CN106704567B - A kind of uninterrupted hydraulic gear-shifting device of power - Google Patents
A kind of uninterrupted hydraulic gear-shifting device of power Download PDFInfo
- Publication number
- CN106704567B CN106704567B CN201710059234.7A CN201710059234A CN106704567B CN 106704567 B CN106704567 B CN 106704567B CN 201710059234 A CN201710059234 A CN 201710059234A CN 106704567 B CN106704567 B CN 106704567B
- Authority
- CN
- China
- Prior art keywords
- piston
- spool
- gear
- linkage
- directional control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
-
- 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
- F16H61/02—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 characterised by the signals used
-
- 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
- F16H61/02—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 characterised by the signals used
- F16H61/0262—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 characterised by the signals used the signals being hydraulic
- F16H61/0265—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 characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
- F16H61/0267—Layout of hydraulic control circuits, e.g. arrangement of valves
-
- 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
- F16H61/4008—Control of circuit pressure
-
- 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
- F16H61/4061—Control related to directional control valves, e.g. change-over valves, for crossing the feeding conduits
-
- 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
- F16H61/4069—Valves related to the control of neutral, e.g. shut off valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The present invention discloses a kind of uninterrupted hydraulic gear-shifting device of power；Hydraulic cylinder is installed on input shaft, is set on hydraulic cylinder there are two spool cavity, and the first linkage spool and the second linkage spool are separately installed in two spool chamber bodies；The side of first linkage spool and the second linkage spool is piston structure, is sealed by linkage valve core seal ring, is equipped with linkage spool return spring, the other side is cone structure；The face area of the conical surface side of first linkage spool and the second linkage spool is less than the face area of the other end；First linkage spool is reversely installed with the second linkage spool.The present invention switches for automobile gears, in shift process, power may be implemented and do not interrupt；After changing to gear, the oil pressure established in hydraulic cylinder can be always maintained at；Two gears can only change to one of them in shift process, two gear mutually lockings.
Description
Technical field
The present invention relates to a kind of gearshift, in particular to a kind of uninterrupted hydraulic gear-shifting device of power is specifically a kind of
It is able to achieve that power is uninterrupted, gearshift of gear interlock.
Background technique
The overall trend of speed control system of car is developed from manual shift to self shifter, in recent years the meter of high speed development
Calculation machine technology is applied to speed control system of car, so that automatic Transmissions Technique has obtained quick development.In electric car application,
Since driving motor itself has certain rotational speed and torque regulating power, from the aspect of cost performance, become using two grades to three gears
Fast device can satisfy the use demand.The shift process of tradition machinery formula automatic transmission is needed by plucking gear, gear selecting and putting into gear
Process, therefore, in shift process can lead to the problem of that torque break, mechanical shock is larger and shift time is longer, reduce vapour
The acceleration and ride comfort of vehicle.CVT, DCT speed changer can be realized the function of power failure-free shift, but structure is more complex,
It is more demanding to manufacturing process.
Summary of the invention
The main purpose of the present invention is to provide a kind of uninterrupted hydraulic gear-shifting devices of power, can be realized automobile and are shifting gears
Power is uninterrupted in the process, function of gear interlock, and has relatively simple structure.
The uninterrupted hydraulic gear-shifting device of power according to the present invention, by the control to the hydraulic cylinder piston direction of motion,
So that the clutch steel disc and friction plate of two sides are separated and are combined by set Shifting, point of two sides clutch
It is realized from cohesive process by the movement of linkage spool, needs not move through the process of neutral gear, may be implemented to move in shift process
Power is not interrupted.If oil pressure is established in the side of linkage spool, the side for establishing oil pressure will push linkage spool mobile to the other side,
To the conical surface pressure release by other side oil pressure by linkage spool, the interlock function of two gears can be realized.Involved by the present invention
And the uninterrupted gearshift critical component of power used two clutches, two linkage spools to complete gear shift operation, have
Have the characteristics that structure is simple.
In order to achieve the above-mentioned object of the invention, present invention employs following technical solutions:
A kind of uninterrupted hydraulic gear-shifting device of power: hydraulic cylinder is installed on input shaft, is set on hydraulic cylinder there are two spool
Cavity is separately installed with the first linkage spool and the second linkage spool in two spool chamber bodies；First linkage spool and second
The side of movable valve plug is piston structure, is sealed by linkage valve core seal ring, and linkage spool return spring is equipped with, and the other side is cone
Face structure；The face area of the conical surface side of first linkage spool and the second linkage spool is less than the face area of the other end；The
One linkage spool is reversely installed with the second linkage spool；First piston oil inlet is provided on the hydraulic cylinder of first piston side, it is close
The hydraulic cylinder of first linkage spool conical surface side is provided with the first oil outlet；Second piston oil inlet is provided on the hydraulic cylinder of second piston side
Mouthful, the second oil outlet is provided with close to the second linkage spool conical surface side hydraulic cylinder；
The hydraulic cylinder both ends are respectively equipped with first piston and second piston；First piston and second piston are respectively with first
Platen and the connection of the second platen；First piston return spring is connected with first piston, and first piston return spring is installed on first
In piston return spring seat, first piston return spring seat is connect with hydraulic cylinder；Second piston return spring and second piston connect
It connects, second piston return spring is installed in second piston return spring seat, and second piston return spring seat is connect with hydraulic cylinder；
First friction plate passes through the extruding of the first platen and loosens the combination and separation realized with the first steel disc；Second friction plate passes through the
The extruding of two platens and the combination and separation for loosening realization with the second steel disc；First friction plate and the first steel disc, the second friction plate
It is connect respectively with vehicle transmission gear with the second steel disc；
The hydraulic gear-shifting device includes at least two solenoid directional control valves, and at least two solenoid directional control valve one end all passed through
Filter, oil pump and fuel tank connect；The other end respectively with first piston oil inlet, second piston oil inlet, the first spool oil inlet
It is connected with the second spool oil inlet；First oil outlet and the second oil outlet are directly connected to fuel tank.
To further realize the object of the invention, it is preferable that the first linkage spool and the second linkage spool are same outer
The rotation body structure of shape size；First linkage spool is installed in the linkage spool chamber body connecting with the first oil outlet, conical surface end
Close to second piston side, the second linkage spool is installed in the linkage spool chamber body connecting with the second oil outlet, and conical surface end is leaned on
Nearly first piston side.
Preferably, the hydraulic cylinder is installed on input shaft by the support of the first cylinder body bearing and the second cylinder body bearing.
Preferably, the hydraulic cylinder is fixed on vehicle frame.
Preferably, the vehicle transmission gear is fixed axis gear transmission device；The gear includes first gear and second
Gear；First gear is installed on input shaft by first bearing, and the first steel disc is equipped in first gear, is installed on input shaft
There is the first friction plate, the first steel disc and the first friction plate are flexibly connected；Second gear is installed on input shaft by second bearing,
Second steel disc is installed in second gear, the second friction plate is installed on input shaft, the second steel disc and the second friction plate activity connect
It connects.
Preferably, first piston inner seal ring and first piston external seal are equipped between the first piston and hydraulic cylinder
Circle；The second inner piston sealing ring and the second outer piston sealing ring are respectively equipped between second piston and hydraulic cylinder.
Preferably, the vehicle transmission gear is planet gear transmission device；Gear box is fixed with vehicle frame, and cabinet is logical
Cross bearing and input axis connection；First steel disc is connect with hydraulic cylinder, and the first friction plate is connect with cabinet；Second steel disc is installed on liquid
On cylinder pressure, hydraulic cylinder is also the gear ring of planetary mechanism simultaneously, and the second friction plate is installed on the sun gear of planetary mechanism, sun gear
It is fixed with input shaft；Planetary gear is installed on planet carrier by planetary gear bearing.
Preferably, the solenoid directional control valve is three；Respectively the first solenoid directional control valve, the second solenoid directional control valve and third
Solenoid directional control valve；First solenoid directional control valve is connected to first piston oil inlet, the second solenoid directional control valve after connecting the first check valve
Second piston oil inlet is connected to after connection second one-way valve, and third solenoid directional control valve is separately connected the first spool oil inlet and the
Two spool oil inlets.
Preferably, the solenoid directional control valve is two；Respectively the first solenoid directional control valve and the second solenoid directional control valve；First
Solenoid directional control valve is connected to first piston oil inlet after connecting the first check valve, and the first spool oil inlet connects the first electromagnetic switch
The outlet of valve；It is connected to second piston oil inlet after second solenoid directional control valve connection second one-way valve, the second spool oil inlet connects
Connect the outlet of the second solenoid directional control valve.
Preferably, it is normally opened bi-bit bi-pass electromagnetic switch that first solenoid directional control valve, the second solenoid directional control valve, which are to valve,
Valve；Third solenoid directional control valve is two position, three-way electromagnetic change valve.
The first linkage of present invention spool, the second side for linking spool are piston structure, are sealed by sealing ring, the other side is
Cone match on cone structure, with cylinder body, sectional area of the linkage spool close to conical surface side are less than piston structure side, linkage
Spool moves left and right the hydraulic oil seal and draining for realizing conical surface side.First linkage spool and the second linkage spool are reversely installed,
It links under the action of hydraulic cylinder oil pressure, when hydraulic oil pushes the first linkage spool to move right, establishes oil on the left of hydraulic cylinder
Pressure, right side pass through the first linkage spool conical surface pressure release；When hydraulic oil pushes the second linkage spool to move downward, on the right side of hydraulic cylinder
Oil pressure is established, left side can be realized two sides gear interlock by the second linkage spool conical surface pressure release.
First linkage spool and the second linkage spool are reversely installed, and symmetrical about input shaft.It can also be with input
Axial symmetry installs the consistent linkage spool of multiple directions and forms first group, for first grade of shift, is symmetrically installed with input shaft more
The consistent linkage spool in a direction forms second group, second group of linkage spool and first group of linkage spool installation direction on the contrary, with
It shifts gears in second gear.
First steel disc and the first friction plate, the second steel disc and the second friction plate of the invention, gradually combine in shift process,
The neutral gear stage is needed not move through, can be realized power failure-free shift.
The course of work of the invention is as follows:
(1) neutral gear changes to one grade.When shift, the first solenoid directional control valve is opened, and the second solenoid directional control valve is closed, third electromagnetism
Reversal valve connects the first spool oil inlet, then starts oil pump, hydraulic oil enters first piston oil inlet by the first check valve
And the hydraulic cylinder in first piston side establishes oil pressure, establishes oil by the first spool oil inlet and in the first linkage spool chamber body
Pressure.With the rising of oil pressure, the first linkage spool overcomes the effect of the first linkage spool return spring to move right to dominant bit
It sets.Oil pressure continues to rise, and overcomes the effect of first piston return spring and first piston is pushed to be moved to the left, and first piston pushes
First platen combines the first friction plate and the first steel disc, thus one grade of change.After completing shift, the first solenoid directional control valve is closed
It closes, oil pump is closed, hydraulic cylinder pressure maintaining under the action of the first check valve of first piston side, and the first linkage spool is first
It is moved to the left under the action of movable valve plug return spring, the intracorporal hydraulic oil of spool chamber returns to oil cylinder.
(2) one grades change to two grades.When shift, the second solenoid directional control valve is opened, and the first solenoid directional control valve is closed, third electromagnetism
Reversal valve connects the second spool oil inlet, then starts oil pump, and hydraulic oil enters second piston oil inlet and begins setting up oil pressure, leads to
It crosses the second spool oil inlet and establishes oil pressure in the second linkage spool chamber body.Due to the face area of the conical surface side of linkage spool
Less than the face area of the other end, during hydraulic oil rises, the second linkage spool will be moved to the left, and second piston is to the right
Mobile, the hydraulic oil on the right side of hydraulic cylinder enters the second oil outlet by the conical surface of the second linkage spool and returns to fuel tank, to make liquid
Pressure release on the right side of cylinder pressure, oil pressure are gradually reduced, first piston gradually return under the action of the return spring, the first friction plate and second
Steel disc is gradually disengaged, and the second friction plate and the second steel disc gradually combine, and first gear and second gear are rotated with different rotating speeds, the
It is sliding wear state between one friction plate and the second steel disc, the second friction plate and the second steel disc.With on the right side of hydraulic cylinder oil pressure it is upper
It rises, the second linkage spool is moved to the left to position, and second piston overcomes return spring active force to move right, and the second platen is pushed to make
It obtains the second friction plate and the second steel disc is completely combined, system changes to two grades, in shift process, by sliding wear shape between two gears
State is excessive, and power output is uninterrupted.After completing shift, the second solenoid directional control valve is closed, and oil pump is closed, the liquid of second piston side
Cylinder pressure pressure maintaining under the action of second one-way valve, the second linkage spool is under the action of the second linkage spool return spring to moving to left
Dynamic, the intracorporal hydraulic oil of spool chamber returns to oil cylinder.
(3) two grades of change neutral gears.At this point, third solenoid directional control valve the first spool oil inlet of connection, the first solenoid directional control valve,
Second solenoid directional control valve is closed, and oil pump is then turned on, since the piston structure side sectional area of linkage spool is greater than conical surface side
Sectional area, the first linkage spool hydraulic oil that moves right on the right side of hydraulic cylinder links that enter first fuel-displaced for spool conical flow by first
Mouthful, return, the second friction plate and the separation of the second steel disc, system change to neutral gear to second piston under the action of the return spring.
Neutral gear changes to two grades of, two grade change one grade and one grade change two grade situation classes similar with one grade of situation of neutral gear change
Seemingly, one grade of change neutral gear is similar with two grades of change neutral gear situations.
Compared with the existing technology, the present invention has the advantage that
(1) by controlling the separation of two clutches and being implemented in combination with the switching of gear, power is uninterrupted in shift process.
(2) the linkage spool designed makes that a gear can only be changed at any time, realizes the interlock function of gear.
(3) gearshift main component has used two clutches, two linkage spools to complete, and has structure simple
Feature.
Detailed description of the invention
Fig. 1 is the structure principle chart of the uninterrupted gearshift of 1 power of the embodiment of the present invention.
Fig. 2 is the enlarged top view of Fig. 1.
Fig. 2 a is the linkage spool force diagram of Fig. 2 first.
Fig. 2 b is that neutral gear changes Fig. 2 interstage valve core segment partial enlarged view during 1 gear.
Fig. 2 c is that 1 gear changes Fig. 2 interstage valve core segment partial enlarged view during 2 gears.
Fig. 2 d is that 2 gears change Fig. 2 interstage valve core segment partial enlarged view during neutral gear.
Fig. 3 is the structure principle chart of the uninterrupted gearshift of 2 power of the embodiment of the present invention.
Fig. 4 is the structure principle chart of the uninterrupted gearshift of 3 power of the embodiment of the present invention.
Specific embodiment
For a better understanding of the invention, the present invention is further illustrated with reference to the accompanying drawings and examples, but this hair
Bright embodiment is without being limited thereto.
Embodiment 1
A kind of uninterrupted hydraulic gear-shifting device of power realizes two applied to the two-shift automatic variable speed system of electric car
The automatic switchover of gear.
As shown in Figure 1, 2, a kind of uninterrupted gearshift of power includes that fuel tank 1, oil pump 2, filter 3, the first electromagnetism change
To valve 7, the second solenoid directional control valve 5, third solenoid directional control valve 43, the first check valve 6, second one-way valve 4, input shaft 8, the first tooth
Take turns the 10, first steel disc 11, the first friction plate 12, the first platen 13, first piston return spring 14, first piston return spring seat
47, first piston inner seal ring 42, first piston exterior seal ring 15, first piston oil inlet 16, the first spool oil inlet 17,
One piston 18, the first linkage linkage linkage spool return spring 21, first of valve core seal ring 19, first of spool 23, first is fuel-displaced
Mouth 20, second piston inner seal ring 40, second piston exterior seal ring 33, second piston 25, second piston return spring 26, second
It is piston return spring seat 27, the second platen 28, the second steel disc 30, the second friction plate 29, second gear 24, first bearing 9, hydraulic
Cylinder 22, the first cylinder body bearing 41, the second cylinder body bearing 32, second bearing 31, second piston oil inlet 34, the second spool oil inlet
36, the second oil outlet 38, second linkage spool 35, second linkage spool return spring 37, second linkage valve core seal ring 39.
First gear 10 is installed on input shaft 8 by first bearing 9, and the first steel disc 11 is equipped in first gear 10,
First friction plate 12 is installed, the first steel disc 11 and the first friction plate 12 are flexibly connected, the first platen 13 and first on input shaft 8
Piston 18 connects, and first piston return spring 14 and first piston 18 connect, and it is living that first piston return spring 14 is installed on first
It gets back into a spring base 47, first piston return spring seat 47 is connect with hydraulic cylinder 22, and first piston 18 is installed on hydraulic cylinder 22
Interior side is equipped with first piston inner seal ring 42 and first piston exterior seal ring 15 between first piston 18 and hydraulic cylinder 22,
Pass through the first interior plug sealing ring 42 living and the sealing of the first outer piston sealing ring 15.First friction plate 12 is squeezed by the first platen 13
Press and loosen the combination and separation realized with the first steel disc 11.
Second gear 24 is installed on input shaft 8 by second bearing 31, and the second steel disc 30 is equipped in second gear 24,
Second friction plate 29 is installed, the second steel disc 30 and the second friction plate 29 are flexibly connected on input shaft 8；Second platen 28 and second
Piston 25 connects, and second piston return spring 26 and second piston 25 connect, and it is living that second piston return spring 26 is installed on second
It gets back into a spring base 27, second piston return spring seat 27 is connect with hydraulic cylinder 22, and second piston 25 is installed on hydraulic cylinder 22
The interior other side is respectively equipped with the second inner piston sealing ring 40 and the sealing of the second outer piston between second piston 25 and hydraulic cylinder 22
Circle 33 is sealed by the second inner piston sealing ring 40 and the second outer piston sealing ring 33.Second friction plate 29 passes through the second platen
28 extruding and the combination and separation for loosening realization with the second steel disc 30.
Hydraulic cylinder 22 is installed on input shaft 8 by the support of the first cylinder body bearing 41 and the second cylinder body bearing 32, hydraulic
Cylinder 22 is fixed on vehicle frame, is set in hydraulic cylinder 22 there are two spool cavity, and two spool cavitys are rotation body structure, with input shaft
8 are arranged symmetrically.Two spool cavitys are close to the first linkage spool return spring 21 and the second linkage 37 side of spool return spring
Closing, has the first spool oil inlet 17 and the second spool oil inlet 36.First is separately installed in two spool chamber bodies
Link spool 23 and the second linkage spool 35.First linkage spool 23 and the second linkage spool 35 are the rotation of same outer dimension
Body structure, the first linkage spool 23 and the second linkage spool 35 are reversely installed.First linkage spool 23 and the second linkage spool 35
Side be piston structure, sealed by linkage valve core seal ring, be equipped with linkage spool return spring, the other side be conical surface knot
Structure.First linkage spool 23 is installed in the linkage spool chamber body connecting with the first oil outlet 20, and conical surface end is close to second piston
25 sides, the second linkage spool 35 are installed in the linkage spool chamber body connecting with the second oil outlet 38, and conical surface end is close to first
18 side of piston.It is provided with first piston oil inlet 16 on the hydraulic cylinder 22 of 18 side of first piston, is bored close to the first linkage spool 23
The hydraulic cylinder 22 of surface side is provided with the first oil outlet 20；It is provided with second piston oil inlet 34 on the hydraulic cylinder 22 of 25 side of second piston,
The second oil outlet 38 is provided with close to the second linkage 35 conical surface side hydraulic cylinder 22 of spool.
As shown in Figure 2 a, there is the part of hydraulic oil hatching to represent in hydraulic cylinder and establish hydraulic, empty part representative
Without hydraulic foundation.In order to push the first linkage spool mobile, it is necessary to meet following condition for the thrust of the first linkage spool 23:
F1+F3> F2+F4
In formula, F1For the pressure of the first linkage 23 left end face of spool, F2For the bullet of the first linkage spool return spring 21
Power, F3For the pressure of first linkage 23 conical surface of spool, F4The pressure received for the first linkage 23 right end face of spool.Above formula can table
It is shown as the relationship of linkage spool chamber body pressure and interstage valve core area, is shown below:
In formula, PlFor the pressure of 22 left side cavity of hydraulic cylinder, PrFor the pressure of 22 right side cavity of hydraulic cylinder, S1It is first
23 left side forced area of movable valve plug, S2For the first linkage 23 right side conical surface forced area of spool, S3For 23 right side of the first linkage spool
End face forced area, k1For the coefficient of elasticity of the first linkage spool return spring 21, x1For the displacement of spring.
The relationship and the first linkage spool 23 of second linkage 35 two sides liquid pressure of spool and each section forced area are consistent.
Fuel tank 1 is connect by oil duct with oil pump 2, and connects filter 3, and filter 3 is separately connected the first solenoid directional control valve
7, the second solenoid directional control valve 5 and third solenoid directional control valve 43.First solenoid directional control valve 7 is connected to the after connecting the first check valve 6
One piston oil inlet 16, the second solenoid directional control valve 5 are connected to second piston oil inlet 34, third electricity after connecting second one-way valve 4
Magnetic reversal valve 43 is separately connected the first spool oil inlet 17 and the second spool oil inlet 36.First oil outlet 20 and the second oil outlet
38 are directly connected to fuel tank 1.First solenoid directional control valve 7, the second solenoid directional control valve 5 are normally opened two-position two-way electromagnetic directional valve, the
Three solenoid directional control valves 43 are two position, three-way electromagnetic change valve.
The side of first linkage spool 23 and the second linkage spool 35 is piston structure, is sealed by sealing ring, the other side is
Cone match on cone structure, with cylinder body, sectional area of the linkage spool close to conical surface side are less than piston structure side, linkage
Spool moves left and right the hydraulic oil seal and draining for realizing conical surface side.
In Fig. 2, the corresponding one grade of output of first gear 10, the corresponding two grades of output of second gear 24.Link spool and piston
Shown in initial position such as Fig. 2 b (1), top half is the partial enlarged view of first linkage 23 one end of spool, lower half in figure in figure
It is divided into the partial enlarged view of 35 one end of the second linkage spool.When system changes to one grade from neutral gear, the first solenoid directional control valve 7 is beaten
It opens, the second solenoid directional control valve 5 is closed, and third solenoid directional control valve 43 connects the first spool oil inlet 17, then starts oil pump 2, liquid
Pressure oil enters first piston oil inlet 16 by the first check valve 6 and the hydraulic cylinder 22 in 18 side of first piston establishes oil pressure,
Oil pressure is established by the first spool oil inlet 17 and in the first linkage 23 cavity of spool.With the rising of oil pressure, the first interstage valve
Core 23 overcomes the effect of the first linkage spool return spring 21 to move right to maximum position.Oil pressure continues to rise, and overcomes first
The effect of piston return spring 14 simultaneously pushes first piston 18 to be moved to the left, and first piston 18 pushes the first platen 13 to make first
Friction plate 12 and the first steel disc 11 combine, thus one grade of change, shown in such as Fig. 2 b (2) of state at this time.After completing shift, first
Solenoid directional control valve 7 is closed, and oil pump 2 is closed, pressure maintaining under the action of the first check valve 6 of hydraulic cylinder 22 of 18 side of first piston,
First linkage spool 23 is moved to the left under the action of the first linkage spool return spring 21, and the intracorporal hydraulic oil of spool chamber returns to
Oil cylinder, shown in such as Fig. 2 b (3) of state at this time.
When changing to two grades for one grade, the second solenoid directional control valve 5 is opened, and the first solenoid directional control valve 7 is closed, third electromagnetic switch
Valve 43 connects the second spool oil inlet 36, then starts oil pump 2, and hydraulic oil enters second piston oil inlet 34 and begins setting up oil
Pressure establishes oil pressure in the second linkage 35 cavity of spool by the second spool oil inlet 36.Due to the conical surface side for the spool that links
Face area be less than the other end face area, hydraulic oil rise during, second linkage spool 35 will be moved to the left,
Second piston 25 moves right, and the hydraulic oil on 22 right side of hydraulic cylinder enters the second oil outlet by the conical surface of the second linkage spool 35
38 return to fuel tank 1, to make 22 right side pressure release of hydraulic cylinder, the return under the action of the return spring of first piston 18, such as Fig. 2 c (1)
Shown, the first friction plate 12 and the second steel disc 30 are gradually disengaged, and the second friction plate 29 and the second steel disc 30 gradually combine, the first tooth
Wheel 10 and second gear 24 are rotated with different rotating speeds, the first friction plate 12 and the second steel disc 30, the second friction plate 29 and the second steel
It is sliding wear state between piece 30.With the rising of 22 right side oil pressure of hydraulic cylinder, the second linkage spool 35 is moved to the left in place, and second
Piston 25 overcomes return spring active force to move right, and as shown in Fig. 2 c (2), the second platen 28 is pushed to make the second friction plate 29
It is completely combined with the second steel disc 30, two grades of system change is excessive by sliding wear state between two gears in shift process, moves
Power output is uninterrupted.After completing shift, the second solenoid directional control valve 5 is closed, and oil pump 2 is closed, the hydraulic cylinder of 25 side of second piston
22 pressure maintainings under the action of second one-way valve 4, second linkage spool 35 second linkage spool return spring 37 under the action of to
It moves left, as shown in Fig. 2 c (3), the intracorporal hydraulic oil of spool chamber returns to oil cylinder.
When two grades of change neutral gears, third solenoid directional control valve 43 connects the first spool oil inlet 17, the first solenoid directional control valve
7, the second solenoid directional control valve 5 is closed, and then turns on oil pump 2, since the piston structure side sectional area of linkage spool is greater than the conical surface
The sectional area of side, first linkage spool 23 move right 22 right side hydraulic oil of hydraulic cylinder by first linkage 23 conical flow of spool
Enter the first oil outlet 20, the return under the action of the return spring of second piston 25, as shown in Fig. 2 d (1), 29 He of the second friction plate
The separation of second steel disc 30, system change to neutral gear.After changing to neutral gear, oil pump 2 is closed, and the first linkage spool 23 is in the first linkage spool
It is moved to the left under the action of return spring 21, the intracorporal hydraulic oil of spool chamber returns to oil cylinder.
Neutral gear changes to two grades of, two grade change one grade and one grade change two grade situation classes similar with one grade of situation of neutral gear change
Seemingly, one grade of change neutral gear is similar with two grades of change neutral gear situations.
As shown in Figure 1, the first output shaft gear 45 and the second output shaft gear 46 are disposed on output shaft 44, the first output
Shaft gear 45 and first gear 10 engage, and the second output shaft gear 46 is engaged with second gear 24.When the first friction plate 12 and
When one steel disc 11 combines, the power of input shaft 8 is transmitted on the first output shaft gear 45 by first gear 10, and output shaft 44 is
One grade of output；When the second friction plate 29 and the second steel disc 30 combine, the power of input shaft 8 is transmitted to the by second gear 24
On two output shaft gears 46, output shaft 44 is two grades of outputs；When the first friction plate 12 and the separation of the first steel disc 11, while second rubs
When pad 29 and the second steel disc 30 separate, 44 unpowered output of output shaft is neutral gear.
Embodiment 2
As shown in figure 3, input shaft 8 is connected to the output shaft of motor, and neutral gear can pass through control in electric car application
Motor stops realizing, it may not be necessary to third solenoid directional control valve 43 shown in Fig. 2.First solenoid directional control valve 7 connection first is single
First piston oil inlet 16 is connected to after to valve 6, the first spool oil inlet 17 connects the outlet of the first solenoid directional control valve 7；Second
Solenoid directional control valve 5 is connected to second piston oil inlet 34, the second electricity of the second spool oil inlet 36 connection after connecting second one-way valve 4
The outlet of magnetic reversal valve 5.First oil outlet 20 and the second oil outlet 38 are directly connected to fuel tank 1.First solenoid directional control valve 7 and
Two solenoid directional control valves 5 are normally opened two-position two-way electromagnetic directional valve.
The concrete operating principle of shift process is substantially the same manner as Example 1, is not repeated herein.
Embodiment 3
As shown in figure 4, a kind of uninterrupted gearshift of power based on planetary mechanism；Gear box 9 is fixed with vehicle frame,
Cabinet 9 is connect by bearing 8 with input shaft 32.First steel disc 10 is connect with hydraulic cylinder 24, and the first friction plate 11 connects with cabinet 9
It connects.Second steel disc 26 is installed on hydraulic cylinder 24, and hydraulic cylinder 24 is also the gear ring of planetary mechanism, the installation of the second friction plate 25 simultaneously
In on the sun gear 28 of planetary mechanism, sun gear 28 and input shaft 32 are fixed.Planetary gear 27 is installed by planetary gear bearing
In on planet carrier 29, planet carrier 29 provides power output.Other modular constructions and embodiment 1 are essentially identical.
28 number of teeth of sun gear is z1, the gear ring number of teeth on hydraulic cylinder 24 is z2IfSystem has following operating mode:
(1) when neutral gear changes to one grade, the second solenoid directional control valve 5 is opened, and the first solenoid directional control valve 7 is closed, and oil pump 2 is opened,
Hydraulic oil enters second and pushes second piston 23 to move right into piston hydraulic fluid port 34, and hydraulic oil, which enters the second spool oil inlet 35, to be pushed away
Dynamic second linkage spool 36 moves downward.As oil pressure rises, second piston 23, which moves right, makes the second steel disc 26 and second rub
Pad 25 combines, so that the gear ring on sun gear 28 and hydraulic cylinder 24 be made to be rigidly connected, planet carrier 29 is exported with 1 transmission ratio.
After completing shift, the second solenoid directional control valve 5 is closed, and oil pump 2 is closed, the second linkage 36 return of spool.
At (2) one grades two grades of change, the first solenoid directional control valve 7 is opened, and the second solenoid directional control valve 5 is closed, and oil pump is opened, liquid
Pressure oil enters the first spool oil inlet and the first linkage spool 21 is pushed to move right, while hydraulic oil enters first into piston hydraulic fluid port
15 promotion first pistons 17 move downward, and hydraulic oil is discharged from the first oil outlet 20 out, right side hydraulic cylinder pressure relief, the second steel disc 26
It is gradually disengaged with the second friction plate 25, the first steel disc 10 and the first friction plate 11 gradually combine, the first steel disc 10 and the first friction
It is sliding wear state, sun gear 28 and gear ring, hydraulic cylinder on hydraulic cylinder 24 between piece 11, the second steel disc 26 and the second friction plate 25
It is non-rigid connection between gear ring on 24 and cabinet 9.As oil pressure rises, the second steel disc 26 and the second friction plate 25 divide completely
From first piston 17, which moves downward, is completely combined the first steel disc 10 and the first friction plate 11, gear ring and case on hydraulic cylinder 24
Body 9 is fixed, and planet carrier 29 is exported with the transmission ratio of 1+ α, and due to the presence of sliding wear state, this process power output is uninterrupted.It is complete
After shift, the first solenoid directional control valve 7 is closed, and oil pump 2 is closed, the first linkage 21 return of spool.
Two grades of neutral gear change is similar with one grade of change of neutral gear, and two grades one grade of change similar with one grade of two grades of change.
Hydraulic system and the working principle of linkage spool are substantially the same manner as Example 1 in shift process, are not repeated herein.
Claims (8)
1. a kind of uninterrupted hydraulic gear-shifting device of power, which is characterized in that hydraulic cylinder is installed on input shaft, and hydraulic cylinder is equipped with
Two spool cavitys are separately installed with the first linkage spool and the second linkage spool in two spool chamber bodies；First linkage spool
Side with the second linkage spool is piston structure, is sealed by linkage valve core seal ring, is equipped with linkage spool return spring, separately
Side is cone structure；The face area of the conical surface side of first linkage spool and the second linkage spool is less than the end face of the other end
Area；First linkage spool is reversely installed with the second linkage spool；The hydraulic cylinder both ends are respectively equipped with first piston and second
Piston；First piston oil inlet is provided on the hydraulic cylinder of first piston side, the hydraulic cylinder close to the first linkage spool conical surface side is opened
There is the first oil outlet；Second piston oil inlet is provided on the hydraulic cylinder of second piston side, close to the second linkage spool conical surface side liquid
Cylinder pressure is provided with the second oil outlet；
First piston and second piston are connect with the first platen and the second platen respectively；First piston return spring and first piston
Connection, first piston return spring are installed in first piston return spring seat, and first piston return spring seat and hydraulic cylinder connect
It connects；Second piston return spring is connected with second piston, and second piston return spring is installed in second piston return spring seat,
Second piston return spring seat is connect with hydraulic cylinder；First friction plate passes through the extruding of the first platen and loosens realization and the first steel
The combination and separation of piece；Second friction plate passes through the extruding of the second platen and loosens the combination and separation realized with the second steel disc；
First friction plate and the first steel disc, the second friction plate and the second steel disc are connect with vehicle transmission gear respectively；
The hydraulic gear-shifting device includes two or three solenoid directional control valves, two or three solenoid directional control valve one end all passed through
Filter, oil pump and fuel tank connect；If the solenoid directional control valve is three；Respectively the first solenoid directional control valve, the second electromagnetic switch
Valve and third solenoid directional control valve；The first solenoid directional control valve other end is connected to first piston oil inlet after connecting the first check valve,
Second piston oil inlet, the third solenoid directional control valve other end are connected to after second solenoid directional control valve other end connection second one-way valve
It is separately connected the first spool oil inlet and the second spool oil inlet；If the solenoid directional control valve is two；Respectively the first electromagnetism
Reversal valve and the second solenoid directional control valve；The first solenoid directional control valve other end is connected to first piston oil inlet after connecting the first check valve
Mouthful, the first spool oil inlet connects the outlet of the first solenoid directional control valve；The second solenoid directional control valve other end connects second one-way valve
After be connected to second piston oil inlet, the second spool oil inlet connects the outlet of the second solenoid directional control valve.
2. the uninterrupted hydraulic gear-shifting device of power according to claim 1, which is characterized in that it is described first linkage spool and
Second linkage spool is the rotation body structure of same outer dimension；First linkage spool is installed on the connection connecting with the first oil outlet
In movable valve plug cavity, conical surface end is installed on the linkage connecting with the second oil outlet close to second piston side, the second linkage spool
In spool chamber body, conical surface end is close to first piston side.
3. the uninterrupted hydraulic gear-shifting device of power according to claim 1, which is characterized in that the hydraulic cylinder passes through first
The support of cylinder body bearing and the second cylinder body bearing is installed on input shaft.
4. the uninterrupted hydraulic gear-shifting device of power according to claim 1, which is characterized in that the hydraulic cylinder is fixed on vehicle
On frame.
5. the uninterrupted hydraulic gear-shifting device of power according to claim 1, which is characterized in that the vehicle transmission gear is
Fixed axis gear transmission device；The gear includes first gear and second gear；First gear is installed on defeated by first bearing
Enter on axis, the first steel disc is installed in first gear, the first friction plate, the first steel disc and the first friction plate are installed on input shaft
It is flexibly connected；Second gear is installed on input shaft by second bearing, is equipped with the second steel disc in second gear, on input shaft
Second friction plate is installed, the second steel disc and the second friction plate are flexibly connected.
6. the uninterrupted hydraulic gear-shifting device of power according to claim 5, which is characterized in that the first piston with it is hydraulic
First piston inner seal ring and first piston exterior seal ring are equipped between cylinder；Second is respectively equipped between second piston and hydraulic cylinder
Inner piston sealing ring and the second outer piston sealing ring.
7. the uninterrupted hydraulic gear-shifting device of power according to claim 1, which is characterized in that the vehicle transmission gear is
Planet gear transmission device；Gear box is fixed with vehicle frame, and cabinet passes through bearing and input axis connection；First steel disc with it is hydraulic
Cylinder connection, the first friction plate are connect with cabinet；Second steel disc is installed on hydraulic cylinder, and hydraulic cylinder is also the tooth of planetary mechanism simultaneously
Circle, the second friction plate are installed on the sun gear of planetary mechanism, and sun gear is fixed with input shaft；Planetary gear passes through planetary gear
Bearing is installed on planet carrier.
8. the uninterrupted hydraulic gear-shifting device of power according to claim 1, which is characterized in that first solenoid directional control valve
It is all normally opened two-position two-way electromagnetic directional valve with the second solenoid directional control valve；Third solenoid directional control valve is two-position three-way electromagnetic commutation
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710059234.7A CN106704567B (en) | 2017-01-24 | 2017-01-24 | A kind of uninterrupted hydraulic gear-shifting device of power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710059234.7A CN106704567B (en) | 2017-01-24 | 2017-01-24 | A kind of uninterrupted hydraulic gear-shifting device of power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704567A CN106704567A (en) | 2017-05-24 |
| CN106704567B true CN106704567B (en) | 2019-05-14 |
Family
ID=58909673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710059234.7A Active CN106704567B (en) | 2017-01-24 | 2017-01-24 | A kind of uninterrupted hydraulic gear-shifting device of power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704567B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725940A (en) * | 2018-07-17 | 2020-01-24 | 河南省瑞歌传动机械有限公司 | Gear box |
| CN110425264B (en) * | 2019-09-04 | 2024-02-06 | 山东雷沃传动有限公司 | Control system and control method for electrohydraulic control gearbox |
| CN112178172A (en) * | 2020-09-18 | 2021-01-05 | 安徽江淮汽车集团股份有限公司 | Double-clutch multi-gear gearbox and electric automobile |
| WO2023092589A1 (en) * | 2021-11-29 | 2023-06-01 | 舍弗勒技术股份两合公司 | Transmission mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4947974A (en) * | 1988-01-15 | 1990-08-14 | Deere & Company | Fast fill hydraulic clutch |
| CN2069945U (en) * | 1989-12-19 | 1991-01-23 | 南昌矿山机械研究所 | Soft start hydraulic shifting gearbox |
| US5651288A (en) * | 1995-10-02 | 1997-07-29 | Twin Disc, Incorporated | Hydraulically operated friction clutch with shift shock prevention and method of using same |
| CN102537329A (en) * | 2012-02-06 | 2012-07-04 | 三一重工股份有限公司 | Power gear shift speed change bridge and engineering machinery |
| CN103062241A (en) * | 2012-12-28 | 2013-04-24 | 山推工程机械股份有限公司 | Integrated structure clutch applied to gearbox |
| CN203670730U (en) * | 2013-11-26 | 2014-06-25 | 重庆长兴工业有限公司 | Hydraulic gear shifter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006312956A (en) * | 2005-05-06 | 2006-11-16 | Toyota Motor Corp | Fastening control device of automatic transmission |
-
2017
- 2017-01-24 CN CN201710059234.7A patent/CN106704567B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4947974A (en) * | 1988-01-15 | 1990-08-14 | Deere & Company | Fast fill hydraulic clutch |
| CN2069945U (en) * | 1989-12-19 | 1991-01-23 | 南昌矿山机械研究所 | Soft start hydraulic shifting gearbox |
| US5651288A (en) * | 1995-10-02 | 1997-07-29 | Twin Disc, Incorporated | Hydraulically operated friction clutch with shift shock prevention and method of using same |
| CN102537329A (en) * | 2012-02-06 | 2012-07-04 | 三一重工股份有限公司 | Power gear shift speed change bridge and engineering machinery |
| CN103062241A (en) * | 2012-12-28 | 2013-04-24 | 山推工程机械股份有限公司 | Integrated structure clutch applied to gearbox |
| CN203670730U (en) * | 2013-11-26 | 2014-06-25 | 重庆长兴工业有限公司 | Hydraulic gear shifter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106704567A (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106704567B (en) | A kind of uninterrupted hydraulic gear-shifting device of power | |
| US5950787A (en) | Rotation clutch device for automatic transmission | |
| JP5097880B2 (en) | Dual clutch transmission | |
| US4106369A (en) | Oil pressure control system for an automatic transmission system | |
| CN103717952B (en) | Reversal valve | |
| CN100489349C (en) | Oil-pressure control device of automatic speed variator | |
| JP2004526922A (en) | Switching transmission | |
| KR100309653B1 (en) | Power shift transmissions, especially two-speed planetary transmissions | |
| GB1067282A (en) | A fluid pressure control system for controlling a variable speed planetary transmission | |
| WO1995000353A1 (en) | Hydraulic control system of automatic transmission for vehicle | |
| CN102549314A (en) | Method for operating a drive train | |
| JPS6213849A (en) | Control mechanism for speed change shift in automatic transmission | |
| KR101012470B1 (en) | Multi stage automatic transmission | |
| KR101012469B1 (en) | Multi stage automatic transmission | |
| CN210014003U (en) | Hydraulic control system and front-mounted rear-drive hydraulic automatic gearbox comprising same | |
| US5224908A (en) | Automatic transmission | |
| EP0453577B1 (en) | Clutch device in automatic transmission | |
| JP3806817B2 (en) | Hydraulic control system for automatic transmission for vehicles | |
| CN206563075U (en) | A kind of uninterrupted hydraulic gear-shifting device of power for automobile | |
| KR20200062744A (en) | Oil pressure control system for a vehicle with an auto transmission and an auto transmission | |
| KR100357593B1 (en) | Hydraulic control system for automatic transmission | |
| US4065985A (en) | Oil pressure control system for an automatic transmission system | |
| CN209583538U (en) | Fork truck hydraulic transmission box and its hydraulic system | |
| CN109826945B (en) | Hydraulic automatic flow speed selecting system | |
| US5616091A (en) | Integrated hydro-mechanical multiple lockup transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |