CN102951571A - Control device method of winch for elevator equipment and modified method of control device - Google Patents
Control device method of winch for elevator equipment and modified method of control device Download PDFInfo
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- CN102951571A CN102951571A CN201210277326XA CN201210277326A CN102951571A CN 102951571 A CN102951571 A CN 102951571A CN 201210277326X A CN201210277326X A CN 201210277326XA CN 201210277326 A CN201210277326 A CN 201210277326A CN 102951571 A CN102951571 A CN 102951571A
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Abstract
To solve in cooler conditions, due to the gap between the brake drum and brake pads for part of the set distance is large, so there is due to the brake drum temperature rises of the time needed for start to brake with the brake drum temperature did not rise to the brake to the time needed for different and makes the elevator car can't run smoothly and due to the void part of the set distance is large, so that when the electromagnetic drive degaussing in brake pads and brake drum strong collision, resulting in the noise of the big problems. The present invention provides a kind of equipment to use elevator hoist control device, control method and control device of the modified method. When the gap to the parts of the drum brake pads and brake distance above the specified value, through the brake pads for the brake drum brake, and constitute the stator coil of the motor power, which USES the stator coil itself fever, at least for the brake drum for preheating.
Description
Technical field
The present invention relates to a kind of lift facility winch that in lift facility, uses, especially relate to the amending method that a kind of lift facility with stop mechanism is used control setup, control method and the control setup of winch.
Background technology
In nearest lift facility, take the height that suppresses building as purpose, be not provided for taking in lift facility on the top of hoist trunk with the Machine Room of the mechanical equipments such as winch (being designated hereinafter simply as " winch "), and the so-called machine room-less elevator that mechanical equipment is arranged in the hoist trunk has obtained popularizing.
In this machine room-less elevator, all devices that comprises winch that originally is arranged in the Machine Room all is arranged in the hoist trunk.
The structure that is used for winch is arranged in the hoist trunk can adopt various structures, but for winch being arranged on the narrower space of lift car and hoist trunk between the walls, need to adopt with relative with the hoist trunk wall to the slim winch that arranges of mode.
As known thin type hoister, a kind of thin type hoister that electromagnetic type stop mechanism (being designated hereinafter simply as " electro-magnetic braking device ") is installed is for example disclosed in the clear 59-144835 communique of Japan's open patent of patent documentation 1, it supports to rope sheave can rotate by the main shaft that is fixed on the framework, when being installed in stator on the framework, the rotor that arranges with the stator subtend is set to consist of the electrical motor of outer-rotor type at rope sheave, and by being arranged on after electrical motor on the winch carries out controlling run, when needs stop lift car, with brake pad by on the peripheral part that is pressed in the brake wheel of rotor one rotation to brake.
Technical literature formerly
Patent documentation
The clear 59-144835 communique of patent documentation 1 Japan's open patent
Summary of the invention
In existing winch, rotor is relative with stator to be formed with brake wheel to the ground setting at rotor, is provided with electro-magnetic braking device in the framework part that is positioned at the brake wheel outside.
Therefore, the heat that produces in stator coil and rotor when consisting of the motor action of winch is delivered in the brake wheel.
In the situation that this electrical motor moves continually, because of the heat of stator coil and rotor generation, the temperature of brake wheel rises to the temperature higher than framework temperature, thereby makes brake wheel that large het expansion occur.
After brake wheel expands, brake wheel be used for driving between the electromagnetic actuator device that is fixed on framework brake pad on partly and the brake wheel subtend apart from change.When the periphery of brake wheel expands, the phenomenon of excessively dwindling with the distance of this brake wheel contact and the brake pad that separates and the subtend gap between the brake wheel can occur specifically.
Therefore, in common design specification, consider the impact of the het expansion that produces when motor action, the distance of the subtend gap in the time of will not producing het expansion is set more greatly, and the subtend gap of brake wheel and brake pad has necessary predetermined distance when guaranteeing het expansion.
But, recently the user has proposed more strict requirement at aspect the smooth running of the lift car of lift facility and the aspect that suppresses the noise that lift facility produces.
On the other hand, as mentioned above, because the setpoint distance of the subtend gap under the normal condition is large, so that when het expansion has occured in brake wheel het expansion does not occur to the required time of braking beginning with brake wheel the time to the required asynchronism(-nization) of braking beginning, so can bring adverse influence to the smooth running of lift car.In addition, because the setpoint distance of subtend gap is large, thus after the electromagnetic actuator device demagnetization, brake pad and brake wheel generation strong collision and produce large noise, the occupant that existence can cause winch that floor is set such as is discontented with at the problem.
The object of the present invention is to provide a kind of lift facility control setup and the control method of winch, make it possible to the distance of the subtend gap between brake pad and the brake wheel is remained on suitable distance, thereby can make elevator realize the pulsation-free operation, and can suppress noise generation.
Solution
Control setup of the present invention is characterised in that, the brake pad by electro-magnetic braking device to be arranged on the epitrochanterian brake wheel that consists of electrical motor and brake or the winch of releasing brake in use, when the distance of the subtend gap of described brake pad and described brake wheel when specified value is above, by brake pad brake wheel is braked, and make the stator coil energising that consists of electrical motor, utilize thus the heating of stator coil self at least rotor and brake wheel to be carried out preheating.
The invention effect
Even the temperature between brake wheel and brake pad is low, in the larger situation of the distance of the subtend gap between brake wheel and the brake pad, also can utilize the heating of stator coil self that the temperature of rotor and brake wheel is risen, so can make the distance of the subtend gap between brake wheel and the brake pad become specified value, can solve in when, owing to brake wheel het expansion having occured het expansion does not occur to the required time of braking beginning with brake wheel the time begin that required asynchronism(-nization) brings the problem of adverse influence to the smooth running of lift car and owing to the setpoint distance of subtend gap is large to braking, so after the electromagnetic actuator device demagnetization, brake pad and brake wheel generation strong collision and produce problem of large noise etc.
Description of drawings
Fig. 1 is the section drawing of the general structure of expression machine room-less elevator equipment.
Fig. 2 is the section drawing when being provided with lift car, counterbalanced weight and lift facility with winch in the hoist trunk.
Fig. 3 is the front elevation that lift facility shown in Figure 1 is used winch.
Fig. 4 is the section drawing that lift facility shown in Figure 3 is used winch.
Fig. 5 is the diagram of block that the related lift facility of expression one embodiment of the invention is used the control setup structure of winch.
Fig. 6 is the diagram of circuit of the preheating operation routine processes of expression control setup shown in Figure 5.
Fig. 7 is for the constructional drawing of the related lift facility of other embodiments of the invention with the Improvement of the control setup of winch is described.
The specific embodiment
The first embodiment
Referring to accompanying drawing the related lift facility of one embodiment of the invention is described with winch.Fig. 1 is the section drawing for the general structure of explanation machine room-less elevator, and reference symbol 10 expressions among the figure are arranged on the hoist trunk in the building, and elevator has been taken in its inside.
Elevator mainly is made of lift car 11 and counterbalanced weight 12 and winch 13, and the bottom of lift car 11 is equipped with pulley 14, and pulley 15 is installed on the counterbalanced weight 12, on the S. A. of winch 13 (equaling the S. A. of electrical motor) rope sheave 16 is installed.
One end of main hoist cable 19 is installed in the top wall of hoist trunk 10, pass through successively the pulley 14 of rope sheave 16, the second intermediate pulley 18B and lift car 11 of pulley 15, the first intermediate pulley 18A, the winch 13 of counterbalanced weight 12 from this end, its other end is arranged on the top wall of hoist trunk 10.
Hoist cable reel to adopt 2: 1 hoist cable method for winding, utilizes the principle of movable pulley to reduce the elevator power of required winch 13.
The bottom of counterbalanced weight 12 is provided with for cushioning balance and weighs 12 the energy dispersers 191 of impulsive force when bumping, is provided with the energy disperser of the impulsive force when bumping for buffering lift car 11 in the bottom of lift car 11.
In above-mentioned elevator, send operating instruction by not shown controller to the electrical motor of winch 13 and stop mechanism etc., lift car 11 carries out lifting action according to this operating instruction towards the designated floor of building.
Fig. 2 is provided with the section drawing that has used as the hoist trunk 10 of the elevator of the slim Winch for elevator of object of the present invention.The lift car 11 and the counterbalanced weight 12 that connect by not shown main hoist cable 19 are arranged in the hoist trunk 10 in the mode that can carry out lifting.
Because the upkeep operation of this thin type hoister 13 carries out from lift car 11 sides usually, thus with the framework fabricate block 20 of winch 13 towards lift car 11 side settings.
Fig. 3 is the front elevation that lift facility is used winch 13, as shown in Figure 3, are connected the main hoist cable 19 that is connected with lift car 11 respectively and are wound up into and are arranged on lift facility with after on the rope sheave 16 of the face side of winch 13 in two ends with counterbalanced weight, extend towards the top respectively two end.
Rope sheave 16 rotatably remains on the framework fabricate block 20, consists of the electrical motor that outer-rotor type is arranged between the peripheral part of rope sheave 16 and framework fabricate block 20, and the outer peripheral face of the rotor-side of the electrical motor of this outer-rotor type uses as brake wheel 22.
This brake wheel 22 consists of integratedly with the periphery of rope sheave 16, rotate under the direct motor drive of outer-rotor type, and the identical a pair of electro-magnetic braking device 23 of structure of the top and the bottom by being separately positioned on framework fabricate block 20 is implemented braking.
Electro-magnetic braking device 23 has the brake pad 24 that contacts with the outer peripheral face of brake wheel 22, is used for keeping the brake pad retaining part 25 of this brake pad 24, with brake pad 24 by on the outer peripheral face that is pressed in brake wheel 22 rope sheave 16 applied the retarding spring 26 of braking force and to compress this retarding spring 26 so that brake pad 24 is discharged and makes rope sheave 16 return to the Electromagnetic Drive winding part 27 of rotatable state from the outer peripheral face of brake wheel 22.
Retarding spring 26 has to be pressed the movable core 28 that is built in the electro-magnetic braking device 23 towards brake wheel 22 sides, its result make movable core 28 via brake pad retaining part 25 with brake pad 24 tightly by on the outer peripheral face that is pressed in brake wheel 22 rope sheave 16 is maintained the function of braking mode.
Relative therewith, Electromagnetic Drive winding part 27 has the function of electromagnet, by making electric current flow through Electromagnetic Drive winding part 27, its inner stator is attracted movable core 28 by excitation, so movable core 28 overcomes the elastic force of retarding spring 26 brake pad 24 is driven towards the direction of leaving brake wheel 22, come brake off power with this.
Therefore, after the energising of the Electromagnetic Drive winding part 27 that cut off to consist of electromagnet, Electromagnetic Drive winding part 27 is by demagnetization, the elastic force that relies on thus retarding spring 26 with brake pad 24 by on the outer peripheral face that is pressed in brake wheel 22 so that rope sheave 16 is braked.
At this moment, the position of the brake pad 24 of two electro-magnetic braking devices 23 and brake wheel 22 contacts as shown in the figure up and down symmetrically relative to, so the electro-magnetic braking device 23 of pressing force by both sides that is applied on the brake wheel 22 from brake pad 24 is cancelled, rope sheave 16 can not tilt towards bending direction.
Followingly according to Fig. 4 the concrete structure of winch 13 is described.The framework main body 29 of framework fabricate block 20 has the hub portion 30 that is formed on its core, and an end of fixed main shaft 31 is inserted and secured in this hub portion 30.In addition, pulley set zoarium 21 rotatably is supported on the free end side of this fixed main shaft 31, consists of thus the electrical motor of cantilevered support structure.
The circular housing recess 32 of outer circumferential side that is arranged in the hub portion 30 of framework main body 29 is taken in the motor component of the stator 33 (comprising the stator coil part) that consists of motor portion.
Rope sheave housing 35 rotatably is supported on the free end side of fixed main shaft 31 by bearing 34, this rope sheave housing 35 consists of with the motor part one of rotor 36 grades of rope sheave 16 and formation motor portion.Wherein, framework main body 29 is carried out machine up to the part that needs dimensional accuracy and is made after being cast as roughly shape by cast iron etc.
As mentioned above, framework main body 29 is by the casting method manufacturing, its core forms the hub portion 30 of hollow form, and its outer peripheral portion is formed with the circular housing recess 32 that the end is arranged of general cylindrical shape shape, and stator 33 (comprising the stator coil part) etc. can be taken in the inside of this housing recess 32.
Utilize this housing recess 32 that rotor 36 is relative to the ground setting with stator 33 across the gap of regulation, be fixed with a plurality of permanent magnets 37 at the inner peripheral surface of this rotor 36.Thus, consist of the rotor of outer rotor type motor.
Wherein, the periphery of rotor 36 has formed brake wheel 22, and this brake wheel 22 is the peripheral part side that is formed on rotor 36 circularly.
In addition, rope sheave housing 35, rope sheave 16 and rotor 36 can not be one-body molded product, and after can being made into respectively alienable different part, are fixed by fitting methods such as bolt or shrink fit respectively.
Be provided with temperature sensor 41 in the housing recess 32 of framework main body 29, whether the distance that this temperature sensor 41 has a subtend gap of indirectly inferring brake wheel 22 and brake pad 24 the gap detection function more than specified value.
As mentioned above, be arranged on the N utmost point and the alternately setting on circumferentially of the S utmost point of the permanent magnet 37 of rotor 36 inboards, half that the quantity of this N utmost point and the S utmost point is identical and its quantity is number of poles.
The outside of the stator 33 of above-mentioned rotor 36 in being arranged on the housing recess 32 that forms with framework main body 29 is relative to the ground setting with stator 33 diametrically across small space, consists of thus so-called outer rotor type motor.The moment of rotation that produces in this motor portion is delivered to rope sheave 16 by rotor 36, is wound on many main hoist cables 19 on the rope sheave 16 with driving.
Make rope sheave 16 rotations by winch 13, when making lift car 11 lifting by main hoist cable thus, the elastic force that overcomes the retarding spring 26 of electro-magnetic braking device 23 makes Electromagnetic Drive winding part 27 excitations to apply open power.On the other hand, when lift car stops, after moving control by electrical motor, stop the energising of Electromagnetic Drive winding part 27 so that its demagnetization, the application force of retarding spring 26 is imposed on brake pad 24 so that brake pad 24 is pressed brake wheel 22, thus rope sheave 16 and electrical motor are braked.
In the winch 13 of the electrical motor that adopts above-mentioned outer-rotor type, there are brake wheel 22 and brake pad 24 at the peripheral part of the electrical motor of the outer-rotor type with rotor 36 and stator 33.
Therefore, in the situation that electrical motor moves continually, the temperature that the temperature of rotor 36 and brake wheel 22 is higher than framework main body 29 because the resistance heat of stator 33 (comprising the stator coil part) rises to, thus produce het expansion.Because poor with the thermal expansion amount of framework main body 29, the phenomenon that the distance of the subtend gap between brake wheel 22 and the brake pad 24 is excessively dwindled appears.
Therefore, consider the impact of the het expansion that the resistance heat by this stator 33 (comprising the stator coil part) causes, the distance of the subtend gap in the time of will not producing het expansion is set more greatly, and brake wheel 22 has necessary predetermined distance with the subtend gap of brake pad 24 when guaranteeing het expansion.
; as mentioned above; because the brake wheel 22 under the cold machine state (brake wheel 22 and rotor 36 are in cold machine state) is large with the setpoint distance of the subtend gap of brake pad 24; so begin required asynchronism(-nization) to braking during not rising with the brake wheel temperature to the required time of braking beginning when brake wheel 22 temperature rise, thereby can bring adverse influence to the smooth running of lift car.In addition, because the setpoint distance of subtend gap is large, so after can appearing at 27 demagnetizations of Electromagnetic Drive winding part, brake pad 24 strong collision occurs and produce the large problems such as noise with brake wheel 22.
As mentioned above, if according to the state behind the het expansion brake wheel 22 and the distance of the subtend gap of brake pad 24 are adjusted, then have to strengthen the setpoint distance of brake wheel 22 and the subtend gap of brake pad 24 under the cold machine state.
In an embodiment of the present invention, when brake wheel 22 and rotor 36 are in cold machine state, by brake pad 24 is mandatory brake wheel 22 is braked, the electric current that flows through stator 33 (comprising the stator coil part) by this moment makes stator 33 self-heatings, thus (hereinafter referred to as " preheating ") heated near the position rotor 36 and the brake wheel 22, be in distance under the heat expands state by the distance that makes brake wheel 22 and the subtend gap of brake pad 24, be maintained in the distance of brake wheel 22 and the subtend gap of brake pad 24 roughly certain.
Referring to Fig. 5 and Fig. 6 one embodiment of the invention are described, wherein preheating operation control setup 38 shown in Figure 5 is made of the following function member.
Be provided with time conditions in the preheating operation control setup 38 and obtain part 40, this time conditions obtains part 40 and obtain the car call signal from elevator control gear 39, and the time that detecting this car call signal does not have to occur is whether noncall time T A has passed through separately predefined setting-up time T α, and whether the dormant state that namely detection the past end of run is started at has continued more than the setting-up time T α.Thus, can realize function for monitoring to the mode of operation of winch 13.
In addition, also be provided with gap condition and obtain part 42, this gap condition obtain part 42 use temperature sensors 41 in the housing recess 32 that is arranged on framework main body 29 indirectly calculate subtend gap between brake wheel 22 and the brake pad 24 apart from GB whether more than setting value G β.
In the present embodiment by temperature indirectly calculate the subtend gap apart from GB, but also can be arranged to use sensor directly measure the subtend gap apart from GB.
In addition, also be provided with car call test section 43, this car call test section 43 obtains the car call signal from elevator control gear 39, and judges and to have or not this car call signal, detects thus in preheating operation whether produced the car call signal from elevator control gear 39.
In addition, also be provided with time period administrative section 44, this time period administrative section 44 is in order to judge that being in the time period of need implementing preheating operation still is in the time period that does not need to implement preheating operation, for example in the mode that distinguishes with low time of run section high time of run section managed.
In addition, also be provided with storage area 45, this storage area 45 is made of flash rom etc., is used for storing the control program of preheating operation program described later etc.And this storage area 45 so can rewrite program from the outside, can use special-purpose re-writing device to rewrite owing to adopting flash rom to consist of when upgrading.
In addition, also be provided with preheating operation administrative section 46, this preheating operation administrative section 46 is carried out the preheating operation of winch 13 according to the preheating operation program, and has the function that electrical motor and electro-magnetic braking device 23 are driven concurrently.
In addition, also be provided with control part 47, this control part 47 and time conditions obtain part 40, gap condition obtains the exchange of carrying out signal and data between part 42, car call test section 43, time period administrative section 44, storage area 45 and the preheating operation administrative section 46, and according to the preheating operation program electrical motor of winch 13 and the unit of electro-magnetic braking device 23 are controlled.
Describe referring to diagram of circuit shown in Figure 6 processing action to this preheating operation control setup 38.In the present embodiment, carry out the function of warm-up control by the microcomputer that is consisted of by microprocessor that consists of control part 47 etc.
Carry out the time interrupt signal starting of executive routine by occurring at regular intervals of the function of this preheating operation control setup 38, in addition, other programs that are attached to this executive routine are by the time interrupt signal starting of other different from described time interrupt signal.
Behind the warm-up control programming start, judging to be in step 60 (following with " step " referred to as " S ") needs to implement the time period of preheating operation or be in the time period that does not need to implement preheating operation.In the present embodiment, if be judged as high time of run section, then carry out preheating operation.This processing belongs to the function of time period administrative section 44.
Looking Out Time section in this S60 has for example represented at 8 o'clock in the result who detects～during 20 o'clock these high time of run sections, be judged as the time period of carrying out preheating operation this time period.At this, the time period of being managed by this time period administrative section 44 is not limited at 8 o'clock～20 o'clock these high time of run sections, and can set the arbitrarily time period according to the distinctive elevator condition of service in each building.Also can be arranged to all manage in one day 24 hours, but by the time period is limited, can suppress the time of run of preheating operation control setup 38.
When in S60, be judged as be in when not required between segment management part 44 manage time period the time, again return S60, be in when needing time period that time period administrative section 44 manages being judged as, enter S62 and measure the stop time.
This stop time condition refer to according to by the car call signal detection of elevator control gear 39 management from the end of run of previous lift car 11 start at without the car call time be noncall time T A, and judge whether this noncall time T A has passed through separately predefined setting-up time T α.Also not through this setting-up time T α the time, because the operation by previous lift car 11, near the brake wheel 22 temperature does not need to carry out preheating operation because the resistance heat of stator 33 (comprising the stator coil part) is in the higher state of temperature so be judged as under this state.This processing belongs to the function that time conditions obtains part 40.
When in S62, being judged as also not through this setting-up time T α, again return S60, when in S62, being judged as when having passed through this setting-up time T α, enter S64 and judge gap condition.That is to say, only passed through this condition of setting-up time T α according to the noncall time T A that in S62, judges and be difficult to also correctly judge whether that needs carry out preheating operation, therefore in step S64, judge whether to satisfy gap condition.
The gap condition of this moment refer to calculate subtend gap between above-mentioned brake wheel 22 and the brake pad 24 apart from GB whether more than predefined setting value G β.This processing belongs to the function that gap condition obtains part 42.
At this, in advance the temperature apart from the housing recess 32 of GB when predefined setting value G β is above of the subtend gap between brake wheel 22 and the brake pad 24 is measured, and the temperature that records is defined as design temperature T β.
Therefore, serviceability temperature sensor 41 is measured the temperature (near the namely temperature T B the brake wheel 22) of housing recess 32 in S64, the temperature of judging this housing recess 32 whether below defined design temperature T β, indirectly calculate thus the subtend gap apart from GB whether more than setting value G β.
Drive side at rope sheave shown in Figure 4 16 and rotor 36 is difficult to set temperature sensor 41, thus in the present embodiment temperature sensor 41 is arranged on framework main body 29 be used for take in the housing recess 32 of stator 33, can obtain easily temperature T B thus.
In the present embodiment, use by temperature sensor 41 detected temperature judge the subtend gap apart from GB whether more than setting value G β, if but can enough temperature other easy methods in addition replace the method that this utilizes temperature, then can further simplify the structure of obtaining the function of part 42 for the acquisition gap condition, therefore preferred.
For example also can be arranged to the electric current of the stator 33 (stator coil part) according to electrical motor and the resistance value that voltage is obtained stator 33 (stator coil part), calculate the temperature of brake wheel 22 by the temperature dependency that utilizes this resistance value to have, and further extrapolate the subtend gap apart from GB.
At this moment, if the resistance value of stator coil 33 then is judged as temperature low less than setting resistance value, if the resistance value of stator coil 33 then is judged as temperature high greater than setting resistance value, by this method calculate the subtend gap apart from GB.If the employing said structure then there is no need separately set temperature sensor 41, thus can simplified structure.
According to said method, owing to not needing newly-increased temperature sensor 41, so can be easily the new function of the present embodiment be applied in the lift facility that has built up.Certainly, in this occasion, need to use special-purpose re-writing device that the program that is stored in the storage area 45 is rewritten.This partial content is illustrated in the second embodiment described later.
In a word, when in S64, be judged as subtend gap between brake wheel 22 and the brake pad 24 apart from GB when setting value G β is above, enter into the put rules into practice preheating operation of time of S68.
In this preheating operation, stop energising to the Electromagnetic Drive winding part 27 of electro-magnetic braking device 23 to form erasing state, by retarding spring 26 with brake pad 24 tightly by on the peripheral part that is pressed in brake wheel 22 to form braking mode, and under this braking mode, make stator 33 (stator coil part) energising, so that stator 33 (stator coil part) self-heating.
By this preheating operation, the temperature of rotor 36 and brake wheel 22 rises and produces het expansion at least, thus can being controlled at below the setting value G β apart from GB the subtend gap between brake wheel 22 and the brake pad 24.
In addition, when in S64, be judged as the subtend gap apart from GB when setting value G β is following, enter into S66 and judge the current preheating operation that whether carrying out.Be judged as not when carrying out preheating operation, again return S60, current when carrying out preheating operation when in S66, being judged as and since the subtend gap between brake wheel 22 and the brake pad 24 apart from GB below setting value G β, finish preheating operation among the S74 so enter.
On the other hand, undertaken by S68 preheating operation during, in S70, judged whether to occur the calling of lift car 11.At this moment, use the signal from elevator control gear 39 to monitor the calling that lift car 11 whether occurred, when the calling of lift car 11 has occured, enter S70 and finish preheating operation.This processing belongs to the function of car call test section 43.And, because this moment, lift car 11 will enter running state, so finish preheating operation, make brake pad 24 leave brake wheel 22.
When in S70, being judged as the calling that lift car 11 do not occur, entering and judge among the S72 whether preheating operation has carried out specified time.Also do not reach specified time in the situation that be judged as preheating operation, again return S68 to proceed preheating operation.
When in S72, being judged as preheating operation and having carried out specified time, enter S74 and finish preheating operation.Because the function of this preheating operation control setup 38 is started by the time interrupt signal that occurs at regular intervals, so when interrupt signal having occurred, repeatedly carry out identical action and carry out preheating operation at every turn, perhaps finishes the action of preheating operation.
Above fundamental operation to the present embodiment is illustrated.But the present invention can also realize each application of following explanation.
For example, in the above description, when in S70, not detecting the calling of lift car 11, return S68 and proceed thermal pretreatment, finish preheating operation various opportunitys but also can be arranged in.For example, turn back to the judgement that S64 carries out gap condition repeatedly, when gap condition does not also recover, in S68, proceed thermal pretreatment, on the other hand, when S64 is judged as gap condition and has recovered, judge in S66 whether preheating operation is also being proceeded, also proceeding when middle being judged as preheating operation, entering S74 and finish preheating operation.
According to the ending method of above-mentioned preheating operation, can when being judged as gap condition and having recovered, finish S64 preheating operation.
In addition, also can be arranged among the step S68 and preset the preheating operation time.According to preseting having made the correspondence table of regulation preheating time apart from GB of subtend gap, and can show to change preheating time according to this correspondence specifically.At this moment, since do not measure the subtend gap apart from GB, so also can be arranged to prepare in advance tabulation that the temperature that obtains from temperature sensor 41 and the corresponding relation of preheating operation between the time have been made regulation, and finish preheating operation according to the preheating operation time from this tabulation acquisition.
By above-mentioned preheating operation control setup 38 is set, even the temperature between brake wheel 22 and the brake pad 24 is low, and the distance of the subtend gap between brake wheel 22 and the brake pad 24 is larger, also can the temperature of rotor 36 and brake wheel 22 be risen by preheating operation, so the distance of subtend gap can be maintained initial value.
Therefore, the distance of the subtend gap between brake wheel 22 and the brake pad 24 becomes expected value, thus in the time of can solving the above-mentioned temperature to required time of braking beginning and brake wheel when rising with the friction of brake wheel because of temperature and not rising to the required asynchronism(-nization) of braking beginning so that the problem that lift car can not move reposefully and owing to the setpoint distance of subtend gap greatly so that after the electromagnetic actuator device demagnetization brake pad and brake wheel generation strong collision produce the problem etc. of large noise.
In addition, the present invention is not limited in and is applied in Fig. 3 and winch 13 shown in Figure 4, also can be applied in the winch of other structures.In addition, this preheating operation control setup 38 also can be arranged in the elevator control gear 39.
Use the control setup of winch according to the related lift facility of the present embodiment, by gap condition obtain part 42 detect subtend gap between brake wheels 22 and the brake pad 24 apart from GB whether greater than setting value G β, and detecting for greater than setting value G β the time, make forcibly electro-magnetic braking device 23 enter braking mode by preheating operation administrative section 46, at this moment, make stator 33 (stator coil part) energising that consists of electrical motor, make stator 33 (stator coil part) self-heating, carry out thus preheating operation.
Therefore, in the time of can solving not rising with the brake wheel temperature to the required time of braking beginning when rising because of the brake wheel temperature to braking begin required asynchronism(-nization) so that lift car can not smooth running problem and owing to the setpoint distance of subtend gap greatly so that after the electromagnetic actuator device demagnetization brake pad and brake wheel generation strong collision produce the problem etc. of large noise.In addition, owing to need to not pasting body insulation in order to solve noise problem, so also have the effect that can reduce cost.
In addition, in the related preheating operation control setup 38 of the present embodiment, by with the brake pad 24 of electro-magnetic braking device 23 by on the peripheral part that is pressed in brake wheel 22 to form braking mode, and under this braking mode, make stator 33 (stator coil part) energising and so that stator 33 (stator coil part) heating, so it is all and comprise the additional heating device that the whole electro-magnetic braking device of rotor heats to for example winch not need to arrange motor heating device etc., the structure complicated can be avoided thus, and the quantity of parts can be reduced as much as possible.
In addition, use the control setup of winch according to the related lift facility of the present embodiment, obtain part 40 detection noncall time T A by time conditions and whether passed through setting-up time T α, and by gap condition obtain part 42 use temperature sensors 41 in the housing recess 32 that is arranged on framework main body 29 detect subtend gap between brake wheels 22 and the brake pad 24 apart from GB whether greater than setting value G β, detecting for greater than setting value G β the time, make forcibly electro-magnetic braking device 23 enter braking mode by preheating operation administrative section 46, at this moment, make stator 33 (stator coil part) energising that consists of electrical motor, so that stator 33 (stator coil part) self-heating carries out preheating operation thus.
Therefore, because carrying out the temperature sensor 41 that thermometry uses is arranged in the non-rotary framework main body 29, so except above-mentioned effect, also have the easy for installation of temperature sensor 41, and can with simple structure high reliability ground management subtend gap apart from GB.
Again, need the time period of enforcement preheating operation different to the difference of the condition of service of elevator because of the building at lift facility place, for example make a distinction the time period administrative section 44 that high time of run section is managed by arranging with low time of run section, obtaining part 40 at time conditions is judged as when not satisfying time conditions or gap condition obtains part 42 and is judged as and do not carry out preheating operation when not satisfying gap condition, and when lift car 11 moves hardly, do not carry out preheating operation yet, also have thus energy-saving effect.
The second embodiment
Lift facility described above is the control setup of the Winch for elevator when making in factory in order to be supplied to the building that lift facility newly is set with the control setup of winch, but imagination of the present invention equally also can be applied in and solves above-mentioned problem in the elevator that has built up.
The specification of regulation when the specification of the control setup of winch is manufacturing in the elevator that has built up, and nearest user the smooth running of the lift car in the lift facility and the noise of inhibition lift facility etc. are had higher requirement.
When the temperature to required time of braking beginning and brake wheel when therefore, certainly yet existing Yin Wendu to rise with the friction of brake wheel in the lift facility that has built up does not rise to braking begin required asynchronism(-nization) and so that the problem that lift car can not move reposefully and owing to the setpoint distance of subtend gap greatly and so that after the electromagnetic actuator device demagnetization brake pad and brake wheel generation strong collision produce the problem etc. of large noise.
In order to address the above problem, existing device can be changed into new winch and the control setup that has adopted said structure, but it is large to change the required expense of new installation, so preferably address the above problem on the basis that utilizes existing lift facility.
Therefore, be arranged in the present invention and can carry out the described preheating operation of the first embodiment by rewrite the program that is arranged on the storage area the elevator control gear 39 from the outside.
In elevator control gear shown in Figure 7 39, be provided with CPU (arithmetical device) 48, imput output circuit 49 and memory storage 50 etc.
CPU48 has according to incoming signal and carries out for the function of the computing of the control of the control of carrying out lift car 11 and winch and the function that operation result outputed to the electrical motor of winch and electro-magnetic braking device etc.
FROM51 is the quartz conductor non-volatile memory that can rewrite, and the function of the preheating operation control setup 38 that is illustrated in the first embodiment uses installation in this FROM51 as control.
Have the terminal that is connected with program rewriting device 52 in the elevator control gear 39, thus with program rewriting device 52 with can rewrite after this rewriting terminal is connected.Therefore, by rewriting with program and constant etc. from the outside to control, can carry out preheating operation.
When the owner of building waits requiring of having proposed to require to address the above problem, the control program of the control setup 39 of winch 13 and constant etc. are rewritten.
Be provided with the dish reading mechanism in the program rewriting device 52, the dish 53 that therefore will store the program of rewriting usefulness inserts this dish reading mechanism, and the hard disk in the program rewriting device transmits the program of rewriting usefulness.
The program of rewriting usefulness has been endowed the function identical with the first embodiment, and it is to obtain the program that function 54, gap condition are obtained function 55, car call measuring ability 56, time management measuring ability 57 and preheating operation management function 58 for the execution time condition specifically.
As mentioned above, be sent among the FROM51 by the program that will rewrite usefulness, elevator control gear 39 can be carried out preheating operation with the first embodiment the samely.
In the first embodiment and since use the temperature that is detected by temperature sensor 41 calculate the subtend gap apart from GB, so need to set up new temperature sensor 41, and mounting temperature sensor 41 is not too easy in the lift facility that has built up.So, in this second embodiment, do not adopt temperature sensor 41, but obtain resistance value according to electric current and the voltage of stator 33 (stator coil part), and according to this resistance value calculate the subtend gap apart from GB, replace temperature sensor 41 with this.
That is to say to have temperature dependency according to the electric current of the stator 33 (stator coil part) of electrical motor and the resistance value that voltage is obtained, utilize this characteristic to calculate the temperature of brake wheel 22, and further calculate the subtend gap apart from GB.At this moment, if the resistance value of stator coil part 33 then is judged as temperature low less than setting resistance value, if the resistance value of stator coil part 33 then is judged as temperature high greater than setting resistance value, by this method calculate the subtend gap apart from GB.
Therefore, according to above-described embodiment, need in the winch of the lift facility that has built up, not newly establish temperature sensor 41 and just can carry out preheating operation.
So, according to the present embodiment, the same with the first embodiment, the distance of the subtend gap between brake wheel 22 and the brake pad 24 becomes expected value, thus in the time of can solving the above-mentioned temperature to required time of braking beginning and brake wheel when rising because of the brake wheel temperature and not rising to braking begin required asynchronism(-nization) so that the problem that lift car can not move reposefully and owing to the setpoint distance of subtend gap greatly so that after the electromagnetic actuator device demagnetization brake pad and brake wheel generation strong collision produce the problem etc. of large noise.
Nomenclature
10 ... hoist trunk, 11 ... lift car, 12 ... counterbalanced weight, 13 ... winch, 5 ... framework, 16 ... rope sheave, 19 ... main hoist cable, 22 ... brake wheel, 23 ... electro-magnetic braking device, 24 ... brake pad, 26 ... retarding spring, 27 ... Electromagnetic Drive winding part, 28 ... movable core, 31 ... fixed main shaft, 30 ... hub portion, 32 ... housing recess, 33 ... stator (comprising coiler part), 36 ... rotor, 37 ... permanent magnet, 38 ... the preheating operation control setup, 39 ... elevator control gear, 40 ... time conditions obtains part, and 41 ... temperature sensor, 42 ... gap condition obtains part, 43 ... the car call test section, 44 ... the time period administrative section, 45 ... storage area, 46 ... the preheating operation administrative section, 47 ... control part
Claims (9)
1. a lift facility is with the control setup of winch, it has the rope sheave that is wound be used to the main hoist cable that makes the lift car lifting, be used for driving the rotor of described rope sheave rotation, the brake wheel that rotates with described rotor, stator with described rotor subtend setting, be wound on the stator coil on the described stator, apply the brake pad of braking force to described brake wheel, winch for the electromagnetism winding that drives the movable core that is connected with described brake pad uses, described lift facility is characterised in that with the control setup of winch
When the distance of the subtend gap of described brake pad and described brake wheel when specified value is above, by described brake pad described brake wheel is braked, and make the stator coil energising that consists of electrical motor, utilize thus the heating of described stator coil self at least described brake wheel to be carried out preheating.
2. a lift facility is with the control setup of winch, it has the rope sheave that is wound be used to the main hoist cable that makes the lift car lifting, be used for driving the rotor of described rope sheave rotation, the brake wheel that rotates with described rotor, stator with described rotor subtend setting, be wound on the stator coil on the described stator, apply the brake pad of braking force to described brake wheel, winch for the electromagnetism winding that drives the movable core that is connected with described brake pad uses, described lift facility is characterised in that with the control setup of winch
Have:
Time conditions obtains part, and described time conditions obtains the noncall time of partly detecting at least lift car and whether passed through predefined setting-up time;
Gap condition obtains part, and whether described gap condition acquisition unit divides the distance of the subtend gap of detecting described brake pad and described brake wheel more than predefined specified value; And
The preheating operation administrative section, divide detection for having passed through described setting-up time in described time conditions acquisition unit, and described gap condition acquisition unit divides the distance that detects as described subtend gap in the situation that more than the specified value, described preheating operation administrative section is braked described brake wheel by described brake pad, and make the stator coil energising that consists of described electrical motor, utilize thus the heating of described stator coil self at least described rotor and described brake wheel to be carried out preheating.
3. lift facility as claimed in claim 2 is characterized in that with the control setup of winch,
Described gap condition acquisition unit is divided the temperature that detects near the position described brake wheel, when this temperature when set point of temperature is following, be judged as the distance of subtend gap of described brake pad and described brake wheel more than specified value.
4. lift facility as claimed in claim 2 is characterized in that with the control setup of winch,
Described preheating operation administrative section is set by described brake wheel being braked and preheating time when making described stator coil switch on to carry out preheating in variable mode.
5. lift facility as claimed in claim 4 is characterized in that with the control setup of winch,
By described brake wheel is braked and preheating time when making described stator coil switch on to carry out preheating different because of the distance of the subtend gap of described brake pad and described brake wheel, described distance is larger, then described preheating time is longer.
6. a lift facility is with the control method of winch, it is to have the rope sheave that is wound be used to the main hoist cable that makes the lift car lifting, be used for driving the rotor of described rope sheave rotation, the brake wheel that rotates with described rotor, stator with described rotor subtend setting, be wound on the stator coil on the described stator, apply the brake pad of braking force to described brake wheel, be used for to drive the control method of winch of the electromagnetism winding of the movable core that is connected with described brake pad, described lift facility is characterised in that with the control method of winch
Described control method is carried out:
(a) obtain the distance of the subtend gap of described brake pad and described brake wheel, and the distance of judging this subtend gap step more than predefined specified value whether; And
(b) in the distance that is judged as described subtend gap when specified value is above, by described brake pad described brake wheel is braked, and is made the step of described stator coil energising,
At least described brake wheel is carried out preheating by the heating of described stator coil self thus.
7. a lift facility is with the control method of winch, it is to have the rope sheave that is wound be used to the main hoist cable that makes the lift car lifting, be used for driving the rotor of described rope sheave rotation, the brake wheel that rotates with described rotor, stator with described rotor subtend setting, be wound on the stator coil on the described stator, apply the brake pad of braking force to described brake wheel, be used for to drive the control method of winch of the electromagnetism winding of the movable core that is connected with described brake pad, described lift facility is characterised in that with the control method of winch
Described control method is carried out:
(a) judge whether the noncall time of described lift car passed through the step of predefined setting-up time;
(b) be judged as the described noncall time when setting-up time is above, obtaining the distance of the subtend gap of described brake pad and described brake wheel, and the distance of judging this subtend gap step more than specified value whether; And
(c) in the distance that is judged as described subtend gap when specified value is above, by described brake pad described brake wheel is braked, and is made the step of described stator coil energising,
At least described brake wheel is carried out preheating by the heating of described stator coil self thus.
8. a lift facility is with the amending method of the control setup of winch, and described lift facility is the lift facility that has been arranged in the building, has:
Along the rollered lift car of hoist trunk lifting, an end is fixed on the main hoist cable of described hoist trunk by described pulley;
Along the rollered counterbalanced weight of described hoist trunk lifting, the other end is fixed on the described main hoist cable of described hoist trunk by described pulley;
Winch, described winch is between described lift car and described counterbalanced weight, have electrical motor and electro-magnetic braking device, described electrical motor be wound with by driving described main hoist cable rope sheave rotation rotor and consist of with the stator of described rotor subtend setting and the stator coil that is wound on the described stator, described electro-magnetic braking device has the brake pad of braking being formed on described epitrochanterian brake wheel; And
Control setup, described control setup are that arithmetical device, imput output circuit and rewritable memory storage etc. consist of by the CPU that controls at least described electrical motor and described electro-magnetic braking device,
Described lift facility is characterised in that with the amending method of the control setup of winch,
Rewriting terminal in making the program rewriting device and being arranged on described control setup is connected, to have the distance that (a) obtains the subtend gap of described brake pad and described brake wheel from described program rewriting device, and the distance of judging this subtend gap whether the function more than the predefined specified value and (b) in the distance that is judged as described subtend gap when specified value is above, by described brake pad described brake wheel is braked, and the preheating program of the function of described stator coil energising is sent in the described rewritable memory storage, by making the described preheating program starting that is sent to described rewritable memory storage, utilize described brake pad that described brake wheel is braked, and make described stator coil energising, can utilize thus the heating of described stator coil self at least described brake wheel to be carried out preheating.
9. a lift facility is with the amending method of the control setup of winch, and described lift facility is the lift facility that has been arranged in the building, has:
Along the rollered lift car of hoist trunk lifting, an end is fixed on the main hoist cable of described hoist trunk by described pulley;
Along the rollered counterbalanced weight of described hoist trunk lifting, the other end is fixed on the described main hoist cable of described hoist trunk by described pulley;
Winch, described winch is between described lift car and described counterbalanced weight, have electrical motor and electro-magnetic braking device, described electrical motor be wound with by driving described main hoist cable rope sheave rotation rotor and consist of with the stator of described rotor subtend setting and the stator coil that is wound on the described stator, described electro-magnetic braking device has the brake pad of braking being formed on described epitrochanterian brake wheel; And
Control setup, described control setup are that arithmetical device, imput output circuit and rewritable memory storage etc. consist of by the CPU that controls at least described electrical motor and described electro-magnetic braking device,
Described lift facility is characterised in that with the amending method of the control setup of winch,
Rewriting terminal in making the program rewriting device and being arranged on described control setup is connected, to have (a) from described program rewriting device and judge whether the noncall time of described lift car passed through the function of predefined setting-up time, (b) be judged as the described noncall time when setting-up time is above, obtain the distance of the subtend gap of described brake pad and described brake wheel, and the distance of judging this subtend gap whether the function more than the specified value and (c) in the distance that is judged as described subtend gap when specified value is above, by described brake pad described brake wheel is braked, and make the preheating program of the function of described stator coil energising be sent to described rewritable memory storage, by making the described preheating program starting that is sent to described rewritable memory storage, utilize described brake pad that described brake wheel is braked, and make described stator coil energising, can utilize thus the heating of described stator coil self at least described brake wheel to be carried out preheating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011183386A JP5432962B2 (en) | 2011-08-25 | 2011-08-25 | Elevator hoisting machine control device, control method, and control device refurbishment method |
| JP2011-183386 | 2011-08-25 |
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| Publication Number | Publication Date |
|---|---|
| CN102951571A true CN102951571A (en) | 2013-03-06 |
| CN102951571B CN102951571B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210277326.XA Active CN102951571B (en) | 2011-08-25 | 2012-08-06 | The amending method of control device, control method and the control device of hoist engine for lift facility |
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| Country | Link |
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| JP (1) | JP5432962B2 (en) |
| CN (1) | CN102951571B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366508A (en) * | 2014-08-08 | 2016-03-02 | 株式会社日立制作所 | Hoist and elevator |
| CN111707387A (en) * | 2020-06-24 | 2020-09-25 | 广东韶钢松山股份有限公司 | Refining furnace temperature measuring gun lifting device and method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6049538B2 (en) * | 2013-05-20 | 2016-12-21 | 三菱電機ビルテクノサービス株式会社 | Elevator system and elevator condensation prevention method |
| CN109412384A (en) * | 2018-11-05 | 2019-03-01 | 苏州市职业大学 | Elevator ring type external rotor permanent magnet brake |
| CN113059139A (en) * | 2021-04-15 | 2021-07-02 | 嘉兴四通车轮股份有限公司 | Brake drum heating device and heating process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003002448A1 (en) * | 2001-06-29 | 2003-01-09 | Mitsubishi Denki Kabushiki Kaisha | Elevator hoist and elevator device |
| JP2006089162A (en) * | 2004-09-21 | 2006-04-06 | Mitsubishi Electric Corp | Brake of hoisting machine for elevator |
| CN1916435A (en) * | 2005-08-17 | 2007-02-21 | 三阳工业株式会社 | Brake gear |
| CN1984833A (en) * | 2005-05-30 | 2007-06-20 | 三菱电机株式会社 | Elevator hoist |
| JP2010235266A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Ltd | Thin type hoisting machine and driving motor for thin type hoisting machine |
| CN102150348A (en) * | 2008-09-11 | 2011-08-10 | 三菱电机株式会社 | Hoist for elevator |
-
2011
- 2011-08-25 JP JP2011183386A patent/JP5432962B2/en active Active
-
2012
- 2012-08-06 CN CN201210277326.XA patent/CN102951571B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003002448A1 (en) * | 2001-06-29 | 2003-01-09 | Mitsubishi Denki Kabushiki Kaisha | Elevator hoist and elevator device |
| JP2006089162A (en) * | 2004-09-21 | 2006-04-06 | Mitsubishi Electric Corp | Brake of hoisting machine for elevator |
| CN1984833A (en) * | 2005-05-30 | 2007-06-20 | 三菱电机株式会社 | Elevator hoist |
| CN1916435A (en) * | 2005-08-17 | 2007-02-21 | 三阳工业株式会社 | Brake gear |
| CN102150348A (en) * | 2008-09-11 | 2011-08-10 | 三菱电机株式会社 | Hoist for elevator |
| JP2010235266A (en) * | 2009-03-31 | 2010-10-21 | Hitachi Ltd | Thin type hoisting machine and driving motor for thin type hoisting machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366508A (en) * | 2014-08-08 | 2016-03-02 | 株式会社日立制作所 | Hoist and elevator |
| CN111707387A (en) * | 2020-06-24 | 2020-09-25 | 广东韶钢松山股份有限公司 | Refining furnace temperature measuring gun lifting device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013043757A (en) | 2013-03-04 |
| JP5432962B2 (en) | 2014-03-05 |
| CN102951571B (en) | 2016-05-11 |
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