CN203067401U - Static pressure balance antifriction sliding supporting oil cylinder - Google Patents
Static pressure balance antifriction sliding supporting oil cylinder Download PDFInfo
- Publication number
- CN203067401U CN203067401U CN 201220668450 CN201220668450U CN203067401U CN 203067401 U CN203067401 U CN 203067401U CN 201220668450 CN201220668450 CN 201220668450 CN 201220668450 U CN201220668450 U CN 201220668450U CN 203067401 U CN203067401 U CN 203067401U
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- piston
- static pressure
- perforation
- pressure piston
- recessed portion
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- Expired - Lifetime
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Abstract
The utility model provides a static pressure balance antifriction sliding supporting oil cylinder which comprises a cylinder body. A piston is installed in the cylinder body. A sliding shoe with a recessed portion recessed inwards at the bottom is installed at the outer end of a piston rod. A static pressure piston is installed in the recessed portion through a perpendicularly arranged spring. The cross sectional area of the recessed portion is slightly smaller than the area of the upper surface of the piston. A radial sealing ring is installed on a side wall of the static pressure piston and placed between the side wall of the static pressure piston and an inner wall of the recessed portion. A first penetrating hole is correspondingly formed in the middle of the piston and the piston rod along the radial direction. A second penetrating hole connected with the first penetrating hole in a communicating mode is formed in the sliding shoe. The first penetrating hole is communicated with an inner cavity of the cylinder body. The second penetrating hole penetrates the inner top face of the recessed portion. A third penetrating hole is formed in the static pressure piston. A bottom sealing ring is installed on an inner side wall at the lower end of the recessed portion and placed between the inner side wall at the lower end of the recessed portion and a side wall at the lower end of the static pressure piston. According to arrangement of the static pressure piston and the static pressure balance unloading principle, positive pressure of a friction pair and an actual equivalent friction coefficient are reduced, friction resistance is reduced and efficiency of transportation with heavy load in a sliding mode is improved.
Description
Technical field
The utility model relates to a kind of support cylinder, particularly a kind of static balance antifriction slippage support cylinder.
Background technique
Supporting weight with the hydraulic lifting cylinder and carry out translation, is mode commonly used in a kind of heavy haul transport.In order to make slipping more smooth, there is antifriction material to reduce surface friction drag in the slipping again at the slippage end face of jacking cylinder usually.Yet, though antifriction material has been arranged again, because the weight of heavy duty is very big, has caused positive pressure quite big, so the frictional force that is subjected in the slipping does not reach effective minimizing because of the effect of antifriction material, the frictional force on the slip plane has still hindered carrying out smoothly of slippage transportation.
The model utility content
The utility model purpose is in order to overcome the deficiencies in the prior art, a kind of static balance antifriction slippage support cylinder is provided, it can reduce positive pressure and the friction factor of friction pair between crawler shoe and the slip plane, thereby effectively reduces surface friction drag, the efficient when improving slippage transportation heavy duty greatly.
In order to achieve the above object, the utility model is by the following technical solutions:
A kind of static balance antifriction slippage support cylinder, comprise cylinder body, in the described cylinder body piston is installed, described piston side wall be equipped with and the inner chamber of cylinder block wall between seal ring, described piston rod outer end is equipped with a crawler shoe, caving in a recess arranged in described crawler shoe bottom, by vertically disposed spring one static pressure piston is installed in described recess, and the cross sectional area of described recess is slightly less than the upper surface area of described piston; Be equipped with on the sidewall of described static pressure piston and the recess madial wall between radial direction seal ring; The radially middle part of described piston and piston rod is corresponding to be provided with first perforation, is provided with first perforation at crawler shoe and is connected second perforation; Described first perforation communicates with inner chamber of cylinder block, and described second perforation runs through the recess inner top surface.Described static pressure piston is provided with the 3rd perforation, described recess lower end madial wall be equipped with and static pressure piston lower end sidewall between the bottom seal ring.
As preferably, the bottom surface of described crawler shoe has antifriction material again.
As preferably, described first perforation is provided with seal ring with the joint of second perforation.
As preferably, described static pressure piston lower surface is coated with a bronze medal layer.
Compared with prior art, the utlity model has following beneficial effect:
The crawler shoe that be equipped with oil cylinder piston bar outer end, the crawler shoe bottom surface has antifriction material again, oil cylinder can be on slide rail smooth and easy sliding.The static pressure piston that is equipped with in the crawler shoe bottom, the inner chamber of static pressure piston and support cylinder is by the perforation Oil Guide that communicates, can form static balance, because the effective active area of static pressure piston is more smaller than the effective active area of oil cylinder piston, therefore the static pressure piston can be with the whole jack-up of crawler shoe, and only can offset most of load that oil cylinder bears, the positive pressure on the crawler shoe friction pair is just remaining very little like this; In addition, because the Oil Guide effect of perforation can make between static pressure piston lower surface and the slip plane and form oil film, so just can reduce the friction factor of the friction pair between crawler shoe and the slip plane greatly; Because diminishing of positive pressure and friction factor, it is a lot of that surface friction drag is reduced, the efficient when improving slide device transportation heavy duty greatly.Bottom seal ring and the radial direction seal ring of static pressure piston have prevented that pressure oil from leaking and the outflow of Residual oil; The static pressure piston also plays the effect that clamps the bottom seal ring.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure:
1-oil cylinder; 2-piston; 21-the first perforation; 22-seal ring; 23-seal ring; 24-piston rod; 3-crawler shoe; 31-the second perforation; 32-seal ring; 33-antifriction material; 4-static pressure piston; 41-the three perforation; 42-radial direction seal ring; 43-bottom seal ring; 44-spring; 45-copper layer.
Now the utility model is described in further detail with specific embodiment by reference to the accompanying drawings.
Embodiment
As shown in Figure 1, static balance antifriction slippage support cylinder described in the utility model comprises cylinder body 1, in the described cylinder body 1 piston 2 is installed, piston 2 sidewalls be equipped with and cylinder body 1 internal chamber wall between seal ring 22; Piston rod 24 outer ends of piston 2 pass cylinder body 1, be equipped with on the cylinder body 1 and piston rod 24 between seal ring 23.Described piston rod 24 outer ends are equipped with a crawler shoe 3, adopt the cambered surface contact to be connected between piston rod 24 outer ends and the crawler shoe 3.Caving in cylindric recess arranged in described crawler shoe 3 bottoms, by vertically disposed spring 44 static pressure piston 4 is installed in described recess, and the bottom surface of crawler shoe 3 has antifriction material 33 again.The cross sectional area of recess is slightly less than the upper surface area of piston 2, and the lower surface area of static pressure piston 4 also is slightly less than the upper surface area of piston 2; Be equipped with on the sidewall of static pressure piston 4 and the recess madial wall between radial direction seal ring 42; Recess lower end sidewall be equipped with and static pressure piston 4 lower end sidewalls between bottom seal ring 43.Described static pressure piston 4 lower surfaces are coated with a bronze medal layer 45.
The radially middle part of described piston 2 and piston rod 24 is corresponding to be provided with first perforation 21, is provided with first perforation 21 at crawler shoe 3 and is connected second perforation 31; The joint of first perforation, 21 and second perforation 31 is provided with seal ring 32.Described first perforation 21 communicates with cylinder body 1 inner chamber, and second bores a hole 21 runs through the recess inner top surface; Static pressure piston 4 radially middle part is provided with the 3rd perforation 41.
Structural principle of the present utility model is as described below:
Because the static pressure piston communicates with cylinder cavity by perforation, in-oil cylinder pressure oil causes the static pressure piston through perforation, after heavy duty is static by jack-up, just can form static balance, again because the effective active area of static pressure piston is slightly smaller than the effective active area of oil cylinder piston, thereby the static pressure piston can be with the whole jack-up of crawler shoe, and only can offset most of load that oil cylinder bears, so the positive pressure on the crawler shoe friction pair is just remaining very little; In addition, because the Oil Guide effect of perforation can make between static pressure piston lower surface and the slip plane and form oil film, so just can reduce the friction factor of the friction pair between crawler shoe and the slip plane greatly; Because diminishing of positive pressure and friction factor, so that the sliding friction resistance just reduces is many, improved the efficient when the slide device transportation is heavily loaded.The bottom seal ring is to seal up the fluid of guiding to static pressure piston lower surface by the 3rd perforation of static pressure piston to make its nonvoluntary flowing.Bottom seal ring and the radial direction seal ring of static pressure piston have prevented that pressure oil from leaking and the outflow of Residual oil.The static pressure piston can be pressed on the slip plane by spring.Support cylinder described in the utility model, after jacking plays heavy duty, can slippage stepping forward under the environment of lower resistance.
The utility model is not limited to above-mentioned mode of execution, if various changes of the present utility model or modification are not broken away from spirit and scope of the present utility model, if these are changed and modification belongs within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and change.
Claims (4)
1. static balance antifriction slippage support cylinder, comprise cylinder body, in the described cylinder body piston is installed, described piston side wall be equipped with and the inner chamber of cylinder block wall between seal ring, it is characterized in that described piston rod outer end is equipped with a crawler shoe, caves in a recess is arranged in described crawler shoe bottom, by vertically disposed spring one static pressure piston is installed in described recess, the cross sectional area of described recess is slightly less than the upper surface area of described piston; Be equipped with on the sidewall of described static pressure piston and the recess madial wall between radial direction seal ring; The radially middle part of described piston and piston rod is corresponding to be provided with first perforation, is provided with first perforation at crawler shoe and is connected second perforation; Described first perforation communicates with inner chamber of cylinder block, and described second perforation runs through the recess inner top surface; Described static pressure piston is provided with the 3rd perforation, described recess lower end madial wall be equipped with and static pressure piston lower end sidewall between the bottom seal ring.
2. static balance antifriction slippage support cylinder according to claim 1 is characterized in that the bottom surface of described crawler shoe has antifriction material again.
3. static balance antifriction slippage support cylinder according to claim 1 and 2 is characterized in that, described first perforation is provided with seal ring with the joint of second perforation.
4. static balance antifriction slippage support cylinder according to claim 1 is characterized in that, described static pressure piston lower surface is coated with a bronze medal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220668450 CN203067401U (en) | 2012-12-06 | 2012-12-06 | Static pressure balance antifriction sliding supporting oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220668450 CN203067401U (en) | 2012-12-06 | 2012-12-06 | Static pressure balance antifriction sliding supporting oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067401U true CN203067401U (en) | 2013-07-17 |
Family
ID=48766191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220668450 Expired - Lifetime CN203067401U (en) | 2012-12-06 | 2012-12-06 | Static pressure balance antifriction sliding supporting oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067401U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062151A (en) * | 2012-12-06 | 2013-04-24 | 中国海洋石油总公司 | Static pressure balancing anti-friction sliding support cylinder |
| CN104047913A (en) * | 2014-06-04 | 2014-09-17 | 洛阳利维科技有限公司 | Device used for moving large-load workbench by relative type concentric double-piston rod oil cylinders |
| CN105736569A (en) * | 2014-12-24 | 2016-07-06 | 株式会社捷太格特 | Variable-throttle hydrostatic bearing |
-
2012
- 2012-12-06 CN CN 201220668450 patent/CN203067401U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062151A (en) * | 2012-12-06 | 2013-04-24 | 中国海洋石油总公司 | Static pressure balancing anti-friction sliding support cylinder |
| CN103062151B (en) * | 2012-12-06 | 2016-02-03 | 中国海洋石油总公司 | Static balance antifriction slippage support cylinder |
| CN104047913A (en) * | 2014-06-04 | 2014-09-17 | 洛阳利维科技有限公司 | Device used for moving large-load workbench by relative type concentric double-piston rod oil cylinders |
| CN105736569A (en) * | 2014-12-24 | 2016-07-06 | 株式会社捷太格特 | Variable-throttle hydrostatic bearing |
| CN105736569B (en) * | 2014-12-24 | 2019-08-27 | 株式会社捷太格特 | Variable restrictor shape hydrostatic bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130717 Effective date of abandoning: 20160203 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |