CN105971952B - The oil-filled hydraulic system of converter lockout for loading machine - Google Patents
The oil-filled hydraulic system of converter lockout for loading machine Download PDFInfo
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- CN105971952B CN105971952B CN201610473412.6A CN201610473412A CN105971952B CN 105971952 B CN105971952 B CN 105971952B CN 201610473412 A CN201610473412 A CN 201610473412A CN 105971952 B CN105971952 B CN 105971952B
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- oil
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- gear pump
- interface
- converter
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/047—Preventing foaming, churning or cavitation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Control Of Fluid Gearings (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The present invention discloses a kind of oil-filled hydraulic system of the converter lockout for loading machine, including：Repairing pipeline, circulation line and fluid torque-converter, are connected with fuel tank, first gear pump on repairing pipeline in turn；It is connected with second gear pump, heat exchanger and control valve, the outlet of heat exchanger and the outlet of first gear pump on circulation line in turn；There is oil inlet interface, oil out port, the first oil circuit interface and the second oil circuit interface, the outlet of oil inlet interface and first gear pump, oil out port is connected with the entrance that second gear pumps on control valve；There is fluid torque-converter locking interface to conciliate lock interface, and locking interface is connected with the first oil circuit interface, and solution lock interface is connected with the second oil circuit interface.The oil-filled hydraulic system of the converter lockout for loading machine of the present invention can be in reduction system oil pump power consumption, and the heat that torque-converters produces at work can be taken away, prevent the cavitation in fluid torque-converter and the damage of compensation hydraulic oil from leaking.
Description
Technical field
The invention belongs to engineering truck transmission field, more particularly to a kind of converter lockout for loading machine are oil-filled
Hydraulic system.
Background technology
Closed-end hydraulic torque converter is assembled in the transmission system of vehicle, and the power of engine is passed to gearbox.Close
Locking-type fluid torque-converter moment of torsion when the use on loading machine can make vehicle start is automatically increased, and is improved starting performance, is reduced
Impact when starting and gearshift, prevent engine overload and stop working suddenly, to improve driver comfort, barrier engine torque uneven
The fluctuation of even generation, reduces noise.But hydraulic power, compared with machine driving, efficiency is low, fuel economy is poor.In order to improve
The transmission efficiency of closed-end hydraulic torque converter is general using the fluid torque-converter with lockup clutch.It is existing that there is locking
The fluid torque-converter of clutch, which needs frequently to carry out at work locking, conciliates lock control and carrys out gear shift, and the oil pump in system not only needs
Meet to manipulate oil pressure, also to ensure the big flow that torque-converters needs, cause the power of oil pump consumption of engine big, and hydraulic pressure
Oil piping system easily overheats.
The content of the invention
To solve problem above, it is necessary to a kind of oil-filled hydraulic system of converter lockout for loading machine, full
While foot has the high pressure and big flow pump oil needed for the fluid torque-converter of lockup clutch, oil that can also be in reduction system
The power consumption of pump, and the heat that torque-converters produces at work can be taken away, prevent cavitation and benefit in fluid torque-converter
Repay the damage leakage of hydraulic oil.
In order to achieve the above object, the present invention is solved using following technical scheme.
A kind of oil-filled hydraulic system of converter lockout for loading machine, including：Repairing pipeline, circulation line and liquid
Power torque-converters, is connected with fuel tank, first gear pump on the repairing pipeline in turn；Second is connected with turn on the circulation line
Gear pump, heat exchanger and reversing control valve, the outlet of the heat exchanger and the outlet of first gear pump；It is described
There is oil inlet interface, oil out port, the first oil circuit interface and the second oil circuit interface, the oil inlet interface and institute on reversing control valve
The outlet of first gear pump is stated, the oil out port is connected with the entrance that the second gear pumps；The fluid torque-converter
Conciliate lock interface with locking interface, the locking interface is connected with the first oil circuit interface, it is described solve lock interface with it is described
Second oil circuit interface connects；Wherein, outlet and the commutation control of the outlet of the heat exchanger with first gear pump
Pipeline connection between the oil inlet interface of valve.
It is used for the oil-filled hydraulic system of converter lockout of loading machine according to the present invention, is pumped by second gear, heat is handed over
Parallel operation and reversing control valve and fluid torque-converter form an enclosed circulation pipeline, can reduce external dust and enter fuel feeding
The probability of system, has ensured the reliability of Hydraulic Elements in oil supply system, also reduce second gear pump power demand, second
The gear pump of low-pressure high-flowrate can be selected in gear pump, reduces power consumption of the engine on second gear pump, circulation line
In heat exchanger can also be system in hydraulic oil carry out circulation dissipate.The repairing pipeline that first gear pumps and fuel tank is formed is passed through
In reversing control valve in circulation line, first gear pump selects the gear pump with elevated pressures and smaller flow, predominantly
Circulation line supply manipulation oil, for supplementing the damage leakage of the hydraulic oil in enclosed circulation pipeline, in enclosed circulation pipeline
An initial pressure is established, the pressure of somewhere fluid in the working chamber of fluid torque-converter is not less than its evaporating pressure all the time, with
Prevent from producing cavitation in fluid torque-converter in enclosed circulation pipeline, first gear pump can intermittent duty, power consumption
It is low.
As preference, it is connected with the pipeline exported between the outlet of first gear pump of the heat exchanger
Side adapter road, the other adapter road are connected with the fuel tank, and overflow valve is connected with the other adapter road.
It is used for the oil-filled hydraulic system of converter lockout of loading machine according to the present invention, in order to avoid on hydraulic oil temperature
Rise and system pressure is excessive, overflow valve can pre-set a pressure value, when the charge oil pressure of first gear pump is more than overflow valve
After the pressure value of restriction, unnecessary hydraulic oil will be always maintained at the oil pressure in circulation line from overflow valve overflow oil return box
In the pressure value that overflow valve is limited.
As preference, it is connected with the first filtering between the port on the outlet of the heat exchanger and the other adapter road
Device.
It is used for the oil-filled hydraulic system of converter lockout of loading machine according to the present invention, the first filter may filter that
The impurity in hydraulic oil in circulation line.
As preference, it is connected with constant pressure valve between the port on the outlet of the first gear pump and the other adapter road.
It is used for the oil-filled hydraulic system of converter lockout of loading machine, the liquid of first gear pump output according to the present invention
Pressure oil can be according to the different operating mode of fluid torque-converter and its internal liquid stream and pressure by constant pressure valve supply torque-converters, constant pressure valve
Rule automatic adjustment flow of the oil supply system by torque-converters of power change, reaches the work for the heat dissipation capacity for reasonably controlling torque-converters
With.
As preference, throttling is connected with side by side on the pipeline exported between the constant pressure valve of the first gear pump
Valve and final cleaner.
It is used for the oil-filled hydraulic system of converter lockout of loading machine according to the present invention, final cleaner may filter that
Debris in repairing pipeline, when final cleaner is blocked, throttle valve can be used as bleed off circuit.
As preference, it is connected with the 3rd filter between the entrance of the fuel tank and first gear pump.
It is used for the oil-filled hydraulic system of converter lockout of loading machine according to the present invention, due to the work of engineering machinery
Environmental Dust is big, and the 3rd filter can be filtered out into the debris in fuel tank in advance.
As preference, being connected with check valve between the entrance of the second gear pump and outlet, the check valve enters
Mouth is connected with the entrance of second gear pump, and the outlet of the check valve is connected with the outlet of second gear pump.
According to the present invention be used for loading machine the oil-filled hydraulic system of converter lockout, check valve provide one with
The safety return circuit that is mutually juxtaposed of pipeline where second gear pump, check valve can reduce reversing control valve in commutation in circulation line
Hydraulic oil the impact that is pumped to system pipeline and second gear of pressure oscillation.
As preference, it is connected with side between the outlet of the second gear pump and the oil inlet interface of the reversing control valve
Logical safety valve, the entrance of the full by-pass relief valve are connected with the outlet that the second gear pumps, the outlet of the full by-pass relief valve
It is connected with the oil inlet interface of the reversing control valve.
It is used for the oil-filled hydraulic system of converter lockout of loading machine according to the present invention, full by-pass relief valve can be used to prevent
Only torque-converters produces cavitation, when the oil pressure of the interface of the hydraulic oil outflow in fluid torque-converter does not reach predetermined back pressure
When, full by-pass relief valve is not opened.
Brief description of the drawings
The present invention is described in further details with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the pipeline structure schematic diagram of the oil-filled hydraulic system of converter lockout of the present invention.
In Fig. 1：1 fuel tank；2 first gears pump；3 second gears pump；4 heat exchangers；5 reversing control valves；P oil inlets connect
Mouthful；T oil out port；A the first oil circuit interfaces；B the second oil circuit interfaces；6 fluid torque-converters；601 locking interfaces；602 solution lock interfaces；
7 overflow valves；8 first filters；9 constant pressure valves；10 throttle valves；11 final cleaners；12 check valves；13 full by-pass relief valves；14
Three filters.
Embodiment
As shown in Figure 1, a kind of converter lockout for loading machine provided according to an embodiment of the invention is oil-filled
Hydraulic system, including：Repairing pipeline, circulation line and fluid torque-converter 6, are connected with fuel tank 1, in turn on the repairing pipeline
One gear pump 2；It is connected with second gear pump 3, heat exchanger 4 and reversing control valve 5 on the circulation line in turn, the heat is handed over
The outlet of parallel operation 4 and the outlet of first gear pump 2；There is oil inlet interface P on the reversing control valve 5, fuel-displaced connect
The outlet of mouth T, the first oil circuit interface A and the second oil circuit interface B, the oil inlet interface P and first gear pump 2, institute
The entrance that oil out port T is stated with second gear pump 3 is connected；There is the fluid torque-converter 6 locking interface 601 to conciliate interlocking
Mouth 602, the locking interface 601 is connected with the first oil circuit interface A, and the solution lock interface 602 connects with second oil circuit
Mouth B connections；Wherein, the heat exchanger 4 outlet with the first gear pump 2 outlet and the reversing control valve 5 into
Pipeline connection between oily interface P.
In the embodiment above, by second gear pump 3,6 shape of heat exchanger 4 and reversing control valve 5 and fluid torque-converter
Into an enclosed circulation pipeline, the probability that external dust enters oil supply system can be reduced, ensured hydraulic pressure in oil supply system
The reliability of element, also reduces the power demand of second gear pump 3, and the gear of low-pressure high-flowrate can be selected in second gear pump 3
Pump, reduces power consumption of the engine on second gear pump 3, and the heat exchanger 4 in circulation line can also be in system
Hydraulic oil carries out circulation and dissipates.The repairing pipeline that first gear pump 2 and fuel tank 1 are formed is passed through the reversing control valve 5 in circulation line
In, first gear pump 2 selects the gear pump with elevated pressures and smaller flow, predominantly circulation line supply manipulation oil,
For supplementing the damage leakage of the hydraulic oil in enclosed circulation pipeline, to an initial pressure is established in enclosed circulation pipeline, make liquid
The pressure of somewhere fluid is not less than its evaporating pressure all the time in the working chamber of power torque-converters 6, to prevent in enclosed circulation pipeline
Fluid torque-converter 6 in produce cavitation, first gear pump 2 can intermittent duty, power consumption is low.
According to one embodiment of present invention, between the outlet of the heat exchanger 4 and the outlet of first gear pump 2
Pipeline on be connected with other adapter road, the other adapter road is connected with the fuel tank 1, and other take on road is connected with overflow valve
7。
In the embodiment above, in order to avoid hydraulic oil temperature rises and system pressure is excessive, overflow valve 7 can pre-set one
A pressure value, when first gear pump 2 charge oil pressure be more than overflow valve 7 limit pressure value after, unnecessary hydraulic oil will from overflow
Flow in 7 overflow oil return box 1 of valve, the oil pressure in circulation line is always maintained in the pressure value that overflow valve 7 is limited.
According to one embodiment of present invention, connect between the port on the outlet of the heat exchanger 4 and the other adapter road
It is connected to the first filter 8.
In the embodiment above, the first filter 8 is fine filter, and the first filter 8 may filter that the liquid in circulation line
Impurity in pressure oil.
According to one embodiment of present invention, between the port on the outlet of the first gear pump 2 and the other adapter road
It is connected with constant pressure valve 9.
In the embodiment above, the hydraulic oil of 2 output of first gear pump supplies torque-converters by constant pressure valve 9, and constant pressure valve 9 can
Passed through according to the rule automatic adjustment oil supply system of the different operating mode of fluid torque-converter 6 and its internal liquid stream and pressure change
The flow of torque-converters, has the function that the heat dissipation capacity for reasonably controlling torque-converters.
According to one embodiment of present invention, on the pipeline between the outlet of the first gear pump 2 and the constant pressure valve 9
It is connected with throttle valve 10 and final cleaner 11 side by side.
In any of the above item embodiment, final cleaner 11 is fine filter, and final cleaner 11 may filter that repairing pipe
Debris in road, when final cleaner 11 is blocked, throttle valve 10 can be used as bleed off circuit.
According to one embodiment of present invention, it is connected with the 3rd filtering between the entrance of the fuel tank 1 and first gear pump 2
Device 14.
In the embodiment above, since the working environment dust of engineering machinery is big, it is necessary to miscellaneous into some in fuel tank 1
Thing is filtered, and the 3rd filter 14 is coarse filter, and the 3rd filter 14 can be filtered out into the debris in fuel tank 1 in advance.
According to one embodiment of present invention, check valve 12 is connected between the entrance of the second gear pump 3 and outlet,
The entrance of the check valve 12 is connected with the entrance of second gear pump 3, the outlet of the check valve 12 and second tooth
The outlet connection of wheel pump 3.
In the embodiment above, check valve 12 provides the safety being mutually juxtaposed with second gear 12 place pipelines of pump
Circuit, check valve 12 can reduce the pressure oscillation of hydraulic oil of the reversing control valve 5 in commutation in circulation line to system pipeline
With the impact of second gear pump 3.
According to one embodiment of present invention, the second gear pumps 3 outlet and the oil inlet of the reversing control valve 5 connects
Full by-pass relief valve 13 is connected between mouth P, the entrance of the full by-pass relief valve 13 is connected with the outlet of second gear pump 3,
The outlet of the full by-pass relief valve 13 is connected with the oil inlet interface P of the reversing control valve 5.
In the embodiment above, full by-pass relief valve 13 can be used to prevent torque-converters from producing cavitation, when fluid torque-converter 6
When the oil pressure of the interface of interior hydraulic oil outflow does not reach predetermined back pressure, full by-pass relief valve 13 is not opened.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (5)
- A kind of 1. oil-filled hydraulic system of converter lockout for loading machine, it is characterised in that including：Repairing pipeline, is connected with fuel tank (1), first gear pump (2) on the repairing pipeline in turn；Circulation line, is connected with second gear pump (3), heat exchanger (4) and reversing control valve on the circulation line in turn (5), the outlet of the heat exchanger (4) pumps the outlet of (2) with the first gear, has on the reversing control valve (5) Have oil inlet interface (P), oil out port (T), the first oil circuit interface (A) and a second oil circuit interface (B), the oil inlet interface (P) with The outlet of the first gear pump (2), the oil out port (T) are connected with the entrance of second gear pump (3)；There is locking interface (601) to conciliate lock interface (602), the locking for fluid torque-converter (6), the fluid torque-converter (6) Interface (601) is connected with the first oil circuit interface (A), and the solution lock interface (602) connects with the second oil circuit interface (B) Connect；Wherein, the outlet of the outlet of the heat exchanger (4) and the first gear pump (2) and the reversing control valve (5) Pipeline connection between oil inlet interface (P)；Be connected with check valve (12) between the entrance of second gear pump (3) and outlet, the entrance of the check valve (12) with The entrance connection of the second gear pump (3), the outlet of the check valve (12) connect with the outlet of second gear pump (3) Connect；Bypass safety is connected between the outlet of the second gear pump (3) and the oil inlet interface (P) of the reversing control valve (5) Valve (13), the outlet that the entrance of the full by-pass relief valve (13) pumps (3) with the second gear are connected, the full by-pass relief valve (13) outlet is connected with the oil inlet interface (P) of the reversing control valve (5)；Other adapter road is connected with pipeline between the outlet of the heat exchanger (4) and the outlet of first gear pump (2), The other adapter road is connected with the fuel tank (1), and overflow valve (7) is connected with the other adapter road.
- 2. the oil-filled hydraulic system of the converter lockout according to claim 1 for loading machine, it is characterised in that institute State and be connected with the first filter (8) between the outlet of heat exchanger (4) and the port on the other adapter road.
- 3. the oil-filled hydraulic system of the converter lockout according to claim 1 for loading machine, it is characterised in that institute State and be connected with constant pressure valve (9) between the outlet of first gear pump (2) and the port on the other adapter road.
- 4. the oil-filled hydraulic system of the converter lockout according to claim 3 for loading machine, it is characterised in that institute State and be connected with throttle valve (10) and the second filter on the pipeline between the outlet of first gear pump (2) and the constant pressure valve (9) side by side Clear device (11).
- 5. the oil-filled hydraulic system of the converter lockout according to claim 4 for loading machine, it is characterised in that institute State fuel tank (1) and first gear pump (2) entrance between be connected with the 3rd filter (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473412.6A CN105971952B (en) | 2016-06-24 | 2016-06-24 | The oil-filled hydraulic system of converter lockout for loading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473412.6A CN105971952B (en) | 2016-06-24 | 2016-06-24 | The oil-filled hydraulic system of converter lockout for loading machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105971952A CN105971952A (en) | 2016-09-28 |
| CN105971952B true CN105971952B (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610473412.6A Active CN105971952B (en) | 2016-06-24 | 2016-06-24 | The oil-filled hydraulic system of converter lockout for loading machine |
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| CN (1) | CN105971952B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256521C (en) * | 2003-03-26 | 2006-05-17 | 浙江大学 | Frequency converter volume variable speed closed hydraulic control systems |
| JP4238916B2 (en) * | 2007-01-12 | 2009-03-18 | トヨタ自動車株式会社 | Hydraulic supply device for lock-up clutch |
| CN201747703U (en) * | 2010-05-25 | 2011-02-16 | 长沙中联重工科技发展股份有限公司 | Sealed hydraulic system |
| CN202251195U (en) * | 2011-10-17 | 2012-05-30 | 合肥力威汽车油泵有限公司 | Single-point compensation electromagnetic hydraulic combined control valve |
| CN103821192A (en) * | 2012-11-19 | 2014-05-28 | 西安志越机电科技有限公司 | Single-pump and single-motor closed type hydraulic system for travelling mechanism of land leveler |
| CN205173454U (en) * | 2015-10-20 | 2016-04-20 | 杭州前进齿轮箱集团股份有限公司 | Take traction clutch's torque converter hydraulic control system |
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2016
- 2016-06-24 CN CN201610473412.6A patent/CN105971952B/en active Active
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| CN105971952A (en) | 2016-09-28 |
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