CN203230677U - Automatic oil supplementing system of closed hydraulic cargo winch - Google Patents
Automatic oil supplementing system of closed hydraulic cargo winch Download PDFInfo
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- CN203230677U CN203230677U CN 201320126930 CN201320126930U CN203230677U CN 203230677 U CN203230677 U CN 203230677U CN 201320126930 CN201320126930 CN 201320126930 CN 201320126930 U CN201320126930 U CN 201320126930U CN 203230677 U CN203230677 U CN 203230677U
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- pump
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- 230000001502 supplementing effect Effects 0.000 title abstract 5
- 239000012530 fluid Substances 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000013589 supplement Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 56
- 238000005265 energy consumption Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to an automatic oil supplementing system of a closed hydraulic cargo winch. The automatic oil supplementing system comprises a first oil return path and a second oil return path of a pump, wherein the first oil return path and the second oil return path are connected with a three-position four-way reversing valve and an oil filter. The automatic oil supplementing system is characterized in that the first port of the oil filter is connected with a pressurized oil tank, the second port of the oil filter is simultaneously connected onto the first port of a first one-way valve on the first oil return path of the pump and the first port of a second one-way valve on the second oil return path of the pump, the second port of the first one-way valve is simultaneously connected with a first oil mouth of a fixed displacement pump and an oil inlet of the three-position four-way reversing valve, and the second port of the second one-way valve is simultaneously connected with a second oil mouth of the bi-directional fixed displacement pump and an oil return port of the three-position four-way reversing valve. Compared with the prior art, the automatic oil supplementing system is simple in structure, good in reliability, small in maintenance working amount, good in energy-saving and consumption-reducing effects and high in economical efficiency, adopts the one-way valves to perform oil supplement and does not consume additional energy.
Description
Technical field
The utility model relates to hydraulic equipment, specifically refers to the automatic oil-supplementing system of a kind of Closed Hydraulic winch.
Background technique
At present, most of hydraulic cargo winch are made up of hydraulic pressure auxiliary elements such as oil hydraulic pump, hydraulic control valve, oil hydraulic cylinder (or oil hydraulic motor), fuel tank, oil purifiers.The goods of hydraulic cargo winch hoists or lands and realized by three position four-way directional control valve; The speed of goods motion speed is relevant with the flow that enters oil hydraulic motor or oil hydraulic cylinder, specifically can adopt throttle grverning or volumetric speed control; For avoiding hypervelocity to weigh down goods, the speed of goods landing is controlled by one-way throttle valve or one way sequence valve; The braking of goods can adopt hydraulic way, machinery type or The combined to realize; The voltage-limiting protection of hydraulic system is realized by relief valve.
Hydraulic cargo winch adopts the advantage of closed type hydraulic system: can not realize energy feedback in the time of can not producing extra restriction loss, goods landing during speed governing, require the Economy of not too high and system high to the oil hydraulic pump self-priming performance.But also exist variable reversible pump structure and whole system form complicated, radiating condition is poor, the higher auxilliary pump that causes leakages, repairing of oil liquid pressure need consume energy and the fluid leakage causes shortcomings such as the lower and cargo movement speed of return pressure reduces gradually.
Summary of the invention
Technical problem to be solved in the utility model be the present situation at prior art provide a kind of energy consumption low, can be according to return pressure size repairing and the stable automatic oil-supplementing system of Closed Hydraulic winch of goods rising or falling speed automatically.
The utility model solves the problems of the technologies described above the technological scheme that adopts: the automatic oil-supplementing system of this Closed Hydraulic winch, comprise first way to cycle oil of the pump that connects three position four-way directional control valve and oil purifier and second way to cycle oil of pump, first port that it is characterized in that described oil purifier connects pressurized reservoir, second port of described oil purifier connects first port of first one-way valve on first way to cycle oil that is arranged on described pump simultaneously and is arranged on first port of second one-way valve on second way to cycle oil of described pump, second port of described first one-way valve connects first hydraulic fluid port of metering pump and the filler opening of described three position four-way directional control valve simultaneously, and second port of described second one-way valve connects second hydraulic fluid port of described two-way metering pump and the return opening of described three position four-way directional control valve simultaneously.
One-way valve in the such scheme can use the one-way valve of arbitrary structures of the prior art, preferably, described first one-way valve comprises valve body, is arranged on taper valve core, spring and adjusting bolt in the described valve body, wherein said spring is between described taper valve core and described adjusting bolt, and the outer end of described adjusting bolt exposes to described valve body; Described second one-way valve is identical with the structure of described first one-way valve.In this scheme, can be by changing the spring of varying strength, or clockwise or rotate counterclockwise the adjusting bolt, can obtain one-way valve different open valve pressure, thereby realize different return pressures, in order to satisfy winch or the different need of work of winch of different size.
As the improvement of such scheme, also be provided with first stop valve between described first one-way valve and the described oil purifier, also be provided with second stop valve between described second one-way valve and the described oil purifier.Before and after two-way metering pump, stop valve is set, can carries out maintaining to two-way metering pump according to operating time or working state, avoid waste and the befouling environment of hydraulic oil.
Preferably, described motor connects the power input shaft of described two-way metering pump by coupling.
Described three position four-way directional control valve is preferably the M type.
Compared with prior art, the utility model connects one-way valve successively on the design by two-way metering pump and two hydraulic fluid ports at two-way metering pump, stop valve, oil purifier and pressurized reservoir, it can be according to the size of the return opening pressure of two-way metering pump, by the pressurized reservoir pressure oil output, carry out automatic repairing through another filter and another one-way valve, thereby the return pressure of avoiding fluid to reveal causing is lower and shortcoming that cargo movement speed that cause reduces gradually, and this system forms simple in structure, system reliability is good, the maintaining workload is few, and adopt the one-way valve repairing, do not consume extra energy, energy conservation and consumption reduction effects is good, the Economy height of system.
Description of drawings
Fig. 1 uses the plane structure schematic representation of state for the utility model embodiment;
Fig. 2 is the cross-sectional schematic of first, second one-way valve among the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the automatic oil-supplementing system of this Closed Hydraulic winch comprises second way to cycle oil 4, two-way metering pump 5, three position four-way directional control valve 6, first way to cycle oil 7 of oil hydraulic motor, second way to cycle oil 8 and the oil hydraulic motor 9 of oil hydraulic motor of first way to cycle oil 3, the pump of pressurized reservoir 1, oil purifier 2, pump.
Wherein, first port of oil purifier 2 connects the hydraulic fluid port of pressurized reservoir 1, and second port of oil purifier connects first port of first stop valve 31 on first way to cycle oil 3 that is arranged on pump simultaneously and is arranged on first port of second stop valve 41 on second way to cycle oil 4 of pump.Second port of first stop valve connects first port of first one-way valve 32 on first way to cycle oil that is arranged on pump, and second port of first one-way valve 32 connects first hydraulic fluid port of two-way metering pump 5 and the filler opening of three position four-way directional control valve 6 simultaneously.Second port of second stop valve connects first port of second one-way valve 42 on second way to cycle oil 4 that is arranged on pump; Second port of second one-way valve 42 connects second hydraulic fluid port of two-way metering pump 5 and the oil outlet of three position four-way directional control valve 6 simultaneously.
The power input shaft of two-way metering pump 5 connects the pto of motor 11 by coupling 10.
Three position four-way directional control valve 6 in the present embodiment is M type three position four-way directional control valve, and first actuator port of this three position four-way directional control valve connects first port of first hydraulic fluid port of oil hydraulic motor 9, first relief valve 12 and second port of second relief valve 13 simultaneously; Second actuator port of this three position four-way directional control valve 6 connects second hydraulic fluid port of oil hydraulic motor, second port of first relief valve 12 and first port of second relief valve 13 simultaneously, and namely oil hydraulic motor 9, first relief valve 12 and second relief valve 13 are connected in parallel.
The structure of employed first one-way valve 32 is described below in the present embodiment:
It comprises valve body 321, be provided with valve pocket 325 in the valve body, the receiving hole 328 that valve body is provided with the oil inlet passage 326 that is connected with valve pocket 325 and oil discharge passage 327 and is used for putting spring 323, be provided with taper valve core 322, spring 323 in the valve pocket 325 and regulate bolt 324 and be arranged in the receiving hole 328, spring 323 is between taper valve core 322 and adjusting bolt 324, and the outer end of regulating bolt 324 exposes to valve body.
Second one-way valve 42 is identical with the structure of first one-way valve 32.
The working principle of the automatic oil-supplementing system of this Closed Hydraulic winch is as follows:
The switch of motor 11 closes, M type three position four-way directional control valve 6 is placed right position, two-way metering pump 5 work of motor driving, the pressure oil that two-way metering pump is discharged enters oil hydraulic motor 9 through 6 right of first way to cycle oil 3, the three position four-way directional control valves of pump, first way to cycle oil 7 of oil hydraulic motor successively, oil hydraulic motor turns clockwise under the effect of pressure oil, goods G rises, and three position four-way directional control valve 6 places meta when goods G rises to the precalculated position, and goods G stops to rise.
M type three position four-way directional control valve 6 is placed position, a left side, two-way metering pump 5 work of motor driving, the pressure oil that two-way metering pump 5 is discharged enters oil hydraulic motor 9 through 6 left of second way to cycle oil 4, the three position four-way directional control valves of pump, second way to cycle oil 8 of oil hydraulic motor successively, oil hydraulic motor is rotated counterclockwise under the effect of pressure oil, goods G descends, three position four-way directional control valve 6 places meta when goods G drops to the precalculated position, and goods G stops to descend.
As required, M type three position four-way directional control valve is placed meta, can be braking after the goods ascending, descending in any position.
When the return pressure of two-way metering pump drops to the critical value of setting, first or second stop valve is opened, and realizes the automatic repairing of Closed Hydraulic winch system.
In the working procedure, when the pressure of the hydraulic oil of two one-way valve taper valve core epicoeles reaches when opening the valve force value, the taper valve core of one-way valve is opened, and automatic repairing is carried out in the oil return of oil hydraulic pump, avoids the oil hydraulic pump return pressure low excessively, influences the work of winch.
Regulate the shrinkage degree that bolt changes spring by rotating, can change the breakout pressure of one-way valve, with winch or the different job requirement of same winch of adaptive different size.
Claims (5)
1. automatic oil-supplementing system of Closed Hydraulic winch, comprise first way to cycle oil of the pump that connects three position four-way directional control valve and oil purifier and second way to cycle oil of pump, first port that it is characterized in that described oil purifier connects pressurized reservoir, second port of described oil purifier connects first port of first one-way valve on first way to cycle oil that is arranged on described pump simultaneously and is arranged on first port of second one-way valve on second way to cycle oil of described pump, second port of described first one-way valve connects first hydraulic fluid port of metering pump and the filler opening of described three position four-way directional control valve simultaneously, and second port of described second one-way valve connects second hydraulic fluid port of described two-way metering pump and the return opening of described three position four-way directional control valve simultaneously.
2. the automatic oil-supplementing system of Closed Hydraulic winch according to claim 1, it is characterized in that described first one-way valve comprises valve body, is arranged on taper valve core, spring and adjusting bolt in the described valve body, wherein said spring is between described taper valve core and described adjusting bolt, and the outer end of described adjusting bolt exposes to described valve body; Described second one-way valve is identical with the structure of described first one-way valve.
3. the automatic oil-supplementing system of Closed Hydraulic winch according to claim 1 and 2 is characterized in that also being provided with first stop valve between described first one-way valve and the described oil purifier, also is provided with second stop valve between described second one-way valve and the described oil purifier.
4. the automatic oil-supplementing system of Closed Hydraulic winch according to claim 3 is characterized in that described motor connects the power input shaft of described two-way metering pump by coupling.
5. the automatic oil-supplementing system of Closed Hydraulic winch according to claim 3 is characterized in that described three position four-way directional control valve is the M type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126930 CN203230677U (en) | 2013-03-19 | 2013-03-19 | Automatic oil supplementing system of closed hydraulic cargo winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126930 CN203230677U (en) | 2013-03-19 | 2013-03-19 | Automatic oil supplementing system of closed hydraulic cargo winch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230677U true CN203230677U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320126930 Expired - Fee Related CN203230677U (en) | 2013-03-19 | 2013-03-19 | Automatic oil supplementing system of closed hydraulic cargo winch |
Country Status (1)
| Country | Link |
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| CN (1) | CN203230677U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803302A (en) * | 2015-04-17 | 2015-07-29 | 南通航运职业技术学院 | Frequency conversion type hydraulic cargo winch |
| CN105952699A (en) * | 2016-06-30 | 2016-09-21 | 张家港市艾罗执行器有限公司 | Dual-power gear pump control type driving mechanism of electrohydraulic actuator |
| CN108644160A (en) * | 2018-08-03 | 2018-10-12 | 西安科技大学 | A kind of overflow valve dynamic characteristic improvement device |
-
2013
- 2013-03-19 CN CN 201320126930 patent/CN203230677U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803302A (en) * | 2015-04-17 | 2015-07-29 | 南通航运职业技术学院 | Frequency conversion type hydraulic cargo winch |
| CN105952699A (en) * | 2016-06-30 | 2016-09-21 | 张家港市艾罗执行器有限公司 | Dual-power gear pump control type driving mechanism of electrohydraulic actuator |
| CN108644160A (en) * | 2018-08-03 | 2018-10-12 | 西安科技大学 | A kind of overflow valve dynamic characteristic improvement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140319 |