CN114321039A - Novel electric tractor hydraulic system - Google Patents
Novel electric tractor hydraulic system Download PDFInfo
- Publication number
- CN114321039A CN114321039A CN202111513239.5A CN202111513239A CN114321039A CN 114321039 A CN114321039 A CN 114321039A CN 202111513239 A CN202111513239 A CN 202111513239A CN 114321039 A CN114321039 A CN 114321039A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- oil
- output
- port
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 110
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 36
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a novel hydraulic system of an electric tractor, which comprises a hydraulic oil tank, an oil pump motor, a gear pump, a hydraulic working device and an oil mass sensor, wherein the input end of the gear pump extends into the hydraulic oil tank through a first oil pipeline, the output end of the gear pump is connected with a hydraulic flow dividing valve through a second pipeline, and the hydraulic flow dividing valve is provided with an output port A and an output port B. The hydraulic oil pump is connected with the hydraulic flow divider valve, the hydraulic flow divider valve is divided into two paths of output to supply a hydraulic steering gear, a plurality of paths of hydraulic output valves and a hydraulic lifter, hydraulic oil enters an L oil cavity or an R oil cavity of a front axle steering oil cylinder through the left-right rotation of the hydraulic steering gear, the walking steering of the electric tractor is realized, an oil pressure sensor and a motor control system are added to adjust the working rotating speed of a gear pump, the size and the flow of a pump pressure are changed according to the working condition and the pipeline load, a power source is used for driving a plurality of hydraulic systems to work, the working pressure and the use frequency of the system are controllable, and the purposes of saving electricity of the electric tractor and controlling the temperature rise of the motor are achieved.
Description
Technical Field
The invention relates to the field of electric tractors, in particular to a novel hydraulic system of an electric tractor.
Background
The tractor is the indispensable mechanical equipment in agricultural production, can be used to arable land, seeding, fertilization, transportation etc.. The tractor mainly comprises a running system, a working device system, a steering system and the like, wherein the steering system is mainly driven by hydraulic pressure.
The existing hydraulic driving device for the electric tractor has the problem of power source dispersion, and the rotating speed of the motor cannot be adjusted according to the load change of a hydraulic system, so that the device is easily damaged due to the fact that the motor is heated too fast, and the energy utilization rate of the electric tractor is low due to the fact that the power consumption of the motor is increased due to the too high rotating speed of the motor.
Therefore, it is necessary to develop a new hydraulic system for an electric tractor to solve the above problems.
Disclosure of Invention
The invention aims to provide a novel hydraulic system of an electric tractor, which aims to solve the problems that the existing hydraulic driving device for the electric tractor has the problem of power source dispersion, the cost is increased, the hydraulic system cannot adjust the rotating speed of a motor according to load change, the device is damaged due to the fact that the motor is heated too fast, the power consumption of the motor is increased due to the too high rotating speed of the motor, the energy utilization rate of the electric tractor is low and the like.
In order to achieve the above purpose, the invention provides the following technical scheme: a novel hydraulic system of an electric tractor comprises a hydraulic oil tank and a gear pump, wherein the input end of the gear pump extends into the hydraulic oil tank through a first oil pipeline, the output end of the gear pump is connected with a hydraulic flow divider valve through a second pipeline, the hydraulic flow divider valve is provided with an output A port and an output B port, the connecting end of the output A port is provided with a hydraulic steering gear, the output end of the hydraulic steering gear is provided with a front axle steering oil cylinder, the front axle steering oil cylinder comprises an L oil cavity and an R oil cavity, a left steering oil port of the hydraulic steering gear is communicated with the L oil cavity, a right steering oil port of the hydraulic steering gear is communicated with the R oil cavity, the connecting end of the output B port is provided with a multi-path hydraulic output valve, and the connecting end of the multi-path hydraulic output valve is provided with a hydraulic lifter;
an oil pressure sensor is arranged in an output pipeline of the output port B, a VCU module is arranged at the connecting end of the oil pressure sensor, an A/D converter is arranged at the input end of the VCU module, a D/A converter is arranged at the output end of the VCU module, the oil pressure sensor is electrically connected with the A/D converter, a motor controller is arranged at the connecting end of the gear pump, an oil pump motor is arranged at one side of the gear pump, an output shaft of the oil pump motor is in transmission connection with a gear shaft of the gear pump, and the oil pump motor is electrically connected with the D/A converter;
the inner part of the output port B is provided with a regulating valve which is used for controlling a multi-path hydraulic output valve, a hydraulic lifter connecting pipeline passage and the flow of hydraulic oil;
the output port A is communicated with an oil inlet of the hydraulic steering gear through a third pipeline, and an oil return port of the hydraulic steering gear extends into the hydraulic oil tank through a first oil return pipeline;
the first oil return pipeline is communicated with an oil return opening of the hydraulic flow divider valve, and a pressure valve is arranged in the first oil return pipeline;
and an oil return port of the multi-path hydraulic output valve extends to the inside of the hydraulic oil tank through a second oil return pipeline.
Preferably, the oil return port of the hydraulic lifter extends to the inside of the hydraulic oil tank through a third oil return pipeline.
Preferably, the oil pump motor is controlled by a motor controller.
In the technical scheme, the invention provides the following technical effects and advantages:
the hydraulic oil pump is connected with the hydraulic flow divider valve, the hydraulic flow divider valve is divided into two paths of output to supply a hydraulic steering gear, a plurality of paths of hydraulic output valves and a hydraulic lifter, hydraulic oil enters an L oil cavity or an R oil cavity of a front axle steering oil cylinder through the left-right rotation of the hydraulic steering gear, the walking steering of the electric tractor is realized, an oil pressure sensor and a motor control system are additionally arranged to adjust the power adjustment of a gear pump, the size of the pump pressure and the oil supply quantity are changed according to the working condition and the pipeline load, the driving of a plurality of hydraulic systems by one power source is realized, the working pressure and the using frequency of the system are controllable, the electric tractor is realized, the electric tractor has the remarkable advantages of energy conservation, environmental protection and the like, the load sensitivity of the hydraulic systems and the automatic adjustment of the motor rotating speed are realized, and the purposes of saving electricity and controlling the motor temperature rise of the electric tractor are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a flow chart of the pump speed control system of the present invention.
Description of reference numerals:
the hydraulic control system comprises a hydraulic oil tank 1, a gear pump 2, a hydraulic flow divider 3, a hydraulic steering gear 4, a front axle steering oil cylinder 5, an oil pump motor 6, a motor controller 7, a VCU module 8, an oil pressure sensor 9, a multi-path hydraulic output valve 10 and a hydraulic lifter 11.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
The invention provides a novel hydraulic system of an electric tractor as shown in figures 1-2, which comprises a hydraulic oil tank 1 and a gear pump 2, wherein the input end of the gear pump 2 extends into the hydraulic oil tank 1 through a first oil pipeline, the output end of the gear pump 2 is connected with a hydraulic flow divider valve 3 through a second pipeline, the hydraulic flow divider valve 3 is provided with an output A port and an output B port, the connecting end of the output A port is provided with a hydraulic steering gear 4, the output end of the hydraulic steering gear 4 is provided with a front axle steering oil cylinder 5, the front axle steering oil cylinder 5 comprises an L oil cavity and an R oil cavity, a left steering oil port of the hydraulic steering gear 4 is communicated with the L oil cavity, a right steering oil port of the hydraulic steering gear 4 is communicated with the R oil cavity, the connecting end of the output B port is provided with a multi-path hydraulic output valve 10, and the connecting end of the multi-path hydraulic output valve 10 is provided with a hydraulic lifter 11, the gear pump 2 pumps hydraulic oil in the hydraulic oil tank 1 to the hydraulic flow divider valve 3, the hydraulic flow divider valve 3 divides the hydraulic oil into two paths, one path supplies the hydraulic steering gear 4 through an output port A, the hydraulic oil enters an L oil cavity or an R oil cavity of the front axle steering oil cylinder 5 through the left and right rotation of the hydraulic steering gear 4 to realize the walking steering of the electric tractor, and the other path supplies the multi-path hydraulic output valve 10 and the hydraulic lifter 11 of the electric tractor to work through an output port B of the hydraulic flow divider valve 3;
the inside oil pressure sensor 9 that is equipped with of output B mouth's output pipeline, oil pressure sensor 9's link is equipped with VCU module 8, VCU module 8's input is equipped with the AD converter, VCU module 8's output is equipped with the DA converter, oil pressure sensor 9 and AD converter electric connection, the link of gear pump 2 is equipped with machine controller 7, 2 one side of gear pump is equipped with oil pump motor 6, and 6 output shaft transmission of oil pump motor connect gear pump 2's gear shaft, oil pump motor 6 and DA converter electric connection, 6 output shafts of oil pump motor pass through the shaft coupling with the gear shaft and can dismantle the connection.
Furthermore, in the above technical solution, an adjusting valve is arranged inside the outlet B, and the adjusting valve is used for controlling the connecting pipeline passage of the multi-path hydraulic output valve 10 and the hydraulic lifter 11 and the flow rate of hydraulic oil, so as to improve the applicability of the system.
Further, in the above technical scheme, the output port a is communicated with the oil inlet of the hydraulic steering gear 4 through a third pipeline, and the oil return port of the hydraulic steering gear 4 extends into the hydraulic oil tank 1 through the first oil return pipeline to perform oil return collection and cooling treatment.
