CN104210976B - Elevator steel cable loads stroke detecting method and system and winch control mechanism - Google Patents
Elevator steel cable loads stroke detecting method and system and winch control mechanism Download PDFInfo
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- CN104210976B CN104210976B CN201410407225.9A CN201410407225A CN104210976B CN 104210976 B CN104210976 B CN 104210976B CN 201410407225 A CN201410407225 A CN 201410407225A CN 104210976 B CN104210976 B CN 104210976B
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Abstract
Elevator steel cable load stroke detecting method, first carry out initialization step acquisition elevator steel cable includes reference position, benchmark upward stroke and the reference information of benchmark descending stroke.That then detects acquisition elevator steel cable includes current location, stress value and the current information of stress moving direction.State is carried then according to stress value acquiring size band, when elevator steel cable is for load, first calculating accumulative load stroke according to reference information and current information, adding up load stroke is currently to add up upward stroke and current accumulative descending stroke sum, then carries out reference information renewal step；When elevator steel cable is unloaded, directly carries out reference information and update step.Store current location and result of calculation afterwards and demonstrate current location and result of calculation.This elevator steel cable load stroke detecting method can judge the accumulative load stroke of elevator steel cable, with the actual life of accurate characterization elevator steel cable.The invention still further relates to elevator steel cable load stroke detection system and winch control device.
Description
Technical field
The present invention relates to fairleader technical field, particularly to a kind of elevator steel cable load stroke
Detection method, elevator steel cable load stroke detection system and winch control mechanism.
Background technology
In engineering machinery field, winding plant is a kind of widely used lifting mechanism, and it passes through
The movement rotating drive elevator steel cable of reel, thus realize the lifting functions of engineering machinery.Its
In, elevator steel cable usually can be lost because of friction or winding disorder cable.In order to consider an elevator steel
The actual life of rope, it is to be appreciated that the pay(useful) load stroke of elevator steel cable.
Existing elevator steel cable stroke detection system is to utilize the encoder being arranged on winching barrel,
The angle information of detection winching barrel, then recycling message handler combines other structural parameters
(number of turns of such as elevator steel cable and the radius of winching barrel) is by the angle information of winching barrel
It is converted into the positional information of elevator steel cable, thus calculates elevator steel cable in certain time period
Relative displacement.If by programmable logic controller ((Programmable Logic
Controller, PLC) realize Zero positioning and power down preservation function, it is also possible to obtain further
The absolute displacement values of elevator steel cable.
But, the detection elevator steel cable that existing elevator steel cable stroke detection system can only be simple
Position and its distance moved, can not judge that whether band carries elevator steel cable, more cannot obtain
To the elevator steel cable accumulative load shift motion during moving up and down repeatedly, therefore, nothing
Method judges the actual life of elevator steel cable.
Summary of the invention
It is an object of the invention to, it is provided that a kind of elevator steel cable load stroke detecting method, its
It is capable of detecting when whether elevator steel cable loads, and calculates the accumulative load stroke of elevator steel cable,
Actual life with accurate characterization elevator steel cable.
Another object of the present invention is to, it is provided that a kind of elevator steel cable load stroke detection system,
It is capable of detecting when whether elevator steel cable loads, and can calculate the accumulative load row of elevator steel cable
Journey, with the actual life of accurate characterization elevator steel cable.
It is a further object of the present invention to provide a kind of winch control mechanism, it can detect
Go out whether elevator steel cable loads, and calculate the accumulative load stroke of elevator steel cable, with accurate table
Levy the actual life of elevator steel cable.
The present invention solves it and technical problem is that what the following technical scheme of employing realized.
