CN105972194A - Lubricating cooling system for vehicle gear box - Google Patents
Lubricating cooling system for vehicle gear box Download PDFInfo
- Publication number
- CN105972194A CN105972194A CN201610490698.9A CN201610490698A CN105972194A CN 105972194 A CN105972194 A CN 105972194A CN 201610490698 A CN201610490698 A CN 201610490698A CN 105972194 A CN105972194 A CN 105972194A
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- Prior art keywords
- oil
- gear box
- fluid
- lubricating
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 43
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 31
- 239000012530 fluid Substances 0.000 claims description 97
- 239000002828 fuel tank Substances 0.000 claims description 75
- 238000006243 chemical reaction Methods 0.000 claims description 56
- 239000007788 liquid Substances 0.000 claims description 55
- 238000000605 extraction Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000000284 extract Substances 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 141
- 239000010687 lubricating oil Substances 0.000 abstract description 23
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 18
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 230000003134 recirculating effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
-
- 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
- F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
-
- 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
- F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
- F16H57/0404—Lubricant filters
-
- 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
- F16H57/0405—Monitoring quality of lubricant or hydraulic fluids
-
- 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
- F16H57/0436—Pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a lubricating cooling system for a vehicle gear box. The system comprises an oil tank, an oil feeding pump, a first variable frequency motor, a first temperature sensor, an oil returning pump, a second variable frequency motor and a controller, wherein the first variable frequency motor is used for driving the oil feeding pump to pump oil from the oil tank and then inputting to an oil inlet of the vehicle gear box; the first temperature sensor is used for measuring the temperature of the oil in the oil tank; the controller is used for acquiring various sensor signals in the system and performing feedback such as controlling and alarming. The system is particularly applicable to the lubricating of a vehicle working in a low-temperature environment, and the controller can control the first variable frequency motor to work at a low gear in the low-temperature environment; the torque of the first variable frequency motor is in match with the viscosity of oil, so that the service life of the motor can be prolonged; the oil returning pump is arranged and can be used for pumping lubricating oil accumulated in the gear box, and thus the lubricating oil can be effectively prevented from being accumulated in the gear box.
Description
Technical field
The present invention relates to vehicle gear box cooling system, particularly relate to a kind of lubrication for vehicle gear box cold
But system.
Background technology
Along with the development of exploitation of mineral resources industry, large-tonnage engineering truck demand is on the increase, in large-tonnage engineering
Hub reduction gear in vehicle upper gear box drives power big and compact conformation, causes gear-box caloric value the highest,
Reducer shell heat radiation cannot fully meet cooling requirement, outside part large-tonnage engineering truck decelerator begins with
The mode of circulation fuel feeding is lubricated and cools down.
The Chinese patent of Application No. 201320815164.0 discloses a kind of wheel side speed reducer lubrication heat radiation
System, including hydraulic pump group, driver element, filter element and cooling unit, driver element is with hydraulic pump group even
Connecing, the inlet port of hydraulic pump group is connected with the oil-out of wheel side speed reducer by oil pipe, hydraulic pump group fuel-displaced
Mouth is connected with the oil-in of filter element by oil circuit, and the oil-out of filter element passes through oil circuit and cooling unit
Oil-in connect, the oil-out of cooling unit is connected with the oil-in of wheel side speed reducer by oil circuit.This is special
Profit by arranging Pulvis Emolliens hot systems on wheel side speed reducer, use single oil pump at gear-box oil-in fuel feeding,
Oil return opening gravity oil return.Solve the technical barrier that the lubrication heat radiation of traveling vehicle wheel side speed reducer is not enough.But,
Prior art there is problems in that
(1) relatively low due to cooling lubricating oil inlet oil temperature, when starting lubricating system at low temperatures, oil temperature is very
Time low, oil viscosity is big, especially since vehicle general work is outdoor, low-down extremely in ambient temperature
In the case of, oil viscosity is very big, thus causes gravity oil return not smooth, causes lubricating oil to be constantly deposited in tooth
Inside roller box, make gear-box be internally formed high pressure thus cause fluid to be revealed, and long-time internal high pressure can be right
Sealing member brings infringement；
(2) existing oil pump drives motor torque to fix, owing to oil viscosity is poor when high temperature and cold-starting
Different relatively big, start motor during low temperature, actually required moment of torsion is more than Rated motor moment of torsion, motor be difficult to start and
It is easily damaged；And under high temperature, starting motor, actually required moment of torsion is much smaller than Rated motor moment of torsion.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of lubricating and cooling system for vehicle gear box,
Including: fuel tank, oil-feed pump, the first frequency conversion motor, the first temperature sensor, scavenge oil pump, the second variable-frequency electric
Machine and controller, wherein,
Described first frequency conversion motor is used for driving described oil-feed pump to extract fluid, the oil of extraction from described fuel tank
Liquid is input to the oil-in of vehicle gear box by in-line；
Described first temperature sensor is for measuring the oil liquid temperature in described fuel tank；
Described second frequency conversion motor is used for driving the fluid in described scavenge oil pump extraction vehicle gear box, extraction
Fluid enters into described fuel tank by return line；
Described controller is used for obtaining the oil liquid temperature that described first temperature sensor gathers, and according to described oil
Liquid temp regulates the rotating speed of described first frequency conversion motor.
Further, also including heater, described heater is for heating the fluid in described fuel tank；
Described controller is additionally operable to, when described oil liquid temperature is less than the threshold value preset, control the work of described heater,
And when described oil liquid temperature is higher than the threshold value preset, controls described heater and quit work.
Further, also include that cooler, described cooler are arranged in described in-line, be used for cooling down
Fluid in described in-line.
Further, also include that temperature-sensing valve and the first branch road, described first branch road and described in-line are in parallel；
Described temperature-sensing valve, for opening valve when the temperature measured is higher than the threshold value preset, makes fluid from described cooling
The in-line at device place flows out, and closes valve when the threshold value that the temperature measured not higher than is preset, and makes
Fluid is not passed through described cooler, flows out from described first branch road.
Further, described controller is additionally operable to be less than in the temperature of described first temperature sensor measurement preset
Threshold value time control described cooler and quit work.
Further, also include that the second temperature sensor, described second temperature sensor are used for measuring described returning
Oil liquid temperature in oil pipe line；Described controller is additionally operable to regulate according to the oil liquid temperature in described return line
The rotating speed of described second frequency conversion motor.
Further, being additionally provided with pressure transducer in described in-line, described pressure transducer is used for surveying
Measure the oil liquid pressure in described in-line；
Also including overflow valve and the second branch road, described overflow valve is arranged on described second branch road, described overflow
Valve, for opening when the oil liquid pressure that described pressure transducer is measured is higher than the threshold value preset, makes fluid from institute
State the second branch road and flow back to fuel tank.
Further, being additionally provided with filter in described in-line, described filter is for described oil-feed
Fluid in pipeline filters.
Further, also including differential pressure transmitter device, described differential pressure transmitter device is for measuring described filter
Sending alarm signal to controller when the pressure differential of both sides is more than setting value, described controller is for receiving
Cue is sent after the alarm signal that described differential pressure transmitter device sends.
Further, also include that liquid-level switch, described liquid-level switch are arranged in described fuel tank, be used for sensing
The height of fluid in described fuel tank.
Further, described fuel tank being additionally provided with air filter, described air filter is for entrance
The air of fuel tank filters.
Further, described return line is additionally provided with online particle collector, described online grain count
Device is for measuring the cleannes of fluid in return line.
Further, being additionally provided with drainage screen in described fuel tank, described drainage screen is arranged on described return line
Lower section.
Further, being additionally provided with oil-feed effusion meter in described in-line, described oil-feed effusion meter is used for surveying
Measure the fluid flow in described in-line；Described return line is additionally provided with return flow meter, described time
Oil flowmeter is for measuring the fluid flow in described return line；Described controller is additionally operable to described in basis enter
Measurement result described first frequency conversion motor of regulation of oil flowmeter and return flow meter and turning of the second frequency conversion motor
Speed.
Further, the first check valve and the second check valve are also included；Described first check valve is arranged on described
On in-line, for the fluid one-way flow making described oil-feed pump extract；Described second check valve is arranged on
On described return line, for the fluid one-way flow making described scavenge oil pump extract.
Further, also include that three-temperature sensor, described three-temperature sensor are arranged on described oil-feed
Pipeline is near one end of described vehicle gear box, for measuring the temperature of fluid in in-line.
Further, described drainage screen is magnetic filtration screen.
Implement the present invention, have the advantages that
(1) present invention is by arranging the first temperature sensor and the first frequency conversion motor, it is possible to monitor fuel tank in real time
In oil temperature, regulate the rotating speed of the first frequency conversion motor according to oil temperature, the first frequency conversion motor when making high temperature and low temperature
Work at different rates, so that motor is operated on suitable rotating speed, protect motor, extend motor
Life-span.The present invention is especially suitable in low temperature environment, when the oil temperature in fuel tank is less than the temperature preset,
Controller controls the first frequency conversion motor and is operated in low or first gear；When the oil temperature in fuel tank is higher than the temperature preset,
Controller controls the first frequency conversion motor and is operated in top gear, so that the moment of torsion of the first frequency conversion motor glues with oily
Property matches, thus extends electrical machinery life.
(2) present invention is provided with heater, it is possible to when oil temperature in fuel tank is too low, be heated to properly by oil
Temperature, contribute to fluid flowing, reduce fluid viscosity, thus effectively alleviate the first frequency conversion of oil-feed pump
The pressure of motor.
(3) present invention is provided with scavenge oil pump, it is possible to the lubricating oil piled up in extraction gear-box, promotes to make gear
Lubricating oil in case successfully flows back in fuel tank, efficiently avoid lubricating oil accumulation in gear-box.From
And solve lubricating oil in prior art and be deposited in inside gear-box, make gear-box be internally formed high pressure thus lead
Cause fluid is revealed, and long-time internal high pressure damages the problems such as gearbox seals part.The present invention is particularly suitable
Lubrication when vehicle works at low ambient temperatures, when starting lubricating system at low temperatures, oil when oil temperature is the lowest
Viscosity big, thus cause gravity oil return smooth, cause lubricating oil to be constantly deposited in inside gear-box, make tooth
Roller box is internally formed high pressure thus causes fluid to be revealed, and sealing member can be brought infringement by long-time internal high pressure.
Scavenge oil pump is set, it is possible to the lubricating oil piled up in extraction gear-box, promotes to make the lubricating oil in gear-box smooth
Flow back in fuel tank, efficiently avoid lubricating oil accumulation in gear-box.
(4) present invention is provided with temperature-sensing valve and cooler, and temperature-sensing valve detects when oil temperature is higher, controls fluid
Flow through cooler cooling, when oil temperature is the highest, controls fluid and flow out from the branch road in parallel with cooler, thus have
Effect ground controls the oil temperature of in-line output and is maintained at rational temperature range, improves the cooling effect of system.
(5) present invention provides and arranges the second temperature sensor and the second frequency conversion motor, it is possible to according to the temperature of oil return
The rotating speed of degree regulation the second frequency conversion motor, when making high temperature and low temperature, the first frequency conversion motor works at different rates,
So that motor is operated on suitable rotating speed, protect motor, extend the life-span of motor.
(6) present invention is provided with pressure transducer in in-line, and arranges overflow valve, works as in-line
In oil pressure too high time, discharge a part of fluid by overflow valve, thus by the oil pressure cntrol in in-line
In the range of reasonably, improve the safety and stability of system.
(7) present invention arranges filter in in-line, it is possible to effectively enter the fluid in in-line
Row filters, thus filters the impurity in in-line, improves the purity of fluid, is effectively prevented from fluid
The damage that vehicle gear box is caused by impurity.
(8) present invention is provided with differential pressure transmitter device at the two ends of filter, and differential pressure transmitter device is filtered by measurement
The oil liquid pressure of device both sides is poor, it is provided that going out the information of filter, such as filter work is the most normal, if
Need to change filter element, thus provide the user useful information, it is ensured that filter normally works, improve system
Stability.
(9) present invention arranges liquid-level switch in fuel tank, using the teaching of the invention it is possible to provide liquid level information, when liquid level is too low,
Controller control system quits work, thus avoids because of the too low damage causing oil-feed pump of liquid level；Work as fuel tank
In fluid too high time, alert, remind operator fluid to be adjusted, thus effectively
Protection oil-feed pump, improves the safety of system.
(10) present invention arranges air filter on fuel tank, it is possible to filter the air entering fuel tank,
Avoid the dust in air, impurity to enter fuel tank, it is ensured that the purity of fluid, be effectively prevented from fluid
The damage that vehicle gear box is caused by impurity.
(11) present invention arranges online particle collector in return line, it is possible in monitoring oil return in real time
Impurity content, remind operator change the fluid in fuel tank in time when impurity content is higher, it is to avoid contain
The fluid having a large amount of impurity enters in vehicle gear box, and vehicle gear box is caused damage.
(12) present invention arranges magnetic filtration screen in fuel tank, owing in vehicle gear box, the impurity of iron content is relatively
Many, use magnetic filtration screen can effectively adsorb the impurity in oil return.
(13) present invention also sets up oil-feed effusion meter in in-line, arranges oil return stream in return line
Gauge, it is possible to detection oil inlet quantity and recirculating oil quantity.It addition, controller is according to described oil-feed effusion meter and oil return stream
The measurement result of gauge regulates described first frequency conversion motor and the rotating speed of the second frequency conversion motor, when oil inlet quantity with return
When the difference of oil mass is excessive, adjust the first frequency conversion motor low-speed running, so that oil inlet quantity and recirculating oil quantity keep
In the range of reasonably.
(14) present invention provides and arranges three-temperature sensor, it is possible to detect inlet oil temperature in real time.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art and advantage, below will
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that under,
Accompanying drawing during face describes is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the system that the embodiment of the present invention one provides；
Fig. 2 is the structural representation of the system that the embodiment of the present invention two provides；
In figure: 1-fuel tank, 2-heater, 3-the first temperature sensor, 4-liquid-level switch, 5-air filter,
6-oil-feed pump, 7-the first frequency conversion motor, 8-the first check valve, 9-overflow valve, 10-differential pressure transmitter device, 11-mistake
Filter, 12-temperature-sensing valve, 13-cooler, 14-three-temperature sensor, 15-pressure transducer, 16-oil-feed stream
Gauge, 17-the second frequency conversion motor, 18-scavenge oil pump, 19-the second check valve, 20-return flow meter, 21-second
Temperature sensor, the online particle collector of 22-, 23-drainage screen, 24-controller.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work on the premise of the every other embodiment that obtained, broadly fall into the scope of protection of the invention.
Embodiment one:
As it is shown in figure 1, the invention provides a kind of lubricating and cooling system for vehicle gear box, including:
Fuel tank 1, oil-feed pump the 6, first frequency conversion motor the 7, first temperature sensor 3, scavenge oil pump the 18, second frequency conversion
Motor 17 and controller 24.
Described first frequency conversion motor 7 is used for driving described oil-feed pump 6 to extract fluid from described fuel tank 1, takes out
The fluid taken is input to the oil-in of vehicle gear box by in-line；Wherein, fluid is for for vehicle
The lubricating fluid that gear-box is lubricated and cools down, fluid viscosity at low temperatures is the biggest.Heretofore described oil
Liquid refers to the lubricating oil for being lubricated vehicle gear box.
Described first temperature sensor 3 is arranged in fuel tank, for measuring the oil liquid temperature in described fuel tank 1.
Described second frequency conversion motor 17 is used for the fluid driving described scavenge oil pump 18 to extract in vehicle gear box,
The fluid of extraction enters into described fuel tank 1 by return line.Specifically, scavenge oil pump 18 is arranged on vehicle
At the oil-out of gear-box.Owing to cooling lubricating oil inlet oil temperature is relatively low, start lubricating system at low temperatures
Time, when oil temperature is the lowest, oil viscosity is big, thus causes gravity oil return not smooth, causes lubricating oil to be constantly deposited in
Inside gear-box, make gear-box be internally formed high pressure thus cause fluid to be revealed, and long-time internal high pressure meeting
Sealing member is brought infringement.Scavenge oil pump 18 is set, it is possible to the lubricating oil piled up in extraction gear-box, promotes to make
Lubricating oil in gear-box successfully flows back in fuel tank, efficiently avoid lubricating oil accumulation in gear-box.
The described controller 24 oil liquid temperature in the fuel tank obtaining described first temperature sensor 3 collection,
And the rotating speed of described first frequency conversion motor 7 is regulated according to described oil liquid temperature.
Specifically, the rotating speed of the first frequency conversion motor 7 is adjustable, for example, it is possible to have top gear and low or first gear,
It is of course also possible to include multiple gear, the present invention does not limits.When the oil temperature in fuel tank is less than the temperature preset
When spending, controller 24 controls the first frequency conversion motor and is operated in low or first gear；When the oil temperature in fuel tank higher than preset
During temperature, controller 24 controls the first frequency conversion motor and is operated in top gear, so that the torsion of the first frequency conversion motor
Square matches with the viscosity of oil, thus extends electrical machinery life.
Being also provided with heater 2 in fuel tank, described heater is for carrying out the fluid in described fuel tank 1
Heating；Described controller 24 is additionally operable to, when described oil liquid temperature is less than the threshold value preset, control described heating
Device 2 works, and when described oil liquid temperature is higher than the threshold value preset, controls described heater 2 and quit work.
The present invention is provided with heater, it is possible to when oil temperature in fuel tank is too low, oil is heated to suitable temperature,
Contribute to fluid flowing, reduce fluid viscosity, thus effectively alleviate the pressure of the first frequency conversion motor of oil-feed pump
Power.Especially since the fluid of present invention extraction is lubricating fluid, under low temperature, viscosity is the highest, and extracts fluid
Oil-feed pump be unable to reach the highest moment of torsion due to its proper property, therefore, heater is set in advance to low
Temperature fluid carries out heating and ensure that oil-feed pump normally works.
In order to improve the cooling performance of system, also include that cooler 13, described cooler 13 enter described in being arranged on
In oil pipe line, for cooling down the fluid in described in-line.The another one effect of cooler 13 is,
In low temperature environment, the oil temperature in fuel tank is too low, in order to protect the first frequency conversion motor, needs to add oil
Heat, and the oil through heating may have higher temperature, affects cooling effect, sets in in-line
Put cooler and can solve the problem that this problem, it is ensured that the oil to vehicle gear box input maintains relatively low temperature.
Certainly, it is contemplated that when the oil temperature in in-line itself is the highest, it is not necessary to cooled down by cooler
Situation, the system of the present invention also includes temperature-sensing valve 12 and the first branch road, described first branch road and described oil-feed
Pipeline is in parallel；Described temperature-sensing valve 12, for opening valve when the temperature measured is higher than the threshold value preset, makes oil
The liquid in-line from described cooler 13 place flows out, and the threshold value not higher than preset in the temperature measured
Time close valve, make fluid be not passed through described cooler 13, from described first branch road flow out.
Also include that the second temperature sensor 21, described second temperature sensor 21 are used for measuring described return line
In oil liquid temperature；Described controller 24 is additionally operable to according to the oil liquid temperature regulation in described return line described
The rotating speed of the second frequency conversion motor 17.
In order to prevent the oil pressure in filling conduit too high, the described in-line of the present invention is also provided with
Pressure transducer 15, described pressure transducer 15 is for measuring the oil liquid pressure in described in-line；
System also includes that overflow valve 9 and the second branch road, described overflow valve 9 are arranged on described second branch road,
Described overflow valve 9 was beaten when the oil liquid pressure measured at described pressure transducer 15 is higher than the threshold value preset
Open, make fluid flow back to fuel tank 1 from described second branch road.It can be seen that overflow valve 9 and first is single from Fig. 1
Being separately positioned in two pipelines in parallel to valve 8, in oil-feed pump 6, the fluid of extraction is through the first check valve 8
Upwards one-way flow, when oil pressure is too high, during higher than the threshold value preset, overflow valve 9 is opened, a part of fluid
It flow back into fuel tank 1 from the second branch road.The present invention is provided with pressure transducer and overflow valve in in-line,
When the oil pressure in in-line is too high, discharge a part of fluid by overflow valve, thus by in-line
Oil pressure cntrol in the range of reasonably, improve the safety and stability of system.
Can also arrange filter 11 in described in-line, described filter 11 is for described in-line
In fluid filter.The present invention arranges filter in in-line, it is possible to effectively to in-line
In fluid filter, thus filter the impurity in in-line, improve the purity of fluid, effectively keep away
The damage that vehicle gear box is caused by the impurity in oil-free.
Preferably, system can also include that differential pressure transmitter device 10, described differential pressure transmitter device 10 are used for
Measure to described filter 11 both sides pressure differential be more than setting value time send alarm signal to controller 24,
Described controller 24 is for sending prompting letter after receiving the alarm signal that described differential pressure transmitter device 10 sends
Number.Such as filter work is the most normal, if needs to change filter element, thus provides the user useful letter
Breath, it is ensured that filter normally works, improves the stability of system.
System can also include that liquid-level switch 4, described liquid-level switch 4 are arranged in described fuel tank 1, are used for feeling
Survey the height of fluid in described fuel tank 1.Liquid-level switch can be floating ball type switch, it is also possible to be electronic type liquid
Bit switch, the present invention does not limits, as long as liquid level relative altitude can be obtained, is all applicable to the present invention.This
Invention arranges liquid-level switch in fuel tank, using the teaching of the invention it is possible to provide liquid level information, and when liquid level is too low, controller controls
System stalls, thus avoid because of the too low damage that oil-feed pump is caused of liquid level；When the fluid mistake in fuel tank
Gao Shi, system can be reminded operator to be adjusted fluid with alert, thus effectively protect
Protect oil-feed pump, improve the safety of system.
Being additionally provided with air filter 5 on described fuel tank 1, described air filter 5 is for entering fuel tank
Air filters.
The present invention can also arrange air filter 5 on fuel tank 1, filters the air entering fuel tank,
Avoid the dust in air, impurity to enter fuel tank, it is ensured that the purity of fluid, be effectively prevented from fluid
The damage that vehicle gear box is caused by impurity.
Owing to prior art typically all arranging off-line particle collector, it is impossible to obtain back well cuts in real time
Content.The system of the present invention is additionally provided with online particle collector 22 in described return line, is used for measuring
The cleannes of fluid in return line, remind operator to change in time in fuel tank when impurity content is higher
Fluid, it is to avoid the fluid containing a large amount of impurity enters in vehicle gear box, and vehicle gear box is caused damage.
Being additionally provided with drainage screen 23 in described fuel tank 1, described drainage screen 23 is arranged under described return line
Side.Owing in vehicle gear box, the impurity of iron content is more, drainage screen is preferably magnetic filtration screen, uses magnetic
Drainage screen can adsorb the impurity in oil return effectively.Certainly, the drainage screen of other forms is also applied for this
Bright, if the impurity that can filter in oil return, for example, it is possible to import the position of fuel tank 1 at return line
Install fine and closely woven drainage screen.
The present invention is also provided with oil-feed effusion meter 16 in described in-line, and oil-feed effusion meter preferably sets
Put in the position near oil-in；Described oil-feed effusion meter 16 is for measuring the fluid stream in described in-line
Amount；Being additionally provided with return flow meter 20 in described return line, described return flow meter is used for measuring described returning
Fluid flow in oil pipe line；Described controller 24 is additionally operable to according to described oil-feed effusion meter 16 and oil return stream
The measurement result of gauge 20 regulates described first frequency conversion motor 7 and the rotating speed of the second frequency conversion motor 17.
The present invention also sets up oil-feed effusion meter in in-line, arranges return flow meter in return line,
Oil inlet quantity and recirculating oil quantity can be detected.It addition, controller is according to described oil-feed effusion meter and return flow meter
Measurement result regulates described first frequency conversion motor and the rotating speed of the second frequency conversion motor, when oil inlet quantity and recirculating oil quantity
When difference is excessive, adjust the first frequency conversion motor low-speed running, so that oil inlet quantity and recirculating oil quantity are maintained at rationally
In the range of.
The system of the present invention also includes the first check valve 8 and the second check valve 19；Described first check valve 8 sets
Put on described in-line, for the fluid one-way flow making described oil-feed pump 6 extract；Described second is single
It is arranged on described return line to valve 8, for the fluid one-way flow making described scavenge oil pump 18 extract.
The present invention provide three-temperature sensor 14 is set, described three-temperature sensor 14 be arranged on described in enter
Oil pipe line is near one end of described vehicle gear box, it is possible to detect inlet oil temperature in real time.
Embodiment two:
As in figure 2 it is shown, the invention provides another lubricating and cooling system for vehicle gear box, bag
Include: fuel tank 1, oil-feed pump the 6, first frequency conversion motor the 7, first temperature sensor 3, scavenge oil pump 18, second
Frequency conversion motor 17 and controller 24.
Described first frequency conversion motor 7 is used for driving described oil-feed pump 6 to extract fluid from described fuel tank 1, takes out
The fluid taken is input to the oil-in of vehicle gear box by in-line；Wherein, fluid is for for vehicle
The lubricating fluid that gear-box is lubricated and cools down, fluid viscosity at low temperatures is the biggest.
Described first temperature sensor 3 is arranged in fuel tank, for measuring the oil liquid temperature in described fuel tank 1.
Described second frequency conversion motor 17 is used for the fluid driving described scavenge oil pump 18 to extract in vehicle gear box,
The fluid of extraction enters into described fuel tank 1 by return line.Specifically, scavenge oil pump 18 is arranged on vehicle
At the oil-out of gear-box.Owing to cooling lubricating oil inlet oil temperature is relatively low, start lubricating system at low temperatures
Time, when oil temperature is the lowest, oil viscosity is big, thus causes gravity oil return not smooth, causes lubricating oil to be constantly deposited in
Inside gear-box, make gear-box be internally formed high pressure thus cause fluid to be revealed, and long-time internal high pressure meeting
Sealing member is brought infringement.Scavenge oil pump 18 is set, it is possible to the lubricating oil piled up in extraction gear-box, promotes to make
Lubricating oil in gear-box successfully flows back in fuel tank, efficiently avoid lubricating oil accumulation in gear-box.
The described controller 24 oil liquid temperature in the fuel tank obtaining described first temperature sensor 3 collection,
And the rotating speed of described first frequency conversion motor 7 is regulated according to described oil liquid temperature.
Specifically, the rotating speed of the first frequency conversion motor 7 is adjustable, for example, it is possible to have top gear and low or first gear,
It is of course also possible to include multiple gear, the present invention does not limits.When the oil temperature in fuel tank is less than the temperature preset
When spending, controller 24 controls the first frequency conversion motor and is operated in low or first gear；When the oil temperature in fuel tank higher than preset
During temperature, controller 24 controls the first frequency conversion motor and is operated in top gear, so that the torsion of the first frequency conversion motor
Square matches with the viscosity of oil, thus extends electrical machinery life.
Being also provided with heater 2 in fuel tank, described heater is for carrying out the fluid in described fuel tank 1
Heating；Described controller 24 is additionally operable to, when described oil liquid temperature is less than the threshold value preset, control described heating
Device 2 works, and when described oil liquid temperature is higher than the threshold value preset, controls described heater 2 and quit work.
In order to improve the cooling performance of system, also include that cooler 13, described cooler 13 enter described in being arranged on
In oil pipe line, for cooling down the fluid in described in-line.The another one effect of cooler 13 is,
In low temperature environment, the oil temperature in fuel tank is too low, in order to protect the first frequency conversion motor, needs to add oil
Heat, and the oil through heating may have higher temperature, affects cooling effect, sets in in-line
Put cooler and can solve the problem that this problem, it is ensured that the oil to vehicle gear box input maintains relatively low temperature.
Certainly, it is contemplated that when the oil temperature in in-line itself is the highest, it is not necessary to cooled down by cooler
Situation, described controller 24 be additionally operable to described first temperature sensor 3 measure temperature less than preset
Control described cooler 13 during threshold value to quit work.
Embodiments of the invention two differ primarily in that the control to cooler 13, this enforcement with embodiment one
Example need not arrange temperature-sensing valve, but controller directly controls the opening and closing of cooler 13.Certainly, for
It is precisely controlled oil liquid temperature, the 4th temperature sensing can also be set in the fluid porch of cooler 13
Device, the remainder of system is identical with embodiment one, does not repeats them here.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, this
A little improvements and modifications are also considered as protection scope of the present invention.
Claims (17)
1. the lubricating and cooling system for vehicle gear box, it is characterised in that including: fuel tank (1),
Oil-feed pump (6), the first frequency conversion motor (7), the first temperature sensor (3), scavenge oil pump (18), the second change
Frequently motor (17) and controller (24), wherein,
Described first frequency conversion motor (7) is used for driving described oil-feed pump (6) to extract from described fuel tank (1)
Fluid, the fluid of extraction is input to the oil-in of vehicle gear box by in-line；
Described first temperature sensor (3) is used for measuring the oil liquid temperature in described fuel tank (1)；
Described second frequency conversion motor (17) is used for driving in described scavenge oil pump (18) extraction vehicle gear box
Fluid, the fluid of extraction enters into described fuel tank (1) by return line；
Described controller (24) is used for obtaining the oil liquid temperature that described first temperature sensor (3) gathers, and
The rotating speed of described first frequency conversion motor (7) is regulated according to described oil liquid temperature.
Lubricating and cooling system for vehicle gear box the most according to claim 1, it is characterised in that
Also including heater (2), described heater is for heating the fluid in described fuel tank (1)；Described
Controller (24) is additionally operable to, when described oil liquid temperature is less than the threshold value preset, control described heater (2)
Work, and when described oil liquid temperature is higher than the threshold value preset, controls described heater (2) and quit work.
Lubricating and cooling system for vehicle gear box the most according to claim 1, it is characterised in that
Also include that cooler (13), described cooler (13) are arranged in described in-line, be used for cooling down described
Fluid in in-line.
Lubricating and cooling system for vehicle gear box the most according to claim 3, it is characterised in that
Also include that temperature-sensing valve (12) and the first branch road, described first branch road and described in-line are in parallel；Described temperature
Control valve (12), for opening valve when the temperature measured is higher than the threshold value preset, makes fluid from described cooling
The in-line at device (13) place flows out, and closes valve closing when the threshold value that the temperature measured not higher than is preset
Door, makes fluid be not passed through described cooler (13), flows out from described first branch road.
Lubricating and cooling system for vehicle gear box the most according to claim 3, it is characterised in that
The temperature that described controller (24) is additionally operable to described first temperature sensor (3) is measured is less than the threshold preset
Control described cooler (13) during value to quit work.
Lubricating and cooling system for vehicle gear box the most according to claim 1, it is characterised in that
Also include that the second temperature sensor (21), described second temperature sensor (21) are used for measuring described oil return pipe
Oil liquid temperature in road；Described controller (24) is additionally operable to adjust according to the oil liquid temperature in described return line
Save the rotating speed of described second frequency conversion motor (17).
Lubricating and cooling system for vehicle gear box the most according to claim 1, it is characterised in that
Being additionally provided with pressure transducer (15) in described in-line, described pressure transducer (15) is used for measuring institute
State the oil liquid pressure in in-line；
Also include that overflow valve (9) and the second branch road, described overflow valve (9) are arranged on described second branch road,
Described overflow valve (9) is higher than, for the oil liquid pressure measured at described pressure transducer (15), the threshold value preset
Time open, make fluid flow back to fuel tank (1) from described second branch road.
Lubricating and cooling system for vehicle gear box the most according to claim 1, it is characterised in that
Being additionally provided with filter (11) in described in-line, described filter (11) is for described in-line
In fluid filter.
Lubricating and cooling system for vehicle gear box the most according to claim 8, it is characterised in that
Also including differential pressure transmitter device (10), described differential pressure transmitter device (10) is for measuring described filter (11)
The pressure differential of both sides sends alarm signal, described controller (24) more than during setting value to controller (24)
For sending cue after receiving the alarm signal that described differential pressure transmitter device (10) sends.
Lubricating and cooling system for vehicle gear box the most according to claim 1, it is characterised in that
Also include that liquid-level switch (4), described liquid-level switch (4) are arranged in described fuel tank (1), are used for sensing
The height of fluid in described fuel tank (1).
11. lubricating and cooling systems for vehicle gear box according to claim 1, it is characterised in that
Being additionally provided with air filter (5) on described fuel tank (1), described air filter (5) is for entrance
The air of fuel tank filters.
12. lubricating and cooling systems for vehicle gear box according to claim 1, it is characterised in that
Being additionally provided with online particle collector (22) in described return line, described online particle collector (22) is used
In measuring the cleannes of fluid in return line.
13. lubricating and cooling systems for vehicle gear box according to claim 1, it is characterised in that
Being additionally provided with drainage screen (23) in described fuel tank (1), described drainage screen (23) is arranged on described oil return pipe
The lower section on road.
14. lubricating and cooling systems for vehicle gear box according to claim 1, it is characterised in that
Being additionally provided with oil-feed effusion meter (16) in described in-line, described oil-feed effusion meter (16) is used for measuring institute
State the fluid flow in in-line；Described return line is additionally provided with return flow meter (20), described time
Oil flowmeter is for measuring the fluid flow in described return line；Described controller (24) is additionally operable to basis
The measurement result of described oil-feed effusion meter (16) and return flow meter (20) regulates described first frequency conversion motor
(7) rotating speed of and the second frequency conversion motor (17).
15. lubricating and cooling systems for vehicle gear box according to claim 1, it is characterised in that
Also include the first check valve (8) and the second check valve (19)；Described first check valve (8) is arranged on described
On in-line, it is used for the fluid one-way flow making described oil-feed pump (6) extract；Described second check valve (8)
It is arranged on described return line, is used for the fluid one-way flow making described scavenge oil pump (18) extract.
16. lubricating and cooling systems for vehicle gear box according to claim 1, it is characterised in that
Also include that three-temperature sensor (14), described three-temperature sensor (14) are arranged on described in-line
Near one end of described vehicle gear box, for measuring the temperature of fluid in in-line.
17. lubricating and cooling systems for vehicle gear box according to claim 13, its feature exists
In, described drainage screen (23) is magnetic filtration screen.
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| CN201610490698.9A CN105972194B (en) | 2016-06-28 | 2016-06-28 | A kind of lubricating and cooling system for vehicle gear box |
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|---|---|---|---|
| CN201610490698.9A CN105972194B (en) | 2016-06-28 | 2016-06-28 | A kind of lubricating and cooling system for vehicle gear box |
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| CN112762034A (en) * | 2021-02-10 | 2021-05-07 | 山西高行液压股份有限公司 | Ultra-precise hydraulic control method |
| CN113432026A (en) * | 2021-07-02 | 2021-09-24 | 湖南润捷科技有限公司 | Box-type part centralized lubricating system and oil treatment assembly |
| CN113432026B (en) * | 2021-07-02 | 2024-07-12 | 北京威治科技有限公司 | Box-type part centralized lubrication system and oil treatment assembly |
| CN113323739A (en) * | 2021-07-09 | 2021-08-31 | 天津大学 | Controllable engine lubricating oil cooling system and control method |
| CN113446391A (en) * | 2021-07-28 | 2021-09-28 | 智新科技股份有限公司 | Speed reducer lubricating oil system and using method thereof |
| CN114753999A (en) * | 2022-03-10 | 2022-07-15 | 烟台杰瑞石油装备技术有限公司 | Lubrication system |
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