CN201517480U

CN201517480U - Sliding rod type linear reciprocating piston compressor

Info

Publication number: CN201517480U
Application number: CN2009202412674U
Authority: CN
Inventors: 陈君立; 阮勤江; 耿爱农
Original assignee: Zhejiang Hongyou Compressor Manufacturing Co Ltd
Current assignee: Zhejiang Hongyou Compressor Manufacturing Co Ltd
Priority date: 2009-11-04
Filing date: 2009-11-04
Publication date: 2010-06-30
Anticipated expiration: 2019-11-04

Abstract

The utility model discloses a sliding rod type linear piston compressor comprising an electric motor, a main shaft, a crankshaft, a crankcase, an air cylinder, a piston and a piston rod, wherein the electric motor is connected with the main shaft which is connected with the crankshaft; the piston is glidingly configured in the air cylinder; the piston and one end of the piston rod are fixedly connected or manufactured into a whole; a shaft sleeve is arranged at the middle of a forked connecting member and rotationally sleeved on the crankshaft; a guide shaft is fixedly connected with a forked arm at the other side of the connecting member; and a sliding sleeve is fixedly connected with the other end of the piston rod, is sleeved on the guide shaft and is glidingly matched with the guide shaft. The sliding rod type linear piston compressor can ensure that the piston and the piston rod do the reciprocating linear motion by using the air cylinder or the guide sleeve to restrain; and one kinematic pair is arranged on the guide shaft, so that the manufacture and the assembly are quite convenient, i.e. the manufacturing difficulty and the mounting difficulty can be effectively reduced.

Description

Sliding rod type linear reciprocating piston compressor

Technical field

The utility model belongs to the Compressor Technology field, relates to a kind of reciprocating-piston compressor, relates to a kind of sliding rod type linear reciprocating piston compressor especially.

Background technique

Chinese patent application CN200910115490.9 has provided a kind of linear reciprocating piston type compressor, its specific embodiment is seen Fig. 1 to Fig. 5, it includes motor 10, main shaft 11, bent axle 12, crankcase 13, cylinder 14, piston 15 and piston rod 16, the main shaft 11 of motor 10 is connected with bent axle 12, piston 15 is configured in the cylinder 14 slidably, piston 15 and cylinder 14 all have a pair of and divide the both sides that are located at bent axle 12, piston 15 is fastenedly connected with piston rod 16 and is one, and the Connecting format of piston rod 16 and bent axle 12 has two kinds: 1) connector element 20 is the framework of an annular, one end of described two piston rods 16 is separately fixed at the relative two ends of this connector element 20, the sidewall of connector element 20 is provided with the pilot hole perpendicular to piston rod 16, the axis of guide 30 is located in this pilot hole and is slidingly matched with it, the middle part of the axis of guide 30 is made axle sleeve structure and is sleeved on rotationally on the described bent axle 12, and this moment, the driving path of compressor was: motor 10 → bent axle 12 → axis of guide 30 → connector element 20 → piston rod 16 → piston; 2) connector element 20 is a yoke with two forks arms, this yoke is sleeved on the bent axle 12 and is rotatably assorted with it, two yokes of described yoke are provided with pilot hole, the axis of guide 30 is located in this pilot hole and is slidingly matched with it, the middle part of the axis of guide 30 is vertical cross structure with piston rod 16 and is fastenedly connected, and this moment, the driving path of compressor was: motor 10 → bent axle 12 → connector element 20 → axis of guide 30 → piston rod 16 → piston.Obviously, be straight reciprocating motion at the constraint lower piston 15 of two cylinders 14 and the motion mode of piston rod 16, avoided the swing of piston 15 thus, thereby improved sealing and reliability with respect to cylinder 14.Be not difficult to find, what the axis of guide 30 and connector element 20 adopted among the above-mentioned model utility embodiment is to be slidingly matched, especially need to adopt two pilot hole structures, that is existence needs accurately two motion matching pairs of pairing, because these two pilot holes must guarantee accurately coaxial, otherwise all can have a negative impact to installing and moving, undoubtedly, said structure has increased the manufacture difficulty and the installation difficulty of compressor.

The model utility content

The utility model provides a kind of sliding rod type linear reciprocating piston compressor, and purpose is to do under the prerequisite of straight reciprocating motion at guarantee piston and piston rod, effectively reduces the manufacture difficulty and the installation difficulty of compressor.

The purpose of this utility model is achieved in that

Sliding rod type linear reciprocating piston compressor, it comprises: motor, main shaft, bent axle, crankcase, cylinder, piston and piston rod, wherein motor can directly be connected with main shaft, also can be connected indirectly with main shaft by belt etc., described main shaft is connected with bent axle, piston is configured in the cylinder slidably, one end of described piston and piston rod is fastenedly connected or is integrally manufactured, the middle part of one forked connector element one side is provided with axle sleeve and is sleeved on the bent axle rotationally, the yoke of connector element opposite side is provided with the axis of guide, the two ends of the described axis of guide are fastenedly connected with the yoke of connector element respectively, the other end of described piston rod is fastenedly connected with sliding sleeve, and described sliding sleeve is sleeved on the axis of guide and with the axis of guide and is slidingly matched.

The above-mentioned axis of guide has one at least, and the section configuration of the axis of guide is circular, square, rectangle or triangle.

The number of above-mentioned cylinder, piston and piston rod is two, and adopt straight line to interposed structure or dislocation to interposed structure.

The number of above-mentioned cylinder, piston and piston rod is one, is fixed with a guide rod on the sliding sleeve of piston rod offside, is arranged with guide pin bushing on guide rod, and guide pin bushing is fixed on the crankcase, described guide rod and guide pin bushing and cylinder linearly opposed or the dislocation to interposed structure.

Between the above-mentioned axis of guide and sliding sleeve, be provided with rolling element between guide rod and the guide pin bushing, described rolling element is roller, roll sleeve, needle roller or ball.

The utility model sliding rod type linear reciprocating piston compressor adopt two cylinder, double-piston and double piston-rod structures and adopt straight line to interposed structure or dislocation to interposed structure, perhaps adopt single cylinder, single piston and single-piston rod structure and adopt straight line to interposed structure or the dislocation to interposed structure, therefore energy operative constraint piston and piston rod do reciprocating linear motion, owing to only have the axis of guide and this kinematic pair of sliding sleeve on the axis of guide, so it is made and be equipped all very easy, in other words effectively reduce the manufacture difficulty and the installation difficulty of compressor in this.

Description of drawings

What Fig. 1 provided is the embodiment's of Chinese patent application CN200910115490.9 axonometric drawing;

Fig. 2 is a schematic cross section embodiment illustrated in fig. 1;

What Fig. 3 provided is another embodiment's of Chinese patent application CN200910115490.9 axonometric drawing;

Fig. 4 is a schematic cross section embodiment illustrated in fig. 3;

Fig. 5 is a longitudinal section schematic representation embodiment illustrated in fig. 3;

Fig. 6 the utility model sliding rod type linear reciprocating piston compressor adopts the axonometric drawing of two cylinder double-pistons and double piston-rod structure;

Fig. 7 is the schematic cross section of the utility model sliding rod type linear reciprocating piston compressor shown in Figure 6;

Fig. 8 is the longitudinal section schematic representation of the utility model sliding rod type linear reciprocating piston compressor shown in Figure 6;

Fig. 9 be the utility model sliding rod type linear reciprocating piston compressor adopt single cylinder list piston and single-piston rod structure generalized section.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is further described, referring to Fig. 6 to Fig. 9:

Sliding rod type linear reciprocating piston compressor, it comprises: motor 10, main shaft 11, bent axle 12, crankcase 13, cylinder 14, piston 15 and piston rod 16, wherein motor 10 both can directly be connected with main shaft 11, also can be connected with main shaft 11 indirectly by belt etc., described main shaft 11 is connected with bent axle 12, piston 15 is configured in the cylinder 14 slidably, one end of described piston 15 and piston rod 16 is for being fastenedly connected or being integrally manufactured, the middle part of one forked connector element 20 1 sides is provided with axle sleeve and is sleeved on rotationally on the bent axle 12, need to prove, connector element 20 can be directly and bent axle 12 rotate contact matching and also can be rotatably assorted by bearing structure and bent axle 12, its middle (center) bearing can be that sliding bearing also can be other various rolling bearings; The yoke of connector element 20 opposite sides is provided with the axis of guide 30, the described axis of guide 30 is one, certainly, the axis of guide 30 more than one also can be set as required, the section configuration of the axis of guide 30 is circular, certainly, also can be square, other geometrical shape such as rectangle or triangle, the two ends of the described axis of guide 30 are fastenedly connected with the yoke of connector element 20 respectively, the other end of described piston rod 16 is fastenedly connected with sliding sleeve 31, described sliding sleeve 31 is fastenedly connected with described piston rod 16 or with they integral productions, described sliding sleeve 31 is sleeved on the axis of guide 30 and with the axis of guide 30 and is slidingly matched, it must be noted that the axis of guide 30 and the axis of cylinder 14 can vertically be provided with also can the out of plumb setting, wherein vertically to be set to the best; Need to prove, cylinder 14 of the present utility model, the number of piston 15 and piston rod 16 can also can be one for two, when it adopts two cylinder double-pistons and double piston-rod structure, two groups of cylinders 14, piston 15 and piston rod 16 can be straight lines to interposed structure or dislocation to interposed structure, and be arranged in the both sides of bent axle 12, the opposed axis coaxle setting (allowing to exist certain foozle and alignment error) that is meant two cylinders 14 of so-called straight line, the axis that so-called dislocation is opposed to be meant two cylinders 14 is parallel to each other but does not overlap (allowing to exist certain foozle and alignment error), when it adopts single cylinder list piston and single-piston rod structure, for the determinacy that guarantees to move, on the sliding sleeve 31 of piston rod 16 offsides, be fixed with a guide rod 32, on guide rod 32, be arranged with guide pin bushing 33, guide pin bushing 33 is slidingly matched with guide rod 32, guide pin bushing 33 is fixed on the crankcase 13, similarly described guide rod 32 and guide pin bushing 33 with cylinder 14 linearly opposed or dislocation to interposed structure; Special needs to be pointed out is, in order to reduce friction, can between the above-mentioned axis of guide 30 and sliding sleeve 31, rolling element 34 be set, rolling element 34 can be retrained by sliding sleeve 31 and move (as shown in the figure) with sliding sleeve 31, also can be subjected to the axis of guide 30 constraint and with the axis of guide 30 motion (not shown)s, similarly also rolling element can be set between guide rod 32 and guide pin bushing 33, described rolling element is roller, roll sleeve, needle roller or ball.

The utility model sliding rod type linear reciprocating piston compressor adopt two cylinder, double-piston and double piston-rod structures and adopt straight line to interposed structure or dislocation to interposed structure, perhaps adopt single cylinder, single piston and single-piston rod structure and adopt straight line to interposed structure or the dislocation to interposed structure, therefore energy operative constraint piston 15 and piston rod 16 do reciprocating linear motion, owing on the axis of guide 30, only have the axis of guide 30 and sliding sleeve 31 these kinematic pair, so it is made and be equipped all very easy, in other words can effectively reduce the manufacture difficulty and the installation difficulty of compressor.

The foregoing description only is one of preferred embodiment of the present utility model; be not to limit protection domain of the present utility model according to this; so: all various equivalences of doing according to structure of the present utility model, shape and principle change, and all should be covered by within the protection domain of the present utility model.

Claims

1. sliding rod type linear reciprocating piston compressor, comprise: motor, main shaft, bent axle, crankcase, cylinder, piston and piston rod, wherein motor is connected with main shaft, main shaft is connected with bent axle, piston is configured in the described cylinder slidably, one end of piston and piston rod is fastenedly connected or is integrally manufactured, the middle part of one forked connector element one side is provided with axle sleeve and is sleeved on the bent axle rotationally, the yoke of connector element opposite side is provided with the axis of guide, the two ends that it is characterized in that the described axis of guide are fastenedly connected with the yoke of connector element respectively, the other end of described piston rod is fastenedly connected with sliding sleeve, and described sliding sleeve is sleeved on the axis of guide and with the axis of guide and is slidingly matched.

2. sliding rod type linear reciprocating piston compressor according to claim 1 is characterized in that the described axis of guide has one at least, and the section configuration of the axis of guide is circular, square, rectangle or triangle.

3. sliding rod type linear reciprocating piston compressor according to claim 2, the number that it is characterized in that described cylinder, piston and piston rod is two, and adopt straight line to interposed structure or dislocation to interposed structure.

4. sliding rod type linear reciprocating piston compressor according to claim 3 is characterized in that being provided with rolling element between the axis of guide and sliding sleeve, and described rolling element is roller, roll sleeve, needle roller or ball.

5. sliding rod type linear reciprocating piston compressor according to claim 2, the number that it is characterized in that cylinder, piston and piston rod is one, be fixed with a guide rod on the sliding sleeve of piston rod offside, on guide rod, be arranged with guide pin bushing, guide pin bushing is fixed on the crankcase, described guide rod and guide pin bushing and cylinder linearly opposed or the dislocation to interposed structure.

6. sliding rod type linear reciprocating piston compressor according to claim 5 is characterized in that being provided with rolling element between the axis of guide and the sliding sleeve and between guide rod and the guide pin bushing, and described rolling element is roller, roll sleeve, needle roller or ball.