CN104179679A - Low-abrasion hydraulic machine - Google Patents
Low-abrasion hydraulic machine Download PDFInfo
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- CN104179679A CN104179679A CN201410279593.XA CN201410279593A CN104179679A CN 104179679 A CN104179679 A CN 104179679A CN 201410279593 A CN201410279593 A CN 201410279593A CN 104179679 A CN104179679 A CN 104179679A
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- 238000005299 abrasion Methods 0.000 title abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 68
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 230000007423 decrease Effects 0.000 claims description 25
- 230000000630 rising effect Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 9
- 238000005461 lubrication Methods 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 abstract 2
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 208000031872 Body Remains Diseases 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention discloses a low-abrasion hydraulic machine. The low-abrasion hydraulic machine comprises a rotor having multiple radial grooves, a plurality of blades, a stator, and side plates arranged at the two ends of the stator and the rotor, wherein rolling ways are formed in the end surfaces, towards the inner surface of the stator, of the outer ends of the blades; rolling bodies are movably arranged in the rolling ways; fluid lubricating films are arranged between the rolling bodies and the rolling ways; the surfaces of the rolling bodies are projected on the front end surfaces of the blades; when the blades slide to extend out, the surfaces of the rolling bodies and the inner surface of the stator are contacted in a rolling friction manner; flow inlet windows are formed in corresponding positions of an ascending section of the inner surface of the stator or the end surfaces of the side plates; flow outlet windows are formed in corresponding positions of a descending section of the inner surface of the stator or the end surfaces of the side plates; the outer circular surface of the rotor, the inner surface of the stator, adjacent blades and rolling bodies and the side plates form fluid working cavities; the fluid working cavities in the ascending section are communicated with the flow inlet windows; and the fluid working cavities in the descending section are communicated with the flow outlet windows. The low-abrasion hydraulic machine adopts the low-abrasion rolling friction, so that the product performance is improved, the product reliability is improved, and the service life is prolonged.
Description
Technical field
The present invention relates to the vane hydraulic such as hydraulic vane pump and motor field of mechanical technique, especially relate to low wearing and tearing hydraulic machinery.
Background technique
Between the blade of existing hydraulic vane pump and motor and stator, be sliding friction, stator inner surface inefficacy easy to wear, thus affect product performance and life-span.Certainly in prior art, also there is employing rolling type blade, reduce the oil hydraulic pump of stator inner surface Problem of Failure easy to wear.
Chinese patent literature (day for announcing: on September 4th, 2002, notification number: CN 1367319A) discloses a kind of rolling type blade hydraulic pump, and it relates to the volume-type hydraulic pump category in hydraulic equipment.This oil hydraulic pump mainly comprises rotor, blade, stator, the pump housing, flow spool.Main feature of the present invention is, blade is to be made up of cylindrical rolling element, and it is placed in the U-groove bevel on rotor outer circle face, thereby has replaced the rectangular paddle of conventional vane pump.
Above-mentioned technological scheme directly adopts cylindrical rolling element as blade, has replaced slip with rolling, and has friction little, the advantages such as light abrasion.But having defect on this scenario-frame, is packing less between roller and stator inner surface and adjacent two blades, and such structure can cause sealing effect poor, service behaviour reduces.
Chinese patent literature (the day for announcing: on May 15th, 2013, notification number: CN 202937401U) disclose a kind of two-spool blade and rotor sidewall has not been produced to the vane type motor of circle friction, there are two kinds of structural types, the one,, blade radial outward edge does not produce circle friction with the external rotor madial wall of motor; The 2nd,, blade radial inward flange does not produce circle friction with the internal rotor outer side wall of motor.Internal rotor is cylindrical body, and external rotor is the cylindrical body being enclosed within outside internal rotor, and the bearing that two covers are supporting and seal arrangement assembly are at cylindrical body axis two ends, and the axis of internal rotor is parallel with the axis of external rotor, disalignment; Centered by the axis of external rotor, do the equidistant point of external rotor, the blade of external rotor is set respectively on external rotor by equidistant point, be rigidly connected with external rotor.
Technique scheme adopts dual-rotor structure realization to reduce circle friction, extends the working life of motor, but this scheme complex structure, and cost is high.
Summary of the invention
The object of the invention is to cause stator inner surface inefficacy easy to wear in order to solve existing blade mechanism blade and stator inner surface sliding friction, affect the problem in product performance and life-span, and provide a kind of blade and stator inner surface to form the rolling friction of low wearing and tearing, have well, can enhance product performance and product reliability and the low wearing and tearing hydraulic machinery in life-span.
The present invention realizes the technological scheme that its technical purpose adopts: low wearing and tearing hydraulic machinery, comprise the rotor with some radial grooves, be slidably arranged in the some blades in each radial groove, be arranged on the stator that rotor exterior and internal surface are along the circumferential direction provided with at least one rising section and at least one decline section, be located at the side plate of stator and two ends of rotor, the end face that described blade outer end contacts with stator inner surface is provided with raceway, in raceway, be movably set with roll body, between fluid and raceway, there is fluid lubrication film, roll body face bulged blade front-end face, the blade roll body face while stretching out that slides contacts with stator Nei Biaonei rolling friction, stator inner surface rising section or side plate end face corresponding position are provided with influent stream window, stator inner surface decline section or side plate end face corresponding position are provided with out stream window, rotor outer circle face, stator inner surface, adjacent blades and roll body, side sheet room forms fluid operating chamber, being positioned at rising section fluid operating chamber communicates with influent stream window, be positioned at decline section fluid operating chamber and go out to flow window and communicate.This low wearing and tearing hydraulic machinery, by raceway being set on blade exterior edge face, and in raceway inside, roll body is set, between roll body and raceway, be formed with fluid lubrication film, roll body face bulged blade front-end face, in the time that blade slip is stretched out, roll body face contacts with stator inner surface, realize rolling friction contact, and blade front-end face no longer contacts stator inner surface.In working procedure, because stator inner surface rising section or side plate end face corresponding position are provided with influent stream window, stator inner surface decline section or side plate end face corresponding position are provided with out stream window, rotor outer circle face, stator inner surface, adjacent blades and roll body, side sheet room forms fluid operating chamber, being positioned at rising section fluid operating chamber communicates with influent stream window, be positioned at decline section fluid operating chamber and go out to flow window and communicate, fluid enters fluid operating chamber by influent stream window, by decline section fluid operating chamber with go out to flow window and be connected, realize fluid operating, in fluid operating inside cavity, roll body is realized rolling friction with stator inner surface and is contacted, thereby overcome sliding friction and caused the problem of stator inner surface inefficacy easy to wear, the more important thing is between this roll body and raceway and can form fluid lubrication film, improve the service behaviour of product, reliability and the life-span of product are improved.
As preferably, influent stream window and go out to flow window and be arranged on two ends or the neutral position of stator, influent stream window and go out to flow window and be respectively low-pressure fluid window or high-pressure liquid window.Influent stream window and go out to flow window and can be arranged on the two ends of stator shaft orientation, also can be arranged on the neutral position of stator shaft orientation, and when for pump, influent stream window is low-pressure fluid window, and going out to flow window is high-pressure liquid window, and during for motor, side is contrary.
As preferably, influent stream window and go out to flow window independence or be interconnected to be arranged at stator two ends, or influent stream window and go out to flow window and be provided be interconnected multiple, or influent stream window and go out to flow window and be provided with separate multiple.According to the working condition difference of hydraulic machinery, influent stream window and go out to flow window respectively with independence or communicate and be arranged at stator two ends, in the time that hydraulic machinery for larger discharge capacity uses, influent stream window and go out to flow window be interconnected multiple can be set respectively, to meet the needs of larger discharge capacity; Certainly if while using for lower pressure fluid window, influent stream window with go out to flow window and can arrange respectively separate multiple.During for pump, influent stream window is low-pressure fluid window, and going out to flow window is high-pressure liquid window, and during for motor, side is contrary.
As preferably, influent stream window and go out to flow window and be many arc groove structures and be arranged on the position of side plate corresponding to stator rising section and decline section, and the groove width of arc groove structure is less than the end arc diameter of roll body.Influent stream window and go out to flow window and be arranged to many arc groove structures, low-pressure fluid and high-pressure liquid can be entered or be flowed out by the window of arc groove structure, and the groove width of arc groove structure is less than the end arc diameter of roll body, influent stream window and the design that goes out to flow window said structure, for roll body is moved in the scope of its regulation, roll body end can not be altered and move to window, to ensure normal good work.
As preferably, influent stream window and go out to flow window and be uniform multiple borehole structures and be arranged on the position of side plate corresponding to stator rising section and decline section, and the aperture of borehole structure is less than roll body end arc diameter.Influent stream window and go out to flow window and also can be arranged to equally distributed multiple borehole structure, the aperture of borehole structure is less than roll body end arc diameter simultaneously, and roll body is remained in its range of movement, its end can play to window, to ensure normal work.Certainly, influent stream window and go out to flow window and also can be designed to other forms, and according to the size of roll body end size appropriate design window, make roll body in its range of movement, roll body end not play to window, to ensure normal work.
As preferably, influent stream window and go out to flow window near between rotor one side and stator inner surface, rib being set on side plate, blade below is provided with spring, the spring of blade below is cylindrical spring or coil component spring, while adopting cylindrical spring, cylindrical spring is arranged on blade bottom surface or blade end positions, and while adopting coil component spring, spring is arranged on bottom, blade two ends.What rib was set is in order to ensure that roll body is not offset in tram motion, and below blade, is provided with spring, and roll body is remained within the scope of rib, and spring suitably designs the pressure of blade, and it is normally worked.While using cylindrical spring, spring is contained in blade bottom surface or blade end positions; Also can use coil component spring, coil component spring can be located at bottom, blade two ends place or other positions, two ends.
As preferably, blade exterior two ends arrange the limit stoper that is mechanically connected to blade, and the height of described limit stoper is lower than roll body outer end circular arc peak.Mechanical connection manner is passed through at the blade exterior anterior two ends that namely blade stretches out blade groove, be provided with limit stoper, the height of limit stoper is no more than the peak at circular arc top, roll body outer end, such structure makes roll body remain on design attitude to take exercises, limit stoper height is no more than roll body top, to ensure that roll body has good contacting with stator inner surface, realize rolling friction, improve performance and the life-span of product.
As preferably, blade outer end vertically middle part arranges centering device, and roll body vertically middle part is provided with groove corresponding to centering device, and described groove is equipped with centering device and contacts with centering device.Blade outer end vertically middle part arranges centering device, middle part corresponding to centering device roll body is provided with groove, groove is equipped with and contacts with centering device, and the setting of centering device is in order to realize the setting placed in the middle to roll body, makes it remain at good position.
As preferably, described centering device comprises location spheroid and retaining spring, on described blade, be provided with mounting groove, described retaining spring is arranged on mounting groove inside, and described location spheroid is arranged on the upper end of retaining spring and matches and contact with the groove on roll body.The groove depth of described groove is more shallow.Centering device comprises location spheroid and retaining spring, retaining spring is arranged on the mounting groove inside of blade, retaining spring is equipped with in the below of location spheroid, and location spheroid is arranged on retaining spring upper end and contacts with groove fit, to guarantee that the Surface of Sphere of locating spheroid has good contacting with the groove on roll body, to realize the object in determining, and the groove depth of groove can not be excessive, what arrange is more shallow, to avoid active chamber fluid leakage too much.
As preferably, roll body is cylindrical body, and raceway is equipped with into arc structure with cylindrical body, the bottom of raceway is provided with film forming groove vertically, described film forming groove is shallow slot, is radially provided with the aperture that is communicated with film forming groove on blade, and the lower end of aperture communicates with blade cavity of resorption or fluid chamber.The preferred cylindrical body of roll body, the good fluid film forming between cylindrical body and raceway, in the bottom of blade raceway, film forming groove is set, and the aperture that film forming groove is disposed radially by blade communicates with blade cavity of resorption or other fluid chamber, make pressure fluid be communicated with film forming groove through aperture, make to form between cylindrical body roll body and raceway better fluid rete, Optimization Work performance.
The invention has the beneficial effects as follows: the present invention is by arranging rotatable cylindrical body roll body on the end face contacting with stator inner surface at blade front end, on stator or side plate, be provided with influent stream window and go out to flow window, between cylinder and blade raceway, form fluid lubrication film, cylindrical body roll body can remain on blade raceway and the reliable and stable work of side sheet room, cylindrical body roll body and stator inner surface form the rolling friction of low wearing and tearing, improve product performance, improved reliability and the life-span of product.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the low wearing and tearing hydraulic machinery of the present invention;
Fig. 2 is influent stream window and go out to flow window and be located at a kind of structural representation on stator in the present invention;
Influent stream window and go out to flow window and be located at the second structural representation on stator in Fig. 3 the present invention;
Fig. 4 is influent stream window and go out to flow window and be located at the third structural representation on stator in the present invention;
Fig. 5 is influent stream window and go out to flow window and be located at the 4th kind of structural representation on stator in the present invention;
Fig. 6 is influent stream window and go out to flow window and be located at a kind of structural representation on side plate in the present invention;
Fig. 7 is influent stream window and go out to flow window and be located at the second structural representation on side plate in the present invention;
Fig. 8 is a kind of structural representation that centre rib of the present invention is combined with cylindrical spring;
Fig. 9 is a kind of structural representation that centre rib of the present invention is combined with coil component spring;
Figure 10 is a kind of structural representation of limit stoper in the present invention;
Figure 11 is the another kind of structural representation of limit stoper in the present invention;
Figure 12 is a kind of structural representation of centering device in the present invention;
Figure 13 is a kind of structural representation that in the present invention, film forming groove is connected with aperture;
In figure: 1, radial groove, 2, rotor, 3, blade, 4, rising section, 5, decline section, 6, stator, 7, side plate, 8, raceway, 9, roll body, 10, influent stream window, 11, go out to flow window, 12, fluid operating chamber, 13, film forming groove, 14, aperture, 15, arc groove structure, 16, borehole structure, 17, rib, 18, spring, 19, limit stoper, 20, centering device, 21, groove, 22, location spheroid, 23, retaining spring, 24, mounting groove.
Embodiment
Also by reference to the accompanying drawings technological scheme of the present invention is described in further detail below by specific embodiment.
Embodiment 1:
In the embodiment shown in fig. 1, a kind of low wearing and tearing hydraulic machinery, comprise the rotor 2 with some radial grooves 1, be slidably arranged in the some blades 3 in each radial groove 1, be arranged on the stator 6 that rotor 2 outsides and internal surface are along the circumferential direction provided with at least one rising section 4 and at least one decline section 5, be located at the side plate 7 at stator 6 and rotor 2 two ends, blade 3 outer ends are provided with raceway 8 with the end face that stator 6 internal surfaces contact, in raceway 8, be movably set with roll body 9, between roll body 9 and raceway 8, there is fluid lubrication film, roll body face bulged blade front-end face, the blade roll body face while stretching out that slides contacts with stator Nei Biaonei rolling friction, stator inner surface rising section 4 is provided with influent stream window 10, stator inner surface decline section 5 is provided with out stream window 11, rotor 2 peripheries, stator 6 internal surfaces, adjacent blades 3 and roll body 9, 7 of side plates form fluid operating chamber 12, being positioned at rising section fluid operating chamber 12 communicates with influent stream window 10, be positioned at decline section fluid operating chamber 12 and go out to flow window 11 and communicate.
Influent stream window 10 or go out to flow window 11 and be arranged on the two ends of stator 6, two ends window can independence or the setting that is interconnected (seeing Fig. 2, Fig. 3), influent stream window 10 and go out to flow window 11 and be respectively low-pressure fluid window or high-pressure liquid window.During for pump, influent stream window is low-pressure fluid window, and going out to flow window is high-pressure liquid window, and during for motor, side is contrary.
Roll body 9 is cylindrical body, raceway 8 is equipped with into arc structure with cylindrical body, and the bottom of raceway 8 is provided with vertically film forming groove 13(and sees Figure 12), film forming groove 13 is shallow slot, on blade 3, be radially provided with the aperture 14 that is communicated with film forming groove 13, the lower end of aperture 14 communicates with blade cavity of resorption or fluid chamber.Make pressure fluid be communicated with film forming groove through aperture, make to form between roll body cylindrical body and raceway better fluid rete, Optimization Work performance.
Embodiment 2:
In the embodiment shown in fig. 4, a kind of low wearing and tearing hydraulic machinery, comprise the rotor 2 with some radial grooves 1, be slidably arranged in the some blades 3 in each radial groove 1, be arranged on the stator 6 that rotor 2 outsides and internal surface are along the circumferential direction provided with at least one rising section 4 and at least one decline section 5, be located at the side plate 7 at stator 6 and rotor 2 two ends, blade 3 outer ends are provided with raceway 8 with the end face that stator 6 internal surfaces contact, in raceway 8, be movably set with roll body 9, between roll body 9 and raceway 8, there is fluid lubrication film, roll body face bulged blade front-end face, the blade roll body face while stretching out that slides contacts with stator Nei Biaonei rolling friction, stator inner surface rising section 4 is provided with influent stream window 10, stator inner surface decline section 5 is provided with out stream window 11, rotor 2 peripheries, stator 6 internal surfaces, adjacent blades 3 and roll body 9, 7 of side plates form fluid operating chamber 12, being positioned at rising section fluid operating chamber 12 communicates with influent stream window 10, be positioned at decline section fluid operating chamber 12 and go out to flow window 11 and communicate.
Influent stream window 10 or go out to flow window 11 and be arranged on centre and the end positions of stator 6, influent stream window 10 or go out to flow window 11 and be provided with three that are interconnected, influent stream window 10 and go out to flow window 11 and be respectively low-pressure fluid window or high-pressure liquid window.During for pump, influent stream window is low-pressure fluid window, and going out to flow window is high-pressure liquid window, and during for motor, side is contrary.This embodiment's Applicable scope is in the larger hydraulic machinery of discharge capacity.
Roll body 9 is cylindrical body, raceway 8 is equipped with into arc structure with cylindrical body, and the bottom of raceway 8 is provided with film forming groove 13 vertically, and film forming groove 13 is shallow slot, on blade 3, be radially provided with the aperture 14 that is communicated with film forming groove 13, the lower end of aperture 14 communicates with blade cavity of resorption or fluid chamber.Make pressure fluid be communicated with film forming groove through aperture, make to form between roll body cylindrical body and raceway better fluid rete, Optimization Work performance.
Embodiment 3:
In the embodiment shown in fig. 5, its technological scheme is substantially the same manner as Example 1, and difference is: influent stream window 10 or go out to flow window 11 and be provided with separate three, this embodiment is applicable to the hydraulic machinery of lower pressure fluid window.
Embodiment 4:
In the embodiment shown in fig. 6, a kind of low wearing and tearing hydraulic machinery, comprise the rotor 2 with some radial grooves 1, be slidably arranged in the some blades 3 in each radial groove 1, be arranged on the stator 6 that rotor 2 outsides and internal surface are along the circumferential direction provided with at least one rising section 4 and at least one decline section 5, be located at the side plate 7 at stator 6 and rotor 2 two ends, blade 3 outer ends are provided with raceway 8 with the end face that stator 6 internal surfaces contact, in raceway 8, be movably set with roll body 9, between roll body 9 and raceway 8, there is fluid lubrication film, roll body face bulged blade front-end face, the blade roll body face while stretching out that slides contacts with stator Nei Biaonei rolling friction, side plate 7 end faces of stator inner surface rising section 4 correspondences are provided with influent stream window 10, on side plate 7 end faces of stator inner surface decline section 5 correspondences, be equipped with out stream window 11, rotor 2 peripheries, stator 6 internal surfaces, adjacent blades 3 and roll body 9, 7 of side plates form fluid operating chamber 12, being positioned at rising section fluid operating chamber 12 communicates with influent stream window 10, be positioned at decline section fluid operating chamber 12 and go out to flow window 11 and communicate.
Influent stream window 10 and go out to flow window 11 and be many arc groove structures 15 and be arranged on the position of side plate 7 corresponding to stator rising section and decline section, and the groove width of arc groove structure 15 is less than the end arc diameter of roll body 9.
Embodiment 5:
In the embodiment shown in fig. 7, basic identical with the scheme in embodiment 4, difference is: influent stream window 10 and go out to flow window 11 and be uniform multiple borehole structures 16 and be arranged on the position of side plate 7 corresponding to stator rising section and decline section, and the aperture of borehole structure 16 is less than roll body 9 end arc diameters.
Be designed to the influent stream window of the forms such as many arc groove structures or multiple borehole structures or go out to flow window, stretch out the Sizes design arc groove structure 15 of blade tip or the window size of multiple borehole structure 16 according to roll body cylindrical body, make cylinder in its range of movement, its end not play to window, to ensure normal work.
Embodiment 6:
In the embodiment shown in fig. 8, this technological scheme and embodiment 4 are basically identical, difference is: influent stream window 10 and go out to flow window 11 near between rotor 2 one sides and stator 6 internal surfaces, rib 17 being set on side plate 7, blade 3 belows are provided with spring 18, the spring 18 of blade below is cylindrical spring, while adopting cylindrical spring, cylindrical spring is arranged on blade bottom surface or blade end positions.
Embodiment 7:
In the embodiment shown in fig. 9, this technological scheme and embodiment 6 are basically identical, difference is: influent stream window 10 and go out to flow window 11 near between rotor 2 one sides and stator 6 internal surfaces, rib 17 being set on side plate 7, blade 3 belows are provided with spring 18, the spring 18 of blade below is coil component spring, while adopting coil component spring, spring is arranged on bottom, blade two ends.
In embodiment 6 and embodiment 7, adopt the project organization of rib, to ensure that cylinder is not offset in tram motion, and below blade, be provided with spring, cylinder is remained within the scope of rib.While using cylindrical spring, spring is contained in blade bottom surface or blade end positions.Also can use coil component spring, spring can be located at bottom, blade two ends place or other positions, two ends.
Embodiment 8:
In the embodiment shown in Figure 10, Figure 11, basic identical with the technological scheme in embodiment 1 or embodiment 4, difference is: the outside two ends of blade 3 arrange the limit stoper 19 that is mechanically connected to blade, and the height of limit stoper 19 is lower than roll body 9 outer end circular arc peaks.Make cylinder remain on design attitude motion.Limit stoper height is no more than column top, to ensure cylinder and stator inner surface good contact.Limit stoper is mechanically connected with blade.
Embodiment 9:
In the embodiment shown in Figure 13, basic identical with the technological scheme in embodiment 1 or embodiment 4, difference is: blade 3 outer ends vertically middle part arrange centering device 20, roll body 9 vertically middle part is provided with groove 21 corresponding to centering device 20, and groove 21 is equipped with centering device 20 and contacts with centering device 20.
Centering device 20 comprises location spheroid 22 and retaining spring 23, on blade 3, be provided with mounting groove 24, retaining spring 23 is arranged on mounting groove 24 inside, location spheroid 22 is arranged on the upper end of retaining spring 23 and matches and contact with the groove 21 on roll body 9, and the groove depth of groove 21 is less than location spheroid 1/22nd 3 spherical crown height.Retaining spring is equipped with in spheroid below, blade location, to guarantee that the Surface of Sphere of locating spheroid has good contacting with the groove on roll body cylindrical body.Centering device adopts the location spheroid of spheroidal, to guarantee that roll body cylindrical body moves in tram.It is more shallow that groove on blade arranges, and avoids active chamber fluid leakage too much.
Low wearing and tearing hydraulic machinery described in above-described embodiment, install rotatable cylindrical body roll body by stretch to the front end of stator inner surface at blade, on stator or on side plate, be shaped with influent stream window and go out to flow window, between the raceway on cylindrical body roll body and blade, form good fluid lubrication film, also can between side plate and stator inner surface, rib be set, to ensure that cylindrical body is not offset in tram motion, and below blade, be provided with spring, cylindrical body is remained within the scope of rib.While using cylindrical spring, spring is contained in blade bottom surface or blade end positions.Also can use coil component spring, spring can be located at bottom, blade two ends place or other positions, two ends.
Influent stream window or go out to flow window and can be designed to the forms such as many arc groove structures or multiple borehole structures, and the Sizes design strip arc groove structure of the part of protruding according to cylindrical body or the size of multiple poroid borehole structure windows, make cylindrical body in its range of movement, cylindrical end not play to window, to ensure normal work.
Be provided with limit stoper by mechanical connection manner at blade exterior two ends, the height of limit stoper is lower than roll body outer end circular arc peak.The setting of limit stoper can make cylindrical body remain on design attitude motion.Limit stoper height is no more than the part that cylindrical body protrudes, to ensure that cylindrical body and stator inner surface have good contacting.
Blade outer end vertically middle part arranges centering device, to guarantee that cylindrical body moves in tram.It is more shallow that groove arranges, and is too much for fear of active chamber fluid leakage.Affect the normal work of hydraulic machinery.
In order further to increase the formation of the fluid film between cylindrical body and raceway, be provided with vertically film forming groove in the bottom of blade raceway, on blade, be radially provided with the aperture that is communicated with film forming groove, the lower end of aperture communicates with blade cavity of resorption or other fluid chamber.Make pressure fluid be communicated with film forming groove through aperture by aperture, make to form between cylindrical body and raceway better fluid rete, Optimization Work performance.
This low wearing and tearing hydraulic machinery, cylindrical body remains at the position of blade raceway and side plate setting, and to ensure that it has reliable and stable work, cylindrical body roll body and stator inner surface form the rolling friction of low wearing and tearing, improve product performance, improved product reliability and life-span.
This low wearing and tearing hydraulic machinery, can be widely used in oil hydraulic pump, and oil hydraulic motor also can both make pump and also do motor use, and using scope is extensive, and effect is remarkable.
Claims (10)
1. low wearing and tearing hydraulic machinery, comprise the rotor (2) with some radial grooves (1), be slidably arranged in the some blades (3) in each radial groove (1), be arranged on the stator (6) that rotor (2) outside and internal surface are along the circumferential direction provided with at least one rising section (4) and at least one decline section (5), be located at the side plate (7) at stator (6) and rotor (2) two ends, it is characterized in that: described blade (3) outer end is provided with raceway (8) with the end face that stator (6) internal surface contacts, in raceway (8), be movably set with roll body (9), between roll body (9) and raceway (8), there is fluid lubrication film, roll body face bulged blade front-end face, blade (3) the roll body face while stretching out that slides contacts with stator Nei Biaonei rolling friction, stator inner surface rising section (4) or side plate (7) end face corresponding position are provided with influent stream window (10), stator inner surface decline section (5) or side plate (7) end face corresponding position are provided with out stream window (11), rotor outer circle face, stator inner surface, adjacent blades (3) and roll body (9), between side plate (7), form fluid operating chamber (12), being positioned at rising section fluid operating chamber (12) communicates with influent stream window (10), be positioned at decline section fluid operating chamber (12) and go out to flow window (11) and communicate.
2. low wearing and tearing hydraulic machinery according to claim 1, it is characterized in that: influent stream window (10) and go out to flow window (11) and be arranged on two ends or the neutral position of stator (6), influent stream window (10) and go out to flow window (11) and be respectively low-pressure fluid window or high-pressure liquid window.
3. low wearing and tearing hydraulic machinery according to claim 2, it is characterized in that: influent stream window (10) and go out to flow window (11) independence or be interconnected to be arranged at stator (6) two ends, or influent stream window (10) and go out to flow window (11) and be provided be interconnected multiple, or influent stream window (10) and go out to flow window (11) and be provided with separate multiple.
4. according to the low wearing and tearing hydraulic machinery described in claim 1 or 2 or 3, it is characterized in that: influent stream window (10) and go out to flow window (11) and be many arc groove structures (15) and be arranged on the position corresponding to stator rising section (4) and decline section (5) on side plate, and the groove width of arc groove structure (15) is less than the end arc diameter of roll body (9).
5. according to the low wearing and tearing hydraulic machinery described in claim 1 or 2 or 3, it is characterized in that: influent stream window (10) and go out to flow window (11) and be uniform multiple borehole structures (16) and be arranged on the position corresponding to stator rising section (4) and decline section (5) on side plate, and the aperture of borehole structure (16) is less than roll body end arc diameter.
6. according to the low wearing and tearing hydraulic machinery described in claim 1 or 2 or 3, it is characterized in that: influent stream window (10) and go out to flow window (11), near between rotor one side and stator inner surface, rib (17) is set on side plate, blade below is provided with spring (18), the spring of blade below is cylindrical spring or coil component spring, while adopting cylindrical spring, cylindrical spring is arranged on blade bottom surface or blade end positions, and while adopting coil component spring, spring is arranged on bottom, blade two ends.
7. according to the low wearing and tearing hydraulic machinery described in claim 1 or 2 or 3, it is characterized in that: the anterior two ends of blade are provided with the limit stoper (19) that is connected in mechanically blade, and the height of described limit stoper (19) is lower than roll body (9) outer end circular arc peak.
8. according to the low wearing and tearing hydraulic machinery described in claim 1 or 2 or 3, it is characterized in that: blade front end edge axially middle part arranges centering device (20), roll body (9) vertically middle part is provided with groove (21) corresponding to centering device, and described groove (21) is equipped with centering device (20).
9. low wearing and tearing hydraulic machinery according to claim 8, it is characterized in that: described centering device (20) comprises location spheroid (22) and retaining spring (23), on described blade, be provided with mounting groove (24), described retaining spring (23) is arranged on mounting groove (24) inside, and described location spheroid (22) is arranged on the upper end of retaining spring (23) and matches and contact with the groove (21) on roll body.
10. according to the low wearing and tearing hydraulic machinery described in claim 1 or 2 or 3, it is characterized in that: roll body (9) is cylindrical body, raceway (8) is equipped with into arc structure with cylindrical body, the bottom of raceway (8) is provided with film forming groove (13) vertically, described film forming groove (13) is shallow slot, on blade, be radially provided with the aperture (14) that is communicated with film forming groove, the lower end of aperture (14) communicates with blade cavity of resorption or fluid chamber.
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| CN201410279593.XA CN104179679B (en) | 2014-06-23 | 2014-06-23 | Low abrasion hydraulic machinery |
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| CN201410279593.XA CN104179679B (en) | 2014-06-23 | 2014-06-23 | Low abrasion hydraulic machinery |
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| CN104179679A true CN104179679A (en) | 2014-12-03 |
| CN104179679B CN104179679B (en) | 2016-10-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213306A (en) * | 2016-12-15 | 2018-06-29 | 李富申 | What a kind of swager used is servo-actuated low friction tup |
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| CN104179679B (en) | 2016-10-05 |
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Effective date of registration: 20161201 Address after: 315040 Zhejiang province Jiangdong District of Ningbo City Thunder Lane No. 116 Patentee after: Hu Yang Address before: West Road north of the city of Xianju County of Taizhou City, Zhejiang Province, No. 31 317300 Patentee before: Hu Kai |