CN106015146A - Built-in hydraulic distributor - Google Patents
Built-in hydraulic distributor Download PDFInfo
- Publication number
- CN106015146A CN106015146A CN201610566333.XA CN201610566333A CN106015146A CN 106015146 A CN106015146 A CN 106015146A CN 201610566333 A CN201610566333 A CN 201610566333A CN 106015146 A CN106015146 A CN 106015146A
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- CN
- China
- Prior art keywords
- valve
- oil
- lowering
- oil return
- opening
- 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.)
- Granted
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Classifications
-
- 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
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a built-in hydraulic distributor which comprises a distributor shell and a main control valve, an oil return valve and a check valve which are arranged in the shell; an oil inlet, an oil cylinder oil inlet and an oil return opening are formed in the distributor shell; a lowering valve is arranged in a main control valve hole; a lowering valve compressing sleeve and a lowering valve adjusting bolt are arranged at the right side of the lowering valve; the lowering valve is arranged at the right side of the main control valve; the oil cylinder oil inlet communicates with the oil inlet chamber of the lowering valve by an oil cylinder oil drainage oil line; the oil outlet chamber of the lowering valve communicates with the oil return opening; the lowering valve comprises a lowering valve core and a lowering valve seat; the lowering valve compressing sleeve compresses the lowering valve seat; and the lowering valve adjusting bolt compresses on the lowering valve compressing sleeve. The built-in hydraulic distributor can improve the lowering and lifting sensitivity, and the hydrostatic sedimentation value of a hydraulic lifter is ensured by the sealing state of the lowering valve and the check valve, thus being more reliable, good in airtightness, steady in use performances, high in reliability, and convenient to dismantling and maintenance.
Description
Technical field
The present invention relates to a kind of pressure distributor, particularly relate to a kind of built-in pressure distributor.
Background technology
The effect of hydraulic pressure elevator of tractor is to connect and traction farm implements, handles the lifting of farm implements, controls agriculture
The tilth of tool, increases weight to tractor driving wheel, to improve the adhesion property of tractor, hydraulic energy
Export and on Work machine, carry out other operation.Wherein pressure distributor is the core of hydraulic control system
Part, its effect is to control the pressure of hydraulic system, flow and direction, is responsible for by controlling hydraulic jack real
Now controlling hydraulic rockshaft and complete lifting, degradation action neutral, lower, its performance is to whole tractor hydraulic
Suspension arrangement performance has the most great impact.
In recent years, tractor manufacture, development progress are accelerated, Development Trend tendency high-performance, in high precision.
Be illustrated in figure 1 traditional pressure distributor, traditional pressure distributor it include distributor body and set
Putting the main control valve in described distributor body, check valve, oil return valve, main control valve passes through main control
Valve pocket 13 is arranged in main control valve opening, have the disadvantage in that 1, the quiet sedimentation value of hydraulic rockshaft main
Ensureing by gap between main control valve and main control valve pocket, quiet sedimentation value refers to that farm implements are rising to highest order
Postpone because in focusing on half-hour period, the distance of automatic descending accounts for the ratio of whole stroke, existing dilatory
When dispatching from the factory, quiet sedimentation value is typically about 4%, if using for a long time under the meeting substantially of quiet sedimentation value for machine lifter
Fall.2, when hydraulic rockshaft handle controls to promote and decline, handle idle stroke is big, promote segmentation 20～
Between 40, decline segmentation between 160～180 sections, be unfavorable for accurately controlling.
Summary of the invention
The technical problem to be solved is to provide a kind of built-in pressure distributor, solves prior art
Deficiency.
The technical scheme is that a kind of built-in pressure distributor, including
Distributor body, the right side of described distributor body is provided with main valve protecgulum, sets inside described distributor body
There are main control valve, oil return valve, check valve；Described distributor body be provided with oil-in, oil cylinder oil inlet mouth,
Oil return opening；Described main control valve is arranged in main control valve opening, and described oil return valve is arranged in oil return valve opening,
Described check valve is arranged in unidirectional valve opening, it is characterised in that described main control valve opening and described oil return valve
Connected by oil return valve oil circuit control between hole, pass through between described main control valve opening and described unidirectional valve opening
Described in oil cylinder draining oil communication, the oil suction chamber of oil return valve is connected with described oil-in, described oil return valve
Draining chamber is connected with described oil return opening, and the oil suction chamber of described check valve is connected with described oil-in, institute
The oil pocket that goes out stating check valve is connected with described oil cylinder oil inlet mouth；It is additionally provided with decline in described main control valve opening
Valve, described lowering valve is arranged on the right side of described main control valve, and described oil cylinder oil inlet mouth passes through described oil cylinder
Draining oil circuit is connected with the oil suction chamber of described lowering valve, described lowering valve go out oil pocket and described oil return opening
It is connected；Described lowering valve includes declining spool and declining valve seat, and described lowering valve cover for seat is contained in described master
Controlling in valve opening, the right side of described lowering valve is provided with governor motion, and described governor motion includes lowering valve pressure
Tight set and lowering valve adjust bolt, and described main valve protecgulum is provided with regulation at corresponding described main control valve opening
Chamber, described lowering valve clamping sleeve is provided with lowering valve spill port, and described lowering valve clamping sleeve is arranged on described
Regulation intracavity, described lowering valve clamping sleeve is bell shape, and its opening is pressed on described decline valve seat,
Described lowering valve adjusts bolt and is arranged on the end in described regulation chamber, and described lowering valve adjusts bolt presses and exists
On described lowering valve clamping sleeve.
The invention has the beneficial effects as follows: move diverse location by main control valve at main control valve opening, control
Oil return valve oil circuit control, thus control oil return valve open and close state, simultaneously control lowering valve open with
Closed mode, it is achieved form the relation connecting or blocking between oil-in with oil cylinder oil inlet mouth, thus realize
The hydraulic jack controlling to use this allotter to control is in lifting, neutrality, the state of decline；Lowering valve
Right side is provided with governor motion, lowering valve clamping sleeve and lowering valve adjustment bolt and can adjust lowering valve and lead
Control the position in valve opening, to reach handle idle stroke minimum, decline segmentation and promote the reason that segmentation is most
Think state；Main control valve is installed with in main control valve opening with lowering valve, and main control valve can be straight with lowering valve
Contact, improves the decline of hydraulic rockshaft, promotes sensitivity, decline segmentation up to 300 sections, carry
Rise segmentation and can reach 200 sections；The quiet sedimentation value of hydraulic rockshaft is close mainly by lowering valve and check valve
Envelope state ensures, relatively reliable.The present invention built-in pressure distributor good airproof performance, control sensitive, make
With stable performance, reliability is high, convenient disassembly, it is simple to maintenance.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described oil return valve oil circuit control is provided with oil return valve adjustment hole, and described oil return valve regulates
Hole connects with the back cavity of described oil return valve.
Using above-mentioned further scheme to provide the benefit that, oil return valve throttle orifice can buffer the pass of oil return valve
Close speed, make oil return close balance, be unlikely and make what oil return valve cut out to make lift arm outside lifter too soon
Shake.
Further, it is provided with oil return valve sealing shroud in described oil return valve opening, described oil return valve sealing shroud sets
There is the valve opening matched with described oil return valve.
Using above-mentioned further scheme to provide the benefit that, oil return valve not only increases with oil return valve sealing shroud leads
Cooperatively form certain throttling action can realize oil return valve to effect and oil return valve and oil return valve sealing shroud
Body steadily opens and closes.
Further, described oil cylinder draining oil circuit is provided with regulation valve opening, is provided with tune in described regulation valve opening
Joint valve.
Using above-mentioned further scheme to provide the benefit that, in regulation valve screws in distributor body, length is different
The size of regulating oil cylinder dredge oil amount thus control the decrease speed of farm implements.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional hydraulic allotter；
Fig. 2 is distributor body structural representation of the present invention；
Fig. 3 is the B-B face sectional view of Fig. 2；
Fig. 4 is the A-A face sectional view of Fig. 3；
Fig. 5 is dispenser assembly structural representation of the present invention；
Fig. 6 is that this novel built-in pressure distributor promotes operation schematic diagram；
Fig. 7 is this novel built-in pressure distributor neutral condition fundamental diagram；
Fig. 8 is that this novel built-in pressure distributor declines operation schematic diagram；
Fig. 9 is partial enlargement schematic diagram at I in Fig. 5；
Figure 10 is lowering valve assembly structure schematic diagram；
Figure 11 is the hydraulic schematic diagram of the present invention.
In figure, 1, distributor body；2, check valve；3, oil return valve sealing shroud；4, main valve protecgulum；
5, lowering valve；5-1, decline spool；5-2, decline valve seat；6, lowering valve clamping sleeve；7, decline
Valve adjusts bolt；8, main control valve；9, oil return valve；10, unidirectional valve opening；11, oil return valve opening；12、
Main control valve opening；13, main control valve pocket；14, lowering valve spill port；15, regulation chamber；16, regulation
Valve；17, hydraulic jack；18, oil cylinder relief valve；19, oil pump；20, allotter relief valve；21、
Oil cylinder block valve；22, hydraulic pressure output；D, oil cylinder oil inlet mouth；E, oil return opening；F, oil-in；G、
Hydraulic pressure delivery outlet；T, regulation valve opening；J, oil return valve adjustment hole；H, oil return valve oil circuit control；X, oil
Cylinder draining oil circuit.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with example, example is served only for explaining this
Invention, is not intended to limit the scope of the present invention.
As shown in figs. 2-11, a kind of built-in pressure distributor, including distributor body 1, described allotter
The right side of housing 1 is provided with main valve protecgulum 4, is provided with main control valve 8, oil return inside described distributor body
Valve 9, check valve 2；Described distributor body is provided with oil-in F, oil cylinder oil inlet mouth D, oil return opening E；
Described main control valve is arranged in main control valve opening 12, and described oil return valve is arranged in oil return valve opening 11,
Described check valve is arranged in unidirectional valve opening 10, logical between described main control valve opening and described oil return valve opening
Cross oil return valve oil circuit control H connection, let out by oil cylinder between described main control valve opening and described unidirectional valve opening
Oil oil circuit X connection, the oil suction chamber of described oil return valve is connected with described oil-in, letting out of described oil return valve
Oil pocket is connected with described oil return opening, and the oil suction chamber of described check valve is connected with described oil-in, described
The oil pocket that goes out of check valve is connected with described oil cylinder oil inlet mouth；It is additionally provided with lowering valve in described main control valve opening
5, described lowering valve is arranged on the right side of described main control valve, and described oil cylinder oil inlet mouth passes through described oil cylinder
Draining oil circuit is connected with the oil suction chamber of described lowering valve, described lowering valve go out oil pocket and described oil return opening
It is connected；Described lowering valve includes declining spool 5-1 and declining valve seat 5-2, and described lowering valve cover for seat fills
In described main control valve opening, the right side of described lowering valve is provided with governor motion, and described governor motion includes
Lowering valve clamping sleeve 6 and lowering valve adjust bolt 7, and described main valve protecgulum 4 is at corresponding described main control valve
Being provided with regulation chamber at hole, described lowering valve clamping sleeve 6 is provided with lowering valve spill port, described lowering valve pressure
Tight set 6 is arranged on described regulation intracavity, and described lowering valve clamping sleeve 6 is in bell shape, and its opening compresses
On described decline valve seat 5-2, described lowering valve adjusts bolt 7 and is arranged on the end in described regulation chamber,
Described lowering valve adjusts bolt 7 and is pressed on described lowering valve clamping sleeve 6.
It is additionally provided with the hydraulic pressure for user's other hydraulic circuit external on described pressure distributor housing to export
Hole G.The hydraulic pressure delivery outlet of hydraulic pressure output in the present invention is closed.
The opening of lowering valve clamping sleeve 6 abuts against on decline valve seat, is used for adjusting decline valve seat in master control
Position in valve opening processed, lowering valve adjusts bolt 7 and holds out against the end face at main valve protecgulum 4, is used for fixing down
Fall valve clamping sleeve 6 and the position of adjustment lowering valve clamping sleeve 6.
Described oil return valve oil circuit control is provided with oil return valve adjustment hole J, and described oil return valve adjustment hole leads to institute
State the back cavity of oil return valve.Oil return valve adjustment hole J is used for buffering the speed that oil return valve cuts out, and is unlikely and makes back
What fuel tap cut out makes lift arm outside lifter shake too soon.
Being provided with oil return valve sealing shroud 3 in described oil return valve opening, described oil return valve sealing shroud is provided with described
The valve opening that oil return valve matches.Oil return valve and oil return valve sealing shroud not only increase guide effect but also oil return valve
Cooperatively form certain throttling action with oil return valve sealing shroud to realize oil return valve body and steadily open and close.
Described oil cylinder draining oil circuit is provided with regulation valve opening T, is provided with regulation valve 16 in described regulation valve opening T.
Regulation valve screws in the size of length difference regulating oil cylinder dredge oil amount in distributor body thus controls farm implements
Decrease speed.
It is as follows that the oil circuit of pressure distributor of the present invention controls operation principle:
When promoting state as shown in Figure 6, main control valve moves left-most position, oil return valve oil circuit control H
Communicating with oil-in F, the hydraulic oil come from oil pump enters the back cavity of oil return valve 9, at hydraulic fluid pressure and
Under spring-force driven dual, oil return valve coordinates oil return valve 9 to cut out with oil return valve sealing shroud, simultaneously because of main control valve 8
With lowering valve 5 not in contact with, lowering valve 5 is closed, and oil pump hydraulic oil is opened check valve 2 and passed through
Oil cylinder oil inlet mouth D enters hydraulic jack, oil cylinder piston moves and realizes farm implements lifting.
As shown in Figure 7 during neutral condition, main control valve 8 moves right and closes oil return valve oil circuit control H,
During this state, lowering valve 5 is opened not yet, and under oil pump hydraulic oil effect, oil return valve 9 is opened, oil pump high pressure
Oil directly flows back to fuel tank through oil return valve sealing shroud 3 by oil return opening.
When declining state as shown in Figure 8, main control valve 8 continues the closing oil return valve oil circuit control that moves right
H, main control valve 8 promotes decline spool to move right simultaneously, lowering valve 5 under main control valve 8 acts on
Opening, lowering valve 5 is opened as shown in Figure 9, and under oil pump hydraulic oil pressure, oil return valve 9 is opened, oil pump
Hydraulic oil directly flows back to fuel tank by oil return opening through oil return valve sealing shroud 3, because lowering valve 5 opens hydraulic pressure
In oil cylinder, hydraulic oil passes through oil return opening stream through oil cylinder oil inlet mouth D, oil cylinder draining oil circuit X, lowering valve 5
Oil sump tank.
Low discharge pressure distributor of the present invention can be widely applied to big-and-middle horsepower tractor hydraulic pressure suspension arrangement.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (4)
1. a built-in pressure distributor, including distributor body, the right side of described distributor body sets
There is main valve protecgulum, inside described distributor body, be provided with main control valve, oil return valve, check valve, described point
Orchestration housing is provided with oil-in, oil cylinder oil inlet mouth, oil return opening, and described main control valve is arranged on main control
In valve opening, described oil return valve is arranged in oil return valve opening, and described check valve is arranged in unidirectional valve opening, its
It is characterised by, is connected by oil return valve oil circuit control between described main control valve opening with described oil return valve opening,
By oil cylinder draining oil communication between described main control valve opening and described unidirectional valve opening, described oil return valve
Oil suction chamber is connected with described oil-in, and the draining chamber of described oil return valve is connected with described oil return opening, institute
The oil suction chamber stating check valve is connected with described oil-in, and the oil pocket that goes out of described check valve enters with described oil cylinder
Hydraulic fluid port is connected；Being additionally provided with lowering valve in described main control valve opening, described lowering valve is arranged on described master control
The right side of valve processed, described oil cylinder oil inlet mouth is by the oil suction chamber of described oil cylinder draining oil circuit with described lowering valve
Being connected, the oil pocket that goes out of described lowering valve is connected with described oil return opening；Described lowering valve includes lowering valve
Core and decline valve seat, described lowering valve cover for seat is contained in described main control valve opening, the right side of described lowering valve
Being provided with governor motion, described governor motion includes that lowering valve clamping sleeve and lowering valve adjust bolt, described master
Valve protecgulum is provided with regulation chamber at corresponding described main control valve opening, and described lowering valve clamping sleeve is provided with decline
Valve spill port, described lowering valve clamping sleeve is arranged on described regulation intracavity, and described lowering valve clamping sleeve is clock
Hood-shaped, its opening is pressed on described decline valve seat, and described lowering valve adjusts bolt and is arranged on described tune
The end in joint chamber, described lowering valve adjusts bolt presses on described lowering valve clamping sleeve.
Built-in pressure distributor the most according to claim 1, it is characterised in that described oil return valve
Oil circuit control is provided with oil return valve adjustment hole, and described oil return valve adjustment hole connects with the back cavity of described oil return valve
Logical.
Built-in pressure distributor the most according to claim 1, it is characterised in that described oil return valve
Being provided with oil return valve sealing shroud in hole, described oil return valve sealing shroud is provided with the valve matched with described oil return valve
Hole.
Built-in pressure distributor the most according to claim 1, it is characterised in that described oil cylinder is let out
Oil oil circuit is provided with regulation valve opening, is provided with regulation valve in described regulation valve opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566333.XA CN106015146B (en) | 2016-07-18 | 2016-07-18 | A kind of built-in pressure distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566333.XA CN106015146B (en) | 2016-07-18 | 2016-07-18 | A kind of built-in pressure distributor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106015146A true CN106015146A (en) | 2016-10-12 |
| CN106015146B CN106015146B (en) | 2018-09-25 |
Family
ID=57119684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610566333.XA Active CN106015146B (en) | 2016-07-18 | 2016-07-18 | A kind of built-in pressure distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015146B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762906A (en) * | 2016-12-27 | 2017-05-31 | 恒天九五重工有限公司 | A kind of hydraulic crawler excavator main pump power aux. control valve |
| CN107956757A (en) * | 2017-12-08 | 2018-04-24 | 山东弘宇农机股份有限公司 | A kind of multifunctional assembled hydraulic control valve |
| CN110753489A (en) * | 2017-06-15 | 2020-02-04 | 土耳其赫马公司 | Control valve for hydraulic lifter |
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| US6105613A (en) * | 1997-05-13 | 2000-08-22 | Mita Oleodinamica S.P.A. | Distributor for a hydraulic hoist which is controllable with regard to position and applied force, for tractors and agricultural machines |
| CN200940613Y (en) * | 2006-03-31 | 2007-08-29 | 洛阳拖拉机研究所有限公司 | Tractor hydraulic distributor |
| CN201180809Y (en) * | 2008-04-03 | 2009-01-14 | 于晓卿 | Large-horsepower distributer spill valve |
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| CN202209327U (en) * | 2011-08-26 | 2012-05-02 | 山东弘宇机械有限公司 | Connection mode of hydraulic distributor |
| CN203906428U (en) * | 2014-06-13 | 2014-10-29 | 山东弘宇农机股份有限公司 | Integral-type hydraulic distributor of new structure |
| CN205858823U (en) * | 2016-07-18 | 2017-01-04 | 山东弘宇农机股份有限公司 | A kind of built-in pressure distributor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762906A (en) * | 2016-12-27 | 2017-05-31 | 恒天九五重工有限公司 | A kind of hydraulic crawler excavator main pump power aux. control valve |
| CN106762906B (en) * | 2016-12-27 | 2018-03-30 | 恒天九五重工有限公司 | A kind of hydraulic crawler excavator main pump power aux. control valve |
| CN110753489A (en) * | 2017-06-15 | 2020-02-04 | 土耳其赫马公司 | Control valve for hydraulic lifter |
| EP3638935A4 (en) * | 2017-06-15 | 2021-08-04 | Hema Endüstri Anonim Sirketi | A control valve for hydraulic lifters |
| CN107956757A (en) * | 2017-12-08 | 2018-04-24 | 山东弘宇农机股份有限公司 | A kind of multifunctional assembled hydraulic control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106015146B (en) | 2018-09-25 |
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