CN103912540A - Hydraulic oil temperature control system and engineering machinery - Google Patents
Hydraulic oil temperature control system and engineering machinery Download PDFInfo
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- CN103912540A CN103912540A CN201410145965.XA CN201410145965A CN103912540A CN 103912540 A CN103912540 A CN 103912540A CN 201410145965 A CN201410145965 A CN 201410145965A CN 103912540 A CN103912540 A CN 103912540A
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Abstract
The invention provides a hydraulic oil temperature control system and engineering machinery. The hydraulic oil temperature control system comprises a pump, a main oil tank, an oil return circuit, a radiator, an auxiliary oil tank, a reverse valve, a temperature sensor and a controller. When the hydraulic oil temperature in the main oil tank is higher than a preset value, the controller controls the reverse valve to cut off the oil circuit between the radiator and the main oil tank and communicates with another oil circuit between the radiator and the auxiliary oil tank; when the hydraulic oil temperature in the main oil tank is lower than the preset value, the controller controls the reverse valve to cut off the oil circuit between the radiator and the auxiliary oil tank and communicates with the oil circuit between the radiator and the main oil tank. By the arrangement, the auxiliary oil tank can be selectively connected or disconnected according to the hydraulic oil temperature in the main oil tank, so that the hydraulic oil temperature can be sustained within the best temperature range, leakage of hydraulic oil can be further reduced, and operation efficiency of the hydraulic system can be improved while the service life of the same can be prolonged.
Description
Technical field
The present invention relates to hydraulics field, particularly a kind of hydraulic oil temperature control system and engineering machinery.
Background technique
In the hydraulic system of engineering machinery, the actual volume standard of hydraulic oil container should be 3-7 times of main pump flow, but in order to make the mechanism of engineering machinery more compact, the actual volume of now using hydraulic oil container is only 0.6 times of main pump flow conventionally, thereby causing hydraulic oil cycle period too short, reduce working life.Engineering mechanical hydraulic oil temperature control is 30-50 DEG C of performance the best, and when oil temperature is during higher than 65 DEG C, oil viscosity declines, and oil film is fragile, leaks and increases, Efficiency Decreasing.If hydraulic working oil temperature is higher than optimum temperature, when oil temperature is during higher than 65 DEG C, 10 DEG C of every risings, will reduce half the working life of hydraulic oil and hydraulic element.
In order to reduce hydraulic fluid temperature, avoid high temperature low effect phenomenon, now a lot of construction machinery production companies following two schemes of employing conventionally: the one, the belt pulley that employing change is large or large radiator, reduce hydraulic oil temperature by increasing air output, but can make like this engine efficiency reduce, or in the time of low grade, occur over-emitting black exhaust phenomenon; The 2nd, utilize the heat exchange of air-conditioning to take away hydraulic oil heat, thereby reduce hydraulic oil temperature, but this scheme can increase cost, engine consumption can raise, and also can cause the phenomenon that engine water temperature is too high simultaneously.
Summary of the invention
In view of this, the present invention is intended to propose a kind of hydraulic oil temperature control system and engineering machinery, with in reducing hydraulic fluid temperature, avoids occurring above-mentioned unfavorable phenomenon.
For achieving the above object, technological scheme of the present invention is achieved in that
On the one hand, the invention provides a kind of hydraulic oil temperature control system, main fuel tank, the oil return circuit being communicated with described main fuel tank that comprises pump, be communicated with the filler opening of described pump and be arranged on the radiator on described oil return circuit, also comprise the service tank that is communicated with described main fuel tank, for be communicated with described radiator and described main fuel tank or be communicated with the selector valve of described radiator and described service tank, for detection of the temperature transducer of described main fuel tank hydraulic fluid temperature and for receiving described temperature sensor signal and controlling the controller of described selector valve action; When the temperature of hydraulic oil in described main fuel tank is during higher than predefined value, described in described controller control, selector valve cuts off the oil circuit between described radiator and described main fuel tank, and be communicated with the oil circuit between described radiator and described service tank, when the temperature of hydraulic oil in described main fuel tank is during lower than predefined value, described in described controller control, selector valve cuts off the oil circuit between described radiator and described service tank, and is communicated with the oil circuit between described radiator and described main fuel tank.
Further, described selector valve is two-position three way magnetic valve, the electromagnet of described selector valve is electrically connected with described controller, the filler opening of described selector valve is communicated with the oil outlet of described radiator, and two oil outlets of described selector valve are communicated with respectively at the top of described main fuel tank and the top of service tank.
Further, the bottom of described service tank and the top of described main fuel tank are communicated with.
Further, between described selector valve and described service tank, be communicated with by steel pipe, and/or, between described service tank and described main fuel tank, be communicated with by steel pipe.
Further, on described oil return circuit, be also provided with the one-way valve in parallel with described radiator, and the oil outlet of described one-way valve is communicated with described main fuel tank.
Further, be also provided with inhalation valve at the top of described main fuel tank.
On the other hand, the present invention also provides a kind of engineering machinery, and described engineering machinery is provided with hydraulic oil temperature control system as above.
Further, described engineering machinery is excavator, hoist or rotary drilling rig.
Further, described service tank is arranged on the counterweight inside of described engineering machinery.
Further, the top that the top of described service tank is described counterweight, the bottom that the bottom of described service tank is described counterweight.
With respect to prior art, hydraulic oil temperature control system of the present invention has following advantage: hydraulic oil temperature control system of the present invention, because being provided with temperature transducer, controller and service tank, can be according to the temperature of hydraulic oil in main fuel tank, optionally connect service tank or disconnect service tank, in the time that system just starts preheating, system is disconnected service tank, thereby only some hydraulic oil participates in preheating, the temperature of hydraulic oil can reach optimum temperature range soon, and in the time that hydraulic oil temperature is raised to predefined value, system is connected service tank again, make the hydraulic oil in service tank participate in work cycle, increase hydraulic oil cycle period and cool time, hydraulic oil temperature can be maintained in optimum temperature range, and then the leakage rate of minimizing working oil, improve working efficiency and the working life of hydraulic system.
With respect to prior art, engineering machinery of the present invention is because being provided with above-mentioned hydraulic oil temperature control system, except having above-mentioned advantage, also there is following advantage: engineering machinery of the present invention, service tank can be arranged in counterweight, can not change the structure and layout of the existing each system of engineering machinery, also can change the overall volume of engineering machinery, upgrading to existing engineering machinery is simple, and application area is comparatively extensive.
Brief description of the drawings
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the hydraulic principle schematic diagram of the hydraulic oil temperature control system described in the embodiment of the present invention.
Description of reference numerals:
1-pump, 2-inhalation valve, 3-one-way valve, 4-radiator, 5-selector valve, 6-oil-feed steel pipe, 7-service tank, the fuel-displaced steel pipe of 8-, 9-temperature transducer, 10-main fuel tank.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Fig. 1 is the relevant drawings of the present embodiment, as shown in FIG., hydraulic oil temperature control system described in the present embodiment, comprise pump 1, the main fuel tank 10 being communicated with the filler opening of pump 1, the oil return circuit being communicated with main fuel tank 10 and be arranged on the radiator 4 on oil return circuit, also comprise the service tank 7 being communicated with main fuel tank 10, for being communicated with radiator 4 and main fuel tank 10 or being communicated with the selector valve 5 of radiator 4 and service tank 7, for detection of the temperature transducer 9 of main fuel tank 10 hydraulic fluid temperatures, for receiving temperature transducer 9 signals and controlling the controller that selector valve 5 moves and the one-way valve 3 being communicated with main fuel tank 10 with radiator 4 parallel connections and oil outlet.
This selector valve 5 is two-position three way magnetic valve, and the electromagnet of selector valve 5 is electrically connected with controller, and the filler opening of selector valve 5 is communicated with the oil outlet of radiator 4, and two oil outlets of selector valve 5 are communicated with respectively at the top of main fuel tank 10 and the top of service tank 7.Between selector valve 5 and service tank 7, be communicated with by oil-feed steel pipe 6, the bottom of service tank 7 is communicated with the top of main fuel tank 10 by fuel-displaced steel pipe 8, is also provided with inhalation valve 2 at the top of main fuel tank 10.
When the temperature of main fuel tank 10 interior hydraulic oil is during higher than predefined value (as 55 DEG C), controller control selector valve 5 cuts off the oil circuit between radiator 4 and main fuel tank 10, and be communicated with the oil circuit between radiator 4 and service tank 7, when the temperature of main fuel tank 10 interior hydraulic oil is during lower than predefined value (as 55 DEG C), controller control selector valve 5 cuts off the oil circuit between radiator 4 and service tank 7, and be communicated with the oil circuit between radiator 4 and main fuel tank 10, thereby make the hydraulic oil of 7 li of service tanks participate in work cycle, get back to main fuel tank 10 by fuel-displaced steel pipe 8, reserve liquid force feed in service tank 7 enters into after work cycle, hydraulic oil cycle period and cool time are increased, hydraulic oil temperature is maintained in optimum temperature range, and then the leakage rate of minimizing working oil, improve working efficiency and the working life of hydraulic system.
Hydraulic oil temperature control system described in the present embodiment, because being provided with temperature transducer 9, controller and service tank 7, can be according to the temperature of main fuel tank 10 interior hydraulic oil, optionally connect service tank 7 or disconnect service tank 7, in the time that system just starts preheating, system is disconnected service tank 7, thereby only some hydraulic oil participates in preheating, the temperature of hydraulic oil can reach optimum temperature range soon, and in the time that hydraulic oil temperature is raised to predefined value, system is connected service tank 7 again, make the hydraulic oil of 7 li of service tanks participate in work cycle, increase hydraulic oil cycle period and cool time, hydraulic oil temperature can be maintained in optimum temperature range, and then the leakage rate of minimizing working oil, improve working efficiency and the working life of hydraulic system.
Except above-mentioned hydraulic oil temperature control system, the embodiment of the present invention also provides a kind of engineering machinery that is provided with above-mentioned hydraulic oil temperature control system, as excavator, hoist or rotary drilling rig etc., above-mentioned hydraulic oil temperature control system is in the time of above-mentioned engineering machinery, service tank 7 can be arranged on counterweight inside, the top of this service tank 7 is the top of counterweight, the bottom that the bottom of service tank 7 is counterweight.The structure of other each several part of above-mentioned engineering machinery, with reference to prior art, repeats no more herein.
So arrange, with respect to prior art, except having the advantage of above-mentioned hydraulic oil temperature control system, also there is following advantage: the structure and layout that can not change the existing each system of engineering machinery, also can change the overall volume of engineering machinery, upgrading to existing engineering machinery is simple, and application area is comparatively extensive.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a hydraulic oil temperature control system, comprise pump (1), the main fuel tank (10) being communicated with the filler opening of described pump (1), the oil return circuit being communicated with described main fuel tank (10) and be arranged on the radiator (4) on described oil return circuit, it is characterized in that, also comprise the service tank (7) being communicated with described main fuel tank (10), be used for being communicated with described radiator (4) with described main fuel tank (10) or be communicated with described radiator (4) and the selector valve (5) of described service tank (7), for detection of the temperature transducer (9) of described main fuel tank (10) hydraulic fluid temperature and for receiving described temperature transducer (9) signal and controlling the controller that described selector valve (5) moves, when the temperature of hydraulic oil in described main fuel tank (10) is during higher than predefined value, described in described controller control, selector valve (5) cuts off the oil circuit between described radiator (4) and described main fuel tank (10), and be communicated with the oil circuit between described radiator (4) and described service tank (7), when the temperature of hydraulic oil in described main fuel tank (10) is during lower than predefined value, described in described controller control, selector valve (5) cuts off the oil circuit between described radiator (4) and described service tank (7), and be communicated with the oil circuit between described radiator (4) and described main fuel tank (10).
2. hydraulic oil temperature control system according to claim 1, it is characterized in that, described selector valve (5) is two-position three way magnetic valve, the electromagnet of described selector valve (5) is electrically connected with described controller, the filler opening of described selector valve (5) is communicated with the oil outlet of described radiator (4), and two oil outlets of described selector valve (5) are communicated with respectively at the top of described main fuel tank (10) and the top of service tank (7).
3. hydraulic oil temperature control system according to claim 2, is characterized in that, the bottom of described service tank (7) is communicated with the top of described main fuel tank (10).
4. hydraulic oil temperature control system according to claim 3, is characterized in that, between described selector valve (5) and described service tank (7), be communicated with by steel pipe, and/or, between described service tank (7) and described main fuel tank (10), be communicated with by steel pipe.
5. according to the hydraulic oil temperature control system described in claim 1 to 4 any one, it is characterized in that, on described oil return circuit, be also provided with the one-way valve (3) in parallel with described radiator (4), and the oil outlet of described one-way valve (3) is communicated with described main fuel tank (10).
6. hydraulic oil temperature control system according to claim 5, is characterized in that, is also provided with inhalation valve (2) at the top of described main fuel tank (10).
7. an engineering machinery, is characterized in that, described engineering machinery is provided with the hydraulic oil temperature control system as described in claim 1 to 6 any one.
8. engineering machinery according to claim 7, is characterized in that, described engineering machinery is excavator, hoist or rotary drilling rig.
9. engineering machinery according to claim 8, is characterized in that, described service tank (7) is arranged on the counterweight inside of described engineering machinery.
10. engineering machinery according to claim 9, is characterized in that, the top that the top of described service tank (7) is described counterweight, the bottom that the bottom of described service tank (7) is described counterweight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145965.XA CN103912540A (en) | 2014-04-14 | 2014-04-14 | Hydraulic oil temperature control system and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410145965.XA CN103912540A (en) | 2014-04-14 | 2014-04-14 | Hydraulic oil temperature control system and engineering machinery |
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| CN103912540A true CN103912540A (en) | 2014-07-09 |
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| CN201410145965.XA Pending CN103912540A (en) | 2014-04-14 | 2014-04-14 | Hydraulic oil temperature control system and engineering machinery |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071698A (en) * | 2014-07-18 | 2014-10-01 | 徐州重型机械有限公司 | Crane hydraulic oil temperature control system, method and crane |
| CN104329324A (en) * | 2014-10-29 | 2015-02-04 | 中国重汽集团青岛重工有限公司 | Hot air regeneration management system |
| CN105298996A (en) * | 2015-12-02 | 2016-02-03 | 湖南三一路面机械有限公司 | Pumping hydraulic system and concrete pump truck |
| CN106523476A (en) * | 2016-06-13 | 2017-03-22 | 柳州柳工挖掘机有限公司 | Integrated hydraulic oil radiator |
| CN107314003A (en) * | 2016-04-27 | 2017-11-03 | 中国国际海运集装箱(集团)股份有限公司 | Hydraulic pressure monitoring system |
| CN110422230A (en) * | 2019-09-11 | 2019-11-08 | 三一专用汽车有限责任公司 | Hydraulic steering system, mixer truck and its control method |
| CN112145508A (en) * | 2020-09-25 | 2020-12-29 | 上海中联重科桩工机械有限公司 | Engineering machinery cooling system and engineering machinery equipment |
| CN113550371A (en) * | 2021-06-22 | 2021-10-26 | 徐州徐工挖掘机械有限公司 | Excavator hydraulic oil warming system and control method thereof |
| CN113803305A (en) * | 2021-08-16 | 2021-12-17 | 中联重科土方机械有限公司 | Control method and control system of air pressure balance control device and engineering machinery |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071698A (en) * | 2014-07-18 | 2014-10-01 | 徐州重型机械有限公司 | Crane hydraulic oil temperature control system, method and crane |
| CN104329324A (en) * | 2014-10-29 | 2015-02-04 | 中国重汽集团青岛重工有限公司 | Hot air regeneration management system |
| CN104329324B (en) * | 2014-10-29 | 2016-06-22 | 中国重汽集团青岛重工有限公司 | Hot blast regeneration management system |
| CN105298996B (en) * | 2015-12-02 | 2017-09-22 | 湖南三一路面机械有限公司 | Hydraulic system of pump and concrete mixer |
| CN105298996A (en) * | 2015-12-02 | 2016-02-03 | 湖南三一路面机械有限公司 | Pumping hydraulic system and concrete pump truck |
| CN107314003A (en) * | 2016-04-27 | 2017-11-03 | 中国国际海运集装箱(集团)股份有限公司 | Hydraulic pressure monitoring system |
| CN106523476A (en) * | 2016-06-13 | 2017-03-22 | 柳州柳工挖掘机有限公司 | Integrated hydraulic oil radiator |
| CN106523476B (en) * | 2016-06-13 | 2019-11-19 | 柳州柳工挖掘机有限公司 | Integrated hydraulic oil radiator |
| CN110422230A (en) * | 2019-09-11 | 2019-11-08 | 三一专用汽车有限责任公司 | Hydraulic steering system, mixer truck and its control method |
| CN110422230B (en) * | 2019-09-11 | 2024-07-09 | 三一专用汽车有限责任公司 | Hydraulic steering system, mixer truck and control method thereof |
| CN112145508A (en) * | 2020-09-25 | 2020-12-29 | 上海中联重科桩工机械有限公司 | Engineering machinery cooling system and engineering machinery equipment |
| CN113550371A (en) * | 2021-06-22 | 2021-10-26 | 徐州徐工挖掘机械有限公司 | Excavator hydraulic oil warming system and control method thereof |
| CN113803305A (en) * | 2021-08-16 | 2021-12-17 | 中联重科土方机械有限公司 | Control method and control system of air pressure balance control device and engineering machinery |
| CN113803305B (en) * | 2021-08-16 | 2024-04-02 | 中联重科土方机械有限公司 | Control method and control system of air pressure balance control device and engineering machinery |
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Application publication date: 20140709 |
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