CN102338024B - Inner curve radial plunger-type hydraulic motor - Google Patents
Inner curve radial plunger-type hydraulic motor Download PDFInfo
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- CN102338024B CN102338024B CN201110255067.6A CN201110255067A CN102338024B CN 102338024 B CN102338024 B CN 102338024B CN 201110255067 A CN201110255067 A CN 201110255067A CN 102338024 B CN102338024 B CN 102338024B
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- plunger
- roller
- stator
- inner curve
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Abstract
The invention discloses an inner curve radial plunger-type hydraulic motor, which comprises a rotor, a plunger hole, a plunger, a roller and a stator, wherein the plunger hole is arranged on the rotor, the plunger is connected with the plunger hole in a sliding way, the roller is matched with the upper end surface of the plunger in a sliding way and is contacted with an inner curve curved surface of the stator, the roller can rotate along an axis of the roller, the roller is a drum roller, the inner curve curved surface of the stator is an inner cure curved surface which is matched with the shape of an outer circumferential surface of the drum roller, and the upper end surface of the plunger is a curved surface which is matched with the drum roller; and the cross section of the plunger is a rectangular shape, corners of the rectangular cross section are arc transition, and the cross section of the plunger hole is a rectangular shape which is matched with the rectangular cross section of the plunger. Under the situation that other auxiliary components are not increased, the roller can be effectively prevented from moving along the axis of the roller, the hydraulic motor is simple to assemble, the strength of the plunger is improved, and the service life of the motor can be prolonged.
Description
Technical field
The invention belongs to hydraulic machinery field, specifically relate to a kind of inner curve radial plunger type hydraulic pump/motor.
Background technique
Inner curve radial plunger type hydraulic pump/motor generally all adopts cylindrical roller, because can making oil hydraulic motor roller in running, the factors such as speed fluctuation of machining error and motor running move along self axis, roller moves along self axis the wearing and tearing that not only increase roller self, the plunger coordinating with roller and stator contact segment, and makes motor operations bad stability.In order to limit roller along the movement of self axis, traditional method is to install guide plate or circlip additional at the two ends of roller.As a kind of inner curve radial plunger type hydraulic pump/motor of prior art moves along self axis for preventing roller, guide plate is installed at two ends at roller, and this guide plate and rotor are made of one, guide plate is stiff, this structure need to will be installed guide plate in epitrochanterian each plunger hole, therefore assembling difficulty; And for example the inner curve radial plunger type hydraulic pump/motor of another kind of prior art moves along self axis for preventing roller, two all-in-one-piece circlips on card in the groove of the both ends of the surface of rotor, although this method also can effectively limit roller and move along self axis, but on rotor, slot, increase the processing of secondary baffle, its assembling is also cumbersome.
Also have when inner curve radial plunger type hydraulic pump/motor is walked engineering machinery for some, when particularly using as wheel motor, restriction due to wheel diameter, stator size radially is strictly limited, therefore therefore the diameter of the cylindrical plunger of prior art is also subject to strict restriction, plunger is passed to cylindrical roller by thrust, because the outer peripheral surface of cylindrical roller and the upper-end surface of plunger coordinate, the axial dimension of described roller is also restricted, and the contact width that the inner curve guide rail of roller and stator makes progress in Roller Shaft is also restricted.In theory roller and stator are all considered as to rigid body, described roller contacts with the inner curve guide rail of stator as line contact, in fact under the thrust producing in high pressure liquid force feed, there is resiliently deformable in contacting part branch, the contact of formation face, cause the inner curve curved surface of plunger and stator and the insufficient strength of roller contact segment and heavy wear and fracture occur, this is the one of the main reasons that causes engineering accident to occur.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of and in the situation that not increasing other auxiliary components, also can effectively prevent that roller from moving and assembling simple and increasing the intensity of plunger, extend the inner curve radial plunger type hydraulic pump/motor in the working life of motor along self axis.
Technical solution of the present invention is, a kind of inner curve radial plunger type hydraulic pump/motor with following structure is provided, comprise rotor, plunger hole, plunger, roller, stator, described plunger hole is arranged on rotor, described plunger is slidably connected with plunger hole, described roller is slidably matched with plunger upper-end surface and contacts with the inner curve curved surface of stator, can rotate around roller self axis, described roller is barrel shaped roller, the inner curve curved surface of the inner curve curved surface of described stator for matching with the outer peripheral surface shape of barrel shaped roller, the curved surface of the upper-end surface of described plunger for matching with barrel shaped roller, the shape of cross section of described plunger is rectangle, and the corner of described rectangular cross-section is arc transition, the rectangle of the cross section of described plunger hole for matching with plunger rectangular cross-section.
Adopt after above structure, inner curve radial plunger type hydraulic pump/motor of the present invention compared with prior art, has the following advantages:
The roller adopting due to inner curve radial plunger type hydraulic pump/motor of the present invention is a kind of barrel shaped roller with cydariform outer peripheral surface, the inner curve curved guide of the inner curve curved guide of described stator for matching with the cydariform outer peripheral surface shape of barrel shaped roller, the curved surface of the upper-end surface of described plunger for matching with barrel shaped roller, described barrel shaped roller rolls on curved guide, in the situation that not increasing other auxiliary components, also can highly effectively prevent that roller from moving along self axis, and increased the area of contact of the cydariform inner curve curved guide of roller and stator, reduce the contact stress of roller when work, motor operations stability is improved greatly, and do not increase other auxiliary components, number of spare parts is few, assembling is simple.Described motor also adopts a kind of rectangular section plunger, described rectangular section plunger is in the situation that stator radial dimension is restricted, increase plunger in the size of stator shaft orientation, therefore the sectional area of plunger increases, increased the intensity of plunger, reduce the plastic deformation of plunger, also make under same oil liquid pressure, output torque increases; Plunger increases in the size of stator shaft orientation, correspondingly can increase the axial dimension of roller, the corresponding increase of contact width that the inner curve curved guide of roller and stator makes progress in Roller Shaft, the plunger of rectangular cross-section coordinates barrel shaped roller, the area of contact of the inner curve curved guide of plunger and roller, roller and stator is all increased, under identical oil liquid pressure effect, the contact stress of surface of contact while having reduced work, reduce the wearing and tearing of plunger, roller, stator inner curve curved guide, extended the working life of motor.
Accompanying drawing explanation
It shown in Fig. 1, is the structural representation of inner curve radial plunger type hydraulic pump/motor of the present invention.
It shown in Fig. 2, is the zoomed-in view of roller in Fig. 1.
It shown in Fig. 3, is the A-A view of Fig. 1.
It shown in Fig. 4, is the B-B view of Fig. 1.
Shown in figure: 1, front cover, 2, rolling bearing, 3, transmission shaft, 4, rotor, 5, plunger hole, 6, plunger, 7, roller, 8, stator, 9, cylinder body, 10, oil distributing shaft, 11, oil inlet passage, 12, drainback passage.
embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Refer to Fig. 1, shown in Fig. 2 and Fig. 3, inner curve radial plunger type hydraulic pump/motor of the present invention, comprise rotor 4, plunger hole 5, plunger 6, roller 7, stator 8, described plunger hole 5 is arranged on rotor 4, described plunger 6 is slidably connected with plunger hole 5, described roller 7 is slidably matched with plunger 6 upper-end surfaces and contacts with the inner curve curved surface of stator 8, and can rotate around roller 7 self axis, described roller 7 is barrel shaped roller, the inner curve curved surface of the inner curve curved surface of described stator 8 for matching with the outer peripheral surface shape of barrel shaped roller, the curved surface of the upper-end surface of described plunger 6 for matching with barrel shaped roller, the shape of cross section of described plunger 6 is rectangle, and the corner of described rectangular cross-section is arc transition, the rectangle of the cross section of described plunger hole 5 for matching with plunger 6 rectangular cross-sections.
As depicted in figs. 1 and 2, the roller 7 of inner curve radial plunger type hydraulic pump/motor of the present invention is a kind of barrel shaped roller with cydariform outer peripheral surface, the inner curve curved guide of the inner curve curved guide of described stator 8 for matching with the cydariform outer peripheral surface shape of barrel shaped roller, described barrel shaped roller rolls on inner curve curved guide, in the situation that not increasing other auxiliary components, also can highly effectively prevent that roller 7 from moving along self axis, and increased the area of contact of the cydariform inner curve curved guide of roller 7 and stator 8, reduce the contact stress of roller 7 when work, motor operations stability is improved greatly, and do not increase other auxiliary components, number of spare parts is few, assembling is simple.
As shown in Figure 1 and Figure 4, the shape of cross section of the plunger 6 of inner curve radial plunger type hydraulic pump/motor of the present invention is rectangle, described rectangular section plunger 6 is in the situation that stator 8 radial dimensions are restricted, increase plunger 6 in the axial size of stator 8, therefore the sectional area of plunger 6 increases, and has increased the intensity of plunger 6, reduces the plastic deformation of plunger 6, also make under same oil liquid pressure, output torque increases; Plunger 6 increases in the axial size of stator 8, correspondingly can increase the axial dimension of roller 7, the contact width corresponding increase of the inner curve curved guide of roller 7 and stator 8 on roller 7 is axial, the plunger 6 of rectangular cross-section coordinates barrel shaped roller 7, the area of contact of the inner curve curved guide of plunger 6 and roller 7, roller 7 and stator 8 is all increased, under identical oil liquid pressure effect, the contact stress of surface of contact while having reduced work, reduce the wearing and tearing of plunger 6, roller 7, stator 8 inner curve curved guides, extended the working life of motor.
As shown in figures 1 and 3, inner curve radial plunger type hydraulic pump/motor of the present invention also comprises front cover 1, rolling bearing 2, transmission shaft 3, cylinder body 9 and pintle 10, described front cover 1, stator 8 and cylinder body 9 form the inner chamber of whole motor, in described inner chamber, be provided with pintle 10 and the transmission shaft 3 that rolling bearing 2 is installed, on described rotor 4, be also provided with thrust plate, described rotor 4 and transmission shaft 3 pass through spline joint, described pintle 10 is connected by key with rotor 4, described cylinder body 9 is provided with oil inlet passage 12 and drainback passage 13, described pintle 10 is provided with the runner passing through for hydraulic oil, oil inlet passage 12 in described cylinder body 9 and drainback passage 13 are linked up with the runner of pintle 10 respectively, the runner of pintle 10 is communicated with the thrust plate of rotor 4 again, described thrust plate is communicated with the hydraulic fluid port of plunger hole 5, be prior art, no longer launch to set forth herein.
During motor operations, hydraulic oil enters the runner of pintle 10 from the filler opening of cylinder body 9 through oil inlet passage 12, then through the thrust plate of rotor 4 and the hydraulic fluid port of plunger hole 5, enter plunger hole 5, under the pressure-acting of high pressure liquid force feed, promoting plunger 6 slides towards stator 8 directions along plunger hole 5, plunger 6 is passed to barrel shaped roller 7 by thrust, roller 7 contacts with the curved guide of stator 8 and has produced the component rotating, thereby drive rotor 4 rotates, described rotor 4 and transmission shaft 3 pass through spline joint, transmission shaft 3 synchronously rotates, outwards output torque.In the present embodiment, in the situation that not increasing other auxiliary components, in whole working procedure, rely on the engagement limits roller of inner curve curved surface of upper-end surface, barrel shaped roller 7 and stator 8 of plunger 6 along the movement of self axis, increased the area of contact of roller 7 and stator 8, can reduce contact stress, oil hydraulic motor working stability be improved, and do not increase other auxiliary components, number of spare parts is few, and assembling is simple, also adopt a kind of rectangular section plunger 6, described plunger 6 is in the situation that stator radial dimension is restricted, increase plunger 6 in the size of stator shaft orientation, therefore the sectional area of plunger 6 increases, increased the intensity of plunger 6, correspondingly can increase the axial dimension of roller 7, the contact width corresponding increase of the inner curve curved guide of roller 7 and stator 8 on roller 7 is axial, described barrel shaped roller 7 and rectangular section plunger 6 are used in conjunction with, the contact stress of surface of contact while greatly reducing work, reduced plunger 6, roller 7, the wearing and tearing of stator 8 inner curve curved guides, extend the working life of motor.
Claims (1)
1. an inner curve radial plunger type hydraulic pump/motor, comprise rotor (4), plunger hole (5), plunger (6), roller (7), stator (8), described plunger hole (5) is arranged on rotor (4), described plunger (6) is slidably connected with plunger hole (5), described roller (7) is slidably matched with plunger (6) upper-end surface and contacts with the inner curve curved surface of stator (8), can rotate around roller (7) self axis, it is characterized in that: described inner curve radial plunger type hydraulic pump/motor also comprises front cover (1), rolling bearing (2), transmission shaft (3), cylinder body (9) and pintle (10), described front cover (1), stator (8) and cylinder body (9) form the inner chamber of whole motor, in described inner chamber, be provided with pintle (10) and the transmission shaft (3) of rolling bearing (2) is installed, described rotor is also provided with thrust plate on (4), described rotor (4) and transmission shaft (3) pass through spline joint, described pintle (10) is connected by key with rotor (4), described cylinder body (9) is provided with oil inlet passage (11) and drainback passage (12), described pintle (10) is provided with the runner passing through for hydraulic oil, described cylinder body (link up with the runner of pintle (10) respectively by the oil inlet passage in 9 (11) and drainback passage (12), the runner of pintle (10) again and the thrust plate of rotor (4) be communicated with, described thrust plate is communicated with the hydraulic fluid port of plunger hole (5), described roller (7) is barrel shaped roller, the inner curve curved surface of the inner curve curved surface of described stator (8) for matching with the outer peripheral surface shape of barrel shaped roller, the curved surface of the upper-end surface of described plunger (6) for matching with barrel shaped roller, the shape of cross section of described plunger (6) is rectangle, and the corner of described rectangular cross-section is arc transition, the rectangle of the cross section of described plunger hole (5) for matching with plunger (6) rectangular cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110255067.6A CN102338024B (en) | 2011-08-31 | 2011-08-31 | Inner curve radial plunger-type hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110255067.6A CN102338024B (en) | 2011-08-31 | 2011-08-31 | Inner curve radial plunger-type hydraulic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102338024A CN102338024A (en) | 2012-02-01 |
| CN102338024B true CN102338024B (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110255067.6A Expired - Fee Related CN102338024B (en) | 2011-08-31 | 2011-08-31 | Inner curve radial plunger-type hydraulic motor |
Country Status (1)
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| CN (1) | CN102338024B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966534A (en) * | 2012-11-08 | 2013-03-13 | 上海电气液压气动有限公司 | Hydraulic pump/motor back cover |
| CN103114963A (en) * | 2013-01-04 | 2013-05-22 | 湖州师范学院 | Low-speed and high-torque hydraulic motor |
| CN105889008A (en) * | 2014-10-24 | 2016-08-24 | 北京中和天万泵业有限责任公司 | Inner curved plane cam rolling bearing radial plunger pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2353937Y (en) * | 1998-06-12 | 1999-12-15 | 燕山大学 | Plunger-type roller pump |
| CN201902286U (en) * | 2010-12-21 | 2011-07-20 | 宁波市恒通液压科技有限公司 | Inner curve multiple-acting radial plunger type hydraulic centrifugal motor |
| CN202194771U (en) * | 2011-08-31 | 2012-04-18 | 浙江大学宁波理工学院 | Inner curve radial plunger hydraulic motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56141269A (en) * | 1980-03-31 | 1981-11-04 | Mitsuo Enomoto | Winding tool for hose |
-
2011
- 2011-08-31 CN CN201110255067.6A patent/CN102338024B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2353937Y (en) * | 1998-06-12 | 1999-12-15 | 燕山大学 | Plunger-type roller pump |
| CN201902286U (en) * | 2010-12-21 | 2011-07-20 | 宁波市恒通液压科技有限公司 | Inner curve multiple-acting radial plunger type hydraulic centrifugal motor |
| CN202194771U (en) * | 2011-08-31 | 2012-04-18 | 浙江大学宁波理工学院 | Inner curve radial plunger hydraulic motor |
Non-Patent Citations (2)
| Title |
|---|
| 径向柱塞式液压马达等接触应力内曲线的研究;程海林;《中国优秀博硕士学位论文全文数据库》;20040915(第3期);12-13页，第一章 2.1节 内曲线液压马达的工作原理及基本结构 * |
| 程海林.径向柱塞式液压马达等接触应力内曲线的研究.《中国优秀博硕士学位论文全文数据库》.2004,(第3期), |
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| CN102338024A (en) | 2012-02-01 |
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