CN205331117U - Single -action hydrocylinder - Google Patents
Single -action hydrocylinder Download PDFInfo
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- CN205331117U CN205331117U CN201620103479.6U CN201620103479U CN205331117U CN 205331117 U CN205331117 U CN 205331117U CN 201620103479 U CN201620103479 U CN 201620103479U CN 205331117 U CN205331117 U CN 205331117U
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- rod
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- ring
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Abstract
Single -action hydrocylinder, including cylinder body, piston and setting the piston front end and with the integrative body of rod that takes shape of piston, the piston passes through piston guide support ring and cylinder body inner wall guide mating, has between the body of rod and the cylinder body between supporting seat and supporting seat and the body of rod through body of rod guide support ring guide mating, has end cover, its characterized in that between the opening part of cylinder body and the body of rod the inner wall of piston and cylinder body between seal the sealing washer with AQ and seal through this special sealing washer that seals, this special seal sealing washer and a AQ sealing washer setting in the piston guide support ring left and right sides, this special seal no pole chamber that sealing washer is close to the cylinder body, the AQ sealing washer be close to the cylinder body have a pole chamber, inject hydraulic pressure oil into to the no pole chamber of cylinder body, the body of rod stretches out, the body of rod returns and contracts under the effect of external force. The utility model discloses a single -action hydrocylinder improves piston seal structure, avoids producing being stranded and presses the phenomenon, extension hydraulic cylinder's life.
Description
Technical field
This utility model relates to technical field of hydraulic oil cylinder, particularly to a kind of single-action hydrocylinder。
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 single-action hydrocylinder, refer to that the motion oil pressure in one of them direction realizes, by the oil cylinder of deadweight or the external force such as spring during return, two chambeies of this oil cylinder only have one end to have oil, the other end then with air contact。The piston sealing structure of single-action hydrocylinder has various ways, a support system for line upkeep engineering truck needs to use under heavy load, the operating mode of long dwell time mostly, therefore, the Bidirectional seal structure of piston seal form many employings multilamellar of the single-action hydrocylinder in support system, easily produce tired pressure phenomenon between layers, namely when piston moves back and forth, cause that on piston, between two-layer sealing, fluid is cumulative, form high pressure, the sealing structure of piston is formed pressure, and ultimately resulting in sealing structural failure, the contracting in service life of hydraulic jack is weak。
Utility model content
The single-action hydrocylinder that this utility model provides, improves piston sealing structure, it is to avoid produces tired pressure phenomenon, extends the service life of hydraulic jack。
The technical solution of the utility model is: single-action hydrocylinder, including cylinder body, piston and be arranged on piston nose and the body of rod integrally formed with piston, piston props up pushing out ring by piston guide and coordinates with inboard wall of cylinder block guiding, there is between the body of rod with cylinder body supporting seat and coordinated by body of rod guide support ring guiding between supporting seat with the body of rod, between opening part and the body of rod of cylinder body, there is end cap, it is characterized in that being sealed seal by this spy between described piston and the inwall of cylinder body and AQ is sealed seal and seals, described Si Te is sealed seal and AQ is sealed seal and is arranged on piston guide and props up the pushing out ring left and right sides, described Si Te is sealed the seal rodless cavity near cylinder body, described AQ sealing ring is near the rod chamber of cylinder body, hydraulic oil is injected to the rodless cavity of cylinder body, the body of rod stretches out, body of rod retraction under the effect of external force。
Further, described Si Te is sealed the seal O by high abrasion teflin ring with as press member and forms。
Further, described AQ is sealed seal and is made up of high abrasion teflon seal ring, polyurethane rubber star sealing ring and the O as press member。
Further, described piston, near having interior dust ring between one end and cylinder body of the body of rod, has outer dust ring, equipped with Ventilated cap on the cylinder body of rod chamber side between described end cap and the body of rod。
Further, the outer surface of the inner wall surface of described cylinder body and integrally formed piston and the body of rod is chromium coating, and the thickness of described chromium coating is 30 μm, and hardness is 900HV～1100HV, and surface roughness is less than or equal to 0.4 μm。
Further, described piston guide props up the pushing out ring axiality with body of rod guide support ring less than or equal to 0.05mm。
Single-action hydrocylinder of the present utility model, it is sealed seal by this spy between piston and cylinder body and AQ is sealed seal and seals, Si Te is sealed seal and AQ is sealed seal composition Series seal structure, wherein this spy is sealed the seal rodless cavity near cylinder body, the first seal structures as piston, 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 cylinder body in stretching out stroke minimum, the fluid being attached on cylinder body in retract stroke is drawn back in rodless cavity again, avoid Si Te to be sealed seal and AQ is sealed between seal and produces tired pressure phenomenon。AQ is sealed seal and has reliable two way seal effect and low friction, high pressure resistant and feature at high speed as the second seal structures of piston, strong adaptability to working condition, the operating mode instructions for use of hydraulic jack heavy load, long dwell time can be met, piston 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 drawings and Examples, this utility model is further described。
As shown in Figure 1, single-action hydrocylinder, including cylinder body 1, piston 2 and be arranged on piston 2 front end and the body of rod 3 integrally formed with piston 2, piston 2 props up pushing out ring 21 by piston guide and coordinates with cylinder body 1 inwall guiding, there is between the body of rod 3 with cylinder body 1 supporting seat 4 and coordinated by body of rod guide support ring 31 guiding between supporting seat 4 with the body of rod 3, between opening part and the body of rod 3 of cylinder body 1, there is end cap 5, it is characterized in that being sealed seal 6 by this spy between described piston 2 and the inwall of cylinder body 1 and AQ is sealed seal 7 and seals, described Si Te is sealed seal 6 and AQ is sealed seal 7 and is arranged on piston guide and props up pushing out ring 21 left and right sides, described Si Te is sealed the seal 6 rodless cavity near cylinder body 1, described AQ sealing ring 7 is near the rod chamber of cylinder body 1, hydraulic oil is injected to the rodless cavity of cylinder body 1, the body of rod 3 stretches out, under the effect of external force, the body of rod 3 bounces back。Described Si Te is sealed the seal 6 O by high abrasion teflin ring with as press member and forms。Described AQ is sealed seal 7 and is made up of high abrasion teflon seal ring, polyurethane rubber star sealing ring and the O as press member。
Described piston 2 is near having interior dust ring 22 between one end of the body of rod 3 and cylinder body 1, prevent dust a small amount of in rod chamber from entering rodless cavity, there is between described end cap 5 and the body of rod 3 outer dust ring 32, prevent external dust from entering in hydraulic jack, equipped with Ventilated cap 11 on the cylinder body of rod chamber side, Ventilated cap 11 can air inlet, give vent to anger, air filtering can be crossed again, it is prevented that dust enters in hydraulic jack。The inner wall surface of described cylinder body 1 and the outer surface of integrally formed piston 2 and the body of rod 3 are chromium coating, the thickness of described chromium coating is 30 μm, hardness is 900HV～1100HV, surface roughness, less than or equal to 0.4 μm, reduces the frictional force between cylinder body 1 and piston 2 and body rod 3 and supporting seat 4。Described piston guide props up pushing out ring 21 axiality with body of rod guide support ring 31 less than or equal to 0.05mm, it is ensured that piston 2 and the body of rod 3 are stretched, contracting time will not produce catching phenomenon。
Above-described single-action hydrocylinder, it is sealed seal 6 by this spy between piston 2 and cylinder body 1 and AQ is sealed seal 7 and seals, Si Te is sealed seal 6 and AQ is sealed seal 7 and forms Series seal structure, wherein this spy is sealed the seal 6 rodless cavity near cylinder body 1, the first seal structures as piston 2, Si Te is sealed seal 6 for single-acting sealing member, 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 cylinder body 1 in stretching out stroke minimum, the fluid being attached on cylinder body 1 in retract stroke is drawn back in rodless cavity again, avoid Si Te to be sealed seal 6 and AQ is sealed between seal 7 and produces tired pressure phenomenon。AQ is sealed seal 7 and has reliable two way seal effect and low friction, high pressure resistant and feature at high speed as the second seal structures of piston, strong adaptability to working condition, the operating mode instructions for use of hydraulic jack heavy load, long dwell time can be met, piston 2 static and dynamically under all keep good sealing effect, the longer service life of hydraulic jack。
Claims (6)
1. single-action hydrocylinder, including cylinder body (1), piston (2) and be arranged on piston (2) front end and the body of rod (3) integrally formed with piston (2), piston (2) props up pushing out ring (21) by piston guide and coordinates with cylinder body (1) inwall guiding, there is between the body of rod (3) with cylinder body (1) supporting seat (4) and coordinated by body of rod guide support ring (31) guiding between supporting seat (4) with the body of rod (3), between opening part and the body of rod (3) of cylinder body (1), there is end cap (5), it is characterized in that being sealed seal (6) by this spy between described piston (2) and the inwall of cylinder body (1) and AQ is sealed seal (7) and seals, described Si Te is sealed seal (6) and AQ is sealed seal (7) and is arranged on piston guide and props up pushing out ring (21) left and right sides, described Si Te is sealed the seal (6) rodless cavity near cylinder body (1), described AQ sealing ring (7) is near the rod chamber of cylinder body (1), hydraulic oil is injected to the rodless cavity of cylinder body (1), the body of rod (3) stretches out, the body of rod (3) retraction under the effect of external force。
2. single-action hydrocylinder according to claim 1, it is characterised in that described Si Te is sealed the seal (6) O by high abrasion teflin ring with as press member and forms。
3. single-action hydrocylinder according to claim 2, it is characterised in that described AQ is sealed seal (7) and is made up of high abrasion teflon seal ring, polyurethane rubber star sealing ring and the O as press member。
4. single-action hydrocylinder according to claim 3, it is characterized in that described piston (2) has interior dust ring (22) between one end and the cylinder body (1) of the body of rod (3), between described end cap (5) and the body of rod (3), there is outer dust ring (32), equipped with Ventilated cap (11) on the cylinder body of rod chamber side。
5. single-action hydrocylinder according to claim 4, it is characterized in that the outer surface of the inner wall surface of described cylinder body (1) and integrally formed piston (2) and the body of rod (3) is chromium coating, the thickness of described chromium coating is 30 μm, hardness is 900HV～1100HV, and surface roughness is less than or equal to 0.4 μm。
6. single-action hydrocylinder according to claim 5, it is characterised in that described piston guide props up the pushing out ring (21) axiality with body of rod guide support ring (31) less than or equal to 0.05mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103479.6U CN205331117U (en) | 2016-02-02 | 2016-02-02 | Single -action hydrocylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620103479.6U CN205331117U (en) | 2016-02-02 | 2016-02-02 | Single -action hydrocylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331117U true CN205331117U (en) | 2016-06-22 |
Family
ID=56317724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620103479.6U Expired - Fee Related CN205331117U (en) | 2016-02-02 | 2016-02-02 | Single -action hydrocylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205331117U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288950A (en) * | 2017-06-29 | 2017-10-24 | 无锡市京锡冶金液压机电有限公司 | A kind of strong single-acting cylinder of dirt exclusion capabilities |
| CN107435669A (en) * | 2017-08-17 | 2017-12-05 | 浙江中控太阳能技术有限公司 | A kind of push rod with cleaning apparatus for self |
| CN110821912A (en) * | 2019-11-12 | 2020-02-21 | 中航飞机起落架有限责任公司 | Single-acting tension cylinder air exchange system |
-
2016
- 2016-02-02 CN CN201620103479.6U patent/CN205331117U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288950A (en) * | 2017-06-29 | 2017-10-24 | 无锡市京锡冶金液压机电有限公司 | A kind of strong single-acting cylinder of dirt exclusion capabilities |
| CN107435669A (en) * | 2017-08-17 | 2017-12-05 | 浙江中控太阳能技术有限公司 | A kind of push rod with cleaning apparatus for self |
| CN110821912A (en) * | 2019-11-12 | 2020-02-21 | 中航飞机起落架有限责任公司 | Single-acting tension cylinder air exchange system |
| CN110821912B (en) * | 2019-11-12 | 2021-06-22 | 中航飞机起落架有限责任公司 | Single-acting tension cylinder air exchange system |
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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 |