CN116412177A - Intelligent hydraulic system and method - Google Patents
Intelligent hydraulic system and method Download PDFInfo
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- CN116412177A CN116412177A CN202111638753.1A CN202111638753A CN116412177A CN 116412177 A CN116412177 A CN 116412177A CN 202111638753 A CN202111638753 A CN 202111638753A CN 116412177 A CN116412177 A CN 116412177A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000008859 change Effects 0.000 claims abstract description 21
- 239000003921 oil Substances 0.000 claims abstract description 19
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000002411 adverse Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an intelligent hydraulic system and a method, wherein the intelligent hydraulic system comprises the following components: the hydraulic pump is used for drawing hydraulic oil in the oil tank and providing pressure for a load through a hydraulic pipeline; the pressure gauge is used for measuring the pressure value in the hydraulic pipeline; the control system is connected with the hydraulic pump and the pressure gauge and is used for collecting data and controlling the hydraulic pump according to the data; wherein the data includes an operating state of the hydraulic pump and a pressure value of the pressure gauge. The intelligent control system can intelligently control the hydraulic system, can provide accurate and stable pressure for the hydraulic system, does not need to open the hydraulic pump for a long time, prolongs the service life of components and parts, and overcomes adverse effects caused by load change hydraulic pressure and system leakage. Simple implementation, reliable operation and convenient popularization.
Description
Technical Field
The invention belongs to the field of fluid pressure control, and particularly relates to an intelligent hydraulic system and method.
Background
The hydraulic system functions to increase the force by varying the pressure. A complete hydraulic system consists of five parts, namely power elements, actuators, control elements, auxiliary elements (accessories) and hydraulic oil. Hydraulic systems can be divided into two categories: a hydraulic drive system and a hydraulic control system. The hydraulic transmission system takes power transmission and movement as main functions. Hydraulic control systems are designed to provide a hydraulic system output that meets certain performance requirements (particularly dynamic performance), and are generally referred to as hydraulic transmission systems.
In a hydraulic system, it is difficult to maintain a stable pressure with a change in load. One current hydraulic control method is to turn on the hydraulic pump at all times, continuously pressurize the hydraulic pump, and continuously overflow the hydraulic pump through an overflow valve. In the method, the hydraulic system is in a high-pressure operation state for a long time, and components are in an operation state all the time, so that the service lives of the overflow valve and other components are reduced. Another hydraulic control method is to turn off the hydraulic pump when the specified pressure is reached, stop the pressurization, but at the moment of stopping the hydraulic pump, the pressure generally drops by a certain value, so that the use requirement may not be met; moreover, the hydraulic pump is stopped for a long time, and the pressure possibly cannot meet the use requirement along with the load change and the leakage of the hydraulic system.
Disclosure of Invention
Aiming at the problems, the invention adopts the following technical scheme: an intelligent hydraulic system, the intelligent hydraulic system comprising:
the hydraulic pump is used for drawing hydraulic oil in the oil tank and providing pressure for a load through a hydraulic pipeline;
the pressure gauge is used for measuring the pressure value in the hydraulic pipeline;
the control system is connected with the hydraulic pump and the pressure gauge and is used for collecting data and controlling the hydraulic pump according to the data; wherein the data includes an operating state of the hydraulic pump and a pressure value of the pressure gauge.
Optionally, the control system includes:
the acquisition system is connected with the hydraulic pump and the pressure gauge and is used for acquiring the working state of the hydraulic pump and the pressure value of the pressure gauge;
the pressure stability judging system is connected with the collecting system and is used for judging whether the load is in a pressure stability state according to the change of the pressure value when the working state of the hydraulic pump is a pressurized state;
and the flow control system is connected with the pressure stability judging system and is used for controlling the displacement of the hydraulic pump according to the pressure value when the judging result of the pressure stability judging system is that the pressure is unstable.
Optionally, the pressure stability judging system includes, when judging whether the load is in a pressure stable state:
closing the hydraulic pump when the pressure value reaches a first specified pressure;
and judging whether the current pressure value meets the working requirement after the set time length is elapsed, if so, judging that the pressure is stable, otherwise, judging that the pressure is unstable.
Alternatively, if the pressure value exceeds a specified range in the set period of time at which the pressure decreases, it is determined that the pressure is unstable.
Optionally, the flow control system includes, in controlling the displacement of the hydraulic pump according to the pressure value:
judging whether the current pressure value exceeds a second designated pressure or not;
if the second specified pressure is exceeded, adjusting the hydraulic pump at a high rotational speed to a low rotational speed;
and if the second specified pressure is not exceeded, adjusting the hydraulic pump with low rotation speed to high rotation speed.
Optionally, the control system further comprises an automatic pressure compensation judging system connected with the acquisition system and used for judging whether pressure compensation is needed according to the change of the pressure value when the working state of the hydraulic pump is a non-pressurized state.
Optionally, the intelligent hydraulic system further comprises an overflow valve connected with the oil tank;
when the pressure value measured by the pressure gauge exceeds the rated pressure of the system, the control system controls the overflow valve to be opened, so that part of hydraulic oil in the hydraulic pipeline and the load flows into the oil tank.
Optionally, the intelligent hydraulic system further comprises: and the command system is connected with the control system, and the control system sends a control command to the hydraulic pump through the command system.
And, an intelligent hydraulic method comprising the steps of:
measuring a pressure value in a hydraulic pipeline when the hydraulic pump draws hydraulic oil in an oil tank and provides pressure to a load through the hydraulic pipeline;
collecting the pressure value and the working state of the hydraulic pump in real time;
and controlling the hydraulic pump according to the pressure value and the working state of the hydraulic pump.
Optionally, in the controlling the hydraulic pump according to the pressure value and the working state of the hydraulic pump, the method includes the following steps:
if the working state of the hydraulic pump is a pressurized state, judging whether the load is in a pressure stable state according to the change of the pressure value;
and if the judgment result is that the pressure is unstable, controlling the displacement of the hydraulic pump according to the pressure value.
Optionally, in the determining whether the load is in a pressure stable state, the method includes the steps of:
closing the hydraulic pump when the pressure value reaches a first specified pressure;
and judging whether the current pressure value meets the working requirement after the set time length is elapsed, if so, judging that the pressure is stable, otherwise, judging that the pressure is unstable.
Alternatively, if the pressure value exceeds a specified range in the set period of time at which the pressure decreases, it is determined that the pressure is unstable.
Optionally, in said controlling the displacement of the hydraulic pump according to the pressure value, the method comprises the steps of:
judging whether the current pressure value exceeds a second designated pressure or not;
if the second specified pressure is exceeded, adjusting the hydraulic pump at a high rotational speed to a low rotational speed;
and if the second specified pressure is not exceeded, adjusting the hydraulic pump with low rotation speed to high rotation speed.
Optionally, the intelligent hydraulic method further comprises the following steps:
and if the working state of the hydraulic pump is in a non-pressurized state, controlling the working state of the hydraulic pump according to the change of the pressure value.
Optionally, the intelligent hydraulic method further comprises the following steps:
and if the pressure value exceeds the rated pressure of the system, opening an overflow valve connected with the oil tank, so that part of hydraulic oil in the hydraulic pipeline and the load flows into the oil tank.
By adopting the technical scheme, the invention has the following beneficial effects: the intelligent control can be carried out on the hydraulic system, accurate and stable pressure can be provided for the hydraulic system, the hydraulic pump is not required to be started for a long time, the service life of components is prolonged, and adverse effects caused by load change hydraulic pressure and system leakage are overcome. Simple implementation, reliable operation and convenient popularization.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates an overall block diagram of an intelligent hydraulic system according to an embodiment of the present invention;
FIG. 2 shows a block diagram of a pressure stability determination system according to an embodiment of the present invention;
FIG. 3 illustrates a flow control system block diagram according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the intelligent hydraulic system according to the embodiment of the present invention includes: the hydraulic system comprises an oil tank, a hydraulic pump, a hydraulic pipeline, a load, a pressure gauge and a control system. The hydraulic pump is used for drawing hydraulic oil in the oil tank and providing pressure for a load through a hydraulic pipeline, and the hydraulic pump comprises a motor for providing power for the hydraulic pump; the pressure gauge is used for measuring the pressure value in the hydraulic pipeline; the control system is connected with the hydraulic pump and the pressure gauge and is used for collecting data and controlling the hydraulic pump according to the data; wherein the data includes an operating state of the hydraulic pump and a pressure value of the pressure gauge.
In this embodiment, the intelligent hydraulic system further includes a command system connected to the control system, and the control system sends a control command to the hydraulic pump through the command system.
In this embodiment, the intelligent hydraulic system further includes an overflow valve connected to the oil tank, and when the pressure value measured by the pressure gauge exceeds the rated pressure of the system, the control system controls the overflow valve to open, so that part of the hydraulic oil in the hydraulic pipeline and the load flows into the oil tank, so that the pressure value is reduced below the rated pressure.
In this embodiment, the control system includes an acquisition system, which is connected to the hydraulic pump and the pressure gauge, and is configured to acquire a working state of the hydraulic pump and a pressure value of the pressure gauge. It should be noted that, in this embodiment, the intelligent hydraulic system re-collects data once at intervals (for example, 80 ms), and uses the data to perform a processing procedure.
The control system also comprises a pressure stability judging system and a flow control system. The method comprises the following steps:
the pressure stability judging system is connected with the collecting system and is used for judging whether the load is in a pressure stability state or not according to the change of the pressure value when the working state of the hydraulic pump is a pressurized state. In the pressure stability judging system block diagram shown in fig. 2, in judging whether the load is in a pressure stable state, specifically: when the pressure value reaches a first specified pressure (generally, the pressure is set to be slightly lower than the opening pressure of the relief valve, for example, the relief pressure of the relief valve is 24MPa, the first specified pressure can be set to be a value slightly lower than 24MPa, for example, 22MPa. Because the control system issues a command, the hydraulic pump receives the command and executes the command for a certain time delay, the pressure value when the hydraulic pump is actually turned off can be slightly higher than the first specified pressure, for example, 23MPa-24 MPa), the hydraulic pump is turned off, whether the current pressure value meets the working requirement is judged after the set time period, if yes, the pressure is judged to be stable, and otherwise, the pressure is judged to be unstable. If the pressure value exceeds a predetermined range in the set period of time, that is, if the pressure drop rate is too high, the pressure is determined to be unstable.
If the pressure stability judging system judges that the pressure is stable, the hydraulic pump is in a closed state, namely the whole hydraulic system is in a non-pressurized state, and the intelligent hydraulic system does not enter the pressure stability judging system when executing the next round of treatment process (for example, after 80 milliseconds).
The flow control system is connected with the pressure stability judging system and the command system, and when the judging result of the pressure stability judging system is that the pressure is unstable, the flow control system controls the displacement of the hydraulic pump according to the pressure value and sends a corresponding control command to the hydraulic pump through the command system. Wherein, as shown in the flow control system block diagram of fig. 3, in controlling the displacement of the hydraulic pump according to the pressure value, specifically: judging whether the current pressure value exceeds a second specified pressure (for example, the lowest working pressure of the hydraulic system is 16MPa, the second specified pressure is set to be a value below 16MPa, for example, 10 MPa), and if the pressure value exceeds the second specified pressure, the hydraulic pump with high rotating speed is required to be regulated to be at low rotating speed due to the fact that the pressure rising speed is high under the high pressure condition so as to be convenient to control; and if the second specified pressure is not exceeded, regulating the low-rotation-speed hydraulic pump to a high rotation speed, improving the displacement of the hydraulic pump, and accelerating to reach the working pressure.
Further, the control system further comprises an automatic pressure compensating judging system, wherein the automatic pressure compensating judging system is connected with the collecting system and the flow control system and is used for judging whether pressure compensating is needed according to the change of the pressure value when the working state of the hydraulic pump is in a non-pressurized state so as to judge whether the working state of the hydraulic pump needs to be adjusted. If pressure compensation is needed, the automatic pressure compensation judging system feeds back the result to the flow control system, and the flow control system controls the opening and the discharge capacity of the hydraulic pump according to the pressure value and sends a corresponding control command to the hydraulic pump through the command system; if the pressurization is not needed, the hydraulic pump is controlled to keep in a non-pressurized state, and a corresponding control command is sent to the hydraulic pump through a command system. Monitoring the change of the pressure value through an automatic pressure compensation judging system, specifically: when the pressure value is reduced below a third specified pressure (for example, the lowest working pressure of the hydraulic system is 16MPa, the third specified pressure should be set to a value of 16MPa or more) due to load change or system leakage and the like, the pressure is judged to need to be supplemented, the displacement of the hydraulic pump is controlled according to the pressure value through a flow control system, and a control command is sent to the hydraulic pump through a command system to enter a pressurization stage.
It should be noted that the control system may be implemented by software or a circuit.
In combination with the flow control system block diagram, an intelligent hydraulic method of an embodiment is further provided, including the following steps:
s1: measuring a pressure value in a hydraulic pipeline when the hydraulic pump draws hydraulic oil in an oil tank and provides pressure to a load through the hydraulic pipeline;
s2: collecting the pressure value and the working state of the hydraulic pump in real time;
s3: and controlling the hydraulic pump according to the pressure value and the working state of the hydraulic pump.
In step S3, the specific steps are as follows:
s31: judging whether the current working state of the hydraulic pump is a pressurized state or not;
if not, executing step S32;
if yes, go to step S33.
S32: controlling the working state of the hydraulic pump according to the change of the pressure value;
specific: the change in pressure value is monitored, and when the pressure value falls below a third specified pressure due to a load change or system leakage or the like, a control command to turn on the hydraulic pump is sent by the command system to enter the pressurization phase.
S33: judging whether the load is in a pressure stable state according to the change of the pressure value;
specifically, the method comprises the following steps: closing the hydraulic pump when the pressure value reaches a first specified pressure; and judging whether the current pressure value meets the working requirement after the set time length is elapsed, if so, judging that the pressure is stable, otherwise, judging that the pressure is unstable. And if the pressure value is in a set time, the pressure falling speed exceeds a specified range, namely the falling speed is too high, and the unstable pressure is judged.
If not, executing step S34;
s34: and controlling the displacement of the hydraulic pump according to the pressure value.
Specifically, the method comprises the following steps: judging whether the current pressure value exceeds a second designated pressure or not; if the second specified pressure is exceeded, adjusting the hydraulic pump at a high rotational speed to a low rotational speed; and if the second specified pressure is not exceeded, adjusting the hydraulic pump with low rotation speed to high rotation speed.
In this embodiment, the method further includes step S4: and if the pressure value exceeds the rated pressure of the system, opening an overflow valve connected with the oil tank, so that part of hydraulic oil in the hydraulic pipeline and the load flows into the oil tank.
Based on the embodiment of the intelligent hydraulic system and the embodiment of the intelligent hydraulic method, the intelligent control system can intelligently control the hydraulic system, provide accurate and stable pressure, and avoid long-term starting of the hydraulic pump, thereby prolonging the service life of components and overcoming the adverse effects caused by load change hydraulic pressure and system leakage. And has the advantages of simple implementation, reliable work and convenient popularization.
The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.
Claims (15)
1. An intelligent hydraulic system, characterized in that the intelligent hydraulic system comprises:
the hydraulic pump is used for drawing hydraulic oil in the oil tank and providing pressure for a load through a hydraulic pipeline;
the pressure gauge is used for measuring the pressure value in the hydraulic pipeline;
the control system is connected with the hydraulic pump and the pressure gauge and is used for collecting data and controlling the hydraulic pump according to the data; wherein the data includes an operating state of the hydraulic pump and a pressure value of the pressure gauge.
2. The intelligent hydraulic system of claim 1, wherein the control system comprises:
the acquisition system is connected with the hydraulic pump and the pressure gauge and is used for acquiring the working state of the hydraulic pump and the pressure value of the pressure gauge;
the pressure stability judging system is connected with the collecting system and is used for judging whether the load is in a pressure stability state according to the change of the pressure value when the working state of the hydraulic pump is a pressurized state;
and the flow control system is connected with the pressure stability judging system and is used for controlling the displacement of the hydraulic pump according to the pressure value when the judging result of the pressure stability judging system is that the pressure is unstable.
3. The intelligent hydraulic system of claim 2, wherein the pressure stability determination system, when determining whether the load is in a pressure stable state, comprises:
closing the hydraulic pump when the pressure value reaches a first specified pressure;
and judging whether the current pressure value meets the working requirement after the set time length is elapsed, if so, judging that the pressure is stable, otherwise, judging that the pressure is unstable.
4. The intelligent hydraulic system according to claim 3, wherein if the pressure value exceeds a specified range in the pressure drop rate for a set period of time, the pressure is determined to be unstable.
5. The intelligent hydraulic system of claim 2, wherein the flow control system, in controlling the displacement of the hydraulic pump in accordance with the pressure value, comprises:
judging whether the current pressure value exceeds a second designated pressure or not;
if the second specified pressure is exceeded, adjusting the hydraulic pump at a high rotational speed to a low rotational speed;
and if the second specified pressure is not exceeded, adjusting the hydraulic pump with low rotation speed to high rotation speed.
6. The intelligent hydraulic system of claim 1, wherein the control system further comprises an automatic pressure compensation judging system connected with the acquisition system for judging whether pressure compensation is needed according to the change of the pressure value when the working state of the hydraulic pump is a non-pressurized state.
7. The intelligent hydraulic system according to any one of claims 1 to 6, further comprising an overflow valve connected to the tank;
when the pressure value measured by the pressure gauge exceeds the rated pressure of the system, the control system controls the overflow valve to be opened, so that part of hydraulic oil in the hydraulic pipeline and the load flows into the oil tank.
8. The intelligent hydraulic system of any one of claims 1-6, further comprising: and the command system is connected with the control system, and the control system sends a control command to the hydraulic pump through the command system.
9. An intelligent hydraulic method, characterized in that it comprises the following steps:
measuring a pressure value in a hydraulic pipeline when the hydraulic pump draws hydraulic oil in an oil tank and provides pressure to a load through the hydraulic pipeline;
collecting the pressure value and the working state of the hydraulic pump in real time;
and controlling the hydraulic pump according to the pressure value and the working state of the hydraulic pump.
10. The intelligent hydraulic method according to claim 9, characterized in that in said controlling of said hydraulic pump according to said pressure value and said operation state of said hydraulic pump, it comprises the steps of:
if the working state of the hydraulic pump is a pressurized state, judging whether the load is in a pressure stable state according to the change of the pressure value;
and if the judgment result is that the pressure is unstable, controlling the displacement of the hydraulic pump according to the pressure value.
11. The intelligent hydraulic method according to claim 10, wherein said determining whether said load is in a pressure steady state comprises the steps of:
closing the hydraulic pump when the pressure value reaches a first specified pressure;
and judging whether the current pressure value meets the working requirement after the set time length is elapsed, if so, judging that the pressure is stable, otherwise, judging that the pressure is unstable.
12. The intelligent hydraulic method according to claim 11, wherein if the pressure value exceeds a specified range at a pressure drop rate within a set period of time, the pressure is determined to be unstable.
13. The intelligent hydraulic method according to claim 10, characterized in that in said controlling the displacement of said hydraulic pump according to said pressure value, it comprises the steps of:
judging whether the current pressure value exceeds a second designated pressure or not;
if the second specified pressure is exceeded, adjusting the hydraulic pump at a high rotational speed to a low rotational speed;
and if the second specified pressure is not exceeded, adjusting the hydraulic pump with low rotation speed to high rotation speed.
14. The intelligent hydraulic method of claim 9, further comprising the steps of:
and if the working state of the hydraulic pump is in a non-pressurized state, controlling the working state of the hydraulic pump according to the change of the pressure value.
15. The intelligent hydraulic method according to any one of claims 9 to 14, further comprising the steps of:
and if the pressure value exceeds the rated pressure of the system, opening an overflow valve connected with the oil tank, so that part of hydraulic oil in the hydraulic pipeline and the load flows into the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111638753.1A CN116412177A (en) | 2021-12-29 | 2021-12-29 | Intelligent hydraulic system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111638753.1A CN116412177A (en) | 2021-12-29 | 2021-12-29 | Intelligent hydraulic system and method |
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| CN116412177A true CN116412177A (en) | 2023-07-11 |
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| CN202111638753.1A Pending CN116412177A (en) | 2021-12-29 | 2021-12-29 | Intelligent hydraulic system and method |
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