CN206563075U - A kind of uninterrupted hydraulic gear-shifting device of power for automobile - Google Patents
A kind of uninterrupted hydraulic gear-shifting device of power for automobile Download PDFInfo
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- CN206563075U CN206563075U CN201720106834.XU CN201720106834U CN206563075U CN 206563075 U CN206563075 U CN 206563075U CN 201720106834 U CN201720106834 U CN 201720106834U CN 206563075 U CN206563075 U CN 206563075U
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Abstract
The utility model discloses a kind of uninterrupted hydraulic gear-shifting device of power for automobile；Hydraulic cylinder is installed on input shaft, and hydraulic cylinder, which is provided with two valve element cavitys, two spool chamber bodies, is separately installed with the first linkage valve element and the second linkage valve element；The side of first linkage valve element and the second linkage valve element is piston structure, is sealed by linkage valve core seal ring, is provided with linkage valve element return spring, opposite side is cone structure；The face area of the conical surface side of first linkage valve element and the second linkage valve element is less than the face area of the other end；First linkage valve element is reversely installed with the second linkage valve element.The utility model switches for automobile gears, in shift process, it is possible to achieve power is not interrupted；After change gear, the oil pressure set up 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 utility model is related to a kind of gearshift, the more particularly to a kind of uninterrupted hydraulic gear-shifting dress of power for automobile
Put, it is specifically a kind of to realize that power is uninterrupted, the gearshift of gear interlock.
Background technology
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 automobile application,
Because motor itself possesses certain rotational speed and torque regulating power, from the aspect of cost performance, become using two grades to three gears
Fast device can meet use demand.The shift process of tradition machinery formula automatic transmission needs to pass through what is plucked gear, gear selecting and put into gear
Process, the problem of therefore, in shift process producing torque break, larger mechanical shock and longer shift time, reduces vapour
The acceleration and ride comfort of car.CVT, DCT speed changer can realize the function of power failure-free gearshift, but structure is more complicated,
Higher is required to manufacturing process.
Utility model content
Main purpose of the present utility model is that there is provided a kind of uninterrupted hydraulic gear-shifting device of power for automobile, energy
Enough realize that automobile power in shift process is uninterrupted, the function of gear interlock, and with relatively simple structure.
The uninterrupted hydraulic gear-shifting device of power involved by the utility model, passes through the control to the hydraulic cylinder piston direction of motion
System, so that the clutch steel disc and friction plate of both sides are separated and combined by set Shifting, both sides clutch
Separation and cohesive process realized by the valve element movement that links, it is not necessary to the process Jing Guo neutral, it is possible to achieve shift process
Middle power is not interrupted.If oil pressure is set up in the side of linkage valve element, linkage valve element will be promoted to opposite side by setting up the side of oil pressure
It is mobile, so that by conical surface pressure release of the opposite side oil pressure by the valve element that links, the interlock function of two gears can be realized.This practicality
The new involved uninterrupted gearshift critical component of power completes gearshift using two clutches, two linkage valve elements
Operation, with it is simple in construction the characteristics of.
In order to realize above-mentioned utility model purpose, the utility model employs following technical scheme：
A kind of uninterrupted hydraulic gear-shifting device of power for automobile：Hydraulic cylinder is installed on input shaft, is set on hydraulic cylinder
Have and the first linkage valve element and the second linkage valve element are separately installed with two valve element cavitys, two spool chamber bodies；First interstage valve
The side of core and the second linkage valve element is piston structure, is sealed by linkage valve core seal ring, is provided with linkage valve element return spring,
Opposite side is cone structure；The face area of the conical surface side of first linkage valve element and the second linkage valve element is less than the end of the other end
Face area；First linkage valve element is reversely installed with the second linkage valve element；First piston is provided with the hydraulic cylinder of first piston side to enter
Hydraulic fluid port, the hydraulic cylinder close to the first linkage valve element conical surface side is provided with the first oil-out；Is provided with the hydraulic cylinder of second piston side
Two piston oil inlets, the second oil-out is provided with close to the second linkage valve element conical surface side hydraulic cylinder；
The hydraulic cylinder two 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 and first piston connection, first piston return spring are installed on first
In piston return spring seat, first piston return spring seat is connected with hydraulic cylinder；Second piston return spring and second piston connect
Connect, second piston return spring is installed in second piston return spring seat, second piston return spring seat is connected with hydraulic cylinder；
First friction plate realized by the extruding of the first platen and loosening and the first steel disc combination and separation；Second friction plate passes through
The extruding of two platens and loosen realize and the second steel disc combination and separation；First friction plate and the first steel disc, the second friction plate
It is connected respectively with vehicle transmission gear with the second steel disc；
The hydraulic gear-shifting device at least includes two solenoid directional control valves, and at least two solenoid directional control valve one end all pass through mistake
Filter, oil pump and fuel tank are connected；The other end respectively with first piston oil inlet, second piston oil inlet, the first valve element oil inlet
With the connection of the second valve element oil inlet；First oil-out and the second oil-out are directly connected to fuel tank.
Further to realize the utility model purpose, it is preferable that it is described first linkage valve element and second linkage valve element be same
The rotation body structure of one appearance and size；First linkage valve element is installed in the linkage spool chamber body being connected with the first oil-out, is bored
Face end is installed in the linkage spool chamber body being connected with the second oil-out close to second piston side, the second linkage valve element, the conical surface
End is close to 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 clutch shaft bearing, is provided with the first steel disc, input shaft and is installed in first gear
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,
It is provided with second gear on the second steel disc, input shaft and the second friction plate is installed, the second steel disc and the activity of the second friction plate is even
Connect.
Preferably, first piston inner seal ring and first piston external seal are provided between the first piston and hydraulic cylinder
Circle；The second inner carrier sealing ring and the second outer piston sealing ring are respectively equipped between second piston and hydraulic cylinder.
Preferably, the vehicle transmission gear is planetary transmission；Gear box is fixed with vehicle frame, and casing leads to
Bearing is crossed to be connected with input shaft；First steel disc is connected with hydraulic cylinder, and the first friction plate is connected with casing；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
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 the 3rd
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
Connect and second piston oil inlet is connected to after the second check valve, the 3rd solenoid directional control valve connects the first valve element oil inlet and respectively
Two valve element 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 connects and first piston oil inlet is connected to after the first check valve, and the first valve element oil inlet connects the first electromagnetic switch
The outlet of valve；Second solenoid directional control valve connects and second piston oil inlet is connected to after the second check valve, and the second valve element oil inlet connects
Connect the outlet of the second solenoid directional control valve.
Preferably, it to valve is normally opened bi-bit bi-pass electromagnetic switch that first solenoid directional control valve, the second solenoid directional control valve, which are,
Valve；3rd solenoid directional control valve is two position, three-way electromagnetic change valve.
The linkage of the utility model first valve element, the side of the second linkage valve element are piston structure, are sealed by sealing ring, another
Side is the cone match on cone structure, with cylinder body, and sectional area of the linkage valve element close to conical surface side is less than piston structure side,
Linkage valve element moves left and right the hydraulic oil seal and draining for realizing conical surface side.First linkage valve element and the second linkage valve element are reversely pacified
Dress, links in the presence of hydraulic cylinder oil pressure, when hydraulic oil promotes the first linkage valve element to move right, and is set up on the left of hydraulic cylinder
Oil pressure, right side passes through the first linkage valve element conical surface pressure release；When hydraulic oil promotes the second linkage valve element to move to the left, hydraulic cylinder is right
Oil pressure is set up in side, passes on left the second linkage valve element conical surface pressure release, can realize both sides gear interlock.
First linkage valve element and the second linkage valve element are reversely installed, and symmetrical on input shaft.Can also be with input
Axial symmetry installs the linkage valve element of multiple directions unanimously and constitutes first group, for first grade of gearshift, is symmetrically installed with input shaft many
The consistent linkage valve element in individual direction constitutes second group, second group of linkage valve element and first group of linkage valve element installation direction on the contrary, with
In second gear gearshift.
The steel disc of the utility model first and the first friction plate, the second steel disc and the second friction plate, in shift process gradually
With reference to, need not move through the neutral gear stage, can realize power failure-free shift gears.
The course of work of the present utility model is as follows：
(1) neutral changes to one grade.During gearshift, the first solenoid directional control valve is opened, and the second solenoid directional control valve is closed, the 3rd electromagnetism
Reversal valve connects the first valve element oil inlet, then starts oil pump, and hydraulic oil enters first piston oil inlet by the first check valve
And the hydraulic cylinder in first piston side sets up oil pressure, oil is set up by the first valve element oil inlet and in the first linkage spool chamber body
Pressure.With the rising of oil pressure, the first linkage valve element overcomes the effect of the first linkage valve element return spring to move right to dominant bit
Put.Oil pressure continues to rise, and overcomes the effect of first piston return spring and promotes first piston to be moved to the left, and first piston is promoted
First platen causes the first friction plate and the first steel disc to combine, so as to change to one grade.Complete after gearshift, the first solenoid directional control valve is closed
Close, oil pump is closed, hydraulic cylinder pressurize in the presence of the first check valve of first piston side, the first linkage valve element is first
It is moved to the left in the presence of movable valve plug return spring, the hydraulic oil in spool chamber body returns to oil cylinder.
(2) one grades change to two grades.During gearshift, the second solenoid directional control valve is opened, and the first solenoid directional control valve is closed, the 3rd electromagnetism
Reversal valve connects the second valve element oil inlet, then starts oil pump, hydraulic oil begins setting up oil pressure into second piston oil inlet, leads to
Cross the second valve element oil inlet and set up oil pressure in the second linkage spool chamber body.Due to the face area of the conical surface side for the valve element that links
Less than the face area of the other end, during hydraulic oil rises, the second linkage valve element will be moved to the left, and second piston is to the right
Mobile, the hydraulic oil on the right side of hydraulic cylinder returns to fuel tank by the conical surface of the second linkage valve element into the second oil-out, so that liquid
Pressure release on the right side of cylinder pressure, oil pressure is gradually reduced, first piston gradually return, the first friction plate and second in the presence of return spring
Steel disc is gradually disengaged, and the second friction plate and the second steel disc are gradually combined, 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
Rise, the second linkage valve element is moved to the left to position, and second piston overcomes return spring active force to move right, and promotes the second platen to make
Obtain 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
Excessively, power output is uninterrupted for state.Complete after gearshift, the second solenoid directional control valve is closed, oil pump is closed, the liquid of second piston side
Cylinder pressure pressurize in the presence of the second check valve, the second linkage valve element is in the presence of the second linkage valve element return spring to moving to left
Dynamic, the hydraulic oil in spool chamber body returns to oil cylinder.
(3) two grades of change neutrals.Now, the first valve element oil inlet of the 3rd solenoid directional control valve connection, the first solenoid directional control valve,
Second solenoid directional control valve is closed, and then turns on oil pump, because the piston structure side sectional area for the valve element that links is more than conical surface side
Sectional area, the first linkage valve element moves right, and to enter first by the first linkage valve element conical flow fuel-displaced for hydraulic oil on the right side of hydraulic cylinder
Mouthful, second piston return in the presence of return spring, the second friction plate and the second steel disc are separated, system change neutral.
Neutral 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 change
Seemingly, one grade of change neutral is similar with two grades of change neutral situations.
Relative to prior art, the utility model has the following advantages that：
(1) by controlling the separation of two clutches and to be implemented in combination with power in the switching of gear, shift process uninterrupted.
(2) the linkage valve element of design makes that a gear can only be changed at any time, realizes the interlock function of gear.
(3) gearshift critical piece is completed using two clutches, two linkage valve elements, with simple in construction
Feature.
Brief description of the drawings
Fig. 1 is the structure principle chart of the uninterrupted gearshift of the power of the utility model embodiment 1.
Fig. 2 is Fig. 1 enlarged top view.
Fig. 2 a are the linkage valve element force diagrams of Fig. 2 first.
Fig. 2 b are that neutral changes Fig. 2 interstage valve core segment partial enlarged drawings during 1 gear.
Fig. 2 c are that 1 gear changes Fig. 2 interstage valve core segment partial enlarged drawings during 2 gears.
Fig. 2 d are that 2 gears change Fig. 2 interstage valve core segment partial enlarged drawings during neutral.
Fig. 3 is the structure principle chart of the uninterrupted gearshift of the power of the utility model embodiment 2.
Fig. 4 is the structure principle chart of the uninterrupted gearshift of the power of the utility model embodiment 3.
Embodiment
To more fully understand the utility model, the utility model is made further with reference to the accompanying drawings and examples
It is bright, but embodiment not limited to this of the present utility model.
Embodiment 1
A kind of uninterrupted hydraulic gear-shifting device of power for automobile, the two-shift automatic variable speed system applied to electric automobile
System, realizes the automatic switchover of two gears.
As shown in Figure 1, 2, a kind of uninterrupted gearshift of power is changed including fuel tank 1, oil pump 2, filter 3, the first electromagnetism
To valve 7, the second solenoid directional control valve 5, the 3rd solenoid directional control valve 43, the first check valve 6, the second check 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
47th, first piston inner seal ring 42, first piston exterior seal ring 15, first piston oil inlet 16, the first valve element oil inlet 17,
One piston 18, the first linkage linkage linkage valve element return spring 21, first of valve core seal ring 19, first of valve element 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
The 27, second platen 28 of piston return spring seat, the second steel disc 30, the second friction plate 29, second gear 24, clutch shaft bearing 9, hydraulic pressure
Cylinder 22, the first cylinder body bearing 41, the second cylinder body bearing 32, second bearing 31, second piston oil inlet 34, the second valve element oil inlet
36th, the 37, second linkage of the second oil-out 38, second linkage valve element 35, second linkage valve element return spring valve core seal ring 39.
First gear 10 is installed on input shaft 8 by clutch shaft bearing 9, and the first steel disc 11 is provided with 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 is connected, and first piston return spring 14 and first piston 18 are connected, and first piston return spring 14 is installed on the first work
Get back into a spring base 47, first piston return spring seat 47 is connected with hydraulic cylinder 22, and first piston 18 is installed on hydraulic cylinder 22
Interior side, is provided with first piston inner seal ring 42 and first piston exterior seal ring 15 between first piston 18 and hydraulic cylinder 22,
Sealed by the outer piston sealing ring 15 of plug sealing ring 42 and first in the first work.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 provided with 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 is connected, and second piston return spring 26 and second piston 25 are connected, and second piston return spring 26 is installed on the second work
Get back into a spring base 27, second piston return spring seat 27 is connected with hydraulic cylinder 22, and second piston 25 is installed on hydraulic cylinder 22
Interior opposite side, is respectively equipped with the second inner carrier 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 carrier sealing ring 40 and the second outer piston sealing ring 33.Second friction plate 29 passes through the second platen
28 extruding and loosen realize and the second steel disc 30 combination and separation.
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 pressure
Cylinder 22 is fixed on vehicle frame, provided with two valve element cavitys in hydraulic cylinder 22, and two valve element cavitys are rotation body structure, with input shaft
8 are arranged symmetrically.Two valve element cavitys are close to the first linkage valve element return spring 21 and the side of the second linkage valve element return spring 37
Closing, has the first valve element oil inlet 17 and the second valve element oil inlet 36.First is separately installed with two spool chamber bodies
Link the linkage valve element 35 of valve element 23 and second.The first linkage linkage valve element 35 of valve element 23 and second is the rotation of same appearance and size
Body structure, the first linkage linkage valve element 35 of valve element 23 and second is reversely installed.The first linkage linkage valve element 35 of valve element 23 and second
Side be piston structure, sealed by linkage valve core seal ring, be provided with linkage valve element return spring, opposite side be conical surface knot
Structure.First linkage valve element 23 is installed in the linkage spool chamber body being connected with the first oil-out 20, and conical surface end is close to second piston
25 sides, the second linkage valve element 35 is installed in the linkage spool chamber body being connected with the second oil-out 38, and conical surface end is close to first
The side of piston 18.First piston oil inlet 16 is provided with the hydraulic cylinder 22 of the side of first piston 18, is bored close to the first linkage valve element 23
The hydraulic cylinder 22 of surface side is provided with the first oil-out 20；Second piston oil inlet 34 is provided with the hydraulic cylinder 22 of the side of second piston 25,
The second oil-out 38 is provided with close to the second linkage conical surface side hydraulic cylinder 22 of valve element 35.
As shown in Figure 2 a, there is the part of hydraulic oil hatching to represent in hydraulic cylinder and establish hydraulic pressure, empty part is represented
Set up without hydraulic pressure.In order to promote the first linkage valve element to move, the thrust of the first linkage valve element 23 needs to meet following condition：
F1+F3＞ F2+F4
In formula, F1For the pressure of the first linkage left end face of valve element 23, F2For the bullet of the first linkage valve element return spring 21
Power, F3For the pressure of the first linkage conical surface of valve element 23, F4The pressure received for the first linkage its right end face of valve element 23.Above formula can table
The relation of linkage spool chamber body pressure and interstage valve core area is shown as, is shown below：
In formula, PlFor the pressure of the left side cavity of hydraulic cylinder 22, PrFor the pressure of the right side cavity of hydraulic cylinder 22, S1For first
The left side lifting surface area of movable valve plug 23, S2For the first linkage right side conical surface lifting surface area of valve element 23, S3For the right side of the first linkage valve element 23
End face lifting surface area, k1For the coefficient of elasticity of the first linkage valve element return spring 21, x1For the displacement of spring.
The second linkage both sides liquid pressure of valve element 35 is consistent with the relation of each several part lifting surface area and the first linkage valve element 23.
Fuel tank 1 is connected by oil duct with oil pump 2, and connects filter 3, and filter 3 connects the first solenoid directional control valve respectively
7th, the second solenoid directional control valve 5 and the 3rd solenoid directional control valve 43.First solenoid directional control valve 7, which is connected, is connected to the after the first check valve 6
One piston oil inlet 16, the second solenoid directional control valve 5 connects and second piston oil inlet 34 is connected to after the second check valve 4, the 3rd electricity
Magnetic reversal valve 43 connects the first valve element oil inlet 17 and the second valve element oil inlet 36 respectively.First oil-out 20 and the second oil-out
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 the first linkage linkage valve element 35 of valve element 23 and second is piston structure, is sealed by sealing ring, opposite side is
Cone match on cone structure, with cylinder body, sectional area of the linkage valve element close to conical surface side is less than piston structure side, linkage
Valve element moves left and right the hydraulic oil seal and draining for realizing conical surface side.
In Fig. 2, the one grade of output of the correspondence of first gear 10, the two grades of outputs of the correspondence of second gear 24.Link valve element and piston
Shown in initial position such as Fig. 2 b (1), top half is lower half in the partial enlarged drawing of first linkage valve element 23 one end, figure in figure
It is divided into the partial enlarged drawing of the one end of the second linkage valve element 35.When system changes to one grade from neutral, the first solenoid directional control valve 7 dozens
Open, the second solenoid directional control valve 5 is closed, the 3rd solenoid directional control valve 43 connects the first valve element oil inlet 17, then start oil pump 2, liquid
Force feed enters first piston oil inlet 16 by the first check valve 6 and the hydraulic cylinder 22 in the side of first piston 18 sets up oil pressure,
Oil pressure is set up by the first valve element oil inlet 17 and in the first linkage cavity of valve element 23.With the rising of oil pressure, the first interstage valve
Core 23 overcomes the effect of the first linkage valve element 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 promotes first piston 18 to be moved to the left, and first piston 18 promotes the first platen 13 to cause first
The steel disc 11 of friction plate 12 and first is combined, so that one grade is changed to, shown in state such as Fig. 2 b (2) now.Complete after gearshift, first
Solenoid directional control valve 7 is closed, and oil pump 2 is closed, the pressurize in the presence of the first check valve 6 of hydraulic cylinder 22 of the side of first piston 18,
First linkage valve element 23 is moved to the left in the presence of the first linkage valve element return spring 21, and the hydraulic oil in spool chamber body is returned to
Oil cylinder, shown in state such as Fig. 2 b (3) now.
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, the 3rd electromagnetic switch
Valve 43 connects the second valve element oil inlet 36, then starts oil pump 2, and hydraulic oil begins setting up oil into second piston oil inlet 34
Pressure, oil pressure is set up by the second valve element oil inlet 36 in the second linkage cavity of valve element 35.Due to the conical surface side for the valve element that links
Face area be less than the other end face area, hydraulic oil rise during, second linkage valve element 35 will be moved to the left,
Second piston 25 moves right, and the hydraulic oil on the right side of hydraulic cylinder 22 enters the second oil-out by the conical surface of the second linkage valve element 35
38 return to fuel tank 1, so that the right side pressure release of hydraulic cylinder 22, such as return in the presence of return spring of first piston 18, 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 are gradually combined, 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 the right side oil pressure of hydraulic cylinder 22, the second linkage valve element 35 is moved to the left in place, and second
Piston 25 overcomes return spring active force to move right, such as shown in Fig. 2 c (2), promotes the second platen 28 to cause the second friction plate 29
It is completely combined, system changes to two grades, in shift process, is moved with the second steel disc 30 between two gears by sliding wear state excessively
Power output is uninterrupted.Complete after gearshift, the second solenoid directional control valve 5 is closed, and oil pump 2 is closed, the hydraulic cylinder of the side of second piston 25
22 pressurizes in the presence of the second check valve 4, the second linkage valve element 35 in the presence of the second linkage valve element return spring 37 to
Move left, such as shown in Fig. 2 c (3), the hydraulic oil in spool chamber body returns to oil cylinder.
When changing to neutral for two grades, the 3rd solenoid directional control valve 43 connects the first valve element oil inlet 17, the first solenoid directional control valve
7th, the second solenoid directional control valve 5 is closed, and then turns on oil pump 2, because the piston structure side sectional area for the valve element that links is more than the conical surface
The sectional area of side, first linkage valve element 23 move right the right side hydraulic oil of hydraulic cylinder 22 pass through first linkage the conical flow of valve element 23
Enter the first oil-out 20, shown in the return in the presence of return spring of second piston 25, such as Fig. 2 d (1), the He of the second friction plate 29
Second steel disc 30 is separated, system change neutral.Change to after neutral, oil pump 2 is closed, the first linkage valve element 23 is in the first linkage valve element
It is moved to the left in the presence of return spring 21, the hydraulic oil in spool chamber body returns to oil cylinder.
Neutral 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 change
Seemingly, one grade of change neutral is similar with two grades of change neutral situations.
As shown in Fig. 2 the first output shaft gear 45 and the second output shaft gear 46 are disposed with output shaft 44, the first output
Shaft gear 45 and first gear 10 are engaged, 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 is combined, the power of input shaft 8 is delivered 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 are combined, the power of input shaft 8 is delivered to 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 first steel disc 11 are separated, while second rubs
When the steel disc 30 of pad 29 and second is separated, output that output shaft 44 is unpowered, is neutral.
Embodiment 2
As shown in figure 3, in electric automobile application, input shaft 8 is connected to the output shaft of motor, neutral can pass through control
Motor stops realizing, it may not be necessary to the 3rd 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 valve element oil inlet 17 connects the outlet of the first solenoid directional control valve 7；Second
Solenoid directional control valve 5 connects and second piston oil inlet 34 is connected to after the second check valve 4, the electricity of the second valve element oil inlet 36 connection second
The outlet of magnetic reversal valve 5.First oil-out 20 and the second oil-out 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, does not repeat 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,
Casing 9 is connected by bearing 8 with input shaft 32.First steel disc 10 is connected with hydraulic cylinder 24, and the first friction plate 11 connects with casing 9
Connect.Second steel disc 26 is installed on hydraulic cylinder 24, and hydraulic cylinder 24 is also the gear ring of planetary mechanism simultaneously, and the second friction plate 25 is installed
In on the sun gear 28 of planetary mechanism, sun gear 28 is fixed with input shaft 32.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.
The number of teeth of sun gear 28 is z1, the gear ring number of teeth on hydraulic cylinder 24 is z2If,System has following mode of operation：
(1) when neutral 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 piston hydraulic fluid port 34 into second and promotes second piston 23 to move right, and hydraulic oil is pushed away into the second valve element oil inlet 35
The second linkage valve element 36 is moved to left movement.As oil pressure rises, second piston 23, which is moved right, makes the second steel disc 26 and second rub
Pad 25 is combined, so that the gear ring on sun gear 28 and hydraulic cylinder 24 is rigidly connected, planet carrier 29 is exported with 1 gearratio.
Complete after gearshift, the second solenoid directional control valve 5 is closed, and oil pump 2 is closed, the second linkage return of valve element 36.
(2) one grades change two grades when, the first solenoid directional control valve 7 is opened, and the second solenoid directional control valve 5 is closed, oil pump open, liquid
Force feed enters the first valve element oil inlet and promotes the first linkage valve element 21 to move right, while hydraulic oil enters piston hydraulic fluid port into first
15 promote first piston 17 to left movement, and hydraulic oil is discharged from the first oil-out 20 is gone 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 are gradually combined, 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 and casing 9 on 24.As oil pressure rises, the second steel disc 26 and the second friction plate 25 divide completely
From first piston 17 is completely combined the first steel disc 10 and the first friction plate 11 to left movement, gear ring and case on hydraulic cylinder 24
Body 9 is fixed, and planet carrier 29 is exported with 1+ α gearratio, and due to the presence of sliding wear state, this process power output is uninterrupted.It is complete
Into after gearshift, the first solenoid directional control valve 7 is closed, and oil pump 2 is closed, the first linkage return of valve element 21.
Two grades of neutral change is similar with one grade of neutral change, and two grades of one grade of changes are similar with one grade of two grades of change.
Hydraulic system and the operation principle of linkage valve element are substantially the same manner as Example 1 in shift process, do not repeat herein.
Claims (10)
1. the uninterrupted hydraulic gear-shifting device of a kind of power for automobile, it is characterised in that hydraulic cylinder is installed on input shaft, liquid
Cylinder pressure, which is provided with two valve element cavitys, two spool chamber bodies, is separately installed with the first linkage valve element and the second linkage valve element；The
The side of one linkage valve element and the second linkage valve element is piston structure, is sealed by linkage valve core seal ring, is provided with linkage valve element
Return spring, opposite side is cone structure；The face area of the conical surface side of first linkage valve element and the second linkage valve element is less than
The face area of the other end；First linkage valve element is reversely installed with the second linkage valve element；It is provided with the hydraulic cylinder of first piston side
First piston oil inlet, the hydraulic cylinder close to the first linkage valve element conical surface side is provided with the first oil-out；The hydraulic pressure of second piston side
Second piston oil inlet is provided with cylinder, the second oil-out is provided with close to the second linkage valve element conical surface side hydraulic cylinder；
The hydraulic cylinder two ends are respectively equipped with first piston and second piston；First piston and second piston respectively with the first platen
With the connection of the second platen；First piston return spring and first piston connection, first piston return spring are installed on first piston
In return spring seat, first piston return spring seat is connected with hydraulic cylinder；Second piston return spring and second piston connection, the
Two piston return springs are installed in second piston return spring seat, and second piston return spring seat is connected with hydraulic cylinder；First
Friction plate realized by the extruding of the first platen and loosening and the first steel disc combination and separation；Second friction plate passes through the second pressure
The extruding of disk and loosen realize and the second steel disc combination and separation；First friction plate and the first steel disc, the second friction plate and
Two steel discs are connected with vehicle transmission gear respectively；
The hydraulic gear-shifting device at least includes two solenoid directional control valves, and at least two solenoid directional control valve one end all pass through filtering
Device, oil pump and fuel tank are connected；The other end respectively with first piston oil inlet, second piston oil inlet, the first valve element oil inlet and
Second valve element oil inlet is connected；First oil-out and the second oil-out are directly connected to fuel tank.
2. the uninterrupted hydraulic gear-shifting device of the power according to claim 1 for automobile, it is characterised in that described first
Linkage valve element and the rotation body structure that the second linkage valve element is same appearance and size；First linkage valve element be installed on it is first fuel-displaced
In the linkage spool chamber body of mouth connection, conical surface end is installed on and the second oil-out close to second piston side, the second linkage valve element
In the linkage spool chamber body of connection, conical surface end is close to first piston side.
3. the uninterrupted hydraulic gear-shifting device of the power according to claim 1 for automobile, it is characterised in that the hydraulic pressure
Cylinder is installed on input shaft by the support of the first cylinder body bearing and the second cylinder body bearing.
4. the uninterrupted hydraulic gear-shifting device of the power according to claim 1 for automobile, it is characterised in that the hydraulic pressure
Cylinder is fixed on vehicle frame.
5. the uninterrupted hydraulic gear-shifting device of the power according to claim 1 for automobile, it is characterised in that the vehicle
Transmission device is fixed axis gear transmission device；The gear includes first gear and second gear；First gear passes through first axle
Hold and be installed on input shaft, be provided with first gear on the first steel disc, input shaft and the first friction plate is installed, the first steel disc and
First friction plate is flexibly connected；Second gear is installed on input shaft by second bearing, and the second steel is provided with second gear
Second friction plate is installed, the second steel disc and the second friction plate are flexibly connected on piece, input shaft.
6. the uninterrupted hydraulic gear-shifting device of the power according to claim 5 for automobile, it is characterised in that described first
First piston inner seal ring and first piston exterior seal ring are provided between piston and hydraulic cylinder；Divide between second piston and hydraulic cylinder
She You not the second inner carrier sealing ring and the second outer piston sealing ring.
7. the uninterrupted hydraulic gear-shifting device of the power according to claim 1 for automobile, it is characterised in that the vehicle
Transmission device is planetary transmission；Gear box is fixed with vehicle frame, and casing is connected by bearing with input shaft；First
Steel disc is connected with hydraulic cylinder, and the first friction plate is connected with casing；Second steel disc is installed on hydraulic cylinder, and hydraulic cylinder is also simultaneously capable
The gear ring of star mechanism, the second friction plate is installed on the sun gear of planetary mechanism, and sun gear is fixed with input shaft；Planetary gear leads to
Planetary gear bearing is crossed to be installed on planet carrier.
8. the uninterrupted hydraulic gear-shifting device of the power according to claim 1 for automobile, it is characterised in that the electromagnetism
Reversal valve is three；Respectively the first solenoid directional control valve, the second solenoid directional control valve and the 3rd solenoid directional control valve；First electromagnetic switch
Valve is connected to first piston oil inlet after connecting the first check valve, and the second solenoid directional control valve, which is connected, is connected to the after the second check valve
Two piston oil inlets, the 3rd solenoid directional control valve connects the first valve element oil inlet and the second valve element oil inlet respectively.
9. the uninterrupted hydraulic gear-shifting device of the power according to claim 1 for automobile, it is characterised in that the electromagnetism
Reversal valve is two；Respectively the first solenoid directional control valve and the second solenoid directional control valve；The connection first of first solenoid directional control valve is unidirectional
First piston oil inlet is connected to after valve, the first valve element oil inlet connects the outlet of the first solenoid directional control valve；Second electromagnetic switch
Valve connects and second piston oil inlet is connected to after the second check valve, and the second valve element oil inlet connects going out for the second solenoid directional control valve
Mouthful.
10. the uninterrupted hydraulic gear-shifting device of the power for automobile according to claim 8 or claim 9, it is characterised in that described
It to valve is normally opened two-position two-way electromagnetic directional valve that first solenoid directional control valve, the second solenoid directional control valve, which are,；3rd solenoid directional control valve is
Two position, three-way electromagnetic change valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720106834.XU CN206563075U (en) | 2017-01-24 | 2017-01-24 | A kind of uninterrupted hydraulic gear-shifting device of power for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720106834.XU CN206563075U (en) | 2017-01-24 | 2017-01-24 | A kind of uninterrupted hydraulic gear-shifting device of power for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206563075U true CN206563075U (en) | 2017-10-17 |
Family
ID=60030125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720106834.XU Expired - Fee Related CN206563075U (en) | 2017-01-24 | 2017-01-24 | A kind of uninterrupted hydraulic gear-shifting device of power for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206563075U (en) |
-
2017
- 2017-01-24 CN CN201720106834.XU patent/CN206563075U/en not_active Expired - Fee Related
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Granted publication date: 20171017 Termination date: 20200124 |