CN103174699A - Servo hydraulic cylinder - Google Patents
Servo hydraulic cylinder Download PDFInfo
- Publication number
- CN103174699A CN103174699A CN2013100640130A CN201310064013A CN103174699A CN 103174699 A CN103174699 A CN 103174699A CN 2013100640130 A CN2013100640130 A CN 2013100640130A CN 201310064013 A CN201310064013 A CN 201310064013A CN 103174699 A CN103174699 A CN 103174699A
- Authority
- CN
- China
- Prior art keywords
- oil
- guide sleeve
- piston rod
- cylinder body
- servo hydraulic
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 59
- 239000003921 oil Substances 0.000 claims description 121
- 239000010720 hydraulic oil Substances 0.000 claims description 53
- 239000002783 friction material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 13
- 230000003068 static effect Effects 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Landscapes
- Actuator (AREA)
Abstract
The invention discloses a servo hydraulic cylinder. The servo hydraulic cylinder comprises a cylinder body, a piston, a piston rod, a pair of guide sleeves and a first sealing element. A first oil drainage hole and a first oil filling hole communicated with a cylinder body cavity are formed in the outer surface of the cylinder body. The piston is arranged inside the cylinder body cavity and capable of doing axial reciprocating motion, and separates the cylinder body into two independent parts. The piston rod is fixedly connected with the piston. Two ends of the piston rod penetrate out two ends of the cylinder body. The pair of guide sleeves are arranged at two ends of the cylinder body and sleeved on the piston rod. The pair of guide sleeves are provided with second oil filling holes and second oil drainage holes. The second oil filling holes are communicated with the first oil filling holes. The second oil drainage holes are communicated with the first oil drainage holes. An oil sealing surface is formed between the inner wall of the guide sleeve and the outer surface of the piston rod. The first sealing element is arranged between the outer surface of the piston rod and the inner wall of the guide sleeve. The oil sealing surface separates the first sealing element and the cylinder body cavity. The servo hydraulic cylinder has the advantages of being capable of effectively reducing abrasion between the piston rod and the guide sleeve, stable in sealing, and long in service life.
Description
Technical field
The present invention relates to a kind of hydraulic jack, particularly a kind of servo hydraulic oil cylinder.
Background technique
The servo hydraulic oil cylinder of prior art, piston rod directly contacts with guide sleeve, in running, between piston rod and guide sleeve due to long-time friction, wear problem easily appears, especially under the high speed to-and-fro motion, as the to-and-fro motion under 200HZ, wearing and tearing between piston rod and guide sleeve are even more serious, cause the servo hydraulic oil cylinder working efficiency to reduce the problem that collapse even occurs.Simultaneously, the first Sealing between piston rod and guide sleeve can be directly contacts with the interior hydraulic oil of cylinder body, in the servo hydraulic oil cylinder running, can be subject to the active force of hydraulic oil, the first Sealing is under the working environment of high pressure, easily produces wearing and tearing, heating even damages, and causes the sealing effect even loss of seal performance that descends, the problem that hydraulic oil leaks occurs, reduced the working efficiency of servo hydraulic oil cylinder and shortened working life of servo hydraulic oil cylinder.
Summary of the invention
The object of the present invention is to provide and a kind ofly can effectively reduce the wearing and tearing that cause due to friction between piston rod and guide sleeve, can realize stable sealing again, the servo hydraulic oil cylinder that working life is long.
According to an aspect of the present invention, provide a kind of servo hydraulic oil cylinder, having comprised:
Cylinder body, outer surface are provided with the first draining hole, the first oil hole that communicates with inner chamber of cylinder block;
Piston is built in inner chamber of cylinder block and can does axially reciprocating, and inner chamber of cylinder block is separated into independently two-part;
Piston rod is fixed on piston, and its two ends pass respectively the two ends of cylinder body;
A pair of guide sleeve, be located at cylinder body two ends and cover and be through on piston rod, be provided with the second oil hole and the second draining hole, the second oil hole communicates with the first oil hole, the second draining hole communicates with the first draining hole, forms oil sealing surface between the inwall of guide sleeve and piston rod outer surface;
The first Sealing is located between the outer surface and guide sleeve inwall of piston rod, and oil sealing surface separates the first Sealing and inner chamber of cylinder block.
Form oil sealing surface between piston rod outer surface and guide sleeve inwall, form toward oil sealing surface injection pressure lubricant oil by the first oil hole and suspend, form the static pressure oil film between piston rod outer surface and guide sleeve, guide sleeve inwall and piston rod outer surface are separated fully, reduced significantly the relative friction between piston rod and guide sleeve, reduced wearing and tearing between the two, improved the stability of a kind of servo hydraulic oil cylinder work of the present invention and extended working life.Simultaneously, in a kind of servo hydraulic oil cylinder operation of the present invention working procedure, the static pressure oil film separates the hydraulic oil in the first Sealing and inner chamber of cylinder block, make the first Sealing be in lower working pressure, effectively avoided the first Sealing to be prone to the even problem of damage of wearing and tearing, heating, strengthened the sealing effect of the first Sealing, and then improved the stability of a kind of servo hydraulic oil cylinder work of the present invention and extended working life.
In some embodiments, the guide sleeve inwall is provided with and the second oil hole corresponding oil pocket that communicates one by one, and the oil pocket number is even number, is symmetrically distributed on the inwall of guide sleeve.Oil pocket is corresponding one by one with the second oil hole, makes pressure lubrication oil to enter into equably in oil pocket, is beneficial to the formation of static pressure oil film; The number of oil pocket is even number, be symmetrically distributed on the inwall of guide sleeve, when making piston rod be subject to radial load, between relative oil pocket, pressure difference can appear, this pressure difference and radial load balance, make piston rod still be in the central authorities of cylinder body, improved thus the stability of a kind of servo hydraulic oil cylinder work of the present invention.
In some embodiments, can also be provided with the first oil groove that is communicated with the first oil hole and the second oil hole on the outer surface of guide sleeve.Avoided thus owing to producing or assembly error causes the first oil hole and the existence of the second oil hole on not going up or the problem of misalignment affects pressure lubrication oil and enters smoothly, and then affect the formation of static pressure oil film, improved thus the stability of a kind of servo hydraulic oil cylinder work of the present invention.
In some embodiments, the outer surface of guide sleeve can be provided with the second oil groove that is communicated with the first draining hole and the second draining hole.The quantity that makes thus the first draining hole is lacked also than the quantity in the second draining hole can realize releasing smoothly of pressure lubrication oil, has reduced the difficulty of cylinder body production and processing, improves thus the practicability of a kind of servo hydraulic oil cylinder of the present invention.
In some embodiments, piston rod can in be hollow.Can reduce the weight of piston rod thus, improve the dynamic performance of piston rod, can effectively reduce the wearing and tearing between piston rod and guide sleeve, thereby improved the stability of a kind of servo hydraulic oil cylinder work of the present invention and extended working life.
In some embodiments, can also comprise a pair of end cap that is located at the cylinder body two ends, the tight pressing of end cap and guide sleeve makes when piston rod moves, and guide sleeve can not axially move outside cylinder body.Make thus guide sleeve can be designed as removable, conveniently carry out inspection and maintenance.
In some embodiments, can be provided with the oil trap that communicates with the second draining hole on the inwall of guide sleeve.Make thus pressure lubrication oil flow through and to be integrated into the second place, draining hole after oil sealing surface, be convenient to pressure lubrication oil and release smoothly, improved the stability of a kind of servo hydraulic oil cylinder work of the present invention.
In some embodiments, can be provided with the second Sealing between piston and cylinder body.The second Sealing has sealed the gap between piston and cylinder barrel, prevents from leaking in hydraulic oil, has improved the stability of a kind of servo hydraulic oil cylinder work of the present invention.
