CN107882090A - Land leveller control device, method and land leveller - Google Patents
Land leveller control device, method and land leveller Download PDFInfo
- Publication number
- CN107882090A CN107882090A CN201710605328.XA CN201710605328A CN107882090A CN 107882090 A CN107882090 A CN 107882090A CN 201710605328 A CN201710605328 A CN 201710605328A CN 107882090 A CN107882090 A CN 107882090A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000012546 transfer Methods 0.000 claims description 11
- 210000002268 wool Anatomy 0.000 claims description 6
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 230000008450 motivation Effects 0.000 claims description 4
- 210000004209 hair Anatomy 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000005662 electromechanics Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
- E02F3/841—Devices for controlling and guiding the whole machine, e.g. by feeler elements and reference lines placed exteriorly of the machine
-
- 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
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2037—Coordinating the movements of the implement and of the frame
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses a kind of land leveller control device, method and land leveller, device therein includes：Multi-state selecting switch (1), gearbox-gear control module (2), controller module (3) and electronic engine control module (4)；Controller module (3) receives the gear information that the control model information of multi-state selecting switch (1) transmission and gearbox-gear control module (2) are sent and encoded, electronic engine control module (4) determines power curve corresponding with coding information, and based on the power output of power curve control engine.Control device, method and the land leveller of the present invention, different control models can be chosen according to specific duty requirements, corresponding power curve is exported in different modes, it efficiently avoid the less limitation of complete machine use range under Variable power state, avoid land leveller under different operating modes the problem of loss in efficiency, while realizing that machine energy-saving and dynamic property are lifted, a tractor serves several purposes is really realized.
Description
Technical field
The present invention relates to technical field of engineering machinery, more particularly to a kind of land leveller control device, method and land leveller.
Background technology
Land leveller is the earthmoving machinery based on path formation, is mainly used in the ground of the large area such as highway, airport, farmland
Smooth and ditching, operation, the land leveller operating rate difference required under different operating modes such as slope is scraped, is bulldozed, is loosened the soil, remove the snow.Entering
Row essence needs low-speed big to improve smooth quality when smooth, need the small moment of torsion of high speed to improve operation effect when carrying out thick smooth
Rate.Because land leveller use range is wide, engine is generally selected with peak power in design, and is used in actual use
The power needed for load is overcome to be far below the peak power of engine, unnecessary power is generally lost with tyre slip or torque-converters
Speed consumes, and causes that overall efficiency is low, excessive oil consumption.In the conventional method, can be solved using engine variable power control technology
Certainly the problem of excessive oil consumption, the technology selects corresponding engine by Variable power engine according to gearbox-gear signal
Curve, this method limit engine power, reach the effect of energy-conservation.However, when in face of wider use range, such as simultaneously
When needing smooth low speed essence and high speed transition operation, the method for existing Variable power regulation is restricted.
The content of the invention
In view of this, the invention solves a technical problem be to provide a kind of land leveller control device, method and
Land leveller.
According to an aspect of the present invention, there is provided a kind of land leveller control device, including：Multi-state selecting switch, speed change
Gear box control module, controller module and electronic engine control module；The multi-state selecting switch and the gearbox-gear
Control module electrically connects with the controller module respectively, and the controller module electrically connects with the electronic engine control module；
The controller module receives control model information and the gearbox-gear control mould that the multi-state selecting switch is sent
The gear information of block transmission is simultaneously encoded, and coding information is sent into the electronic engine control module；It is described engine electric-controlled
Module determines power curve corresponding with the coding information, and based on the power output of power curve control engine.
Alternatively, in addition to：E-Gas；The electronic engine control module is respectively with the E-Gas and starting electromechanics
Connection；The electronic engine control module is started based on the throttle signal generation that the power curve and the E-Gas are sent
Machine control signal.
Alternatively, in addition to：Speed change tank module and drive axle；The gearbox-gear control module sends gear information
To the speed change tank module, the speed change tank module drives the drive axle to run under the driving of the engine.
Alternatively, in addition to：The speed change tank module includes：Hydraulic transmission box and mechanical gear box；Wherein, in engine
When rotating speed reaches rotary speed threshold value, the electronic engine control module controls the hydraulic transmission box locking；When engine speed is less than
During the rotary speed threshold value, the electronic engine control module controls the hydraulic transmission box unblock.
Alternatively, in addition to：Display module, respectively with the controller module, speed change tank module and described starting electromechanics
Connection, for showing the work state information and warning information of land leveller；The work state information includes：Engine power
The state of switching state, hydraulic transmission box locking and unblock.
Alternatively, the multi-state selecting switch has the position of the switch corresponding with various control pattern, wherein, it is described more
Kind control model includes：Economic model, dynamic mode, velocity mode；
Alternatively, when the control model is the economic model, the dynamic mode, passed using wool(l)y-type engine
Pass pattern；When the control model is the velocity mode, using rev-happy engine transfer mode.
According to another aspect of the present invention, there is provided a kind of land leveller, including：Land leveller control device as described above.
According to another aspect of the invention, there is provided a kind of land leveller control method, including：The multi-state selection is received to open
Close the gear information that the control model information sent and the gearbox-gear control module are sent and encoded；Coding is believed
Breath is sent to the electronic engine control module, so that the electronic engine control module determines power corresponding with the coding information
Curve, and based on the power output of power curve control engine.
Alternatively, the throttle letter that the electronic engine control module is sent based on the power curve and the E-Gas
Number generation engine control signal.
Alternatively, gear information is sent to the speed change tank module, the speed change by the gearbox-gear control module
Tank module drives the drive axle to walk under the driving of the engine.
Alternatively, the speed change tank module includes：Hydraulic transmission box and mechanical gear box；Reach rotating speed in engine speed
During threshold value, the hydraulic transmission box locking is controlled；When engine speed is less than the rotary speed threshold value, the fluid power speed change is controlled
Case unlocks.
Alternatively, display module shows the work state information and warning information of land leveller；Wherein, the working condition
Information includes：The state of engine power switching state, hydraulic transmission box locking and unblock.
Alternatively, the multi-state selecting switch has the position of the switch corresponding with various control pattern, wherein, it is described more
Kind control model includes：Economic model, dynamic mode, velocity mode；When the control model is the economic model, described dynamic
During force mode, using wool(l)y-type engine transfer mode；When the control model is the velocity mode, sent out using high rotating speed
Motivation transfer mode.
Land leveller control device, method and the land leveller of the present invention, receive the control mould that multi-state selecting switch is sent
Formula information and the gear information of gearbox-gear control module transmission are simultaneously encoded, and electronic engine control module determines to believe with coding
Power curve corresponding to breath, and based on the power output of power curve control engine, can be chosen according to specific duty requirements
Different control models, corresponding power curve is exported in different modes, efficiently avoid complete machine under Variable power state makes
With the less limitation of scope, avoid land leveller under different operating modes the problem of loss in efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the module connection diagram according to one embodiment of the land leveller control device of the present invention；
Fig. 2 is the power curve schematic diagram in one embodiment according to the land leveller control device of the present invention；
Fig. 3 is the schematic flow sheet according to one embodiment of the land leveller control method of the present invention.
Embodiment
The present invention is described more fully with reference to the accompanying drawings, wherein illustrating the exemplary embodiment of the present invention.Under
The accompanying drawing that face will be combined in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, and shows
So, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is all belonged to
In the scope of protection of the invention.
Fig. 1 is according to the module diagram of one embodiment of the land leveller control device of the present invention, as shown in figure 1, originally
Invention provides a kind of land leveller control device, including：Multi-state selecting switch 1, gearbox-gear control module 2, controller mould
Block 3, electronic engine control module 4, display 5 and E-Gas 6.Multi-state selecting switch 1 and gearbox-gear control module 2 are divided
Do not electrically connected with controller module 3, controller module 3 electrically connects with electronic engine control module 4.
Controller module 3 receives the control model information and gearbox-gear control module 2 that multi-state selecting switch 1 is sent
The gear information of transmission is simultaneously encoded, and coding information is sent into electronic engine control module 4, electronic engine control module 4 determines
Power curve corresponding with coding information, and based on the power output of power curve control engine.Coding information can be more
Kind.Electronic engine control module 4 electrically connects with E-Gas 6 and engine 7 respectively, and electronic engine control module 4 is based on power curve
And the throttle signal generation engine control signal that E-Gas 6 is sent.
Controller module 3 can identify that the information that multi-state selecting switch 1 and gearbox-gear control module 2 are sent is gone forward side by side
Row coding, and coding information is passed into electronic engine control module 4, electronic engine control module 4 reads coding information and carries out phase
The curve output answered, output information feed back to controller module 3 by electronic engine control module 4, and controller module 3 passes it to
Display 5, power switching state is shown by display 5.
As shown in Fig. 2 setting the power curve under five different operating modes in electronic engine control module 4, five can be exported
Power curve.The power curve set in electronic engine control module 4 is not limited to five.By to multi-state selecting switch and change
Coding information after the information that fast gear box control module is sent is encoded determines that electronic engine control module 4 exports different work(
Rate curve, land leveller can be made to export corresponding power when in face of different operating modes, improve complete machine power performance and fuel economy,
Really realize a tractor serves several purposes.
Gear information is sent to speed change tank module 8 by gearbox-gear control module 2, and speed change tank module 8 is in engine 7
Driving is lower to drive drive axle 9 to run.Driver can determine the position of multi-state selecting switch 1, controller according to actual condition
Module 3 receives position signalling and encoded.Driver carries out hanging shelves operation, and speed change tank module 8 is under the driving of engine
Gear signal action is performed, drives drive axle 9 to walk.Gear signal is passed to controller mould by gearbox-gear control module 2
Block 3, controller module 3 receive the gear signal and encoded.
Coding information is passed to electronic engine control module 4 by controller module 3, and electronic engine control module 4 receives the coding
Information simultaneously carries out corresponding power curve output, and the power curve information of output is fed back into controller module 3, controller mould
Block 3 controls display 5 to show power switching state.
Speed change tank module 8 includes：Hydraulic transmission box and mechanical gear box.When engine speed reaches rotary speed threshold value, liquid
Power gearbox locking, when engine speed is less than rotary speed threshold value, hydraulic transmission box unblock.Rotary speed threshold value can be configured.
Display 5 can show the work state information and warning information of land leveller.Work state information includes：Engine power is cut
Change state of state, hydraulic transmission box locking and unblock etc..Electronic engine control module 4 can be connected with speed change tank module 8, can be with
Hydraulic transmission box locking or unblock are controlled by electronic engine control module 4.
For example, hydraulic transmission box can be in the presence of E-Gas 6, when engine speed is raised to rotary speed threshold value
When more than (1000rpm), electronic engine control module 4 controls hydraulic transmission box locking, becomes machine driving to improve operating efficiency,
When engine speed drops to rotary speed threshold value (1000rpm) below, electronic engine control module 4 controls hydraulic transmission box unblock, becomes
Into hydraulic mechanical to improve torque output.
In one embodiment, it is as shown in table 1 below, the control model under multi-state is divided into 3 kinds, it is corresponding under each pattern
Different engine power curves, the control model under multi-state are not limited to 3 kinds, and five are set in electronic engine control module not
With the power curve (P1/P2/P3/P4/P5) under operating mode, F/R is to correspond to different operations.Multi-state selecting switch 1 has
The position of the switch corresponding with various control pattern, various control pattern include：E patterns economic model, P patterns (dynamic mode), S
Pattern (velocity mode) etc..The control model of acquiescence is P patterns (dynamic mode).E patterns (economic model), P patterns (power mould
Formula) wool(l)y-type engine transfer mode, engine speed rated speed 2000rpm are used, S mode (velocity mode) is turned using high
Fast engine transfer mode, engine speed rated speed 2200rpm.Driver can select E according to the difference of specific operating mode
Pattern or selection S mode, to reduce unnecessary power loss, on the premise of complete machine dynamic property is met, reach the mesh of energy-conservation
's.
Control model table under table 1- multi-states
In one embodiment, the present invention provides a kind of land leveller, including the as above land leveller control dress of any embodiment
Put.
Land leveller control device, land leveller in above-described embodiment, receive the control model that multi-state selecting switch is sent
Information and the gear information of gearbox-gear control module transmission are simultaneously encoded, and electronic engine control module determines and coding information
Corresponding power curve, and based on the power output of power curve control engine, can be chosen not according to specific duty requirements
Same control model, exports corresponding power curve in different modes, efficiently avoid complete machine under Variable power state and uses
The less limitation of scope, avoid land leveller under different operating modes the problem of loss in efficiency, machine energy-saving and dynamic property can be lifted.
Fig. 3 be according to the present invention land leveller control method one embodiment schematic flow sheet, as shown in Figure 3：
Step 301, the control model information and gearbox-gear control module 2 for receiving the transmission of multi-state selecting switch are sent
Gear information and encoded.
Step 302, coding information is sent to electronic engine control module, so that electronic engine control module determines to believe with coding
Power curve corresponding to breath, and based on the power output of power curve control engine.
In one embodiment, the throttle signal life that electronic engine control module is sent based on power curve and E-Gas
Into engine control signal.Gear information is sent to speed change tank module by gearbox-gear control module, and speed change tank module is being sent out
Drive axle walking is driven under the driving of motivation 7.
Speed change tank module includes：Hydraulic transmission box and mechanical gear box.When engine speed reaches rotary speed threshold value, fluid power
Gearbox locking.When engine speed is less than rotary speed threshold value, hydraulic transmission box unblock.Display module shows the work of land leveller
Status information and warning information, work state information include：Engine power switching state, hydraulic transmission box locking and unblock
State etc..
Multi-state selecting switch has the position of the switch corresponding with various control pattern, and various control pattern includes：It is economical
Pattern, dynamic mode, velocity mode etc..Economic model, dynamic mode use wool(l)y-type engine transfer mode, and velocity mode is used
Using rev-happy engine transfer mode.
Land leveller control device, method and land leveller in above-described embodiment, receive what multi-state selecting switch was sent
The gear information that control model information and gearbox-gear control module are sent simultaneously is encoded, electronic engine control module determine with
Power curve corresponding to coding information, and based on the power output of power curve control engine, can be according to specific operating mode need
Ask and choose different control models, export corresponding power curve in different modes, efficiently avoid under Variable power state
The less limitation of complete machine use range, avoid land leveller under different operating modes the problem of loss in efficiency, realize machine energy-saving and
While dynamic property is lifted, a tractor serves several purposes is really realized.
The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for method is only
Order described in detail above is not limited in order to illustrate, the step of method of the invention, is especially said unless otherwise
It is bright.In addition, in certain embodiments, the present invention can be also embodied as recording program in the recording medium, these programs include
For realizing the machine readable instructions of the method according to the invention.Thus, the present invention also covering storage is used to perform according to this hair
The recording medium of the program of bright method.
Description of the invention provides for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be to more preferably illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The present invention is solved so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (15)
- A kind of 1. land leveller control device, it is characterised in that including：Multi-state selecting switch (1), gearbox-gear control module (2), controller module (3) and electronic engine control module (4)； The multi-state selecting switch (1) and the gearbox-gear control module (2) are electrically connected with the controller module (3) respectively Connect, the controller module (3) electrically connects with the electronic engine control module (4)；The controller module (3) receives described more The gear information that the control model information and the gearbox-gear control module (2) that operating mode selecting switch (1) is sent are sent is simultaneously Encoded, coding information is sent to the electronic engine control module (4)；The electronic engine control module (4) determines and institute Power curve corresponding to coding information is stated, and based on the power output of power curve control engine.
- 2. control device as claimed in claim 1, it is characterised in that also include：E-Gas (6)；The electronic engine control module (4) electrically connects with the E-Gas (6) and engine (7) respectively； The throttle signal generation hair that the electronic engine control module (4) is based on the power curve and the E-Gas (6) is sent Motivation control signal.
- 3. control device as claimed in claim 2, it is characterised in thatGear information is sent to the speed change tank module (8), the speed change tank module by the gearbox-gear control module (2) (8) drive axle (9) is driven to run under the driving of the engine (7).
- 4. control device as claimed in claim 3, it is characterised in thatThe speed change tank module (8) includes：Hydraulic transmission box and mechanical gear box；Wherein, rotating speed threshold is reached in engine speed During value, the electronic engine control module (4) controls the hydraulic transmission box locking；When engine speed is less than the rotary speed threshold value When, the electronic engine control module (4) controls the hydraulic transmission box unblock.
- 5. control device as claimed in claim 4, it is characterised in that also include：Display module, electrically connect, be used for the controller module (3), speed change tank module (8) and the engine (7) respectively Show the work state information and warning information of land leveller；The work state information includes：Engine power switching state, Hydraulic transmission box locking and the state of unblock.
- 6. control device as claimed in claim 1, it is characterised in thatThe multi-state selecting switch (1) has the position of the switch corresponding with various control pattern, wherein, the various control mould Formula includes：Economic model, dynamic mode, velocity mode.
- 7. control device as claimed in claim 6, it is characterised in thatWhen the control model is the economic model, the dynamic mode, using wool(l)y-type engine transfer mode；Work as institute When to state control model be the velocity mode, using rev-happy engine transfer mode.
- A kind of 8. land leveller, it is characterised in that including：Land leveller control device as described in any one of claim 1 to 7.
- A kind of 9. land leveller control method, it is characterised in that including：The gear information that the control model information and gearbox-gear control module that reception multi-state selecting switch is sent are sent is simultaneously Encoded；Coding information is sent to electronic engine control module, so that the electronic engine control module determines and the coding information pair The power curve answered, and based on the power output of power curve control engine.
- 10. control method as claimed in claim 9, it is characterised in thatThe electronic engine control module is started based on the throttle signal generation that the power curve and the E-Gas are sent Machine control signal.
- 11. control method as claimed in claim 10, it is characterised in thatGear information is sent to the speed change tank module by the gearbox-gear control module, and the speed change tank module is described The drive axle is driven to walk under the driving of engine.
- 12. control method as claimed in claim 11, it is characterised in that the speed change tank module includes：Hydraulic transmission box and Mechanical gear box；Methods described also includes：When engine speed reaches rotary speed threshold value, the hydraulic transmission box locking is controlled；When engine speed is less than described turn During fast threshold value, the hydraulic transmission box is controlled to unlock.
- 13. control method as claimed in claim 12, it is characterised in thatDisplay module shows the work state information and warning information of land leveller；Wherein, the work state information includes：Hair Motivation power switching state, hydraulic transmission box locking and the state of unblock.
- 14. control method as claimed in claim 9, it is characterised in that the multi-state selecting switch has and various control The position of the switch corresponding to pattern, wherein, the various control pattern includes：Economic model, dynamic mode, velocity mode.
- 15. control method as claimed in claim 14, it is characterised in that also include：When the control model is the economic model, the dynamic mode, using wool(l)y-type engine transfer mode；Work as institute When to state control model be the velocity mode, using rev-happy engine transfer mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605328.XA CN107882090A (en) | 2017-07-24 | 2017-07-24 | Land leveller control device, method and land leveller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605328.XA CN107882090A (en) | 2017-07-24 | 2017-07-24 | Land leveller control device, method and land leveller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107882090A true CN107882090A (en) | 2018-04-06 |
Family
ID=61780454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710605328.XA Pending CN107882090A (en) | 2017-07-24 | 2017-07-24 | Land leveller control device, method and land leveller |
Country Status (1)
| Country | Link |
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| CN (1) | CN107882090A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132666A (en) * | 2021-12-08 | 2022-03-04 | 福建龙马环卫装备股份有限公司 | Multi-gear output power adjusting system and method |
| CN114715118A (en) * | 2022-04-21 | 2022-07-08 | 潍柴雷沃重工股份有限公司 | Energy-saving consumption-reducing method, system, medium, equipment and agricultural machine for agricultural machinery |
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| US20120199371A1 (en) * | 2009-10-14 | 2012-08-09 | Komatsu Ltd. | Engine speed control device and motor grader including the same |
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| CN203412666U (en) * | 2013-06-27 | 2014-01-29 | 山东临工工程机械有限公司 | Variable-power control system for land leveler |
| CN203878634U (en) * | 2014-02-27 | 2014-10-15 | 湖南三一路面机械有限公司 | Gearshift control system of grader and grader |
| KR20170004584A (en) * | 2015-07-03 | 2017-01-11 | 두산인프라코어 주식회사 | Control apparatus and control method for a construction machinery |
| CN207348122U (en) * | 2017-07-24 | 2018-05-11 | 徐州徐工筑路机械有限公司 | Land leveller control device and land leveller |
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2017
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| US20120199371A1 (en) * | 2009-10-14 | 2012-08-09 | Komatsu Ltd. | Engine speed control device and motor grader including the same |
| US8478470B1 (en) * | 2012-05-31 | 2013-07-02 | Caterpillar Inc. | Drivetrain system having rate-limited feedforward fueling |
| CN203412666U (en) * | 2013-06-27 | 2014-01-29 | 山东临工工程机械有限公司 | Variable-power control system for land leveler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132666A (en) * | 2021-12-08 | 2022-03-04 | 福建龙马环卫装备股份有限公司 | Multi-gear output power adjusting system and method |
| CN114715118A (en) * | 2022-04-21 | 2022-07-08 | 潍柴雷沃重工股份有限公司 | Energy-saving consumption-reducing method, system, medium, equipment and agricultural machine for agricultural machinery |
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Application publication date: 20180406 |