CN113586924A - Double-wire type centralized lubrication control system and control method - Google Patents
Double-wire type centralized lubrication control system and control method Download PDFInfo
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- CN113586924A CN113586924A CN202110871728.1A CN202110871728A CN113586924A CN 113586924 A CN113586924 A CN 113586924A CN 202110871728 A CN202110871728 A CN 202110871728A CN 113586924 A CN113586924 A CN 113586924A
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- 238000005461 lubrication Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001050 lubricating effect Effects 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000004519 grease Substances 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 74
- 230000002159 abnormal effect Effects 0.000 claims description 16
- 239000010687 lubricating oil Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 5
- 239000000314 lubricant Substances 0.000 description 10
- 230000005856 abnormality Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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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
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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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
- F16N2250/00—Measuring
- F16N2250/08—Temperature
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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
- F16N2260/00—Fail safe
- F16N2260/02—Indicating
- F16N2260/04—Oil level
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a double-wire centralized lubrication control system and a control method, wherein the control system comprises a power supply module, an input module, an output module, a temperature detection module and an MCU (microprogrammed control Unit) module, wherein the input module is used for receiving external signals, and the external signals comprise oil level signals, blockage signals, instructions and parameter setting; the output module is used for converting the control signal of the MCU module into power to output so as to spray grease for lubrication; the output module outputs alarm signals and display parameters; a temperature detection module; and the MCU module is connected with the input module, the output module and the degree detection module and automatically operates based on external signals of the input module and parameters set by a user. The embodiment of the invention utilizes the control system and the control method to control the positive and negative rotation of the motor to replace the action of the electromagnetic directional valve, solves the technical problems that the reversing resistance of the electromagnetic directional valve is increased and the service life of the electromagnetic directional valve is influenced due to high-viscosity lubricating grease, and further improves the stability and the service life of the double-wire centralized lubricating system.
Description
Technical Field
The invention relates to the technical field of lubricant supply, in particular to a two-wire centralized lubrication control system and a control method.
Background
The double-line centralized lubricating system is a main mode of centralized lubrication, and mainly comprises a lubricating pump, a reversing valve, a pressure control valve (or a differential pressure switch), a double-line distributor, an electric cabinet and two oil supply pipelines, wherein lubricating grease output by the lubricating pump is alternately conveyed to the double-line distributor through the reversing valve by the two oil supply pipelines, and is quantitatively distributed to each lubricating point through the double-line distributor. When the pressure in the oil supply pipe reaches the action pressure required by the distributor, the distributor acts, the pressure in the oil pipe continues to rise after the distributor acts, and when the pressure of the oil supply pipe enables the distributor to act (the system finishes one-time oil supply operation), the system pressure rises to the reversing pressure of the reversing valve, and the reversing valve reverses to perform secondary oil supply.
The two-wire lubrication system introduced in the summer university thesis "engineering machinery automatic lubrication technology research" of chinese university has a structure as shown in fig. 1, and the working principle is: the lubricating pump firstly supplies oil to the main oil pipeline A, and the distributor works to convey the lubricant to a lubricating point under the action of pressure. Because on-way resistance loss exists in the pipeline, all the distributors act sequentially according to the sequence of the distance from the position of the lubricating pump, after the last distributor acts, a large pressure difference is formed in the A, B pipeline, the differential pressure sensor sends out a signal, the reversing valve works, the lubricating pump supplies oil to the main oil pipeline B, the oil is circulated and reciprocated, and the lubricating system continuously conveys the lubricant to a lubricating point. The system has high bearing pressure and a plurality of lubricating points, when one lubricating point is blocked, the lubricating system works normally, and the lubrication of the rest lubricating points is not influenced.
The two-wire lubrication system has the following advantages: the working pressure is high and can reach 400bar at most; the number of the lubricating points is large, and 1000 points can be supplied with oil at the same time; long-distance transmission, taking the pump as the center, can reach 100 m; the oil quantity of each lubricating point is convenient and adjustable. Therefore, the two-wire type lubricating system is widely applied to large-scale mechanical equipment such as metallurgy, mines and the like.
However, the existing double-line centralized lubrication system also has certain defects, the reversing valve in the existing double-line lubrication system is an electromagnetic reversing valve, the oil supply of the pipeline A or the pipeline B is controlled by changing the direction of the electromagnetic reversing valve, and the double-line centralized lubrication system plays an important role and is indispensable. However, the use of the electromagnetic directional valve has certain limitation, the working environment required by the electromagnetic directional valve is a high-pressure-resistant working environment, the electromagnetic directional valve is greatly influenced by lubricating grease, the high-viscosity lubricating grease causes the reversing resistance of the electromagnetic directional valve to be increased, and further the service life of the electromagnetic directional valve is influenced, so that the double-line centralized lubricating system normally works, the double-line centralized lubricating system generally selects thin oil and grease, and can be used for NLGI3 at most, and if the high-viscosity lubricating grease is selected, the stability and the service life of the double-line centralized lubricating system can be influenced. In addition, the electromagnetic directional valve is of an oil-immersed structure, and lubricating grease is easy to harden after entering the electromagnetic directional valve, so that the fault of the electromagnetic directional valve is caused, and the stability and the service life of the double-wire centralized lubricating system are also influenced.
The Chinese invention application (CN202011355085.7) discloses a lubricant supply device for a double-line centralized lubrication system, which cancels an electromagnetic directional valve in the double-line centralized lubrication system, and comprises a lubricant reservoir, a pump seat, a driving motor and a reversing device; the lubricant oil reservoir is fixedly arranged at the top of the pump base and is communicated with a lubricant oil inlet of the pump base through an oil outlet of the lubricant oil reservoir; a plunger pump is arranged in the pump seat, a plunger pump cavity is arranged in the plunger pump, and the plunger pump cavity is communicated with the lubricant inlet; the driving motor is fixedly arranged at the bottom of the pump base and used for driving the rotating shaft to drive the plunger pump to pump oil; the reversing assembly is arranged in the pump base to control the opening and closing between the oil inlet and the oil outlet or between the oil return port and the oil outlet; the stirrer adopts a bidirectional oil pressing structure, so that the oil pressing effect on the pump core opening can be ensured during forward and reverse rotation. Although the above invention application discloses the structural composition of the lubricant supply device of the two-line lubrication system, the two-line centralized lubrication control system and the control method are not described, and no series detection means is provided in actual use to ensure the normal operation of the device.
Based on the technical problems existing in the dual-line centralized lubrication system, no relevant solution is provided; there is therefore a pressing need to find effective solutions to the above problems.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a double-wire centralized lubrication control system and a control method, which cancels the arrangement of an electromagnetic directional valve, adopts a mechanical directional device arranged in a lubrication pump, utilizes the control system and the control method to control the positive and negative rotation of a motor to replace the action of the electromagnetic directional valve, solves the technical problems that the directional resistance of the electromagnetic directional valve is increased and the service life of the electromagnetic directional valve is influenced due to high-viscosity lubricating grease, and further improves the stability and the service life of the double-wire centralized lubrication system.
The technical scheme of the embodiment of the invention is as follows:
the embodiment of the invention provides a double-wire centralized lubrication control system, which comprises a power module, an input module, an output module, a temperature detection module and an MCU module; the input module is connected to the MCU module and configured to receive an external signal, where the external signal includes but is not limited to: setting oil level signals, blockage signals, instructions and parameters; the output module is connected with the MCU module and used for converting the control signal of the MCU module into power to output so as to spray grease for lubrication; the output module outputs alarm signals and display parameters; the temperature detection module is connected with the MCU module, the MCU module obtains the current temperature through the temperature detection module, and the MCU module stops running when the temperature is lower than the set temperature. The MCU module is connected with the input module, the output module and the temperature detection module and automatically operates based on external signals of the input module and parameters set by a user.
Further, the LED display and overcurrent detection module is further included, and the LED displays the character code number capable of displaying the output alarm signal and the output display parameters.
Further, the input module adopts a photoelectric coupling chip.
Further, the number of the jam signals at least comprises 1, and a sensor for detecting the jam sends out the signals.
Furthermore, the MCU module interacts with an upper computer through a CAN bus.
Further, the power supply module is connected with a wide voltage input of DC 11-36V.
Further, the set temperature is a freezing temperature of the lubricating oil.
Correspondingly, the embodiment of the invention also provides a two-wire centralized lubrication control method, which is applied to the two-wire centralized lubrication control system and comprises the following processes:
s0: powering on and starting the equipment, and setting a lubrication period value T0 and an interval time T; detecting a low oil level signal and temperature, and carrying out the next step when the detection is normal; stopping the machine when the temperature is detected abnormally;
s1: the motor rotates forwards, enters a motor forward rotation operation mode, and detects a pressure signal of the main oil pipeline A; when the main oil pipeline A reaches the pressure value, stopping the motor, and maintaining the pressure for 5 s;
s2: the motor rotates reversely, enters a motor reverse rotation operation mode, and detects a pressure signal of the main oil pipeline B; when the main oil pipeline B reaches the pressure value, stopping the motor, and maintaining the pressure for 5 s;
s3: the above S1 and S1 are a cycle, and the cycle is completed, and the number of the lubricating cycles T1 is added with 1; when the lubricating period number T1 is equal to the set lubricating period value T0, the motor is depressurized after stopping for 2S, and the system enters an intermittent mode;
s4: entering an intermittent mode, timing, returning to S1 when the intermittent time t is over, repeating the steps S1-S3, and circularly operating again;
wherein, the control system monitors a low oil level signal, a blockage signal, temperature, motor current, whether a pressure signal of the main oil pipeline A can be detected and whether a pressure signal of the main oil pipeline B can be detected in the running process of S1-S4;
when the oil is lower than the minimum value of the oil, judging the oil is abnormal, and outputting a corresponding alarm code;
when the temperature is lower than the solidification temperature of the lubricating oil, judging that the lubricating oil is abnormal, stopping the equipment, and outputting a corresponding alarm code;
when the actual current of the motor is detected to be larger than the rated current of the motor, the motor is judged to be abnormal, the equipment stops running, and a corresponding alarm code is output;
when the blocking signal is detected, judging that the blocking signal is abnormal, stopping the equipment, and outputting a corresponding alarm code;
when the pressure signal of the main oil pipeline A is not detected within the set time, the motor stops running and outputs a corresponding alarm code;
and if the pressure signal of the main oil pipeline B is not detected within the set time, the motor stops running and outputs a corresponding alarm code.
The embodiment of the invention achieves the following beneficial effects:
the embodiment of the invention utilizes the control system and the control method to control the positive and negative rotation of the motor to replace the action of the electromagnetic directional valve, solves the technical problems that the reversing resistance of the electromagnetic directional valve is increased and the service life of the electromagnetic directional valve is influenced due to high-viscosity lubricating grease, and further improves the stability and the service life of the double-wire centralized lubricating system. The embodiment of the invention adopts electric control intelligent control, enters automatic cycle operation by setting a lubrication period value and intermittent time, monitors an oil level signal, a blocking signal, temperature, motor current and the like in the operation process, stops equipment and enters a corresponding alarm state when abnormality is found, and transmits a real-time state and parameters to an upper computer or an LED screen of the equipment through a CAN signal; when the ambient temperature is too low, the oil level is too low, the oil circuit is blocked, the oil circuit pressure is abnormal, the motor overflows and the like, the control system and the control method which are added with a series of detection means ensure the normal operation of the equipment, are closer to the actual use working condition of the equipment, and are worthy of popularization and application.
Drawings
Fig. 1 is a schematic diagram of a two-wire centralized lubrication system in the prior art.
Fig. 2 is a schematic wire-frame diagram of a two-wire centralized lubrication control system according to an embodiment of the present invention.
Fig. 3 is a flow chart of a two-wire centralized lubrication control method according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the present invention by those skilled in the art, specific embodiments thereof are described below with reference to the accompanying drawings.
It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
As shown in figure 2, the invention provides a double-wire centralized lubrication control system, which adopts electric control intelligent control, enters automatic cycle operation by setting the number of lubrication cycles and the intermittent time, monitors oil level signals, blockage signals, temperature, motor current and the like in the operation process, and when abnormity is found, equipment enters a corresponding alarm state and transmits real-time states and parameters to an upper computer or an LED screen of the equipment for display through a CAN signal.
The lubrication control system comprises a power supply module, an input module, an output module, a temperature detection module, an LED display module, an overcurrent detection module and an MCU module.
The functions of the modules are as follows:
a power supply module: the voltage-controlled power supply is connected with the MCU module, can be directly connected with DC11-36V wide voltage input, and processes an input power supply through measures such as filtering, directional current and the like so as to prevent negative effects on a control system caused by electrode reverse connection, voltage fluctuation, surge impact and the like.
An input module: and the MCU module is connected with the MCU module and used for receiving external signals, wherein the external signals include but are not limited to: oil level signal, blockage signal, command, parameter setting. Photoelectric coupling chips can be adopted, and high-voltage and low-voltage isolation is effectively achieved.
An output module: the MCU module is connected with the control circuit and is used for converting the control signal of the MCU module into power output for grease spraying lubrication; the output module outputs alarm signals, display parameters and the like.
A temperature detection module: and the MCU module is connected with the MCU module, acquires the current temperature through the temperature detection module, and stops running when the temperature is lower than the set temperature. The set temperature is the freezing temperature of the lubricating oil. Specifically, in the embodiment, the temperature is set to be-15 ℃, and the operation is stopped when the temperature is below-15 ℃, so that the abnormality of equipment caused by solidification of grease is prevented.
And the MCU module is connected with the input module, the output module and the temperature detection module and automatically operates based on external signals of the input module and parameters set by a user. CAN interact with an upper computer through a CAN bus.
LED display: and the MCU module is connected with the display module and can display the result of the output module, namely the character code of the alarm signal and the display parameter.
And an overcurrent detection module: whether the actual current of the motor is larger than the rated current of the motor or not is detected, and if the actual current exceeds the rated current, the motor is easily burnt out, so that the equipment cannot work. The overcurrent detection module feeds back the abnormal condition to the control system, so that the motor stops working before being burnt out, and the motor is protected.
The number of jam signals includes at least 1, and a sensor for detecting jam sends out signals. Specifically, in this embodiment, there are 4 occlusion signals, including occlusion signal 1, occlusion signal 2, occlusion signal 3, and occlusion signal 4.
As shown in fig. 3, an embodiment of the present invention further provides a two-wire centralized lubrication control method, including the following steps:
s0: powering on and starting the equipment, and setting a lubrication period value T0 and an interval time T; starting low oil level signal detection and temperature detection, and carrying out the next step without problems; when the oil level is too low, an alarm code 'EL' is output to prompt a user; when the temperature is lower than-15 ℃, the equipment stops running, and an alarm code 'ES 6' is output to prompt a user;
s1: step S0, when the motor is normal, the motor rotates forwards, the motor enters a forward rotation running mode, and a pressure signal of the main oil pipeline A is detected; when the main oil pipeline A reaches the pressure value, stopping the motor, and maintaining the pressure for 5 s; if the pressure signal of the main oil pipeline A is not detected within the set time, the motor stops running and outputs an alarm code number 'EP 1';
s2: step S1, when the motor is normal, the motor rotates reversely, the motor enters a reverse rotation running mode, and a pressure signal of the main oil pipeline B is detected; when the main oil pipeline B reaches the pressure value, stopping the motor, and maintaining the pressure for 5 s; if the pressure signal of the main oil pipeline B is not detected within the set time, the system stops running and outputs an alarm code number 'EP 2';
s3: the above S1 and S1 are a cycle, and the cycle is completed, and the number of the lubricating cycles T1 is added with 1; when the lubricating period number T1 is equal to the set lubricating period value T0, the motor is depressurized after stopping for 2S, and the system enters an intermittent mode;
s4: entering the intermittent mode, counting time, returning to S1 when the intermittent time t is over, repeating the steps S1-S3, and circulating again.
Wherein, the control system monitors a low oil level signal, a blockage signal, temperature and motor current in the running process of S1-S4;
when the oil is lower than the minimum value of the oil, judging the oil is abnormal, outputting an alarm code 'EL', and reminding a user of adding lubricating oil in time;
when the temperature is lower than-15 ℃, judging that the equipment is abnormal, stopping running the equipment, and outputting an alarm code 'ES 6';
when the actual current of the motor is detected to be larger than the rated current of the motor, the motor is judged to be abnormal, the equipment stops running, and an alarm code number 'ES 7' is output;
when the blockage signal 1 is detected, judging that the blockage signal is abnormal, stopping the operation of the equipment, and outputting an alarm code 'ES 1';
when the blocking signal 2 is detected, judging that the device is abnormal, stopping running the device, and outputting an alarm code 'ES 2';
when a blocking signal 3 is detected, judging that the device is abnormal, stopping running the device, and outputting an alarm code 'ES 3';
when the jam signal 4 is detected, the abnormality is determined, the apparatus stops operating, and an alarm code "ES 4" is output.
And (6) ending.
The control system parameters are set as follows:
| serial number | Item | Parameter(s) | Unit of |
| 1 | Low temperature protection value | 0～-50 | ℃ |
| 2 | Current protection value | 1～5 | A |
| 3 | A pipeline under-pressure detection time | 1～9999 | Second of |
| 4 | B pipeline under-pressure detection time | 1～9999 | Second of |
| 5 | Period of operation | 1～9999 | Next time |
| 6 | Time of rest | 1～9999 | Is divided into |
The alarm code is set as follows:
| serial number | Item | (Code) |
| 1 | Low oil level alarm | EL |
| 2 | Pipeline under-pressure alarm | EP1 |
| 3 | B pipeline under-pressure alarm | EP2 |
| 4 | Jamming signal 1 alarm | ES1 |
| 5 | Jamming signal 2 alarm | ES2 |
| 6 | Jamming signal 3 alarm | ES3 |
| 7 | Jam signal 4 alarm | ES4 |
| 8 | Low temperature alarm | ES6 |
| 9 | Motor overcurrent alarm | ES7 |
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. A two-wire centralized lubrication control system is characterized in that: the device comprises a power supply module, an input module, an output module, a temperature detection module and an MCU module;
the input module is connected to the MCU module and configured to receive an external signal, where the external signal includes but is not limited to: setting oil level signals, blockage signals, instructions and parameters;
the output module is connected with the MCU module and used for converting the control signal of the MCU module into power to output so as to spray grease for lubrication; the output module outputs alarm signals and display parameters;
the temperature detection module is connected with the MCU module, the MCU module acquires the current temperature through the temperature detection module, and the MCU module stops running when the temperature is lower than the set temperature;
the MCU module is connected with the input module, the output module and the temperature detection module and automatically operates based on external signals of the input module and parameters set by a user.
2. The two-wire centralized lubrication control system according to claim 1, wherein: the LED display and overcurrent detection module is further included, and the LED displays the character code number capable of displaying the output alarm signal and the output display parameter.
3. The two-wire centralized lubrication control system according to claim 1, wherein: the input module adopts a photoelectric coupling chip.
4. The two-wire centralized lubrication control system according to claim 1, wherein: the number of the jam signals at least comprises 1, and a sensor for detecting the jam sends out signals.
5. The two-wire centralized lubrication control system according to claim 1, wherein: and the MCU module is interacted with an upper computer through a CAN bus.
6. The two-wire centralized lubrication control system according to claim 1, wherein: the power supply module is connected with a wide voltage input of DC 11-36V.
7. The two-wire centralized lubrication control system according to claim 1, wherein: the set temperature is the freezing temperature of the lubricating oil.
8. A control method for double-line centralized lubrication is characterized in that: can be applied to the two-wire centralized lubrication control system of any one of the above claims 1 to 7; the control method comprises the following processes:
s0: powering on and starting the equipment, and setting a lubrication period value T0 and an interval time T; detecting a low oil level signal and temperature, and carrying out the next step when the detection is normal; stopping the machine when the temperature is detected abnormally;
s1: the motor rotates forwards, enters a motor forward rotation operation mode, and detects a pressure signal of the main oil pipeline A; when the main oil pipeline A reaches the pressure value, stopping the motor, and maintaining the pressure for 5 s;
s2: the motor rotates reversely, enters a motor reverse rotation operation mode, and detects a pressure signal of the main oil pipeline B; when the main oil pipeline B reaches the pressure value, stopping the motor, and maintaining the pressure for 5 s;
s3: the above S1 and S1 are a cycle, and the cycle is completed, and the number of the lubricating cycles T1 is added with 1; when the lubricating period number T1 is equal to the set lubricating period value T0, the motor is depressurized after stopping for 2S, and the system enters an intermittent mode;
s4: entering an intermittent mode, timing, returning to S1 when the intermittent time t is over, repeating the steps S1-S3, and circularly operating again;
wherein, the control system monitors a low oil level signal, a blockage signal, temperature, motor current, whether a pressure signal of the main oil pipeline A can be detected and whether a pressure signal of the main oil pipeline B can be detected in the running process of S1-S4;
when the oil is lower than the minimum value of the oil, judging the oil is abnormal, and outputting a corresponding alarm code;
when the temperature is lower than the solidification temperature of the lubricating oil, judging that the lubricating oil is abnormal, stopping the equipment, and outputting a corresponding alarm code;
when the actual current of the motor is detected to be larger than the rated current of the motor, the motor is judged to be abnormal, the equipment stops running, and a corresponding alarm code is output;
when the blocking signal is detected, judging that the blocking signal is abnormal, stopping the equipment, and outputting a corresponding alarm code;
when the pressure signal of the main oil pipeline A is not detected within the set time, the motor stops running and outputs a corresponding alarm code;
and if the pressure signal of the main oil pipeline B is not detected within the set time, the motor stops running and outputs a corresponding alarm code.
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| CN112303464A (en) * | 2019-08-02 | 2021-02-02 | 上海梅山钢铁股份有限公司 | Grease centralized lubrication system |
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