CN201916276U - Static-pressure plunger type hydraulic cylinder - Google Patents
Static-pressure plunger type hydraulic cylinder Download PDFInfo
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- CN201916276U CN201916276U CN2010206625954U CN201020662595U CN201916276U CN 201916276 U CN201916276 U CN 201916276U CN 2010206625954 U CN2010206625954 U CN 2010206625954U CN 201020662595 U CN201020662595 U CN 201020662595U CN 201916276 U CN201916276 U CN 201916276U
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- static pressure
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- pressure
- hydraulic cylinder
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Abstract
The utility model discloses a static-pressure plunger type hydraulic cylinder, which comprises a static-pressure piston and a static-pressure oil cylinder, wherein the static-pressure oil cylinder is divided into two parts: a high-pressure area and a static-pressure area; the high-pressure area is provided with a main oil inlet and a main return opening; a static-pressure return opening and a static-pressure oil inlet are arranged in the static-pressure area; a return chute is arranged between the high-pressure area and the static-pressure area; at least three oil chambers are evenly distributed on the inner circumferential surface of the static-pressure area; the oil chambers are communicated with the static-pressure oil inlet; and the return chute is communicated with the static-pressure return opening and the main return opening. The static-pressure plunger type hydraulic cylinder has the advantages of high reliability, low cost and long service life.
Description
Technical field
The utility model belongs to the mechanical and power equipment category, is specifically related to a kind of static pressure stick harness formula oil hydraulic cylinder.
Background technique
The working method of stick harness formula oil hydraulic cylinder is stick harness unidirectional motion under the pressure oil effect, returns under external force or self gravitation effect, goes round and begins again.Owing to have certain interval between stick harness and the cylinder body, stick harness may be in cylinder body play, poor stability also causes very big noise, has aggravated the friction between stick harness and the cylinder body part simultaneously, causes temperature distributing disproportionation, has significantly reduced operating life.
The model utility content
At the deficiency of above-mentioned stick harness formula oil hydraulic cylinder, the technical problems to be solved in the utility model provides a kind of good stability, and noise is low, the static pressure stick harness formula oil hydraulic cylinder of long working life.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of static pressure stick harness formula oil hydraulic cylinder, it comprises the static pressure piston, the static pressure oil cylinder, described static pressure piston is positioned at described static pressure oil cylinder, described static pressure piston can move up and down in described static pressure oil cylinder, described static pressure oil cylinder is divided into the zone of high pressure, static pressure district two-part, the zone of high pressure is provided with main filler opening and main return opening, be provided with static pressure return opening and static pressure filler opening in the described static pressure district, be provided with oil-return groove between described zone of high pressure and the static pressure district, be evenly distributed with at least 3 oil pockets on the described static pressure district inner peripheral surface, described oil pocket is communicated with described static pressure filler opening, described oil-return groove and described static pressure return opening, main return opening is communicated with.
Preferably, have flow controller on described main filler opening, the static pressure filler opening.
Preferably, the both sides of described oil pocket form oil back chamber, and described oil back chamber is communicated with described oil-return groove.
The utility model has following advantage: 1, friction pair is all separated by the pressure oil film, and slip resistance is only from fluid viscosity, little, the long working life of friction factor; 2, the pressure ratio on the surface of friction pair is more even, and the reliability and the life-span of piston are higher; 3, temperature distribution uniform, thermal expansion problem is less; 4, can reduce to make in the influence that produces of inexactness, so lower to the requirement of accuracy of manufacturing, cost is also lower.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Fig. 2 is the structural drawing of the utility model embodiment static pressure oil cylinder.
Fig. 3 is the schematic cross-section of the utility model embodiment static pressure oil cylinder.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, 2, 3, this static pressure stick harness formula oil hydraulic cylinder comprises a static pressure piston 3, described static pressure piston 3 is placed in the static pressure oil cylinder 4 and can moves up and down, static pressure oil cylinder 4 is divided into 41 two parts in zone of high pressure 42 and static pressure district, 42 lower ends, zone of high pressure are provided with main filler opening 47, its upper end is provided with main return opening 46, and main filler opening 47 is provided with flow controller.The static pressure district is provided with static pressure return opening 44 in two ends about in the of 41, and the middle part is provided with static pressure filler opening 45, and static pressure filler opening 45 is provided with flow controller.42 upper ends, zone of high pressure and 41 lower ends, static pressure district are provided with 2 oil-return grooves, and main return opening 46 is communicated with the oil-return groove of below, and the static pressure return opening 44 of 41 lower ends, static pressure district is communicated with the oil-return groove of top.The inner peripheral surface in static pressure district 41 is provided with at least 3 oil pockets 48, the groove of oil pocket 48 for caving in, and the both sides of oil pocket 48 form oil back chamber 43, and oil back chamber 43 is communicated with the oil-return groove of top.
The working principle of this static pressure stick harness formula oil hydraulic cylinder is that the hydraulic oil in the hydraulic power 1 through flow controller 2 throttlings, enters oil pocket 48 from quiet filler opening 45, forms static pressure.Because oil pocket 48 homalographics are uniform, the static pressure equal and opposite in direction of formation, static pressure piston 3 are controlled on the central position by static pressure.The gap of hydraulic oil flow between static pressure oil cylinder 4 and static pressure piston 3 that enters oil pocket 48 flows into oil back chamber 43, has oil back chamber 43 to flow in the oil-return groove again, flows back to hydraulic power 1 by oil-return groove by static pressure return opening 44 at last.Since isolated by hydraulic oil between static pressure piston 3 and the static pressure oil cylinder 4, when static pressure piston 3 is done axially reciprocating, no metal friction and wearing and tearing.
The working method of this static pressure stick harness formula oil hydraulic cylinder is, hydraulic oil in the hydraulic power 1, enters zone of high pressure 42 promotion static pressure pistons 3 and moves upward through flow controller 2 throttlings from main filler opening 47, and static pressure piston 3 moves downward by the self gravitation effect, go round and begin again, realize the to-and-fro motion of piston 3.The gap of hydraulic oil flow between static pressure oil cylinder 4 and static pressure piston 3 that enters zone of high pressure 42 flows in the oil-return groove, gets back to hydraulic power 1 by oil-return groove from main return opening 46 at last.
This static pressure stick harness formula oil hydraulic cylinder has the following advantages: 1, friction pair is all separated by the pressure oil film, and slip resistance is only from fluid viscosity, little, the long working life of friction factor; 2, the pressure ratio on the surface of friction pair is more even, and the reliability and the life-span of piston are higher; 3, temperature distribution uniform, thermal expansion problem is less; 4, can reduce to make in the influence that produces of inexactness, so lower to the requirement of accuracy of manufacturing, cost is also lower.
More than a kind of this static pressure stick harness formula oil hydraulic cylinder that the utility model embodiment is provided be described in detail; for one of ordinary skill in the art; thought according to the utility model embodiment; part in specific embodiments and applications all can change; in sum; this description should not be construed as restriction of the present utility model, and all any changes of being made according to the utility model design philosophy are all within protection domain of the present utility model.
Claims (3)
1. static pressure stick harness formula oil hydraulic cylinder, it comprises static pressure piston (3), static pressure oil cylinder (4), described static pressure piston (3) is positioned at described static pressure oil cylinder (4), described static pressure piston (3) can move up and down in described static pressure oil cylinder (4), it is characterized in that: described static pressure oil cylinder (4) is divided into zone of high pressure (42), static pressure district (41) two-part, zone of high pressure (42) is provided with main filler opening (47) and main return opening (46), be provided with static pressure return opening (44) and static pressure filler opening (45) in the described static pressure district (41), be provided with oil-return groove between described zone of high pressure (42) and static pressure district (41), be evenly distributed with at least 3 oil pockets (48) on the described static pressure district inner peripheral surface, described oil pocket (48) is communicated with described static pressure filler opening (45), described oil-return groove and described static pressure return opening (44), main return opening (46) is communicated with.
2. static pressure stick harness formula oil hydraulic cylinder according to claim 1 is characterized in that: have flow controller (2) on described main filler opening (47), the static pressure filler opening (45).
3. static pressure stick harness formula oil hydraulic cylinder according to claim 1 is characterized in that: the both sides of described oil pocket (48) form oil back chamber (43), and described oil back chamber (43) is communicated with described oil-return groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206625954U CN201916276U (en) | 2010-12-16 | 2010-12-16 | Static-pressure plunger type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206625954U CN201916276U (en) | 2010-12-16 | 2010-12-16 | Static-pressure plunger type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201916276U true CN201916276U (en) | 2011-08-03 |
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ID=44416073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206625954U Expired - Fee Related CN201916276U (en) | 2010-12-16 | 2010-12-16 | Static-pressure plunger type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201916276U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062153A (en) * | 2013-01-24 | 2013-04-24 | 徐州科源液压股份有限公司 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
| CN108547824A (en) * | 2018-06-22 | 2018-09-18 | 中国船舶重工集团公司第七0四研究所 | The suspension oil cylinder of more static pressure cavity configurations |
-
2010
- 2010-12-16 CN CN2010206625954U patent/CN201916276U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062153A (en) * | 2013-01-24 | 2013-04-24 | 徐州科源液压股份有限公司 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
| CN103062153B (en) * | 2013-01-24 | 2015-03-25 | 徐州科源液压股份有限公司 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
| CN108547824A (en) * | 2018-06-22 | 2018-09-18 | 中国船舶重工集团公司第七0四研究所 | The suspension oil cylinder of more static pressure cavity configurations |
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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 |
Granted publication date: 20110803 Termination date: 20161216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |