CN88210908U - Rolling friction stroking mechanism of axial plunger pump - Google Patents
Rolling friction stroking mechanism of axial plunger pump Download PDFInfo
- Publication number
- CN88210908U CN88210908U CN 88210908 CN88210908U CN88210908U CN 88210908 U CN88210908 U CN 88210908U CN 88210908 CN88210908 CN 88210908 CN 88210908 U CN88210908 U CN 88210908U CN 88210908 U CN88210908 U CN 88210908U
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- CN
- China
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- housing
- stroking mechanism
- swash plate
- variable
- rolling element
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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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Abstract
The utility model relates to a rolling friction stroking mechanism of an axial plunger pump. A new non-regulator round rolling bearing replaces a sliding bearing of a variable inclined disc trunnion; rolling friction replaces sliding friction. Consequently, the variable force of a variable pump is reduced. The utility model has the advantages of high reliability, simple structure and easy fabrication.
Description
The utility model relates to the stroking mechanism of axial piston pump.
Along with industrial development, high-power equipment continues to bring out, adopt various variable displacement pumps to realize that volume control more and more is subject to people's attention, the control function and the mode of operation of variable displacement pump are further developed, and still, there are very distinct issues in some variable displacement pumps at present, that is: realize that the needed power of variable is very big, this has directly caused the pilot pressure of variable displacement pump too high, stroking mechanism and control system complexity thereof, and the cost of pump improves.Fig. 1 is the structural drawing of stroking mechanism in more present variable displacement pumps, and variable swash plate gudgeon place is that sliding friction is the first cause that causes variable force excessive.Variable swash plate (5) is supported on the grommet (3), and pressing plate (1) and screw (2) are fixed on grommet (3) on the housing (4).In the variable process, the variable swash plate rotates around its gyration center, also just produces slide relative with grommet.Because support force and friction factor are all very big, determined that the variable force of rotation variable swash plate is also very big.
In order to reduce the pilot pressure of variable displacement pump, dwindle the stroking mechanism volume, and then dwindle the oil hydraulic pump volume, cut down the consumption of energy and system cost, the utility model provides a kind of axial piston pump rolling friction stroking mechanism.Change the sliding friction at variable swash plate gudgeon place into rolling friction, reduce to rotate the surface friction drag of variable swash plate, thereby reduce the variable force of variable displacement pump, and reliable operation, simple in structure.
Replace sliding friction to have following problems with rolling friction in the stroking mechanism of axial piston pump: suppose variable swash plate and rolling element, the motion between rolling element and the housing is a pure rolling, and then they will form a planetary gear train.Yet owing to reasons such as gravity, pure rolling can't guarantee in the real system.Rolling element differs behind each variable and returns the position of last time surely.For adopting the stroking mechanism of non-full circle rolling bearing, if rolling element is not imposed constraint, in the variable process, produced slip for a certain reason, rolling element is not got back to the position before the variable, even small difference, through the several times accumulation, rolling element might skid off between variable swash plate and grommet, thereby causes stroking mechanism to lose efficacy.Can not adopt rigidity spacing herein, will no longer roll during the position, become sliding friction again, even damage limit stoper because rolling element reaches capacity.
For these reasons, rolling friction stroking mechanism of the present utility model is made up of housing, variable swash plate, bearing.Rolling element (8) involves bar (11) and passes hole on the retainer (7) between housing (6) and variable swash plate (13), and variable swash plate (13), involves bar (11) and housing (6) constitutes slidercrank mechanism.Under normal operation, the mutual noninterference that works alone of slidercrank mechanism and planetary gear train, when rolling element has for a certain reason produced slip, and this slides past accumulation and when interfering the motion of slidercrank mechanism, slidercrank mechanism just imposes constraint to rolling element, guarantees the proper functioning of stroking mechanism.
In order to reduce the machining precision of housing, prolong the housing life-span, between rolling element (8) and housing (6), add a non-full circle grommet (9).Variable swash plate (13) double as bearing inner ring can reduce volume.Rolling element is selected roller or needle roller for use, to increase lifting surface area.Involving bar (11) one ends is articulated on the variable swash plate (13) by bearing pin (12), the other end is supported in bearing (10) on the housing (6), involve in the thin cutting edge hole of the bearing (10) of bar (11) on retainer (7) and the housing (6) and pass, to guarantee the accuracy of rolling element position.
Grommet (9) is bonded on the housing (6), advantage be simple in structure, volume is little.Rolling element (8) is closely arranged in retainer (7), does not have Spacer each other.
In sum, the utility model axial piston pump rolling friction stroking mechanism has reduced surface friction drag, and simple in structure, reliable operation has advantages of high practicability.
Fig. 1 is an axial piston pump sliding friction stroking mechanism.Fig. 2 is an embodiment of the utility model axial piston pump rolling friction stroking mechanism.Among the figure: the 1-pressing plate; The 2-screw; 3,9-grommet; 4,6-housing; 5,13-variable swash plate; The 7-retainer; The 8-rolling element; The 10-bearing; 11-involves bar; The 12-bearing pin.
Claims (5)
1, axial piston pump rolling friction stroking mechanism is made of housing, variable swash plate, bearing, it is characterized in that:
(1) rolling element is between housing and variable swash plate;
(2) the variable swash plate, involve bar and housing and constitute slidercrank mechanism;
(3) involve bar and pass hole on the retainer.
2, stroking mechanism as claimed in claim 1 is characterized in that:
(1) grommet of non-completely circular structure is attached at housing;
(2) the double bearing inner ring of doing of variable swash plate;
(3) rolling element is roller or needle roller;
(4) involve bar one end and be articulated in the variable swash plate by bearing pin, the other end is supported on the housing.
3, stroking mechanism as claimed in claim 1 or 2, it is characterized in that: rolling element is closely arranged.
4, stroking mechanism as claimed in claim 2, it is characterized in that: grommet is bonded on the housing.
5, stroking mechanism as claimed in claim 1 or 2 is characterized in that: retainer and housing with involve the position that bar contacts and be thin cutting edge hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88210908 CN88210908U (en) | 1988-03-26 | 1988-03-26 | Rolling friction stroking mechanism of axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88210908 CN88210908U (en) | 1988-03-26 | 1988-03-26 | Rolling friction stroking mechanism of axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88210908U true CN88210908U (en) | 1988-12-14 |
Family
ID=4844371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88210908 Withdrawn CN88210908U (en) | 1988-03-26 | 1988-03-26 | Rolling friction stroking mechanism of axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88210908U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090721C (en) * | 1995-05-09 | 2002-09-11 | 帝人制机株式会社 | Inclined plate type double speed hydraulic motor |
| CN105526250A (en) * | 2016-03-02 | 2016-04-27 | 张雪 | Crescent single-row cylindrical roller bearing |
| CN106763129A (en) * | 2015-11-25 | 2017-05-31 | 无锡市德美嘉机械科技有限公司 | A kind of inclined disc type axis axial plunger pump or motor wave component |
| CN109737025A (en) * | 2019-02-25 | 2019-05-10 | 金职液压动力(金华)有限公司 | A kind of plunger pump variable swash plate seat of friction and rolling compound action |
-
1988
- 1988-03-26 CN CN 88210908 patent/CN88210908U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090721C (en) * | 1995-05-09 | 2002-09-11 | 帝人制机株式会社 | Inclined plate type double speed hydraulic motor |
| CN106763129A (en) * | 2015-11-25 | 2017-05-31 | 无锡市德美嘉机械科技有限公司 | A kind of inclined disc type axis axial plunger pump or motor wave component |
| CN105526250A (en) * | 2016-03-02 | 2016-04-27 | 张雪 | Crescent single-row cylindrical roller bearing |
| CN109737025A (en) * | 2019-02-25 | 2019-05-10 | 金职液压动力(金华)有限公司 | A kind of plunger pump variable swash plate seat of friction and rolling compound action |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |