CN204645141U - A kind of dual-purpose hydraulic system of digging shovel - Google Patents
A kind of dual-purpose hydraulic system of digging shovel Download PDFInfo
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- CN204645141U CN204645141U CN201520145726.4U CN201520145726U CN204645141U CN 204645141 U CN204645141 U CN 204645141U CN 201520145726 U CN201520145726 U CN 201520145726U CN 204645141 U CN204645141 U CN 204645141U
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Abstract
The utility model relates to a kind of dual-purpose hydraulic system of digging shovel, comprise hydraulic oil container, oil supply system, oil return system, changing-breadth system, telescopic system, rotary system, air-conditioning system and support system, described changing-breadth system, telescopic system, rotary system, air-conditioning system are connected hydraulic oil container respectively by oil supply system with oil return system with support system, and form respective hydraulic circuit.Compared with prior art, the beneficial effects of the utility model are: 1) a kind of equipment can complete shovel soil or digging operation, greatly saves equipment investment cost; 2) claw place outputting power is large, adapts to harder ground condition construction; 3) corner of the centre of gyration is greater than 360 degree, and working region is large, and operating efficiency is high; 4) safer during highly difficult operation; 5) air-conditioning is established in operating room; 6) return line establishes cooling system, the application life of extension device; 7) system architecture is simple, and reliable, the opposite direction of working end need not add counterweight, alleviates Whole Equipment quality.
Description
Technical field
The utility model relates to a kind of hydraulic system, particularly relates to a kind of dual-purpose hydraulic system of digging shovel completing excavation or shovel native operation.
Background technology
Excavator and earth scraper were when operation in the past, there is following shortcoming: 1) because operating condition limits or affects by operating environment, can not normal approach operation and cause engineering to stagnate, as the operation of high slope, swamp land operation, also have the concavo-convex situation in road surface relatively more serious, or when bulk rubble is more, cause excavator to be difficult to carry out mobile operating; 2) claw of excavator is when carrying out work, when excavating harder ground, because bearing distribution is uneven, easily causes master cylinder fracture or equipment to tumble; 3) operation under hot environment, bad environments residing for operator, the temperature of hydraulic oil also can raise along with the temperature of environment and rise, and cause hose expansion and make system leakage of oil, hydraulic motor also can break down along with the rising of hydraulic fluid temperature.In addition at the scene, usually all need to carry out excavating and shovel native operation, operation noise is larger simultaneously for two equipment, after needing digging operation to come to an end when place is less, excavator exits, earth scraper charge operation, two equipment are marched into the arena in turn to add and are produced non-cutting time, have impact on duration progress; And use two equipment costs high.
Summary of the invention
The utility model provides a kind of dual-purpose hydraulic system of digging shovel, uses same equipment not only can excavate but also can shovel soil, greatly reduces cost; The shovel of digging simultaneously being equipped with this hydraulic system has good adaptive capacity to environment, and easily extensible job area, increases work efficiency, and improves working environment, improves security performance.
In order to achieve the above object, the utility model realizes by the following technical solutions:
A kind of dual-purpose hydraulic system of digging shovel, comprise hydraulic oil container, oil supply system, oil return system, changing-breadth system, telescopic system, rotary system, air-conditioning system and support system, described changing-breadth system, telescopic system, rotary system, air-conditioning system are connected hydraulic oil container respectively by oil supply system with oil return system with support system, and form respective hydraulic circuit.
Described oil supply system is made up of oil supply system one and oil supply system two, electromagnetic filter, stop valve and the oil pump composition that oil supply system one is connected by the fuel feed pump that self-hydraulic fuel tank is drawn successively with oil supply system two, wherein oil supply system one is changing-breadth system, telescopic system, rotary system and air-conditioning system fuel feeding, and oil supply system two is support system fuel feeding.
Described oil return system is made up of two the oil return pipe branch roads being connected hydraulic oil container by electromagnetism return filter, every bar oil return pipe branch road is all provided with temperature-sensing valve and cooler, the wherein oil return pipe of the connection of oil return pipe branch road changing-breadth system, telescopic system, rotary system and an air-conditioning system, another oil return pipe branch road connects the oil return pipe of support system.
Described changing-breadth system is made up of oil cylinder one, equalizing valve one and three position four-way electromagnetic valve two, 2 group oil cylinders one are connected respectively with equalizing valve one, then the meta actuator port of rear access three position four-way electromagnetic valve two in parallel, the oil-feed port of three position four-way electromagnetic valve two is connected oil supply system one and oil return system with oil return opening respectively by three-position four-way valve one.
Described telescopic system is made up of oil cylinder two, equalizing valve two and three position four-way electromagnetic valve three, and 2 group oil cylinders two are connected respectively with equalizing valve two, then accesses the meta actuator port of corresponding three position four-way electromagnetic valve three; After the oil-feed port parallel connection of 2 three position four-way electromagnetic valves three, manually two-position four way change valve is connected with the fuel feed pump before changing-breadth system, and the fuel feed pump before manual two-position four way change valve is provided with one-way throttle valve one; The oil return opening parallel connection of three position four-way electromagnetic valve three directly connects oil return system afterwards.
Described rotary system is made up of fuel tank, rotary motor, centre of gyration checking cylinder, accumulator, equalizing valve group and slewing directional control valve, the fuel feed pump of being drawn by oil supply system one is by being divided into two-way after one way valve four, the first via connects one-way throttle valve two and centre of gyration checking cylinder successively, and one-way throttle valve two connects accumulator in addition; Second tunnel is through the meta oil-feed port of damping hole access 3-position 4-way hand-operated direction valve, left position and the right position actuator port of 3-position 4-way hand-operated direction valve are connected a1 hole and the b1 hole of slewing directional control valve respectively, and 3-position 4-way manually changes the meta actuator port of valve by connecting oil return pipe after the meta of slewing directional control valve; Slewing directional control valve is made up of hydraulic control three six-way transfer valves and overflow valve two in parallel, the V1 mouth of the actuator port difference connecting balanced valve group of hydraulic control three six-way transfer valves and V2 mouth, the C1 mouth of equalizing valve group is connected rotary motor respectively with C2 mouth, and the drain tap of rotary motor connects fuel tank.
Described equalizing valve group is made up of the equalizing valve one of 2 groups of band damping holes, shuttle valve and one way valve five, and the equalizing valve one of band damping hole is in parallel, and fuel feeding end is connected by shuttle valve, and oil revolving end is respectively equipped with one way valve five.
Described air-conditioning system is made up of hydraulic motor, two-position four-way solenoid valve one and overflow valve one, two-position four-way solenoid valve one and overflow valve one in parallel with the one way valve four on rotary system fuel feed pump, the actuator port connecting fluid pressure motor of two-position four-way solenoid valve.
Described support system to be connected successively with the equalizing valve two of band damping hole by 4 group oil cylinders three, hydraulic lock and then to compose in parallel, its hydraulic circuit is connected with the actuator port of three position four-way electromagnetic valve four, and the oil-feed port of three position four-way electromagnetic valve four is connected with oil supply system two and oil return system respectively with oil return opening.
Compared with prior art, the beneficial effects of the utility model are:
1) have employed excavation and shovel native double hydraulic system, as long as replacing scraper bowl or bucket can switch between shovel soil and digging operation, a machine two kinds of purposes, save equipment investment cost greatly;
2) telescopic oil cylinder has been set up in auxiliary and claw junction, can increase the outputting power at claw place, adapts to harder ground condition construction;
3) corner of the centre of gyration is greater than 360 degree, expands working region, without dead angle work in equipment slewing area, and can need not move around, substantially increase operating efficiency;
4) set up support system, be made up of, be distributed in the surrounding of excavator four telescopic oil cylinders, the rod chamber of cylinder body connects and supports footing, stretches out and makes equipment be fixed on ground, ensure safety during highly difficult operation during high-power or hillside fields operation;
5) set up air-conditioning in operating room, increase the comfort level of operator, ensure to carry out work for a long time in the weather of sweltering heat;
6) return line establishes cooling system, can not cause leakage of oil in hot environment because oil overheating makes pipe deformation, protects each components and parts not by high temperature injury, the application life of extension device simultaneously;
7) system architecture is simple, easy to use, reliable, because the opposite direction being provided with support system working end need not add counterweight, alleviates Whole Equipment quality.
Accompanying drawing explanation
Fig. 1 is hydraulic system principle figure described in the utility model.
In figure: I. oil supply system 1. oil supply system 2 III. oil return system IV. changing-breadth system V. telescopic system VI. rotary system VII. support system VIII. air-conditioning system
1. hydraulic oil container, 2. electromagnetic filter one, 3. stop valve one, 4. oil pump one, 5. electromagnetic filter two, 6. stop valve two, 7. oil pump two, 8. electromagnetism return filter, 9. one way valve one, 10. temperature-sensing valve one, 11. coolers one, 12. one way valves two, 13. temperature-sensing valves two, 14. coolers two, 15. one way valves three, 16. three position four-way electromagnetic valves one, 17. oil cylinder 1 equalizing valves one, 19. three position four-way electromagnetic valves two, 20. one-way throttle valves one, 21. manual two-position four way change valves, 22. oil cylinders two, 23. equalizing valves two, 24. three position four-way electromagnetic valves three, 25. one way valves four, 26. overflow valves one, 27. two-position four-way solenoid valves one, 28. hydraulic motors, 29. 3-position 4-way hand-operated direction valves, 30. damping holes, 31. slewing directional control valves, 32. hydraulic control three six-way transfer valves, 33. overflow valves two, 34. fuel tanks, 35. centre of gyration checking cylinders, 36. rotary motors, 37. accumulators, 38. one-way throttle valves two, 39. equalizing valve groups, the equalizing valve one of 40. band damping holes, 41. shuttle valves, 42. one way valves five, 43. oil cylinders three, 44. hydraulic lock, the equalizing valve two of 45. band damping holes, 46. three position four-way electromagnetic valves four, 47. oil ga(u)ges, 48. air filters
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:
See Fig. 1, it is hydraulic system principle figure described in the utility model, a kind of dual-purpose hydraulic system of digging shovel of the utility model, comprise hydraulic oil container 1, oil supply system, oil return system III, changing-breadth system IV, telescopic system V, rotary system VI, air-conditioning system VIII and support system VII, described changing-breadth system IV, telescopic system V, rotary system VI, air-conditioning system VIII are connected hydraulic oil container 1 respectively by oil supply system with oil return system III with support system VII, and form respective hydraulic circuit.
Described oil supply system is made up of oil supply system 1 and oil supply system 2 II, electromagnetic filter, stop valve and the oil pump composition that oil supply system 1 is connected by the fuel feed pump that self-hydraulic fuel tank 1 is drawn successively with oil supply system 2 II, wherein oil supply system 1 is changing-breadth system IV, telescopic system V, rotary system VI and air-conditioning system VIII fuel feeding, and oil supply system 2 II is support system VII fuel feeding.
Described oil return system III is made up of two the oil return pipe branch roads being connected hydraulic oil container 1 by electromagnetism return filter 8, every bar oil return pipe branch road is all provided with temperature-sensing valve 10/13 and cooler 11/14, the wherein oil return pipe of the connection of oil return pipe branch road changing-breadth system IV, telescopic system V, rotary system VI and an air-conditioning system VIII, another oil return pipe branch road connects the oil return pipe of support system VII.
Described changing-breadth system IV is made up of oil cylinder 1, equalizing valve 1 and three position four-way electromagnetic valve 2 19,2 group oil cylinders 1 are connected respectively with equalizing valve 1, then the meta actuator port of rear access three position four-way electromagnetic valve 2 19 in parallel, the oil-feed port of three position four-way electromagnetic valve 2 19 is connected oil supply system 1 and oil return system III with oil return opening respectively by three-position four-way valve 1.
Described telescopic system V is made up of oil cylinder 2 22, equalizing valve 2 23 and three position four-way electromagnetic valve 3 24, and 2 group oil cylinders 2 22 are connected respectively with equalizing valve 2 23, then accesses the meta actuator port of corresponding three position four-way electromagnetic valve 3 24; After the oil-feed port parallel connection of 2 three position four-way electromagnetic valves 3 24, manually two-position four way change valve 21 is connected with the fuel feed pump before changing-breadth system IV, and the fuel feed pump before manual two-position four way change valve 21 is provided with one-way throttle valve 1; The oil return opening parallel connection of three position four-way electromagnetic valve 3 24 directly connects oil return system III afterwards.
Described rotary system VI is made up of fuel tank 34, rotary motor 36, centre of gyration checking cylinder 35, accumulator 37, equalizing valve group and slewing directional control valve 31, the fuel feed pump of being drawn by oil supply system 1 is by being divided into two-way after one way valve 4 25, the first via connects one-way throttle valve 2 38 and centre of gyration checking cylinder 35 successively, and one-way throttle valve 2 38 connects accumulator 37 in addition; The meta oil-feed port of 3-position 4-way hand-operated direction valve 29 is accessed through damping hole 30 in second tunnel, left position and the right position actuator port of 3-position 4-way hand-operated direction valve 29 are connected a1 hole and the b1 hole of slewing directional control valve 31 respectively, and 3-position 4-way manually changes the meta actuator port of valve 29 by connecting oil return pipe after the meta of slewing directional control valve 31; Slewing directional control valve 31 is made up of hydraulic control three six-way transfer valves 32 and overflow valve 2 33 in parallel, the V1 mouth of the actuator port difference connecting balanced valve group 39 of hydraulic control three six-way transfer valves 32 and V2 mouth, the C1 mouth of equalizing valve group 39 is connected rotary motor 36 respectively with C2 mouth, and the drain tap of rotary motor 36 connects fuel tank 34.
Described equalizing valve group 39 is made up of the equalizing valve 1 of 2 groups of band damping holes, shuttle valve 41 and one way valve 5 42, and the equalizing valve 1 of band damping hole is in parallel, and fuel feeding end is connected by shuttle valve 41, and oil revolving end is respectively equipped with one way valve 5 42.
Described air-conditioning system VIII is made up of hydraulic motor 28, two-position four-way solenoid valve 1 and overflow valve 1, two-position four-way solenoid valve 1 and overflow valve 1 in parallel with the one way valve 4 25 on rotary system VI fuel feed pump, the actuator port connecting fluid pressure motor 28 of two-position four-way solenoid valve 1.
Described support system VII is connected successively then is composed in parallel by the equalizing valve 2 45 of 4 group oil cylinders 3 43, hydraulic lock 44 and band damping hole, its hydraulic circuit is connected with the actuator port of three position four-way electromagnetic valve 4 46, and the oil-feed port of three position four-way electromagnetic valve 4 46 is connected with oil supply system 2 II and oil return system III respectively with oil return opening.
The utility model a kind of dual-purpose dig the hydraulic system of shovel operating principle and the course of work as follows:
1) hydraulic oil is by the electromagnetic filter 1 of oil supply system 1, stop valve 1, extracted out from hydraulic oil container 1 by oil pump 1, connect and be transported to one way valve 4 25, overflow valve 1 in parallel with it has the effect of the step-down when pressure is excessive, open the two-position four-way solenoid valve 1 on side, fluid enters idle call hydraulic motor 28, air-conditioning system is started working, an oil return pipe branch road of oil return system III is flowed through from the fluid of idle call hydraulic motor 28 outflow, again through one way valve 1 after temperature-sensing valve 1 and cooler 1, electromagnetism return filter 8 gets back to hydraulic oil container 1,
Fluid also directly arrives one-way throttle valve 2 38 while one way valve 4 25, and final arrival centre of gyration checking cylinder 35, its push rod backs down the piston be stuck on rotary motor 36, ensures the smooth and easy unlatching of rotary motor 36.When having oil liquid leakage in hydraulic circuit, when insufficient pressure is opened to maintain centre of gyration checking cylinder 35, ensure that centre of gyration checking cylinder 35 continuous firing by accumulator 37 release pressure.
