CN112470586A - Bidirectional control electro-hydraulic suspension system of tractor - Google Patents
Bidirectional control electro-hydraulic suspension system of tractor Download PDFInfo
- Publication number
- CN112470586A CN112470586A CN202011429155.9A CN202011429155A CN112470586A CN 112470586 A CN112470586 A CN 112470586A CN 202011429155 A CN202011429155 A CN 202011429155A CN 112470586 A CN112470586 A CN 112470586A
- Authority
- CN
- China
- Prior art keywords
- lifter
- proportional solenoid
- solenoid valve
- hydraulic
- tractor
- 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
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
- A01B63/1117—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements using a hitch position sensor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
- A01B63/114—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to achieve a constant working depth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0846—Electrical details
- F15B13/085—Electrical controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0846—Electrical details
- F15B13/086—Sensing means, e.g. pressure sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/04—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member with oscillating cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
- F15B2013/0448—Actuation by solenoid and permanent magnet
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
The invention belongs to the technical field of agricultural machinery, and particularly relates to a bidirectional control electro-hydraulic suspension system of a tractor, which comprises a lifter assembly and two proportional solenoid valves connected with the lifter assembly, wherein the proportional solenoid valves are a proportional solenoid valve I and a proportional solenoid valve II respectively; the hydraulic oil tank is simultaneously connected with the first proportional solenoid valve and the second proportional solenoid valve through a duplicate gear pump and then supplies hydraulic oil to two sub-assembly systems in the lifter assembly; the electric control system controls the proportional solenoid valve through the feedback signals of the two sub-assembly systems. The invention adopts two worm gears to realize the left-right balance of the operation depth, when the farming is not normal, the two hydraulic motors output signals through the controller module, so that the oil quantity of hydraulic oil entering the hydraulic motors is artificially reduced or increased, and the farming level is realized through automatic adjustment.
Description
Technical Field
The invention belongs to the technical field of agricultural machinery, and particularly relates to a bidirectional control electro-hydraulic suspension system of a tractor.
Background
The tractor usually articulates agricultural implement through hydraulic linkage and carries out field operation, and hydraulic linkage passes through hydraulic directional valve control hydraulic cylinder, promotes or descends agricultural implement, adjusts agricultural implement depth of operation. The uniformity of the field operation depth of the tractor directly influences the farming level. The current hydraulic suspension system can only realize the adjustment of the up-down operation depth, and can not realize the left-right balance adjustment of the operation depth for some uneven field blocks, thereby influencing the farming effect.
Disclosure of Invention
The technical problem of the invention is mainly solved by the following technical scheme:
a bidirectional control electro-hydraulic suspension system of a tractor is characterized by comprising a lifter assembly and two proportional solenoid valves connected with the lifter assembly, wherein the proportional solenoid valves are a proportional solenoid valve I and a proportional solenoid valve II respectively; the hydraulic oil tank is simultaneously connected with the first proportional solenoid valve and the second proportional solenoid valve through a duplicate gear pump and then supplies hydraulic oil to two sub-assembly systems in the lifter assembly; the electric control system controls the proportional solenoid valve through the feedback signals of the two sub-assembly systems.
The invention creatively:
(1) the worm and gear lifting is adopted
The traditional electro-hydraulic suspension system can only realize up-and-down tilling depth adjustment, but can not realize left-and-right balance adjustment, and can not realize automatic balance when a plurality of fields are uneven. So that a part of field cultivation can not meet the use requirement. The two worm gears can well solve the problem, when the farming is not normal, the two hydraulic motors output signals through the controller module, so that the oil quantity of hydraulic oil entering the hydraulic motors is artificially reduced or increased, and the farming level is realized through automatic adjustment.
(2) By using a double gear pump
The prior tractor electro-hydraulic suspension system adopts a single gear pump, realizes pressure balance through a distribution valve, is difficult to realize pressure balance, and has unstable output pressure. Adopt the duplicate gear pump can fine solution this problem, the duplicate gear pump is two hydraulic cylinder fuel feeding respectively, does not have mutual interference for it can be more accurate to adjust.
(3) Control of rotation of hydraulic motor by using proportional solenoid valve and angle sensor
The existing hydraulic control adopts a mechanical hydraulic valve, the biggest defects of the valve are that fine adjustment is difficult, the operation precision is not high, and the problem is solved by adopting a proportional solenoid valve and an angle sensor for control. The precision of the control depth can reach 1mm, and the left and right balance precision can reach 0.1 degree.
Preferably, the lifter assembly comprises a lifter shell, and two sub-assembly systems in the lifter shell have the same structure and comprise a hydraulic driving system and a lifter rotating arm which is matched with the hydraulic driving system and can rotate anticlockwise or clockwise under the driving of the hydraulic driving system.
Preferably, the hydraulic driving system comprises a lifter driving motor and a lifter angle sensor matched with the lifter driving motor in a matching mode, an output shaft of the lifter driving motor is connected with a lifter worm through a lifter connecting sleeve, a lifter worm wheel is matched with the lifter worm, a lifter rotating arm is fixed to a lifter connecting shaft of the lifter worm wheel, and the driving motor drives the lifter worm to drive the lifter worm wheel to rotate so that the lifter rotating arm can rotate to ascend or descend.
Preferably, the lifter connection sleeve is provided on the lifter connection shaft.
Preferably, the electric control system is linked with a lifter angle sensor of the hydraulic drive system, is simultaneously connected with the first proportional solenoid valve and the second proportional solenoid valve, receives a feedback signal of the lifter angle sensor, and controls the opening and closing degree of the proportional solenoid valves according to the feedback signal so as to control the supply amount of the hydraulic oil.
Preferably, the inlet ends of the first proportional solenoid valve and the second proportional solenoid valve are communicated with the hydraulic oil tank through a duplex gear pump; the outlet ends are respectively communicated with the lifter driving motors in the two hydraulic driving systems.
Therefore, the invention has the following advantages: (1) the invention adopts two worm gears to realize the left-right balance of the operation depth, when the farming is not normal, the two hydraulic motors output signals through the controller module, so that the oil quantity of hydraulic oil entering the hydraulic motors is artificially reduced or increased, and the farming level is realized through automatic adjustment. (2) The existing tractor electro-hydraulic suspension system adopts a single gear pump, realizes pressure balance through a distribution valve, is difficult to realize pressure balance, and has unstable output pressure. According to the invention, the double gear pump is adopted, and the double gear pump respectively supplies oil to the two hydraulic oil cylinders, so that mutual interference is avoided, and the adjustment can be more accurate. (3) The existing tractor hydraulic control mostly adopts a mechanical hydraulic valve which is difficult to finely adjust, so that the operation precision is not high. The invention adopts the proportional solenoid valve and the angle sensor to control the rotation of the hydraulic motor, thereby obviously improving the operation precision, controlling the depth precision to reach 1mm, and controlling the left and right balance precision to reach 0.1 degree.
Drawings
Fig. 1 is a schematic diagram of the present invention.
FIG. 2 is a schematic diagram of a neutron assembly system of the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b):
as shown in fig. 1 and 2, the hydraulic lifting device comprises a lifter assembly 1, a proportional solenoid valve 2, a controller module 3, a duplicate gear pump 4 and a hydraulic oil tank 5.
The lifter assembly comprises a lifter shell 101 and two sub-assembly systems arranged in the lifter shell 101, wherein the two sub-assembly systems have the same structure and comprise a lifter worm 102, a lifter connecting sleeve 103, a lifter driving motor 104, a lifter angle sensor 105, a lifter rotating arm 106, a lifter worm wheel 107 and a lifter connecting shaft 108; the two lifting rotating arms and the lifter connecting shaft are completely separated and move independently, the oil outlet of the hydraulic oil tank 5 is connected with the oil inlet of the double gear pump 4, hydraulic oil in the hydraulic oil tank 5 can be sucked when the external power drives the double gear pump 4 to rotate, the oil outlet of the double gear pump is connected with the oil inlet of the proportional solenoid valve 2 through a pipeline, and the two oil outlets of the proportional solenoid valve are respectively connected with the two oil inlets of the lifter driving motor.
When lifting is needed, after a certain switch is started, hydraulic oil in the duplicate gear pump 4 enters the lifter driving motor 104 through the proportional electromagnetic valve 2, the lifter driving motor 104 drives the lifter connecting shaft 108 and the lifter worm to rotate together, and therefore the lifter worm wheel 107, the lifter connecting shaft 108 and the lifter rotating arm are driven to rotate together, and the purpose of lifting a working part is achieved. When the horizontal height needs to be adjusted, the angle sensor sends an instruction to the lifter module 3, the electric signal is transmitted to the proportional solenoid valve 2, the rotating angle of a certain lifter motor is controlled by opening a valve core of the proportional solenoid valve, and therefore the angle difference of the two lifter rotating arms is changed artificially. Thereby achieving the purpose of changing the angle of the device.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms lifter assembly 1, proportional solenoid valve 2, controller module 3, double gear pump 4, hydraulic oil tank 5, lifter housing 101, lifter worm 102, lifter connecting sleeve 103, lifter drive motor 104, lifter angle sensor 105, lifter rotating arm 106, lifter worm gear 107, lifter connecting shaft 108, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (6)
1. A bidirectional control electro-hydraulic suspension system of a tractor is characterized by comprising a lifter assembly and two proportional solenoid valves connected with the lifter assembly, wherein the proportional solenoid valves are a proportional solenoid valve I and a proportional solenoid valve II respectively; the hydraulic oil tank is simultaneously connected with the first proportional solenoid valve and the second proportional solenoid valve through a duplicate gear pump and then supplies hydraulic oil to two sub-assembly systems in the lifter assembly; the electric control system controls the proportional solenoid valve through the feedback signals of the two sub-assembly systems.
2. The tractor bidirectional control electrohydraulic suspension system of claim 1, wherein said lifter assembly includes a lifter housing, and two sub-assembly systems in the lifter housing are identical in structure and include a hydraulic drive system and a lifter rotating arm coupled to the hydraulic drive system and driven by the hydraulic drive system to rotate counterclockwise or clockwise.
3. The tractor bidirectional control electrohydraulic suspension system of claim 1, wherein the hydraulic drive system includes a lifter drive motor and a lifter angle sensor coupled to the lifter drive motor, an output shaft of the lifter drive motor is connected to a lifter worm through a lifter connecting sleeve, the lifter worm wheel is engaged with the lifter worm, the lifter rotating arm is fixed to a lifter connecting shaft of the lifter worm wheel, and the drive motor drives the lifter worm to drive the lifter worm wheel to rotate so as to rotate the lifter rotating arm to ascend or descend.
4. The tractor bi-directional control electro-hydraulic suspension system of claim 1, wherein the riser connection sleeve is disposed on the riser connection shaft.
5. The tractor bidirectional control electrohydraulic suspension system of claim 1, wherein the electronic control system is linked with a lifter angle sensor of the hydraulic drive system and is simultaneously connected with the first proportional solenoid valve and the second proportional solenoid valve, receives a feedback signal of the lifter angle sensor and controls the opening and closing degree of the proportional solenoid valve according to the feedback signal so as to control the supply amount of the hydraulic oil.
6. The tractor bidirectional control electro-hydraulic suspension system as claimed in claim 1, wherein inlet ends of the first proportional solenoid valve and the second proportional solenoid valve are communicated with a hydraulic oil tank through a duplicate gear pump; the outlet ends are respectively communicated with the lifter driving motors in the two hydraulic driving systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011429155.9A CN112470586A (en) | 2020-12-07 | 2020-12-07 | Bidirectional control electro-hydraulic suspension system of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011429155.9A CN112470586A (en) | 2020-12-07 | 2020-12-07 | Bidirectional control electro-hydraulic suspension system of tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112470586A true CN112470586A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011429155.9A Pending CN112470586A (en) | 2020-12-07 | 2020-12-07 | Bidirectional control electro-hydraulic suspension system of tractor |
Country Status (1)
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| CN (1) | CN112470586A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2708613Y (en) * | 2004-04-27 | 2005-07-13 | 胡振海 | Four-wheel tractor lifter unit assembly and four-wheel tractor |
| CN201869533U (en) * | 2010-10-20 | 2011-06-22 | 山东常林机械集团股份有限公司 | Ploughing depth control device of wheeled tractor |
| CN104541636A (en) * | 2014-12-30 | 2015-04-29 | 江苏大学 | Electric control method and electric control device for adjustment of hydraulic suspension position of tractor |
| CN204845562U (en) * | 2015-08-24 | 2015-12-09 | 洛阳映山红拖拉机有限公司 | Tractor lifting mechanism and power shaft intelligence protection control system |
| CN206759978U (en) * | 2017-05-04 | 2017-12-19 | 浙拖奔野（宁波）拖拉机制造有限公司 | A kind of tractor of the lifting device with high-precision control hoisting depth |
| CN211449240U (en) * | 2019-11-30 | 2020-09-08 | 湖南宝田重工股份有限公司 | Bidirectional control electro-hydraulic suspension for tractor |
| US10851816B1 (en) * | 2014-08-19 | 2020-12-01 | ClearMotion, Inc. | Apparatus and method for active vehicle suspension |
-
2020
- 2020-12-07 CN CN202011429155.9A patent/CN112470586A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2708613Y (en) * | 2004-04-27 | 2005-07-13 | 胡振海 | Four-wheel tractor lifter unit assembly and four-wheel tractor |
| CN201869533U (en) * | 2010-10-20 | 2011-06-22 | 山东常林机械集团股份有限公司 | Ploughing depth control device of wheeled tractor |
| US10851816B1 (en) * | 2014-08-19 | 2020-12-01 | ClearMotion, Inc. | Apparatus and method for active vehicle suspension |
| CN104541636A (en) * | 2014-12-30 | 2015-04-29 | 江苏大学 | Electric control method and electric control device for adjustment of hydraulic suspension position of tractor |
| CN204845562U (en) * | 2015-08-24 | 2015-12-09 | 洛阳映山红拖拉机有限公司 | Tractor lifting mechanism and power shaft intelligence protection control system |
| CN206759978U (en) * | 2017-05-04 | 2017-12-19 | 浙拖奔野（宁波）拖拉机制造有限公司 | A kind of tractor of the lifting device with high-precision control hoisting depth |
| CN211449240U (en) * | 2019-11-30 | 2020-09-08 | 湖南宝田重工股份有限公司 | Bidirectional control electro-hydraulic suspension for tractor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210312 |