CN102797621B - Crankshaft link hydraulic motor - Google Patents
Crankshaft link hydraulic motor Download PDFInfo
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- CN102797621B CN102797621B CN201210286448.5A CN201210286448A CN102797621B CN 102797621 B CN102797621 B CN 102797621B CN 201210286448 A CN201210286448 A CN 201210286448A CN 102797621 B CN102797621 B CN 102797621B
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- connecting rod
- cylinder sleeve
- oil duct
- ring
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Abstract
The invention relates to a crankshaft link hydraulic motor, which comprises a casing, a close over, a cylinder cover, a straight shaft and an eccentric sleeve, several plunger cylinders are provided in the casing, the crankshaft link hydraulic motor is characterized in that a cylinder sleeve is embedded in the plunger cylinder, the plunger body is positioned in an inner hole of the cylinder sleeve, a first sealing ring is provided between the outer circumferential wall of the cylinder sleeve and the inner hole wall of the plunger cylinder; the center part of the end surface of the cylinder cover has an insert part which downwardly extends and is used for inserting in the inner hole of the cylinder sleeve, a second sealing ring is provided between the outer peripheral face of the insert part and the inner hole wall of the cylinder sleeve, a third sealing ring is provided between the cylinder cover lower end surface which is positioned at the periphery of the insert part and the end surface relative to the casing, a pressure release oil duct which enables axial direction penetration is provided on the sidewall of the cylinder sleeve, and the lower end of the pressure release oil duct is communicated with the casing inner chamber at the lower part of the plunger body. The high-pressure pressurized oil which penetrates the second sealing ring is directly discharged to the inner chamber of the casing at the lower part of the plunger body through the pressure release oil duct, thereby the pressurized oil can not penetrate through the third sealing ring and is discharged outside the casing, and the oil penetration problem of the hydraulic motor can be effectively solved.
Description
Technical field
The present invention relates to a kind of oil hydraulic motor, particularly relate to a kind of crank shaft-connection-lever type hydraulic.
Background technique
Existing crank shaft-connection-lever type hydraulic generally includes housing, the cylinder cap be connected with housing seal and capping, bent axle, logical food tray, oil distribution casing, plunger body, there is in housing multiple plunger case, plunger case is odd number, be evenly distributed on housing radially circumferentially respectively, plunger body in plunger case is connected with the bulb phase ball-joint on connecting rod top, cylndrical surface bottom connecting rod contacts with the eccentric bushing in bent axle, the shaft core position of connecting rod has the oil duct axially run through, d-axis in bent axle is bearing in housing and capping by bearing, in bent axle, one end of d-axis is connected with oil distribution casing by double-end key, the other end of d-axis is then used for being with dynamic load to rotate.During use, when pressure oil by lead to the runner of food tray in oil distribution casing, housing enter into the housing cavity above plunger body time, the action of hydraulic force that pressure oil produces is in plunger body top, this hydraulic coupling resolves into the power pointing to the crank throw center of bent axle along connecting rod center line and the lateral force produced plunger case inwall, the former tangential force produces moment of torsion to the rotating center of bent axle, bent axle is rotated around its rotating center, and realizing hydraulic energy transfer is mechanical energy, reaches the object of output speed and moment of torsion.
A kind of oil hydraulic motor as disclosed in the patent No. Chinese utility model patent " crank shaft-connection-lever type hydraulic " that is ZL200620105572.7 (notification number is CN2924113Y).
Between cylinder cap and housing, the quality of sealing directly affects the quality of oil hydraulic motor, if sealing is bad, the hydraulic oil of high pressure can leak out from the sealing between cylinder cap and housing.
As shown in Figure 7, following sealing structure is adopted between existing cylinder cap 4 ' and plunger case 5 ', cylinder cap 4 ' lower end surface center position has to downward-extension in order to insert the insertion part 41 ' of the plunger case 5 ' endoporus of housing, therefore the profile of cylinder cap is stepped, be provided with the first seal ring 6 ' between the outer circumferential face of insertion part and the inner hole wall of plunger case and form first and seal, the cylinder cap lower end surface being positioned at insertion part periphery is then pasted the multiple screw of merga pass with the opposing end surface of housing and is fixed on housing, between the cylinder cap lower end surface and the opposing end surface of housing of insertion part periphery, be provided with the second seal ring 7 ' and form second and seal.
Because the plunger case inner cavity between plunger body and cylinder cap is divided into hyperbaric chamber, when oil hydraulic motor works, the pressure oil of high pressure enters aforementioned hyperbaric chamber by runner, because the oil pressure of pressure oil is very large, even if there is two seals, the pressure oil of high pressure is also easy to be leaked out from the sealing between cylinder cap and the plunger case of housing; Housing volume ratio is comparatively large in addition, therefore the endoporus of plunger case is inconvenient to carry out extra processing, and roughness and the wear resistance of the inner hole wall of plunger case are poor.
As shown in Figure 7, the both sides of the bottom of existing connecting rod 1 ' link together with eccentric bushing 3 ' by means of only in circular snap ring 2 ' respectively, connect firm degree poor.In addition, existing connecting rod bottom end face is the cambered surface of the indent matched with eccentric bushing profile, the bottom of connecting rod is rectangle under the state of overlooking, when processing the cambered surface of indent bottom connecting rod, special fixture is needed to position workpiece, processing difficulties is inconvenient, in addition because the bottom of connecting rod is rectangle, four corners of connecting rod bottom end face are weaker, oil hydraulic motor in the course of the work, eccentric bushing has wearing and tearing all the time to bottom connecting rod, and it is uneven to wear and tear, connecting rod unbalance stress, cause oil hydraulic motor job insecurity, four corner discontinuity of connecting rod bottom end face in addition, cause connecting rod more fatiguability fracture under the effect of alternating stress, increase maintenance cost.
Summary of the invention
Technical problem to be solved by this invention provides a kind of crank shaft-connection-lever type hydraulic effectively stopping hydraulic oil leakage problems between cylinder cap and housing for above-mentioned prior art present situation.
The present invention solves the problems of the technologies described above adopted technological scheme: a kind of crank shaft-connection-lever type hydraulic, comprise housing, capping, cylinder cap, d-axis and eccentric bushing, described eccentric bushing is fixed on d-axis and forms bent axle, there is in housing multiple circumferentially radial uniform plunger case at eccentric bushing, connecting rod and plunger body is equipped with in each plunger case, the ball head phase ball-joint of plunger body and respective connecting rod, and the bottom end face of each connecting rod contacts with eccentric bushing outer circumferential face, the shaft core position place of connecting rod has the oil duct axially run through; It is characterized in that: be embedded with cylinder sleeve in described plunger case, described plunger body is arranged in the endoporus of cylinder sleeve, is provided with the first seal ring between the periphery wall of cylinder sleeve and plunger case inner hole wall; Described cylinder cap lower end surface center position has to downward-extension in order to insert the insertion part of cylinder sleeve bore, the second seal ring is provided with between the outer circumferential face of insertion part and the inner hole wall of cylinder sleeve, in the cylinder cap lower end surface of insertion part periphery then and between the opposing end surface of housing, be provided with the 3rd seal ring, the sidewall of described cylinder sleeve has the pressure release oil duct axially run through, the lower end of pressure release oil duct is communicated with the housing cavity below plunger body.
The bottom of above-mentioned plunger case inner hole wall has the interior omoplate of ring-type, the periphery of the bottom of described cylinder sleeve has the lower breach of ring-type, described lower breach is shelved on interior omoplate and carries out lower limit to cylinder sleeve, and the upper-end surface of described cylinder sleeve then contacts with the cylinder cap lower end surface being positioned at insertion part periphery and carries out upper limit to cylinder sleeve.It is by a kind of structure of cylinder sleeve axial limiting in plunger case.
Contiguous pressure release oil duct place, above-mentioned cylinder sleeve top has upper breach, and on this, breach is communicated with the top of pressure release oil duct.Arrange breach can quicker by the pressure oil that leaks between the second seal ring and the 3rd seal ring via pressure release oil duct discharged to the housing cavity below plunger body.
Above-mentioned eccentric bushing both sides are arranged with snap ring respectively, this snap ring has and carries out axial limiting and the spacing horizontal wall of radial direction to the bottom of connecting rod, the horizontal wall of described snap ring is compressed on the upper-end surface bottom connecting rod, have locating stud axially across eccentric bushing, the two ends of locating stud are arranged with the back-up ring to described snap ring axial limiting.Connecting rod relative eccentric is overlapped radial spacing by the horizontal wall be set in the snap ring of eccentric bushing both sides, additionally by back-up ring and locating stud by snap ring axial limiting, thus to complete between connecting rod with bent axle firm is connected, guaranteeing that oil hydraulic motor can normally work, is the linkage structure between a kind of brand-new connecting rod and bent axle.
One of them back-up ring in above-mentioned two back-up rings carries out axial limiting by the shoulder block portion of locating stud; Another back-up ring then carries out axial limiting by the jump ring be fastened on locating stud.Certain back-up ring also carries out axial limiting by nut.The setting of back-up ring, not only realizes the location of snap ring, also avoids snap ring in the course of the work to the wearing and tearing of hydraulic motor casing and capping inwall simultaneously, to wear and tear, as long as then change back-up ring afterwards even if existing back-up ring is stressed.
Upper-end surface bottom the horizontal wall of above-mentioned snap ring and connecting rod is respectively inclined-plane, is linear contact lay between the two.Owing to being that inclined-plane coordinates between the two, the active force of such horizontal wall to connecting rod is decomposed into axially and radial two component, axis is carried out to the bottom of connecting rod simultaneously and radial direction spacing, in addition also just with the laminating of the upper-end surface realized bottom horizontal wall and connecting rod.
The bottom of above-mentioned connecting rod is rounded under the state of overlooking, and the bottom end face of connecting rod is the ball-and-socket face of indent, and the outer circumferential face of described eccentric bushing is the spherical surface matched with described ball-and-socket face of evagination.
The bottom of connecting rod is rounded under the state of overlooking, and the bottom end face of connecting rod is the ball-and-socket face of indent, and process ball-and-socket face and do not need special fixture to position reprocessing to connecting rod, only need to adopt fixture on conventional machine tool just can position to it ball-and-socket face that processes, easy to process, cost is low; Can make in addition to form sphere-contact between the bottom end face of connecting rod and eccentric bushing, connecting rod uniform force, indefatigability ruptures, reduce the maintenance cost of oil hydraulic motor, during oil hydraulic motor work, connecting rod also can around the slow rotation of own axes, make the wearing and tearing of connecting rod also even, guarantee that oil hydraulic motor normally works.
The periphery in above-mentioned ball-and-socket face has the copper wearing layer of a circle.To improve wear resistance between ball-and-socket face and eccentric bushing outer circumferential face and seizure resistance.
Due to oil hydraulic motor work time, oil duct bore is larger, behind the pressure oil of the high pressure mating face place quickly through the bottom surface and eccentric bushing that enter connecting rod after oil duct, connecting rod can lift by the pressure oil of high pressure, affects the working efficiency of oil hydraulic motor crankshaft rotating, for above-mentioned present situation, above-mentioned oil duct is designed to shoulder hole by us, the macropore portion internal fixtion of oil duct bottom has fixed block, and fixed block has the damping hole axially run through, this damping hole communicates with the aperture portion on oil duct top.High pressure oil is by damping hole, and high pressure oil can not enter again the bottom surface of connecting rod and the mating face place of eccentric bushing fast after damping hole damping simultaneously, and connecting rod can not be lifted, and guarantees oil hydraulic motor smooth working.
Above-mentioned fixing piece is threaded in the macropore portion of oil duct bottom.Fixed block can conveniently be installed in oil duct by which.
Compared with prior art, the invention has the advantages that: leak through the oil of the high-pressure after the second seal ring can directly via pressure release oil duct discharged to the housing cavity below plunger body, such pressure oil would not leak through the 3rd seal ring and to outside, efficiently solve the oil leakage problem of oil hydraulic motor; Cylinder sleeve is independently parts in addition, plunger body is arranged in the endoporus of cylinder sleeve, conveniently grinding is carried out to the inner hole wall of cylinder sleeve, make the precision improvement of the conicity of inboard wall of cylinder liner, circularity and surface roughness, guarantee plunger body smooth slippage in cylinder sleeve, improve mechanical efficiency, we also can carry out Quenching Treatment to the inner hole wall of cylinder sleeve, to promote hardness and the wear resistance of cylinder sleeve inner hole wall.
Accompanying drawing explanation
Fig. 1 is the sectional view of the embodiment of the present invention;
Fig. 2 is the A place enlarged view of Fig. 1;
Fig. 3 is the sectional view of snap ring in the embodiment of the present invention;
Fig. 4 is the front view of connecting rod in the embodiment of the present invention;
Fig. 5 is the plan view of connecting rod in the embodiment of the present invention;
Fig. 6 is the sectional view of connecting rod in the embodiment of the present invention;
Fig. 7 is the connection diagram between existing connecting rod of hydraulic motor and bent axle.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in figs. 1 to 6, be a preferred embodiment of the present invention.
A kind of crank shaft-connection-lever type hydraulic, comprise housing 1, capping 10, cylinder cap 3, d-axis 4 and eccentric bushing 5, eccentric bushing 5 is fixed on d-axis 4 by keyway arrangements and forms bent axle, capping 10 is connected in the hole of housing 1 sidepiece, be provided with the 4th seal ring 9d between the hole of capping 10 and housing sidepiece to seal, the two ends of d-axis 4 are bearing in housing 1 with capping by bearing 17.There is in housing 1 multiple circumferentially radial uniform plunger case 11 at eccentric bushing 5, connecting rod 6 and plunger body 7 is equipped with in each plunger case 11, the ball head 61 phase ball-joint of plunger body 7 and respective connecting rod, and the bottom end face of each connecting rod 6 contacts with eccentric bushing 5 outer circumferential face, the shaft core position place of connecting rod 6 has the oil duct 62 axially run through.It is more than the conventional structure of crank shaft-connection-lever type hydraulic.
Improvement of the present invention is: be embedded with cylinder sleeve 8 in plunger case 11, plunger body 7 is arranged in the endoporus energy slippage up and down of cylinder sleeve 8, be provided with the 5th seal ring 9e between the outer circumferential face of plunger body 7 and the inner hole wall of cylinder sleeve 8 to seal, the bottom of plunger case 11 inner hole wall has the interior omoplate 13 of ring-type, the periphery of the bottom of cylinder sleeve 8 has the lower breach 82 of ring-type, lower breach 82 is shelved on interior omoplate 13 and carries out lower limit to cylinder sleeve 8, and the upper-end surface of cylinder sleeve 8 then contacts with cylinder cap 3 lower end surface being positioned at insertion part 31 periphery and carries out upper limit to cylinder sleeve 8.
Because cylinder sleeve 8 is independently parts, we conveniently can carry out grinding to the inner hole wall of cylinder sleeve 8, make the precision improvement of the conicity of inboard wall of cylinder liner, circularity and surface roughness, guarantee plunger body smooth slippage in cylinder sleeve, improve mechanical efficiency, we also can carry out Quenching Treatment to the inner hole wall of cylinder sleeve, to promote hardness and the wear resistance of cylinder sleeve inner hole wall.
The first seal ring 9a is provided with between the periphery wall of cylinder sleeve 8 and plunger case 11 inner hole wall; Cylinder cap 3 lower end surface center position has to downward-extension in order to insert the insertion part 31 of cylinder sleeve 8 endoporus, be provided with the second seal ring 9b between the outer circumferential face of insertion part 31 and the inner hole wall of cylinder sleeve 8 to form first and seal, in cylinder cap 3 lower end surface of insertion part 31 periphery then and be provided with the 3rd seal ring 9c between the opposing end surface of housing 1 and form second and seal, the sidewall of cylinder sleeve 8 has the pressure release oil duct 81 axially run through, the lower end of pressure release oil duct 81 is communicated with the housing cavity 12 below plunger body 7.Contiguous pressure release oil duct 81 place, cylinder sleeve 8 top has upper breach 83, and on this, breach 83 is communicated with the top of pressure release oil duct 81.
Leak through the oil of the high-pressure after the second seal ring 9b can directly via pressure release oil duct 81 discharged to the housing cavity 12 below plunger body 7, such pressure oil would not leak through the 3rd seal ring 9c and outside to housing 1, efficiently solves the oil leakage problem of oil hydraulic motor.
As shown in Figure 2,3, eccentric bushing 5 both sides are arranged with snap ring 2 respectively, this snap ring 2 has and carries out axial limiting and the spacing horizontal wall 21 of radial direction to the bottom of connecting rod 6, the horizontal wall 21 of snap ring is compressed on the upper-end surface 63 bottom connecting rod 6, the horizontal wall 21 of snap ring is respectively inclined-plane with the upper-end surface 63 bottom connecting rod 6, is linear contact lay between the two.
Have locating stud 13 axially across eccentric bushing 5, the two ends of locating stud 13 are arranged with the back-up ring 14 to snap ring 2 axial limiting.The back-up ring 14 in left side carries out axial limiting by the shoulder block portion 131 of locating stud; Right side back-up ring 14 carries out axial limiting by the jump ring 15 be fastened on locating stud 13.
Connecting rod 6 relative eccentric is overlapped radial spacing by the horizontal wall 21 be set in the snap ring of eccentric bushing 5 both sides, additionally by back-up ring 14 and locating stud 13 by snap ring 2 axial limiting, thus complete connecting rod 6 and be connected with firm between bent axle, guaranteeing that oil hydraulic motor can normally work, is a kind of brand-new linkage structure.
As shown in figures 4-6, the bottom of connecting rod 6 is rounded under the state of overlooking, and the bottom end face of connecting rod 6 is the ball-and-socket face 64 of indent, and the periphery in ball-and-socket face 64 has the copper wearing layer 65 of a circle, and the outer circumferential face of eccentric bushing 5 is the spherical surface 51 matched with ball-and-socket face 64 of evagination.The bottom of connecting rod 6 is rounded under the state of overlooking, and the bottom end face of connecting rod 6 is the ball-and-socket face 64 of indent, and process ball-and-socket face 64 and do not need special fixture to position reprocessing to connecting rod, only need to adopt fixture on conventional machine tool just can position it and process ball-and-socket face, easy to process, cost is low; Can make in addition to form sphere-contact between the bottom end face of connecting rod 6 and eccentric bushing 5, connecting rod 6 uniform force, indefatigability ruptures, reduce the maintenance cost of oil hydraulic motor, during oil hydraulic motor work, connecting rod 6 also around the slow rotation of own axes, can make the wearing and tearing of connecting rod 6 also even, guarantees that oil hydraulic motor normally works.
Oil duct 62 is shoulder hole, the macropore portion internal fixtion of oil duct 62 bottom has fixed block 16, fixed block 16 is threaded in the macropore portion of oil duct 62 bottom, and fixed block 16 has the damping hole 161 axially run through, this damping hole 161 communicates with the aperture portion on oil duct 62 top.
Claims (10)
1. a crank shaft-connection-lever type hydraulic, comprise housing (1), capping (10), cylinder cap (3), d-axis (4) and eccentric bushing (5), described eccentric bushing (5) is fixed on d-axis (4) and above forms bent axle, there is in housing (1) multiple circumferentially radial uniform plunger case (11) at eccentric bushing (5), connecting rod (6) and plunger body (7) is equipped with in each plunger case (11), ball head (61) the phase ball-joint of plunger body (7) and respective connecting rod, and the bottom end face of each connecting rod (6) contacts with eccentric bushing (5) outer circumferential face, the shaft core position place of connecting rod (6) has the oil duct (62) axially run through, it is characterized in that: in described plunger case (11), be embedded with cylinder sleeve (8), described plunger body (7) is arranged in the endoporus of cylinder sleeve (8), is provided with the first seal ring (9a) between the periphery wall of cylinder sleeve (8) and plunger case (11) inner hole wall, described cylinder cap (3) lower end surface center position has to downward-extension in order to insert the insertion part (31) of cylinder sleeve (8) endoporus, the second seal ring (9b) is provided with between the outer circumferential face of insertion part (31) and the inner hole wall of cylinder sleeve (8), cylinder cap (3) lower end surface being positioned at insertion part (31) periphery then and be provided with the 3rd seal ring (9c) between the opposing end surface of housing (1), the sidewall of described cylinder sleeve (8) has the pressure release oil duct (81) axially run through, the lower end of pressure release oil duct (81) is communicated with the housing cavity (12) of plunger body (7) below.
2. crank shaft-connection-lever type hydraulic according to claim 1, it is characterized in that: the bottom of described plunger case (11) inner hole wall has the interior omoplate (13) of ring-type, the periphery of the bottom of described cylinder sleeve (8) has the lower breach (82) of ring-type, described lower breach (82) is shelved on interior omoplate (13) and above carries out lower limit to cylinder sleeve (8), and the upper-end surface of described cylinder sleeve (8) then contacts with cylinder cap (3) lower end surface being positioned at insertion part (31) periphery and carries out upper limit to cylinder sleeve (8).
3. crank shaft-connection-lever type hydraulic according to claim 2, it is characterized in that: contiguous pressure release oil duct (81) place, described cylinder sleeve (8) top has upper breach (83), and on this, breach (83) is communicated with the top of pressure release oil duct (81).
4. according to claim 1, crank shaft-connection-lever type hydraulic described in 2 or 3, it is characterized in that: described eccentric bushing (5) both sides are arranged with snap ring (2) respectively, this snap ring (2) has and carries out axial limiting and the spacing horizontal wall (21) of radial direction to the bottom of connecting rod (6), the horizontal wall (21) of described snap ring is compressed on the upper-end surface (63) of connecting rod (6) bottom, there is locating stud (13) axially across eccentric bushing (5), the two ends of locating stud (13) are arranged with the back-up ring (14) to described snap ring (2) axial limiting.
5. crank shaft-connection-lever type hydraulic according to claim 4, is characterized in that: one of them back-up ring (14) in described two back-up rings carries out axial limiting by the shoulder block portion (131) of locating stud; Another back-up ring (14) then carries out axial limiting by the jump ring (15) be fastened on locating stud (13).
6. the linkage structure in oil hydraulic motor according to claim 4 between connecting rod and bent axle, it is characterized in that: the horizontal wall (21) of described snap ring is respectively inclined-plane with the upper-end surface (63) of connecting rod (6) bottom, is linear contact lay between the two.
7. the linkage structure in oil hydraulic motor according to claim 4 between connecting rod and bent axle, it is characterized in that: the bottom of described connecting rod (6) is rounded under the state of overlooking, the bottom end face of connecting rod (6) is the ball-and-socket face (64) of indent, and the outer circumferential face of described eccentric bushing (5) is the spherical surface (51) matched with described ball-and-socket face (64) of evagination.
8. the linkage structure in oil hydraulic motor according to claim 7 between connecting rod and bent axle, is characterized in that: the periphery of described ball-and-socket face (64) has the copper wearing layer of a circle (65).
9. the linkage structure in oil hydraulic motor according to claim 7 between connecting rod and bent axle, it is characterized in that: described oil duct (62) is shoulder hole, the macropore portion internal fixtion of oil duct (62) bottom has fixed block (16), fixed block (16) has the damping hole (161) axially run through, this damping hole (161) communicates with the aperture portion on oil duct (62) top.
10. the linkage structure in oil hydraulic motor according to claim 9 between connecting rod and bent axle, is characterized in that: described fixed block (16) is threaded in the macropore portion of oil duct (62) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286448.5A CN102797621B (en) | 2012-08-13 | 2012-08-13 | Crankshaft link hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286448.5A CN102797621B (en) | 2012-08-13 | 2012-08-13 | Crankshaft link hydraulic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102797621A CN102797621A (en) | 2012-11-28 |
| CN102797621B true CN102797621B (en) | 2015-05-27 |
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ID=47196875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210286448.5A Expired - Fee Related CN102797621B (en) | 2012-08-13 | 2012-08-13 | Crankshaft link hydraulic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102797621B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822493A (en) * | 2016-03-18 | 2016-08-03 | 宁波新宏液压有限公司 | Oscillating cylinder type hydraulic motor |
| CN107116126A (en) * | 2017-06-23 | 2017-09-01 | 上汽大众汽车有限公司 | A kind of guider |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU935644A1 (en) * | 1975-03-20 | 1982-06-15 | Khabarov Aleksandr V | Radial-piston eccentric hydraulic motor |
| CN202832956U (en) * | 2012-08-13 | 2013-03-27 | 台州帕克兰液压机械有限公司 | Crankshaft connecting rod type hydraulic motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4845597Y1 (en) * | 1970-12-26 | 1973-12-27 | ||
| JPH10103309A (en) * | 1996-09-25 | 1998-04-21 | Nec Yamagata Ltd | Cylinder |
| CN2299181Y (en) * | 1997-03-10 | 1998-12-02 | 胡世璇 | Crankshaft link hydraulic motor |
| CN2924113Y (en) * | 2006-07-12 | 2007-07-18 | 宁波欧易液压有限公司 | Crank shaft-connection-lever type hydraulic motor |
| CN2924112Y (en) * | 2006-07-12 | 2007-07-18 | 宁波欧易液压有限公司 | Novel crankshaft-connection-rod type hydraulic motor |
| CN102108987A (en) * | 2011-03-30 | 2011-06-29 | 苏州东南碳制品有限公司 | Oil cylinder |
-
2012
- 2012-08-13 CN CN201210286448.5A patent/CN102797621B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU935644A1 (en) * | 1975-03-20 | 1982-06-15 | Khabarov Aleksandr V | Radial-piston eccentric hydraulic motor |
| CN202832956U (en) * | 2012-08-13 | 2013-03-27 | 台州帕克兰液压机械有限公司 | Crankshaft connecting rod type hydraulic motor |
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| CN102797621A (en) | 2012-11-28 |
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Address after: 317000 Harbor Industrial Zone, Linhai two water industrial zone, Zhejiang Applicant after: NINGBO PKL HYDRAULIC MACHINERY Co.,Ltd. Address before: 317000 Harbor Industrial Zone, Linhai two water industrial zone, Zhejiang Applicant before: Taizhou PKL Hydraulic Machinery Co.,Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: TAIZHOU PKL HYDRAULIC MACHINERY CO., LTD. TO: NINGBO PKL HYDRAULIC MACHINERY CO., LTD. |
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Address after: Jiaochuan Zhenhai District 315200 in Zhejiang province Ningbo City Street Green Road No. 268 Applicant after: NINGBO PKL HYDRAULIC MACHINERY Co.,Ltd. Address before: 317000 Harbor Industrial Zone, Linhai two water industrial zone, Zhejiang Applicant before: NINGBO PKL HYDRAULIC MACHINERY Co.,Ltd. |
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