CN108457837A - A kind of connecting rod of reciprocating compressor and piston coupling structure and its assembly method - Google Patents
A kind of connecting rod of reciprocating compressor and piston coupling structure and its assembly method Download PDFInfo
- Publication number
- CN108457837A CN108457837A CN201810271247.5A CN201810271247A CN108457837A CN 108457837 A CN108457837 A CN 108457837A CN 201810271247 A CN201810271247 A CN 201810271247A CN 108457837 A CN108457837 A CN 108457837A
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- Prior art keywords
- piston
- connecting rod
- bulb
- plastic containing
- containing chamber
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- 230000008878 coupling Effects 0.000 title claims abstract description 24
- 238000010168 coupling process Methods 0.000 title claims abstract description 24
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 89
- 229920003023 plastic Polymers 0.000 claims abstract description 89
- 239000000463 material Substances 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 12
- 229920006351 engineering plastic Polymers 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 208000004141 microcephaly Diseases 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 240000000233 Melia azedarach Species 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 20
- 238000005461 lubrication Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005728 strengthening Methods 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
-
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/22—Connection to driving members with connecting-rods, i.e. pivotal connections with universal joint, e.g. ball-joint
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compressor (AREA)
Abstract
The invention discloses a kind of connecting rod of reciprocating compressor and piston coupling structures, connecting rod (1) is connect using bulb (2) with piston (4), connecting rod is equipped with plastic containing chamber (3) with piston coupling structure, plastic containing chamber (3) covers again to be attached in piston cavity (41), and bulb (2) is placed in plastic containing chamber (3).The invention also discloses the assembly methods of the connection structure.Using above-mentioned technical proposal, since bulb is in the movement of plastic containing chamber energy upper and lower, left and right or rotation, or bulb can be moved or be rotated in a desired direction in plastic containing intracavitary, when element precision is overproof, small end of connecting rod overcomes the problems, such as that element precision is bad by mobile or rotation, when such as link parallelism, verticality and bad two hole perpendicularity of cylinder block cylinder holes, small end of connecting rod passes through mobile or rotation adjustment connecting rod body position, ensure that connecting rod macropore is in best fit position with bent axle, reduce the friction of macropore and bent axle, reduces power loss.
Description
Technical field
The invention belongs to the technical fields of reciprocating compressor, more particularly it relates to a kind of company of reciprocating compressor
Bar and piston coupling structure.The invention further relates to the assembly methods of the connection structure.
Background technology
There is the document of following discloses to be related to bulb company for the connection of connecting rod and piston in existing compressor field
The technology connect：
Publication number CN1626855A discloses a kind of piston apparatus, which coupled by connecting rod sphere, and sphere need to be consolidated
Determine the formed cavity support of component, strengthening part, what which solved is to keep fuel feeding logical by oil circuit (12,11,14,32,33)
Road 5 forms lubrication groove 30 on circumferential surface 29 and is connected, to ensure the sphere in ball-joint, piston sufficient lubrication, therefore, the hair
Bright emphasis is the lubrication problem for solving sphere and piston；
Notification number CN205841139U discloses a kind of piston rod part, needs to weld the first ball seat, the first ball seat is wanted
Manganese phosphate processing is carried out to prolong the service life and improve reliability；But how the second ball seat and the first ball seat ensure reliability
Connection type it is not open；It needs to increase oil-way on ball seat, connecting rod need to increase oil circuit, lubricate by refrigerator oil entire
Bulb, with this come realize link transmission with lubrication.The invention mainly solves the lubrication problem of oil；
Notification number CN203962325U discloses a kind of compressor with external rotor electric machine, the technical issues of solution
It is：For stator and mainframe interference cold pressing and gap weldig, host frame aperture is caused to be deformed because pressure acts on, bent axle is in host
The change of team of frame aperture inward turning generates more serious abrasion；Simultaneously as stator material and mainframe material are inconsistent, lead to welding performance
It is excessively poor, and cannot be guaranteed the welding quality of mainframe and inner stator, it deposits stator and falls off problem, therefore, the invention is by setting
It sets bearing block identical with motor stator material, locating piece and locating slot, ensure stator and bearing block precise positioning and reliably welds
It fetches and overcomes stator of poor quality with welding machine frame, stator falls off hidden danger and the defects of bent axle is more badly worn；Although in the hair
To one end of connecting rod 6 it is spherical shape involved in bright, spherical one end shape that also bearing 3 is defined in piston 7 matches holding tank
71, but connecting rod 6 how to be connect with holding tank 71 and how about holding tank 71 connect with piston, without open；
Notification number CN205533084U discloses a kind of piston connecting rod structure for refrigeration compressor, and 12 edge of spherical cap is set
There is buckle 23 is corresponding with piston card slot 22 to be fixedly connected, ball seat is welded with top land, and connecting rod tail portion 25 reaches ball seat bottom,
Connecting rod oilhole connects with piston oilhole again with ball seat oil groove, while openly such as gonnecting rod body, spherical cap, elastic element, sphere, ball seat
It has also needed buckle, oil groove, also to have pierced through-hole in gonnecting rod body, found out that positioning is more complex with connection type from the patent, part knot
Structure is more complex, it is also necessary to which refrigerator oil lubricates, and cost is higher, and equally, which is also to solve the problems such as lubrication is abundant；
Notification number CN204941825U discloses a kind of piston crank mechanism, and piston cavity is provided with bushing, bushing with it is outer
The connection of shell with fastener position limiting structure is connect using bonding or by card slot；It is equipped with through-hole 125 in the bottom wall of holding tank 121, is led to
Oil storage tank 130 is limited between 110 inner bottom wall face of hole 125 and shell, and stores lubricating oil using oil storage tank 130, to utilize oil storage
Lubricating oil in slot 130 carries out continuous lubrication to bulb 220, and to be connected and fixed connection mode more complex there is also bulb for the technology,
Bushing material is not open, needs lubricating oil to be lubricated to improve connection rod sphere reliability, more multiple for mode is fixedly connected with
It is miscellaneous, material insufficient disclosure, need oil lubrication connection etc. be also that the invention solves problems.
In above-mentioned documents, although piston and connecting rod are mainly considered how all by the way of bulb connection
By connecting the structure of positioning come the problem of ensureing lubrication, connection positioning method is also more complicated；And needs are solved
Key technical problem, such as lubrication system is excessively complicated, how connection precision ensures, without reference to.
Invention content
The present invention provides a kind of connecting rod and piston coupling structure of reciprocating compressor, and the purpose is to solve the above-mentioned prior art
The defect that middle connecting rod is connect with piston.
To achieve the goals above, the technical solution that the present invention takes is：
The connecting rod and piston coupling structure of the reciprocating compressor of the present invention, the connecting rod are connect using bulb with piston,
The connecting rod is equipped with plastic containing chamber with piston coupling structure, and the plastic containing chamber covers again to be attached in piston cavity；Institute
The bulb stated is placed in plastic containing chamber.
It is PI polyimides or polytetrafluoroethylene (PTFE) that the plastic containing chamber, which uses engineering plastics, the engineering plastics,
PTFE。
The side of the plastic containing chamber is equipped with the plastics clamping head of elastically deformable, and the plastics clamping head is plastics
Accommodating chamber along its side element line outwardly convex.
In position corresponding with the plastics clamping head, piston cavity clamping head is arranged in the piston cavity, described
The shape of piston cavity clamping head merge to form certain interval with the shape kissing of plastics clamping head.
The piston forms piston cavity 41, the wall thickness that the piston 4 connects with piston cavity by mold cold-heading
For 2.0~4.0mm, the wall thickness of the piston and cylinder block cylinder holes mating surface is 1.0~1.5mm.The piston cold-heading is formed
Piston cavity is integral part, piston cavity uniform wall thickness with piston, and piston cavity height can be adjusted according to bulb size
Section.
The diameter of the piston cavity is bigger 1.0~1.5mm than bulb diameter.
The material of the piston is 08AL or 10 carbon steels.
The connecting rod includes gonnecting rod body and big end, and the gonnecting rod body and big end are identical material, described
Gonnecting rod body connect by welding manner with big end.
The bulb is solid metal bulb, and the microcephaly of the bulb and gonnecting rod body is connected by welding manner.
The present invention also provides the assembly method of the connecting rod of above-described reciprocating compressor and piston coupling structure, skills
Art scheme is that the process of the assembly method is：
Step 1: the microcephaly of Lian Xuanti and bulb are welded by rubbing, and plastic containing chamber is put into piston cavity,
Plastic containing chamber is concordant with piston cavity installation；
Step 2: bulb is placed in plastic containing chamber；
Step 3: by fixture from the opening of piston according to piston cavity axisymmetrical reach piston cavity side,
And start fixture, make the both sides of clamp piston cavity, forms plastics clamping head and piston cavity clamping head；
Step 4: fixture when clamping piston inner cavity both sides form plastics clamping head, according to the size of bulb, presss from both sides to determine
Hold position shape and size；Plastics clamping head clamping after requirement be：Bulb cannot fall off from plastic containing chamber, meanwhile, bulb
There are the gap for capableing of any direction movement or bulb to have shifting in a desired direction in plastic containing chamber in plastic containing chamber
Dynamic gap, and can rotate.
The present invention uses above-mentioned technical proposal, since bulb in the movement of plastic containing chamber energy upper and lower, left and right or rotates, when
When element precision is overproof, small end of connecting rod overcomes the problems, such as that element precision is bad by mobile or rotation, such as link parallelism, vertically
When degree and two hole perpendicularity of cylinder block cylinder holes are bad, small end of connecting rod ensures connecting rod by mobile or rotation adjustment connecting rod body position
Macropore is in best fit position with bent axle, reduces the friction of macropore and bent axle, reduces power loss；Ball head connecting rod is to pass through
Prill is welded on connecting rod corpusculum by friction welding, and welding quality is high with intensity；Meanwhile more usefully, due to plastics
Accommodating chamber uses the engineering plastics with high temperature resistant, corrosion resistance and low-friction coefficient, prill not to need refrigerator oil
Lubrication need not design complicated pump oil technology and ensure to lubricate with oil duct, improve the reliability of compressor operating；In addition, by
It is 08AL or 10 carbon steels in the material of piston, processing performance is good, and piston turning precision is high, and also outside piston does not have
Piston oil slot, sealing effect is good, improves compressor refrigerating capacity.
Description of the drawings
Label is briefly described as follows in content and figure shown in attached drawing：
Fig. 1 is the explosive view of the present invention；
Fig. 2 be the present invention assembly after design sketch；
Fig. 3 is that the embodiment of the present invention one assembles after-explosion schematic diagram；
Fig. 4 is schematic diagram after the embodiment of the present invention two is assembled；
Fig. 5 is the link mechanism schematic diagram of the present invention.
In figure label for：
1, connecting rod, 2, bulb, 3, plastic containing chamber, 4, piston, 5, big end, 6, gonnecting rod body, 21, plumb joint, 31,
Plastics clamping head, 41, piston cavity, 42, piston cavity clamping head, 61, gonnecting rod body and big end plumb joint.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, making to the specific implementation mode of the present invention further details of
Illustrate, to help those skilled in the art to the inventive concept of the present invention, that technical solution has is more complete, accurate and deep
Understand.
As expressed by Fig. 1 to Fig. 5 the present invention structure, be a kind of reciprocating compressor connecting rod and piston coupling structure,
The connecting rod 1 is connect using bulb 2 with piston 4.
In order to overcome the deficiencies of existing technologies, the technical solution that the present invention takes is：
As shown in Figure 1 to Figure 3, the connecting rod and piston coupling structure of reciprocating compressor of the invention, the connecting rod 1 use
Bulb 2 is connect with piston 4, and the connecting rod is equipped with plastic containing chamber 3 with piston coupling structure, and the plastic containing chamber 3 is again
Set is attached in piston cavity 41；The bulb 2 is placed in plastic containing chamber 3.
Entire con-rod only need not design oil circuit with welded bulb 2, and bulb 2 need not also lubricate, because of engineering
Plastics inherently have the performance of good place's lubrication.Bulb 2 can turn upper and lower, front, rear, left and right in plastic containing chamber
Dynamic, bulb can overcome such as link parallelism, verticality and cylinder block verticality bad in rotation process with self centering
Problem improves power-transmitting part reliability and reduces noise, while can reduce difficulty of processing.
It is PI polyimides or polytetrafluoroethylene (PTFE) that the plastic containing chamber 3, which uses engineering plastics, the engineering plastics,
PTFE。
The plastic containing chamber 3 is that have high temperature resistant, corrosion-resistant and low-friction coefficient engineering plastics, therefore, metal
Bulb 2 does not need refrigerator oil lubrication, need not design complicated pump oil technology and ensure to lubricate with oil duct, improve compressor
Reliability of operation；
The side of the plastic containing chamber 3 is equipped with the plastics clamping head 31 of elastically deformable, the plastics clamping head 31
It is plastic containing chamber 3 along the outwardly convex of its side element line.
The effect of the plastics clamping head 31 be so that plastic containing chamber 3 be easier to occur flexible deformation, facilitate bulb to adjust
Position.
In position corresponding with the plastics clamping head 31, piston cavity clamping head is arranged in the piston cavity 41
42, the shape of the piston cavity clamping head 42 merges to form certain interval with the shape kissing of plastics clamping head 31.
In this way so that plastic containing chamber 3 is deforming and causing plastics clamping head 31 when deforming, and has certain
Space allows its deformation.
The piston 4 forms piston cavity 41, the wall thickness that the piston 4 connects with piston cavity by mold cold-heading
For 2.0~4.0mm, the wall thickness of the piston 4 and cylinder block cylinder holes mating surface is 1.0~1.5mm.
Piston is provided with equal circumference piston cavity 41, and the diameter of piston cavity is bigger 1.0~1.5mm than 2 diameter of metal ball-head,
The piston cavity 41 places plastic containing chamber 3, and the plastic containing chamber 3 is equal circumference accommodating chamber, diameter
More smaller than piston cavity 41, the plastic containing chamber 3 accommodates connecting rod corpusculum metal ball-head 2, the connecting rod corpusculum metal ball with
Separated by plastic containing chamber between piston cavity, the gonnecting rod body corpusculum metal ball plastic containing chamber can it is upper and lower, left,
Right swing.
The diameter of the piston cavity 41 is bigger 1.0~1.5mm than 2 diameter of bulb.This is to say, piston cavity 41 and ball
The wall thickness dimension of plastic containing chamber 3 between first 2 is just in the size range.
The material of the piston 4 is 08AL or 10 carbon steels.
Since the material of piston 4 is 08AL or 10 carbon steels, processing performance is good, and piston turning precision is high, in addition, living
Justify no piston oil slot beyond the Great Wall, sealing effect is good, improves compressor refrigerating capacity.
The connecting rod 1 includes gonnecting rod body 6 and big end 5, and the gonnecting rod body 6 and big end 5 are identical material,
The gonnecting rod body 6 is connect with big end 5 by welding manner.Its position welded is gonnecting rod body and big end in figure
Plumb joint 61.
Gonnecting rod body 6 is stamped and formed out for diel.The bulb 2 is solid metal bulb.The bulb 2 and connecting rod
The microcephaly of body 6 is connected by welding manner.Its position welded is the plumb joint 21 in figure.Ball head connecting rod is welded by rubbing
It connects and prill is welded on connecting rod corpusculum, welding quality is high with intensity.
The present invention additionally provides following two specific implementation examples for above-mentioned connection structure, when for implementing the present invention
Selection application：
Embodiment one：
As shown in Figure 2 and Figure 3, the side of the plastic containing chamber 3 sets the plastics clamping head there are one elastically deformable
31, the plastics clamping head 31 is turning up outward along 3 side element line of plastic containing chamber.
Embodiment two：
As shown in figure 4, the side of the plastic containing chamber 3 sets the plastics clamping head 31 there are two elastically deformable, and
It is distributed by the axisymmetrical of plastic containing chamber 3；Equally, the plastics clamping head 31 is along 3 side element line of plastic containing chamber
It turns up outward.
The present invention also provides the assembly method of the connecting rod of above-described reciprocating compressor and piston coupling structure, skills
Art scheme is that the process of the assembly method is：
Step 1: the even microcephaly of pavilion body 6 is welded with bulb 2 by rubbing, and plastic containing chamber 3 is put into piston cavity
In 41, plastic containing chamber 3 is installed concordant with piston cavity 41；
Step 2: bulb 2 is placed in plastic containing chamber 3；
Step 3: by fixture from the opening of piston 4 according to piston cavity 41 axisymmetrical reach piston cavity 41
Side, and start fixture, make the both sides of clamp piston cavity 41, forms plastics clamping head 31 and piston cavity clamping head
42；
Step 4: fixture when 41 both sides of clamping piston inner cavity form plastics clamping head 31, according to the size of bulb 2, comes
Determine retaining part shape and size；Plastics clamping head 31 clamp after requirement be：Bulb 2 cannot be de- from plastic containing chamber 3
It falls, meanwhile, bulb 2 has the gap for capableing of any direction movement or bulb 2 in plastic containing chamber 3 in plastic containing chamber 3
There is mobile gap in a desired direction, and can rotate.
Since bulb 2 can upper and lower, left and right be mobile or rotation or bulb 2 are in plastic containing chamber in plastic containing chamber 3
It can move or rotate on the direction of 3 innate need of the economy, when element precision is overproof, small end of connecting rod overcomes zero by mobile or rotation
The bad problem of part precision, when such as link parallelism, verticality and bad two hole perpendicularity of cylinder block cylinder holes, small end of connecting rod passes through shifting
Dynamic or rotation adjustment connecting rod body position ensures that connecting rod macropore and bent axle be in best fit position, and reduction macropore and bent axle rub
It wipes, reduces power loss.
The connection precision of connecting rod and piston is ensured by adaptive mode, is exactly adjusted using certain flexibility, gap
Position.Because big end has connection request with bent axle；Piston has connection request with cylinder body, if the connection of bulb and piston
The problem of precision limitation is excessively stringent, and reverse side can cause processing difficulties, connection card resistance (being commonly called as awkward, other strength).So this hair
It is bright using a kind of error containing by the way of.Essence is exactly to use the engineering plastics with certain flexibility, and there are necessary
Gap, with absorption errors.
Under normal circumstances, gonnecting rod body should have certain gap along crankshaft center line direction, and the length direction of gonnecting rod body
And the transverse direction vertical with bent axle had better not have gap, otherwise will produce noise and hit vibration.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without changing
Other occasions are directly applied to by the design of the present invention and technical solution, within protection scope of the present invention.
Claims (10)
1. the connecting rod and piston coupling structure of a kind of reciprocating compressor, the connecting rod (1) is connected using bulb (2) and piston (4)
It connects, it is characterised in that：The connecting rod is equipped with plastic containing chamber (3) with piston coupling structure, and the plastic containing chamber (3) is again
Set is attached in piston cavity (41)；The bulb (2) is placed in plastic containing chamber (3).
2. the connecting rod and piston coupling structure of reciprocating compressor described in accordance with the claim 1, it is characterised in that：The plastics
It is PI polyimides or polytetrafluoroethylene PTFE that accommodating chamber (3), which uses engineering plastics, the engineering plastics,.
3. the connecting rod and piston coupling structure of reciprocating compressor described in accordance with the claim 1, it is characterised in that：The plastics
The side of accommodating chamber (3) is equipped with the plastics clamping head (31) of elastically deformable, and the plastics clamping head (31) is plastic containing chamber
(3) along the outwardly convex of its side element line.
4. the connecting rod and piston coupling structure of reciprocating compressor described in accordance with the claim 3, it is characterised in that：With it is described
Piston cavity clamping head (42), the piston is arranged in plastics clamping head (31) corresponding position, the piston cavity (41)
The shape of inner cavity clamping head (42) merges to form certain interval with the shape kissing of plastics clamping head (31).
5. the connecting rod and piston coupling structure of reciprocating compressor described in accordance with the claim 1, it is characterised in that：The piston
(4) piston cavity (41) is formed by mold cold-heading, the wall thickness that the piston (4) connects with piston cavity for 2.0~
The wall thickness of 4.0mm, the piston (4) and cylinder block cylinder holes mating surface is 1.0~1.5mm.
6. the connecting rod and piston coupling structure of reciprocating compressor described in accordance with the claim 1, it is characterised in that：The piston
The diameter of inner cavity (41) is bigger 1.0~1.5mm than bulb (2) diameter.
7. the connecting rod and piston coupling structure of reciprocating compressor described in accordance with the claim 1, it is characterised in that：The piston
(4) material is 08AL or 10 carbon steels.
8. the connecting rod and piston coupling structure of reciprocating compressor described in accordance with the claim 1, it is characterised in that：The connecting rod
(1) include gonnecting rod body (6) and big end (5), the gonnecting rod body (6) and big end (5) are identical material, the company
The body of rod (6) is connect with big end (5) by welding manner.
9. the connecting rod and piston coupling structure of reciprocating compressor according to claim 8, it is characterised in that：The bulb
(2) it is solid metal bulb, the bulb (2) is connect with the microcephaly of gonnecting rod body (6) by welding manner.
10. the assembly side of the connecting rod and piston coupling structure according to the reciprocating compressor described in any one of claim 1 to 9
Method, it is characterised in that the process of the assembly method is：
Step 1: the microcephaly of Lian Xuanti (6) and bulb (2) are welded by rubbing, and plastic containing chamber (3) is put into piston
In chamber (41), plastic containing chamber (3) is concordant with piston cavity (41) installation；
Step 2: by bulb (2) merging plastic containing chamber (3)；
Step 3: by fixture from the opening of piston (4) according to piston cavity (41) axisymmetrical reach piston cavity
(41) side, and start fixture, make the both sides of clamp piston cavity (41), forms plastics clamping head (31) and piston cavity
Clamping head (42)；
Step 4: fixture is when clamping piston inner cavity (41) both sides form plastics clamping head (31), according to the size of bulb (2),
To determine retaining part shape and size；Plastics clamping head (31) clamp after requirement be：Bulb (2) cannot be from plastic containing chamber
(3) it falls off, meanwhile, bulb (2) has the gap for capableing of any direction movement or bulb (2) in plastics in plastic containing chamber (3)
Accommodating chamber (3) has mobile gap in a desired direction, and can rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271247.5A CN108457837A (en) | 2018-03-29 | 2018-03-29 | A kind of connecting rod of reciprocating compressor and piston coupling structure and its assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271247.5A CN108457837A (en) | 2018-03-29 | 2018-03-29 | A kind of connecting rod of reciprocating compressor and piston coupling structure and its assembly method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108457837A true CN108457837A (en) | 2018-08-28 |
Family
ID=63238213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810271247.5A Pending CN108457837A (en) | 2018-03-29 | 2018-03-29 | A kind of connecting rod of reciprocating compressor and piston coupling structure and its assembly method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108457837A (en) |
Cited By (2)
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| CN109998876A (en) * | 2019-01-18 | 2019-07-12 | 东莞市西芹电器有限公司 | A kind of hand held muscle massage device |
| CN115076070A (en) * | 2022-06-20 | 2022-09-20 | 青岛万宝压缩机有限公司 | Compression unit, oil-free linear compressor and installation method |
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| CN201310457Y (en) * | 2008-10-21 | 2009-09-16 | 上海海立（集团）股份有限公司 | Connecting structure of piston and connecting rod of sealed type reciprocating compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998876A (en) * | 2019-01-18 | 2019-07-12 | 东莞市西芹电器有限公司 | A kind of hand held muscle massage device |
| CN109998876B (en) * | 2019-01-18 | 2025-01-21 | 东莞市西芹电器有限公司 | A hand-held muscle massager |
| CN115076070A (en) * | 2022-06-20 | 2022-09-20 | 青岛万宝压缩机有限公司 | Compression unit, oil-free linear compressor and installation method |
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