CN105757042A - Anticorrosion single-action hydraulic cylinder - Google Patents
Anticorrosion single-action hydraulic cylinder Download PDFInfo
- Publication number
- CN105757042A CN105757042A CN201610291182.1A CN201610291182A CN105757042A CN 105757042 A CN105757042 A CN 105757042A CN 201610291182 A CN201610291182 A CN 201610291182A CN 105757042 A CN105757042 A CN 105757042A
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- CN
- China
- Prior art keywords
- piston
- hydraulic cylinder
- rodless cavity
- action hydraulic
- rod
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- 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
- F15B15/1476—Special return means
-
- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
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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 invention discloses an anticorrosion single-action hydraulic cylinder which comprises a cylinder barrel, a cylinder head, a piston and a piston rod, wherein the inner cavity of the cylinder barrel is partitioned into a rodless cavity and a rod cavity by the piston; a one-way valve for controlling the rodless cavity and the rod cavity to be communicated or blocked is arranged on the piston; the inlet of the one-way valve is communicated with the rod cavity; the outlet of the one-way valve is communicated with the rodless cavity. As the piston is provided with the one-way valve, and a certain amount of hydraulic oil is charged into the rod cavity before use, in the working process of the anticorrosion single-action hydraulic cylinder, when the piston is pushed to move, an oil-gas mixture inside the rod cavity can enter the rodless cavity through the one-way valve, and then the service efficiency of the hydraulic cylinder can be improved; when the piston is returned, the one-way valve stops reversely, negative pressure is formed in the rod cavity and the hydraulic oil is atomized, then under the protection of oil mist, the anticorrosion single-action hydraulic cylinder can be prevented from rusting when not used for a long time; moreover, when restarted, the anticorrosion single-action hydraulic cylinder can crawl stably, and part of potential energy can be recycled, so that the energy can be saved.
Description
Technical field
The present invention relates to a kind of anticorrosion single-action hydraulic cylinder.
Background technology
Hydraulic cylinder can be divided into single-action hydraulic cylinder and double acting hydraulic cylinder by action mode.Wherein the internal structure of single-action hydraulic cylinder is fairly simple, generally comprises cylinder barrel, cylinder head, piston and piston rod, and the inner chamber of cylinder barrel is divided into rodless cavity and rod chamber by described piston.Single-action hydraulic cylinder can only provide Unidirectional acting force, needs to rely on External Force Acting during retraction, such as adopt and internal diameter of cylinder big plunger very nearly the same single-action hydraulic cylinder and with the piston type single-action hydraulic cylinder of steam vent.
The rod chamber of above two single-action hydraulic cylinder, owing to not having hydraulic oil, therefore gets rusty easily when not using for a long time, poor reliability, it is necessary to periodic maintenance, and use cost is high.
Summary of the invention
The technical problem to be solved is to provide a kind of simple in construction, easily fabricated, anticorrosion single-action hydraulic cylinder that work efficiency is high.
In order to solve above-mentioned technical problem, the present invention adopts the following technical scheme that a kind of anticorrosion single-action hydraulic cylinder, including cylinder barrel, cylinder head, piston and piston rod, the inner chamber of cylinder barrel is divided into rodless cavity and rod chamber by described piston, described piston is provided with and controls connection and the check valve blocked between rodless cavity and rod chamber, and rod chamber is led in the import of described check valve, rodless cavity is led in outlet.
Further, the shoe cream room that described piston rod is provided with, described shoe cream room connects with rod chamber.
Further, described piston is provided with the installing hole for installing check valve, and described installing hole connects with shoe cream room and rodless cavity.
Further, described check valve includes valve pocket, spool, elastic component and block, described spool, elastic component and block are successively set in valve pocket along the inlet side of valve pocket to the side, direction exported, under the elastic force effect of elastic component, spool is formed to seal with valve pocket and coordinates, and is blocked between rodless cavity and rod chamber, and spool overcomes the elastic force effect of elastic component to move to the outlet side of valve pocket, the sealing that spool is formed with valve pocket coordinates disappearance, is connected between rodless cavity and rod chamber.
Further, the sealing that described spool is formed with valve pocket coordinates to seal for taper surface and coordinates.
Further, described cylinder head is provided with the fuel feed hole connected with rodless cavity.
Further, described piston and piston rod thread are connected.
The invention have the benefit that
The present invention is provided with check valve on piston, and in rod chamber, inject a certain amount of hydraulic oil before use, so in the work process of the present invention, when promoting piston to move, gas mixture in rod chamber will pass through check valve and enters rodless cavity, the service efficiency of hydraulic cylinder can be improved, during piston reset, check valve check, form negative pressure in rod chamber and make hydraulic oil be atomized, under the corrosion-resisting function of mist of oil, corrosion can will not be there is in the present invention when not using for a long time, improve the reliability of hydraulic pump, and when the present invention restarts, can steadily without creeping, and recovery section potential energy, save energy；It addition, present configuration is simple, easily fabricated, existing equipment is changed little, it is not necessary to use big plunger, save material greatly, economic and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Being labeled as of each parts in accompanying drawing: 1 cylinder barrel, 2 cylinder heads, 21 fuel feed holes, 3 pistons, 31 installing holes, 32 cylindrical bosses, 321 oil ducts, 4 piston rods, 41 shoe cream rooms, 42 oil-through holes, 51 valve pockets, 52 spools, 53 elastic components, 54 blocks, 6 cylinder sleeves, 7 throttle orifices, a rodless cavity, b rod chamber.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
Referring to Fig. 1.
Anticorrosion single-action hydraulic cylinder of the present invention, including cylinder barrel 1, cylinder head 2, piston 3 and piston rod 4, the inner chamber of cylinder barrel 1 is divided into rodless cavity a and rod chamber b by described piston 3, described piston 3 is provided with and controls connection and the check valve blocked between rodless cavity a and rod chamber b, and rod chamber b is led in the import of described check valve, rodless cavity a is led in outlet.
The present invention before use, first injects hydraulic oil in rod chamber b, and hydraulic oil can not fill (regulating, general 200cc) according to cylinder diameter, it is necessary to assure rod chamber b has a certain amount of air, for forming negative pressure when hydraulic cylinder resets；
The present invention is operationally, hydraulic oil enters rodless cavity a and promotes piston 3 to move, and along with the movement of piston 3, pressure in rod chamber b is gradually increased, when the pressure in rod chamber b arrives a timing, check valve is opened, connect between rodless cavity a and rod chamber b, gas mixture in rod chamber b will pass through check valve and enters rodless cavity a, also rodless cavity a can be entered due to the hydraulic oil in rod chamber b, result in the hydraulic oil flow quantitative change actually entering a in rodless cavity big, thus adding the operating rate of hydraulic cylinder, improve the service efficiency of hydraulic cylinder；When piston 3 resets, the pressure in rod chamber b reduces, due to the non-return effect of check valve, check valve closes, it is blocked between rodless cavity a and rod chamber b so that in rod chamber b, form negative pressure, and under the effect of negative pressure, hydraulic oil in rod chamber b is atomized, so, when the present invention is not when using for a long time, owing to there is mist of oil in rod chamber b, serving etch-proof effect, therefore will not there is corrosion in cylinder barrel 1；It addition, when the present invention runs again, owing to there is negative pressure in rod chamber b so that the present invention can start when lower than existing single-action hydraulic cylinder pressure, thus having reclaimed part potential energy.
In one embodiment of the present of invention, the fuel feed hole 21 connected with rodless cavity a is arranged on cylinder head 2.
In one embodiment of the present of invention, described piston 3 is connected with piston rod 4 threaded engagement.This connected mode is easy to dismounting, and certain present invention can also adopt other connected mode, such as welding.
