CN102042473B - Bidirectional lubricating pump - Google Patents
Bidirectional lubricating pump Download PDFInfo
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- CN102042473B CN102042473B CN201110003024.9A CN201110003024A CN102042473B CN 102042473 B CN102042473 B CN 102042473B CN 201110003024 A CN201110003024 A CN 201110003024A CN 102042473 B CN102042473 B CN 102042473B
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Abstract
The invention provides a bidirectional lubricating pump, which belongs to the technical field of machinery and is used for solving the problems of complex structure, high production and manufacturing cost and small application area of the traditional bidirectional lubricating pump. The bidirectional lubricating pump comprises a pump body with an oil inlet and an oil outlet; a reversing bottom plate with an oil inlet channel communicated with the oil inlet and an oil outlet channel communicated with the oil outlet is fixed in the pump body; two circular arc-shaped reversing grooves which are axisymmetrically distributed are arranged on the reversing bottom plate; an oil sucking and pressing mechanism capable of conveying a medium in the oil inlet channel to one end toward the other end of a reversing channel is arranged between the reversing bottom plate and the pump body; and a communication reversing mechanism capable of always communicating the oil outlet channel with the other end of the reversing groove conveying the medium is arranged in the reversing bottom plate. The bidirectional lubricating pump has the advantages of compact structure, small overall size, light weight, relatively large oil suction vacuum degree, large oil pumping quantity, high oil supply uniformity, low production cost and stable performance.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of pump, particularly a kind of Bidirectional lubricating pump.
Background technique
Oil pump is one of parts important in lubrication system, and it can be divided into Injection Pump, self-suction oil pump, oil-immersed pump and oil pump by type.Wherein, oil pump is to force machine oil from oil sump, to deliver to a kind of device of engine movement part.Oil pump can be divided into gear type and rotor-type oil pump again.Rotor-type oil pump is comprised of housing, internal rotor, external rotor and pump cover etc.Internal rotor is fixed on rotor shaft, and the throw of eccentric at internal rotor and external rotor center is e, and internal rotor drives external rotor to rotate in the same direction together.In general, internal rotor has 4 double wedges, and external rotor has 5 recessed teeth, the nonsynchronous in the same way rotation of inner and outer Rotator like this.When rotor tooth form tooth Profile Design must make rotor forward any angle to, on the profile of tooth profile of each tooth of inner and outer Rotator, total energy becomes mutually some contact.Between inner and outer Rotator, form like this 4 active chambers, along with the rotation of rotor, the volume of these 4 active chambers is constantly to change.A side cavity at oil input channel, because rotor is thrown off engagement, volume increases gradually, produces vacuum, machine oil is inhaled into, rotor continues rotation, and machine oil is brought to a side of oil road, at this moment, rotor just in time enters engagement, this cavity volume is reduced, and oil pressure raises, and machine oil is extruded and goes out through oil road force feed between cog.Like this, along with the continuous rotation of rotor, machine oil is just constantly inhaled into and extrudes.But at present all rotor-type oil pumps can only unidirectional fuel feeding, and then cause this oil pump cannot have shortly forward to have again in the device of reversion applying, for example, cannot in the retarder of hoist machine, apply.
In order to realize Bidirectional lubricating, because people have once proposed different design proposals.For example, the disclosed a kind of Bidirectional plunger lubricating pump [China Patent No.: ZL91209915 of Chinese patent literature; Notice of authorization number: CN2099854U].Although this lubricant pump can bidirectional movement, but exists complex structure, manufacturing cost is high and application is little, cannot meet the problems such as armamentarium demand.
Summary of the invention
The object of the invention is to have the problems referred to above for existing technology, proposed a kind of Bidirectional lubricating pump of realizing Bidirectional lubricating function in the situation that not changing oil inlet hole and oil outlet.
Object of the present invention can realize by following technical proposal: a kind of Bidirectional lubricating pump, comprise the pump housing with oil inlet hole and oil outlet, it is characterized in that, in the described pump housing, be fixed with the oil inlet passage being connected with oil inlet hole and the commutation base plate of the oil discharge passage being connected with oil outlet, on described commutation base plate, have two reversing grooves that distribute axisymmetricly and be circular shape, between described commutation base plate and the pump housing, be provided with the suction force feed mechanism that the medium transport at oil inlet passage place can be carried to one of them reversing groove one place, Qie Xiang the other end, end, in described commutation base plate, be provided with the connection changement that can make all the time oil discharge passage be connected with the reversing groove the other end that is conveyed into medium.
During this Bidirectional lubricating pump work, suction force feed mechanism is wherein connected with driving mechanisms such as motor or bent axles, and oil inlet hole is connected with oil storage tank.When driving work Hou Xi force feed mechanism of suction force feed mechanism the grease of oil storage tank can be drawn to oil inlet passage place and this grease is delivered to one of them reversing groove one place, Qie Xiang the other end, end, carries driving mechanism; And then this reversing groove chamber pressure is promoted and higher than another reversing groove chamber pressure; Now be communicated with changement reversing groove the other end that pressure is higher is connected with oil discharge passage and make reversing groove the other end that pressure is lower and oil discharge passage between be cut off.And grease is transported in another above-mentioned reversing groove after driving mechanism rotates backward and drive the work of suction force feed mechanism; Being communicated with changement makes another above-mentioned reversing groove the other end be connected with oil discharge passage and makes to be cut off between this above-mentioned reversing groove the other end and oil discharge passage.
In above-mentioned Bidirectional lubricating pump, described suction force feed mechanism comprises being positioned at commutates plate outer side and is fixed on the pump cover on the pump housing, in described pump cover, there is positioning chamber, in described positioning chamber, be provided with internal rotor and external rotor, the axle core that described internal rotor is positioned at external rotor and external rotor departs from the axle core of internal rotor; One end face of described internal rotor and external rotor all leans with commutation plate outer side face, and the other end of internal rotor and external rotor all leans with the bottom surface of positioning chamber; On described pump cover, be equipped with one with circumferentially fixing rotating shaft of internal rotor.
In above-mentioned Bidirectional lubricating pump, described connection changement comprises the communication passage that is positioned at commutation base plate and the fuse that is arranged on communication passage; The even communication passage of the other end of reversing groove described in two and oil discharge passage is connected, and described fuse can automatically axially move and another reversing groove is connected with oil discharge passage by communication passage to a low reversing groove direction of chamber pressure along communication passage inwall.
In above-mentioned Bidirectional lubricating pump, described fuse comprises one and the body that leans of communication passage side and correspondingly in body both sides and can make the body distance bar portion between two connecting ports in reversing groove and communication passage all the time.
In above-mentioned Bidirectional lubricating pump, on the outer wall of described internal rotor, at least there are four outer teeth, on described external rotor inwall, there is and the interior teeth of internal rotor to engagement many one of the number of teeth of the gear ratio internal rotor of described external rotor; The tooth root of described outer teeth is relative with tooth root engagement place and the oil discharge passage of interior teeth; The crown of described outer teeth is relative with crown engagement place and the oil inlet passage of interior teeth.
In above-mentioned Bidirectional lubricating pump, two that between the reversing groove described in two and internal rotor and external rotor, form are held oil pockets and are connected one to one.
In above-mentioned Bidirectional lubricating pump, described commutation base plate is rounded, described commutation base plate and pump housing tight fit connection; Reversing groove described in described two is symmetrical along commutation base plate radial line.
In above-mentioned Bidirectional lubricating pump, the cross sectional area of described reversing groove successively decreases to the other end gradually from the one end near oil inlet passage.
In above-mentioned Bidirectional lubricating pump, described pump cover is bolted on the pump housing.
In above-mentioned Bidirectional lubricating pump, the inner of described rotating shaft penetrates in commutation base plate; The outer end of rotating shaft is connecting end; Described rotating shaft outer end has annular convex shoulder, and described rotating shaft outer end is arranged with positioning cap, and described positioning cap is threaded connection on pump cover; One end face of annular convex shoulder and the exterior edge face of pump cover lean; Other end and positioning cap lean.
Compared with prior art, this Bidirectional lubricating pump Zhong Xi force feed mechanism adopts rotor structure, is communicated with changement and is positioned at commutation base plate and can realizes automatic reverse, so this lubricant pump has compact structure, boundary dimension is little, lightweight, oil suction degree of vacuum is larger, and pump oil mass is large, fuel feeding good uniformity, cost of production is low, easy to use, the advantage of stable performance.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of this Bidirectional lubricating pump.
Fig. 2 is the sectional structure schematic diagram of A-A in Fig. 1.
Fig. 3 is the sectional structure schematic diagram of B-B in Fig. 1.
In figure, 1, the pump housing; 1a, oil inlet hole; 1b, oil outlet; 1c, mounting groove; 2, commutation base plate; 21, oil inlet passage; 22, oil discharge passage; 23, reversing groove; 24, communication passage; 25, axis hole; 3, internal rotor; 31, outer teeth; 4, external rotor; 41, interior teeth; 5, pump cover; 6, rotating shaft; 61, annular convex shoulder; 62, connecting groove; 7, positioning cap; 8, bolt; 9, fuse; 91, body; 92, distance bar portion; 10, hold oil pocket.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1 to Figure 3, this Bidirectional lubricating pump comprises the pump housing 1, commutation base plate 2, pump cover 5, rotating shaft 6, internal rotor 3 and external rotor 4.
Specifically, on the pump housing 1, there is cylindrical mounting groove 1c.Commutation base plate 2 rounded and its be positioned at the mounting groove 1c of the pump housing 1, commutation base plate 2 an end face be resisted against on the bottom surface of mounting groove 1c; Between commutation base plate 2 and the pump housing 1, be drive fit, the base plate 2 that commutates is thus fixed on the pump housing 1.
The outer edge of commutation base plate 2 has an oil inlet passage 21 and an oil discharge passage 22, the setting that is centrosymmetric of the position of the position of oil inlet passage 21 and oil discharge passage 22.On the pump housing 1, there is the oil inlet hole 1a being connected with oil inlet passage 21 and the oil outlet 1b being connected with oil discharge passage 22.
The middle part of commutation base plate 2 has two two and is the reversing groove 23 that equal circular shape axially connects, the center superposition of reversing groove 23 center and commutation base plate 2.The position of two reversing grooves 23 and structure are all along arranging through oil inlet passage 21 and the radial line Central Symmetry of oil discharge passage 22, and oil inlet passage 21 and oil discharge passage 22 are all between two reversing grooves 23 simultaneously.The cross sectional area of reversing groove 23 successively decreases to the other end gradually from the one end near oil inlet passage 21.
On the sidewall of commutation base plate 2, have an axle center perpendicular to the communication passage 24 with oil discharge passage 22 radial lines and perforation through oil inlet passage 21.Communication passage 24 is through the other end of reversing groove 23 and the inner end of oil discharge passage 22, and then the other end of reversing groove 23 is connected with communication passage 24 be connected with communication passage 24 with oil discharge passage 22.In communication passage 24, be provided with an energy and along communication passage 24 sides, move and communication passage 24 is divided into the fuse 9 of two autonomous channels.Fuse 9 comprises a body 91 leaning with communication passage 24 sides and is positioned at correspondingly body 91 both sides distance bar portions 92.When fuse 9 moves along communication passage 24 sides, the end face of distance bar portion 92 can lean with the side of mounting groove 1c, two distance bar portions 92 equal in length and can this distance bar portion 92 make body 91 in moving process all the time between two connecting ports of reversing groove 23 and communication passage 24.This structure avoids fuse 9 bodies 91 to cause two reversing grooves 23 to be connected with oil discharge passage 22 the connecting port shutoff of reversing groove 23 and communication passage 24 and body 91 1 side shifting stroke transition simultaneously, and then guarantees that when pressure difference appears in two reversing groove 23 inner chambers medium can promote fuse 9 and move to a low reversing groove 23 of chamber pressure.
Rounded tabular and its outer edge of internal rotor 3 has 7 outer teeth 31.One end face of internal rotor 3 leans and the axle center of internal rotor 3 and the axis coinciding of commutation base plate 2 with the exterior edge face of commutation base plate 2.
External rotor 4 is ring thickness tabular and external rotor 4 and equates with the thickness of internal rotor 3.External rotor 4 is set in the outside of internal rotor 3, and an end face of external rotor 4 also leans with the exterior edge face of commutation base plate 2; The axle core of the axis deviation internal rotor 3 of external rotor 4.On the inner side surface of external rotor 4, there are 8 interior teeth 41, then the tooth root of 4 one interior teeth 41 of the tooth root of 3 one outer teeth 31 of internal rotor and external rotor is meshed and the crown of 4 one interior teeth 41 of crown and external rotor of 3 one outer teeth 31 of internal rotor is meshed and the outer wall of internal rotor 3 and the inwall of external rotor 4 between form two and hold oil pockets 10.Obviously, two appearance oil pockets 10 are that the radial line through outer teeth 31 tooth roots and interior teeth 41 tooth root engagement places and outer teeth 31 crowns and interior teeth 41 crown engagement places is symmetrical arranged along internal rotor 3.The crown of outer teeth 31 is relative with oil inlet passage 21 with the crown engagement place of interior teeth 41; The tooth root of outer teeth 31 is relative with oil inlet passage 21 with the tooth root engagement place of interior teeth 41; Two are held oil pocket 10 and two reversing grooves 23 corresponding setting and appearance oil pocket 10 are connected with corresponding reversing groove 23 one by one.At the actual production China and foreign countries quantity of teeth 31 and the quantity of interior teeth 41 above-mentioned disclosed numerical value not only, but many one and to realize said structure just passable of the number of teeth of the gear ratio internal rotor 3 of external rotor 4.
On the interior edge face of pump cover 5, have one with the equal positioning chamber one to one in external rotor 4 profiles and position.Pump cover 5 is set on external rotor 4, and the other end that makes external rotor 4 and internal rotor 3 all be positioned at pump cover 5 and external rotor 4 and internal rotor 3 all leans with the bottom surface of positioning chamber.On the side of the pump housing 1 mounting groove 1c, have annular recessed shoulder, pump cover 5 is fixedly connected on the pump housing 1 by two bolts 8.The interior edge face of pump cover 5 is resisted against on the bottom surface of annular recessed shoulder and forms sealing between the two, avoids grease to leak.
Rotating shaft 6 is located on pump cover 5 and the axle core of rotating shaft 6 and the axle core of internal rotor 3 overlap.The center of commutation base plate 2 also has an axis hole 25.The inner of rotating shaft 6 is passed internal rotor 3 and is penetrated the axis hole 25 of commutation base plate 2; Rotating shaft 6 is circumferentially fixing with internal rotor 3; The outer end of rotating shaft 6 is on connecting end and exterior edge face, to have connecting groove 62.Rotating shaft 6 outer ends have annular convex shoulder 61, and rotating shaft 6 outer ends are arranged with positioning cap 7, and positioning cap 7 is threaded connection on pump cover; One end face of annular convex shoulder 61 and the exterior edge face of pump cover lean; Other end and positioning cap 7 lean.So rotating shaft 6 is axially fixed on pump cover 5; And can take out rotating shaft 6 after positioning cap 7 dismountings are lower.
When this Bidirectional lubricating pump is used in tractor redactor, the pump housing 1 is fixed on reduction case; The connecting end of rotating shaft 6 is connected with transmission shaft; Oil inlet hole 1a is connected with oil storage tank, and oil outlet 1b extends to lubricated place.When the electric machine main shaft of hoist machine drives reducer input shaft to rotate, transmission shaft drives rotating shaft 6, internal rotor 3 and external rotor 4 to rotate successively; And then by holding oil pocket 10, the lubricant oil at oil inlet passage 21 places is delivered in one of them reversing groove 23, the direction that the large end of this reversing groove 23 extends to small end is identical with sense of rotation, so cause these reversing groove 23 chamber pressures will be greater than another reversing groove 23 chamber pressures, fuse 9 moves until the side of the end face of distance bar portion 92 and mounting groove 1c leans to another reversing groove 23 directions under above-mentioned pressure-acting; This reversing groove 23 is connected with oil discharge passage 22 by communication passage 24; Grease in mounting groove 1c arrives lubricated place by communication passage 24, oil discharge passage 22, oil outlet 1b successively under above-mentioned pressure-acting.Simultaneously appearance oil pocket 10 ends relative with feed pathway have vacuum trend all the time, and the pressure of feed pathway is lower than the pressure of oil inlet hole 1a inlet, and then grease is entered and held oil pocket 10 by oil inlet hole 1a and feed pathway successively.By the orderly drive rotating shaft 6 of transmission shaft, rotate and then realize oil suction in an orderly manner and force feed thus.
When driven by motor input shaft reverses, transmission shaft is also with driven input shaft reversion, so the grease at feed pathway place is delivered in another above-mentioned reversing groove 23 and its chamber pressure will be greater than these above-mentioned reversing groove 23 chamber pressures, fuse 9 also oppositely moves thus.All the other actions are moved during with rotating shaft 6 forward identical, in this no longer burden description.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used the pump housing 1 herein; Oil inlet hole 1a; Oil outlet 1b; Mounting groove 1c; Commutation base plate 2; Oil inlet passage 21; Oil discharge passage 22; Reversing groove 23; Communication passage 24; Axis hole 25; Internal rotor 3; Outer teeth 31; External rotor 4; Interior teeth 41; Pump cover 5; Rotating shaft 6; Connecting groove 62; Annular convex shoulder 61; Positioning cap 7; Bolt 8; Fuse 9; Body 91; Distance bar portion 92; Hold oil pocket 10 terms such as grade, but do not get rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (9)
1. a Bidirectional lubricating pump, the pump housing (1) that comprises there is oil inlet hole (1a) and oil outlet (1b), it is characterized in that, in the described pump housing (1), be fixed with commutation base plate (2), described commutation base plate (2) has the oil inlet passage (21) being connected with oil inlet hole (1a) and the oil discharge passage (22) being connected with oil outlet (1b), on described commutation base plate (2), have two reversing grooves that distribute axisymmetricly and be circular shape (23), between described commutation base plate (2) and the pump housing (1), be provided with the suction force feed mechanism that medium transport to reversing groove (23) one place, Qie Xiang the other end, the end conveyings that oil inlet passage (21) can be located or the medium transport that oil inlet passage (21) is located are carried to another reversing groove (23) one places, Qie Xiang the other end, end, in described commutation base plate (2), be provided with the connection changement that can make all the time oil discharge passage (22) be connected with reversing groove (23) the other end that is conveyed into medium, described connection changement comprises the communication passage (24) that is positioned at commutation base plate (2) and the fuse (9) that is arranged on communication passage (24), communication passage (24) is through the other end of reversing groove (23) and the inner end of oil discharge passage (22), the other end of reversing groove described in two (23) and oil discharge passage (22) are all connected with communication passage (24), and described fuse (9) can automatically axially move and another reversing groove (23) is connected with oil discharge passage (22) by communication passage (24) to a low reversing groove (23) direction of chamber pressure along communication passage (24) inwall.
2. Bidirectional lubricating pump according to claim 1, it is characterized in that, described fuse (9) comprises one and the body (91) that leans of communication passage (24) side and be positioned at correspondingly body (91) both sides and can make body (91) be positioned at all the time the distance bar portion (92) between reversing groove (23) and two connecting ports of communication passage (24).
3. Bidirectional lubricating pump according to claim 1, it is characterized in that, described suction force feed mechanism comprises being positioned at commutates base plate (2) outside and is fixed on the pump cover (5) on the pump housing (1), described pump cover has positioning chamber in (5), in described positioning chamber, be provided with internal rotor (3) and external rotor (4), the axle core that described internal rotor (3) is positioned at external rotor (4) and external rotor (4) departs from the axle core of internal rotor (3); One end face of described internal rotor (3) and external rotor (4) all leans with commutation base plate (2) outer side surface, and the other end of internal rotor (3) and external rotor (4) all leans with the bottom surface of positioning chamber; On described pump cover (5), be equipped with one with circumferentially fixing rotating shaft (6) of internal rotor (3).
4. Bidirectional lubricating pump according to claim 3, it is characterized in that, on the outer wall of described internal rotor (3), at least there are four outer teeth (31), on described external rotor (4) inwall, there is and the interior teeth (41) of internal rotor (3) to engagement many one of the number of teeth of the gear ratio internal rotor (3) of described external rotor (4); The tooth root of described outer teeth (31) is relative with oil discharge passage (22) with the tooth root engagement place of interior teeth (41); The crown of described outer teeth (31) is relative with oil inlet passage (21) with the crown engagement place of interior teeth (41).
5. according to the Bidirectional lubricating pump described in claim 3 or 4, it is characterized in that, two that between the reversing groove described in two (23) and internal rotor (3) and external rotor (4), form are held oil pockets (10) and are connected one to one.
6. according to the Bidirectional lubricating pump described in any one in claim 1 to 4, it is characterized in that, described commutation base plate (2) is rounded, described commutation base plate (2) and the pump housing (1) tight fit connection; Reversing groove described in two (23) is symmetrical along commutation base plate (2) radial line.
7. according to the Bidirectional lubricating pump described in any one in claim 1 to 4, it is characterized in that, the cross sectional area of described reversing groove (23) successively decreases to the other end gradually from the one end near oil inlet passage (21).
8. according to the Bidirectional lubricating pump described in claim 3 or 4, it is characterized in that, described pump cover (5) is fixed on the pump housing (1) by bolt (8).
9. according to the Bidirectional lubricating pump described in claim 3 or 4, it is characterized in that, the inner of described rotating shaft (6) penetrates in commutation base plate (2); The outer end of rotating shaft (6) is connecting end; Described rotating shaft (6) outer end has annular convex shoulder (61), and described rotating shaft (6) outer end is arranged with positioning cap (7), and described positioning cap (7) is threaded connection on pump cover (5); The exterior edge face of one end face of annular convex shoulder (61) and pump cover (5) leans; The other end of annular convex shoulder (61) and positioning cap (7) lean.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110003024.9A CN102042473B (en) | 2011-01-07 | 2011-01-07 | Bidirectional lubricating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110003024.9A CN102042473B (en) | 2011-01-07 | 2011-01-07 | Bidirectional lubricating pump |
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| Publication Number | Publication Date |
|---|---|
| CN102042473A CN102042473A (en) | 2011-05-04 |
| CN102042473B true CN102042473B (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110003024.9A Expired - Fee Related CN102042473B (en) | 2011-01-07 | 2011-01-07 | Bidirectional lubricating pump |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110975503B (en) * | 2019-12-31 | 2021-11-23 | 巫溪县绿荫环保有限公司 | Double-channel paint mist purifying equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1854524A (en) * | 2005-04-29 | 2006-11-01 | 上海发电设备成套设计研究所 | Method and device for supplying oil of decelerator corotation or reversed rotation |
| CN101159397A (en) * | 2006-10-04 | 2008-04-09 | 丰田自动车株式会社 | Wheel assembly with in-wheel motor |
| CN201159169Y (en) * | 2008-02-04 | 2008-12-03 | 浙江大元泵业有限公司 | Fixed flow direction cycloid rotor lubricating pump |
| CN201964128U (en) * | 2011-01-07 | 2011-09-07 | 台州长城机械制造有限公司 | Two-way lubrication pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070092392A1 (en) * | 2005-10-20 | 2007-04-26 | Aisin Seiki Kabushiki Kaisha | Internal gear pump |
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2011
- 2011-01-07 CN CN201110003024.9A patent/CN102042473B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1854524A (en) * | 2005-04-29 | 2006-11-01 | 上海发电设备成套设计研究所 | Method and device for supplying oil of decelerator corotation or reversed rotation |
| CN101159397A (en) * | 2006-10-04 | 2008-04-09 | 丰田自动车株式会社 | Wheel assembly with in-wheel motor |
| CN201159169Y (en) * | 2008-02-04 | 2008-12-03 | 浙江大元泵业有限公司 | Fixed flow direction cycloid rotor lubricating pump |
| CN201964128U (en) * | 2011-01-07 | 2011-09-07 | 台州长城机械制造有限公司 | Two-way lubrication pump |
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| CN102042473A (en) | 2011-05-04 |
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