CN105508859A - System for controlling Lincoln pumps - Google Patents
System for controlling Lincoln pumps Download PDFInfo
- Publication number
- CN105508859A CN105508859A CN201511010398.8A CN201511010398A CN105508859A CN 105508859 A CN105508859 A CN 105508859A CN 201511010398 A CN201511010398 A CN 201511010398A CN 105508859 A CN105508859 A CN 105508859A
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- China
- Prior art keywords
- lincoln
- decision package
- unit
- oil
- pump
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/02—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2270/00—Controlling
- F16N2270/60—Pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides a system for controlling Lincoln pumps. The system for controlling the Lincoln pumps comprises a pressure input unit, a decision-making unit and a control unit, wherein the pressure input unit, the decision-making unit and the control unit are sequentially electrically connected; if the pressure value received by the pressure input unit reaches the first preset pressure threshold value, the pressure input unit outputs pressure change signals to the decision-making unit; the decision-making unit outputs stop instructions for stopping the Lincoln pumps from pumping oil if receiving the pressure change signals within the preset time period and outputs the stop instructions after the preset time period if not receiving the pressure change signals within the preset time period; the control unit controls the Lincoln pumps to stop oil pumping after receiving the stop instructions. According to the invention, the Lincoln pumps can be controlled more conveniently, Lincoln pumps timers bought from abroad can be replaced, so that the cost is saved, and maintenance and detection are convenient when breakdowns occur.
Description
Technical field
The present invention relates to Lincoln's pump field, particularly relate to a kind of system controlling Lincoln's pump.
Background technique
Lincoln's pump is for the axle class on truck, opening part such as pin class etc. need to beat the grease pump of butter lubrication, and Lincoln's pump timer is for controlling Lincoln's pump and carry out buying oil and stopping being bought oil.Along with truck runs the growth of the time limit, the spoilage of Lincoln's pump timer is along with service life is by rising, Lincoln's pump timer is import equipment, want once break down to change, lead time is very long, have impact on the utilization rate of truck, Lincoln's pump timer rehabilitation cost is high simultaneously, repair rate is low, causes cost waste.
Therefore, be necessary to improve above-mentioned defect.
Summary of the invention
Based on above problem, the present invention proposes a kind of system controlling Lincoln's pump, by comprising the pressure input unit, decision package and the control unit that are electrically connected successively; If the force value that pressure input unit receives reaches the first default pressure threshold, then pressure input unit delivery pressure changes signal to decision package; If decision package receives pressure change signal in the preset time period preset, then decision package exports the halt instruction stopping Lincoln's pump to buy oil, if or decision package does not receive pressure change signal in preset time period, then decision package exports halt instruction after exceeding preset time period; After control unit receives halt instruction, control Lincoln's pump and stop the mode of buying oil to achieve to control Lincoln's pump to be that truck is bought oil and stopping is bought oil.The system of the control Lincoln pump realized by the present invention can be convenient control Lincoln pump, and instead of the Lincoln's pump timer from foreign procurement, saved cost, and when a failure occurs it, be convenient to maintenance and detect.
On the one hand, the present invention proposes a kind of system controlling Lincoln's pump, comprising:
The pressure input unit, decision package and the control unit that are electrically connected successively;
If the force value that described pressure input unit receives reaches the first default pressure threshold, then described pressure input unit delivery pressure changes signal to described decision package;
If described decision package receives described pressure change signal in the preset time period preset, then described decision package exports the halt instruction stopping described Lincoln's pump to buy oil, if or described decision package does not receive described pressure change signal in described preset time period, then described decision package exports described halt instruction after exceeding described preset time period;
After described control unit receives described halt instruction, control described Lincoln's pump and stop buying oil.
Preferably, described system also comprises stop time selection unit, described stop time selection unit is electrically connected with described decision package, described stop time selection unit is bought oil the time for the stopping receiving input, and the described stopping time of buying oil is sent to described decision package, the described stopping time of buying oil is described Lincoln's pump from stopping buying oil to the time between again buying oil;
If described decision package receives described stopping and buying oil time and described decision package receives described pressure change signal in described preset time period, then buy oil in the time in described stopping, continuing to export described halt instruction;
If described control unit does not receive described halt instruction, then control described Lincoln's pump and buy oil.
Preferably, described system also comprises alarm unit, and described decision package, described alarm unit and external alert device are electrically connected successively;
If described decision package does not receive described pressure change signal in described preset time period, then described decision package is to described alarm unit output alarm signal, and the voltage input that described alarm unit controls described external alert device makes described external alert device report to the police.
Preferably, described alarm unit comprises diode and first relay of electrical connection, after the input end of described alarm unit receives the alarm signal that described decision package exports, described diode current flow and described first relay obtains electric, described first relay obtains and electricly makes described alarm unit export the voltage of high level to described external alert device.
Preferably, described system also comprises propagation pressure input unit, described propagation pressure input unit is electrically connected with described decision package, if the force value that described propagation pressure input unit receives equals the second default pressure threshold, then described propagation pressure input unit exports described pressure change signal to described decision package;
Described first pressure threshold is not equal to described second pressure threshold.
Preferably, described system also comprises voltage regulation unit, and described pressure input unit, described decision package and described control unit are all electrically connected with described voltage regulation unit.
Preferably, described system also comprises restarts unit, described in restart unit and be electrically connected with described decision package, described in restart after unit receives Restart Request, control described decision package and restart.
Preferably, described decision package comprises input end of manually buying oil, and input end of manually buying oil if described receives instruction of manually buying oil, then described decision package exports the open command that described Lincoln's pump is bought oil;
After described control unit receives described open command, control described Lincoln's pump and start to buy oil.
Preferably, described pressure input unit comprises pressure switch and the photo coupler of electrical connection;
Described control unit comprises triode and second relay of electrical connection;
Described decision package is single-chip microcomputer, and the input end of described single-chip microcomputer is electrically connected with the output terminal of described photo coupler, and the output terminal of described single-chip microcomputer is electrically connected with the input end of described control unit;
The input end of described single-chip microcomputer obtains the output level of described photo coupler as incoming level, and the output level of the output terminal of described single-chip microcomputer is consistent with described incoming level;
Described triode is high level conducting, and when described triode ON, described second relay obtains electric, during described triode cut-off, and described second relay electric-loss.
Preferably, described system also comprise all be connected with the output terminal of described single-chip microcomputer tutorial light of buying oil, electric tutorial light and alarm indicator lamp.
By adopting technique scheme, there is following beneficial effect:
By comprising the pressure input unit, decision package and the control unit that are electrically connected successively; If the force value that pressure input unit receives reaches the first default pressure threshold, then pressure input unit delivery pressure changes signal to decision package; If decision package receives pressure change signal in the preset time period preset, then decision package exports the halt instruction stopping Lincoln's pump to buy oil, if or decision package does not receive pressure change signal in preset time period, then decision package exports halt instruction after exceeding preset time period; After control unit receives halt instruction, control Lincoln's pump and stop the mode of buying oil to achieve to control Lincoln's pump to be that truck is bought oil and stopping is bought oil.The system of the control Lincoln pump realized by the present invention can be convenient control Lincoln pump, and instead of the Lincoln's pump timer from foreign procurement, saved cost, and when a failure occurs it, be convenient to maintenance and detect.
Accompanying drawing explanation
Fig. 1 is the block diagram of the system controlling Lincoln's pump according to an embodiment of the invention;
Fig. 2 is the circuit diagram of the stop time selection unit controlled according to an embodiment of the invention in the system of Lincoln's pump;
Fig. 3 is the circuit diagram of the alarm unit controlled according to an embodiment of the invention in the system of Lincoln's pump;
Fig. 4 is the circuit diagram of the control unit controlled according to an embodiment of the invention in the system of Lincoln's pump;
Fig. 5 is the circuit diagram of the pressure input unit controlled according to an embodiment of the invention in the system of Lincoln's pump.
Embodiment
Below in conjunction with specific embodiments and accompanying drawing, the present invention is further described in detail.It is intended to elaborate specific embodiment of the invention scheme, and do not produce any restriction to the present invention, protection scope of the present invention is as the criterion with claims.
With reference to Fig. 1, the present invention proposes a kind of system controlling Lincoln's pump, comprising:
The pressure input unit 10 be electrically connected successively, decision package 20 and control unit 30; If the force value that pressure input unit 10 receives equals the first default pressure threshold, then pressure input unit 10 delivery pressure changes signal to decision package 20; If decision package 20 receives pressure change signal in the preset time period preset, then decision package 20 exports the halt instruction stopping Lincoln's pump to buy oil, if or decision package 20 does not receive pressure change signal in preset time period, then decision package 20 exports halt instruction after exceeding preset time period; After control unit 30 receives halt instruction, control Lincoln's pump and stop buying oil.
Pressure input unit 10 can the combination of selection pressure switch or pressure switch and photo coupler.Force value is the force value in the oil filler pipe that is connected with Lincoln's pump, when the force value in oil filler pipe reaches the first default pressure threshold as being 2000PSI, pressure now in oil filler pipe is enough to allow the butter in oil filler pipe ooze, to the component oiling of truck, so now do not need Lincoln's pump to continue to buy oil and enter into oil filler pipe.
When the force value that pressure input unit receives is 2000PSI, now pressure input unit delivery pressure changes signal, after decision package 20 receives pressure change signal, the halt instruction stopping Lincoln's pump to buy oil is exported to control unit 30, after control unit 30 receives halt instruction, voltage input such as the voltage controlling Lincoln's pump A is input as low level, makes Lincoln's pump A stop buying oil.
Decision package can be single-chip microcomputer, PLC etc.
The circuit that control unit 30 can comprise triode and relay by one realizes, when decision package 30 output low level, and now triode not conducting, so relay electric-loss, output low level, now the voltage of Lincoln's pump A is input as low level, then Lincoln's pump A stops buying oil.
By comprising the pressure input unit 10, decision package 20 and the control unit 30 that are electrically connected successively; If the force value that pressure input unit 10 receives equals the first default pressure threshold, then pressure input unit 10 delivery pressure changes signal to decision package 20; If decision package 20 receives pressure change signal in the preset time period preset, then decision package 20 exports the halt instruction stopping Lincoln's pump to buy oil, if or decision package 20 does not receive pressure change signal in preset time period, then decision package 20 exports halt instruction after exceeding preset time period; After control unit 30 receives halt instruction, control Lincoln's pump and stop the mode of buying oil to achieve to control Lincoln's pump to be that truck is bought oil and stopping is bought oil.The system of the control Lincoln pump realized by the present invention can be convenient control Lincoln pump, and instead of the Lincoln's pump timer from foreign procurement, saved cost, and when a failure occurs it, be convenient to maintenance and detect.
In an embodiment wherein, system also comprises stop time selection unit 40, stop time selection unit 40 is electrically connected with decision package 20, stop time selection unit 40 is bought oil the time for the stopping receiving input, and the stopping time of buying oil is sent to decision package 20, stop the time of buying oil to be Lincoln's pump A from stopping buying oil to the time between again buying oil; If decision package 20 receives stopping and buying oil time and decision package 20 receives pressure change signal, then buy oil in the time in stopping, continuing to export halt instruction; If control unit 30 does not receive halt instruction, then control Lincoln's pump and buy oil.
When being set Lincoln's pump A by stop time selection unit 40 from stopping buying oil to the time between again buying oil, so Lincoln's pump A is after stopping is bought oil, experience stopping is bought oil after the time, continue again to buy oil, time of the buying oil general lubrication circumstances of buying oil according to repeatedly actual observation Lincoln pump is stopped to set, buy oil the time by arranging stopping, the oil of Lincoln's pump in oil filler pipe is made to be unlikely to overheap, when the oil in oil filler pipe use be less than certain value time, then continue oiling in oil filler pipe.Time selection unit 40 can be realized by a logic electronic components, and logic electronic components as shown in Figure 2, can have 8 stopping times of buying oil to set.
In an embodiment wherein, system also comprises alarm unit 50, and decision package 20, alarm unit 50 and external alert device B are electrically connected successively; If decision package 20 does not receive pressure change signal in preset time period, then decision package 20 is to alarm unit 50 output alarm signal, and the voltage input that alarm unit 50 controls external alert device B makes external alert device B report to the police.Make operator understand current force value situation by alarm unit, as the force value in oil filler pipe in 120S also less than 2000PSI time, then now need operator to understand and have passed through 120S, force value is still not enough.
In an embodiment wherein, alarm unit 20 comprises diode and first relay of electrical connection, after the input end of alarm unit receives the alarm signal that decision package exports, diode current flow and the first relay obtains electric, the first relay obtain electric make warning list 50 yuan externally warning device export the voltage of high level.
With reference to Fig. 3, alarm unit 50 can be designed as the circuit shown in Fig. 2, and resistance R12, diode D3 and relay K 2 form a parallel circuit, and resistance R9 connects with parallel circuit after connecting with plug P100.
In an embodiment wherein, system also comprises propagation pressure input unit 60, propagation pressure input unit 60 is electrically connected with decision package 20, if the force value that propagation pressure input unit 60 receives equals the second default pressure threshold, then propagation pressure input unit 60 delivery pressure changes signal to decision package 20; First pressure threshold is not equal to the second pressure threshold.
The object that arranges of propagation pressure input unit 60 to increase by the second pressure threshold, during as there being many when the oil filler pipe of Lincoln's pump, pressure threshold from the oil filler pipe close to the component of truck can be set to 1000PSI, and 2000PSI can be set to from the pressure threshold of the oil filler pipe away from the component of truck, so just can distinguish and treat, the force value in oil filler pipe can be judged more accurately.
In an embodiment wherein, system also comprises voltage regulation unit 70, and pressure input unit 10, decision package 20 and control unit 30 are all electrically connected with voltage regulation unit 70.Voltage regulation unit 70 is for providing power supply for system.Stabilized power supply exports 5V power supply, and for providing power supply for each electronic unit in system, stabilized power supply can adopt LM2596 model.
In an embodiment wherein, system also comprises restarts unit 80, restarts unit 80 and is electrically connected with decision package 20, and restart after unit 80 receives Restart Request, control decision unit 20 restarts.Restart unit 20 to restart for making decision package.General for single-chip microcomputer and PLC, all can design and restart circuit and make it can carry out restarting action or homing action.
In an embodiment wherein, decision package 20 comprises input end 201 of manually buying oil, if input end 201 of manually buying oil receives instruction of manually buying oil, then decision package 20 exports the open command that Lincoln's pump is bought oil; After control unit 30 receives open command, control Lincoln's pump A and start to buy oil.
With reference to shown in Fig. 4, in control unit 30, the parallel connection of resistance R6, diode D2 and relay K 1 forms a parallel circuit, and resistance R3 connects with triode Q1 afterwards and this parallel circuit in series.
When decision package 20 output low level, now triode Q1 not conducting, so relay K 1 dead electricity, output low level, now the voltage of Lincoln's pump A is input as low level, then Lincoln's pump A stops buying oil.
For decision package 20 for single-chip microcomputer, input end 201 of manually buying oil is set at an input end of single-chip microcomputer, when operator uses input end 201 of manually buying oil manually to input, single-chip microcomputer is forced to export high level to control unit 30, now triode Q1 conducting, relay K 1 obtains electric, exports high level, now the voltage of Lincoln's pump A is input as high level, then Lincoln's pump A starts to buy oil.
In an embodiment wherein, pressure input unit 10 comprises pressure switch P6 and the photo coupler U1 of electrical connection; Control unit 30 comprises triode R3 and second relay K 1 of electrical connection; Decision package is single-chip microcomputer, and the input end 202 of single-chip microcomputer is electrically connected with the output terminal 101 of photo coupler, and the output terminal 203 of single-chip microcomputer is electrically connected with the input end 301 of control unit 30; The input end 202 of single-chip microcomputer obtains the output level of photo coupler as incoming level, and the output level of the output terminal 203 of single-chip microcomputer is consistent with incoming level; Triode R3 is high level conducting, and when triode R3 conducting, the second relay K 1 obtains electric, when triode R3 ends, and the second relay K 1 dead electricity.
In an embodiment wherein, system also comprise all be connected with the output terminal 203 of single-chip microcomputer tutorial light of buying oil, electric tutorial light and alarm indicator lamp.
By tutorial light of buying oil, electric tutorial light and alarm indicator lamp state that current Lincoln's pump is in can display clearly.
With reference to Fig. 1, Fig. 3, Fig. 4 and Fig. 5, as most preferred embodiment of the present invention, the system controlling Lincoln pump comprises pressure input unit 10, decision package 20, control unit 30, stop time selection unit 40, alarm unit 50, propagation pressure input unit 60, voltage regulation unit 70, restarts unit 80, tutorial light of buying oil, electric tutorial light and alarm indicator lamp.
Illustrate for single-chip microcomputer for decision package 20, pressure input unit 10, control unit 30, stop time selection unit 40, alarm unit 50, propagation pressure input unit 60, voltage regulation unit 70, restart unit 80, tutorial light of buying oil, electric tutorial light and alarm indicator lamp are all electrically connected from the different pins of single-chip microcomputer.
Pressure input unit 10 comprises pressure switch P6 and the photo coupler U1 of electrical connection; Control unit 30 comprises triode R3 and second relay K 1 of electrical connection; Alarm unit 50 comprises diode D3 and first relay K 2 of electrical connection.
The input end 202 of single-chip microcomputer is electrically connected with the output terminal 101 of photo coupler electricity, and the output terminal 203 of single-chip microcomputer is electrically connected with the input end 301 of control unit 30; If when the force value that pressure switch P6 receives equals the first default pressure threshold 2000PSI, then pressure switch P6 closes, make photo coupler U1 output low level, the input voltage of the input end 202 of single-chip microcomputer becomes low level from high level, output terminal 203 output low level of single-chip microcomputer, input end 301 input low level of control unit 30, triode Q1 not conducting, second relay K 1 dead electricity, now the input voltage of Lincoln's pump A is low level, and Lincoln's pump A stops buying oil.
If in the time period 120S preset, the force value that pressure switch P6 receives still is less than the first default pressure threshold 2000PSI, now output terminal 203 output low level of single-chip microcomputer, input end 301 input low level of control unit 30, triode Q1 not conducting, second relay K 1 dead electricity, now the input voltage of Lincoln's pump A is low level, and Lincoln's pump A stops buying oil.Single-chip microcomputer exports high level to alarm unit 50 simultaneously, and the first relay K 2 obtains the voltage that electric backward external alert device B exports high level.
If the input end 201 of manually buying oil of single-chip microcomputer receives input signal, single-chip microcomputer exports high level to control unit, now triode Q1 conducting, relay K 1 obtains electric, export high level, now the voltage of Lincoln's pump A is input as high level, then Lincoln's pump A starts to buy oil.
Above-described is only principle of the present invention and preferred embodiment.It should be pointed out that for the person of ordinary skill of the art, on the basis of the principle of the invention, other modification some can also be made, also should be considered as protection scope of the present invention.
Claims (10)
1. control a system for Lincoln's pump, it is characterized in that, comprising:
The pressure input unit, decision package and the control unit that are electrically connected successively;
If the force value that described pressure input unit receives reaches the first default pressure threshold, then described pressure input unit delivery pressure changes signal to described decision package;
If described decision package receives described pressure change signal in the preset time period preset, then described decision package exports the halt instruction stopping described Lincoln's pump to buy oil, if or described decision package does not receive described pressure change signal in described preset time period, then described decision package exports described halt instruction after exceeding described preset time period;
After described control unit receives described halt instruction, control described Lincoln's pump and stop buying oil.
2. the system of control Lincoln pump according to claim 1, is characterized in that:
Described system also comprises stop time selection unit, described stop time selection unit is electrically connected with described decision package, described stop time selection unit is bought oil the time for the stopping receiving input, and the described stopping time of buying oil is sent to described decision package, the described stopping time of buying oil is described Lincoln's pump from stopping buying oil to the time between again buying oil;
If described decision package receives described stopping and buying oil time and described decision package receives described pressure change signal in described preset time period, then buy oil in the time in described stopping, continuing to export described halt instruction;
If described control unit does not receive described halt instruction, then control described Lincoln's pump and buy oil.
3. the system of control Lincoln pump according to claim 1, is characterized in that:
Described system also comprises alarm unit, and described decision package, described alarm unit and external alert device are electrically connected successively;
If described decision package does not receive described pressure change signal in described preset time period, then described decision package is to described alarm unit output alarm signal, and the voltage input that described alarm unit controls described external alert device makes described external alert device report to the police.
4. the system of control Lincoln pump according to claim 3, is characterized in that:
Described alarm unit comprises diode and first relay of electrical connection, after the input end of described alarm unit receives the alarm signal that described decision package exports, described diode current flow and described first relay obtains electric, described first relay obtains and electricly makes described alarm unit export the voltage of high level to described external alert device.
5. the system of control Lincoln pump according to claim 1, is characterized in that:
Described system also comprises propagation pressure input unit, described propagation pressure input unit is electrically connected with described decision package, if the force value that described propagation pressure input unit receives equals the second default pressure threshold, then described propagation pressure input unit exports described pressure change signal to described decision package;
Described first pressure threshold is not equal to described second pressure threshold.
6. the system of control Lincoln pump according to claim 1, is characterized in that:
Described system also comprises voltage regulation unit, and described pressure input unit, described decision package and described control unit are all electrically connected with described voltage regulation unit.
7. the system of control Lincoln pump according to claim 1, is characterized in that:
Described system also comprises restarts unit, described in restart unit and be electrically connected with described decision package, described in restart after unit receives Restart Request, control described decision package and restart.
8. the system of control Lincoln pump according to claim 1, is characterized in that:
Described decision package comprises input end of manually buying oil, and input end of manually buying oil if described receives instruction of manually buying oil, then described decision package exports the open command that described Lincoln's pump is bought oil;
After described control unit receives described open command, control described Lincoln's pump and start to buy oil.
9. the system of the control Lincoln pump according to any one of claim 1 to 8, is characterized in that:
Described pressure input unit comprises pressure switch and the photo coupler of electrical connection;
Described control unit comprises triode and second relay of electrical connection;
Described decision package is single-chip microcomputer, and the input end of described single-chip microcomputer is electrically connected with the output terminal of described photo coupler, and the output terminal of described single-chip microcomputer is electrically connected with the input end of described control unit;
The input end of described single-chip microcomputer obtains the output level of described photo coupler as incoming level, and the output level of the output terminal of described single-chip microcomputer is consistent with described incoming level;
Described triode is high level conducting, and when described triode ON, described second relay obtains electric, during described triode cut-off, and described second relay electric-loss.
10. the system of control Lincoln pump according to claim 9, is characterized in that:
Described system also comprise all be connected with the output terminal of described single-chip microcomputer tutorial light of buying oil, electric tutorial light and alarm indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511010398.8A CN105508859A (en) | 2015-12-29 | 2015-12-29 | System for controlling Lincoln pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511010398.8A CN105508859A (en) | 2015-12-29 | 2015-12-29 | System for controlling Lincoln pumps |
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| CN105508859A true CN105508859A (en) | 2016-04-20 |
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| CN201511010398.8A Pending CN105508859A (en) | 2015-12-29 | 2015-12-29 | System for controlling Lincoln pumps |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111578112A (en) * | 2020-05-14 | 2020-08-25 | 东莞市亚恩帝机床有限公司 | Automatic oil supply lubricating system and method for machine tool |
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