CN104455388B - A kind of hydraulic speed-changing handles valve - Google Patents
A kind of hydraulic speed-changing handles valve Download PDFInfo
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- CN104455388B CN104455388B CN201410737667.XA CN201410737667A CN104455388B CN 104455388 B CN104455388 B CN 104455388B CN 201410737667 A CN201410737667 A CN 201410737667A CN 104455388 B CN104455388 B CN 104455388B
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- gear
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- gearshift
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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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
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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
- F16H61/24—Providing feel, e.g. to enable selection
Abstract
The invention belongs to speed change operating valve technical field, relate to a kind of hydraulic speed-changing and handle valve, it solve during hydraulic speed-changing handles valve shift process in prior art and vibrate greatly, the problem of gearshift irregularity.This hydraulic speed-changing handles the valve body that valve includes having gearshift valve pocket, valve body has oil-feed oil circuit, shift valve intracavity arranges spool of shifting gears in axial sliding, offer forward gear hydraulic fluid port the most successively along it on the inwall of gearshift valve pocket, oil-in and the two gear hydraulic fluid ports that advance, oil-in is connected with oil-feed oil circuit, oil-in includes oil-in one and the oil-in two being disposed adjacent, the inwall of gearshift valve pocket offers oil-feed groove one and the oil-feed groove two of annular respectively, offer footpath convex on the outer wall of gearshift spool and can keep off along two along one and oil-feed with the oil-feed gear that valve pocket cavity wall of shifting gears be sealed against, oil-feed gear keeps off along one and oil-feed and arranges along two intervals and form the oil storage tank of annular between.The present invention has the advantage that smooth gear shifting is good.
Description
Technical field
The invention belongs to speed change operating valve technical field, relate to a kind of hydraulic speed-changing and handle valve.
Background technology
At present, the loader power shifting shift control system of domestic project machinery is most
Employing machine liquid speed change operating valve.For hydraulic speed-changing of good performance handles valve, should
It is quick as far as possible that this meets shift process, to reduce the abrasion of friction original paper and to avoid power
Cut off.Meanwhile, in shift process should smooth transition as far as possible so that speed transition put down
Steady lubrication, does not has too high instantaneous acceleration, deceleration degree.Current hydraulic speed-changing handles valve pair
Stationarity in gearshift is made undesirable all the time, big at gearshift moment clutch contact impact,
Cause drive system part to bear excessive impact dynamic load lotus, cause corresponding driving parts
Earlier period damage, and make loader loading process occur jolting, poor safety performance.
Hydraulic speed-changing is also had now to handle valve by arranging trimmer valve in valve body, necessarily
Improve smooth gear shifting in degree, but due to conversion gear during, oil-feed oil
Road remains cut-off state with corresponding gear hydraulic fluid port, enters corresponding at gearshift spool
Gear positions moment, oil-feed oil circuit just can be connected with corresponding gear hydraulic fluid port, so cause
The oil pressure moment of gear hydraulic fluid port increases, and the most still there will be gearshift moment clutch contact
Impacting big problem, this hydraulic speed-changing is handled valve and still be there is not enough the asking of smooth gear shifting
Topic.
Summary of the invention
It is an object of the invention to there are the problems referred to above for existing technology, it is proposed that a kind of
Hydraulic speed-changing handles valve, and how the technical problem to be solved is in gearshift rapidly
Promote smooth gear shifting simultaneously.
The purpose of the present invention can be realized by following technical proposal: a kind of hydraulic speed-changing behaviour
Vertical valve, including having the valve body of gearshift valve pocket, described valve body has oil-feed oil circuit, described
Shift valve intracavity arranges spool of shifting gears in axial sliding, it is characterised in that described gearshift
Offer forward gear hydraulic fluid port, oil-in and advance the most successively along it on the inwall of valve pocket
Two gear hydraulic fluid ports, described oil-in is connected with oil-feed oil circuit, and described oil-in includes adjacent setting
The oil-in one put and oil-in two, offer annular on the inwall of gearshift valve pocket respectively
Oil-feed groove one and oil-feed groove two, described oil-feed groove one and oil-in one position phase
Corresponding and both connect all the time, described oil-feed groove two corresponding with oil-in two position and
Both connect all the time, the outer wall of described gearshift spool offers footpath convex and can with change
The oil-feed gear that gear valve pocket cavity wall is sealed against keeps off along two along one and oil-feed, described oil-feed gear edge
One and oil-feed gear arrange and formed between annular oil storage tank along two intervals, described
The width that oil-feed gear keeps off along two along one and oil-feed is respectively less than oil-feed groove one or oil-feed groove two
Width, when shift gears spool be positioned at forward gear position time, described oil-feed gear be positioned at along two
Between oil-in two and advance two gear hydraulic fluid ports, when shifting gears spool by forward gear position forward
Enter that two gears are put when sliding axially, oil-feed gear slips over oil-feed groove two along two and eventually settles at
Oil-feed groove one and entering between a gear hydraulic fluid port.
During forward gear is linked into advance two gear, as long as oil-feed gear is along an entirety more
Cross oil-feed groove one, oil-feed gear crosses oil-feed groove two along two entirety, the liquid in oil-in
Force feed just can enter the gap between gearshift spool and gearshift valve pocket by oil-feed groove two, and then
Flow to advance in two gear hydraulic fluid ports.Therefore, be suspended to advance in forward gear position two gears time,
And the most completely be linked into advance two gear before, oil-feed oil circuit just can with advance two gear hydraulic fluid ports,
The two gear oil return openings that advance are connected, and a part of fluid of oil-feed oil circuit then enters in oil storage tank,
Make oil-feed oil circuit oil pressure decline, wait that gearshift spool enters the position of two gears that advance.When changing
After gear spool enters two gears that advance, the two gear hydraulic fluid ports that advance are connected with oil-feed oil circuit and with front
Enter two gear oil return openings to close, in oil-feed oil circuit with the oil liquid pressure advanced in two gears gradually than
Example rises, and then arrives and sets pressure, and the adhesions of change speed gear box advance two gear clutches are
Ratio increases, and has good shock-absorbing capacity.Further, before entering due to gearshift spool
Entering the moment of two gears, oil-feed oil circuit hydraulic pressure reduces in advance, does not haves advance two gear hydraulic fluid port
Oil pressure moment increase situation, therefore gearshift moment clutch contact impact little, change
Gear ride comfort is high.
Two oil-ins are set, can be during gearshift, oil-in and each gear hydraulic fluid port
Between flow relatively big, make the oil pressure of oil-feed oil circuit quickly to reduce so that fast meeting
Smooth gear shifting can also be realized on the premise of quick change gear.The width kept off along two due to oil-feed is less than
Oil-feed groove one or the width of oil-feed groove two, therefore oil-feed gear all the time cannot be whole along two
Closure oil-feed groove two, can make the hydraulic oil of oil-feed oil circuit move quickly through advance two gear hydraulic fluid ports,
The two gear oil return openings that advance flow out, and make the oil pressure of oil-feed oil circuit quickly reduce, are linked at gear
When there is less oil liquid pressure, therefore can also on the premise of crash change of speed
Realize smooth gear shifting.
Simultaneously as the width that oil-feed keeps off along is respectively less than oil-feed groove one or oil-feed groove
The width of two, therefore oil-feed gear cannot all block oil-feed groove one, oil storage all the time along one
Groove is the groove of an annular, during forward gear is linked into advance two gear, as long as entering
Oil catch crosses oil-feed groove one along an entirety, and the meeting in oil-in is entered through oil-feed groove one
Enter in oil storage tank, shift valve core diameter can be made uniform to oil pressure, reduce clamping force, make
The smooth property in gearshift Shunping County is good.Meanwhile, oil storage tank also can store certain fluid, oil-in
Fluid enters in oil storage tank so that forward gear is changed to advance during two gears, oil-feed
Oil pressure in oil circuit reduces, and improves smooth gear shifting.
In above-mentioned hydraulic speed-changing handles valve, the width of described oil storage tank be equal to described in enter
Distance between oil groove one and oil-feed groove two.Owing to the width of oil storage tank is equal to oil-feed
Groove one and oil-feed keep off along the distance between two, and oil-feed gear keeps off along two along one and oil-feed
Width is respectively less than oil-feed groove one or the width of oil-feed groove two, spool of the most no matter shifting gears
It is positioned at any position, oil-feed groove one and oil-feed groove two to be impossible to be kept off along one by oil-feed
All stop along two with oil-feed gear so that the hydraulic pressure of oil-feed oil circuit during gearshift
Oil energy blood pressure lowering smoothly, reaches the purpose of smooth gear shifting.
In above-mentioned hydraulic speed-changing handles valve, the inwall of described gearshift valve pocket offers
Forward gear oil return opening, described forward gear hydraulic fluid port is positioned at oil-in one, forward gear returns
Between hydraulic fluid port, the cavity wall of gearshift valve pocket is further opened with forward gear groove, described before
Enter that a gear groove is corresponding with the position of forward gear hydraulic fluid port and both connect all the time, described
Before the outer wall of gearshift spool has footpath convex and can be sealed against with gearshift valve pocket cavity wall
Entering a gear gear edge, the width on described forward gear gear edge is less than the width of forward gear groove,
When spool of shifting gears is positioned at neutral gear position, described forward gear gear is recessed along being positioned at forward gear
Groove does not connects with forward gear hydraulic fluid port with the chien shih oil-in of oil-feed groove, works as shift valve
Core by neutral gear position march forward a gear put slide axially time, described forward gear gear is along sliding
Cross forward gear groove eventually settle at forward gear hydraulic fluid port and forward gear oil return opening it
Between.
When spool of shifting gears is positioned at neutral gear position, forward gear gear is along being resisted against forward gear
On shift valve cavity wall between hydraulic fluid port and oil-in and form sealing, therefore oil-feed oil circuit
Not connected with forward gear hydraulic fluid port, and forward gear hydraulic fluid port and forward gear oil return opening phase
Intercommunicated.
Forward gear groove is offered along the circumferencial direction of gearshift valve pocket, offers forward gear
Groove is advantageous in that: during neutral is linked into forward gear, if forward gear
Gear crosses forward gear groove along entirety, and the hydraulic oil in oil-in just can enter advance one
In gear groove, and then flow in forward gear hydraulic fluid port.Therefore, before neutral gear position is suspended to
When entering a gear, and before being linked into forward gear the most completely, oil-feed oil circuit just can be with advance
One gear hydraulic fluid port, forward gear oil return opening are connected, and make oil-feed oil circuit oil pressure decline, wait
Gearshift spool enters the position of forward gear.After gearshift spool enters forward gear, front
Enter a gear hydraulic fluid port be connected with oil-feed oil circuit and close with forward gear oil return opening, oil-feed oil
Rise with the oil liquid pressure gradually ratio in forward gear in road, then arrive and set pressure,
The adhesion of change speed gear box forward gear clutch is that ratio increases, and has good buffering
Performance.Further, owing to gearshift spool enters the moment of forward gear, oil-feed oil circuit hydraulic pressure
Reduce in advance, do not have the situation of the oil pressure moment increase of forward gear hydraulic fluid port, therefore
Little at gearshift moment clutch contact impact, smooth gear shifting.
Further, since the width on forward gear gear edge is less than the width of forward gear groove,
Therefore forward gear gear is along cannot all block whole forward gear groove all the time, before making
Enter one gear gear along slip over forward gear groove when there is bigger circulation area, make into
The hydraulic oil of oil oil circuit moves quickly through forward gear hydraulic fluid port, forward gear oil return opening flows out,
The oil pressure making oil-feed oil circuit quickly reduces, and has had less gear is linked into when
Oil liquid pressure, therefore can also realize smooth gear shifting on the premise of crash change of speed.
In above-mentioned hydraulic speed-changing handles valve, gearshift is stretched out in one end of described gearshift spool
Valve pocket, is provided with sealing ring, the periphery wall of described sealing ring in gearshift this end end sleeve of spool
With the inner wall sealing of gearshift valve pocket against, the internal perisporium of described sealing ring and gearshift spool
Outer wall is sealed against, and the inner side of described sealing ring is additionally provided with bearing, described forward gear
Keeping off along stepped, this forward gear gear is along including that gear along one and keeps off along two, described gear edge
One be located close to bearing side and gear along one diameter less than gear along two diameter.So set
Meter is advantageous in that: owing to gear is less along two diameters, be less than the aperture of gearshift valve pocket, because of
This is when gearshift spool is during being displaced outwardly, just in case occurring that gear produces along two with bearing
Collide with, cause and keep off the deformation along two, then owing to gear is along between two and shift valve cavity wall
There is gap, then also do not have and keep off along two phenomenons stuck with shift valve cavity wall,
Make shift process smooth and easy.If not keeping off along two, it is directly that gear is directly sent out with bearing along one
Raw collide with, then likely keep off along a deformation, the gear after deformation along one due to directly with
Shift valve cavity wall contacts, and will necessarily cause the phenomenon that jam, gearshift have some setbacks.
In above-mentioned hydraulic speed-changing handles valve, on the inwall in the middle part of described gearshift valve pocket also
Offering advance two gear oil return opening, described advance two keeps off hydraulic fluid port and two gear oil return opening phases of advancing
Adjacent setting.
In above-mentioned hydraulic speed-changing handles valve, the inwall of described gearshift valve pocket is also offered
Have retrogressing gear oil return opening, retreat gear hydraulic fluid port and oil-feed port, described retrogressing gear oil return opening, after
Move back gear hydraulic fluid port and oil-feed port to be axially sequentially arranged along gearshift valve pocket, described valve body is also offered
Having transition oil circuit, described oil-in one and oil-in two are all by transition oil circuit and oil-feed port
It is connected, shift valve cavity wall offers the retrogressing gear groove of annular, described retrogressing
Gear groove is corresponding with described retrogressing gear hydraulic fluid port position and both connect all the time.
In above-mentioned hydraulic speed-changing handles valve, the inner of described shift valve outer core has
The cambered outwards gear gear edge that retreats, footpath, the width of described retrogressing gear groove is more than retreating gear gear edge
Width, retreat gear gear along and oil-feed gear along two between shift valve outer core on have
Footpath cambered outwards advance two gear gear edge, described retrogressing gear gear edge and the two gear gears that advance are along equal energy
With gearshift valve pocket inner wall sealing against, when shift gears spool be positioned at neutral gear position time, described
Advance two gear gears along advancing between two gear oil return openings and oil-feed port and retreating gear gear edge
It is resisted against in the gearshift valve pocket cavity wall retreated between gear hydraulic fluid port and oil-feed port；When gearshift spool
By neutral gear position draw back gear put slide axially time, described retrogressing gear gear is along slipping over retrogressing
Gear groove is until retreating gear gear along being resisted against retrogressing gear hydraulic fluid port and retreating between gear oil return opening
In gearshift valve pocket cavity wall.
When spool of shifting gears is positioned at neutral gear position, the two gear gears that advance keep off back along being positioned at advance two
Between hydraulic fluid port and oiler, make oiler and do not connect with the two gear hydraulic fluid ports that advance；Retreat gear
Gear, along being resisted against in the gearshift valve pocket cavity wall retreated between gear hydraulic fluid port and oiler, makes into oil
Mouth and retrogressing keep off between hydraulic fluid port not connected.
During neutral is linked into retrogressing gear, as long as retreating gear gear to cross retrogressing along entirety
Gear groove, the hydraulic oil in oil-in just can enter in retrogressing gear groove, and then after flowing to
Move back in gear hydraulic fluid port.Therefore, when neutral gear position is suspended to retreat gear, and it is linked into the most completely
Before retreating gear, oil-feed oil circuit just can be connected with retrogressing gear hydraulic fluid port, retrogressing gear oil return opening,
Make oil-feed oil circuit oil pressure decline, wait that gearshift spool enters the position retreating gear.Work as gearshift
Spool enters after retreating gear, retreats gear hydraulic fluid port and is connected with oil-feed oil circuit and keeps off back with retreating
Hydraulic fluid port is closed, and rises, so with the oil liquid pressure gradually ratio retreated in gear in oil-feed oil circuit
Rear arrival sets pressure, and it is that ratio increases that change speed gear box retreats the adhesion of gear clutch,
There is good shock-absorbing capacity.Further, retreat, owing to gearshift spool enters, the moment kept off,
Oil-feed oil circuit hydraulic pressure reduces in advance, does not haves the oil pressure moment increase of retrogressing gear hydraulic fluid port
Situation, therefore little at gearshift moment clutch contact impact, smooth gear shifting is high.
Further, since retreat the width width less than forward gear groove on gear gear edge, because of
This retreats gear gear edge cannot all block whole forward gear groove all the time, and retrogressing can be made to keep off
Gear has bigger circulation area along the when of slipping over forward gear groove, makes oil-feed oil circuit
Hydraulic oil move quickly through forward gear hydraulic fluid port, forward gear oil return opening flow out, make oil-feed
The oil pressure of oil circuit quickly reduces, and has had less fluid pressure gear is linked into when
Power, therefore can also realize smooth gear shifting on the premise of crash change of speed.
In above-mentioned hydraulic speed-changing handles valve, the inwall of described gearshift valve pocket is opened respectively
Be provided with the retrogressing gear oil return groove and fuel feeding groove of annular, described retrogressing gear oil return groove with
The position retreating gear oil return opening is corresponding and both connect all the time, described fuel feeding groove with enter
Hydraulic fluid port position is corresponding and both connect all the time.
In above-mentioned hydraulic speed-changing handles valve, the outside of described sealing ring is provided with and valve
The end cap that body is fixedly connected with.Sealing ring prevents hydraulic oil from spilling gearshift valve pocket.
Compared with prior art, this hydraulic speed-changing manipulation valve has the advantage that
1, this hydraulic speed-changing manipulation valve is during gearshift, the fluid pressure in oil-feed oil circuit
Power can be reached and be flowed out by gear hydraulic fluid port and corresponding oil return opening, waits that gearshift spool enters
Corresponding gear positions, when spool of shifting gears is completely into corresponding gear, due to oil-feed oil circuit
Hydraulic pressure reduces in advance, does not haves the situation of the oil pressure moment increase retreating gear hydraulic fluid port, because of
This is little at gearshift moment clutch contact impact, smooth gear shifting.
2, this hydraulic speed-changing manipulation valve has good shock-absorbing capacity, people in shift process
Machine is effective, can solve speed change operating valve well and impact big, complete machine shake at shift process
Move weak effect big, man-machine, to problems such as the harmful effects such as speed change system, structural member.
3, this hydraulic speed-changing handles valve is to improve on the basis of existing valve body, improves
Low cost, but achieve the best effect, it is suitable for being widely popularized utilization.
Accompanying drawing explanation
Fig. 1 is structural representation during this hydraulic speed-changing manipulation valve neutral gear position.
Fig. 2 is that this hydraulic speed-changing handles the structural representation to forward gear process of the valve neutral
Figure.
Fig. 3 is structural representation during this hydraulic speed-changing manipulation valve forward gear position.
Fig. 4 be this hydraulic speed-changing handle valve be this hydraulic speed-changing handle valve neutral to advance one
The structural representation of gear process.
Fig. 5 is that this hydraulic speed-changing is handled valve and advanced two gears structural representation when putting.
Fig. 6 be this hydraulic speed-changing handle valve be this hydraulic speed-changing handle valve neutral to advance one
The structural representation of gear process.
Fig. 7 is the structural representation that this hydraulic speed-changing handles when valve retrogressing gear is put.
Fig. 8 is the structural representation of gearshift spool.
In figure:
1, valve body；10, oil-in；101, oil-in one；102, oil-in two；11、
Forward gear hydraulic fluid port；12, advance two gear hydraulic fluid ports；13, gear hydraulic fluid port is retreated；14, fuel feeding
Mouthful；15, gearshift valve pocket；16, off-load valve pocket；17, decompression valve pocket；
1a, oil-feed groove；1a1, oil-feed groove one；1a2, oil-feed groove two；1b、
Forward gear groove；1c, retrogressing gear groove；1d, fuel feeding groove；1e, retrogressing keep off back
Oil groove；
2, gearshift spool；2a1, oil-feed keep off along one；2a2, oil-feed keep off along two；21, front
Enter a gear gear edge；21a, gear are along one；21b, gear are along two；22, two gears that advance keep off edges；
23, gear gear edge is retreated；24, oil storage tank；
3, sealing ring；4, bearing；5, end cap；6, off-load spool；7, relief pressure valve cartridge；
8, relief spring；9, piston；
A, throttle orifice；B, oil-feed oil circuit；B1, oil circuit one；B2, oil circuit two；T1、
Forward gear oil return opening；T2, advance two gear oil return openings；T3, retrogressing gear oil return opening；c、
Transition oil circuit；D, throttling pore；P, oiler；Pw, torque-converters mouth
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, the technical side to the present invention
Case is further described, but the present invention is not limited to these embodiments.
As it is shown in figure 1, this hydraulic gear-shifting handles valve mainly includes that valve body 1, valve body 1 have
There are gearshift valve pocket 15, off-load valve pocket 16, decompression valve pocket 17.It is provided with in off-load valve pocket 16
Off-load spool 6.Valve body 1 is provided with oiler P, torque-converters mouth Pw and oil-feed oil circuit b,
Oil-feed path b includes oil circuit one b1 and oil circuit two b2, and oil circuit one b1 connects oiler P
With off-load valve pocket 16, oil circuit two b2 connects off-load valve pocket 16, oil-in 1 and enters
Hydraulic fluid port 2 102.It is provided with, in gearshift valve pocket 15, spool 2 of shifting gears in axial sliding, unloads
It is provided with off-load spool 6 in lotus valve pocket 16, in decompression valve pocket 17, is provided with relief pressure valve cartridge 7
With piston 9, valve body 1 inwall of piston 9 right-hand member offers throttling pore d, is subtracting
Offer throttle orifice a on pressure valve core 7, be provided with between relief pressure valve cartridge 7 and piston 9
Relief spring 8, the two ends of relief spring 8 bear against at relief pressure valve cartridge 7 and piston 9
On.Gearshift valve pocket 15 is stretched out in one end of gearshift spool 2, in gearshift this end end of spool 2
Also being arranged with sealing ring 3, the periphery wall of sealing ring 3 supports with gearshift valve pocket 15 inner wall sealing
Leaning on, the internal perisporium of sealing ring 3 is sealed against with the outer wall of gearshift spool 2, sealing ring 3
Inner side be additionally provided with bearing 4, the outside of sealing ring 3 is provided with and is fixedly connected with valve body 1
End cap 5.Sealing ring 3 prevents hydraulic oil from spilling gearshift valve pocket 15.
As shown in Figure 1, Figure 2 and Figure 3, the inwall of gearshift valve pocket 15 offers respectively
Oil-in 10, forward gear hydraulic fluid port 11 and forward gear oil return inlet T 1, oil-in 10
Being connected with oil-feed oil circuit b, oil-in 10 includes the oil-in 1 being disposed adjacent
With oil-in 2 102, forward gear hydraulic fluid port 11 is positioned at oil-in 1, forward gear
Between oil return inlet T 1, the cavity wall of gearshift valve pocket 15 is further opened with forward gear groove
1b, forward gear groove 1b are corresponding with the position of forward gear hydraulic fluid port 11 and both begin
Eventually connection, the outer wall of gearshift spool 2 has footpath convex and can be with gearshift valve pocket 15 cavity wall
The forward gear that is sealed against keeps off along 21, as shown in Figure 8, forward gear gear along 21 in
Stepped, this forward gear gear includes keeping off along a 21a and keeping off along two 21b along 21, keeps off edge
One 21a is located close to bearing 4 side and the gear diameter along a 21a less than keeping off along two 21b
Diameter.When spool 2 of shifting gears is positioned at neutral gear position, before forward gear gear is positioned at along 21
Enter a gear groove 1b and the chien shih oil-in 10 of oil-feed groove 1a and forward gear hydraulic fluid port
11 do not connect mutually, when gearshift spool 2 is put slid axially by the neutral gear position gear that marches forward
Time, forward gear gear slips over forward gear groove 1b along 21 and eventually settles at forward gear
Hydraulic fluid port 11 and forward gear oil return inlet T 1, forward gear gear is less than advance along the width of 21
The width of one gear groove 1b.The width kept off along 21 due to forward gear is less than forward gear
The width of groove, therefore forward gear gear cannot all block whole advance one all the time along 21
Gear groove, can make forward gear gear along 21 slip over forward gear groove when have bigger
Circulation area, make the hydraulic oil of oil-feed oil circuit b move quickly through forward gear hydraulic fluid port, front
Enter a gear oil return opening to flow out, make the oil pressure of oil-feed oil circuit b quickly reduce, be linked at gear
When there is less oil liquid pressure, therefore can also on the premise of crash change of speed
Realize smooth gear shifting.
The inwall of gearshift valve pocket 15 offers oil-feed groove one 1a1 of annular respectively
Corresponding with oil-in 1 position with oil-feed groove two 1a2, oil-feed groove one 1a1
And both connect all the time, oil-feed groove two 1a2 corresponding with oil-in 2 102 position and
Both connect all the time.Two oil-ins 10 are set, can be during gearshift, oil-in
Flow between 10 and individual gear hydraulic fluid port is relatively big, and the oil pressure making oil-feed oil circuit b can fast prompt drop
Low so that smooth gear shifting can also be realized on the premise of meeting crash change of speed.
As shown in Fig. 3, Fig. 4, Fig. 5, the inwall in the middle part of gearshift valve pocket 15 is opened respectively
It is provided with advance two gear hydraulic fluid port 12 and two gear oil return inlet T 2 of advancing, two gear hydraulic fluid port 12 Hes of advancing
Two gear oil return inlet T 2 of advancing are disposed adjacent, and the outer wall of gearshift spool 2 offer footpath outside
Oil-feed gear that is convex and that can be sealed against with gearshift valve pocket 15 cavity wall keeps off edge along a 2a1 and oil-feed
Two 2a2, when spool 2 of shifting gears is positioned at forward gear position, oil-feed keeps off along two 2a2 positions
Between oil-in 2 102 and advance two gear hydraulic fluid ports 12, when gearshift spool 2 is by advance one
Gear is put two gears that march forward and is put when sliding axially, and it is recessed that oil-feed gear slips over oil-feed along a 2a1
Groove one 1a1 eventually settles between oil-feed groove one 1a1 and forward gear hydraulic fluid port, oil-feed
Gear slips over oil-feed groove two 1a2 along two 2a2 and eventually settles at oil-feed groove one 1a1 and enter
Between oil groove two 1a2.Oil-feed gear keeps off along a 2a1 and oil-feed and arranging along two 2a2 intervals
And form annular oil storage tank 24 between, and the width of oil storage tank 24 is equal to oil-feed
Distance between groove one 1a1 and oil-feed groove two 1a2.Oil-feed gear along a 2a1 and enters
Oil catch is respectively less than oil-feed groove one 1a1's or oil-feed groove two 1a2 along the width of two 2a2
Width.During forward gear is linked into advance two gear, as long as oil-feed keeps off along a 2a1
Entirety crosses oil-feed groove one 1a1, oil-feed gear crosses oil-feed groove two along two 2a2 entirety
1a2, the hydraulic oil in oil-in 10 just can be through oil-feed groove one 1a1, oil-feed groove
Two 1a2 enter the gap between gearshift spool 2 and gearshift valve pocket 15, and then flow to advance
In two gear hydraulic fluid ports, in making oil-feed oil circuit b, hydraulic fluid pressure reduces in advance, to gearshift spool
2 entrance advance two gears impact little when putting, smooth gear shifting is good.
As shown in Fig. 1, Fig. 6 and Fig. 7, the inwall of gearshift valve pocket 15 offers retrogressing
Gear oil return inlet T 3, retreat gear hydraulic fluid port 13 and oil-feed port 14, retreat gear oil return inlet T 3, after
Move back gear hydraulic fluid port 13 and oil-feed port 14 to be axially sequentially arranged along gearshift valve pocket 15, valve body 1
On be further opened with transition oil circuit c, oil-in 1 and oil-in 2 102 and all passed through
Cross oil circuit c to be connected with oil-feed port 14, gearshift valve pocket 15 inwall offers annular
Retrogressing gear groove 1c, retreat gear groove 1c with retreat keep off hydraulic fluid port 13 position corresponding and
Both connect all the time.The inner of gearshift spool 2 outer wall has the cambered outwards gear that retreats in footpath and keeps off
Along 23, the width retreating gear groove 1c is more than the width that retrogressing gear is along 23, is retreating
It is outside that gear gear has footpath along 23 and oil-feed gear along gearshift spool 2 outer wall between two 2a2
Convex advance two gear gear is along 22, and retreating gear gear all can be with along 22 with the two gear gears that advance along 23
Gearshift valve pocket 15 inner wall sealing against, when shift gears spool 2 be positioned at neutral gear position time, front
Enter two gear gears advancing between two gear oil return inlet T 2 and oil-feed port 14 along 22 and retreating
Gear gear is resisted against, along 23, the gearshift valve pocket 15 retreated between gear hydraulic fluid port 13 and oil-feed port 14
In cavity wall；When shift gears spool 2 by neutral gear position draw back gear put slide axially time, after
Move back gear gear and slip over retrogressing gear groove 1c along 23 until retreating gear gear to be resisted against retrogressing gear along 23
In gearshift valve pocket 15 cavity wall between hydraulic fluid port 13 and retrogressing gear oil return inlet T 3.Gearshift valve pocket
Retrogressing gear oil return groove 1e and the fuel feeding groove of annular is offered the most respectively on the inwall of 15
1d, retreat gear oil return groove 1e with retreat keep off oil return inlet T 3 position corresponding and both
All the time connecting, fuel feeding groove 1d is corresponding with oil-feed port 14 position and both connect all the time.
During neutral is linked into retrogressing gear, as long as retreating gear gear to cross retrogressing gear along 23 entirety
Groove 1c, the hydraulic oil in oil-in 10 just can enter in retrogressing gear groove 1c, and then
Flow to retreat in gear hydraulic fluid port 13.In making oil-feed oil circuit b, hydraulic fluid pressure reduces in advance, arrives
Gearshift spool 2 entrance retrogressing gear impacts little when putting, smooth gear shifting is good.
This hydraulic speed-changing handles the operation principle of valve:
As it is shown in figure 1, handle valve when entering hydraulic speed-changing from the hydraulic oil of hydraulic pump
During oiler P, wherein a road enters oil circuit two through oil circuit one b1 by lotus spool 6
B2, when spool 2 of shifting gears is in neutral gear position, forward gear gear is resisted against advance along 21
One keeps off on gearshift valve pocket 15 inwall between hydraulic fluid port 11 and oil-in 10 and forms sealing,
Therefore oil circuit two b2 is not connected with forward gear hydraulic fluid port 11, and forward gear hydraulic fluid port 11
It is interconnected with forward gear oil return inlet T 1.Further, oil circuit two b2 and other gear oil
Mouth is closed, and each gear hydraulic fluid port communicates with respective oil return opening.Meanwhile, the liquid on oil circuit two b2
Force feed enters piston 9 right-hand member through throttling pore d, and action of hydraulic force is at piston 9 right-hand member；
Enter from another road hydraulic oil of oiler P throttle orifice a on relief pressure valve cartridge 7
The left end of relief pressure valve cartridge 7, action of hydraulic force at the left end of relief pressure valve cartridge 7, this hydraulic coupling
Make relief pressure valve cartridge 7 move right, open the passage of oiler P and torque-converters mouth Pw,
The Pw mouth entered from the hydraulic oil of oiler P.Owing to the cross section ratio of piston 9 subtracts
The cross section of pressure valve core 7 is big, thus under identical hydraulic pressure effect, suffered by piston 9
The hydraulic action to the right suffered by the force rate relief pressure valve cartridge of hydraulic action to the left 7 that arrives is big,
In the process, piston 9 promote relief spring 8 to left movement, oiler P pressure with
Rising, to pass through owing to entering into the right-hand member of piston 9 from the hydraulic oil of oiler P
Throttling pore d, thus in piston 9 motor process to the left, oiler P hydraulic oil pressure
The hydraulic coupling that power enters piston 9 right-hand member than through throttling pore d is high, makes oiler P
Hydraulic coupling ratio rise, when piston 9 moves to defined position to the left, oiler P
Hydraulic coupling reaches setting value.
When handling speed change operating valve, gearshift spool 2 is made to be manipulated to advance one from neutral gear position
When gear is put, as in figure 2 it is shown, during neutral to forward gear, forward gear
Gear slips over forward gear groove along 21 entirety, from the hydraulic oil of oiler P through oil circuit
One b1, oil circuit two b2, forward gear hydraulic fluid port 11 communicate with forward gear back oil road T1,
Oiler P, oil circuit one b1, the hydraulic fluid pressure of oil circuit two b2 decline, and wait gearshift
Spool enters into the position of forward gear.After gearshift spool enters into forward gear position,
As it is shown on figure 3, from oiler P hydraulic oil through oil circuit one b1, oil circuit two b2,
Forward gear hydraulic fluid port 11, forward gear hydraulic fluid port 11 closes with forward gear oil return inlet T 1,
Other gear hydraulic fluid port communicates with corresponding oil return opening.Now the hydraulic oil of oiler P realizes same
Ratio the same during neutral gear position rises, and then arrives and sets pressure, meanwhile advances
The one gear hydraulic fluid port 11 hydraulic coupling as oiler P holding, thus change speed gear box forward gear
The adhesion of clutch is also that ratio increases, and has good shock-absorbing capacity.Further,
Owing to gearshift spool 2 enters the moment of forward gear, oil-feed oil circuit b hydraulic pressure reduces in advance,
Do not have the situation of the oil pressure moment increase of forward gear hydraulic fluid port 11, therefore in gearshift wink
Between clutch contact impact little, smooth gear shifting.
Handle speed change operating valve gearshift spool 2 to shift gears between any two gears, there is manipulation
Speed change operating valve gearshift spool 2 shifts to, from neutral, the operation principle that forward gear is same,
Consolidate literary composition and no longer do burden description.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Claims (9)
1. hydraulic speed-changing handles a valve, including having the valve body (1) of gearshift valve pocket (15),
Described valve body (1) has oil-feed oil circuit (b), arranges energy in described gearshift valve pocket (15)
Shift gears in axial sliding spool (2), it is characterised in that described gearshift valve pocket (15)
Offer the most successively along it on inwall forward gear hydraulic fluid port (11), oil-in (10) and
Advance two gears hydraulic fluid port (12), and described oil-in (10) is connected with oil-feed oil circuit (b),
Described oil-in (10) includes oil-in one (101) and the oil-in two being disposed adjacent
(102), the inwall of gearshift valve pocket (15) offers respectively the oil-feed groove of annular
One (1a1) and oil-feed groove two (1a2), described oil-feed groove one (1a1) and oil-feed
Mouth one (101) position is corresponding and both connect all the time, described oil-feed groove two (1a2)
Corresponding with oil-in two (102) position and both connect all the time, described gearshift spool (2)
Outer wall on offer footpath convex and can with gearshift valve pocket (15) cavity wall be sealed against
Oil-feed gear keeps off along two (2a2) along one (2a1) and oil-feed, and described oil-feed keeps off along one (2a1)
With oil-feed gear arranges along two (2a2) interval and forms the oil storage tank of annular between
(24), described oil-feed gear keeps off the least along the width of two (2a2) along one (2a1) and oil-feed
In oil-feed groove one (1a1) or the width of oil-feed groove two (1a2), when gearshift spool
(2), when being positioned at forward gear position, described oil-feed gear is positioned at oil-in along two (2a2)
Between two (102) and advance two gear hydraulic fluid port (12), when gearshift spool (2) is by advancing
One gear is put two gears that march forward and is put when sliding axially, and described oil-feed gear is sliding along two (2a2)
Cross oil-feed groove two (1a2) and eventually settle at oil-feed groove one (1a1) and oil-feed groove
Between two (1a2), described oil-feed gear slip over oil-feed groove one (1a1) along one (2a1)
Eventually settle at oil-feed groove one (1a1) and enter between a gear hydraulic fluid port (11).
Hydraulic speed-changing the most according to claim 1 handles valve, it is characterised in that institute
State the width of oil storage tank (24) equal to described oil-feed groove one (1a1) and oil-feed groove two
(1a2) distance between.
Hydraulic speed-changing the most according to claim 2 handles valve, it is characterised in that institute
State and offer forward gear oil return opening (T1) on the inwall of gearshift valve pocket (15), described before
Enter a gear hydraulic fluid port (11) and be positioned at oil-in one (101), forward gear oil return opening (T1)
Between, the cavity wall of gearshift valve pocket (15) is further opened with forward gear groove (1b),
Described forward gear groove (1b) corresponding with the position of forward gear hydraulic fluid port (11) and
Both connect all the time, the outer wall of described gearshift spool (2) have footpath convex and can with change
The forward gear gear that gear valve pocket (15) cavity wall is sealed against is along (21), described forward gear
The width of gear edge (21) is less than the width of forward gear groove (1b), when gearshift spool
(2), when being positioned at neutral gear position, it is recessed that described forward gear gear is positioned at forward gear along (21)
The chien shih oil-in (10) of groove (1b) and oil-feed groove (1a) and forward gear hydraulic fluid port
(11) do not connect mutually, when gearshift spool (2) is marched forward a gear position axis by neutral gear position
In time sliding, described forward gear gear slips over forward gear groove (1b) along (21)
Rest on eventually between forward gear hydraulic fluid port (11) and forward gear oil return opening (T1).
Hydraulic speed-changing the most according to claim 3 handles valve, it is characterised in that institute
Gearshift valve pocket (15) is stretched out in the one end stating gearshift spool (2), should in gearshift spool (2)
End end sleeve is provided with sealing ring (3), the periphery wall of described sealing ring (3) and gearshift valve pocket
(15) inner wall sealing is against, the internal perisporium of described sealing ring (3) and gearshift spool (2)
Outer wall be sealed against, the inner side of described sealing ring (3) is additionally provided with bearing (4), institute
Stating forward gear gear stepped along (21), this forward gear gear includes gear along (21)
Along one (21a) and gear along two (21b), described gear is located close to bearing along one (21a)
(4) side and gear along the diameter of one (21a) less than gear along the diameter of two (21b).
Hydraulic speed-changing the most according to claim 4 handles valve, it is characterised in that institute
State and be further opened with, on the inwall at gearshift valve pocket (15) middle part, the two gear oil return openings (T2) that advance,
Described advance two keeps off hydraulic fluid port (12) and two gears oil return opening (T2) that advance are disposed adjacent.
Hydraulic speed-changing the most according to claim 5 handles valve, it is characterised in that institute
State and be further opened with on the inwall of gearshift valve pocket (15) retreating gear oil return opening (T3), retreating gear
Hydraulic fluid port (13) and oil-feed port (14), described retrogressing keeps off oil return opening (T3), retrogressing gear oil
Mouth (13) and oil-feed port (14) are axially sequentially arranged along gearshift valve pocket (15), described
Transition oil circuit (c) it is further opened with, described oil-in one (101) and entering on valve body (1)
Hydraulic fluid port two (102) is all connected with oil-feed port (14) by transition oil circuit (c),
Retrogressing gear groove (1c) of annular, described retrogressing is offered on gearshift valve pocket (15) inwall
Gear groove (1c) is corresponding with described retrogressing gear hydraulic fluid port (13) position and both connect all the time
Logical.
Hydraulic speed-changing the most according to claim 6 handles valve, it is characterised in that institute
The inner stating gearshift spool (2) outer wall has the cambered outwards gear gear that retreats in footpath along (23),
The described width retreating gear groove (1c) is more than the width retreating gear gear along (23),
Retreat gear gear to keep off along the gearshift spool (2) between two (2a2) outward along (23) and oil-feed
There is on wall footpath cambered outwards advance two gear keep off along (22), described retrogressing gear gear edge (23)
With advance two gear gear along (22) all can with gearshift valve pocket (15) inner wall sealing against,
When spool (2) of shifting gears is positioned at neutral gear position, described advance two gear gear is positioned at along (22)
Advance between two gears oil return opening (T2) and oil-feed port (14) and retreat gear and keep off along (23)
It is resisted against the gearshift valve pocket (15) retreated between gear hydraulic fluid port (13) and oil-feed port (14)
In cavity wall；When shift gears spool (2) by neutral gear position draw back gear put slide axially time,
Described gear gear edge (23) that retreats slips over retrogressing gear groove (1c) until retreating gear and keeping off along (23)
It is resisted against the gearshift valve pocket retreating gear hydraulic fluid port (13) and retreating between gear oil return opening (T3)
(15) in cavity wall.
Hydraulic speed-changing the most according to claim 7 handles valve, it is characterised in that institute
State retrogressing gear oil return groove (1e) offering annular on the inwall of gearshift valve pocket (15) respectively
With fuel feeding groove (1d), described gear oil return groove (1e) that retreats keeps off oil return opening (T3) with retrogressing
Position corresponding and both connect all the time, described fuel feeding groove (1d) and oil-feed port (14)
Position is corresponding and both connect all the time.
9. handle valve according to the hydraulic speed-changing described in any one in claim 4 to 8,
It is characterized in that, the outside of described sealing ring (3) is provided with and is fixedly connected with valve body (1)
End cap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737667.XA CN104455388B (en) | 2014-12-06 | 2014-12-06 | A kind of hydraulic speed-changing handles valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737667.XA CN104455388B (en) | 2014-12-06 | 2014-12-06 | A kind of hydraulic speed-changing handles valve |
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| Publication Number | Publication Date |
|---|---|
| CN104455388A CN104455388A (en) | 2015-03-25 |
| CN104455388B true CN104455388B (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410737667.XA Active CN104455388B (en) | 2014-12-06 | 2014-12-06 | A kind of hydraulic speed-changing handles valve |
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| CN (1) | CN104455388B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007338B (en) * | 2021-03-18 | 2022-09-30 | 宁波市鄞州方程液压件有限公司 | Steady gear shifting operating valve |
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| CN104455388A (en) | 2015-03-25 |
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