CN2854142Y - Double-damping effect plunger assembly of hydraulic pump - Google Patents
Double-damping effect plunger assembly of hydraulic pump Download PDFInfo
- Publication number
- CN2854142Y CN2854142Y CN 200520036153 CN200520036153U CN2854142Y CN 2854142 Y CN2854142 Y CN 2854142Y CN 200520036153 CN200520036153 CN 200520036153 CN 200520036153 U CN200520036153 U CN 200520036153U CN 2854142 Y CN2854142 Y CN 2854142Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- hole
- radially
- damping hole
- supporting chamber
- 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
Links
Abstract
The utility model is hydraulic pressure double-damping effect plunger component comprising a plunger (5), a plunger hole (1) and a skid shoe (7) of a cylinder body (3). A bulb of the plunger (5) are matching with a ball socket of the skid shoe (7); A plunger chamber (4) is communicated with the ball socket of the skid shoe by an orifice (6); A space (8) is provided between outside surface (2) of the plunger and the plunger hole (1). At least two radial orifice (10) on the plunger (5) communicate the space (8) between outside surface of the plunger and the plunger hole with the plunger chamber (4).
Description
Technical field:
The utility model is relevant with the friction pair of hydraulic pamp, and is especially relevant with plunger hole and slippery boots assembly on plunger and the cylinder body.
Background technique:
Water hydraulics has advantages such as environmental protection, safety and production is compatible, is the hydraulics of greatly developing in recent years.Because tap water after directly employing is filtered or seawater are as working medium, not only cost is low, and obtains convenience, safe and reliable, is particularly suitable for industries such as ocean operation, medical treatment, food and metallurgy.Compare with hydraulic oil, the viscosity of water is much smaller, and lubricity is relatively poor, makes that the friction pair design of hydraulic pressure element is particularly important.By the pairing of material and the optimization of structure, as far as possible the balance wearing and tearing and leak between contradiction, guarantee hydraulic pressure the element particularly volumetric efficiency and the operating life of hydraulic pamp and motor.
The water pressure plunger surface of existing main structure form is smooth cylinder.Because moisture film is thinner than oil film, there is following deficiency in this structure: the one, and nonreactive chucking ability; The 2nd, plunger surface or plunger hole easily are worn; The 3rd, trunk piston set easily is stuck.
The content of model utility:
The purpose of this utility model provides a kind of pair of damping effect piston structure, is used for improving the anti-chucking ability of plunger, avoids the wearing and tearing of trunk piston set or stuck as far as possible, thereby improves the lubrication property of trunk piston set.
The utility model is achieved in that
The two damping effect plunger assemblies of the utility model hydraulic pamp, the plunger hole 1 and the piston shoes 7 that comprise plunger 5, cylinder body 3, the bulb of plunger 5 cooperates with the ball-and-socket of piston shoes 7, plunger cavity 4 communicates with the piston shoes ball-and-socket by damping hole 6, the outer surface 2 of plunger and plunger hole 1 are gapped 8, have on the plunger 5 at least two radially damping hole 10 gap between outer plunger surface and the plunger hole 8 and plunger cavity 4 are led to.
Plunger surface 2 has supporting chamber 9, and radially damping hole 10 is positioned at supporting chamber 9.The supporting chamber 9 and radially the cross section of damping hole 10 be concentric circle.
Radially damping hole 10 or/and the axis of supporting chamber 9 be positioned on the same cross section of plunger 5, and by identical central angle symmetric arrangement.
The supporting chamber 9 and radially damping hole 10 respectively be 3, arrange on plunger 5 same cross sections by 120 ° of identical central angles.
Radially damping hole 10 and supporting chamber 9 are positioned at plunger 5 left ends or right-hand member.
When the utility model needs the anti-chucking rigidity of trunk piston set bigger, the supporting chamber and radially damping hole the closer to the bulb end.
The utility model is simple in structure, and is easy to manufacture, utilizes the principle of local independent hydrostatic support, promptly sets up many places supportings chamber at plunger surface, independently of one another between each chamber, has the independent hydrostatic support passage that rigidity is regulated by forming with separately damping hole.When trunk piston set was eccentric, the supporting cavity internal pressure of little gap location increased, and the supporting cavity room pressure of big gap location reduces, so form the moment of an opposing plunger, stop its chucking, keep the parastate of plunger in plunger hole, thereby guarantee the good lubrication of water pressure plunger pair.
Description of drawings:
Fig. 1 is a plan view of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment:
The utility model is two damping effect plunger assemblies, comprises radially damping hole 10 of 9, three of three supporting chambers, plunger hole 1, plunger ball damping hole 6, plunger 5, piston shoes 7.
3 supporting chambers 9 are along the circumferential direction pressed hexagonal angle apart from layout.
3 radially damping hole 10 get through from the internal surface of plunger cavity 4 and supporting chamber 9 separately, guarantee that high pressure water supplies with each supporting chamber simultaneously.
Press water is introduced from plunger hole 1, and a part of press water directly flows out by trunk piston set gap 8, flows in the pump chamber; Another part press water passes through radially damping hole 10 flow direction supporting chambers 9, by trunk piston set gap 8 outflows of supporting chamber downstream, flows in the pump chamber then; Remaining a part of press water flows to the piston shoes pair by the damping hole in the plunger ball 6.
When plunger was eccentric, because the symmetry properties of structure, supporting cavity indoor pressure in every place equated, lubricated identical with common trunk piston set, and just the more common plunger of seal length of pair damping effect trunk piston set diminishes.When plunger is eccentric, the pairing liquid resistance of a plurality of supporting chambers on the plunger surface is no longer equal, one of them becomes big, two diminish in addition, so make that the liquid resistive is greatly that the supporting cavity room pressure of moisture film attenuation place correspondence raises, the liquid resistive is little to be that the supporting cavity room pressure of moisture film thickening place correspondence reduces, thereby forms a water pressure that allows the anti-eccentric motion of plunger, up to the flat shape attitude of maintenance, could guarantee the state of equilibrium of chamber pressure and water film thickness with plunger hole.When plunger tilted, its antidip was regulated in like manner.
Claims (6)
1, the two damping effect plunger assemblies of hydraulic pamp, the plunger hole (1) and the piston shoes (7) that comprise plunger (5), cylinder body (3), the bulb of plunger (5) cooperates with the ball-and-socket of piston shoes (7), plunger cavity (4) communicates with the piston shoes ball-and-socket by damping hole (6), the outer surface of plunger (2) and plunger hole (1) gapped (8), it is characterized in that having on the plunger (5) at least two radially damping hole (10) gap between outer plunger surface and the plunger hole (8) and plunger cavity (4) are led to.
2, plunger assembly according to claim 1 is characterized in that plunger surface (2) has supporting chamber (9), and radially damping hole (10) is positioned at supporting chamber (9).
3, plunger assembly according to claim 1 and 2, it is characterized in that supporting chamber (9) and radially the cross section of damping hole (10) be concentric circle.
4, according to claim 1 or 2 or 3 described plunger assemblies, it is characterized in that damping hole (10) radially or/and the axis of supporting chamber (9) is positioned on the same cross section of plunger (5), and by identical central angle symmetric arrangement.
5, plunger assembly according to claim 4, it is characterized in that supporting chamber (9) and radially damping hole (10) respectively be 3, arrange on the same cross section of plunger (5) by 120 ° of identical central angles.
6,, it is characterized in that radially damping hole (10) and supporting chamber (9) are positioned at plunger (5) left end or right-hand member according to claim 1 or 2 or 5 described plunger assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036153 CN2854142Y (en) | 2005-11-18 | 2005-11-18 | Double-damping effect plunger assembly of hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036153 CN2854142Y (en) | 2005-11-18 | 2005-11-18 | Double-damping effect plunger assembly of hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2854142Y true CN2854142Y (en) | 2007-01-03 |
Family
ID=37580773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520036153 Expired - Fee Related CN2854142Y (en) | 2005-11-18 | 2005-11-18 | Double-damping effect plunger assembly of hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2854142Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956684A (en) * | 2010-09-21 | 2011-01-26 | 华中科技大学 | Plunger type water pump |
| CN101956685A (en) * | 2010-09-21 | 2011-01-26 | 华中科技大学 | Fully water-lubricated super-pressure plunger water pump |
| CN101979879A (en) * | 2010-10-20 | 2011-02-23 | 江苏欧盛液压科技有限公司 | Novel plunger sliding shoe component |
| WO2012037738A1 (en) * | 2010-09-21 | 2012-03-29 | 华中科技大学 | Plunger water pump |
| CN102619675A (en) * | 2011-06-16 | 2012-08-01 | 兰州理工大学 | Seven parts individual effecting piston cylinder polarization type radial plunger motor |
| CN102758720A (en) * | 2011-04-26 | 2012-10-31 | 无锡市汉力士液压泵制品有限公司 | Radial piston used in hydraulic motor |
| CN107781157A (en) * | 2017-10-24 | 2018-03-09 | 徐州工业职业技术学院 | A kind of hydraulic pump plunger for reducing flow pulsation |
| CN113236551A (en) * | 2021-05-11 | 2021-08-10 | 北京中金泰达电液科技有限公司 | Plunger piston shoe assembly and plunger pump |
-
2005
- 2005-11-18 CN CN 200520036153 patent/CN2854142Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956684A (en) * | 2010-09-21 | 2011-01-26 | 华中科技大学 | Plunger type water pump |
| CN101956685A (en) * | 2010-09-21 | 2011-01-26 | 华中科技大学 | Fully water-lubricated super-pressure plunger water pump |
| WO2012037738A1 (en) * | 2010-09-21 | 2012-03-29 | 华中科技大学 | Plunger water pump |
| CN101979879A (en) * | 2010-10-20 | 2011-02-23 | 江苏欧盛液压科技有限公司 | Novel plunger sliding shoe component |
| CN102758720A (en) * | 2011-04-26 | 2012-10-31 | 无锡市汉力士液压泵制品有限公司 | Radial piston used in hydraulic motor |
| CN102619675A (en) * | 2011-06-16 | 2012-08-01 | 兰州理工大学 | Seven parts individual effecting piston cylinder polarization type radial plunger motor |
| CN102619675B (en) * | 2011-06-16 | 2014-07-23 | 兰州理工大学 | Seven parts individual effecting piston cylinder polarization type radial plunger motor |
| CN107781157A (en) * | 2017-10-24 | 2018-03-09 | 徐州工业职业技术学院 | A kind of hydraulic pump plunger for reducing flow pulsation |
| CN107781157B (en) * | 2017-10-24 | 2018-11-16 | 徐州工业职业技术学院 | A kind of hydraulic pump plunger reducing flow pulsation |
| CN113236551A (en) * | 2021-05-11 | 2021-08-10 | 北京中金泰达电液科技有限公司 | Plunger piston shoe assembly and plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |