CN205331118U - Two effect hydraulic cylinder - Google Patents
Two effect hydraulic cylinder Download PDFInfo
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- CN205331118U CN205331118U CN201620103481.3U CN201620103481U CN205331118U CN 205331118 U CN205331118 U CN 205331118U CN 201620103481 U CN201620103481 U CN 201620103481U CN 205331118 U CN205331118 U CN 205331118U
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Abstract
Two effect hydraulic cylinder, including cylinder body and two integral piston rods, an integral piston rod stretches out from the one end opening of cylinder body, another integral piston rod stretches out from the other end opening of cylinder body, integral piston rod comprises the piston and the body of rod, through piston guide support ring guide mating between piston and the cylinder body, and come the circle sealed through check, the supporting seat is equipped with between the body of rod and the cylinder body, through body of rod guide support ring guide mating between the supporting seat and the body of rod, it is sealed through this special sealing washer of first layer and this special sealing washer of the second floor between the supporting seat and the body of rod, this special inboard of sealing the sealing washer setting at this special sealing washer of the second floor of first layer, this special inboard of sealing the sealing washer setting at body of rod guide support ring of the second floor, it is sealed through O shape circle between supporting seat and the cylinder body. The utility model discloses a two effect hydraulic cylinder, seal structure improves to the piston rod, avoids producing being stranded and presses the phenomenon, prolongs hydraulic cylinder's life.
Description
Technical field
This utility model relates to technical field of hydraulic oil cylinder, relates generally to a kind of double-act-ing hydraulic J-Horner。
Background technology
The maintenance of rail line needs substantial amounts of line upkeep engineering truck with maintenance, the support system on line upkeep engineering truck mostly with hydraulic jack as executive component, it has the feature such as simple in construction, reliable operation。Hydraulic jack is different according to its structure, can be divided into multiple, wherein the hydraulic jack of double-piston double-rod structure is the one of double-action hydraulic cylinder structure, piston rod is all stretched out at the two ends of its cylinder body, when pressure oil injects the rodless cavity between two-piston, the piston rod at cylinder body two ends stretches out simultaneously, when pressure oil injects the rod chamber outside piston, this piston rod retraction then, two-way ram hydraulic cylinder such as two disjunctors, the delivery stroke of both direction is provided, ties up the hydraulic motion outut device of a support system of engineering truck as circuit。The sealing property of double acting hydraulic cylinder piston rod seal directly decides the serviceability of whole hydraulic jack。A support system for line upkeep engineering truck needs to use under heavy load, the operating mode of long dwell time mostly, the Bidirectional seal structure of piston rod packing form many employings multilamellar of double acting hydraulic cylinder, easily produce tired pressure phenomenon between layers, namely when piston rod moves back and forth, between causing piston rod two-layer to seal, fluid is cumulative, forms high pressure, and the sealing structure of piston rod is formed pressure, and ultimately resulting in sealing structural failure, the contracting in service life of hydraulic jack is weak。
Utility model content
The double-act-ing hydraulic J-Horner that this utility model provides, improves piston rod seal, it is to avoid produces tired pressure phenomenon, extends the service life of hydraulic jack。
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: double-act-ing hydraulic J-Horner, including cylinder body and two one-piece piston bars, the equal opening in two ends of cylinder body, a piece one-piece piston bar stretches out from the one end open of cylinder body, another root one-piece piston bar stretches out from the other end opening of cylinder body, cylinder body has the oil circuit hole one of the rodless cavity passed between two one-piece piston bars and passes into the oil circuit hole two of the rod chamber to rodless cavity both sides, one-piece piston bar is made up of piston and the body of rod, prop up pushing out ring guiding by piston guide between piston with cylinder body to coordinate, and enclose sealing by lattice, equipped with supporting seat between the body of rod and cylinder body, coordinated by body of rod guide support ring guiding between supporting seat with the body of rod, equipped with end cap between opening part and the body of rod of cylinder body, it is characterized in that being sealed seal by this spy of ground floor between described supporting seat and the body of rod and this spy of the second layer is sealed seal and seals, this spy of described ground floor is sealed seal and is arranged on this spy of the second layer and is sealed the inner side of seal, this spy of the second layer is sealed seal and is arranged on the inner side of body of rod guide support ring, seal with O ring is passed through between described supporting seat and cylinder body, hydraulic oil is injected rodless cavity by oil circuit hole one, two one-piece piston bars stretch out simultaneously, hydraulic oil is injected rod chamber by oil circuit hole two, two one-piece piston bars bounce back simultaneously。
Further, this spy of described ground floor is sealed the seal O by teflin ring with as press member and forms, and this spy of the described second layer is sealed seal and is made up of high abrasion polyurethane rubber seal and the O as press member。
Further, the material of described cylinder body is Q345B low-carbon alloy steel, and one-piece piston pole stock matter is 40Cr steel。
Further, the surface roughness of the inwall of described cylinder body is less than or equal to 0.4 μm。
Further, described one-piece piston bar surface spraying Investigation for Super-fine Cermets powder bed, the hardness of described Investigation for Super-fine Cermets powder bed is be more than or equal to 900HV, and surface roughness is less than or equal to 0.1 μm。
Further, described piston guide props up the axiality of pushing out ring and body of rod guide support ring less than or equal to 0.05mm。
The double-act-ing hydraulic J-Horner that this practicality is novel, for double-piston double-rod structure, it is sealed seal by this spy of ground floor between supporting seat and the body of rod and this spy of the second layer is sealed seal and seals, wherein this spy of ground floor is sealed seal near rodless cavity, the first seal structures as the body of rod, it is single-acting sealing member that Si Te is sealed seal, its sealing property is to be produced by the hydraulic power characteristic of sealing member, seal edge produces very steep contact pressure gradient in high-pressure side, and produce shallower contact pressure gradient in low-pressure side, this controlled barometric gradient makes the fluid being attached on the body of rod in stretching out stroke minimum, the fluid being attached on the body of rod in retract stroke is drawn back in rodless cavity again, avoid this spy of ground floor to be sealed seal and this spy of the second layer is sealed between seal and produces tired pressure phenomenon。This spy of ground floor is sealed seal and this spy of the second layer is sealed seal composition Series seal structure, body of rod sealing property is made to be greatly improved, the operating mode instructions for use of hydraulic jack heavy load, long dwell time can be met, the body of rod static and dynamically under all keep good sealing effect, the longer service life of hydraulic jack。
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Detailed description of the invention
Following by accompanying drawing 1 and embodiment, this utility model is further described。
Double-act-ing hydraulic J-Horner, including cylinder body 1 and two one-piece piston bars 2, the equal opening in two ends of cylinder body 1, a piece one-piece piston bar 2 stretches out from the one end open of cylinder body 1, another root one-piece piston bar 2 stretches out from the other end opening of cylinder body 1, cylinder body 1 has the oil circuit hole 1 of the rodless cavity passed between two one-piece piston bars 2 and passes into the oil circuit hole 2 12 of the rod chamber to rodless cavity both sides, one-piece piston bar 2 is made up of piston 21 and the body of rod 22, prop up pushing out ring 3 guiding by piston guide between piston 21 with cylinder body 1 to coordinate, and enclose 4 sealings by lattice, equipped with supporting seat 5 between the body of rod 22 and cylinder body 1, coordinated by body of rod guide support ring 6 guiding between supporting seat 5 with the body of rod 22, equipped with end cap 7 between opening part and the body of rod 22 of cylinder body 1, it is characterized in that being sealed seal 8 by this spy of ground floor between described supporting seat 5 and the body of rod 22 and this spy of the second layer is sealed seal 9 and seals, this spy of described ground floor is sealed seal 8 and is arranged on this spy of the second layer and is sealed the inner side of seal 9, this spy of the second layer is sealed seal 9 and is arranged on the inner side of body of rod guide support ring 6, sealed by O 10 between described supporting seat 5 and cylinder body 1, hydraulic oil is injected rodless cavity by oil circuit hole 1, two one-piece piston bars 2 stretch out simultaneously, hydraulic oil is injected rod chamber by oil circuit hole 2 12, two one-piece piston bars 2 bounce back simultaneously。
This spy of described ground floor is sealed the seal 8 O by teflin ring with as press member and forms, and this spy of the described second layer is sealed seal 8 and is made up of high abrasion polyurethane rubber seal and the O as press member。This spy of ground floor is sealed seal and adopts teflin ring, the friction of its generation is little, has good wear-resisting and anti-agent and goes out performance, it is allowed to very thin lubricating oil film passes through under extreme operating condition, ensure that this spy of the second layer is sealed the necessary lubrication of seal, increase the service life。Polytetrafluoroethylsealing sealing ring material is relatively hard, it is adaptable to seal high pressure；High abrasion polyurethane Rubber seal material is relatively soft, has good elasticity, and when beat occurs the body of rod 22, tracing ability is good, therefore good airproof performance。
The material of described cylinder body 1 is Q345B low-carbon alloy steel, and one-piece piston bar 2 material is 40Cr steel。The surface roughness of the inwall of described cylinder body 1 is less than or equal to 0.4 μm。Described one-piece piston bar 2 surface spraying Investigation for Super-fine Cermets powder bed, the hardness of described Investigation for Super-fine Cermets powder bed is be more than or equal to 900HV, surface roughness, less than or equal to 0.1 μm, reduces the frictional force between cylinder body 1 and piston 21 and body rod 22 and supporting seat 5。Described piston guide props up the axiality of pushing out ring 3 and body of rod guide support ring 6 less than or equal to 0.05mm, it is ensured that one-piece piston bar 2 is stretched, contracting time will not produce catching phenomenon。
Above-described double-act-ing hydraulic J-Horner, for double-piston double-rod structure, it is sealed seal 8 by this spy of ground floor between the body of rod 22 and supporting seat 5 and this spy of the second layer is sealed seal 9 and seals, wherein this spy of ground floor is sealed seal 8 near rodless cavity, the first seal structures as the body of rod 22, it is single-acting sealing member that Si Te is sealed seal, its sealing property is to be produced by the hydraulic power characteristic of sealing member, seal edge produces very steep contact pressure gradient in high-pressure side, and produce shallower contact pressure gradient in low-pressure side, this controlled barometric gradient makes the fluid being attached on the body of rod 22 in stretching out stroke minimum, the fluid being attached on the body of rod 22 in retract stroke is drawn back in rodless cavity again, avoid this spy of ground floor to be sealed seal 8 and this spy of the second layer is sealed between seal 9 and produces tired pressure phenomenon。This spy of ground floor is sealed seal 8 and this spy of the second layer is sealed seal 9 and forms Series seal structure, body of rod sealing property is made to be greatly improved, the operating mode instructions for use of hydraulic jack heavy load, long dwell time can be met, the body of rod 22 static and dynamically under all keep good sealing effect, the longer service life of hydraulic jack。
Above in association with accompanying drawing, the technical scheme of this utility model embodiment is completely described; it should be noted that described embodiment is only a part of embodiment of this utility model; make based on the embodiment in this utility model; the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly falls into the scope of this utility model protection。
Claims (6)
1. double-act-ing hydraulic J-Horner, including cylinder body (1) and two one-piece piston bars (2), the equal opening in two ends of cylinder body (1), a piece one-piece piston bar (2) is stretched out from the one end open of cylinder body (1), another root one-piece piston bar (2) stretches out from the other end opening of cylinder body (1), cylinder body (1) has the oil circuit hole one (11) of the rodless cavity passed between two one-piece piston bars (2) and passes into the oil circuit hole two (12) of the rod chamber to rodless cavity both sides, one-piece piston bar (2) is made up of piston (21) and the body of rod (22), prop up pushing out ring (3) guiding by piston guide between piston (21) with cylinder body (1) to coordinate, and enclose (4) sealing by lattice, equipped with supporting seat (5) between the body of rod (22) and cylinder body (1), coordinated by body of rod guide support ring (6) guiding between supporting seat (5) with the body of rod (22), equipped with end cap (7) between opening part and the body of rod (22) of cylinder body (1), it is characterized in that being sealed seal (8) by this spy of ground floor between described supporting seat (5) and the body of rod (22) and this spy of the second layer is sealed seal (9) and seals, this spy of described ground floor is sealed seal (8) and is arranged on this spy of the second layer and is sealed the inner side of seal (9), this spy of the second layer is sealed seal (9) and is arranged on the inner side of body of rod guide support ring (6), sealed by O (10) between described supporting seat (5) and cylinder body (1), hydraulic oil is injected rodless cavity by oil circuit hole one (11), two one-piece piston bars (2) are stretched out simultaneously, hydraulic oil is injected rod chamber by oil circuit hole two (12), two one-piece piston bars (2) bounce back simultaneously。
2. double-act-ing hydraulic J-Horner according to claim 1, it is characterized in that this spy of described ground floor is sealed the seal (8) O by teflin ring with as press member and forms, this spy of the described second layer is sealed seal (8) and is made up of high abrasion polyurethane rubber seal and the O as press member。
3. double-act-ing hydraulic J-Horner according to claim 2, it is characterised in that the material of described cylinder body (1) is Q345B low-carbon alloy steel, and one-piece piston bar (2) material is 40Cr steel。
4. double-act-ing hydraulic J-Horner according to claim 3, it is characterised in that the surface roughness of the inwall of described cylinder body (1) is less than or equal to 0.4 μm。
5. double-act-ing hydraulic J-Horner according to claim 4, it is characterized in that described one-piece piston bar (2) surface spraying Investigation for Super-fine Cermets powder bed, the hardness of described Investigation for Super-fine Cermets powder bed is be more than or equal to 900HV, and surface roughness is less than or equal to 0.1 μm。
6. double-act-ing hydraulic J-Horner according to claim 5, it is characterised in that described piston guide props up the axiality of pushing out ring (3) and body of rod guide support ring (6) less than or equal to 0.05mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103481.3U CN205331118U (en) | 2016-02-02 | 2016-02-02 | Two effect hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103481.3U CN205331118U (en) | 2016-02-02 | 2016-02-02 | Two effect hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331118U true CN205331118U (en) | 2016-06-22 |
Family
ID=56316869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620103481.3U Expired - Fee Related CN205331118U (en) | 2016-02-02 | 2016-02-02 | Two effect hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205331118U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630870A (en) * | 2017-10-11 | 2018-01-26 | 中国长江三峡集团公司 | The hydraulic control system and method for ship lift drive mechanism hydropneumatic type pneumohydraulic spring device |
| CN108953279A (en) * | 2018-08-21 | 2018-12-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of double formula synchronous hydraulic cylinders out of double piston-rod |
| CN110332175A (en) * | 2019-08-14 | 2019-10-15 | 百灵气动科技有限公司 | A kind of four axis cylinders |
-
2016
- 2016-02-02 CN CN201620103481.3U patent/CN205331118U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630870A (en) * | 2017-10-11 | 2018-01-26 | 中国长江三峡集团公司 | The hydraulic control system and method for ship lift drive mechanism hydropneumatic type pneumohydraulic spring device |
| CN108953279A (en) * | 2018-08-21 | 2018-12-07 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of double formula synchronous hydraulic cylinders out of double piston-rod |
| CN110332175A (en) * | 2019-08-14 | 2019-10-15 | 百灵气动科技有限公司 | A kind of four axis cylinders |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20210202 |