In one embodiment of the present of invention, the shoe cream room 41 that described piston rod 4 is provided with, described shoe cream room 41 connects with rod chamber b, and described piston 3 is provided with the installing hole 31 for installing check valve, and described installing hole 31 connects with shoe cream room 41 and rodless cavity a.The import of such check valve leads to rod chamber b by shoe cream room 41, running to during away from cylinder head 2 position at piston 3, hydraulic oil and portion gas effectively can be stored in its intracavity by shoe cream room 41, improve hydraulic oil amount of storage, and preventing vacuum excessive, it is ensured that piston rod can reset smoothly.
In specifically implementing, in the side of the close piston rod 4 of piston 3, cylindrical boss 32 is set, this cylindrical boss 32 stretches into piston rod 4 and piston rod 4 threaded engagement, this cylindrical boss 32 has oil duct 321, installing hole 31 is connected with shoe cream room 41 by oil duct 321, and shoe cream room 41 is connected with rod chamber b by the oil-through hole 42 being arranged on piston rod 4；Described piston rod 4 is provided with, with close piston 3 position of cylindrical boss 32, the throttle orifice 7 connected with oil duct 321, so, when piston rod 4 runs and is blocked by cylinder sleeve 6 to oil-through hole 42 thereon, gas mixture in rod chamber b can enter rodless cavity a by throttle orifice 7, oil duct 321, check valve, reaches cushioning effect.
In one embodiment of the present of invention, referring to Fig. 2, described check valve includes valve pocket 51, spool 52, elastic component 53 and block 54, described spool 52, elastic component 53 and block 54 are successively set in valve pocket 51 along the inlet side (diagram right side) of valve pocket 51 to the direction of outlet side (diagram left side), under the elastic force effect of elastic component 53, spool 52 is formed to seal with valve pocket 51 and coordinates, it is blocked between rodless cavity a and rod chamber b, spool 52 overcomes the elastic force effect of elastic component 53 to move to outlet side, the sealing that spool 52 is formed with valve pocket 51 coordinates disappearance, connected between rodless cavity a and rod chamber b.This one-way valve structures is simple, easy to use, it is easy to adjust.
In one embodiment of the present of invention, referring to Fig. 2, the right-hand member end of described spool 52 is vertebra platform shape, and under the elastic force effect of elastic component 53, the end in vertebra platform shape of this spool 52 forms taper surface sealing and coordinates with valve pocket 51.It is higher that taper surface seals the compatible degree coordinated, and sealing effectiveness is better；
Spool 52 is the hollow structure of one end open, other end closing, and its open end is to elastic component 53, and block 54 is circulus, elastic component 53 generally selects spring, spool 52 is stretched in its one end, and the other end stretches into block 54, so ensure that its elastic force is uniform, stable；The outer surface of spool 52 is close to its right-hand member end and is provided with the ring-shaped step of indent, this ring-shaped step is provided with the rank through hole 521 communicated with spool 52 inner chamber, spool 52 seals with valve pocket 51 formation when coordinating, the part on the right side of spool 52 that is positioned at of this rank through hole 521 and valve pocket 1 inner chamber is blocked, when the sealing that spool 52 is formed with valve pocket 51 coordinates disappearance, this rank through hole 521 connects with the part on the right side of spool 52 that is positioned at of valve pocket 1 inner chamber, and one-way valve opens is connected between rodless cavity a and rod chamber b.
Certainly, the present invention can also select the check valve of other version, is not limited with above-mentioned.
Being to be understood that example as herein described and embodiment are only for illustrating, those skilled in the art can make various amendment or change according to it, when without departing from spirit of the invention, broadly falls into protection scope of the present invention.
Claims (7)
1. an anticorrosion single-action hydraulic cylinder, including cylinder barrel (1), cylinder head (2), piston (3) and piston rod (4), the inner chamber of cylinder barrel (1) is divided into rodless cavity (a) and rod chamber (b) by described piston (3), it is characterized in that: described piston (3) is provided with and controls connection and the check valve blocked between rodless cavity (a) and rod chamber (b), and rod chamber (b) is led in the import of described check valve, rodless cavity (a) is led in outlet.
2. anticorrosion single-action hydraulic cylinder as claimed in claim 1, it is characterised in that: the shoe cream room (41) that described piston rod (4) is provided with, described shoe cream room (41) connects with rod chamber (b).
3. anticorrosion single-action hydraulic cylinder as claimed in claim 2, it is characterized in that: described piston (3) is provided with the installing hole (31) for installing check valve, and described installing hole (31) connects with shoe cream room (41) and rodless cavity (a).
4. the anticorrosion single-action hydraulic cylinder as described in claim 1 or 2 or 3, it is characterized in that: described check valve includes valve pocket (51), spool (52), elastic component (53) and block (54), described spool (52), elastic component (53) and block (54) are successively set in valve pocket (51) along the inlet side of valve pocket (51) to the direction of outlet side, under the elastic force effect of elastic component (53), spool (52) is formed to seal with valve pocket (51) and coordinates, it is blocked between rodless cavity (a) and rod chamber (b), spool (52) overcomes the elastic force effect of elastic component (53) to move to the outlet side of valve pocket (51), the sealing that spool (52) is formed with valve pocket (51) coordinates disappearance, connected between rodless cavity (a) and rod chamber (b).
5. anticorrosion single-action hydraulic cylinder as claimed in claim 4, it is characterised in that: the sealing that described spool (52) is formed with valve pocket (51) coordinates to seal for taper surface and coordinates.
6. anticorrosion single-action hydraulic cylinder as claimed in claim 1 or 2, it is characterised in that: described cylinder head (2) is provided with the fuel feed hole (21) connected with rodless cavity (a).
7. anticorrosion single-action hydraulic cylinder as claimed in claim 1 or 2, it is characterised in that: described piston (3) is connected with piston rod (4) threaded engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291182.1A CN105757042A (en) | 2016-04-29 | 2016-04-29 | Anticorrosion single-action hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291182.1A CN105757042A (en) | 2016-04-29 | 2016-04-29 | Anticorrosion single-action hydraulic cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN105757042A true CN105757042A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610291182.1A Pending CN105757042A (en) | 2016-04-29 | 2016-04-29 | Anticorrosion single-action hydraulic cylinder |
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| CN (1) | CN105757042A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107662883A (en) * | 2017-10-11 | 2018-02-06 | 长治市潞安合力机械有限责任公司 | Head carry concealed ladder and can fast braking monorail crane dolly |
| CN107720547A (en) * | 2017-10-11 | 2018-02-23 | 长治市潞安合力机械有限责任公司 | A kind of monorail crane quick pressure releasing brake |
| CN108105198A (en) * | 2016-11-25 | 2018-06-01 | 湖北江山液压科技有限公司 | A kind of single-action hydraulic cylinder |
| CN109058221A (en) * | 2018-09-28 | 2018-12-21 | 燕山大学 | A kind of hydraulic support cylinder |
| CN109555795A (en) * | 2017-09-25 | 2019-04-02 | 郑州宇通客车股份有限公司 | Clutch servo-cylinder and on-off control mechanism |
| CN109826898A (en) * | 2019-03-28 | 2019-05-31 | 湖州吉信科技发展有限公司 | A kind of piston spring retarding mechanism |
| CN110307192A (en) * | 2019-07-31 | 2019-10-08 | 娄底市中兴液压件有限公司 | Pressurize oil cylinder |
| CN111348597A (en) * | 2020-03-25 | 2020-06-30 | 安徽合力股份有限公司 | Gas-liquid double-medium buffer oil cylinder and buffer method thereof |
| CN113175460A (en) * | 2021-04-23 | 2021-07-27 | 中国人民解放军国防科技大学 | Hydraulic cylinder with variable piston section size |
| CN115727033A (en) * | 2022-11-29 | 2023-03-03 | 苏州艾维科斯园林设备有限公司 | Bidirectional quick energy-saving efficient hydraulic oil cylinder and use method thereof |
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| CN102979780A (en) * | 2012-11-22 | 2013-03-20 | 三一重工股份有限公司 | Hydraulic cylinder and engineering machine with hydraulic cylinder |
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| CN203362664U (en) * | 2013-07-10 | 2013-12-25 | 宁波如意股份有限公司 | Synchronous oil cylinder |
| CN103511389A (en) * | 2013-10-15 | 2014-01-15 | 湖南特力液压有限公司 | Singe-acting hydraulic cylinder |
| CN205559417U (en) * | 2016-04-29 | 2016-09-07 | 合肥长源液压股份有限公司 | Anticorrosion is pneumatic cylinder for nonoculture |
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2016
- 2016-04-29 CN CN201610291182.1A patent/CN105757042A/en active Pending
Patent Citations (5)
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| US8567575B2 (en) * | 2006-11-15 | 2013-10-29 | Mando Corporation | Shock absorber having self pumping unit |
| CN102979780A (en) * | 2012-11-22 | 2013-03-20 | 三一重工股份有限公司 | Hydraulic cylinder and engineering machine with hydraulic cylinder |
| CN203362664U (en) * | 2013-07-10 | 2013-12-25 | 宁波如意股份有限公司 | Synchronous oil cylinder |
| CN103511389A (en) * | 2013-10-15 | 2014-01-15 | 湖南特力液压有限公司 | Singe-acting hydraulic cylinder |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105198A (en) * | 2016-11-25 | 2018-06-01 | 湖北江山液压科技有限公司 | A kind of single-action hydraulic cylinder |
| CN109555795A (en) * | 2017-09-25 | 2019-04-02 | 郑州宇通客车股份有限公司 | Clutch servo-cylinder and on-off control mechanism |
| CN109555795B (en) * | 2017-09-25 | 2024-04-26 | 宇通客车股份有限公司 | Clutch booster cylinder and clutch operating mechanism |
| CN107720547A (en) * | 2017-10-11 | 2018-02-23 | 长治市潞安合力机械有限责任公司 | A kind of monorail crane quick pressure releasing brake |
| CN107662883A (en) * | 2017-10-11 | 2018-02-06 | 长治市潞安合力机械有限责任公司 | Head carry concealed ladder and can fast braking monorail crane dolly |
| CN109058221A (en) * | 2018-09-28 | 2018-12-21 | 燕山大学 | A kind of hydraulic support cylinder |
| CN109058221B (en) * | 2018-09-28 | 2023-09-01 | 燕山大学 | Hydraulic support cylinder |
| CN109826898A (en) * | 2019-03-28 | 2019-05-31 | 湖州吉信科技发展有限公司 | A kind of piston spring retarding mechanism |
| CN110307192A (en) * | 2019-07-31 | 2019-10-08 | 娄底市中兴液压件有限公司 | Pressurize oil cylinder |
| CN110307192B (en) * | 2019-07-31 | 2024-06-07 | 娄底市中兴液压件有限公司 | Pressurized oil cylinder |
| CN111348597B (en) * | 2020-03-25 | 2023-12-01 | 安徽合力股份有限公司 | Gas-liquid double-medium buffer oil cylinder and buffer method thereof |
| CN111348597A (en) * | 2020-03-25 | 2020-06-30 | 安徽合力股份有限公司 | Gas-liquid double-medium buffer oil cylinder and buffer method thereof |
| CN113175460A (en) * | 2021-04-23 | 2021-07-27 | 中国人民解放军国防科技大学 | Hydraulic cylinder with variable piston section size |
| CN113175460B (en) * | 2021-04-23 | 2023-09-01 | 中国人民解放军国防科技大学 | Hydraulic cylinder with variable piston section |
| CN115727033B (en) * | 2022-11-29 | 2023-11-14 | 苏州艾维科斯园林设备有限公司 | Bidirectional rapid energy-saving efficient hydraulic cylinder and application method thereof |
| CN115727033A (en) * | 2022-11-29 | 2023-03-03 | 苏州艾维科斯园林设备有限公司 | Bidirectional quick energy-saving efficient hydraulic oil cylinder and use method thereof |
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Application publication date: 20160713 |