of brake wheel 12, thereby apply braking by 60 pairs of car drive motors 10 of two groups of magnet stoppers.By applying braking with 60 pairs of car drive motors 10 of two groups of magnet stoppers, further improved the controller performance of the deceleration/decel of car 15.
In addition, such situation has been described: braking information acquisition device 80 detects build up time Ta and braking releasing time when normal operation when car 15 starts to travel, yet can has been also for example when travelling of car 15 carried out pre-determined number, to have detected build up time Ta and braking releasing time T b.
In addition, in each embodiment, such situation has been described: build up time Ta detects the time of conduct till the size that plays inspection electric current to restraining coil 62 supply inspection electric currents reaches first threshold α I1, yet the detection of build up time Ta is not limited thereto.
Can be also for example that, in the normal operation process of car 15, as shown in Figure 7, the coil current command value of exporting when elevator control gear 30 is removed the braking that puts on car drive motor 10 is to have removed the pattern output of checking mode.In this case, can be also to remove electric currents, till flow through the current value of restraining coil 62, to reach the time with the Second Threshold β I0 of threshold value as rise detection, as build up time from starting to supply with braking to restraining coil 62.But, as mentioned above, braking is removed electric current and can before arriving I0, temporarily be declined, and therefore β will be set for to the impact that can not be subject to the decline of this electric current.
On the other hand, in the situation that supplying with inspection electric current and detect build up time to restraining coil 62, set to the decline of the electric current producing in the time of can not considering to flow through braking releasing electric current first threshold α I1.
Claims (5)
1. a brake equipment for elevator, it possesses magnet stopper and braking force control system,
Described magnet stopper has: brake shoe, described brake shoe is arranged to contact and to leave with brake wheel, described brake wheel with the car drive motor of car lifting is linked coaxially; Spring, described spring is pressed the application of force to described brake shoe to described brake wheel, so that described car drive motor is applied to braking; And restraining coil, described restraining coil forms electromagnet, and described electromagnet produces and overcomes the application force of described spring and make brake shoe leave the electromagnetic force of described brake wheel,
About described braking force control system, in described car normal operation process, when the braking force of removing described car drive motor, described braking force control system is so that size removes for the braking of I0 the mode that electric current flows through described restraining coil powers, so that described brake shoe leaves described brake wheel, and when described car emergent stopping, described braking force control system is adjusted the electric current of described restraining coil, control the braking force that puts on described car drive motor, so that the deceleration/decel of described car is predetermined value, the brake equipment of described elevator is characterised in that,
The brake equipment of this elevator possesses braking information acquisition device, when releasing puts on the braking force of described car drive motor, this braking information acquisition device detects from supply with braking to described restraining coil and removes the braking that electric current plays till the braking force that puts on described car drive motor is disengaged and remove the time
When described car emergent stopping, in the normal operation process of described braking force control system based on described car, the time is removed in detected described braking, adjust the electric current of described restraining coil, to control, put on the braking force of described car drive motor, thereby the deceleration/decel of the described car while making described car emergent stopping is predetermined value.
2. the brake equipment of elevator according to claim 1, is characterized in that,
Described braking information acquisition device detects build up time in the normal operation process of described car, described build up time is for removing electric current to the size that flows through the electric current of described restraining coil and reach predetermined rise detection with the time till threshold value from starting to supply with described braking to described restraining coil
When described car emergent stopping, in the normal operation process of described braking force control system based on described car, time and described build up time are removed in detected described braking, adjust the electric current of described restraining coil, to control, put on the braking force of described car drive motor, thereby the deceleration/decel of the described car while making described car emergent stopping is predetermined value.
3. the brake equipment of elevator according to claim 1, is characterized in that,
In the normal operation process of described car, described braking force control system is before detecting the described braking releasing time, so that size is powered for the mode that the inspection electric current of I1 flows through described restraining coil, then the power supply of temporarily disconnected to described restraining coil, the big or small I1 of described inspection electric current is less than described current value I 0, and described electromagnet is produced and can not remove the electromagnetic force of the braking force that puts on described car drive motor
Described braking information acquisition device detects current rise time, this current rise time is for supplying with described inspection electric current to the size that flows through the electric current of described restraining coil and reach than the little rise detection of described current value I 1 with the time till threshold value to described restraining coil from starting, when described car emergent stopping, time and described build up time are removed in the described braking detecting in the normal operation process of described braking force control system based at described car, adjust the electric current of described restraining coil, to control the braking force that puts on described car drive motor, thereby the deceleration/decel of the described car while making described car emergent stopping is predetermined value.
4. according to the brake equipment of the elevator described in any one in claim 1～3, it is characterized in that,
Described braking information acquisition device possesses:
Detector switch is removed in braking, and described braking is removed detector switch the state that puts on the braking force of described car drive motor and be disengaged is detected; And
Braking information arithmetical device, when releasing puts on the braking force of described car drive motor, described braking information arithmetical device is removed detector switch output based on described braking is removed time detecting out as described braking using the following time: from starting to supply with described braking to described restraining coil, remove electric current and play the time till the braking force that puts on described car drive motor is disengaged.
5. according to the brake equipment of the elevator described in any one in claim 1～3, it is characterized in that,
Described braking information acquisition device possesses:
Current detecting unit, described current detecting unit detects the value of the electric current that flows through described restraining coil; And
Braking information arithmetical device, when releasing puts on the braking force of described car drive motor, the output of described braking information arithmetical device based on described current detecting unit is removed time detecting out using the following time as described braking: from starting to supply with the time till the variation that electric current plays the current value that described restraining coil detected is removed in described braking to described restraining coil, the variation of the current value of described restraining coil be with by put on described car drive motor braking force releasing and the inverse electromotive force that produces at described restraining coil is corresponding.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2009/053035 WO2010095243A1 (en) | 2009-02-20 | 2009-02-20 | Brake device for elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102325712A CN102325712A (en) | 2012-01-18 |
| CN102325712B true CN102325712B (en) | 2014-11-05 |
Family
ID=42633544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980157005.2A Active CN102325712B (en) | 2009-02-20 | 2009-02-20 | Brake device for elevator |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2399858B1 (en) |
| JP (1) | JP5474040B2 (en) |
| KR (1) | KR101288722B1 (en) |
| CN (1) | CN102325712B (en) |
| WO (1) | WO2010095243A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5676310B2 (en) * | 2011-03-01 | 2015-02-25 | 東芝エレベータ株式会社 | Elevator control device |
| WO2012140945A1 (en) * | 2011-04-15 | 2012-10-18 | 三菱電機株式会社 | Brake device for elevator and brake operation method for elevator |
| EP2814769B1 (en) | 2012-02-17 | 2015-12-30 | Inventio AG | Braking system with variable friction |
| US10745239B2 (en) | 2014-11-24 | 2020-08-18 | Otis Elevator Company | Electromagnetic brake system for an elevator with variable rate of engagement |
| EP3153448A1 (en) * | 2015-10-08 | 2017-04-12 | Kone Corporation | Arrangement and method for controlling a machinery brake in an elevator |
| JP6227612B2 (en) * | 2015-10-14 | 2017-11-08 | ファナック株式会社 | Motor drive device with motor brake life prediction function |
| CA3005984A1 (en) | 2015-12-02 | 2017-06-08 | Inventio Ag | Method for driving a brake device of a lift system |
| JP6449806B2 (en) * | 2016-03-30 | 2019-01-09 | 株式会社日立製作所 | Elevator apparatus and operation control method thereof |
| JP6851229B2 (en) * | 2017-03-10 | 2021-03-31 | シャープ株式会社 | Brake control device, vehicle, and brake drive method |
| CN106966248B (en) * | 2017-04-25 | 2022-09-02 | 快意电梯股份有限公司 | Device and method for protecting car from accidental movement |
| JP2019119530A (en) * | 2017-12-28 | 2019-07-22 | 株式会社日立ビルシステム | Elevator, brake device, and brake abnormality detection method |
| JP6912006B2 (en) * | 2018-06-25 | 2021-07-28 | 三菱電機株式会社 | Elevator control system |
| US11415191B2 (en) * | 2019-10-04 | 2022-08-16 | Otis Elevator Company | System and method configured to identify conditions indicative of electromagnetic brake temperature |
| KR102328309B1 (en) | 2019-10-28 | 2021-11-17 | 이승범 | Elevator |
| CN115210161B (en) * | 2020-03-19 | 2024-09-10 | 三菱电机株式会社 | Control device for elevator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3061500B2 (en) * | 1993-02-16 | 2000-07-10 | 株式会社日立ビルシステム | Elevator electromagnetic brake operation state detection device |
| CN1556770A (en) * | 2002-09-27 | 2004-12-22 | 三菱电机株式会社 | Brake controller of elevator |
| JP3639080B2 (en) * | 1997-03-18 | 2005-04-13 | 株式会社日立ビルシステム | Elevator brake characteristics evaluation system |
| CN101132980A (en) * | 2006-03-14 | 2008-02-27 | 三菱电机株式会社 | Electromagnetic brake control device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07157211A (en) | 1993-12-03 | 1995-06-20 | Mitsubishi Electric Corp | Brake device for elevator |
| JPH07206288A (en) * | 1994-01-14 | 1995-08-08 | Toshiba Corp | Elevator |
| JPH0840658A (en) * | 1994-07-27 | 1996-02-13 | Hitachi Ltd | Control method and device for emergency brake of elevator |
| JPH1160099A (en) * | 1997-08-28 | 1999-03-02 | Hitachi Building Syst Co Ltd | Abnormality diagnosing device for magnet brake |
| JP2001278554A (en) * | 2000-03-29 | 2001-10-10 | Mitsubishi Electric Corp | Magnetic brake control device for elevator |
| JP2002246229A (en) * | 2001-02-19 | 2002-08-30 | Max Co Ltd | Solenoid driving circuit |
| JP5079288B2 (en) | 2006-09-13 | 2012-11-21 | 三菱電機株式会社 | Elevator equipment |
| JP4685803B2 (en) | 2007-01-10 | 2011-05-18 | 株式会社日立製作所 | Elevator brake control device |
-
2009
- 2009-02-20 KR KR1020117020680A patent/KR101288722B1/en active IP Right Grant
- 2009-02-20 WO PCT/JP2009/053035 patent/WO2010095243A1/en active Application Filing
- 2009-02-20 EP EP09840350.4A patent/EP2399858B1/en active Active
- 2009-02-20 JP JP2011500413A patent/JP5474040B2/en active Active
- 2009-02-20 CN CN200980157005.2A patent/CN102325712B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3061500B2 (en) * | 1993-02-16 | 2000-07-10 | 株式会社日立ビルシステム | Elevator electromagnetic brake operation state detection device |
| JP3639080B2 (en) * | 1997-03-18 | 2005-04-13 | 株式会社日立ビルシステム | Elevator brake characteristics evaluation system |
| CN1556770A (en) * | 2002-09-27 | 2004-12-22 | 三菱电机株式会社 | Brake controller of elevator |
| CN101132980A (en) * | 2006-03-14 | 2008-02-27 | 三菱电机株式会社 | Electromagnetic brake control device |
Non-Patent Citations (2)
| Title |
|---|
| JP特许第3061500号B2 2000.07.10 * |
| JP特许第3639080号B2 2005.04.13 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110123767A (en) | 2011-11-15 |
| JPWO2010095243A1 (en) | 2012-08-16 |
| KR101288722B1 (en) | 2013-07-22 |
| JP5474040B2 (en) | 2014-04-16 |
| CN102325712A (en) | 2012-01-18 |
| EP2399858A1 (en) | 2011-12-28 |
| EP2399858B1 (en) | 2019-04-10 |
| EP2399858A4 (en) | 2016-04-13 |
| WO2010095243A1 (en) | 2010-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102325712B (en) | Brake device for elevator | |
| CN100567119C (en) | Lift appliance | |
| US7740110B2 (en) | Elevator brake and brake control circuit | |
| JP5053074B2 (en) | Elevator equipment | |
| CN101056813B (en) | Elevator device | |
| CN101268003B (en) | Elevator apparatus | |
| CN105305888B (en) | Control device of electric motor | |
| CN101223097A (en) | Elevator apparatus | |
| EP2630070B2 (en) | Braking apparatus | |
| CN101128379B (en) | Elevator apparatus | |
| CN101522553B (en) | Elevator apparatus | |
| CN102378731B (en) | Elevator device | |
| CN110540117B (en) | Remote testing device for non-machine room brake | |
| KR100901229B1 (en) | Elevator device | |
| RU2531380C2 (en) | Electric drive | |
| JP5504710B2 (en) | Man conveyor control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |