CN109026607A - Piston rod part and compressor with it - Google Patents
Piston rod part and compressor with it Download PDFInfo
- Publication number
- CN109026607A CN109026607A CN201811162100.9A CN201811162100A CN109026607A CN 109026607 A CN109026607 A CN 109026607A CN 201811162100 A CN201811162100 A CN 201811162100A CN 109026607 A CN109026607 A CN 109026607A
- Authority
- CN
- China
- Prior art keywords
- connecting hole
- bushing
- hole
- piston rod
- rod part
- Prior art date
- 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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- 239000000446 fuel Substances 0.000 claims description 20
- 239000011324 bead Substances 0.000 claims description 10
- 230000014759 maintenance of location Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 75
- 239000010687 lubricating oil Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000005461 lubrication Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000004642 Polyimide Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 229920001721 polyimide Polymers 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
- F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
Abstract
The present invention provides a kind of piston rod part and with its compressor.The piston rod part includes connecting rod, interconnecting piece and bushing, and connecting rod has connecting hole, and interconnecting piece is arranged in connecting hole, bushing is rotatably penetrated and arranged in connecting hole, bushing is rotationally sheathed on interconnecting piece, and when interconnecting piece rotates in connecting hole, bushing can be rotated relative to connecting rod and interconnecting piece.By the way that bushing is arranged in the connecting hole of connecting rod, bushing is sheathed on the outer surface of interconnecting piece, when interconnecting piece rotates in connecting hole, bushing is relatively rotated with connecting hole and interconnecting piece, the relative motion linear velocity for reducing the friction pair of piston rod part is set in this way, viscous loss and temperature rise are reduced, the performance and service life of compressor are improved.
Description
Technical field
The present invention relates to compressor apparatus technical field, in particular to a kind of piston rod part and with its
Compressor.
Background technique
In the prior art, the actuation high speed of small-sized reciprocating compressor is conducive to body miniaturization, quality lightness, simultaneously
Advantageously reduce production cost.However, the high-speed cruising of small-sized reciprocating compressor increases compressor shaft bearing portion linear velocity, into
And the speed of related movement of lubricating oil film increases, and oil-film viscous loss is caused to increase, and declines overall performance；The interior friction of oil film
It is converted into temperature rise, bearing portion temperature rise increases, and increases the risk of lubricating oil oil property deterioration.In addition, because of inertia force and axis
Revolving speed square is directly proportional, and the inertia force of moving parts is caused to increase.Also, reciprocal inertia force is difficult to be balanced, and then causes whole
The problems such as machine vibration, noise or even compressor service life shorten.
Summary of the invention
The main purpose of the present invention is to provide a kind of piston rod part and with its compressor, to solve existing skill
In art because bearing portion linear velocity is big to be caused reduced performance, temperature rise excessively high and influence assembled machine balance the problem of.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of piston rod part, comprising: even
Bar, connecting rod have connecting hole；Interconnecting piece, interconnecting piece are arranged in connecting hole；Bushing, bushing are rotatably penetrated and arranged in connecting hole
Interior, bushing is rotationally sheathed on interconnecting piece, and when interconnecting piece rotates in connecting hole, bushing can be with respect to connecting rod and interconnecting piece
Rotation.
Further, connecting hole be it is multiple, interconnecting piece be it is multiple, multiple interconnecting pieces are set correspondingly with multiple connecting holes
It sets, multiple connecting holes include: the first connecting hole, and the first connecting hole is set to the first end of connecting rod；Second connecting hole, the second connection
Hole is set to the second end of connecting rod, and bushing includes the first bushing, and the first bushing is rotatablely arranged in the first connecting hole, and/
Or, bushing includes the second bushing, the second bushing is rotatablely arranged in the second connecting hole.
Further, multiple interconnecting pieces include: piston pin, and piston pin is arranged in the first connecting hole, one end of piston pin
Fuel feed hole is offered, fuel feed hole is extended along the axis direction of piston pin, and the outer peripheral surface of piston pin offers at least one and goes out
Oilhole, oil outlet are arranged with being connected with fuel feed hole.
Further, fuel feed hole is blind hole, oil outlet be it is multiple, multiple oil outlets are arranged with being connected with fuel feed hole,
Multiple oil outlets are evenly distributed along the circumferential direction of piston pin.
Further, multiple interconnecting pieces include: crankshaft, and one end of crankshaft is provided with crank, and crank is arranged in the second connection
In hole, the outer peripheral surface of crank offers crank oil groove.
Further, at least one oil-through-hole, appearance of the oil-through-hole from the inner surface of bushing to bushing are offered on bushing
Face is penetratingly arranged.
Further, oil-through-hole is multiple, and multiple oil-through-holes are equably arranged along the circumferential direction of bushing.
Further, piston rod part further includes piston, and connecting rod is connected by piston pin with piston, bushing, piston,
At least one of connecting rod can be made of plastic material.
Further, the revolving speed of interconnecting piece is W1, and the revolving speed of bushing is W2,0.2≤W2/W1≤0.8.
Further, bushing includes: bush body, and bush body is tubular structure；Limiting section, limiting section and bush body
The end face of one end be connected and extend outwardly setting along the radial direction of bush body.
Further, limiting section is retention bead, and retention bead is multiple, circumferential direction of multiple retention beads along bush body
It is positioned apart from, alternatively, limiting section is annular flange.
Further, oil guide groove, oil guide groove edge are offered on the inner surface of at least one connecting hole in multiple connecting holes
The axis direction of connecting hole is extended, and the development length of oil guide groove is less than the length of connecting hole.
Further, oil guide groove is multiple, and multiple oil guide grooves are evenly distributed along the circumferential direction of connecting hole.
Further, at least one of multiple oil guide grooves extend spirally setting along the axis direction of connecting hole.
Further, the molded line of the cross section of at least one connecting hole in multiple connecting holes is ellipse, elliptical short axle
Parallel with the axis of connecting rod, connecting hole is for installing elliptic bearing.
According to another aspect of the present invention, a kind of piston rod part is provided, comprising: connecting rod, connecting rod have multiple companies
Connect hole；Oil guide groove, axis of the oil guide groove along connecting hole are offered on the inner surface of at least one connecting hole in multiple connecting holes
Direction is extended, and the development length of oil guide groove is less than the length of connecting hole.
Further, oil guide groove is multiple, and multiple oil guide grooves are evenly distributed along the circumferential direction of connecting hole.
According to another aspect of the present invention, a kind of piston rod part is provided, comprising: connecting rod, connecting rod have multiple companies
Connect hole；Offer oil guide groove on the inner surface of at least one connecting hole in multiple connecting holes, the first end of oil guide groove is from connection
The first end in hole along connecting hole hole wall gradually spiral to connecting hole second end.
According to another aspect of the present invention, a kind of piston rod part is provided, comprising: connecting rod, connecting rod have multiple companies
Connect hole；The molded line of the cross section of at least one connecting hole in multiple connecting holes is ellipse, the axis of elliptical short axle and connecting rod
In parallel, connecting hole is for installing elliptic bearing.
According to another aspect of the present invention, a kind of compressor, including piston rod part are provided, piston rod part is
Above-mentioned piston rod part.
It applies the technical scheme of the present invention, by the way that bushing is arranged in the connecting hole of connecting rod, bushing is sheathed on interconnecting piece
On outer surface, when interconnecting piece rotates in connecting hole, bushing is relatively rotated with connecting hole and interconnecting piece, and setting in this way reduces
The secondary relative motion linear velocity of the friction of piston rod part, thereby reduces viscous loss and temperature rise, improves compressor
Performance and service life.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the configuration schematic diagram of the embodiment one of piston rod part according to the present invention；
Fig. 2 shows the schematic cross-sectional views of the embodiment two of piston rod part according to the present invention；
Fig. 3 shows the structural schematic diagram of the embodiment three of piston rod part according to the present invention；
Fig. 4 shows the structural schematic diagram of the embodiment one of the bushing of piston rod part according to the present invention；
Fig. 5 shows the structural schematic diagram of the embodiment two of the bushing of piston rod part according to the present invention；
Fig. 6 shows the structural schematic diagram of the embodiment one of the connecting rod of piston rod part according to the present invention；
Fig. 7 shows the structural schematic diagram of the embodiment two of the connecting rod of piston rod part according to the present invention；
Fig. 8 shows the structural schematic diagram of the embodiment three of the connecting rod of piston rod part according to the present invention；
Fig. 9 shows the structural schematic diagram of the example IV of the connecting rod of piston rod part according to the present invention；
Figure 10 shows the structural schematic diagram of the embodiment five of the connecting rod of piston rod part according to the present invention；
Figure 11 shows the configuration schematic diagram of piston rod part in the prior art.
Wherein, the above drawings include the following reference numerals:
10, connecting rod；11, the first connecting hole；12, the second connecting hole；13, oil guide groove；
20, interconnecting piece；21, piston pin；211, fuel feed hole；212, oil outlet；22, crankshaft；221, crank；2211, crank
Oil groove；
30, bushing；31, oil-through-hole；32, bush body；33, limiting section；
40, piston；41, piston positioning pin.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be noted that term " first ", " second " etc. in the description and claims of this application and attached drawing
It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the art used in this way
Language is interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary
Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown
The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand
The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them
It states.
In conjunction with shown in Fig. 1 to Figure 10, according to an embodiment of the invention, providing a kind of piston rod part.
Specifically, as shown in Figure 1, the piston rod part includes connecting rod 10, interconnecting piece 20 and bushing 30, connecting rod 10 has
Connecting hole, interconnecting piece 20 are arranged in connecting hole, and bushing 30 is rotatably penetrated and arranged in connecting hole, and bushing 30 is rotationally arranged
In on interconnecting piece 20, when interconnecting piece 20 rotates in connecting hole, bushing 30 can be rotated relative to connecting rod 10 and interconnecting piece 20.
In the present embodiment, by the way that bushing is arranged in the connecting hole of connecting rod, bushing is sheathed on the outer surface of interconnecting piece,
When interconnecting piece rotates in connecting hole, bushing is relatively rotated with connecting hole and interconnecting piece, reduces work by the way that bushing is arranged
The secondary relative motion linear velocity of the friction of link assembly is filled in, viscous loss and temperature rise is thereby reduced, improves the height of compressor
Fast stability and service life.
In the present embodiment, connecting hole is multiple, interconnecting piece 20 be it is multiple, multiple interconnecting pieces 20 with multiple connecting holes one by one
It is arranged in correspondence with, multiple connecting holes include the first connecting hole 11 and the second connecting hole 12, and the first connecting hole 11 is set to connecting rod 10
First end, the second connecting hole 12 is set to the second end of connecting rod 10, and bushing 30 includes the first bushing, and the first bushing is rotationally
It is set in the first connecting hole 11, bushing 30 includes the second bushing, and the second bushing is rotatablely arranged in the second connecting hole 12.
Certainly, the two can also exist simultaneously.The relative motion linear velocity for reducing the friction pair of piston rod part is set in this way,
Viscous loss is thereby reduced, the performance and service life of compressor are improved.
As shown in Fig. 2, multiple interconnecting pieces 20 include piston pin 21, piston pin 21 is arranged in the first connecting hole 11, piston
One end of pin 21 offers fuel feed hole 211, and fuel feed hole 211 is extended along the axis direction of piston pin 21, outside piston pin 21
Circumferential surface offers at least one oil outlet 212, and oil outlet 212 is arranged with being connected with fuel feed hole 211.It is thrown away by crankshaft crank
Lubricating oil flows into fuel feed hole 211, and with the reciprocally swinging of connecting rod 10, lubricating oil flows into bushing 30 and piston by oil outlet 212
Between the bearing clearance of pin, the lubricant effect for improving lubricating oil is set in this way, reduces inertia force, improves the height of compressor
Fast stability and service life.
As shown in Fig. 2, fuel feed hole 211 be blind hole, oil outlet 212 be it is multiple, multiple oil outlets 212 with fuel feed hole 211
It is arranged with being connected, multiple oil outlets 212 are evenly distributed along the circumferential direction of piston pin 21.Fuel feed hole 211 is blind hole, lateral oilhole
The quantity of a i.e. oil outlet 212 can be arranged in uniform way for 1 to 4, it is preferable that the center of fuel feed hole 211 is located at the first connecting hole 11
Axial centre.Setting is flowed between bushing 30 and the bearing clearance of piston pin convenient for lubricating oil by multiple oil outlets 212 in this way,
The lubricant effect for improving lubricating oil is set in this way, reduces inertia force, improve the high stability of compressor and uses the longevity
Life.
As shown in figure 3, multiple interconnecting pieces 20 include crankshaft 22, one end of crankshaft 22 is provided with crank 221, and crank 221 is worn
In the second connecting hole 12, the outer peripheral surface of crank 221 offers crank oil groove 2211.Crank oil groove 2211 is for draining lubrication
Oil.
As shown in Figure 4 and Figure 5, offer at least one oil-through-hole 31 on bushing 30, oil-through-hole 31 by bushing 30 interior table
Outer surface towards bushing 30 is penetratingly arranged.Preferably, the position of oil-through-hole 31 is bearing friction countershaft to center.In this way
It is arranged convenient for improving the Oil Guide effect and oil storage effect of bushing 30 itself.The lubricant effect for improving lubricating oil is set in this way, is mentioned
The high performance and service life of compressor.
Further, oil-through-hole 31 is multiple, and multiple oil-through-holes 31 are equably arranged along the circumferential direction of bushing 30.It is arranged in this way
Convenient for improving the Oil Guide effect and oil storage effect of bushing 30 itself.The lubricant effect for improving lubricating oil is set in this way, is improved
The high stability and service life of compressor.
In the present embodiment, piston rod part further includes piston 40, and connecting rod 10 is connected by piston pin 21 with piston 40
Connect, piston pin 21 is fastened on piston 40 by piston positioning pin 41, at least one of bushing 30, piston 40, connecting rod 10 by
Plastic material is made.Preferably, plastic material is polyimides, and bushing 30 is made of polyimides and Wear-resistant, high-temperature resistant while can rub
It is low to wipe coefficient, is conducive to reducing power consumption and vibration and noise reducing.Bushing 30 or piston 40 or connecting rod 10 use engineering material polyimides, can
Reduce frictional dissipation while reducing reciprocal inertia force, reduce complete machine oscillation, improve compressor high stability and
Service life.
In the present embodiment, the revolving speed of interconnecting piece 20 is W1, and the revolving speed of bushing 30 is W2,0.2≤W2/W1≤0.8.Crank
Or the revolving speed of piston pin 21 is w1, it is straight inside and outside bushing 30 revolving speed w2, rotating ratio n, n=w2/w1, n and speed of crankshaft, bushing
Diameter, gap, bearing fit width are related.Rotating ratio n is between 0.2 to 0.8, preferably n=0.5, and radial friction pair is relatively former
Single bearing saves the sticky power consumption of about half.
As shown in Figure 4 and Figure 5, bushing 30 includes bush body 32 and limiting section 33, and bush body 32 is tubular structure, limit
Position portion 33 is connected with the end face of one end of bush body 32 and extends outwardly setting along the radial direction of bush body 32.In this way
It is arranged and is abutted against convenient for bushing 30 by limiting section 33 and the end face of the connection hole of connecting rod, prevents the axial string of bush body 32
It is dynamic, vibration is reduced, the performance and service life of compressor are improved.
In the present embodiment, limiting section 33 be retention bead, retention bead be it is multiple, multiple retention beads are along bush body
32 it is arranged circumferentially spaced, alternatively, limiting section 33 be annular flange.Retention bead can for shape can be used rectangle, it is trapezoidal,
Circle, in this way setting are abutted against convenient for bushing 30 by limiting section 33 and the end face of the connection hole of connecting rod, and bush body is prevented
32 axial motion.
As shown in Figure 6 and Figure 7, oil guide groove 13 is offered on the inner surface of at least one connecting hole in multiple connecting holes,
Oil guide groove 13 is extended along the axis direction of connecting hole, and the development length of oil guide groove 13 is less than the length of connecting hole.Work as Oil Guide
When the development length of slot 13 is less than the length of connecting hole, oil guide groove 13 and sleeve outer surface are cooperatively formed as shallow cavity structure, certainly
The depth of oil guide groove 13 can also with the equal length of connecting hole, by setting oil guide groove 13 to not through connecting hole both ends
Shallow cavity increases flow of lubrication, improves the cooling capacity of lubricating oil.
In the present embodiment, oil guide groove 13 is multiple, and multiple oil guide grooves 13 are evenly distributed along the circumferential direction of connecting hole.Its
In, the oil guide groove 13 of part can run through the both ends of connecting hole, and the oil guide groove 13 of part is formed not through the shallow of connecting hole both ends
Chamber, in this way setting increase flow of lubrication, improve the cooling capacity of lubricating oil.
As shown in Figure 10, at least one of multiple oil guide grooves 13 extend spirally setting along the axis direction of connecting hole.This
Sample is arranged so that flow of lubrication is big and oil film temperature rise is small, and high stability is good.
As shown in figure 9, the molded line of the cross section of at least one connecting hole in multiple connecting holes is ellipse, elliptical short axle
Parallel with the axis of connecting rod 10, connecting hole is for installing elliptic bearing.Preferably, elliptical ratio of semi-minor axis length be 1 to 2 between,
Elliptic bearing oil stream amount is big, and temperature rise is low, and running accuracy and high stability are good, and technique is simpler.Elliptical aperture long axis direction with go out
212 pairs of oilhole it is corresponding when flow of lubrication it is larger, cooling effect is obvious, reduces inertia force, improves the performance of compressor and makes
Use the service life.
According to another aspect of the present invention, a kind of piston rod part, including connecting rod 10 are provided, connecting rod 10 has multiple
Connecting hole offers oil guide groove 13 on the inner surface of at least one connecting hole in multiple connecting holes, and oil guide groove 13 is along connecting hole
Axis direction be extended, the development length of oil guide groove 13 is less than the length of connecting hole, and connecting rod 10 is monoblock type connecting rod, connecting rod
10 connecting hole is directly used in installation interconnecting piece.When the development length of oil guide groove 13 is less than the length of connecting hole, oil guide groove 13
It cooperatively forms with the outer surface of interconnecting piece 20 as shallow cavity structure, by setting oil guide groove 13 to not through the shallow of connecting hole both ends
Chamber increases flow of lubrication, improves the cooling capacity of lubricating oil.Further, oil guide groove 13 is multiple, multiple oil guide grooves
13 are evenly distributed along the circumferential direction of connecting hole.Partial oil guide groove 13 can run through the both ends of connecting hole, 13 shape of oil guide groove of part
At the shallow cavity not through connecting hole both ends, setting in this way increases flow of lubrication, improves the cooling capacity of lubricating oil.
According to another aspect of the present invention, a kind of piston rod part, including connecting rod 10 are provided, connecting rod 10 has multiple
Connecting hole；Oil guide groove 13, the first end of oil guide groove 13 are offered on the inner surface of at least one connecting hole in multiple connecting holes
From the first end of connecting hole along connecting hole hole wall gradually spiral to connecting hole second end.Connecting rod 10 is monoblock type connecting rod, even
The connecting hole of bar 10 is directly used in installation interconnecting piece.So that flow of lubrication is big and oil film temperature rise is small, high speed is stablized for setting in this way
Property is good.
According to another aspect of the present invention, a kind of piston rod part, including connecting rod 10 are provided, connecting rod 10 has multiple
Connecting hole；The molded line of the cross section of at least one connecting hole in multiple connecting holes is ellipse, elliptical short axle and connecting rod 10
Axis is parallel, and connecting hole is for installing elliptic bearing.Connecting rod 10 is monoblock type connecting rod, and the connecting hole of connecting rod 10 is directly used in installation
Interconnecting piece.Preferably, elliptical ratio of semi-minor axis length is between 1 to 2, and elliptic bearing oil stream amount is big, and temperature rise is low, running accuracy and height
Fast stability is good, and technique is simpler.Flow of lubrication is larger when elliptical aperture long axis direction is corresponding with 212 pairs of oil outlet, cooling effect
Obviously.
According to another aspect of the present invention, a kind of compressor, including piston rod part are provided, piston rod part is
Piston rod part in above-described embodiment.
As shown in figure 11, in the prior art, piston rod part connects piston pin 4 by the small end of connecting rod 2 of connecting rod 1, and leads to
Elastic positioning pin 6 is crossed to be fixed in piston pin hole 9 by piston location hole 5 and the flexibly positioned pin hole 8 of piston.Piston 7 and connecting rod 1 are equal
For metallic sintered products, density ratio plastic part is big, has biggish inertia force when high-speed cruising, while intensity is smaller；Connecting rod and work
Plug pin has opposite swing speed, and big end 3 and crank position relative rotation, sticky power consumption are proportional to revolving speed square, high speed
When operation, connecting rod concentric reducer kinematic pair viscous loss is greatly increased, and oil film temperature rise at the same time increases.Miniature high-speed piston
Machine, conventional piston link mechanism face performance and many potential problems of reliability.
In the present embodiment, the second connecting hole of connecting rod of piston rod part and bushing cooperate, the first connecting hole 11 and lining
30 cooperation of set, the bushing and 21 clearance fit of piston pin of the first connecting hole 11, piston pin 21 are fixed on work by piston positioning pin 41
In the pin hole of plug 40.The fit system of connecting rod 10 and bushing 30 can be gap and interference.Lagging material can be metalwork such as powder
Last metallurgy part or high performance engineering plastics part such as polyimides etc., have relatively small hardness.The first end of connecting rod supports
In the inner hole lower end plane of piston 40, the bushing lower end of connecting rod second end is supported in crankshaft pair balance weight upper surface.Interference fit
When, special material such as polyimides can be used in bushing, and coefficient of friction is low simultaneously for Wear-resistant, high-temperature resistant, is conducive to reducing power consumption and vibration damping drop
It makes an uproar.Piston 40 uses engineering material polyimides, can reduce frictional dissipation while reducing reciprocal inertia force.
In the present embodiment, the crank 221 of crankshaft 22 and the sleeve clearances of connecting rod second end cooperate, meanwhile, connecting rod second
The bushing and the second connecting hole of connecting rod at end cooperate.The bushing of connecting rod second end is supported on crankshaft pair balance weight upper surface.Bushing
With the second connecting hole clearance fit, connecting rod first end sleeve surface arranges that aperture, aperture can be 1 or 2 to 8 uniform cloth
It sets, small empty position is that bearing friction countershaft to center is best, but is not limited to hit exactly.In operation, by crank oil groove 2211
Bearing fuel feeding of the lubricating oil diameter uniform bore to bushing and connecting hole.When assembly, the upper surface of the bushing of connecting rod second end and connecting rod
The upper surface of second end is concordantly considered as most preferably, can also be higher by 1mm to 3mm, but crank oil groove 2211 can not be completely covered, otherwise can
Large effect crankshaft gets rid of oil circuit footpath.The bushing of connecting rod second end is interference fitted using light plastic part and with the second connecting hole,
The sleeve surface of connecting rod second end is without arranging aperture.
In the present embodiment, connecting rod is monoblock type connecting rod, and connecting rod second end arranges vertical oil groove, and oil groove quantity is evenly arranged
Several, such as 2 to 12, connecting rod first end arranges shallow cavity, and quantity 1 to 8, shallow cavity can also be a plurality of circumferencial direction oil groove, has
High stability is good while oil storage acts on, and big end can also be shallow cavity.The shape of shallow cavity is not limited to rectangle, can also be ladder
Shape or zigzag.
Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation
Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary
Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description
Apply example.Furthermore, it is understood that is advocated is knot when describing a specific features, structure or feature in conjunction with any embodiment
Other embodiments are closed to realize that this feature, structure or feature are also fallen within the scope of the present invention.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (20)
1. a kind of piston rod part characterized by comprising
Connecting rod (10), the connecting rod (10) have connecting hole；
Interconnecting piece (20), the interconnecting piece (20) are arranged in the connecting hole；
Bushing (30), the bushing (30) are rotatably penetrated and arranged in the connecting hole, and the bushing (30) is rotationally arranged
In on the interconnecting piece (20), when the interconnecting piece (20) rotates in the connecting hole, the bushing (30) can be with respect to institute
State connecting rod (10) and the interconnecting piece (20) rotation.
2. piston rod part according to claim 1, which is characterized in that the connecting hole is multiple, the interconnecting piece
(20) to be multiple, multiple interconnecting pieces (20) are arranged correspondingly with multiple connecting holes, multiple connecting hole packets
It includes:
First connecting hole (11), first connecting hole (11) are set to the first end of the connecting rod (10)；
Second connecting hole (12), second connecting hole (12) are set to the second end of the connecting rod (10), the bushing (30)
Including the first bushing, first bushing is rotatablely arranged in first connecting hole (11), and/or, the bushing
It (30) include the second bushing, second bushing is rotatablely arranged in second connecting hole (12).
3. piston rod part according to claim 2, which is characterized in that multiple interconnecting pieces (20) include:
Piston pin (21), the piston pin (21) are arranged in first connecting hole (11), one end of the piston pin (21)
It offers fuel feed hole (211), the fuel feed hole (211) is extended along the axis direction of the piston pin (21), the piston
The outer peripheral surface of pin (21) offers at least one oil outlet (212), and the oil outlet (212) is connected with the fuel feed hole (211)
It is arranged logically.
4. piston rod part according to claim 3, which is characterized in that the fuel feed hole (211) be blind hole, it is described go out
Oilhole (212) be it is multiple, multiple oil outlets (212) are arranged with the fuel feed hole (211) with being connected, it is multiple it is described go out
Oilhole (212) is evenly distributed along the circumferential direction of the piston pin (21).
5. piston rod part according to claim 2, which is characterized in that multiple interconnecting pieces (20) include:
One end of crankshaft (22), the crankshaft (22) is provided with crank (221), and the crank (221) is arranged in described second and connects
It connects in hole (12), the outer peripheral surface of the crank (221) offers crank oil groove (2211).
6. piston rod part according to claim 1, which is characterized in that offer at least one on the bushing (30)
Oil-through-hole (31), the oil-through-hole (31) are penetratingly set from the inner surface of the bushing (30) to the outer surface of the bushing (30)
It sets.
7. piston rod part according to claim 6, which is characterized in that the oil-through-hole (31) is multiple, Duo Gesuo
The circumferential direction that oil-through-hole (31) is stated along the bushing (30) is equably arranged.
8. piston rod part according to claim 3, which is characterized in that the piston rod part further includes piston
(40), the connecting rod (10) is connected by the piston pin (21) with the piston (40), the bushing (30), the piston
(40), at least one of described connecting rod (10) can be made of plastic material.
9. piston rod part according to claim 1, which is characterized in that the revolving speed of the interconnecting piece (20) is W1, institute
The revolving speed for stating bushing (30) is W2,0.2≤W2/W1≤0.8.
10. piston rod part according to claim 1, which is characterized in that the bushing (30) includes:
Bush body (32), the bush body (32) are tubular structure；
Limiting section (33), the limiting section (33) are connected and along the bushing with the end face of one end of the bush body (32)
The radial direction of ontology (32) extends outwardly setting.
11. piston rod part according to claim 10, which is characterized in that the limiting section (33) is retention bead,
The retention bead be it is multiple, multiple retention beads are arranged circumferentially spaced along the bush body (32), alternatively, institute
Stating limiting section (33) is annular flange.
12. piston rod part according to claim 2, which is characterized in that at least one of multiple described connecting holes
It is offered on the inner surface of the connecting hole oil guide groove (13), the oil guide groove (13) extends along the axis direction of the connecting hole
Setting, the development length of the oil guide groove (13) are less than the length of the connecting hole.
13. piston rod part according to claim 12, which is characterized in that the oil guide groove (13) be it is multiple, it is multiple
The oil guide groove (13) is evenly distributed along the circumferential direction of the connecting hole.
14. piston rod part according to claim 12, which is characterized in that in multiple oil guide grooves (13) at least
One axis direction along the connecting hole extends spirally setting.
15. piston rod part according to claim 2, which is characterized in that at least one of multiple described connecting holes
The molded line of the cross section of the connecting hole is ellipse, and the elliptical short axle is parallel with the axis of the connecting rod (10), the company
Hole is connect for installing elliptic bearing.
16. a kind of piston rod part characterized by comprising
Connecting rod (10), the connecting rod (10) have multiple connecting holes；
Oil guide groove (13), the oil guide groove are offered on the inner surface of connecting hole described at least one of multiple described connecting holes
(13) it is extended along the axis direction of the connecting hole, the development length of the oil guide groove (13) is less than the length of the connecting hole
Degree.
17. piston rod part according to claim 16, which is characterized in that the oil guide groove (13) be it is multiple, it is multiple
The oil guide groove (13) is evenly distributed along the circumferential direction of the connecting hole.
18. a kind of piston rod part characterized by comprising
Connecting rod (10), the connecting rod (10) have multiple connecting holes；
Oil guide groove (13), the oil guide groove are offered on the inner surface of connecting hole described at least one of multiple described connecting holes
(13) first end from the first end of the connecting hole along the connecting hole hole wall gradually spiral to the second of the connecting hole
End.
19. a kind of piston rod part characterized by comprising
Connecting rod (10), the connecting rod (10) have multiple connecting holes；
The molded line of the cross section of connecting hole described at least one of multiple described connecting holes be ellipse, the elliptical short axle with
The axis of the connecting rod (10) is parallel, and the connecting hole is for installing elliptic bearing.
20. a kind of compressor, including piston rod part, which is characterized in that the piston rod part is claim 1 to 19
Piston rod part described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162100.9A CN109026607A (en) | 2018-09-30 | 2018-09-30 | Piston rod part and compressor with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162100.9A CN109026607A (en) | 2018-09-30 | 2018-09-30 | Piston rod part and compressor with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109026607A true CN109026607A (en) | 2018-12-18 |
Family
ID=64615661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811162100.9A Pending CN109026607A (en) | 2018-09-30 | 2018-09-30 | Piston rod part and compressor with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026607A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102199012B1 (en) * | 2019-11-15 | 2021-01-06 | 엘지전자 주식회사 | Connecting rod and reciprocation compressor including the same |
| CN112228305A (en) * | 2020-09-27 | 2021-01-15 | 广州万宝集团压缩机有限公司 | Connecting rod, compressor and thermoregulation device |
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