CN203962782U - Wheeled tractor pressure controlled valve - Google Patents
Wheeled tractor pressure controlled valve Download PDFInfo
- Publication number
- CN203962782U CN203962782U CN201420326807.XU CN201420326807U CN203962782U CN 203962782 U CN203962782 U CN 203962782U CN 201420326807 U CN201420326807 U CN 201420326807U CN 203962782 U CN203962782 U CN 203962782U
- Authority
- CN
- China
- Prior art keywords
- control valve
- pilot pressure
- valve housing
- lubrication
- spool
- 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.)
- Expired - Lifetime
Links
- 238000005461 lubrication Methods 0.000 claims abstract description 28
- 208000002925 dental caries Diseases 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Wheeled tractor pressure controlled valve, comprising: control valve housing, clutch solenoid valve, pilot pressure spool, pilot pressure spring, pilot pressure regulator, lubrication pressure spring, lubrication pressure spool; Three cavitys are set in control valve housing from left to right, and each chamber communicates by oil duct; Clutch solenoid valve is directly installed in chamber, the control valve housing leftmost side, pilot pressure spool is arranged in control valve housing intermediate cavity, pilot pressure spring fitting is above pilot pressure spool, and be compressed in control valve housing intermediate cavity by pilot pressure regulator, lubrication pressure spool is arranged in control valve housing right-side cavity, and lubrication pressure spring fitting is compressed above lubrication pressure spool.Native system is of a tightly knit structure, careful, has simplified tractor hydraulic system pilot pressure control valve structure, has improved reliability and the compact degree of Tractor Power Train.
Description
Technical field
The utility model belongs to tractor field, relates to a kind of tractor control valve, relates in particular to a kind of wheeled tractor pressure controlled valve.
Background technique
At present, at home, on the large power wheel tractor of the various models of outer production, in power train, the pilot pressure of wet clutch is all produced by control valve.The pressure that pressure controlled valve of the prior art produces can continue mineralization pressure chamber, stablizing of keeping system pilot pressure, but, in the time that long-term placement need to be restarted, all need the processing of exitting, otherwise very easily pump is damaged at initial start-up tractor or tractor.
Model utility content
The purpose of this utility model is to provide a kind of compact structure, it is reliable to use, start first or place for a long time the wheeled tractor pressure controlled valve that needn't take pipeline apart while restarting and carry out exhaust at tractor.
The utility model achieves the above object by the following technical programs: wheeled tractor pressure controlled valve, comprising: control valve housing, clutch solenoid valve, pilot pressure spool, pilot pressure spring, pilot pressure regulator, lubrication pressure spring, lubrication pressure spool; It is characterized in that: three cavitys are set in control valve housing from left to right, and each chamber communicates by oil duct; Clutch solenoid valve is directly installed in chamber, the control valve housing leftmost side, pilot pressure spool is arranged in control valve housing intermediate cavity, pilot pressure spring fitting is above pilot pressure spool, and be compressed in control valve housing intermediate cavity by pilot pressure regulator, lubrication pressure spool is arranged in control valve housing right-side cavity, and lubrication pressure spring fitting is compressed above lubrication pressure spool.
The utility model can reach following beneficial effect after adopting technique scheme: clutch solenoid valve, pilot pressure spool, lubrication pressure spool are all installed concentratedly in control valve housing, compact structure.Pilot pressure oil enters in control valve housing, can be via pilot pressure spool and the exhaust of lubrication pressure spool, avoid tractor to start first or placed for a long time must taking pipeline apart while restarting and carrying out exhaust work, reduced workload, and ensured the operational safety of tractor.Pilot pressure regulator can be used for regulating pilot pressure, and whether clutch solenoid valve can be controlled provides pressure to clutch.Native system is of a tightly knit structure, careful, has simplified tractor hydraulic system pilot pressure control valve structure, has improved reliability and the compact degree of Tractor Power Train.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model wheeled tractor pressure controlled valve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.As shown in Figure 1, wheeled tractor pressure controlled valve, comprising: control valve housing 1, clutch solenoid valve 2, pilot pressure spool 3, pilot pressure spring 4, pilot pressure regulator 5, lubrication pressure spring 6, lubrication pressure spool 7; Three cavitys are set in control valve housing 1 from left to right, and each chamber communicates by oil duct; Clutch solenoid valve 2 is directly installed in control valve housing 1 chamber, the leftmost side, pilot pressure spool 3 is arranged in control valve housing 1 intermediate cavity, pilot pressure spring 4 is arranged on pilot pressure spool 3 tops, and be compressed in control valve housing 1 intermediate cavity by pilot pressure regulator 5, lubrication pressure spool 7 is arranged in control valve housing 1 right-side cavity, it is compressed that lubrication pressure spring 6 is arranged on lubrication pressure spool 7 tops, and the fluid between each component communicates by the casting oil duct in control valve housing 1.
When power train entry into service, fluid mixed gas enters wheeled tractor pressure controlled valve, in control valve housing 1 chamber, left side, after gas is compressed, pass through pilot pressure spool 3, cast oil duct via control valve housing 1 again and enter the discharge of power train lubrication system by lubrication pressure spool 7, fluid promotes pilot pressure spool 3 compression control pressure springs 4 and reaches the required pressure of control system after gas is discharged, and cast oil duct by control valve housing 1 and enter in right-side cavity, fluid promotes lubrication pressure spool 7, compression lubrication pressure spring 6, make control valve housing 1 right side cavity pressure reach the required pressure of lubrication system, unnecessary fluid is got back to power train by lubrication pressure spool 7.Rotation pilot pressure regulator 5 can be adjusted to the required pressure of control system by control valve housing 1 left side cavity pressure.
In the time of needs clutch operating, start clutch solenoid valve 2, control valve housing 1 chamber, left side inner fluid enters clutch, and sets up clutch pressure.In the time of needs cut-off clutch, close clutch solenoid valve 2, clutch internal pressure oil is discharged by control valve housing 1 top casting oil duct.
The utility model provides a kind of wheeled tractor pressure controlled valve, compact structure, assembling be simple, it is reliable to use, by this wheeled tractor pressure controlled valve, wheeled tractor completes assembling and rolls off the production line while startup, need not take hydraulic pipe line apart again and carry out exhaust, does not use for a long time at wheeled tractor, while again startup, do not need to carry out exhaust work, further improved the reliability of wheeled tractor product, avoided the accident of control pump to burn yet.
Claims (1)
1. wheeled tractor pressure controlled valve, comprising: control valve housing (1), clutch solenoid valve (2), pilot pressure spool (3), pilot pressure spring (4), pilot pressure regulator (5), lubrication pressure spring (6), lubrication pressure spool (7); It is characterized in that: three cavitys are set in control valve housing (1) from left to right, and each chamber communicates by oil duct; Clutch solenoid valve (2) is directly installed in control valve housing (1) chamber, the leftmost side, pilot pressure spool (3) is arranged in control valve housing (1) intermediate cavity, pilot pressure spring (4) is arranged on pilot pressure spool (3) top, and be compressed in control valve housing (1) intermediate cavity by pilot pressure regulator (5), lubrication pressure spool (7) is arranged in control valve housing (1) right-side cavity, and it is compressed that lubrication pressure spring (6) is arranged on lubrication pressure spool (7) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420326807.XU CN203962782U (en) | 2014-06-19 | 2014-06-19 | Wheeled tractor pressure controlled valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420326807.XU CN203962782U (en) | 2014-06-19 | 2014-06-19 | Wheeled tractor pressure controlled valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962782U true CN203962782U (en) | 2014-11-26 |
Family
ID=51923369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420326807.XU Expired - Lifetime CN203962782U (en) | 2014-06-19 | 2014-06-19 | Wheeled tractor pressure controlled valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203962782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047972A (en) * | 2014-06-19 | 2014-09-17 | 第一拖拉机股份有限公司 | Pressure control valve of wheeled tractor |
-
2014
- 2014-06-19 CN CN201420326807.XU patent/CN203962782U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047972A (en) * | 2014-06-19 | 2014-09-17 | 第一拖拉机股份有限公司 | Pressure control valve of wheeled tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |