CN106704276A - Hydraulic fan driving system - Google Patents
Hydraulic fan driving system Download PDFInfo
- Publication number
- CN106704276A CN106704276A CN201710056644.6A CN201710056644A CN106704276A CN 106704276 A CN106704276 A CN 106704276A CN 201710056644 A CN201710056644 A CN 201710056644A CN 106704276 A CN106704276 A CN 106704276A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- oil
- fan
- hydraulic oil
- fan driving
- 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.)
- Pending
Links
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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
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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
Abstract
The invention discloses a hydraulic fan driving system. The hydraulic fan driving system comprises a motor, a reversing valve set, a hydraulic oil tank, a fan driving pump and a control valve; an oil inlet O of the fan driving pump is connected with the hydraulic oil tank; an oil outlet P1 of the fan driving pump is connected with an oil inlet P2 of the reversing valve set; a control port X of the fan driving pump is connected with an oil inlet P3 of the control valve; an oil release port T1 of the fan driving pump and a motor oil release port T3 are connected back to the hydraulic oil tank; an oil outlet T4 of the control valve is connected with the hydraulic oil tank; an oil return port T2 of the reversing valve set is connected with the hydraulic oil tank; and oil outlets A1 and B1 of the reversing valve set are respectively connected with oil ports A2 and B2 of the motor. The hydraulic fan driving system prevents the reversing shock, guarantees the reliability of a fan and a fan system and prolongs the service life, the fan driving pump hardly outputs power during starting, and the power machine starting resistance is reduced. When the temperature of a medium in a radiator is lower, and the quick heating is needed, the fan is stopped rotating to shorten the temperature rising time of the medium in the radiator, so that the system efficiency is improved.
Description
Technical field
The present invention relates to a kind of engineering machinery hydraulic fan, specifically a kind of hydraulic fan drive system.
Background technology
At present, hydraulic fan drive system is increasingly popularized with its unique advantage in fan cooling system, while
For some need（For example when cooling system is cleared up）, it is necessary to fan operationally switches direction of rotation, fan is with certain speed
During rotation, commutation suddenly necessarily causes fan and fan drive system to impact, and fan and fan drive system can be damaged when serious.
Existing fans drive pump is engine direct drive, once startup begins to power output, increases the engine resistance of start.Liquid
Pressure fan drive system is used for driving fan formation moving air to be cooled down with to radiator, existing hydraulic fan drive system
Though rotation speed of the fan is had fan minimum speed by medium temperature control in radiator, when medium temperature is relatively low in radiator, need
When being rapidly heated, fan can not stop operating, and extend medium temperature rise time in radiator, reduce system effectiveness.
The content of the invention
For the problem that above-mentioned prior art is present, the present invention provides a kind of hydraulic fan drive system, solves existing liquid
Pressure fan drive system reversing impact, band is carried and started, the problem that can not be stopped operating during low temperature.
To achieve these goals, the technical solution adopted by the present invention is：A kind of hydraulic fan drive system, including horse
Up to, commutation valve group, hydraulic oil container, fans drive pump and control valve；The oil inlet O of the fans drive pump and hydraulic oil container phase
Even, the oil-out P1 of fans drive pump is connected with the oil inlet P 2 of commutation valve group, control mouth X and the control valve of fans drive pump
Oil inlet P 3 is connected, and the drain tap T1 and motor drain tap T3 of fans drive pump take back hydraulic oil container；It is described to control the fuel-displaced of valve
Mouth T4 is connected with hydraulic oil container；The oil return inlet T 2 of the commutation valve group is connected with hydraulic oil container, oil-out A1, B1 of the valve group that commutates
Hydraulic fluid port A2, B2 respectively with motor is connected.
Of the invention further, the oil inlet O of described fans drive pump is connected by filter core with hydraulic oil container.
Of the invention further, the drain tap T1 and motor drain tap T3 of fans drive pump are connected and latter take back hydraulic oil together
Case.Of the invention further, the drain tap T1 and motor drain tap T3 of the fans drive pump take back hydraulic oil container by filter core；
The oil-out T4 of the control valve is connected by filter core with hydraulic oil container；The oil return inlet T 2 of the commutation valve group passes through filter core and liquid
Force feed case is connected.
Of the invention further, the oil return inlet T 2 of described commutation valve group is connected by cooler with hydraulic oil container.
Further, the described built-in electro-hydraulic proportional valve of fans drive pump of the invention, electro-hydraulic proportional valve is in parallel with control valve.
Compared with prior art, the present invention installs a control between the flow control mouth and return line of fans drive pump
Valve processed, in the case where fan drive system other functions are not influenceed, before the switching of control fan direction of rotation, fans drive pump
Flow, reaches rotation speed of the fan minimum, to avoid reversing impact, has ensured the reliability of fan and fan system, and extension is used
Life-span.Make fans drive pump hardly power output during startup, reduce the engine resistance of start.When in radiator medium temperature compared with
It is low, when need to be rapidly heated, make stopping fan rotation, medium temperature rise time in radiator is shortened, improve system effectiveness.
Brief description of the drawings
Fig. 1 is hydraulic schematic diagram of the invention；
In figure：1st, motor, 2, commutation valve group, 3, hydraulic oil container, 4, fans drive pump, 5, control valve.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in figure 1, a kind of hydraulic fan drive system of the invention, including motor 1, commutation valve group 2, hydraulic oil container 3, wind
Fan transfer tube 4 and control valve 5；The oil inlet O of the fans drive pump 4 is connected with hydraulic oil container 3, fans drive pump 4 it is fuel-displaced
Mouth P1 is connected with the oil inlet P 2 of commutation valve group 2, and the control mouth X of fans drive pump 4 is connected with the oil inlet P 3 of control valve 5, wind
The drain tap T1 and the drain tap T3 of motor 1 for fanning transfer tube 4 take back hydraulic oil container 3；The oil-out T4 and hydraulic oil of the control valve 5
Case 3 is connected；It is described commutation valve group 2 oil return inlet T 2 be connected with hydraulic oil container 3, commutation valve group 2 oil-out A1, B1 respectively with horse
Hydraulic fluid port A2, B2 up to 1 is connected.As long as control valve 5 can realize hydraulic fluid port P3 and hydraulic fluid port T4 on-off functions here, it is not limited to
Form.
On the basis of said structure, the oil inlet O of fans drive pump 4 of the present invention is connected by filter core with hydraulic oil container 3.Wind
The drain tap T1 and the drain tap T3 of motor 1 for fanning transfer tube 4 take back hydraulic oil container 3 by filter core；The oil-out T4 of valve 5 is controlled to pass through
Filter core is connected with hydraulic oil container 3；The oil return inlet T 2 of the valve group 2 that commutates is connected by filter core with hydraulic oil container 3.All and hydraulic oil container
3 connected return lines, can be connected by filter core with fuel tank.For particle debris and rubber impurities in filtering appts,
Ensure the cleannes of liquid fuel tank inner fluid.
The drain tap T1 of fans drive pump 4 of the present invention is connected latter with taking back hydraulic oil container 3 with the drain tap T3 of motor 1.This
In be only an example, all return lines being connected with hydraulic oil container 3 of the present invention, after can merging with hydraulic oil container 3
It is connected, individually can be also connected with hydraulic oil container 3.
The oil return inlet T 2 of present invention commutation valve group 2 is connected by cooler with hydraulic oil container 3.During work, in hydraulic system
High temperature oil stream allows oil temperature to be down to operating temperature to ensure that main frame is carried out continuously normal operation through hydraulic oil cooler, makes work
Work can smoothly be carried out.
The built-in electro-hydraulic proportional valve of fans drive pump of the present invention 4, electro-hydraulic proportional valve is in parallel with control valve 5.The rotating speed of motor 1 is received
The built-in electro-hydraulic proportional valve of fans drive pump 4 is controlled.
Operation principle of the present invention is as follows：When fan drive system runs, control valve 5 is closed, fans drive
From hydraulic oil container oil suction, by the valve group 2 that commutates, supply motor 1, drive motor 1 rotates pump 4.The rotating speed of motor 1 receives fans drive
The built-in electro-hydraulic proportional valve of pump 4 is controlled.The built-in electro-hydraulic proportional valve of fans drive pump 4 is in parallel relationship with control valve 5.Will open
Employ when the engine of fans drive pump 4 is driven, control valve 5 is in open mode, fans drive pump 4 is in minimum injection rate
State, reduces required turning moment, reduces engine starting load, it is easy to start.Medium temperature is relatively low in radiator,
When not needing fan to rotate, control valve is set to be in open mode, fans drive pump 4 is in minimum injection rate state, and motor rotary speed reaches
Even stop to minimum, radiator takes away heat due to little or no air flow, and medium can be with maximum in radiator
The lifting temperature of speed, to reach predetermined temperature as early as possible.When needing fan to reversely rotate, the in-built electrical liquor ratio of fans drive pump 4
The discharge capacity of example valve control control fans drive pump 4 is reduced to a fixed displacement, then opens control valve 5, and fans drive pump 4 is in minimum
Displacement condition, motor rotary speed reaches minimum even stopping, and the valve group 2 that now commutates switches the direction of the traffic by the valve group 2 that commutates, makes
The rotation commutation of motor 1, then disconnects control valve 5, the row of the built-in electro-hydraulic proportional valve of fans drive pump 4 control control fans drive pump 4
Measure to default discharge capacity.When being commutated due to fan, rotating speed is extremely low or even stops, and the impact that fan and fan drive system are received is minimum,
Ensure that the reliability of system.
Certainly, above-described embodiment is only preferred scheme of the invention, is specifically not limited thereto, on this basis can basis
It is actually needed and makes with targetedly adjusting, so as to obtain different implementation methods.Because mode in the cards is more, this
In just no longer illustrate one by one.
Claims (6)
1. a kind of hydraulic fan drive system, it is characterised in that including motor（1）, commutation valve group（2）, hydraulic oil container（3）, wind
Fan transfer tube（4）With control valve（5）；The fans drive pump（4）Oil inlet O and hydraulic oil container（3）It is connected, fans drive pump
（4）Oil-out P1 with commutation valve group（2）Oil inlet P 2 be connected, fans drive pump（4）Control mouth X with control valve（5）'s
Oil inlet P 3 is connected, fans drive pump（4）Drain tap T1 and motor（1）Drain tap T3 takes back hydraulic oil container（3）；The control
Valve（5）Oil-out T4 and hydraulic oil container（3）It is connected；The commutation valve group（2）Oil return inlet T 2 and hydraulic oil container（3）It is connected,
Commutation valve group（2）Oil-out A1, B1 respectively with motor（1）Hydraulic fluid port A2, B2 is connected.
2. a kind of hydraulic fan drive system according to claim 1, it is characterised in that described fans drive pump（4）
Oil inlet O pass through filter core and hydraulic oil container（3）It is connected.
3. a kind of hydraulic fan drive system according to claim 1, it is characterised in that fans drive pump（4）Draining
Mouth T1 and motor（1）Drain tap T3 is connected latter with taking back hydraulic oil container（3）.
4. a kind of hydraulic fan drive system according to claim 1, it is characterised in that the fans drive pump（4）'s
Drain tap T1 and motor（1）Drain tap T3 takes back hydraulic oil container by filter core（3）；The control valve（5）Oil-out T4 pass through
Filter core and hydraulic oil container（3）It is connected；The commutation valve group（2）Oil return inlet T 2 pass through filter core and hydraulic oil container（3）It is connected.
5. a kind of hydraulic fan drive system according to claim 1, it is characterised in that described commutation valve group（2）'s
Oil return inlet T 2 passes through cooler and hydraulic oil container（3）It is connected.
6. a kind of hydraulic fan drive system according to claim 1, it is characterised in that described fans drive pump（4）
Built-in electro-hydraulic proportional valve, electro-hydraulic proportional valve and control valve（5）It is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056644.6A CN106704276A (en) | 2017-01-25 | 2017-01-25 | Hydraulic fan driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710056644.6A CN106704276A (en) | 2017-01-25 | 2017-01-25 | Hydraulic fan driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106704276A true CN106704276A (en) | 2017-05-24 |
Family
ID=58909689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710056644.6A Pending CN106704276A (en) | 2017-01-25 | 2017-01-25 | Hydraulic fan driving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704276A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201763584U (en) * | 2010-08-24 | 2011-03-16 | 江苏恒源液压有限公司 | High-performance remote automatic control axial plunger pump |
| JP2012031998A (en) * | 2011-08-19 | 2012-02-16 | Bosch Rexroth Corp | Method of controlling variable displacement pump |
| CN203117806U (en) * | 2013-01-28 | 2013-08-07 | 上海美钻设备成套有限公司 | Main pressure control device of universal rotating blowout preventer control system |
| CN104533886A (en) * | 2015-01-16 | 2015-04-22 | 北京理工大学 | Non-load starting device and method for variable hydraulic pump |
| CN205064457U (en) * | 2015-08-21 | 2016-03-02 | 徐工集团工程机械股份有限公司科技分公司 | Fan -driving variable hydraulic system of loader load sensing |
| CN206429463U (en) * | 2017-01-25 | 2017-08-22 | 徐工集团工程机械股份有限公司科技分公司 | Hydraulic fan drive system |
-
2017
- 2017-01-25 CN CN201710056644.6A patent/CN106704276A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201763584U (en) * | 2010-08-24 | 2011-03-16 | 江苏恒源液压有限公司 | High-performance remote automatic control axial plunger pump |
| JP2012031998A (en) * | 2011-08-19 | 2012-02-16 | Bosch Rexroth Corp | Method of controlling variable displacement pump |
| CN203117806U (en) * | 2013-01-28 | 2013-08-07 | 上海美钻设备成套有限公司 | Main pressure control device of universal rotating blowout preventer control system |
| CN104533886A (en) * | 2015-01-16 | 2015-04-22 | 北京理工大学 | Non-load starting device and method for variable hydraulic pump |
| CN205064457U (en) * | 2015-08-21 | 2016-03-02 | 徐工集团工程机械股份有限公司科技分公司 | Fan -driving variable hydraulic system of loader load sensing |
| CN206429463U (en) * | 2017-01-25 | 2017-08-22 | 徐工集团工程机械股份有限公司科技分公司 | Hydraulic fan drive system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |