CN206874805U - Gear shifting hydraulic control system and gearbox - Google Patents
Gear shifting hydraulic control system and gearbox Download PDFInfo
- Publication number
- CN206874805U CN206874805U CN201720585746.2U CN201720585746U CN206874805U CN 206874805 U CN206874805 U CN 206874805U CN 201720585746 U CN201720585746 U CN 201720585746U CN 206874805 U CN206874805 U CN 206874805U
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- gearshift
- valve
- gear
- hydraulic
- oil
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Abstract
The utility model discloses a kind of gear shifting hydraulic control system, including the fuel tank for providing hydraulic oil, the one group of selector fork driven by the hydraulic oil, the gear shift guiding valve equal with the selector fork quantity and the magnetic valve for controlling each gear shift guiding valve, same root output shaft are provided with gear hydraulic interlock structure；The hydraulic oil in working connection is selectively inputted to the first gear shift working connection and the second gear shift working connection in the plunger shaft of selector fork respectively；For switching the oil circuit change-over pilot valve of the first gear shift working connection and the second gear shift working connection.The beneficial effects of the utility model are mainly reflected in：Hydraulic interlock function with same root output shaft gear, only have a gear to combine on same root output shaft, avoid the gearbox caused by magnetic valve malfunctions and damage.
Description
Technical field
It the utility model is related to automobile gearbox technical field, specifically the gearshift liquid applied to the double clutch gearboxes of wet type
Pressure control system.
Background technology
Wet-type dual-clutch refers to that double clutch is small one and large one two groups of multidisc clutches being co-axially mounted together, it
Be all installed in a closed oil pocket full of hydraulic oil.Therefore wet clutch structure has more preferable regulating power,
Bigger moment of torsion can be transmitted；Meanwhile and due to can be cooled down and be lubricated using hydraulic oil, therefore wear smaller and scattered
Heat is good.For these reasons, wet-type dual-clutch is suitable to automobile manufacturing field by extensive fortune.
As shown in Chinese patent CN201410588154.7 and CN201510362821.4, in the prior art, wet type it is double from
Closing the hydraulic control system of gearbox needs, by engine-driven oil pump, storage to be drawn from the fuel tank as oil sources
Hydraulic oil provides oil pressure.Although the hydraulic control system can realize the work of the double clutch gearboxes of wet type, control mode is held
Easily there is the problems such as main oil pressure fluctuation is larger and oil pressure cntrol is unstable, the gearbox of such hydraulic control system control carries
After vehicle, it may appear that shift shock and pause and transition in rhythm or melody, be unfavorable for driving the driving impression of people.Itself main reason is that：Control gearshift
The ride comfort of shift fork motion is more difficult, and this is due to that the fluctuation of main oil pressure can bring pilot control oil circuit in gearshift hydraulic control system
Impact, due to the impact and fluctuation of guide's oil circuit, makes the gearshift guiding valve of solenoid valve control in system be sent out with the fluctuation of oil pressure
Raw play, makes to occur fluctuating and impact by the pressure oil for guiding valve of shifting gears.In addition, do not have in existing gearshift hydraulic control system
Interlocking structure, have on same root output shaft while form the risk of two gears.
Utility model content
The purpose of this utility model is to overcome the shortcomings of the prior art, there is provided a kind of stabilization, safety be applied to it is wet
The gearshift hydraulic control system of the double clutch gearboxes of formula.
The purpose of this utility model is achieved through the following technical solutions：
One kind gearshift hydraulic control system, including for providing the fuel tank of hydraulic oil, and by hydraulic oil from fuel tank it is defeated
The working connection gone out, and the one group of selector fork driven by the hydraulic oil, the selector fork be used for optionally through
Corresponding synchronizer is synchronous with shifting gear to form gear, and the shifting gear includes seven forward gears and a reverse gear tooth
Wheel, its odd number shelves gear are arranged on same root odd number shelves output shaft, and its even number shelves gear and reverse gear arrangement of gears are another
On root even gear output shaft, including：
The gearshift guiding valve equal with the selector fork quantity and the magnetic valve for controlling each gearshift guiding valve, it is same
Root output shaft is provided with gear hydraulic interlock structure；
The hydraulic oil in working connection is selectively inputted to the first main oil of gearshift in the plunger shaft of selector fork respectively
Road and the second gearshift working connection；
For switching the oil circuit change-over pilot valve of the first gearshift working connection and the second gearshift working connection.
Preferably, four selector forks and four gearshift guiding valves corresponding thereto are included, every two pairs of gearshifts are slided
Valve and selector fork act on same root output shaft, and each gearshift guiding valve is respectively provided with the electromagnetism of a control its valve element movement
Valve, and there is a guide end and spring terminal, the guide end is connected by corresponding magnetic valve with the fuel tank, the hydraulic pressure
Interlocking structure is to be arranged on two hydraulic interlock oil circuits acted between the guiding valve of shifting gears on same root output shaft, the hydraulic pressure
The one end for interlocking oil circuit connects the guide end of a gearshift guiding valve wherein, spring of the other end connection in another gearshift guiding valve
End.
Preferably, a branch is additionally provided with the working connection, is guide's oil circuit, the hydraulic oil in the working connection passes through one
Guide's oil pressure cntrol guiding valve enters to the guide's oil circuit, and guide's oil pressure cntrol guiding valve is using rear end feedback self-balancing knot
Structure, the guide end of each gearshift guiding valve of guide's oil circuit connection.
Preferably, small filter screen and throttle orifice are provided between the guide end of the guide's oil circuit and guiding valve of shifting gears.
Preferably, the oil circuit change-over pilot valve passes through a solenoid valve control.
Preferably, the oil circuit change-over pilot valve is connected with a counterbalance valve.
The utility model discloses a kind of gearshift hydraulic control system, including：For providing the fuel tank of hydraulic oil；By hydraulic pressure
The working connection that oil exports from fuel tank, the first gearshift working connection and the second gearshift working connection；For switching the first gearshift working connection
With the oil circuit change-over pilot valve of the second gearshift working connection；The first gearshift working connection and the second gearshift working connection pass through selectively
Being communicated with gearshift guiding valve makes hydraulic oil selectively input to the plunger shaft of selector fork；Each selector fork can be selectively
Formation gear synchronous with shifting gear, the shifting gear include seven forward gears and a reversing shelves gear, its odd number
Shelves gear is arranged on same root odd number shelves output shaft, and its even number shelves gear and reverse gear arrangement of gears are defeated in another even gear
On shaft；Act between the odd number shelves output shaft or the gearshift guiding valve of two selector forks on even gear output shaft
Provided with gear hydraulic interlock structure；The gearshift guiding valve has a guide end and spring terminal, and the guide end passes through guide oil
Road connects with the fuel tank, and the hydraulic interlock structure is hydraulic interlock oil circuit, and one end connection of the hydraulic interlock oil circuit exists
The guide end of one of gearshift guiding valve, spring terminal of the other end connection in another gearshift guiding valve.
Preferably, each gearshift guiding valve is respectively provided with the movement of its valve element of a control and determines the electromagnetism of its openings of sizes
Valve, and the guide's oil circuit at its guide end is connected by small a filter screen and throttle orifice with guide's oil pressure cntrol guiding valve.
Preferably, there is guide's oil pressure cntrol guiding valve rear end to feed back self-balance structure, pass through the hydraulic pressure at its guide end
The spring force of power and spring terminal reaches dynamic equilibrium, and being formed by the size of regulating slide valve and valve body mating holes opening has stabilization
The hydraulic oil of pressure, the hydraulic oil lead to the guide end of the gearshift guiding valve by guide's oil circuit.
The utility model further discloses a kind of gearbox, including gearshift hydraulic control system described above.
The beneficial effects of the utility model are mainly reflected in：
1st, the utility model guide oil pressure cntrol guiding valve can provide stable pilot pressure, guide for whole shifting system
The size of pressure will not be fluctuated because of the fluctuation of main oil pressure, and the shifting of gearshift guiding valve can be smoothly promoted in the presence of magnetic valve
Dynamic, control hydraulic oil smoothly promotes selector fork to move, and has good smooth gear shifting；
2nd, the utility model has the hydraulic interlock function of same root output shaft gear, there was only one on same root output shaft
Individual gear combines, and avoids the gearbox caused by magnetic valve malfunction causes to form two gears on same root output shaft and damages
It is bad；
3rd, the magnetic valve of the utility model gearshift guiding valve and the magnetic valve of oil circuit change-over pilot valve are same model, and gearshift is slided
Valve size and specification are that same model, the model specification of spring are consistent, therefore have good interchangeability.
Brief description of the drawings
Technical solutions of the utility model are described further below in conjunction with the accompanying drawings：
Fig. 1：The hydraulic diagram of the utility model gearbox shifting hydraulic control system；
Wherein：The selector forks of F1- first, the selector forks of F2- second, the selector forks of F3- the 3rd, the selector forks of F4- the 4th；
The gearshift guiding valves of 1- first, the gearshift guiding valves of 2- second, the gearshift guiding valves of 3- the 3rd, the gearshift guiding valves of 4- the 4th, 5- oil circuit change-over pilot valves, 6-
Guide's oil pressure cntrol guiding valve, 7- hydraulic interlock oil circuits, 8- counterbalance valves；The magnetic valves of S1- first, S2- second solenoid valves, S3- the 3rd
Magnetic valve, the magnetic valves of S4- the 4th, the magnetic valves of S5- the 5th；A- working connections, b- first shift gears working connection, and c- second shifts gears main oil
Road, d- guide's oil circuits.
Embodiment
The utility model is described in detail below with reference to embodiment shown in the drawings.But these embodiment party
Formula is not limited to the utility model, structure that one of ordinary skill in the art is made according to these embodiments, method or
Conversion functionally is all contained in the scope of protection of the utility model.
As shown in figure 1, the utility model discloses a kind of gearshift hydraulic control system, including：For providing hydraulic oil
Fuel tank；The working connection a that hydraulic oil is exported from fuel tank, and the first gearshift working connection b and the second gearshift working connection c；Have one
The oil circuit change-over pilot valve 5 controlled by magnetic valve S5, the oil circuit change-over pilot valve 5, which optionally can switch working connection a, to be connected
Logical first gearshift working connection b or the second gearshift working connection c.The size of magnetic valve S5 its electric current of TCU Linear Controls.It is described
Oil circuit change-over pilot valve 5 is connected with a counterbalance valve 8, after ensure that working connection switching, has liquid all the time in the oil duct of no fluid supply
Force feed is present, and oil pressure is quickly established beneficial to whole hydraulic gear-shifting control system.
The first gearshift working connection b and the second gearshift working connection c make hydraulic pressure by being selectively communicated with gearshift guiding valve
Oil is selectively inputted to the plunger shaft of selector fork, and each selector fork can formation shelves selectively synchronous with shifting gear
Position, the shifting gear include seven forward gears and a reversing shelves gear, and it is strange that its odd number shelves gear is arranged in same root
On several grades of output shafts, its even number shelves gear and reverse gear arrangement of gears are on another even gear output shaft.
Specifically, the utility model preferred embodiment has four selector forks, respectively the first selector fork F1, second
Selector fork F2, the 3rd selector fork F3, the 4th selector fork F4.Wherein, the first selector fork F1 is used to control and corresponded to synchronously
Device is synchronous with 1 shelves gear or 5 shelves gears to form gear, and the second selector fork F2 is used to control corresponding synchronizer and 3 shelves gears or 7
Shelves gear synchronously forms gear, and the 3rd selector fork F3 is used to control corresponding synchronizer is synchronous with R shelves gears or 4 shelves gears to be formed
Gear, the 4th selector fork F4 are used to control corresponding synchronizer is synchronous with 2 shelves gears or 6 shelves gears to form gear.Each gearshift
Shift fork controls by a gearshift guiding valve, the respectively first gearshift gearshift gearshift guiding valve the 3, the 4th of guiding valve the 2, the 3rd of guiding valve 1, second
Gearshift guiding valve 4.For example, when the hydraulic oil in working connection by second gearshift guiding valve 2 enter to control 3 shelves gear gears piston
During intracavitary, promote the corresponding synchronizer of the second selector fork F2 controls and 3 shelves gears are synchronous with step gear shifting forms gear.
Each gearshift guiding valve is respectively provided with a guide end and spring terminal, and the guide end is by controlling guide's oil circuit
Magnetic valve connects with the fuel tank.Preferably, it is mobile and true to be respectively provided with a control its valve element for each gearshift guiding valve 1,2,3,4
Magnetic valve S1, S2, S3, S4 of its fixed openings of sizes, and the guide's oil circuit at its guide end connects with guide's oil pressure cntrol guiding valve 6
It is logical.Act between the odd number shelves output shaft or the gearshift guiding valve of two selector forks on even gear output shaft and be provided with
Gear hydraulic interlock structure；The hydraulic interlock structure is hydraulic interlock oil circuit, and one end connection of the hydraulic interlock oil circuit exists
The guide end of one of gearshift guiding valve, spring terminal of the other end connection in another gearshift guiding valve.Such as：Exported with odd number shelves
What axle was engaged is the first gearshift guiding valve 1 and the second gearshift guiding valve 2, is that a hydraulic pressure is mutual between the two with hydraulic interlock structure
Oil circuit 7 is locked, one end connection of the hydraulic interlock oil circuit 7 is changed in the guide end of the first gearshift guiding valve 1, other end connection second
Keep off the spring terminal of guiding valve 2.Equally there is hydraulic interlock structure between the gearshift guiding valve of mating on even gear output shaft.
A branch is additionally provided with the working connection, is guide's oil circuit d, the hydraulic oil in the working connection passes through a guide oil
Pressure spool control valve 6 enters to the guide's oil circuit d, and guide's oil pressure cntrol guiding valve 6 is using rear end feedback self-balance structure, institute
State the guide end of each gearshift guiding valve of guide's oil circuit connection.Small filter screen and section are provided between the guide's oil circuit and guide end
Discharge orifice.
Specially：Pressure oil of the working connection a pressure oil after guide's oil pressure cntrol guiding valve 6 decompression is the elder generation of the valve
Lead end and pressure oil is provided, because its valve element has certain cross-sectional area, one is formed with acting on the pressure oil at guide end of the valve
Fixed pressure, promote valve element to overcome the spring force of the other end, the power interaction at both ends, reach stable dynamic equilibrium
Relation.When working connection a pressure rise, the hydraulic fluid flow rate increase of guide's oil pressure cntrol guiding valve 6 is flowed through, it is voltage-controlled through guide oil
Pressure after guiding valve 6 processed also can be with rise, and now, the guide's oil pressure for acting on guide's oil pressure cntrol guiding valve 6 equally raises,
In the presence of guide oil, guide's oil pressure cntrol guiding valve 6 will promote valve element to be moved to spring terminal in the presence of hydraulic coupling, this
When, the hydraulic oil aperture area into guide's oil pressure cntrol guiding valve 6 reduces, and the hydraulic fluid flow rate for flowing through the valve is reduced, by this
Hydraulic fluid pressure after valve reduces, and the guide's oil pressure for acting on the valve reduces, and under spring force, valve element is to phase negative side
To movement, the hydraulic oil area increase of the valve element is flowed through, flows through the pressure oil pressure all-the-time stable after the valve in a dynamic
Balance.It is similar when its working method is to rise when working connection pressure reduces.
The course of work of the utility model preferred embodiment is briefly described below.
Fuel tank by working connection a fuel feeding, to first change respectively by the position for controlling oil circuit change-over pilot valve 5 through the 5th magnetic valve S5
Keep off the gearshift working connection c fuel feeding of working connection b and second, when controlling the magnetic valve of oil passage change-over valve there is no electric current, now first
Gearshift working connection b can be 4 grades, 5 grades, 6 grades, 7 grades of this four gear fuel feeding, as the magnetic valve S5 of control oil circuit change-over pilot valve 5
When reaching certain electric current, now oil circuit change-over pilot valve 5 switch oil circuit, now second gearshift working connection c to R shelves, 1 grade, 2 grades, 3
This four gear fuel feeding of shelves.
Working connection a hydraulic oil after guide's oil pressure cntrol guiding valve 6 be respectively：First gearshift guiding valve 1, the second gearshift are slided
Valve 2, the 3rd gearshift guiding valve 3, the 4th gearshift guiding valve 4, oil circuit change-over pilot valve 5 provides stable guide oil, is oil circuit change-over pilot valve 5
Oil circuit smooth-going switching provide guarantees, make control shift gears guiding valve guide oil not acceptor's pressure fluctuation influence.
Before gear is not formed, the first gearshift guiding valve 1, the second gearshift guiding valve 2, the 3rd gearshift guiding valve 3, the 4th gearshift cunning
For valve 4 in the presence of spring force, gearshift guiding valve is in left position.First gearshift guiding valve 1, the second gearshift guiding valve 2, the 3rd gearshift
Guiding valve 3, the 4th gearshift guiding valve 4, the position movement of oil circuit change-over pilot valve 5 are controlled by magnetic valve S1, S2, S3, S4, S5 respectively
System, the switching of the mobile corresponding oil circuit of carry out by controlling spool position of shifting gears, and then complete the switching of gear.
Due to formed 1 grade, 3 grades, 5 grades, 7 grades of the synchronous shifting gear that formed on same axis, formed R shelves, 2 grades, 4
Shelves, 6 grades of the synchronous shifting gear that formed are on same axis, in order to avoid being exported caused by the malfunction of magnetic valve in same root
Two gears are formed on axle simultaneously, the damage or vehicle in turn resulting in gearbox are unable to normally travel, therefore, utilize hydraulic pressure
The mode of interlocking respectively to 1 grade, 3 grades, 5 grades, 7 grades progress hydraulic protectings, while in the same way to R shelves, 2 grades, 4 grades, 6
Shelves carry out hydraulic interlock protection.
Specific gear switch is as follows：Exemplified by 1 grade, hydraulic oil enters working connection a, and now magnetic valve S5 is powered, oil circuit
The guide end of change-over pilot valve 5 forms closed cavity volume, establishes pilot pressure, promotes oil circuit change-over pilot valve 5 to overcome spring force to move to left, makes
The valve works in right position, by the second gear oil circuit c UNICOMs, now the first gear oil circuit b cut-offs.Magnetic valve S1 works, and first changes
Gear guiding valve 1 guide end forms closed cavity volume, establishes guide's oil pressure, promotes the first gearshift guiding valve 1 to overcome spring force to be moved to the left,
By the second gearshift working connection c and the plunger shaft UNICOM of 1 grade of control, piston promotes selector fork movement, under the control of magnetic valve,
Quick flat consequent relief is into 1 grade.Meanwhile first guide's oil pressure at gearshift guiding valve 1 guide end act on the spring of the second gearshift guiding valve 2
End, and spring ensure that the second gearshift guiding valve 2 is in left position together, now, even if magnetic valve S2 is malfunctioned, the second gearshift guiding valve 2
There is oil pressure at guide end, because the spring terminal hydraulic coupling for guiding valve of shifting gears is bigger than the pilot pressure at guide end or equally big, in spring
There is spring force at end simultaneously, therefore the plunger shaft for leading to 3,7 gears there will not be hydraulic oil entrance, avoid in same root
The gear of gear is formed on axle two pairs of gears synchronous situation for forming gear simultaneously.Similarly, when forming 3 grades, control 1
Shelves, 5 grades, 7 grades of oil circuit be in cut-off state, such control mode is formed hydraulic interlock, be gearbox it is normal
Work provides guarantee.
Before 1 grade rises 2 grades, 2 grades of pre- gear selecting work has been completed, and its operation principle is identical with 1 grade of operation principle, i.e.,
1 grade rises 2 grades, and magnetic valve S5 is powered, and pilot pressure is established at the guide end of oil circuit change-over pilot valve 5, promotes oil circuit change-over pilot valve 5 to overcome bullet
Spring force moves to left, and makes the right position work of the valve, by the second gear oil circuit c UNICOMs, now the first gear oil circuit b cut-offs.Now, with will
The magnetic valve S1 of first gearshift guiding valve 1 current control is 0A, and the oil circuit that the first gearshift guiding valve 1 controls is in cut-off state.Control
The magnetic valve for making the 4th gearshift guiding valve 4 now uses the size of TCU Linear Control electric currents, progressivelyes reach maximum, hydraulic oil effect
In 2 grades of plunger shaft of control, piston movement promotes shift fork smoothly to move, and quick flat consequent relief is into 2 grades.4th gearshift guiding valve 4
Guide end establish oil pressure, promote the 4th gearshift guiding valve 4 to be moved to the left, meanwhile, the guide oil for acting on the 4th gearshift guiding valve 4 is made
For shift valve C spring terminal, control R shelves and 4 grades of oil circuit is set to be in cut-off state.Similarly, when forming 4 grades, R shelves, 2
Shelves, 6 grades be in cut-off state.Its hydraulic interlock protected mode with it is foregoing similarly, so avoid on same axis because of electricity
The malfunction of magnet valve forms the generation of two gear stages simultaneously, avoids the risk of gearbox damage.
The beneficial effects of the utility model are mainly reflected in：
1st, the utility model guide oil pressure cntrol guiding valve can provide stable pilot pressure, guide for whole shifting system
The size of pressure will not be fluctuated because of the fluctuation of main oil pressure, and the shifting of gearshift guiding valve can be smoothly promoted in the presence of magnetic valve
It is dynamic, by spool control valve and the size of mating holes opening, the flow and pressure of hydraulic oil are controlled, smoothly promotes selector fork to move
It is dynamic, there is good smooth gear shifting；
2nd, the utility model has the hydraulic interlock function of same root output shaft gear, there was only one on same root output shaft
Individual gear combines, and avoids the gearbox caused by magnetic valve malfunctions and damages；
3rd, the magnetic valve of the utility model gearshift guiding valve and the magnetic valve of oil circuit change-over pilot valve are same model, and gearshift is slided
Valve size and specification are that same model, the model specification of spring are consistent, therefore have good interchangeability.
The utility model further discloses a kind of gearbox, includes the gearshift hydraulic control system of any form described above
System.
It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that those skilled in the art will should say for clarity
For bright book as an entirety, the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
The a series of tool described in detail only for feasibility embodiment of the present utility model of those listed above
Body illustrates that they are simultaneously not used to limit the scope of protection of the utility model, all to be made without departing from the utility model skill spirit
Equivalent implementations or change should be included within the scope of protection of the utility model.
Claims (10)
1. hydraulic control system of shifting gears, including for providing the fuel tank of hydraulic oil, and the master that hydraulic oil is exported from fuel tank
Oil circuit（a）, and the one group of selector fork driven by the hydraulic oil, the selector fork is by synchronizer for selectivity
Ground is synchronous with shifting gear to form gear, and the shifting gear includes seven forward gears and a reversing shelves gear, and its is strange
Number shelves gear is arranged on same root odd number shelves output shaft, and its even number shelves gear and reverse gear arrangement of gears are in another even gear
On output shaft, it is characterised in that：Including
The gearshift guiding valve equal with the selector fork quantity and the magnetic valve for controlling each gearshift guiding valve, same root are defeated
Shaft is provided with gear hydraulic interlock structure；
Respectively by working connection（a）In hydraulic oil selectively input in the plunger shaft of selector fork first gearshift working connection
（b）With the second gearshift working connection（c）；
For switching the first gearshift working connection（b）With the second gearshift working connection（c）Oil circuit change-over pilot valve（5）.
2. gearshift hydraulic control system according to claim 1, it is characterised in that：Include four selector forks and and its
Four corresponding gearshift guiding valves, every two pairs of gearshift guiding valves and selector fork act on same root output shaft, each described
Gearshift guiding valve is respectively provided with the magnetic valve of a control its valve element movement, and has a guide end and spring terminal, and the guide end leads to
Cross magnetic valve to connect with the fuel tank, the hydraulic interlock structure is to be arranged on two gearshifts acted on same root output shaft
Hydraulic interlock oil circuit between guiding valve, one end of the hydraulic interlock oil circuit connect the guide end of a gearshift guiding valve wherein,
Spring terminal of the other end connection in another gearshift guiding valve.
3. gearshift hydraulic control system according to claim 2, it is characterised in that：The working connection（a）On be additionally provided with one
Branch, it is guide's oil circuit（d）, the working connection（a）In hydraulic oil pass through guide's oil pressure cntrol guiding valve（6）Enter to described
Guide's oil circuit（d）, guide's oil pressure cntrol guiding valve（6）Self-balance structure, the guide's oil circuit are fed back using rear end（d）Connection
The guide end of each gearshift guiding valve.
4. gearshift hydraulic control system according to claim 3, it is characterised in that：The guide's oil circuit（d）Slided with gearshift
Small filter screen and throttle orifice are provided between the guide end of valve.
5. gearshift hydraulic control system according to claim 4, it is characterised in that：The oil circuit change-over pilot valve（5）Pass through
One magnetic valve（S5）Control.
6. gearshift hydraulic control system according to claim 5, it is characterised in that：The oil circuit change-over pilot valve（5）Connection
There is a counterbalance valve（8）.
7. hydraulic control system of shifting gears, it is characterised in that：Including
For providing the fuel tank of hydraulic oil；
The working connection that hydraulic oil is exported from fuel tank（a）, the first gearshift working connection（b）With the second gearshift working connection（c）；
For switching the first gearshift working connection（b）With the second gearshift working connection（c）Oil circuit change-over pilot valve（5）；
The first gearshift working connection（b）With the second gearshift working connection（c）Make hydraulic pressure by being selectively communicated with gearshift guiding valve
Oil is selectively inputted to the plunger shaft of selector fork；
Each selector fork selectively synchronous with shifting gear can form gear by synchronizer, and the shifting gear includes seven
Individual forward gear and a reversing shelves gear, its odd number shelves gear are arranged on same root odd number shelves output shaft, its even gear
Gear and reverse gear arrangement of gears are on another even gear output shaft；
Act between the odd number shelves output shaft or the gearshift guiding valve of two selector forks on even gear output shaft and set
There is gear hydraulic interlock structure；
The gearshift guiding valve has a guide end and spring terminal, and the guide end passes through guide's oil circuit（d）With corresponding electromagnetism
Valve connects with fuel tank, and the hydraulic interlock structure is hydraulic interlock oil circuit, and one end connection of the hydraulic interlock oil circuit is wherein
The guide end of one gearshift guiding valve, spring terminal of the other end connection in another gearshift guiding valve.
8. gearshift hydraulic control system according to claim 7, it is characterised in that：Each gearshift guiding valve is respectively provided with one
Control its valve element mobile and determine the magnetic valve of its openings of sizes, and the guide's oil circuit at its guide end（d）Pass through a small filter screen
With throttle orifice and guide's oil pressure cntrol guiding valve（6）Connection.
9. gearshift hydraulic control system according to claim 8, it is characterised in that：Guide's oil pressure cntrol guiding valve（6）
Self-balance structure is fed back with rear end, dynamic equilibrium is reached by the hydraulic coupling at its guide end and the spring force of spring terminal, passed through
Regulating slide valve and the size of valve body mating holes opening form the hydraulic oil with steady pressure, and the hydraulic oil passes through guide's oil circuit
（d）Towards the guide end of the gearshift guiding valve.
10. gearbox, it is characterised in that：Including the gearshift hydraulic control system as described in claim 1 to 9 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720585746.2U CN206874805U (en) | 2017-05-24 | 2017-05-24 | Gear shifting hydraulic control system and gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720585746.2U CN206874805U (en) | 2017-05-24 | 2017-05-24 | Gear shifting hydraulic control system and gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874805U true CN206874805U (en) | 2018-01-12 |
Family
ID=61340557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720585746.2U Withdrawn - After Issue CN206874805U (en) | 2017-05-24 | 2017-05-24 | Gear shifting hydraulic control system and gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206874805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435733A (en) * | 2017-05-24 | 2017-12-05 | 捷孚传动科技有限公司 | Gear shifting hydraulic control system and gearbox |
-
2017
- 2017-05-24 CN CN201720585746.2U patent/CN206874805U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435733A (en) * | 2017-05-24 | 2017-12-05 | 捷孚传动科技有限公司 | Gear shifting hydraulic control system and gearbox |
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