CN202300914U - Split-type connecting rod of reciprocating piston compressor - Google Patents
Split-type connecting rod of reciprocating piston compressor Download PDFInfo
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- CN202300914U CN202300914U CN2011204175666U CN201120417566U CN202300914U CN 202300914 U CN202300914 U CN 202300914U CN 2011204175666 U CN2011204175666 U CN 2011204175666U CN 201120417566 U CN201120417566 U CN 201120417566U CN 202300914 U CN202300914 U CN 202300914U
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- groove
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Abstract
The utility model relates to a split-type connecting rod of a reciprocating piston compressor, wherein a groove is arranged in the middle of the rod body end at a large head, and a bulge is arranged in the middle of the rod body end at a small head; first planes which are flush with each other and vertical to the rod body direction are respectively arranged on the two sides of the groove at the large head; the bulge at the small head is matched with the groove at the large head in shape, and second planes which are matched and contacted with the first planes are respectively arranged on the two sides of the bulge at the small head; when the large head is connected with the small head in a matched manner, the bulge at the small head is positioned in the groove at the large head, the matched surfaces of the bulge at the small head and the groove at the large head are not in contact, and the first planes and the second planes at the two sides are contacted with each other respectively. According to the structure, the stress concentration situation of the root parts of gate posts at the two sides of the groove at the large head does not exist; compared with the component force of the existing structure, the component force is small, the direction of the component force is the same with the reciprocating movement direction of the piston and the connecting rod, so that the stress concentration situation of the root parts of the U-shaped gate posts at the two sides of the groove at the large head cannot exist, and the stress situation of the large head is greatly improved.
Description
Technical field
The utility model belongs to compressor and makes the field, is specifically related to the reciprocating piston type split connecting rod of compressor.
Background technique
Existing hermetically sealed compressor generally adopts the reciprocating piston type crankshaft & connecting; Cylinder block 1, bent axle 2, connecting rod 3, piston 4, the wrist pin 5 of mainly comprising as shown in Figure 1; Wherein, Connecting rod 3 one ends are enclosed within on the eccentric shaft of bent axle 2, and the other end is enclosed within on the wrist pin 5 and through wrist pin 5 piston 4 and connecting rod 3 is linked together, and bent axle 2 rotates and promotes connecting rod 3 and do reciprocating linear motion with the slideway of piston 4 along cylinder block 1.In the existing technology shown in Figure 1, because the connecting rod 3 general monolithic constructions that adopt are carried out for what guarantee to assemble smoothly, the afterbody in cylinder block 1 cylinder hole must be provided with a slot to make way 6 of placing connecting rod 3 microcephalies.The cylinder hole can deform adding man-hour like this, can have leakage simultaneously.
Adopt the split connecting rod for addressing the above problem, existing split connecting rod has two kinds of separating types, and an a kind of end is a connecting rod shank, and the other end is the connecting rod cap, uses screw attachment between the two.
Another kind is to separate with bar portion between the microcephaly at major part, and separately design a kind of structure in place's links together both with elastic circlip; As shown in Figure 2, its structure comprises connnecting rod big end 7, connecting rod small end 8 and elastic circlip 9.Its installation process is shown in Fig. 3 and 4; At first connnecting rod big end 7 is enclosed within on the eccentric shaft of bent axle 2; Then connecting rod small end 8 is enclosed within on the wrist pin 5 and holding is assembled into assembly in piston 4; Then the V-arrangement convexity with connecting rod small end 8 is assembled in the V-shaped groove of connnecting rod big end 7; At last elastic circlip 9 is stuck in the bar portion circular arc locating slot at connnecting rod big end 7, connecting rod small end 8 places of being connected the split connecting rod is become one, bent axle 2 rotates and promotes connecting rod 3 and do reciprocating linear motion with the slideway of piston 4 along cylinder block 1.
The split connecting rod that connects with elastic circlip among Fig. 2-4; Circular arc locating slot 7-3 of bar portion and 8-3 place at connnecting rod big end 7, microcephaly 8 places of being connected couple together through elastic circlip 9, are in contact with one another transmission power through v-depression 7-1 and the protruding 8-1 of V-arrangement between major part 7 and the microcephaly 8.As shown in Figure 2, when eccentric shaft promoted piston toward upper dead center motion compresses gas, the bi-side 7-2 of the v-depression 7-1 of major part 7 contacted the transmission of carrying out power with the protruding 8-1 bi-side 8-2 of microcephaly 8 V-arrangement; When eccentric shaft 2 moved toward lower dead centre, this moment, elastic circlip 9 received the effect of power, and connnecting rod big end 7 is linked together with microcephaly 8, and pulling piston 4 is got back to lower dead centre.For this structure, major part 7 is not best with microcephaly 8 stressing conditions.When eccentric shaft promoted piston 4 toward upper dead center motion compresses gas, the gas force F that passes over from piston end surface was broken down into power F1 and F2 perpendicular to major part V-arrangement face, at this moment F1=F2＞1/2F.And because component F1, F2 are vertical each other with major part V-arrangement face, can there be the concentrated situation of stress in the protruding root in major part v-depression 7-1 both sides.When eccentric shaft retracts piston toward the lower dead centre operation; Elastic circlip 9 will produce active force to the protruding 8-1 of microcephaly 8 V-arrangement this moment, owing to be v-shaped structure, material is weak less; The suffered stress of the protruding 8-1 of V-arrangement is bigger, can produce the situation that stress is concentrated at the root of circular arc locating slot 7-3.
Summary of the invention
The technical problem that the utility model will solve overcomes above-mentioned technological deficiency exactly and a kind of Reciprocting piston compressor split connecting rod is provided; Can improve the root of notch stressing conditions; Effectively avoid stress concentration effect; Be applicable to refrigeration compressor, particularly small-sized totally-enclosed reciprocating-piston type refrigerating compressor.
The utility model is to solve the problems of the technologies described above the technological scheme that is adopted to be:
A kind of Reciprocting piston compressor split connecting rod comprises the connnecting rod big end that is connected with crankshaft eccentric shaft, the connecting rod small end that is connected with piston, and major part is connected fixing elastic circlip with the microcephaly; Along body of rod direction, groove is set in the middle of the body of rod end of major part, convexity is set in the middle of microcephaly's the body of rod end; Major part is connected the cooperation place and is provided with the locating slot that is used to install elastic circlip with the microcephaly; It is characterized in that: the groove both sides of major part are provided with first concordant each other and vertical with the body of rod direction plane respectively; Microcephaly's convexity matches with the groove shapes of major part, and microcephaly's protruding both sides are provided with respectively with said first plane and cooperate second plane that contacts; When major part and microcephaly cooperatively interacted and be connected, microcephaly's convexity was positioned at the groove of major part, and microcephaly's convexity do not contact mutually with the fitting surface that the groove of major part matches, and first plane of both sides and second plane are in contact with one another separately.
The U-shaped door pillar that forms symmetry is stretched out along body of rod direction respectively in the groove both sides of major part, and the both ends of the surface of U-shaped door pillar are first concordant each other and vertical with the body of rod direction plane; Microcephaly's convexity near the both sides of wrist pin collar end respectively the edge direction vertical with body of rod direction stretch out the formation boss, the end face of each boss is said second plane.
The groove shapes of said major part is circular arc, square, U-shaped, V-arrangement, trapezoidal, semicircle, and is corresponding, and said microcephaly's convexity is the circular arc that matches with the groove shapes of major part, square, U-shaped, V-arrangement, trapezoidal, semicircle.
The groove both sides of described major part are connected with the root rounding off of U-shaped door pillar.
The equal correspondence of both ends of the surface same position is provided for installing the curve or the camber line locating slot of elastic circlip about said microcephaly's the convexity, and the also equal correspondence of the same position of both ends of the surface up and down of described U-shaped door pillar both sides is provided for installing the curve or the camber line locating slot of elastic circlip; Cooperatively interact when being connected major part and microcephaly, the locating slot on microcephaly's convexity and the U-shaped door pillar is in same end face mutual dislocation and not on same curve or camber line; The cross section of said locating slot is semicircle.
Said elastic circlip is two parallel up and down bars and the two-way jump ring that at one end is formed by connecting, or the bending and have the two-way jump ring of parallel U-shaped two bars up and down of taking the shape of the letter U; Said two bars all are parallel curve or arc shaped in the horizontal direction and can be embedded at respectively in the described locating slot.
Said connecting rod is applicable to refrigeration compressor.
Said connecting rod is applicable to small-sized totally-enclosed formula refrigeration compressor.
With respect to existing technology, the beneficial effect of the utility model is:
When major part and microcephaly cooperatively interacted and be connected, microcephaly's convexity was positioned at the groove of major part, and the fitting surface that microcephaly's convexity and the groove of major part match is not at a distance of certain distance, contact mutually; Major part is not at groove fit face place with microcephaly's the force part that contacts, but at first plane and the second plane contact place of the both sides of major part, the door pillar root does not exist stress to concentrate situation to this structure in the groove both sides of major part.
Secondly, stressing conditions has greatly improved than the existing body structure that divides, and when eccentric shaft promoted piston toward upper dead center motion compresses gas, the gas force F that passes over from piston end surface was broken down into F1 and the F2 in the same way with gas force F, at this moment F1=F2=1/2F.This minute, the component of force rate existing structure was little, and direction is identical with the reciprocating direction of piston-connecting rod, so the root of the both sides U-shaped door pillar of the groove of the major part situation that can not exist stress to concentrate, and the stressing conditions of major part is much improved; On the other hand; When eccentric shaft moves toward lower dead centre, elastic circlip will produce active force to microcephaly's convexity, because convexity can be circular arc, square, U-shaped, trapezoidal, semicircle; Material wants many than the v-shaped structure of existing technology; The protruding stress that can bear wants big than the existing technology v-shaped structure, and owing to both are not in contact with one another, so microcephaly's convexity is much improved at the root stressing conditions of the groove of major part.
Description of drawings
Fig. 1 is the pump housing assembling schematic representation of integrated type connecting rod compressor in the existing technology;
Fig. 2 is the pump housing assembling schematic representation of the split type connecting rod compressor of existing technology;
Fig. 3 is the structural representation of the split connecting rod among Fig. 2;
Fig. 4 is the explosive view of Fig. 3;
Fig. 5 is an embodiment's of the utility model a split bar linkage structure schematic representation;
Fig. 6 is the explosive view of Fig. 5;
Fig. 7 is the assembling schematic representation that Fig. 5 is used for the compressor pump body portion.
Embodiment
Embodiment below in conjunction with accompanying drawing 5-7 is described further the utility model, but does not limit the utility model.
The split connecting rod of the utility model comprises the connnecting rod big end 10 that is connected with bent axle 2 eccentric shafts, the connecting rod small end 11 that is connected with piston 4 and wrist pin 5, and major part 10 is connected fixing elastic circlip 12 with microcephaly 11; Along body of rod direction, the body of rod end of major part 10 is provided with groove, and microcephaly 11 body of rod end is provided with convexity; Major part 10 is connected the cooperation place and is provided with locating slot 11-3 and the 10-3 that is used to install elastic circlip 12 with microcephaly 11;
The groove of major part 10 is circular groove 10-1, and the groove both sides are stretched out along body of rod direction respectively and formed the U-shaped door pillar, and the end face of U-shaped door pillar is mutual concordant and vertical with body of rod direction two first plane 10-4; Microcephaly 11 convexity is the protruding 11-1 of U-shaped that cooperatively interacts with groove; The protruding 11-1 of U-shaped near the both sides of wrist pin collar end respectively the edge direction vertical with body of rod direction stretch out and form boss 11-2, all be provided with on each boss 11-2 and can cooperate the second plane 11-4 that contact with the said first plane 10-4; When major part 10 and microcephaly 11 cooperatively interacted and be connected, the protruding 11-1 of U-shaped was positioned at circular groove 10-1, and the cambered surface of protruding 11-1 and groove 10-1 do not contact mutually, and the first plane 10-4 and the second plane 11-4 are in contact with one another.
The root of described U-shaped door pillar is connected with the both sides rounding off of circular groove 10-1.
The equal correspondence of both ends of the surface same position is provided for installing the locating slot 11-3 of elastic circlip about the protruding 11-1 of described U-shaped; The also equal correspondence of the same position of both ends of the surface up and down of described U-shaped door pillar both sides is provided for installing the locating slot 10-3 of elastic circlip; Cooperatively interact when being connected major part 10 and microcephaly 11; U-shaped protruding with the U-shaped door pillar on locating slot 11-3 and 10-3 misplace mutually at same end face (upper-end surface or lower end surface) (preferably interlacing 20-50, also is the 0.2-0.5 millimeter), not on same curve or camber line;
Said elastic circlip 12 or the two-way jump ring up and down that takes the shape of the letter U and bend and have parallel U-shaped two bars; The up and down two-way jump ring that perhaps also can at one end connect for parallel two bars, no matter how two bars connect, and this two bar is parallel curve or camber line in the horizontal direction and can be embedded at respectively among described locating slot 11-3 and the 10-3; The cross section of said locating slot is semicircle.
As shown in Figure 5, the protruding 11-1 of the circular groove 10-1 of major part 10 and microcephaly 11 U-shaped is not at a distance of certain distance, be in contact with one another; Major part 10 is not at circular groove 10-1 place with microcephaly 11 the force part that contacts; But the second plane 11-4 on the boss of the U-shaped door pillar two first plane 10-4 of major part 10 and microcephaly 11 the protruding both sides of U-shaped contacts the end, and this structure does not exist stress to concentrate situation at major part 10 groove both sides door pillar roots.
Stressing conditions shown in Figure 5 is existing to divide body structure to have greatly improved; When the eccentric shaft of bent axle 2 promotes piston 4 toward upper dead center motion compresses gas; The gas force F that passes over from piston 4 end faces is broken down into F1 and the F2 in the same way with gas force F, at this moment F1=F2=1/2F.The existing component of body structure that divides of this minute force rate is little; And direction is identical with the reciprocating direction of piston-connecting rod; Therefore can there be the situation that stress is concentrated in the root of the both sides U-shaped door pillar of the circular groove of major part 10, and the stressing conditions of major part is much improved; On the other hand; When eccentric shaft moves toward lower dead centre, elastic circlip 12 will produce active force to the protruding 11-1 of microcephaly 11 U-shaped, because protruding 11-1 is the arcuate structure of U-shaped; Material wants many than the v-shaped structure of existing technology; The protruding stress that can bear of U-shaped wants big than existing technology, and owing to both are not in contact with one another, so microcephaly's U-shaped convexity is much improved at the root stressing conditions of circular groove.
At other is in the independent illustrated embodiment; The groove shapes of said major part 10 can also be square, U-shaped, V-arrangement, trapezoidal, semicircle; Accordingly; Square, U-shaped, the V-arrangement, trapezoidal, semicircle of said microcephaly's 11 convexity for matching with the groove shapes of major part 10, as long as the fitting surface of protruding and groove does not contact with each other, but first plane of both sides and second plane are in contact with one another and get final product.
The above disclosed preferred embodiment that is merely the utility model; Certainly can not limit the interest field of the utility model with this; Therefore the equivalence of being done according to the utility model claim changes, the protection domain that still belongs to the utility model like change that process parameter or device are made and improvement.
Claims (9)
1. a Reciprocting piston compressor split connecting rod comprises the connnecting rod big end that is connected with crankshaft eccentric shaft, the connecting rod small end that is connected with piston, and major part is connected fixing elastic circlip with the microcephaly; Along body of rod direction, groove is set in the middle of the body of rod end of major part, convexity is set in the middle of microcephaly's the body of rod end; Major part is connected the cooperation place and is provided with the locating slot that is used to install elastic circlip with the microcephaly; It is characterized in that: the groove both sides of major part are provided with first concordant each other and vertical with the body of rod direction plane respectively; Microcephaly's convexity matches with the groove shapes of major part, and microcephaly's protruding both sides are provided with respectively with said first plane and cooperate second plane that contacts; When major part and microcephaly cooperatively interacted and be connected, microcephaly's convexity was positioned at the groove of major part, and microcephaly's convexity do not contact mutually with the fitting surface that the groove of major part matches, and first plane of both sides and second plane are in contact with one another separately.
2. split connecting rod according to claim 1 is characterized in that: the U-shaped door pillar that forms symmetry is stretched out along body of rod direction respectively in the groove both sides of major part, and the both ends of the surface of U-shaped door pillar are first concordant each other and vertical with the body of rod direction plane; Microcephaly's convexity near the both sides of wrist pin collar end respectively the edge direction vertical with body of rod direction stretch out the formation boss, the end face of each boss is said second plane.
3. split connecting rod according to claim 1 and 2; It is characterized in that: the groove shapes of said major part is circular arc, square, U-shaped, V-arrangement, trapezoidal, semicircle; Accordingly, said microcephaly's convexity is the circular arc that matches with the groove shapes of major part, square, U-shaped, V-arrangement, trapezoidal, semicircle.
4. split connecting rod according to claim 1 and 2 is characterized in that: the groove both sides of described major part are connected with the root rounding off of U-shaped door pillar.
5. split connecting rod according to claim 4 is characterized in that: the groove shapes of said major part is circular arc, square, U-shaped, V-arrangement, trapezoidal, semicircle, and corresponding, said microcephaly's convex shape matches with the groove shapes of major part.
6. according to claim 1 or 2 or 5 described split connecting rods; It is characterized in that: the equal correspondence of both ends of the surface same position is provided for installing the curve or the camber line locating slot of elastic circlip about said microcephaly's the convexity, and the also equal correspondence of the same position of both ends of the surface up and down of described U-shaped door pillar both sides is provided for installing the curve or the camber line locating slot of elastic circlip; Cooperatively interact when being connected major part and microcephaly, the locating slot on microcephaly's convexity and the U-shaped door pillar is in same end face mutual dislocation and not on same curve or camber line; The cross section of said locating slot is semicircle.
7. split connecting rod according to claim 6 is characterized in that: said elastic circlip is two parallel up and down bars and the two-way jump ring that at one end is formed by connecting, or the bending and have the two-way jump ring of parallel U-shaped two bars up and down of taking the shape of the letter U; Said two bars all are parallel curve or arc shaped in the horizontal direction and can be embedded at respectively in the described locating slot.
8. according to claim 1 or 2 or 5 or 7 described split connecting rods, it is characterized in that: said connecting rod is applicable to refrigeration compressor.
9. split connecting rod according to claim 8 is characterized in that: said connecting rod is applicable to small-sized totally-enclosed formula refrigeration compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204175666U CN202300914U (en) | 2011-10-28 | 2011-10-28 | Split-type connecting rod of reciprocating piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204175666U CN202300914U (en) | 2011-10-28 | 2011-10-28 | Split-type connecting rod of reciprocating piston compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300914U true CN202300914U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204175666U Withdrawn - After Issue CN202300914U (en) | 2011-10-28 | 2011-10-28 | Split-type connecting rod of reciprocating piston compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300914U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338078A (en) * | 2011-10-28 | 2012-02-01 | 黄石东贝电器股份有限公司 | Split connecting rod of reciprocating piston compressor |
| CN106640598A (en) * | 2016-10-20 | 2017-05-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Connecting rod structure and compressor |
| CN108194493A (en) * | 2017-11-21 | 2018-06-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Link mechanism, compressor and refrigerator |
-
2011
- 2011-10-28 CN CN2011204175666U patent/CN202300914U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338078A (en) * | 2011-10-28 | 2012-02-01 | 黄石东贝电器股份有限公司 | Split connecting rod of reciprocating piston compressor |
| CN102338078B (en) * | 2011-10-28 | 2013-12-25 | 黄石东贝电器股份有限公司 | Split connecting rod of reciprocating piston compressor |
| CN106640598A (en) * | 2016-10-20 | 2017-05-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Connecting rod structure and compressor |
| CN108194493A (en) * | 2017-11-21 | 2018-06-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Link mechanism, compressor and refrigerator |
| CN108194493B (en) * | 2017-11-21 | 2023-08-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Connecting rod structure, compressor and refrigerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20131225 |
|
| RGAV | Abandon patent right to avoid regrant |