CN107035849A - Gearbox lubrication cooling system and gearbox - Google Patents
Gearbox lubrication cooling system and gearbox Download PDFInfo
- Publication number
- CN107035849A CN107035849A CN201710373213.2A CN201710373213A CN107035849A CN 107035849 A CN107035849 A CN 107035849A CN 201710373213 A CN201710373213 A CN 201710373213A CN 107035849 A CN107035849 A CN 107035849A
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- Prior art keywords
- control valve
- lubrication
- oil
- oil circuit
- gearbox
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0442—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control for supply in case of failure, i.e. auxiliary supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Present invention is disclosed a kind of gearbox lubrication cooling system, including fuel tank, working connection, main oil pressure control valve, lubricant passage way, the lubrication oil circuit is divided into two-way, is respectively used to clutch lubrication and gearbox inner bearing lubrication；The output end of the lubrication flow control valve connects a residual stress control valve by oil circuit, the lubrication oil circuit also passes through the residual stress control valve and a draining oil communication, the draining oil circuit output end leads to the fuel tank, and the output end of the lubrication flow control valve is connected with the spring terminal of the residual stress control valve.The beneficial effects are mainly as follows：The dynamic equilibrium of self feed back and hydraulic oil and spring by flow control valve, it is ensured that lubricating and cooling system of the present invention has stable pressure and flow；By provided with residual pressure control valve, limiting the MTP of lubricating and cooling system of the present invention, it is ensured that the safety of lubricating and cooling system.
Description
Technical field
The present invention relates to a kind of gearbox double clutch and the lubricating and cooling of bearing, specifically applied to wet type it is double from
The lubrication of clutch and bearing, particularly a kind of lubricating system of gearbox.
Background technology
The effect of speed changing box lubricating system is carried to the double clutch and bearing element inside speed changer or the position of slip
For lubricating oil, it is ensured that the fluid lubrication of rubbing surface, friction and wear is reduced, while being cooled down to lubricant housings.With society
Develop, science and technology progress, people are to the requirement more and more higher of driver comfort and fuel-economy type, the requirement to discharge standard
More strict, this promotes double clutch gearbox technology to be rapidly developed.Double clutch gearbox have unique structure and
Operation principle, the rotating speed of its operating mode complexity, gear and bearing is higher；Double clutch gear shift switching needs to control accurate, friction plate
The sliding control that rubs is needed when gear shift switches, is rubbed with the cunning of clutch, double clutch produces substantial amounts of heat, thus to lubrication with
Cooling system proposes higher requirement.
In terms of gearbox gear cooling and lubricating, in current double clutch gearbox, some are used or tradition is splashed
Formula lubricates, and due to being arranged gear train assembly, is limited to the principle of splash system lubrication, tooth shaft design and performance are carried
Huge challenge is gone out；Some also using compulsory lubricating system, but oil circuit and hardware configuration are sufficiently complex, to part
Design and producing technique propose higher requirement, such as Chinese patent CN203516692U, CN104196991B.Chinese patent
CN106321805A discloses a kind of lubrication oil circuit, but the lubrication oil circuit only only provides the cooling to clutch
Lubrication, and the flow and pressure of cutting oil pass through valve element control, lubricating cooling oil flow is uncontrollable, causes whole profit
Sliding cooling system efficiency is low.If clutch lubrication pressure is excessive, the separation of clutch can be caused and combined control difficulty occur,
In clutch control circuit pressure than in the case of relatively low, because lubrication pressure is too high, the feelings that clutch can be caused to combine
Condition occurs.
The content of the invention
The purpose of the present invention is to overcome the shortcomings of that prior art is present to be applied to wet-type dual-clutch and bearing there is provided one kind
Lubricating and cooling system and its gearbox.
The purpose of the present invention is achieved through the following technical solutions：
A kind of gearbox lubrication cooling system, including exported for providing the fuel tank of hydraulic oil, and by hydraulic oil from fuel tank
Working connection；Main oil pressure control valve for controlling main oil pressure, and the lubricant passage way exported from the main oil pressure control valve；
Connect the oil cooler and pressure filter of the lubricant passage way, and the lubricating cooling oil exported from the oil cooler and pressure filter
Road, the lubrication oil circuit is divided into two-way, is respectively used to clutch lubrication and gearbox inner bearing lubrication；It is described to be used for speed change
The lubrication oil circuit of case inner bearing lubrication is divided into two-way, respectively axle lubrication oil circuit and bearing lubrication cooling oil path, institute
The lubrication oil circuit for clutch lubrication is stated by forming clutch lubrication cooling oil path, institute after a lubrication flow control valve
State lubrication flow control valve by gear box control unit TCU come the size of control signal control valve electromagnetism portion electric current come regulating valve
Openings of sizes regulating valve openings of sizes, the output end of the lubrication flow control valve connects a residual stress control by oil circuit
Valve, the residual stress control valve, which includes a guide end and one, has the spring terminal of residual stress control valve spring, is located at respectively
The both sides of the residual stress control valve, the guide end of the residual stress control valve is connected with the lubrication oil circuit, institute
Lubrication oil circuit is stated also by the residual stress control valve and a draining oil communication, the draining oil circuit output end is led to
The fuel tank, the output end of the lubrication flow control valve is connected with the spring terminal of the residual stress control valve.
It is preferred that, the front and rear sides of the lubrication flow control valve are equipped with a small filter screen, be respectively the small filter screen in front side and
The small filter screen of rear side, the oil circuit tie point between the output end of the lubrication flow control valve and the residual stress control valve is located at
Between the small filter screen of rear side and clutch.
It is preferred that, the oil circuit between the output end of the lubrication flow control valve and the residual stress control valve spring end
Throttle orifice is provided with, throttle orifice is provided between the guide end of the residual stress control valve and the lubrication oil circuit.
It is preferred that, the lubricant passage way is provided with flow control valve, and the hydraulic oil of the lubricant passage way output passes through institute
State and be divided into two-way after flow control valve, wherein hydraulic oil overcomes flow control valve bullet through the dynamic flow control valve of throttle orifice pusher all the way
Valve element is moved to left after the spring force of spring, the second road hydraulic oil is divided into two-way again after throttle orifice, and the first via is after throttle orifice
Reach the spring terminal of the flow control valve, being worked with spring one moves to right the valve element of the flow control valve, thus with the right side
Pilot pressure one dynamic equilibrium of formation of side, hydraulic oil of the second tunnel output with steady pressure and flow, into measured lubrication
Oil circuit, the hydraulic oil of the measured lubrication oil circuit enters the oil cooler.
It is preferred that, a check valve in parallel on the inlet and outlet of fuel channel of the pressure filter.
It is preferred that, the measured lubrication oil circuit has a branch road, and the branch road is provided with one under case of by-pass valve effect
The by-passing valve of normal off, the branch road is in parallel with by the oil circuit of the oil cooler, and the by-passing valve has a guide end, the elder generation
Lead end and the measured lubrication oil communication.
It is preferred that, the main oil pressure control valve overcomes the master after having the guide end connected with the working connection, logical oil
Its valve element is moved to right after the spring force of the main oil pressure control valve spring of pressure control valve, one is additionally provided with the working connection has certainly
Guide's oil pressure cntrol guiding valve of feedback arrangement, stable pressure is formed by the hydraulic coupling at its guide end and the spring dynamic balance of spring terminal
The hydraulic oil of power, the hydraulic oil leads to the spring terminal of the main oil pressure control valve, the main oil pressure control valve by guide's oil circuit
Openings of sizes control the size of current of a magnetic valve to control by TCU.
It is preferred that, the guide's oil circuit is provided with small filter screen and throttle orifice.
Present invention further teaches a kind of gearbox lubrication cooling system, including for providing the fuel tank of hydraulic oil, and will
The working connection that hydraulic oil is exported from fuel tank, the oil pressure of the working connection is controlled by a main oil pressure control valve, the main oil pressure control
Exported in valve processed for lubricant passage way, the lubricant passage way flows through formation lubrication oil circuit after oil cooler and pressure filter, also wraps
Residual stress control valve and lubrication flow control valve are included, the lubrication oil circuit is divided into two-way, and the first via connects the remnants
The guide end of Stress Control valve；Second tunnel is separated into two-way, is respectively used to clutch lubrication and gearbox inner bearing lubrication；It is described
The lubrication oil circuit lubricated for gearbox inner bearing is divided into two-way, respectively axle lubrication oil circuit and bearing lubrication cooling
Oil circuit, the lubrication oil circuit for clutch lubrication is cold by forming clutch lubrication after the lubrication flow control valve
But oil circuit, the lubrication flow control valve is by gear box control unit TCU come control signal lubrication flow control valve electromagnetism portion
The size regulating valve openings of sizes of electric current, the output end of the lubrication flow control valve connects the residual stress control by oil circuit
The spring terminal of valve processed, the residual stress control valve passes through fuel tank described in a draining oil communication.
Present invention further teaches a kind of gearbox, including gearbox lubrication cooling system described above.
The beneficial effects are mainly as follows：
1st, the present invention is provided with flow control valve, is existed by the guide end self feed back of flow control valve, spring terminal feedback and spring force
The dynamic equilibrium of the axial direction of flow control valve, it is ensured that lubricating and cooling system of the present invention has stable pressure and flow；
2nd, the present invention pressure filter oil circuit in parallel be provided with check valve, it is ensured that pressure filter fail or block when be whole system
There is provided enough lubricating cooling oils, it is ensured that gearbox can continue to normal work；
3rd, oil circuit of the present invention after oil cooler and pressure filter series connection is provided with by-passing valve, it is ensured that when oil cooler occurs to block or this
When oil circuit is completely plugged, still there is enough hydraulic oil to provide enough lubricating cooling oils for the bearing and clutch of gearbox；
4th, the present invention is provided with residual pressure control valve, limits the MTP of lubricating and cooling system of the present invention, it is ensured that lubrication
The safety of cooling system；
5th, lubrication flow control valve is controlled using VFS magnetic valves in clutch lubrication oil circuit of the present invention, than using VBS electromagnetism
Valve control is more accurate, it is ensured that clutch has enough lubrication flows in sliding rub, and is shown the life-span of clutch
The raising of work；
6th, the present invention is provided with guide's oil pressure cntrol guiding valve, and stable guide's oil pressure is provided for main pressure control valve.
Brief description of the drawings
Technical solution of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1：The hydraulic diagram of gearbox lubrication cooling system of the present invention；
Wherein：A- working connections, b- guide's oil circuits, c- lubricant passage ways, d- measured lubrication oil circuits, e- lubrication oil circuits, f- drainings
Oil circuit, g- clutch lubrication cooling oil paths, h- axle lubrication oil circuits, j- bearing lubrication cooling oil paths；1- main oil pressure control valves,
2- guide's oil pressure cntrol guiding valve, 3- flow control valves, 4- by-passing valves, 5- residual pressure control valves, 6- lubrication flow control valves, 7-
Magnetic valve, 8- oil coolers, 9- check valves, 10- pressure filters；S1- main oil pressure control valve springs, S2- guide's oil pressure cntrol guiding valve bullet
Spring, S3- flow control valve springs, S4- case of by-pass valves, S5- residual pressure control valve springs, S6- lubrication flow control valve bullets
Spring；The small filter screens of F1/F2/F3-；H1/H2/H3/H4/H5/H6/H7/H8/H9/H10/H11- throttle orifices.
Embodiment
Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited to, structure that one of ordinary skill in the art is made according to these embodiments, method or functionally
Conversion is all contained in protection scope of the present invention.
As shown in figure 1, present invention is disclosed a kind of gearbox lubrication cooling system, the direction of arrow represents hydraulic oil in figure
Flow direction.The gearbox lubrication cooling system includes the fuel tank for being used to provide hydraulic oil, the main oil pressure control for controlling main oil pressure
Valve 1 processed, and the working connection a that hydraulic oil is exported from fuel tank and the lubricant passage way exported from the main oil pressure control valve 1
c.The main oil pressure control valve 1 has the guide end connected with the working connection a.When gearbox works, hydraulic oil passes through throttling
Hole H1 acts on the left side of the main oil pressure control valve 1, and now hydraulic oil plays guide, promotes the main oil pressure control valve
1 is moved to the right, and now the main oil pressure control valve 1 is worked in middle position, and working connection a is connected with lubricant passage way c, is whole profit
Sliding cooling system provides lubricating oil.
The lubricant passage way c is provided with flow control valve 3, the liquid with certain pressure of the lubricant passage way c outputs
Force feed is divided into two-way after the flow control valve 3, wherein hydraulic oil promotes 3 grams of flow control valve after throttle orifice H5 all the way
Valve element is moved to left after the spring force for taking flow control valve spring S3, the second road hydraulic oil is divided into two-way again after throttle orifice H6,
The first via reaches the spring terminal of the flow control valve 3 after throttle orifice H7, and being worked with spring one controls the flow
The valve element of valve 3 is moved to right, so that pilot pressure one dynamic equilibrium of formation with right side, the second tunnel output has steady pressure and flow
Hydraulic oil, after throttle orifice H6 into measured lubrication oil circuit d, the measured lubrication oil circuit d hydraulic oil pass through oil cooler 8
Pressure filter 10 is reached afterwards, forms lubrication oil circuit e.
Wherein, the pressure filter 10 is provided with check valve 9 in parallel, when pressure filter 10 is blocked, 9 dozens, check valve
Open, it is ensured that the lubrication of gearbox bearing and clutch.Meanwhile, set on the oil circuit that oil cooler 8 is connected with pressure filter 10
There is oil circuit in parallel, the oil circuit in parallel is provided with the by-passing valve 4 of the normal off under case of by-pass valve S4 effects, the by-passing valve 4 has
One guide end, the guide end is connected by throttle orifice H8 with the measured lubrication oil circuit d.When the oil cooler 8 and pressure filter
10 series connection oil circuits are when blocking, and the by-passing valve 4 is opened, it is ensured that gearbox has enough lubricating oil, make vehicle can be with
Continue to travel.
Lubrication oil circuit e after pressure filter is divided into two-way, is respectively used to clutch lubrication and gearbox inner bearing profit
It is sliding.Wherein, the lubrication oil circuit e lubricated for gearbox inner bearing is divided into two-way, respectively axle lubrication oil circuit h and axle
Hold and be equipped with throttle orifice on lubrication oil circuit j, every branch road.Purpose provided with throttle orifice is entered for whole lubricating and cooling system
Row pressurize, this is the common knowledge of throttle orifice, is hereafter repeated no more.
The lubrication oil circuit e for clutch cooling and lubricating after a lubrication flow control valve 6 by forming clutch
Device lubrication oil circuit g.Specifically, for clutch cooling and lubricating lubricating cooling oil through too small filter screen F2, by lubrication flow
After the accurate control of control valve 6, small filter screen F3 filtering is again passed by, enough lubricating cooling oils are provided for clutch.It is described
Lubrication flow control valve 6 controls the size of electromagnetism portion electric current come regulating valve opening by gear box control unit TCU control signals
Size.
The output end of the lubrication flow control valve 6 connects a residual stress control valve 5, the residual stress by oil circuit
Control valve 5, which includes a guide end and one, has residual stress control valve spring S5 spring terminal, respectively positioned at the residual stress
The both sides of control valve 5, the guide end of the residual stress control valve 5 is connected with the lubrication oil circuit e, the lubrication
Oil circuit e is also connected by the residual stress control valve 5 with a draining oil circuit f, and the draining oil circuit f output ends lead to the oil
Case, the output end of the lubrication flow control valve 6 is connected with the spring terminal of the residual stress control valve 5.The lubrication flow
Oil circuit tie point between the output end of control valve 6 and the residual stress control valve 5 be located at the small filter screen F3 of the rear side with from
Between clutch.Set on oil circuit between the output end of the lubrication flow control valve 6 and the spring terminal of residual stress control valve 5
There is throttle orifice H11, throttle orifice H10 is provided between the guide end of the residual stress control valve 5 and the lubrication oil circuit e.
The reason for so setting is：During due to clutch normal work, it is necessary to lubricating cooling oil it is less, in sliding rub
The lubrication Chuck Steak needed, in order to which the pressure for ensureing lubricating and cooling system is unlikely excessive, lubricating and cooling system of the present invention is set
There is the residual stress control valve 5.The main function of the residual stress control valve 5 is when clutch needs the lubrication of big flow
During cooling oil, lubrication flow control valve 6 is opened, and enough hydraulic oil is had in the spring terminal of residual stress control valve 5, described residual
The hydraulic oil of the spring terminal of residue stress control valve 5 and spring collective effect, make the residual stress control valve 5 be in cut-off state,
Lubricating oil will not draining to fuel tank；When the lubricating oil that clutch needs is less, because the lubricating oil of lubricating and cooling system is steady
Fixed flow, in order to which the pressure for ensureing whole lubricating and cooling system is unlikely excessive, the guide end of residual stress control valve 5 is in hydraulic pressure
It is moved to the left in the presence of oil, lubrication oil circuit e and draining oil circuit f UNICOMs, to fuel tank draining；When the lubrication oil circuit
When e pressure is smaller, in the presence of residual pressure control valve spring S5, residual stress control valve 5 moves right, and closes draining.
The setting of residual stress control valve 5 both ensure that system had enough flows, can guarantee that the pressure of lubrication is unlikely excessive again.
In the present invention, when the pressure of main oil pressure is excessive, the working position of main oil pressure control valve 1 can be in left position, now, main
A part of hydraulic oil draining in oil circuit a is to fuel tank, and another part hydraulic oil flows to lubricant passage way c.
In order to ensure valve 1 in high pressure not because draining excessively causes lubricating system hydraulic pressure shortage of oil, in main oil pressure control valve 1
Right-hand member, i.e. the spring terminal of main oil pressure control valve 1 is provided with guide's oil circuit b, passes through magnetic valve 7 and control spring terminal hydraulic fluid pressure
Size is controlled the location of valve 1.Wherein, guide's oil pressure cntrol guiding valve 2 passes through its guide end hydraulic coupling and spring terminal
Spring dynamic balance formation steady pressure hydraulic oil, for guide's oil circuit b provides stably pressure oil.Guide's oil pressure cntrol guiding valve
2 operation principle is exactly, by self feed back, to ensure that b oil circuits have stable pressure using the equilibrium relation of spring force and hydraulic coupling
Power.It is preferred that, the guide's oil circuit b is provided with small filter screen F1 and throttle orifice H2.
Whole lubricating and cooling system of the invention is by the control of series of valves, and whole lubricating and cooling system has sufficient all the time
Lubricating cooling oil, make the sufficiently cool lubrication of parts of transmission internal, it is ensured that gearbox can stablize normal work.
Present invention further teaches a kind of gearbox, include the gearbox lubrication cooling system of any form described above.
The present invention is provided with flow control valve, passes through the guide end self feed back of flow control valve, spring terminal feedback and spring force
In the dynamic equilibrium of the axial direction of flow control valve, it is ensured that lubricating and cooling system of the present invention has stable pressure and flow；
The present invention is provided with check valve in the oil circuit in parallel of pressure filter, it is ensured that provide foot when pressure filter fails or blocks for whole system
Enough lubricating cooling oils, it is ensured that gearbox can continue to normal work；Oil of the present invention after oil cooler and pressure filter series connection
Road is provided with by-passing valve, it is ensured that when oil cooler occurs to block or this oil circuit is completely plugged, it is change still to have enough hydraulic oil
The bearing and clutch of fast case provide enough lubricating cooling oils；The present invention is provided with residual pressure control valve, limits the present invention
The MTP of lubricating and cooling system, it is ensured that the safety of lubricating and cooling system；Lubrication flow in clutch lubrication oil circuit of the present invention
Control valve is controlled using VFS magnetic valves, more more accurate than using VBS solenoid valve controls, it is ensured that clutch rubs in cunning
When have enough lubrication flows, the life-span of clutch is significantly improved；The present invention is slided provided with guide's oil pressure cntrol
Valve, stable guide's oil pressure is provided for main pressure control valve.
It should be understood that, although the present specification is described in terms of embodiments, but not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say
Bright book is as an entirety, and the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included in the scope of the protection.
Claims (10)
1. gearbox lubrication cooling system, including
Fuel tank for providing hydraulic oil, and the working connection that hydraulic oil is exported from fuel tank（a）,
Main oil pressure control valve for controlling main oil pressure（1）, and from the main oil pressure control valve（1）The lubricant passage way of middle output
（c）,
Connect the lubricant passage way（c）Oil cooler（8）And pressure filter（10）, and from the oil cooler（8）And pressure filter
（10）The lubrication oil circuit of middle output（e）, the lubrication oil circuit（e）Be divided into two-way, be respectively used to clutch lubrication and
Gearbox inner bearing lubricates；
It is characterized in that：The lubrication oil circuit lubricated for gearbox inner bearing（e）It is divided into two-way, respectively axle lubricates
Cooling oil path（h）With bearing lubrication cooling oil path（j）, the lubrication oil circuit for clutch lubrication（e）Pass through a profit
Slip-stream control valve（6）Clutch lubrication cooling oil path is formed afterwards（g）, the lubrication flow control valve（6）Pass through gearbox control
Unit TCU control signal control valves processed（6）The size of electromagnetism portion electric current comes regulating valve openings of sizes, the lubrication flow control valve
（6）Output end pass through oil circuit connect a residual stress control valve（5）, the residual stress control valve（5）Including a guide end
There is residual stress control valve spring with one（S5）Spring terminal, respectively positioned at the residual stress control valve（5）Both sides, institute
State residual stress control valve（5）Guide end and the lubrication oil circuit（e）Connection, the lubrication oil circuit（e）Also lead to
Cross the residual stress control valve（5）With a draining oil circuit（f）Connection, the draining oil circuit（f）Output end leads to the fuel tank,
The lubrication flow control valve（6）Output end and the residual stress control valve（5）Spring terminal connection.
2. gearbox lubrication cooling system according to claim 1, it is characterised in that：The lubrication flow control valve（6）
Front and rear sides be equipped with a small filter screen（F2, F3）, it is the small filter screen in front side respectively（F2）With the small filter screen of rear side（F3）, the lubrication
Flow control valve（6）Output end and the residual stress control valve（5）Between oil circuit tie point be located at the small filter of the rear side
Net（F3）Between clutch.
3. gearbox lubrication cooling system according to claim 2, it is characterised in that：The lubrication flow control valve（6）
Output end and the residual stress control valve（5）Oil circuit between spring terminal is provided with throttle orifice（H11）, the residual stress
Control valve（5）Guide end and the lubrication oil circuit（e）Between be provided with throttle orifice（H10）.
4. according to any described gearbox lubrication cooling system of claims 1 to 3, it is characterised in that：The lubricant passage way（c）
It is provided with flow control valve（3）, the lubricant passage way（c）The hydraulic oil of output passes through the flow control valve（3）After be divided into
Two-way, wherein hydraulic oil is through throttle orifice all the way（H5）After promote flow control valve（3）Overcome flow control valve spring（S3）Bullet
Valve element is moved to left after spring force, the second road hydraulic oil passes through throttle orifice（H6）It is divided into two-way again afterwards, the first via passes through throttle orifice（H7）
After reach the flow control valve（3）Spring terminal, being worked with spring one makes the flow control valve（3）Valve element move to right,
So as to form a dynamic equilibrium with the pilot pressure on right side, hydraulic oil of the second tunnel output with steady pressure and flow enters
Measured lubrication oil circuit（d）, the measured lubrication oil circuit（d）Hydraulic oil enter the oil cooler（8）.
5. gearbox lubrication cooling system according to claim 4, it is characterised in that：The pressure filter（10）Enter fuel-displaced
A check valve in parallel on road（9）.
6. gearbox lubrication cooling system according to claim 5, it is characterised in that：The measured lubrication oil circuit（d）Tool
There is a branch road, the branch road is provided with one in case of by-pass valve（S4）The by-passing valve of the lower normal off of effect（4）, the branch road is with passing through
The oil cooler（8）Oil circuit it is in parallel, the by-passing valve（4）With a guide end, the guide end and measured lubrication oil
Road（d）Connection.
7. according to any described gearbox lubrication cooling system of claims 1 to 3, it is characterised in that：The main oil pressure control
Valve（1）With with the working connection（a）Overcome the main oil pressure control valve after the guide end of connection, logical oil（1）Main oil pressure control
Valve spring processed（S1）Spring force after move to right its valve element, the working connection（a）On be additionally provided with one have self feed back structure elder generation
Lead oil pressure cntrol guiding valve（2）, the hydraulic pressure of steady pressure is formed by the hydraulic coupling at its guide end and the spring dynamic balance of spring terminal
Oil, the hydraulic oil passes through guide's oil circuit（b）Towards the main oil pressure control valve（1）Spring terminal, the main oil pressure control valve（1）
Openings of sizes by TCU control a magnetic valve（7）Size of current control.
8. gearbox lubrication cooling system according to claim 7, it is characterised in that：The guide's oil circuit（b）It is provided with
Small filter screen（F1）And throttle orifice（H2）.
9. gearbox lubrication cooling system, including for providing the fuel tank of hydraulic oil, and hydraulic oil is exported from fuel tank
Working connection（a）, the working connection（a）Oil pressure by a main oil pressure control valve（1）Control, the main oil pressure control valve（1）In it is defeated
Go out for lubricant passage way（c）, the lubricant passage way（c）Flow through oil cooler（8）And pressure filter（10）Lubrication oil circuit is formed afterwards
（e）, it is characterised in that：Also include residual stress control valve（5）With lubrication flow control valve（6）, the lubrication oil circuit（e）
It is divided into two-way, the first via connects the residual stress control valve（5）Guide end；Second tunnel is separated into two-way, be respectively used to from
Clutch lubricates and gearbox inner bearing lubrication；The lubrication oil circuit lubricated for gearbox inner bearing（e）It is divided into two-way,
Respectively axle lubrication oil circuit（h）With bearing lubrication cooling oil path（j）, the lubrication oil circuit for clutch lubrication
（e）Pass through the lubrication flow control valve（6）Clutch lubrication cooling oil path is formed afterwards（g）, the lubrication flow control valve（6）
By gear box control unit TCU come regulating valve openings of sizes, the lubrication flow control valve（6）Output end connected by oil circuit
Connect the residual stress control valve（5）Spring terminal, the residual stress control valve（5）Pass through a draining oil circuit（f）Connection institute
State fuel tank.
10. gearbox, it is characterised in that：Including the gearbox lubrication cooling system as described in claim 1 or 2 or 3 or 4 or 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN108317240A (en) * | 2018-04-17 | 2018-07-24 | 国机重工集团常林有限公司 | Loading machine gearbox cooling oil flow control system |
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| CN110219971A (en) * | 2019-05-14 | 2019-09-10 | 中国第一汽车股份有限公司 | Automatic transmission electric hydaulic cooling and lubricating system and its control system |
| CN111038468A (en) * | 2019-12-20 | 2020-04-21 | 内蒙古北方重型汽车股份有限公司 | Residual pressure releasing device of electric drive mining dump truck brake and braking method thereof |
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