CN103062162A - Hydraulic oil radiating system and engineering machinery - Google Patents
Hydraulic oil radiating system and engineering machinery Download PDFInfo
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- CN103062162A CN103062162A CN2012105792474A CN201210579247A CN103062162A CN 103062162 A CN103062162 A CN 103062162A CN 2012105792474 A CN2012105792474 A CN 2012105792474A CN 201210579247 A CN201210579247 A CN 201210579247A CN 103062162 A CN103062162 A CN 103062162A
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Abstract
The invention discloses a hydraulic oil radiating system which comprises a hydraulic oil radiator, a fan, an air cooling motor, a controller and a temperature sensor. The temperature sensor is used for detecting the temperature of an oil inlet or an oil outlet of the hydraulic oil radiator, the air cooling motor drives the fan to cooling the hydraulic oil radiator, and the controller controls rotation speed of the fan according to signals of the temperature sensor. The invention further provides engineering machinery. Energy saving, emission reduction and noise reduction can be achieved while guaranteeing regular work of the hydraulic system of the engineering machinery.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of hydraulic oil cooling system and engineering machinery.
Background technique
At present, in engineering machinery field, hydraulic oil cooling system is the core of whole cooling system, the hydraulic oil of heat through after the radiator cooling and the hydraulic oil of fuel tank carry out heat exchange so that the temperature of whole hydraulic system is controlled within the scope that system and each dynamical element can bear.
Existing hydraulic oil cooling system generally is to adopt the rotation of fixed displacement motor drive fan, and in the certain situation of the discharge capacity of fixed displacement motor, rotation speed of the fan is certain, and fan is all the time with a kind of heat radiation power state work.Hydraulic oil cooling device does not have feedback regulation, and, ambient temperature little in the Hydraulic System Fever amount can cause radiation energy consumption larger when low, and fan noise is larger.Simultaneously, when the temperature of the hydraulic system of engineering machinery surpassed 85 to 100 degrees centigrade of the highest permission hydraulic fluid temperatures of normal operation, engineering machinery also still worked on, and will cause hydraulic system to damage, and causes security incident.
Summary of the invention
In view of this, the present invention proposes a kind of hydraulic oil cooling system and engineering machinery, solving the problem of the energy-conservation and noise abatement of hydraulic oil cooling system, and guarantees the problem of the hydraulic system normal operation of engineering machinery.
On the one hand, the invention provides a kind of hydraulic oil cooling system, hydraulic oil cooling system is arranged in the hydraulic system of engineering machinery, comprise hydraulic oil radiator, fan, air-cooled motor, controller, temperature transducer, temperature transducer is for detection of hydraulic oil radiator filler opening temperature, air-cooled motor-driven fan is dispelled the heat to hydraulic oil radiator, and controller is controlled the rotating speed of fan according to the signal of temperature transducer.
Further, when hydraulic oil radiator filler opening temperature was lower than the hydraulic fluid temperature of hydraulic oil cooling system unlatching work, air-cooled motor quit work; When hydraulic oil radiator filler opening temperature was higher than the highest permission hydraulic fluid temperature of hydraulic system normal operation, hydraulic system quit work.
Further, the hydraulic fluid temperature that is higher than hydraulic oil cooling system unlatching work when hydraulic oil radiator filler opening temperature, and when being lower than the highest permission hydraulic fluid temperature of hydraulic system normal operation, the rotating speed of controller control fan raises with hydraulic oil radiator filler opening temperature.
Further, the hydraulic fluid temperature of hydraulic oil cooling system unlatching work is 30 to 40 degrees centigrade; The highest permission hydraulic fluid temperature of hydraulic system normal operation is 85 to 100 degrees centigrade.
Further, air-cooled motor is variable hydraulic motor, and variable hydraulic motor comprises displacement control oil cylinder and electric proportional control valve, electric proportional control valve control displacement control oil cylinder, controller is by the electric current of control electric proportional control valve, and the discharge capacity of controlled variable oil hydraulic motor is to regulate the rotating speed of fan.
Further, also comprise speed changer, air-cooled motor is by the rotation of speed changer drive fan, and controller is regulated the rotating speed of fan by the control speed changer.
Further, also comprise oil hydraulic pump, oil hydraulic pump is supplied with hydraulic oil to air-cooled motor.
A kind of engineering machinery also is provided on the other hand, has comprised above-mentioned hydraulic oil cooling system.
A kind of hydraulic oil cooling system provided by the invention and engineering machinery beneficial effect are:
One by real-time detection hydraulic oil radiator filler opening temperature, gathers and feeds back the construction machinery hydraulic system oil mass, and Control Engineering machinery hydraulic system work and stopping to guarantee the hydraulic system normal operation.
Its two, when hydraulic oil radiator filler opening temperature was low, fan had been realized the control of fan noise with than slow-speed of revolution operation when satisfying the hydraulic system heat radiation; By the feedback of hydraulic oil radiator filler opening temperature, finally realize several different rotation speed of the fan operating conditions, changed existing hydraulic system all the time with a kind of power mode operation, realized the energy-conservation of hydraulic system.
Description of drawings
The accompanying drawing that consists of a part of the present invention is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is hydraulic oil cooling system structural representation of the present invention.
Embodiment
Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the present invention can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As shown in Figure 1, a kind of hydraulic oil cooling system, hydraulic oil cooling system are arranged in the hydraulic system of engineering machinery, comprise hydraulic oil radiator 5, fan 3, air-cooled motor 2, controller, temperature transducer 4, oil hydraulic pump 1.Air-cooled motor 2 is variable hydraulic motor, comprises displacement control oil cylinder 7 and electric proportional control valve 6.Temperature transducer 4 is installed on the filler opening of hydraulic oil radiator 5, for detection of the hydraulic fluid temperature of the filler opening of hydraulic oil radiator 5.3 pairs of hydraulic oil radiators 5 of air-cooled motor 2 drive fan dispel the heat, and the signal of controller collecting temperature sensor 4 according to the signal of temperature transducer 4, by controlling the rotating speed of air-cooled motor 2, is controlled the rotating speed of fan 3.Oil hydraulic pump 1 provides hydraulic oil to air-cooled motor 2, drives air-cooled motor 2 rotations.Temperature transducer 4 is installed on the filler opening of hydraulic oil radiator 5, is conducive to the hydraulic fluid temperature of the hydraulic system of Real-time Collection engineering machinery, can detect in real time hydraulic system and whether is in normal working by gathering this temperature.
When hydraulic oil radiator 5 filler opening temperature were lower than the hydraulic fluid temperature of hydraulic oil cooling system unlatching work, air-cooled motor 2 quit work; When hydraulic oil radiator 5 filler opening temperature were higher than the highest permission hydraulic fluid temperature of hydraulic system normal operation, the hydraulic system of engineering machinery quit work.Such as concrete pump, when hydraulic oil radiator 5 filler opening temperature were higher than the highest permission hydraulic fluid temperature of hydraulic system normal operation, concrete pump stopped pumping.
The hydraulic fluid temperature that is higher than hydraulic oil cooling system unlatching work when hydraulic oil radiator 5 filler opening temperature, and when being lower than the highest permission hydraulic fluid temperature of hydraulic system normal operation, controller is controlled the rotating speed of fan 3 by the rotating speed of controlling air-cooled motor 2, raise with hydraulic oil radiator 5 filler opening temperature, reduce and reduce.
The hydraulic fluid temperature of hydraulic oil radiator unlatching work can be selected in 30 to 40 degrees centigrade scope; The highest permission hydraulic fluid temperature of hydraulic system normal operation can be selected in 85 to 100 degrees centigrade scope.For example: when hydraulic oil radiator 5 filler opening temperature were lower than 40 degrees centigrade, air-cooled motor 2 quit work; Thereby reach the purpose of energy-saving and emission-reduction and noise reduction.When hydraulic oil radiator 5 filler opening temperature were higher than 85 degrees centigrade, the hydraulic system of engineering machinery quit work, thus the purpose of the hydraulic system of protection engineering machinery.When hydraulic oil radiator 5 filler opening temperature are between 40 to 85 degrees centigrade, controller is to the different control electric current of electric proportional control valve 6 outputs, thereby electric proportional control valve 6 control displacement control oil cylinders 7 actions, the discharge capacity of the air-cooled motor 2 of displacement control oil cylinder 7 controls, thereby can regulate the discharge capacity of air-cooled motor 2, control the rotating speed of air-cooled motor 2.The temperature feedback of hydraulic oil cooling system by hydraulic oil radiator 5 filler openings carries out feedback regulation to the rotating speed of air-cooled motor 2, and air-cooled motor 2 is realized noise reduction and energy-saving and emission-reduction with lower power state work when hydraulic oil radiator 5 filler opening temperature are low.
Simultaneously, air-cooled motor 2 also can adopt constant displacement hydraulic motor, and constant displacement hydraulic motor by the gear of control speed changer, is regulated the rotating speed of fan 3 by 3 rotations of speed changer drive fan.Also can drive for electricity the air-cooled motor of formula or pneumatic type.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. hydraulic oil cooling system, hydraulic oil cooling system is arranged in the hydraulic system of engineering machinery, it is characterized in that, comprise hydraulic oil radiator, fan, air-cooled motor, controller, temperature transducer, temperature transducer is for detection of hydraulic oil radiator filler opening temperature, air-cooled motor-driven fan is dispelled the heat to hydraulic oil radiator, and controller is controlled the rotating speed of fan according to the signal of temperature transducer.
2. hydraulic oil cooling system according to claim 1 is characterized in that, when hydraulic oil radiator filler opening temperature was lower than the hydraulic fluid temperature of hydraulic oil cooling system unlatching work, air-cooled motor quit work; When hydraulic oil radiator filler opening temperature was higher than the highest permission hydraulic fluid temperature of hydraulic system normal operation, hydraulic system quit work.
3. hydraulic oil cooling system according to claim 1, it is characterized in that, the hydraulic fluid temperature that is higher than hydraulic oil cooling system unlatching work when hydraulic oil radiator filler opening temperature, and when being lower than the highest permission hydraulic fluid temperature of hydraulic system normal operation, the rotating speed of controller control fan raises with hydraulic oil radiator filler opening temperature.
4. root institute is characterized in that according to claim 2 or 3 described hydraulic oil cooling systems the hydraulic fluid temperature of hydraulic oil cooling system unlatching work is 30 to 40 degrees centigrade; The highest permission hydraulic fluid temperature of hydraulic system normal operation is 85 to 100 degrees centigrade.
5. according to claim 1 to the described hydraulic oil cooling system of 3 any one, it is characterized in that, air-cooled motor is variable hydraulic motor, variable hydraulic motor comprises displacement control oil cylinder and electric proportional control valve, electric proportional control valve control displacement control oil cylinder, controller is by the electric current of control electric proportional control valve, and the discharge capacity of controlled variable oil hydraulic motor is to regulate the rotating speed of fan.
6. according to claim 1 to the described hydraulic oil cooling system of 3 any one, it is characterized in that, also comprise speed changer, air-cooled motor is by the rotation of speed changer drive fan, and controller is regulated the rotating speed of fan by the control speed changer.
7. hydraulic oil cooling system according to claim 5 is characterized in that, also comprises oil hydraulic pump, and oil hydraulic pump is supplied with hydraulic oil to air-cooled motor.
8. an engineering machinery is characterized in that, comprises such as the described hydraulic oil cooling system of claim 1 to 7 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105792474A CN103062162A (en) | 2012-12-27 | 2012-12-27 | Hydraulic oil radiating system and engineering machinery |
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| CN2012105792474A CN103062162A (en) | 2012-12-27 | 2012-12-27 | Hydraulic oil radiating system and engineering machinery |
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| CN2012105792474A Pending CN103062162A (en) | 2012-12-27 | 2012-12-27 | Hydraulic oil radiating system and engineering machinery |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104055207A (en) * | 2014-06-17 | 2014-09-24 | 洛阳四达农机有限公司 | Cooling system of silaging machine |
| CN105156405A (en) * | 2015-07-29 | 2015-12-16 | 徐州重型机械有限公司 | Hydraulic oil cooling system, crane and control method for hydraulic oil cooling system |
| 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 |
| CN106607371A (en) * | 2015-10-22 | 2017-05-03 | 西安品质信息科技有限公司 | Temperature self-adaption ultrasonic washing machine based on sensor |
| CN106988853A (en) * | 2017-03-09 | 2017-07-28 | 厦门厦工机械股份有限公司 | A kind of engineering machinery intelligent heat dissipation management system and method |
| CN107139713A (en) * | 2017-06-08 | 2017-09-08 | 龙口中宇机械有限公司 | Intelligent heat dissipation system and control program based on variable-angle hydraulic fan |
| CN111173807A (en) * | 2020-01-07 | 2020-05-19 | 南通艾斯安液压科技有限公司 | Hydraulic system heat exchanger capable of controlling temperature |
| CN111536109A (en) * | 2020-04-30 | 2020-08-14 | 三一重机有限公司 | Oil temperature control method and device and engineering machinery |
| CN113931250A (en) * | 2021-10-21 | 2022-01-14 | 徐州徐工挖掘机械有限公司 | Excavator, hydraulic oil cooling fan control method and device thereof, and storage medium |
| CN113983009A (en) * | 2021-10-28 | 2022-01-28 | 三一重机有限公司 | Fan rotating speed control system, fan rotating speed control method and engineering machinery |
| CN114105024A (en) * | 2021-10-26 | 2022-03-01 | 甘肃诚信电力科技有限责任公司 | Four-wheel multifunctional tractor and control system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005240935A (en) * | 2004-02-27 | 2005-09-08 | Kobelco Contstruction Machinery Ltd | Working fluid cooling device of construction machine |
| CN1949114A (en) * | 2006-11-17 | 2007-04-18 | 广西柳工机械股份有限公司 | Temp. data collecting and controlling system of engineering mechanical hydraulic motor radiating system |
| JP2008019589A (en) * | 2006-07-12 | 2008-01-31 | Takeuchi Seisakusho:Kk | Working vehicle |
| CN201132972Y (en) * | 2007-12-05 | 2008-10-15 | 三一重工股份有限公司 | Hydraulic drive fan cooling system and fan rotate speed control valve for engineering machinery |
| EP2050970A2 (en) * | 2007-10-16 | 2009-04-22 | Volvo Construction Equipment Holding Sweden AB | Hydraulic circuit for heavy equipment |
| CN201326452Y (en) * | 2008-12-19 | 2009-10-14 | 上海三一科技有限公司 | Hydraulic system for separately controlling inter-cooling and water-cooling in caterpillar crane engine |
| CN201729056U (en) * | 2010-07-28 | 2011-02-02 | 三一集团有限公司 | Heat-radiating system for engineering machinery and engineering machinery |
| CN201747705U (en) * | 2010-07-04 | 2011-02-16 | 陈玉金 | Closed type cooling device of hydraulic system oil tank |
| CN201866019U (en) * | 2010-11-23 | 2011-06-15 | 长沙中联重工科技发展股份有限公司 | Radiating system for engineering machinery |
| CN202251257U (en) * | 2011-09-08 | 2012-05-30 | 安徽星马汽车股份有限公司 | Adjustable cooling device for hydraulic oil of concrete pump truck |
| CN202338535U (en) * | 2011-11-23 | 2012-07-18 | 鼎盛重工机械有限公司 | Hydraulic oil cooling device for engineering machinery |
| CN202560603U (en) * | 2012-04-10 | 2012-11-28 | 中国重汽集团济南动力有限公司 | Fan control system |
-
2012
- 2012-12-27 CN CN2012105792474A patent/CN103062162A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005240935A (en) * | 2004-02-27 | 2005-09-08 | Kobelco Contstruction Machinery Ltd | Working fluid cooling device of construction machine |
| JP2008019589A (en) * | 2006-07-12 | 2008-01-31 | Takeuchi Seisakusho:Kk | Working vehicle |
| CN1949114A (en) * | 2006-11-17 | 2007-04-18 | 广西柳工机械股份有限公司 | Temp. data collecting and controlling system of engineering mechanical hydraulic motor radiating system |
| EP2050970A2 (en) * | 2007-10-16 | 2009-04-22 | Volvo Construction Equipment Holding Sweden AB | Hydraulic circuit for heavy equipment |
| CN201132972Y (en) * | 2007-12-05 | 2008-10-15 | 三一重工股份有限公司 | Hydraulic drive fan cooling system and fan rotate speed control valve for engineering machinery |
| CN201326452Y (en) * | 2008-12-19 | 2009-10-14 | 上海三一科技有限公司 | Hydraulic system for separately controlling inter-cooling and water-cooling in caterpillar crane engine |
| CN201747705U (en) * | 2010-07-04 | 2011-02-16 | 陈玉金 | Closed type cooling device of hydraulic system oil tank |
| CN201729056U (en) * | 2010-07-28 | 2011-02-02 | 三一集团有限公司 | Heat-radiating system for engineering machinery and engineering machinery |
| CN201866019U (en) * | 2010-11-23 | 2011-06-15 | 长沙中联重工科技发展股份有限公司 | Radiating system for engineering machinery |
| CN202251257U (en) * | 2011-09-08 | 2012-05-30 | 安徽星马汽车股份有限公司 | Adjustable cooling device for hydraulic oil of concrete pump truck |
| CN202338535U (en) * | 2011-11-23 | 2012-07-18 | 鼎盛重工机械有限公司 | Hydraulic oil cooling device for engineering machinery |
| CN202560603U (en) * | 2012-04-10 | 2012-11-28 | 中国重汽集团济南动力有限公司 | Fan control system |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104055207A (en) * | 2014-06-17 | 2014-09-24 | 洛阳四达农机有限公司 | Cooling system of silaging machine |
| 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 |
| CN105156405A (en) * | 2015-07-29 | 2015-12-16 | 徐州重型机械有限公司 | Hydraulic oil cooling system, crane and control method for hydraulic oil cooling system |
| CN105156405B (en) * | 2015-07-29 | 2019-03-26 | 徐州重型机械有限公司 | Hydraulic oil cooling system, crane and hydraulic oil cooling system control method |
| CN106607371A (en) * | 2015-10-22 | 2017-05-03 | 西安品质信息科技有限公司 | Temperature self-adaption ultrasonic washing machine based on sensor |
| CN106988853A (en) * | 2017-03-09 | 2017-07-28 | 厦门厦工机械股份有限公司 | A kind of engineering machinery intelligent heat dissipation management system and method |
| CN107139713B (en) * | 2017-06-08 | 2024-04-16 | 龙口中宇热管理系统科技有限公司 | Intelligent heat dissipation system based on variable-angle hydraulic fan and control scheme |
| CN107139713A (en) * | 2017-06-08 | 2017-09-08 | 龙口中宇机械有限公司 | Intelligent heat dissipation system and control program based on variable-angle hydraulic fan |
| CN111173807A (en) * | 2020-01-07 | 2020-05-19 | 南通艾斯安液压科技有限公司 | Hydraulic system heat exchanger capable of controlling temperature |
| CN111536109B (en) * | 2020-04-30 | 2023-04-21 | 三一重机有限公司 | Oil temperature control method and device and engineering machinery |
| CN111536109A (en) * | 2020-04-30 | 2020-08-14 | 三一重机有限公司 | Oil temperature control method and device and engineering machinery |
| CN113931250A (en) * | 2021-10-21 | 2022-01-14 | 徐州徐工挖掘机械有限公司 | Excavator, hydraulic oil cooling fan control method and device thereof, and storage medium |
| CN114105024A (en) * | 2021-10-26 | 2022-03-01 | 甘肃诚信电力科技有限责任公司 | Four-wheel multifunctional tractor and control system |
| CN114105024B (en) * | 2021-10-26 | 2024-03-12 | 甘肃诚信电力科技有限责任公司 | Four-wheel multifunctional tractor |
| CN113983009A (en) * | 2021-10-28 | 2022-01-28 | 三一重机有限公司 | Fan rotating speed control system, fan rotating speed control method and engineering machinery |
| CN113983009B (en) * | 2021-10-28 | 2023-10-27 | 三一重机有限公司 | Fan rotation speed control system, fan rotation speed control method and engineering machinery |
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Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130503 |
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Effective date of registration: 20130503 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Applicant after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Applicant before: Sanyi Heavy Industry Co., Ltd. |
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Application publication date: 20130424 |