CN2634167Y - Radial swing cylinder piston type hydraulic motor - Google Patents
Radial swing cylinder piston type hydraulic motor Download PDFInfo
- Publication number
- CN2634167Y CN2634167Y CN 03232253 CN03232253U CN2634167Y CN 2634167 Y CN2634167 Y CN 2634167Y CN 03232253 CN03232253 CN 03232253 CN 03232253 U CN03232253 U CN 03232253U CN 2634167 Y CN2634167 Y CN 2634167Y
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- cylinder
- plunger
- hydraulic motor
- spheric seating
- radial swing
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- Expired - Fee Related
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Abstract
A radial swing cylinder piston type hydraulic motor comprises an oil tray, a distributor, a cylinder cap and a sealed cover in seal connection with the casing, wherein a crankshaft arranged in the casing has both ends support in a bearing, a plurality of radiated swing cylinders are arranged evenly on the circumference of the crankshaft, a plunger sliding relative to the swing cylinders is in contract with an eccentric cam arranged on the crankshaft, and the distributor which rotates synchronously with the crankshaft is arranged in a cavity between the oil tray and the casing. The utility model is characterized in that: a convex ball seat with an oil duct is arranged on the inner wall of the cylinder cap, and the swing cylinders are cylindrical and are provided with a concave spherical face engaging with the outer wall of the convex ball seat on the tops. As the utility model adopts the ball seat for supporting, on the one hand, the diameter of the ball seat is accordingly reduced to reduce the contact area between the cylindrical swing cylinders and the ball seat and the swing linear velocity of the cylindrical swing cylinders, thereby reducing the side heating of the spherical face, improving mechanical efficiency and the reliability of the motor, and simultaneously increasing the running speed and the transmission power of the motor; on the other hand, manufacture is enabled to be convenient with reduced production cost.
Description
Technical field
The utility model relates to a kind of oil hydraulic motor, especially refers to a kind of radial swing cylinder plunger hydraulic motor.
Background technique
Traditional oil hydraulic motor adopts link rod structure, radially on the circumference of its bent axle evenly be provided with five or seven cylinders, plunger in the cylinder is connected with connection rod sphere by ball pivot, cylndrical surface, connecting rod bottom contacts with the eccentric wheel of bent axle, bent axle is supported by tapered roller bearing, be fixed in housing and the capping, one end of bent axle links to each other with oil distribution casing by cross axle, the other end be driven load elements and link to each other, when pressure oil by logical food tray aperture oil distribution casing, when housing enters into plunger case, the action of hydraulic force that pressure oil produces is in plunger head, this hydraulic coupling resolves into along the connecting rod center line and points to the power at eccentric wheel center and the lateral force that the plunger case inwall is produced, the former tangential force produces moment of torsion to the rotating center of bent axle, bent axle is rotated around the crankshaft rotating center, thereby realize hydraulic pressure can be converted into mechanical energy, be the purpose of working machine output speed and moment of torsion.But owing to exist the lateral force of the latter to the plunger case inwall, make that the bearing capacity of correlated parts is big, casting strength requires high, therefore, makes its cost of production height, and efficient is low, and functional reliability is poor.For this reason, people design a kind of new type hydraulic motor, as Chinese utility model patent number be 97212341.5 " novel tilt cylinder type hydraulic motor ", it has replaced plunger-link assembly by tilt cylinder-plunger assembly, and tilt cylinder adopts trabeation, but it still exists such defective: 1. because hydraulic oil turnover runner radially enters from tilt cylinder crossbeam axle journal, this makes the sealed precision at axle journal place improve, and has increased the machining difficulty; 2. because tilt cylinder crossbeam bearing radial force easily makes the intensity of housing, bonnet journal hole lose efficacy, make endoporus become ellipse, thereby influenced sealing effect, reduced the working life of motor; 3. a plurality of tilt cylinders that distribute on the bent axle circumference must have enough positional accuracys, and this has just caused the raising of manufacture cost, otherwise easily cause the race ring play, make tilt cylinder both sides and housing, bonnet cause and draw damage, make motor produce mechanicalness noise thus, and serious heating phenomenon occurs.And another kind is 01245640.3 " novel spheroid tilt cylinder type hydraulic motor " as China Patent No., its utilization can universal rotation the spheroid tilt cylinder replaced the tilt cylinder of above-mentioned trabeation, the action of hydraulic force that produces in pressure oil enters the spheroid cylinder is to plunger the time, because plunger is swung with the spheroid cylinder, so the direction of this hydraulic coupling is to point to the eccentric wheel center along the plunger center line, therefore avoided the lateral force that the spheroid inside wall of cylinder is produced.But find that in actual use under the effect of bump formula commutation oil pressure, the endosphere wall, particularly plunger that the spheroid cylinder easily breaks away from (drift) cylinder cap easily causes leakage during near lower dead point position, makes the volumetric efficiency decline of motor; In addition, design major diameter, large-area cylinder cap endosphere wall make the swing linear velocity of spheroid cylinder increase as supporting, friction area is big, and heating is serious, thereby has reduced its mechanical efficiency, limited motor running speed, transmitted power reduces, and causes transmission efficiency to descend.
