CN102734250A - Hydraulic oil cylinder - Google Patents
Hydraulic oil cylinder Download PDFInfo
- Publication number
- CN102734250A CN102734250A CN2011100894782A CN201110089478A CN102734250A CN 102734250 A CN102734250 A CN 102734250A CN 2011100894782 A CN2011100894782 A CN 2011100894782A CN 201110089478 A CN201110089478 A CN 201110089478A CN 102734250 A CN102734250 A CN 102734250A
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- China
- Prior art keywords
- ring
- hydraulic jack
- piston
- sealing
- straight pin
- 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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- 239000010720 hydraulic oil Substances 0.000 title abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 37
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 15
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000006253 pitch coke Substances 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 238000001354 calcination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The invention relates to a hydraulic oil cylinder. The hydraulic oil cylinder comprises a hydraulic oil cylinder body, a sealing member, a piston, a sealing ring, a catch wheel, a piston rod, T-shaped cylindrical pins and a lining, wherein the sealing member is a guide ring and a sealing ring; the guide ring is arranged on the piston; the T-shaped cylindrical pins are evenly arranged on the pistons of the front and rear sealing rings; a spring is arranged in the T-shaped cylindrical pin; and an O-shaped sealing ring is arranged at the front end of the lining. As the guide ring, the T-shaped cylindrical pins, the spring and the O-shaped sealing ring are added, higher pressure can be endured, the sealing member is unlikely to be damaged, good sealing effect is ensured, and the service life of the hydraulic oil cylinder is prolonged.
Description
Technical field
Technology of the present invention relates to mechanical field; Particularly, technology of the present invention relates to a kind of hydraulic jack that improves sealing effect, and said hydraulic jack can bear big pressure and Sealing is not easy to damage; Guarantee good sealing effect, prolong the working life of hydraulic jack.
Background technique
Usually; Hydraulic jack is mainly used in vehicle, engineering machinery, handling machinery, mining machinery and other mechanical hydraulic transmission; Such as in the process of pitch coke calcining; Pitch coke calciner plant rotary kiln
uses the purpose of hydraulic jack: overcome cylindrical shell inclination (52/1000) and install, by the axial force of conducting oneself with dignity (about 300 tons of kiln body empty-weight) and frictional force produced.For the support roller that width is not waited weares and teares evenly with wheel band working surface, hydraulic jack and gear wheel are set simultaneously.Play the effect of control kiln cylinder body axial float.Set up oil pressure through oil pump, hydraulic oil acts on oil cylinder inner carrier, the piston rod, through the transmission of exertin, promotes the gear wheel rolling friction, makes the kiln body up, guarantees wheel band and support roller uniform wear on full duration.Hydraulic blocking wheel is provided with two limit switches up and down, and when the kiln body arrived upper limit position, limit switch sent signal; Oil pump quits work automatically, and piston rod is return, and the kiln body leans on deadweight and frictional force and the axial force that produces glides; During to the lower position, limit switch sends signal, and oil pump starts work automatically; It is up to promote the kiln body, goes round and begins again.
At present; Since pitch coke calciner plant rotary kiln
use hydraulic jack is hauled oneself willingly into and is used; There is short defective in working life always, had a strong impact on the normal operation of rotary kiln and the performance of hydraulic blocking wheel performance.
The major defect of its existence is: 1, in the operation process of rotary kiln,, eccentric load arranged on the piston rod, causes the cylinder seal wearing and tearing inhomogeneous because the oil cylinder motion speed is low, and piston and inboard wall of cylinder block friction when serious, plucking inner cylinder body surface produces internal leakage.According to statistics, former hydraulic jack be in working life under the normal operating condition short have only several days, long also is no more than 100 days, fault frequently takes place, and needs often maintenance, has had a strong impact on the normal operation of rotary kiln and the performance of hydraulic blocking wheel performance.2, on the piston guide ring is not set, the cylinder inner bore of oil cylinder and the matching gap of piston very little (being generally about 0.03mm).On piston rod, have eccentric load and have moment of flexure to do the time spent, the centre line is inevitable to have relative deflection with the cylindrical shell endoporus, and a side clearance diminishes, and it is big that a then other side clearance becomes.One side of gap smaller can cause serious wear between piston and the cylinder body, pull-cylinder phenomena might occur; The gap becomes a big side can make seal ring clamp-on in the slit, makes seal ring the side cut damaged condition occur, makes seal life shorten.3, the seal ring life-span short owing to there is uneven wear, when ring wear after to a certain degree, sealing elasticity variation lost efficacy, and failed fully to use sufficient sealing material.4, only use an O-ring seals on the lining, piston rod is in service back and forth, because of stressed irregular, can quicken O-ring seals and lose efficacy, and causes external leakage.
Summary of the invention
Deficiency to the existing hydraulic jack existence of using; Technology of the present invention provides a kind of hydraulic jack that improves sealing effect; The said hydraulic jack that improves sealing effect can bear big pressure and Sealing is not easy to damage; Guarantee good sealing effect, prolong the working life of hydraulic jack.
For obtaining above-mentioned purpose, the technological scheme of the present invention's technology is following,
A kind of hydraulic jack comprises hydraulic cylinder, piston, seal ring and gear wheel, piston rod and lining, and one group of seal groove is set on piston, and Sealing is housed in the seal groove, and Sealing is guide ring and seal ring, and the guide ring material is teflon and copper powder.
This hydraulic jack also comprises the T shape straight pin that is used to support seal ring; T shape straight pin evenly is arranged on the piston of front and back sealing rings through bore mode; And become 90 degree to distribute with seal ring; In T shape straight pin, be provided for supporting the spring of seal ring, and the outer ring radian of this T shape straight pin the outer ring radian is consistent here with said piston.
An O-ring seals is set on the lining of hydraulic jack again, and this O-ring seals is arranged on the lining front end through O-ring seals groove of finish turning.
Technology of the present invention comprises: outlet valve, hydraulic cylinder, T shape straight pin, spring, piston, guide ring, piston rod, pad, end cap, pipe joint, O-ring seals, lining, O-ring seals, back-up ring, bolt and packing ring, pipe joint, seal ring and back-up ring (accompanying drawing 1).The present invention's technology major advantage: 1, increase guide ring, former oil cylinder internal surface is being processed again, increased on the basis of sealing surface hardness and wear resistance, on piston, set up 1 group of guide ring, both can lead, can play the supporting ring effect again.The guide ring material is teflon+copper powder, and its compressive strength can reach 80MPa, and serviceability temperature is about 120 ℃ continuously, and it can bear the caused moment of flexure of eccentric load on the piston rod, reduces wear, and improves the working life of hydraulic jack.2, on the piston of front and back sealing rings, respectively be uniformly distributed with four T shape straight pins, 90 degree distribute, in establish spring; Be used to support seal ring; When sealing material weares and teares, utilize spring force to press closer seal ring, make seal ring and cylinder inner bore guarantee good sealing effect all the time; Can fully use sufficient sealing material again, prolong working life.3, on lining, set up an O-ring seals, can prevent that piston rod is in service back and forth,, produce the O-ring seals rapid wear because of stressed irregular.Because two strong point guiding are difficult for producing the eccentric load phenomenon.
The described a kind of hydraulic jack that improves sealing effect of technology according to the present invention, the said hydraulic jack that improves sealing effect can bear big pressure and Sealing is not easy to damage, and guarantees good sealing effect, prolongs the working life of hydraulic jack.
Description of drawings
Fig. 1 is the hydraulic jack structural drawing after improving.
Fig. 2 is the hydraulic jack structural drawing before improving.
Fig. 3 is the rotary structure sketch.
Wherein, 1 is outlet valve, and 2 is hydraulic cylinder, and 3 is T shape straight pin, and 4 is spring, and 5 is piston, and 6 is guide ring; 7 is piston rod, and 8 is pad, and 9 is end cap, and 10 is pipe joint, and 11 is O-ring seals, and 12 is lining, and 13 is O-ring seals; 14 is back-up ring, and 15 is bolt and packing ring, and 16 is pipe joint, and 17 is seal ring and back-up ring, and 18 is the kiln hood cover, and 19 are the wheel band, and 20 is rotary kiln; 21 is the kiln hood, and 22 is support roller, and 23 is oil cylinder, and 24 is fuel tank, and 25 is oil pump, and 26 is gear wheel
Embodiment
Embodiment 1
A kind of hydraulic jack comprises hydraulic cylinder, piston, seal ring and gear wheel, piston rod and lining, and one group of seal groove is set on piston, and Sealing is housed in the seal groove, and Sealing is guide ring and seal ring, and the guide ring material is teflon and copper powder.
This hydraulic jack also comprises the T shape straight pin that is used to support seal ring; T shape straight pin evenly is arranged on the piston of front and back sealing rings through bore mode; And become 90 degree to distribute with seal ring; In T shape straight pin, be provided for supporting the spring of seal ring, and the outer ring radian of this T shape straight pin the outer ring radian is consistent here with said piston.
An O-ring seals is set on the lining of hydraulic jack again, and this O-ring seals is arranged on the lining front end through O-ring seals groove of finish turning.
The practical implementation step is following:
1, piston (5): 9mm of neutral position finish turning is dark on piston, and the groove of width 30mm is joined the seal ring of corresponding size again, and material is teflon+copper powder.2, T shape straight pin (3): make 8 T shape straight pins, the outer ring radian is consistent here with piston for the outer ring radian, axis of small circle 10mm, long 15mm, axis of great circle 15-20mm, thickness 6mm; And the spring of adapted corresponding size.Locate boring at piston (5), installation T shape straight pin (3), diameter is respectively 10mm, degree of depth 15mm; Diameter 15-20mm; Degree of depth 6mm; Add up to 8, deburring is placed on T shape straight pin in the hole no stuck phenomenon.3, lining (12): at lining front end finish turning the O-ring seals groove is installed, groove depth 5mm, width 5.5mm, and join corresponding O-ring seals, size 106*5.3.4, assembling: T shape straight pin is installed on the front end piston, puts seal ring, slowly advance after pushing down to cylinder inner bore; The guide ring seal ring is installed subsequently; Slowly advance to cylinder inner bore, back T shape straight pin is installed on the piston of rear end again, puts seal ring; Slowly advance after pushing down, then with parts such as end cap, lining installation in position in order to cylinder inner bore.5, pressure test: in test room, pipe joint (8,12) is inserted hydraulic system respectively, feed hydraulic oil, simulated condition makes an experiment, check piston running state, leakage test etc.
The described a kind of hydraulic jack that improves sealing effect of the present invention's technology, the hydraulic jack that can improve sealing effect can bear than big pressure and Sealing and be not easy to damage, and guarantees good sealing effect, prolongs the working life of hydraulic jack.
Claims (6)
1. a hydraulic jack comprises hydraulic cylinder, piston, seal ring and gear wheel, piston rod and lining, it is characterized in that: one group of seal groove is set on the said piston, in the said seal groove Sealing is housed, said Sealing is guide ring and seal ring.
2. a kind of hydraulic jack according to claim 1; It is characterized in that: said hydraulic jack also comprises the T shape straight pin that is used to support seal ring; Said T shape straight pin evenly is arranged on through bore mode on the piston of front and back sealing rings, and said T shape straight pin becomes 90 degree to distribute with seal ring.
3. a kind of hydraulic jack according to claim 1 is characterized in that: said hydraulic jack also comprises an O-ring seals, and said O-ring seals is arranged on the lining front end through O-ring seals groove of finish turning.
4. a kind of hydraulic jack according to claim 1 is characterized in that: said guide ring material is teflon and copper powder.
5. a kind of hydraulic jack according to claim 2 is characterized in that: the spring that is provided for supporting seal ring in the said T shape straight pin.
6. a kind of hydraulic jack according to claim 2 is characterized in that: the outer ring radian is consistent here with said piston for the outer ring radian of said T shape straight pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100894782A CN102734250A (en) | 2011-04-11 | 2011-04-11 | Hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100894782A CN102734250A (en) | 2011-04-11 | 2011-04-11 | Hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102734250A true CN102734250A (en) | 2012-10-17 |
Family
ID=46990333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100894782A Pending CN102734250A (en) | 2011-04-11 | 2011-04-11 | Hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102734250A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455453A (en) * | 2014-12-10 | 2015-03-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Sealing structure |
| CN104949504A (en) * | 2015-06-04 | 2015-09-30 | 黎建军 | Detection middle part structure of rotary kiln supporting roller |
| CN109475964A (en) * | 2016-07-13 | 2019-03-15 | 纽弗雷有限公司 | Engagement head and engagement device with reduced interference profile |
| CN110144822A (en) * | 2019-05-07 | 2019-08-20 | 江苏法尔胜缆索有限公司 | Suspension bridge space large corner, durable suspension cable connection structure |
Citations (16)
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|---|---|---|---|---|
| US4627795A (en) * | 1982-03-30 | 1986-12-09 | Linde Aktiengesellschaft | Piston assembly for a compressor or the like |
| CN85107198A (en) * | 1985-09-28 | 1987-03-11 | 上海市液压气动技术研究所 | The single rod cylinder of the double-action of the removable installation of standard type |
| CN2048923U (en) * | 1989-05-17 | 1989-12-06 | 田俊华 | Self-sealing tyre valve |
| CN2256963Y (en) * | 1996-07-09 | 1997-06-25 | 张进元 | Split-type piston-ring |
| CN2474811Y (en) * | 1999-12-20 | 2002-01-30 | 邹城市中煤精工科技开发有限责任公司 | Hydraulic cylinder composite sealing device |
| EP1288541A2 (en) * | 2001-08-31 | 2003-03-05 | EAGLE INDUSTRY Co., Ltd. | Mechanical sealing device |
| CN1553130A (en) * | 2003-12-18 | 2004-12-08 | 武汉理工大学 | Rotary kiln hydraulic retaining cylinder |
| CN1847706A (en) * | 2005-10-09 | 2006-10-18 | 兰州理工大学 | A soft packing sealing structure |
| CN2854104Y (en) * | 2005-03-20 | 2007-01-03 | 张立峰 | Automatic expansion piston ring |
| KR20080097394A (en) * | 2005-12-28 | 2008-11-05 | 이글 고오교 가부시키가이샤 | Rotary joint |
| WO2009136539A1 (en) * | 2008-05-09 | 2009-11-12 | イーグル工業株式会社 | Split mechanical seal |
| CN201496234U (en) * | 2009-09-30 | 2010-06-02 | 刘鼎革 | Compressing cylinder of electric reciprocating-type vapor recycling machine |
| CN201696605U (en) * | 2010-07-15 | 2011-01-05 | 李怀志 | Autocompensation piston ring |
| US20110037232A1 (en) * | 2008-07-07 | 2011-02-17 | Eagle Industry Co., Ltd. | Mechanical seal device |
| US20110198813A1 (en) * | 2009-09-24 | 2011-08-18 | Hidekazu Takahashi | Mechanical seal |
| CN202031906U (en) * | 2011-04-11 | 2011-11-09 | 上海宝钢化工有限公司 | Hydraulic oil cylinder |
-
2011
- 2011-04-11 CN CN2011100894782A patent/CN102734250A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4627795A (en) * | 1982-03-30 | 1986-12-09 | Linde Aktiengesellschaft | Piston assembly for a compressor or the like |
| CN85107198A (en) * | 1985-09-28 | 1987-03-11 | 上海市液压气动技术研究所 | The single rod cylinder of the double-action of the removable installation of standard type |
| CN2048923U (en) * | 1989-05-17 | 1989-12-06 | 田俊华 | Self-sealing tyre valve |
| CN2256963Y (en) * | 1996-07-09 | 1997-06-25 | 张进元 | Split-type piston-ring |
| CN2474811Y (en) * | 1999-12-20 | 2002-01-30 | 邹城市中煤精工科技开发有限责任公司 | Hydraulic cylinder composite sealing device |
| EP1288541A2 (en) * | 2001-08-31 | 2003-03-05 | EAGLE INDUSTRY Co., Ltd. | Mechanical sealing device |
| CN1553130A (en) * | 2003-12-18 | 2004-12-08 | 武汉理工大学 | Rotary kiln hydraulic retaining cylinder |
| CN2854104Y (en) * | 2005-03-20 | 2007-01-03 | 张立峰 | Automatic expansion piston ring |
| CN1847706A (en) * | 2005-10-09 | 2006-10-18 | 兰州理工大学 | A soft packing sealing structure |
| KR20080097394A (en) * | 2005-12-28 | 2008-11-05 | 이글 고오교 가부시키가이샤 | Rotary joint |
| WO2009136539A1 (en) * | 2008-05-09 | 2009-11-12 | イーグル工業株式会社 | Split mechanical seal |
| US20110037232A1 (en) * | 2008-07-07 | 2011-02-17 | Eagle Industry Co., Ltd. | Mechanical seal device |
| US20110198813A1 (en) * | 2009-09-24 | 2011-08-18 | Hidekazu Takahashi | Mechanical seal |
| CN201496234U (en) * | 2009-09-30 | 2010-06-02 | 刘鼎革 | Compressing cylinder of electric reciprocating-type vapor recycling machine |
| CN201696605U (en) * | 2010-07-15 | 2011-01-05 | 李怀志 | Autocompensation piston ring |
| CN202031906U (en) * | 2011-04-11 | 2011-11-09 | 上海宝钢化工有限公司 | Hydraulic oil cylinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455453A (en) * | 2014-12-10 | 2015-03-25 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Sealing structure |
| CN104949504A (en) * | 2015-06-04 | 2015-09-30 | 黎建军 | Detection middle part structure of rotary kiln supporting roller |
| CN109475964A (en) * | 2016-07-13 | 2019-03-15 | 纽弗雷有限公司 | Engagement head and engagement device with reduced interference profile |
| CN110144822A (en) * | 2019-05-07 | 2019-08-20 | 江苏法尔胜缆索有限公司 | Suspension bridge space large corner, durable suspension cable connection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |