CN106499743B - A kind of clutch pressure control structure of Hydrodynamic transmission - Google Patents
A kind of clutch pressure control structure of Hydrodynamic transmission Download PDFInfo
- Publication number
- CN106499743B CN106499743B CN201611170586.1A CN201611170586A CN106499743B CN 106499743 B CN106499743 B CN 106499743B CN 201611170586 A CN201611170586 A CN 201611170586A CN 106499743 B CN106499743 B CN 106499743B
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- China
- Prior art keywords
- piston
- oil duct
- pressure
- valve
- back pressure
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
Abstract
The invention discloses a kind of clutch pressure control structures of Hydrodynamic transmission, including piston shell, piston shell inside left is equipped with piston, piston left end is provided with the clutch being made of inner attrition piece and outside friction disc, piston left end outer is equipped with horizontal return spring by baffle limiting between piston and baffle；Piston shell inner right side is equipped with horizontal pressure regulating valve assemblies, and back pressure valve assembly is equipped with below pressure regulating valve assemblies；It is provided with oil inlet in the middle part of piston shell, it is provided with distributary base below oil inlet, low side is respectively left oil duct and right oil duct on the left of distributary base, left oil duct and right oil duct are connected with piston right side, right oil-passage inlet is placed in before pressure regulating valve assemblies, lower oil duct is also parallel on right oil duct, lower oil-passage inlet is located at pressure regulating valve assemblies tail portion and passes through back pressure valve assembly.The present invention can effectively solve the problems, such as that the conventional fluid torque shift of transmission time is long, shift shock is big.
Description
Technical field
The present invention relates to technical field of hydraulic more particularly to the field of hydraulic control of Hydrodynamic transmission, and in particular to
A kind of clutch pressure control structure of Hydrodynamic transmission.
Background technology
The clutch oil pressure control system of Hydrodynamic transmission is the key technology of Hydrodynamic transmission gearshift control, at present fluid power
There are two types of mode, one is the trimmer valves of design specialized to solve the confession of clutch, drained the oil for the clutch pressure control of speed changer
Journey, for controlling, clutch combines or release, another kind are to provide the shift of pilot control oil pressure cntrol with guide proportion solenoid valve
Guiding valve provides control signal, and control pilot control oil pressure by special circuit design to pilot solenoid valve, from
And clutch feed pressure is controlled, realize the combination or release of clutch.
When carrying out process control to clutch pressure using trimmer valve, its main feature is that simple in structure, but be usually exclusively for
Certain needs the equipment of gear shift buffering and designs, narrow application range.Clutch pressure control is carried out with guide proportion solenoid valve,
Different software can be selected to realize that shift is required for distinct device in the case where hardware is constant, the scope of application is wider, Yi Shi
It now automatically controls, but this system is more containing component, fragile, the influence factor for controlling process is more, to software, machining accuracy
High, maintenance cost height is required with oil cleanliness.This two ways, which exists, responds slower, the longer problem of shift time.
And be nowadays that the shorter shift time the better to the requirement of Hydrodynamic transmission, shift shock is the smaller the better, commonly from
Clutch cannot achieve shift time it is short while also have the characteristics that shift shock is small.
Invention content
The present invention is intended to provide a kind of clutch pressure control structure of Hydrodynamic transmission, to solve existing Hydrodynamic transmission
Existing narrow application range, rapid wear more containing component of uniting when using trimmer valve and guide proportion solenoid valve control gear shift sleeve
It is bad, influence factor is more, software and machining accuracy are required high, oil cleanliness require high, maintenance cost is high, response is relatively slow,
The problem that shift time is long, shift shock is big.
The present invention is achieved by following technical solution：
A kind of clutch pressure control structure of Hydrodynamic transmission, including piston shell, piston shell inside left are equipped with work
Plug, piston left end are provided with the clutch being made of inner attrition piece and outside friction disc, and piston left end outer is living by baffle limiting
Horizontal return spring is equipped between plug and baffle；Piston shell inner right side is equipped with horizontal pressure regulating valve assemblies, and pressure regulator valve is total
Back pressure valve assembly is installed at lower section；It is provided with oil inlet in the middle part of the piston shell, distributary base, distributary base are provided with below oil inlet
Left side is respectively just lowly left oil duct and right oil duct, and left oil duct and right oil duct are connected with piston right side, and right oil-passage inlet is set
Before pressure regulating valve assemblies, lower oil duct is also parallel on right oil duct, lower oil-passage inlet is located at pressure regulating valve assemblies tail portion and across the back of the body
Pressure valve assembly.
The pressure regulating valve assemblies include the pressure regulation valve plug for being fixed on piston shell right end, and portion is socketed with pressure regulator valve to pressure regulator valve beyond the Great Wall
Spring, pressure regulation valve spring left end are equipped with adjusting pressuring valve core.
The back pressure valve assembly includes fixed back pressure valve plug, and back pressure valve pin, back pressure valve pin are fitted in the middle part of back pressure valve plug
Perpendicular and top is equipped with back pressure valve block with pressure regulation valve plug, and back pressure valve pin outer cover is connected to back pressure valve spring, back pressure valve plug bottom
End is equipped with straight pin.
It is installed with exterior seal ring A between the piston and piston shell, exterior seal ring B is installed between piston and distributary base.
The piston inside opposite with piston shell is installed with inner seal ring.
The beneficial effects of the invention are as follows：
Compared with prior art, the clutch pressure control structure of Hydrodynamic transmission provided by the invention, passes through distributary base
It is two-layer configuration by clutch oil cylinder plunger designs, to carry out clutch oil cylinder oil pressure Discrete control, and second level piston action
Oil pressure is controlled by pressure regulating valve assemblies, and clutch draining is realized by back pressure valve assembly, makes oil after clutch plunger draining return
There are still the fluid of low-pressure in cylinder, can effectively avoid cavitating；And it is voltage-controlled compared to the clutch oil of traditional Hydrodynamic transmission
Scheme processed, the present invention have many advantages, such as that precise control, oil pressure be steady, fast response time, can effectively solve conventional fluid torque speed changer
The problem that shift time is long, shift shock is big.
Description of the drawings
Fig. 1 is the schematic diagram of throw-out-of clutch in the present invention；
Fig. 2 is the schematic diagram that clutch combines in the present invention；
In figure：1- inner attrition pieces, 2- outside friction discs, 3- baffles, 4- return springs, 5- inner seal rings, 6- pistons are close outside 7-
Seal A, 8- exterior seal ring B, 9- piston shell, 10- adjusting pressuring valve cores, 11- pressure regulation valve plugs, 12- pressure regulation valve springs, 13- back pressure valve blocks,
14- back pressure valve pins, 15- back pressure valve springs, 16- back pressure valve plugs, 17- straight pins, 18- distributary bases, P1- oilers, the left oil of P2-
Road, the right oil ducts of P3-, oil duct under P4-.
Specific implementation mode
Technical scheme of the present invention is described further with reference to the accompanying drawings and embodiments, but required protection domain
It is not limited to described；
As shown in Figure 1, the clutch pressure control structure of Hydrodynamic transmission provided by the invention, including piston shell 9, piston
9 inside left of shell is equipped with piston 6, and 6 left end of piston is provided with the clutch being made of inner attrition piece 1 and outside friction disc 2, piston
6 left end outers are limited by baffle 3, and horizontal return spring 4 is equipped between piston 6 and baffle 3；9 inner right side of piston shell is pacified
Equipped with horizontal pressure regulating valve assemblies, back pressure valve assembly is installed below pressure regulating valve assemblies；9 middle part of the piston shell is provided with oil inlet
P1,1 lower section of oil inlet P are provided with distributary base 18, and the low side in 18 left side of distributary base is respectively left oil duct P2 and right oil duct P3, left oil
Road P2 and right oil duct P3 are connected with 6 right side of piston, and right oil duct P3 entrances are placed in before pressure regulating valve assemblies, on right oil duct P3 also
It is parallel with lower oil duct P4, lower oil duct P4 entrances are located at pressure regulating valve assemblies tail portion and pass through back pressure valve assembly.
The pressure regulating valve assemblies include the pressure regulation valve plug 11 for being fixed on 9 right end of piston shell, are socketed with outside pressure regulation valve plug 11
Pressure regulation valve spring 12,12 left end of pressure regulation valve spring are equipped with adjusting pressuring valve core 10.
The back pressure valve assembly includes fixed back pressure valve plug 16, and 16 middle part of back pressure valve plug is fitted with back pressure valve pin 14, carries on the back
Pressure valve pin 14 is perpendicular with pressure regulation valve plug 11 and top is equipped with back pressure valve block 13, and counterbalance valve bullet is socketed with outside back pressure valve pin 14
Spring 15,16 bottom end of back pressure valve plug are equipped with straight pin 17.
It is installed with exterior seal ring A7 between the piston 6 and piston shell 9, is installed between piston 6 and distributary base 18 outer close
Seal B8.
The inside opposite with piston shell 9 of the piston 6 is installed with inner seal ring 5.
Embodiment：
When shift will engage clutch, clutch control oil enters from the oil inlet P 1 at 9 middle part of piston shell, is divided into two-way,
Entering left oil duct P2 all the way pushes piston 6 to move, and another way enters 10 end face oil duct of adjusting pressuring valve core, at this time the oil of right oil duct P3 with
13 oil duct of back pressure valve block communicates, and lower oil duct P4 is communicated with food tray.When piston 6 overcomes the elastic force of piston return spring 4 to be pushed away to the left
When dynamic, left oil duct P2 pressures incrementally increase, and push adjusting pressuring valve core 10 to overcome pressure regulation valve spring 12 when left oil duct P2 oil pressure increases to
Elastic force moves to right, at this time the connection of oil inlet P 1 and right oil duct P3, oil pressure collective effect of the piston 6 in left oil duct P2 and right oil duct P3
Under be moved to the left, until compressing inner attrition piece 1 and outside friction disc 2, passing power.
When wanting holdback clutch, the oil inlet P 1 of clutch control oil in left oil duct P2 and right oil duct P3 from piston shell 9
It releases, after adjusting pressuring valve core 10 is closed under the effect of pressure regulation valve spring 12, oil pressure is by pushing back pressure valve block 13 open in right oil duct P3
From lower oil duct P4 drainings, meeting bullet to initial position under the action of return spring 4 of piston 6 completes throw-out-of clutch.
Above-described embodiment is only the preferred embodiment of the present invention, is not intended to limit the scope of protection of the present invention, and
The nouns of locality such as left and right, upper and lower, inside and outside described in the present invention are merely for convenience of those skilled in the art understand that technical side
Case, not from the limited effect, all deformations made on the basis of technical scheme of the present invention, modification or equivalent replacement etc.,
Protection scope of the present invention should be fallen into.
Claims (5)
1. a kind of clutch pressure control structure of Hydrodynamic transmission, it is characterised in that：Including piston shell (9), piston shell (9) is interior
Piston (6) is installed on the left of portion, piston (6) left end is provided with the clutch being made of inner attrition piece (1) and outside friction disc (2),
Piston (6) left end outer is limited by baffle (3), and horizontal return spring (4) is equipped between piston (6) and baffle (3)；Piston
Shell (9) inner right side is equipped with horizontal pressure regulating valve assemblies, and back pressure valve assembly is equipped with below pressure regulating valve assemblies；The piston shell
(9) middle part is provided with oil inlet (P1), and distributary base (18) is provided with below oil inlet (P1), is distinguished with lower section on the left of distributary base (18)
For left oil duct (P2) and right oil duct (P3), left oil duct (P2) and right oil duct (P3) are connected with piston (6) right side, right oil duct
(P3) entrance is placed in before pressure regulating valve assemblies, and lower oil duct (P4) is also parallel on right oil duct (P3), and lower oil duct (P4) entrance is located at
Pressure regulating valve assemblies tail portion and pass through back pressure valve assembly.
2. the clutch pressure control structure of Hydrodynamic transmission according to claim 1, it is characterised in that：The pressure regulator valve
Assembly includes the pressure regulation valve plug (11) for being fixed on piston shell (9) right end, and pressure regulator valve spring is socketed with outside pressure regulation valve plug (11)
(12), pressure regulation valve spring (12) left end is equipped with adjusting pressuring valve core (10).
3. the clutch pressure control structure of Hydrodynamic transmission according to claim 1, it is characterised in that：The counterbalance valve
Assembly includes fixed back pressure valve plug (16), is fitted with back pressure valve pin (14) in the middle part of back pressure valve plug (16), back pressure valve pin (14) with
Pressure regulation valve plug (11) is perpendicular and top is equipped with back pressure valve block (13), and counterbalance valve spring is socketed with outside back pressure valve pin (14)
(15), back pressure valve plug (16) bottom end is equipped with straight pin (17).
4. the clutch pressure control structure of Hydrodynamic transmission according to claim 1, it is characterised in that：The piston
(6) it is installed with exterior seal ring A (7) between piston shell (9), exterior seal ring B is installed between piston (6) and distributary base (18)
(8)。
5. the clutch pressure control structure of Hydrodynamic transmission according to claim 1, it is characterised in that：The piston
(6) it is installed with inner seal ring (5) with the opposite inside of piston shell (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170586.1A CN106499743B (en) | 2016-12-16 | 2016-12-16 | A kind of clutch pressure control structure of Hydrodynamic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170586.1A CN106499743B (en) | 2016-12-16 | 2016-12-16 | A kind of clutch pressure control structure of Hydrodynamic transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106499743A CN106499743A (en) | 2017-03-15 |
| CN106499743B true CN106499743B (en) | 2018-11-02 |
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ID=58333183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611170586.1A Active CN106499743B (en) | 2016-12-16 | 2016-12-16 | A kind of clutch pressure control structure of Hydrodynamic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106499743B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943820B (en) * | 2021-02-07 | 2022-05-06 | 江苏新能源汽车研究院有限公司 | Improved centrifugal oil pressure eliminating mechanism, clutch and eliminating method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387731A (en) * | 1979-05-10 | 1983-06-14 | Dresser Industries, Inc. | Modulated transmission with modulator-load-piston loading at linear rate after full reset |
| CN2599318Y (en) * | 2003-02-26 | 2004-01-14 | 杭州前进齿轮箱集团有限公司 | Power transfer hydraulic speed variator |
| CN104879398A (en) * | 2015-05-27 | 2015-09-02 | 杭州前进齿轮箱集团股份有限公司 | Fast oil releasing structure for hydraulic clutch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5769160A (en) * | 1980-10-14 | 1982-04-27 | Honda Motor Co Ltd | Hydraulically operated non-step variable speed change gear for vehicle |
| US9046139B2 (en) * | 2012-12-21 | 2015-06-02 | Caterpillar Inc. | Clutch cooling system |
-
2016
- 2016-12-16 CN CN201611170586.1A patent/CN106499743B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387731A (en) * | 1979-05-10 | 1983-06-14 | Dresser Industries, Inc. | Modulated transmission with modulator-load-piston loading at linear rate after full reset |
| CN2599318Y (en) * | 2003-02-26 | 2004-01-14 | 杭州前进齿轮箱集团有限公司 | Power transfer hydraulic speed variator |
| CN104879398A (en) * | 2015-05-27 | 2015-09-02 | 杭州前进齿轮箱集团股份有限公司 | Fast oil releasing structure for hydraulic clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106499743A (en) | 2017-03-15 |
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