CN105697970A - Gear-type variable pump - Google Patents
Gear-type variable pump Download PDFInfo
- Publication number
- CN105697970A CN105697970A CN201610216685.2A CN201610216685A CN105697970A CN 105697970 A CN105697970 A CN 105697970A CN 201610216685 A CN201610216685 A CN 201610216685A CN 105697970 A CN105697970 A CN 105697970A
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- gear
- compensating groove
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- driven gear
- driving gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a gear-type variable pump. The gear-type variable pump comprises a housing as well as a driving gear and a driven gear which are arranged in the inner cavity of the housing; a columnar sliding block which is coaxially connected with the driven gear and can axially move with the driven gear is also arranged in the inner cavity of the housing; an unloading groove which axially extends along the columnar sliding block is formed in the columnar sliding block; and one end of the unloading groove extends to the end surface of the driven gear, and can be communicated with a tapped oil cavity. By adoption of the gear-type variable pump, the unloading groove can be communicated with the tapped oil cavity when the driven gear axially moves, so as to reduce the pressure pulsation of the tapped oil cavity as well as the phenomena of cavitation erosion and cavitation in the tapped oil cavity.
Description
Technical field
The present invention relates to a kind of gear type variable rate pump, particularly to a kind of gear type variable rate pump as engine oil pump。
Background technology
In recent years, the problem such as environmental pollution and energy scarcity is increasingly severe, and auto industry is the important sources of energy resource consumption and environmental pollution。Automobile can pass through to improve the method and measures such as the combination property of electromotor, body lightening, Brake energy recovery, reaches the purpose of energy-saving and emission-reduction。Become displacement oil pump use on automobile, it is also possible to reach the purpose of automotive energy-saving emission-reducing。Lubricating oil pump is the important composition parts of vehicle lubricating system, its function is after machine oil is increased to certain pressure, it is transported to the component surface that respectively rubs of automobile engine again, by providing lubricating oil to reduce the abrasion of each part continuously, thus improving stability and the service life of automobile engine work。Using gear type dosing pump as lubricating oil pump in traditional automobile engine, along with the raising of engine speed, the fuel delivery of lubricating oil pump is linearly increasing, therefore must reveal by pressure limiting valve by the lubricating oil supplied during high rotating speed more。Power needed for lubricating oil pump is provided by electromotor, and dosing pump can consume electromotor power consumption excessively when high rotating speed。Become displacement oil pump and according to the needs of lubricating system, can reasonably regulate pump delivery, thus reducing the power consumption consumption of electromotor。Can draw according to external research report, adopt the automobile engine becoming displacement oil pump can reduce the fuel oil consumption of 0.5%～2%, and when electromotor works for a long time under high speed conditions, adopt the automobile of displacement-variable oil pump can reduce the fuel oil consumption of 3%。
Gear type variable rate pump is usually used in automobile engine, such as Chinese patent CN203384624U discloses a kind of displacement-variable oil pump, this lubricating oil pump is a kind of gear type variable rate pump, including shell, the driving gear being located in shell inner cavity and driven gear, being additionally provided with a cylindrical slide coaxially connected with driven gear in shell inner cavity, cylindrical slide is coaxially connected with driven gear and can move axially together with driven gear；Can changing every turn discharge capacity by changing the engaging width of driven gear and driving gear, regulating thus realizing variable。Operationally, the overlap coefficient of the engagement of driving gear and driven gear, more than 1, namely must have two pairs of gear teeth to be meshed to gear type variable rate pump simultaneously, forms pocketed oil chamber between driving gear and driven gear, and the volume in pocketed oil chamber can change with the rotation of gear。When the volume in pocketed oil chamber reduces, the fluid in pocketed oil chamber is squeezed and produces high pressure, and is extruded from pocketed oil chamber by fluid, causes fluid to generate heat, and, the part such as the bearing of gear type variable rate pump can be influenced by power inequality；When the volume in pocketed oil chamber increases, pocketed oil intracavity can form parital vacuum, and cavitation corrosion, noise, vibration and cavitation can occur the fluid in pocketed oil chamber。Here it is the pocketed oil phenomenon of gear pump, pocketed oil phenomenon can result in the pressure fluctuation of gear pump。In order to improve the service behaviour of gear pump, it is necessary to reduce the pressure fluctuation in pocketed oil chamber。
In gear type dosing pump, alleviating the main method of Oil-blocking Phenomenon in Gear Oil Pump is open compensating groove on the sidewall of chamber in the enclosure, the design of compensating groove be external toothing the design of gear type dosing pump in one of of paramount importance link, whether the design of compensating groove is reasonable, directly influences service behaviour and the service life of gear pump。Compensating groove principal mode has: 1) the double square compensating groove that driving gear and the driven gear line of centres are arranged symmetrically with relatively；2) the Double Circle compensating groove that driving gear and the driven gear line of centres are arranged symmetrically with relatively；3) double; two compensating grooves of relative driving gear and driven gear line of centres unsymmetrical arrangement。But these compensating grooves are opened on the two end cover plate of driving gear and driven gear, may be only available for driving gear and the constant situation of driven gear end face relative position, for becoming displacement gear pump, owing to the engaging width of driving gear and driven gear changes along with the rotation speed change of lubricating oil pump, so the end face relative position of driving gear and driven gear can change, so, difference due to fixed displacement formula gear pump with the architectural difference and working method that become displacement gear pump, compensating groove structure in gear type dosing pump cannot be applicable to become displacement gear pump, current variable gear wheel pump there is no the effective ways solving pocketed oil phenomenon。
Summary of the invention
The shortcoming of prior art in view of the above, the present invention provides a kind of gear type variable rate pump, it is possible to the pressure in release pocketed oil chamber, reduces pressure fluctuation。
In order to achieve the above object and relevant purpose, a kind of gear type variable rate pump of the present invention adopts the following technical scheme that a kind of gear type variable rate pump, including shell, it is located at the driving gear in shell inner cavity and driven gear, driving gear and driven gear are meshed and form pocketed oil chamber, shell inner cavity is additionally provided with a cylindrical slide, cylindrical slide is coaxially connected with driven gear and can move axially together with driven gear, cylindrical slide is provided with along the axially extended compensating groove of cylindrical slide, one end of compensating groove extends to the end face of driven gear and can connect with described pocketed oil chamber。
Further, cylindrical slide is provided with one section of arcwall face matched with the outside circle of driving gear, is provided with described compensating groove on arcwall face。
Further, shell is provided with inlet port and oil drain out, and described compensating groove is arranged between the line of centres and the oil drain out of driving gear and driven gear。
Further, being perpendicular to the cross section that compensating groove cross section is compensating groove of cylindrical slide axis, the cross section of compensating groove is gradually increased to the other end from the one end near driven gear end face。
Further, the difference of the axial length of the compensating groove maximum engagement width more than or equal to driving gear and driven gear and minimum engaging width。
Preferably, being perpendicular to the cross section that compensating groove cross section is compensating groove of cylindrical slide axis, between the line of centres and the cross section of described compensating groove of driving gear and driven gear, minimum range is Bd, formula below determine:
In formula, m is the modulus of driving gear and driven gear；The angle of engagement for driving gear and driven gear；Pressure angle for driving gear and driven gear。
Further, the longitudinal section that compensating groove cross section is compensating groove of the dead in line with driving gear, the longitudinal section of compensating groove is rectangular/trapezoidal/triangle。
Further, being perpendicular to the cross section that compensating groove cross section is compensating groove of cylindrical slide axis, the cross section of compensating groove is the circular section that one section of outside circle along driving gear extends。
Further, the two ends of described circular section are 25 ° with the line angle at driving gear center。
Further, the cross section of compensating groove is radially of a size of 1～2mm along driving gear。
As mentioned above, a kind of gear type variable rate pump of the present invention, have the advantages that on the cylindrical slide of gear type variable rate pump, be provided with axially extended compensating groove, when the driven gear of gear type variable rate pump axially move and make driving gear end face and driven gear end face not at grade time, owing to cylindrical slide moves together with driven gear, and the end face of compensating groove extends to driven gear end face, so the cross section, pocketed oil chamber of driven gear end connects in driven gear end with compensating groove；Owing to compensating groove is axially extending, the cross section, pocketed oil chamber of driving gear end connects in driving gear end with compensating groove, by such mode, in the process that driven gear axially moves, compensating groove can connect with pocketed oil chamber, thus reducing the pressure fluctuation in pocketed oil chamber, reduce the cavitation corrosion in pocketed oil chamber and cavitation phenomenon。
Accompanying drawing explanation
Fig. 1 is shown as the schematic perspective view of the gear type variable rate pump of the embodiment of the present invention, and housing portion does not show。
The schematic cross-section that Fig. 2 is shown as in Fig. 1 A-A, only shows driving gear and driven gear。
The schematic cross-section that Fig. 3 is shown as in Fig. 1 B-B, only shows cylindrical slide and coordinates cylinder。
Fig. 4 is shown as the schematic perspective view of cylindrical slide。
Fig. 5 is shown as the schematic cross-section of driving gear, driven gear, pocketed oil chamber and the compensating groove axially observed from driving gear。
The schematic cross-section that Fig. 6 is shown as in Fig. 3 C-C, only shows the longitudinal section of compensating groove。
Piece mark explanation
1 driving gear 6 compensating groove
The cross section of 2 pocketed oil chamber 7 compensating grooves
The longitudinal section of 3 driven gear 8 compensating grooves
4 cylindrical slides 9 coordinate cylinder
5 arcwall faces
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art the content disclosed by this specification can understand other advantages and effect of the present invention easily。The present invention can also be carried out by additionally different detailed description of the invention or apply, and the every details in this specification based on different viewpoints and application, can also carry out various modification or change under the spirit without departing from the present invention。
Fig. 1 is shown as the schematic perspective view of the gear type variable rate pump of the embodiment of the present invention, housing portion does not show, as shown in Figure 1, a kind of gear type variable rate pump provided by the invention, including shell (not showing in Fig. 1), the driving gear 1 being located in shell inner cavity and driven gear 3, driving gear 1 and driven gear 3 are meshed and form pocketed oil chamber 2 (see Fig. 2 and Fig. 5), being additionally provided with a cylindrical slide 4 in shell inner cavity, cylindrical slide 4 is coaxially connected with driven gear 3 and can move axially together with driven gear 3；Cylindrical slide 4 is provided with along the axially extended compensating groove 6 of cylindrical slide 4；One end of compensating groove 6 extends to the end face of driven gear 3 and can connect with described pocketed oil chamber 2。So, because being provided with axially extended compensating groove on the cylindrical slide of gear type variable rate pump, when the driven gear of gear type variable rate pump axially move and make driving gear end face and driven gear end face not at grade time, owing to cylindrical slide moves together with driven gear, and the end face of compensating groove extends to driven gear end face, so the cross section, pocketed oil chamber of driven gear end connects in driven gear end with compensating groove；Owing to compensating groove is axially extending, the cross section, pocketed oil chamber of driving gear end connects in driving gear end with compensating groove, by such mode, in the process that driven gear axially moves, compensating groove can connect with pocketed oil chamber, thus reducing the pressure fluctuation in pocketed oil chamber, reduce the cavitation corrosion in pocketed oil chamber and cavitation phenomenon。
As shown in Figure 3 and Figure 4, in gear type variable rate pump, cylindrical slide 4 is provided with one section of arcwall face 5 matched with the outside circle of driving gear 1, arcwall face 5 is towards driving gear 1, driving gear 1 is also coaxially connected with a cooperation cylinder 9 matched with the arcwall face 5 on cylindrical slide 4, when driving gear 1, driven gear 3, when cylindrical slide 4 and cooperation cylinder 9 are arranged in shell (not shown) inner chamber, driving gear 1 and driven gear 3 are always at engagement and form pocketed oil chamber 2 (see Fig. 2 and Fig. 5), both sides, pocketed oil chamber 2 are oil sucting cavity (not shown) and oil-discharging cavity (not shown) respectively, tooth top due to sidewall and the driving gear 1 of shell inner cavity, the tooth top of driven gear 3, the external cylindrical surface of cylindrical slide 4, the external cylindrical surface coordinating cylinder 9 closely cooperates, and oil sucting cavity and oil-discharging cavity are kept apart by pocketed oil chamber, so oil sucting cavity does not connect with oil-discharging cavity。When driving gear 1 and driven gear 3 full-depth tooth engage, the end face alignment of driving gear 1 and driven gear 3, the arcwall face 5 on cylindrical slide 4 coordinates with coordinating cylinder 9；Driven gear 3 move axially and with the gear tooth portions of driving gear 1 engage time, the tooth top of driving gear 1 coordinates with the arcwall face 5 on cylindrical slide 4, as the preferred mode of one, described compensating groove 6 can be set on arcwall face 5, in gear type variable rate pump operation process, when pocketed oil chamber 2 rotates to compensating groove 6 place, compensating groove 6 connects with pocketed oil chamber 2, when pocketed oil chamber 2 volume increases, fluid enters into pocketed oil chamber 2 from compensating groove 6, reduces the cavitation corrosion in pocketed oil chamber 2 and cavitation phenomenon；When pocketed oil chamber 2 volume reduces, fluid enters into compensating groove 6 from pocketed oil chamber 2, reduces the pressure in pocketed oil chamber 2。The shell of gear type variable rate pump is additionally provided with inlet port (not shown) and oil drain out (not shown), fluid is sucked by gear type variable rate pump from inlet port, fluid is discharged from oil drain out after supercharging, can arrange above-mentioned along the axially extended compensating groove 6 of cylindrical slide 4 between the line of centres of driving gear 1 and driven gear 3 and oil drain out, so, when pocketed oil chamber 2 rotates from the line of centres of driving gear 1 and driven gear 3 to oil drain out, pocketed oil chamber 2 volume reduces, fluid enters compensating groove 6 from pocketed oil chamber 2, reduce the pressure in pocketed oil chamber 2。
The gear type variable rate pump of the present invention is commonly used as the lubricating oil pump of electromotor, lubricating system for electromotor provides machine oil, now, gear type variable rate pump is driven by the bent axle of electromotor, when engine speed is more high, the rotating speed of gear type variable rate pump is more high, and the volume change in pocketed oil chamber 2 is more fast, when the volume in pocketed oil chamber 2 increase more fast time, cavitation corrosion and cavitation phenomenon are more serious；When the volume in pocketed oil chamber 2 reduce more fast time, the pressure in pocketed oil chamber 2 is more big。When engine speed is more high, volume change in pocketed oil chamber 2 is more fast, fluid is required to more flow between pocketed oil chamber 2 and compensating groove 6 rapidly, so just requiring that the through-flow open area between compensating groove 6 and pocketed oil chamber 2 is more big, so, fluid can quickly flow between pocketed oil chamber 2 and compensating groove 6, pocketed oil phenomenon could be eased more goodly。When the rotating speed of electromotor increases, in order to make the lubricating system desirable pressure of oil liquid pressure that the oil drain out of gear type variable rate pump exports and electromotor adapt, the driven gear 3 of gear type variable rate pump can move axially and make the engaging width between driving gear 1 and driven gear 3 reduce and every turn discharge capacity to change。For these reasons, pocketed oil phenomenon is alleviated better in order to make the rotating speed of through-flow open area between compensating groove 6 and pocketed oil chamber 2 and electromotor adapt, as shown in Figure 3 and Figure 5, being perpendicular to the cross section 7 that compensating groove 6 cross section is compensating groove of cylindrical slide 4 axis, the cross section 7 of compensating groove is gradually increased to the other end from the one end near driven gear 3 end face。So, when engine speed increases, the distance moved axially along with driven gear 3 increases, and cross section 7 area of the compensating groove of driving gear 1 end is more big, and namely the through-flow open area between compensating groove 6 and pocketed oil chamber 2 is more big。
Already described above, the driven gear 3 of the gear type variable rate pump of the present invention can move axially and make the engaging width of driving gear 1 and driven gear 3 change, thus reaching to become the purpose of discharge capacity。Move axially in process at driven gear 3, in order to make compensating groove 6 can connect with pocketed oil chamber 2, the axial length of compensating groove 6 should more than or equal to the difference of the driving gear 1 maximum engagement width with driven gear 3 with minimum engaging width, so, driven gear 3 and driving gear 1 are in arbitrary position of engagement, and compensating groove 6 can both connect with pocketed oil chamber 2 in the end of driving gear。Pocketed oil chamber 2 is always formed near the line of centres of driving gear 1 and driven gear 3, compensating groove 6 should also be as being arranged near the line of centres of driving gear 1 and driven gear 3, compensating groove 6 is wanted suitably relative to the position of driving gear 1 and driven gear 3 line of centres, in case inlet port is connected by pocketed oil chamber 2 and compensating groove 6 with oil drain out。Compensating groove can connect with oil sucting cavity or oil-discharging cavity individually, but compensating groove can not connect with oil sucting cavity or pocketed oil chamber simultaneously。Preferably, as it is shown in figure 5, minimum range is Bd between the cross section 7 of the line of centres of driving gear 1 and driven gear 3 and described compensating groove, formula below determine:
In formula, t0For the gear base pitch of driving gear 1 and driven gear 3, m is driving gear 1 and the module of driven gear 3；The angle of engagement for driving gear 1 and driven gear 3；For the pressure angle of driving gear 1 and driven gear 3, above-mentioned parameter is driving gear 1 and the design parameter of driven gear 3, and those skilled in the art directly can determine according to the self character of driving gear 1 and driven gear 3 and the two installation relation。As it is shown in figure 5, in the embodiment of a kind of gear type variable rate pump of the present invention, the cross section 7 of compensating groove connects with oil-discharging cavity (not shown)。
In gear type variable rate pump operation process, compensating groove 6 is wanted to connect with pocketed oil chamber 2, in actual design, cross section 7 shape of compensating groove is also unrestricted, as long as can connect with pocketed oil chamber 2 in gear type variable rate pump operation process, as a kind of preferred embodiment, as shown in Figure 3 and Figure 5, the cross section 7 of compensating groove is the circular section that one section of outside circle along driving gear 1 extends, circular section is between two sections of anisodiametric isocentric circular arc, described two sections of anisodiametric isocentric circular arc are all with the center of driving gear 1 for the center of circle, the circular arc that wherein diameter is less overlaps with the outside circle of driving gear 1, so, in gear pump with variable capacity operation process, when pocketed oil chamber 2 rotates to compensating groove 6 place, the part being positioned at driving gear 1 tooth top place in pocketed oil chamber 2 necessarily can connect with compensating groove 6。Compensating groove 6 needs enough length can make pocketed oil chamber 2 can connect constantly before pocketed oil chamber 2 is opened with compensating groove 6, as shown in Figure 3, in the gear type variable rate pump of the present invention, the line angle theta at the two ends of the circular section of compensating groove 6 and driving gear 1 center is 25 °, and the central angle θ namely surrounding two sections of isocentric circular arc of compensating groove 6 is 25 °。Can the size of the cross section 7 of compensating groove determines fluid smooth outflow between compensating groove 6 and pocketed oil chamber 2, so also needing to the cross section 7 for compensating groove to determine rational width, cross section 7 width of compensating groove and the cross section 7 of compensating groove are along driving gear 1 size d radially, in the preferred implementation of the gear type variable rate pump of the present invention, the cross section 7 of compensating groove is 1～2mm along the size d of driving gear 1 radial direction。
In order to make the cross section 7 of compensating groove be gradually increased to the other end from the one end near driven gear 3 end face, as shown in Figure 6, in compensating groove 6, the longitudinal section 8 that compensating groove 6 cross section is compensating groove of the dead in line with driving gear 1, the longitudinal section 8 of compensating groove can be arranged to the trapezoidal shape shown in Fig. 6, can also be the shape as triangle equal in width is gradually increased to the other end from one end, as long as the cross section 7 of compensating groove can be made to be gradually increased to the other end from the one end near driven gear 3 end face。Certainly, when the rotating speed with flourishing machine of the through-flow open area between compensating groove 6 and pocketed oil chamber 2 being made to adapt and alleviate pocketed oil phenomenon better, the longitudinal section 8 of compensating groove can be arranged to rectangle, and namely the cross section 7 of compensating groove remains unchanged at the axial direction of cylindrical slide。
Technical scheme based on above-described embodiment, a kind of gear type variable rate pump of the present invention, by being provided with axially extended compensating groove 6 on the cylindrical slide 4 of gear type variable rate pump, in the process that driven gear 3 moves axially, compensating groove 6 can connect with pocketed oil chamber 2, thus reducing the pressure fluctuation in pocketed oil chamber 2, reduce the cavitation corrosion in pocketed oil chamber 2 and cavitation phenomenon。And, the cross section 7 of compensating groove is gradually increased to the other end from the one end near driven gear 3 end face, and when engine speed increases, the through-flow open area between compensating groove 6 and pocketed oil chamber 2 also increases such that it is able to alleviate pocketed oil phenomenon better。
Above-described embodiment is illustrative principles of the invention and effect thereof only, not for the restriction present invention。Above-described embodiment all under the spirit and category of the present invention, can be modified or change by any those skilled in the art。Therefore, art has usually intellectual such as modifying without departing from all equivalences completed under disclosed spirit and technological thought or change, must be contained by the claim of the present invention。
Claims (10)
1. a gear type variable rate pump, including shell, the driving gear (1) being located in shell inner cavity and driven gear (3), driving gear (1) and driven gear (3) are meshed and form pocketed oil chamber (2), shell inner cavity is additionally provided with a cylindrical slide (4), cylindrical slide (4) is coaxially connected with driven gear (3) and can move axially together with driven gear (3), it is characterized in that:
Being provided with along cylindrical slide (4) axially extended compensating groove (6) on cylindrical slide (4), one end of compensating groove (6) extends to the end face of driven gear (3) and can connect with described pocketed oil chamber (2)。
2. gear type variable rate pump as claimed in claim 1, is characterized in that:
Cylindrical slide (4) is provided with one section of arcwall face (5) matched with the outside circle of driving gear (1), is provided with described compensating groove (6) on arcwall face (5)。
3. gear type variable rate pump as claimed in claim 1, is characterized in that:
Shell is provided with inlet port and oil drain out, and described compensating groove (6) is arranged between the line of centres and the oil drain out of driving gear (1) and driven gear (3)。
4. gear type variable rate pump as claimed in claim 1, is characterized in that:
Being perpendicular to the cross section (7) that compensating groove (6) cross section is compensating groove of cylindrical slide (4) axis, the cross section (7) of compensating groove is gradually increased to the other end from the one end near driven gear (3) end face。
5. gear type variable rate pump as claimed in claim 1, is characterized in that:
The difference of the axial length of compensating groove (6) the maximum engagement width more than or equal to driving gear (1) and driven gear (3) and minimum engaging width。
6. gear type variable rate pump as claimed in claim 1, is characterized in that:
Being perpendicular to the cross section (7) that compensating groove (6) cross section is compensating groove of cylindrical slide (4) axis, between the line of centres and the cross section (7) of described compensating groove of driving gear (1) and driven gear (3), minimum range is Bd, formula below determine:
In formula, m is driving gear (1) and the modulus of driven gear (3)；The angle of engagement for driving gear (1) and driven gear (3)；Pressure angle for driving gear (1) and driven gear (3)。
7. gear type variable rate pump as claimed in claim 1, is characterized in that:
The longitudinal section (8) that compensating groove (6) cross section is compensating groove of the dead in line with driving gear (1), the longitudinal section (8) of compensating groove is rectangular/trapezoidal/triangle。
8. gear type variable rate pump as claimed in claim 1, is characterized in that:
Being perpendicular to the cross section (7) that compensating groove (6) cross section is compensating groove of cylindrical slide (4) axis, the cross section (7) of compensating groove is the circular section that one section of outside circle along driving gear (1) extends。
9. gear type variable rate pump as claimed in claim 8, is characterized in that:
The line angle at the two ends of described circular section and driving gear (1) center is 25 °。
10. gear type variable rate pump as claimed in claim 8, is characterized in that:
The cross section (7) of compensating groove is radially of a size of 1～2mm along driving gear (1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216685.2A CN105697970A (en) | 2016-04-08 | 2016-04-08 | Gear-type variable pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216685.2A CN105697970A (en) | 2016-04-08 | 2016-04-08 | Gear-type variable pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105697970A true CN105697970A (en) | 2016-06-22 |
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ID=56219551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610216685.2A Pending CN105697970A (en) | 2016-04-08 | 2016-04-08 | Gear-type variable pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN105697970A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119741A (en) * | 2016-11-30 | 2018-06-05 | 长城汽车股份有限公司 | Oil pump and vehicle |
| CN109058101A (en) * | 2018-08-27 | 2018-12-21 | 爱柯迪股份有限公司 | Anti-seismic variable capacity oil pump |
| CN114320885A (en) * | 2021-12-30 | 2022-04-12 | 淮安万科液压机械有限公司 | Gear pump with constant-current flow dividing function |
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| US4740142A (en) * | 1985-08-09 | 1988-04-26 | Rohs Hans Gunther | Variable capacity gear pump with pressure balance for transverse forces |
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| JP2008082340A (en) * | 2006-09-28 | 2008-04-10 | Trw Automotive Gmbh | Hydraulic device |
| US20140056732A1 (en) * | 2012-08-22 | 2014-02-27 | Magna Powertrain | Hybrid variable external gear pump |
| CN105041639A (en) * | 2015-08-27 | 2015-11-11 | 刘凡 | External gearing variable gear pump |
| CN205534993U (en) * | 2016-04-08 | 2016-08-31 | 上海幸福摩托车有限公司 | Gear formula variable pump |
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| US4740142A (en) * | 1985-08-09 | 1988-04-26 | Rohs Hans Gunther | Variable capacity gear pump with pressure balance for transverse forces |
| US6283735B1 (en) * | 1998-10-13 | 2001-09-04 | SCHWäBISCHE HüTTENWERKE GMBH | Variable-delivery external gear pump |
| JP2008082340A (en) * | 2006-09-28 | 2008-04-10 | Trw Automotive Gmbh | Hydraulic device |
| US20140056732A1 (en) * | 2012-08-22 | 2014-02-27 | Magna Powertrain | Hybrid variable external gear pump |
| CN105041639A (en) * | 2015-08-27 | 2015-11-11 | 刘凡 | External gearing variable gear pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119741A (en) * | 2016-11-30 | 2018-06-05 | 长城汽车股份有限公司 | Oil pump and vehicle |
| CN109058101A (en) * | 2018-08-27 | 2018-12-21 | 爱柯迪股份有限公司 | Anti-seismic variable capacity oil pump |
| CN109058101B (en) * | 2018-08-27 | 2024-04-05 | 爱柯迪股份有限公司 | Shock-resistant variable oil pump |
| CN114320885A (en) * | 2021-12-30 | 2022-04-12 | 淮安万科液压机械有限公司 | Gear pump with constant-current flow dividing function |
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Effective date of registration: 20190327 Address after: Building No. 18, 998 Tongji Road, Baoshan District, Shanghai, 20199 Applicant after: Huayu Pilberg Pump Technology Co., Ltd. Address before: 1999 No. 998 Tongji Road, Baoshan District, Shanghai Applicant before: Shanghai Xingfu Motorcycle Co., Ltd. |
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