CN106949028A - A kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap - Google Patents
A kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap Download PDFInfo
- Publication number
- CN106949028A CN106949028A CN201710350379.2A CN201710350379A CN106949028A CN 106949028 A CN106949028 A CN 106949028A CN 201710350379 A CN201710350379 A CN 201710350379A CN 106949028 A CN106949028 A CN 106949028A
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- CN
- China
- Prior art keywords
- ring set
- bearing
- pump case
- cylindrical
- endoporus
- Prior art date
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Classifications
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap, include pump case, the bent axle being arranged in pump case and be fixed on the logical lid of the bearing boring cover at pump case two, bearing, it is characterized in that being also surrounded by the first ring set being located between bearing boring cover and pump case, and it is located at the second ring set between the logical lid of bearing and pump case, and the cylindrical or endoporus of the first ring set, the second ring set is set to taper surface, the cylindrical cooperation with pump case endoporus or the logical lid of bearing boring cover, bearing.By setting up a ring set with taper surface between pump case and bearing (ball) cover; gap between the endoporus and bearing (ball) cover of pump case is coordinated and is changed to taper surface; dexterously the cylindrical radial clearance between pump case endoporus of bearing (ball) cover is eliminated using the axial movement of ring set; it is unique structure, simple; bearing (ball) cover is set not produce gap, play in bent axle operation; so as to protect fuselage to avoid it from ftractureing, extend the service life of bearing.
Description
Technical field
The present invention relates to reciprocating type plunger pump technical field, more particularly to a kind of Reciprocatin pump power end, solve
Bearing cap and the clearance issues at pump case (fuselage) cooperation.
Background technology
Reciprocating plunger pump belongs to one of displacement pump, its power end main composition part be bent axle, connecting rod, crosshead, in
Between bar, pump case (fuselage), bearing lead to lid, bearing boring cover, bearing etc. (such as Figure 10), in operation regardless of small-power, high-power
Reciprocating pump all there is a kind of gap when crankshaft bearing cap and pump case (fuselage) are assembled.Because bearing is in bearing cap
Hole, generally interference fits, the outer diameter of step of bearing cap and the inner hole of pump case (fuselage), generally gap coordinate, root
Fit-up gap is determined according to the size of pump bearing lid.Alternation stress can be produced when bent axle is moving stress, strength stress biography is respectively turned
It is the intersection point of alternation torque when passing on the bearing of two strong points, at the bearing (ball) cover at two ends and pump case (fuselage) cooperation.When
Pump prestowage power is in more than 250KW, and the device gap of bearing cap is>More than 0.1, not so dismounting will encounter difficulties, this
Unified technological requirement when being the bearing cap assembling of conventional reciprocating pump.
Because bearing cap leaves gap in assembling, when pump is run in stress, the alternation stress that power end bent axle is subject to
Gap during to be assembled to bearing cap and pump case (fuselage) produces discontinuity, especially to double-acting power end, due to
Bent axle is just occurred that the logical lid of bearing of bent axle, boring cover swing in the radial direction of bent axle, if assembly building by alternation stress
Gap is big, and radially wobbling for bent axle is more serious, so can also increase fuselage cracking, bearing wear, noise is increased, mechanical efficiency declines
Etc. factor.Especially to powerful reciprocating pump (630KW-1800KW), between eliminating at bearing cap and pump case (fuselage) cooperation
Gap is particularly important.
The content of the invention
The technical problems to be solved by the invention make bearing cap when being and passing to bearing cap for above-mentioned bent axle alternation stress
Fit-up gap become running clearance, the dynamic fit clearance that crankshaft bearing cap exists when coordinating with pump case (fuselage), and providing
One kind can eliminate the Reciprocatin pump power end of the radial clearance between crankshaft bearing cap and pump case (fuselage).
