CN105041768B - A kind of mining hydraulic medium displacement hydraulic cylinder with pressure - Google Patents
A kind of mining hydraulic medium displacement hydraulic cylinder with pressure Download PDFInfo
- Publication number
- CN105041768B CN105041768B CN201510535720.2A CN201510535720A CN105041768B CN 105041768 B CN105041768 B CN 105041768B CN 201510535720 A CN201510535720 A CN 201510535720A CN 105041768 B CN105041768 B CN 105041768B
- Authority
- CN
- China
- Prior art keywords
- rod chamber
- rodless cavity
- hydraulic cylinder
- interface
- liquid interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention relates to the mining hydraulic medium displacement hydraulic cylinder with pressure of one kind, the hydraulic cylinder has cylinder body (2), the piston (3) in cylinder body (2) and is joined together with piston (3) and stretches out the outside piston rod of cylinder body (2), and the space in cylinder body (2) is divided into rodless cavity part and rod chamber part by piston (3)；Rodless cavity being provided with rodless cavity part and controlling liquid interface (8), being provided with rod chamber in rod chamber part controls liquid interface (7), liquid feeding pipeline to control liquid interface to be connected with rod chamber part by rod chamber；Be additionally provided with the piston rod respectively with the partially communicating rodless cavity leakage fluid dram (5) of rodless cavity and with the partially communicating rod chamber discharge opeing interface (6) of rod chamber.Present invention also offers a kind of method of replacing of cylinder hydraulic medium.Working solution in displacement rod chamber part with pressure and rodless cavity part can be realized using technical scheme, the purpose for changing " stagnant water " in hydraulic cylinder is reached, so as to prevent or delay the corrosion of hydraulic cylinder.
Description
Technical field
The present invention relates to Hydraulic Field, and in particular to a kind of mining hydraulic medium displacement hydraulic cylinder with pressure.
Background technology
The pillar of down-hole mining working face is one of equipment essential in ore deposit, the middle support apparatus for using in China's ore deposit
There are the multiple structural forms such as wooden prop, elemental metals friction prop, hydraulic prop and double telescopic suspension supporting columns.In recent years,
With the continuous developmental research of engineers and technicians and practice, support technology has a great development, and progressively tends to perfect, wood
Pillar has been rarely employed, and elemental metals friction prop is small and uneven because of its setting load, and perseverance increases resistance drop away from cannot also ensure
Without.Hydraulic prop is the new generation product developed after elemental metals friction prop, at present popularization and application
More than 30 years, hydraulic prop is provided with triple-use valve, the pressure for being supplied the default emulsion station of working face by triple-use valve
Liquid injection pillar hydraulic cylinder carries out just support, when top board is pressed and is unloaded, emulsion is gushed by triple-use valve, and pillar declines,
During repeated work, then just support is carried out with the pressure fluid at emulsion station, circulated successively.
Hydraulic prop is used for the place of the face roof supportings such as underground coal mine coal mining, constructing tunnel and heading end supporting,
Its main material is the alloy such as iron, steel to be fabricated by by the mode such as forging, because of 1) underground coal mine bad environments, coal-face
Big with tunnel relative humidity, typically 75% or so, the equipment for using is chronically in moist, perishable environment；2) because of colliery
Forced ventilation, underground oxygen supply is sufficient, and the toxic and harmfuls such as SO2, H2S, CO2, dust and gas are often contained in air；3)
Water-quality constituents is complicated, and substantial amounts of K+, Na+, Fe2+, Fe3+ cation and Cl, SO4 anion are contained in water quality, and its corrosivity is broken
It is bad relevant with the water quality of underground coal mine.Dissolving salt containing higher concentration in mine water, it is a kind of strong electrolyte, equipment
Long-term use makes stanchions face produce electrochemical corrosion in the environment such as darkness, humidity, easily, oxidation is caused, so that part
Structure or overall structure are corroded, therefore need periodically to carry out preservative treatment to pillar, not only increase manpower, are also wasted substantial amounts of
Time and money.
In order to prevent the corrosion of hydraulic cylinder, numerous engineers and technicians are made that very big effort.CN102852537A is public
A kind of nickel-titanium alloy web membrane technology of single hydraulic prop for mine is opened, has been comprised the following steps：1st, for the outside of live post body, liquid
The surfaces such as the inner face of cylinder pressure, first carry out polishing grinding, remove the dust and greasy dirt of surfaces externally and internally；2nd, by Nitinol pipe it is bushing in
The outside of live post body, the inner face of hydraulic pressure cylinder assembly；3 } and then in the inside of the inside of live post body, hydraulic pressure cylinder assembly high pressure is injected
Water, makes its compression swelling high fit；4th, composite precision working process is carried out to compound cross-section through cold-drawn machine；5th, above-mentioned four step is obtained
Semi-finished product carry out floating boring and rolling Compound Machining again, using floating boring, rolling, make Nitinol pipe compound with 27SiMn steel pipes as one
Body etc..CN101403310 discloses a kind of corrosion-resistant single-body hydraulic supporter, its use hydraulic pressure cylinder surfaces, damaged surface living with
And the left and right valve cylinder surface of triple-use valve is coated with the mode of pvc coating to prevent the corrosion of hydraulic cylinder.
CN201802416U discloses a kind of mining anticorrosion single hydraulic prop, and it is used in hydraulic pressure cylinder assembly surface, live post component table
Face, the left and right valve surface of triple-use valve use composite stainless steel technology, and its outer surface is coated with polyvinyl chloride, polyurethane coating, leads to
Supercooling pressure casting, so that water, oxygen-barrier in the surface metal of part and air, reach permanent etch-proof work
With.CN103573740A then discloses a kind of antirust solution pressure cylinder, and it is taken and set on the piston rod antirust cylinder, in antirust cylinder
Mode equipped with antirust oil, it is to avoid piston rod gets rusty, corrodes, so that the normal work of effective guarantee hydraulic cylinder.
But, due to the hydraulic prop that domestic mine industry is used, it is substantial amounts of with emulsion (MDT oil emulsions and
Water is with 5：95 are formulated, used as transmission pillar medium.Although above-mentioned technology is prevented or has delayed hydraulic cylinder to a certain extent
Corrosion, but, above-mentioned technical matters is complicated, increased manufacturing cost；And, emulsion can be greatly increased after long-term use
The possibility of corrosion.
The content of the invention
The technical problems to be solved by the invention, aiming above the deficiencies in the prior art, and provide a kind of mining band
Pressure hydraulic medium displacement hydraulic cylinder.
The purpose of the present invention is realized by following technical scheme：A kind of mining hydraulic medium displacement hydraulic pressure with pressure
Cylinder, the hydraulic cylinder has cylinder body 2, the piston 3 in cylinder body 2 and joins the work stretched out outside cylinder body 2 together with piston 3
Stopper rod, the space in cylinder body 2 is divided into rodless cavity part and rod chamber part by piston 3；Rodless cavity control is provided with rodless cavity part
Liquid interface processed 8, rod chamber control liquid interface 7 is provided with rod chamber part, and liquid feeding pipeline is controlled liquid interface and had by rod chamber
Rod cavity part connects；Be additionally provided with the piston rod respectively with the partially communicating rodless cavity leakage fluid dram 5 of rodless cavity and with rod chamber portion
Divide the rod chamber discharge opeing interface 6 of connection.
Rodless cavity relief valve connection 1 is provided with rodless cavity part, safety valve passes through rodless cavity relief valve connection 1 and rodless cavity
Part connects；Rod chamber relief valve connection 4 is provided with rod chamber part, safety valve passes through rod chamber relief valve connection 4 and has bar
Cavity segment is connected.
The rodless cavity leakage fluid dram 5 and rod chamber discharge opeing interface 6 are connected with a sequence valve respectively.
The Opening pressure of the sequence valve is 25MPa.
Connect the rodless cavity apocenosis passage of rodless cavity part and rodless cavity leakage fluid dram 5 and connect rod chamber part and have bar
The rod chamber apocenosis passage of chamber discharge opeing interface 6 is drilling.
The bottom of the rod chamber apocenosis passage is provided with a plug.
The plug is connected through a screw thread with the rod chamber apocenosis passage.
In addition, present invention also offers a kind of method for replacing hydraulic cylinder hydraulic medium, comprising the following steps：
The rodless cavity control feed liquor of liquid interface 8 is opened, rod chamber control liquid interface 7 is closed, and by the row of rodless cavity leakage fluid dram 5
Liquid；And
The rod chamber control feed liquor of liquid interface 7 is opened, rodless cavity control liquid interface 8 is closed, and by rod chamber discharge opeing interface 6
Discharge opeing.
Working solution in displacement rod chamber part with pressure and rodless cavity part can be realized using technical scheme,
The purpose for changing " stagnant water " in hydraulic cylinder is reached, so as to prevent or delay the corrosion of hydraulic cylinder.Reach column oil cylinder and balance
The antirust purpose of oil cylinder, is of relatively low cost, and full water hydraulic system is developed to future, solves " stagnant water " to support key oil cylinder
Etching problem has very great help.
Brief description of the drawings
Fig. 1 is the hydraulic cylinder of prior art；
Fig. 2 is the structural representation that the mining hydraulic medium with pressure of the present invention replaces hydraulic cylinder working condition.
Wherein, 1 is rodless cavity relief valve connection, and 2 is cylinder body, and 3 is piston, and 4 is rod chamber relief valve connection, and 5 is without bar
Chamber leakage fluid dram, 6 is rod chamber discharge opeing interface, and 7 is rod chamber control liquid interface, and 8 is rodless cavity control liquid interface.
Specific embodiment
For the technical characterstic for illustrating the present invention program can be understood, with reference to specific embodiment, and its accompanying drawing is combined, to this
Utility model is illustrated.
As shown in figure 1, the hydraulic cylinder of prior art includes cylinder body 2, the piston 3 in cylinder body 2 and is unified into piston 3
The piston rod integrally stretched out outside cylinder body 2, the space in cylinder body 2 is divided into rodless cavity part and rod chamber part by piston 3.In nothing
Rod cavity part is provided with rodless cavity relief valve connection 1 and rodless cavity control liquid interface 8, and safety valve (not shown) passes through rodless cavity
Relief valve connection 1 is connected with rodless cavity part, and liquid feeding pipeline controls liquid interface to be connected with rodless cavity part by rodless cavity；Equally
Ground, rod chamber relief valve connection 4 and rod chamber control liquid interface 7 are provided with rod chamber part, and safety valve (not shown) is led to
Cross rod chamber relief valve connection 4 to be connected with rod chamber part, liquid feeding pipeline controls liquid interface and rod chamber part by rod chamber
Connection.
When oil cylinder normally stretches out, liquid interface feed liquor is controlled by 8 rodless cavities, control liquid interface to return liquid by 7 rod chambers, made
3 pistons are with respect to 2 cylinder bodies to right side motion in figure.
When oil cylinder is normally retracted, liquid interface feed liquor is controlled by 7 rod chambers, control liquid interface to return liquid by 8 rodless cavities, made
3 pistons are with respect to 2 cylinder bodies to left side motion in figure.
Due to hydraulic support particular job environment, the balancing cylinder most of the time is in non-action state, causes internal work
Make liquid (emulsion) to go bad, further speed up oil cylinder and go bad.
As shown in Fig. 2 hydraulic cylinder of the invention is like the prior art, equally there is cylinder body 2, the work in cylinder body 2
Fill in 3 and join the piston rod stretched out outside cylinder body 2 together with piston 3, the space in cylinder body 2 is divided into rodless cavity portion by piston 3
Divide and rod chamber part.Rodless cavity relief valve connection 1 and rodless cavity control liquid interface 8, safety valve (figure are provided with rodless cavity part
Not shown in) be connected with rodless cavity part by rodless cavity relief valve connection 1, liquid feeding pipeline by rodless cavity control liquid interface with
Rodless cavity part connects；Similarly, rod chamber relief valve connection 4 and rod chamber control liquid interface 7, peace are provided with rod chamber part
Full valve (not shown) is connected by rod chamber relief valve connection 4 with rod chamber part, and liquid feeding pipeline is by rod chamber control
Liquid interface is connected with rod chamber part.
Hydraulic cylinder of the invention be additionally provided with the piston rod respectively with the partially communicating rodless cavity leakage fluid dram 5 of rodless cavity and with
The partially communicating rod chamber discharge opeing interface 6 of rod chamber.Rodless cavity leakage fluid dram 5 and rod chamber discharge opeing interface 6 respectively with an order
Valve (not shown) is connected.For ease of processing, rodless cavity leakage fluid dram 5 and rod chamber discharge opeing interface 6 are drilling, rod chamber row
The bottom of liquid passage is provided with a plug, and the plug can be combined using all known modes with rod chamber apocenosis passage, example
As being threadedly coupled.
During work, when realizing that rodless cavity controls 8 feed liquor of liquid interface by hydraulic valve, rod chamber control liquid interface 7 is closed,
And by the discharge opeing of rodless cavity leakage fluid dram 5, and the sequence valve being connected with rodless cavity leakage fluid dram 5 can keep the pressure in rodless cavity
Power, so as to realize the working solution in displacement rodless cavity part with pressure.Similarly, realize that rod chamber controls liquid interface by hydraulic valve
During 7 feed liquor, close rodless cavity control liquid interface 8, and by the discharge opeing of rod chamber discharge opeing interface 6, and with the phase of rod chamber discharge opeing interface 6
The sequence valve of connection can keep the pressure in rod chamber part, so as to realize the working solution in displacement rod chamber part with pressure.
Preferably, an Opening pressure is connected respectively on a 25MPa left sides in rod chamber discharge opeing interface 6 and rodless cavity leakage fluid dram 5
Right sequence valve, so can guarantee that the normal work of hydraulic cylinder, that is, ensure that two cavity pressures are not less than 25MPa, can reach again
Change the purpose of " stagnant water " in hydraulic cylinder, and can guarantee that to have cleaned and shield sequence valve again, with ensure hydraulic cylinder safety valve just
Often work.
Claims (7)
1. a kind of mining hydraulic medium with pressure replaces hydraulic cylinder, and the hydraulic cylinder has cylinder body (2), the work in cylinder body (2)
Fill in (3) and joined together with piston (3) and stretch out the outside piston rod of cylinder body (2), the space in cylinder body (2) is by piston (3) point
Into rodless cavity part and rod chamber part；Rodless cavity is provided with rodless cavity part and controls liquid interface (8), be provided with rod chamber part
Rod chamber controls liquid interface (7), liquid feeding pipeline to control liquid interface to be connected with rod chamber part by rod chamber；
Characterized in that, be additionally provided with the piston rod respectively with the partially communicating rodless cavity leakage fluid dram (5) of rodless cavity and with have bar
Rod chamber discharge opeing interface (6) of cavity segment connection, the rodless cavity leakage fluid dram (5) and rod chamber discharge opeing interface (6) are respectively with one
Individual sequence valve connection.
2. hydraulic cylinder according to claim 1, it is characterised in that be provided with rodless cavity relief valve connection in rodless cavity part
(1), safety valve is connected by rodless cavity relief valve connection (1) with rodless cavity part；Rod chamber safety is provided with rod chamber part
Valve interface (4), safety valve is connected by rod chamber relief valve connection (4) with rod chamber part.
3. hydraulic cylinder according to claim 1, it is characterised in that the Opening pressure of the sequence valve is 25MPa.
4. hydraulic cylinder according to claim 1, it is characterised in that connection rodless cavity part and rodless cavity leakage fluid dram (5)
Rodless cavity apocenosis passage and the rod chamber apocenosis passage of connection rod chamber part and rod chamber discharge opeing interface (6) are drilling.
5. hydraulic cylinder according to claim 4, it is characterised in that the bottom of the rod chamber apocenosis passage is provided with and blocks up
Head.
6. hydraulic cylinder according to claim 5, it is characterised in that the plug passes through spiral shell with the rod chamber apocenosis passage
Line is connected.
7. a kind of method for replacing the cylinder hydraulic medium as described in one of claim 1-6, comprises the following steps：
Rodless cavity control liquid interface (8) feed liquor is opened, rod chamber is closed and is controlled liquid interface (7), and by rodless cavity leakage fluid dram (5)
Discharge opeing；And
Rod chamber control liquid interface (7) feed liquor is opened, rodless cavity is closed and is controlled liquid interface (8), and by rod chamber discharge opeing interface
(6) discharge opeing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510535720.2A CN105041768B (en) | 2015-08-27 | 2015-08-27 | A kind of mining hydraulic medium displacement hydraulic cylinder with pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510535720.2A CN105041768B (en) | 2015-08-27 | 2015-08-27 | A kind of mining hydraulic medium displacement hydraulic cylinder with pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105041768A CN105041768A (en) | 2015-11-11 |
| CN105041768B true CN105041768B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510535720.2A Expired - Fee Related CN105041768B (en) | 2015-08-27 | 2015-08-27 | A kind of mining hydraulic medium displacement hydraulic cylinder with pressure |
Country Status (1)
| Country | Link |
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| CN (1) | CN105041768B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105679262B (en) | 2016-01-12 | 2017-08-29 | 京东方科技集团股份有限公司 | Shift register and its driving method, gate driving circuit and display device |
| CN106195261B (en) * | 2016-08-30 | 2018-05-01 | 四川悦安重工机械装备有限公司 | A kind of hollow piston bar assembly for preventing pollution hydraulic oil |
| CN106593988B (en) * | 2017-01-25 | 2018-09-25 | 宁波海天金属成型设备有限公司 | A kind of oil-returning structure of injection oil cylinder |
| CN108952787B (en) * | 2018-07-10 | 2020-11-06 | 郑州煤矿机械集团股份有限公司 | Hydraulic support upright post with internal circulation medium replacement function |
| CN113417633A (en) * | 2021-08-24 | 2021-09-21 | 三一重型装备有限公司 | Mining apparatus |
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| CN205136199U (en) * | 2015-08-27 | 2016-04-06 | 三一重型装备有限公司 | Hydraulic medium replacement pneumatic cylinder is pressed in mining area |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3478879B2 (en) * | 1994-10-14 | 2003-12-15 | 内田油圧機器工業株式会社 | Hydraulic cylinder dust remover |
| JP3814525B2 (en) * | 2001-11-29 | 2006-08-30 | カヤバ工業株式会社 | Hydraulic cylinder |
-
2015
- 2015-08-27 CN CN201510535720.2A patent/CN105041768B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3943717A (en) * | 1974-01-07 | 1976-03-16 | Caterpillar Tractor Co. | Contaminant removal from a hydraulic cylinder |
| CN201547054U (en) * | 2009-11-13 | 2010-08-11 | 福建三钢闽光股份有限公司 | Hydraulic cylinder capable of removing oil stains |
| CN202125481U (en) * | 2011-01-11 | 2012-01-25 | 洛阳锐腾机械设备有限公司 | Circuit used to quickly replace contaminated oil in master cylinder of servo system |
| CN202946476U (en) * | 2012-11-20 | 2013-05-22 | 中冶南方工程技术有限公司 | Hydraulic cylinder capable of being online and automatically cleaned |
| CN104653547A (en) * | 2015-02-15 | 2015-05-27 | 常州海宏液压设备有限公司 | Self-cleaning silt-resistant durable active drag head hydraulic oil cylinder |
| CN104747710A (en) * | 2015-03-30 | 2015-07-01 | 中国有色(沈阳)泵业有限公司 | High-pressure diaphragm pump piston rod and washing system using piston rod |
| CN205136199U (en) * | 2015-08-27 | 2016-04-06 | 三一重型装备有限公司 | Hydraulic medium replacement pneumatic cylinder is pressed in mining area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105041768A (en) | 2015-11-11 |
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| CB03 | Change of inventor or designer information |
Inventor after: Liu Wendong Inventor after: Shang Xinzhi Inventor after: Li Jianguang Inventor before: Yu Yang Inventor before: Shang Xinzhi Inventor before: Li Fu |
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| TR01 | Transfer of patent right |
Effective date of registration: 20181116 Address after: 110027 25 development road, Shenyang economic and Technological Development Zone, Liaoning Co-patentee after: China Shenhua Energy Co Shendong coal Co. Patentee after: Sany Heavy Equipment Co.,Ltd. Address before: 110027 No. 31, Yan se Hu Street, Shenyang economic and Technological Development Zone, Liaoning Patentee before: Sany Heavy Equipment Co.,Ltd. |
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Granted publication date: 20170616 Termination date: 20200827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |