CN105889574B - A kind of gearbox of dual-pulling rod type with cutting function manipulation valve - Google Patents
A kind of gearbox of dual-pulling rod type with cutting function manipulation valve Download PDFInfo
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- CN105889574B CN105889574B CN201610409679.9A CN201610409679A CN105889574B CN 105889574 B CN105889574 B CN 105889574B CN 201610409679 A CN201610409679 A CN 201610409679A CN 105889574 B CN105889574 B CN 105889574B
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- valve
- gear
- valve body
- gearshift
- valve rod
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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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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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
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
- F16H2061/308—Modular hydraulic shift units, i.e. preassembled actuator units for select and shift movements adapted for being mounted on transmission casing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
A kind of gearbox of dual-pulling rod type with cutting function manipulation valve, it includes one and is integrated with direction shift valve, gear shift valve, repid cut-off valve and forms the valve body that a gearbox manipulates valve, in being shifted gears valve rod inserted with the direction that can be slided in valve body in described valve body, the one end of the direction gearshift valve rod is encapsulated in valve body, and the other end is stretched out outside valve body；In the inner side of valve body, first sealed support is enclosed on direction gearshift valve rod, first sealing ring is enclosed on the first sealed support inside groove and direction gearshift valve stem contacts, second sealing ring is enclosed on the first sealed support water jacket and valve body contact, one first outside framework oil seal is on the outside of the first sealed support, first back-up ring is on the outside of the first outside framework oil seal and is stuck on valve body, and the first sealed support, the first sealing ring, the second sealing ring, the first outside framework oil seal and the first back-up ring realize the sealing structure of direction shift valve jointly；It has the characteristics that easily manufactured, cost is low, compact-sized, wide adaptation range, versatility are good.
Description
Technical field
Valve is manipulated with machine hydraulic control system the present invention relates to a kind of construction machinery gear box of dual-pulling rod type with cutting function,
Belong to the gearbox hydraulic gear-shifting steerable system for manipulating valve block, especially dynamic power shift gear box of hydraulic drive field.
Background technology
The gearshift of power shift transmission of engineering machinery is mainly by the combination and disconnection of wet friction clutch come real
Existing, different gears are then combined to come in order by different clutches, to realize the process, it is necessary to have a cuff pressure valve, gear
Position valve, the hydraulic system of the Hydraulic Elements such as trimmer valve are realized.For ease of installing, reducing volume, simplify connecting line, generally will
All or which part hydraulic valve is integrated on a valve body, makes a manipulation valve block.Existing manipulation valve can pass through electromagnetism
Then switch valve realizes different gears, i.e. electrichydraulic control as pilot control gear valve element by the combination of magnetic valve.But electricity
The cost of hydraulic control is higher, is not also applied in the special occasion for having requirement of explosion proof, it is therefore desirable to has the behaviour for manually drawing valve rod
Vertical valve, i.e. machine hydraulic control system.It is existing at present to realize before 2 the 2 machine hydraulic control valves for falling 1 neutral gear function, it is by two valve rods
Control, and each gear has two sets of clutch oil-feeds, it is impossible to realize and control each gear there was only a set of clutch by two valve rods
The situation of device oil-feed.21 neutral gears, and often gear only has a set of clutch oil-feed before can be achieved 2 by a valve rod control
Function, but this is different from original operating habit, can bring certain trouble.
The content of the invention
It is an object of the invention to overcome the shortcomings of the prior art, and offer is a kind of compact-sized, and reliability is higher,
Cost is relatively low, possesses fast shut-off function, 21 neutral gear functions, and often gear before realizing 2 by two valve rods of control
There is gearbox of the dual-pulling rod type of a set of clutch oil-feed with cutting function manipulation valve.
The purpose of the present invention is completed by following technical solution, and band cutting function duplex pull rod gearbox manipulates
Valve, it includes one and is integrated with direction shift valve, gear shift valve, repid cut-off valve and forms the valve that a gearbox manipulates valve
Body.
