CN102305170A - Hydraulic return plunger motor - Google Patents
Hydraulic return plunger motor Download PDFInfo
- Publication number
- CN102305170A CN102305170A CN201110139333A CN201110139333A CN102305170A CN 102305170 A CN102305170 A CN 102305170A CN 201110139333 A CN201110139333 A CN 201110139333A CN 201110139333 A CN201110139333 A CN 201110139333A CN 102305170 A CN102305170 A CN 102305170A
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- Prior art keywords
- plunger
- spring
- motor
- base
- spring seat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Hydraulic Motors (AREA)
Abstract
The invention relates to a hydraulic return plunger motor. The plunger motor comprises a base (1), an oil distribution body (2), a plunger (3), a locating bearing(4), a shell (5), a spring seat (6), a central pre-tightening spring (7) and an output shaft(8), wherein the shell (5) is internally provided with the oil distribution body(2), the plunger (3), the locating bearing (4), the spring seat (6) and the central pre-tightening spring (7); the plunger (3) is arranged in the oil distribution body (2); the central pre-tightening spring (7) is connected with the spring seat (6); the base (1) is connected with the shell (5); and the output shaft (8) penetrates through the base (1) so as to be arranged on the locating bearing (4). The plunger motor provided by the invention has the advantages that the rupture problem of the original spring is thoroughly solved, the reliability of the hydraulic motor is improved, and the service life of the motor is prolonged.
Description
Technical field
The invention belongs to motor, be specifically related to a kind of hydraulic pressure return-stroke type piston motor.
Background technique
Various motors in the market are all kinds of various; The S100 general motor is that coal mine machinery is loading, the transportation of half coal rock tunnel driving unit, a kind of oil hydraulic motor of spraying apparatus design; This motor swashplate adopts rolling type; Motion between plunger and the swash plate mainly is to roll and small slip, and surface friction drag is little, and heating value is little.Piston structure is simple, and no piston shoes are connected with ball pivot, need not to consider the hydrostatic support problem, and contamination resistance is strong, has reduced complicated plunger backhaul mechanism, and oil distribution casing adopts bimetal structure, has oiliness and wear resistance preferably.But, operating conditions has geneogenous deficiency on the structure because badly adding; Through use in recent years; Mainly contain following deficiency: 1. act on the inner turriform spring of plunger; So, make whole motor damage because frequency of okperation is high, spring is long, be prone to cause spring breakage with the plunger hole friction during poor stability spring bending.2. this motor is a line contact-type axial piston motor, and rotor radial power is born by former and later two bearings, and the rear bearing of main force part is the little little needle bearing of carrying, and its working life is shorter.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned deficiency, and a kind of thorough breakage problem that solves former spring is provided, and has improved the reliability of oil hydraulic motor, has prolonged its working life.
Technological scheme of the present invention: a kind of hydraulic pressure return-stroke type piston motor; It comprises base, oil distributing member, plunger, positioning bearing, housing, spring seat, center preloading spring and output shaft; Be provided with oil distributing member, plunger, positioning bearing, spring seat, center preloading spring in the housing, plunger is arranged in the oil distributing member, and the center preloading spring is connected with spring seat; Base is connected with housing, and output shaft passes base and is arranged on the positioning bearing.
