CN112824661A - Hydraulic cooling system of hydraulic excavator - Google Patents
Hydraulic cooling system of hydraulic excavator Download PDFInfo
- Publication number
- CN112824661A CN112824661A CN201911138378.7A CN201911138378A CN112824661A CN 112824661 A CN112824661 A CN 112824661A CN 201911138378 A CN201911138378 A CN 201911138378A CN 112824661 A CN112824661 A CN 112824661A
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- CN
- China
- Prior art keywords
- hydraulic
- temperature
- excavator
- microprocessor
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/026—Thermostatic control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0493—Controlling the air charge temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
- F16H41/30—Details relating to venting, lubrication, cooling, circulation of the cooling medium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Component Parts Of Construction Machinery (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention provides a hydraulic cooling system of a hydraulic excavator, which comprises a sensor module, a microprocessor, a display and a hydraulic cooling device, wherein the temperature sensor module comprises a plurality of temperature sensors arranged on each part of the excavator, the microprocessor is connected with each temperature sensor, the display and the hydraulic cooling device, the hydraulic cooling device comprises a cooling fan, a hydraulic driving motor and a variable hydraulic pump, the hydraulic driving motor is connected with the variable hydraulic pump and the cooling fan, the temperature sensor module acquires the temperature of each part and transmits the temperature to the microprocessor, the microprocessor compares the highest temperature with a preset temperature threshold, and when the highest temperature exceeds the temperature threshold, the variable hydraulic pump is controlled to adjust the flow rate, the rotating speed of the hydraulic driving motor is adjusted, and the heat of the excavator is radiated. The invention has the beneficial effects that: the stepless speed regulation control of the cooling fan is realized, the efficiency of the excavator is optimized, the cooling performance of the excavator is improved, and the stepless speed regulation control system has the advantages of reducing noise, saving energy and reducing emission.
Description
Technical Field
The invention relates to the technical field of excavating equipment, in particular to a hydraulic cooling system of a hydraulic excavator.
Background
The hydraulic excavator is one of the most important engineering machines in engineering construction, and is widely applied to the engineering fields of construction, water conservancy, electric power, roads, mines, ports, national defense and the like. During the use process, the engine, the hydraulic working system, the torque-variable speed-regulating system, the supercharging system and the like of the hydraulic excavator can generate a large amount of heat, and a cooling system or a thermal system device is required to be used for ensuring the normal operation of system devices.
In the traditional cooling system, as the rotating speed of a cooling fan is slow, the cooling effect is poor, and overheating is often caused; when the idling is started and the ambient temperature is low, the overcooling can be caused. Since the regulation function of the cooling system is poor, it cannot be guaranteed that the system always operates at the optimum operating temperature, and in addition, when the engine speed is high, the fan speed is also high, which causes problems such as excessive noise caused by the fan, and the like, and thus, there is a need for improvement.
Disclosure of Invention
In view of this, embodiments of the present invention provide a hydraulic cooling system of a hydraulic excavator.
The embodiment of the invention provides a hydraulic cooling system of a hydraulic excavator, which comprises a sensor module, a microprocessor, a display and a hydraulic cooling device, wherein the temperature sensor module comprises a plurality of temperature sensors, each temperature sensor is respectively arranged on each component of the excavator, the input end of the microprocessor is connected with each temperature sensor, the output end of the microprocessor is respectively connected with the display and the hydraulic cooling device, the hydraulic cooling device comprises a cooling fan, a hydraulic driving motor and a variable hydraulic pump, the input end of the hydraulic driving motor is connected with the variable hydraulic pump, the output end of the hydraulic driving motor is connected with the cooling fan, the temperature sensor module collects the temperature of each component of the excavator and transmits the temperature data to the microprocessor, the microprocessor obtains the highest temperature through comparison, the display displays the highest temperature, and the microprocessor compares the highest temperature with a preset temperature threshold, controls the variable hydraulic pump to adjust the flow rate and adjusts the rotating speed of the hydraulic drive motor when the highest temperature exceeds the temperature threshold, and dissipates heat of the excavator.
Further, a comparison module is arranged on the microprocessor, the variable displacement hydraulic pump is provided with a valve controller, the comparison module is provided with a temperature adjusting range of the variable displacement hydraulic pump, the comparison module compares the highest temperature with the temperature adjusting range of the variable displacement hydraulic pump, and the valve controller controls the size of a valve port of the displacement adjusting proportional valve according to the comparison result so as to control the flow rate of the variable displacement hydraulic pump.
Further, the temperature sensors are respectively arranged on an engine, an intercooler, a hydraulic drive system and a torque converter of the excavator.
Further, a temperature sensor on the engine is provided on the engine body or on a coolant circulation line or on a radiator of the engine.
Further, a temperature sensor on the intercooler is arranged on the intercooler body or an air inlet pipeline of the engine.
Furthermore, a temperature sensor on the hydraulic driving system is fixedly arranged on a hydraulic oil tank, a hydraulic pipeline or a radiator of the hydraulic oil tank.
Furthermore, a temperature sensor on the torque converter is fixedly arranged on the torque converter body or a torque converter cooling oil pipeline or a torque converter radiator.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: according to the hydraulic cooling system of the hydraulic excavator, the adjustment amplitude of the cooling fan is judged by collecting the problems of the internal components of the excavator, the stepless speed regulation control of the cooling fan is realized, the efficiency of the excavator is optimized, the cooling performance of the excavator is improved, the energy of the excavator is saved, and the hydraulic cooling system has the advantages of reducing noise, saving energy and reducing emission.
Drawings
Fig. 1 is a schematic view of a hydraulic cooling system of a hydraulic excavator according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a hydraulic cooling system of a hydraulic excavator, including a sensor module 1, a microprocessor 2, a display 3 and a hydraulic cooling device.
The temperature sensor module 1 includes a plurality of temperature sensors 4, and each of the temperature sensors 4 is provided to each component of the excavator. Specifically, the temperature sensors 4 are respectively arranged on an engine, an intercooler, a hydraulic drive system and a torque converter of the excavator. The temperature sensors 4 are respectively arranged on an engine, an intercooler, a hydraulic driving system and a torque converter of the excavator. And the temperature sensor 4 on the intercooler is arranged on the intercooler body or an air inlet pipeline of the engine. And the temperature sensor 4 on the torque converter is fixedly arranged on the torque converter body or a torque converter cooling oil pipeline or a torque converter radiator.
The input end of the microprocessor 2 is connected with each temperature sensor 4, the output end of the microprocessor is respectively connected with the display 3 and the hydraulic cooling device, the hydraulic cooling device comprises a cooling fan 6, a hydraulic driving motor 7 and a variable hydraulic pump 5, the input end of the pressure driving motor is connected with the variable hydraulic pump 5, the output end of the pressure driving motor is connected with the cooling fan 6, the temperature sensor module 1 collects the temperature of each component of the excavator and transmits the temperature data to the microprocessor 2, the microprocessor 2 obtains the highest temperature through comparison, the display 3 displays the highest temperature, the microprocessor 2 compares the highest temperature with a preset temperature threshold, when the highest temperature exceeds the temperature threshold, the variable hydraulic pump 5 is controlled to adjust the flow rate, the rotating speed of the hydraulic driving motor 7 is adjusted, and therefore the rotating speed of the cooling fan 6 is adjusted, and radiating the heat of the excavator.
The microprocessor 2 may further perform proportional adjustment on the rotation speed of the cooling fan 6, specifically, the microprocessor 2 is provided with a comparison module, the variable displacement hydraulic pump 5 is provided with a valve controller, the comparison module is provided with a temperature adjustment range of the variable displacement hydraulic pump 5, the comparison module compares the highest temperature with the temperature adjustment range of the variable displacement hydraulic pump 5, and the valve controller controls the size of a valve port of the displacement adjustment proportional valve according to a comparison result, so as to control the flow rate of the variable displacement hydraulic pump 5.
According to the hydraulic cooling system of the hydraulic excavator, the adjustment amplitude of the cooling fan 6 is judged by collecting the problems of the internal components of the excavator, stepless speed regulation control of the cooling fan 6 is realized, the efficiency of the excavator is optimized, the cooling performance of the excavator is improved, the energy of the excavator is saved, and the hydraulic cooling system has the advantages of reducing noise, saving energy and reducing emission.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a hydraulic pressure excavator's hydraulic cooling system which characterized in that: the temperature control system comprises a sensor module, a microprocessor, a display and a hydraulic cooling device, wherein the temperature sensor module comprises a plurality of temperature sensors, each temperature sensor is respectively arranged on each component of the excavator, the input end of the microprocessor is connected with each temperature sensor, the output end of the microprocessor is respectively connected with the display and the hydraulic cooling device, the hydraulic cooling device comprises a cooling fan, a hydraulic driving motor and a variable hydraulic pump, the input end of the hydraulic driving motor is connected with the variable hydraulic pump, the output end of the hydraulic driving motor is connected with the cooling fan, the temperature sensor module collects the temperature of each component of the excavator and transmits the temperature data to the microprocessor, the microprocessor obtains the highest temperature through comparison, the display displays the highest temperature, and the microprocessor compares the highest temperature with a preset temperature threshold, and when the highest temperature exceeds a temperature threshold, controlling the variable hydraulic pump to adjust the flow rate, adjusting the rotating speed of the hydraulic drive motor, and radiating heat for the excavator.
2. The hydraulic cooling system of a hydraulic excavator according to claim 1, wherein: the microprocessor is provided with a comparison module, the variable displacement hydraulic pump is provided with a valve controller, the comparison module is provided with a temperature adjusting range of the variable displacement hydraulic pump, the comparison module compares the highest temperature with the temperature adjusting range of the variable displacement hydraulic pump, and the valve controller controls the size of a valve port of the displacement adjusting proportional valve according to the comparison result so as to control the flow rate of the variable displacement hydraulic pump.
3. The hydraulic cooling system of a hydraulic excavator according to claim 1, wherein: the temperature sensors are respectively arranged on an engine, an intercooler, a hydraulic driving system and a torque converter of the excavator.
4. The hydraulic cooling system of a hydraulic excavator according to claim 1, wherein: the temperature sensor on the engine is arranged on the engine body or on a cooling liquid circulating pipeline or on a radiator of the engine.
5. A cooling system for a construction machine according to claim 3, wherein: and the temperature sensor on the intercooler is arranged on the intercooler body or an air inlet pipeline of the engine.
6. A cooling system for a construction machine according to claim 3, wherein: and the temperature sensor on the hydraulic driving system is fixedly arranged on a hydraulic oil tank, a hydraulic pipeline or a radiator of the hydraulic oil tank.
7. A cooling system for a construction machine according to claim 3, wherein: and the temperature sensor on the torque converter is fixedly arranged on the torque converter body or a torque converter cooling oil pipeline or a torque converter radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911138378.7A CN112824661A (en) | 2019-11-20 | 2019-11-20 | Hydraulic cooling system of hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911138378.7A CN112824661A (en) | 2019-11-20 | 2019-11-20 | Hydraulic cooling system of hydraulic excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112824661A true CN112824661A (en) | 2021-05-21 |
Family
ID=75906602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911138378.7A Pending CN112824661A (en) | 2019-11-20 | 2019-11-20 | Hydraulic cooling system of hydraulic excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112824661A (en) |
-
2019
- 2019-11-20 CN CN201911138378.7A patent/CN112824661A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210521 |
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| WD01 | Invention patent application deemed withdrawn after publication |