CN203730468U - Thermo-sensitive element-controlled loader independent cooling system - Google Patents
Thermo-sensitive element-controlled loader independent cooling system Download PDFInfo
- Publication number
- CN203730468U CN203730468U CN201420134707.7U CN201420134707U CN203730468U CN 203730468 U CN203730468 U CN 203730468U CN 201420134707 U CN201420134707 U CN 201420134707U CN 203730468 U CN203730468 U CN 203730468U
- Authority
- CN
- China
- Prior art keywords
- oil
- motor
- motor unit
- valve
- control valve
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a thermo-sensitive element-controlled loader independent cooling system. An oil leakage opening of a motor unit of the thermo-sensitive element-controlled loader independent cooling system is connected with an oil tank; an oil return opening in the motor unit is connected with the oil tank; the oil inlet of the motor unit is connected with a first oil port of an electromagnetic directional valve; a third oil port of the electromagnetic directional valve is connected with the oil inlet of a quantification motor; the oil return port of the quantification motor is connected with a fourth oil port of the electromagnetic directional valve; a second oil port of the electromagnetic directional valve is connected with the oil return port of the motor unit; a one-way valve, a safety valve and a proportional overflow valve are connected in parallel between the oil inlet and the oil return port of the motor unit; the safety valve is connected in series with a thermo-sensitive element; the force outlet of the quantification motor is connected with the force fetching port of a fan. The cost for realizing the control characteristic that the rotating speed of the motor is proportionally controlled according to an oil temperature by the independent cooling system which adopts a temperature sensor and the electric proportional overflow valve is lower than the cost for realizing the control characteristic by an independent cooling system which adopts the temperature sensor.
Description
Technical field
The utility model relates to a kind of independent radiation system of loader.
Background technique
The independent radiation system of known large-tonnage loader is by motor drive radiation system fan, in the motor of independent radiation system or pump, embeds electric proportional pressure control valve, embeds temperature transducer in oil.The temperature signal that temperature transducer detects can change into electrical signal, for the proportion electro-magnet ouput force of control ratio relief valve, thereby indirectly controls motor rotary speed by controlling water kick amount.The advantage of this radiation system is apparent, can realize the proportional control of oil temperature amount and motor rotary speed, has avoided the deficiency of general radiation system.But this independent radiation system also has its deficiency, the control unit cost that is exactly it is high, this more obvious in abnormal responsive engineering machinery to cost at loader.
Summary of the invention
In order to make up the high deficiency of independent radiation system cost of known large-tonnage loader, the loader independence radiation system that the utility model provides a kind of thermosensitive element to control, loader independence cooling system structure that this thermosensitive element is controlled is simple, cost is low, and can realize motor rotary speed and be controlled by oil temperature.
The technological scheme that the utility model is taked is: the loader independence radiation system that this thermosensitive element is controlled comprises metering pump, the filler opening of metering pump is connected with hydraulic oil container, the oil outlet of metering pump is connected with the filler opening of motor unit (being comprised of proportional pressure control valve, safety valve, one-way valve, solenoid directional control valve, fixed displacement motor etc.), for system working connection hydraulic oil is provided.Leakage hydraulic fluid port in motor unit is connected with fuel tank; Return opening in motor unit by oil fall apart, filter is connected with fuel tank.In motor unit, filler opening is connected with the first hydraulic fluid port in solenoid directional control valve, the 3rd hydraulic fluid port of solenoid directional control valve is connected with the filler opening of fixed displacement motor, the return opening of fixed displacement motor is connected with the 4th hydraulic fluid port of solenoid directional control valve, and the second hydraulic fluid port of solenoid directional control valve is connected with the return opening in motor unit; Between filler opening in motor unit and return opening, be parallel with one-way valve, safety valve, proportional pressure control valve, wherein safety valve is connected with thermosensitive element simultaneously.The power delivery outlet of fixed displacement motor is connected with the power taking mouth of fan.
Advantage of the present utility model: owing to adopting the new structure of above-mentioned thermosensitive element+proportional pressure control valve, not only realized motor rotary speed that the independent radiation system of employing temperature transducer+electric proportional pressure control valve realizes according to the control characteristic of oil temperature proportional control, and more much lower than the cost of the independent radiation system of employing temperature transducer, and this is vital for the abnormal responsive loader of cost.
Accompanying drawing explanation
Fig. 1 is an embodiment's of the present utility model structure principle chart.
In figure: 1. hydraulic oil container, 2. metering pump, 3. thermosensitive element, 4. proportional pressure control valve, 5. safety valve, 6. one-way valve, 7. solenoid directional control valve, 8. fixed displacement motor, 9. fan, 10. loose, 11. filters of oil.
Embodiment
In Fig. 1, the filler opening of metering pump 2 is connected with hydraulic oil container 1, the oil outlet of metering pump 2 is connected with the oil inlet P of motor unit (being comprised of proportional pressure control valve 4, safety valve 5, one-way valve 6, solenoid directional control valve 7, fixed displacement motor 8 etc.), for system working connection hydraulic oil is provided.Leakage hydraulic fluid port L in motor unit is connected with fuel tank; Oil return inlet T in motor unit by oil fall apart 10, filter 11 is connected with fuel tank 1.In motor unit, oil inlet P is connected with the first hydraulic fluid port A in solenoid directional control valve 7, the 3rd hydraulic fluid port C of solenoid directional control valve 7 is connected with the filler opening of fixed displacement motor 8, the return opening of fixed displacement motor 8 is connected with the 4th hydraulic fluid port D of solenoid directional control valve 7, and the second hydraulic fluid port B of solenoid directional control valve 7 is connected with the oil return inlet T in motor unit; Between oil inlet P in motor unit and oil return inlet T, be parallel with one-way valve 6, safety valve 5, proportional pressure control valve 4, wherein safety valve 5 is connected with thermosensitive element 3 simultaneously.The power delivery outlet of fixed displacement motor 8 is connected with the power taking mouth of fan 9.
During work, loose 10 heat radiations of fixed displacement motor 8 drive fan 9 oil supply, two four-way electromagnetic reversing valve 7(that have in fixed displacement motor 8 is not only integrated general independent radiation system are for realizing the clockwise and anticlockwise of motor), one-way valve 6(prevents that hydraulic oil from inhaling empty during for motor braking), safety valve 5(is used for limiting independent radiation system overload), but also integrated thermosensitive element 3 and temperature control proportional pressure control valve 4.Thermosensitive element 3 contacts with system liquid force feed, and when hydraulic oil has different temperature, thermosensitive element 3 has different amount of deformation.This amount of deformation can control ratio relief valve 4 the pre compressed magnitude of pressure adjusting spring, thereby the oil pressure relief of control ratio relief valve 4 is realized the control of fixed displacement motor 8 rotating speeds under hydraulic oil different temperatures, reaches demand assigned heat dissipation potential.
Claims (1)
1. the loader independence radiation system that a thermosensitive element is controlled, the loader independence radiation system that this thermosensitive element is controlled comprises metering pump, it is characterized in that: the filler opening of metering pump is connected with hydraulic oil container, the oil outlet of metering pump is connected with the filler opening of motor unit, leakage hydraulic fluid port in motor unit is connected with fuel tank, return opening in motor unit falls apart by oil, filter is connected with fuel tank, in motor unit, filler opening is connected with the first hydraulic fluid port in solenoid directional control valve, the 3rd hydraulic fluid port of solenoid directional control valve is connected with the filler opening of fixed displacement motor, the return opening of fixed displacement motor is connected with the 4th hydraulic fluid port of solenoid directional control valve, the second hydraulic fluid port of solenoid directional control valve is connected with the return opening in motor unit, between filler opening in motor unit and return opening, be parallel with one-way valve, safety valve, proportional pressure control valve, wherein safety valve is connected with thermosensitive element, the power delivery outlet of fixed displacement motor is connected with the power taking mouth of fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134707.7U CN203730468U (en) | 2014-03-25 | 2014-03-25 | Thermo-sensitive element-controlled loader independent cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134707.7U CN203730468U (en) | 2014-03-25 | 2014-03-25 | Thermo-sensitive element-controlled loader independent cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730468U true CN203730468U (en) | 2014-07-23 |
Family
ID=51200546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420134707.7U Expired - Fee Related CN203730468U (en) | 2014-03-25 | 2014-03-25 | Thermo-sensitive element-controlled loader independent cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730468U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465106A (en) * | 2014-10-16 | 2016-04-06 | 徐州重型机械有限公司 | Hydraulic cooling system, control method and crane |
| CN109340218A (en) * | 2018-12-18 | 2019-02-15 | 中国铁建重工集团有限公司 | A kind of cooling control system and cutting apparatus of diaphram wall cutting apparatus |
-
2014
- 2014-03-25 CN CN201420134707.7U patent/CN203730468U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465106A (en) * | 2014-10-16 | 2016-04-06 | 徐州重型机械有限公司 | Hydraulic cooling system, control method and crane |
| CN105465106B (en) * | 2014-10-16 | 2019-02-22 | 徐州重型机械有限公司 | Hydraulic radiating, control method and crane |
| CN109340218A (en) * | 2018-12-18 | 2019-02-15 | 中国铁建重工集团有限公司 | A kind of cooling control system and cutting apparatus of diaphram wall cutting apparatus |
| CN109340218B (en) * | 2018-12-18 | 2020-06-12 | 中国铁建重工集团股份有限公司 | Cooling control system of underground continuous wall cutting equipment and cutting equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201461624U (en) | Mine hoisting machine constant temperature hydraulic station | |
| CN203384149U (en) | Manual hydraulic proportional valve | |
| CN104960513B (en) | A kind of Full-hydraulic braking apparatus and fan drive system | |
| CN203730468U (en) | Thermo-sensitive element-controlled loader independent cooling system | |
| CN103912540A (en) | Hydraulic oil temperature control system and engineering machinery | |
| CN105960530A (en) | A hydraulic pump assembly for a vehicle | |
| CN203230678U (en) | Hydraulic actuator inlet and outlet flow pressure independent controlling system | |
| CN202834258U (en) | Novel speed control valve | |
| CN203685773U (en) | Multifunctional movable hydraulic station | |
| CN106351887A (en) | Hydraulic driving device | |
| CN202808201U (en) | Hydraulic control system and crane with same | |
| CN203430911U (en) | Pressure maintaining system for hydraulic machine | |
| CN103256334A (en) | Double-action hydraulic oil cylinder tractor suspension hydraulic system based on electromagnetic digital valve | |
| CN103939402A (en) | Concrete pump truck stirring system and concrete pump truck | |
| CN104164831A (en) | Milling wheel speed regulating system of cold milling machine for pavement | |
| CN200999734Y (en) | Device pump | |
| CN103672004A (en) | Novel electric valve | |
| CN203003109U (en) | Die-casting machine | |
| CN203023179U (en) | Hydraulic oil heating system of multiway valve | |
| CN103350210A (en) | Casting machine | |
| CN203384021U (en) | Control system of variable pump | |
| CN102445071B (en) | Wheel blocking hydraulic station of rotary kiln | |
| CN208169249U (en) | A kind of Power Recovery formula one-way cylinder endurance test hydraulic system | |
| CN205260460U (en) | Slurry agitator hydraulic system | |
| CN203067374U (en) | Rotary speed control system of engineering machinery hydraulic motor radiator and engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 |