CN204458608U - A kind of used with tractor zero leakage multi-way valve - Google Patents
A kind of used with tractor zero leakage multi-way valve Download PDFInfo
- Publication number
- CN204458608U CN204458608U CN201520055942.XU CN201520055942U CN204458608U CN 204458608 U CN204458608 U CN 204458608U CN 201520055942 U CN201520055942 U CN 201520055942U CN 204458608 U CN204458608 U CN 204458608U
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- valve
- way valve
- rod
- valve body
- way
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Abstract
A kind of used with tractor zero leakage multi-way valve, comprising: valve body, valve rod, push rod, lining, one-way valve cone valve, one-way valve; Valve rod is arranged in valve body internal upper part valve opening, and push rod abuts against in the groove of valve rod by pilot hole in valve body, and lining is pressed in valve body; The one-way valve cone valve being set with check valve spring, packing ring and back-up ring is pressed on lining by valve body conical surface end, and the other end holds out against in the packing ring of pilot hole upper end in valve body by check valve spring pretightening force; One-way valve is arranged in the middle part of valve body, by left oil duct and right oil duct and valve rod UNICOM.Valve rod left part is set with valve rod return spring; One-way valve cone valve endoporus is provided with steel ball and little spring.This multi-way valve compact structure, connection and reasonable arrangement, under the prerequisite meeting hydraulic pressure output valve block normal function, one-way valve is controlled by built-in machines, when will be in meta, hydraulic pressure exports valve block internal leakage and drops to minimum, meets the various working condition requirements that the working attachment hydraulic pressure such as hydraulic pressure lift, hydraulic pressure output exports valve block.
Description
Technical field
The utility model belongs to tractor field, relates to a kind of valve, particularly relates to a kind of used with tractor zero leakage multi-way valve.
Background technique
At present, on the various model wheeled tractors produced at home, the hydraulic pressure output in hydraulic system is all indispensable.The plate valve that some hydraulic systems even directly adopt hydraulic pressure to export is used for hydraulic lift(ing) cylinder, so just valve block is exported to hydraulic pressure and propose higher requirement: it must ensure that hydraulic pressure exports the meta sealing of valve block well, and the farm implements that tractor so just can be made to mate in transportation process or when transition are unlikely to hurtle down.In the output application of other hydraulic system, the meta sealability quality of hydraulic pressure delivery valve also affects the upset of such as pivot plow and the operation etc. of hydraulic pressure sowing machine; But existing domestic hydraulic pressure delivery valve meta sealing all relies on the clearance seal at guiding valve and valve road junction, because the restriction of its structure cannot ensure meta leakage rate, also just cannot meet the requirement that user exports hydraulic pressure.Therefore, under the condition not changing hydraulic system function, export in valve block at existing hydraulic pressure and increase mechanically controlled type one-way valve, significant improvement is carried out to prior art, when both ensure that hydraulic pressure delivery valve meta sealing meta, hydraulic pressure exported the zero leakage of valve block, additionally reduce the power loss of hydraulic system, and then improve the reliability of hydraulic system, this is the result that manufacturer and user expect jointly.
Model utility content
The purpose of this utility model is to provide a kind of compact structure, uses used with tractor zero leakage multi-way valve that is reliable, handiness, by the reasonable Arrangement of push rod, steel ball, spring and cone valve in delivery valve housing, internal leakage during tractor hydraulic output valve block meta can be reduced, reach pressurize and meta and the functional requirement such as accurately to locate, and meet other functional requirement that hydraulic pressure exports simultaneously.
The utility model can achieve the above object by the following technical programs: a kind of used with tractor zero leakage multi-way valve, comprising: valve body, valve rod, push rod, lining, one-way valve cone valve, one-way valve; Valve rod is arranged in valve body internal upper part valve opening, and push rod abuts against in the groove of valve rod by pilot hole in valve body, and lining is pressed in valve body; The one-way valve cone valve being set with check valve spring, packing ring and back-up ring is pressed on lining by valve body conical surface end, and the other end holds out against in the packing ring of pilot hole upper end in valve body by check valve spring pretightening force; One-way valve is arranged in the middle part of valve body, by left oil duct and right oil duct and valve rod UNICOM.
Valve rod left part is set with valve rod return spring;
By being threaded into screw plug on one-way valve cone valve, one-way valve cone valve endoporus is provided with steel ball and little spring.
The utility model can reach following beneficial effect after adopting technique scheme: this multi-way valve compact structure, connection and reasonable arrangement, under the precondition meeting hydraulic pressure output valve block normal function, one-way valve is controlled by built-in machines, the internal leakage that hydraulic pressure when being in meta exports valve block is dropped to minimum, meets the various working condition requirements that the working attachment hydraulic pressure such as hydraulic pressure lift, hydraulic pressure output exports valve block.
Accompanying drawing explanation
Fig. 1 is the structural profile schematic diagram of a kind of used with tractor zero leakage of the utility model multi-way valve;
Fig. 2 is the structural profile schematic diagram of a kind of used with tractor zero leakage of the utility model multi-way valve raised position;
Fig. 3 is the structural profile schematic diagram of a kind of used with tractor zero leakage multi-way valve of the utility model neutral position;
Fig. 4 is the structural profile schematic diagram of a kind of used with tractor zero leakage of the utility model multi-way valve lowering position;
Fig. 5 is the structural profile schematic diagram of a kind of used with tractor zero leakage multi-way valve of the utility model floating position.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.As shown in Fig. 1 ~ 5, a kind of used with tractor zero leakage multi-way valve, mainly comprises: valve body 1, valve rod 2, push rod 3, lining 4, one-way valve cone valve 5, check valve spring 6, packing ring 7, back-up ring 8, steel ball 9, little spring 10, screw plug 11, valve rod return spring 12, one-way valve 13; Its main hydraulic layout is as follows: valve rod 2 is arranged in valve body 1 internal upper part valve opening, and is positioned at neutral position by the valve rod return spring 12 be sleeved on valve rod 2; Push rod 3 by pilot hole in valve body 1 near in valve rod 2 groove; Lining 4 is pressed in valve body 1; The conical surface end of one-way valve cone valve 5 is pressed on lining 4, and the other end holds out against in valve body 1 in pilot hole upper end packing ring 7 by check valve spring 6 pretightening force, and back-up ring 8 is fixed on pilot hole upper end in valve body 1; Steel ball 9 by being threaded into one-way valve cone valve 5, and withstands on one-way valve cone valve 5 endoporus by the pretightening force of little spring 10 by screw plug 11; One-way valve 13 is arranged in the middle part of valve body 1, by left oil duct C and right oil duct D and valve rod 2 UNICOM.
When hydraulic pressure delivery valve is in raised position, valve rod 2 is pulled outwardly, as shown in Figure 2 position, and oil pump carrys out oil content two-way to valve body 1: road to guiding valve oil duct E, and a road is to main oil gallery F; The oil entering guiding valve oil duct E is shut by valve rod 2, cannot enter next chamber; The oil entering main oil gallery F is pushed one-way valve 13 open and is entered left oil duct C in valve body 1 and right oil duct D; Promote the movement of chamber H due to valve rod 2, drive push rod 3 moves and pushes one-way valve cone valve 5 open; The oil entering left oil duct C to be entered with the ring shaped oil passage of valve body 1 by valve rod 2 and promotes chamber H, and enters oil cylinder by the side oil duct of one-way valve cone valve 5 from the outlet of lifting chamber H; The oil simultaneously entering right oil duct D is shut by valve rod 2 and valve body 1; The oil of decline chamber G and left oil back chamber A, right oil back chamber B UNICOM; Another chamber of oil cylinder is by the G oil return of decline chamber.
When hydraulic pressure delivery valve is in neutral position, valve rod 2 is in neutrality, as shown in Figure 3 position, and oil pump carrys out oil content two-way to valve body 1: road to guiding valve oil duct E, and a road is to main oil gallery F; The oil entering guiding valve oil duct E directly enters next chamber; The oil entering main oil gallery F cannot overcome one-way valve 13 spring force, no longer enters the left oil duct C in valve body 1 and right oil duct D; Promote chamber H and return meta due to valve rod 2, the effect that one-way valve cone valve 5 is promoting chamber H epicoele oil pressure presses down on tangible lining 4; Because push rod 3 falls into the bottom land of valve rod 2, make to produce gap between push rod 3 and steel ball 9, the oil duct between steel ball 9 and one-way valve cone valve 5 also shut by steel ball 9 under lifting chamber H epicoele oil pressure and little spring 10 act on; Promote chamber H epicoele oil pressure larger, seal tighter, lifting chamber H epicoele is oily just cannot leak, zero leakage requirement when meeting hydraulic pressure output valve block neutral position; Decline chamber G oil duct and left oil back chamber A, right oil back chamber B are completely cut off by the sealing between valve rod 2 and valve body 1 simultaneously.
When hydraulic pressure delivery valve is in lowering position, valve rod 2 inwardly pushes away, as shown in Figure 4 position: oil pump carrys out oil content two-way to valve body 1: road to guiding valve oil duct E, and a road is to main oil gallery F; The oil entering guiding valve oil duct E is shut by valve rod 2, cannot enter next chamber; The oil entering main oil gallery F is pushed one-way valve 13 open and is entered left oil duct C in valve body 1 and right oil duct D; The high pressure oil promoting chamber H is shut by one-way valve cone valve 5 originally; Due to the movement of valve rod 2, drive on push rod 3 and move, first push steel ball 9 in one-way valve cone valve 5 open, make steel ball 9 and one-way valve cone valve 5 produce gap; The oil promoting chamber H enters one-way valve cone valve 5 cavity of resorption by this gap, with one-way valve cone valve 5 epicoele oil pressure balance; Only need the spring force overcoming one-way valve cone valve 5 internal check valve spring 6 when now valve rod 2 continues mobile, this power is very little; Like this along with valve rod 2 continues mobile, the oil duct of lifting chamber H and left oil back chamber A, right oil back chamber B is opened, and the fluid promoting chamber H flows back to fuel tank; The oil duct of decline chamber G and left oil back chamber A, right oil back chamber B is sealed by valve rod 2 and valve body 1 simultaneously; Oil pump carrys out the oily oil duct by right oil duct and decline chamber G and enters decline chamber G.
When hydraulic pressure delivery valve is in floating position, valve rod 2 continues inwardly to be pushed into floating position, and as shown in Figure 5, oil pump carrys out oil content two-way to valve body 1: road to guiding valve oil duct E, and a road is to main oil gallery F; The oil entering guiding valve oil duct E directly enters next chamber; The oil entering main oil gallery F cannot overcome one-way valve 13 spring force, no longer enters the left oil duct C in valve body 1 and right oil duct D; Promote chamber H inner valve stem 2 to continue to be moved to the left, one-way valve cone valve 5 is pushed into position shown in Fig. 5 by push rod 4; The oil and left oil back chamber A, the right oil back chamber B that promote chamber H link up; The oil of decline chamber G is also linked up with left oil back chamber A, right oil back chamber B; Oil cylinder is in floating position.
Whole system not only ensure that the normal work of hydraulic system, also ensure that the zero leakage of hydraulic pressure delivery valve when meta simultaneously, ensure that the accuracy that hydraulic pressure delivery valve meta is located.
Claims (3)
1. a used with tractor zero leakage multi-way valve, comprising: valve body (1), valve rod (2), push rod (3), lining (4), one-way valve cone valve (5), one-way valve (13); It is characterized in that: valve rod (2) is arranged in valve body (1) internal upper part valve opening, and push rod (3) abuts against in the groove of valve rod (2) by valve body (1) interior pilot hole, lining (4) is pressed in valve body (1); Be set with check valve spring (6), packing ring (7) is pressed on lining (4) with the one-way valve cone valve (5) of back-up ring (8) by valve body (1) conical surface end, the other end holds out against in the packing ring (7) of pilot hole upper end in valve body (1) by check valve spring (6) pretightening force; One-way valve (13) is arranged on valve body (1) middle part, by left oil duct (C) and right oil duct (D) and valve rod (2) UNICOM.
2. a kind of used with tractor zero leakage multi-way valve according to claim 1, is characterized in that: valve rod (2) left part is set with valve rod return spring (12).
3. a kind of used with tractor zero leakage multi-way valve according to claim 1, it is characterized in that: by being threaded into screw plug (11) on one-way valve cone valve (5), one-way valve cone valve (5) endoporus is provided with steel ball (9) and little spring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520055942.XU CN204458608U (en) | 2015-01-27 | 2015-01-27 | A kind of used with tractor zero leakage multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520055942.XU CN204458608U (en) | 2015-01-27 | 2015-01-27 | A kind of used with tractor zero leakage multi-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458608U true CN204458608U (en) | 2015-07-08 |
Family
ID=53665502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520055942.XU Withdrawn - After Issue CN204458608U (en) | 2015-01-27 | 2015-01-27 | A kind of used with tractor zero leakage multi-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204458608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564888A (en) * | 2015-01-27 | 2015-04-29 | 第一拖拉机股份有限公司 | Zero-leakage multi-way valve for tractors |
-
2015
- 2015-01-27 CN CN201520055942.XU patent/CN204458608U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564888A (en) * | 2015-01-27 | 2015-04-29 | 第一拖拉机股份有限公司 | Zero-leakage multi-way valve for tractors |
| CN104564888B (en) * | 2015-01-27 | 2016-09-07 | 第一拖拉机股份有限公司 | A kind of used with tractor zero leakage banked direction control valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |