CN204151846U - The hydraulic oil cooling system that can independently regulate and control in a kind of excavator - Google Patents
The hydraulic oil cooling system that can independently regulate and control in a kind of excavator Download PDFInfo
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- CN204151846U CN204151846U CN201420591815.7U CN201420591815U CN204151846U CN 204151846 U CN204151846 U CN 204151846U CN 201420591815 U CN201420591815 U CN 201420591815U CN 204151846 U CN204151846 U CN 204151846U
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Abstract
The utility model provides the hydraulic oil cooling system that can independently regulate and control in a kind of excavator.Solve existing cooling system uncontrollable, and recirculating oil quantity is unstable and impact the problems such as large.The utility model comprises by hydraulic oil container, the oil return circuit that work oil feed pump and main control valve are connected to form, also comprise heat radiation oil circuit and cold energy gathering oil circuit, first heat radiation oil circuit connects hydraulic oil container, then be connected in series cooling oil pump, return after being connected in series radiator again and be connected to hydraulic oil container, first cold energy gathering oil circuit connects work oil feed pump, then serial connection cooling oil feed pump, again and connect cooling motor and proportional pressure control valve, cooling motor drives and connects cooling fan, the air supply direction of cooling fan is just to radiator, set temperature sensor in hydraulic oil container, temperature pick up is by signal of telecommunication connection control device, controller electricly connects proportional pressure control valve.The utility model belongs to autonomous system thus avoids impacting cooling system; According to temperature controlled cooling model intensity, energy consumption can be saved again, life-extending.
Description
Technical field
The utility model belongs to technical field of hydraulic pressure, relates to the hydraulic oil cooling system that can independently regulate and control in a kind of HYDRAULIC CONTROL SYSTEM for excavator, particularly a kind of excavator.
Background technology
The major function of excavator is digging material, and handling material or loaded material, repeat.Because excavator has construction flexibly, efficiency advantages of higher, is thus widely used in industry and civilian construction, exploitation of mineral resources, urban construction, irrigation and water conservancy etc. and builds occasion.
The working method of current excavator, for control equipment, slewing equipment, running gear respectively by piston hydraulic cylinder single in hydraulic system, hydraulic gyration mechanism, hydraulic traveling mechanism, realizes digging material from earth's surface and transfers to emptying point.Wherein hydraulic system is important ingredient, for each action of excavator provides hydraulic oil.During excavator work, completed by the co-operating of each several part device.
Because excavator is the high efficiency cutting arrangement of a kind of compact type movable, therefore the arrangement space of its hydraulic oil container is restricted, again because hydraulic working oil circulation is frequent, so hydraulic oil need arrange hydraulic oil cooling system in oil return system.The hydraulic circuit that the hydraulic system of current employing is formed by fuel tank, oil feed pump and main control valve etc., and hydraulic circuit is arranged radiator, be also parallel with main return oil pressure valve and bypass counterbalance valve; And the mode that cooling system adopts is arrange separately again the cooling fan driven by power source in addition, carry out cooling down by cooling fan to radiator blowing, cooling fan provides lasting, equal air quantity according to constant power to radiator always here.
Although existing excavator cooling system achieves excavator hydraulic oil thermolysis to a certain extent, also have the following disadvantages:
1, because oil return changes in flow rate is large, by the flow real-time change of radiator, the impact that cooling system is subject to oil return comparatively greatly, can affect the life-span of each component of cooling system;
2, excavator all worked in four seasons spring, summer, autumn and winter at present, the variation of ambient temperature in four seasons spring, summer, autumn and winter is larger, but the cooling fan due to above-mentioned cooling system is connected not environmentally variations in temperature and changing, therefore can there is larger difference in the heat-sinking capability of Various Seasonal cooling system, also there is larger difference in the loss of energy consumption.
Utility model content
The purpose of this utility model there are the problems referred to above for existing technology, propose one and set up temperature sensing feedback signal in original hydraulic circuit, the oil consumption that Synchronization Control cold drives, reaches the hydraulic oil cooling system that can independently regulate and control in the excavator according to circumstances regulating and controlling cooling air quantity.
The purpose of this utility model realizes by following technical proposal: the hydraulic oil cooling system that can independently regulate and control in a kind of excavator, comprise by hydraulic oil container, the oil return circuit that work oil feed pump and main control valve are connected to form, also comprise heat radiation oil circuit and cold energy gathering oil circuit, first described heat radiation oil circuit connects above-mentioned hydraulic oil container, then be connected in series cooling oil pump, return after being connected in series radiator again and be connected to hydraulic oil container, first described cold energy gathering oil circuit connects above-mentioned work oil feed pump, then serial connection cooling oil feed pump, again and connect cooling motor and proportional pressure control valve, described cooling motor drives and connects cooling fan, the air supply direction of described cooling fan is just to above-mentioned radiator, set temperature sensor in described hydraulic oil container, described temperature pick up is by signal of telecommunication connection control device, described controller electricly connects aforementioned proportion overflow valve.
The hydraulic oil cooling system that can independently regulate and control in this excavator in use, enters radiator after the hydraulic oil in hydraulic oil container exports from the delivery outlet of cooling oil pump, then passes back into hydraulic oil container from the delivery outlet output of radiator; When complete machine just starts, hydraulic fluid temperature is relatively low, the lower temperature of this Time Controller collecting temperature sensor, after being calculated by controller again, output current is to proportional pressure control valve, and proportional pressure control valve Received signal strength also reduces overflow opening pressure in proportion or opening pressure is reduced to zero; Thus hydraulic oil sequentially through work oil feed pump, cooling oil feed pump be supplied to cooling motor hydraulic oil reduce to corresponding proportion value, or completely not supply hydraulic fluid to cooling motor, thus the proportional reduction of the rotating speed realizing cooling motor or cooling motor quit work, and then the cooling air quantity realizing cooling fan output reduces or quits work, final cooling system heat-sinking capability lowers or stops heat radiation.
The hydraulic oil that the oil feed pump delivery outlet that now works exports through main control valve, then enters hydraulic oil container through return oil pressure valve, causes the hydraulic fluid temperature in hydraulic oil container to be rapidly heated at short notice; When hydraulic oil the temperature inside the box raises gradually, temperature pick up can pass to controller temperature signal in the moment, controller is through calculating to proportional pressure control valve input current, control ratio overflow valve increases overflow opening pressure, thus to the proportional increase of the fuel delivery of cooling motor, thus controlled cooling model motor rotary speed improves, drive cooling fan to export larger cooling air quantity, finally make system cools capability improving.
Export from cooling oil pump in above process and enter radiator, exporting from radiator the hydraulic oil entering hydraulic oil container is again that a regime flow is in circulation, therefore hydraulic fluid temperature can realize linear raised temperature or the linear control reducing temperature, hydraulic fluid temperature in whole excavator system is made to be easier to realize equilibrium state, and the impact making whole cooling system be subject to due to stability of flow is less, so the life-span of complete machine increase.
In the hydraulic oil cooling system that can independently regulate and control in above-mentioned excavator, first the oil-out of described hydraulic oil container connects cooling oil pump, then cooling oil pump connects work oil feed pump and main control valve in turn, connect return oil pressure valve by the oil return opening of main control valve, return after return oil pressure valve and be connected to hydraulic oil container.
In the hydraulic oil cooling system that can independently regulate and control in above-mentioned excavator, described work oil feed pump connects drive motors.
In the hydraulic oil cooling system that can independently regulate and control in above-mentioned excavator, described cooling motor and proportional pressure control valve also connect the end of rear formation cold energy gathering oil circuit, and the end of cold energy gathering oil circuit enters an oil spilling case.
In the hydraulic oil cooling system that can independently regulate and control in above-mentioned excavator, the oil circuit between described work oil feed pump and cooling oil feed pump diverges out overflow branch road, and the end of overflow branch road is connected an oil spilling case.
Compared with prior art, the hydraulic oil cooling system that can independently regulate and control in this excavator has following advantages:
1. this cooling system and main work system are independently, the not recirculating oil quantity variable effect of acceptor's work system, and cooling fluid force feed stability of flow, therefore cooling system impacts little by oil return, and then reduce fault rate, can improve again the working life of whole system;
2. the utility model can reduce the setting of bypass counterbalance valve and respective line, therefore reduces the energy consumption of this bypass circulation;
3. the utility model can be at different ambient temperatures, can regulate in real time according to the heat-sinking capability of temperature to cooling system of hydraulic oil, thus hydraulic fluid temperature is controlled, make hydraulic oil not influenced by ambient temperature in desirable stable at operating temperature work, reach effective utilization of the energy, and reduce the object of energy consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hydraulic oil cooling system that can independently regulate and control in this excavator.
In figure, 1, drive motors; 2, work oil feed pump; 3, oil feed pump is cooled; 4, cooling oil pump; 5, radiator; 6, cooling fan; 7, cooling motor; 8, proportional pressure control valve; 9, controller; 10, temperature pick up, 11, hydraulic oil container; 12, return oil pressure valve; 13 main control valves.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, the hydraulic oil cooling system that can independently regulate and control in this excavator comprises oil return circuit, also comprises heat radiation oil circuit and cold energy gathering oil circuit.
In oil return circuit, first cooling oil pump 4 is connected by the oil-out of hydraulic oil container 11, then cooling oil pump 4 connects work oil feed pump 2 and main control valve 13 in turn, connects return oil pressure valve 12 by the oil return opening of main control valve 13, returns and be connected to hydraulic oil container 11 after return oil pressure valve 12.
First heat radiation oil circuit connects hydraulic oil container 11, is then connected in series cooling oil pump 4, then be connected in series to return after radiator 5 and be connected to hydraulic oil container 11.
First cold energy gathering oil circuit connects work oil feed pump 2, then serial connection cooling oil feed pump 3, again and connect cooling motor 7 and proportional pressure control valve 8, cooling motor 7 is with proportional pressure control valve 8 and connect the end of rear formation cold energy gathering oil circuit, and the end of cold energy gathering oil circuit enters an oil spilling case.Cooling motor 7 drives and connects cooling fan 6, and the air supply direction of this cooling fan 6 is just to radiator 5.Set temperature sensor 10 in hydraulic oil container 11, this temperature pick up 10 is by signal of telecommunication connection control device 9, and controller 9 electricly connects proportional pressure control valve 8.
Oil circuit between work oil feed pump 2 and cooling oil feed pump 3 diverges out overflow branch road, and the end of overflow branch road is connected an oil spilling case.
Work oil feed pump 2 connects drive motors 1, namely starts building to make oil feed pump 2 by drive motors 1 providing source powered belt and runs.
The hydraulic oil cooling system that can independently regulate and control in this excavator in use, enters radiator 5 after the hydraulic oil in hydraulic oil container 11 exports from the delivery outlet of cooling oil pump 4, then passes back into hydraulic oil container 11 from the delivery outlet output of radiator 5; When complete machine just starts, hydraulic fluid temperature is relatively low, the lower temperature of this Time Controller 9 collecting temperature sensor 10, calculate rear output current to proportional pressure control valve 8 by controller 9 again, proportional pressure control valve 8 Received signal strength also reduces overflow opening pressure in proportion or opening pressure is reduced to zero; Thus hydraulic oil sequentially through work oil feed pump 2, cooling oil feed pump 3 be supplied to cooling motor 7 hydraulic oil reduce to corresponding proportion value, or completely not supply hydraulic fluid to cooling motor 7, thus the proportional reduction of the rotating speed realizing cooling motor 7 or cooling motor 7 quit work, and then the cooling air quantity realizing cooling fan 6 output reduces or quits work, final cooling system heat-sinking capability lowers or stops heat radiation.
The hydraulic oil that oil feed pump 2 delivery outlet that now works exports through main control valve 13, then enters hydraulic oil container 11 through return oil pressure valve 12, causes the hydraulic fluid temperature in hydraulic oil container 11 to be rapidly heated at short notice; When in hydraulic oil container 11, temperature raises gradually, temperature pick up 10 can pass to controller 9 temperature signal in the moment, controller 9 is through calculating to proportional pressure control valve 8 input current, control ratio overflow valve 8 increases overflow opening pressure, thus to the proportional increase of the fuel delivery of cooling motor 7, thus controlled cooling model motor 7 rotating speed improves, drive cooling fan 6 to export larger cooling air quantity, finally make system cools capability improving.
Export from cooling oil pump 4 in above process and enter radiator 5, exporting from radiator 5 hydraulic oil entering hydraulic oil container 11 is again that a regime flow is in circulation, therefore hydraulic fluid temperature can realize linear raised temperature or the linear control reducing temperature, hydraulic fluid temperature in whole excavator system is made to be easier to realize equilibrium state, and the impact making whole cooling system be subject to due to stability of flow is less, so the life-span of complete machine increase.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ drive motors 1 herein; Work oil feed pump 2; Cooling oil feed pump 3; Cooling oil pump 4; Radiator 5; Cooling fan 6; Cooling motor 7; Proportional pressure control valve 8; Controller 9; Temperature pick up 10, hydraulic oil container 11; Return oil pressure valve 12; Term such as main control valve 13 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (5)
1. the hydraulic oil cooling system that can independently regulate and control in an excavator, comprise by hydraulic oil container, the oil return circuit that work oil feed pump and main control valve are connected to form, it is characterized in that, also comprise heat radiation oil circuit and cold energy gathering oil circuit, first described heat radiation oil circuit connects above-mentioned hydraulic oil container, then be connected in series cooling oil pump, return after being connected in series radiator again and be connected to hydraulic oil container, first described cold energy gathering oil circuit connects above-mentioned work oil feed pump, then serial connection cooling oil feed pump, again and connect cooling motor and proportional pressure control valve, described cooling motor drives and connects cooling fan, the air supply direction of described cooling fan is just to above-mentioned radiator, set temperature sensor in described hydraulic oil container, described temperature pick up is by signal of telecommunication connection control device, described controller electricly connects aforementioned proportion overflow valve.
2. the hydraulic oil cooling system that can independently regulate and control in excavator according to claim 1, it is characterized in that, first the oil-out of described hydraulic oil container connects cooling oil pump, then cooling oil pump connects work oil feed pump and main control valve in turn, connect return oil pressure valve by the oil return opening of main control valve, return after return oil pressure valve and be connected to hydraulic oil container.
3. the hydraulic oil cooling system that can independently regulate and control in excavator according to claim 1 and 2, is characterized in that, described work oil feed pump connects drive motors.
4. the hydraulic oil cooling system that can independently regulate and control in excavator according to claim 1 and 2, is characterized in that, described cooling motor and proportional pressure control valve also connect the end of rear formation cold energy gathering oil circuit, and the end of cold energy gathering oil circuit enters an oil spilling case.
5. the hydraulic oil cooling system that can independently regulate and control in excavator according to claim 1 and 2, is characterized in that, the oil circuit between described work oil feed pump and cooling oil feed pump diverges out overflow branch road, and the end of overflow branch road is connected an oil spilling case.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591815.7U CN204151846U (en) | 2014-10-14 | 2014-10-14 | The hydraulic oil cooling system that can independently regulate and control in a kind of excavator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420591815.7U CN204151846U (en) | 2014-10-14 | 2014-10-14 | The hydraulic oil cooling system that can independently regulate and control in a kind of excavator |
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| CN204151846U true CN204151846U (en) | 2015-02-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893746A (en) * | 2017-12-05 | 2018-04-10 | 陕西昆仑机械装备制造有限责任公司 | Hydraulic natural gas compressor cooling system |
| CN108916163A (en) * | 2018-09-26 | 2018-11-30 | 浙江杭钻能源装备有限公司 | Oil tank cooling system and its cooling control method |
| CN109519523A (en) * | 2017-09-20 | 2019-03-26 | 弗兰德有限公司 | Transmission device with oil cooler |
| CN110397110A (en) * | 2019-07-29 | 2019-11-01 | 上海三一重机股份有限公司 | A kind of excavator hydraulic oil-returning system and its control method, excavator |
| CN113586559A (en) * | 2021-07-22 | 2021-11-02 | 三一重机有限公司 | Hydraulic oil cooling system and working machine |
-
2014
- 2014-10-14 CN CN201420591815.7U patent/CN204151846U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519523A (en) * | 2017-09-20 | 2019-03-26 | 弗兰德有限公司 | Transmission device with oil cooler |
| CN107893746A (en) * | 2017-12-05 | 2018-04-10 | 陕西昆仑机械装备制造有限责任公司 | Hydraulic natural gas compressor cooling system |
| CN108916163A (en) * | 2018-09-26 | 2018-11-30 | 浙江杭钻能源装备有限公司 | Oil tank cooling system and its cooling control method |
| CN108916163B (en) * | 2018-09-26 | 2023-08-22 | 浙江杭钻能源装备有限公司 | Oil tank cooling system and cooling control method thereof |
| CN110397110A (en) * | 2019-07-29 | 2019-11-01 | 上海三一重机股份有限公司 | A kind of excavator hydraulic oil-returning system and its control method, excavator |
| CN113586559A (en) * | 2021-07-22 | 2021-11-02 | 三一重机有限公司 | Hydraulic oil cooling system and working machine |
| CN113586559B (en) * | 2021-07-22 | 2024-01-23 | 三一重机有限公司 | Hydraulic oil cooling system and working machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266500 No. 75 east the Yellow River Road, Qingdao economic and Technological Development Zone, Shandong Patentee after: QINGDAO LOVOL ENGINEERING MACHINERY Co.,Ltd. Address before: 266500 No. 75 east the Yellow River Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: QINGDAO LOVOL EXCAVATOR Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee after: LOVOL Engineering Machinery Group Co.,Ltd. Address before: 266500 No. 75 east the Yellow River Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: QINGDAO LOVOL ENGINEERING MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee after: Lovol Heavy Industry Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee before: LOVOL Engineering Machinery Group Co.,Ltd. |