CN203906222U - Piston compressor - Google Patents
Piston compressor Download PDFInfo
- Publication number
- CN203906222U CN203906222U CN201420339928.8U CN201420339928U CN203906222U CN 203906222 U CN203906222 U CN 203906222U CN 201420339928 U CN201420339928 U CN 201420339928U CN 203906222 U CN203906222 U CN 203906222U
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- CN
- China
- Prior art keywords
- attrition
- axle sleeve
- piston
- receiving bore
- crankshaft eccentric
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a piston compressor which comprises a piston (10), a piston rod (20), a crankshaft (30) and a wear reduction assembly, wherein the piston rod (20) is pivoted with the piston (10); the crankshaft (30) is provided with a crankshaft eccentric part (31); a sleeving part (21) arranged at the crankshaft eccentric part (31) in a sleeving manner is arranged at the free end of the piston rod (20) and comprises an accommodating hole (22) for accommodating the crankshaft eccentric part (31); the wear reduction assembly comprises a wear reduction shaft sleeve (40) defined by oppositely moving two opposite side edges (41) of a plate and has a natural state in which the two relative side edges (41) are mutually spaced in the circumferential direction and a mounting state in which the wear reduction shaft sleeve (40) is located in the accommodating hole (22) and arranged at the crankshaft eccentric part (31) in a sleeving manner; and the friction coefficient of the inner surface of the wear reduction shaft sleeve (40) is smaller than that of the wall of the accommodating hole (22). The piston compressor has lower friction loss.
Description
Technical field
The utility model relates to Compressor Technology field, in particular to a kind of piston compressor.
Background technique
At present, as depicted in figs. 1 and 2, the moving element structure of piston compressor mainly comprise cylinder block 10 ', bent axle 20 ', piston 30 ', piston rod 40 ' and wrist pin 31 ', bent axle 20 ' have crankshaft eccentric portion 21 ' and crank spindle portion 22 ', piston rod 40 ' by wrist pin 31 ' with piston 30 ' be connected pivotly, piston rod 40 ' free end on be provided with sleeve 41 ', sleeve 41 ' be set in crankshaft eccentric portion 21 ' on.Bent axle 20 ' be arranged on cylinder block 10 ' bearing hole in, piston 30 ' be installed on cylinder block 10 ' cylinder hole in, crank spindle portion 22 ' be connected with rotor interference, and being rotated by driven by motor, by bent axle 20 ' rotarily drive piston 30 ' to-and-fro motion, and then realize the function of pressurized gas.Because piston compressor is in the time working, sleeve 41 ' with crankshaft eccentric portion 21 ' can produce relative rotation, due to odjective cause (for example sleeve 41 ' with crankshaft eccentric portion 21 ' material be cast iron), sleeve 41 ' with crankshaft eccentric portion 21 ' friction factor larger, and then cause frictional force between the two larger, improve frictional loss, increase the operating noise of piston compressor, improve reversing impact, reduced the performance of piston compressor and the reliability of piston compressor friction pair.
Model utility content
The utility model aims to provide a kind of piston compressor with lower frictional loss.
To achieve these goals, the utility model provides a kind of piston compressor, comprising: piston; Piston rod, is connected pivotly with piston; Bent axle, there is crankshaft eccentric portion, the free end of piston rod has the sleeved part being set in crankshaft eccentric portion, sleeved part has the receiving bore that holds crankshaft eccentric portion, anti-attrition part, comprise by two of sheet material relative side margins and moving in opposite directions and the anti-attrition axle sleeve that surrounds, anti-attrition axle sleeve have two side margins week upwards each interval nature and be positioned at receiving bore and be set in the installment state in crankshaft eccentric portion, the friction factor of the internal surface of anti-attrition axle sleeve is less than the friction factor of the hole wall of receiving bore.
Further, when anti-attrition axle sleeve is during in installment state, two side margins contact so that anti-attrition axle sleeve forms annular enclosed structure.
Further, two side margins are parallel to each other.
Further, sheet material comprises: substrate; Be arranged on the lip-deep anti-attrition layer of substrate, when anti-attrition axle sleeve is during in installment state, anti-attrition layer is between crankshaft eccentric portion and substrate, and the friction factor of anti-attrition layer is less than the friction factor of the hole wall of receiving bore.
Further, receiving bore is through hole, and the axial length of anti-attrition axle sleeve is greater than the degree of depth of receiving bore and is less than the axial length of crankshaft eccentric portion.
Further, when anti-attrition axle sleeve is during in installment state, anti-attrition axle sleeve and receiving bore are fixed in this receiving bore to realize this anti-attrition axle sleeve by the mode of interference fit.
Further, when anti-attrition axle sleeve is during in installment state, this anti-attrition axle sleeve and crankshaft eccentric portion have radial clearance.
Application the technical solution of the utility model, owing to being provided with anti-attrition axle sleeve between crankshaft eccentric portion and sleeved part, and the friction factor of the internal surface of anti-attrition axle sleeve is less than the friction factor of the hole wall of receiving bore, therefore the frictional force that crankshaft eccentric portion and sleeved part produce can reduce, and then has reduced the operating noise of piston compressor.As the above analysis, piston compressor of the present utility model has lower frictional loss.
Brief description of the drawings
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the partial structurtes of piston compressor in prior art;
Fig. 2 shows the decomposing schematic representation of the part of the structure of Fig. 1;
Fig. 3 shows according to the schematic diagram of the embodiment's of piston compressor of the present utility model partial structurtes;
Fig. 4 shows the decomposing schematic representation of the part of the structure of Fig. 3;
Fig. 5 shows longitudinal cross-sectional schematic of the anti-attrition axle sleeve in Fig. 4.
Wherein, the reference character in above-mentioned figure is as follows:
10, piston; 20, piston rod; 21, sleeved part; 22, receiving bore; 30, bent axle; 31, crankshaft eccentric portion; 32, crank spindle portion; 40, anti-attrition axle sleeve; 41, side margins; 42, substrate; 43, anti-attrition layer.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figures 3 to 5, the piston compressor of the present embodiment comprises piston 10, piston rod 20, bent axle 30 and anti-attrition part.Piston rod 20 is connected pivotly with piston 10.Bent axle 30 has crankshaft eccentric portion 31 and crank spindle portion 32, and the free end of piston rod 20 has the sleeved part 21 being set in crankshaft eccentric portion 31, and sleeved part 21 has the receiving bore 22 that holds crankshaft eccentric portion 31.Anti-attrition part comprises by two of sheet material relative side margins 41 and moving in opposite directions and the anti-attrition axle sleeve 40 that surrounds, anti-attrition axle sleeve 40 have two side margins 41 week upwards each interval nature and be positioned at receiving bore 22 and be set in the installment state in crankshaft eccentric portion 31, the friction factor of the internal surface of anti-attrition axle sleeve 40 is less than the friction factor of the hole wall of receiving bore 22.As shown in the above, anti-attrition axle sleeve 40 is not always in annular enclosed structure, and nature refers to the state that is not subject to external force, and under this state, anti-attrition axle sleeve 40 is nonocclusive ring structure.It should be noted that, side margins 41 can be line structure or face structure, and for example, when the sidepiece of sheet material is plane, side margins 41 is face structure, and when the sidepiece of sheet material is cambered surface or two faces while intersecting, side margins 41 is line structure.Preferably, the friction factor of anti-attrition axle sleeve 40 is 0.01 to 0.1, than conventional cast iron materials, can reduce by 30% frictional loss.Sheet material can be integrated, also can be welded by multiple sheet material.
The piston compressor of application the present embodiment, owing to being provided with anti-attrition axle sleeve 40 between crankshaft eccentric portion 31 and sleeved part 21, and the friction factor of the internal surface of anti-attrition axle sleeve 40 is less than the friction factor of the hole wall of receiving bore 22, therefore the frictional force that crankshaft eccentric portion 31 and sleeved part 21 produce can reduce, and then has reduced the operating noise of piston compressor.As the above analysis, the piston compressor of the present embodiment has lower frictional loss, and has reduced reversing impact simultaneously, has reduced operating noise, has improved the performance of piston compressor and the reliability of piston compressor friction pair.In addition, anti-attrition axle sleeve 40 is moved in opposite directions and is surrounded by two of sheet material relative side margins 41, and anti-attrition axle sleeve 40 have two side margins 41 week upwards each interval nature and be positioned at receiving bore 22 and be set in the installment state in crankshaft eccentric portion 31, therefore, only need apply chucking power to the anti-attrition axle sleeve 40 under in the raw, can drive two relative side margins 41 to move in opposite directions, anti-attrition axle sleeve 40 inwardly shrinks, and then reduce the area that anti-attrition axle sleeve 40 surrounds, so just can easily anti-attrition axle sleeve 40 be arranged in receiving bore 22, that is to say, be convenient to install anti-attrition axle sleeve 40.
As shown in Figure 3 and Figure 4, in the present embodiment, when anti-attrition axle sleeve 40 is during in installment state, two side margins 41 contact so that anti-attrition axle sleeve 40 forms annular enclosed structure.Adopt said structure, can prevent that lubricant oil from affecting lubrication effect from revealing between two side margins 41.
As shown in Figure 3 and Figure 4, in the present embodiment, receiving bore 22 is through hole, and the axial length of anti-attrition axle sleeve 40 is greater than the degree of depth of receiving bore 22 and is less than the axial length of crankshaft eccentric portion 31.Adopt said structure, anti-attrition axle sleeve 40 and sleeved part 21 can asymmetricly be installed in the axial direction, to improve the stressing conditions of crankshaft eccentric portion 31.
As shown in Figure 3, in the present embodiment, when anti-attrition axle sleeve 40 is during in installment state, anti-attrition axle sleeve 40 is fixed in this receiving bore 22 to realize this anti-attrition axle sleeve 40 by the mode of interference fit with receiving bore 22.When anti-attrition axle sleeve 40 is during in installment state, the chucking power being applied on anti-attrition axle sleeve 40 just can be removed, anti-attrition axle sleeve 40 relies on the elasticity of self and expands outwardly and support on the hole wall of receiving bore 22, to form interference fit, therefore anti-attrition axle sleeve 40 can be arranged in this receiving bore 22 without extra increase fixing device or limit stoper.
As shown in Figure 3, in the present embodiment, when anti-attrition axle sleeve 40 is during in installment state, this anti-attrition axle sleeve 40 has radial clearance with crankshaft eccentric portion 31.Adopt said structure, piston compressor is in the time of work, and anti-attrition axle sleeve 40 can more easily produce relative movement with crankshaft eccentric portion 31, further reduces frictional force.
As shown in Figure 5, in the present embodiment, sheet material comprises substrate 42 and is arranged on the lip-deep anti-attrition layer 43 of substrate 42.When anti-attrition axle sleeve 40 is during in installment state, anti-attrition layer 43 is between crankshaft eccentric portion 31 and substrate 42, and the friction factor of anti-attrition layer 43 is less than the friction factor of the hole wall of receiving bore 22.Anti-attrition layer 43 is the internal surface of anti-attrition axle sleeve 40, and anti-attrition axle sleeve 40 can be made up of the material of bi-material, and various materials can play respectively different effects, and for example substrate 42 provides reliable intensity, and anti-attrition layer 43 provides less friction factor.
As shown in Figure 5, in the present embodiment, two side margins 41 are parallel to each other.Two side margins 41 that are parallel to each other are in when contact, can be closed tighter, further avoid oil leakage.Edge, both sides 41 is plane, in the time of plane contact, can be closed tighter, further avoid oil leakage.
As shown in Figure 5, in the present embodiment, substrate 42 is metal substrate.Metal substrate has reliable intensity.
As shown in Figure 5, in the present embodiment, anti-attrition layer 43 is PTFE resin.Anti-attrition layer 43 can be also Cuprum alloy, or is to be formed by Cuprum alloy and PTFE resin combination.
The application also provides the method (not shown) of the anti-attrition part in a kind of piston compressor of manufacturing above-described embodiment, and the manufacture method of the present embodiment comprises step S20, by sheet material roll-forming to form anti-attrition axle sleeve.Certainly, also can adopt other molding modes.
In the manufacture method of the present embodiment, sheet material comprises substrate and is positioned at the anti-attrition layer of substrate inner side, also comprises step S10 before step S30, on the surface of substrate, applies antifriction material to form anti-attrition layer.That is to say, before roll-forming, on the surface of substrate, apply antifriction material.
In the manufacture method of the present embodiment, anti-attrition layer comprises metal layer and resin layer, and step S10 is further comprising the steps, step S11, on the surface of substrate, add metallic dust, step S12, carries out sintering, step S13 to metallic dust, the metallic dust after sintering is carried out to compacting smooth to form metal layer, step S14, on metal layer, coated with resins, to form resin layer, and is carried out sintering to this resin layer.Adopt said method, metal layer and resin layer can be fixed on substrate more firmly.
In the manufacture method of the present embodiment, substrate is metal substrate, and metallic dust is copper alloy powder, and resin is PTFE resin.Before step S10, to clean activation to applying the substrate surface of antifriction material, after step S14 and step S20 will to sheet material carry out shaping and cutting.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a piston compressor, comprising:
Piston (10);
Piston rod (20), is connected pivotly with described piston (10);
Bent axle (30), there is crankshaft eccentric portion (31), the free end of described piston rod (20) has the sleeved part (21) being set in described crankshaft eccentric portion (31), described sleeved part (21) has the receiving bore (22) that holds described crankshaft eccentric portion (31), it is characterized in that, described piston compressor also comprises:
Anti-attrition part, the anti-attrition axle sleeve (40) that comprises the side margins relative by two of sheet material (41) to move in opposite directions and to surround, described anti-attrition axle sleeve (40) have described two side margins (41) week upwards each interval nature and be positioned at described receiving bore (22) and be set in the installment state in described crankshaft eccentric portion (31), the friction factor of the internal surface of described anti-attrition axle sleeve (40) is less than the friction factor of the hole wall of described receiving bore (22).
2. piston compressor according to claim 1, it is characterized in that, when described anti-attrition axle sleeve (40) is during in installment state, described two side margins (41) contact so that described anti-attrition axle sleeve (40) forms annular enclosed structure.
3. piston compressor according to claim 1, is characterized in that, described two side margins (41) are parallel to each other.
4. piston compressor according to claim 1, is characterized in that, described sheet material comprises:
Substrate (42);
Be arranged on the lip-deep anti-attrition layer (43) of described substrate (42), when described anti-attrition axle sleeve (40) is during in installment state, described anti-attrition layer (43) is positioned between described crankshaft eccentric portion (31) and described substrate (42), and the friction factor of described anti-attrition layer (43) is less than the friction factor of the hole wall of described receiving bore (22).
5. piston compressor according to claim 1, it is characterized in that, described receiving bore (22) is through hole, and the axial length of described anti-attrition axle sleeve (40) is greater than the degree of depth of described receiving bore (22) and is less than the axial length of described crankshaft eccentric portion (31).
6. piston compressor according to claim 4, it is characterized in that, when described anti-attrition axle sleeve (40) is during in installment state, described anti-attrition axle sleeve (40) is fixed in this receiving bore (22) to realize this anti-attrition axle sleeve (40) by the mode of interference fit with described receiving bore (22).
7. piston compressor according to claim 1, is characterized in that, when described anti-attrition axle sleeve (40) is during in installment state, this anti-attrition axle sleeve (40) has radial clearance with described crankshaft eccentric portion (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420339928.8U CN203906222U (en) | 2014-06-23 | 2014-06-23 | Piston compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420339928.8U CN203906222U (en) | 2014-06-23 | 2014-06-23 | Piston compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906222U true CN203906222U (en) | 2014-10-29 |
Family
ID=51780506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420339928.8U Expired - Fee Related CN203906222U (en) | 2014-06-23 | 2014-06-23 | Piston compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906222U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298796A (en) * | 2014-06-23 | 2016-02-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston compressor and manufacturing method for abrasion reduction piece in piston compressor |
-
2014
- 2014-06-23 CN CN201420339928.8U patent/CN203906222U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298796A (en) * | 2014-06-23 | 2016-02-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston compressor and manufacturing method for abrasion reduction piece in piston compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20210623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |