CN102995699B - Excavator and hydraulic oil heat dissipation power adjusting device thereof - Google Patents
Excavator and hydraulic oil heat dissipation power adjusting device thereof Download PDFInfo
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- CN102995699B CN102995699B CN201210538688.XA CN201210538688A CN102995699B CN 102995699 B CN102995699 B CN 102995699B CN 201210538688 A CN201210538688 A CN 201210538688A CN 102995699 B CN102995699 B CN 102995699B
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Abstract
The invention discloses a kind of excavator and hydraulic oil heat dissipation power adjusting device thereof.Wherein, hydraulic oil heat dissipation power adjusting device comprises the first way to cycle oil, the second way to cycle oil and temperature control modules; First way to cycle oil and the second way to cycle oil are connected between the main control valve of excavator and hydraulic oil container, and the hydraulic oil after work flows out from main control valve, flow back to hydraulic oil container through the first way to cycle oil and the second way to cycle oil; First way to cycle oil is provided with flow control valve, and the second way to cycle oil is connected with radiator; Further, the opening pressure of flow control valve is adjustable; Temperature control modules for measuring the temperature of the hydraulic oil after the work of flowing out from main control valve, and controls through the hydraulic fluid flow rate of flow control valve and radiator according to temperature convection.Hydraulic oil heat dissipation power adjusting device provided by the invention can change environmentally, the temperature of regulator solution force feed timely and effectively.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of excavator and hydraulic oil heat dissipation power adjusting device thereof.
Background technology
Along with the scientific and technological productive forces day by day improved, hydraulic crawler excavator is widely used in the numerous areas of the development of the national economy, and as road construction, exploit mineral resources, infrastructure construction, excavator has become indispensable key player.
Because the field be employed is more, excavator spreads all over the world each corner, thus cause operating mode difference huge, there is the desert region of high temperature drying, also have the extremely frigid zones of less than-30 DEG C, region or the temperature difference up to 70 DEG C caused round the clock make hydraulic crawler excavator must face the challenge of environmental suitability when designing or apply.
In a kind of cooling system that current hydraulic crawler excavator uses, in cold, hydraulic oil radiator, cooling water radiator heat transmission cold wind all rely on engine driven fans.Engine coolant can rely on thermostat to make engine water temperature keep a rational temperature, and in hydraulic oil cooling system, needleless is to the adjusting device of environmental change.
Because hydraulic system is without adjusting device, must consider the balance to environment temperature when designing excavator, if the environment temperature that design adapts to is too high, then digging machine is when low temp area works, and digging machine heat engine is slow and balanced hydraulic oil temperature is low, causes digging machine energy consumption to increase; If the environment temperature that design adapts to is too low, then digging machine is when high temperature district work, and hydraulic oil temperature exceeds the scope of application, causes damage and lets out increase in hydraulic pressure, cause the efficiency of digging machine to decline to rubber components in hydraulic system, and fault rate rises.
Summary of the invention
The object of the invention is to propose a kind of excavator and hydraulic oil heat dissipation power adjusting device thereof, with change environmentally, the temperature of regulator solution force feed timely and effectively.
First aspect, the invention discloses a kind of hydraulic oil heat dissipation power adjusting device, for excavator, comprises the first way to cycle oil, the second way to cycle oil and temperature control modules; Wherein, between the main control valve that described first way to cycle oil and described second way to cycle oil are connected to described excavator and hydraulic oil container, hydraulic oil after work flows out from described main control valve, flows back to described hydraulic oil container through described first way to cycle oil and described second way to cycle oil; Further, described first way to cycle oil is provided with flow control valve, and described second way to cycle oil is connected with radiator; Further, the opening pressure of described flow control valve is adjustable; And described temperature control modules for measuring the temperature of the hydraulic oil after the work of flowing out from described main control valve, and controls according to the hydraulic fluid flow rate of described temperature convection through described flow control valve and described radiator.
Further, in above-mentioned hydraulic oil heat dissipation power adjusting device, described flow control valve is bypass valve.
Further, in above-mentioned hydraulic oil heat dissipation power adjusting device, be provided with a choke block in described bypass valve, the aperture of described choke block is adjustable.
Further, in above-mentioned hydraulic oil heat dissipation power adjusting device, described second time logical oil circuit is also provided with counterbalance valve, and the oil-in of described counterbalance valve exports with the oil circuit of described radiator and is connected.
Further, in above-mentioned hydraulic oil heat dissipation power adjusting device, described temperature control modules is arranged at the entrance with described bypass valve.
In the present invention, the temperature of the high-temperature liquid force feed after the work of flowing out through main control valve is obtained by temperature control modules, and carry out controlling (temperature of hydraulic oil is mated with the opening pressure of flow control valve) according to the opening pressure of the temperature convection control valve of hydraulic oil, and then, can regulate and flow back to hydraulic oil container flow by the first way to cycle oil, and total recirculating oil quantity is certain, therefore the hydraulic pressure oil mass being flowed back to hydraulic oil container by the second way to cycle oil is also changed thereupon; On the other hand, owing to being provided with radiator in the second way to cycle oil, that is, changed by the hydraulic pressure oil mass of this radiator, and then the heat radiation power of radiator changes.In this way, hydraulic fluid temperature is made to remain on a rational working range.
Second aspect, the invention also discloses a kind of excavator, is provided with the hydraulic oil heat dissipation power adjusting device described in above-mentioned any one.
Because excavator includes above-mentioned hydraulic oil heat dissipation power adjusting device, therefore, the excavator with this hydraulic oil heat dissipation power adjusting device must also have above-mentioned technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of hydraulic oil heat dissipation power adjusting device preferred embodiment of the present invention;
Fig. 2 is in hydraulic oil heat dissipation power adjusting device preferred embodiment of the present invention, the structural representation of bypass valve.
Description of reference numerals
1 hydraulic oil container
2 bypass valve
3 main control valves
4 radiators
5 counterbalance valves
6 temperature control modules
7 choke blocks
8 hydraulic oil channels
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below, composition graphs 1 to Fig. 2, is described in detail the preferred embodiment of hydraulic oil heat dissipation power adjusting device of the present invention.
With reference to Fig. 1, the present embodiment hydraulic oil heat dissipation power adjusting device is used for excavator, comprises the first way to cycle oil, the second way to cycle oil and temperature control modules 6; Wherein, the first way to cycle oil and the second way to cycle oil are connected between the main control valve 3 of excavator and hydraulic oil container 1, and the hydraulic oil after work flows out from main control valve 3, flow back to hydraulic oil container 1 through the first way to cycle oil and the second way to cycle oil; Further, the first way to cycle oil is provided with flow control valve, and the second way to cycle oil is connected with radiator 4; Further, the opening pressure of flow control valve is adjustable; Temperature control modules 6 for measuring the temperature of hydraulic oil after the work of flowing out from main control valve 3, and controls through the hydraulic fluid flow rate of flow control valve and radiator 4 according to temperature convection.
In this embodiment, flow control valve can be bypass valve 2.Preferably, in order to make the opening pressure of bypass valve 2 adjustable, be provided with a choke block 7 in bypass valve 2, the aperture of described choke block 7 is adjustable.With reference to Fig. 2, the aperture being arranged on the choke block 7 of hydraulic oil channel 8 by adjustment is realized, and choke block aperture is larger, and pressure is less, otherwise pressure is larger.
In one embodiment, the second way to cycle oil is also provided with counterbalance valve 5, and the oil-in of described counterbalance valve 5 exports with the oil circuit of described radiator 4 and is connected.
The operating principle of the present embodiment is: the high-temperature liquid force feed after work, and through main control valve 3 oil return, a part of hydraulic oil flows through radiator 4, hydraulic oil container 1 got back to by counterbalance valve 5; A part of hydraulic oil directly flows back to hydraulic oil container 1 through bypass valve 2 in addition.Two parts hydraulic oil ratio relies on variable pressure bypass valve 2 to regulate.Gather hydraulic fluid temperature according to temperature pick up 6, when hydraulic fluid temperature is higher, the pressure that bypass valve 2 controls improves, and the hydraulic pressure oil mass flowing through hydraulic oil radiator 4 is increased, thus increases the heat radiation power of hydraulic oil radiator, reduce hydraulic oil temperature; When hydraulic oil temperature is on the low side, the pressure that bypass valve 2 controls reduces, and the hydraulic pressure oil mass flowing through hydraulic oil radiator 4 is reduced, thus reduces the heat radiation power of hydraulic oil radiator, hydraulic oil temperature is raised.
It should be noted that, in the present embodiment, select be the bypass valve of adjustable-pressure as flow control valve, but bypass valve just realizes the adjustable a kind of implementation of flow, other can realize all being fine according to the valve of temperature signal adjust flux, and the present invention does not limit at this.
In addition, temperature control modules 6 can be arranged in place, as long as can the temperature of high-temperature liquid force feed after the work of detection place accurately.The present invention does not limit.Preferably, the entrance be arranged at bypass valve 2 can be arranged on.
Relative to prior art, the present embodiment has following advantage:
In the present embodiment hydraulic oil heat dissipation power adjusting device, the temperature of the high-temperature liquid force feed after the work of flowing out through main control valve is obtained by temperature control modules, and the opening pressure of the temperature and flow control valve of carrying out hydraulic control oil according to the opening pressure of temperature convection control valve of hydraulic oil is mated, and then, can regulate and flow back to hydraulic oil container flow by the first way to cycle oil, and total recirculating oil quantity is certain, therefore the hydraulic pressure oil mass being flowed back to hydraulic oil container by the second way to cycle oil is also changed thereupon; On the other hand, owing to being provided with radiator in the second way to cycle oil, that is, changed by the hydraulic pressure oil mass of this radiator, and then the heat radiation power of radiator changes.In this way, hydraulic fluid temperature is made to remain on a rational working range.
Briefly, the present invention, can the temperature of hydraulic control oil neatly by the flow control valve of pressure-adjustable, makes hydraulic oil temperature remain on a rational scope of application, thus reaches energy-conservation effect.Further, the present embodiment structure is simple, and element is few, easily realizes.
On the other hand, the invention also discloses a kind of excavator, this excavator comprises above-mentioned hydraulic oil heat dissipation power adjusting device.
Because excavator includes above-mentioned hydraulic oil heat dissipation power adjusting device, therefore, the excavator with this hydraulic oil heat dissipation power adjusting device must also have above-mentioned technique effect.Do not repeat them here.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a hydraulic oil heat dissipation power adjusting device, for excavator, is characterized in that, comprising:
First way to cycle oil, the second way to cycle oil and temperature control modules (6); Wherein
Described first way to cycle oil and described second way to cycle oil are connected between the main control valve (3) of described excavator and hydraulic oil container (1), hydraulic oil after work flows out from described main control valve (3), flows back to described hydraulic oil container (1) through described first way to cycle oil and described second way to cycle oil; And
Described first way to cycle oil is provided with flow control valve, and described second way to cycle oil is connected with radiator (4); Further, the opening pressure of described flow control valve is adjustable, and described flow control valve is bypass valve (2), is provided with a choke block (7) in described bypass valve (2), and the aperture of described choke block (7) is adjustable; And
Described temperature control modules (6) for the temperature of the hydraulic oil after the work of measurement outflow from described main control valve (3), and controls according to the hydraulic fluid flow rate of described temperature convection through described flow control valve and described radiator (4);
Described second way to cycle oil is also provided with counterbalance valve (5), and the oil-in of described counterbalance valve (5) exports with the oil circuit of described radiator (4) and is connected.
2. hydraulic oil heat dissipation power adjusting device according to claim 1, is characterized in that,
Described temperature control modules (6) is arranged at the entrance of described bypass valve (2).
3. an excavator, is characterized in that, is provided with hydraulic oil heat dissipation power adjusting device as claimed in claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538688.XA CN102995699B (en) | 2012-12-13 | 2012-12-13 | Excavator and hydraulic oil heat dissipation power adjusting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538688.XA CN102995699B (en) | 2012-12-13 | 2012-12-13 | Excavator and hydraulic oil heat dissipation power adjusting device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102995699A CN102995699A (en) | 2013-03-27 |
| CN102995699B true CN102995699B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210538688.XA Expired - Fee Related CN102995699B (en) | 2012-12-13 | 2012-12-13 | Excavator and hydraulic oil heat dissipation power adjusting device thereof |
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| CN (1) | CN102995699B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520377A (en) * | 2020-05-19 | 2020-08-11 | 上海三一重机股份有限公司 | Hydraulic heat dissipation control system, method, device, equipment and engineering machinery |
| CN113301781B (en) * | 2021-05-26 | 2023-04-25 | 三一重机有限公司 | Heat dissipation device, control method thereof, crushing equipment and working machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974926A (en) * | 2010-09-29 | 2011-02-16 | 三一重机有限公司 | Oil returning system capable of automatically controlling hydraulic oil temperature used for excavator |
| CN201874926U (en) * | 2010-11-11 | 2011-06-22 | 西南铝业（集团）有限责任公司 | Hydraulic cooling system |
| CN202273261U (en) * | 2011-10-01 | 2012-06-13 | 徐州徐工挖掘机械有限公司 | Independent heat dissipation control system of novel hydraulic excavator |
| CN102720242A (en) * | 2012-06-14 | 2012-10-10 | 上海三一重机有限公司 | Hydraulic oil temperature control device and control method and excavator comprising same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002070811A (en) * | 2000-08-25 | 2002-03-08 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Working oil cooling system for construction machine |
| JP2005155698A (en) * | 2003-11-21 | 2005-06-16 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Hydraulic circuit of hydraulic work machine |
-
2012
- 2012-12-13 CN CN201210538688.XA patent/CN102995699B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974926A (en) * | 2010-09-29 | 2011-02-16 | 三一重机有限公司 | Oil returning system capable of automatically controlling hydraulic oil temperature used for excavator |
| CN201874926U (en) * | 2010-11-11 | 2011-06-22 | 西南铝业（集团）有限责任公司 | Hydraulic cooling system |
| CN202273261U (en) * | 2011-10-01 | 2012-06-13 | 徐州徐工挖掘机械有限公司 | Independent heat dissipation control system of novel hydraulic excavator |
| CN102720242A (en) * | 2012-06-14 | 2012-10-10 | 上海三一重机有限公司 | Hydraulic oil temperature control device and control method and excavator comprising same |
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| Publication number | Publication date |
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| CN102995699A (en) | 2013-03-27 |
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Granted publication date: 20160120 Termination date: 20161213 |