CN110185679A - Hydraulic oil cooling system, excavator and hydraulic oil cooling control method - Google Patents
Hydraulic oil cooling system, excavator and hydraulic oil cooling control method Download PDFInfo
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- CN110185679A CN110185679A CN201910460302.XA CN201910460302A CN110185679A CN 110185679 A CN110185679 A CN 110185679A CN 201910460302 A CN201910460302 A CN 201910460302A CN 110185679 A CN110185679 A CN 110185679A
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- hydraulic oil
- hydraulic
- oil
- radiator
- pressure
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
- E02F5/305—Arrangements for breaking-up hard ground
-
- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- 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
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
This application provides a kind of hydraulic oil cooling system, excavator and hydraulic oil cooling control methods, are related to technical field of engineering machinery.The hydraulic oil cooling system includes: main valve oil return pipe, quartering hammer oil return pipe, hydraulic oil radiator and hydraulic oil container, and hydraulic oil radiator oiler is connected with the main valve oil return pipe, the quartering hammer oil return pipe respectively；The oil return opening of hydraulic oil container is connected with the oil outlet of the hydraulic oil radiator.The excavator includes hydraulic main valve, quartering hammer and the hydraulic oil cooling system.The hydraulic oil cooling control method, the pressure information at the oiler including obtaining the hydraulic oil radiator；The absorption power of the hydraulic main pump is controlled according to the pressure information.The present invention is conducive to that hydraulic oil radiator is made to play maximum radiating efficiency, and the redundancy of hydraulic oil radiator is high, has the function of low-temperature pressure protection.
Description
Technical field
The present invention relates to technical field of engineering machinery, more particularly, to a kind of hydraulic oil cooling system, excavator and hydraulic
Oily cooling control method.
Background technique
Hydraulic breaking hammer is a kind of important equipment of excavator, at present in quartering hammer hydraulic oil cooling system, quartering hammer
Oil return by all the way after hydraulic oil radiator, being back to hydraulic oil container, being bypassed all the way to hydraulic oil container after hydraulic main valve,
But this design is under quartering hammer operating condition so that have a large amount of hydraulic oil without hydraulic oil radiator, and direct bypassing reflux stream is to hydraulic
Fuel tank cannot play hydraulic oil radiator maximum radiating efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic oil cooling system, excavator and hydraulic oil cooling control methods, have
Conducive to making hydraulic oil radiator play maximum radiating efficiency, the redundancy of hydraulic oil radiator is high, has low-temperature pressure protection
Function.
In a first aspect, this application provides a kind of hydraulic oil cooling systems comprising:
Main valve oil return pipe, for being connected with hydraulic main valve；
Quartering hammer oil return pipe, for being connected with quartering hammer；
Hydraulic oil radiator, oiler are connected with the main valve oil return pipe, the quartering hammer oil return pipe respectively；
Hydraulic oil container, oil return opening are connected with the oil outlet of the hydraulic oil radiator.
In the first possible implementation of the first aspect, hydraulic oil cooling system further include: pressure sensor is used
Pressure at the oiler for detecting the hydraulic oil radiator.
With reference to first aspect or the first possible implementation of first aspect, second of possible realization side
In formula, hydraulic oil cooling system further include: temperature sensor, be set to the hydraulic oil container bottom and/or the hydraulic oil
The oil outlet of radiator, for detecting the temperature of hydraulic oil.
With reference to first aspect or first aspect the first to second any one possible implementation, at the third
In possible implementation, hydraulic oil cooling system further include: the first check valve, entrance are connected with the quartering hammer oil return pipe
It is logical；The outlet of first check valve is connected with the oil return opening of the hydraulic oil container.
The third possible implementation with reference to first aspect, in the fourth possible implementation, hydraulic oil heat dissipation
System further include: second one-way valve, entrance are connected with the main valve oil return pipe；The outlet of the second one-way valve with it is described
The oil return opening of hydraulic oil container is connected.
4th kind of possible implementation with reference to first aspect, in a fifth possible implementation, described first is single
It is greater than the cracking pressure of the second one-way valve to the cracking pressure of valve.
Any one in 4th kind of possible implementation and the 5th kind of possible implementation with reference to first aspect
Implementation, in a sixth possible implementation, hydraulic oil cooling system further include counterbalance valve, entrance and the main valve
Oil return pipe is connected；The outlet of the counterbalance valve is connected with the oiler of the hydraulic oil radiator, and the counterbalance valve
Outlet is also connected with the quartering hammer oil return pipe.
Third is to the 6th kind of any one mode in the cards with reference to first aspect, in the 7th kind of possible implementation
In, the cracking pressure of first check valve is not more than the maximum allowable working pressure of the oiler of the hydraulic oil radiator.
Second aspect, present invention also provides a kind of excavators comprising hydraulic main valve, quartering hammer and described hydraulic
Oily cooling system；The hydraulic main valve is connected with the main valve oil return pipe；The quartering hammer and the quartering hammer oil return pipe phase
Connection.
In the first possible implementation of the second aspect, excavator further include: hydraulic main pump, with hydraulic oil container
Oil outlet be connected；
Engine, for providing operation power for the hydraulic main pump；
Air-conditioning system, the air-conditioning condenser of the air-conditioning system are installed in front of the hydraulic oil radiator.
The third aspect, present invention also provides a kind of hydraulic oil cooling control method, which includes:
By the oiler of main valve oil return pipe and quartering hammer oil return pipe parallel communication to hydraulic oil radiator, and dissipate hydraulic oil
The oil outlet of hot device is connected with the oil return opening of hydraulic oil container, wherein the main valve oil return pipe is also connected with hydraulic main valve, institute
Quartering hammer oil return pipe is stated also to be connected with quartering hammer；
Hydraulic main pump is connected with the oil outlet of the hydraulic oil container；
Obtain the pressure information at the oiler of the hydraulic oil radiator；
The absorption power of the hydraulic main pump is controlled according to the pressure information.
In the first possible implementation of the third aspect, described that the Hydraulic Main is controlled according to the pressure information
The method of the absorption power of pump includes:
When the pressure of the oiler of the hydraulic oil radiator is not less than setup pressure value, the hydraulic main pump is reduced
Absorb power；When the pressure of the oiler of the hydraulic oil radiator is less than setup pressure value, not to the hydraulic main pump
It absorbs power and does limit value intervention.
In conjunction with the possible implementation of the first of the third aspect or the third aspect, second of possible realization side
In formula, is also controlled according to the pressure information and the revolving speed of the engine of power is provided for the hydraulic main pump, wherein when the liquid
When the pressure of the oiler of pressure oil radiator is not less than setup pressure value, the revolving speed of the engine is reduced；When the hydraulic oil
When the pressure of the oiler of radiator is less than setup pressure value, limit value intervention is not done to the revolving speed of the engine.
In conjunction with the third aspect or the third aspect the first to second any one possible implementation, at the third
In possible implementation, the control method further include:
Obtain the liquid of the temperature information of the hydraulic oil in the hydraulic oil container or the oil outlet of the hydraulic oil radiator
The temperature information of pressure oil；
The working condition of the fan of the hydraulic oil radiator is controlled according to the temperature information.
The third possible implementation in conjunction with the third aspect, it is in the fourth possible implementation, described according to institute
The method of working condition for stating the fan that temperature information controls the hydraulic oil radiator includes:
When the temperature for detecting the hydraulic oil is less than set temperature value, the fan is made to stall or reduce the fan
Revolving speed；When detecting the temperature of the hydraulic oil not less than the set temperature value, the revolving speed of the fan is improved.
Any one in conjunction with the third aspect in the third possible implementation and the 4th kind of possible implementation
The air-conditioning condenser of air-conditioning system is installed on the hydraulic oil and radiated by implementation in a fifth possible implementation
In front of device, make the fan air-conditioning condenser air feed；Obtain what whether the compressor of air conditioner of the air-conditioning system was opened
Work state information, and when collecting the work state information that the compressor of air conditioner is open state, make the fan
Minimum speed be not less than setting rotating speed of fan.
Compared with prior art, the invention has the benefit that
Hydraulic oil cooling system, excavator and hydraulic oil cooling control method provided by the invention, by by quartering hammer
Oil return and the oil return of hydraulic main valve pass through quartering hammer oil return pipe respectively, main valve oil return pipe enters hydraulic oil radiator, are achieved
The shunting of the oil return of the oil return and hydraulic main valve of quartering hammer, so that the inlet for being conducive to reduce hydraulic oil radiator is pressed
Power can make more oil returns flow into hydraulic oil radiator afterwards, hydraulic oil radiator is made to play maximum radiating efficiency, hydraulic
The redundancy of oil radiator is higher；When low due to hydraulic oil temperature, the viscosity of hydraulic oil is big, the oiler of hydraulic oil radiator by
Pressure may be exceeded, and be just conducive to radiate to hydraulic oil by the shunting of the oil return of quartering hammer and the oil return of hydraulic main valve
The pressure of the oiler of device is controlled, and has the function of low-temperature pressure protection.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structure principle chart of liquid oil cooling system in the embodiment of the present application；
Fig. 2 is one embodiment figure of the liquid oil cooling system of the embodiment of the present application；
Fig. 3 is the control drawing of the liquid oil cooling control method in the embodiment of the present application；
Fig. 4 is the partial structural diagram of liquid oil cooling system in the embodiment of the present application；
Fig. 5 is another partial structural diagram of liquid oil cooling system in the embodiment of the present application.
Icon:
100- hydraulic oil radiator；101- main valve oil return pipe；102- quartering hammer oil return pipe；103- hydraulic oil container；104- pressure
Force snesor；105- temperature sensor；The first check valve of 106-；107- second one-way valve；108- counterbalance valve；109- first is hydraulic
Pipeline；201- quartering hammer；202- hydraulic main valve；301- steel pipe；The first sebific duct of 302-；303- the first oil return block；304- second is returned
Oil clot；The second sebific duct of 305-；306- oiler.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Shown in Figure 1, the embodiment of the present application provides a kind of hydraulic oil cooling system, is suitable for quartering hammer hydraulic oil
Heat dissipation；The hydraulic oil cooling system includes main valve oil return pipe 101, quartering hammer oil return pipe 102, hydraulic oil radiator 100 and liquid
Pressure oil case 103；Main valve oil return pipe 101 with hydraulic main valve 202 for being connected；Quartering hammer oil return pipe 102 is used for and quartering hammer 201
It is connected；The oiler of hydraulic oil radiator 100 is connected with main valve oil return pipe 101, quartering hammer oil return pipe 102 respectively, i.e., main
It is connected again with the oiler of hydraulic oil radiator 100 after valve oil return pipe 101,102 parallel communication of quartering hammer oil return pipe；Hydraulic oil
The oil return opening of case 103 is connected with the oil outlet of hydraulic oil radiator 100.
Specifically, the oil outlet of hydraulic main valve 202 is connected with one end of main valve oil return pipe 101, main valve oil return pipe 101
The other end be connected with the oiler of hydraulic oil radiator 100；The oil outlet of quartering hammer 201 and quartering hammer oil return pipe 102
One end is connected, and the other end of quartering hammer oil return pipe 102 is connected to be connected with the oiler of hydraulic oil radiator 100.Complete machine
Working hydraulic pressure oil circuit oil return (in addition to quartering hammer oil return) is successively back to hydraulic oil through hydraulic main valve 202 and main valve oil return pipe 101
Radiator 100, and the oil return of quartering hammer is back to hydraulic oil radiator 100 namely hydraulic main valve through quartering hammer oil return pipe 102
202 are connected by way of in parallel with hydraulic oil radiator 100 with quartering hammer.The oil return opening of hydraulic oil container 103 and the first liquid
The one end on pressure pipe road 109 is connected, and the other end of the first fluid pressure line 109 is connected with the oil outlet of hydraulic oil radiator 100,
Hydraulic oil in this way after the cooling of hydraulic oil radiator 100 can be back to hydraulic oil container 103 by the first fluid pressure line 109.
The hydraulic oil cooling system that the embodiment provides by by the oil return of quartering hammer and the oil return of hydraulic main valve 202 point
Not Tong Guo quartering hammer oil return pipe 102, main valve oil return pipe 101 enter hydraulic oil radiator 100, the oil return of quartering hammer has been achieved
And the shunting of the oil return of hydraulic main valve 202, so that the inlet for being conducive to reduce hydraulic oil radiator 100 is under pressure, afterwards
More oil returns can be made to flow into hydraulic oil radiator 100, hydraulic oil radiator 100 is made to play maximum radiating efficiency, it is hydraulic
The redundancy of oil radiator 100 is higher, i.e., the design heat-sinking capability of hydraulic oil radiator 100 is greater than standard requirements value；Due to liquid
When pressure oil temperature is low, the viscosity of hydraulic oil is big, and the pressure that the oiler of hydraulic oil radiator 100 is subject to may be exceeded, and passes through
The shunting of the oil return of the oil return and hydraulic main valve 202 of quartering hammer is just conducive to the pressure of the oiler to hydraulic oil radiator 100
It is controlled, has the function of low-temperature pressure protection.
Shown in Figure 2, in the optional scheme of the embodiment, hydraulic oil cooling system further includes pressure sensor 104, pressure
Force snesor 104 is used to detect the pressure at the oiler of hydraulic oil radiator 100；By pressure sensor 104, so as to real-time
The pressure of the oiler of hydraulic oil radiator 100 is monitored, to adjust the control strategy to quartering hammer, so as to preferably protect
Hydraulic oil radiator 100.
Shown in Figure 2, in the optional scheme of the embodiment, hydraulic oil cooling system further includes temperature sensor 105, temperature
Degree sensor 105 is set to the bottom of hydraulic oil container 103 or the oil outlet of hydraulic oil radiator 100, for detecting hydraulic oil
Temperature.
Specifically, the bottom in hydraulic oil container 103 can be arranged in temperature sensor 105 to detect hydraulic oil container
The temperature of hydraulic oil in 103, or the oil outlet of hydraulic oil radiator 100 is arranged in detect from liquid in temperature sensor 105
Press the temperature of the hydraulic oil of the oil outlet outflow of radiator.Shown in Figure 2, the temperature sensor 105 in the embodiment is arranged
In the oil outlet of hydraulic oil radiator 100.
It should be noted that can also be respectively provided in the bottom of hydraulic oil container 103 and the oil outlet of hydraulic oil radiator 100
Temperature sensor 105, for detecting the temperature of hydraulic oil.
Shown in Figure 2, in the optional scheme of the embodiment, hydraulic oil cooling system further includes the first check valve 106, the
The entrance of one check valve 106 is connected with quartering hammer oil return pipe 102；The outlet of first check valve 106 and returning for hydraulic oil container 103
Hydraulic fluid port is connected.By the first check valve 106 of setting, a part of hydraulic oil may be implemented by 106 overflow of the first check valve
Enter hydraulic oil container 103, avoiding the pressure of the oiler of hydraulic oil radiator 100 is more than maximum allowable working pressure, so as to
Play the protection to hydraulic oil radiator 100.
Specifically, the other end of quartering hammer oil return pipe 102 is connected with the entrance of the first check valve 106, first is unidirectional
Valve 106 can only make the hydraulic oil flowed out from quartering hammer oil return pipe 102 enter hydraulic oil container 103, and the first check valve 106 can be used as
It is used by the by-passing valve of quartering hammer oil return to hydraulic oil container 103.
Shown in Figure 2, in the optional scheme of the embodiment, hydraulic oil cooling system further includes second one-way valve 107, the
The entrance of two check valves 107 is connected with main valve oil return pipe 101；The outlet of second one-way valve 107 and the oil return of hydraulic oil container 103
Mouth is connected.By the second one-way valve 107 of setting, a part of hydraulic oil may be implemented and enter by 107 overflow of second one-way valve
Hydraulic oil container 103, avoiding the pressure of the oiler of hydraulic oil radiator 100 is more than maximum allowable working pressure, so as to rise
To the protection to hydraulic oil radiator 100.
Specifically, the other end of main valve oil return pipe 101 is connected with the entrance of second one-way valve 107, second one-way valve
107 can only make the hydraulic oil flowed out from main valve oil return pipe 101 enter hydraulic oil container 103, and second one-way valve 107 can be used as by liquid
The by-passing valve for pressing 202 oil return of main valve to hydraulic oil container 103 uses.
Shown in Figure 2, in the optional scheme of the embodiment, hydraulic oil cooling system further includes counterbalance valve 108, counterbalance valve
108 entrance is connected with main valve oil return pipe 101；The outlet of counterbalance valve 108 is connected with the oiler of hydraulic oil radiator 100
It is logical, and the outlet of counterbalance valve 108 is also connected with quartering hammer oil return pipe 102.It can be complete machine (except broken by counterbalance valve 108
Hammer is outer) oil return offer back pressure, to guarantee that normally revolution acts complete machine.
Specifically, the other end of main valve oil return pipe 101 is connected with the entrance of counterbalance valve 108, quartering hammer oil return pipe 102
The other end be connected with the outlet of counterbalance valve 108；It in this way can be to avoid between quartering hammer oil return and the oil return of hydraulic main valve 202
Interference.
In the optional scheme of the embodiment, the cracking pressure of the first check valve 106 is greater than the unlatching pressure of second one-way valve 107
Power.Maximum allowable working pressure of the cracking pressure of first check valve 106 no more than the oiler of hydraulic oil radiator 100.This
Sample can guarantee under quartering hammer operating condition that hydraulic oil is all through 100 oil return of hydraulic oil radiator.
Specifically, the cracking pressure of counterbalance valve 108 is less than the cracking pressure of second one-way valve 107, counterbalance valve 108 can be with
Using check valve, hydraulic oil can only be flowed into from the entrance of counterbalance valve 108, and be flowed out from the outlet of counterbalance valve 108.First check valve
106, the presence of second one-way valve 107 and counterbalance valve 108 will affect the return flow into hydraulic oil radiator 100, thus shadow
Ring the heat dissipation performance of hydraulic oil radiator 100.It should be noted that the cracking pressure of the first check valve 106 is substantially and hydraulic oil
The maximum allowable working pressure of the oiler of radiator 100 is equal.
Referring to fig. 4 and shown in Fig. 5, in the optional scheme of the embodiment, quartering hammer oil return pipe 102 may include steel pipe 301
With the first sebific duct 302；The oiler 306 of one end of steel pipe 301 is connected with quartering hammer 201, and one end of steel pipe 301 is also with
The entrance of one check valve 106 is connected, and the other end of steel pipe 301 is connected with one end of the first sebific duct 302, the first sebific duct 302
The other end be connected with an entrance of the first oil return block 303, the outlet of counterbalance valve 108 passes through the second sebific duct 305 and first time
Another entrance of oil clot 303 is connected, and the outlet of the first oil return block 303 is connected with hydraulic oil radiator 100, such Hydraulic Main
The oil return of valve 202 and the oil return of quartering hammer 201 flow through hydraulic oil radiator 100 behind the first oil return block 303 interflow jointly, through liquid
Pressure oil radiator 100 passes through the first fluid pressure line 109 after cooling down and returns to hydraulic oil container 103；The outlet of first check valve 106 and the
One entrance of two oil return blocks 304 is connected, and the outlet of the first fluid pressure line 109 is connected with another entrance of the second oil return block 304
Logical, the outlet of the second oil return block 304 is connected with hydraulic oil container 103.Main valve oil return pipe 101 can use sebific duct, and first is hydraulic
Pipeline 109 can use sebific duct.First check valve 106 can set 0.6bar with pressure, be greater than there is return pressure
When 0.6bar, the first check valve 106 is opened, and hydraulic oil takes back hydraulic oil container 103 by the second oil return block straight 304, eliminates pressure
Power peak value prevents hydraulic fluid pressure is excessively high from breaking through hydraulic oil radiator 100.It should be noted that the unlatching of the first check valve 106
Pressure value is not only limited to 0.6bar, can also set according to needs are realized.
In the embodiment, the flow direction of the hydraulic oil of hydraulic oil cooling system specifically: from the oil outlet stream of hydraulic main valve 202
Hydraulic oil out can flow to second one-way valve 107 and then flow into hydraulic oil container 103 after the outflow of main valve oil return pipe 101, can also
To flow to hydraulic oil radiator 100 through counterbalance valve 108 again after flowing to counterbalance valve 108.The liquid flowed out from the oil outlet of quartering hammer 201
Pressure oil can flow to the first check valve 106 and then flow into hydraulic oil container 103, can also flow after the outflow of quartering hammer oil return pipe 102
To hydraulic oil radiator 100.
The embodiment of the present application also provides a kind of excavators comprising hydraulic main valve 202, quartering hammer and described hydraulic
Oily cooling system；Hydraulic main valve 202 is connected with main valve oil return pipe 101；Quartering hammer is connected with quartering hammer oil return pipe 102.
In the optional scheme of the embodiment, excavator further includes hydraulic main pump, engine and air-conditioning system, hydraulic main pump with
The oil outlet of hydraulic oil container 103 is connected；Engine can pump for Hydraulic Main and provide operation power.The air-conditioning system is driver's cabin
Air-conditioning system；The air-conditioning condenser of air-conditioning system is installed on 100 front of hydraulic oil radiator, passes through hydraulic oil radiator 100
Fan provide cold side wind for air-conditioning condenser, i.e., make wind by air-conditioning condenser by way of air draught.The sky of air-conditioning system
Compressor is adjusted to be connected with air-conditioning condenser.The impeller of fan is driven by hydraulic motor, and the rotational speed regulation to fan is exactly to liquid
The adjusting of the revolving speed of pressure motor.The temperature that hydraulic oil is detected by temperature sensor 105, by the feedback of the temperature of hydraulic oil, PID
The revolving speed of the hydraulic motor of closed-loop control fan, in order to realize low oil consumption low noise.
Referring to shown in Fig. 1 to Fig. 3, the embodiment of the present application also provides a kind of hydraulic oil cooling control method, the controlling parties
Method can be adapted for the excavator with quartering hammer of the embodiment of the present application.
The hydraulic oil cooling control method includes: by main valve oil return pipe 101 and 102 parallel communication of quartering hammer oil return pipe to liquid
The oiler of pressure oil radiator 100, and the oil outlet of hydraulic oil radiator 100 and the oil return opening of hydraulic oil container 103 is made to be connected,
Wherein, main valve oil return pipe 101 is also connected with hydraulic main valve 202, and quartering hammer oil return pipe 102 is also connected with quartering hammer；By liquid
Pressure main pump is connected with the oil outlet of hydraulic oil container 103；It is passed by the pressure being arranged at the oiler of hydraulic oil radiator 100
Sensor 104, the pressure information at oiler to obtain hydraulic oil radiator 100；Then entire car controller (VECU) receives institute
The pressure information that pressure sensor 104 is sent, and control according to pressure information the absorption power of hydraulic main pump.
In the optional scheme of the embodiment, entire car controller controls the absorption power and hair of hydraulic main pump according to pressure information
The revolving speed of motivation, specific control strategy are as follows:
When the pressure of the oiler of hydraulic oil radiator 100 be not less than setup pressure value when, reduce engine revolving speed and
The absorption power of hydraulic main pump；When the pressure of the oiler of hydraulic oil radiator 100 is less than setup pressure value, not to engine
Revolving speed and the absorption power of hydraulic main pump do limit value intervention.Hydraulic main pump is controlled according to pressure information by entire car controller
The revolving speed for absorbing power and engine after, can finally change pressure at the oiler of hydraulic oil radiator 100.
In the optional scheme of the embodiment, the control method further include: utilize the temperature for the bottom that hydraulic oil container 103 is set
The temperature information for the hydraulic oil that sensor 105 obtains in hydraulic oil container 103 is spent, or utilizes and hydraulic oil radiator 100 is set
The temperature sensor 105 of oil outlet obtains the temperature information of the hydraulic oil of the oil outlet of hydraulic oil radiator 100；Vehicle control
After device processed receives the temperature information that temperature sensor 105 obtains, entire car controller controls hydraulic oil radiator according to temperature information
The working condition of 100 fan.
In the optional scheme of the embodiment, entire car controller controls the fan of hydraulic oil radiator 100 according to temperature information
Working condition method include: when detect hydraulic oil temperature be less than set temperature value when, make fan stall or reduce wind
The revolving speed of fan, that is to say, that stall the hydraulic motor of fan, or reduce the revolving speed of hydraulic motor, setting hydraulic motor
Low or first gear under work；When detecting the temperature of hydraulic oil not less than set temperature value, the revolving speed of fan is improved, i.e. raising liquid
The revolving speed of pressure motor.
In the optional scheme of the embodiment, entire car controller also acquires the work whether compressor of air conditioner of air-conditioning system is opened
Make status information, and when collecting the work state information that compressor of air conditioner is open state, makes the minimum speed of fan
Not less than setting rotating speed of fan, even if the minimum speed of hydraulic motor is not less than the hydraulic motor rotary speed of setting, to guarantee to drive
Sail the normal work of the air-conditioning system of room.
In conclusion hydraulic oil cooling system provided by the embodiments of the present application, excavator and hydraulic oil cooling control method,
Have the characteristics that high efficiency, low noise, high reliability, the revolving speed by reducing fan can reduce influence of noise driver；It is broken
Hammer oil return is isolated with complete machine working hydraulic pressure oil circuit oil return, and hydraulic oil radiator 100 is passed through in two-way oil return, and radiator redundancy is high,
With low-temperature pressure defencive function, and the temperature of hydraulic oil can be made to be maintained within the scope of constant operation, make hydraulic system
Work is in the optimum interval of efficiency.Under quartering hammer operating condition, the height of 100 reliability of hydraulic oil radiator, hydraulic oil dissipates under low temperature environment
The pressure of the oiler of hot device 100 is not easy exceeded, reduces the failure rate of hydraulic oil radiator 100.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (16)
1. a kind of hydraulic oil cooling system characterized by comprising
Main valve oil return pipe (101), for being connected with hydraulic main valve (202)；
Quartering hammer oil return pipe (102), for being connected with quartering hammer (201)；
Hydraulic oil radiator (100), oiler respectively with the main valve oil return pipe (101), the quartering hammer oil return pipe (102)
It is connected；
Hydraulic oil container (103), oil return opening are connected with the oil outlet of the hydraulic oil radiator (100).
2. hydraulic oil cooling system according to claim 1, which is characterized in that further include: pressure sensor (104) is used
Pressure at the oiler for detecting the hydraulic oil radiator (100).
3. hydraulic oil cooling system according to claim 1, which is characterized in that further include: temperature sensor (105), if
It is placed in the bottom of the hydraulic oil container (103) and/or the oil outlet of the hydraulic oil radiator (100), for detecting hydraulic oil
Temperature.
4. hydraulic oil cooling system according to any one of claim 1-3, which is characterized in that further include: first is unidirectional
Valve (106), entrance are connected with the quartering hammer oil return pipe (102)；The outlet of first check valve (106) and the liquid
The oil return opening of pressure oil case (103) is connected.
5. hydraulic oil cooling system according to claim 4, which is characterized in that further include: second one-way valve (107),
Entrance is connected with the main valve oil return pipe (101)；The outlet and the hydraulic oil container (103) of the second one-way valve (107)
Oil return opening be connected.
6. hydraulic oil cooling system according to claim 5, which is characterized in that the unlatching of first check valve (106)
Pressure is greater than the cracking pressure of the second one-way valve (107).
7. hydraulic oil cooling system according to claim 5, which is characterized in that further include counterbalance valve (108), entrance with
The main valve oil return pipe (101) is connected；The outlet of the counterbalance valve (108) enters oil with the hydraulic oil radiator (100)
Mouth is connected, and the outlet of the counterbalance valve (108) is also connected with the quartering hammer oil return pipe (102).
8. hydraulic oil cooling system according to claim 4, which is characterized in that the unlatching of first check valve (106)
Maximum allowable working pressure of the pressure no more than the oiler of the hydraulic oil radiator (100).
9. a kind of excavator, which is characterized in that including hydraulic main valve (202), quartering hammer (201) and as in claim 1-8
Described in any item hydraulic oil cooling systems；The hydraulic main valve (202) is connected with the main valve oil return pipe (101)；It is described
Quartering hammer is connected with the quartering hammer oil return pipe (102).
10. excavator according to claim 9, which is characterized in that further include: hydraulic main pump, with hydraulic oil container (103)
Oil outlet be connected；
Engine, for providing operation power for the hydraulic main pump；
Air-conditioning system, the air-conditioning condenser of the air-conditioning system are installed in front of the hydraulic oil radiator (100).
11. a kind of hydraulic oil cooling control method, which is characterized in that the control method includes:
By the oiler of main valve oil return pipe (101) and quartering hammer oil return pipe (102) parallel communication to hydraulic oil radiator (100),
And the oil outlet of hydraulic oil radiator (100) and the oil return opening of hydraulic oil container (103) is made to be connected, wherein the main valve oil return
Pipe (101) is also connected with hydraulic main valve (202), and the quartering hammer oil return pipe (102) is also connected with quartering hammer (201)；
Hydraulic main pump is connected with the oil outlet of the hydraulic oil container (103)；
Obtain the pressure information at the oiler of the hydraulic oil radiator (100)；
The absorption power of the hydraulic main pump is controlled according to the pressure information.
12. hydraulic oil cooling control method according to claim 11, which is characterized in that described according to the pressure information
The method for controlling the absorption power of the hydraulic main pump includes:
When the pressure of the oiler of the hydraulic oil radiator (100) is not less than setup pressure value, the hydraulic main pump is reduced
Absorption power；When the pressure of the oiler of the hydraulic oil radiator (100) is less than setup pressure value, not to described hydraulic
The absorption power of main pump does limit value intervention.
13. hydraulic oil cooling control method according to claim 12, which is characterized in that also controlled according to the pressure information
It is made as the revolving speed that the hydraulic main pump provides the engine of power, wherein when the oiler of the hydraulic oil radiator (100)
When pressure is not less than setup pressure value, the revolving speed of the engine is reduced；When the oiler of the hydraulic oil radiator (100)
When pressure is less than setup pressure value, limit value intervention is not done to the revolving speed of the engine.
14. hydraulic oil cooling control method described in any one of 1-13 according to claim 1, which is characterized in that the controlling party
Method further include:
Obtain the temperature information of the hydraulic oil in the hydraulic oil container (103) or the oil outlet of the hydraulic oil radiator (100)
The temperature information of the hydraulic oil at place；
The working condition of the fan of the hydraulic oil radiator (100) is controlled according to the temperature information.
15. hydraulic oil cooling control method according to claim 14, which is characterized in that described according to the temperature information
The method for controlling the working condition of the fan of the hydraulic oil radiator (100) includes:
When the temperature for detecting the hydraulic oil is less than set temperature value, the fan is made to stall or reduce turning for the fan
Speed；When detecting the temperature of the hydraulic oil not less than the set temperature value, the revolving speed of the fan is improved.
16. hydraulic oil cooling control method according to claim 14, which is characterized in that by the air conditioner condensation of air-conditioning system
Device is installed in front of the hydraulic oil radiator (100), makes the fan air-conditioning condenser air feed；
The work state information whether compressor of air conditioner of the air-conditioning system is opened is obtained, and works as and collects the air-conditioning pressure
When contracting machine is the work state information of open state, make the minimum speed of the fan not less than setting rotating speed of fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460302.XA CN110185679A (en) | 2019-05-29 | 2019-05-29 | Hydraulic oil cooling system, excavator and hydraulic oil cooling control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460302.XA CN110185679A (en) | 2019-05-29 | 2019-05-29 | Hydraulic oil cooling system, excavator and hydraulic oil cooling control method |
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| CN110185679A true CN110185679A (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910460302.XA Pending CN110185679A (en) | 2019-05-29 | 2019-05-29 | Hydraulic oil cooling system, excavator and hydraulic oil cooling control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111173068A (en) * | 2019-12-31 | 2020-05-19 | 中联重科股份有限公司 | Temperature self-adaptive control method and system for engineering machinery and engineering machinery |
| 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 |
| CN113301781A (en) * | 2021-05-26 | 2021-08-24 | 三一重机有限公司 | Heat dissipation device, control method thereof, crushing equipment and operation machine |
| CN116146705A (en) * | 2022-12-28 | 2023-05-23 | 山东临工工程机械有限公司 | Hydraulic system with heat dissipation function and engineering machinery vehicle |
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| 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 |
| CN113301781A (en) * | 2021-05-26 | 2021-08-24 | 三一重机有限公司 | Heat dissipation device, control method thereof, crushing equipment and operation machine |
| CN116146705A (en) * | 2022-12-28 | 2023-05-23 | 山东临工工程机械有限公司 | Hydraulic system with heat dissipation function and engineering machinery vehicle |
| CN116146705B (en) * | 2022-12-28 | 2023-10-27 | 山东临工工程机械有限公司 | Hydraulic system with heat dissipation function and engineering machinery vehicle |
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