The present invention solve the technical scheme that is used of above-mentioned technical problem for：Originally radial clearance between crankshaft bearing cap can be eliminated
Reciprocatin pump power end, including：Pump case；Bent axle is arranged in pump case, and its two ends passes through clutch shaft bearing, bearing boring cover respectively
Lead to lid with second bearing, bearing to be rotatably connected in pump case；Described bearing boring cover and the logical lid of bearing respectively with pump case
Two end surfaces of body are mutually fixed；Its feature is being also to include the first ring set to be located between bearing boring cover and pump case, and the
Face at one ring set and pump case endoporus or the cylindrical cooperation of bearing boring cover is taper surface, corresponding described pump case endoporus be in
The internal taper hole that the taper surface matches, or described bearing boring cover are cylindrical in the male cone (strobilus masculinus) matched with the taper surface；Second
Ring set is located between the logical lid of bearing and pump case, and the second ring set and the face at pump case endoporus or the logical cylindrical cooperation of lid of bearing
For taper surface, the endoporus of corresponding described pump case is in the internal taper hole matched with the taper surface, or the described logical lid of bearing
It is cylindrical in the male cone (strobilus masculinus) matched with the taper surface.
Preferably, the cylindrical of the first ring set and the second ring set described in it is taper surface, respectively with described pump case
The internal taper hole hole at body two is adapted；The first described ring set and the endoporus of the second ring set are cylindrical hole, respectively with bearing
The cylindrical of the logical lid of boring cover and bearing cylindrical matches.The so cylindrical taper surface of ring set and pump case inner hole, ring set
Cylindrical bore coordinates with bearing boring cover and the logical lid of bearing, reaches between the logical lid of elimination bearing boring cover, bearing and pump case between radial direction
The purpose of gap.
The first ring set described in it can be realized with the second ring set by different structure and mounting means：First, described
The first ring set and the second ring set be that big end is located at corresponding pump case end face side, small end is towards pump case intracoelomic cavity；Described
Bearing boring cover and bearing lead to the bolt for covering and being respectively provided with and tightening first ring set and the second ring set.This programme is to utilize
The taper surface (big end outside, small end including) of ring set toward centerline direction axial movement eliminates bearing boring cover by pump case end face
Radial clearance between the logical lid of bearing and pump case.
Second, the first described ring set is that small end is located at corresponding pump case end face side with the second ring set, direction is held greatly
Pump case intracoelomic cavity, and the big end afterbody of the first ring set and the second ring set radially extends out to form a pump case inner chamber end face and match somebody with somebody respectively
Close and be respectively provided with the bolt for tightening first ring set and the second ring set on the step of positioning, two steps.This programme is
Using including the big end of ring set, the taper surface of small end outside eliminates by pump case center line is moved axially to pump case end face direction
Radial clearance between bearing boring cover and the logical lid of bearing and pump case.
It can act also as preferably, the first ring set and the cylindrical of the second ring set described in it are cylindrical surface, with pump case
Cylindrical bore is adapted；The first described ring set and the endoporus of the second ring set are bellmouth, vexed with described bearing respectively
The male cone (strobilus masculinus) of lid and the logical lid of bearing matches.The so cylindrical cylindrical surface of ring set and pump case inner hole, the taper of ring set
Endoporus coordinates with bearing boring cover and the logical lid of bearing, similarly reaches between the logical lid of elimination bearing boring cover, bearing and pump case between radial direction
The purpose of gap.
Preferably, the first above-mentioned ring set and the second ring set are respectively provided with a radial direction subdivision, so may further ensure that
Pump case holds the cylindrical of the logical lid of bearing boring cover, bearing tightly through ring set, and eliminates the purpose of radial clearance.
Compared with prior art, the advantage of the invention is that：By setting up a band cone between pump case and bearing (ball) cover
The ring set in shape face, the gap between the endoporus and bearing (ball) cover of pump case is coordinated and is changed to taper surface, the axle of ring set is dexterously utilized
Eliminate the cylindrical radial clearance between pump case endoporus of bearing (ball) cover to movement, it is unique structure, simple, make bearing (ball) cover in song
Gap, play will not be produced in axle operation, so as to protect fuselage to avoid it from ftractureing, extends the service life of bearing.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 be the embodiment of the present invention one in pump case structural representation.
Fig. 3 be the embodiment of the present invention one in first and second ring set structural representation.
Fig. 4 is Fig. 3 left view.
Fig. 5 is the structural representation of the embodiment of the present invention two.
Fig. 6 be the embodiment of the present invention two in pump case structural representation.
Fig. 7 be the embodiment of the present invention two in first and second ring set structural representation.
Fig. 8 is Fig. 7 left view.
Fig. 9 is the structural representation of the embodiment of the present invention three.
