CN104047972B - Pressure control valve of wheeled tractor - Google Patents
Pressure control valve of wheeled tractor Download PDFInfo
- Publication number
- CN104047972B CN104047972B CN201410273676.8A CN201410273676A CN104047972B CN 104047972 B CN104047972 B CN 104047972B CN 201410273676 A CN201410273676 A CN 201410273676A CN 104047972 B CN104047972 B CN 104047972B
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- Prior art keywords
- control
- pressure
- valve
- control valve
- valve element
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
A pressure control valve of a wheeled tractor comprises a control valve shell, a clutch electromagnetic valve, a control pressure valve element, a control pressure spring, a control pressure regulator, a lubricating pressure spring and a lubricating pressure valve element. Three cavities are formed in the control valve shell from left to right, and the cavities are communicated with one another through oil ducts. The clutch electromagnetic valve is directly installed in the leftmost cavity of the control valve shell, the control pressure valve element is installed in the middle cavity of the control valve shell, the control pressure spring is installed above the control pressure valve element and compressed in the middle cavity of the control valve shell by the control pressure regulator, the lubricating pressure valve element is installed in the right cavity of the control valve shell, and the lubricating pressure spring is installed above the lubricating pressure valve element in a compressed mode. The pressure control valve of the wheeled tractor is rigorous and deliberate in structure, a pressure-control-valve control structure of a hydraulic system of the tractor is simplified, and the reliability and compactness degree of a transmission system of the tractor are improved.
Description
Technical field
The invention belongs to tractor field, it is related to a kind of tractor control valve, more particularly, to a kind of wheeled tractor pressure
Control valve.
Background technology
At present, at home, on the large power wheel tractor of various models of outer production, wet clutch in power train
Control pressure is all produced by control valve.The pressure that pressure-control valve of the prior art produces persistently can form pressure chamber,
The stablizing of holding system control pressure, but initial start-up tractor or tractor through long-term place need to restart when, all
Needs carry out venting process, otherwise easily damage pump.
Content of the invention
It is an object of the invention to provide a kind of compact conformation, starting first using reliable, in tractor or put for a long time
Put and the wheeled tractor pressure-control valve that pipeline is exhausted when restarting, need not be taken apart.
The present invention reaches above-mentioned purpose: wheeled tractor pressure-control valve by the following technical programs, comprising: control valve casing
Body, clutch solenoid valve, control pressure valve element, control pressure spring, control pressure actuator, lubrication pressure spring, lubrication pressure
Power valve element；It is characterized in that: control in valve chest and three cavitys are set from left to right, each chamber is communicated by oil duct；Clutch electricity
Magnet valve is directly installed on control valve chest leftmost side intracavity, and control pressure valve element is arranged in control valve chest intermediate cavity, controls
Compression spring is arranged on above control pressure valve element, and is compressed in control valve chest intermediate cavity by control pressure actuator, profit
Slide pressing force valve element is arranged in control valve chest right-side cavity, and lubrication pressure spring is arranged on and is compressed above lubrication pressure valve element.
The present invention is using can reach following beneficial effect: clutch solenoid valve, control pressure valve after technique scheme
Core, lubrication pressure valve element are all installed concentratedly in control valve chest, compact conformation.Control pressure oil enters and controls in valve chest,
Can via control pressure valve element and lubrication pressure valve element aerofluxuss, it is to avoid tractor starts first or places for a long time and again opens
Have to when dynamic to take pipeline apart and be exhausted work, decrease workload, and ensure that the dependability of tractor.Control pressure
Draught control mechanism can be used to adjust control pressure, and clutch solenoid valve can control whether to provide pressure to clutch.The system is tied
Structure is rigorous, careful, simplifies tractor hydraulic system control pressure and controls valve arrangement, improves the reliability of Tractor Power Train
And compactness.
Brief description
Fig. 1 is the structural representation of wheeled tractor pressure-control valve of the present invention.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.As shown in figure 1, wheeled tractor pressure-control valve, bag
Include: control valve chest 1, clutch solenoid valve 2, control pressure valve element 3, control pressure spring 4, control pressure actuator 5, lubrication
Compression spring 6, lubrication pressure valve element 7；Control in valve chest 1 and three cavitys are set from left to right, each chamber is communicated by oil duct；From
Clutch electromagnetic valve 2 is directly installed on control valve chest 1 leftmost side intracavity, and control pressure valve element 3 is arranged in the middle of control valve chest 1
Intracavity, control pressure spring 4 is arranged on above control pressure valve element 3, and is compressed in control valve chest by control pressure actuator 5
1 middle intracavity, lubrication pressure valve element 7 is arranged on control valve chest 1 right side intracavity, and lubrication pressure spring 6 is arranged on lubrication pressure
Compressed above valve element 7, the fluid between each parts is communicated by controlling the casting oil duct in valve chest 1.
When power train starts running, fluid mixed gas enter wheeled tractor pressure-control valve, and controlling, valve chest 1 is left
In side chamber, gas passes through control pressure valve element 3 after being compressed, then passes through lubrication pressure valve via controlling valve chest 1 to cast oil duct
Core 7 enters power train lubricating system and discharges, and fluid promotes control pressure valve element 3 compression control compression spring 4 after gas discharge
Reach control system desirable pressure, and enter right side intracavity by controlling valve chest 1 to cast oil duct, fluid promotes lubrication pressure valve
Core 7, compresses lubrication pressure spring 6, makes control valve chest 1 right side cavity pressure reach lubricating system desirable pressure, unnecessary fluid
Power train is returned to by lubrication pressure valve element 7.Spin Control pressure regulator 5 can will control valve chest 1 left side cavity pressure to adjust
Whole to control system desirable pressure.
When needing clutch operating, start clutch solenoid valve 2, control valve chest 1 left side cavity inner fluid to enter clutch
Device, and set up clutch pressure.When needing cut-off clutch, close clutch solenoid valve 2, in clutch, pressure oil passes through control
Casting oil duct in valve chest 1 top processed is discharged.
The invention provides a kind of wheeled tractor pressure-control valve, compact conformation, assembling be simple, using reliable, passes through
This wheeled tractor pressure-control valve, when wheeled tractor completes to assemble offline startup, will enter without taking fluid pressure line again apart
Row aerofluxuss, do not use for a long time in wheeled tractor, it is not required that being exhausted work when being again started up, further increase wheel
The reliability of formula Tractor Products, it is to avoid the accident of controlling pump is burnt.
Claims (1)
1. wheeled tractor pressure-control valve, comprising: control valve chest (1), clutch solenoid valve (2), control pressure valve element
(3), control pressure spring (4), control pressure actuator (5), lubrication pressure spring (6), lubrication pressure valve element (7)；Its feature
It is: control in valve chest (1) and three cavitys are set from left to right, each chamber is communicated by oil duct；Clutch solenoid valve (2) is directly
It is arranged on control valve chest (1) leftmost side intracavity, control pressure valve element (3) is arranged on intracavity in the middle of control valve chest (1), controls
Compression spring (4) is arranged on above control pressure valve element (3), and is compressed in control valve chest (1) by control pressure actuator (5)
Middle intracavity, lubrication pressure valve element (7) is arranged on intracavity on the right side of control valve chest (1), and lubrication pressure spring (6) is arranged on lubrication
Pressure valve core is compressed above (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273676.8A CN104047972B (en) | 2014-06-19 | 2014-06-19 | Pressure control valve of wheeled tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273676.8A CN104047972B (en) | 2014-06-19 | 2014-06-19 | Pressure control valve of wheeled tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104047972A CN104047972A (en) | 2014-09-17 |
| CN104047972B true CN104047972B (en) | 2017-01-18 |
Family
ID=51501231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410273676.8A Active CN104047972B (en) | 2014-06-19 | 2014-06-19 | Pressure control valve of wheeled tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104047972B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3765454A (en) * | 1973-02-01 | 1973-10-16 | Allis Chalmers | Pressure graduated control valve |
| DE102007017177A1 (en) * | 2007-04-12 | 2008-10-16 | Zf Friedrichshafen Ag | Hydraulic control device for powershift transmission with a device for shortening the switching times |
| JP4979556B2 (en) * | 2007-12-04 | 2012-07-18 | ヤンマー株式会社 | Hydraulic control device for marine speed reducer |
| CN202048037U (en) * | 2011-03-18 | 2011-11-23 | 常州联发凯迪机械有限公司 | Hydraulic distributor of wheeled tractor |
| CN203335507U (en) * | 2013-06-21 | 2013-12-11 | 合肥力威汽车油泵有限公司 | Electromagnetism and fluid power combination control valve |
| CN203962782U (en) * | 2014-06-19 | 2014-11-26 | 第一拖拉机股份有限公司 | Wheeled tractor pressure controlled valve |
-
2014
- 2014-06-19 CN CN201410273676.8A patent/CN104047972B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104047972A (en) | 2014-09-17 |
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