A kind of elevator steel cable load stroke detecting method, is adapted to detect for the accumulative load of elevator steel cable
Stroke, elevator steel cable load stroke detecting method includes: first carry out initialization step to obtain
The reference information of elevator steel cable, its reference information includes reference position, benchmark upward stroke and base
Quasi-descending stroke.Then detection obtains the current information of elevator steel cable, and its current information includes working as
Front position, stress value and stress moving direction.Whether elevator steel cable is judged then according to stress value
Load, to obtain load condition.When the load condition of elevator steel cable is for load, first according to base
Level is put, current location, stress moving direction, benchmark upward stroke and benchmark descending stroke meter
Calculate accumulative load stroke, this accumulative load stroke be currently add up upward stroke and current accumulative under
Fall stroke sum.Carrying out reference information again and update step, the reference position after renewal is present bit
Putting, the benchmark upward stroke after renewal is current accumulative upward stroke, and the benchmark after renewal declines
Stroke is current accumulative descending stroke.When the load condition of elevator steel cable is unloaded, the most directly
Carrying out reference information and update step, the reference position after renewal is current location, the base after renewal
Quasi-upward stroke still on the basis of upward stroke, the benchmark descending stroke after renewal still on the basis of decline
Stroke.Store this current location, current accumulative upward stroke or benchmark upward stroke afterwards and work as
Front accumulative descending stroke or benchmark descending stroke.The finally current accumulative upward stroke of display, current
Accumulative descending stroke, accumulative load stroke, current information and load condition.
In the preferred embodiment, above-mentioned judge whether this steel cable loads according to stress value
Including: compare stress value and default stress threshold value, when stress value is more than default stress threshold value,
Be judged to the load condition of elevator steel cable for load, when stress value is less than or equal to presetting stress threshold
During value, it is determined that the load condition for elevator steel cable is unloaded.
In the preferred embodiment, above-mentioned detection obtains the current information bag of elevator steel cable
Include: utilizing load cell to obtain stress value, utilization orientation sensor obtains stress moving direction,
And utilize displacement transducer to obtain current location.
In the preferred embodiment, above-mentioned according to reference position, current location, stress
Moving direction, benchmark upward stroke and benchmark descending stroke calculate accumulative load stroke and include: root
Judge whether elevator steel cable moves according to stress moving direction and current location, to obtain jacking condition,
When the jacking condition of elevator steel cable is for rising, calculate the current location difference with reference position
Absolute value currently rises displacement as elevator steel cable, and current accumulative upward stroke is current
Rise displacement and benchmark upward stroke sum, when the jacking condition of elevator steel cable is for declining,
What the absolute value of the difference calculating current location and reference position made elevator steel cable currently declines movement
Distance, current accumulative descending stroke is current decline displacement and benchmark descending stroke sum.
A kind of elevator steel cable load stroke detection system, is adapted to detect for the accumulative load of elevator steel cable
Stroke, elevator steel cable load stroke detection system includes: detector unit, control unit and display
Unit.Detector unit detection obtains the current information of elevator steel cable, and current information includes present bit
Put, stress value and stress moving direction.Control unit receives the current information from detector unit,
Control unit includes initialization module, load judgment module, climb displacement module, memory module.
This initialization module carries out initialization step, obtains the reference information of elevator steel cable from memory module,
Reference information includes reference position, benchmark upward stroke and benchmark descending stroke, load judgment mould
According to stress value, block judges whether steel cable loads, to obtain load condition.When bearing of elevator steel cable
When load state is for load, climb displacement module moves according to reference position, current location, stress
Direction, benchmark upward stroke and benchmark descending stroke calculate accumulative load stroke, accumulative load row
Journey is currently to add up upward stroke and current accumulative descending stroke sum.And memory module stores and works as
Front position, current accumulative upward stroke and current accumulative descending stroke are updated reference information.
When the load condition of elevator steel cable is unloaded, memory module directly stores current location, benchmark
Upward stroke, benchmark descending stroke are updated reference information.Display unit shows current accumulative
Upward stroke, currently add up descending stroke, accumulative load stroke, current information and load condition.
In the preferred embodiment, above-mentioned load judgment module is provided with default stress threshold value,
And by comparing the load condition of stress value and default stress threshold decision elevator steel cable, work as stress
Value is more than when presetting stress threshold value, it is determined that the load condition for elevator steel cable is load, works as stress
Value is less than or equal to when presetting stress threshold value, it is determined that the load condition for elevator steel cable is unloaded.
In the preferred embodiment, above-mentioned detector unit includes being connected to elevator steel cable
Load cell, direction sensor and displacement transducer, load cell obtains stress value, side
Obtaining stress moving direction to sensor, displacement transducer obtains current location.
In the preferred embodiment, above-mentioned detector unit includes being connected to elevator steel cable
Load cell and the rotary photoelectric encoder being connected to winching barrel, load cell obtains and is subject to
Force value, rotary photoelectric encoder obtains angle information and the stress moving direction of winching barrel, enters
And calculate acquisition current location.
In the preferred embodiment, above-mentioned climb displacement module includes lifting judge module
With statistical computation module.Lifting judge module judges volume according to stress moving direction and current location
Raise whether steel cable moves, to obtain jacking condition.When the jacking condition of elevator steel cable is for rising,
Statistical computation module calculates the current location absolute value with the difference of reference position as elevator steel cable
Currently rise displacement, and calculate and current rise displacement and benchmark upward stroke sum
As current accumulative upward stroke.When the jacking condition of elevator steel cable is for declining, statistical computation
Module calculate current location and the absolute value of the difference of reference position as elevator steel cable when front lower
Fall displacement, and calculate current displacement and the benchmark descending stroke sum of declining as currently
Add up descending stroke, under statistical computation module also calculates current accumulative upward stroke and currently adds up
Fall stroke sum is as accumulative load stroke.
A kind of winch control mechanism, it includes above-mentioned elevator steel cable load stroke detection system.
The present invention elevator steel cable load stroke detection system and method and have elevator steel cable bear
Carry the winch control mechanism of stroke detection system, the elevator steel cable obtained by detector unit detection
Include current location, stress value and the current information of stress moving direction, pass through control unit
Receive the current information from detector unit, and utilize the initialization module of control unit, load
Judge module, climb displacement module and memory module carry out collaborative judgement and process, when elevator steel
When the load condition of rope is for load, the benchmark letter that climb displacement module obtains according to initialization module
Breath and current information calculate current accumulative upward stroke and current accumulative descending stroke, and will be current
Accumulative upward stroke is cumulative with current accumulative descending stroke i.e. can obtain accumulative load stroke, goes forward side by side
Row reference information updates step；When the load condition of elevator steel cable is unloaded, the most directly carry out
Reference information updates step.Therefore, the loading condition of the elevator steel cable display by display unit
Just can be apparent from, especially, can be by the accumulative load row of calculated elevator steel cable
The actual life that journey characterizes, and then judge whether to need to change elevator steel cable.
Described above is only the general introduction of technical solution of the present invention, in order to better understand this
Bright technological means, and can be practiced according to the content of specification, and in order to allow the present invention
Above and other objects, features and advantages can become apparent, below especially exemplified by preferably implementing
Example, and coordinate accompanying drawing, describe in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the elevator steel cable load stroke detection system of one embodiment of the invention
Figure.
Fig. 2 is the control unit of the elevator steel cable load stroke detection system of one embodiment of the invention
Structural representation.
Fig. 3 is the schematic flow sheet of the elevator steel cable load stroke detecting method of the present invention.
Detailed description of the invention
By further illustrate technological means that the present invention taked by reaching predetermined goal of the invention and
Effect, below in conjunction with accompanying drawing and preferred embodiment, bears the elevator steel cable proposed according to the present invention
Carry the concrete of stroke detecting method, elevator steel cable load stroke detection system and winch control mechanism
Embodiment, structure, feature and effect thereof, describe in detail as follows.
For the present invention aforementioned and other technology contents, feature and effect, coordinate ginseng following
Examine in the detailed description of graphic preferred embodiment and can clearly appear from.Pass through detailed description of the invention
Explanation, when technological means and the effect can taked the present invention by reaching predetermined purpose is able to
More go deep into and concrete understanding, but institute's accompanying drawings is only to provide reference and purposes of discussion, and
The present invention is any limitation as by non-being used for.
Fig. 1 is the structural representation of the elevator steel cable load stroke detection system of one embodiment of the invention
Figure.As it is shown in figure 1, elevator steel cable load stroke detection system 100 include detector unit 110,
Control unit 120 and display unit 130.
Specifically, as it is shown in figure 1, detector unit 110 obtains working as of elevator steel cable for detecting
Front information, current information includes current location, stress value and stress moving direction.The present embodiment
In, detector unit 110 includes being connected to the load cell 112 of elevator steel cable, direction sensing
Device 114 and displacement transducer 116, wherein, load cell 112 is used for detecting elevator steel cable
By force information, thus obtain the stress value of elevator steel cable.Direction sensor 114 is used for detecting
The stress mobile message of elevator steel cable, thus obtain the stress moving direction of elevator steel cable.Displacement
Sensor 116 detects the displacement information of elevator steel cable, thus obtains the current location of elevator steel cable.
The current location of elevator steel cable, stress value and the stress that detection obtains is moved by detector unit 110
The current informations such as direction are sent to control unit 120.It is noted that detector unit 110
Direction sensor 114 and displacement transducer 116 also can replace with rotary photoelectric encoder.Rotation
Turn photoelectric encoder to may be provided on winding reel, and can obtain the angle information of winding reel with
And the stress moving direction of elevator steel cable, and the circle being wrapped on winding reel according to elevator steel cable
The stress moving direction of number and the angle information of winding reel and elevator steel cable can calculate and make the test
Raising the current location of steel cable, concrete calculating is to it is well known that skill, does not repeats them here.
Therefore, in other embodiments, by being arranged on the cooperation of winding reel rotary photoelectric encoder even
The load cell 112 being connected to elevator steel cable also can obtain the current information of elevator steel cable.
Fig. 2 be one embodiment of the invention elevator steel cable load stroke detection system control list
The structural representation of unit.As in figure 2 it is shown, control unit 120 is for receiving from detector unit
The current information of 110 is further processed and is calculated.In the present embodiment, control unit 120
Including initialization module 122, load judgment module 124, climb displacement module 126 and storage mould
Block 128.
Initialization module 122 is used for carrying out initialization process, when elevator steel cable loads stroke detection
After system 100 energising, reference position current for elevator steel cable is set to zero by initialization module 122,
The reference information of memory module 128 storage when simultaneously reading last power-off, such as reference position,
Benchmark upward stroke and benchmark descending stroke are as the reference information of elevator steel cable.
Load judgment module 124 receives being subject to of the load cell 112 from detector unit 110
Force value, judges the whether load of elevator steel cable, to obtain load condition according to stress value.Load
Judge module 124 is provided with default stress threshold value, by comparing stress value and default stress threshold value
Size judges the load condition of elevator steel cable.When stress value is more than when presetting stress threshold value, it is determined that
Load condition for elevator steel cable is load, when stress value is less than or equal to default stress threshold value,
It is judged to that the load condition of elevator steel cable is for unloaded.It is noted that such as churning driven
The default stress threshold value of machine is the weight from drill rod boring tool, when determining default stress threshold value, in advance
If stress threshold value can be drill rod boring tool weight sum is multiplied by proportionality coefficient, general proportionality coefficient scope
Between 0～0.5.The most different default stress threshold values of work apparatus institute is different, concrete condition
Concrete setting.
Holding above-mentioned, climb displacement module 126 receives the load shape from load judgment module 124
State, from the current information of detector unit 110 and the reference information of initialization module 122,
Carry out processing and calculating stroke.In the present embodiment, climb displacement module 126 includes that lifting judges
Module 1262 and statistical computation module 1264, lifting judge module 1262 is according to the stress side of movement
Judge whether elevator steel cable moves to current location, to obtain jacking condition.Sentence according to load
The load condition of disconnected module 124 elevator steel cable is load, and simultaneously according to lifting judge module
When the jacking condition of 1262 elevator steel cables is for rising, according to the reference position of elevator steel cable, current
Position, stress moving direction, benchmark upward stroke and benchmark descending stroke calculate elevator steel cable
Accumulative load stroke.Specifically, statistical computation module 1264 calculates current location and reference position
The absolute value of difference obtain elevator steel cable currently rise displacement, and calculate current rising
Displacement and benchmark upward stroke sum obtain current accumulative upward stroke.In like manner, according to negative
The load condition carrying judge module 124 elevator steel cable is load, and judges mould according to lifting simultaneously
When the jacking condition of block 1262 elevator steel cable is for declining, according to the reference position of elevator steel cable, when
It is accumulative negative that front position, stress moving direction, benchmark upward stroke and benchmark descending stroke calculate this
Carry stroke.Specifically, statistical computation module 1264 calculates the difference of current location and reference position
Absolute value obtain elevator steel cable currently decline displacement, and calculate current decline mobile away from
Current accumulative descending stroke is obtained from benchmark descending stroke sum.Statistical computation module 1264
Again the current accumulative upward stroke obtained is summed up the most available with current accumulative descending stroke
The accumulative load stroke of elevator steel cable.Climb displacement module 126 is by calculated current accumulative
The current location of upward stroke, current accumulative descending stroke and elevator steel cable is directly stored in control
The memory module 128 of unit 120 processed, the reference information of now memory module 128 storage is carried out
Updating, the reference position after renewal is current location, and benchmark upward stroke after renewal is for working as
Front accumulative upward stroke, the benchmark descending stroke after renewal is current accumulative descending stroke, that is,
Owing to the load condition of elevator steel cable is load, in memory module 128, the benchmark of storage rises row
Journey and benchmark descending stroke have carried out the change of cumulative stroke.The benchmark of memory module 128 rises
Stroke and benchmark descending stroke can be as the benchmark upward stroke of the work of elevator steel cable next time and bases
The reference information of quasi-descending stroke.
Additionally, when the load condition of elevator steel cable is unloaded, climb displacement module 126 is not entered
Row climb displacement, but memory module 128 directly stores renewal reference information, the base after renewal
It is the current location of the elevator steel cable from detector unit 110 that level is put, on the benchmark after renewal
Rising stroke is still benchmark upward stroke before, and the benchmark descending stroke after renewal is still before
Benchmark descending stroke, that is, owing to the load condition of elevator steel cable is unloaded, memory module 128
The benchmark upward stroke of middle storage and benchmark descending stroke be not for changing.
Display unit 130 receives the climb displacement mould from control unit 120 by CAN
Current accumulative upward stroke that block 126 calculates, currently add up descending stroke, accumulative load
Stroke, and show.Detection is may also receive from by CAN display unit 130
The current information of the elevator steel cable that unit 110 detects and load condition etc., and show.
Additionally, display unit 130 can also show early warning information etc..
Tire out employing elevator steel cable load stroke detection system 100 is detected elevator steel cable below
The detection method of meter load stroke is described further.Fig. 3 is the elevator steel cable load of the present invention
The schematic flow sheet of stroke detecting method.Combining Fig. 2 and Fig. 3 the most in the lump, elevator steel cable loads
Stroke detecting method comprises the steps.
First, utilize the initialization module 122 of control unit 120 to carry out initialization step, with
Obtain the reference information of elevator steel cable.That is, when elevator steel cable loads stroke detection system 100
After energising, reference position current for elevator steel cable is set to zero by initialization module 122, reads simultaneously
Reference position, benchmark upward stroke and the base stored in memory module 128 when taking last power-off
Quasi-descending stroke.Therefore, reference information includes that the reference position of elevator steel cable, benchmark rise row
Journey and benchmark descending stroke.
Then, detector unit 110 detection is utilized to obtain the current information of elevator steel cable.Specifically,
The displacement transducer 116 detection detection utilizing detector unit 110 obtains the present bit of elevator steel cable
The load cell 112 putting, utilizing detector unit 110 detects the stress value of elevator steel cable, profit
The stress moving direction of elevator steel cable is detected with the direction sensor 114 of detector unit 110.Cause
This, current information includes the current location of elevator steel cable, stress value and stress moving direction.
Then, the load judgment unit 124 utilizing control unit 120 judges volume according to stress value
Raise whether steel cable loads, to obtain load condition.Specifically, it is subject to according to set in advance presetting
Power threshold value and stress value size judge the whether load of elevator steel cable, to obtain load condition.
When stress value is more than judging when presetting stress threshold value that the load condition of elevator steel cable, as loading, and is worked as
When the load condition of elevator steel cable is for load, the climb displacement module of recycling control unit 120
The lifting judge module 1262 of 126, according to elevator steel cable stress moving direction and current location, is sentenced
Whether disconnected elevator steel cable moves, to obtain jacking condition.When the load condition of elevator steel cable is negative
When the jacking condition of load and simultaneously elevator steel cable is for rising, utilize the stroke counter of control unit 120
The statistical computation module 1264 calculating module 126 calculates the exhausted of current location and the difference of reference position
What value obtained elevator steel cable currently rises displacement, and calculate current rise displacement with
Benchmark upward stroke sum obtains current accumulative upward stroke.When the load condition of elevator steel cable is
When the jacking condition of load and simultaneously elevator steel cable is for declining, utilize the stroke of control unit 120
The statistical computation module 1264 of computing module 126 calculates the current location difference with reference position
What absolute value obtained elevator steel cable currently declines displacement, and calculates and currently decline displacement
Current accumulative descending stroke is obtained with benchmark descending stroke sum.Afterwards, statistical computation module
1264 will calculate current accumulative upward stroke and current accumulative descending stroke sum, i.e. can be rolled up
Raise steel cable accumulative load stroke.
Afterwards, the current accumulative upward stroke calculated above-mentioned, current accumulative descending stroke and
The current location of elevator steel cable is directly stored in the memory module 128 of control unit 120 and carries out base
The renewal of calibration information.Reference position after renewal is current location, and the benchmark after renewal rises row
Journey is current accumulative upward stroke, and the benchmark descending stroke after renewal is current accumulative descending stroke,
That is, owing to the load condition of elevator steel cable is load, the benchmark of storage in memory module 128
Upward stroke and benchmark descending stroke have carried out the change of cumulative stroke.The base of memory module 128
Quasi-upward stroke and benchmark descending stroke can rise row as the benchmark of the work of elevator steel cable next time
Journey and the reference information of benchmark descending stroke.When stress value is less than or equal to when presetting stress threshold value
Judge the load condition of elevator steel cable as time unloaded, climb displacement module 126 does not carry out stroke counter
Calculating, memory module 128 directly stores the current location of elevator steel cable, benchmark upward stroke, base
Quasi-descending stroke is updated reference information.Reference position after renewal is from detector unit
The current location of the elevator steel cable of 110, the benchmark upward stroke after renewal is still benchmark before
Upward stroke, the benchmark descending stroke after renewal is still benchmark descending stroke before, that is, by
Load condition in elevator steel cable is unloaded, the benchmark upward stroke of storage in memory module 128
With benchmark descending stroke not for changing.
Finally, display unit 130 is utilized to be received from control unit 120 by CAN
Current accumulative upward stroke that climb displacement module 126 calculates, currently add up descending stroke,
Accumulative load stroke, and show.And can also be received by CAN display unit 130
The current information of the elevator steel cable detected from detector unit 110 and load condition etc., go forward side by side
Row display.Additionally, display unit 130 can also show early warning information etc..
Elevator steel cable load stroke detection system 100 can be applicable to winch control mechanism, mainly uses
In the accumulative load stroke of detection elevator steel cable, and judge to characterize the reality of elevator steel cable by this parameter
Border service life.And, elevator steel cable load stroke detection system 100 is at winch control mechanism
Elevator steel cable load stroke detection system need not do big change and can realize, cost of manufacture
Low.
The elevator steel cable of the present invention loads stroke detection system 100 and method and has elevator steel
The winch control mechanism of rope load stroke detection system 100.Elevator steel cable loads stroke detection system
System 100 is obtained the current location of elevator steel cable, stress value by detector unit 110 detection and is subject to
The current information of power moving direction, is received from detector unit 110 by control unit 120
Current information, and utilize the initialization module 122 of control unit 110, load judgment module 124,
Climb displacement module 126 and memory module 128 carry out collaborative judgement and process.When elevator steel cable
Load condition for load time, climb displacement module 126 obtains according to initialization module 122
Reference position, current location, stress moving direction, benchmark upward stroke and benchmark descending stroke
Calculate current accumulative upward stroke and current accumulative descending stroke, and will currently add up to rise row
Journey is cumulative with current accumulative descending stroke i.e. can obtain accumulative load stroke, and carries out reference information
Update step, when the load condition of elevator steel cable is unloaded, the most directly carry out reference information more
New step.The result of calculation of control unit 120 and the current location of elevator steel cable are by display
Unit 130 shows, therefore, staff can clearly understand from display unit 130
To the loading condition of elevator steel cable, and the accumulative load stroke of elevator steel cable, so that work people
Member can characterize service life actual life of elevator steel cable by accumulative load stroke, enters
And judge whether to need to change elevator steel cable.Additionally, display unit 130 can also show early warning
Information etc., can remind staff to prevent the generation of emergency in time.
Retouch the preferred embodiment of the present invention above in association with accompanying drawing in detail, but the present invention is not
It is limited to the detail in above-mentioned embodiment, in the technology concept of the present invention, permissible
Technical scheme is carried out multiple simple variant, and these simple variant belong to the present invention
Protection domain.Each concrete technical characteristic described in above-mentioned detailed description of the invention,
In the case of reconcilable, can be combined by any suitable means.In order to avoid need not
The repetition wanted, various possible combinations are illustrated by the present invention the most separately.
Claims (10)
1. an elevator steel cable load stroke detecting method, is adapted to detect for the accumulative negative of elevator steel cable
Carry stroke, it is characterised in that comprising:
Carry out initialization step, to obtain the reference information of this elevator steel cable, this reference information bag
Include reference position, benchmark upward stroke and benchmark descending stroke；
Detection obtains the current information of this elevator steel cable, and this current information includes current location, is subject to
Force value and stress moving direction；
Judge whether this elevator steel cable loads according to this stress value, to obtain load condition, when this
When this load condition of elevator steel cable is for load, first according to this reference position, this current location,
This stress moving direction, this benchmark upward stroke and this benchmark descending stroke calculate this accumulative load
Stroke, this accumulative load stroke is currently to add up upward stroke and current accumulative descending stroke sum,
Carrying out reference information again and update step, this reference position after renewal is this current location, updates
After this benchmark upward stroke be this currently accumulative upward stroke, this benchmark after renewal declines row
Journey is this most accumulative descending stroke, when this load condition of this elevator steel cable is unloaded, then
Directly carrying out this reference information and update step, this reference position after renewal is this current location,
This benchmark upward stroke after renewal is still this benchmark upward stroke, and this benchmark after renewal declines
Stroke is still this benchmark descending stroke；
Store this current location, this currently add up upward stroke or this benchmark upward stroke and deserve
Front accumulative descending stroke or this benchmark descending stroke；And
Show this currently accumulative upward stroke, this currently add up descending stroke, this accumulative load row
Journey, this current information and this load condition.
2. elevator steel cable load stroke detecting method as claimed in claim 1, it is characterised in that
Judge whether this steel cable loads according to this stress value to include: compare this stress value and default stress threshold
Value, when this stress value is more than this default stress threshold value, it is determined that for this load of this elevator steel cable
State is load, when this stress value is less than or equal to this default stress threshold value, it is determined that for this volume
This load condition raising steel cable is zero load.
3. elevator steel cable load stroke detecting method as claimed in claim 1, it is characterised in that
Detection obtains this current information of this elevator steel cable and includes: utilize load cell to obtain this stress
Value, utilization orientation sensor obtains this stress moving direction, and utilizes displacement transducer acquisition to be somebody's turn to do
Current location.
4. elevator steel cable load stroke detecting method as claimed in claim 1, it is characterised in that
According to this reference position, this current location, this stress moving direction, this benchmark upward stroke and
This benchmark descending stroke calculates this accumulative load stroke and includes: according to this stress moving direction and should
Current location judges whether this elevator steel cable moves, to obtain jacking condition, when this elevator steel cable
This jacking condition for rising time, calculate the absolute of this current location and the difference of this reference position
Value currently rises displacement as this elevator steel cable, and this currently adds up upward stroke for deserving
Front rising displacement and this benchmark upward stroke sum, when this jacking condition of this elevator steel cable
During for declining, the absolute value of the difference calculating this current location and this reference position makees this elevator steel
Decline displacement before the deserving of rope, this currently add up descending stroke for decline before deserving mobile away from
From with this benchmark descending stroke sum.
5. an elevator steel cable load stroke detection system, is adapted to detect for the accumulative negative of elevator steel cable
Carry stroke, it is characterised in that comprising:
Detector unit, detection obtains the current information of this elevator steel cable, and this current information includes working as
Front position, stress value and stress moving direction；
Control unit, receives this current information from this detector unit, and this control unit includes
Initialization module, load judgment module, climb displacement module, memory module, this initialization mould
Block carries out initialization step, obtains the reference information of this elevator steel cable from this memory module, this base
Calibration information includes reference position, benchmark upward stroke and benchmark descending stroke, this load judgment mould
According to this stress value, block judges whether this steel cable loads, to obtain load condition, when this elevator steel
When this load condition of rope is for load, the trip computing module according to this reference position, this is current
Position, this stress moving direction, this benchmark upward stroke and this benchmark descending stroke calculate this and tire out
Meter load stroke, this accumulative stroke that loads is currently to add up upward stroke to go with current accumulative decline
Journey sum, and this memory module store this current location, this currently add up upward stroke and deserve
Front accumulative descending stroke is updated this reference information, when this load condition of this elevator steel cable is
Time unloaded, this memory module directly stores this current location, this benchmark upward stroke, this benchmark
Descending stroke is updated this reference information；And
Display unit, show this currently accumulative upward stroke, this currently add up descending stroke, should
Accumulative load stroke, this current information and this load condition.
6. elevator steel cable load stroke detection system as claimed in claim 5, it is characterised in that,
This load judgment module is provided with default stress threshold value, and presets be subject to by comparing this stress value and this
This load condition of this elevator steel cable of power threshold decision, when this stress value is more than this default stress threshold
During value, it is determined that for this elevator steel cable this load condition for load, when this stress value less than or etc.
When this default stress threshold value, it is determined that this load condition for this elevator steel cable is unloaded.
7. elevator steel cable load stroke detection system as claimed in claim 6, it is characterised in that,
This detector unit includes being connected to the load cell of this elevator steel cable, direction sensor and displacement
Sensor, this load cell obtains this stress value, and direction sensor obtains this stress and moves
Direction, this displacement transducer obtains this current location.
8. elevator steel cable load stroke detection system as claimed in claim 6, it is characterised in that,
This detector unit includes the load cell being connected to this elevator steel cable and is connected to winching barrel
Rotary photoelectric encoder, this load cell obtains this stress value, and this rotary photoelectric encoder obtains
The angle information of this winching barrel and this stress moving direction, and then calculate this current location of acquisition.
9. elevator steel cable load stroke detection system as claimed in claim 5, it is characterised in that,
The trip computing module includes lifting judge module and statistical computation module, this lifting judge module
Judge whether this elevator steel cable moves according to this stress moving direction and this current location, to obtain
Jacking condition, when this jacking condition of this elevator steel cable is for rising, this statistical computation module meter
Calculate this current location and this reference position difference absolute value as this elevator steel cable current on
Rise displacement, and calculate this currently rising displacement and this benchmark upward stroke sum conduct
This most accumulative upward stroke, when this jacking condition of this elevator steel cable is for declining, this statistics
Computing module calculates this current location absolute value with the difference of this reference position as this elevator steel
That restricts front should decline displacement, and calculated and should front decline displacement decline with this benchmark
Stroke sum is as this most accumulative descending stroke, and this statistical computation module also calculates this and currently tires out
Meter upward stroke and this most accumulative descending stroke sum are as this accumulative load stroke.
10. a winch control mechanism, it is characterised in that it includes such as claim 5～9
One described elevator steel cable load stroke detection system.
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