When 3-position 4-way hand-operated direction valve 29 is opened, fluid through one way valve 4 25 has a road through damping hole 30, and a1 hole and the b1 hole of the slewing directional control valve 31 be made up of hydraulic control three six-way transfer valves 32 and overflow valve 2 33 is directly transported to through 3-position 4-way hand-operated direction valve 29, hydraulic control three six-way transfer valves 32 are opened, now promote the E1 handle of 3-position 4-way hand-operated direction valve 29, the a1 hole oil-feed of slewing directional control valve 31, and its a1 limit is worked, fluid arrives the V2 mouth of equalizing valve group 39, the equalizing valve 1 of the band damping hole in equalizing valve group 39, be transported to terminal rotary motor 36, rotary motor 36 starts to rotate forward, rotary system is started working, otherwise promote the E2 handle of 3-position 4-way hand-operated direction valve 29, rotary motor 36 rotates backward.The fluid revealed in rotary motor 36 housing directly gets back to hydraulic oil container 1; From rotary motor 36 oil return opening flow out all fluid by the C1 mouth of equalizing valve group 39, is flowed out by the V1 mouth of equalizing valve group 39, through slewing directional control valve 31, finally through oil return system III cooling after turn back to hydraulic oil container 1.As 3-position 4-way hand-operated direction valve 29 is not opened, then this road binders liquid directly arrives slewing directional control valve 31, gets back in hydraulic oil container 1 after a circulation at meta through oil return system III.
First open centre of gyration checking cylinder 35 when rotary system VI works, in order to avoid smother rotary motor 36, make rotary motor 36 impaired.
2) while hydraulic oil is sent to rotary system VI by oil supply system 1, also three position four-way electromagnetic valve 1 place has been delivered to, as three position four-way electromagnetic valve 1 is not opened, fluid directly by its meta, then gets back to hydraulic oil container 1 through one way valve 3 15 and oil return system III.When three position four-way electromagnetic valve 1 is opened, and when being switched to the right position of three position four-way electromagnetic valve 1, fluid is through equalizing valve 1, and arrive oil cylinder 1, under the drive of oil cylinder 1, principal arm starts rising movement.Fluid flows out from oil cylinder 1 rod chamber, after three position four-way electromagnetic valve 2 19 flows out, part fluid is by one-way throttle valve 1, approach three position four-way electromagnetic valve 1, one way valve 3 15, temperature-sensing valve 1, cooler 1, electromagnetism return filter 8 get back to hydraulic oil container 1, another part fluid is when manual two-position four way change valve 21 is opened, through three position four-way directional control valve 3 24, and enter oil cylinder 2 22 through equalizing valve 2 23, telescoping mechanism is started working, and the fluid of backflow is got back in hydraulic oil container 1 through oil return system III.
The oil cylinder 1 of changing-breadth system IV is placed on and digs between the principal arm of shovel and auxiliary, the oil cylinder 2 22 of telescopic system V is placed on the auxiliary and claw junction that dig shovel, changing-breadth system IV and telescopic system V are by the hydraulic circuit of each self-configuring, can meet and dig, shovel systematic position, can independently perform respective action, the system of excavating and shoveling soil is non-interference, avoids circuit confusion to cause interference, makes whole system become charge system.When excavating, oil cylinder 1 and oil cylinder 2 22 work simultaneously, when switching to forklift pattern, the oil cylinder 2 22 of auxiliary and claw junction is stopped using, bucket is fixed on principal arm, that is the utility model dual-purpose dig shovel scraper bowl and bucket need when operation to install respectively, with which, which is installed, because bucket needs action in the other direction, during amplitude oil cylinder work, oil inlet and oil return road switches to oppositely.
3) four oil cylinders 3 43 of support system VII are rotated in turntable surrounding, and oil cylinder 3 43 push rod end installs footing in addition.The hydraulic system of support system VII is relatively independent, hydraulic oil from hydraulic oil container 1 through electromagnetic filter 25, stop valve 26 arrives oil pump 27, three-position four-way electromagnetic directional valve 4 46 is transported to again by oil pump 27, when three-position four-way electromagnetic directional valve 4 46 is switched to left position, fluid is transported to the equalizing valve 2 45 of band damping hole, again in the rodless cavity that hydraulic lock 44 enters oil cylinder 3 43, the other end fluid of oil cylinder 3 43 is from rod chamber to three position four-way electromagnetic valve 4 46, through temperature-sensing valve 2 13, cooler 2 14, one way valve 2 12, again through electromagnetism return filter 8, finally turn back to hydraulic oil container 1, now supporting leg starts stretching out slowly, equipment is made firmly to be fixed on ground.
Oil ga(u)ge 47 and air filter 48 is provided with in hydraulic oil container 1.
Claims (9)
1. a dual-purpose hydraulic system of digging shovel, it is characterized in that, comprise hydraulic oil container, oil supply system, oil return system, changing-breadth system, telescopic system, rotary system, air-conditioning system and support system, described changing-breadth system, telescopic system, rotary system, air-conditioning system are connected hydraulic oil container respectively by oil supply system with oil return system with support system, and form respective hydraulic circuit.
2. a kind of dual-purpose hydraulic system of digging shovel according to claim 1, it is characterized in that, described oil supply system is made up of oil supply system one and oil supply system two, electromagnetic filter, stop valve and the oil pump composition that oil supply system one is connected by the fuel feed pump that self-hydraulic fuel tank is drawn successively with oil supply system two, wherein oil supply system one is changing-breadth system, telescopic system, rotary system and air-conditioning system fuel feeding, and oil supply system two is support system fuel feeding.
3. a kind of dual-purpose hydraulic system of digging shovel according to claim 1, it is characterized in that, described oil return system is made up of two the oil return pipe branch roads being connected hydraulic oil container by electromagnetism return filter, every bar oil return pipe branch road is all provided with temperature-sensing valve and cooler, the wherein oil return pipe of the connection of oil return pipe branch road changing-breadth system, telescopic system, rotary system and an air-conditioning system, another oil return pipe branch road connects the oil return pipe of support system.
4. a kind of dual-purpose hydraulic system of digging shovel according to claim 1, it is characterized in that, described changing-breadth system is made up of oil cylinder one, equalizing valve one and three position four-way electromagnetic valve two, 2 group oil cylinders one are connected respectively with equalizing valve one, then the meta actuator port of rear access three position four-way electromagnetic valve two in parallel, the oil-feed port of three position four-way electromagnetic valve two is connected oil supply system one and oil return system with oil return opening respectively by three-position four-way valve one.
5. a kind of dual-purpose hydraulic system of digging shovel according to claim 1, it is characterized in that, described telescopic system is made up of oil cylinder two, equalizing valve two and three position four-way electromagnetic valve three, 2 group oil cylinders two are connected respectively with equalizing valve two, then access the meta actuator port of corresponding three position four-way electromagnetic valve three; After the oil-feed port parallel connection of 2 three position four-way electromagnetic valves three, manually two-position four way change valve is connected with the fuel feed pump before changing-breadth system, and the fuel feed pump before manual two-position four way change valve is provided with one-way throttle valve one; The oil return opening parallel connection of three position four-way electromagnetic valve three directly connects oil return system afterwards.
6. a kind of dual-purpose hydraulic system of digging shovel according to claim 1, it is characterized in that, described rotary system is made up of fuel tank, rotary motor, centre of gyration checking cylinder, accumulator, equalizing valve group and slewing directional control valve, the fuel feed pump of being drawn by oil supply system one is by being divided into two-way after one way valve four, the first via connects one-way throttle valve two and centre of gyration checking cylinder successively, and one-way throttle valve two connects accumulator in addition; Second tunnel is through the meta oil-feed port of damping hole access 3-position 4-way hand-operated direction valve, left position and the right position actuator port of 3-position 4-way hand-operated direction valve are connected a1 hole and the b1 hole of slewing directional control valve respectively, and 3-position 4-way manually changes the meta actuator port of valve by connecting oil return pipe after the meta of slewing directional control valve; Slewing directional control valve is made up of hydraulic control three six-way transfer valves and overflow valve two in parallel, the V1 mouth of the actuator port difference connecting balanced valve group of hydraulic control three six-way transfer valves and V2 mouth, the C1 mouth of equalizing valve group is connected rotary motor respectively with C2 mouth, and the drain tap of rotary motor connects fuel tank.
7. a kind of dual-purpose hydraulic system of digging shovel according to claim 6, it is characterized in that, described equalizing valve group is made up of the equalizing valve one of 2 groups of band damping holes, shuttle valve and one way valve five, and the equalizing valve one of band damping hole is in parallel, fuel feeding end is connected by shuttle valve, and oil revolving end is respectively equipped with one way valve five.
8. a kind of dual-purpose hydraulic system of digging shovel according to claim 1, it is characterized in that, described air-conditioning system is made up of hydraulic motor, two-position four-way solenoid valve one and overflow valve one, two-position four-way solenoid valve one and overflow valve one in parallel with the one way valve four on rotary system fuel feed pump, the actuator port connecting fluid pressure motor of two-position four-way solenoid valve one.
9. a kind of dual-purpose hydraulic system of digging shovel according to claim 1, it is characterized in that, described support system to be connected successively with the equalizing valve two of band damping hole by 4 group oil cylinders three, hydraulic lock and then to compose in parallel, its hydraulic circuit is connected with the actuator port of three position four-way electromagnetic valve four, and the oil-feed port of three position four-way electromagnetic valve four is connected with oil supply system two and oil return system respectively with oil return opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520145726.4U CN204645141U (en) | 2015-03-13 | 2015-03-13 | A kind of dual-purpose hydraulic system of digging shovel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520145726.4U CN204645141U (en) | 2015-03-13 | 2015-03-13 | A kind of dual-purpose hydraulic system of digging shovel |
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| Publication Number | Publication Date |
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| CN204645141U true CN204645141U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520145726.4U Expired - Fee Related CN204645141U (en) | 2015-03-13 | 2015-03-13 | A kind of dual-purpose hydraulic system of digging shovel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695502A (en) * | 2015-03-13 | 2015-06-10 | 辽宁瑞丰专用车制造有限公司 | Hydraulic system of dual-purpose excavation and shoveling machine |
| CN106089826A (en) * | 2016-08-10 | 2016-11-09 | 龙工(上海)机械制造有限公司 | A kind of four in one bucket hydraulic system for wheel loader |
-
2015
- 2015-03-13 CN CN201520145726.4U patent/CN204645141U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695502A (en) * | 2015-03-13 | 2015-06-10 | 辽宁瑞丰专用车制造有限公司 | Hydraulic system of dual-purpose excavation and shoveling machine |
| CN104695502B (en) * | 2015-03-13 | 2017-04-19 | 辽宁瑞丰专用车制造有限公司 | Hydraulic system of dual-purpose excavation and shoveling machine |
| CN106089826A (en) * | 2016-08-10 | 2016-11-09 | 龙工(上海)机械制造有限公司 | A kind of four in one bucket hydraulic system for wheel loader |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20180313 |
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| CF01 | Termination of patent right due to non-payment of annual fee |