CN102305070A - Cutting speed regulating system and development machine - Google Patents
Cutting speed regulating system and development machine Download PDFInfo
- Publication number
- CN102305070A CN102305070A CN201110224435A CN201110224435A CN102305070A CN 102305070 A CN102305070 A CN 102305070A CN 201110224435 A CN201110224435 A CN 201110224435A CN 201110224435 A CN201110224435 A CN 201110224435A CN 102305070 A CN102305070 A CN 102305070A
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- China
- Prior art keywords
- frequency converter
- cut
- cutting motor
- governing system
- parameter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
Abstract
The invention discloses a cutting speed regulating system and a development machine. The cutting speed regulating system comprises a frequency converter, a cutting motor and a cutting head, wherein the frequency converter is used for receiving a power supply current and regulating the amplitude of the current; the cutting motor is electrically connected with the frequency converter, and is used for receiving the current which is output after the amplitude is regulated by the frequency converter, and outputting corresponding torque and rotating speed according to the amplitude of the current; and the cutting head is driven by the cutting motor and is used for cutting a coal bed. The cutting speed regulating system can use the frequency converter to change the output rotating speed and the torque of the cutting motor so as to realize stepless speed regulation.
Description
Technical field
The present invention relates to engineering machinery field, be meant a kind of cut governing system and development machine especially.
Background technology
In the coal mine roadway tunneling process, because coal bed texture is complicated, the soft or hard degree changes does not have rule.In order to adapt to the complex working condition of down-hole, be easy to expect: adopt the low speed high torque cut for hard coal seam, and, then adopt the high speed cut, to improve cut efficient for soft seam.But because the restriction of aspects such as technology, intensity, present development machine only can be accomplished the speed regulation of 2-4 level, can not realize the Perfect Matchings of cut output speed, torque and coal seam soft durometer.In addition, in the prior art, existing cut system adopts single (two) speed motor and single (many) ratio gearbox mechanical engagement usually, according to operating personnel personal experience, current detection value etc. manually or 2～4 grades of speed governing of completion automatically.Carry out high low speed through manual operation mostly and switch and driving speed control, cutting motor in overload, underload etc. fluctuate in a big way, be unfavorable for increasing work efficiency and reliability.
There is following problem in cut governing system in the prior art: 1, the volume of variable pole adjustable speed motor is big, and the manufacturing technology difficulty is big, and belonging to has utmost point speed governing; 2, gear meshing cooperates double-speed motor, can only have 4 kinds of different rotating speed at most, and multiple gear ratios reductor poor stability; 3, can't realize cutterhead rotating speed, the continuous electrodeless adjusting of torque; 4, most personal experience of relying on is switched in speed governing, judges fuzzy, inaccuracy.
Summary of the invention
The present invention proposes a kind of cut governing system and development machine, utilizes frequency converter to change output speed, the torque of cutting motor, thereby can realize stepless time adjustment.
Technical scheme of the present invention is achieved in that
A kind of cut governing system is applied to comprise in the development machine in coal driving field:
Frequency converter is used to receive source current, and the amplitude of electric current is regulated;
Cutting motor is electrically connected with said frequency converter, is used to receive said frequency converter and regulates the electric current of exporting after the amplitude, and export corresponding torque and rotating speed according to the amplitude of electric current;
Cutterhead is driven by said cutting motor, is used for the cut coal seam.
Preferably, also comprise:
Reducing gear is arranged between said cutting motor and the said cutterhead.
Preferably, also comprise:
Controller is used to export control signal, controls said frequency converter through said control signal the amplitude of electric current is regulated.
Preferably, also comprise:
Encoder; Be arranged on the said cutting motor; The feedback end of said encoder also is connected with said frequency converter; Be used to detect the working condition of said cutting motor; And first condition information of exporting said cutting motor to said frequency converter, be sent to said controller by said frequency converter after to the first condition information analyzing and processing;
First condition information of said controller after according to said frequency converter analyzing and processing generates said control signal.
Preferably, also comprise:
Sensor groups is arranged on said cutting motor and the said cutterhead, is used to detect the operating mode of each parts, and exports second duty parameter and be sent to said controller;
First condition information and second duty parameter of said controller after according to said frequency converter analyzing and processing generates said control signal.
Preferably, said second Ministry of worker's parameter comprises: any one or a few combination in temperature parameter, stress parameters, load parameter, vibrations parameter, the impact parameter.
Preferably, also comprise:
The reactance filtration module is arranged on the said frequency converter, harmonic wave and electromagnetic interference when being used to eliminate said frequency converter work.
Preferably, also comprise:
Damping device is arranged on the said frequency converter, the vibrations when being used to alleviate said frequency converter work.
Preferably, also comprise:
Cooling unit is arranged on the said frequency converter, is used for said frequency converter is cooled off.
A kind of development machine is applied to coal driving field, comprises machine body of boring machine, also comprises foregoing cut governing system, and said cut governing system is arranged in the said machine body of boring machine.
Technical scheme of the present invention utilizes frequency converter to change output speed, the torque of cutting motor, thereby can realize stepless time adjustment, rather than carries out speed governing or pole-changing control through frame for movement, thereby can reduce the volume and the manufacture difficulty of cutting motor; Further, frequency converter, encoder are monitored running status and feedback controllers such as cutting motor electric current, rotating speed in real time; Sensor groups is monitored duty parameter and feedback controllers such as cut temperature, STRESS VARIATION, load change, vibrations, impact in real time; Make the speed governing cut accurate more, stable; Adaptive ability is strong; Thereby can intellectual analysis, identification cut coal seam information, and regulate the coupling cut way of output automatically.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously; Accompanying drawing in describing below only is some embodiments of the present invention; For those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of cut governing system first embodiment of the present invention;
Fig. 2 is the principle schematic of a kind of cut governing system of the present invention.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Cut governing system of the present invention is applied in the development machine in coal driving field, and with reference to Fig. 1, Fig. 2, in an embodiment of a kind of cut governing system of the present invention, said cut governing system 100 comprises frequency converter 1, cutting motor 2, cutterhead 5.
Said frequency converter 1 is used to receive source current, and the amplitude of electric current is regulated.
Wherein, said source current can be external ac power source electric current or other source current, and the amplitude of said electric current is meant current/voltage, power frequency etc.
Amplitudes such as the voltage of electric current, frequency are different, and the torque of then said cutting motor 2 outputs is also different with rotating speed, and amplitudes such as the torque of said cutting motor 2 outputs and the voltage of rotating speed and electric current, frequency exist corresponding relation.
Such as, by asynchronous machine rotating speed formula:
n＝60f(1-s)/p；
And the relation between motor nominal torque and the rotating speed:
T＝9550P/n；
Wherein, cut rotation speed n, cut torque T, frequency f, number of pole-pairs p, revolutional slip s, power P;
Can know that the change of cutting motor 2 incoming frequencies will make the rotating speed of cutting motor 2 and torque change, thereby can influence the cut torque of cutterhead 5.
Cutterhead 5 is driven by said cutting motor 2, is used for the cut coal seam.
Further, said cut governing system 100 also comprises:
Reducing gear 4 is arranged between said cutting motor 2 and the said cutterhead 5, is used to reduce the rotating speed and increase torque of said cutterhead 5.
Said reducing gear 4 is that a kind of power is passed on mechanism, utilizes the velocity transducer of gear, the winding number of motor is decelerated to desired winding number, and obtain bigger torque.
Further, said cut governing system 100 also comprises:
In one embodiment of the invention, said cut governing system 100 also comprises:
Wherein, first condition information of said controller 6 after according to said frequency converter 1 analyzing and processing generates said control signal.
In one embodiment of the invention, said cut governing system 100 also comprises:
First condition information and second duty parameter of said controller 6 after according to said frequency converter 1 analyzing and processing generates said control signal.
