CN2066509U - Axial hydraulic pump with mean structure made of engineering ceramics - Google Patents
Axial hydraulic pump with mean structure made of engineering ceramics Download PDFInfo
- Publication number
- CN2066509U CN2066509U CN 89221860 CN89221860U CN2066509U CN 2066509 U CN2066509 U CN 2066509U CN 89221860 CN89221860 CN 89221860 CN 89221860 U CN89221860 U CN 89221860U CN 2066509 U CN2066509 U CN 2066509U
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- pump
- plunger
- pump housing
- hydraulic pump
- axial hydraulic
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Abstract
The utility model relates to an axial hydraulic pump with mean structure made of engineering ceramics. The pump device comprises a matching oil tray inlaid in front end cap of the pump body, a plunger sleeve inlaid in pump body and a pump body support ring inlaid in a pump case, which are made of engineering ceramics silicon nitride or silicon carbide. The manufacturing technique of ceramics constructional details is compression moulding forming, and agglomeration technology is divided into quadric. The utility model has the advantages that complete machine frictional resistance is low, friction heat quantity is obviously cut down, and driving functions is also reduced, horse power of entire hydraulic system is increased, and fluid functions transference is improved, wherein, the most significant advantage is that pump service life is grown. The function of a ball plunger is characterized in that included angle between the pump body shaft line and the main shaft is enlarged to 45 DEG, the travel range of a plunger piston is lengthened, and the total displacement of the pump is remarkably enlarged.
Description
The present invention relates to fluid transmission fluid press pump in the mechanical engineering, the fluid transmission is a kind of main kind of drive in the mechanical engineering, the axial hydraulic pump field that is widely used in mechanical engineering.
The device of axial hydraulic pump comprises oil distribution casing, the pump housing, plunger and main shaft and pump housing synchronous rotating mechanism and pump case, oil distribution casing is the vital part of axial pump, its function is that fluid sucks and discharges, while oil distribution casing and high speed rotating pump housing front-end face tight connecting, and the gap is very little.Though oil film supporting is arranged, oil distribution casing bears axial pressure and relative frictional resistance, resistance is not only arranged and produce mill heat energy, and heat energy will worsen the fluid quality, be directed to reduce the fluid function transmission, increase oil liquid leakage.
The plunger cavity wall also fits tightly in the plunger outer diameter and the pump housing, and plunger reciprocatingly slides at a high speed and produces frictional resistance and frictional heat also is to cause worsening whole hydraulic system, the reason that lowers efficiency.
Feature of the present invention is that engineering ceramic material is used instead in the friction position, reduces frictional resistance, and heat reduces friction.
Spherical plunger of the present invention is characterized in that plunger head is spherical in shape, and spherical seal ring is inlayed at the ballhead middle part again, and the peripheral upper cut of ring is 45 ° of degree, and spherical seal ring has elasticity tension through heat treatment, and reaches sealing with the chamber wall.Secondly the inclination angle because ballhead of spherical plunger can freely swing in plunger cavity causes that angle increases to 45 ° between pump housing axis and the main shaft, increases plunger stroke, and strengthening plunger single discharge capacity is the oil hydraulic pump important performance indexes.
Because of selecting for use spherical plunger can increase angle between the main shaft and the pump housing, cause the pump housing can not rigidity to connect with main shaft, therefore, the pump housing need support and could keep the running of pump housing axis centre to reach and the oil distribution casing tight connecting, do not make pump housing skew, to the pump housing supporting ring being set there is its important function.
Angle increases between the main shaft and the pump housing, cause main-shaft torque to transmit difficulty, therefore unique synchronous rotating mechanism need be set, adopt the synchronous running shaft of two ends ballhead, because of ballhead can freely tilt in vestibule, for main shaft kinetic energy passes to the pump housing, divide 90 ° to account for blind hole at joining shaft two ends ballhead center line, hole depth is the radius of ball.Joining shaft and the main shaft disk center hole that to inlay ball simultaneously also divide 90 ° at four R grooves of hole side milling, groove depth is the ball radius, four R grooves are milled on pump housing center hole limit equally, groove depth is that synchronous rotating mechanism is promptly formed in the ball radius cooperation, 360 ° of the every revolutions of main shaft, the different corners of synchronous rotating shaft terminal ballhead swing inclination angle servo principal axis, joining shaft ballhead swing inclination angle forces ballhead to inlay spin from transferring displacement.The ball that ballhead is inlayed is to undertake main torque to pass to the pump housing, and ball is the no clamping force of energy rotation event under load, rotates flexibly.
Fig. 1. be the general structure schematic representation of this pump-unit.
Fig. 2. the A-A position is to view among Fig. 1.
Fig. 3. oil distribution casing front view and sectional view.
Be described further below in conjunction with accompanying drawing:
Pump housing front end is inlayed oil distribution casing (1), and with high speed rotating pump housing tight connecting; The plunger ballhead is outer through inlaying spherical plunger bushing (2) with vestibule wall contact position, to reduce the wearing and tearing of plunger ballhead external diameter; Pump housing supporting ring (3) is to keep the running of pump housing axis centre, reaches the supporting member with oil distribution casing (1) tight connecting; Spherical seal ring (4) is adopted in the sealing of spherical plunger and plunger vestibule, and seal ring (4) otch is 45 °; Main shaft kinetic energy passes to the pump housing and takes to rotate synchronously joining shaft (5), and joining shaft (5) is arranged on the two ends ballhead, presses with stage clip, and ball is inlayed at the ballhead middle part, and joining shaft (5) is rotated flexibly.
Oil distribution casing (1), spherical plunger bushing (2), pump housing supporting ring (3), spherical seal ring (4), rotate joining shaft (5) synchronously and all adopt silicon nitride or silicon carbide or the manufacturing of silicon carbide engineering ceramics, its manufacturing process is compression molding, double sintering.
Adopt engineering ceramics making oil distribution casing, plunger bushing, pump housing supporting ring that frictional resistance is reduced, friction ractor 0.01 reduces driving function, is of value to whole hydraulic system efficient.Simultaneously stupalith is wear-resistant, corrosion-resistant, rising-heat contracting-cold not, and the surface can be worked into high finishingness.During actual production,, can save production cost because technology is simplified in compression molding.
Embodiment: silicon carbide is by the designing requirement compression molding, and biscuit is checked through repairing burr, and semi-finished product carry out the first sintering finished product, and this moment, hardness was not high, easily processing.As oil distribution casing correct grinding both ends of the surface, plunger bushing and pump housing supporting ring correct grinding endoporus and external diameter and both ends of the surface are carried out the qualitative sintering of secondary again with processed finished product.The product of double sintering also will be processed at last, grinds with the identical plane of the pump housing as oil distribution casing to reach the parallelism requirement, grinds endoporus as plunger bushing and supporting ring, and it promptly is acceptable product that the mistake circularity of endoporus and parallelism reach required precision.
The joint method of ceramic fitting and metal with epoxy resin or 871 adhesives gummed, at first is cleaning ceramic spare and metalwork, apply adhesive then, with the position that special tool is packed ceramic fitting to stipulate into, then the workpiece of gummed is put into vacuum box, bleeding is heating and curing.
Claims (4)
1, a kind of engineering ceramics is made the axial hydraulic pump of main member, of the present utility model being characterised in that inlayed oil distribution casing (1) in the pump housing front end, inlay spherical plunger bushing (2) in the pump housing, the pump housing is supported by supporting ring (3), spherical seal ring (4) is inlayed at the ballhead middle part of plunger, the synchronous rotary spherical head of the main shaft and pump housing joining shaft (5), ball is inlayed at the spherical middle part that connects two ends.
2, want 1 described axial hydraulic pump according to right, it is characterized in that oil distribution casing (1), circular column plug sleeve (2), supporting ring (3) can be selected a kind of made of silicon nitride, silicon carbide for use.
3, axial hydraulic pump according to claim 1 is characterized in that inlaying annular sealing ring (4) in the middle part of the plunger ballhead.
4, axial hydraulic pump according to claim 1 is characterized in that inlaying ball in the middle part of the ballhead of two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89221860 CN2066509U (en) | 1989-12-29 | 1989-12-29 | Axial hydraulic pump with mean structure made of engineering ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89221860 CN2066509U (en) | 1989-12-29 | 1989-12-29 | Axial hydraulic pump with mean structure made of engineering ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2066509U true CN2066509U (en) | 1990-11-28 |
Family
ID=4876243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89221860 Withdrawn CN2066509U (en) | 1989-12-29 | 1989-12-29 | Axial hydraulic pump with mean structure made of engineering ceramics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2066509U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101313148B (en) * | 2005-11-24 | 2010-04-14 | 株式会社小松制作所 | Inclined shaft-type variable displacement pump/motor |
| CN104160150A (en) * | 2011-11-16 | 2014-11-19 | 太平洋科技公司 | Improved ROTARY AXIAL PISTON PUMP |
| CN106762505A (en) * | 2016-11-28 | 2017-05-31 | 太原科技大学 | A kind of hydraulic pump with swing swash plate and rotation valve plate |
-
1989
- 1989-12-29 CN CN 89221860 patent/CN2066509U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101313148B (en) * | 2005-11-24 | 2010-04-14 | 株式会社小松制作所 | Inclined shaft-type variable displacement pump/motor |
| CN104160150A (en) * | 2011-11-16 | 2014-11-19 | 太平洋科技公司 | Improved ROTARY AXIAL PISTON PUMP |
| US10309380B2 (en) | 2011-11-16 | 2019-06-04 | Ocean Pacific Technologies | Rotary axial piston pump |
| CN106762505A (en) * | 2016-11-28 | 2017-05-31 | 太原科技大学 | A kind of hydraulic pump with swing swash plate and rotation valve plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE TO: NONE |
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| CP02 | Change in the address of a patent holder |
Address after: Hangzhou City, Zhejiang Province, Gongshu District City Village 1 Building No. 2 103 Patentee after: Fang Ming Address before: Hangzhou, Zhejiang, Gongshu District province sell fish bridge grass camp Lane No. 85 Patentee before: Fang Ming |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |