CN102733441B - Raising speed control energy saving system and method for excavator - Google Patents
Raising speed control energy saving system and method for excavator Download PDFInfo
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- CN102733441B CN102733441B CN201210201154.8A CN201210201154A CN102733441B CN 102733441 B CN102733441 B CN 102733441B CN 201210201154 A CN201210201154 A CN 201210201154A CN 102733441 B CN102733441 B CN 102733441B
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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
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
- E02F9/2066—Control of propulsion units of the type combustion engines
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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
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a raising speed control energy saving system and a raising speed control energy saving method for an excavator. The raising speed control energy saving system comprises a pilot pressure sensor, a controller and an accelerator control mechanism. The pilot pressure sensor is used for detecting pilot pressure signals of all actions of the excavator; the controller is connected with an accelerator knob and the pilot pressure sensor of the excavator; the accelerator control mechanism is connected with the controller; and the controller controls the openness of an accelerator based on working gears transferred by the accelerator knob and load conditions detected by the pilot pressure sensor according to different stages by the accelerator control mechanism. By the system and the method, the power loss of an engine is avoided, and the engine and a main pump run in the most economic state. Moreover, the efficiency of large excavators is improved, and oil consumption is reduced under the condition that auxiliary equipment is not added.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of excavator rising film condensation energy conserving system and method.
Background technology
Large hydraulic excavator is important engineering machinery, has the advantages such as digging force is large, production efficiency is high, environmental adaptation is strong, wide accommodation.
But, the energy loss of many links is there is because load variations is frequent in large hydraulic excavator operation operating mode complexity, operation process, excursion large.Such as, in the prior art, after excavator is put into gear, engine speed will directly rise to the rotating speed of target of this gear, when after connection load, just on the basis of this rotating speed of target, freely falls speed.The problem that such operation produces is, if excavator workload useless for some time after putting into gear, the high-speed rotation because of motor was expended multiple fuel, and then causes Hydraulic System Fever, the problems such as service behaviour deterioration.
Energy Saving Control has become one of prior development direction of large hydraulic excavator; Further, this demand also becomes an urgent demand improving the market competitiveness.
Summary of the invention
In view of this, the present invention proposes a kind of excavator rising film condensation energy conserving system and method, to realize the Energy Saving Control of excavator in boosting velocity procedure.
First aspect, excavator rising film condensation energy conserving system of the present invention comprises pilot pressure sensor, controller and manipulating mechanism of oil throttle.Pilot pressure sensor is for detecting the pilot pressure signal of each action of excavator; Controller is connected with described pilot pressure sensor with the grip of excavator; Manipulating mechanism of oil throttle is connected with described controller; Wherein, described controller is used for the condition of loading of operation range and the described pilot pressure sensor detection of transmitting according to grip, is controlled the opening degree of throttle by different stage by manipulating mechanism of oil throttle.
Further, in above-mentioned excavator rising film condensation energy conserving system, described controller comprises further: gear detection port, pilot pressure detection port and processor.The excavator operation range that gear detection port obtains for receiving described grip; The pilot pressure signal that pilot pressure detection port detects for receiving described pilot pressure sensor; Processor is used for sending no-load speed control signal when obtaining excavator operation range, and sends rotating speed of target control signal when pilot pressure signal being detected further; Wherein, described no-load speed control signal, rotating speed of target control signal are between no-load speed and rotating speed of target for driving the rotating speed of described manipulating mechanism of oil throttle control motor.
Further, above-mentioned excavator rising film condensation energy conserving system also comprises: accelerator open degree sensor, its signal input part is connected with described manipulating mechanism of oil throttle, and signal output part is connected with the input of described controller, for throttle opening degree is fed back to described controller.
Further, above-mentioned excavator rising film condensation energy conserving system also comprises: proportion magnetic valve and speed probe; Wherein, described speed probe is connected between described motor and controller, for measuring the rotating speed of motor and rotary speed information being passed to described controller; The input of described proportion magnetic valve is connected with described controller, and output is connected with motor by the Main Hydraulic Pump of motor; For the rotary speed information determined current signal output pressure signal transmitted according to speed probe at described controller, this pressure signal is no more than the realtime power of motor for the realtime power controlling Main Hydraulic Pump.
Further, in above-mentioned excavator rising film condensation energy conserving system, described no-load speed and described rotating speed of target are determined according to the test result in the power curve of described motor, the power curve of Main Hydraulic Pump and real work.
The present invention, by being connected with pilot pressure sensor with the grip of excavator by controller, can record gear signal that grip provides or the pressure signal that pilot pressure sensor is transmitted; And, the operation range that controller transmits according to grip and the condition of loading that pilot pressure sensor detects, controlled the opening degree of throttle by manipulating mechanism of oil throttle by different stage, and then make motor when having pilot pressure and there is no pilot pressure, operate according to different rotating speeds.In this way, energy conserving system of the present invention achieves the Energy Saving Control of excavator in boosting velocity procedure, avoids engine power loss, makes motor and main pump operate in most economical state.Further, need not auxiliary equipment be increased, large excavator improved efficiency and oil consumption reduction can be realized.
Second aspect, the invention also discloses a kind of excavator rising film condensation power-economizing method, the operation range that the method is transmitted according to grip and the condition of loading that pilot pressure sensor detects, send the speed controling signal of different stage, described speed controling signal, for the opening degree driving manipulating mechanism of oil throttle to control throttle, operates under the rotating speed of different stage to make motor.
Further, in above-mentioned excavator rising film condensation power-economizing method, described method is further: after collecting the operation range of excavator, sends no-load speed control signal, rises to no-load speed with the rotating speed controlling motor; Under the state that motor is in no-load speed, if pilot pressure signal detected further, then send rotating speed of target control signal, the rotating speed controlling motor rises to rotating speed of target, and make motor under the effect of load, motor falls speed from described rotating speed of target.
Further, in above-mentioned excavator rising film condensation power-economizing method, when not collecting the operation range of digging machine, motor is in auto idle speed state of a control.
Further, in above-mentioned excavator rising film condensation power-economizing method, under the state that motor is in no-load speed, if pilot pressure signal do not detected, then motor is made to keep no-load speed.
Further, in above-mentioned excavator rising film condensation power-economizing method, described no-load speed and described rotating speed of target are determined according to the test result in the power curve of digger engine power curve, Main Hydraulic Pump and real work.
The operation range that the present invention transmits according to grip and the condition of loading that pilot pressure sensor detects, send the speed controling signal of different stage, described speed controling signal, for the opening degree driving manipulating mechanism of oil throttle to control throttle, operates under the rotating speed of different stage to make motor.Therefore, power-economizing method of the present invention achieves the Energy Saving Control of excavator in boosting velocity procedure, avoids engine power loss, makes motor and main pump operate in most economical state.Further, need not auxiliary equipment be increased, large excavator improved efficiency and oil consumption reduction can be realized.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart of excavator rising film condensation energy conserving system first embodiment of the present invention;
Fig. 2 is that the signal of excavator rising film condensation energy conserving system first embodiment of the present invention controls schematic diagram;
Fig. 3 is the structured flowchart of excavator rising film condensation energy conserving system second embodiment of the present invention;
Fig. 4 is that the signal of excavator rising film condensation energy conserving system second embodiment of the present invention controls schematic diagram;
Fig. 5 is the flow chart of steps of excavator rising film condensation power-economizing method preferred embodiment of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
excavator rising film condensation energy conserving system first embodiment
See figures.1.and.2.
The present embodiment excavator rising film condensation energy conserving system comprises: pilot pressure sensor 500, controller 100 and manipulating mechanism of oil throttle 200.
Wherein, pilot pressure sensor 500 is for detecting the pilot pressure signal of each action of excavator; Controller 100 is connected with pilot pressure sensor 500 with the grip 600 of excavator; For only when obtaining excavator operation range by grip 600, send no-load speed control signal; Further, after acquisition operation range, if pilot pressure signal detected further, then rotating speed of target control signal is sent; Manipulating mechanism of oil throttle 200 is connected with controller 100, for controlling the opening degree of throttle according to no-load speed control signal or rotating speed of target control signal, is between no-load speed and rotating speed of target with the rotating speed controlling motor 300.
Wherein, no-load speed and the power curve of rotating speed of target according to described motor 300, the power curve of motor 300 Main Hydraulic Pump 800, and the test result in real work is determined.Further, according to the method for power curve and test result determination no-load speed and rotating speed of target, for known during those skilled in the art, too much explanation is no longer done at this.
Preferably a kind of mode is, energy conserving system can also arrange an accelerator open degree sensor 400, its signal input part is connected with manipulating mechanism of oil throttle 200, and its signal output part is connected with the input of controller 100, for throttle opening degree is fed back to controller 100.Further, controller 100 can also connect a display screen, to facilitate the observation of gear signal, pilot pressure signal, tach signal.
The present embodiment, by being connected with pilot pressure sensor with the grip of excavator by controller, can record gear signal that grip provides or the pressure signal that pilot pressure sensor is transmitted; Further, when excavator operation range only being detected, no-load speed control signal is sent; After acquisition operation range, if pilot pressure signal detected further, then send rotating speed of target control signal.Then, pressure oil gate operator, according to different control signals, controls the rotating speed of motor.
The benefit of this design is: although put into gear at excavator, but in the not loaded situation of reality, excavator operates with lower no-load speed, and once after pilot pressure being detected, then control motor and rise to rotating speed of target from no-load speed, then, motor is starting point with rotating speed of target again, freely falls speed.Also just say, the raising speed of digger engine is divided into two steps to walk: the first step, first by its raising speed to one less rotating speed; Second step, if there is load, then rises to a higher rotating speed from less rotating speed.Obviously, put into gear relative to excavator one of the prior art, with regard to rotating speed being risen to the scheme of rotating speed of target, when the present embodiment can avoid excavator attonity, motor operates in fast state and consumed multiple fuel, that is, the fuel oil too much consumed between the first step and second step.
In sum, the present embodiment achieves the Energy Saving Control of excavator in boosting velocity procedure, avoids engine power loss, makes motor and main pump operate in most economical state.Further, need not auxiliary equipment be increased, large excavator improved efficiency and oil consumption reduction can be realized.
In addition, it should be noted that, in the present embodiment, the rotating speed of excavator fixes on two states, i.e. no-load speed and rotating speed of target, in fact, if necessary, can further refinement excavate speed level.The application does not limit at this.
excavator rising film condensation energy conserving system second embodiment
With reference to Fig. 3 and Fig. 4.
The present embodiment excavator rising film condensation energy conserving system comprises: pilot pressure sensor 500, controller 100, manipulating mechanism of oil throttle 200, accelerator open degree sensor 400, proportion magnetic valve 700 and speed probe 900.
Wherein, pilot pressure sensor 500 is for detecting the pilot pressure signal of each action of excavator; Controller 100 is connected with pilot pressure sensor 500 with the grip 600 of excavator; For only when obtaining excavator operation range by grip 600, send no-load speed control signal; Further, after acquisition operation range, if pilot pressure signal detected further, then rotating speed of target control signal is sent; Manipulating mechanism of oil throttle 200 is connected with controller 100, for controlling the opening degree of throttle according to no-load speed control signal or rotating speed of target control signal, is between no-load speed and rotating speed of target with the rotating speed controlling motor 300.
Specifically, controller 100 comprises gear detection port, pilot pressure detection port and processor further.Wherein, gear detection port is for receiving the excavator operation range of grip 600 acquisition; The pilot pressure signal that pilot pressure detection port detects for receiving pilot pressure sensor 500; Processor is used for sending no-load speed control signal when obtaining excavator operation range, and sends rotating speed of target control signal when pilot pressure signal being detected further; Wherein, no-load speed control signal, rotating speed of target control signal are between no-load speed and rotating speed of target for the rotating speed driving manipulating mechanism of oil throttle 200 and control motor 300.
During concrete enforcement, controller 100 can select general construction machinery controller, can adopt special program; Pilot pressure sensor 500 is installed in each hydraulic pilot loop in advance, and controller 100 detects the gear signal of grip 600 and pilot pressure signal carries out rotating speed control; Controller exports Direct driver accelerator mechanism, and engine speed is switched between no-load speed and rotating speed of target.
With the first embodiment, no-load speed and the power curve of rotating speed of target according to motor 300, the power curve of Main Hydraulic Pump 800, and the test result in real work is determined.Further, according to the method for power curve and test result determination no-load speed and rotating speed of target, for known during those skilled in the art, too much explanation is no longer done at this.
The signal input part of accelerator open degree sensor 400 is connected with manipulating mechanism of oil throttle 200, and the signal output part of accelerator open degree sensor 400 is connected with the input of controller 100, for throttle opening degree is fed back to controller 100.Further, controller 100 can also connect a display screen, to facilitate the observation of gear signal, pilot pressure signal, tach signal.
Speed probe 900 is connected between motor 300 and controller 100, for measuring the rotating speed of motor 300 and rotary speed information being passed to controller 100.The input of proportion magnetic valve 700 is connected with controller 100, and output is connected with motor 300 by Main Hydraulic Pump 800; For the rotary speed information determined current signal output pressure signal transmitted according to speed probe 900 at controller 100, this pressure signal is no more than the realtime power of motor 300 for the realtime power controlling Main Hydraulic Pump 800.
The present embodiment, by being connected with pilot pressure sensor with the grip of excavator by controller, can record gear signal that grip provides or the pressure signal that pilot pressure sensor is transmitted; Further, when excavator operation range only being detected, no-load speed control signal is sent; After acquisition operation range, if pilot pressure signal detected further, then send rotating speed of target control signal.Then, pressure oil gate operator, according to different control signals, controls the rotating speed of motor.
As above illustrated by an embodiment, the benefit of this design is: although put into gear at excavator, but in the not loaded situation of reality, excavator operates with lower no-load speed, and once after pilot pressure being detected, then control motor and rise to rotating speed of target from no-load speed, then, motor is starting point with rotating speed of target again, freely falls speed.Also just say, the raising speed of digger engine is divided into two steps to walk: the first step, first by its raising speed to one less rotating speed; Second step, if there is load, then rises to a higher rotating speed from less rotating speed.Obviously, put into gear relative to excavator one of the prior art, with regard to rotating speed being risen to the scheme of rotating speed of target, when the present embodiment can avoid excavator attonity, motor operates in fast state and consumed multiple fuel, that is, the fuel oil too much consumed between the first step and second step.
Therefore, the present embodiment excavator rising film condensation energy conserving system achieves the Energy Saving Control of excavator in boosting velocity procedure, and then many in the oil consumption to a certain degree overcoming motor, the problems such as Hydraulic System Fever and service behaviour deterioration.
Further, relative to the first embodiment, embodiment adds proportion magnetic valve 700 and speed probe 900.Its effect is:
The first, of paramount importance, by the coupling of engine power and Main Hydraulic Pump power, optimize engine speed-proportion magnetic valve currents match relation further, in this way, operating efficiency can be promoted further, reduce work oil consumption;
The second, except technique effect mentioned above, the present embodiment also has the function preventing engine misses, this is because: after the rotating speed of digger engine rises to rotating speed of target from no-load speed, excavator is because adding the cause of workload, although accelerator open degree is constant, but motor with rotating speed of target for falling fast starting point, can start speed.But in fact, what motor can not be unlimited falls speed because, when the speed of motor reduce too low time, the power of motor can slowly reduce, and when power output lower than Main Hydraulic Pump of the power of motor, can cause engine misses.Therefore, in order to avoid the appearance of this problem, by the rotating speed of speed probe 900 monitor engines in real time in the present embodiment, and by the speed feedback of motor to controller 100, the rotary speed information determined current signal output pressure signal that controller 100 transmits according to speed probe 900, this pressure signal is no more than the realtime power of motor 300 for the realtime power controlling Main Hydraulic Pump 800.Therefore, the motor of excavator is effectively protected in this way.
In addition, use the excavator of BBG, because motor is high-pressure common rail mode fuel feeding, engine controller, according to load characteristic and change in torque, directly regulates the emitted dose of atomizer, and the mode regulating motor to export can substitute technique scheme.
In addition, it should be noted that, in the present embodiment, the rotating speed of excavator fixes on two states, i.e. no-load speed and rotating speed of target, in fact, if necessary, can further refinement excavate speed level.The application does not limit at this.
excavator rising film condensation power-economizing method preferred embodiment
The present embodiment excavator rising film condensation power-economizing method is after collecting the operation range of excavator, send no-load speed control signal, rise to no-load speed with the rotating speed controlling motor; Under the state that motor is in no-load speed, if pilot pressure signal detected further, then send rotating speed of target control signal, the rotating speed controlling motor rises to rotating speed of target, and make motor under the effect of load, motor falls speed from described rotating speed of target.