Summary of the invention
Technical problem to be solved in the utility model is the defective that overcomes prior art, and a kind of mechanical efficiency height, cost of production is low, functional reliability good and transmitted power is big radial swing cylinder plunger hydraulic motor are provided.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: this radial swing cylinder plunger hydraulic motor comprises logical food tray, oil distribution casing, housing, the cylinder cap that is connected with housing seal, sealing cover, the crankshaft two end that is arranged in housing is bearing in bearing, radially on the circumference of bent axle evenly be provided with a plurality of tilt cylinders, the plunger that slides with respect to tilt cylinder contacts with the eccentric wheel on being enclosed within bent axle, and the oil distribution casing that bent axle is done rotation synchronously is located in the cavity that leads between food tray and the housing, it is characterized in that described inboard wall of cylinder cover is provided with the outer gibbosity spheric seating of bringing oil road into, described tilt cylinder is a cylinder type, and its top is provided with the inner concavity sphere that coincide with this outer gibbosity spheric seating outer wall outward.
Described outer gibbosity spheric seating can link to each other with cylinder cap by a cylinder, is provided with the oil duct that communicates with turnover oil duct on the outer gibbosity spheric seating in the described cylinder, and described plunger is placed in outside the cylinder type tilt cylinder; Described outer gibbosity spheric seating, cylinder and cylinder cap are to be integral to good; Be difficult between cylinder type tilt cylinder and the outer gibbosity spheric seating breaking away from order to make, described cylinder type tilt cylinder also can be provided with limited ring at the inwall place on the described outer gibbosity spheric seating of correspondence top.
Described plunger also can be positioned within the cylinder type tilt cylinder.
Described plunger base can be provided with damping hole.
Can be provided with the spring that plunger and eccentric wheel, cylinder type tilt cylinder and outer gibbosity spheric seating are close between described cylinder type tilt cylinder and the plunger.
Can be provided with one group of rolling bearing forming by roller and bearing housing between described plunger and the eccentric wheel.
Compared with prior art, advantage of the present utility model is: adopt the outer gibbosity spheric seating as supporting, make its diameter correspondingly to dwindle on the one hand, to reduce the area of contact between itself and the cylinder type tilt cylinder and to reduce the swing linear velocity of cylinder type tilt cylinder, thereby reduced heating, improved the reliability of running speed, mechanical efficiency and motor, can make manufacturing easy to process on the other hand, can reduce production costs; After adopting limited ring, make to be difficult between cylinder type tilt cylinder and the outer gibbosity spheric seating breaking away from, also can not cause leakage, can improve the volumetric efficiency of motor; Damper in that plunger base is provided with can improve the lubrication and seal condition, prevents that effectively plunger contacted with the solid on eccentric wheel surface when load from changing suddenly, in order to avoid cause the destruction of static balance; Take turns this rolling bearing of setting up at plunger and crankshaft eccentric and then make mechanical efficiency, cranking performance rating and the low-speed stability of motor all obtain significant raising, running speed is improved, and transmitted power increases.
Description of drawings
Fig. 1 is the utility model first embodiment's a structural representation;
Fig. 2 is the sectional structure schematic representation of plunger in the utility model;
Fig. 3 is the utility model second embodiment's a structural representation.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment one, as depicted in figs. 1 and 2, cylinder cap 7, sealing cover 1 that this radial swing cylinder plunger hydraulic motor comprises logical food tray 19, oil distribution casing 15, housing 13, is tightly connected with housing 13, bent axle 3 two supports that are arranged in housing 13 are at bearing 2, bearing 2 is installed on respectively again in the bearing hole of housing 13 and capping 1, one end of bent axle 2 links to each other with oil distribution casing 15 by joining oily transmission shaft 16, makes oil distribution casing 15 and bent axle 3 do rotation synchronously, the other end be driven load and link to each other.Radially on the circumference of bent axle 3 evenly be provided with five (or seven) cylinder type tilt cylinders 9, the top of cylinder type tilt cylinder 9 is provided with the inner concavity sphere, with this inner concavity sphere accordingly, cylinder cap 7 inwalls are provided with the outer gibbosity spheric seating 4 of bringing oil road into, in the present embodiment, outer gibbosity spheric seating 4 links to each other with cylinder cap 7 by a cylinder 5, and the three is integral piece each other, be provided with in the cylinder 5 respectively with outer gibbosity spheric seating 4 on the oil duct that links to each other with passage on the cylinder cap 7 of turnover oil duct, like this, outer gibbosity spheric seating 4 is identical each other with the inner groovy shape sphere on the cylinder type tilt cylinder 9, make cylinder type tilt cylinder 9 realize swing, do not produce drift for the two is better contacted, cylinder type tilt cylinder 9 is provided with limited ring 6 at the inwall place on corresponding outer gibbosity spheric seating 4 tops.
Outside each cylinder type tilt cylinder 9, be with the plunger 8 that slides with respect to cylinder type tilt cylinder 9, the junction plane of the two is provided with seal ring, and is provided with the spring 10 that plunger 8 and eccentric wheel, cylinder type tilt cylinder 9 and outer gibbosity spheric seating 4 are close between cylinder type tilt cylinder 9 and plunger 8; In order to have improved the lubrication and seal condition, be provided with damping hole 20 in the bottom of plunger 8, in order to reduce internal friction, improve mechanical efficiency simultaneously, between plunger and eccentric wheel, be provided with one group of rolling bearing forming by roller 12 and bearing housing 11.
Above-mentioned oil distribution casing 15 is designed to end face and joins oily rotary valve of joining of oily mode, be set in the cavity between logical food tray 19 and the housing 13, and between oil distribution casing 15 and the housing 13, also be separately installed with between oil distribution casing 15 and the logical food tray 19 and join oily side plate 14 and auxiliary ligand fuel tap 18 and wavy spring 17, make auxiliary ligand fuel tap 18 under the effect of spring force, compress oil distribution casing 15, the wearing and tearing of oil distribution casing 15 have been compensated effectively, make operating life extend, internal leakage reduces, and high volumetric efficiency is ensured for a long time.
Its hydraulic transmission process is as follows: high pressure oil through logical food tray 19 enter auxiliary ligand fuel tap 18, oil distribution casing 15 successively, join the access ramp of oily side plate 14, housing 13, behind the passage and outer gibbosity spheric seating 4 on the cylinder cap 7, flow in the cylinder type tilt cylinder 4 and affact on the plunger 8, promote plunger 8, active force is delivered on the crankshaft eccentric wheel by plunger 8, and bent axle 3 is rotated around the crankshaft rotating center.
Embodiment two, as shown in Figure 3, itself and first embodiment's difference are that described outer gibbosity spheric seating 4 designs for split with cylinder cap 7, and plunger 8 is positioned within the cylinder type tilt cylinder 9, can make like this that machining accuracy is easier to be guaranteed, make outer gibbosity spheric seating 4 reasonable with cooperating of cylinder type tilt cylinder 9, stability of motions is significantly improved.
Claims (8)
1, a kind of radial swing cylinder plunger hydraulic motor, it comprises logical food tray (19), oil distribution casing (15), housing (13), the cylinder cap (7) that is tightly connected with housing (13), sealing cover (1), bent axle (3) two supports that is arranged in housing (13) is in bearing (2), the radial a plurality of tilt cylinders (9) that evenly are provided with on the circumference of bent axle (3), the plunger (8) that slides with respect to tilt cylinder (9) contacts with the eccentric wheel on being enclosed within bent axle (3), and the oil distribution casing (15) that bent axle (3) is done rotation synchronously is located in the cavity between logical food tray (19) and the housing (13), it is characterized in that described cylinder cap (7) inwall is provided with the outer gibbosity spheric seating (4) of bringing oil road into, described tilt cylinder (9) is a cylinder type, and its top is provided with the inner concavity sphere that coincide with this outer gibbosity spheric seating (4) outer wall outward.
2, radial swing cylinder plunger hydraulic motor according to claim 1, it is characterized in that described outer gibbosity spheric seating (4) links to each other with cylinder cap (7) by a cylinder (5), be provided with the oil duct that communicates with turnover oil duct on the outer gibbosity spheric seating (4) in the described cylinder (5), described plunger (8) is placed in outside the cylinder type tilt cylinder (9).
3, radial swing cylinder plunger hydraulic motor according to claim 2 is characterized in that described outer gibbosity spheric seating (4), cylinder (5) and cylinder cap (6) are integral.
4,, it is characterized in that described cylinder type tilt cylinder (9) is provided with limited ring (6) at the inwall place on the described outer gibbosity spheric seating of correspondence (4) top according to the radial swing cylinder plunger hydraulic motor described in the claim 3.
5, radial swing cylinder plunger hydraulic motor according to claim 1 is characterized in that described plunger (8) is positioned within the cylinder type tilt cylinder (9).
6,, it is characterized in that described plunger (8) bottom is provided with damping hole (20) according to arbitrary described radial swing cylinder plunger hydraulic motor in the claim 1 to 5.
7,, it is characterized in that being provided with between described cylinder type tilt cylinder (9) and the plunger (8) spring (10) that plunger (8) and eccentric wheel, cylinder type tilt cylinder (9) and outer gibbosity spheric seating (4) are close to according to arbitrary described radial swing cylinder plunger hydraulic motor in the claim 1 to 5.
8,, it is characterized in that being provided with between described plunger (8) and the eccentric wheel one group of rolling bearing forming by roller (12) and bearing housing (11) according to arbitrary described radial swing cylinder plunger hydraulic motor in the claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232253 CN2634167Y (en) | 2003-06-17 | 2003-06-17 | Radial swing cylinder piston type hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232253 CN2634167Y (en) | 2003-06-17 | 2003-06-17 | Radial swing cylinder piston type hydraulic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2634167Y true CN2634167Y (en) | 2004-08-18 |
Family
ID=34291391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03232253 Expired - Fee Related CN2634167Y (en) | 2003-06-17 | 2003-06-17 | Radial swing cylinder piston type hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2634167Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321269C (en) * | 2005-05-26 | 2007-06-13 | 尤新荣 | Static balance tilt cylinder type hydraulic motor |
| CN100348874C (en) * | 2005-10-28 | 2007-11-14 | 周伟 | Radial swing cylinder plunger hydraulic motor |
| CN102174924A (en) * | 2011-03-10 | 2011-09-07 | 宁波新宏液压有限公司 | Swing-cylinder hydraulic motor |
| CN102808751A (en) * | 2012-06-13 | 2012-12-05 | 宝鸡航天动力泵业有限公司 | Oilfield high-flow reciprocating water injection pump |
| WO2014194463A1 (en) * | 2013-06-04 | 2014-12-11 | Du Dingwen | Drive device for hydraulic motor |
| CN107939594A (en) * | 2017-11-08 | 2018-04-20 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of radial plunger piston motor |
-
2003
- 2003-06-17 CN CN 03232253 patent/CN2634167Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321269C (en) * | 2005-05-26 | 2007-06-13 | 尤新荣 | Static balance tilt cylinder type hydraulic motor |
| CN100348874C (en) * | 2005-10-28 | 2007-11-14 | 周伟 | Radial swing cylinder plunger hydraulic motor |
| CN102174924A (en) * | 2011-03-10 | 2011-09-07 | 宁波新宏液压有限公司 | Swing-cylinder hydraulic motor |
| CN102808751A (en) * | 2012-06-13 | 2012-12-05 | 宝鸡航天动力泵业有限公司 | Oilfield high-flow reciprocating water injection pump |
| WO2014194463A1 (en) * | 2013-06-04 | 2014-12-11 | Du Dingwen | Drive device for hydraulic motor |
| CN104583607A (en) * | 2013-06-04 | 2015-04-29 | 杜鼎文 | Drive device for hydraulic motor |
| CN107939594A (en) * | 2017-11-08 | 2018-04-20 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of radial plunger piston motor |
| CN107939594B (en) * | 2017-11-08 | 2019-11-19 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of radial plunger piston motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040818 Termination date: 20120617 |