Furthermore, in the above technical scheme, the first oil return pipeline is communicated with an oil return port of the hydraulic flow divider valve 3, and a pressure valve is arranged in the first oil return pipeline for pressure stabilization and pressure regulation release, so that the stability of the hydraulic system is improved.
Further, in the above technical solution, an oil return port of the multi-path hydraulic output valve 10 extends to the inside of the hydraulic oil tank 1 through a second oil return pipeline, and performs oil return collection and cooling treatment.
Further, in the above technical solution, an oil return port of the hydraulic lifter 11 extends to the inside of the hydraulic oil tank 1 through a third oil return pipeline, and performs oil return collection and cooling treatment.
Further, in the above technical solution, the oil pump motor 6 is controlled by the motor controller 7, and the oil pump motor 6 is set as a speed-adjustable motor.
Referring to the attached figures 1-2 of the specification, when the system is used, hydraulic oil is added into a hydraulic oil tank 1, an oil pump motor 6 is started to enable an output shaft of the oil pump motor to rotate a gear pump 2, the hydraulic oil in the hydraulic oil tank 1 is pumped to a hydraulic flow divider valve 3, the hydraulic flow divider valve 3 divides the hydraulic oil into two paths, one path of the hydraulic oil is supplied to a hydraulic steering gear 4 through an output port A, the hydraulic oil enters an L oil cavity or an R oil cavity of a front axle steering oil cylinder 5 through the left-right rotation of the hydraulic steering gear 4 to realize the walking steering of an electric tractor, the other path of the hydraulic oil is supplied to a multi-path hydraulic output valve 10 and a hydraulic lifter 11 of the electric tractor through an output port B of the hydraulic flow divider valve 3 to work, an oil pressure sensor 9 is added at the output port B, the oil pressure inside a connecting pipeline is sensed by the output port B, a real-time sensing value is sent to a VCU module 8 for analysis processing, and the rotating speed of the motor is adjusted by the motor controller 6, realize 2 power regulation of gear pump, electric tractor's multichannel hydraulic pressure output valve 10 and hydraulic pressure lifting mechanism 11 are not frequent work, when multichannel hydraulic pressure output valve 10 and hydraulic pressure lifting mechanism 11 are out of work, oil pressure sensor 9 detects the low load, let the motor work with the low speed of settlement this moment, when multichannel hydraulic pressure output valve 10 and hydraulic pressure lifting mechanism 11 during operation, oil pressure sensor 9 detects the high load, let the motor work with the high speed of settlement this moment, the realization drives a plurality of hydraulic system work with a power supply, and the operating pressure and the frequency of use of different systems are different, let the motor work as far as possible can reach the temperature rise of power saving and control motor at low load and low rotational speed.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (3)
1. The utility model provides a novel electric tractor hydraulic system, includes hydraulic tank (1) and gear pump (2), its characterized in that: the input end of the gear pump (2) extends to the interior of the hydraulic oil tank (1) through a first oil pipeline, the output end of the gear pump (2) is connected with a hydraulic flow divider valve (3) through a second pipeline, the hydraulic flow divider valve (3) is provided with an output A port and an output B port, the connecting end of the output A port is provided with a hydraulic steering gear (4), the output end of the hydraulic steering gear (4) is provided with a front axle steering oil cylinder (5), the front axle steering oil cylinder (5) comprises an L oil cavity and an R oil cavity, a left steering oil port of the hydraulic steering gear (4) is communicated with the L oil cavity, a right steering oil port of the hydraulic steering gear (4) is communicated with the R oil cavity, the connecting end of the output B port is provided with a multi-path hydraulic output valve (10), and the connecting end of the multi-path hydraulic output valve (10) is provided with a hydraulic lifter (11);
an oil pressure sensor (9) is arranged inside an output pipeline of the output port B, a VCU (vertical control unit) module (8) is arranged at the connecting end of the oil pressure sensor (9), an A/D (analog/digital) converter is arranged at the input end of the VCU module (8), a D/A (digital/analog) converter is arranged at the output end of the VCU module (8), the oil pressure sensor (9) is electrically connected with the A/D converter, a motor controller (7) is arranged at the connecting end of the gear pump (2), an oil pump motor (6) is arranged on one side of the gear pump (2), an output shaft of the oil pump motor (6) is in transmission connection with a gear shaft of the gear pump (2), and the oil pump motor (6) is electrically connected with the D/A converter;
the inner part of the output port B is provided with a regulating valve which is used for controlling a connecting pipeline passage of a multi-path hydraulic output valve (10) and a hydraulic lifter (11) and the flow of hydraulic oil;
the output port A is communicated with an oil inlet of the hydraulic steering gear (4) through a third pipeline, and an oil return port of the hydraulic steering gear (4) extends into the hydraulic oil tank (1) through a first oil return pipeline;
the first oil return pipeline is communicated with an oil return opening of the hydraulic flow divider valve (3), and a pressure valve is arranged in the first oil return pipeline;
and an oil return port of the multi-path hydraulic output valve (10) extends to the interior of the hydraulic oil tank (1) through a second oil return pipeline.