Said sensor groups 7 on can being arranged at said cutting motor 2 and said cutterhead 5; Can also be arranged on other the building block; As as described in sensor groups 7 can also be arranged on the reducing gear 4, said sensor groups 7 can be made up of a plurality of sensor elements.
Wherein, said second Ministry of worker's parameter comprises: any one or a few combination in temperature parameter, stress parameters, load parameter, vibrations parameter, the impact parameter.
After signals such as the temperature that 6 pairs of sensor groups of controller 7 detect, STRESS VARIATION, impact, load carry out analyzing and processing, send control command and give frequency converter 1.Frequency converter 1 carries out variable frequency control after receiving controller 6 orders, changes output frequency, thereby has changed the incoming frequency of cutting motor 2, realizes the control to cutting motor 2 rotating speeds and torque, improves cut efficient.
Since frequency converter 1 can be continuous the change frequency, so the size of torque also can change at any time, thereby realize self adaptation.When running into soft seam, can change too small cutting motor 2 zero loads, idle year the problem of making of centripetal force; When running into, can change the present situation that centripetal force makes cutting motor 2 overloads, overcurrent too greatly than hard coal seam.
When actual job, the cut efficient of cutterhead 5 is relevant with several factors, as the pick of the operating characteristic of cutting motor 2, cutterhead 5 arrange, path of motion of cut, coal seam characteristic etc.Here only the relation between cut rotation speed n, cut torque T, centripetal force F and the cut coal seam of cutting motor 2 is made brief analysis, provide an analytical model, can not therefore assert that it has any qualification to technical scheme of the present invention.
Given characteristic coal seam model, establishing cut efficient is Q, when setting other factors, has:
Q(function)＝Z(F，n，T，other?elements)；
Coal seam cut efficiency Model for setting up through theory analysis and experimental test, can obtain corresponding cut l-G simulation test parameter:
Q＝(q
1，q
2，q
3......q
n)
F＝(F
1，F
2，F
3......F
n)
n＝(n
1，n
2，n
3......n
n)
T＝(T
1，T
2，T
3......T
n)
Introduce constraints:
N=T (U, I, f, p......), and wherein, U-voltage, I-electric current, f-frequency, p-number of pole-pairs.
Through mathematical computations, emulation, can obtain best cut efficient Q
MaxWith corresponding f
Best, n
Best, T
BestThis shows that (n T), makes Q → Q if utilize pole-changing converter technique comprehensive adjustment cutting motor 2 operating characteristic
Max, will greatly improve drivage efficiency.
In addition, said cut governing system 100 also comprises:
The reactance filtration module is arranged on the said frequency converter 1, harmonic wave and electromagnetic interference when being used to eliminate said frequency converter 1 work.
Owing to himself operating characteristic, can produce strong electromagnetic during frequency converter 1 work to other electrical equipments in access electrical network and the loop thereof.
The present invention increases the reactance filtration module at frequency converter 1 front end; Harmonic carcellation and electromagnetic interference; Make input EMC (Electro Magnetic Compatibility, Electro Magnetic Compatibility) and electric current and voltage harmonic wave all meet the relevant authentication requirement, electrical network and other loops are not almost had negative effect.
In addition, said cut governing system 100 also comprises:
Damping device is arranged on the said frequency converter 1, the vibrations when being used to alleviate said frequency converter 1 work.
Said cut governing system 100 also comprises:
Cooling unit is arranged on the said frequency converter 1, is used for frequency converter 1 is cooled off.
Output speed, torque that technical scheme of the present invention utilizes frequency converter 1 to change cutting motor 2, thus can realize stepless time adjustment, rather than carry out speed governing or pole-changing control through frame for movement, thus can reduce the volume and the manufacture difficulty of cutting motor 2; Further, frequency converter 1, encoder 3 are monitored running status and feedback controllers 6 such as cutting motor 2 electric currents, rotating speed in real time; Sensor groups 7 is duty parameter and feedback controllers 6 such as monitoring cut temperature, STRESS VARIATION, load change, vibrations, impact in real time; Make the speed governing cut accurate more, stable; Adaptive ability is strong; Thereby can intellectual analysis, identification cut coal seam information, and regulate the coupling cut way of output automatically.
In addition, the invention also discloses a kind of development machine, said development machine is applied to coal driving field.Said development machine comprises machine body of boring machine; Also comprise the described cut governing system 100 of aforementioned each embodiment; Said cut governing system 100 is arranged in the said machine body of boring machine; Because each embodiment of front describes in detail the composition structure and the operating principle of said cut governing system 100; For length is considered; Repeat no more at this, get final product with reference to the description of front relevant portion.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a cut governing system is applied to it is characterized in that in the development machine in coal driving field, comprising:
Frequency converter is used to receive source current, and the amplitude of electric current is regulated;
Cutting motor is electrically connected with said frequency converter, is used to receive said frequency converter and regulates the electric current of exporting after the amplitude, and export corresponding torque and rotating speed according to the amplitude of electric current;
Cutterhead is driven by said cutting motor, is used for the cut coal seam.
2. cut governing system according to claim 1 is characterized in that, also comprises:
Reducing gear is arranged between said cutting motor and the said cutterhead.
3. cut governing system according to claim 2 is characterized in that, also comprises:
Controller is used to export control signal, controls said frequency converter through said control signal the amplitude of electric current is regulated.
4. according to each described cut governing system of claim 1 to 3, it is characterized in that, also comprise:
Encoder; Be arranged on the said cutting motor; The feedback end of said encoder also is connected with said frequency converter; Be used to detect the working condition of said cutting motor; And first condition information of exporting said cutting motor to said frequency converter, be sent to said controller by said frequency converter after to the first condition information analyzing and processing;
First condition information of said controller after according to said frequency converter analyzing and processing generates said control signal.
5. cut governing system according to claim 4 is characterized in that, also comprises:
Sensor groups is arranged on said cutting motor and the said cutterhead, is used to detect the operating mode of each parts, and exports second duty parameter and be sent to said controller;
First condition information and second duty parameter of said controller after according to said frequency converter analyzing and processing generates said control signal.
6. cut governing system according to claim 5 is characterized in that, said second Ministry of worker's parameter comprises: any one or a few combination in temperature parameter, stress parameters, load parameter, vibrations parameter, the impact parameter.
7. cut governing system according to claim 6 is characterized in that, also comprises:
The reactance filtration module is arranged on the said frequency converter, harmonic wave and electromagnetic interference when being used to eliminate said frequency converter work.
8. cut governing system according to claim 7 is characterized in that, also comprises:
Damping device is arranged on the said frequency converter, the vibrations when being used to alleviate said frequency converter work.
9. cut governing system according to claim 8 is characterized in that, also comprises:
Cooling unit is arranged on the said frequency converter, is used for said frequency converter is cooled off.
10. a development machine is applied to coal driving field, comprises machine body of boring machine, it is characterized in that, comprises that also said cut governing system is arranged in the said machine body of boring machine like each described cut governing system of claim 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110224435A CN102305070A (en) | 2011-08-05 | 2011-08-05 | Cutting speed regulating system and development machine |
| PCT/CN2012/073762 WO2013020384A1 (en) | 2011-08-05 | 2012-04-11 | Cutting speed regulating system and boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110224435A CN102305070A (en) | 2011-08-05 | 2011-08-05 | Cutting speed regulating system and development machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102305070A true CN102305070A (en) | 2012-01-04 |
Family
ID=45378968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110224435A Pending CN102305070A (en) | 2011-08-05 | 2011-08-05 | Cutting speed regulating system and development machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102305070A (en) |
| WO (1) | WO2013020384A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720491A (en) * | 2012-06-19 | 2012-10-10 | 安徽山河矿业装备股份有限公司 | Self-adapting speed regulating device for tunnel boring machine |
| WO2013020384A1 (en) * | 2011-08-05 | 2013-02-14 | 三一重型装备有限公司 | Cutting speed regulating system and boring machine |
| GB2495219A (en) * | 2011-09-30 | 2013-04-03 | Joy Mm Delaware Inc | Turning a miner drum at a slow maintenance speed |
| CN104579104A (en) * | 2015-01-15 | 2015-04-29 | 重庆大学 | Coal mining machine motor speed regulating method based on path optimization and speed regulating control |
| CN104682821A (en) * | 2013-11-29 | 2015-06-03 | 永济新时速电机电器有限责任公司 | Electric driving system for tunnel boring machine and tunnel boring machine |
| CN105626067A (en) * | 2016-03-22 | 2016-06-01 | 辽宁工程技术大学 | Variable frequency heading machine capable of quickly replacing cutting body and use method for heading machine |
| CN105863632A (en) * | 2016-06-14 | 2016-08-17 | 株洲中车时代装备技术有限公司 | Method and system for controlling automatic gear shifting of boom-type roadheader cutting frequency converter |
| CN114337382A (en) * | 2021-11-29 | 2022-04-12 | 中国煤炭科工集团太原研究院有限公司 | Protection method and device for mining equipment |
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| CN101050703A (en) * | 2007-05-11 | 2007-10-10 | 煤炭科学研究总院太原研究院 | Underground continuous tunnelling machine |
| CN101476541A (en) * | 2008-12-26 | 2009-07-08 | 华锐风电科技有限公司 | Independent variable oar control system and control method for wind generator set |
| CN101771305A (en) * | 2008-12-30 | 2010-07-07 | 三一重型装备有限公司 | Explosion-proof and intrinsic safety frequency conversion motor |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020384A1 (en) * | 2011-08-05 | 2013-02-14 | 三一重型装备有限公司 | Cutting speed regulating system and boring machine |
| GB2495219A (en) * | 2011-09-30 | 2013-04-03 | Joy Mm Delaware Inc | Turning a miner drum at a slow maintenance speed |
| US8608250B2 (en) | 2011-09-30 | 2013-12-17 | Joy Mm Delaware, Inc. | Slow turning drum for a miner |
| GB2495219B (en) * | 2011-09-30 | 2019-01-02 | Joy Global Underground Mining Llc | Slow turning drum for a miner |
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| CN102720491A (en) * | 2012-06-19 | 2012-10-10 | 安徽山河矿业装备股份有限公司 | Self-adapting speed regulating device for tunnel boring machine |
| WO2015078083A1 (en) * | 2013-11-29 | 2015-06-04 | 永济新时速电机电器有限责任公司 | Electric drive system for heading machine and heading machine |
| CN104682821A (en) * | 2013-11-29 | 2015-06-03 | 永济新时速电机电器有限责任公司 | Electric driving system for tunnel boring machine and tunnel boring machine |
| CN104579104A (en) * | 2015-01-15 | 2015-04-29 | 重庆大学 | Coal mining machine motor speed regulating method based on path optimization and speed regulating control |
| CN105626067A (en) * | 2016-03-22 | 2016-06-01 | 辽宁工程技术大学 | Variable frequency heading machine capable of quickly replacing cutting body and use method for heading machine |
| CN105863632A (en) * | 2016-06-14 | 2016-08-17 | 株洲中车时代装备技术有限公司 | Method and system for controlling automatic gear shifting of boom-type roadheader cutting frequency converter |
| CN105863632B (en) * | 2016-06-14 | 2018-02-02 | 株洲中车时代电气股份有限公司 | A kind of control method and system of the frequency converter fluid drive of boom-type roadheader cut |
| CN114337382A (en) * | 2021-11-29 | 2022-04-12 | 中国煤炭科工集团太原研究院有限公司 | Protection method and device for mining equipment |
| CN114337382B (en) * | 2021-11-29 | 2023-06-20 | 中国煤炭科工集团太原研究院有限公司 | Protection method and device for mining equipment |
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| Publication number | Publication date |
|---|---|
| WO2013020384A1 (en) | 2013-02-14 |
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Application publication date: 20120104 |