KR20100062552A - Assistance oil cooling system of having water tank of construction equipment - Google Patents
Assistance oil cooling system of having water tank of construction equipment Download PDFInfo
- Publication number
- KR20100062552A KR20100062552A KR1020080121245A KR20080121245A KR20100062552A KR 20100062552 A KR20100062552 A KR 20100062552A KR 1020080121245 A KR1020080121245 A KR 1020080121245A KR 20080121245 A KR20080121245 A KR 20080121245A KR 20100062552 A KR20100062552 A KR 20100062552A
- Authority
- KR
- South Korea
- Prior art keywords
- hydraulic
- oil
- tank
- heat exchange
- water tank
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/002—Cooling
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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
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/002—Cooling
- F01M2005/004—Oil-cooled engines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Component Parts Of Construction Machinery (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The disclosure discloses that hydraulic oil returned from the hydraulic motor driving the cooling fan for the main oil cooler to the hydraulic tank, or the hydraulic oil returned from the actuator to the hydraulic tank passes through the water tank, so that the hydraulic oil is caused by the mutual heat exchange of water and the hydraulic oil. To allow cooling,
An auxiliary oil cooling system using a water tank for construction equipment according to an embodiment of the present invention,
In the auxiliary oil cooling system for construction equipment,
A main oil cooler for cooling the hydraulic oil returned from the actuator to the hydraulic tank,
A hydraulic motor for rotating the cooling fan for the oil cooler to cool the working oil due to the mutual heat exchange between the outside air and the working oil,
A hydraulic pump for supplying hydraulic oil from the hydraulic tank to the hydraulic motor,
And a water tank in which a heat exchange pipe through which the hydraulic oil passes is cooled to cool the hydraulic oil due to mutual heat exchange between the hydraulic oil returned from the hydraulic motor to the hydraulic tank.
Description
The present invention is to cool the hydraulic fluid without using a separate auxiliary cooler using a hydraulic motor when cooling the hydraulic fluid returned to the hydraulic tank from various control valves or hydraulic cylinders (hereinafter referred to as "actuator"). Auxiliary oil cooling system using water tank for construction equipment.
More specifically, the hydraulic oil returned from the hydraulic motor driving the cooling fan for the main oil cooler to the hydraulic tank, or the hydraulic oil returned from the actuator to the hydraulic tank passes through the water tank, the hydraulic oil due to the mutual heat exchange between the water and the hydraulic oil A secondary oil cooling system using a water tank for construction equipment to allow the water to be cooled.
In general, an air-cooled cooling device installed in construction equipment such as an excavator cools the working oil and the cooling water of the engine used to drive a work device and a traveling device to a predetermined temperature or less due to mutual heat exchange with the forced air. Use an oil cooler and radiator.
As shown in Figure 1, the auxiliary oil cooling system for construction equipment according to the prior art,
A main oil cooler (2) for cooling the hydraulic oil returned from the actuator (hydraulic cylinder, etc.) to the hydraulic tank (1) through the conduit (11),
A hydraulic motor (4) for rotating the cooling fan (3) for the oil cooler to cool the working oil due to mutual heat exchange between the outside air and the working oil,
A
And an
In the drawings,
In the auxiliary oil cooling system of the prior art, since construction equipment such as excavators mainly work in a poor working environment, a separate auxiliary to improve the cooling efficiency of the oil cooler in consideration of the limited cooling of the main oil cooler (2). The
That is, by forcedly blowing external air to the
At this time, when the temperature around the construction equipment is a high temperature (especially when working in a direct sunlight environment in the summer), the side effect of raising the temperature of the working oil in the air-cooled cooling system for forced air blowing by rotating the cooling fan This causes a problem that the cooling efficiency is lowered.
Embodiment of the present invention, the operating oil returned to the hydraulic tank from the hydraulic motor for driving the cooling fan for the main oil cooler, or the operating oil returned to the hydraulic tank from the actuator to pass through the water tank, the high temperature around the construction equipment It is also related to an auxiliary oil cooling system using water tanks for construction equipment to improve the cooling efficiency of oil coolers.
Embodiments of the present invention relate to an auxiliary oil cooling system using a water tank for construction equipment, in which a water tank for cooling hydraulic oil returned to the hydraulic tank is mounted behind the upper frame of the construction equipment to increase lifting capability. .
An auxiliary oil cooling system using a water tank for construction equipment according to an embodiment of the present invention,
In the auxiliary oil cooling system for construction equipment,
A main oil cooler for cooling the hydraulic oil returned from the actuator to the hydraulic tank,
A hydraulic motor for rotating the cooling fan for the oil cooler to cool the working oil due to the mutual heat exchange between the outside air and the working oil,
A hydraulic pump for supplying hydraulic oil from the hydraulic tank to the hydraulic motor,
And a water tank in which a heat exchange pipe through which the hydraulic oil passes is cooled to cool the hydraulic oil due to mutual heat exchange between the hydraulic oil returned from the hydraulic motor to the hydraulic tank.
An auxiliary oil cooling system using a water tank for construction equipment according to another embodiment of the present invention,
In the auxiliary oil cooling system for construction equipment,
A main oil cooler for cooling the hydraulic oil returned from the actuator to the hydraulic tank,
A hydraulic motor for rotating the cooling fan for the oil cooler to cool the working oil due to the mutual heat exchange between the outside air and the working oil,
A hydraulic pump for supplying hydraulic oil from the hydraulic tank to the hydraulic motor,
A water tank in which a heat exchange pipe through which the working oil passes is cooled to cool the working oil due to mutual heat exchange between the hydraulic oil returned from the hydraulic motor to the hydraulic tank, and
And a return flow path for cooling the hydraulic oil returned from the actuator to the hydraulic tank via the heat exchange pipe of the water tank, and then supplying the hydraulic fluid to the main oil cooler.
According to a preferred embodiment, the aforementioned water tank is mounted at the rear of the upper frame of the construction equipment.
As described above, the auxiliary oil cooling system using the water tank for construction equipment according to an embodiment of the present invention has the following advantages.
Since the operating oil returned to the hydraulic tank from the hydraulic motor driving the cooling fan for the main oil cooler or the operating oil returned to the hydraulic tank from the actuator passes through the water tank, the temperature decreases, so even when the temperature around the construction equipment is high, the oil cooler Can improve the cooling efficiency.
In addition, the water tank for cooling the hydraulic oil returned to the hydraulic tank can be mounted to the rear of the upper frame of the construction equipment to increase the workability and safety during excavation work.
DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which is intended to explain in detail enough to enable those skilled in the art to easily practice the present invention. This does not mean that the technical spirit and scope of the present invention is limited.
As shown in Figure 2 and 3, the auxiliary oil cooling system using a water tank for construction equipment according to an embodiment of the present invention,
In auxiliary oil cooling system for construction equipment (excavator),
A main oil cooler (2) for cooling the hydraulic oil returned from the actuator (hydraulic cylinder, etc.) to the hydraulic tank (1) through the conduit (11),
A hydraulic motor (4) for rotating the cooling fan (3) for the oil cooler to cool the working oil due to mutual heat exchange between the outside air and the working oil,
A
It includes a water tank (9) in which a heat exchange pipe (8) through which the hydraulic fluid passes to cool the hydraulic fluid due to mutual heat exchange between the hydraulic oil (4) and the hydraulic oil returned to the hydraulic tank (1). do.
The
At this time, the configuration except for the
Hereinafter, with reference to the accompanying drawings an example of the use of the auxiliary oil cooling system using a water tank for construction equipment according to an embodiment of the present invention will be described in detail.
As shown in Fig. 2 and 3, the hydraulic oil returned from the hydraulic cylinder for driving a working device (boom, arm, etc.) such as an excavator, or a control valve for controlling the hydraulic oil supplied to the hydraulic cylinder, the
The operating oil whose temperature is returned to the above-mentioned
At this time, as the
Therefore, as in the summer, working in a poor working environment exposed to direct sunlight, even when the temperature around the construction equipment is a high temperature, by the mutual heat exchange of the hydraulic oil and water passing through the
On the other hand, as the above-described
As shown in Figure 4, the auxiliary oil cooling system using a water tank for construction equipment according to another embodiment of the present invention,
In auxiliary oil cooling system for construction equipment (excavator),
A main oil cooler (2) for cooling the hydraulic oil returned from the actuator (hydraulic cylinder, etc.) to the hydraulic tank (1),
A hydraulic motor (4) for rotating the cooling fan (3) for the oil cooler to cool the working oil due to the mutual heat exchange between the outside air and the working oil,
A
A
A
At this time, the hydraulic oil returned from the actuator to the hydraulic tank (1) is passed through the heat exchange conduit (8) of the water tank (9) to cool the primary, and the hydraulic fluid is cooled secondly via the main oil cooler (2). The configuration except for the
Accordingly, the hydraulic oil whose temperature is returned to the
The hydraulic oil which has passed through the
As described above, the operating oil whose temperature is returned from the actuator to the
As described above, the auxiliary oil cooling system using the water tank for construction equipment according to an embodiment of the present invention, the hydraulic oil returned from the actuator to the hydraulic tank passes through the water tank and the main oil cooler to increase the temperature around the construction equipment Even at high levels, the cooling efficiency of the oil cooler can be improved and the water tank can be mounted behind the upper frame of the construction equipment to increase the lifting capacity.
1 is a schematic hydraulic circuit diagram of an auxiliary oil cooling system for construction equipment according to the prior art;
2 is a schematic hydraulic circuit diagram of an auxiliary oil cooling system using a water tank for construction equipment according to an embodiment of the present invention;
3 is a state of use of the auxiliary oil cooling system using a water tank for construction equipment according to an embodiment of the present invention,
4 is a hydraulic circuit diagram of an auxiliary oil cooling system using a water tank for construction equipment according to another embodiment of the present invention.
* Explanation of symbols used in the main part of the drawing
One; Hydraulic tank
2; Main oil cooler
3; Cooling fan
4; Hydraulic motor
5; Hydraulic pump
6; Secondary cooler
7; Proportional Control Relief Valve
8; Heat exchanger
9; Water tank
10; Upper frame
11; pipeline
12; Return euro
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080121245A KR20100062552A (en) | 2008-12-02 | 2008-12-02 | Assistance oil cooling system of having water tank of construction equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080121245A KR20100062552A (en) | 2008-12-02 | 2008-12-02 | Assistance oil cooling system of having water tank of construction equipment |
Publications (1)
Publication Number | Publication Date |
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KR20100062552A true KR20100062552A (en) | 2010-06-10 |
Family
ID=42362798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020080121245A KR20100062552A (en) | 2008-12-02 | 2008-12-02 | Assistance oil cooling system of having water tank of construction equipment |
Country Status (1)
Country | Link |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103541389A (en) * | 2013-09-24 | 2014-01-29 | 徐州徐工特种工程机械有限公司 | Adjustable independent heat dissipation device of loader-digger |
CN105971048A (en) * | 2016-06-28 | 2016-09-28 | 徐工集团工程机械股份有限公司科技分公司 | Wheel loader radiator arrangement structure |
KR102355348B1 (en) | 2021-05-26 | 2022-01-24 | 황일규 | A Skid steer loader equipped with stable water supply structure |
-
2008
- 2008-12-02 KR KR1020080121245A patent/KR20100062552A/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103541389A (en) * | 2013-09-24 | 2014-01-29 | 徐州徐工特种工程机械有限公司 | Adjustable independent heat dissipation device of loader-digger |
CN105971048A (en) * | 2016-06-28 | 2016-09-28 | 徐工集团工程机械股份有限公司科技分公司 | Wheel loader radiator arrangement structure |
KR102355348B1 (en) | 2021-05-26 | 2022-01-24 | 황일규 | A Skid steer loader equipped with stable water supply structure |
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