CN106284480B - excavator hydraulic oil temperature automatic control method - Google Patents
excavator hydraulic oil temperature automatic control method Download PDFInfo
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- CN106284480B CN106284480B CN201610709443.7A CN201610709443A CN106284480B CN 106284480 B CN106284480 B CN 106284480B CN 201610709443 A CN201610709443 A CN 201610709443A CN 106284480 B CN106284480 B CN 106284480B
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- temperature
- oil temperature
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- oil
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of excavator hydraulic oil temperature automatic control methods, including；A) radiator is set in hydraulic system：B oil temperature alarm temperature and oil temperature early warning temperature) are arranged by controller；C) start hydraulic pump, acquire hydraulic fluid temperature and feed back to controller, obtain real-time hydraulic fluid temperature-time plot；D) such as detect that oil temperature is less than oil temperature early warning temperature, then controller is not processed；Such as detect that oil temperature is higher than oil temperature early warning temperature, then controller calculates tangent slope K of the oil temperature on hydraulic fluid temperature-time plot at this time in real time, if slope K is 0, the current value that controller is output to the power control solenoid valve of control hydraulic pump does not do and changes, if slope K is positive value, controller reduces the current value for the power control solenoid valve for being output to control hydraulic pump at this time, until measuring, tangent slope K is 0 or oil temperature is less than oil temperature early warning temperature；It is of the invention whole to realize that hydraulic fluid temperature control within the scope of setting, ensures the continuity and working efficiency of operation, and can suitably reduce radiator power deposit.
Description
Technical field
The present invention relates to a kind of temperature automatic control methods for excavator hydraulic oil.
Background technology
Excavator long-term work under hot weather, hydraulic fluid temperature will rise, and hydraulic oil temperature will be excessively high to be caused under viscosity
It drops, causes system oil leak, reduces the series of problems such as seal life；To avoid appeal from happening, at present usually in hydraulic pressure system
Radiator is set in system, and sets oil temperature warning device, once oil temperature reaches alarm temperature, warning device can prompt operator to stop
Machine, but this will influence the continuity and working efficiency of operation, such as increase radiator power, but can be made again under Normal Environmental Temperature
At the wasting of resources.
Invention content
The purpose of the present invention is being directed to deficiencies of the prior art, it is automatic to provide a kind of excavator hydraulic oil temperature
Control method, it whole can realize hydraulic fluid temperature control within the scope of setting and without shutting down, to ensure operation
Continuity and working efficiency, and radiator power deposit can be suitably reduced, it is cost-effective.
In order to achieve the above objectives, excavator hydraulic oil temperature automatic control method of the invention, includes the following steps；A) exist
Radiator is set in hydraulic system：Characterized by further comprising：B an oil temperature alarm temperature and an oil temperature) are arranged by controller
Early warning temperature, oil temperature early warning temperature are less than oil temperature alarm temperature；C) start hydraulic pump, make hydraulic work system, and by setting
It sets the acquisition hydraulic fluid temperature of the temperature sensor in hydraulic system and feeds back to controller, via controller handles to obtain real-time shape
Hydraulic fluid temperature-time plot of state；D) as temperature sensor detects that oil temperature is less than oil temperature early warning temperature, then controller
It is not processed；If temperature sensor detects that oil temperature is higher than oil temperature early warning temperature, then controller calculates oil temperature at this time and exists in real time
Tangent slope K on hydraulic fluid temperature-time plot shows that oil temperature no longer rises, controller is output to if slope K is 0
The current value of the power control solenoid valve of control hydraulic pump, which is not done, to be changed, and if slope K is positive value, shows that oil temperature will rise, at this time
Controller reduces the current value for being output to power control solenoid valve, until measuring real-time oil temperature in hydraulic fluid temperature-time graph
Tangent slope K on figure is 0 or detects that oil temperature is less than oil temperature early warning temperature；
The present invention such as will also be risen, be automatically controlled when oil temperature reaches early warning temperature by the method for this dynamic regulation
It is output to the current value of the power control solenoid valve of hydraulic pump so that hydraulic pump swash plate angle reduces output flow and reduces work(
Rate, oil temperature can reduce under same radiating condition, avoid exceeding alarm temperature, to reach automatically controlling for hydraulic oil temperature, energy
Whole process realizes hydraulic fluid temperature control within the scope of setting and without shutting down, to ensure the continuity and work effect of operation
Rate, and radiator power deposit can be suitably reduced, it is cost-effective；
As a further improvement on the present invention, in step D) in, descending gradually reduce of controller is output to power control
The current value of solenoid valve processed；By the difference for being appropriately arranged with oil temperature early warning temperature and oil temperature alarm temperature so that controller is by big
There are enough lag times to the small output current value that gradually reduces, the range of decrease of power can be minimized；
As a further improvement on the present invention, in step C) in temperature sensor the hydraulic oil container in hydraulic system is set
Oil back region；This area be hydraulic system in oil temperature higher position and convenient for detection, be conducive to by Oil-temperature control under setting value；
In conclusion of the invention whole can realize hydraulic fluid temperature control within the scope of setting and not have to shut down, from
And ensure the continuity and working efficiency of operation, and radiator power deposit can be suitably reduced, it is cost-effective.
Description of the drawings
Fig. 1 is the hydraulic system schematic diagram using the embodiment of the present invention.
Fig. 2 is institute of embodiment of the present invention pressure measurement oil temperature-time plot.
Specific implementation mode
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in Figure 1, using the hydraulic system of the embodiment of the present invention, including the temperature in hydraulic oil container oil back region is set
Sensor 1, the power control solenoid valve 3 for controlling hydraulic pump 2, temperature sensor 1 are connected with the input terminal of vehicle control device 4, work(
Rate control solenoid valve 3 is connected with the output end of vehicle control device 4；
The excavator hydraulic oil temperature automatic control method of the embodiment of the present invention, includes the following steps；A) in hydraulic system
Middle setting radiator（It is not shown）；B) be 85 DEG C by the setting oil temperature alarm temperature of vehicle control device 4 is with oil temperature early warning temperature
82℃；C) start hydraulic pump 2, so that hydraulic work system, and the temperature sensor 1 by being arranged in hydraulic oil container oil back region is adopted
Collection hydraulic pressure oil temperature simultaneously feeds back to vehicle control device 4, through vehicle control device 4 handle obtain real-time status hydraulic fluid temperature-when
Half interval contour figure；D) as temperature sensor detects that oil temperature is consistently lower than 82 DEG C of oil temperature early warning temperature, such as the curve 5 in Fig. 2, then vehicle
Controller 4 is not processed, and hydraulic pump 2 maintains standing state；As temperature sensor 1 detects that oil temperature is higher than oil temperature early warning temperature
82 DEG C, then vehicle control device 4 calculate tangent slope K of the oil temperature on hydraulic fluid temperature-time plot at this time in real time, such as
Slope K is 0, such as the curve in Fig. 2,6, and show that oil temperature no longer rises, vehicle control device 4 is output to power control solenoid valve 3
Current value, which is not done, to be changed, if slope K is positive value, such as the curve in Fig. 2,7, show that oil temperature will rise, at this time vehicle control device 4 by
Arrive the small current value for gradually reducing and being output to power control solenoid valve 3 greatly, until measure real-time oil temperature hydraulic fluid temperature-when
Tangent slope K on half interval contour figure is 0 or detects that oil temperature is less than 82 DEG C of oil temperature early warning temperature；
The present invention draws hydraulic fluid temperature-time plot in real time by the method for dynamic regulation, by curve certain
The tangent slope K of point can determine whether temperature changing trend；When oil temperature reaches 82 DEG C of early warning temperature, such as pass through tangent slope K at this time
Judge temperature will rise, then vehicle control device 4 automatically control be output to power control solenoid valve 3 current value it is descending gradually
Reduce so that hydraulic pump swash plate angle is gradually reduced to reduce output flow and reduce power, the oil temperature under same radiating condition
It can reduce, avoid exceeding alarm temperature, to reach automatically controlling for hydraulic oil temperature；It is of the invention whole to realize hydraulic fluid temperature
Control to ensure the continuity and working efficiency of operation, and can be reduced suitably scattered within the scope of setting and without shutting down
The hot device margin of power, it is cost-effective；
The present invention is not limited to the above embodiments, such as difference of oil temperature early warning temperature and oil temperature alarm temperature can according to operating mode
Adjustment, the installation position of temperature sensor can also change, they are all belonged to the scope of protection of the present invention.
Claims (3)
1. a kind of excavator hydraulic oil temperature automatic control method, includes the following steps；A) radiator is set in hydraulic system：
Characterized by further comprising：B an oil temperature alarm temperature and an oil temperature early warning temperature, oil temperature early warning temperature) are arranged by controller
Less than oil temperature alarm temperature；C) start hydraulic pump, make hydraulic work system, and the temperature by being arranged in hydraulic system passes
Sensor acquires hydraulic fluid temperature and feeds back to controller, and hydraulic fluid temperature-time that via controller handles to obtain real-time status is bent
Line chart；D) as temperature sensor detect oil temperature be less than oil temperature early warning temperature, then controller be not processed；As temperature sensor is examined
Measure oil temperature be higher than oil temperature early warning temperature, then controller calculate in real time at this time oil temperature on hydraulic fluid temperature-time plot
Tangent slope K, if slope K be 0, show that oil temperature no longer rises, controller be output to control hydraulic pump power control electromagnetism
The current value of valve, which is not done, to be changed, and if slope K is positive value, shows that oil temperature will rise, controller reduction at this time is output to control hydraulic pressure
The current value of the power control solenoid valve of pump, until it is oblique to measure tangent line of the real-time oil temperature on hydraulic fluid temperature-time plot
Rate K is 0 or detects that oil temperature is less than oil temperature early warning temperature.
2. excavator hydraulic oil temperature automatic control method as described in claim 1, it is characterised in that in step D) in, control
Device is descending to gradually reduce the current value for being output to power control solenoid valve.
3. excavator hydraulic oil temperature automatic control method as claimed in claim 1 or 2, it is characterised in that in step C) medium temperature
The hydraulic oil container oil back region that degree sensor is arranged in hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610709443.7A CN106284480B (en) | 2016-08-24 | 2016-08-24 | excavator hydraulic oil temperature automatic control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610709443.7A CN106284480B (en) | 2016-08-24 | 2016-08-24 | excavator hydraulic oil temperature automatic control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106284480A CN106284480A (en) | 2017-01-04 |
| CN106284480B true CN106284480B (en) | 2018-10-09 |
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ID=57615553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610709443.7A Active CN106284480B (en) | 2016-08-24 | 2016-08-24 | excavator hydraulic oil temperature automatic control method |
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| Country | Link |
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| CN (1) | CN106284480B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997137A (en) * | 2020-08-25 | 2020-11-27 | 上海华兴数字科技有限公司 | Excavator control method and device, storage medium and excavator |
| CN112254972B (en) * | 2020-10-26 | 2023-02-24 | 上海三一重机股份有限公司 | Excavator oil temperature early warning method and device, server and excavator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974926A (en) * | 2010-09-29 | 2011-02-16 | 三一重机有限公司 | Oil returning system capable of automatically controlling hydraulic oil temperature used for excavator |
| CN103806497A (en) * | 2014-02-14 | 2014-05-21 | 上海三一重机有限公司 | Oil return system allowing oil temperature to be regulated automatically and excavator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101032731B1 (en) * | 2009-06-02 | 2011-05-06 | 볼보 컨스트럭션 이큅먼트 에이비 | Excavator with hammer device |
| JP5816601B2 (en) * | 2012-11-06 | 2015-11-18 | 日立建機株式会社 | Work machine cooling system |
-
2016
- 2016-08-24 CN CN201610709443.7A patent/CN106284480B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974926A (en) * | 2010-09-29 | 2011-02-16 | 三一重机有限公司 | Oil returning system capable of automatically controlling hydraulic oil temperature used for excavator |
| CN103806497A (en) * | 2014-02-14 | 2014-05-21 | 上海三一重机有限公司 | Oil return system allowing oil temperature to be regulated automatically and excavator |
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| CN106284480A (en) | 2017-01-04 |
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