CN205078272U - Entry driving machine cut arm automatic speed adjustment system - Google Patents
Entry driving machine cut arm automatic speed adjustment system Download PDFInfo
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- CN205078272U CN205078272U CN201520832741.6U CN201520832741U CN205078272U CN 205078272 U CN205078272 U CN 205078272U CN 201520832741 U CN201520832741 U CN 201520832741U CN 205078272 U CN205078272 U CN 205078272U
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Abstract
The utility model relates to an entry driving machine cut arm automatic speed adjustment system belongs to colliery extractive equipment application technique field. The utility model discloses a cut motor, in the current sensor, PLC controller and electro -hydraulic proportional valve, current sensor detects cut power of motor state, and will detect signal output to PLC controller, through the analysis of PLC controller, calculate, output control signal, through proportional amplifier with the signal amplification, then control electro -hydraulic proportional valve regulated stream flow, realize control cutting units vertical lift hydraulic cylinder and level gyration hydraulic cylinder's swing speed, change the cutterhead load through adjustment hydraulic cylinder swing speed, thereby realize the permanent power output of cut motor. This control system can be according to the load of load automatically regulated cut motor, is applicable to the tunnel working face of the different hardness of cut, has solved to transship the structure and electric component damage that leads to because of the cut motor. The utility model discloses in can be used to driving machinery or other motor drive hydraulic control device, there is very big application prospect.
Description
Technical field
The utility model relates to a kind of cutting arm of tunneling machine automatic speed regulation system, belongs to colliery extractive equipment applied technical field.
Background technology
At present, most of development machine is that in-local controls, inefficiency, and there is potential safety hazard.Intellectual remote controlling development machine can realize the few peopleization or unmanned of fully mechanized workface, work safety, efficient, and extremely market is favored.
Combine in pick process, because coal petrography hardness is different, the hydraulic jack that constant speed swings can cause cutting units load unstable, and cutting motor power output is unstable, easily makes cutting motor transship or vexed car, and the structural member caused and electricity piece damage.
Summary of the invention
The purpose of this utility model is to provide a kind of cutting arm of tunneling machine automatic speed regulation system, and this device can avoid cutting motor to damage because of overload, improves the safety of electrical system.
The technical scheme that the utility model solves the employing of its technical problem is:
The utility model comprises: cutting motor, current sensor, PLC, electro-hydraulic proportional valve, described current sensor is connected with cutting motor, PLC respectively, PLC is connected with two proportional amplifiers respectively, and two proportional amplifiers are connected with vertical lift hydraulic jack and horizontal rotation hydraulic jack respectively.
Described current sensor detects cutting motor curent change, and detection signal is outputted to PLC, and PLC sends corresponding control signal, amplifies control signal through proportional amplifier, controls electro-hydraulic proportional valve adjustment flow.
Described current sensor can detect cutting motor curent change situation, can be built in cutting motor, or be placed on cutting motor.
Described PLC can the curtage signal that exports of received current sensor, calculates by analysis, exports and control curtage signal.
The curtage signal that PLC can export by described proportional amplifier amplifies, and namely increases curtage signal power, is enough to control electro-hydraulic proportional valve.
Described electro-hydraulic proportional valve can reception control signal, adjustment hydraulic jack flow, thus changes hydraulic jack swing speed.
The beneficial effects of the utility model are, the utility model is in cutting course, when coal petrography hardness increases, cutting motor load increases, power output increases, current sensor detects that cutting motor power increases, power is increased signal transmission to PLC, after PLC Received signal strength, calculate by analysis, export control signal, through proportional amplifier amplifying signal power, control electro-hydraulic proportional valve and reduce flow, reduce hydraulic jack swing speed, cutting motor load is reduced, and cutting motor power output is recovered; Otherwise control electro-hydraulic proportional valve augmented flow, increase hydraulic jack swing speed, make cutting motor load stabilization, power output is constant.This system available protecting cutting motor damages because of overload, and effectively reduces the fault rate of electrical system, and complete machine runs invariable power, safety and stability.
The utility model can be used for, in road heading machinery or other motor driven liquid pressure control device, having very large application prospect.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model control principle block diagram.
Detailed description of the invention
Embodiment 1
As Fig. 1, the utility model current sensor 2 is connected with cutting motor 1, PLC 3 respectively, and PLC 3 is connected with two proportional amplifiers 4 respectively, and two proportional amplifiers 4 are connected with vertical lift hydraulic jack and horizontal rotation hydraulic jack respectively.Current sensor 2 detects cutting motor 1 curent change, and detection signal is outputted to PLC 3, PLC 3 passes through analytical calculation, export and control curtage signal, and amplify control signal through proportional amplifier 4, then control electro-hydraulic proportional valve 5 and adjust flow, thus the swing speed of adjustment cutting units vertical lift hydraulic jack and horizontal rotation hydraulic jack, the load of adjustment cutterhead, realizes cutting motor 1 power output constant.
