CN102536625B - Cylindrical vane hydraulic motor - Google Patents
Cylindrical vane hydraulic motor Download PDFInfo
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- CN102536625B CN102536625B CN201110453954.4A CN201110453954A CN102536625B CN 102536625 B CN102536625 B CN 102536625B CN 201110453954 A CN201110453954 A CN 201110453954A CN 102536625 B CN102536625 B CN 102536625B
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Abstract
The invention discloses a cylindrical vane hydraulic motor, which comprises a shell, a rotor, two vanes, two sealing strips, two oil distribution cones and two cushion blocks, wherein the rotor is located at the center; the shell is located outside; the two oil distribution cones are respectively located in hollow conical surfaces at two ends of the rotor; the two vanes are respectively located at two sides of the rotor and placed in diagonal hollow circular rings of the shell so as to form an angle with the rotor, and the tangent of the angle is the ratio of the shell height to the bottom circle diameter of the shell; one plane of each vane is stuck to the truncated cone side surface of each oil distribution cone; the sealing strips are located between the rotor and the vanes, the plane side of each sealing strip is stuck to one plane of the rotor, and the cylindrical side of the sealing strip is stuck to the cylindrical surface E1 of each vane; the cushion blocks are located in the diagonal hollow circular rings of the shell, and are just filled in the gap formed by the vanes, the rotor and the sealing strips. According to the invention, all sealed positions are of face seal, the efficiency is high, the torque is large, the torque output is large, the structure is compact and the life is long.
Description
Technical field
The present invention relates to a kind of hydraulic motor, particularly relate to a kind of cylindrical vane hydraulic motor.
Background technology
Existing vane motor structure is a rotor eccentricity and is placed in cylinder body, blade radial or be placed in rotor with rotor radius is angled, and during work, blade throws away under the effect of spring or oil pressure, forms annular seal space with cylinder body.This form vane motor is owing to being seal by a contact wire between blade and cylinder body, and therefore sealing property is poor, and output torque is lower, very large friction is produced between blade and rotor and cylinder body when adding rotation, cause vane motor overall wear fast, the life-span is short, and efficiency is low.In addition, in order to ensure that blade safety can pass in and out in rotor during rotation, rotor must have suitable diameter, and the volume that is bound to like this is large, and moment of torsion is little.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of cylindrical vane hydraulic motor is provided.Compact conformation of the present invention, specific power is large, and whole sealing place is face sealing, and not easy to wear, and the life-span is long.
In order to achieve the above object, the technical solution used in the present invention is as follows: a kind of cylindrical vane hydraulic motor, comprising: housing, rotor, two blades, two sealing strips, two join oil cone and two cushion blocks; Rotor is positioned at center, housing is positioned at outside, joining oil cone for two lays respectively in two ends of rotor conical hollow face, two blades lay respectively at the both sides of rotor, and be placed in housing diagonal angle hollow ring in, with rotor at an angle, the ratio being just cut to thickness of shell and circular diameter at the bottom of housing of this angle; A plane of blade with join the frustum cone side that oil bores and fit, sealing strip is between rotor and blade, a plane of its plane side and rotor is fitted, then fit with the cylinder E1 of blade in cylinder side, cushion block be positioned at housing diagonal angle hollow ring, just in time fill up the vacancy formed by blade, rotor and sealing strip.
Described blade is enclosed by two plane A1, B1 and two cylinders C1, E1 and forms; Wherein, the cylinder that cylinder C1 is center is centre of sphere O1, radius is identical with the radius of the cylinder E4 of the hollow ring of housing, cylinder E1 is center is centre of sphere O1, radius is the cylinder of O1K1, and some K1 was the vertical axis of symmetry of centre of sphere O1 and the intersection point of cylinder E1; Two plane A1 are parallel with B1, connect cylinder C1 and E1; The distance of two parallel plane A1 and B1 is the thickness of blade, and the thickness of blade is equal with the hollow ring width of housing; The length of O1K1 is the half of rotor thickness and the height sum of sealing strip;
the cylinder that being a center on the upside of described sealing strip is centre of sphere O1, radius is equal with the cylinder E1 radius of blade, downside is a plane, the vertical range of centre of sphere O1 and this underside plan is the half of rotor thickness, the cylinder that cylinder G1 is center is O1, radius is equal with the cylinder P2 radius of rotor, the sphere that sphere F1 is the centre of sphere is O1, radius equals rotor line segment O2M2, plane H1 is parallel with I1, and the width (i.e. the distance of plane H1 and I1) of sealing strip is equal with vane thickness; R1 and S1 is two gradients with face D4 in housing for the equal inclined-plane of the gradient of B4; Blade and sealing strip are axial symmetry;
one flat plate in the middle of described rotor, in the middle of dull and stereotyped, two waist places are two identical director circle platforms, one of them director circle platform bottom surface is face B2, the cloudy face of cylinder P2 that in the middle of to be center be upper bottom surface and dull and stereotyped joint O2 radius and sealing strip, the radius of cylinder G1 is identical, director circle platform cone angle is identical with the cone angle of cloudy round platform H2, A2 with B2 is parallel disk, I2 with J2 is parallel plate level, the cylinder of E2 and F2 to be center be O2, G2 with H2 is two identical cloudy round platform surface, one of them cloudy round platform upper and lower two ends, are disk B2 respectively and take K2L2 as the disc of diameter, the distance of two parallel plane I2 and J2 is the thickness of rotor, the length of straigh line of K2M2 is the width of rotor, whole rotor is not only symmetrical about center O2, also be axial symmetry,
described join oil cone be a round platform, the radius of cloudy upper and lower two bottom surfaces of round platform is equal with rotor respectively for the radius of end face A3 and bottom surface B3, highly also the height of round platform cloudy with rotor is equal, two join the locus of oil cone to determine as follows: after guarantee assembles, two join oil cone frustum cone side, and corresponding parallel plane C4 or D4 fits with the hollow ring of corresponding housing respectively, the conical surface of some D3 to E3 is oil extraction face, and the conical surface of some D3 to G3 is oil-feed face, and some D3 was the trunnion axis in the center of circle and the intersection point of bottom surface B3; The position of some E3 and some G3 is when rotor forwards to perpendicular to paper position, former and later two intersection points of rotor left side plan and end circle;
described housing is cylinder, thickness is equal with the width K2M2 of rotor, end face A4 and bottom surface B4 are the parallel disks that two radiuses are equal, cylinder F4 is centered by O4, the cylinder that radius is equal with the radius of outside cylinder E2 and F2 about rotor, the diagonal angle of housing cylinder is a hollow ring, and two side C4 with D4 of hollow ring are parallel planar circulars, E4 is the cylinder of central shaft by O4, is positioned on the diagonal of housing; Whole housing is symmetrical about billiard table center O4;
Described cushion block is one section of annulus, its lateral surface A5 is the cylinder that radius is equal with the cylinder E4 external diameter of housing hollow ring, medial surface B5 is the sphere that radius equals rotor line segment O2M2, sphere, two waist C5 and D5 are the cylinders that radius is equal with the radius of blade bottom surface cylinder E1, and the thickness of cushion block is identical with vane thickness; Cushion block shape is axial symmetry;
Hydraulic oil inputs from the oil-feed face of the some D3 to G3 joining oil cone, and low pressure oil exports from the oil extraction face of the some D3 to E3 joining oil cone, and hydraulic motor output torque is to load.
The invention has the beneficial effects as follows:
1) all sealings place are face sealing;
2) volume is little, and moment of torsion is large, and efficiency is high;
3) specific power is large;
4) compact conformation, processing is relatively easy;
5) cost is lower, and the life-span is long.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is blade shape schematic diagram of the present invention
Fig. 2 is the left view of Fig. 1;
Fig. 3 is gasket structure schematic diagram of the present invention;
Fig. 4 be in Fig. 3 Q1 to schematic diagram;
Fig. 5 is rotor structure schematic diagram of the present invention;
Fig. 6 is the W-W sectional view of Fig. 5;
Fig. 7 is the T-T sectional view of Fig. 5;
Fig. 8 of the present inventionly joins oily wimble structure schematic diagram;
Fig. 9 is that the P of Fig. 8 is to schematic diagram
Figure 10 is shell structure schematic diagram of the present invention;
Figure 11 is the sectional view of housing;
Figure 12 is the M-M sectional view of Figure 11;
Figure 13 is overall structure schematic diagram of the present invention;
Figure 14 is that the K of Figure 13 is to schematic diagram;
Figure 15 is the N-N sectional view of Figure 13;
Figure 16 is operation logic schematic diagram of the present invention;
Figure 17 is the U-U sectional view of Figure 13;
Figure 18 is course of work principle schematic of the present invention;
Figure 19 is the V-V sectional view of Figure 16;
Figure 20 is course of work principle schematic of the present invention;
In figure: housing 1, rotor 2, blade 3, sealing strip 4, join oil cone 5, cushion block 6.
Detailed description of the invention
As shown in figure 16, cylindrical vane hydraulic motor of the present invention comprises housing 1, rotor 2, two blades 3, two sealing strips 4, two join oil cone 5 and two cushion blocks 6.Rotor 2 is positioned at center, housing 1 is positioned at outside, joining oil cone 5 for two lays respectively in conical hollow face, rotor 2 two ends, two blades 3 lay respectively at the both sides of rotor 2, and be placed in housing 1 diagonal angle hollow ring (i.e. gathering sill) in, with rotor 2 at an angle, this angle be just cut to housing 1 height and the ratio of housing 1 end circular diameter.A plane of blade 3 with join the frustum cone side that oil bores 5 and fit, sealing strip 4 is between rotor 2 and blade 3, a plane of its plane side and rotor 2 is fitted, then fit with the cylinder E1 of blade 3 in cylinder side, cushion block 6 be positioned at housing 1 diagonal angle hollow ring, just in time fill up the vacancy formed by blade 3, rotor 2 and sealing strip 4.
Fig. 1 and the shape that Figure 2 shows that blade 3 of the present invention.Blade 3 is enclosed by two plane A1, B1 and two cylinders C1, E1 and forms, wherein, the cylinder that cylinder C1 is center is centre of sphere O1, radius is identical with the radius of the cylinder E4 of the hollow ring of housing 1, cylinder E1 is center is centre of sphere O1, radius is the cylinder of O1K1, and some K1 was the vertical axis of symmetry of centre of sphere O1 and the intersection point of cylinder E1.Two plane A1 are parallel with B1, connect cylinder C1 and E1.The distance of two parallel plane A1 and B1 is blade 3 thickness, and blade 3 thickness is equal with the hollow ring width of Figure 11 housing 1.The length of O1K1 is the height sum of a half-sum sealing strip of Fig. 6 rotor 2 thickness.
Fig. 3 and the shape that Figure 4 shows that sealing strip 4 of the present invention.As shown in Figure 4, the cylinder that being a center on the upside of sealing strip 4 is centre of sphere O1, radius is equal with blade 3 cylinder E1 radius, downside is a plane, the vertical range of centre of sphere O1 and this underside plan is the half of Fig. 6 rotor 2 thickness, the cylinder that cylinder G1 is center is O1, radius is equal with Fig. 5 rotor 2 cylinder P2 radius, the sphere that sphere F1 is the centre of sphere is O1, radius equals Fig. 5 rotor 2 line segment O2M2, plane H1 is parallel with I1, and width (i.e. the distance of plane H1 and I1) is equal with the thickness of blade 3.R1 and S1 is two gradients with face D4 in Figure 11 for the equal inclined-plane of the gradient of B4.Blade 3 and sealing strip 4 are axial symmetry.
Fig. 5, Fig. 6 and Figure 7 shows that the shape of rotor 2 of the present invention.One flat plate in the middle of rotor 2, in the middle of dull and stereotyped, two waist places are two identical director circle platforms, one of them director circle platform is gone to the bottom as B2, the cloudy face of cylinder P2 of to be center be upper base and dull and stereotyped joint O2, director circle platform cone angle is identical with the cone angle of cloudy round platform H2, A2 with B2 is parallel disk, I2 with J2 is parallel plate level, the cylinder of E2 and F2 to be center be O2, G2 with H2 is two identical cloudy round platform surface, one of them cloudy round platform upper and lower two ends, are disk B2 respectively and take K2L2 as the disc of diameter, the distance of two parallel plane I2 and J2 is rotor 2 thickness, the length of straigh line of K2M2 is the width of rotor 2, whole rotor 2 is not only symmetrical about center O2, also be axial symmetry.
Fig. 8 and Figure 9 shows that of the present invention join oil cone 5 shape.Joining oil cone 5 is round platforms, the radius of end face A3 and bottom surface B3 is equal with the radius of two bottom surfaces up and down of the cloudy round platform of rotor 2 respectively, highly also equal with the height of the cloudy round platform of rotor 2, two locus of joining oil cone 5 are with following and determine: after ensureing to assemble, two join oil and bore 5 frustum cone sides and fit with corresponding parallel plane C4 or D4 of the hollow ring of corresponding housing 1 respectively, the conical surface of some D3 to E3 is oil extraction face, the conical surface of some D3 to G3 is oil-feed face, point D3 was the trunnion axis in the center of circle and the intersection point of bottom surface B3, point E3 and some G3 position be when rotor 2 as shown in Figure 5 paper position forward to as shown in figure 16 perpendicular to paper position time, former and later two intersection points of rotor 2 left side plan and end circle.
Figure 10, Figure 11 and Figure 12 shows that the shape of housing 1 of the present invention.Housing 1 is cylinder, thickness is equal with the width K2M2 of rotor 2, end face A4 and bottom surface B4 are the parallel disks that radius is equal, cylinder F4 is centered by O4, the cylinder that radius is equal with the radius of rotor about 2 outside cylinder E2 and F2, the diagonal angle of housing 1 cylinder is a hollow ring, and two side C4 with D4 of hollow ring are parallel planar circulars, E4 is the cylinder of central shaft by O4, is positioned on the diagonal of housing.Whole housing 1 is symmetrical about billiard table center O4.
The shape of cushion block 6 has been shown in Figure 15.Cushion block 6 is one section of annulus, its lateral surface A5 is the cylinder that radius is equal with housing 1 hollow ring E4 external diameter, medial surface B5 is the sphere that radius equals Fig. 5 rotor 2 line segment O2M2, two waist C5 and D5 are the cylinders that radius is equal with the radius of blade 3 bottom surface cylinder E1, and the thickness of cushion block 6 is identical with blade 3 thickness.Cushion block 6 shape is axial symmetry.
As shown in figure 16, after column type vane motor of the present invention assembles, center O1, O2, O4 of each parts overlap.
Operation operation principle of the present invention is as follows:
As Figure 18, in one end of vane motor, rotor 2, blade 3, sealing strip 4, joins oil cone 5 and oil pocket is divided into three respective independently annular seal space Q1, Q2 and Q3 by housing 1.In one end of rotor 2, when rotor 2 is in oil-feed starting position (as Figure 13 or 7a), hydraulic oil enters oil pocket Q1 from the oil-feed face of joining oil cone, as Figure 18, at this moment oil pocket Q3 is filled with hydraulic oil, and oil pocket Q2 is then low pressure oil, the pressure reduction that three oil pockets are formed, rotor produces moment of torsion, rotor is rotated counterclockwise, then promote blade and be rotated counterclockwise.When rotor is rotated counterclockwise, the low pressure oil in oil pocket Q2 is discharged by the oil extraction face of joining oil cone.When hydraulic oil continues to enter oil pocket Q1 from the oil-feed face of joining oil cone, rotor continues to be rotated counterclockwise.When rotor forwards Figure 19 position to, and when continuing to be rotated counterclockwise, oil pocket Q3 becomes low pressure oil-discharging cavity then from high pressure oil suction chamber, and hydraulic oil then continues to enter oil pocket Q1, and oil pocket Q2 is still low pressure oil-discharging cavity.The moment of torsion that oil pressure difference produces continues drive rotor and is rotated counterclockwise, as Figure 20.At this moment Q1 is high pressure oil suction chamber, Q2 and Q3 is low pressure oil-discharging cavity.When rotor rotates counterclockwise Figure 17 position, the low pressure oil in oil-discharging cavity Q2 drains, and Q1 is still high pressure oil suction chamber, and Q3 is still low pressure oil-discharging cavity, and at this moment hydraulic oil enters new high pressure oil suction chamber from the oil-feed face of joining oil cone again, and drive rotor continues to be rotated counterclockwise.When rotor rotates to Figure 19 position, oil pocket Q1 becomes low pressure oil-discharging cavity then from high pressure oil suction chamber, and at this moment Q3 is still low pressure oil-discharging cavity, and hydraulic oil continues to enter new high pressure oil suction chamber, and drive rotor continues to be rotated counterclockwise.So go round and begin again, drive rotor is constantly rotated counterclockwise.At the other end of hydraulic motor, situation is also identical with this one end.
Compared with the patent application (number of patent application is 200810162980.x) before inventor, sealing strip becomes two from four, the sealing strip matched with a blade becomes a whole piece from two of dividing right and left, and which not only simplifies structure, and improves sealing effectiveness and reliability.Meanwhile, become director circle platform from sphere in the middle of rotor, make rotor intermediate volume less, space is larger.Thus output torque and specific power are increased considerably.
Above-described embodiment is used for explaining and the present invention is described, instead of limits this aspect, and in the protection domain of spirit of the present invention and claim, any amendment make this aspect and change, all fall into protection scope of the present invention.
Claims (1)
1. a cylindrical vane hydraulic motor, is characterized in that, it comprise housing (1), rotor (2), two blades (3), two sealing strips (4), two join oil cone (5) and two cushion blocks (6); Rotor (2) is positioned at housing (1) center, housing (1) is positioned at outside, joining oil cone (5) for two lays respectively in conical hollow face, rotor (2) two ends, two blades (3) lay respectively at the both sides of rotor (2), and in the hollow ring being placed in housing (1) diagonal angle and gathering sill, with rotor (2) at an angle, this angle be just cut to housing (1) height and the ratio of housing (1) end circular diameter; A plane of blade (3) fits with the frustum cone side of joining oil and bore (5), sealing strip (4) is positioned between rotor (2) and blade (3), a plane of its plane side and rotor (2) is fitted, then fit with the cylinder E1 of blade (3) in cylinder side, cushion block (6) is positioned at the hollow ring at housing (1) diagonal angle, just in time fills up the vacancy formed by blade (3), rotor (2) and sealing strip (4);
Described blade (3) is enclosed by two plane A1, B1 and two cylinders C1, E1 and forms; Wherein, the cylinder that cylinder C1 is center is centre of sphere O1, radius is identical with the radius of the cylinder E4 of the hollow ring of housing (1), cylinder E1 is center is centre of sphere O1, radius is the cylinder of O1K1, and some K1 was the vertical axis of symmetry of centre of sphere O1 and the intersection point of cylinder E1; Two plane A1 are parallel with B1, connect cylinder C1 and E1; The distance of two parallel plane A1 and B1 is the thickness of blade (3), and the thickness of blade (3) is equal with the hollow ring width of housing (1); The length of O1K1 is the half of rotor (2) thickness and the height sum of sealing strip (4);
The cylinder that described sealing strip (4) upside is a center is centre of sphere O1, radius is equal with the cylinder E1 radius of blade (3), downside is a plane, the vertical range of centre of sphere O1 and this underside plan is the half of rotor (2) thickness, the cylinder that cylinder G1 is center is centre of sphere O1, radius is equal with the cylinder P2 radius of rotor (2), the sphere that sphere F1 is the centre of sphere is O1, radius equals rotor (2) line segment O2M2, plane H1 is parallel with I1, the distance of plane H1 and I1 is the width of sealing strip (4), and the width of sealing strip (4) is equal with the thickness of blade (3); R1 and S1 is two gradients with face D4 in housing (1) for the equal inclined-plane of the gradient of B4; Blade (3) and sealing strip (4) are axial symmetry;
Described rotor is one flat plate in the middle of (2), in the middle of dull and stereotyped, two waist places are two identical director circle platforms, one of them director circle platform bottom surface is face B2, the cloudy face of cylinder P2 of to be center be upper bottom surface and dull and stereotyped joint centre of sphere O2, director circle platform cone angle is identical with the cone angle of cloudy round platform H2, A2 with B2 is parallel disk, I2 with J2 is parallel plate level, the cylinder of E2 and F2 to be center be centre of sphere O2, G2 with H2 is two identical cloudy round platform surface, one of them cloudy round platform upper and lower two ends, are disk B2 respectively and take K2L2 as the disc of diameter, the distance of two parallel plane I2 and J2 is the thickness of rotor (2), the length of straigh line of K2M2 is the width of rotor (2), K2 is the intersection point of the orthographic projection of sphere E2 and the orthographic projection of cloudy round platform H2, M2 is the intersection point of the orthographic projection of cylinder E2 and the orthographic projection of cloudy round platform G2, L2 is the intersection point of the orthographic projection of cylinder F2 and the orthographic projection of cloudy round platform H2, whole rotor (2) is not only symmetrical about centre of sphere O2, is also axial symmetry,
Described join oil cone (5) be a round platform, the radius of end face A3 and bottom surface B3 is equal with the radius of upper and lower two bottom surfaces of rotor (2) cloudy round platform respectively, highly also equal with the height of rotor (2) cloudy round platform, two join the locus of oil cone (5) to determine as follows: after guarantee assembles, two join oil cone (5) frustum cone side fits with corresponding planar circular C4 or D4 of the hollow ring of housing (1) respectively, the conical surface of some D3 to E3 is oil extraction face, the conical surface of some D3 to G3 is oil-feed face, and some D3 was the trunnion axis in the center of circle and the intersection point of bottom surface B3; The position of some E3 and some G3 is when rotor (2) forwards to perpendicular to paper position, former and later two intersection points of rotor (2) left side plan and end circle;
Described housing (1) is cylinder, thickness is equal with the width K2M2 of rotor (2), end face A4 and bottom surface B4 are the parallel disks that two radiuses are equal, cylinder F4 is centered by centre of sphere O4, the cylinder that radius is equal with the radius of rotor (2) left and right outside cylinder E2 and F2, the diagonal angle of housing (1) sphere is a hollow ring, and two side C4 with D4 of hollow ring are parallel planar circulars, E4 is the cylinder of central shaft by O4, is positioned on the diagonal of housing (1); Whole housing (1) is symmetrical about centre of sphere O4;
Described centre of sphere O1, centre of sphere O2, centre of sphere O4 all with housing (1) center superposition;
Described cushion block (6) is one section of annulus, its lateral surface A5 is the cylinder that radius is equal with the radius of the cylinder E4 lateral surface of housing (1) hollow ring, medial surface B5 is the sphere that radius equals rotor (2) line segment O2M2, two waist C5 and D5 are the cylinders that radius is equal with the radius of blade (3) bottom surface cylinder E1, and the thickness of cushion block (6) is identical with the thickness of blade (3); Cushion block (6) shape is axial symmetry;
Hydraulic oil inputs from the oil-feed face of the some D3 to G3 joining oil cone (5), and low pressure oil exports from the oil extraction face of the some D3 to E3 joining oil cone (5), and hydraulic motor output torque is to load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110453954.4A CN102536625B (en) | 2011-12-30 | 2011-12-30 | Cylindrical vane hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110453954.4A CN102536625B (en) | 2011-12-30 | 2011-12-30 | Cylindrical vane hydraulic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536625A CN102536625A (en) | 2012-07-04 |
| CN102536625B true CN102536625B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110453954.4A Expired - Fee Related CN102536625B (en) | 2011-12-30 | 2011-12-30 | Cylindrical vane hydraulic motor |
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| CN (1) | CN102536625B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670901B (en) * | 2013-12-16 | 2016-03-30 | 浙江大学 | A kind of Multiple-blade hydraulic motor |
| CN103670896B (en) * | 2013-12-16 | 2016-03-30 | 浙江大学 | A kind of vane type oil motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2043783A (en) * | 1979-01-04 | 1980-10-08 | Jocottet Sa Ets | Rotary Positive-displacement Fluid-machines |
| CN101368565A (en) * | 2008-08-08 | 2009-02-18 | 郑良才 | Cylindrical vane compressor or vacuum pump |
| CN101418793A (en) * | 2008-12-11 | 2009-04-29 | 宁波华液机器制造有限公司 | High performance hydraulic pump |
| CN101418770A (en) * | 2008-12-11 | 2009-04-29 | 宁波华液机器制造有限公司 | High performance hydraulic motor |
| CN101418795A (en) * | 2008-12-11 | 2009-04-29 | 宁波华液机器制造有限公司 | High performance hydraulic pump |
| CN101418771A (en) * | 2008-12-11 | 2009-04-29 | 宁波华液机器制造有限公司 | High performance hydraulic motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050186100A1 (en) * | 2004-02-23 | 2005-08-25 | Paul Weatherbee | Spherical fluid machines |
-
2011
- 2011-12-30 CN CN201110453954.4A patent/CN102536625B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2043783A (en) * | 1979-01-04 | 1980-10-08 | Jocottet Sa Ets | Rotary Positive-displacement Fluid-machines |
| CN101368565A (en) * | 2008-08-08 | 2009-02-18 | 郑良才 | Cylindrical vane compressor or vacuum pump |
| CN101418793A (en) * | 2008-12-11 | 2009-04-29 | 宁波华液机器制造有限公司 | High performance hydraulic pump |
| CN101418770A (en) * | 2008-12-11 | 2009-04-29 | 宁波华液机器制造有限公司 | High performance hydraulic motor |
| CN101418795A (en) * | 2008-12-11 | 2009-04-29 | 宁波华液机器制造有限公司 | High performance hydraulic pump |
| CN101418771A (en) * | 2008-12-11 | 2009-04-29 | 宁波华液机器制造有限公司 | High performance hydraulic motor |
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| CN102536625A (en) | 2012-07-04 |
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