CN101776101B - Self cooling and lubrication type frequently reciprocating hydraulic cylinder - Google Patents
Self cooling and lubrication type frequently reciprocating hydraulic cylinder Download PDFInfo
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- CN101776101B CN101776101B CN 200910254576 CN200910254576A CN101776101B CN 101776101 B CN101776101 B CN 101776101B CN 200910254576 CN200910254576 CN 200910254576 CN 200910254576 A CN200910254576 A CN 200910254576A CN 101776101 B CN101776101 B CN 101776101B
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Abstract
The invention relates to a self cooling and lubrication type frequently reciprocating hydraulic cylinder. In the technical scheme, a front end cover between a main seal and an auxiliary seal of a piston rod is provided with an annular groove, one port of an oil return pipe extends to one side of the annular groove, the other port of the oil return pipe is communicated with the oil return port of a servo valve, one port of an oil drain pipe extends to the other side of the annular groove, and the other port of the oil drain pipe is communicated with an oil tank of a hydraulic station. Since the oil return pipe is connected with the annular groove to bring away heat and wearers produced in reciprocating motion, the invention solves the problems that heat between the main seal and the auxiliary seal can not be easily dissipated and the wearers can be easily accumulated, thereby preventing oil trapping between the main seal and the auxiliary seal. Moreover, the hydraulic cylinder is a frequently reciprocating hydraulic cylinder which has the advantages of high efficiency, easy manufacture and long service life, and can be used as the vibrating hydraulic cylinder of the crystallizer and the hydraulic cylinder for occasions with frequent reciprocating motion.
Description
Technical field
The present invention relates to a kind of oil hydraulic cylinder, particularly a kind of type frequently reciprocating hydraulic cylinder of self cooling and lubrication.
Background technique
In the casting machine production process, need carry out the double vibrations of uninterrupted above-below direction to crystallizer, preventing that the molten steel in the crystallizer from producing adhesion in the crystallization and freezing process and between copper plate of crystallizer, be exactly crystallizer vibration hydraulic cylinders and drive the element that crystallizer carries out uninterrupted above-below direction double vibrations.Traditional crystallizer vibration hydraulic cylinders is divided into the oil hydraulic cylinder of conventional seals form and the oil hydraulic cylinder of clearance seal form.
The oil hydraulic cylinder soft material rod seal circle of finished product is all adopted in the primary seal at conventional seals form hydraulic cylinder piston rod place and secondary sealing.Since the continuous to-and-fro motion of oil hydraulic cylinder, frictional heating and generation wearing and tearing between rod seal circle and piston rod.Owing to heat between primary seal and the secondary sealing is difficult to scatter and disappear, the wearer accumulation, between major and minor sealing entrap phenomenon is arranged, make piston rod accelerated wear test, the oil cylinder life-span is short, is difficult to satisfy the requirement of casting machine quantity-produced.
The primary seal at clearance seal form hydraulic cylinder piston rod place adopts clearance seal, and the oil hydraulic cylinder soft material rod seal circle of finished product is adopted in secondary sealing.Since the continuous to-and-fro motion of oil hydraulic cylinder, frictional heating and generation wearing and tearing between rod seal and piston rod.Because primary seal adopts clearance seal, there is part piston rod working oil chamber fluid to flow between primary seal and the secondary sealing by the clearance type primary seal, between primary seal and secondary sealing, connect a drain mast Y road and make it flow back to fuel tank.Owing to part piston rod working oil chamber fluid is arranged by the leakage of primary seal 11 by drain mast Y, leak oily heat and the wearer of having taken away between primary seal and the secondary sealing, the oil cylinder life-span is lengthened, satisfied the requirement of casting machine quantity-produced.But because the leakage of part piston rod working oil chamber fluid is arranged, make the increasing of hydraulic system energy consumption, Efficiency Decreasing.In addition, clearance seal is non-finished product sealing, and the cooperation between piston rod and front cover is strict, and manufacture difficulty is large, and the oil cylinder cost is high.
Summary of the invention
In order to overcome the defective of above-mentioned prior art, the object of the present invention is to provide a kind of type frequently reciprocating hydraulic cylinder of self cooling and lubrication, but have the characteristics of efficient height, easily manufacturing, long type frequently reciprocating of life-span.
In order to achieve the above object, technological scheme of the present invention is achieved in that
A kind of type frequently reciprocating hydraulic cylinder of self cooling and lubrication, comprise cylinder barrel 3, the front and back of cylinder barrel 3 are respectively arranged with front cover 2 and rear end cover 4, be provided with piston 1 in the cylinder barrel 3, the Vertical direction of piston 1 is the piston rod 15 that matches with it, from inside to outside be disposed with piston rod guide sleeve 10 between piston rod 15 and the front cover 2, piston rod primary seal 11, the secondary sealing 12 of piston rod and dust ring 13, have circular groove 17 on the front cover 2 between the secondary sealing 12 of piston rod primary seal 11 and piston rod, return tube 18 1 ports are to a side at circular groove 17 places, return tube 18 another port communicate with the return opening of servovalve 6, drain mast 21 1 ports are to the opposite side at circular groove 17 places, and drain mast 21 another port communicate with the fuel tank of hydraulic station 5.
Soft material is all adopted in the secondary sealing 12 of described piston rod primary seal 11 and piston rod.
Be provided with flow controller 14 on the described return tube 18.
The present invention is connected to return tube 18 side at circular groove 17 places, another side joint drain mast 21 at circular groove 17 places, solved that heat between primary seal and the secondary sealing is difficult to scatter and disappear, the problem of wearer accumulation, make between major and minor sealing and do not have entrap phenomenon, this oil hydraulic cylinder is high, the easy manufacturing of a kind of efficient, long type frequently reciprocating hydraulic cylinder of life-span, can be used as crystallizer vibration hydraulic cylinders and type frequently reciprocating occasion oil hydraulic cylinder.
Description of drawings
Accompanying drawing is structural representation of the present invention.
1, piston; 2, front cover; 3, cylinder barrel; 4, rear end cover; 5, hydraulic station; 6, servovalve; 7, rear end cover seal ring; 8, piston packing; 9, piston guide cover; 10, piston rod guide sleeve; 11, piston rod primary seal; 12, the secondary sealing of piston rod; 13, dust ring; 14, flow controller; 15, piston rod; 16, front cover seal ring; 17, circular groove; 18, return tube; 19, front cover hydraulic fluid port; 20, rear end cover hydraulic fluid port; 21, drain mast
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and working principle are described in detail.
With reference to accompanying drawing, a kind of type frequently reciprocating hydraulic cylinder of self cooling and lubrication, comprise cylinder barrel 3, the front and back of cylinder barrel 3 are respectively arranged with front cover 2 and rear end cover 4, be provided with piston 1 in the cylinder barrel 3, the Vertical direction of piston 1 is the piston rod 15 that matches with it, be provided with piston packing 8 and piston guide cover 9 between cylinder barrel 3 and the piston 1, be provided with front cover seal ring 16 between cylinder barrel 3 and the front cover 2, be provided with rear end cover seal ring 7 between cylinder barrel 3 and the rear end cover 4, from inside to outside be disposed with piston rod guide sleeve 10 between piston rod 15 and the front cover 2, piston rod primary seal 11, the secondary sealing 12 of piston rod and dust ring 13, have circular groove 17 on the front cover 2 between the secondary sealing 12 of piston rod primary seal 11 and piston rod, return tube 18 1 ports are to a side at circular groove 17 places, return tube 18 another port communicate with the return opening of servovalve 6, drain mast 21 1 ports are to the opposite side at circular groove 17 places, drain mast 21 another port communicate with the fuel tank of hydraulic station 5, be provided with flow controller 14 on the return tube 18, piston 1 is divided into two chambeies with cylinder barrel 3, ante-chamber communicates with front cover hydraulic fluid port 19 and is connected to servovalve 6, and back cavity communicates with rear end cover hydraulic fluid port 20 and is connected to servovalve 6.
Working principle of the present invention is: because frequently to-and-fro motion of oil hydraulic cylinder, piston rod and piston rod primary seal 11,12 of the secondary sealings of piston rod have produced frictional heat and wearer, piston rod primary seal 11 of the present invention, the oil hydraulic cylinder soft material of finished product is adopted in the secondary sealing 12 of piston rod, utilize oil hydraulic cylinder self servovalve 6 oil return inlet T pressure always to be higher than the characteristic of drain mast Y pressure, servovalve 6 oil return fluid are introduced piston rod primary seal 11 and secondary circular groove 17 places that seal between 12 of piston rod, oil sump tank is drawn by drain mast Y in position between oil hydraulic cylinder opposite side piston rod primary seal 11 and the secondary sealing 12 of piston rod, take away heat and wearer between the secondary sealing 12 of piston rod primary seal 11 and piston rod, flow controller 14 can be controlled the flow that is incorporated into circular groove 17 cooling and lubricating fluid from servovalve 6 return openings, to reach best cooling and lubricating effect, the present invention has improved this place's lubricating condition, has prevented the master, entrap phenomenon between secondary sealing.
Claims (3)
1. the type frequently reciprocating hydraulic cylinder of a self cooling and lubrication, comprise cylinder barrel (3), the front and back of cylinder barrel (3) are respectively arranged with front cover (2) and rear end cover (4), be provided with piston (1) in the cylinder barrel (3), the Vertical direction of piston (1) is the piston rod (15) that matches with piston (1), from inside to outside be disposed with piston rod guide sleeve (10) between piston rod (15) and the front cover (2), piston rod primary seal (11), the secondary sealing of piston rod (12) and dust ring (13), it is characterized in that, have circular groove (17) on the front cover (2) between the secondary sealing of piston rod primary seal (11) and piston rod (12), the side that return tube (18) one ports are located to circular groove (17), return tube (18) another port communicates with the return opening of servovalve (6), the opposite side that drain mast (21) one ports are located to circular groove (17), drain mast (21) another port communicates with the fuel tank of hydraulic station (5);
Piston (1) is divided into two chambeies with cylinder barrel (3), and ante-chamber communicates with front cover hydraulic fluid port (19) and is connected to servovalve (6), and back cavity communicates with rear end cover hydraulic fluid port (20) and is connected to servovalve (6);
Servovalve (6) oil return inlet T pressure always is higher than drain mast pressure, the circular groove (17) that servovalve (6) oil return fluid is introduced between piston rod primary seal (11) and the secondary sealing of piston rod (12) is located, and oil sump tank is drawn by drain mast in the position between oil hydraulic cylinder opposite side piston rod primary seal (11) and the secondary sealing of piston rod (12).
2. oil hydraulic cylinder according to claim 1 is characterized in that, soft material is all adopted in the secondary sealing of described piston rod primary seal (11) and piston rod (12).
3. oil hydraulic cylinder according to claim 1 is characterized in that, is provided with flow controller (14) on the described return tube (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910254576 CN101776101B (en) | 2009-12-29 | 2009-12-29 | Self cooling and lubrication type frequently reciprocating hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910254576 CN101776101B (en) | 2009-12-29 | 2009-12-29 | Self cooling and lubrication type frequently reciprocating hydraulic cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN101776101A CN101776101A (en) | 2010-07-14 |
| CN101776101B true CN101776101B (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910254576 Active CN101776101B (en) | 2009-12-29 | 2009-12-29 | Self cooling and lubrication type frequently reciprocating hydraulic cylinder |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898244B (en) * | 2010-08-16 | 2012-01-04 | 中国重型机械研究院有限公司 | Synchronous hydraulic system of diffluence motor |
| CN102078886B (en) * | 2010-11-19 | 2012-07-11 | 太原重工股份有限公司 | In-mold shearing cylinder of aluminum extruder |
| CN102583188A (en) * | 2012-01-10 | 2012-07-18 | 中煤北京煤矿机械有限责任公司 | Hydraulic jack with lubricating and scrubbing cavity |
| JP6166881B2 (en) * | 2012-10-04 | 2017-07-19 | Ｋｙｂエンジニアリングアンドサービス株式会社 | Single acting hydraulic cylinder |
| CN105333167B (en) * | 2014-06-27 | 2018-02-09 | 浙江三花制冷集团有限公司 | Reversal valve and its sliding block |
| CN105333147A (en) * | 2015-11-25 | 2016-02-17 | 中国航空工业集团公司沈阳飞机设计研究所 | Gas supercharged type hydraulic oil tank sealing device |
| CN112196860B (en) * | 2020-09-29 | 2022-11-22 | 山东钢铁股份有限公司 | Winding drum oil circuit device and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646451Y (en) * | 2003-07-17 | 2004-10-06 | 楼天汝 | Hydraulic oil cylinder |
| EP1621779A2 (en) * | 2004-07-30 | 2006-02-01 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Hydraulic linear drive, especially hydraulic transmission actuator |
| JP2007182985A (en) * | 2006-01-09 | 2007-07-19 | Acetech Enterprise Corp | Hydraulic driving unit for elevating machine |
| CN201507508U (en) * | 2009-09-09 | 2010-06-16 | 中国重型机械研究院有限公司 | Full-hydraulic servo dynamic-balancing exhaust head control mechanism |
-
2009
- 2009-12-29 CN CN 200910254576 patent/CN101776101B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646451Y (en) * | 2003-07-17 | 2004-10-06 | 楼天汝 | Hydraulic oil cylinder |
| EP1621779A2 (en) * | 2004-07-30 | 2006-02-01 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Hydraulic linear drive, especially hydraulic transmission actuator |
| JP2007182985A (en) * | 2006-01-09 | 2007-07-19 | Acetech Enterprise Corp | Hydraulic driving unit for elevating machine |
| CN201507508U (en) * | 2009-09-09 | 2010-06-16 | 中国重型机械研究院有限公司 | Full-hydraulic servo dynamic-balancing exhaust head control mechanism |
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| CN101776101A (en) | 2010-07-14 |
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Address after: 710032 Shaanxi province Xi'an Weiyang Dongyuan Road No. 209 Chinese Heavy Machinery Research Institute Co. Ltd. Patentee after: China National Heavy Machinery Research Institute Co., Ltd. Address before: 710032 Shaanxi province Xi'an Weiyang Dongyuan Road No. 209 Chinese Heavy Machinery Research Institute Co. Ltd. Patentee before: China National Heavy Machinery Research Institute Co., Ltd. |