CN102777437A - Guide hydraulic control system with oil changing function - Google Patents
Guide hydraulic control system with oil changing function Download PDFInfo
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- CN102777437A CN102777437A CN2012102631748A CN201210263174A CN102777437A CN 102777437 A CN102777437 A CN 102777437A CN 2012102631748 A CN2012102631748 A CN 2012102631748A CN 201210263174 A CN201210263174 A CN 201210263174A CN 102777437 A CN102777437 A CN 102777437A
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Abstract
The invention relates to a guide hydraulic control system with oil changing function, which is aimed at solving the problem of long preheating time in the existing guide hydraulic control oil line. The guide hydraulic control system comprises a guide control valve, a change valve and an oil-changing oil line; an opening 1 of the guide control valve is connected with an Xa oil chamber of the change valve through a left pipeline; an opening 2 of the guide control valve is connected with an Xb oil chamber through a right pipeline; the oil-changing oil line comprises a one-way valve unit and an oil-changing inlet; the one-way valve unit comprises two one-way valves; oil inlets of the one-way valves are communicated with each other and then is communicated with the oil-changing inlet; an oil outlet of one one-way valve in the one-way valve unit is communicated with the left pipeline; and an oil outlet of the other one-way valve is communicated with a right pipeline. According to the guide hydraulic control system, preheated hydraulic oil for hydraulic oil in the guide control pipeline can be replaced through the oil-changing oil line during preheating a machine, so that preheating efficiency can be improved, and preheating time can be shortened.
Description
Technical field
The present invention relates to a kind of hydraulic control system, relate in particular to a kind of guide's hydraulic control system with the function of changing oil.
Background technique
For hydraulically powered equipment, all be through pilot-actuated valve drive controlling selector valve usually, through the action realization hydraulic work device motion control of selector valve.Hydraulically Operated Equipment during operation, because hydraulic oil viscosity is big, can cause the relevant action of Hydraulically Operated Equipment to produce retardation phenomenon, the personal safety that possibly jeopardize the workmen at the operation initial stage under the cold climate environment.Generally speaking; The operator of Hydraulically Operated Equipment is for slowing down the action retardation phenomenon; Usually need be behind the motor that starts the machine; Through hydraulic jack is built the pressure for a long time so that the temperature rise of the hydraulic oil of control loop oil, thereby reduce hydraulic pressure oil viscosity in the control loop, make machine reach normal working state.And the hydraulic oil in the oil circuit between pilot-actuated valve and the selector valve and extraneous exchange are seldom, and the temperature that therefore improves hydraulic oil through the mode that builds the pressure often needs for a long time, and efficiency of heat engine is very low.
Summary of the invention
The technical problem that the present invention will solve is to be difficult to provide on the problem of preheating a kind of guide's of shortening hydraulic oil guide's hydraulic control system of preheat time to the hydraulic oil between pilot-actuated valve and the selector valve in existing guide's hydraulic control system.
The technological scheme that the present invention adopts is: construct a kind of guide's hydraulic control system with the function of changing oil; This system comprises pilot-actuated valve, selector valve, the oil circuit of changing oil; 1 mouthful of pilot-actuated valve is connected with the Xa oil pocket of selector valve through left pipeline, and 2 mouthfuls of pilot-actuated valve are passed through right pipeline and are connected with the Xb oil pocket of selector valve, and the oil circuit of changing oil comprises the one-way valve group and the filler opening of changing oil; The one-way valve group comprises two one-way valves; After being interconnected, the filler opening of one-way valve is communicated with the oil outlet of an one-way valve in the one-way valve group and left pipeline connection, the oil outlet of another one-way valve and right pipeline connection with the filler opening of changing oil; The filler opening of changing oil is communicated with a pressure oil-source, and the pressure of pressure oil-source is higher than the pressure in guide's hydraulic control system return line.In guide's hydraulic control system among the present invention when carrying out hot machine; Pilot-actuated valve is in meta; The hydraulic oil that the oil circuit of changing oil is introduced through preheating enters into left pipeline and right pipeline, makes that the hydraulic oil in left pipeline and the right pipeline enters into return line from 1 mouthful of pilot-actuated valve and 2 mouthfuls, oil return T mouth, makes that the hydraulic oil in left pipeline and the right pipeline is replaced by the hydraulic oil of preheating; Thereby improved the preheating efficient of hydraulic system, shortened preheat time.
In foregoing invention, the oil circuit of changing oil also comprises closes or the conducting oil circuit switch valve of changing oil, and switch valve is connected between the filler opening of change oil filler opening and one-way valve group.After preheating is accomplished, but off switch valve and block the oil circuit of changing oil, thus reduce the oil circuit of changing oil to the influence of guide's control oil channel, also reduce the energy loss that the oil circuit of changing oil causes simultaneously.Switch valve is a kind of in solenoid valve, hand switch valve, the hydraulic control switch valve.
In foregoing invention, the oil circuit of changing oil also comprises a flow controller, and flow controller is connected on changes oil between filler opening and the switch valve.Because the hydraulic pressure oil mass in the pipeline of the left and right sides seldom; Only need a spot of preheating hydraulic oil just can it be replaced; In the oil circuit of changing oil, flow controller is set, can be so that the oil circuit of changing oil directly obtains preheating oil from the high-pressure oil passage of hydraulic system and can not cause too much hydraulic oil through causing unnecessary loss because of the high pressure of preheating oil.
In foregoing invention, the oil circuit of changing oil also comprises a filter, and filter is connected on changes oil between filler opening and the flow controller.Filter can prevent that other impurity from entering into guide's control oil channel and influencing guide's control system.
In the present invention; The filler opening of changing oil can be communicated with the pressure oil-source that any pressure is higher than pilot-actuated valve oil return T mouth pressure; For example with guide's hydraulic control system in the fuel-displaced pipeline connection of pioneer pump, the oil circuit of changing oil from pioneer pump, obtain the preheating oil sources or from main hydraulic system the hydraulic pipe line before the return oil pressure valve be communicated with; Main hydraulic system is the hydraulic system to other oil-receiving device fuel feeding such as equipment, traveling gears, and the pressure before the return oil pressure valve in the pipeline is higher than the pressure of the oil return T mouth of pilot-actuated valve, can be used as the pressure oil-source of changing oil.
In foregoing invention, the tie point on change oil oil circuit and left pipeline, the right pipeline is respectively near the Xa oil pocket and the Xb oil pocket of selector valve.Thereby improve the replacement rate of hydraulic oil in the pipeline of the left and right sides, improve preheating efficient.
Guide's hydraulic control system of the present invention compared with prior art can be used by the hydraulic oil of preheating the hydraulic oil in guide's pilot line through the oil circuit of changing oil when hot machine and replace, and improves preheating efficient, shortens preheat time.
Description of drawings
Fig. 1 is first kind of guide's hydraulic control system schematic diagram of the present invention;
Fig. 2 is the embodiment 1 that the present invention uses in the hydraulic system in hydraulic shovel;
Fig. 3 is the embodiment 2 that the present invention uses in the hydraulic system in hydraulic shovel;
Reference character:
Pilot-actuated valve 2, one-way valve group 1, the first one-way valve 1a, the second one-way valve 1b, selector valve 3, left pipeline 4, right pipeline 5, flow controller 6, solenoid valve 7, filter 8, pump group 9, return oil pressure valve 10.
Embodiment
Below in conjunction with the description of drawings specific embodiments.
Embodiment 1
Fig. 1 shows guide's hydraulic control system schematic diagram of the present invention.As shown in Figure 1; 1 mouthful of pilot-actuated valve 2 is passed through left pipeline 4 and is connected with the Xa oil pocket of selector valve 3; 2 mouthfuls of pilot-actuated valve 2 are passed through right pipeline 5 and are connected with the Xb oil pocket of selector valve 3; The oil circuit of changing oil comprises one-way valve group 1 and changes oil filler opening A that one-way valve group 1 comprises two one-way valve 1a, 1b, is communicated with the filler opening A that changes oil after the filler opening of one-way valve 1a, 1b is interconnected; The oil outlet CK2 of an one-way valve 1a in the one-way valve group is communicated with left pipeline 4, and the oil outlet CK1 of another one-way valve 1b is communicated with right pipeline 5.In guide's hydraulic control system among the present invention when carrying out hot machine; Pilot-actuated valve is in meta; The hydraulic oil that the filler opening of oil circuit of changing oil is introduced through preheating enters into left pipeline 4 and right pipeline 5, makes that the hydraulic oil in left pipeline 4 and the right pipeline 5 enters into the hydraulic oil container loop from 1 mouthful of pilot-actuated valve and 2 mouthfuls, T mouth, makes that the hydraulic oil in left pipeline and the right pipeline is replaced by the hydraulic oil of preheating; Thereby improved the preheating efficient of hydraulic system, shortened preheat time.
Embodiment 2
Fig. 2 shows the application of guide's hydraulic control system of the present invention on hydraulic shovel; As shown in Figure 2; In hydraulic shovel,, used guide's hydraulic control system of two groups of identical parallel connections, in the oil circuit of changing oil for stable and safety; The one-way valve group comprises four one-way valves; Connect two groups of left and right sides pipelines in guide's control system respectively, behind connect successively after the filler opening of each one-way valve is interconnected in the one-way valve group flow controller 6, solenoid valve 7 and the filter 8, the oil inlet P of changing oil is obtained the preheating oil sources through the fuel-displaced pipeline connection of pioneer pump P3 in pipeline and the pump group 9.
Embodiment 3
Fig. 3 shows the other a kind of application of guide's hydraulic control system of the present invention on hydraulic shovel, and is as shown in Figure 3, and different with embodiment 2 is, and change oil main oil returns before oil inlet P and the return oil pressure valve 10 are communicated with and obtain the preheating oil sources.
Claims (8)
1. guide's hydraulic control system with the function of changing oil; Comprise pilot-actuated valve, selector valve, 1 mouthful of said pilot-actuated valve is connected with the Xa oil pocket of selector valve through left pipeline, and 2 mouthfuls of said pilot-actuated valve are passed through right pipeline and are connected with the Xb oil pocket of selector valve; It is characterized in that also comprising the oil circuit of changing oil; The said oil circuit of changing oil comprises the one-way valve group and changes oil filler opening that said one-way valve group comprises two one-way valves, is communicated with the filler opening of changing oil after the filler opening of said one-way valve is interconnected; The oil outlet of an one-way valve in the one-way valve group and said left pipeline connection, the oil outlet of another one-way valve and right pipeline connection.
2. guide's hydraulic control system according to claim 1 is characterized in that the said oil circuit of changing oil also comprises to close or the change oil switch valve of oil circuit of conducting that said switch valve is connected between the filler opening of change oil filler opening and one-way valve group.
3. guide's hydraulic control system according to claim 2 is characterized in that said switch valve is a kind of in solenoid valve, hand switch valve, the hydraulic control switch valve.
4. guide's hydraulic control system according to claim 2 is characterized in that the said oil circuit of changing oil also comprises a flow controller, and said flow controller is connected on changes oil between filler opening and the switch valve.
5. guide's hydraulic control system according to claim 4 is characterized in that the said oil circuit of changing oil also comprises a filter, and said filter is connected on changes oil between filler opening and the flow controller.
6. according to each described guide's hydraulic control system in the claim 1 to 5, it is characterized in that also comprising the pump group, the fuel-displaced pipeline of the pioneer pump in the said pump group with said change oil filler opening be communicated with.
7. according to each described guide's hydraulic control system in the claim 1 to 5, it is characterized in that also comprising main hydraulic system, the hydraulic pipe line in said change oil oil-feed interface and the said main hydraulic system before the return oil pressure valve is communicated with.
8. according to each described guide's hydraulic control system in the claim 1 to 5, it is characterized in that tie point on said change oil oil circuit and left pipeline, the right pipeline is respectively near the Xa oil pocket and the Xb oil pocket of selector valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102631748A CN102777437A (en) | 2012-07-27 | 2012-07-27 | Guide hydraulic control system with oil changing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102631748A CN102777437A (en) | 2012-07-27 | 2012-07-27 | Guide hydraulic control system with oil changing function |
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| Publication Number | Publication Date |
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| CN102777437A true CN102777437A (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102631748A Pending CN102777437A (en) | 2012-07-27 | 2012-07-27 | Guide hydraulic control system with oil changing function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832416A (en) * | 2012-11-26 | 2014-06-04 | 柳州柳工挖掘机有限公司 | Rotation braking energy reuse device for hydraulic machines |
| CN107269630A (en) * | 2017-07-28 | 2017-10-20 | 新兴铸管股份有限公司 | A kind of hydraulic station oil changing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000074011A (en) * | 1997-09-04 | 2000-03-07 | Yutani Heavy Ind Ltd | Warming-up operation device for hydraulic work machine |
| JP2003184827A (en) * | 2001-12-19 | 2003-07-03 | Komatsu Ltd | Warming-up unit of hydraulic pilot circuit |
| WO2012086695A1 (en) * | 2010-12-21 | 2012-06-28 | 株式会社小松製作所 | Pipe layer and warm-up method for pipe layer |
-
2012
- 2012-07-27 CN CN2012102631748A patent/CN102777437A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000074011A (en) * | 1997-09-04 | 2000-03-07 | Yutani Heavy Ind Ltd | Warming-up operation device for hydraulic work machine |
| JP2003184827A (en) * | 2001-12-19 | 2003-07-03 | Komatsu Ltd | Warming-up unit of hydraulic pilot circuit |
| WO2012086695A1 (en) * | 2010-12-21 | 2012-06-28 | 株式会社小松製作所 | Pipe layer and warm-up method for pipe layer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103832416A (en) * | 2012-11-26 | 2014-06-04 | 柳州柳工挖掘机有限公司 | Rotation braking energy reuse device for hydraulic machines |
| CN103832416B (en) * | 2012-11-26 | 2016-03-02 | 柳州柳工挖掘机有限公司 | Hydraulic machinery rotary braking energy reuse device |
| CN107269630A (en) * | 2017-07-28 | 2017-10-20 | 新兴铸管股份有限公司 | A kind of hydraulic station oil changing device |
| CN107269630B (en) * | 2017-07-28 | 2019-02-19 | 新兴铸管股份有限公司 | A kind of hydraulic station oil changing device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Pull the the Liujiang River city Liuzhou County town Shuangyong road 545100 the Guangxi Zhuang Autonomous Region Applicant after: Liugong Machinery Co., Ltd. Applicant after: LIUGONG CHANGZHOU MACHINERY CO., LTD. Applicant after: Guangxi Liugong Machinery Co., Ltd. Address before: Pull the the Liujiang River city Liuzhou County town Shuangyong road 545100 the Guangxi Zhuang Autonomous Region Applicant before: Liugong Machinery Co., Ltd. Applicant before: Liugong Changzhou Excvavtor Co., Ltd. Applicant before: Guangxi Liugong Machinery Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121114 |