CN208221031U - Separate type inlays crankshaft and compressor - Google Patents

Abstract

The utility model provides a kind of separate type and inlays crankshaft and compressor, is related to Compressor Technology field, it includes short axle, the shaft shoulder and long axis that separate type, which inlays crankshaft,；Short axle is fixed on the shaft shoulder and can be pivotally connected with the major part of connecting rod, and the shaft shoulder and short axle are each provided at the side in cylinder block and being located at cylinder block, and long axis one end can be interference fitted with rotor, and the other end can pass through the axis hole of cylinder block and be fixedly connected with the shaft shoulder.Crankshaft in the prior art is alleviated to be an integral molding structure and lead to that difficulty of processing is big, reliability is low and need the technical issues of R slot is arranged on cylinder block.

Description

Separate type inlays crankshaft and compressor

Technical field

The utility model relates to Compressor Technology fields, inlay crankshaft and compressor in particular to a kind of separate type.

Background technique

Long axis, the shaft shoulder and the short axle of existing crankshaft part be it is whole, pass through casting integrated reprocessing form, Huo Zhetong Cross welded molding.And integrally formed crankshaft mainly has the disadvantages that (1) crankshaft structure is more complex, that is, needs long axis Central axes and the central axes of short axle be parallel to each other and not conllinear, required precision is higher, and difficult processing is big；(2) crankshaft long axis with turn Crankshaft is easily scratched when sub- elastic conjunction, and short axle and the shaft shoulder have been located in cylinder block at this time, so scrape slag be easily caught in crankshaft with Between cylinder block axis hole, the reliability of crankshaft is influenced；(3) it before installation major part mounting hole is enclosed connecting rod, first will need Crankshaft and cylinder installation are fixed, at this point, connecting rod is mounted on crankshaft and cylinder piston simultaneously along the axial direction of crankshaft, are needed The side wall of cylinder block is equipped with a R slot that small end of connecting rod can be made to pass through, and also guarantees that microcephaly can be articulated in work by piston pin In the cylinder holes of plug, and cylinder piston will lead to cost of manufacture height, install air-tightness in complicated for operation, cylinder because of setting R slot Low, compressor air-discharging rate reduces, heating inertia reduces, powder or impurity fall into the increase of the probability in cylinder holes and the abrasion of cylinder holes Probability increases, and is not able to satisfy people's demand.

Utility model content

The purpose of this utility model is to provide a kind of separate types to inlay crankshaft and compressor, in the prior art to alleviate Crankshaft is an integral molding structure and leads to that difficulty of processing is big, reliability is low and the technology that R slot is arranged on cylinder block is needed to ask Topic.

The utility model provides a kind of separate type and inlays crankshaft, including short axle, the shaft shoulder and long axis；

The short axle is fixed on the shaft shoulder and can be pivotally connected with the major part of connecting rod, and the shaft shoulder and the short axle are all provided with Side in cylinder block and positioned at cylinder block, described long axis one end can be interference fitted with rotor, and the other end can pass through institute It states the axis hole of cylinder block and is fixedly connected with the shaft shoulder.

Further；The shaft shoulder is equipped with blind hole away from one end of the short axle, and the long axis deviates from the one of the rotor End is plugged and fixed with the blind hole.

Further；The shaft shoulder is equipped with the connecting hole of at least two connection blind holes, the axis of the connecting hole Line and the central axes of the blind hole are parallel to each other, and the long axis is equipped with and the connection hole number phase away from one end of the rotor The same and one-to-one threaded hole in position；

It further include bolt identical with the connection hole number, the long axis is set in described away from one end of the rotor In blind hole, the bolt passes through the connecting hole and is threadedly coupled with the corresponding threaded hole.

Further；The blind hole is cylindrical hole, the long axis and the blind hole clearance fit, the side wall of the blind hole Equipped at least one raised line, the length direction of the raised line is the central axes direction of the blind hole；The long axis turns away from described The side wall of one end of son is correspondingly provided with groove identical and one-to-one with the raised line quantity；

When the long axis is plugged in the blind hole, the raised line is plugged in the corresponding groove.

Further；The raised line has two and length is equal to the depth of the blind hole, and two raised lines are oppositely arranged On the inner wall of the blind hole.

Further；The blind hole is square hole, and it is circular rotor joint and section is that the long axis, which includes section, Rectangular shaft shoulder interconnecting piece, shaft shoulder interconnecting piece described in the shaft shoulder can be mating with the blind hole.

Further；The long axis and the blind hole are interference fitted.

Further；The long axis is hollow steel pipe.

Further；The short axle is weldingly fixed on the shaft shoulder；

Alternatively, the short axle and the shaft shoulder integrally casting shaping.

The utility model also provides a kind of compressor, inlays crankshaft including separate type as described above.

Compared with the existing technology, separate type provided by the utility model inlays having the beneficial effect that for crankshaft and compressor:

Separate type provided by the utility model inlays crankshaft, including short axle, long axis and the shaft shoulder, wherein short axle and the shaft shoulder It being fixed to each other and is respectively positioned in cylinder block, short axle is used to be pivotally connected with the major part of connecting rod, and the shaft shoulder is cylinder block away from the side of short axle, Cylinder block is equipped with can be for the axis hole that long axis passes through, and long axis can be first interference fitted with rotor, be then then passed through axis hole and with The shaft shoulder is disassembled to be fixedly connected, and the overall structure that separate type inlays crankshaft is simple, easily switches existing integrally formed crankshaft, drop Low change investment.

Specifically, first the microcephaly of connecting rod and cylinder piston are pivotally connected first, then consolidate cylinder piston when installing crankshaft It is scheduled in cylinder holes, is then again pivotally connected the major part of connecting rod and short axle, when major part and short axle are pivotally connected, the central axes of short axle and cylinder block The central axes of upper shaft hole are vertical, and after pivot joint, short axle and the shaft shoulder integrally can be in cylinder block using the central axes of cylinder piston as axis It is rotated by 90 °, makes short axle and the shaft shoulder generally in the intracorporal designated position of cylinder；At this point, first long axis and rotor are interference fitted, so Make long axis pass through axis hole away from one end of rotor and be detachably fixed with the shaft shoulder in designated position again afterwards to connect, complete entire Installation process is installed simple and convenient.

In above-mentioned installation process, long axis can be installed with rotor engagement before upper production wire body, installation accuracy and cleaning It spends easy to control；Cylinder piston, which does not need the setting R slot on cylinder block, can be completed the connection of connecting rod Yu short axle and cylinder piston, gas Cylinder seat processing and fabricating is convenient, reduces the production cost；It also assures the air-tightness in cylinder, improves the exhaust rate of compressor, Improve heating inertia；Finally, further reduced the probability that impurity enters in cylinder cylinder holes after not setting R slot, reducing cylinder holes Abrasion probability, improve the reliability of compressor.

The technical advantage of compressor provided by the utility model is identical as the technical advantage that above-mentioned separate type inlays crankshaft, this Place repeats no more.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram that separate type provided by the embodiment of the utility model inlays crankshaft；

Fig. 2 is the structural schematic diagram that separate type provided by the embodiment of the utility model inlays crankshaft short-and-medium axle and the shaft shoulder；

Fig. 3 is the structural schematic diagram that separate type provided by the embodiment of the utility model inlays long axis in crankshaft；

Fig. 4 is the structural schematic diagram of compressor provided by the embodiment of the utility model；

Fig. 5 is the structural schematic diagram of cylinder block in compressor provided by the embodiment of the utility model；

Fig. 6 is the structural schematic diagram of cylinder block in the prior art.

Icon: 1- short axle；The 2- shaft shoulder；3- long axis；4- connecting rod；5- cylinder block；6- rotor；7- cylinder piston； 21- blind hole；22- raised line；31- groove；51- axis hole；52-R slot.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Embodiment one

As Figure 1-Figure 5, the utility model embodiment provides a kind of separate type and inlays crankshaft, including short axle 1, the shaft shoulder 2 And long axis 3；Short axle 1 is fixed on the shaft shoulder 2 and can be pivotally connected with the major part of connecting rod 4, and the shaft shoulder 2 and short axle 1 are each provided at cylinder block Side that is interior and being located at cylinder block 5,3 one end of long axis can be interference fitted with rotor 6, and the other end can pass through the axis of cylinder block 5 Hole 51 is simultaneously fixedly connected with the shaft shoulder 2.

Separate type provided by the embodiment of the utility model inlays crankshaft, including short axle 1, long axis 3 and the shaft shoulder 2, wherein short Axis 1 and the shaft shoulder 2 are fixed to each other and are respectively positioned in cylinder block, and short axle 1 is used to be pivotally connected with the major part of connecting rod 4, and the shaft shoulder 2 deviates from short axle 1 Side be cylinder block 5, cylinder block 5 be equipped with can first can match with 6 interference of rotor for the axis hole 51 that long axis 3 passes through, long axis 3 Close, be then then passed through axis hole 51 and with the shaft shoulder 2 is disassembled is fixedly connected, the overall structure that separate type inlays crankshaft is simple, easily cuts Existing integrally formed crankshaft is changed, change investment is reduced.

Specifically, first the microcephaly of connecting rod 4 and cylinder piston 7 are pivotally connected first when installing crankshaft, then by cylinder piston 7 are fixed in cylinder holes, are then again pivotally connected the major part of connecting rod 4 and short axle 1, when major part and short axle 1 are pivotally connected, the central axes of short axle 1 Vertical with the central axes of 5 upper shaft hole 51 of cylinder block, after pivot joint, short axle 1 and 2 entirety of the shaft shoulder can be in cylinder block with cylinder piston 7 central axes are rotated by 90 ° for axis, make short axle 1 and the shaft shoulder 2 generally in the intracorporal designated position of cylinder；At this point, first by long axis 3 With rotor 6 be interference fitted, then make again long axis 3 away from rotor 6 one end pass through axis hole 51 and be in designated position the shaft shoulder 2 It is detachably fixed connection, completes whole installation process, is installed simple and convenient.

In above-mentioned installation process, the cooperation of long axis 3 and rotor 6 can install before upper production wire body, installation accuracy and clearly Cleanliness is easy to control；As shown in Figure 5 and Figure 6, cylinder piston 7 do not need on cylinder block 5 be arranged R slot 52 can be completed connecting rod 4 with The connection of short axle 1 and cylinder piston 7,5 processing and fabricating of cylinder block is convenient, reduces the production cost；Also assure the gas in cylinder Close property, improves the exhaust rate of compressor, improves heating inertia；Finally, after not setting R slot 52, further reduced impurity into Enter the probability in cylinder cylinder holes, reduces the abrasion probability of cylinder holes, improve the reliability of compressor.

Specifically, the specific structure that the present embodiment also inlays crankshaft to separate type do it is described in detail below.

Firstly, in the present embodiment, the shaft shoulder 2 is equipped with blind hole 21 away from one end of short axle 1, long axis 3 away from rotor 6 one end with Blind hole 21 is plugged and fixed.

I.e. long axis 3, which can be inlayed, is fixed on to complete the relatively fixed of long axis 3 and the shaft shoulder 2 in blind hole 21, at this point, blind hole 21 It can guarantee that the central axes of long axis 3 after fixing and the central axes of short axle 1 are parallel to each other.

Alternatively, blind hole 21 at this time could alternatively be the through-hole of perforation, long axis 3 passes through through-hole away from one end of rotor 6, and Pass through the relatively fixed of the completions such as rivet, riveting pin and the shaft shoulder 2 in the other side of the shaft shoulder 2.

Specifically, the present embodiment by the shaft shoulder 2 be arranged blind hole 21 for separate type inlay crankshaft carry out it is introduced below.

Specifically, the shaft shoulder 2 is equipped with the connecting hole of at least two connection blind holes 21, the axis of connecting hole in the present embodiment Line and the central axes of blind hole 21 are parallel to each other, and long axis 3 is equipped with and position identical as connection hole number one by one away from one end of rotor 6 Corresponding threaded hole (being not drawn into figure)；Further include and connect the identical bolt of hole number, long axis 3 deviates from an end cap of rotor 6 It is located in blind hole 21, bolt passes through connecting hole and is threadedly coupled with respective screw hole.

Specifically, connecting hole is arranged on the end face of blind hole 21, connecting hole and and respective screw hole are passed through by bolt After threaded connection, long axis 3 is set in blind hole 21 and contacts with the fitting of the end face of blind hole 21, and then ensure that long axis 3 and the shaft shoulder 2 In the relatively fixed of 3 axial direction of long axis, and by least two connecting holes of setting, it ensure that long axis 3 and the shaft shoulder 2 in long axis 3 Circumferential direction it is relatively fixed.

The present embodiment considers the size of long axis 3 and the shaft shoulder 2, is arranged there are two connecting holes, two connecting holes are relatively blind The center symmetric setting in hole 21.

Further, in the present embodiment, blind hole 21 is cylindrical hole, long axis 3 and 21 clearance fit of blind hole, the side of blind hole 21 Wall is equipped at least one raised line 22, and the length direction of raised line 22 is the central axes direction of blind hole 21；Long axis 3 deviates from the one of rotor 6 The side wall at end is correspondingly provided with groove 31 identical and one-to-one with 22 quantity of raised line；It is convex when long axis 3 is plugged in blind hole 21 Item 22 is plugged in corresponding recesses 31.

I.e. long axis 3 is also cylindrical, by the mutually matched raised line 22 of setting and groove 31, can guarantee 3 He of long axis The shaft shoulder 2 is relatively fixed 3 circumferential direction of long axis, at this point, bolt need to only guarantee long axis 3 and the shaft shoulder 2 in 3 axial direction of long axis Fixation, bolt reduce aperture and the strength demand of bolt only by axial force.

Alternatively, can be set at this time connecting hole only one and the center of blind hole 21 is set, it is same meet fix Demand.

Further, in the present embodiment, raised line 22 has two and length is equal to the depth of blind hole 21, and two raised lines 22 are opposite It is arranged on the inner wall of blind hole 21.

It is apparent from, at work, long axis 3 mainly transmits torque, therefore the phase interaction between raised line 22 and groove 31 to compressor Firmly very big, in order to guarantee the stabilization of fixed structure between long axis 3 and the shaft shoulder 2, setting raised line 22 is long as far as possible and has one Fixed width.And two raised lines 22 are symmetrically arranged with, the torsion that long axis 3 is subject to can be also balanced, ensure that the steady of 3 structure of long axis It is fixed.

Alternatively, the present embodiment also can be set, raised line 22 is three or four, specific three or four raised lines 22 are along blind The circumferential direction in hole 21 is evenly distributed.

As further improvement of this embodiment, it is square hole that blind hole 21, which can also be arranged, in the present embodiment, and long axis 3 includes cutting Face is circular 6 interconnecting piece of rotor and section is rectangular 2 interconnecting piece of the shaft shoulder, and 2 interconnecting piece of the shaft shoulder described in the shaft shoulder 2 can be with blind hole 21 is mating.

Specifically, setting 2 interconnecting piece of the shaft shoulder length be less than or equal to blind hole 21 depth, 2 interconnecting piece of the shaft shoulder it is opposite The distance between digonous diameter less than or equal to 6 interconnecting piece of rotor, after guaranteeing that long axis 3 and the shaft shoulder 2 are relatively fixed, 3 end face of long axis It is bonded to each other and contacts with 21 end face of blind hole.

Alternatively, the cross sectional shape that 2 interconnecting piece of blind hole 21 and the shaft shoulder can also be arranged in the present embodiment is pentagon, star, three The shapes such as angular equally meet long axis 3 and the shaft shoulder 2 in the relatively-stationary demand of circumferential direction.

Alternatively, as shown in Figures 2 and 3, in the case where being not provided with connecting hole, the present embodiment can also be arranged long axis 3 with Blind hole 21 is interference fitted, and equally meets long axis 3 and the relatively-stationary demand of the shaft shoulder 2.

Further, the present embodiment long axis 3 is hollow steel pipe.

Crankshaft in compared with the prior art, the isolated system easy to process of long axis 3 in the present embodiment for interference fit Make or exempt to process, meanwhile, in the case where meeting structural strength, setting long axis 3 is hollow structure, further reduced and is fabricated to This, meets people's demand.

Finally, setting short axle 1 is weldingly fixed on the shaft shoulder 2 on the end face of long axis 3 in the present embodiment, or welding is solid It is scheduled on the side of the shaft shoulder 2, and is protruded to the shaft shoulder 2 away from the side of long axis 3.

Alternatively, in order to further ensure 2 integral strength of short axle 1 and the shaft shoulder, short axle 1 and the shaft shoulder can also be arranged in the present embodiment 2 integrally casting shapings.

Embodiment two

As shown in Figure 4 and Figure 5, the utility model embodiment provides a kind of compressor, including separate type as described above Inlay crankshaft.

Compressor provided by the embodiment of the utility model inlays crankshaft by using the separate type in above-described embodiment, tool There is installation simple and convenient, installation accuracy and cleannes are easy to control between long axis 3 and rotor 6, and cylinder block 5 does not need that R slot is arranged again 52, refrigerating capacity is improved, COP is improved, drops the technical advantage of this processing cost, specific structure and above-mentioned separate type inlay crankshaft knot Structure is identical, and details are not described herein again.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention Within the scope of and form different embodiments.For example, embodiment claimed is appointed in claims above Meaning one of can in any combination mode come using.The information disclosed in the background technology section is intended only to deepen to this The understanding of the general background technology of invention, and be not construed as recognizing or implying in any form that information composition has been ability The prior art well known to field technique personnel.

Claims (10)

1. a kind of separate type inlays crankshaft, which is characterized in that including short axle, the shaft shoulder and long axis；

The short axle is fixed on the shaft shoulder and can be pivotally connected with the major part of connecting rod, and the shaft shoulder and the short axle are each provided at gas Side in cylinder body and positioned at cylinder block, described long axis one end can be interference fitted with rotor, and the other end can pass through the gas The axis hole of cylinder seat is simultaneously fixedly connected with the shaft shoulder.

2. separate type according to claim 1 inlays crankshaft, which is characterized in that the shaft shoulder deviates from one end of the short axle Equipped with blind hole, the long axis is plugged and fixed away from one end of the rotor with the blind hole.

3. separate type according to claim 2 inlays crankshaft, which is characterized in that the shaft shoulder is equipped at least two connections The connecting hole of the blind hole, the central axes of the connecting hole and the central axes of the blind hole are parallel to each other, and the long axis deviates from institute The one end for stating rotor is equipped with the connection hole number the identical and one-to-one threaded hole in position；

It further include bolt identical with the connection hole number, the long axis is set in the blind hole away from one end of the rotor Interior, the bolt passes through the connecting hole and is threadedly coupled with the corresponding threaded hole.

4. separate type according to claim 3 inlays crankshaft, which is characterized in that the blind hole is cylindrical hole, the length The side wall of axis and the blind hole clearance fit, the blind hole is equipped at least one raised line, and the length direction of the raised line is described The central axes direction of blind hole；The long axis away from the rotor one end side wall be correspondingly provided with it is identical as the raised line quantity and One-to-one groove；

When the long axis is plugged in the blind hole, the raised line is plugged in the corresponding groove.

5. separate type according to claim 4 inlays crankshaft, which is characterized in that the raised line has two and length is equal to institute The depth of blind hole is stated, two raised lines are oppositely arranged on the inner wall of the blind hole.

6. separate type according to claim 3 inlays crankshaft, which is characterized in that the blind hole is square hole, the long axis Including section be circular rotor joint and section is rectangular shaft shoulder interconnecting piece, and shaft shoulder interconnecting piece described in the shaft shoulder can It is mating with the blind hole.

7. separate type according to claim 2 inlays crankshaft, which is characterized in that the long axis is matched with the blind hole interference It closes.

8. separate type according to claim 6 inlays crankshaft, which is characterized in that the long axis is hollow steel pipe.

9. separate type according to claim 1-8 inlays crankshaft, which is characterized in that the short axle is welded and fixed On the shaft shoulder；

Alternatively, the short axle and the shaft shoulder integrally casting shaping.

10. a kind of compressor, which is characterized in that inlay crankshaft including separate type as claimed in any one of claims 1-9 wherein.