CN106365064A - Double code value stroke amplitude limiting method and device of lifting mechanism - Google Patents
Double code value stroke amplitude limiting method and device of lifting mechanism Download PDFInfo
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- CN106365064A CN106365064A CN201610798517.9A CN201610798517A CN106365064A CN 106365064 A CN106365064 A CN 106365064A CN 201610798517 A CN201610798517 A CN 201610798517A CN 106365064 A CN106365064 A CN 106365064A
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- Prior art keywords
- frequency conversion
- conversion motor
- numerical value
- value
- motor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Elevator Control (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a double code value stroke amplitude limiting method and device of a lifting mechanism, and belongs to the technical field of mechanical control. The lifting mechanism comprises a first variable frequency motor and a second variable frequency motor. The control method includes the steps that the first variable frequency motor and the second variable frequency motor receive starting commands at the same time; in the running process of the first variable frequency motor and the second variable frequency motor, code value data m1 of a coder of the first variable frequency motor and code value data m2 of a coder of the second variable frequency motor are collected in real time; a numerical value of an absolute value of m1-m2 is obtained; and the value range of the numerical value of the absolute value of m1-m2 is controlled, and therefore the terrain clearances of the first variable frequency motor and the second variable frequency motor are the same. The control method can be achieved through the control device. By means of the method and device, motor loads can be scattered so that the loads can be prevented from exceeding rated loads; and in addition, the head and the tail of a loaded object can ascend and descend synchronously and stably.
Description
Technical field
The present invention relates to machine control techniques field, the dicode value stroke amplitude limit method of more particularly to a kind of elevating mechanism
And device.
Background technology
The object larger to weight be during for example buses lift, due to its weight larger it is difficult to ensure it
Motor load is less than its rated load, further, since its volume is larger, and it is also difficult to ensure it, head and the tail are synchronous, smoothly risen
Fall.
Content of the invention
In view of this, the invention provides a kind of dicode value stroke amplitude limit method of elevating mechanism and device, it can make
Obtain motor load to be disperseed and avoid load to exceed rated load；And, it is also possible that it is synchronous, smoothly to be loaded thing head and the tail
Lifted, thus more suitable for practicality.
In order to reach above-mentioned first purpose, the technology of the dicode value stroke amplitude limit method of elevating mechanism that the present invention provides
Scheme is as follows:
In the dicode value stroke amplitude limit method of elevating mechanism that the present invention provides, described elevating mechanism includes the first variable-frequency electric
Machine, the second frequency conversion motor；The dicode value stroke amplitude limit method of described elevating mechanism comprises the following steps:
Described first frequency conversion motor, the second frequency conversion motor receive startup order simultaneously；
In described first frequency conversion motor, the second frequency conversion motor running, the first frequency conversion motor described in Real-time Collection
Code value data m of encoder1, the second frequency conversion motor encoder code value data m2；
Obtain | m1-m2| numerical value；
Control described | m1-m2| numerical value span so that described first frequency conversion motor, the second frequency conversion motor from
Ground level is identical.
The dicode value stroke amplitude limit method of the elevating mechanism that the present invention provides also can be real further using following technical measures
Existing.
Preferably, described elevating mechanism also includes connecting shaft, one end of described connecting shaft is fixedly connected on described first
The output shaft of frequency conversion motor, the other end of described connecting shaft is fixedly connected on the output shaft of described second frequency conversion motor.
Preferably, working as | m1-m2| numerical value≤first threshold when, the first frequency conversion motor described in continuous service and second change
Frequency motor.
Preferably, working as first threshold ＜ | m1-m2| numerical value≤Second Threshold when, to m1、m2In less numerical value correspond to
Frequency conversion motor control circuit transmitting control commands, increase m1、m2In the corresponding frequency conversion motor of less numerical value power, or
Person reduces m1、m2In the larger corresponding frequency conversion motor of numerical value power, until | m1-m2| numerical value≤first threshold, persistently transport
Described first frequency conversion motor of row, the second frequency conversion motor.
Preferably, working as | m1-m2| numerical value ＞ Second Threshold when, simultaneously to described first frequency conversion motor, the second variable-frequency electric
Machine transmitting control commands, make the control circuit of described first frequency conversion motor, the control circuit dead electricity simultaneously of the second frequency conversion motor.
Preferably, | m1-m2| numerical value ＞ Second Threshold when, triggering alarm device send alarm.
Preferably, described alarm is selected from buzzer, flashing lamp, qq message, SMS, wechat message, speech message
One of or several.