The course of work
Cutting arm of tunneling machine normality adopts acquiescence swing speed cut, and when coal petrography hardness increases, cutting motor 1 load increases, and cutting motor 1 increases electric current to provide enough power.When cutting motor 1 electric current increases to certain value, current sensor 2 can send a power and increase signal to PLC 3, PLC 3 carries out analytical calculation according to the signal characteristic received, what export correspondence controls signal to proportional amplifier 4, control signal passing ratio amplifier 4 amplifies control signal, then electro-hydraulic proportional valve 5 is passed to, electro-hydraulic proportional valve 5 receives signal, reduce vertical lift hydraulic jack 6 or horizontal rotation hydraulic jack 7 flow, thus reduce vertical lift hydraulic jack 6 or horizontal rotation hydraulic jack 7 responsiveness, reduce cutting motor load, cutting motor power output is reduced, otherwise electro-hydraulic proportional valve 5 can receive the signal increasing hydraulic jack flow, increase vertical lift hydraulic jack 6 or horizontal rotation hydraulic jack 7 responsiveness, increase cutting motor load, cutting motor power output is increased.
In the course of work, according to coal petrography hardness, adjustment hydraulic jack swing speed, keeps cutting motor 1 constant power output in good time, and complete machine runs invariable power, guarantees electrical system safety and stability.
Claims (6)
1. a cutting arm of tunneling machine automatic speed regulation system, comprise: cutting motor (1), current sensor (2), PLC (3), electro-hydraulic proportional valve (5), it is characterized in that, described current sensor (2) is connected with cutting motor (1), PLC (3) respectively, PLC (3) is connected with two proportional amplifiers (4) respectively, and two proportional amplifiers (4) are connected with vertical lift hydraulic jack (6) and horizontal rotation hydraulic jack (7) respectively.
2. a kind of cutting arm of tunneling machine automatic speed regulation system according to claim 1, it is characterized in that, described current sensor (2) detects cutting motor (1) curent change, and detection signal is outputted to PLC (3), PLC (3) sends corresponding control signal, amplify control signal through proportional amplifier (4), control electro-hydraulic proportional valve (5) adjustment flow.
3. a kind of cutting arm of tunneling machine automatic speed regulation system according to claim 1 and 2, is characterized in that, described current sensor (2) is built in cutting motor (1), or is placed on cutting motor (1).
4. a kind of cutting arm of tunneling machine automatic speed regulation system according to claim 1 and 2, it is characterized in that, described PLC (3) can the curtage signal that exports of received current sensor (2), calculates by analysis, exports and control curtage signal.
5. a kind of cutting arm of tunneling machine automatic speed regulation system according to claim 1 and 2, it is characterized in that, the curtage signal that PLC (3) can export by described proportional amplifier (4) amplifies, and namely increases curtage signal power, is enough to control electro-hydraulic proportional valve (5).
6. a kind of cutting arm of tunneling machine automatic speed regulation system according to claim 1 and 2, is characterized in that, described electro-hydraulic proportional valve (5) can reception control signal, adjustment flow, thus changes hydraulic jack swing speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832741.6U CN205078272U (en) | 2015-10-26 | 2015-10-26 | Entry driving machine cut arm automatic speed adjustment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520832741.6U CN205078272U (en) | 2015-10-26 | 2015-10-26 | Entry driving machine cut arm automatic speed adjustment system |
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| Publication Number | Publication Date |
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| CN205078272U true CN205078272U (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520832741.6U Active CN205078272U (en) | 2015-10-26 | 2015-10-26 | Entry driving machine cut arm automatic speed adjustment system |
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| CN (1) | CN205078272U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120115A (en) * | 2017-06-19 | 2017-09-01 | 中国矿业大学 | A kind of adaptive cutting control system of development machine and method |
| CN107269275A (en) * | 2017-06-15 | 2017-10-20 | 中国矿业大学(北京) | A kind of boom-type roadheader cutting arm slew rate adaptive control system and method |
| CN109435074A (en) * | 2018-12-29 | 2019-03-08 | 福建省晋江市东石肖下连盛机械配件厂（普通合伙） | Saw control device and its working method in mine |
| CN111308954A (en) * | 2020-02-28 | 2020-06-19 | 鞍山紫竹科技型钢有限公司 | Constant power control system of hot sawing machine |
| CN114183158A (en) * | 2021-11-15 | 2022-03-15 | 中铁工程装备集团隧道设备制造有限公司 | Motor protection control system and method for cantilever excavator |
-
2015
- 2015-10-26 CN CN201520832741.6U patent/CN205078272U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269275A (en) * | 2017-06-15 | 2017-10-20 | 中国矿业大学(北京) | A kind of boom-type roadheader cutting arm slew rate adaptive control system and method |
| CN107269275B (en) * | 2017-06-15 | 2019-02-12 | 中国矿业大学(北京) | A kind of boom-type roadheader cutting arm slew rate adaptive control system and method |
| CN107120115A (en) * | 2017-06-19 | 2017-09-01 | 中国矿业大学 | A kind of adaptive cutting control system of development machine and method |
| CN109435074A (en) * | 2018-12-29 | 2019-03-08 | 福建省晋江市东石肖下连盛机械配件厂（普通合伙） | Saw control device and its working method in mine |
| CN111308954A (en) * | 2020-02-28 | 2020-06-19 | 鞍山紫竹科技型钢有限公司 | Constant power control system of hot sawing machine |
| CN114183158A (en) * | 2021-11-15 | 2022-03-15 | 中铁工程装备集团隧道设备制造有限公司 | Motor protection control system and method for cantilever excavator |
| CN114183158B (en) * | 2021-11-15 | 2023-09-01 | 中铁工程装备集团隧道设备制造有限公司 | Cantilever development machine motor protection control system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |