CN204985118U - A area pressure circulating device and hydraulic support for hydro -cylinder is anticorrosive - Google Patents
A area pressure circulating device and hydraulic support for hydro -cylinder is anticorrosive Download PDFInfo
- Publication number
- CN204985118U CN204985118U CN201520654669.2U CN201520654669U CN204985118U CN 204985118 U CN204985118 U CN 204985118U CN 201520654669 U CN201520654669 U CN 201520654669U CN 204985118 U CN204985118 U CN 204985118U
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- Prior art keywords
- pipeline
- valve
- auxiliary system
- cylinder
- hydro
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- Withdrawn - After Issue
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- Fluid-Pressure Circuits (AREA)
- Check Valves (AREA)
Abstract
The utility model provides an anticorrosive area of hydro -cylinder is pressed circulating device and is contained the device's hydraulic support, and the device is arranged in the anticorrosive of among coal trade equipment hydraulic support hydro -cylinder, and piston among the the device is divided into cavity I and cavity II with the working chamber of hydro -cylinder, and cavity I is connected with and makes the auxiliary system of working medium circulation flow, this auxiliary system can guarantee the hydraulic pressure force of this hydro -cylinder output, and this auxiliary system includes pipeline L3 and pipeline L4, and one end and this cavity I of this pipeline L3 and pipeline L4 are connected, and the other end is connected with switching -over valve I, is provided with sequence valve, check valve and hydraulically controlled check valve on this pipeline L3 or pipeline L4, and hydraulically controlled check valve and check valve setting are on the pipeline of difference, the principle of its utilization " running water never becomes putrid " makes working medium regularly circulate to effectively avoiding the medium rotten, preventing effectively that the hydro -cylinder from corroding, just can make the auxiliary system during operation guarantee formerly is that the setting load is not influenced, thereby guarantees the security of system.
Description
Technical field
The utility model relates to the hydraulic support in coal industry equipment, is specifically related to the anticorrosion of oil cylinder in hydraulic support.
Background technique
Hydraulic support in coal industry equipment adopts water-based hydraulic jack, and its working medium is water-based emulsified liquid (5% oil emulsion, 95% water mixes).Because working medium is water-based, cause the easy rust corrosion of hydraulic jack internal surface.The more important thing is, found by research, in hydraulic support equipment all there is the long-term immobilising present situation of interior media emulsified liquid in most important two oil cylinder columns and balancing cylinder.Because medium does not flow for a long time, medium is caused to go bad, thus accelerated corrosion oil cylinder, cause oil cylinder to get rusty and lose loss of function.To be solution the be cylinder tube inwall adopted at present extensively and the outer wall coating of piston rod or other surface treatment methods increase oil cylinder surface anticorrosion performance.Adopt coating or other surface treatment methods higher to technological requirement, coming off or wear phenomenon often appears in coating, can not simple and effective solution oil cylinder corrosion-resistant problem.
Model utility content
The purpose of this utility model is for the deficiencies in the prior art, there is provided a kind of for oil cylinder corrosion-resistant circulation means with pressure and the hydraulic support containing this circulation means with pressure, in order to solve oil cylinder owing to being in half trip state for a long time, internal water matrix solution is caused to circulate and to go bad, to the problem making oil cylinder inner surface accelerated corrosion.
To achieve these goals, the technical solution of the utility model is: a kind of for oil cylinder corrosion-resistant circulation means with pressure, described oil cylinder has work chamber, there is in described work chamber piston and working medium, work chamber is divided into chamber I and chamber II by described piston, described chamber I is connected with the auxiliary system that the described working medium in described chamber I can be made to circulate, and described auxiliary system can ensure the hydraulic coupling that described oil cylinder exports.
Further improvement is: described auxiliary system comprises pipeline L3 and pipeline L4, and described pipeline L3 is connected with described chamber I with one end of pipeline L4, and the other end is connected with selector valve I.
Further improvement is: described auxiliary system also comprises sequence valve, and described sequence valve is arranged on described pipeline L3 or pipeline L4.
Further improvement is: described auxiliary system also comprises the one-way valve be arranged on pipeline L3 or pipeline L4.
Further improvement is: described auxiliary system also comprises the Pilot operated check valve be arranged on described pipeline L3 or pipeline L4, and described Pilot operated check valve and described one-way valve are arranged on different pipelines.
Further improvement is: described device also comprises pipeline L1 and pipeline L2, and described pipeline L1 is connected with described oil cylinder with pipeline L2 one end, and the other end is connected with selector valve II, and described pipeline L1 or pipeline L2 is provided with safety valve.
Further improvement is: described selector valve I is two position and four-way reversing valves, and described selector valve II is three position four-way directional control valve.
A kind of hydraulic support, described hydraulic support contains above-mentioned circulation means with pressure.
Compared with prior art, it utilizes the principle of " Running water never becomes putrid " to the utility model, by increasing another outer circuits on oil cylinder, being controlled, make working medium periodic cyclic by hydrovalve, thus effectively avoids medium to go bad, and effectively prevents oil cylinder from corroding; And by arranging sequence valve, one-way valve, Pilot operated check valve, when auxiliary system is worked, ensure that former system setting pressure is unaffected, thus ensure security of system.
Accompanying drawing explanation
Accompanying drawing 1 is the overall schematic for oil cylinder corrosion-resistant circulation means with pressure.
Embodiment
As shown in Figure 1, for oil cylinder corrosion-resistant circulation means with pressure primarily of 1-selector valve II, 2-safety valve, 3-oil cylinder, 4-one-way valve, 5-Pilot operated check valve 6-sequence valve, 7-selector valve I, and pipeline L1, L2, L3 and L4 composition.
If the oil cylinder 3 in Fig. 1 is column or balancing cylinder, working medium is that the conventional working medium in related domain is as water-based emulsified liquid (5% oil emulsion, 95% water mixes), selector valve I can be two position and four-way reversing valves, selector valve II can be three position four-way directional control valve, the work chamber of oil cylinder 3 is divided into left and right Liang Ge work chamber by piston, the left side is chamber I, the right is chamber II, in-oil cylinder working medium long inactivity is caused when oil cylinder does not work for a long time, or when cylinder efficient, piston only carries out short stroke motion, the B of oil cylinder as shown in FIG. 1, motion in short stroke between C 2, thus cause the working medium in chamber II to obtain proper flow, and the working medium in chamber I can not normally be circulated with system flow.
By being connected with the auxiliary system that the described working medium in described chamber I can be made to circulate with chamber I, described auxiliary system can ensure the hydraulic coupling that described oil cylinder exports.Described auxiliary system comprises: pipeline L3, pipeline L4, and 4-one-way valve 5-Pilot operated check valve 6-sequence valve 7-selector valve I, pipeline L3 is connected chamber I with one end of pipeline L4, the other end is connected with two position and four-way reversing valves, sequence valve is arranged on described pipeline L3 or pipeline L4, sequence valve in Fig. 1 is arranged on pipeline L4, and pipeline L3 or pipeline L4 are also provided with one-way valve, and the one-way valve in Fig. 1 is arranged on pipeline L3; Pipeline L3 or pipeline L4 are also provided with Pilot operated check valve, and described Pilot operated check valve and described one-way valve are arranged on different pipelines, namely when arranging one-way valve on pipeline L3, then on pipeline L4, arrange Pilot operated check valve; When arranging one-way valve on pipeline L4, then Pilot operated check valve is set on pipeline L3; In order to give oil cylinder 3 fuel feeding, be also provided with pipeline L1 and pipeline L2, pipeline L1 is connected with oil cylinder with one end of pipeline L2, and the other end is connected with three position four-way directional control valve, and pipeline L1 or pipeline L2 are also provided with safety valve 2;
By regularly two position and four-way reversing valves being opened, pipeline L3 and pipeline L4 is also connected with oil sources to provide oil pressure in the lower end of two position and four-way reversing valves, when flowing into hydraulic oil in pipeline L3, to open one-way valve 4 makes pipeline L3 be communicated with, because the oil circuit control K being arranged on the Pilot operated check valve 5 on pipeline L4 is connected to pipeline L3, now also Pilot operated check valve 5 will be opened, thus connecting pipeline L4, finally make the working medium in chamber I be able to Efficient Cycle, thus avoid oil cylinder to corrode.Because hydraulic support plays safety effect at underground coal mine, the effect arranging 6-sequence valve is when opening 7-two position and four-way reversing valve, the effective keeping system working resistance of working medium in system, the effect arranging 4-one-way valve and 5-Pilot operated check valve is that when making closedown 7-two position and four-way reversing valve, auxiliary system and the original system of increase are effectively isolated.
Last it is noted that the foregoing is only preferred embodiment of the present utility model; be not limited to the utility model; for a person skilled in the art; it still can regulate the technological scheme described in aforesaid embodiment; or equivalent replacement is carried out to wherein portion of techniques feature; all do within spirit of the present utility model and principle amendment, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. one kind for oil cylinder corrosion-resistant circulation means with pressure, described oil cylinder has work chamber, there is in described work chamber piston and working medium, work chamber is divided into chamber I and chamber II by described piston, it is characterized in that: described chamber I is connected with the auxiliary system that the described working medium in described chamber I can be made to circulate, described auxiliary system can ensure the hydraulic coupling that described oil cylinder exports.
2. circulation means with pressure according to claim 1, is characterized in that: described auxiliary system comprises pipeline L3 and pipeline L4, and described pipeline L3 is connected with described chamber I with one end of pipeline L4, and the other end is connected with selector valve I.
3. circulation means with pressure according to claim 2, is characterized in that, described auxiliary system also comprises sequence valve, and described sequence valve is arranged on described pipeline L3 or pipeline L4.
4. the circulation means with pressure according to Claims 2 or 3, is characterized in that: described auxiliary system also comprises the one-way valve be arranged on pipeline L3 or pipeline L4.
5. circulation means with pressure according to claim 4, is characterized in that: described auxiliary system also comprises the Pilot operated check valve be arranged on described pipeline L3 or pipeline L4, and described Pilot operated check valve and described one-way valve are arranged on different pipelines.
6. circulation means with pressure according to claim 5, it is characterized in that: described circulation means with pressure also comprises pipeline L1 and pipeline L2, described pipeline L1 is connected with described oil cylinder with pipeline L2 one end, and the other end is connected with selector valve II, and described pipeline L1 or pipeline L2 is provided with safety valve.
7. circulation means with pressure according to claim 6, is characterized in that: described selector valve I is two position and four-way reversing valves, and described selector valve II is three position four-way directional control valve.
8. a hydraulic support, is characterized in that: described hydraulic support contains the circulation means with pressure according to any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654669.2U CN204985118U (en) | 2015-08-27 | 2015-08-27 | A area pressure circulating device and hydraulic support for hydro -cylinder is anticorrosive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654669.2U CN204985118U (en) | 2015-08-27 | 2015-08-27 | A area pressure circulating device and hydraulic support for hydro -cylinder is anticorrosive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985118U true CN204985118U (en) | 2016-01-20 |
Family
ID=55119492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520654669.2U Withdrawn - After Issue CN204985118U (en) | 2015-08-27 | 2015-08-27 | A area pressure circulating device and hydraulic support for hydro -cylinder is anticorrosive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041747A (en) * | 2015-08-27 | 2015-11-11 | 三一重型装备有限公司 | Circulating device with pressure for oil cylinder corrosion prevention and hydraulic support |
-
2015
- 2015-08-27 CN CN201520654669.2U patent/CN204985118U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041747A (en) * | 2015-08-27 | 2015-11-11 | 三一重型装备有限公司 | Circulating device with pressure for oil cylinder corrosion prevention and hydraulic support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Zhende Inventor after: Chang Di Inventor after: Li Jianguang Inventor before: Yu Yang Inventor before: Liu Shichao Inventor before: Chang Di |
|
| COR | Change of bibliographic data | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160120 Effective date of abandoning: 20171003 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160120 Effective date of abandoning: 20171003 |