CN104564888B - A kind of used with tractor zero leakage banked direction control valves - Google Patents
A kind of used with tractor zero leakage banked direction control valves Download PDFInfo
- Publication number
- CN104564888B CN104564888B CN201510040310.0A CN201510040310A CN104564888B CN 104564888 B CN104564888 B CN 104564888B CN 201510040310 A CN201510040310 A CN 201510040310A CN 104564888 B CN104564888 B CN 104564888B
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- Prior art keywords
- valve
- rod
- valve body
- hydraulic pressure
- check valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Check Valves (AREA)
Abstract
A kind of used with tractor zero leakage banked direction control valves, including: valve body, valve rod, push rod, lining, check valve cone valve, check valve；Valve rod is arranged in valve body internal upper part valve opening, and push rod is abutted against in the groove of valve rod by pilot hole in valve body, and lining is pressed in valve body；Be set with one-way valve spring, the check valve cone valve of packing ring and back-up ring is pressed on lining by valve body conical surface end, and the other end holds out against in valve body in the packing ring of pilot hole upper end by one-way valve spring pretightning force；Check 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；Check valve cone valve endoporus is provided with steel ball and little spring.This banked direction control valves compact conformation, connection and reasonable arrangement, on the premise of meeting hydraulic pressure output valve block normal function, check valve is controlled by built-in machines, when will be in middle position, hydraulic pressure output valve block internal leakage is preferably minimized, and meets the various working condition requirements of the working attachment hydraulic pressure such as hydraulic pressure lift, hydraulic pressure output output valve block.
Description
Technical field
The invention belongs to tractor field, relate to a kind of valve, particularly relate to a kind of used with tractor zero leakage banked direction control valves.
Background technology
At present, on the various model wheeled tractors produced at home, the hydraulic pressure output part in hydraulic system all can not
Or lack.The plate valve that some hydraulic systems the most directly use hydraulic pressure to export is used for hydraulic lift(ing) cylinder, thus defeated to hydraulic pressure
Go out valve block and propose higher requirement: it must assure that the middle position sealing of hydraulic pressure output valve block is good, the most just can make to drag
The farm implements that machine drawing is mated in transportation or when transition will not hurtle down.Output in other hydraulic system
In application, the middle position sealing property quality of hydraulic pressure delivery valve also contributes to upset and the fortune of hydraulic pressure seeder of such as pivot plow
Row etc.；But in existing domestic hydraulic pressure delivery valve, position seals the clearance seal relying on guiding valve with valve road junction, due to the limit of its structure
System cannot ensure in position leakage rate, the most just cannot meet the requirement that hydraulic pressure is exported by user.Therefore, hydraulic system merit is not being changed
Under conditions of energy, in existing hydraulic pressure output valve block, increase mechanically controlled type check valve, prior art is carried out significant improvement, both
The zero leakage of hydraulic pressure output valve block when ensure that position during position seals in hydraulic pressure delivery valve, the power decreasing again hydraulic system damages
Lose, and then improve the reliability of hydraulic system, the result that this is manufacturer and user expects jointly.
Summary of the invention
It is an object of the invention to provide a kind of compact conformation, use used with tractor zero leakage reliable, handiness many
Road valve, by the reasonable Arrangement of push rod, steel ball, spring and cone valve in delivery valve housing, it is possible to decrease tractor hydraulic delivery valve
Internal leakage during position in sheet, reaches pressurize and middle position such as is accurately positioned at the functional requirement, and meets hydraulic pressure output other simultaneously
Functional requirement.
The present invention can reach above-mentioned purpose by the following technical programs: a kind of used with tractor zero leakage banked direction control valves, bag
Include: valve body, valve rod, push rod, lining, check valve cone valve, check valve；Valve rod is arranged in valve body internal upper part valve opening, and push rod passes through
In in valve body, pilot hole abuts against the groove of valve rod, lining is pressed in valve body；It is set with one-way valve spring, packing ring and back-up ring
Check valve cone valve is pressed on lining by valve body conical surface end, and the other end is held out against by one-way valve spring pretightning force and leads in valve body
In the packing ring of upper end, hole；Check 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；
Being threaded into screw plug on check valve cone valve, check valve cone valve endoporus is provided with steel ball and little spring.
The present invention can reach following beneficial effect after using technique scheme: this banked direction control valves compact conformation, layout is closed
Reason, under the precondition meeting hydraulic pressure output valve block normal function, controls check valve by built-in machines, when will be in middle position
The internal leakage of hydraulic pressure output valve block is preferably minimized, and meets the working attachment hydraulic pressure delivery valve such as hydraulic pressure lift, hydraulic pressure output
The various working condition requirements of sheet.
Accompanying drawing explanation
Fig. 1 is the structural profile schematic diagram of the present invention a kind of used with tractor zero leakage banked direction control valves；
Fig. 2 is the structural profile schematic diagram of the present invention a kind of used with tractor zero leakage banked direction control valves raised position；
Fig. 3 is the structural profile schematic diagram of the present invention a kind of used with tractor zero leakage banked direction control valves neutral position；
Fig. 4 is the structural profile schematic diagram of the present invention a kind of used with tractor zero leakage banked direction control valves down position；
Fig. 5 is the structural profile schematic diagram of the present invention a kind of used with tractor zero leakage banked direction control valves floating position.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.As shown in Fig. 1～5, a kind of used with tractor zero leakage is many
Road valve, specifically includes that valve body 1, valve rod 2, push rod 3, lining 4, check valve cone valve 5, one-way valve spring 6, packing ring 7, back-up ring 8, steel
Ball 9, little spring 10, screw plug 11, valve rod return spring 12, check valve 13；Its main hydraulic layout is as follows: valve rod 2 is arranged
In valve body 1 internal upper part valve opening, and the valve rod return spring 12 by being sleeved on valve rod 2 is positioned at neutral position；Push rod 3 passes through
In valve body 1, pilot hole is in valve rod 2 groove；Lining 4 is pressed in valve body 1；The conical surface end of check valve cone valve 5 is pressed on lining
On 4, the other end is held out against in valve body 1 in pilot hole upper end packing ring 7 by one-way valve spring 6 pretightning force, and back-up ring 8 is fixed on valve body
Pilot hole upper end in 1；Screw plug 11 is threaded into check valve cone valve 5, and is withstood on by steel ball 9 by the pretightning force of little spring 10
On check valve cone valve 5 endoporus；Check 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 oily point of two-way extremely
Valve body 1: one road is to guiding valve oil duct E, a road to main oil gallery F；The oil entering guiding valve oil duct E is shut by valve rod 2, it is impossible to enter next
Chamber；Left oil duct C and the right oil duct D that check valve 13 enters in valve body 1 pushed open by the oil entering main oil gallery F；Promote chamber H due to valve rod 2
Movement, drive to move on push rod 3 and push check valve cone valve 5 open；Enter the oil ring shaped oil passage by valve rod 2 with valve body 1 of left oil duct C
Enter and promote chamber H, and enter oil cylinder by the side oil duct of check valve cone valve 5 from the outlet promoting chamber H；Simultaneously enter right oil duct
The oil of D is shut with valve body 1 by valve rod 2；Decline the oily and left oil back chamber A of chamber G, right oil back chamber B UNICOM；Under another chamber of oil cylinder is passed through
Fall chamber G oil return.
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 oily point of two-way
To valve body 1: road to guiding valve oil duct E, a road to main oil gallery F；The oil entering guiding valve oil duct E is directly entered next chamber；Enter main
The oil of oil duct F cannot overcome check valve 13 spring force, does not enter back into left oil duct C and the right oil duct D in valve body 1；Promote chamber H due to
Position in valve rod 2 recurrence, check valve cone valve 5 is compacted on lining 4 under the effect promoting chamber H epicoele oil pressure；Owing to push rod 3 falls into
The bottom land of valve rod 2 so that produce gap between push rod 3 and steel ball 9, steel ball 9 is also made at lifting chamber H epicoele oil pressure and little spring 10
The oil duct between steel ball 9 and check valve cone valve 5 is shut under with；Promote chamber H epicoele oil pressure the biggest, seal the tightest, promote on the H of chamber
Chamber oil just cannot leak, zero leakage requirement when meeting hydraulic pressure output valve block neutral position；Decline chamber G oil duct and left oil return simultaneously
Chamber A, right oil back chamber B are completely cut off by the sealing between valve rod 2 and valve body 1.
When hydraulic pressure delivery valve is in down position, valve rod 2 inwardly pushes away, as shown in Figure 4 position: oil pump carrys out oily point of two-way extremely
Valve body 1: one road is to guiding valve oil duct E, a road to main oil gallery F；The oil entering guiding valve oil duct E is shut by valve rod 2, it is impossible to enter next
Chamber；Left oil duct C and the right oil duct D that check valve 13 enters in valve body 1 pushed open by the oil entering main oil gallery F；The hydraulic oil promoting chamber H is former
This is shut by check valve cone valve 5；Due to the movement of valve rod 2, drive and move on push rod 3, first push steel ball 9 in check valve cone valve 5 open,
Steel ball 9 and check valve cone valve 5 is made to produce gap；The oil promoting chamber H enters check valve cone valve 5 cavity of resorption by this gap, with list
To valve cone valve 5 epicoele oil pressure balance；Now valve rod 2 needs only to when continuing to move to overcome check valve cone valve 5 internal check valve spring 6
Spring force, this power is the least；So continue to move to along with valve rod 2, promote chamber H and left oil back chamber A, the oil of right oil back chamber B
Road is opened, and the fluid promoting chamber H flows back to fuel tank；Decline simultaneously chamber G and left oil back chamber A, right oil back chamber B oil duct by valve rod 2 with
Valve body 1 seals；Oil pump is carried out oily entrance with the oil duct declining chamber G by right oil duct and declines chamber G.
When hydraulic pressure delivery valve is in floating position, valve rod 2 continues inwardly to be pushed into floating position, as it is shown in figure 5, oil pump comes
Oil point two-way is to valve body 1: road to guiding valve oil duct E, a road to main oil gallery F；The oil entering guiding valve oil duct E is directly entered next chamber；
The oil entering main oil gallery F cannot overcome check valve 13 spring force, does not enter back into left oil duct C and the right oil duct D in valve body 1；Promote
Chamber H inner valve stem 2 continues to be moved to the left, and check valve cone valve 5 is pushed into position shown in Fig. 5 by push rod 4；Promote the oily and left oil return of chamber H
Chamber A, right oil back chamber B link up；The oil declining 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 hydraulic pressure delivery valve is when middle position simultaneously
Zero leakage, it is ensured that the accuracy of location, position in hydraulic pressure delivery valve.
Claims (3)
1. a used with tractor zero leakage banked direction control valves, including: valve body (1), valve rod (2), push rod (3), lining (4), unidirectional valve cone
Valve (5), check 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) passes through valve body
(1), in interior pilot hole abuts against the groove of valve rod (2), lining (4) is pressed in valve body (1)；Be set with one-way valve spring (6),
Packing ring (7) is pressed on lining (4) by valve body (1) conical surface end with the check valve cone valve (5) of back-up ring (8), and the other end is by single
Hold out against to valve spring (6) pretightning force in the packing ring (7) of pilot hole upper end in valve body (1)；Check 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.
A kind of used with tractor zero leakage banked direction control valves the most according to claim 1, it is characterised in that: valve rod (2) left part is overlapped
Equipped with valve rod return spring (12).
A kind of used with tractor zero leakage banked direction control valves the most according to claim 1, it is characterised in that: on check valve cone valve (5)
Being threaded into screw plug (11), check 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 |
|---|---|---|---|
| CN201510040310.0A CN104564888B (en) | 2015-01-27 | 2015-01-27 | A kind of used with tractor zero leakage banked direction control valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040310.0A CN104564888B (en) | 2015-01-27 | 2015-01-27 | A kind of used with tractor zero leakage banked direction control valves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104564888A CN104564888A (en) | 2015-04-29 |
| CN104564888B true CN104564888B (en) | 2016-09-07 |
Family
ID=53081728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510040310.0A Active CN104564888B (en) | 2015-01-27 | 2015-01-27 | A kind of used with tractor zero leakage banked direction control valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564888B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087248B (en) * | 2021-11-02 | 2022-07-26 | 浙江海宏液压科技股份有限公司 | Reversing valve |
| CN114623121A (en) * | 2022-03-23 | 2022-06-14 | 浙江海宏液压科技股份有限公司 | Electric control multi-way valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3482600A (en) * | 1968-03-04 | 1969-12-09 | Commercial Shearing | Hollow slide valves |
| US4050251A (en) * | 1975-03-04 | 1977-09-27 | Societe Anonyme D.B.A. | Hydraulic booster |
| DE3000260A1 (en) * | 1980-01-05 | 1981-07-09 | Konrad Dipl Ing Meyer | Controller for double acting differential cylinder - has chamber connection which can be cut off by multi-way valve |
| CN2835676Y (en) * | 2005-10-10 | 2006-11-08 | 合肥长源液压件有限责任公司 | Distributor with little leakage when valve rod in middle |
| CN202118022U (en) * | 2011-06-22 | 2012-01-18 | 浙江海宏液压科技股份有限公司 | Integral type multiway valve |
| CN203201894U (en) * | 2013-04-18 | 2013-09-18 | 淮安市三联液压科技有限公司 | Combined-type reversing valve for hydraulic locks |
| CN104179749A (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Hydraulic multi-channel valve for agricultural machine |
| CN204458608U (en) * | 2015-01-27 | 2015-07-08 | 第一拖拉机股份有限公司 | A kind of used with tractor zero leakage multi-way valve |
-
2015
- 2015-01-27 CN CN201510040310.0A patent/CN104564888B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3482600A (en) * | 1968-03-04 | 1969-12-09 | Commercial Shearing | Hollow slide valves |
| US4050251A (en) * | 1975-03-04 | 1977-09-27 | Societe Anonyme D.B.A. | Hydraulic booster |
| DE3000260A1 (en) * | 1980-01-05 | 1981-07-09 | Konrad Dipl Ing Meyer | Controller for double acting differential cylinder - has chamber connection which can be cut off by multi-way valve |
| CN2835676Y (en) * | 2005-10-10 | 2006-11-08 | 合肥长源液压件有限责任公司 | Distributor with little leakage when valve rod in middle |
| CN202118022U (en) * | 2011-06-22 | 2012-01-18 | 浙江海宏液压科技股份有限公司 | Integral type multiway valve |
| CN203201894U (en) * | 2013-04-18 | 2013-09-18 | 淮安市三联液压科技有限公司 | Combined-type reversing valve for hydraulic locks |
| CN104179749A (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Hydraulic multi-channel valve for agricultural machine |
| CN204458608U (en) * | 2015-01-27 | 2015-07-08 | 第一拖拉机股份有限公司 | A kind of used with tractor zero leakage multi-way valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104564888A (en) | 2015-04-29 |
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