Inserted with the direction gearshift valve rod that can be slided in valve body, one end of the direction gearshift valve rod in described valve body
Portion is encapsulated in valve body, and the other end is stretched out outside valve body；In the inner side of valve body, one first sealed support is enclosed on direction gearshift
On valve rod, the first sealing ring is enclosed on the first sealed support inside groove and direction gearshift valve stem contacts, and it is close that the second sealing ring is enclosed on first
Support water jacket and valve body contact are sealed, one first outside framework oil seal is on the outside of the first sealed support, and one first back-up ring is in the first skeleton oil
Envelope outside is simultaneously stuck on valve body, the first sealed support, the first sealing ring, the second sealing ring, the first outside framework oil seal and the first back-up ring
The sealing structure of direction shift valve is realized jointly.
One first spring one end is pressed on the first steel ball in described valve body, and the first steel ball is pressed on direction gearshift valve rod,
The other end of first spring is pressed on the first plug screw, tells that the first spring, the first steel ball pass through the first plug screw and the first sealing gasket
It is encapsulated in valve body, plays the position-limiting action of direction shift process jointly.
Inserted with the fast shut-off valve element that can be slided in valve body, described fast shut-off valve element and side in described valve body
To gearshift valve rod in the same centre bore of valve body, a locking plate is inserted in fast shut-off valve element and direction gearshift valve rod in valve body
Separate；One cut-out valve spring one end is pressed on fast shut-off valve element end face, and the cut-out valve spring other end is pressed on locking plate；Quickly
The other end of cut-out valve element is encapsulated in valve body by plug and the second back-up ring, and one the 3rd sealing ring is enclosed on plug, and one the
Four sealing rings are enclosed on fast shut-off valve element, play seal pressure oil.
Inserted with the gear gearshift valve rod that can be slided in valve body, one end of the gear gearshift valve rod in described valve body
Portion is encapsulated in valve body, and the other end is stretched out outside valve body.In the inner side of valve body, one second sealed support is enclosed on gear gearshift
On valve rod, the 5th sealing ring is enclosed on the second sealed support inside groove and gear gearshift valve stem contacts, and it is close that the 6th sealing ring is enclosed on second
Support water jacket and valve body contact are sealed, one second outside framework oil seal is on the outside of the second sealed support, and a third gear circle is in the second skeleton oil
Envelope outside is simultaneously stuck on valve body, the second sealed support, the 5th sealing ring, the 6th sealing ring, the second outside framework oil seal and third gear circle
The sealing structure of gear shift valve is realized jointly.
A second spring one end is pressed on the second steel ball in described valve body, and the second steel ball is pressed on gear gearshift valve rod,
The other end of second spring is pressed on the second plug screw, tells that second spring, the second steel ball pass through the second plug screw and the second sealing gasket
It is encapsulated in valve body, plays the position-limiting action of gear shift process jointly.
The one end of the gear gearshift valve rod is encapsulated in valve body by the 3rd plug screw and the 3rd sealing gasket, described gear
Position gearshift valve rod is arranged in parallel in valve body with direction gearshift valve rod；4th plug screw and the 4th sealing gasket, the 5th plug screw and the 5th
Four clutch pressure taps are encapsulated in valve body by sealing gasket, the 6th plug screw and the 6th sealing gasket, the 7th plug screw and the 7th sealing gasket
Interior, for four pressure taps with the second plug screw on same center line, side arranges that three opposite sides arrange one.
Described valve body, direction gearshift valve rod, gear gearshift valve rod, oil groove, oil groove bag are provided with fast shut-off valve element
Include pressure port and oil return opening；Described direction shift valve includes main pressure port, advance pressure port, falls back pressure port, the first oil return
Mouthful；Described repid cut-off valve includes cut-out pressure mouth, principal pressure import, principal pressure outlet；Described gear shift valve includes
1 is fallen back to keep off clutch pressure mouth, fall back 2 gear clutch pressure mouths, the 1 gear clutch pressure mouth that advances, the gear clutch pressures of advance 2
Mouth, fall back gear pressure port, forward gear pressure port, the second oil return opening, the 3rd oil return opening, the 4th oil return opening；It is direction gearshift valve rod, fast
Speed cut-out valve element, gear gearshift valve rod can slide in valve body；The slip of fast shut-off valve element can be achieved principal pressure import and
Break-make between principal pressure outlet；Direction gearshift valve rod slides in valve body, is limited direction gearshift valve rod by the first steel ball
Three positions, direction gearshift valve rod is corresponding when moving outermost to fall back gear, and neutral correspond to when middle, corresponding advance during most inner side
Gear；Gear gearshift valve rod is slided in valve body, and gear gearshift valve rod is limited into three positions, gear shift valve by the second steel ball
A corresponding gear, correspond to neutral when bar moves outermost to when middle, and corresponding two keep off during most inner side.
Brief description of the drawings
Fig. 1 is the manipulation valve arrangement schematic diagram of the present invention.
Fig. 2 is the direction shift valve neutral gear position and repid cut-off valve sectional view of A-A in Fig. 1.
The direction shift valve retroversion gear that Fig. 3 is A-A in Fig. 1 is put and repid cut-off valve sectional view.
Fig. 4 is direction shift valve forward gear position and the repid cut-off valve sectional view of A-A in Fig. 1.
Fig. 5 is the gear shift valve neutral gear position sectional view of B-B in Fig. 1.
Fig. 6 is that the gear of B-B gears shift valve 1 puts sectional view in Fig. 1.
Fig. 7 is that the gear of B-B gears shift valve 2 puts sectional view in Fig. 1.
In Fig. 1：I- valve bodies；II- directions shift valve；III- repid cut-off valves；IV- gear shift valves；Inside Y1, Y2, Y3
Connect oil duct.
In Fig. 2：1- directions gearshift valve rod；The back-up rings of 2- first；The outside framework oil seals of 3- first；The sealing rings of 4- second；5- first is close
Seal support；The sealing rings of 6- first；The steel balls of 7- first；The springs of 8- first；The plug screws of 9- first；The sealing gaskets of 10- first；11- locking plates；
12- cuts off valve spring；13- fast shut-off valve elements；The sealing rings of 14- the 4th；The sealing rings of 15- the 3rd；16- plugs；17- second gear
Circle；The oil return openings of T1- first；PR- falls back pressure port；P3- main pressure ports；PF- advance pressure ports；P2- principal pressures export；P1- master
Pressure inlets；PD- cut-out pressure mouths.
In Fig. 5：21- gears gearshift valve rod；22- third gear circles；The outside framework oil seals of 23- second；The sealing rings of 24- the 6th；25-
Two sealed supports；The sealing rings of 26- the 5th；The plug screws of 27- the 4th；The sealing gaskets of 28- the 4th；The plug screws of 29- the 5th；The sealing gaskets of 30- the 5th；
The plug screws of 31- the 6th；The sealing gaskets of 32- the 6th；The plug screws of 33- second；The sealing gaskets of 34- second；35- second springs；The steel balls of 36- second；
The plug screws of 37- the 7th；The sealing gaskets of 38- the 7th；The plug screws of 39- the 3rd；The sealing gaskets of 40- the 3rd；The oil return openings of T2- second；R1- falls back 1 gear
Clutch pressure mouth；R- falls back gear pressure port；R2- falls back 2 gear clutch pressure mouths；The oil return openings of T3- the 3rd；F1- advance 1 keep off from
Clutch pressure port；F- forward gear pressure ports；The gear clutch pressure mouths of F2- advances 2；The oil return openings of T4- the 4th；CR1- fall back 1 keep off from
Clutch pressure tap；CR2- falls back 2 gear clutch pressure taps；The gear clutch pressure tap of CF1- advances 1；The gear clutches of CF2- advances 2
Pressure tap.
The effect of invention：The present invention realizes the fast shut-off of principal pressure by repid cut-off valve, in case of emergency may be used
So that gearbox quickly is in into neutral position state.Shifted gears valve rod by shift gears valve rod and gear of control direction, before realizing 22 fall it is 1 empty
The gearbox gear function demand of gear, and each gear only has a set of clutch to enter pressure oil.The present invention is formed integrated
Machine hydraulic control system manipulates valve, reduces volume, simplifies connecting line, be easily installed, disclosure satisfy that under the specific environment such as explosion-proof,
More gear dynamic power shift gear boxes manipulate the demand of valve to machine liquid.
The manipulation valve of the present invention has that easily manufactured, cost is relatively low, compact-sized, reliability is higher, accommodation simultaneously
Extensively, the features such as versatility is good, it can meet that different type and gear number are less than or equal to before 2 the 2 machine hydraulic control gearboxes for falling 1 neutral
Use.
Embodiment
Detailed introduction is done to embodiment of the present invention below in conjunction with the accompanying drawings：As shown in Figure 1, Figure 2, Figure 5, band of the invention
Cutting function duplex pull rod gearbox manipulates valve and is integrated with direction shift valve II, gear shift valve IV, repid cut-off valve including one
III simultaneously forms the gearbox valve body I for manipulating valve.
Shifted gears valve rod 1 inserted with the direction that can be slided in valve body I in described valve body I, the direction gearshift valve rod 1
One end is encapsulated in valve body I, and the other end is stretched out outside valve body I；In valve body I inner side, one first sealed support set 5 exists
On direction gearshift valve rod 1, the first sealing ring 6 is enclosed on the inside groove of the first sealed support 5 and contacted with direction gearshift valve rod 1, the second sealing
Circle 4 is enclosed on the water jacket of the first sealed support 5 and contacted with valve body I, and one first outside framework oil seal 3 is on the outside of the first sealed support 5, and one first
Back-up ring 2 is in the outside of the first outside framework oil seal 3 and is stuck on valve body I, the first sealed support 5, the first sealing ring 6, the second sealing ring 4,
First outside framework oil seal 3 and the first back-up ring 2 realize direction shift valve II sealing structure jointly.
The one end of one first spring 8 is pressed on the first steel ball 7 in described valve body I, and the first steel ball 7 is pressed in direction gearshift valve rod
On 1, the other end of the first spring 8 is pressed on the first plug screw 9, tells that the first spring 8, the first steel ball 7 pass through the first plug screw 9 and
One sealing gasket 10 is encapsulated in valve body I, plays the position-limiting action of direction shift process jointly.
Inserted with the fast shut-off valve element 13 that can be slided in valve body I, described fast shut-off valve element in described valve body I
13 shift gears valve rod 1 in the same centre bores of valve body I with direction, and a locking plate 11 is inserted in fast shut-off valve element 13 in valve body I
Separated with direction gearshift valve rod 1；One cut-out valve spring 12 one end is pressed on the end face of fast shut-off valve element 13, cuts off valve spring 12
The other end is pressed on locking plate 11；The other end of fast shut-off valve element 13 is encapsulated in valve body I by the back-up ring 17 of plug 16 and second
Interior, one the 3rd sealing ring 15 is enclosed on plug 16, and one the 4th sealing ring 14 is enclosed on fast shut-off valve element 13, plays seal pressure oil
Effect.
Inserted with the gear gearshift valve rod 21 that can be slided in valve body I, the gear gearshift valve rod 21 in described valve body I
One end be encapsulated in valve body I, the other end stretch out outside valve body I.In valve body I inner side, one second sealed support 25
It is enclosed on gear gearshift valve rod 21, the 5th sealing ring 26 is enclosed on the inside groove of the second sealed support 25 and contacted with gear gearshift valve rod 21,
6th sealing ring 24 is enclosed on the water jacket of the second sealed support 25 and contacted with valve body I, and one second outside framework oil seal 23 is in the second sealed support
25 outsides, a third gear circle 22 is in the outside of the second outside framework oil seal 23 and is stuck on valve body I, the sealing of the second sealed support the 25, the 5th
The 26, the 6th sealing ring 24 of circle, the second outside framework oil seal 23 and third gear circle 22 realize gear shift valve IV sealing structure jointly.
The one end of a second spring 35 is pressed on the second steel ball 36 in described valve body I, and the second steel ball 36 is pressed in gear gearshift
On valve rod 21, the other end of second spring 35 is pressed on the second plug screw 33, tells second spring 35, the second steel ball 36 by second
The sealing gasket 34 of plug screw 33 and second is encapsulated in valve body I, plays the position-limiting action of gear shift process jointly.
The one end of the gear gearshift valve rod 21 is encapsulated in valve body I by the 3rd plug screw 39 and the 3rd sealing gasket 40,
Described gear gearshift valve rod 21 is arranged in parallel in valve body I with direction gearshift valve rod 1；4th plug screw 27 and the 4th sealing gasket
28th, the 5th plug screw 29 and the 5th sealing gasket 30, the 6th plug screw 31 and the 6th sealing gasket 32, the 7th plug screw and 37 the 7th sealing gaskets 38
Retroversion 1 is kept off into clutch pressure tap CR1 respectively, retroversion 2 keeps off clutch pressure tap CR2, advance 1 keeps off clutch pressure tap CF1, preceding
Enter 2 gear clutch pressure tap CF2 to be encapsulated in valve body I, four pressure taps on same center line, fall back 1 with the second plug screw 33
Gear clutch pressure tap CR1, the gear clutch pressure tap of retroversion 2 CR2, the 1 gear clutch pressure tap CF1 that advances are arranged in the second plug screw
33 side, the 2 gear clutch pressure tap CF2 that advance are arranged in opposite side.
Described valve body I, direction gearshift valve rod 1, gear gearshift valve rod 21, oil groove is provided with fast shut-off valve element 13,
Oil groove includes pressure port and oil return opening；Described direction shift valve II includes main pressure port P3, advance pressure port PF, falls back pressure
Mouth PR, the first oil return inlet T 1；Described repid cut-off valve III includes cut-out pressure mouth PD, principal pressure import P1, principal pressure outlet
P2；Described gear shift valve IV is including falling back 1 gear clutch pressure mouth R1, falling back 2 gear clutch pressure mouth R2, the gear of advance 1
Clutch pressure mouth F1, the 2 gear clutch pressure mouth F2 that advance, fall back gear pressure port R, forward gear pressure port F, the second oil return opening
T2, the 3rd oil return inlet T 3, the 4th oil return inlet T 4.
Direction gearshift valve rod 1, fast shut-off valve element 13, gear gearshift valve rod 21 can slide in valve body I；Fast shut-off
The break-make between principal pressure import P1 and principal pressure outlet P2 can be achieved in the slip of valve element 12；Valve rod 1 shift gears in valve body I in direction
Slide, direction gearshift valve rod 1 is limited by three positions by the first steel ball 7, direction gearshift valve rod 1 correspondingly falls when moving outermost to
Move back gear, neutral corresponded to when middle, most inner side when correspond to forward gear；Gear gearshift valve rod 21 slides in valve body I, passes through the second steel
Gear gearshift valve rod is limited three positions by ball 36, and gear gearshift valve rod 21 moves corresponding gear during outermost to, corresponding when middle
Corresponding two gear during neutral, most inner side；Principal pressure outlet P2 is connected with main pressure port P3 by Y1 oil ducts, falls back pressure port PF with falling
Move back gear pressure port F to connect by Y2 oil ducts, advance pressure port PF is connected with forward gear pressure port F by Y3 oil ducts.
The present invention operation principle be：
Pressure fuel pump oil enters principal pressure import P1, when repid cut-off valve III cut-out pressure mouth PD not oil-feeds, principal pressure
Import P1 connects with principal pressure outlet P2, then the main pressure port P3 by Y1 oil duct approach axis shift valves II, now quickly cuts
Disconnected valve III does not work；When repid cut-off valve III cut-out pressure mouth PD oil-feeds, principal pressure import P1 and principal pressure outlet P2
It is separated, pressure oil is unable to approach axis shift valve II main pressure port P3, and now repid cut-off valve III works, force
Gearbox is neutral.
Fig. 2 is that direction shift valve II is in neutral position state, advance pressure port PF and retroversion pressure port PR not with main pressure port
P3 is connected, and is connected with the first oil return inlet T 1, realizes neutral.；
Fig. 3 is that direction shift valve II is in the state of reversing gear, and falls back pressure port PR and is connected with main pressure port P3, advance pressure port
PF is connected with the first oil return inlet T 1, and realization is reversed gear.
Fig. 4 is that direction shift valve II is in forward gear state, and advance pressure port PF connects with main pressure port P3, falls back pressure
Mouth PR connects with the first oil return inlet T 1, realizes forward gear.
Fig. 5 is that gear shift valve IV is in neutral position state, falls back 1 gear clutch pressure mouth R1 and falls back 2 gear clutch pressures
Power mouth R2 connect with falling back gear pressure port R, advance 1 gear clutch pressure mouth F1 and advance 2 keep off clutch pressure mouth F2 not with
Forward gear pressure port F is connected, and is fallen back 1 gear clutch pressure mouth R1 and is connected with the second oil return inlet T 2, falls back 2 gear clutch pressure mouths
R2 and the 1 gear clutch pressure mouth F1 that advances connect with the 3rd oil return inlet T 3, and advance 2 gear clutch pressure mouth F2 and the 4th oil return opening
T4 is connected, and realizes neutral.
Fig. 6 is that gear shift valve IV is in 1 gear state, falls back 1 gear clutch pressure mouth R1 and connects with falling back gear pressure port R
Logical, the 1 gear clutch pressure mouth F1 that advances connects with forward gear pressure port F, falls back 2 gear clutch pressure mouth R2 and the 3rd oil return opening
T3 is connected, and the 2 gear clutch pressure mouth F2 that advance connect with the 4th oil return inlet T 4, realize 1 gear；Now if shift valve II in direction is in
Forward gear, pressure oil enters forward gear pressure port F from advance pressure port PF through Y3 oil ducts, then keeps off clutch pressure mouth with advance 1
F1 is connected, and realizes 1 gear that advances；If now shift valve II in direction is in retroversion gear, pressure oil is from pressure port PR is fallen back through Y2 oil ducts
Pressure port R is kept off into falling back, then is connected with falling back 1 gear clutch pressure mouth R1, realizes and falls back 1 gear.
Fig. 7 is that gear shift valve IV is in 2 gear states, falls back 2 gear clutch pressure mouth R2 and connects with falling back gear pressure port R
Logical, the 2 gear clutch pressure mouth F2 that advance connect with forward gear pressure port F, fall back 1 gear clutch pressure mouth R1 and the 4th oil return opening
T4 is connected, and the 1 gear clutch pressure mouth F1 that advances connects with the 3rd oil return inlet T 3, realizes 2 gears；Now if shift valve II in direction is in
Forward gear, pressure oil enters forward gear pressure port F from advance pressure port PF through Y3 oil ducts, then keeps off clutch pressure mouths with advance 2
F2 is connected, and realizes 2 gears that advance；Now shift valve II in direction is in retroversion gear, and pressure oil enters from pressure port PR is fallen back through Y2 oil ducts
Enter to fall back gear pressure port R, then connected with falling back 2 gear clutch pressure mouth R2, realize and fall back 2 gears.
Claims (1)
1. for a kind of gearbox of dual-pulling rod type with cutting function with valve is manipulated, it is integrated with direction shift valve including one（II）, gear
Position shift valve（IV）, repid cut-off valve（III）And form the gearbox valve body for manipulating valve（I）, it is characterised in that it is described
Valve body（I）It is interior inserted with can be in valve body（I）The direction gearshift valve rod of interior slip（1）, the direction gearshift valve rod（1）One end
It is encapsulated in valve body（I）Interior, the other end is stretched out in valve body（I）Outside；In valve body（I）Inner side, one first sealed support set（5）
In direction gearshift valve rod（1）On, the first sealing ring（6）It is enclosed on the first sealed support（5）Inside groove and direction gearshift valve rod（1）Connect
Touch, the second sealing ring（4）It is enclosed on the first sealed support（5）Water jacket and valve body（I）Contact, one first outside framework oil seal（3）First
Sealed support（5）Outside, one first back-up ring（2）In the first outside framework oil seal（3）Outside is simultaneously stuck in valve body（I）On, the first sealing branch
Frame（5）, the first sealing ring（6）, the second sealing ring（4）, the first outside framework oil seal（3）With the first back-up ring（2）Direction is realized jointly
Shift valve（II）Sealing structure；
Described valve body（I）Interior one first spring（8）One end is pressed in the first steel ball（7）On, the first steel ball（7）It is pressed in direction gearshift
Valve rod（1）On, the first spring（8）The other end be pressed in the first plug screw（On 9, first spring（8）, the first steel ball（7）Pass through
First plug screw（9）With the first sealing gasket（10）It is encapsulated in valve body（I）It is interior, the position-limiting action of direction shift process is played jointly；
Described valve body（I）It is interior inserted with can be in valve body（I）The fast shut-off valve element of interior slip（13）, described repid cut-off valve
Core（13）With direction gearshift valve rod（1）In valve body（I）In same centre bore, a locking plate（11）It is inserted in valve body（I）It is interior to incite somebody to action soon
Speed cut-out valve element（13）With direction gearshift valve rod（1）Separate；One cut-out valve spring（12）One end is pressed in fast shut-off valve element
（13）On end face, valve spring is cut off（12）The other end is pressed in locking plate（11）On；Fast shut-off valve element（13）The other end pass through
Plug（16）With the second back-up ring（17）It is encapsulated in valve body（I）It is interior, one the 3rd sealing ring（15）It is enclosed on plug（16）On, one the 4th is close
Seal（14）It is enclosed on fast shut-off valve element（13）On, play seal pressure oil；
Described valve body（I）It is interior inserted with can be in valve body（I）The gear gearshift valve rod of interior slip（21）, the gear gearshift valve rod
（21）One end be encapsulated in valve body（I）Interior, the other end is stretched out in valve body（I）Outside；In valve body（I）Inner side, one second
Sealed support（25）It is enclosed on gear gearshift valve rod（21）On, the 5th sealing ring（26）It is enclosed on the second sealed support（25）Inside groove and gear
Position gearshift valve rod（21）Contact, the 6th sealing ring（24）It is enclosed on the second sealed support（25）Water jacket and valve body（I）Contact, one second
Outside framework oil seal（23）In the second sealed support（25）Outside, a third gear circle（22）In the second outside framework oil seal（23）Outside is simultaneously stuck in
Valve body（I）On, the second sealed support（25）, the 5th sealing ring（26）, the 6th sealing ring（24）, the second outside framework oil seal（23）With
Three back-up rings（22）Gear shift valve is realized jointly（IV）Sealing structure；
Described valve body（I）An interior second spring（35）One end is pressed in the second steel ball（36）On, the second steel ball（36）It is pressed in gear
Gearshift valve rod（21）On, second spring（35）The other end be pressed in the second plug screw（33）On, the second spring（35）, second
Steel ball（36）Pass through the second plug screw（33）With the second sealing gasket（34）It is encapsulated in valve body（I）It is interior, gear is played jointly shifted gears
The position-limiting action of journey；
The gear gearshift valve rod（21）One end pass through the 3rd plug screw（39）With the 3rd sealing gasket（40）It is encapsulated in valve body（I）
Interior, described gear gearshift valve rod（21）With direction gearshift valve rod（1）It is arranged in parallel in valve body（I）It is interior；4th plug screw（27）With
4th sealing gasket（28）, the 5th plug screw（29）With the 5th sealing gasket（30）, the 6th plug screw（31）31 and the 6th sealing gasket（32）,
Seven plug screws and（37）7th sealing gasket（38）1 gear clutch pressure tap will be fallen back respectively（CR1）, fall back 2 gear clutch pressure taps
（CR2）, advance 1 gear clutch pressure tap（CF1）, advance 2 gear clutch pressure taps（CF2）It is encapsulated in valve body（I）It is interior, four surveys
Press mouth and the second plug screw（33）On same center line, 1 gear clutch pressure tap is fallen back（CR1）, fall back 2 gear clutch pressure taps
（CR2）, advance 1 gear clutch pressure tap（CF1）It is arranged in the second plug screw（33）Side, advance 2 gear clutch pressure taps
（CF2）It is arranged in opposite side；
Described valve body（I）, direction gearshift valve rod（1）, gear gearshift valve rod（21）, fast shut-off valve element（13）On be provided with oil
Groove, oil groove include pressure port and oil return opening；Described direction shift valve（II）Including main pressure port（P3）, advance pressure port
（PF）, fall back pressure port（PR）, the first oil return opening（T1）；Described repid cut-off valve（III）Including cut-out pressure mouth（PD）, it is main
Pressure inlets（P1）, principal pressure outlet（P2）；Described gear shift valve（IV）Including falling back 1 gear clutch pressure mouth（R1）、
Fall back 2 gear clutch pressure mouths（R2）, advance 1 gear clutch pressure mouth（F1）, advance 2 gear clutch pressure mouths（F2）, fall back
Keep off pressure port（R）, forward gear pressure port（F）, the second oil return opening（T2）, the 3rd oil return opening（T3）, the 4th oil return opening（T4）；
Direction gearshift valve rod（1）, fast shut-off valve element（13）, gear gearshift valve rod（21）Can be in valve body（I）Interior slip；Quickly
Cut off valve element（12）Slip principal pressure import can be achieved（P1）Exported with principal pressure（P2）Between break-make；Direction gearshift valve rod
（1）In valve body（I）Interior slip, pass through the first steel ball（7）Direction is shifted gears valve rod（1）Limit three positions, direction gearshift valve rod
（1）It is corresponding when moving outermost to fall back gear, neutral correspond to when middle, most on the inside of when correspond to forward gear；Gear gearshift valve rod（21）
In valve body（I）Interior slip, pass through the second steel ball（36）Gear gearshift valve rod is limited into three positions, gear gearshift valve rod（21）Draw
To corresponding gear during outermost, neutral correspond to when middle, corresponding two keep off during most inner side；Principal pressure exports（P2）With main pressure port
（P3）Pass through（Y1）Oil duct connects, and falls back pressure port（PF）Pressure port is kept off with falling back（F）Pass through（Y2）Oil duct connects, advance pressure
Mouthful（PF）With forward gear pressure port（F）Pass through（Y3）Oil duct connects.
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| CN201610409679.9A CN105889574B (en) | 2016-06-13 | 2016-06-13 | A kind of gearbox of dual-pulling rod type with cutting function manipulation valve |
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|---|---|---|---|
| CN201610409679.9A CN105889574B (en) | 2016-06-13 | 2016-06-13 | A kind of gearbox of dual-pulling rod type with cutting function manipulation valve |
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| CN105889574A CN105889574A (en) | 2016-08-24 |
| CN105889574B true CN105889574B (en) | 2018-04-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339416B (en) * | 2017-07-11 | 2022-10-14 | 山东临工工程机械有限公司 | Manual gear shifting control valve for gearbox |
| CN107795538B (en) * | 2017-12-01 | 2023-09-08 | 江苏徐工工程机械研究院有限公司 | Walking motor gear shifting valve, walking motor and engineering machinery |
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| JPS57146964A (en) * | 1981-03-05 | 1982-09-10 | Hitachi Constr Mach Co Ltd | Multi-direction switching valve |
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