CN103982415B - A kind of plunger displacement pump and press-fit new technology - Google Patents
A kind of plunger displacement pump and press-fit new technology Download PDFInfo
- Publication number
- CN103982415B CN103982415B CN201410229021.0A CN201410229021A CN103982415B CN 103982415 B CN103982415 B CN 103982415B CN 201410229021 A CN201410229021 A CN 201410229021A CN 103982415 B CN103982415 B CN 103982415B
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- Prior art keywords
- bearing
- pump housing
- footstalk
- bent axle
- press
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Abstract
A kind of plunger displacement pump, including the pump housing, a bent axle is placed in the described pump housing, the two ends of bent axle sequentially pass through the bearing, bearing outer ring and the gland flange that are arranged on axis hole set by pump housing both sides from inside to outside with symmetry, on bent axle the other end footstalk of corresponding footstalk input the bearing of traverse include a bearing inner race and activity is nested with the roller bearing outside bearing inner race.Entirety of the present invention assembling does not need to use hydraulic machinery, also without both sides to pressure, completely avoid that the pump case of the pump housing can be crushed, the situation such as deformation occurs, the inside and outside circle both sides of bearing excessively cooperatively form to exist in randomness tight fit tolerance and press-fit difficulty, it is controlled, directly or indirectly to press-fit and has scrapped the problem assembled with time delay also work, make the assembling speed of overall operation improves about 30%, relative to traditional technique, there is certain novelty.
Description
Technical field
What the present invention relates to a kind of plunger displacement pump and this plunger displacement pump press-fits new technology.
Background technology
Common plunger displacement pump includes a pump housing, a laterally disposed bent axle in the pump housing, crankshaft two end sequentially passes through identical ball bearing, bearing outer ring, sealing member and gland flange, structures shape is the most also that to use the longest press-loading process so far be all adopt mechanical-hydraulic, and both sides are to pressure, manual operation and mechanically formed stepping operation, often can when loading bearing, in bearing, both sides, outer ring excessively cooperatively form tight fit tolerance, namely bearing and outer ring there will be arranged above with deviation or deviation arranged below, and the randomness occurred because of its deviation during in extruding or to pressure, the pump housing is press-fited and there is following problem:
One, pump case can by pressure break, particularly pump body structure thin location；
Two, pump case pressurized is easily deformed, bends；
Three, occur that assembling is done over again, and delay press-fits progress；
Four, random error is difficult to control to, and press-fits scrappage height, and randomness probability of occurrence is 2% ~ 5%.
Five, installation time is slow, by hand operation and machinery stepping.
The reason that summary problem occurs has: one is that pump body structure is not reasonable, perfect not so that press-loading process can improve and innovate and be obstructed.
Summary of the invention
The present invention is contemplated to solve the synthtic price index such as pump body structure is unreasonable causes that press-loading process falls behind, and product reprocesses deformation, appearance leakage, the pump housing breaks, scrappage is high.
The technical scheme that the present invention to solve problem is as follows:
A kind of plunger displacement pump, including the pump housing (6), a bent axle (7) is placed in the described pump housing (6), the two ends of bent axle (7) sequentially pass through the bearing, bearing outer ring (3,9) and the gland flange (2,11) that are arranged on axis hole (6b, 6a) set by the pump housing (6) both sides from inside to outside with symmetry, the upper corresponding footstalk input (7a) of bent axle (7) other end footstalk (7b) the bearing of traverse include a bearing inner race (5) and activity is nested with the roller bearing (4) in bearing inner race (5) outside.
Plunger displacement pump press-fits new technology, it is characterised in that: step is as follows:
A, is nested with bearing inner race (5) on bent axle (7) footstalk (7b)；
B, roller bearing (4) is placed in the axis hole (6b) of the pump housing (6) side, to should hold footstalk gland flange (2) cap bore (2a) on be placed with bearing outer ring (3), then gland flange (2) by bolt (1) be fixed on the pump housing (6) axis hole (6b) outside；
C, overlaps upper ball bearing (8) by bent axle (7) other end footstalk input (7a)；
D, will be equipped with the footstalk of bearing inner race (5) (7b) and loads to the axis hole (6b) securing gland flange (2) from the axis hole (6a) of the pump housing (6)；
E, is inserted in bearing outer ring (9), sealing ring (10) and the gland flange (11) sealed by the pump housing (6) axis hole (6a) on bent axle (7) footstalk input (7a) more successively, then fixes with bolt (12).
Step a, step b and step c are convertible or are synchronously performed.
In step b, gland flange (2) and bearing outer ring (3) can be installed by the step first filling bearing outer ring (3) stationary gland flange (2) equipped with the footstalk (7b) of bearing inner race (5) in bent axle described in step d (7) after the axis hole (6b) of the pump housing (6) more again.
Beneficial effects of the present invention is as follows:
Compared with prior art, entirety of the present invention assembling does not need to use hydraulic machinery, also without both sides to pressure, completely avoid the situation generation that the pump case of the pump housing can be crushed, deform, the inside and outside circle both sides of bearing excessively cooperatively form tight fit tolerance and can also omit and disregard, it is controlled, directly or indirectly to press-fit to scrap and has press-fited the problems such as defective products also work assembling with time delay so that the assembling speed of overall operation has comprehensively improve about 30%, relative to traditional technique, there is certain novelty.
Accompanying drawing illustrates:
Fig. 1 is the STRUCTURE DECOMPOSITION figure of the pump housing of the present invention；
Fig. 2 is the generalized section of the pump housing of the present invention.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention done further details of elaboration.
Consult Fig. 1, Fig. 2, a kind of plunger displacement pump, including the pump housing (6), a bent axle (7) is placed in the described pump housing (6), the two ends of bent axle (7) sequentially pass through the bearing, bearing outer ring (3,9) and the gland flange (2,11) that are arranged on axis hole (6b, 6a) set by the pump housing (6) both sides from inside to outside with symmetry, the upper corresponding footstalk input (7a) of bent axle (7) other end footstalk (7b) the bearing of traverse include a bearing inner race (5) and activity is nested with the roller bearing (4) in bearing inner race (5) outside.Described roller bearing (4) axle center is all parallel, radial rolling transmission.
Plunger displacement pump press-fits new technology, and step is as follows:
A, is nested with bearing inner race (5) on bent axle (7) footstalk (7b)；
B, roller bearing (4) is placed in the axis hole (6b) of the pump housing (6) side, to should hold footstalk gland flange (2) cap bore (2a) on be placed with bearing outer ring (3), then gland flange (2) by bolt (1) be fixed on the pump housing (6) axis hole (6b) outside；
C, overlaps upper ball bearing (8) by bent axle (7) other end footstalk input (7a)；
D, will be equipped with the footstalk of bearing inner race (5) (7b) and loads to the axis hole (6b) securing gland flange (2) from the axis hole (6a) of the pump housing (6)；
E, is inserted in bearing outer ring (9), sealing ring (10) and the gland flange (11) sealed by the pump housing (6) axis hole (6a) on bent axle (7) footstalk input (7a) more successively, then fixes with bolt (12).
Because of whole press-fit process need not use machinery press-fit, for this technique core press-fited be in that use roller bearing (4) with bearing inner race (5) with the use of, so there is no need to bent axle (7) two ends footstalk and will use ball bearing, thus being also not necessary to when assembling use mechanical press mounting, process a, step b and step c that early stage is installed are convertible or are synchronously performed.
In step b, gland flange (2) and bearing outer ring (3) can be installed by the step first filling bearing outer ring (3) stationary gland flange (2) equipped with the footstalk (7b) of bearing inner race (5) in bent axle described in step d (7) after the axis hole (6a) of the pump housing (6) more again.
In whole process, the lateral wall of bearing inner race (5) is at roller bearing (4) interior side contacts, both can separate in the axial direction, make the footstalk that the pump housing both sides originally placing bent axle (7) expose is inserted in bearing again, then re-use hydraulic mechanism thoroughly to abandon from the technique of both sides press-in respectively, here it is no longer needed for considering that the tight fit between the inside and outside circle of bearing and between bearing outer ring and the pump housing (6) both sides axis hole (6a, 6b) is poor so that press-fit and completely become possibility by having been manually done.
And process is no longer necessary to form stepping operation with hydraulic machinery, the so manual time is just short much relative to the extruding of the intermittent of hydraulic machinery, through actual count, the speed assembled comprehensively improves about 30%, but also eliminate the stochastic problems of tight fit tolerance, reduce the difficulty of assembling.
Further, plunger displacement pump of the present invention all can also use on the footstalk of bent axle both sides bearing inner race (5) and roller bearing (4) with the use of.
Claims (3)
1. a plunger displacement pump press-fits new technology, including plunger displacement pump, described plunger displacement pump includes the pump housing (6), a bent axle (7) is placed in the described pump housing (6), the two ends of bent axle (7) sequentially pass through from inside to outside with symmetry and are arranged on axis hole (6b set by the pump housing (6) both sides, bearing on 6a), bearing outer ring (3, 9), and gland flange (2, 11), the upper corresponding footstalk input (7a) of bent axle (7) other end footstalk (7b) the bearing of traverse include a bearing inner race (5) and activity is nested with the roller bearing (4) in bearing inner race (5) outside, it is characterized in that: plunger displacement pump press-fits new technology, step is as follows:
A, is nested with bearing inner race (5) on bent axle (7) footstalk (7b)；
B, roller bearing (4) is placed in the axis hole (6b) of the pump housing (6) side, to should hold footstalk gland flange (2) cap bore (2a) on be placed with bearing outer ring (3), then gland flange (2) by bolt (1) be fixed on the pump housing (6) axis hole (6b) outside；
C, overlaps upper ball bearing (8) by bent axle (7) other end footstalk input (7a)；
D, will be equipped with the footstalk of bearing inner race (5) and loads to the axis hole (6b) securing gland flange (2) from the axis hole (6a) of the pump housing (6)；
E, is inserted in bearing outer ring (9), sealing ring (10) and the gland flange (11) sealed by the pump housing (6) axis hole (6a) on bent axle (7) footstalk input (7a) more successively, then fixes with bolt (12).
2. plunger displacement pump according to claim 1 press-fits new technology, it is characterised in that: step a, step b and step c are convertible or are synchronously performed.
3. plunger displacement pump according to claim 1 press-fits new technology, it is characterised in that: in step b, gland flange (2) and bearing outer ring (3) can be installed by the step first filling bearing outer ring (3) stationary gland flange (2) equipped with the footstalk (7b) of bearing inner race (5) in bent axle described in step d (7) after the axis hole (6a) of the pump housing (6) more again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410229021.0A CN103982415B (en) | 2014-05-28 | 2014-05-28 | A kind of plunger displacement pump and press-fit new technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410229021.0A CN103982415B (en) | 2014-05-28 | 2014-05-28 | A kind of plunger displacement pump and press-fit new technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982415A CN103982415A (en) | 2014-08-13 |
| CN103982415B true CN103982415B (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410229021.0A Expired - Fee Related CN103982415B (en) | 2014-05-28 | 2014-05-28 | A kind of plunger displacement pump and press-fit new technology |
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| Country | Link |
|---|---|
| CN (1) | CN103982415B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403380A (en) * | 2008-11-11 | 2009-04-08 | 黄山泰安达机电科技有限公司 | Ultra-high pressure three-plunger pump |
| CN101608607A (en) * | 2009-07-03 | 2009-12-23 | 梁福根 | A kind of ultrahigh pressure plunger pump |
| CN201568283U (en) * | 2009-11-24 | 2010-09-01 | 上海凯泉泵业（集团）有限公司 | Crank shaft structure of high-pressure pump |
| JP2012002225A (en) * | 2010-06-21 | 2012-01-05 | Fives Cryomec Ag | Drive unit for piston pump |
| CN202300986U (en) * | 2011-10-31 | 2012-07-04 | 绿田机械股份有限公司 | High-pressure pump for connecting rod |
-
2014
- 2014-05-28 CN CN201410229021.0A patent/CN103982415B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403380A (en) * | 2008-11-11 | 2009-04-08 | 黄山泰安达机电科技有限公司 | Ultra-high pressure three-plunger pump |
| CN101608607A (en) * | 2009-07-03 | 2009-12-23 | 梁福根 | A kind of ultrahigh pressure plunger pump |
| CN201568283U (en) * | 2009-11-24 | 2010-09-01 | 上海凯泉泵业（集团）有限公司 | Crank shaft structure of high-pressure pump |
| JP2012002225A (en) * | 2010-06-21 | 2012-01-05 | Fives Cryomec Ag | Drive unit for piston pump |
| CN202300986U (en) * | 2011-10-31 | 2012-07-04 | 绿田机械股份有限公司 | High-pressure pump for connecting rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103982415A (en) | 2014-08-13 |
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Granted publication date: 20160629 Termination date: 20190528 |