In order to reach above-mentioned second purpose, the technology of the dicode value stroke amplitude limiter of elevating mechanism that the present invention provides
Scheme is as follows:
In the dicode value stroke amplitude limiter of elevating mechanism that the present invention provides, described elevating mechanism includes the first variable-frequency electric
Machine, the second frequency conversion motor；
The dicode value stroke amplitude limiter of described elevating mechanism includes the code value data of order issuance unit, the first encoder
Collecting unit, the code value data acquisition unit of second encoder, acquiring unit, judging unit；
Described order issuance unit is used for sending and starting order to described first frequency conversion motor, the second frequency conversion motor simultaneously；
The code value data acquisition unit of described first encoder is used for gathering the code of the encoder of described first frequency conversion motor
Value Data m1；
The code value data acquisition unit of described second encoder is used for gathering the code of the encoder of described second frequency conversion motor
Value Data m2；
Described acquiring unit is used for by obtaining | m1-m2| numerical value；
Described judging unit is used for judging | m1-m2| numerical value span, described order issuance unit sentences according to described
The judged result of disconnected unit controls described first frequency conversion motor, the second frequency conversion motor so that described first frequency conversion motor, the second change
The terrain clearance of frequency motor is identical.
The dicode value stroke amplitude limiter of the elevating mechanism that the present invention provides also can be real further using following technical measures
Existing.
Preferably, described elevating mechanism also includes connecting shaft, one end of described connecting shaft is fixedly connected on described first
The output shaft of frequency conversion motor, the other end of described connecting shaft is fixedly connected on the output shaft of described second frequency conversion motor.
Preferably, working as | m1-m2| numerical value≤first threshold when, described judging unit is by described order issuance unit
First frequency conversion motor, the second frequency conversion motor described in continuous service.
Preferably, working as first threshold ＜ | m1-m2| numerical value≤Second Threshold when, by described order issuance unit to
m1、m2In the corresponding frequency conversion motor of less numerical value control circuit transmitting control commands, increase m1、m2In less numerical value pair
The power of the frequency conversion motor answered, or reduce m1、m2In the larger corresponding frequency conversion motor of numerical value power, until | m1-m2|
Numerical value≤first threshold, the first frequency conversion motor, the second frequency conversion motor described in continuous service.
Preferably, working as | m1-m2| numerical value ＞ Second Threshold when, by described order issuance unit simultaneously to described
One frequency conversion motor, the second frequency conversion motor transmitting control commands, make control circuit, second frequency conversion motor of described first frequency conversion motor
Control circuit dead electricity simultaneously.
Preferably, the dicode value stroke amplitude limiter of described elevating mechanism also includes alarm device, when | m1-m2| number
During value ＞ Second Threshold, described by described order issuance unit trigger described alarm device send alarm.
Preferably, described alarm is selected from buzzer, flashing lamp, qq message, SMS, wechat message, speech message
One of or several.
In the dicode value stroke amplitude limit method and device of the elevating mechanism that the present invention provides, elevating mechanism includes the first change
Frequency motor, the second frequency conversion motor.In this case, can by be loaded the sharing of load of thing to the first frequency conversion motor, second
Frequency conversion motor, now, is minimized by the load of the first frequency conversion motor and the second frequency conversion motor alone bear, even if being loaded thing
Weight very big it is also possible to ensure the first frequency conversion motor, the load of the second frequency conversion motor alone bear as far as possible.
Additionally, in the dicode value stroke amplitude limit method of elevating mechanism of present invention offer and device, being also directed to the first frequency conversion
Code value data m of the encoder of motor1, the second frequency conversion motor encoder code value data m2Obtain | m1-m2| numerical value, control
System is described | m1-m2| numerical value span so that the terrain clearance of described first frequency conversion motor, the second frequency conversion motor is identical.
In this case, because the terrain clearance of the first frequency conversion motor, the second frequency conversion motor is identical, thereby it is ensured that being loaded
Thing head and the tail are synchronous, smoothly lifted.And if do not limited | m1-m2| numerical value, the first frequency conversion motor of leaving, the second variable-frequency electric
The code value difference of the encoder of machine increases, and the first frequency conversion motor, the stroke of the second frequency conversion motor can be led to deviation so that the
Spacing between the output shaft of the output shaft of one frequency conversion motor and the second frequency conversion motor increases, when the output shaft of the first frequency conversion motor
The spacing and output shaft of the second frequency conversion motor between increases above when being loaded pulling force that thing can bear, can lead to be added
Loading is ruptured.
Brief description
By reading the detailed description of hereafter preferred implementation, various other advantages and benefit are common for this area
Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as to the present invention
Restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical part.In the accompanying drawings:
The flow chart of steps of the dicode value stroke amplitude limit method of the elevating mechanism that Fig. 1 provides for the embodiment of the present invention one；
The signal of the dicode value stroke amplitude limiter of the elevating mechanism that Fig. 2 provides for the embodiment of the present invention two flows to relation and shows
It is intended to；
Fig. 3 be the embodiment of the present invention one or embodiment two be related to the first frequency conversion motor, the motion of the second frequency conversion motor
Process schematic.
Specific embodiment
The present invention is to solve the problems, such as prior art, provide a kind of elevating mechanism dicode value stroke amplitude limit method and
Device, it enables to motor load and is disperseed and avoid load to exceed rated load；And, it is also possible that it is first to be loaded thing
Tail is synchronous, smoothly lifted, thus more suitable for practicality.
For further illustrating that the present invention is to reach technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to according to the dicode value stroke amplitude limit method of elevating mechanism proposed by the present invention and device, it is concrete
Embodiment, structure, feature and its effect, after describing in detail such as.In the following description, different " embodiment " or " enforcement
What example " referred to is not necessarily same embodiment.Additionally, special characteristic in one or more embodiments, structure or feature can be by any
Suitable form combines.
The terms "and/or", only a kind of incidence relation of description affiliated partner, represents there may be three kinds of passes
System, for example, a and/or b, specifically it is interpreted as: a and b can be included simultaneously, can be with individualism a it is also possible to individualism
B, can possess above-mentioned three kinds of any one situations.
Embodiment one
Referring to accompanying drawing 1, in the dicode value stroke amplitude limit method of the elevating mechanism that the embodiment of the present invention one provides, elevator
Structure includes the first frequency conversion motor, the second frequency conversion motor；
The dicode value stroke amplitude limit method of elevating mechanism comprises the following steps:
Step 101: described first frequency conversion motor, the second frequency conversion motor receive startup order simultaneously；
Step 102: in described first frequency conversion motor, the second frequency conversion motor running, the first change described in Real-time Collection
Code value data m of the encoder of frequency motor1, the second frequency conversion motor encoder code value data m2；
Step 103: obtain | m1-m2| numerical value；
Step 104: control described | m1-m2| numerical value span so that described first frequency conversion motor, the second frequency conversion
The terrain clearance of motor is identical.
In the present embodiment, the code value m of the first frequency conversion motor1Span be that 0～6700 (corresponding stroke is
520mm), the code value m of the second frequency conversion motor2Span be 0～6700 (corresponding stroke be 520mm).Indication herein
Code value be bidirectional accumulating value.When elevating mechanism rises, corresponding code value increases；When elevating mechanism declines, corresponding code value subtracts
Few.
In the dicode value stroke amplitude limit method of the elevating mechanism that the present invention provides, elevating mechanism includes the first variable-frequency electric
Machine, the second frequency conversion motor.In this case, the sharing of load of thing will can be loaded to the first frequency conversion motor, the second frequency conversion
Motor, now, is minimized by the load of the first frequency conversion motor and the second frequency conversion motor alone bear, even if being loaded the weight of thing
Amount is very greatly it is also possible to ensure the first frequency conversion motor, the load of the second frequency conversion motor alone bear as far as possible.
Additionally, in the dicode value stroke amplitude limit method of elevating mechanism of present invention offer and device, being also directed to the first frequency conversion
Code value data m of the encoder of motor1, the second frequency conversion motor encoder code value data m2Obtain | m1-m2| numerical value, control
System is described | m1-m2| numerical value span so that the terrain clearance of described first frequency conversion motor, the second frequency conversion motor is identical,
Thereby it is ensured that being loaded thing head and the tail synchronization, smoothly being lifted.In fig. 3, label 201 represents the first frequency conversion motor
Initial position, label 301 represents the initial position of the second frequency conversion motor, and label 401 represents and is in the first frequency conversion motor and the
The initial position of the steelframe between two frequency conversion motors, right | m1-m2| numerical value limited in the case of, the first frequency conversion motor
Should be label 203 location in t location, and be between the first frequency conversion motor and the second frequency conversion motor
Steelframe should be label 403 location in t location, and if do not limited | m1-m2| numerical value, leave
First frequency conversion motor, the code value difference of the encoder of the second frequency conversion motor increase, and can lead to the first frequency conversion motor, the second variable-frequency electric
Deviation in the stroke of machine, and in fig. 3, label 202 represents the first frequency conversion motor location in moment t, label 302
Represent position described in moment t for second frequency conversion motor, label 402 expression is in the first frequency conversion motor and the second frequency conversion motor
Between steelframe in moment t state in which, according to Pythagorean theorem, now, bidding number 402 corresponding length are l2, label
403 corresponding length are l3, the corresponding length of label 404 is l4, then now,I.e. to making the first frequency conversion
Spacing l between the output shaft of the output shaft of motor and the second frequency conversion motor2Increase, when the output shaft and the of the first frequency conversion motor
Spacing l between the output shaft of two frequency conversion motors2Increase above and be between the first frequency conversion motor and the second frequency conversion motor
During the pulling force that steelframe can bear, the steelframe being between the first frequency conversion motor and the second frequency conversion motor can be led to rupture, and the
One frequency conversion motor, the second frequency conversion motor just cannot after the steelframe fracture being between the first frequency conversion motor and the second frequency conversion motor
Contacting each other is ensured by the steelframe that is between the first frequency conversion motor and the second frequency conversion motor, thus quilt cannot be ensured
Load head and the tail are synchronous, smoothly lifted.
Wherein, elevating mechanism also includes connecting shaft, and one end of connecting shaft is fixedly connected on the output shaft of the first frequency conversion motor,
The other end of connecting shaft is fixedly connected on the output shaft of the second frequency conversion motor.In this case, connecting shaft is in the first variable-frequency electric
First class of protection, and the steelframe being between the first frequency conversion motor, the second frequency conversion motor is increased between machine and the second frequency conversion motor
It is collectively forming second class protection, by increasing capacitance it is possible to increase the coupling stiffness between the first frequency conversion motor, the second frequency conversion motor, reduce due to first
Between frequency conversion motor, the second frequency conversion motor, the asynchronous steelframe causing to be between the first frequency conversion motor, the second frequency conversion motor is disconnected
The probability split.
Wherein, as | m1-m2| numerical value≤first threshold when, the first frequency conversion motor and the second variable-frequency electric described in continuous service
Machine.This situation represents, now the code value deviation very little of the encoder between the first frequency conversion motor and the second frequency conversion motor, always
Within the weight range that the steelframe being between the first frequency conversion motor, the second frequency conversion motor can bear, it is not result in be in
Steelframe fracture between first frequency conversion motor, the second frequency conversion motor.In the present embodiment, first threshold can be | m1-m2| numerical value
=32 (2.5mm).
Wherein, when first threshold ＜ | m1-m2| numerical value≤Second Threshold when, to m1、m2In the corresponding change of less numerical value
The control circuit transmitting control commands of frequency motor, increase m1、m2In the corresponding frequency conversion motor of less numerical value power, or fall
Low m1、m2In the larger corresponding frequency conversion motor of numerical value power, until | m1-m2| numerical value≤first threshold, continuous service
One frequency conversion motor, the second frequency conversion motor.This situation represents, now, works as l2When being forced to elongate, it is in the pulling force that connecting shaft is born
In the range of, in such a case, it is possible to using the traction action of connecting shaft itself, and control command makes this | m1-m2| numerical value
Again it revert in the range of first threshold, in the present embodiment, Second Threshold could be arranged to 64 (5mm).Additionally, it is now acceptable
Manually frequency conversion motor higher for code value in the first frequency conversion motor and the second frequency conversion motor is reduced, or, by the first frequency conversion
Frequency conversion motor that in motor and the second frequency conversion motor, code value is told somebody what one's real intentions are raises, with to the first frequency conversion motor, the second frequency conversion motor from
Ground level is calibrated, and makes their terrain clearances identical.
Wherein, as | m1-m2| numerical value ＞ Second Threshold when, simultaneously to the first frequency conversion motor, second frequency conversion motor send control
System order, makes the control circuit of the first frequency conversion motor, the control circuit dead electricity simultaneously of the second frequency conversion motor.In this case,
Be considered that the first frequency conversion motor and/or the second frequency conversion motor break down, continue to run with down final result be exactly to lead to
The pulling force that connecting shaft is born exceedes its tolerance range and ruptures.Accordingly, it would be desirable to make the control circuit of the first frequency conversion motor, the second change
The control circuit of frequency motor dead electricity simultaneously, stops it and continues to run with.
Wherein, | m1-m2| numerical value ＞ Second Threshold when, triggering alarm device send alarm.In this case, work as phase
After pass staff perceives associated alarm, the scene of can arriving in the very nick of time is sent out to the first frequency conversion motor and/or the second frequency conversion motor
Raw fault is processed such that it is able to fix a breakdown in the short period of time.The feelings of failure are particularly issued in control command
Under condition, can artificially control the control circuit of the first frequency conversion motor, the control circuit dead electricity simultaneously of the second frequency conversion motor.
Wherein, alarm is selected from one of buzzer, flashing lamp, qq message, SMS, wechat message, speech message
Or it is several.
Furthermore it is also possible to according to the first frequency conversion motor, the actual speed of the second frequency conversion motor and run time, calculate liter
The actual range of fall, but speed code-disc is to calculate, and precision is not high, only as auxiliary judgment condition, provides warning to behaviour
Make personnel.After two stroke distances that same motor calculation goes out are converted to same dimension, compare two deviation of strokes, exceed and set
Definite value is then reported to the police and is forbidden for code value, needs operator to calibrate.
Embodiment two
Referring to accompanying drawing 2, in the dicode value stroke amplitude limiter of the elevating mechanism that the embodiment of the present invention two provides, elevator
Structure includes the first frequency conversion motor, the second frequency conversion motor.The dicode value stroke amplitude limiter of elevating mechanism include order issuance unit,
The code value data acquisition unit of the first encoder, the code value data acquisition unit of second encoder, acquiring unit, judging unit.
Wherein, order issuance unit is used for sending and starting order to the first frequency conversion motor, the second frequency conversion motor simultaneously；First encoder
Code value data acquisition unit is used for code value data m of the encoder of collection the first frequency conversion motor1；The code value data of second encoder
Collecting unit is used for code value data m of the encoder of collection the second frequency conversion motor2；Acquiring unit is used for by obtaining | m1-
m2| numerical value；Judging unit is used for judging | m1-m2| numerical value and first threshold between magnitude relationship, as | m1-m2| numerical value
During≤first threshold, by order issuance unit continuous service the first frequency conversion motor, the second frequency conversion motor.
In the dicode value stroke amplitude limiter of the elevating mechanism that the present invention provides, elevating mechanism includes the first variable-frequency electric
Machine, the second frequency conversion motor.In this case, the sharing of load of thing will can be loaded to the first frequency conversion motor, the second frequency conversion
Motor, now, is minimized by the load of the first frequency conversion motor and the second frequency conversion motor alone bear, even if being loaded the weight of thing
Amount is very greatly it is also possible to ensure the first frequency conversion motor, the load of the second frequency conversion motor alone bear as far as possible.
Additionally, in the dicode value stroke amplitude limiter of elevating mechanism of present invention offer, also by the code of the first encoder
Value Data collecting unit gathers code value data m of the encoder of the first frequency conversion motor1, adopted by the code value data of second encoder
Collection unit gathers code value data m of the encoder of the second frequency conversion motor2, obtained by acquiring unit | m1-m2| numerical value, pass through
Judging unit judges | m1-m2| numerical value span, order issuance unit controls first according to the judged result of judging unit
Frequency conversion motor, the second frequency conversion motor are so that the terrain clearance of the first frequency conversion motor, the second frequency conversion motor is identical, therefore, it is possible to protect
Card is loaded thing head and the tail synchronization, is smoothly lifted.In fig. 3, label 201 represents the initial position of the first frequency conversion motor,
Label 301 represents the initial position of the second frequency conversion motor, label 401 represent be in the first frequency conversion motor and the second frequency conversion motor it
Between steelframe initial position, right | m1-m2| numerical value limited in the case of, the first frequency conversion motor is residing for t
Position should be label 203 location, and is in steelframe between the first frequency conversion motor and the second frequency conversion motor in t
Location should be label 403 location, and if do not limited | m1-m2| numerical value, the first frequency conversion motor of leaving,
The code value difference of the encoder of the second frequency conversion motor increases, and the stroke of the first frequency conversion motor, the second frequency conversion motor can be led to occur
Deviation, in fig. 3, label 202 represents the first frequency conversion motor location in moment t, and label 302 represents the second frequency conversion
Position described in moment t for the motor, label 402 represents that the steelframe being between the first frequency conversion motor and the second frequency conversion motor exists
State in which during moment t, according to Pythagorean theorem, now, bidding number 402 corresponding length are l2, the corresponding length of label 403
For l3, the corresponding length of label 404 is l4, then now,I.e. to the output shaft making the first frequency conversion motor
Spacing l and the output shaft of the second frequency conversion motor between2Increase, when the output shaft of the first frequency conversion motor and the second frequency conversion motor
Spacing l between output shaft2Increase above the steelframe being between the first frequency conversion motor and the second frequency conversion motor can bear
Pulling force when, the steelframe that can lead to be between the first frequency conversion motor and the second frequency conversion motor ruptures, and the first frequency conversion motor, the
Two frequency conversion motors just cannot be by being in first after the steelframe fracture being between the first frequency conversion motor and the second frequency conversion motor
Steelframe between frequency conversion motor and the second frequency conversion motor ensures contact each other, thus cannot ensure to be loaded thing head and the tail together
Walk, smoothly lifted.
Wherein, elevating mechanism also includes connecting shaft, and one end of connecting shaft is fixedly connected on the output shaft of the first frequency conversion motor,
The other end of connecting shaft is fixedly connected on the output shaft of the second frequency conversion motor.In this case, connecting shaft is in the first variable-frequency electric
First class of protection, and the steelframe being between the first frequency conversion motor, the second frequency conversion motor is increased between machine and the second frequency conversion motor
It is collectively forming second class protection, by increasing capacitance it is possible to increase the coupling stiffness between the first frequency conversion motor, the second frequency conversion motor, reduce due to first
Between frequency conversion motor, the second frequency conversion motor, the asynchronous steelframe causing to be between the first frequency conversion motor, the second frequency conversion motor is disconnected
The probability split.
Wherein, as | m1-m2| numerical value≤first threshold when, the first frequency conversion motor and the second variable-frequency electric described in continuous service
Machine.This situation represents, now the code value deviation very little of the encoder between the first frequency conversion motor and the second frequency conversion motor, always
Within the weight range that the steelframe being between the first frequency conversion motor, the second frequency conversion motor can bear, it is not result in be in
Steelframe fracture between first frequency conversion motor, the second frequency conversion motor.In the present embodiment, first threshold can be | m1-m2| numerical value
=32 (2.5mm).
Wherein, judging unit is additionally operable to judge | m1-m2| numerical value and Second Threshold between magnitude relationship, when the first threshold
Value ＜ | m1-m2| numerical value≤Second Threshold when, by order issuance unit to m1、m2In the corresponding variable-frequency electric of less numerical value
The control circuit transmitting control commands of machine, increase m1、m2In the corresponding frequency conversion motor of less numerical value power, or reduce m1、
m2In the larger corresponding frequency conversion motor of numerical value power, until | m1-m2| numerical value≤first threshold, continuous service first becomes
Frequency motor, the second frequency conversion motor.This situation represents, now, works as l2When being forced to elongate, it is in the weight range that connecting shaft is born
Interior, in such a case, it is possible to using the traction action of connecting shaft itself, and control command makes this | m1-m2| numerical value again
It revert in the range of first threshold, in the present embodiment, Second Threshold could be arranged to 64 (5mm).
Wherein, judging unit is additionally operable to judge | m1-m2| numerical value and Second Threshold between magnitude relationship, as | m1-m2|
Numerical value ＞ Second Threshold when, by order issuance unit simultaneously to the first frequency conversion motor, second frequency conversion motor send control life
Order, makes the control circuit of the first frequency conversion motor, the control circuit dead electricity simultaneously of the second frequency conversion motor.In this case it is believed that
The first frequency conversion motor and/or the second frequency conversion motor breaks down, continue to run with down final result be exactly to lead to connect
The pulling force that bearing is subject to exceedes its tolerance range and ruptures.Accordingly, it would be desirable to make the control circuit of the first frequency conversion motor, the second variable-frequency electric
The control circuit of machine dead electricity simultaneously, stops it and continues to run with.
Wherein, the dicode value stroke amplitude limiter of elevating mechanism also includes alarm device, when | m1-m2| numerical value ＞ second
During threshold value, alarm device is triggered by obviously issuance unit and sends alarm.In this case, when relevant staff perceives
After associated alarm, the fault that the scene of can arriving in the very nick of time occurs to the first frequency conversion motor and/or the second frequency conversion motor is processed,
So as to fix a breakdown in the short period of time.Particularly in the case that control command issues failure, can artificially control
Make the control circuit of the first frequency conversion motor, the control circuit dead electricity simultaneously of the second frequency conversion motor.
Wherein, alarm is selected from one of buzzer, flashing lamp, qq message, SMS, wechat message, speech message
Or it is several.
In the dicode value stroke amplitude limit method and device of the elevating mechanism that the present invention provides, elevating mechanism includes the first change
Frequency motor, the second frequency conversion motor.In this case, can by be loaded the sharing of load of thing to the first frequency conversion motor, second
Frequency conversion motor, now, is minimized by the load of the first frequency conversion motor and the second frequency conversion motor alone bear, even if being loaded thing
Weight very big it is also possible to ensure the first frequency conversion motor, the load of the second frequency conversion motor alone bear as far as possible.
Additionally, in the dicode value stroke amplitude limit method of elevating mechanism of present invention offer and device, being also directed to the first frequency conversion
Code value data m of the encoder of motor1, the second frequency conversion motor encoder code value data m2Obtain | m1-m2| numerical value, control
System is described | m1-m2| numerical value span so that the terrain clearance of described first frequency conversion motor, the second frequency conversion motor is identical.
In this case, because the terrain clearance of the first frequency conversion motor, the second frequency conversion motor is identical, thereby it is ensured that being loaded
Thing head and the tail are synchronous, smoothly lifted.And if do not limited | m1-m2| numerical value, the first frequency conversion motor of leaving, the second variable-frequency electric
The code value difference of the encoder of machine increases, and the first frequency conversion motor, the stroke of the second frequency conversion motor can be led to deviation so that the
Spacing between the output shaft of the output shaft of one frequency conversion motor and the second frequency conversion motor increases, when the output shaft of the first frequency conversion motor
The spacing and output shaft of the second frequency conversion motor between increases above when being loaded pulling force that thing can bear, can lead to be added
Loading is ruptured.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to including excellent
Select embodiment and fall into being had altered and changing of the scope of the invention.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprise these changes and modification.
Claims (10)
1. a kind of dicode value stroke amplitude limit method of elevating mechanism is it is characterised in that described elevating mechanism includes the first variable-frequency electric
Machine, the second frequency conversion motor；The dicode value stroke amplitude limit method of described elevating mechanism comprises the following steps:
Described first frequency conversion motor, the second frequency conversion motor receive startup order simultaneously；
In described first frequency conversion motor, the second frequency conversion motor running, the coding of the first frequency conversion motor described in Real-time Collection
Code value data m of device1, the second frequency conversion motor encoder code value data m2；
Obtain | m1-m2| numerical value；
Control described | m1-m2| numerical value span so that the liftoff height of described first frequency conversion motor, the second frequency conversion motor
Degree is identical.
2. the dicode value stroke amplitude limit method of elevating mechanism according to claim 1 is it is characterised in that described elevating mechanism
Also include connecting shaft, one end of described connecting shaft is fixedly connected on the output shaft of described first frequency conversion motor, described connecting shaft
The other end is fixedly connected on the output shaft of described second frequency conversion motor.
3. the dicode value stroke amplitude limit method of elevating mechanism according to claim 1 is it is characterised in that work as | m1-m2| number
During value≤first threshold, the first frequency conversion motor described in continuous service and the second frequency conversion motor；
Preferably, working as first threshold ＜ | m1-m2| numerical value≤Second Threshold when, to m1、m2In the corresponding change of less numerical value
The control circuit transmitting control commands of frequency motor, increase m1、m2In the corresponding frequency conversion motor of less numerical value power, or fall
Low m1、m2In the larger corresponding frequency conversion motor of numerical value power, until | m1-m2| numerical value≤first threshold, continuous service institute
State the first frequency conversion motor, the second frequency conversion motor；
Preferably, working as | m1-m2| numerical value ＞ Second Threshold when, send out to described first frequency conversion motor, the second frequency conversion motor simultaneously
Send control command, make the control circuit of described first frequency conversion motor, the control circuit dead electricity simultaneously of the second frequency conversion motor.
4. elevating mechanism according to claim 1 dicode value stroke amplitude limit method it is characterised in that | m1-m2| numerical value
During ＞ Second Threshold, triggering alarm device sends alarm.
5. the dicode value stroke amplitude limit method of elevating mechanism according to claim 4 is it is characterised in that described alarm is selected from
One of buzzer, flashing lamp, qq message, SMS, wechat message, speech message or several.
6. a kind of dicode value stroke amplitude limiter of elevating mechanism is it is characterised in that described elevating mechanism includes the first variable-frequency electric
Machine, the second frequency conversion motor；
The dicode value stroke amplitude limiter of described elevating mechanism includes the code value data acquisition of order issuance unit, the first encoder
Unit, the code value data acquisition unit of second encoder, acquiring unit, judging unit；
Described order issuance unit is used for sending and starting order to described first frequency conversion motor, the second frequency conversion motor simultaneously；
The code value data acquisition unit of described first encoder is used for gathering the code value number of the encoder of described first frequency conversion motor
According to m1；
The code value data acquisition unit of described second encoder is used for gathering the code value number of the encoder of described second frequency conversion motor
According to m2；
Described acquiring unit is used for by obtaining | m1-m2| numerical value；
Described judging unit is used for judging | m1-m2| numerical value span, described order issuance unit according to described judge single
The judged result of unit controls described first frequency conversion motor, the second frequency conversion motor so that described first frequency conversion motor, the second variable-frequency electric
The terrain clearance of machine is identical.
7. the dicode value stroke amplitude limiter of elevating mechanism according to claim 6 is it is characterised in that described elevating mechanism
Also include connecting shaft, one end of described connecting shaft is fixedly connected on the output shaft of described first frequency conversion motor, described connecting shaft
The other end is fixedly connected on the output shaft of described second frequency conversion motor.
8. the dicode value stroke amplitude limiter of elevating mechanism according to claim 6 is it is characterised in that work as | m1-m2| number
During value≤first threshold, described judging unit by the first frequency conversion motor described in described order issuance unit continuous service, second
Frequency conversion motor；
Preferably, working as first threshold ＜ | m1-m2| numerical value≤Second Threshold when, by described order issuance unit to m1、m2
In the corresponding frequency conversion motor of less numerical value control circuit transmitting control commands, increase m1、m2In the corresponding change of less numerical value
The power of frequency motor, or reduce m1、m2In the larger corresponding frequency conversion motor of numerical value power, until | m1-m2| numerical value≤
First threshold, the first frequency conversion motor, the second frequency conversion motor described in continuous service；
Preferably, working as | m1-m2| numerical value ＞ Second Threshold when, by described order issuance unit simultaneously to described first change
Frequency motor, the second frequency conversion motor transmitting control commands, make control circuit, the control of the second frequency conversion motor of described first frequency conversion motor
Circuit processed dead electricity simultaneously.
9. the dicode value stroke amplitude limiter of elevating mechanism according to claim 6 is it is characterised in that also include dress of reporting to the police
Put, when | m1-m2| numerical value ＞ Second Threshold when, described by described order issuance unit trigger described alarm device send police
Report.
10. the dicode value stroke amplitude limiter of elevating mechanism according to claim 9 is it is characterised in that described alarm is selected
From one of buzzer, flashing lamp, qq message, SMS, wechat message, speech message or several.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049490A (en) * | 2019-06-06 | 2020-12-08 | 北京首钢自动化信息技术有限公司 | Multi-motor synchronous control method for lifting mechanism of comb tooth carrier of stereo garage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0820495A (en) * | 1994-07-06 | 1996-01-23 | Daifuku Co Ltd | Lift device |
| CN101704473A (en) * | 2009-11-11 | 2010-05-12 | 甘肃省电力公司刘家峡水电厂 | Main lifting parallel operation height balance correcting system of 400-ton bridge crane |
| CN101949469A (en) * | 2010-09-27 | 2011-01-19 | 中国葛洲坝集团机械船舶有限公司 | Electrical synchronized method and device of hoist with two hoisting points |
| CN102992220A (en) * | 2012-12-14 | 2013-03-27 | 中联重科股份有限公司 | Method, device and system for synchronous control of winches, and multi-winch single-hook type crane |
| CN103776625A (en) * | 2014-01-27 | 2014-05-07 | 中国神华能源股份有限公司 | Method and system for detecting faults of loads of driving device of telescopic mechanism |
| CN104229671A (en) * | 2014-09-16 | 2014-12-24 | 北京铁道工程机电技术研究所有限公司 | Automatic deviation rectification control method and system for fixed car lifting jack |
-
2016
- 2016-08-31 CN CN201610798517.9A patent/CN106365064B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0820495A (en) * | 1994-07-06 | 1996-01-23 | Daifuku Co Ltd | Lift device |
| CN101704473A (en) * | 2009-11-11 | 2010-05-12 | 甘肃省电力公司刘家峡水电厂 | Main lifting parallel operation height balance correcting system of 400-ton bridge crane |
| CN101949469A (en) * | 2010-09-27 | 2011-01-19 | 中国葛洲坝集团机械船舶有限公司 | Electrical synchronized method and device of hoist with two hoisting points |
| CN102992220A (en) * | 2012-12-14 | 2013-03-27 | 中联重科股份有限公司 | Method, device and system for synchronous control of winches, and multi-winch single-hook type crane |
| CN103776625A (en) * | 2014-01-27 | 2014-05-07 | 中国神华能源股份有限公司 | Method and system for detecting faults of loads of driving device of telescopic mechanism |
| CN104229671A (en) * | 2014-09-16 | 2014-12-24 | 北京铁道工程机电技术研究所有限公司 | Automatic deviation rectification control method and system for fixed car lifting jack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049490A (en) * | 2019-06-06 | 2020-12-08 | 北京首钢自动化信息技术有限公司 | Multi-motor synchronous control method for lifting mechanism of comb tooth carrier of stereo garage |
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| CN106365064B (en) | 2020-01-21 |
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