CN203462502U - Stable shunt type oil source regeneration system for loader - Google Patents

Stable shunt type oil source regeneration system for loader Download PDF

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Publication number
CN203462502U
CN203462502U CN201320509350.1U CN201320509350U CN203462502U CN 203462502 U CN203462502 U CN 203462502U CN 201320509350 U CN201320509350 U CN 201320509350U CN 203462502 U CN203462502 U CN 203462502U
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CN
China
Prior art keywords
oil
regeneration module
hydraulic
valve
stable
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Expired - Fee Related
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CN201320509350.1U
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Chinese (zh)
Inventor
胡重贺
谢朝阳
周涛
束鹏程
朱艳平
任大明
范小童
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Technology Branch of XCMG Engineering Machinery Co Ltd
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Technology Branch of XCMG Engineering Machinery Co Ltd
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Priority to CN201320509350.1U priority Critical patent/CN203462502U/en
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Abstract

The utility model relates to a stable shunt type oil source regeneration system for a loader. A distribution valve is connected with a hydraulic oil tank through a working pump, and an oil source regeneration module is connected with the distribution valve; a first oil outlet of the oil source regeneration module is connected with a boom cylinder small cavity, and a second oil outlet of the oil source regeneration module is connected with a skip cylinder small cavity; a stable shunt port of the oil source regeneration module is connected with an oil inlet of a hydraulic oil radiator, and the hydraulic oil radiator is connected with an oil return tank through a return oil filter; a pilot valve is connected with the hydraulic oil tank through a pilot pump. The stable shunt type oil source regeneration system provided by the utility model has the advantages of adopting a stable shunt mode to provide the hydraulic oil radiator with stable radiation flow, and eliminating pressure impact caused by return oil flow mutation of the hydraulic system, thereby protecting the hydraulic oil radiator; adopting the shunt pressure of the stable shunt type oil source regeneration module to realize the oil replenishing function of the hydraulic system; adopting an external oil replenishing circuit to realize the oil replenishing function of the hydraulic system; and adopting an integrated module to realize the system function.

Description

Loader is stablized bypass type oil sources regenerative system
Technical field
The utility model relates to a kind of oil sources regenerating unit of loader hydraulic system.
Background technology
Loader is under the effect of swing arm and equipment deadweight, and swing arm decrease speed is very fast, the now quick oil return of boom cylinder cavity of resorption, and boom cylinder loculus is because producing parital vacuum for shortage of oil; Equally when discharging, due to the effect of material and scraper bowl deadweight, the quick oil return in the large chamber of dump ram, loculus is also because producing parital vacuum for shortage of oil.When swing arm fast-descending and quickly discharging material, hydraulic system oil return flow surges, for the system that adopts fixed orifice to shunt, enter the fluid flow that hydraulic oil is loose also can increase severely thereupon, thereby hydraulic oil is fallen apart and causes fierce compression shock, cause the hydraulic oil explosion of faling apart, have a strong impact on the application life that hydraulic oil is loose.Meanwhile, boom cylinder, dump ram loculus produce parital vacuum, cause the gas evolution of solubility in fluid, hydraulic system stiffness degradation, and finally cause cavitation.Although the distributing valve of selecting in industry is at present with repairing function, yet because valve inner oil duct is narrow, and valve port opening is extremely limited, causes repairing effect not obvious, and cavitation still exists.
Summary of the invention
In order to solve cooling system compression shock and the not enough cavitation erosion problem producing of distributing valve repairing in loading arm fast drop course, the utility model provides a kind of loader to stablize bypass type oil sources regenerative system.The integrated flow stabilizing valve of this internal system, under the effect of the settable orifice of flow stabilizing valve inside, even if hydraulic system of working oil return flow is undergone mutation, this system still can provide for hydraulic oil is loose highly stable flow, thereby eliminates the loose inner compression shock of hydraulic oil; Under the effect of shunting back pressure, by the external road that refills, can directly to boom cylinder loculus and dump ram loculus, carry out repairing on the other hand, thereby avoid the restriction loss of the inner oil duct of distributing valve and spool, avoid cavitation.
The technical solution of the utility model is: distributing valve connects hydraulic oil container by working barrel, oil sources regeneration module connects distributing valve, the first oil-out of oil sources regeneration module connects boom cylinder loculus, the second oil-out of oil sources regeneration module connects dump ram loculus, the loose oil-in of stable diffluence pass connecting fluid force feed of oil sources regeneration module, hydraulic oil is loose takes back fuel tank through oil return cleaner, and pilot valve connects hydraulic oil container by pioneer pump.
Between the first oil-out in oil sources regeneration module and oil-in, there is the first Fill valve, between the second oil-out and oil-in, there is the second Fill valve, flow stabilizing valve piece oil-in in oil sources regeneration module is connected with the oil-in of oil sources regeneration module, flow stabilizing valve piece oil-out is connected with the stable diffluence pass of oil sources regeneration module, flow stabilizing valve piece oil return opening is connected with the oil return opening of oil sources regeneration module, the first pressure tap is connected with the second oil-out, the second pressure tap is connected with the first oil-out, and the 3rd pressure tap is connected with oil-in.
The utility model has the advantages that: 1, adopted loader to stablize bypass type oil sources regenerative system, the loose internal pressure shock problem of hydraulic oil having caused because of flow sudden change while having solved loading arm fast-descending and discharging, greatly improve the loose operating mode of hydraulic oil, effectively extended hydraulic oil loose application life.2, adopt loader to stablize bypass type oil sources regenerative system, can be when loader fast-descending and quickly discharging material, by outside feed circuit, eliminate oil cylinder emptying phenomenon, prevent gas evolution in fluid, and then stop the cavitation in hydraulic system, guarantee Work Reliability of Hydraulic System, and extend the application life of hydraulic system.3, this system integration degree is high, and components and parts are easily processed, and systemic-function is easy to realize.4, by regulating loader to stablize the bypass flow of bypass type oil sources regeneration module, can control and enter the heat radiation flow that hydraulic oil is loose, thereby obtain good radiating effect.5, by regulating loader to stablize the controlled pressure of bypass type oil sources regeneration module and the opening pressure of Fill valve, can regulate the repairing amount that enters oil cylinder, guarantee to have enough fluid to enter oil cylinder.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model embodiment.
1 hydraulic oil container in Fig. 1,2 working barrels, 3 distributing valves, 4 dump rams, 5 pilot valves, 6 boom cylinders, 7 oil sources regeneration modules, 8 hydraulic oil are loose, 9 oil return cleaners, 10 pioneer pumps.
The specific embodiment
Embodiment: the oil-in of working barrel 2 is connected with hydraulic oil container 1, the oil-out P1 of working barrel 2 is connected with the oil-in of distributing valve 3, the oil inlet P of oil sources regeneration module 7 is connected with the oil return inlet T 1 of distributing valve 3, the first oil-out A of oil sources regeneration module 7 is connected with the rod chamber of boom cylinder 6, the second oil-out B of oil sources regeneration module 7 is connected with the rod chamber of dump ram 4, the stable diffluence pass C of oil sources regeneration module 7 is connected with loose 8 oil-ins of hydraulic oil, the oil return inlet T of oil sources regeneration module 7 and hydraulic oil 8 oil-outs that fall apart are back connected, then through oil return cleaner 9, take back hydraulic oil container 1, pilot valve 5 connects hydraulic oil container 1 by pioneer pump 10.
Between the first oil-out A of oil sources regeneration module 7 and the oil inlet P of oil sources regeneration module 7, there is the first Fill valve D1, between the second oil-out B's and oil sources regeneration module 7 oil inlet P, there is the second Fill valve D2, flow stabilizing valve piece W oil-in in oil sources regeneration module 7 is connected with the oil inlet P of oil sources regeneration module 7, flow stabilizing valve piece W oil-out is connected with the stable diffluence pass C of oil sources regeneration module 7, flow stabilizing valve piece W oil return opening is connected with the oil return inlet T of oil sources regeneration module, the first pressure tap M1 is connected with the second oil-out B, the second pressure tap M2 is connected with the first oil-out A, the 3rd pressure tap M3 is connected with oil sources regeneration module oil inlet P.
Pioneer pump 10 oil-ins are connected with hydraulic oil container 1 with overfall, pioneer pump 10 outlets are connected with pilot valve 5 oil-ins, pilot valve swing arm promotes hydraulic fluid port a2 and is connected with distributing valve swing arm lifting hydraulic fluid port a2 ', pilot valve swing arm decline hydraulic fluid port b2 is connected with distributing valve swing arm decline hydraulic fluid port b2 ', pilot valve tipping bucket hydraulic fluid port b1 is connected with distributing valve tipping bucket hydraulic fluid port b1 ', pilot valve is received bucket hydraulic fluid port a1 and is connected with distributing valve receipts bucket hydraulic fluid port a1 ', the unsteady hydraulic fluid port 2C of pilot valve is connected with the unsteady hydraulic fluid port 2C ' of distributing valve, and pilot valve returns 5 oil return openings and is connected with hydraulic oil container 1.
Oil sources regeneration module 7 is reallocated distributing valve 3 oil return flows, the preferential repairing flow that guarantees boom cylinder 4 and dump ram 6, residual flow is stablized diffluence pass C through oil sources regeneration module 7 and is entered hydraulic oil loose 8, even if distributing valve 3 oil return flows are undergone mutation, the heat radiation flow that enters hydraulic oil loose 8 still can keep stable, and the flow more than needed of last distributing valve 3 oil returns takes back fuel tank 1 through the oil return inlet T of oil sources regeneration module 7.
When pilot valve 5 is when declining position, boom cylinder 6 rod chambers communicate with distributing valve 3 oil return inlet T 1 through the first built-in Fill valve D1 of oil sources regeneration module 7, under the shunting pressure-acting of oil sources regeneration module 7, fluid is supplemented to boom cylinder 6 rod chambers through the first built-in Fill valve D1 of oil sources regeneration module 7, in distributing valve 3 oil returns, another part is stablized diffluence pass C through oil sources regeneration module 7 to enter hydraulic oil loose 8, and the residue fluid of distributing valve 3 oil returns returns hydraulic oil container 1 through oil sources regeneration module 7 oil return inlet T.
When pilot valve 5 is when unloading material level, dump ram 4 rod chambers communicate with distributing valve 3 oil return inlet T 1 through built-in the second Fill valve D2 of oil sources regeneration module, under the shunting pressure-acting of oil sources regeneration module 7, fluid is supplemented to dump ram 4 rod chambers through built-in the second Fill valve D2 of source regeneration module 7, in distributing valve 3 oil returns, another part is stablized diffluence pass C through oil sources regeneration module 7 to enter hydraulic oil loose 8, and the residue fluid of distributing valve 3 oil returns returns hydraulic oil container 1 through oil sources regeneration module 7 oil return inlet T.
The model of the distributing valve 3 using in embodiment is DF32, and the model of the pilot valve 5 using is DXS-00.

Claims (2)

1. a loader is stablized bypass type oil sources regenerative system, distributing valve connects hydraulic oil container by working barrel, it is characterized in that: oil sources regeneration module connects distributing valve, the first oil-out of oil sources regeneration module connects boom cylinder loculus, the second oil-out of oil sources regeneration module connects dump ram loculus, the loose oil-in of stable diffluence pass connecting fluid force feed of oil sources regeneration module, hydraulic oil is loose takes back fuel tank through oil return cleaner, and pilot valve connects hydraulic oil container by pioneer pump.
2. a kind of loader according to claim 1 is stablized bypass type oil sources regenerative system, it is characterized in that: between the first oil-out in oil sources regeneration module and oil-in, have the first Fill valve, between the second oil-out and oil-in, there is the second Fill valve, flow stabilizing valve piece oil-in in oil sources regeneration module is connected with the oil-in of oil sources regeneration module, flow stabilizing valve piece oil-out is connected with the stable diffluence pass of oil sources regeneration module, flow stabilizing valve piece oil return opening is connected with the oil return opening of oil sources regeneration module, the first pressure tap is connected with the second oil-out, the second pressure tap is connected with the first oil-out, the 3rd pressure tap is connected with oil-in.
CN201320509350.1U 2013-08-21 2013-08-21 Stable shunt type oil source regeneration system for loader Expired - Fee Related CN203462502U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320509350.1U CN203462502U (en) 2013-08-21 2013-08-21 Stable shunt type oil source regeneration system for loader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320509350.1U CN203462502U (en) 2013-08-21 2013-08-21 Stable shunt type oil source regeneration system for loader

Publications (1)

Publication Number Publication Date
CN203462502U true CN203462502U (en) 2014-03-05

Family

ID=50174875

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320509350.1U Expired - Fee Related CN203462502U (en) 2013-08-21 2013-08-21 Stable shunt type oil source regeneration system for loader

Country Status (1)

Country Link
CN (1) CN203462502U (en)

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140305

Termination date: 20180821

CF01 Termination of patent right due to non-payment of annual fee