In some embodiments, the first Sealing and the second Sealing can be any in the combined type packing ring of O shape circle, Y shape circle, v shaped ring or rubber material and low-friction material and use.Can select according to actual needs, improve the practicability of a kind of servo hydraulic oil cylinder of the present invention.
In some embodiments, can be provided with the 3rd Sealing between guide sleeve and cylinder body.The 3rd Sealing has sealed the gap between guide sleeve and cylinder body, prevents that hydraulic oil from leaking outside, and has improved the stability of a kind of servo hydraulic oil cylinder work of the present invention.
Description of drawings
Fig. 1 is the section of structure of a kind of servo hydraulic oil cylinder of one embodiment of the present invention.
Fig. 2 is that Fig. 1 is along the sectional view of A-A line.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Fig. 1 has schematically shown a kind of servo hydraulic oil cylinder according to one embodiment of the present invention.As shown in Figure 1, this servo hydraulic oil cylinder comprises cylinder body 1, piston 2, piston rod 3, a pair of guide sleeve 4, the first Sealing 5.In addition, also comprise a pair of end cap 6, the second Sealing 7 and the 3rd Sealing 8.
The outer surface of cylinder body 1 is provided with the first oil hole 101 of communicating with inner chamber, the first draining hole 102, the first oil through 103 and the second oil through 104.Piston 2 is built in cylinder body 1 inner chamber, and its outer surface and cylinder body 1 inwall fit tightly, and being separated into cylinder body 1 inner chamber independently, the first appearance oil pocket 105 and second holds oil pocket 106.The first oil through 103 and first holds oil pocket 105 and communicates, and the second oil through 104 and second holds oil pocket 106 and communicates.In the present embodiment, piston rod 3 is integrative-structures with piston 2, and piston rod 3 two ends pass respectively the two ends of cylinder body 1.In other embodiments, piston rod 3 can be to connect or the mode that is threaded is fixed on piston 2 by semi-ring.
A pair of cover is through the two ends that guide sleeve 4 on piston rod 3 is fixedly connected on cylinder body 1, lays respectively at first and holds oil pocket 105 and second and hold in oil pocket 106.
As shown in Figure 2, form oil sealing surface 9 between the inwall of guide sleeve 4 and piston rod 3 outer surfaces.
In the present embodiment, being to make guide sleeve 4 be fixedly connected with cylinder body 1 by being provided with end cap 6 at cylinder body 1 two ends, specifically, is exactly the end that an end of the fixing part 401 of guide sleeve 4 is closely pressed together on cylinder body 1, when making piston rod 3 operation, guide sleeve 4 can not axially move to cylinder body 1 inner chamber.End cap 6 is pressed together on the other end of guide sleeve 4 fixing parts 401, and when making piston rod 3 operation, guide sleeve 4 can not axially move outside cylinder body 1.In other embodiments, guide sleeve 4 and the Placement of cylinder body 1 can be by welding or be threaded, and perhaps guide sleeve 4 is integrative-structure with cylinder body 1.
In the present embodiment, end cap 6 is to be fixedly connected with cylinder body 1 by the mode that flange connects, and in other embodiments, can be also by welding, be threaded or the Placement such as pull bar connection.
Offer the second oil hole 402 on guide sleeve 4 and the second draining hole 403, the second oil holes 402 communicate with the first oil hole 101, the second draining 402 holes communicate with the first draining hole 102.
The first Sealing 5 overlaps in the sealed groove that is through on guide sleeve 4 inwalls, between the outer surface and guide sleeve 4 inwalls of piston rod 3.The quantity of the first Sealing 5 can be selected according to actual needs, and in the present embodiment, quantity is three.Oil sealing surface 9 separates the first Sealing 5 with cylinder body 1 inner chamber.
The second Sealing 7 overlaps in the sealed groove that is through on piston 2 outer surfaces, between piston 2 outer surfaces and cylinder body 1 inwall.The quantity of the second Sealing 7 can be selected according to actual needs, and in the present embodiment, quantity is one.
The 3rd Sealing 8 is socketed in the sealed groove that is through on guide sleeve 4 outer surfaces, between guide sleeve 4 outer surfaces and cylinder body 1 inwall.
When holding oil pocket 105 injection liquid force feed by the first oil through 103 toward first, piston 2 drives piston rod 3 and axially moves to the second oil pocket 106.When holding oil pocket 106 injection liquid force feed by the second oil through 104 toward second, piston 2 drive piston rods 3 yearnings first are held oil pocket 105 and are axially moved.Thereby realize that piston 2 drives piston rod 3 and does axially reciprocating.
Be hollow in piston rod 3, be hollow stem.Can reduce thus the weight of piston rod 3, improve the dynamic performance of piston rod 3, can effectively reduce the wearing and tearing of 4 of piston rod 3 and guide sleeves, thereby improve stability and the working life of a kind of servo hydraulic oil cylinder work of the present invention.
As shown in Figure 2, have on guide sleeve 4 inwalls and the second oil hole 402 corresponding oil pocket that communicates 404 one by one.The quantity of oil pocket 404 is even number, is generally four, six or eight, in the present embodiment, is six, is symmetrically distributed on the inwall of guide sleeve 4.
The quantity of the second oil hole 402 is consistent and corresponding one by one with the quantity of oil pocket 404.Can realize that thus pressure lubrication oil can evenly be attached to the outer surface of piston rod 3, be convenient to the static pressure oil film and form smoothly, improve the stability of a kind of servo hydraulic oil cylinder work of the present invention.
Has the first oil groove 405 that is communicated with the first oil hole 101 and the second oil hole 402 on the outer surface of guide sleeve 4.Make thus the first oil hole 101 and the second all oil holes 402 connect, avoided owing to producing or assembly error causes the first oil hole 101 and the second oil hole 402 existence on not going up or the problem of misalignment affects pressure lubrication oil and enters smoothly, and then affect the formation of static pressure oil film, improved thus the stability of a kind of servo hydraulic oil cylinder work of the present invention.Simultaneously, the quantity that also makes the quantity of the first oil hole 101 be less than the second oil hole 402 also can realize the smooth injection of pressure lubrication oil.Can reduce the difficulty of cylinder body 1 production and processing thus, thereby improve the practicability of a kind of servo hydraulic oil cylinder of the present invention.
The outer surface of guide sleeve 4 has the second oil groove 406 that is communicated with the first draining hole 102 and the second draining hole 403.The quantity that makes thus the quantity in the first draining hole 102 be less than the second draining hole 403 also can realize releasing smoothly of pressure lubrication oil.Can reduce the difficulty of cylinder body 1 production and processing thus, thereby improve the practicability of a kind of servo hydraulic oil cylinder of the present invention.
Has the oil trap 407 that communicates with the second draining hole 402 on the inwall of guide sleeve 4, oil trap 407 communicates with oil sealing surface 9, make pressure lubrication oil flow through and to be integrated into 402 places, the second draining hole after oil sealing surface 9, be convenient to pressure lubrication oil and release smoothly, improved the stability of a kind of servo hydraulic oil cylinder work of the present invention.
The first Sealing 5 and the second Sealing 7 can be the combined type packing rings of O shape circle, Y shape circle, v shaped ring or rubber material and low-friction material and use.In the present embodiment, be the Assembled sealer that O shape RunddichtringO and ring washer are embedded as a whole, when making a kind of servo hydraulic oil cylinder of the present invention carry out the high-frequency reciprocating motion, also can realize the sealing good and stable to hydraulic oil.
The 3rd Sealing 8 can be any in y-shaped ring, U-shaped seal ring, O shape RunddichtringO or v-ring.In the present embodiment, be O shape RunddichtringO.
When a kind of servo hydraulic oil cylinder of the present invention uses, the pressure lubrication oil that will have constantly certain pressure by oil supply system pumps into from the first oil hole 101, pressure lubrication oil flow through the first oil groove 405, the second oil through 402, enter oil pocket 404, piston rod 3 is pushed to the central authorities of cylinder body 1, at the interior formation static pressure of oil sealing surface 9 oil film, then the oil sealing surface 9 of flowing through, oil pressure reduces approaching zero, enter into again oil trap 407, by the second draining hole 403, the second oil groove 406 and the first draining hole 102, get back to the fuel tank in oil supply system, the circulation of mineralization pressure lubricant oil.When piston rod 3 was not subjected to load, the oil pressure in each oil pocket 404 was identical, and piston rod 3 is in the central authorities of cylinder body 1.When piston rod 3 is subject to the radial load of any direction, piston rod 3 produces micro-displacement (micron order), pressure difference can occur between relative oil pocket, pressure difference occurs between relative oil pocket 404, this pressure difference and radial load balance make piston rod 3 still be in the central authorities of cylinder body 1.Pump into hydraulic oil toward the first oil through 103 or the second oil through 104 respectively, can realize that piston 2 drives piston rod 3 and carries out axially reciprocating, realize the control to outside actuator.
In the process of a kind of servo hydraulic oil cylinder operation of the present invention, especially when carrying out high-frequency operation, as the to-and-fro motion under 200HZ, all the time isolated by the static pressure oil film between guide sleeve 4 and piston rod 3, form liquid friction between the two, wear and tear less, improve working stability and extended working life.The static pressure oil film separates the hydraulic oil in the first Sealing 5 and cylinder body 1 inner chamber, make the first Sealing 5 be in all the time under extremely low pressure in the servo hydraulic oil cylinder working procedure, effectively avoid the first Sealing 5 problem of wearing and tearing, generating heat and even damaging to occur due to the pressure that is subject to hydraulic oil, therefore can realize stable sealing.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. a servo hydraulic oil cylinder, is characterized in that, comprising:
Cylinder body, outer surface are provided with the first draining hole, the first oil hole that communicates with inner chamber of cylinder block;
Piston is built in described inner chamber of cylinder block and can does axially reciprocating, and described inner chamber of cylinder block is separated into independently two-part;
Piston rod is fixed on described piston, and its two ends pass respectively the two ends of described cylinder body;
A pair of guide sleeve, being located at described cylinder body two ends and cover is through on described piston rod, be provided with the second oil hole and the second draining hole, described the second oil hole communicates with the first oil hole, described the second draining hole communicates with the first draining hole, forms oil sealing surface between the inwall of described guide sleeve and described piston rod outer surface;
The first Sealing is located between the outer surface and described guide sleeve inwall of described piston rod, and described oil sealing surface separates described the first Sealing and described inner chamber of cylinder block.
2. a kind of servo hydraulic oil cylinder according to claim 1, is characterized in that, described guide sleeve inwall is provided with and described the second oil hole corresponding oil pocket that communicates one by one, and described oil pocket number is even number, is symmetrically distributed on the inwall of guide sleeve.
3. a kind of servo hydraulic oil cylinder according to claim 2, is characterized in that, the outer surface of described guide sleeve is provided with the first oil groove that is communicated with described the first oil hole and described the second oil hole.
4. a kind of servo hydraulic oil cylinder according to claim 3, is characterized in that, the outer surface of described guide sleeve is provided with the second oil groove that is communicated with described the first draining hole and described the second draining hole.
5. a kind of servo hydraulic oil cylinder according to claim 4, is characterized in that, is hollow in described piston rod.
6. the described a kind of servo hydraulic oil cylinder of according to claim 1-5 any one, it is characterized in that, also comprise a pair of end cap that is located at described cylinder body two ends, described end cap and the tight pressing of described guide sleeve, make when described piston rod operation, described guide sleeve can not axially move outside described cylinder body.
7. a kind of servo hydraulic oil cylinder according to claim 6, is characterized in that, the inwall of described guide sleeve is provided with the oil trap that communicates with described the second draining hole.
8. a kind of servo hydraulic oil cylinder according to claim 7, is characterized in that, is provided with the second Sealing between described piston and described cylinder body.
9. a kind of servo hydraulic oil cylinder according to claim 8, is characterized in that, described the first Sealing and the second Sealing are any in the combined type packing ring of O shape circle, Y shape circle, v shaped ring or rubber material and low-friction material and use.
10. a kind of servo hydraulic oil cylinder according to claim 9, is characterized in that, is provided with the 3rd Sealing between described guide sleeve and described cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310064013.0A CN103174699B (en) | 2013-02-28 | 2013-02-28 | A kind of servo hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310064013.0A CN103174699B (en) | 2013-02-28 | 2013-02-28 | A kind of servo hydraulic oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103174699A true CN103174699A (en) | 2013-06-26 |
| CN103174699B CN103174699B (en) | 2015-11-18 |
Family
ID=48634782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310064013.0A Expired - Fee Related CN103174699B (en) | 2013-02-28 | 2013-02-28 | A kind of servo hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103174699B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454765A (en) * | 2014-12-31 | 2015-03-25 | 太原科技大学 | Designing method of constant-pressure oil supply type load-deflection resistance horizontal type servo oil cylinder |
| CN105952710A (en) * | 2016-07-12 | 2016-09-21 | 天津优瑞纳斯液压机械有限公司 | High frequency response low friction servo hydraulic cylinder |
| CN108194450A (en) * | 2017-12-29 | 2018-06-22 | 宁波海天金属成型设备有限公司 | The oil cylinder for preventing cylinder piston rod from leaking |
| CN109154311A (en) * | 2016-10-07 | 2019-01-04 | 梅特内尔公司 | Gas booster with lubricating action |
| CN109515673A (en) * | 2018-10-30 | 2019-03-26 | 武汉船用机械有限责任公司 | A kind of ship hydraulic steering mechanism |
| CN110219851A (en) * | 2019-04-02 | 2019-09-10 | 台州贝力特机械有限公司 | A kind of piston guide structure of hydraulic breaking hammer |
| CN110219334A (en) * | 2019-04-02 | 2019-09-10 | 台州贝力特机械有限公司 | A kind of hydraulic breaking hammer |
| CN111375182A (en) * | 2020-04-24 | 2020-07-07 | 武汉尚诚源健康科技有限公司 | Expiration intensity trainer |
| CN112727513A (en) * | 2021-01-19 | 2021-04-30 | 中国煤炭科工集团太原研究院有限公司 | Anchor drilling machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080015796A1 (en) * | 2006-07-05 | 2008-01-17 | Stabilus Gmbh | Piston-cylinder unit with diagnostic unit |
| CN101498327A (en) * | 2009-02-27 | 2009-08-05 | 武汉科技大学 | Oil film supporting servo hydraulic cylinder |
| CN101725588A (en) * | 2009-11-10 | 2010-06-09 | 武汉科技大学 | Hydraulic cylinder with clearance sealed type deformed piston |
| CN102032236A (en) * | 2011-01-17 | 2011-04-27 | 江阴市洪腾机械有限公司 | Hydraulic cylinder of double piston rods |
| CN203081896U (en) * | 2013-02-28 | 2013-07-24 | 韶关市伟光液压油缸有限公司 | Servo hydrocylinder |
-
2013
- 2013-02-28 CN CN201310064013.0A patent/CN103174699B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080015796A1 (en) * | 2006-07-05 | 2008-01-17 | Stabilus Gmbh | Piston-cylinder unit with diagnostic unit |
| CN101498327A (en) * | 2009-02-27 | 2009-08-05 | 武汉科技大学 | Oil film supporting servo hydraulic cylinder |
| CN101725588A (en) * | 2009-11-10 | 2010-06-09 | 武汉科技大学 | Hydraulic cylinder with clearance sealed type deformed piston |
| CN102032236A (en) * | 2011-01-17 | 2011-04-27 | 江阴市洪腾机械有限公司 | Hydraulic cylinder of double piston rods |
| CN203081896U (en) * | 2013-02-28 | 2013-07-24 | 韶关市伟光液压油缸有限公司 | Servo hydrocylinder |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454765A (en) * | 2014-12-31 | 2015-03-25 | 太原科技大学 | Designing method of constant-pressure oil supply type load-deflection resistance horizontal type servo oil cylinder |
| CN104454765B (en) * | 2014-12-31 | 2016-04-06 | 太原科技大学 | A kind of level pressure oil feeding type anti-bias load horizontal servo oil cylinder design method |
| CN105952710A (en) * | 2016-07-12 | 2016-09-21 | 天津优瑞纳斯液压机械有限公司 | High frequency response low friction servo hydraulic cylinder |
| CN109154311A (en) * | 2016-10-07 | 2019-01-04 | 梅特内尔公司 | Gas booster with lubricating action |
| CN108194450A (en) * | 2017-12-29 | 2018-06-22 | 宁波海天金属成型设备有限公司 | The oil cylinder for preventing cylinder piston rod from leaking |
| CN109515673A (en) * | 2018-10-30 | 2019-03-26 | 武汉船用机械有限责任公司 | A kind of ship hydraulic steering mechanism |
| CN110219851A (en) * | 2019-04-02 | 2019-09-10 | 台州贝力特机械有限公司 | A kind of piston guide structure of hydraulic breaking hammer |
| CN110219334A (en) * | 2019-04-02 | 2019-09-10 | 台州贝力特机械有限公司 | A kind of hydraulic breaking hammer |
| CN110219851B (en) * | 2019-04-02 | 2024-04-26 | 台州贝力特机械有限公司 | Piston guide structure of hydraulic breaking hammer |
| CN110219334B (en) * | 2019-04-02 | 2024-05-14 | 台州贝力特机械有限公司 | Hydraulic breaking hammer |
| CN111375182A (en) * | 2020-04-24 | 2020-07-07 | 武汉尚诚源健康科技有限公司 | Expiration intensity trainer |
| CN112727513A (en) * | 2021-01-19 | 2021-04-30 | 中国煤炭科工集团太原研究院有限公司 | Anchor drilling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103174699B (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103174699A (en) | Servo hydraulic cylinder | |
| CN203081896U (en) | Servo hydrocylinder | |
| CN102278479A (en) | Y-shaped sealing unit | |
| CN202280687U (en) | Plunger oil cylinder | |
| CN103758723A (en) | Air pump of engineering machinery braking system | |
| CN203822744U (en) | Super-huge type ultrahigh-pressure hydraulic cylinder | |
| CN103603842B (en) | A kind of compound start cylinder for vibration test and loading method thereof | |
| KR101673945B1 (en) | Cylinder tube and cooling jacket cylinder | |
| CN102207114B (en) | Two-stage servo hydraulic cylinder | |
| CN202203415U (en) | Sealing unit and sealing device comprising the same | |
| CN103671344B (en) | Pumping oil cylinder and pumping equipment comprising same | |
| CN103321892A (en) | Elastic piston and pumping system and engineering machine with elastic piston | |
| CN104358735A (en) | Lifting hydraulic oil cylinder | |
| CN202338670U (en) | Valve spool of pneumatic high pressure lubricator | |
| CN202251235U (en) | Oil tank sealing and static pressure supporting device for high-frequency vibration | |
| CN102954061B (en) | Hydraulic control type composite piston assembly | |
| CN204253494U (en) | High speed and high pressure injection machine die cylinder | |
| CN203702477U (en) | Air booster pump of engineering mechanical braking system | |
| CN202926749U (en) | Short-stroke precise guiding oil cylinder | |
| CN214101213U (en) | Magnetic suspension type engineering cylinder | |
| CN206816594U (en) | High voltagehigh frequency hydraulic jack | |
| CN101482180A (en) | Multi-n shaped combined sealing device | |
| CN105508611A (en) | Stuffing sealing structure and plunger pump with same | |
| CN204267420U (en) | A kind of lifting hydraulic jack | |
| CN111022431A (en) | Sealing device of piston rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |