CN105094164B - The method and the flexible axle with torque overload protection of flexible axle torque overload protection - Google Patents
The method and the flexible axle with torque overload protection of flexible axle torque overload protection Download PDFInfo
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- CN105094164B CN105094164B CN201510495273.2A CN201510495273A CN105094164B CN 105094164 B CN105094164 B CN 105094164B CN 201510495273 A CN201510495273 A CN 201510495273A CN 105094164 B CN105094164 B CN 105094164B
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- flexible axle
- motor
- control device
- torsion
- torque overload
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Abstract
Present invention is disclosed a kind of flexible axle with torque overload protection and the method for flexible axle torque overload protection; including flexible axle; one end connection motor of the flexible axle; the other end connects load device; the information collecting device for detecting the flexible axle two ends anglec of rotation or moment of torsion is connected with flexible axle; information collecting device is electrically connected to a control device, and control device is electrically connected to motor, and controlled motor works；The anglec of rotation or flexible axle moment of torsion at flexible axle two ends are gathered by information collecting device, and the data obtained is transferred to connected control device；The control device calculates the differential seat angle at the flexible axle two ends according to the information and specified formula that receive, and acquired results are compared with built-in standard value；The control device controls the work of the motor, so as to realize protecting flexible axle according to comparative result, it is to avoid flexible axle the problem for being permanently deformed and being impacted to flexible axle two ends motor and load device occurs because windup-degree difference in two ends is excessive.
Description
Technical field
The present invention relates to the method and a kind of flexible axle of torque overload protection, especially a kind of side of flexible axle torque overload protection
Method and the flexible axle with torque overload protection.
Background technology
Flexible axle is a kind of flexible power transmission shaft, is formed by multilayer steel wire wound, and for transmitting rotation and torque, flexible axle leads to
As shown in Figure 1, flexible axle one end connects power source for normal application（Motor）, and the other end of flexible axle connection load device, flexible axle
The rotation and torque of motor are passed into load device, setting task is completed.
Due to the flexible speciality of flexible axle, in the transmission process of flexible axle, the two ends of flexible axle have asynchrony phenomenon, especially
In the case of electric motor starting or load device end stall, flexible axle two ends angled can reverse nonsynchronous situation to be occurred, such as
When motor just starts, the motor side of moment of torsion starts to reverse, and the other end（Load device end）Not yet synchronous axial system, so
In the instant of electric motor starting, flexible axle two ends are angled torsions.Another situation is that load device end contingency failure is unexpected
In the case of stall, and now motor does not stop, and is also being rotated further, and this when, flexible axle can also be twisted, now such as too late
Shi Guanting motors, can cause flexible axle beyond maximum application moment of torsion, cause flexible axle to be permanently deformed even and are broken, it could even be possible to also connecting
Tired motor burns in the lump.
The content of the invention
The purpose of the present invention is exactly to solve the above-mentioned problems in the prior art, there is provided a kind of flexible axle torque overload
The method of protection and the flexible axle with torque overload protection.
The purpose of the present invention is achieved through the following technical solutions：
A kind of flexible axle torque overload guard method, comprises the following steps：
S1, information gathering step：The anglec of rotation at information collecting device collection flexible axle two ends or the moment of torsion of flexible axle, and by institute
Obtain data and be transferred to connected control device；
S2, comparison step：The control device calculates the torsion at the flexible axle two ends according to the information and specified formula that receive
Gyration is poor, and result of calculation or the moment of torsion for measuring are compared with built-in standard value；
S3, motor control step：The control device controls the work of the motor according to comparative result.
Preferably, described flexible axle torque overload guard method, wherein：In the S3 steps, the flexible axle two is measured
When the differential seat angle or moment of torsion at end are more than or equal to the first standard value, the control device sends the order for stopping motor；Measure described
When differential seat angle or moment of torsion are in the second standard value, the control device reduces the rotating speed of the motor in proportion；Measure the angle
When degree difference or moment of torsion are less than the second standard value, the working condition of the motor is not adjusted.
Preferably, described flexible axle torque overload guard method, wherein：First standard value is flexible axle maximum twist angle
Or the 95% of peak torque.
Preferably, described flexible axle torque overload guard method, wherein：Second standard value is flexible axle maximum twist angle
Or the 85%-95% of peak torque.
Preferably, described flexible axle torque overload guard method, wherein：The ratio of the rotating speed reduction of the motor is for [most
Big torsion angle/(maximum twist angle-measure torsion angle difference)] * 0.01.
A kind of flexible axle with torque overload protection, including flexible axle, one end connection motor of the flexible axle, other end connection are negative
Carry and put, the information collecting device for detecting the flexible axle two ends anglec of rotation or flexible axle moment of torsion, institute are connected with the flexible axle
State information collecting device and be electrically connected to a control device, the control device is electrically connected to the motor, and controls described
Motor works.
Preferably, the described flexible axle with torque overload protection, wherein：Described information harvester be photoelectric encoder,
One kind in torsion angle phase difference sensor.
Preferably, the described flexible axle with torque overload protection, wherein：The control device is Programmable logical controller
One kind in device, single-chip microcomputer.
Preferably, the described flexible axle with torque overload protection, wherein：The control device is electrically connected with sound and light alarm
Device.
The advantage of technical solution of the present invention is mainly reflected in：
Deft design of the present invention, simple to operate, the motor that can be connected with flexible axle according to the real work situation pair of flexible axle
Working condition carry out accommodation, it is to avoid flexible axle because two ends windup-degree more than maximum bear reverse angle so as to go out
Existing irreversible permanent deformation, the problem for causing flexible axle to waste is conducive to cost-effective；Simultaneously because there is provided various regulation and control refer to
Order so that can be adjusted according to the different operating situation of flexible axle, it is to avoid stop the reduction that motor causes operating efficiency immediately；
The process control of automation is conducive to the whole work efficiency of raising system.
Due to being provided with audible-visual annunciator, and alarm amount in advance is reserved, when the differential seat angle at flexible axle two ends is more than what is specified
During alarming value, can in time be alarmed, remind staff's concern and system is adjusted.
Brief description of the drawings
Fig. 1 is the structural representation in background technology；
Fig. 2 is the structural front view of the embodiment of the present invention 1.
Specific embodiment
The purpose of the present invention, advantage and feature, by by the non-limitative illustration of preferred embodiment below carry out diagram and
Explain.These embodiments are only the prominent examples using technical solution of the present invention, it is all take equivalent or equivalent transformation and
The technical scheme of formation, all falls within the scope of protection of present invention.
Embodiment 1
In order to avoid there is the flexible axle permanent deformation caused in the case of two kinds of failures described in background technology and can
The damage of the motor and load device that can cause, optimizes to whole drive path now, and monitoring is added in drive path
Feedback unit, when finding that flexible axle two ends windup-degree difference or moment of torsion reach the certain value that flexible axle can bear, sends instruction at once
It is given to the running of motor control motor, it is to avoid motor is persistently driven or rotating speed is too fast causes flexible axle to be permanently deformed and flexible axle deformation
May caused motor/load plant failure.
Specifically, a kind of flexible axle with torque overload protection that the present invention is disclosed, as shown in Figure 2, including flexible axle 1, institute
It can be known any flexible axle to state flexible axle 1, in this way Wound-rotor type, universal coupling formula or spring.
One end connection motor 2 of the flexible axle 1, other end connection load device 3, it is characterised in that：On the flexible axle 1
The information collecting device 4 for detecting the anglec of rotation or flexible axle moment of torsion is connected with, described information harvester 4 is preferably photoelectricity and compiles
Code device, the photoelectric encoder is that the geometry of machinery displacement on output shaft is converted into pulse or digital quantity by opto-electronic conversion
Sensor, the photoelectric encoder is 2 and is respectively sleeved at the two ends of the flexible axle 1, and the photoelectric encoder is electrical
A control device 5 is connected to, the control device 5 is the one kind in programmable logic controller (PLC), single-chip microcomputer, preferably may be programmed
Logic controller, the programmable logic controller (PLC) performs storage logical operation and suitable using the memory that can be programmed
The instruction of the operations such as sequence control, timing, counting and arithmetical operation, and connect by numeral or the input (I) simulated and output (O)
Mouthful, control various types of plant equipment or production process；The programmable logic controller (PLC) is electrically connected to the motor 2,
And control the motor 2 to work.
Space structure in view of each part may be produced and influenced each other, and the programmable logic controller (PLC) can be set
On the motor 2 or load device 3, it is preferably arranged on motor 2, and by wire and the wired company of the photoelectric encoder
Connect；Certainly, the programmable logic controller (PLC) can also carry out two-way with the photoelectric encoder by wireless communication module
News, realize wireless connection；Now, the installation site of the programmable logic controller (PLC) is not limited to flexible axle near zone, Ke Yijin
Being adjusted for one step, so that the space structure of each part is more reasonable, reduces interfering for each part.
Further, the programmable logic controller (PLC) is also wired or is wirelessly connected with audible-visual annunciator 6, and controls described
Audible-visual annunciator 6 works；When the programmable logic controller (PLC) draws the flexible axle 1 according to the photoelectric encoder detection data
When the windup-degree difference or moment of torsion at two ends reach the 95% of maximum twist angle or peak torque, the programmable logic controller (PLC) is opened
The dynamic audible-visual annunciator 6 reminds staff to note.
During above-mentioned flexible axle practical application with torque overload protection, its course of work is as follows：
S1, information gathering step：The information collecting device 4 at the two ends of the flexible axle 1, i.e. photoelectric encoder gather described respectively
The anglec of rotation at the two ends of flexible axle 1, and the data obtained is transferred to connected control device 5, i.e., described FPGA control
Device processed；
S2, comparison step：The programmable logic controller (PLC) receives the data of the photoelectric encoder transmission, and according to interior
The windup-degree that the formula put calculates the two ends of flexible axle 1 is poor, then acquired results are compared with built-in standard value；Its
In, the standard value includes the first standard value, the second standard value, and first standard value is flexible axle maximum twist angle or maximum torsion
The 95% of square, general power transmission shaft is that the permission torsion angle value of flexible axle is 0.5 ° ~ 1 °/m, it is desirable to the permission torsion angle of flexible axle high
Value is 0.25 ° ~ 0.5 °/m, it is desirable to which the permission torsion angle value of relatively low flexible axle is 1 ° ~ 2 °/m；Second standard value is soft
Axle maximum twist angle or the 85%-95% of peak torque, including two end points 85% and 95%.
S3, motor control step：The programmable logic controller (PLC) controls the work of the motor 2 according to comparative result.
Specifically, the programmable logic controller (PLC) operationally carries out the control of the motor 2 as follows：Compiled when described
Journey logic controller draws the windup-degree difference or moment of torsion at the two ends of the flexible axle 1 more than or equal to described according to the numerical computations for measuring
During the first standard value, the programmable logic controller (PLC) sends the order for stopping motor 2；It is poor or soft when the windup-degree is measured
When axle moment of torsion is in the second standard value, the programmable logic controller (PLC) reduces the rotating speed of the motor 2 in proportion, wherein, institute
The ratio for stating the rotating speed reduction of motor 2 is [maximum twist angle/(maximum twist angle-measure torsion angle difference)] * 0.01, public herein
Under formula, when the windup-degree difference or flexible axle moment of torsion that measure are bigger, then the programmable logic controller (PLC) reduces turning for the motor 2
Fast ratio is bigger；Conversely, when the windup-degree difference or flexible axle moment of torsion that measure are smaller, then the programmable logic controller (PLC) reduces institute
The rotating speed ratio for stating motor 2 is also just smaller, and the reduction method of this rotating speed is more fitted with real work situation, more science,
Operating efficiency can farthest be ensured；When the windup-degree difference is measured or flexible axle moment of torsion is less than the second standard value, no
Adjust the working condition of the motor 2.
Embodiment 2
The present embodiment is identical with the overall structure of embodiment 1, and its distinctive points is：Described information harvester 4 is set
It is torsion angle phase difference sensor, the torsion angle phase difference sensor is used to measure the torque capacity of flexible axle, and it is to pass through
Two groups of teeth number, shape and the identical gear of setting angle are installed at the two ends of flexible axle, are respectively installed with the outside of gear
One close to (magnetically or optically) sensor, when rotating soft axle, this two sensors can just measure two group pulse ripples, compare this
The phase difference on the front and rear edge of two group pulse ripples can just calculate the torque capacity that elastic shaft is born.Its operation principle and embodiment
1 is identical, will not be repeated here.
The present invention still has numerous embodiments, and information collecting device can also be and be measured by strain measurement technology as described
Device, high-performance wireless torque sensor of flexible axle moment of torsion etc., all use equivalents or equivalent transformation and formed it is all
Technical scheme, is within the scope of the present invention.
Claims (9)
1. a kind of flexible axle torque overload guard method, it is characterised in that：Comprise the following steps：
S1, information gathering step：Information collecting device（4）Collection flexible axle（1）The anglec of rotation at two ends or the moment of torsion of flexible axle, and will
The data obtained is transferred to connected control device（5）；
S2, comparison step：The control device（5）Information and specified formula according to receiving calculate the flexible axle（1）Two ends
Windup-degree is poor, and windup-degree difference or the moment of torsion for measuring are compared with built-in standard value；
S3, motor control step：The control device（5）According to comparative result, the motor is controlled（2）Work.
2. flexible axle torque overload guard method according to claim 1, it is characterised in that：In the S3 steps, work as institute
State flexible axle（1）When the windup-degree difference or moment of torsion at two ends are more than or equal to the first standard value, the control device（5）Send stopping institute
State motor（2）Order；When windup-degree difference or moment of torsion are in the second standard value, the control device（5）In proportion
Reduce the motor（2）Rotating speed；When measuring the windup-degree difference or moment of torsion less than the second standard value, the motor is not adjusted
（2）Working condition.
3. flexible axle torque overload guard method according to claim 2, it is characterised in that：First standard value is flexible axle
Maximum twist angle or the 95% of peak torque.
4. flexible axle torque overload guard method according to claim 2, it is characterised in that：Second standard value is flexible axle
Maximum twist angle or the 85%-95% of peak torque.
5. flexible axle torque overload guard method according to claim 2, it is characterised in that：The motor（2）Rotating speed drop
Low ratio is [maximum twist angle/(maximum twist angle-torsion angle difference)] * 0.01.
6. a kind of flexible axle with torque overload protection, including flexible axle（1）, the flexible axle（1）One end connection motor（2）, it is another
End connection load device（3）, it is characterised in that：In the flexible axle（1）On be connected with for detect the flexible axle two ends anglec of rotation or
The information collecting device of flexible axle moment of torsion（4）, described information harvester（4）It is electrically connected to a control device（5）, the control
Device（5）It is electrically connected to the motor（2）, and control the motor（2）Work.
7. it is according to claim 6 with torque overload protection flexible axle, it is characterised in that：Described information harvester（4）
It is the one kind in photoelectric encoder, torsion angle phase difference sensor.
8. it is according to claim 6 with torque overload protection flexible axle, it is characterised in that：The control device（5）Being can
One kind in programmed logic controller, single-chip microcomputer.
9. according to any described flexible axles protected with torque overload of claim 6-8, it is characterised in that：The control device
（5）It is electrically connected with audible-visual annunciator（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510495273.2A CN105094164B (en) | 2015-08-13 | 2015-08-13 | The method and the flexible axle with torque overload protection of flexible axle torque overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510495273.2A CN105094164B (en) | 2015-08-13 | 2015-08-13 | The method and the flexible axle with torque overload protection of flexible axle torque overload protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105094164A CN105094164A (en) | 2015-11-25 |
| CN105094164B true CN105094164B (en) | 2017-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510495273.2A Active CN105094164B (en) | 2015-08-13 | 2015-08-13 | The method and the flexible axle with torque overload protection of flexible axle torque overload protection |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2416970Y (en) * | 2000-04-27 | 2001-01-31 | 北京新亚洲大力机械有限公司 | Overload protective device for spring flexible shaft |
| JP4823597B2 (en) * | 2005-07-25 | 2011-11-24 | オリンパスメディカルシステムズ株式会社 | Medical control device |
| US8335597B2 (en) * | 2005-09-09 | 2012-12-18 | Kagoshima University | Remote-controlled mobile machine using flexible shafts |
| WO2010077282A1 (en) * | 2008-12-08 | 2010-07-08 | Skf Usa Inc. | Automated condition-based lubrication system |
| CN201837487U (en) * | 2010-11-04 | 2011-05-18 | 吉林大学 | Motive power flexible transmission torque detection testing device |
| CN204925820U (en) * | 2015-08-13 | 2015-12-30 | 舒能（苏州）工业技术有限公司 | Take moment of torsion overload protection's flexible axle |
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- 2015-08-13 CN CN201510495273.2A patent/CN105094164B/en active Active
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| CN105094164A (en) | 2015-11-25 |
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