CN102535572B - Hybrid power hydraulic excavator and cooling system thereof - Google Patents
Hybrid power hydraulic excavator and cooling system thereof Download PDFInfo
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- CN102535572B CN102535572B CN201210042707.XA CN201210042707A CN102535572B CN 102535572 B CN102535572 B CN 102535572B CN 201210042707 A CN201210042707 A CN 201210042707A CN 102535572 B CN102535572 B CN 102535572B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2095—Control of electric, electro-mechanical or mechanical equipment not otherwise provided for, e.g. ventilators, electro-driven fans
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Operation Control Of Excavators (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
本发明提供了一种混合动力液压挖掘机及其冷却系统。该混合动力液压挖掘机冷却系统包括：发动机(10)；发动机风扇(11)，与发动机(10)驱动连接；集成散热系统(20)，设置在发动机风扇(11)的出风方向上，包括冷却装置(24)；泵体(30)，与冷却装置(24)通过管路串联，泵体(30)驱动冷却介质在管路内循环流动；被冷却装置(40)，串联设置在泵体(30)和冷却装置(24)之间的管路上。根据本发明的混合动力液压挖掘机冷却系统，能够合理利用混合动力挖掘机上有限的空间，保证动力电机及其控制器和回转电机及其控制器的冷却效果。
The invention provides a hybrid power hydraulic excavator and a cooling system thereof. The cooling system of the hybrid hydraulic excavator comprises: an engine (10); an engine fan (11), driven and connected with the engine (10); an integrated cooling system (20), arranged on the air outlet direction of the engine fan (11), including The cooling device (24); the pump body (30) is connected in series with the cooling device (24) through the pipeline, and the pump body (30) drives the cooling medium to circulate in the pipeline; the cooling device (40) is arranged in series on the pump body (30) and the pipeline between the cooling device (24). According to the cooling system of the hybrid power hydraulic excavator of the present invention, the limited space on the hybrid power excavator can be reasonably utilized to ensure the cooling effect of the power motor and its controller, and the rotary motor and its controller.
Description
Technical field
The present invention relates to earthmoving equipment field, in particular to a kind of hybrid power hydraulic excavator and cooling system thereof.
Background technology
The cooling system of conventional hydraulic excavator is mainly divided into three parts: one, motor itself is cooling; Two, engine charge is cooling; Three, hydraulic oil is cooling.Hybrid power hydraulic excavator system than transmitting hydraulic excavator system many auxiliary power source being formed by power motor, turning motor and corresponding controller and super capacitor etc.Power motor in auxiliary power source and controller and turning motor and controller all need cooling, if adopt independently cooling system, have following several respects problem:
(1) power issue of radiator fan motor and pump motor;
(2) on excavator, installing space is limited.
If motor controller in auxiliary power source is adopted to independently cooling system, owing to only having 24VDC battery on excavator, if radiator fan motor and pump motor adopt storage battery power supply, increase the load of generator on battery and motor; If adopt 220VAC power supply, need again to increase the inverter from the direct current of super capacitor to 220VAC, make complex system.Because hybrid excavator has increased the parts such as power motor and controller, turning motor and controller and super capacitor than conventional hydraulic excavator, make on excavator installing space limited, if so increase again the independently parts such as motor radiator, pump motor and inverter, will make troubles to installation, debugging and maintenance.
Summary of the invention
The present invention aims to provide a kind of hybrid excavator and cooling system thereof, can rationally utilize space limited on hybrid excavator, ensures the cooling effect of power motor and controller and turning motor and controller thereof.
To achieve these goals, according to an aspect of the present invention, provide a kind of hybrid power hydraulic excavator cooling system, having comprised: motor; Engine blower, is connected with motor driven; Integrated heat dissipation system, is arranged on the air-out direction of engine blower, comprises cooling unit; The pump housing, connects by pipeline with cooling unit, and pump housing drive medium circulates in pipeline; The device that is cooled, series connection is arranged on the pipeline between the pump housing and cooling unit.
Further, pipeline comprises the first cooling branch road and the second cooling branch road that are arranged in parallel, the device that is cooled comprises turning motor, power motor, turning motor controller and power motor controller, turning motor and power motor are arranged on the first cooling branch road, and turning motor controller and power motor controller are arranged on the second cooling branch road.
Further, turning motor and power motor are successively set on the pipeline between the pump housing and cooling unit along the flow direction of medium.
Further, be cooled and between device and cooling unit, be provided with the temperature pick up of measuring media temperature, between temperature pick up and the pump housing, be provided with pump housing adjusting device.
Further, pump housing adjusting device comprises with the pump housing and drives the CD-ROM drive motor being connected, the driving power of connecting with CD-ROM drive motor and relay switch, between relay switch and temperature pick up, be provided with relay switch controller, the state of the thermorelay switch transmitting according to temperature pick up.
Further, driving power is 24V dc source.
Further, integrated heat dissipation system also comprises engine water cooler, engine intercooler and hydraulic oil cooler, cooling unit, engine intercooler and hydraulic oil cooler are arranged in parallel, and engine water cooler is arranged on the leeward side of cooling unit, engine intercooler and hydraulic oil cooler.
Cooling unit according to a further aspect in the invention, provides a kind of hybrid power hydraulic excavator, comprises cooling system, and this cooling system is above-mentioned hybrid power hydraulic excavator cooling system.
In accordance with a further aspect of the present invention, a kind of hybrid power hydraulic excavator is provided, comprise motor, auxiliary power source, integrated heat dissipation system and for integrated heat dissipation system is carried out to air-cooled engine blower, integrated heat dissipation system comprises the engine water cooler cooling for motor itself, for the cooling engine intercooler of engine charge and for the oil cooled hydraulic oil cooler of hydraulic pressure, this integrated heat dissipation system also comprises the cooling unit cooling for auxiliary power source, cooling unit and auxiliary power source are connected to form the loop of a sealing by pipeline, in this loop, comprise mobile cooling medium capable of circulation.
Further, in the loop that cooling unit and auxiliary power source form, be also connected with the pump housing for driving cooling medium to circulate.
Further, in the loop that cooling unit and auxiliary power source form, be also connected with temperature pick up, between temperature pick up and the pump housing, be provided with pump housing adjusting device, this pump housing adjusting device is in parallel with auxiliary power source, temperature pick up detects cooling medium auxiliary power source is carried out to cooling temperature afterwards, and the temperature that pump housing adjusting device detects according to temperature pick up regulates the rotating speed of the pump housing.
Further, pump housing adjusting device comprises with the pump housing and drives the CD-ROM drive motor being connected, the driving power of connecting with CD-ROM drive motor and relay switch, between relay switch and temperature pick up, be provided with relay switch controller, the closed or disconnection of the thermorelay switch that relay switch controller detects according to temperature pick up.
Apply technical scheme of the present invention, hybrid power hydraulic excavator cooling system comprises motor, engine blower, integrated heat dissipation system, the pump housing and the device that is cooled.Between engine blower and motor, drive and be connected, integrated heat dissipation system is arranged on the air-out direction of engine blower, comprise cooling unit, the pump housing is connected with motor and cooling unit, by cooling unit, the medium in the pump housing is carried out coolingly, the device that is cooled series connection is arranged on the cooling path between the pump housing and cooling unit.By being arranged on integrated heat spreader integrated cooling unit, on the basis of installing space that reduces cooling unit, carry out cooling by engine blower to cooling unit, without cooling unit being arranged to independent cooling fan, further save space, reduce cost, ensured the cooling effect of cooling unit.
Be cooled and between device and cooling unit, be provided with the temperature pick up of measuring media temperature, between temperature pick up and the pump housing, be provided with pump housing adjusting device.The temperature that pump housing adjusting device can record according to temperature pick up regulates the pump housing, thereby determines suitable cooling power for the pump housing, gives full play to the cooling effect of cooling unit, falls low-energy expending simultaneously.
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 shows the syndeton schematic diagram of hybrid excavator cooling system according to an embodiment of the invention;
Fig. 2 shows the motor of hybrid excavator cooling system and the spatial relation figure of integrated cooling system according to an embodiment of the invention; And
Fig. 3 shows the structural representation of the integrated cooling system of hybrid excavator cooling system according to an embodiment of the invention.
Detailed description of the invention
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
As shown in Figure 1, according to embodiments of the invention, hybrid power hydraulic excavator cooling system comprises motor 10, engine blower 11, integrated heat dissipation system 20, the pump housing 30 and the device 40 that is cooled.In the present embodiment, this auxiliary power source that device 40 is hybrid power hydraulic excavator that is cooled, this auxiliary power source for jointly driving the work system of this hybrid power hydraulic excavator under prescribed situation with motor 10.Between motor 10 and engine blower 11, be connected for driving, motor 10 provides power source for engine blower 11.Integrated heat dissipation system 20 is arranged on the air-out direction of engine blower 11, carries out air-cooled by engine blower 11 to integrated heat dissipation system 20.Medium in the pump housing 30 is undertaken after cooling by integrated heat dissipation system 20, the device 40 that is cooled of flowing through, and to being cooled, device 40 cools.In figure, the direction of arrow represents wind direction.
Incorporated by reference to referring to shown in Fig. 2 and Fig. 3, integrated heat dissipation system 20 comprises engine water cooler 21, engine intercooler 22, hydraulic oil cooler 23 and cooling unit 24, wherein between engine intercooler 22, cooling unit 24 and hydraulic oil cooler 23, be arranged in parallel successively from top to bottom, and be positioned at the windward side of engine blower 11.Engine water cooler 21 is arranged on the leeward side of engine intercooler 22, cooling unit 24 and hydraulic oil cooler 23, forms stacked relation with engine intercooler 22, cooling unit 24 and hydraulic oil cooler 23.Integrated heat dissipation system 20 is fixed together engine water cooler 21, engine intercooler 22, hydraulic oil cooler 23 and cooling unit 24 by junction plate and connecting bolt etc., and the relative position between engine water cooler 21, engine intercooler 22, hydraulic oil cooler 23 and cooling unit 24 is fixed.This setup has reduced the area of integrated heat dissipation system 20, has reduced the space hold of integrated heat dissipation system 20, can ensure again the cooling effect of cooling unit 24 simultaneously.
Between the pump housing 30 and cooling unit 24, connect by pipeline; the pump housing 30 drives cooling medium to circulate in pipeline; make to carry out cooling through the cooled cooling medium circulation of apparatus for supercooling 24 to the device 40 that is cooled; reduce the device 40 that the is cooled heat producing in engineering of working, the protection device 40 that is cooled can not damage or affect performance because high temperature does not cause.
The installing space filling on excavator is generally comparatively limited, the device 40 that is cooled is carried out to cooling cooling unit and be difficult to have enough installing spaces to be installed, and therefore the device 40 that is cooled cooling is brought to very large inconvenience.Cooling unit 24 is integrated in integrated heat dissipation system 20, avoid cooling unit 24 that needed separate space is set separately, simplify cooling system, and can cool to cooling unit 24 by engine blower 11, without cooling unit 24 is added to independent cooling fan, also without providing independent power supply to this cooling fan, therefore, further compress installing space, be convenient to installation and the use of cooling unit 24, reduce cost, ensured the cooling effect to the device 40 that is cooled.
Pipeline comprises the first cooling branch road and the second cooling branch road, and the first cooling branch road and the second cooling branch road are arranged between the port of export and cooling unit 24 of the pump housing 30.The device 40 that is cooled comprises turning motor 41, power motor 42, turning motor controller 43 and power motor controller 44.Turning motor 41 and power motor 42 are arranged on the first cooling branch road of pipeline.Turning motor controller 43 and power motor controller 44 are arranged on the second cooling branch road of pipeline, two cooling branch circuit parallel connections are arranged on the cooling line that the pump housing 30 forms, and carry out cooling to turning motor 41, power motor 42, turning motor controller 43 and power motor controller 44.The first cooling branch road and the second cooling branch road are adopted and be connected in parallel, can carry out respectively coolingly to two branch roads, can ensure the overall cooling effect to the device 40 that is cooled.
Turning motor 41 and power motor 42 are successively set on the pipeline between the pump housing 30 and cooling unit 24 along the flow direction of medium.This setup is based on so a kind of situation, and the adjacent motor 10 of power motor 42 is installed.In this case, the temperature of power motor 42 is more much higher than turning motor 41, therefore, first to turning motor 41 carry out cooling after, the temperature of cooling medium is still lower, can proceed effective cooling to power motor 42, plays good cooling effect.
Between device 40 and cooling unit 24, be provided with temperature pick up 31 being cooled, for detection of the temperature of the device 40 that is cooled being carried out to the cooling medium after cooling.Between temperature pick up 31 and the pump housing 30, be provided with pump housing adjusting device 50, the temperature detecting according to temperature pick up 31 regulates the rotating speed of the pump housing 30, thereby adjust the discharge capacity of the pump housing 30, cooling performance to the pump housing 30 is adjusted, make it to match with the temperature of cooling medium, realize the good cooling effect to the device 40 that is cooled, reduce energy consumption simultaneously, improve energy utilization rate.
Pump housing adjusting device 50 comprises with the pump housing 30 and drives the CD-ROM drive motor 51 being connected and the driving power 52 of connecting with CD-ROM drive motor.The power resources of the pump housing 30 can be alternating current, can be also direct current, can drive the pump housing 30 to realize pumping by motor 10, also can realize by independent drive motors the pumping of the pump housing 30.The pump housing 30 drives and is connected to CD-ROM drive motor 51, and CD-ROM drive motor 51 is connected with driving power 52, and by driving power 52, CD-ROM drive motor 51 is rotated, thereby drives the pump housing 30 to rotate.In the middle of the present embodiment, driving power 52 is 24V battery, and CD-ROM drive motor is 24V direct current generator.Wherein charge in batteries is that the generator of the 70A that carries with motor 10 is realized.24V voltage is safe voltage, can ensure operating personnel's safety operation, reduces the danger of driving power to operating personnel, thereby improves the security performance in excavator operating process.
Pump housing adjusting device 50 also comprise the relay switch 53 on the connecting circuit being arranged between CD-ROM drive motor 51 and driving power 52 and be arranged on relay switch 53 and temperature pick up 31 between relay switch controller 54.Relay switch controller 54, for the closed and disconnected of control relay switch 53, includes control circuit, and control circuit is built-in with comparison module, is provided with fiducial temperature on comparison module.
When temperature pick up 31 passes to the temperature of the cooling medium recording after relay switch controller 54, the comparison module in relay switch controller 54 compares this temperature and fiducial temperature.In the time that this temperature is greater than fiducial temperature, relay switch controller 54 control relay switch 53 closures, the circuit communication of CD-ROM drive motor, the pump housing 30 rotates, drive cooling medium flows, and after cooling unit 24 place's coolings, continues the device 40 that is cooled to carry out cooling.In the time that this temperature is less than or equal to fiducial temperature, relay switch controller 54 control relay switches 53 disconnect, and the circuit of CD-ROM drive motor disconnects, and the pump housing 30 stops operating, without drive cooling medium to lower the temperature to the device 40 that is cooled by the pump housing 30.Cooling medium can be water or hydraulic pressure wet goods.
By temperature pick up 31, the pump housing 30 is regulated, can in the time that coolant temperature is lower, not export the energy to the pump housing 30, in the time that coolant temperature is higher, drive the pump housing 30 to rotate, cooling medium is lowered the temperature, real-time is better, reduce energy waste, improved control accuracy.
According to embodiments of the invention, hybrid power hydraulic excavator comprises cooling system, and this cooling system is above-mentioned hybrid power hydraulic excavator cooling system.
According to another embodiment of the present invention, this embodiment is based on above-described embodiment.The hybrid power hydraulic excavator of the present embodiment comprises motor 10, auxiliary power source, integrated heat dissipation system 20 and for integrated heat dissipation system 20 is carried out to air-cooled engine blower 11.Integrated heat dissipation system 20 comprises the engine water cooler 21 cooling for motor itself, for the cooling engine intercooler 22 of engine charge and for the oil cooled hydraulic oil cooler 23 of hydraulic pressure.This integrated heat dissipation system 20 also comprises the cooling unit 24 cooling for auxiliary power source, and cooling unit 24 and auxiliary power source are connected to form the loop of a sealing by pipeline, comprise mobile cooling medium capable of circulation in this loop.In the loop that cooling unit 24 and auxiliary power source form, be also connected with the pump housing 30 for driving cooling medium to circulate.
In the loop that cooling unit 24 and auxiliary power source form, be also connected with temperature pick up 31, between temperature pick up 31 and the pump housing 30, be provided with pump housing adjusting device 50.This pump housing adjusting device 50 is in parallel with auxiliary power source, and temperature pick up 31 detects cooling medium auxiliary power source is carried out to cooling temperature afterwards, and the temperature that pump housing adjusting device 50 detects according to temperature pick up 31 regulates the rotating speed of the pump housing 30.
Pump housing adjusting device 50 comprises with the pump housing 30 and drives the CD-ROM drive motor 51 being connected, the driving power 52 of connecting with CD-ROM drive motor 51 and relay switch 53, between relay switch 53 and temperature pick up 31, be provided with relay switch controller 54, the closed or disconnection of the thermorelay switch 53 that relay switch controller 54 detects according to temperature pick up 31.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect: hybrid power hydraulic excavator cooling system comprises motor, engine blower, integrated heat dissipation system, the pump housing and the device that is cooled.Between engine blower and motor, drive and be connected, integrated heat dissipation system is arranged on the air-out direction of engine blower, comprise cooling unit, the pump housing is connected with motor and cooling unit, by cooling unit, the medium in the pump housing is carried out coolingly, the device that is cooled series connection is arranged on the cooling path between the pump housing and cooling unit.By being arranged on integrated heat spreader integrated cooling unit, on the basis of installing space that reduces cooling unit, carry out cooling by engine blower to cooling unit, without cooling unit being arranged to independent cooling fan, further save space, reduce cost, ensured the cooling effect of cooling unit.Be cooled and between device and cooling unit, be provided with the temperature pick up of measuring media temperature, between temperature pick up and the pump housing, be provided with pump housing adjusting device.The temperature that pump housing adjusting device can record according to temperature pick up regulates the pump housing, thereby determines suitable cooling power for the pump housing, gives full play to the cooling effect of cooling unit, falls low-energy expending simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210042707.XA CN102535572B (en) | 2012-02-23 | 2012-02-23 | Hybrid power hydraulic excavator and cooling system thereof |
| PCT/CN2012/082185 WO2013123774A1 (en) | 2012-02-23 | 2012-09-27 | Hybrid hydraulic excavator and cooling system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210042707.XA CN102535572B (en) | 2012-02-23 | 2012-02-23 | Hybrid power hydraulic excavator and cooling system thereof |
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| Publication Number | Publication Date |
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| CN102535572A CN102535572A (en) | 2012-07-04 |
| CN102535572B true CN102535572B (en) | 2014-06-04 |
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| CN201210042707.XA Active CN102535572B (en) | 2012-02-23 | 2012-02-23 | Hybrid power hydraulic excavator and cooling system thereof |
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| CN (1) | CN102535572B (en) |
| WO (1) | WO2013123774A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535572B (en) * | 2012-02-23 | 2014-06-04 | 中联重科股份有限公司 | Hybrid power hydraulic excavator and cooling system thereof |
| US9009993B2 (en) | 2012-09-21 | 2015-04-21 | Harnischfeger Technologies, Inc. | Internal venting system for industrial machines |
| CN102926417A (en) * | 2012-11-16 | 2013-02-13 | 山推工程机械股份有限公司 | Electric drive bulldozer and cooling device of electric drive bulldozer |
| CN108999688B (en) * | 2018-08-22 | 2024-04-02 | 东风商用车有限公司 | Combined fan cooling system for vehicle and application method thereof |
| JP2020153115A (en) * | 2019-03-19 | 2020-09-24 | 住友建機株式会社 | Excavator |
| CN111877452A (en) * | 2020-07-30 | 2020-11-03 | 雷沃工程机械集团有限公司 | Hydraulic oil cooling control system and method for excavator |
| CN112648060B (en) * | 2020-12-23 | 2022-05-03 | 徐州徐工挖掘机械有限公司 | Digging machine |
| CN113771612A (en) * | 2021-08-27 | 2021-12-10 | 三一汽车制造有限公司 | Cooling system, cooling method and vehicle |
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| JP2001220770A (en) * | 2000-02-10 | 2001-08-17 | Hitachi Constr Mach Co Ltd | Construction machine |
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- 2012-09-27 WO PCT/CN2012/082185 patent/WO2013123774A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013123774A1 (en) | 2013-08-29 |
| CN102535572A (en) | 2012-07-04 |
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Application publication date: 20120704 Assignee: Shaanxi Zhonglian Western earthwork Machinery Co.,Ltd. Assignor: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Contract record no.: X2023980042754 Denomination of invention: Hybrid hydraulic excavator and its cooling system Granted publication date: 20140604 License type: Common License Record date: 20231010 |
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Application publication date: 20120704 Assignee: Zoomlion earth moving machinery Co.,Ltd. Assignor: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Contract record no.: X2023980043517 Denomination of invention: Hybrid hydraulic excavator and its cooling system Granted publication date: 20140604 License type: Common License Record date: 20231017 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Shaanxi Zhonglian Western earthwork Machinery Co.,Ltd. Assignor: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Contract record no.: X2023980042754 Date of cancellation: 20250514 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Zoomlion earth moving machinery Co.,Ltd. Assignor: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Contract record no.: X2023980043517 Date of cancellation: 20250516 |