CN109534140A - The modeling of Escalator step chains and fault simulation method based on SIMPACK - Google Patents
The modeling of Escalator step chains and fault simulation method based on SIMPACK Download PDFInfo
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- CN109534140A CN109534140A CN201811611011.8A CN201811611011A CN109534140A CN 109534140 A CN109534140 A CN 109534140A CN 201811611011 A CN201811611011 A CN 201811611011A CN 109534140 A CN109534140 A CN 109534140A
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- escalator step
- guide rail
- sprocket wheel
- chain
- escalator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
- B66B29/005—Applications of security monitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B27/00—Indicating operating conditions of escalators or moving walkways
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Abstract
The present invention provides a kind of modeling of Escalator step chains and fault simulation method based on SIMPACK.This method establishes Escalator step chains simulation model using dynamics simulation software SIMPACK, and vibration acceleration sensor is arranged on model driven shaft, is separately added into chain pitch elongation, pin shaft and three kinds of sleeve wears away, roller and gear wear failure modes.Carry out the offline integral under normal condition, chain pitch elongation state, pin shaft and sleeve wears away state, roller and gear wear condition respectively in SIMPACK, offline integral result is opened in dynamics simulation software SIMPACK preprocessor, and the driven shaft lateral vibration acceleration data needed for exporting, driven shaft lateral vibration acceleration data under four kinds of states are analyzed, the fault observer under different conditions is studied.This emulation mode can rapidly and accurately emulate the operating status under each fault condition of Escalator step chains, save a large amount of manpower and material resources and financial resources, and to avoiding Escalator failure from being of great significance.
Description
Technical field
The present invention relates to Escalator technical field more particularly to it is a kind of based on SIMPACK Escalator step chains modeling with
Fault simulation method.
Background technique
Escalator step chains are a very important components in Escalator transmission system.In Escalator operational process,
Driving motor drives the rotation of active bearings by the transmission effect of drive chain, to drive the operating of ladder sprocket wheel, step chains
Wheel runs step chains along set path by the engagement with step chains, thus continuously by people or cargo
Another position is transmitted to from a position.Due in step chains transmission process, suffered different degrees of load, so that chain
Phase mutual friction under the action of external force and friction media between the components of internal structure causes chain pitch elongation, pin shaft and set
The problems such as cylinder abrasion.In roller and Meshing Process of Spur Gear, periodic impact can be generated, along with the shadow of polygon effect
It rings, roller and gear generate deterioration, show as roller outer diameter reduction, the flank profil deformation of gear etc..This not only influences step chains
Performance, the comfort level of passenger, it is most important that the safe condition for greatly affecting step chains significantly reduces step chains
Service life increases maintenance maintenance cost.Once step chains situation occurred, consequence will be hardly imaginable.According to national standard, when
When the total length elongation of chain reaches 3%, involuntary conversion chain is needed.
The inspection method of a kind of pair of Escalator step chains in the prior art are as follows: step chains fracture peace is installed on Escalator
Full protection device, when step chain extends to a certain extent, tensioning apparatus is subjected to displacement to a certain specific position, is up to
Protective standard, then Escalator will be out of service, maintenance personal repairs and safeguards.
The shortcomings that above-mentioned inspection method in the prior art to Escalator step chains are as follows: the unpredictable step chains of this method
State subsequent protection can only be carried out for failures such as the catastrophic breaks of step chains, the accident of not can avoid is brought
Loss.In addition to this, for the inspection method of Escalator step chains be manual inspection, maintenance personal regularly to step chains into
Row checks and maintenance, and this inspection method is seen based on human eye, ear is listened and the inspection of step chains state is carried out by tool.By artificial
The influence of factor, step chains position and site work environment etc., the method for manual inspection are often possible to missing inspection occur
Situation, and maintenance person's large labor intensity, consumption fund is more, and technology proof time is long.Finally, prediction in relation to chain state with
The research of life estimation is all based on greatly what a large amount of test carried out, this kind of method is firstly the need of long time, it is also necessary to disappear
A large amount of fee of material is consumed, and needs enough manpowers and time, but the reliability of experimental result has to be determined, experiment knot
Fruit can only be as the reference in real process.
Summary of the invention
The embodiment provides a kind of modeling of Escalator step chains and fault simulation method based on SIMPACK,
To overcome problem of the prior art.
To achieve the goals above, this invention takes following technical solutions.
A kind of modeling of Escalator step chains and fault simulation method based on SIMPACK, comprising:
S1, according to the structures of Escalator step chains and its between mechanical relationship, draw the topology knot of Escalator step chains
Composition；
S2, the physical model that Escalator step chains are established using the chain conveyer module of dynamics simulation software SIMPACK, and
The physical attribute of Escalator step chains all parts is set；
S3, according to the topological structure of Escalator step chains and the physical attribute of Escalator step chains all parts, setting electricity
Connection relationship in stair step chain model between each component obtains Escalator step chain model；
S4, sensor model is set in the Escalator step chain model；
S5, line duration integral calculation is carried out to the Escalator step chain model, according to line duration integral calculation knot
Fruit verifies the correctness of the Escalator step chain model；
S6, the normal condition that the Escalator step chain model is carried out in SIMPACK, chain pitch elongation malfunction,
The emulation of pin shaft and sleeve wears away malfunction, roller and gear wear malfunction, and in normal condition and various failure shapes
Offline integral calculation is carried out under state respectively；
S7, extracted in the preprocessor of SIMPACK software normal condition and emulation data under various malfunctions and
Offline integral calculation obtains Escalator step as a result, to the emulation data and the progress data analysis of offline integral calculation result
Fault data rule under each failure mode of chain.
Further, the structure of the Escalator step chain model include step chains, ladder sprocket wheel, driving shaft, driven shaft,
Guide plate and tensioning apparatus；
The Escalator step chain model include four sprocket wheels, two bearings, eight guide rails and a tensioning apparatus, first
Sprocket wheel and the 4th sprocket wheel in upper end, the second sprocket wheel and third sprocket wheel in lower end, two sprocket wheels of upper end by active axis connection, and
The phase angle of two sprocket wheels is equal, and two sprocket wheels of lower end are by driven axis connection, and the phase angle of two sprocket wheels is equal, and first
Sprocket wheel and the second sprocket wheel are in a plane, and the first step chain by being closed connects, and third sprocket wheel and the 4th sprocket wheel are at one
Plane, and the second step chain by being closed connects, advanced side upper curve section guide rail one is the first guide rail, advanced side lower curve
Section guide rail one is the second guide rail, returns to side lower curve section guide rail one i.e. third guide rail, returns to side upper curve section guide rail one
I.e. the 4th guide rail is separately positioned on the path of the first step chain, and advanced side upper curve section guide rail two is the 5th guide rail, preceding
It is the 6th guide rail, returns to side lower curve section guide rail two i.e. the 7th guide rail, return side upper curve into side lower curve section guide rail two
Section guide rail two is that the 8th guide rail is separately positioned on the path of the second step chain, and tensioning apparatus is mounted on lower end and driven shaft
Connection.
Further, in the Escalator step chain model, the freedom degree rotated around z-axis is arranged in the driving shaft, is
No. 27 hinged bodies, and the movement in the direction gamma is defined, driving shaft uses No. 27 articulated types, so that driving shaft constant speed turns
Dynamic, first sprocket wheel and the 4th sprocket wheel are separately mounted to the both ends of driving shaft, and the articulated manner between driving shaft is set
It is set to zero freedom degree.
Further, in the Escalator step chain model, the driven shaft schedules the freedom degree in three directions, respectively
It is x, y, gamma, i.e., the freedom degree of the freedom degree and transverse direction and longitudinal direction that rotate around z-axis is arranged in the described driven shaft, and is arranged certain
Rigidity and damping.Second sprocket wheel and third sprocket wheel are separately mounted to the both ends of driven shaft, and the second sprocket wheel and third
Articulated manner between sprocket wheel and driven shaft is set as zero freedom degree.
Further, in the Escalator step chain model, the guide rail be successively set on respectively the first step chains and
It on the path of second step chains, play the guiding role, so that step chains are transmitted according to set path；
In the Escalator step chain model, the tensioning apparatus and driven axis connection simultaneously establish spring force, for adjusting
The position for saving driven shaft defines No. 1 spring force between the tensioning apparatus and driven wheel.
Further, sensor model is set in the Escalator step chain model in the S4, comprising:
Acceleration transducer is set on the driven shaft of Escalator step chain model, the acceleration transducer be defined on from
On moving axis, the lateral vibration acceleration for measuring driven shaft under normal condition and various malfunctions emulates data.
Further, normal condition and various failure shapes are extracted in the preprocessor of SIMPACK software in the S7
Emulation data and offline integral calculation under state in the preprocessor of SIMPACK software as a result, extract normal condition and various
Emulation data and offline integral calculation under malfunction are as a result, count the emulation data and offline integral calculation result
According to analysis, the fault data rule under each failure mode of Escalator step chains is obtained, comprising:
Chain pitch parameter by the way that minor structure chain is arranged obtains chain pitch elongation state failure；
Pin shaft and sleeve wears away state are obtained by pin shaft outer diameter and sleeve diameter parameter that minor structure chain is arranged；
By the way that the roller outer diameter of minor structure chain and roller seating radius and the tooth flank radius ginseng of chain sprocket structure is arranged
Number obtains roller and gear wear condition；
Normal condition and chain pitch elongation malfunction, pin shaft and sleeve are extracted in the preprocessor of SIMPACK software
Emulation data and offline integral calculation under wear-out failure state, roller and gear wear malfunction are as a result, the emulation number
According to including driven shaft lateral vibration acceleration data, the emulation data under the normal condition and various malfunctions to extraction are carried out
Time and frequency domain analysis obtains the time domain and frequency domain character value of data, and the time domain and frequency domain character value include average value, side
Difference, kurtosis, gravity frequency, square frequency and/or frequency variance, and to emulation data under normal condition and various malfunctions
Time domain and frequency domain character value are compared, and obtain the failure of Escalator step chains according to the analysis of data feature values and comparison result
Data rule.
As can be seen from the technical scheme provided by the above-mentioned embodiment of the present invention, the embodiment of the present invention and the prior art are in electricity
Step chains protective device is installed to compare on staircase, the embodiment of the present invention can be effectively in simulation Escalator step chains various situations
Operating status, the related Mechanical Data of step chains can be obtained in real time, and by analyzing these data, to the failure of step chains
State judges.The present invention is not influenced by human factor, step chains positional factor and site work environment factor, Neng Gouji
The failure of Shi Faxian step chains avoids missing inspection, and saves a large amount of manpower and technology proof time.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is a kind of stream of Escalator step chains modeling and simulating method based on SIMPACK provided in an embodiment of the present invention
Cheng Tu；
Fig. 2 is a kind of structure chart of the Escalator step chain model based on SIMPACK provided in an embodiment of the present invention, (a)
(b) it is left view for right view, (c) is front view；
Fig. 3 be a kind of stepchain provided in an embodiment of the present invention away from elongation state figure (dotted line be before extending, and solid line is
After elongation)；
Fig. 4 is that (dotted line be reality before abrasion for a kind of step chains pin shaft provided in an embodiment of the present invention and sleeve wears away state diagram
Line is after wearing)；
Fig. 5 is that (dotted line is before wearing, in fact for a kind of step chains roller and gear wear condition figure provided in an embodiment of the present invention
Line is after wearing)；
Fig. 6 is the time domain of driven shaft lateral vibration acceleration under a kind of step chains normal condition provided in an embodiment of the present invention
Waveform diagram；
Fig. 7 is a kind of stepchain provided in an embodiment of the present invention away from driven shaft lateral vibration acceleration under elongation state
Time domain waveform；
Fig. 8 is that driven shaft oscillation crosswise adds under a kind of step chains pin shaft provided in an embodiment of the present invention and sleeve wears away state
The time domain waveform of speed；
Fig. 9 is that driven shaft oscillation crosswise adds under a kind of step chains roller provided in an embodiment of the present invention and gear wear condition
The time domain waveform of speed；
1. first sprocket wheel in figure, 2. second sprocket wheels, 3. third sprocket wheels, 4. the 4th sprocket wheels, 5. driving shafts, 6. driven shafts, 7.
First guide rail, 8. second guide rails, 9. third guide rails, 10. the 4th guide rails, 11. the 5th guide rails, 12 the 6th guide rails, 13. the 7th lead
Rail, 14. the 8th guide rails, 15. first step chains, 16. second step chains, 17. tensioning apparatus, 18. sensors.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
In order to facilitate understanding of embodiments of the present invention, it is done by taking several specific embodiments as an example below in conjunction with attached drawing further
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Based on the above analysis, develop in Escalator technology high-speed, demand space greatly and elevator accident today for taking place frequently,
Installation step chains safety guard, manual inspection method and test method more cannot quickly and accurately detect and in real time
The safe condition for grasping step chains, is unable to satisfy the actual demand of engineering practice.
The embodiment of the invention provides a kind of Escalator step chains modeling and simulating based on dynamics simulation software SIMPACK
Method, the state of this method analog simulation Escalator step chains in the process of running, and then analyze state feature, the place of this method
Process is managed as shown in Figure 1, including the following steps:
S1: according to the structure of Escalator step chains and its between mechanical relationship, draw Escalator step chains topology knot
Composition.
S2: establishing the physical model of Escalator step chains using the chain conveyer module of dynamics simulation software SIMPACK, and
The physical attribute of Escalator step chains all parts is set.
S3: according to the physical attribute of the topological structure of Escalator step chains and Escalator step chains all parts, setting electricity
Connection relationship in stair step chain model between each component obtains Escalator step chain model.It is provided in an embodiment of the present invention
A kind of structure of Escalator step chain model is as shown in Figure 2, wherein (a) is right view, (b) is left view, (c) is front view.
The present embodiment model is to reduce a certain proportion of model, and assume that the load of step chains is constant, setting driving shaft revolving speed perseverance
Usual practice such as 1rad/s.
The Escalator step chain model is to carry out simplified model, the knot of Escalator step chain model to physical model
Structure includes step chains, ladder sprocket wheel, driving shaft, driven shaft, guide plate and tensioning apparatus etc..
Above-mentioned Escalator step chain model includes four sprocket wheels, two bearings, eight guide rails and a tensioning apparatus.First
Sprocket wheel and the 4th sprocket wheel are in upper end, and the second sprocket wheel and third sprocket wheel are in lower end.Two sprocket wheels of upper end by active axis connection, and
The phase angle of two sprocket wheels is equal, and two sprocket wheels of lower end are by driven axis connection, and the phase angle of two sprocket wheels is equal.First
Sprocket wheel and the second sprocket wheel are in a plane, and the first step chain by being closed connects；Third sprocket wheel and the 4th sprocket wheel are at one
Plane, and the second step chain by being closed connects.Advanced side upper curve section guide rail one is the first guide rail, advanced side lower curve
Section guide rail one is the second guide rail, returns to side lower curve section guide rail one i.e. third guide rail, returns to side upper curve section guide rail one
I.e. the 4th guide rail is separately positioned on the path of the first step chain；Advanced side upper curve section guide rail two is the 5th guide rail, preceding
It is the 6th guide rail, returns to side lower curve section guide rail two i.e. the 7th guide rail, return side upper curve into side lower curve section guide rail two
Section guide rail two is that the 8th guide rail is separately positioned on the path of the second step chain, and tensioning apparatus is mounted on lower end and driven shaft
Connection.
In above-mentioned Escalator step chain model, the freedom degree rotated around z-axis is arranged in the driving shaft, is No. 27 hinged
Body, and define the movement in the direction gamma, driving shaft uses No. 27 articulated types, so that driving shaft constant revolution.Described
One sprocket wheel and the 4th sprocket wheel are separately mounted to the both ends of driving shaft, and the articulated manner between driving shaft is set as zero freely
Degree.
In above-mentioned Escalator step chain model, the driven shaft schedule three directions freedom degree, be respectively x, y,
Gamma, i.e., the freedom degree of freedom degree and transverse direction and longitudinal direction that the described driven shaft setting is rotated around z-axis, and certain rigidity is set
And damping.Second sprocket wheel and third sprocket wheel are separately mounted to the both ends of driven shaft, and the second sprocket wheel and third sprocket wheel with
Articulated manner between driven shaft is set as zero freedom degree.
In above-mentioned Escalator step chain model, the guide rail is successively set on the first step chains and the second step respectively
It on the path of chain, play the guiding role, so that step chains are transmitted according to set path.
In above-mentioned Escalator step chain model, the tensioning apparatus and driven axis connection simultaneously establish spring force, are used for
The position of driven shaft is adjusted to guarantee the elasticity of step chains.No. 1 spring force is defined between the tensioning apparatus and driven wheel.
S4: in the middle setting sensor model of Escalator step chain model, as shown in Fig. 2, being for example arranged on driven shaft
Acceleration transducer, to measure the delta data of driven shaft lateral vibration acceleration.Above-mentioned acceleration transducer be defined on from
On moving axis, measures driven shaft lateral vibration acceleration under normal condition and various malfunctions and emulate data.
S5: line duration integral calculation is carried out to the Escalator step chain model, to verify the correctness of model.Such as
Fruit model can normally calculate line duration integral, then model is normal；Else if model there are mistake, click on line integral by
After button, it may appear that warning, certain part of hints model have certain aspect, need to modify to model, until model
Line duration integral can normally be calculated.
S6: the Escalator step chain model of normal operation state in dynamics simulation software SIMPACK is accumulated offline
Divide and calculates.
The failure mode of chain pitch elongation is added, Fig. 3 is a kind of stepchain provided in an embodiment of the present invention away from elongation
State diagram, dotted line are before extending, and solid line is after extending, as shown in figure 3, and sampling is arranged in the solver of SIMPACK software
Frequency is 5000Hz, and when integral is 8 minutes a length of, and uses SLODE integrator, clicks offline integral button and carries out offline integrating meter
It calculates.
Be added the failure mode of pin shaft and sleeve wears away, Fig. 4 be a kind of step chains pin shaft provided in an embodiment of the present invention and
Sleeve wears away state diagram, dotted line are before wearing, and solid line is after wearing, as shown in figure 4, and in the solver of SIMPACK software
Setting sample frequency is 5000Hz, and when integral is 8 minutes a length of, and uses SLODE integrator, click offline integral button carry out from
Line integral.
Be added the failure mode of roller and gear wear, Fig. 5 be a kind of step chains roller provided in an embodiment of the present invention and
Gear wear condition figure, dotted line are before wearing, and solid line is after wearing, as shown in figure 5, and in the solver of SIMPACK software
Setting sample frequency is 5000Hz, and when integral is 8 minutes a length of, and uses SLODE integrator, click offline integral button carry out from
Line integral.
S7: extracting offline integral calculation result using the preprocessor of dynamics software SIMPACK, extracts normal
When state, chain pitch elongation state, pin shaft and sleeve wears away state and roller and gear wear condition drag stable operation
Between section (this example takes 3s) driven shaft lateral vibration acceleration data；
S8: Fig. 6 is driven shaft lateral vibration acceleration under a kind of step chains normal condition provided in an embodiment of the present invention
Time domain waveform, Fig. 7 are time domain waveform of the stepchain away from driven shaft lateral vibration acceleration under elongation state, and Fig. 8 is
The time domain waveform of driven shaft lateral vibration acceleration under step chains pin shaft and sleeve wears away state, Fig. 9 be step chains roller and
The time domain waveform of driven shaft lateral vibration acceleration under gear wear condition.
Chain pitch parameter by the way that minor structure chain is arranged obtains chain pitch elongation state failure.
Pin shaft and sleeve wears away state are obtained by pin shaft outer diameter and sleeve diameter parameter that minor structure chain is arranged.
By the way that the roller outer diameter of minor structure chain and roller seating radius and the tooth flank radius ginseng of chain sprocket structure is arranged
Number obtains roller and gear wear condition.
Normal condition and chain pitch elongation malfunction, pin shaft and sleeve are extracted in the preprocessor of SIMPACK software
Emulation data and offline integral calculation under wear-out failure state, roller and gear wear malfunction are as a result, the emulation number
According to including driven shaft lateral vibration acceleration data, the emulation number stated under three kinds of malfunctions lower and upper to the normal condition of extraction
According to carry out time and frequency domain analysis, obtain the time domain and frequency domain character value of data, as average value, variance, kurtosis, gravity frequency,
Square frequency, frequency variance etc..And to the time domain and frequency domain character value that data are emulated under normal condition and various malfunctions into
Row compares, and obtains the fault data rule of Escalator step chains according to the analysis of data feature values and comparison result.
In conclusion the embodiment of the present invention is compared with the prior art installs step chains protective device on Escalator, this hair
Bright embodiment can operating status effectively in simulation Escalator step chains various situations, the phase of step chains can be obtained in real time
Mechanical Data is closed, and by analyzing these data, the malfunction of step chains is judged.
Compared with the method for prior art manual inspection, the present invention is not by human factor, step chains positional factor and scene
The influence of operating environment factor can find the failure of step chains in time, avoid missing inspection, and save a large amount of manpower and skill
Art proof time.
With the prior art by test research method compared with, the present invention do not need a large amount of test material, manpower and when
Between, greatly reduce fee of material, labour cost and the time cost needed during test.
Those of ordinary skill in the art will appreciate that: attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Process is not necessarily implemented necessary to the present invention.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (7)
1. a kind of modeling of Escalator step chains and fault simulation method based on SIMPACK characterized by comprising
S1, according to the structures of Escalator step chains and its between mechanical relationship, draw the topology diagram of Escalator step chains；
S2, the physical model that Escalator step chains are established using the chain conveyer module of dynamics simulation software SIMPACK, and be arranged
The physical attribute of Escalator step chains all parts；
S3, according to the topological structure of Escalator step chains and the physical attribute of Escalator step chains all parts, Escalator is set
Connection relationship in step chain model between each component obtains Escalator step chain model；
S4, sensor model is set in the Escalator step chain model；
S5, line duration integral calculation is carried out to the Escalator step chain model, is tested according to line duration integral calculation result
Demonstrate,prove the correctness of the Escalator step chain model；
S6, the normal condition that the Escalator step chain model is carried out in SIMPACK, chain pitch extend malfunction, pin shaft
With the emulation of sleeve wears away malfunction, roller and gear wear malfunction, and under normal condition and various malfunctions
Offline integral calculation is carried out respectively；
S7, normal condition and emulation data under various malfunctions and offline are extracted in the preprocessor of SIMPACK software
Integral calculation obtains Escalator step chains as a result, to the emulation data and the progress data analysis of offline integral calculation result
Fault data rule under each failure mode.
2. the method according to claim 1, wherein the structure of the Escalator step chain model includes step
Chain, ladder sprocket wheel, driving shaft, driven shaft, guide plate and tensioning apparatus；
The Escalator step chain model includes four sprocket wheels, two bearings, eight guide rails and a tensioning apparatus, the first sprocket wheel
With the 4th sprocket wheel in upper end, the second sprocket wheel and third sprocket wheel in lower end, two sprocket wheels of upper end are by active axis connection, and two
The phase angle of sprocket wheel is equal, and two sprocket wheels of lower end are by driven axis connection, and the phase angle of two sprocket wheels is equal, the first sprocket wheel
With the second sprocket wheel in a plane, and the first step chain by being closed connects, third sprocket wheel and the 4th sprocket wheel in a plane,
And the second step chain by being closed connects, advanced side upper curve section guide rail one is the first guide rail, advanced side lower curve section
Guide rail one is the second guide rail, returns to side lower curve section guide rail one and be third guide rail, return to side upper curve section guide rail one i.e. the
Four guide rails are separately positioned on the path of the first step chain, and advanced side upper curve section guide rail two is the 5th guide rail, advanced side
Lower curve section guide rail two is the 6th guide rail, returns to side lower curve section guide rail two i.e. the 7th guide rail, returns to side upper curve section
Guide rail two is that the 8th guide rail is separately positioned on the path of the second step chain, and tensioning apparatus is mounted on lower end and driven shaft connects
It connects.
3. according to the method described in claim 2, it is characterized in that, in the Escalator step chain model, the driving shaft
Freedom degree around z-axis rotation is set, is No. 27 hinged bodies, and define the movement in the direction gamma, driving shaft is using No. 27 hinges
Type is connect, so that driving shaft constant revolution, first sprocket wheel and the 4th sprocket wheel are separately mounted to the both ends of driving shaft, and with
Articulated manner between driving shaft is set as zero freedom degree.
4. according to the method described in claim 3, it is characterized in that, in the Escalator step chain model, the driven shaft
It is x, y, gamma respectively due to the freedom degree in three directions, i.e., the freedom degree and transverse direction rotated around z-axis is arranged in the described driven shaft
And longitudinal freedom degree, and certain rigidity and damping are set.Second sprocket wheel and third sprocket wheel are separately mounted to driven shaft
Both ends, and the articulated manner between the second sprocket wheel and third sprocket wheel and driven shaft is set as zero freedom degree.
5. according to the method described in claim 4, it is characterized in that, the guide rail divides in the Escalator step chain model
It is not successively set on the path of the first step chains and the second step chains, play the guiding role, so that step chains are according to set road
Diameter transmitting；
In the Escalator step chain model, the tensioning apparatus and driven axis connection simultaneously establish spring force, for adjust from
The position of moving axis defines No. 1 spring force between the tensioning apparatus and driven wheel.
6. method according to any one of claims 1 to 5, which is characterized in that in the S4 in the Escalator step
Sensor model is set in chain model, comprising:
Acceleration transducer is set on the driven shaft of Escalator step chain model, and the acceleration transducer is defined on driven shaft
On, the lateral vibration acceleration for measuring driven shaft under normal condition and various malfunctions emulates data.
7. according to the method described in claim 6, it is characterized in that, in the S7 in the preprocessor of SIMPACK software
Normal condition and emulation data and offline integral calculation under various malfunctions are extracted as a result, at the rear place of SIMPACK software
It manages and extracts normal condition and emulation data and offline integral calculation under various malfunctions in device as a result, to the emulation data
Data analysis is carried out with offline integral calculation result, obtains the fault data rule under each failure mode of Escalator step chains
Rule, comprising:
Chain pitch parameter by the way that minor structure chain is arranged obtains chain pitch elongation state failure；
Pin shaft and sleeve wears away state are obtained by pin shaft outer diameter and sleeve diameter parameter that minor structure chain is arranged；
It is obtained by the roller outer diameter of setting minor structure chain and the roller seating radius and tooth flank radius parameter of chain sprocket structure
To roller and gear wear condition；
Normal condition and chain pitch elongation malfunction, pin shaft and sleeve wears away are extracted in the preprocessor of SIMPACK software
Emulation data and offline integral calculation under malfunction, roller and gear wear malfunction are as a result, the emulation data packet
Driven shaft lateral vibration acceleration data are included, the emulation data under the normal condition and various malfunctions to extraction carry out time domain
And frequency-domain analysis, obtain the time domain and frequency domain character value of data, the time domain and frequency domain character value include average value, variance, high and steep
Degree, gravity frequency, square frequency and/or frequency variance, and to the time domain for emulating data under normal condition and various malfunctions
It is compared with frequency domain character value, the fault data of Escalator step chains is obtained according to the analysis of data feature values and comparison result
Rule.
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| CN112949138A (en) * | 2021-03-23 | 2021-06-11 | 江苏大学 | Kinematics and dynamics modeling simulation method of escalator step chain transmission system |
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