With reference to Fig. 5, specifically, comprise the steps:
Does step S501, judge that excavator collects the information of putting into gear?
If not, then perform step S502A, make excavator enter auto idle speed and control;
If so, then perform:
S502B, is pulled to the no-load speed position of respective notch by throttle;
Does S503B, judge whether pilot pressure signal to be detected?
If not, then current gear throttle position is kept;
If so, then, perform:
S504B, by accelerator mechanism adjustment motor to predetermined rotating speed of target;
S505B, under rotating speed of target, the PID carrying out engine speed and main pump power regulates.
It should be noted that, no-load speed and rotating speed of target can according to the power curve of the power curve of described motor, Main Hydraulic Pump, and the test result in real work is determined.Further, according to the method for power curve and test result determination no-load speed and rotating speed of target, for known during those skilled in the art, too much explanation is no longer done at this.
Although the present embodiment is put into gear at excavator, in the not loaded situation of reality, excavator operates with lower no-load speed, and once after pilot pressure being detected, then control motor and rise to rotating speed of target from no-load speed, then, motor is starting point with rotating speed of target again, freely falls speed.Also just say, the raising speed of digger engine is divided into two steps to walk: the first step, first by its raising speed to one less rotating speed; Second step, if there is load, then rises to a higher rotating speed from less rotating speed.Obviously, put into gear relative to excavator one of the prior art, with regard to rotating speed being risen to the scheme of rotating speed of target, obviously, when the present invention can avoid excavator attonity, motor operates in fast state and consumed multiple fuel, that is, the fuel oil too much consumed between the first step and second step.
In sum, power-economizing method of the present invention achieves the Energy Saving Control of excavator in boosting velocity procedure, avoids engine power loss, makes motor and main pump operate in most economical state.Further, need not auxiliary equipment be increased, large excavator improved efficiency and oil consumption reduction can be realized.
In addition, it should be noted that, in the present embodiment, the rotating speed of excavator fixes on two states, i.e. no-load speed and rotating speed of target, in fact, if necessary, can further refinement excavate speed level.The application does not limit at this.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an excavator rising film condensation energy conserving system, is characterized in that, comprising:
Pilot pressure sensor (500), for detecting the pilot pressure signal of each action of excavator;
Controller (100), is connected with described pilot pressure sensor (500) with the grip (600) of excavator;
Manipulating mechanism of oil throttle (200), is connected with described controller (100);
Wherein, the condition of loading that described controller (100) detects for the operation range that transmits according to grip (600) and described pilot pressure sensor (500), controls the opening degree of throttle by manipulating mechanism of oil throttle (200) by different stage;
Described controller (100) comprises further:
Gear detection port, for receiving the excavator operation range that described grip (600) obtains;
Pilot pressure detection port, for receiving the pilot pressure signal that described pilot pressure sensor (500) detects;
Processor, for sending no-load speed control signal when obtaining excavator operation range, and sends rotating speed of target control signal when pilot pressure signal being detected further;
Wherein, described no-load speed control signal, rotating speed of target control signal are between no-load speed and rotating speed of target for driving the rotating speed of described manipulating mechanism of oil throttle (200) control motor (300).
2. excavator rising film condensation energy conserving system according to claim 1, is characterized in that, also comprise:
Accelerator open degree sensor (400), its signal input part is connected with described manipulating mechanism of oil throttle (200), signal output part is connected with the input of described controller (100), for throttle opening degree is fed back to described controller (100).
3. excavator rising film condensation energy conserving system according to claim 2, is characterized in that, also comprise:
Proportion magnetic valve (700) and speed probe (900); Wherein
Described speed probe (900) is connected between described motor (300) and controller (100), for measuring the rotating speed of motor (300) and rotary speed information being passed to described controller (100);
The input of described proportion magnetic valve (700) is connected with described controller (100), and output is connected with motor (300) by the Main Hydraulic Pump (800) of motor (300); For the rotary speed information determined current signal output pressure signal transmitted according to speed probe (900) at described controller (100), this pressure signal is no more than the realtime power of motor (300) for the realtime power controlling Main Hydraulic Pump (800).
4. excavator rising film condensation energy conserving system according to any one of claim 1 to 3, is characterized in that,
Described no-load speed and described rotating speed of target are determined according to the test result in the power curve of described motor (300), the power curve of Main Hydraulic Pump (800) and real work.
5. an excavator rising film condensation power-economizing method, is characterized in that,
The condition of loading that the operation range transmitted according to grip and pilot pressure sensor detect, send the speed controling signal of different stage, described speed controling signal, for the opening degree driving manipulating mechanism of oil throttle to control throttle, operates under the rotating speed of different stage to make motor;
Wherein, after collecting the operation range of excavator, send no-load speed control signal, rise to no-load speed with the rotating speed controlling motor;
Under the state that motor is in no-load speed, if pilot pressure signal detected further, then send rotating speed of target control signal, the rotating speed controlling motor rises to rotating speed of target, and make motor under the effect of load, motor falls speed from described rotating speed of target.
6. excavator rising film condensation power-economizing method according to claim 5, is characterized in that,
When not collecting the operation range of excavator, motor is in auto idle speed state of a control.
7. excavator rising film condensation power-economizing method according to claim 6, is characterized in that,
Under the state that motor is in no-load speed, if pilot pressure signal do not detected, then motor is made to keep no-load speed.
8. excavator rising film condensation power-economizing method according to claim 7, is characterized in that,
Described no-load speed and described rotating speed of target are determined according to the test result in the power curve of digger engine power curve, Main Hydraulic Pump and real work.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201154.8A CN102733441B (en) | 2012-06-15 | 2012-06-15 | Raising speed control energy saving system and method for excavator |
| PCT/CN2012/085824 WO2013185444A1 (en) | 2012-06-15 | 2012-12-04 | Energy-saving speed increasing control system and method for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201154.8A CN102733441B (en) | 2012-06-15 | 2012-06-15 | Raising speed control energy saving system and method for excavator |
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| CN102733441A CN102733441A (en) | 2012-10-17 |
| CN102733441B true CN102733441B (en) | 2015-04-22 |
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| CN102733441B (en) * | 2012-06-15 | 2015-04-22 | 三一重机有限公司 | Raising speed control energy saving system and method for excavator |
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| CN102900122B (en) * | 2012-11-09 | 2015-05-20 | 中外合资沃得重工（中国）有限公司 | Rotary hydraulic system of excavator and control method |
| CN102996265B (en) * | 2012-11-27 | 2016-02-03 | 中联重科股份有限公司渭南分公司 | Engineering mechanical equipment and engine rotating speed control method, device and system thereof |
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| JP2002285890A (en) * | 2001-03-28 | 2002-10-03 | Kobelco Contstruction Machinery Ltd | Energy-saving operation device for construction machine |
| CN2848949Y (en) * | 2005-09-29 | 2006-12-20 | 徐州恒天德尔重工科技有限公司 | Energy saving environmental protection controlling system of excavating machine |
| WO2007072701A1 (en) * | 2005-12-21 | 2007-06-28 | Komatsu Ltd. | Wheel loader |
| CN201125402Y (en) * | 2007-10-11 | 2008-10-01 | 天津工程机械研究院 | Automatic control operation mode loading apparatus |
| CN201495572U (en) * | 2009-06-25 | 2010-06-02 | 徐州徐挖约翰迪尔机械制造有限公司 | Electronic monitoring device for wheeled excavators |
| CN102021926B (en) * | 2010-11-23 | 2012-08-22 | 三一重机有限公司 | Intelligent control method for improving efficiency of excavator |
| CN202131631U (en) * | 2011-05-17 | 2012-02-01 | 常林股份有限公司 | Energy saving controlling device of hydraulic excavator engine |
| CN202157368U (en) * | 2011-07-03 | 2012-03-07 | 山推工程机械股份有限公司 | Automatic regulating system for working condition operation mode of bulldozer |
| CN102493521B (en) * | 2011-12-01 | 2013-09-25 | 徐州徐工挖掘机械有限公司 | Energy-saving control method for cooling system of excavator |
| CN102733441B (en) * | 2012-06-15 | 2015-04-22 | 三一重机有限公司 | Raising speed control energy saving system and method for excavator |
-
2012
- 2012-06-15 CN CN201210201154.8A patent/CN102733441B/en active Active
- 2012-12-04 WO PCT/CN2012/085824 patent/WO2013185444A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013185444A1 (en) | 2013-12-19 |
| CN102733441A (en) | 2012-10-17 |
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