CN1869459B - Oil-hydraulic pump, oil-hydraulic pump unit, and oil-pressure driving apparatus - Google Patents
Oil-hydraulic pump, oil-hydraulic pump unit, and oil-pressure driving apparatus Download PDFInfo
- Publication number
- CN1869459B CN1869459B CN2006100819259A CN200610081925A CN1869459B CN 1869459 B CN1869459 B CN 1869459B CN 2006100819259 A CN2006100819259 A CN 2006100819259A CN 200610081925 A CN200610081925 A CN 200610081925A CN 1869459 B CN1869459 B CN 1869459B
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- Prior art keywords
- oil pressure
- oil
- pressure pump
- pump
- side body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
- F04C14/265—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels being obtained by displacing a lateral sealing face
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/04—Regulating by means of floats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Rotary Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
This invention provides an oil pressure pump, which can prevent damages under high pressure without individually installing a pressure reducing valve. The casing 1a comprises a body side and a cover side divided on the surface vertical to the revolving shaft 1d of the oil pressure pump 1; the cover side casing 1b is oil sealed and butt jointed with the body side casing 1c using a spring 1m at the predetermined pressure corresponding to the allowed oil pressure of the pump.
Description
Technical field
The present invention relates to integrated oil pressure pump and operating oil tank at least, the housing of described oil pressure pump be included in the oil pressure pump unit that constitutes in the described operating oil tank oil pressure pump, be provided with this oil pressure pump the oil pressure pump unit, be provided with the hydraulic drive unit that imposes driving force independently with oil pressure to driven member of this oil pressure pump.
Background technique
In prior oil pressure pump and the incorporate oil pressure pump of operating oil tank unit, its structure is that above-mentioned oil pressure pump housing is included in the above-mentioned operating oil tank.
In addition, a kind of hydraulic drive unit has been arranged, be on such oil pressure pump unit, also have and drive above-mentioned oil pressure pump motor, use the oil pressure activated device that the working oil from above-mentioned oil pressure pump drives, the various valves of the mobile usefulness of Control work oil between these hydraulic machines, it is integrated, impose driving force with oil pressure to driven member independently.
An example as such hydraulic drive unit, record in patent documentation 1, this oil hydraulic circuit of expression figure in Fig. 5 (a), its section full figure of expression in (b), the front view of expression oil pressure pump in (c), the longitudinal sectional drawing of expression (c) in (d).
In addition, Fig. 5 (c) and Fig. 5 (d) be not although put down in writing on this patent documentation 1, and it is drawn for the invention work with the application contrasts by the applicant as the same people of patent documentation 1 claimant, is used in its structure of conceptive expression.
For independently, that is to say, working oil imposes driving force with oil pressure to driven member W circularly in closed-loop system, shown in Fig. 5 (a), the basic constituent element that this hydraulic drive unit OU is equipped with has: by the oil pressure pump P of the positive and negative two-way force feed working oil of clockwise and anticlockwise motor M (driving), the oil pressure activated device C (being oil pressure cylinder here) of the above-mentioned driving force that takes place with this working oil action, in enclosed space, store the operating oil tank T of working oil, the a pair of hydraulic control valve OT1 of Control work oil positive and negative two-way flow between oil pressure pump P and oil pressure activated device C, OT2, the switching valve V of the positive and negative two-way flow of Control work oil between oil pressure pump P and operating oil tank T.
This hydraulic drive unit OU, except that above-mentioned basic constituent element, at the C1 of the load side grease chamber of oil pressure cylinder C, in the C2 of bottom side grease chamber, on the pipeline between C2 of bottom side grease chamber and the hydraulic control valve OT2, suppress working oil from the C2 of grease chamber to the flowing of safety check OT2, one-way throttle valve SV is set, the vibration that takes place when preventing when oil pressure pump P work the external force from driven member W generation.
To operating oil tank T, the pipeline of reduction valve RV is set respectively from the line branching between oil pressure pump P and hydraulic control valve OT1, the OT2, allows the superfluous working oil operating oil tank T that escapes back when on branch line, abnormal pressure occurring.
In addition, the pipeline of urgent manually operated valve MV is set to fuel tank T branch from the pipeline of the oil pressure cylinder C side of hydraulic control valve OT1, OT2, stop in oil pressure pump P outage etc. under the situation oil pressure cylinder C load side C1 of grease chamber, the C2 of bottom side grease chamber pipeline (oil) being discharged into operating oil tank T, make the oil pressure cylinder C can manually-operable with this urgent manually operated valve MV.
Adopt such formation, this hydraulic drive unit OU not only reaches its good fundamental function, even and the unusual state of affairs appears, also be unlikely to make unit OU to damage, guarantee Security, reliability and avoid accident.
Here the part of the oil pressure pump P relevant with the present invention will be described in more detail.
Shown in Fig. 5 (b), oil pressure pump P among this unit OU, in the major component of holding this oil pressure pump P, side at the operating oil tank T of built-in base side housing Hc, relevant oil pipeline except that above-mentioned all valve OT1, OT2, V also is set, lid side body Hb thickly tightens fixing with clamping bolt Hj oil, do not make leakage of oil.
Oil pressure pump P is provided with on such position, is because this is the nearest position of working oil of sending oily object from conduct, can improve to suct efficient.In addition, even just in case leak working oil between base side housing Hc and the lid side body Hb, these working oil also can drain in the operating oil tank T, can not leak into beyond the unit OU, and the one side of trouble saving (fail safe) is also arranged.
In addition, base side housing Hc and lid side body Hb are collectively referred to as housing Ha.
Now will be with Fig. 5 (c), (d) fastening structure between more detailed description base side housing Hc and the lid side body Hb.
Oil pressure pump P, except that above-mentioned base side housing Hc and lid side body Hb, also have by not shown electric motor driven live axle Hd, the working oil gateway Hh, the mounting hole Hi that mounting cover side body Hb uses that are fixed on actuation gear He on this live axle Hd, come in and go out with the turning axle Hf of driven gear Hg, this driven gear Hg of this actuation gear He engagement, the working oil sent along with the revolution of these actuation gears He, driven gear Hg.
In said structure, on this oil pressure pump P, basically base side housing Hc and lid side body Hb are thickly fixing with tightening with clamping bolt Hj oil, working oil is leaked, this oil pressure pump P with its pipeline that directly links on when occur to surpass allowing the oil pressure of oil pressure, by the reduction valve RV on the loop of Fig. 5 (a), make working oil escape into operating oil tank T, prevent damages such as oil pressure pump.
But, adopt such structure, discreet component and relative pipelines such as reduction valve RV just must be arranged, as the hydraulic drive unit that requires further miniaturization and reduce cost, this is a major issue that must solve.
Such situation is not limited to hydraulic drive unit discussed above, and other various hydraulic drive units, oil pressure pump unit and the oil pressure pump that uses under same condition also are the same.
Patent documentation 1: the spy open flat 2-296003 communique (Fig. 1, Fig. 7)
Summary of the invention
The problem that solves
The present invention proposes for the problems referred to above, and its objective is provides a kind of reduction valve that can not be provided with separately also can prevent the oil pressure pump that under high pressure damages, oil pressure pump unit, the hydraulic drive unit that this oil pressure pump is housed.
The means of dealing with problems
Oil pressure pump of the present invention, be make oil pressure pump at least and operating oil tank is integrated, the housing of above-mentioned oil pressure pump is packed into operating oil tank in and constitute oil pressure pump unit oil pressure pump, it is characterized in that, base side and lid side that above-mentioned housing is split to form on the face perpendicular to the oil pressure pump turning axle are set, and this lid side body is to allow the predetermined pressure oil of oil pressure thickly to be docked on the base side housing corresponding to pump.
In addition, oil pressure pump of the present invention unit is characterized in that it is equipped with the oil pressure pump that possesses such feature.
In addition, hydraulic drive unit of the present invention is characterized in that, it is equipped with the oil pressure pump that possesses such feature.
Adopt oil pressure pump of the present invention, the lid side body thickly is docked on the base side housing with the predetermined pressure oil corresponding with the pump authorized pressure, so the lid side body plays reduction valve, reduction valve is not set separately, can prevent that also high pressure from causing the damage of oil pressure pump.
In addition, owing to covered by operating oil tank on every side, the working oil that spills is just got back to operating oil tank, and can not drain to beyond the oil pressure pump unit, so there is not the problem to outside leakage of oil.
In addition, adopt oil pressure pump of the present invention unit, hydraulic drive unit,, all can bring into play the effect of above-mentioned oil pressure pump as unit separately.
Description of drawings
Fig. 1 represents to have an example of the hydraulic drive unit of oil pressure pump of the present invention, is its oil hydraulic circuit figure (a), (b) is the conceptual longitudinal sectional drawing of oil pressure pump of (a), (c) is the conceptual front view of (b),
Fig. 2 (a) and (b) are action specification figure of the oil pressure pump of Fig. 1 (b), (c) are the major component enlarged views of (a), (d) are the major component enlarged views of another example of oil pressure pump of the present invention.
Fig. 3 (a) and (b) are action specification figure of another example of oil pressure pump of the present invention.
Fig. 4 (a) and (b) are action specification figure of another example of oil pressure pump of the present invention, (c) are the front views of (b), (d) are the AA sectional drawings of (c).
Fig. 5 is the hydraulic drive unit that the oil pressure pump that has earlier is equipped with in expression, (a) is oil hydraulic circuit figure, (b) is its a part of full figure, is the front elevation of its oil pressure pump (c), (d) is the longitudinal sectional drawing of (c).
1,1A, 1B oil pressure pump
The 1a housing
1b covers side body
1c base side housing
The 1d turning axle
The 1i pilot hole
The 1j clamping bolt
The 1k pad
The 1m spring
1n stepwise clamping bolt
1o nut bottom (end difference)
The 1p framework
1r covers side body
The 1s spring
The 1u oilhole of working
1v covers side body
The 1w protruding part
The 1l motor
2 oil pressure activated devices
3 operating oil tanks
4 hydraulic control valves
5 switching valves
9 oil pressure pump unit
10 hydraulic drive units
Embodiment
Following with reference to description of drawings example of the present invention (embodiment).
Fig. 1 represents to have an example of the hydraulic drive unit of oil pressure pump of the present invention, (a) be its oil hydraulic circuit figure, (b) be the sectional arrangement drawing of oil pressure pump notion, (c) be the front view of the notion of (b), Fig. 2 (a) and (b) are action specification figure of the oil pressure pump of Fig. 1 (b), (c) being the major component enlarged view of (a), (d) is the major component enlarged view of another example of oil pressure pump of the present invention.
This hydraulic drive unit 10, it is independent and oil pressure actuated power is provided simply to be used for needs, and for example, agriculture special car Work machine is in the lifting of arable land.Remove oil pressure pump unit 9 from this hydraulic drive unit 10 as the oil pressure cylinder 2 of oil pressure activated device, with hydraulic drive unit 10 same cases under, be used in and want the occasion independently used as the oil pressure activated device.
In addition, be contained in the oil pressure pump 1 in the hydraulic drive unit 10, not only be used for such hydraulic drive unit, oil pressure pump unit,, in operating oil tank etc., be used for not allowing working oil from the occasion of pump 1 to external leaks even in general oil hydraulic circuit.
This unit 10 is basically by constituting with lower member: the oil pressure pump 1 of motor 11 positive and negative two-way force feed working oil is housed, is driven hydraulic control valve 4, the Control work oil switching valve 5 that positive and negative direction flows between oil pressure pump 1 and operating oil tank 3 that flows at positive and negative direction between oil pressure pump 1 and the oil pressure cylinder 2 to the oil pressure cylinder 2 of driven member W generation driving force, the operating oil tank 3 of storing working oil in the space of sealing, Control work oil by this working oil, it is characterized in that this oil pressure pump 1 need not the reduction valve of setting separately.
The fundamental function of these oil pressure pumps 1, oil pressure cylinder 2, operating oil tank 3, hydraulic control valve 4, switching valve 5, correlation etc., oil pressure pump P, oil pressure cylinder C, operating oil tank T, hydraulic control valve OT1 with pie graph 5 prior art example hydraulic drive unit OU, OT2, switching valve V are identical, so the explanation that repeats is omitted.In addition, the symbol 2a of oil pressure cylinder 2 is the bottom side grease chamber, and symbol 2b is the load side grease chamber.
In addition, this hydraulic drive unit 10 also has one-way throttle valve 7, urgent manually operated valve 6, and the one-way throttle valve SV, the urgent manually operated valve MV that are had with original hydraulic drive unit OU are identical.
The feature of this hydraulic drive unit 10 is, as mentioned above, oil pressure pump 1 does not need independent reduction valve, and consequently, shown in the oil hydraulic circuit of Fig. 1 (a), reduction valve RV and associated pipe thereof that Fig. 5 (a) is essential are all unnecessary.
Now will with Fig. 1 (b) (c), Fig. 2 (a) and (b), (c) describe the feature of such oil pressure pump 1 in detail.
This oil pressure pump 1 the position is set, although do not illustrate in the drawings, be in the identical position of oil pressure pump P with the prior art example shown in Fig. 5 (b), adopt the working oil that oil pressure pump 1 is spilt to get back to the structure of operating oil tank 3.
These key elements, each key element of the oil pressure pump P that Fig. 5 has earlier, lid side body Hb, base side housing Hc, live axle Hd, actuation gear He, driven gear Hg, turning axle Hf, actuator port Hf, pilot hole Hi, clamping bolt Hj, except that the part of following special record, all be identical, be general so-called gear pump, so repeat specification is omitted.
In addition, lid side body 1b cooperates with base side housing 1c and is housing 1a this point, and also lid side body Hb, base side housing Hc, the housing Ha with the prior art example is identical.
Oil pressure pump 1 of the present invention, it is characterized in that, except above-mentioned points, also have base side and lid side that housing 1a is split to form on the face vertical with turning axle 1d, the 1f of oil pressure pump 1, this lid side body 1b thickly is docked on the base side housing 1c with the predetermined pressure oil corresponding with the pump authorized pressure, as concrete method, in this embodiment 1, be furnished with pad 1k and spring 1m.
This pad 1k is as finding out that more clearlyly between the pilot hole and clamping bolt 1j of insert cover side body 1b, it is fixing to tightening of base side housing 1c to reach clamping bolt 1j from Fig. 2 (c).
In addition, as mentioned above, pad 1k a bit is that its aperture goes out the size of a pad greatly so compare different with the lid side body Hb of prior art example between the pilot hole and clamping bolt 1j of lid side body 1b.
In the oil pressure pump 1 of such formation, under normal working pressure, oil pressure pump 1 is shown in Fig. 2 (a), and lid side body 1b thickly docks with base side housing 1c oil, and working oil is not leaked, and oil pressure pump 1 runs well.
But, for a certain reason, when the oil pressure in the oil pressure pump 1 rises to above the pump authorized pressure, the elastic force of lid side body 1b antagonism spring 1m and by jack-up, shown in Fig. 2 (b), the gap occurs between lid side body 1b and the base side housing 1c, high-pressure work oil spills from this gap, gets back to operating oil tank 3.
In case spill the working oil of some, the oil pressure in the oil pressure pump 1 just is reduced to below the pump authorized pressure, gets back to the state of Fig. 2 (a).
So, adopt this oil pressure pump 1, reduction valve needn't be set specially, can avoid oil pressure pump 1 high pressure to damage.In addition, reduction valve and relative pipeline have not needed, and are expected equipment miniaturization, the minimizing of assembling number, cost reduction.
In addition, equip hydraulic drive unit 10, the oil pressure pump unit 9 of such oil pressure pump 1, can bring into play the effect of above-mentioned oil pressure pump 1 as the unit.
In addition, above-mentioned pad 1k, might be with predetermined fastening this clamping bolt of fastening force 1j, to reach the unflagging purpose of clamping bolt 1j, in the time of solving this and prevent relaxation problem, pad 1k that also can be such, and when fastening, for example, below the nut of clamping bolt, add compression spring with common, with the elastic force of this compression spring, reach the predetermined pressure corresponding with the said pump authorized pressure.
Shown in Fig. 2 (d), rank shape clamping bolt 1n is Fig. 2 (c) clamping bolt 1j and pad 1k is integrated forms, generally be called the reamer bolt, external diameter at the external diameter of its nut bottom (end difference) 1o and pad 1k equates, in addition, becomes bigger than the lowest point diameter of the pilot hole 1i of base side housing 1c.
The effect that such rank shape clamping bolt 1n is identical with spring 1m combination with Fig. 2 (c) clamping bolt 1j, pad 1k with spring 1m combination results.
Fig. 3 (a) (b) is the action specification figure of another example of oil pressure pump of the present invention.Wherein, the part that has illustrated is marked with identical label with identical part, so repeat specification is omitted.
This oil pressure pump 1A compares with the gear pump 1 of Fig. 1 (b), difference is, it or not pad 1k and spring 1m combination, but as shown in the figure, be fixed on making up on the base side housing 1c at framework 1p and the spring 1s between this framework 1p and lid side body 1r that covers side body 1r that pack into slidably on the direction vertical with parting plane.
Framework 1p is fixed on the base side housing 1c with clamping bolt 1j is fastening, and its external shape is identical with the lid side body 1b of the gear pump 1 of Fig. 1 (b).
Lid side body 1r is contained in this framework 1p, with spring 1s pressurization, to allow the corresponding predetermined pressure oil of oil pressure thickly to dock with base side housing 1c with pump.In other words, the size of lid side body 1r has just covered oil pressure pump 1A needs the close gear 1e of oil, around 1g, the actuator port 1h.
Framework 1p has the close structure of non-oil that goes up the circulation of permission working oil in position, for example, as shown in the figure, has work oilhole 1t.In addition, also work oilhole 1t can be set, but framework itself is made the single frame structure that does not cover the whole peripheries that cover side body, non-oil is close.
In the oil pressure pump 1A of this spline structure, when moving under normal pressure, shown in Fig. 3 (a), base side housing 1c and lid side body 1r oil thickly dock, and the leakage of working oil can not take place.
On the other hand, if surpassing, the pressure in the pump 1A allows oil pressure, then shown in Fig. 3 (b), the elastic force antagonism of lid side body 1r and spring 1s, slide, the slit occurs between base side housing 1c and lid side body 1r, the working oil that spills is thus got back to operating oil tank 3 by the gap between lid side body 1r and the framework 1p, work oilhole 1t.
Like this, adopt this oil pressure pump 1A, can reach the effect identical, in addition, the hydraulic drive unit of this oil pressure pump 1A, the oil pressure pump unit can be brought into play this oil pressure pump 1A respectively as the unit effect are housed with Fig. 1 (b) gear pump 1.
Fig. 4 (a) (b) is the action specification figure of another example of oil pressure pump of the present invention.(c) being the front view of (b), (d) is the sectional drawing of the AA of (c).
This oil pressure pump 1B, as shown in the figure, compare difference with the oil pressure pump 1 of Fig. 1 and be, be equipped with clamping bolt 1w be fixed on base side housing 1c go up, all with elastomer constitute, its a part of 1v constructs at the lid side body 1u that is subjected to taking place under the situation that pump allows oil pressure resiliently deformable.
This lid side body 1u, as from Fig. 4 (c) as can be seen, its shape is done to such an extent that only cover with around close relevant revolution actuation gear 1e, the swiveling gear 1g of oil and clamping part the protruding part 1v that the fastening force of a clamping bolt 1w of formation does not directly relate to.
Under the state that runs well, become the state shown in Fig. 4 (a), if occur surpassing the oil pressure that pump allows oil pressure, then as Fig. 4 (b), (c), (d) shown in, resiliently deformable takes place in this part 1v, operating oil tank 3 is got back in the working oil effusion in the oil pressure pump 1B.
Like this, adopt this oil pressure pump 1B, can bring into play the effect identical, in addition, the hydraulic drive unit of this oil pressure pump 1B, the oil pressure pump unit is brought into play this oil pressure pump 1B respectively as the unit effect are housed with Fig. 1 (b) gear pump 1.
In addition, in embodiment 1 to 3,, with the gear pump example explanation, but the working oil effusion structure of oil pressure pump of the present invention as oil pressure pump, be not limited to the gear parts of this pump, also go for other oil pressure pumps, for example, vane pump etc.
In addition, as the oil pressure activated device, except that the oil pressure cylinder that illustrate here, also comprising the oil pressure actuated masterpiece is the oil pressure rotation oil pressure activated device of moment output.
The possibility of industrially utilizing
Oil pressure pump of the present invention, oil pressure pump unit, oil pressure driving arrangement can be used for some industry of requiring further miniaturization, reducing cost.
Claims (6)
1. oil pressure pump, it is an oil pressure pump and operating oil tank is incorporate, the housing of described oil pressure pump is contained in the described operating oil tank and constitute the oil pressure pump that the oil pressure pump unit is used at least, it is characterized in that, described housing is provided with base side and the lid side of cutting apart on the face vertical with the turning axle of oil pressure pump, this lid side body is to allow the corresponding predetermined pressure oil of oil pressure thickly to be docked on the base side housing with pump.
2. oil pressure pump according to claim 1, it is characterized in that, the described oiltight that carries out with predetermined pressure connects, be with embed between the pilot hole of described lid side body and the clamping bolt, reach clamping bolt to the pad that is fixedly clamped of base side housing and the nut that is in the clamping bolt after being fixedly clamped down and the spring that produces described predetermined pressure between the described lid side body realize.
3. oil pressure pump according to claim 1, it is characterized in that, described oiltight under predetermined pressure connects, be be fixed on the described base side housing, can be on perpendicular to the direction of described parting plane slidably and non-oil thickly contains the framework of described lid side body and the spring that produces described predetermined pressure between this framework and described lid side body is realized.
4. oil pressure pump according to claim 1, it is characterized in that, it is to realize with covering side body that oiltight under the described predetermined pressure connects, this lid side body is fixed on the described base side housing with clamping bolt, whole with the elastomer formation, resiliently deformable takes place in its part under the situation that is subjected to described pump permission oil pressure.
5. an oil pressure pump unit is characterized in that, it is equipped with any one described oil pressure pump in the claim 1 to 4.
6. a hydraulic drive unit is characterized in that, at least also the oil pressure activated device that drives described oil pressure pump motor and use the working oil from described oil pressure pump unit to drive is integrated on the oil pressure pump as claimed in claim 5 unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-152020 | 2005-05-25 | ||
| JP2005152020A JP4897240B2 (en) | 2005-05-25 | 2005-05-25 | Hydraulic pump, hydraulic pump unit, hydraulic drive unit |
| JP2005152020 | 2005-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1869459A CN1869459A (en) | 2006-11-29 |
| CN1869459B true CN1869459B (en) | 2011-04-06 |
Family
ID=37443206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100819259A Expired - Fee Related CN1869459B (en) | 2005-05-25 | 2006-05-10 | Oil-hydraulic pump, oil-hydraulic pump unit, and oil-pressure driving apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20070243081A1 (en) |
| JP (1) | JP4897240B2 (en) |
| KR (1) | KR101241371B1 (en) |
| CN (1) | CN1869459B (en) |
| CA (1) | CA2546753C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011075415A1 (en) * | 2011-05-06 | 2012-11-08 | Robert Bosch Gmbh | Gear pump e.g. outer gear wheel pump, for use in fuel injection system of Otto engine to convey fuel from low pressure region into high pressure region, has axially displaceable sealing plates resiliently prestressed in direction of chamber |
| DE102013200410B4 (en) * | 2013-01-14 | 2017-12-07 | Schwäbische Hüttenwerke Automotive GmbH | Gas pump with pressure relief to reduce the starting torque |
| US20230258176A1 (en) * | 2022-02-14 | 2023-08-17 | Dana Motion Systems Italia S.R.L. | Electric motor with integrated pump |
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| US5599059A (en) * | 1995-10-02 | 1997-02-04 | Chrysler Corporation | Vehicle sunroof module |
| JP2000161248A (en) * | 1998-12-01 | 2000-06-13 | Kayaba Ind Co Ltd | Hydraulic pump device |
| JP3681315B2 (en) * | 2000-01-19 | 2005-08-10 | 光洋精工株式会社 | Power steering device |
-
2005
- 2005-05-25 JP JP2005152020A patent/JP4897240B2/en not_active Expired - Fee Related
-
2006
- 2006-05-10 CN CN2006100819259A patent/CN1869459B/en not_active Expired - Fee Related
- 2006-05-10 KR KR1020060041913A patent/KR101241371B1/en active IP Right Grant
- 2006-05-12 CA CA2546753A patent/CA2546753C/en not_active Expired - Fee Related
- 2006-05-18 US US11/419,191 patent/US20070243081A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19757855A1 (en) * | 1997-12-24 | 1999-07-01 | Albert Dick | Lubricant injection system for gear drive |
| CN2477863Y (en) * | 2001-03-30 | 2002-02-20 | 西安交通大学 | Mini gear pump |
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal meshed gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1869459A (en) | 2006-11-29 |
| CA2546753A1 (en) | 2006-11-25 |
| CA2546753C (en) | 2014-03-18 |
| KR101241371B1 (en) | 2013-03-08 |
| JP2006329021A (en) | 2006-12-07 |
| JP4897240B2 (en) | 2012-03-14 |
| KR20060121681A (en) | 2006-11-29 |
| US20070243081A1 (en) | 2007-10-18 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Japan Tokyo port Hamamatsucho two chome 4 No. 1 Patentee after: KAYABA INDUSTRY CO LTD Address before: Japan Tokyo port Hamamatsucho two chome 4 No. 1 World Trade Center Building, 11 floor Patentee before: KAYABA Industry Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20210510 |
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| CF01 | Termination of patent right due to non-payment of annual fee |