CN102425481B - Secondary cooling device of hydraulic excavator engine and regulating method thereof - Google Patents
Secondary cooling device of hydraulic excavator engine and regulating method thereof Download PDFInfo
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- CN102425481B CN102425481B CN 201110282007 CN201110282007A CN102425481B CN 102425481 B CN102425481 B CN 102425481B CN 201110282007 CN201110282007 CN 201110282007 CN 201110282007 A CN201110282007 A CN 201110282007A CN 102425481 B CN102425481 B CN 102425481B
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Abstract
The invention relates to a secondary cooling device of a hydraulic excavator engine, wherein the secondary cooling device comprises an inlet temperature sensor, a temperature control switch, a water inlet pipe, a heat exchanger, a fan, a wind guide cover, a water outlet pipe, an outlet temperature sensor, a backflow pipe, a backflow water pump and a water supply tank, wherein the device is provided with a cooling device with the backflow pipe, a heat radiation system with variable heat radiation amount for the engine of the secondary cooling device and an individual cycle system of cooling water in a heat radiator. The invention also provides a regulating method of the secondary cooling device of the hydraulic excavator engine, the variable regulation and control on heat radiation capability of an excavator motive power system is realized through the secondary cooling device; the cooling water can flow back into a heat exchanger for recycling through the detecting the temperature of the engine cooling water by the temperature sensor, and optimal temperature for the operation of the engine is ensured. Through changing the cycle modes of the engine cooling water in the engine, or in the engine and the heat radiator, the cooling water can be subjected to cycled temperature reduction in the heat radiator, and the secondary cooling device is much practical.
Description
Technical field
The present invention relates to a kind of hydraulic excavator engine cooling unit and using method thereof, particularly a kind of secondary cooling device of hydraulic excavator engine and regulating method thereof.
Background technique
Hydraulic shovel is widely used in the numerous areas of the development of the national economy, particularly in the Inner Mongol of northern China, and Xinjiang, the ground such as Shanxi have abundant mineral resources, and large excavator is at the open coal mine of locality, and large-scale quarry etc. have high usage frequency.Motor is one of pass heavy parts of hydraulic shovel, and cooling system is the important component part of motor, and its effect is that motor is moved in suitable temperature range, thereby makes complete machine have good power performance, economic performance, emission performance and operational reliability.In the working environment such as colliery and quarry, be subject to direct sunlight summer in the open, on every side without effective veil, surface temperature can reach approximately 45 ℃, excavator is long-time large load operation under this environment, the heat that motor produces easily surpasses the heat dissipation potential of cooling system, and then cause engine water temperature high, and affect the hydraulic shovel overall performance, because " boiling ", motor can not work even.Separately extremely low at the northern area winter temperature, as only easily causing motor to be in for a long time the cold operation state when temperature is low by increasing the radiator heat-dissipation ability, both wasted engine power, also can make fuel combustion in poor shape, in the unable and tail gas of engine operation, hydrocarbons content is higher.
The cooling system that uses on excavator at present is all to adopt motor to carry the water pump cooled engine basically, the cooling air that utilizes of hydraulic system is cooling, and on hybrid excavator, cooling system adopts the high and low temperature circulating cooling: i.e. low temperature component such as electric water pump circulating water hydraulic system and electrical apparatus element, motor carries the water pump cooled engine.
Chinese patent CN101907015A relates to a kind of integrative cooling system of hybrid power excavating machine.the integrative cooling system of hybrid power excavating machine that this invention relates to comprises engine blower, engine water pump, the engine water radiator, air-air intercooler, electric water pump, comprehensive radiator, the hydraulic oil oil cooler, electrode controller, generator, turning motor, main pump motor and various pipeline, this invention is characterised in that a water radiator, comprehensive radiator, the air-air intercooler independent circulation circuit that is designed to respectively do for oneself, by pipeline, engine water radiator and motor being carried water pump is communicated with, cooling fan carries out cooling to high temperature circulation water in the engine water radiator, after the oil of hydraulic system by the hydraulic oil oil cooler, water exchange, by pipeline, generator, electric machine controller, main pump motor, turning motor, hydraulic oil cooler, electric water pump, comprehensive radiator are communicated with, electric water pump drives circulating water and carries out cooling by cooling electric fan to the comprehensive radiator high-temperature water, hot air by pipeline after engine booster is communicated with air-air intercooler, and cooling fan carries out cooling to hot air in air-air intercooler.
Chinese patent CN201473992U discloses a kind of radiator of hydraulic excavator, comprise fan, hydraulic oil radiator, engine water radiator, hydraulic oil radiator is connected with hydraulic system by oil inlet pipe, return tube, water radiator is connected with motor by intake pipe, outlet pipe, hydraulic oil radiator, water radiator are arranged side by side the outside at described fan, and by the connection fastened to each other of several fastening pieces.The utility model is simple in structure, change hydraulic oil radiator and water radiator into be arranged side by side mode by the mode of connecting, fan is blown over the cold wind that comes and can directly be blown on two radiators, has strengthened radiating effect, guarantees that motor works at suitable temperature; Simultaneously, be placed in the outside of fan due to radiator, open hood and can clean radiator easily and safeguard behind the door; The import and export of hydraulic oil and the import and export of water are separately positioned on the outside of radiator, can facilitate connection, maintenance and the maintenance of pipeline.
Chinese patent CN1169176A relates to a kind of diesel engine excavator cooling system for drives and regulating method thereof, this scheme is a kind of method that is used for regulating superpower diesel engine excavator cooling system for drives, here thermostat that is contained in the diesel engine zone is opened the passage of the water cooler that concurs from diesel engine to and fan when water temperature given in advance, the temperature measuring equipment that wherein is contained in passage area is controlled fan in this wise: can be given in advance at one, the rotating speed that surpasses the temperature range internal fan of thermostat controlled water temperature is regulated in the scope between maximum (top) speed at 0 rev/min.
Technical problem to be solved by this invention is to provide a kind of cooling system of variable heat dissipation potential, optionally increases the heat dissipation potential of excavator cooling system according to ambient temperature conditions by secondary cooling apparatus, solves the engine high-temperature problem.
Summary of the invention
In view of the above problems, the object of the invention is to overcome the shortcoming of prior art, a kind of hydraulic excavator engine cooling unit with variable heat dissipation potential is provided, optionally increase the heat dissipation potential of excavator cooling system by secondary cooling apparatus according to ambient temperature conditions, solve the engine high-temperature problem.
The object of the invention to solve the technical problems realizes by the following technical solutions.
The present invention relates to a kind of secondary cooling device of hydraulic excavator engine, comprise inlet temperature sensor, temperature detect switch (TDS), intake pipe, heat exchanger, fan, wind scooper, outlet pipe, outlet temperature sensor, reflow pipe, backflow water pump and water supply tank.Described intake pipe is connected with the entrance point of heat exchanger, and the outlet end of heat exchanger connects outlet pipe successively, reflow pipe and water supply tank; The water intake of described intake pipe is provided with inlet temperature sensor and temperature detect switch (TDS), and described backflow water pump is arranged on intake pipe near heat exchanger one side, and the water outlet of described outlet pipe is provided with outlet temperature sensor; Described fan, wind scooper are arranged on the heat exchanger bottom.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid intake pipe, it is shaped as " T " font, connects respectively main radiator, water inflow of the engine pipe, second cooling heat exchanger import;
Aforesaid outlet pipe, it is shaped as " ten " font, connecting secondary cooling heat exchanger outlet respectively, water inflow of the engine pipe, reflow pipe, water supply tank.
Aforesaid hydraulic excavator engine cooling unit, its intake pipe, heat exchanger, outlet pipe, reflow pipe are connected with water supply tank and are connected, and consist of independent circulation circuit.
Aforementioned fan is by the motor drive, not consumption of engine power.
Aforementioned backflow water pump is by motor driving, and actuating signal is by the central control unit transmission.
In addition, the present invention also provides the regulating method that uses the hydraulic excavator engine cooling unit, the steps include:
1. cooling water after inlet temperature sensor detects, enters second cooling heat exchanger through intake pipe, carries out secondary cooling;
2. inlet temperature sensor detects the water temperature of one-level radiator outlet place cooling water, when water temperature during higher than setting value, the water intake temperature transducer is passed to central control unit with temperature signal, temperature detect switch (TDS) is controlled the water inlet valve open, two-class heat dissipation device water route is led in unlatching, cooling water enters second cooling heat exchanger, simultaneously the secondary cooling apparatus starting fan
3. cooling water arrives water outlet after secondary is cooling, and the water outlet temperature transducer detects water temperature, and transmission of signal is to central control unit, and temperature is lower than setting value, and temperature detect switch (TDS) is opened the valve that leads to motor, and cooling water enters engine water jacket through water pump; If secondary cooling apparatus outlet port temperature is higher than setting value after testing, lead to the valve opening of reflow pipe, cooling water reenters heat exchanger through reflow pipe and carries out cooling;
4. open simultaneously when the backflow water pump, the water supply tank valve opening will be laid in cooling water and put into motor, guarantee that motor normally moves.
Advantage of the present invention is: realize the variable regulation and control of excavator power system heat dissipation potential by secondary cooling apparatus, detect by temperature transducer and enter engine cooling water temperature, cooling water can reflux and enter heat exchanger and carry out recirculation, guarantees motor operation optimum temperature.Change the available engine cooling water at engine interior, or the pattern of motor and radiator inner loop, make cooling water carry out circulation temperature lowering in radiator inside, be very suitable for practicality.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
With reference to appended accompanying drawing, to describe more fully embodiments of the invention.Yet appended accompanying drawing only is used for explanation and sets forth, and does not consist of limitation of the scope of the invention.
Fig. 1 illustrates hydraulic excavator engine cooling unit structural representation of the present invention.
Fig. 2 illustrates " T " font intake pipe Placement schematic diagram.
Fig. 3 illustrates " ten " font outlet pipe Placement schematic diagram.
Embodiment
Reach for further setting forth the present invention technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, a kind of remote control lock for excavator to foundation the present invention proposes is described in detail as follows.
Different embodiments of the invention will details are as follows, to implement different technical characteristics of the present invention, will be understood that, the unit of the specific embodiment of the following stated and configuration are in order to simplify the present invention, and it does not only limit the scope of the invention for example.
Figure 1 shows that secondary cooling device of hydraulic excavator engine structural representation of the present invention.The present invention relates to a kind of hydraulic excavator engine cooling unit, comprise inlet temperature sensor 1, temperature detect switch (TDS) 2, intake pipe 3, heat exchanger 4, fan 5, wind scooper 6, outlet pipe 7, outlet temperature sensor 8, reflow pipe 9, backflow water pump 10 and water supply tank 11.Described intake pipe 3 is connected with the entrance point of heat exchanger 4, and the outlet end of heat exchanger 4 connects outlet pipe 7 successively, reflow pipe 9 and water supply tank 11; The water intake of described intake pipe 3 is provided with inlet temperature sensor 1 and temperature detect switch (TDS) 2, and described backflow water pump 10 is arranged on intake pipe 3 near heat exchanger 4 one sides, and the water outlet of described outlet pipe 7 is provided with outlet temperature sensor 8; Fan 5, wind scooper 6 are arranged on heat exchanger 4 bottoms.Aforesaid intake pipe 3, it is shaped as " T " font, connects respectively main radiator, water inflow of the engine pipe, second cooling heat exchanger import; Aforesaid outlet pipe 7, it is shaped as " ten " font, connecting secondary cooling heat exchanger outlet respectively, water inflow of the engine pipe, reflow pipe 9, water supply tank 11.Aforementioned fan 5 is by the motor drive, not consumption of engine power.Aforementioned backflow water pump 10 is by motor driving, and actuating signal is by the central control unit transmission.Aforesaid hydraulic excavator engine cooling unit, its intake pipe 3, heat exchanger 4, outlet pipe 7, reflow pipe 9 are connected with water supply tank successively and are connected, and consist of independent circulation circuit.
In addition, the present invention also provides the regulating method that uses the hydraulic excavator engine cooling unit, the steps include:
1. cooling water after inlet temperature sensor 1 detects, enters second cooling heat exchanger 4 through intake pipe 3, carries out secondary cooling;
2. inlet temperature sensor 1 detects the water temperature of one-level radiator outlet place cooling water, when water temperature during higher than setting value, the water intake temperature transducer is passed to central control unit with temperature signal, temperature detect switch (TDS) 2 is controlled the water inlet valve open, two-class heat dissipation device water route is led in unlatching, cooling water enters second cooling heat exchanger, and secondary cooling apparatus fan 5 starts simultaneously;
3. cooling water arrives water outlet after secondary is cooling, and water outlet temperature transducer 8 detects water temperatures, and transmission of signal is to central control unit, and temperature is lower than setting value, and temperature detect switch (TDS) is opened the valve that leads to motor, and cooling water enters engine water jacket through water pump; If secondary cooling apparatus outlet port temperature is higher than setting value after testing, lead to the valve opening of reflow pipe 9, cooling water reenters heat exchanger 4 through reflow pipe 9 and carries out cooling;
4. open simultaneously when backflow water pump 10, water supply tank 11 valve openings will be laid in cooling water and put into motor, guarantee that motor normally moves.
By explanation and accompanying drawing, provided the exemplary embodiments of the specified structure of embodiment.Although foregoing invention has proposed existing preferred embodiment, yet these contents are not as limitation.For a person skilled in the art, after reading above-mentioned explanation, various changes and modifications undoubtedly will be apparent.Therefore, appending claims should be regarded whole variations and the correction of containing true intention of the present invention and scope as.Any and all scope of equal value and contents, all should think still to belong in the intent of the present invention and scope in claims scope.
Claims (6)
1. secondary cooling device of hydraulic excavator engine, comprise inlet temperature sensor, temperature detect switch (TDS), intake pipe, heat exchanger, fan, wind scooper, outlet pipe, outlet temperature sensor, reflow pipe, backflow water pump and water supply tank, it is characterized in that: described intake pipe is connected with the entrance point of heat exchanger, the outlet end of heat exchanger connects outlet pipe successively, reflow pipe and water supply tank; The water intake of described intake pipe is provided with inlet temperature sensor and temperature detect switch (TDS), and described backflow water pump is arranged on intake pipe near heat exchanger one side, and the water outlet of described outlet pipe is provided with outlet temperature sensor; Described fan, wind scooper are arranged on the heat exchanger bottom; Described intake pipe, described heat exchanger, described outlet pipe, described reflow pipe and the water supply tank of being connected connect, consist of independent circulation circuit successively.
2. secondary cooling device of hydraulic excavator engine as claimed in claim 1, it is characterized in that: described intake pipe, it is shaped as " T " font, connects respectively main radiator, water inflow of the engine pipe and second cooling heat exchanger import.
3. secondary cooling device of hydraulic excavator engine as claimed in claim 1 is characterized in that: described outlet pipe, it is shaped as " ten " font, connecting secondary cooling heat exchanger outlet respectively, water inflow of the engine pipe, reflow pipe and water supply tank.
4. secondary cooling device of hydraulic excavator engine as claimed in claim 1 is characterized in that: described fan is by the motor drive, not consumption of engine power.
5. secondary cooling device of hydraulic excavator engine as claimed in claim 1, it is characterized in that: described backflow water pump is by motor driving, and actuating signal is by the central control unit transmission.
6. the regulating method of a secondary cooling device of hydraulic excavator engine as claimed in claim 1, it is characterized in that: its regulating step is as follows:
1. cooling water after inlet temperature sensor detects, enters second cooling heat exchanger through intake pipe, carries out secondary cooling;
2. inlet temperature sensor detects the water temperature of one-level radiator outlet place cooling water, when water temperature during higher than setting value, the water intake temperature transducer is passed to central control unit with temperature signal, temperature detect switch (TDS) is controlled the water inlet valve open, two-class heat dissipation device water route is led in unlatching, cooling water enters second cooling heat exchanger, simultaneously the secondary cooling apparatus starting fan;
3. cooling water arrives water outlet after secondary is cooling, and the water outlet temperature transducer detects water temperature, and transmission of signal is to central control unit, and temperature is lower than setting value, and temperature detect switch (TDS) is opened the valve that leads to motor, and cooling water enters engine water jacket through water pump; If secondary cooling apparatus outlet port temperature is higher than setting value after testing, lead to the valve opening of reflow pipe, cooling water reenters heat exchanger through reflow pipe and carries out cooling;
4. open simultaneously when the backflow water pump, the water supply tank valve opening will be laid in cooling water and put into motor, to guarantee that motor normally moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282007 CN102425481B (en) | 2011-09-22 | 2011-09-22 | Secondary cooling device of hydraulic excavator engine and regulating method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282007 CN102425481B (en) | 2011-09-22 | 2011-09-22 | Secondary cooling device of hydraulic excavator engine and regulating method thereof |
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| CN102425481A CN102425481A (en) | 2012-04-25 |
| CN102425481B true CN102425481B (en) | 2013-11-06 |
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| CN 201110282007 Expired - Fee Related CN102425481B (en) | 2011-09-22 | 2011-09-22 | Secondary cooling device of hydraulic excavator engine and regulating method thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102830355B (en) * | 2012-09-04 | 2015-10-28 | 宁波菲仕运动控制技术有限公司 | A kind of electromechanical testing robotization cooling system |
| CN103321734A (en) * | 2013-07-01 | 2013-09-25 | 中国北车集团大连机车车辆有限公司 | Cooling water system of diesel locomotive |
| CN103469846B (en) * | 2013-08-24 | 2016-03-02 | 泰安海松机械有限公司 | The engine cooling system of a kind of plateau sliding loader |
| CN105735387A (en) * | 2014-12-10 | 2016-07-06 | 天津建筑机械厂 | Auxiliary cooling device of dual-fuel bulldozer |
| CN106759617B (en) * | 2016-12-09 | 2019-10-29 | 广西玉柴重工有限公司 | A kind of cooling system of battery power supply electric hydraulic excavating machine |
| CN106930813A (en) * | 2017-05-11 | 2017-07-07 | 苏州工业园区驿力机车科技股份有限公司 | A kind of temperature-controlled cooling system |
| WO2019007118A1 (en) * | 2017-11-15 | 2019-01-10 | 安徽江淮汽车集团股份有限公司 | Truck cooling and noise balancing control system and control method |
| CN109226094A (en) * | 2018-08-08 | 2019-01-18 | 武汉武钢华工激光大型装备有限公司 | A kind of high power laser light cleaning head |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB988177A (en) * | 1962-03-09 | 1965-04-07 | Council Scient Ind Res | Improvements in hydraulic power transmission systems |
| JP4573751B2 (en) * | 2005-11-02 | 2010-11-04 | 日立建機株式会社 | Cooling fan drive device for traveling work machine |
| CN201090283Y (en) * | 2007-09-20 | 2008-07-23 | 徐州重型机械有限公司 | Cooling device for double-circulating watercourse double-fan crane |
| JP2010249083A (en) * | 2009-04-20 | 2010-11-04 | Caterpillar Sarl | Cooling system of construction machine and heat exchanger used in the cooling system |
| CN101649768A (en) * | 2009-09-09 | 2010-02-17 | 奇瑞汽车股份有限公司 | Engine cooling system |
| JP2011106786A (en) * | 2009-11-20 | 2011-06-02 | Hitachi Constr Mach Co Ltd | Heat exchanger for construction machine |
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