2. The novel hydraulic system for electric tractors according to claim 1, characterized in that: and an oil return port of the hydraulic lifter (11) extends to the interior of the hydraulic oil tank (1) through a third oil return pipeline.
3. The novel hydraulic system for electric tractors according to claim 1, characterized in that: and the oil pump motor (6) is controlled by a motor controller (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111513239.5A CN114321039A (en) | 2021-12-12 | 2021-12-12 | Novel electric tractor hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111513239.5A CN114321039A (en) | 2021-12-12 | 2021-12-12 | Novel electric tractor hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114321039A true CN114321039A (en) | 2022-04-12 |
Family
ID=81050835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111513239.5A Pending CN114321039A (en) | 2021-12-12 | 2021-12-12 | Novel electric tractor hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114321039A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168237A (en) * | 2016-09-14 | 2016-11-30 | 河南瑞创通用机械制造有限公司 | A kind of tractor hydraulic system assembly |
| CN109026867A (en) * | 2018-09-25 | 2018-12-18 | 杭叉集团股份有限公司 | The energy-saving hydraulic system of large-tonnage storage battery forktruck |
| CN208980278U (en) * | 2018-10-17 | 2019-06-14 | 成都新一驱动科技有限责任公司 | A kind of Multifunctional AC electri forklift hydraulic control system |
| CN111891215A (en) * | 2020-07-15 | 2020-11-06 | 哈尔滨哈铁装备制造有限公司 | Steering system of road-rail dual-purpose vehicle |
-
2021
- 2021-12-12 CN CN202111513239.5A patent/CN114321039A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168237A (en) * | 2016-09-14 | 2016-11-30 | 河南瑞创通用机械制造有限公司 | A kind of tractor hydraulic system assembly |
| CN109026867A (en) * | 2018-09-25 | 2018-12-18 | 杭叉集团股份有限公司 | The energy-saving hydraulic system of large-tonnage storage battery forktruck |
| CN208980278U (en) * | 2018-10-17 | 2019-06-14 | 成都新一驱动科技有限责任公司 | A kind of Multifunctional AC electri forklift hydraulic control system |
| CN111891215A (en) * | 2020-07-15 | 2020-11-06 | 哈尔滨哈铁装备制造有限公司 | Steering system of road-rail dual-purpose vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107816464B (en) | Hydraulic driving system of pneumatic type paddy planter | |
| CN105711581B (en) | A kind of control method of stepless speed changing tractor control system | |
| CN106900234B (en) | Driving system of rice transplanter | |
| CN103518434A (en) | Rear suspension electric lifting device of tractor | |
| CN216833885U (en) | Hydraulic device for electric tractor | |
| CN207673637U (en) | A kind of Pneumatic type paddy planter fluid power system | |
| CN102848914A (en) | Hydraulic continuously-variable drive axle assembly | |
| CN114321039A (en) | Novel electric tractor hydraulic system | |
| CN202399904U (en) | Power takeoff for agricultural tractor | |
| CN205524228U (en) | Infinitely variable tractor control system | |
| CN110637570B (en) | Control method of full hydraulic drive high-speed transplanter chassis | |
| CN104196788A (en) | Hydraulically-driven corn straw crushing and returning device and use method thereof | |
| CN201047364Y (en) | Tandem type multiple motor hydraulic circuit system | |
| CN212588954U (en) | Grain threshing and crushing control system of corn grain direct-harvesting combine harvester | |
| CN207945141U (en) | A kind of Agricultural Machinery Equipment electric-controlled hydraulic suspension arrangement | |
| CN113575116B (en) | Triangular crawler harvester for ratooning rice | |
| CN113575115B (en) | Wheel-track combined regenerated rice combine harvester | |
| CN204231951U (en) | The dual-purpose type fluid pressure drive device of the ceding of Taiwan | |
| CN210153008U (en) | Servo energy-saving silent oil source for electro-hydraulic servo dynamic test of testing machine | |
| CN113503278A (en) | Electro-hydraulic control system and tractor | |
| CN103010014A (en) | Electrohydraulic hybrid driving system for seedling planting machine | |
| CN208605586U (en) | The large-scale stepless adjustable system of cropper feeding unit | |
| CN101929492A (en) | Be used to control the device of equipment with oil hydraulic circuit | |
| CN207744354U (en) | A kind of intelligence control hydraulic-driven aspirated-air type winter wheat broadcasting device | |
| CN207516782U (en) | A kind of tractor tilling depth automaton adjusted based on torque |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220412 |