Figure 10 is the structural representation of existing Reciprocatin pump power end.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
The present invention changes the fit structure between traditional bearing end cap and pump case (fuselage) endoporus, is changed to that gap can be adjusted
Fit structure, the fit-up gap of bearing (ball) cover is become between operation when bent axle alternation stress passes to axle hubcap to eliminate
The dynamic fit clearance existed when gap, bearing (ball) cover and pump case cooperation.
Embodiment one：The first ring set 3a of the present embodiment, the second ring set 3b are to match somebody with somebody with the endoporus of pump case 4 for taper surface
Close, ring set eliminates gap from pump case end face toward center line (inner chamber axial direction centre position) axial movement.
Specifically as shown in figure 1, this Reciprocatin pump power end includes pump case 4 (fuselage), the bent axle in pump case 4
1st, connecting rod, crosshead, intermediate bar etc., the wherein two ends of bent axle 1 respectively by clutch shaft bearing, bearing boring cover 2a and second bearing,
The logical lid 2b of bearing is rotatably connected in pump case 4, and in bearing boring cover 2a, the logical lid 2b of bearing and the two of pump case 4
The first ring set 3a and the second ring set 3b are respectively equipped between hole.
In conjunction with shown in 3, Fig. 2, the first ring set 3a, the cylindrical of the second ring set 3b are taper surface 31a, are engaged with them
The endoporus at pump case two be internal taper hole (endoporus is taper) 41a, 41b, can be by there is self locking taper as the taper of taper surface
Taper configured；First ring set 3a, the second ring set 3b endoporus are cylindrical hole, the bearing boring cover being engaged with it
To be cylinder cylindrical for the logical lid 2b of 2a, bearing cylindrical.Such first ring set 3a, the second ring set 3b are held towards correspondence with big respectively
Pump case end face side, small end towards pump case intracoelomic cavity mounted in the endoporus of pump case 4 and bearing boring cover 2a, bearing it is logical cover 2b it
Between, their taper surface 31a is engaged with internal taper hole 41a, 41b of pump case respectively, cylindrical bore respectively with bearing boring cover
The logical lid 2b of 2a, bearing cylindrical cooperation, and be respectively arranged with the logical lid 2b of bearing boring cover 2a, bearing it is several bolt on 5, can push up respectively
Firmly two ring sets make them be moved toward centerline direction.The logical lid 2b of bearing boring cover 2a, bearing is each via being bolted to pump case 4
On the end face at two.
Thus the radial clearance between the logical lid 2b of bearing boring cover 2a, bearing and pump case 4 can be entered by the taper surface 31a of two ring sets
Row is eliminated, because the endoporus of pump case is internal taper hole 41a, 41b, and it is gradually contracted from pump case end face toward center line (by outside inside)
Small, first, second ring set 3a, 3b 5 can be moved axially by bolting on from the end face of pump case 4 toward center line, and to being close to axle
Hold boring cover 2a, logical lid 2b cylindrical just can reach eliminates bearing boring cover, the logical purpose for covering the radial clearance between pump case, so that
The logical lid 2b of bearing, bearing boring cover 2a do not produce gap, play in the operation of bent axle 1, so as to protect the cracking of fuselage, extending shaft
The life-span held.
Other first ring set 3a, the second ring set 3b are a non-closed ring, have at a radial direction subdivision 32a (such as Fig. 4 institutes
Show), so may further ensure that ring set along pump case endoporus move axially when toward contract come hold tightly bearing boring cover, bearing lead to
The cylindrical progress of lid eliminates the purpose of radial clearance.And the first ring set 3a, the second ring set 3b it is cylindrical on further respectively have ring
Connected in star 33, can be used to set O-ring seal.
Embodiment two：As shown in figure 5, first, second ring set 3a, 3b is also to use the endoporus with pump case 4 with taper surface
The mode of cooperation, but from unlike embodiment one conical surface towards with embodiment one on the contrary, i.e. including taper surface 31b big end,
Small end outwardly, gap is eliminated by two ring sets are moved axially from the center line of pump case 4 outward.
With reference to shown in Fig. 6, Fig. 7, the endoporus at the two of pump case 4 is internal taper hole 42a, 42b, and the big end of internal taper hole is positioned at interior
Chamber side, small end is towards end face.Accordingly, the first ring set, second ring set 3a, 3b big end also be located in pump case intracoelomic cavity, small end
The end face side of pump case, and hold afterbody radially to extend out greatly outwardly, forms one and coordinates with pump case intracoelomic cavity two end face respectively
The annular step 34 of positioning, and be circumferentially evenly equipped with step 34 and several bolt on 6.
So, the internal taper holes of the first ring set 3a and the second ring set 3b cylindrical taper surface 31b respectively with pump case two
42a, 42b are engaged, the cylindrical cylindrical cooperation of cylindrical bore respectively with bearing boring cover 2a, the logical lid 2b of bearing, and are distinguished
Be clipped in the logical lid 2b of pump case internal taper hole 42a, 42b and bearing boring cover 2a, bearing it is cylindrical it is cylindrical between, the big end tail of two ring sets
The annular step 34 in portion coordinates spacing with two end surfaces of pump case intracoelomic cavity respectively, and by tightening spiral shell on respective step
Bolt 6 and realize the axial movement of ring set from inside to outside.Endoporus reduces when moving from inside to outside leads to eliminate bearing boring cover 2a, bearing
Cover 2b radial clearance.Other first ring set 3a, the second ring set 3b also be the same as Example one, radial direction subdivision 32b is (such as Fig. 8 institutes
Show).
Embodiment three：Cylinder is designed to from the first ring set 3a unlike above-mentioned two embodiment and the second the cylindrical of ring set 3b
Shape face, coordinates with the cylindrical bore of pump case 4, and by the first ring set 3a, the second ring set 3b tapered hole of bore design, phase
The cylindrical of the logical lid 2b of the bearing boring cover 2a that answers, bearing is designed to male cone (strobilus masculinus) (cylindrical is taper surface) and the first ring set, the second ring set
Bellmouth be engaged.
It is specific as shown in figure 9, the endoporus at the two of pump case 4 still keeps traditional cylindrical hole, and bearing boring cover 2a, bearing
The logical lid 2b cylindrical male cone (strobilus masculinus) for being designed to big end outside (towards pump case end face side), including small end (towards pump case lumen side).
Accordingly, the first ring set 3a, the second ring set 3b cylindrical cylinder for being designed to be adapted with the cylindrical bore of pump case 4
Face, and including bore design Cheng great Duan, the bellmouth of small end outside, and greatly end afterbody radially extend out, respectively formed one with
Pump case intracoelomic cavity two end face coordinates the annular step of positioning, and several bolt on circumferentially is evenly equipped with step.
So, the first ring set 3a and the second ring set 3b cylindrical cylindrical cylindrical bore respectively with the two of pump case 4
It is engaged, male cone (strobilus masculinus) of the cone-shaped inner hole respectively with bearing boring cover 2a, the logical lid 2b of bearing is engaged, and is clipped in pump case respectively
Between cylindrical bore and the logical lid 2b of bearing boring cover 2a, bearing male cone (strobilus masculinus), the annular platform of two ring set 3a, 3b big end afterbody
Rank coordinates spacing with two end surfaces of the inner chamber of pump case 4 respectively, and by bolting on 6 and realize ring set on respective step
Axial movement from inside to outside, the mesh for eliminating radial clearance between the logical lid 2b of bearing boring cover 2a, bearing and pump case 4 is also reached from face
's.Other first ring set 3a, the second ring set 3b also be the same as Example one, two, radial direction subdivision.
In addition to above-described embodiment, the present invention can also make other remodeling, and not limited to this.
Claims (7)
1. a kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap, including：
Pump case；
Bent axle is arranged in pump case, and its two ends leads to Gai Kezhuan by clutch shaft bearing, bearing boring cover and second bearing, bearing respectively
It is connected to dynamicly in pump case；The logical lid of described bearing boring cover and bearing is mutually fixed with the end face of pump case two respectively；
It is characterized in that：Also include
First ring set is located between bearing boring cover and pump case, and the first ring set and pump case endoporus or bearing boring cover is cylindrical matches somebody with somebody
Face at conjunction is taper surface, and the endoporus of corresponding described pump case is in the internal taper hole matched with the taper surface, or described
Bearing boring cover it is cylindrical in the male cone (strobilus masculinus) matched with the taper surface；
Second ring set is located between the logical lid of bearing and pump case, and the second ring set with pump case endoporus or bearing are logical covers cylindrical match somebody with somebody
Face at conjunction is taper surface, and the endoporus of corresponding described pump case is in the internal taper hole matched with the taper surface, or described
Bearing leads to the cylindrical in the male cone (strobilus masculinus) matched with the taper surface of lid.
2. Reciprocatin pump power end as claimed in claim 1, it is characterised in that：The first described ring set is cylindrical with the second ring set
Taper surface is, the internal taper hole with described pump case two is adapted respectively；Described the first ring set and the second ring set
Endoporus is cylindrical hole, cylindrical matches with the cylindrical of the logical lid of bearing boring cover and bearing respectively.
3. Reciprocatin pump power end as claimed in claim 1, it is characterised in that：The first described ring set is cylindrical with the second ring set
Cylindrical surface is, is adapted with the cylindrical bore at pump case two；The endoporus of described the first ring set and the second ring set is equal
For bellmouth, match respectively with described bearing boring cover and the logical male cone (strobilus masculinus) covered of bearing.
4. the Reciprocatin pump power end as described in claim 1 or 2 or 3, it is characterised in that：Described the first ring set and the second ring set
It is respectively provided with a radial direction subdivision.
5. Reciprocatin pump power end as claimed in claim 2, it is characterised in that：The first described ring set is big with the second ring set
End is located at corresponding pump case end face side, and small end is towards pump case intracoelomic cavity；Described bearing boring cover and logical cover of bearing set respectively
There is the bolt for tightening first ring set and the second ring set.
6. Reciprocatin pump power end as claimed in claim 2, it is characterised in that：The first described ring set is small with the second ring set
End is towards corresponding pump case end face side, and big end is located at pump case intracoelomic cavity, and the big end afterbody of the first ring set and the second ring set
Radially extend out respectively and to form one and coordinate the step of positioning with pump case inner chamber end face, and be respectively provided with and tighten on two steps
The bolt of first ring set and the second ring set.
7. Reciprocatin pump power end as claimed in claim 3, it is characterised in that：The first described ring set is small with the second ring set
End is towards corresponding pump case end face side, and big end is located at pump case intracoelomic cavity, and the big end afterbody of the first ring set and the second ring set
Radially extend out respectively and to form one and coordinate the step of positioning with pump case inner chamber end face, and be respectively provided with and tighten on two steps
The bolt of first ring set and the second ring set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350379.2A CN106949028A (en) | 2017-05-18 | 2017-05-18 | A kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350379.2A CN106949028A (en) | 2017-05-18 | 2017-05-18 | A kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106949028A true CN106949028A (en) | 2017-07-14 |
Family
ID=59478832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710350379.2A Pending CN106949028A (en) | 2017-05-18 | 2017-05-18 | A kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106949028A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6623259B1 (en) * | 2002-05-06 | 2003-09-23 | George H. Blume | High pressure plunger pump housing and packing |
| CN102486173A (en) * | 2010-12-03 | 2012-06-06 | 山东双轮股份有限公司 | Coupling device for liquid 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 |
| CN104214084A (en) * | 2013-06-04 | 2014-12-17 | 天津爱博生技术开发有限公司 | Valve of plunger pump |
| JP2015200209A (en) * | 2014-04-07 | 2015-11-12 | 株式会社丸山製作所 | Reciprocation pump |
| CN106481540A (en) * | 2016-12-07 | 2017-03-08 | 宁波合力机泵股份有限公司 | A kind of power end of plunger pump |
| CN206694202U (en) * | 2017-05-18 | 2017-12-01 | 宁波合力机泵股份有限公司 | A kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap |
-
2017
- 2017-05-18 CN CN201710350379.2A patent/CN106949028A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6623259B1 (en) * | 2002-05-06 | 2003-09-23 | George H. Blume | High pressure plunger pump housing and packing |
| CN102486173A (en) * | 2010-12-03 | 2012-06-06 | 山东双轮股份有限公司 | Coupling device for liquid 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 |
| CN104214084A (en) * | 2013-06-04 | 2014-12-17 | 天津爱博生技术开发有限公司 | Valve of plunger pump |
| JP2015200209A (en) * | 2014-04-07 | 2015-11-12 | 株式会社丸山製作所 | Reciprocation pump |
| CN106481540A (en) * | 2016-12-07 | 2017-03-08 | 宁波合力机泵股份有限公司 | A kind of power end of plunger pump |
| CN206694202U (en) * | 2017-05-18 | 2017-12-01 | 宁波合力机泵股份有限公司 | A kind of Reciprocatin pump power end for eliminating radial clearance between crankshaft bearing cap |
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Application publication date: 20170714 |
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