The present invention compared with prior art has following beneficial effect: 1, adopt the center preloading spring to lean on a kind of plunger return structures of self pressure backhaul; Fundamentally changed the stress of spring; Thoroughly solve the breakage problem of former spring, solved the reliability of this motor preferably.2, adopted the oil distribution casing mode that promptly has intensity that the high bimetal structure formula of oiliness and wear resistance is arranged again, piston structure is simple, and no piston shoes are connected with ball pivot, need not to consider the hydrostatic support problem, and contamination resistance is strong, has reduced complicated plunger backhaul mechanism.3, adopted comparative maturity reliable line contact-type plunger and plain thrust bearing structure, the motion between plunger and the swash plate mainly is to roll and small slip, and surface friction drag is little, and heating value is little.4, adopted the bigger positioning bearing of bearing capacity, the performance and the working life of further having improved this motor.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
A kind of hydraulic pressure return-stroke type piston motor; It comprises base 1, oil distributing member 2, plunger 3, positioning bearing 4, housing 5, spring seat 6, center preloading spring 7 and output shaft 8; Be provided with oil distributing member 2, plunger 3, positioning bearing 4, spring seat 6, center preloading spring 7 in the housing 5, plunger 3 is arranged in the oil distributing member 2, and center preloading spring 7 is connected with spring seat 6; Base 1 is connected with housing 5, and output shaft 8 passes base 1 and is arranged on the positioning bearing 4.
Claims (1)
1. hydraulic pressure return-stroke type piston motor; It comprises base (1), oil distributing member (2), plunger (3), positioning bearing (4), housing (5), spring seat (6), center preloading spring (7) and output shaft (8); It is characterized in that being provided with in the housing (5) oil distributing member (2), plunger (3), positioning bearing (4), spring seat (6), center preloading spring (7); Plunger (3) is arranged in the oil distributing member (2); Center preloading spring (7) is connected with spring seat (6), and base (1) is connected with housing (5), and output shaft (8) passes base (1) and is arranged on the positioning bearing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139333A CN102305170A (en) | 2011-05-25 | 2011-05-25 | Hydraulic return plunger motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110139333A CN102305170A (en) | 2011-05-25 | 2011-05-25 | Hydraulic return plunger motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102305170A true CN102305170A (en) | 2012-01-04 |
Family
ID=45379067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110139333A Pending CN102305170A (en) | 2011-05-25 | 2011-05-25 | Hydraulic return plunger motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102305170A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1473467A (en) * | 1974-05-20 | 1977-05-11 | Karl Marx Stadt Ind Werke | Hydrostatic axial piston machine |
| CN2221111Y (en) * | 1995-01-05 | 1996-02-28 | 韦炳文 | Valve flow-metering high pressure axial plunger pump |
| CN2358245Y (en) * | 1998-12-25 | 2000-01-12 | 陆伯武 | Axial plunger displacement pump without slipper and distributing plate |
| CN1254059A (en) * | 1999-10-22 | 2000-05-24 | 李世六 | Axial multigroup plunger hydraulic variable displacement pump or variable-speed motor |
| CN2416265Y (en) * | 2000-04-26 | 2001-01-24 | 李世六 | Cylindrical and end supply oil multistage and stageless regulating speed hydraulic motor or hydraulic variable pump |
| CN2654897Y (en) * | 2003-11-06 | 2004-11-10 | 浙江大学 | Low friction wear pure water hydraulic axial plunger pump/motor |
-
2011
- 2011-05-25 CN CN201110139333A patent/CN102305170A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1473467A (en) * | 1974-05-20 | 1977-05-11 | Karl Marx Stadt Ind Werke | Hydrostatic axial piston machine |
| CN2221111Y (en) * | 1995-01-05 | 1996-02-28 | 韦炳文 | Valve flow-metering high pressure axial plunger pump |
| CN2358245Y (en) * | 1998-12-25 | 2000-01-12 | 陆伯武 | Axial plunger displacement pump without slipper and distributing plate |
| CN1254059A (en) * | 1999-10-22 | 2000-05-24 | 李世六 | Axial multigroup plunger hydraulic variable displacement pump or variable-speed motor |
| CN2416265Y (en) * | 2000-04-26 | 2001-01-24 | 李世六 | Cylindrical and end supply oil multistage and stageless regulating speed hydraulic motor or hydraulic variable pump |
| CN2654897Y (en) * | 2003-11-06 | 2004-11-10 | 浙江大学 | Low friction wear pure water hydraulic axial plunger pump/motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |