CN201496343U - Guide sleeve for hydraulic oil cylinder - Google Patents
Guide sleeve for hydraulic oil cylinder Download PDFInfo
- Publication number
- CN201496343U CN201496343U CN2009203063327U CN200920306332U CN201496343U CN 201496343 U CN201496343 U CN 201496343U CN 2009203063327 U CN2009203063327 U CN 2009203063327U CN 200920306332 U CN200920306332 U CN 200920306332U CN 201496343 U CN201496343 U CN 201496343U
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- CN
- China
- Prior art keywords
- guide sleeve
- embedded copper
- copper sheathing
- oil cylinder
- hydraulic oil
- 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.)
- Expired - Fee Related
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Abstract
A guide sleeve for a hydraulic oil cylinder comprises a guide sleeve body. A thread matched with a thread on the inner wall of a hydraulic oil cylinder and a sealing washer groove are formed on the outer surface of the guide sleeve body in sequence; a rubber seal ring is mounted in the sealing washer groove; a support ring is also arranged on the outer surface of the guide sleeve body; and a fixing screw hole is formed at the end part of the guide sleeve body, and corresponds to a screw hole at the end part of the hydraulic oil cylinder. The guide sleeve is characterized in that an embedded copper sleeve is arranged on the inner wall of the guide sleeve body; a set screw is arranged at the outer end of the embedded copper sleeve; and a spiral oil groove is formed on the inner surface of the embedded copper sleeve. The utility model has the advantages of stable and reliable work, long service life and low maintenance cost.
Description
Technical field
The utility model relates to a kind of hydraulic jack guide sleeve, relates in particular to a kind of embedded copper sleeve type hydraulic oil cylinder guide sleeve.
Background technique
Conventional hydraulic oil cylinder guide sleeve adopts the guide ring support piston bar structure of PTFE bronze composite material, and bearing capacity is less than 15N/mm
2Hydraulic jack is under the situation that level is installed, if piston rod bears the big or diameter of piston rod of lateral load when surpassing 200mm, the support ring of the guide sleeve of this structure is easy to take place uneven wear under lateral load and piston rod deadweight effect, and then cause the uneven wear of all Sealings, have a strong impact on seal durability, even cause hydraulic jack hydraulic fluid leak to occur.Working life of Sealing of adopting this structure according to incompletely statistics is generally in 1～3 year.In addition, support ring can produce excessive surface pressure under lateral load and piston rod deadweight effect, and support ring is in uneven wear, and the slip surface oil-break causes creeping and shaking of hydraulic jack.
The model utility content
The utility model purpose is in order to overcome the above-mentioned defective that prior art exists, to provide a kind of seal durability long, can preventing the hydraulic jack guide sleeve that hydraulic jack is creeped and shaken.
The purpose of this utility model is achieved through the following technical solutions: it comprises the guide sleeve body, this external surface of guide sleeve is provided with screw thread, the sealing gasket ring recess that matches with hydraulic oil cylinder barrel inner thread successively, in the sealing gasket ring recess rubber seal is housed, this external surface of guide sleeve also is provided with support ring, the guide sleeve body end is provided with fixing threaded hole, and fixing threaded hole is corresponding with the screw of hydraulic oil cylinder barrel end; The guide sleeve inner body wall is provided with embedded copper sheathing, and embedded copper sheathing outer end is provided with Cock screw, and embedded copper sheathing internal surface is provided with helical oil groove.
The preferred circular arc in described helical oil groove cross section, pitch are preferably 22-26mm (preferred 24mm), and groove depth is preferably 0.6-1.0mm (preferred 0.8mm).
The utility model, owing to be full of lubricant oil in the helical oil groove of embedded copper sheathing internal surface, lubrication has been played in relative movement to piston rod and embedded copper sheathing, reduced the frictional force between piston rod and the embedded copper sheathing internal surface, reduced piston rod, embedded copper sheathing and support ring between limit wearing and tearing, significantly improve seal durability, promote the reliability of hydraulic jack, save user's maintenance cost.Simultaneously, this structure has increased the area of contact of piston rod and embedded copper sheathing internal surface, has solved hydraulic jack creeping and problem such as shake under the lateral load effect.
Description of drawings
Fig. 1 is the utility model hydraulic jack guide sleeve example structure schematic representation.
Fig. 2 is an embedded copper sheathing partial enlarged drawing among Fig. 1.
Fig. 3 is hydraulic jack guide sleeve embodiment shown in Figure 1 and hydraulic jack assembling schematic representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
With reference to accompanying drawing, present embodiment comprises guide sleeve body 12, guide sleeve body 12 outer surfaces are provided with screw thread 2, the sealing gasket ring recess 4 that matches with hydraulic oil cylinder barrel 8 inner threads successively, rubber seal 10 is housed in the sealing gasket ring recess 4, guide sleeve body 12 outer surfaces also are provided with support ring 5, guide sleeve body 12 ends are provided with fixing threaded hole 6, and fixing threaded hole 6 is corresponding with the screw of hydraulic oil cylinder barrel 8 ends; Guide sleeve body 12 inwalls are provided with embedded copper sheathing 3, and embedded copper sheathing 3 outer ends are provided with Cock screw 1, and embedded copper sheathing 3 internal surfaces are provided with helical oil groove 13.
Described embedded copper sheathing 3 is selected bronze casting (ZQAL9-4) for use.
Assembling with hydraulic jack: with the described embedded copper sleeve type hydraulic oil cylinder guide sleeve hydraulic oil cylinder barrel 8 of packing into, the piston rod 9 that is connected with piston 7 in the hydraulic oil cylinder barrel 8 passes embedded copper sheathing 3 and support ring 5, by set screw 11 embedded copper sleeve type hydraulic oil cylinder guide sleeve is fixed in hydraulic oil cylinder barrel 8 walls.
During present embodiment work, when the pressure on piston 7 both sides is inconsistent, under action of pressure, piston 7 drives piston rod 9 and moves together, produce friction between piston rod 9 and embedded copper sheathing 3 internal surfaces, owing to be full of lubricant oil in the helical oil groove 13 of embedded copper sheathing 3 internal surfaces, lubrication has been played in relative movement to piston rod 9 and embedded copper sheathing 3, reduced the frictional force between piston rod 9 and embedded copper sheathing 3 internal surfaces, reduced piston rod 9, embedded copper sheathing 3 and support ring 5 between limit wearing and tearing, weakened the uneven wear effect; Simultaneously, this embedded copper sleeve type hydraulic oil cylinder guide sleeve has increased the area of contact of piston rod 9 with embedded copper sheathing 3 internal surfaces, eliminate the oil-break phenomenon between slip surface, solved hydraulic jack creeping and jitter problem under the lateral load effect, improved the maximum load of piston rod 9.
With under same operating mode, the utility model bearing capacity reaches 100N/mm
2More than, seal durability reaches 3～5 years.
Claims (4)
1. hydraulic jack guide sleeve, comprise the guide sleeve body, this external surface of guide sleeve is provided with screw thread, the sealing gasket ring recess suitable with hydraulic oil cylinder barrel inner thread successively, in the sealing gasket ring recess rubber seal is housed, this external surface of guide sleeve also is provided with support ring, the guide sleeve body end is provided with fixing threaded hole, fixing threaded hole is corresponding with the screw of hydraulic oil cylinder barrel end, it is characterized in that: the guide sleeve inner body wall is provided with embedded copper sheathing, embedded copper sheathing outer end is provided with Cock screw, and embedded copper sheathing internal surface is provided with helical oil groove.
2. hydraulic jack guide sleeve according to claim 1 is characterized in that: embedded copper sheathing is a bronze casting.
3. hydraulic jack guide sleeve according to claim 1 and 2 is characterized in that: the helical oil groove cross section of embedded copper sheathing internal surface is a circular arc, pitch 22-26mm, and groove depth is 0.6-1.0mm.
4. hydraulic jack guide sleeve according to claim 3 is characterized in that: the cross section is the helical oil groove of circular arc, and pitch is 24mm, and groove depth is 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203063327U CN201496343U (en) | 2009-07-17 | 2009-07-17 | Guide sleeve for hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203063327U CN201496343U (en) | 2009-07-17 | 2009-07-17 | Guide sleeve for hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496343U true CN201496343U (en) | 2010-06-02 |
Family
ID=42439551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203063327U Expired - Fee Related CN201496343U (en) | 2009-07-17 | 2009-07-17 | Guide sleeve for hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496343U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040936A (en) * | 2016-07-29 | 2016-10-26 | 宜兴市鑫锤锻压设备有限公司 | Hammer rod guide sleeve of air hammer |
| CN106481615A (en) * | 2016-12-01 | 2017-03-08 | 三集团有限公司 | A kind of sealing structure, oil cylinder and wind-driven generator |
| CN107693284A (en) * | 2016-09-19 | 2018-02-16 | 成都测迪森生物科技有限公司 | Ptfe composite material for guide sleeve skeleton in operating table hydraulic system |
-
2009
- 2009-07-17 CN CN2009203063327U patent/CN201496343U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040936A (en) * | 2016-07-29 | 2016-10-26 | 宜兴市鑫锤锻压设备有限公司 | Hammer rod guide sleeve of air hammer |
| CN107693284A (en) * | 2016-09-19 | 2018-02-16 | 成都测迪森生物科技有限公司 | Ptfe composite material for guide sleeve skeleton in operating table hydraulic system |
| CN106481615A (en) * | 2016-12-01 | 2017-03-08 | 三集团有限公司 | A kind of sealing structure, oil cylinder and wind-driven generator |
| CN106481615B (en) * | 2016-12-01 | 2018-07-13 | 三一集团有限公司 | A kind of sealing structure, oil cylinder and wind-driven generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHANGSHA DIPU MECHANICAL TECHNOLOGY CO., LTD. Assignor: Li Xinqiao Contract record no.: 2012430000005 Denomination of utility model: Guide sleeve of hydraulic oil cylinder Granted publication date: 20100602 License type: Exclusive License Record date: 20120227 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: CHANGSHA DIPU MECHANICAL TECHNOLOGY CO., LTD. Assignor: Li Xinqiao Contract record no.: 2012430000005 Date of cancellation: 20131115 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20130717 |