CN2233997Y

CN2233997Y - Planetary gearing mechanism compressor

Info

Publication number: CN2233997Y
Application number: CN 95202390
Authority: CN
Inventors: 李勤章; 祝贵全
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-25
Filing date: 1995-01-25
Publication date: 1996-08-28
Anticipated expiration: 2005-01-25

Abstract

The utility model relates to a planetary gearing mechanism compressor, comprising a housing (1), more than two air cylinders (5 a), (5 b) and more than two connecting rods (6 a), (6 b), and also comprising a main shaft (7) with more than one eccentric shaft (7 a), more than one bearing (8), etc. The utility model adopts the structure that the air cylinders of the compressor are radially arranged on the housing, and two air cylinders are as one group. The main shaft (7) with the eccentric shaft (7 a) and the standard component bearing (8) which are easy to process are taken as agearing member. The utility model has the advantages of compact structure, easy production, convenient maintenance and low cost.

Description

Planetary driving mechanism compressor

The utility model relates to compressor.

Its mechanical transmission mechanism of compressor of multi-cylinder in the prior art (promptly more than two cylinders) does not generally adopt bent axle to drive piston type and adopts the swash plate drive in the form of piston.Tracing it to its cause, mainly is in order to reduce the volume of compressor.Compressor with two cylinders is an example, drive is in the form of piston if the mechanical transmission mechanism in the compressor is bent axle, at this moment, these two cylinders are generally on compressor housing axially and place side by side, and produced like this its volume of compressor is almost than adopting swash plate to drive in the form of piston being twice.Though swash plate drives the compressor of piston type driving mechanism has that volume is little, mechanical structure is than advantages such as compactnesses, it also exists following deficiency.Compare with bent axle as the swash plate in the driving mechanism, the material requirements of swash plate is very high, and machining is also very complicated, and, must make or introduce specialized apparatus specially and carry out processing, like this, cost for manufacturing compressor is just very high.Generally speaking, to drive its manufacture cost of compressor in the form of piston be that bent axle drives and in the form of pistonly to exceed one to the twice than mechanical transmission mechanism to swash plate.

The purpose of this utility model is that the mechanical transmission mechanism to compressor improves, and not only mechanical structure is simple, easy to manufacture, easy to maintenance to make compressor, but also volume is little and compact overall structure.

The said planetary driving mechanism compressor of the utility model is such.Identical with prior art is, it also comprises housing, the end cap of being with cavity, the end cap bearing, and plural cylinder and the connecting rod more than two, said end cap bearing is installed on the end cap, and end cap is fixed on the two ends of housing by fastening piece.Different with prior art is that the utility model also comprises with the main shaft of an above eccentric shaft and more than one bearing.The utility model is two cylinders, two connecting rods, and it is one group that a bearing and an eccentric shaft are compiled, and be that the center radially direct is arranged on the housing with two cylinders with the mid point of the cross section of housing, and the angle between these two cylinder-bore axises is about an angle of 90 degrees.The inner ring of bearing is sleeved on the eccentric shaft of main shaft, and the two ends of main shaft are installed in the end-cover axle on the end cap, and the piston in two connecting rod one ends and the cylinder is hinged, and the outer ring of its other end and bearing is hinged.

Its mechanically operated principle of compressor with said structure is: be installed on the main shaft autorotation under the drive of external force in the end cap upper end cap bearing, at this moment, the axle center of eccentric shaft will rotate round the axle center of main shaft and the inner ring of bearing also along with the axle center rotation of eccentric shaft, because the outer ring of bearing is hinged by connecting rod and piston, be subjected to their restriction during motion, therefore can not rotation, and can only be whole along with doing corresponding deflection round the axle center of main shaft in the axle center of eccentric shaft, at this moment, the outer ring of bearing has just driven the piston that is arranged at the cylinder on the housing by connecting rod and has carried out reciprocal straight line motion in the spindle axis rotating process.

The utility model has the advantages that, because having adopted cylinder of compressor is one group of radially setting on the cross section of housing with two, rather than along the structure that axially is set up in parallel of compressor housing, therefore driving compressor in the form of piston with bent axle compares the little and compact structure of its volume.In addition, because the transmission shaft in the compressor driving mechanism adopts is the main shaft of the band eccentric shaft that can process by common machinery, and adopted this standard piece of bearing to make transmission idol part between the gentle cylinder of main shaft, need complicated and expensive special device and very high technical requirements and material requirements like that and need not seemingly to make the swash plate parts, thereby drive compressor in the form of piston with swash plate and compare, it is simple in structure again, easy to manufacture, easy to maintenance and with low cost.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the cross sectional representation of the said compressor of the utility model.

Fig. 2 is the axial partial schematic diagram of compressor.

In the accompanying drawing, the 1st, housing, the 2nd, drive wheel, the 3rd, end cap, the 4th, the end cap bearing, 5a, 5b are cylinders, 6a, 6b are connecting rods, the 7th, main shaft, the eccentric shaft on the 7a main shaft 7, the 8th, bearing.The end cap 3 on the left side and end cap bearing 4 do not draw in the figure among Fig. 2.

See also Fig. 1, Fig. 2.The utility model comprises the housing 1 of being with cavity, end cap 3, and end cap bearing 4, plural cylinder 5a and 5b, connecting rod 6a and 6b more than two are with main shaft 7 and the more than one bearing 8 of an above eccentric shaft 7a.End cap bearing 4 is installed on the end cap 3, and end cap 3 is fixed on the two ends of housing 1 by fastening piece.With two cylinder 5a, 5b wherein, two connecting rod 6a, 6b, it is one group that a bearing 8 and an eccentric shaft 7a compile.Is that the center radially direct is arranged on the housing 1 with two cylinder 5a, 5b with the mid point of the cross section of housing 1, and the angle between these two cylinder 5a, 5b axis is about an angle of 90 degrees.The inner ring of said bearing 8 is sleeved on the eccentric shaft 7a of main shaft 7.The two ends of main shaft 7 are installed in the end cap bearing 4 on the end cap 3.Said connecting rod 6a and 6b one end respectively with cylinder 5a, 5b in piston be hinged, the outer ring of its other end and bearing 8 is hinged.Bearing 8 preferably adopts the roller type bearing, with the stronger pressure load of burden.For making things convenient for bearing and connecting rod to be hinged, on the outer ring of bearing 8, preferably fixedly install a bearing support 9 earlier, connecting rod 6a, 6b and this bearing support 9 are hinged.

Fig. 2 has illustrated simultaneously the situation when compressor is 4 cylinders again.It is two groups, every group except that be provided with in a manner mentioned above be connected, group with organize between axially being arranged side by side then along compressor housing 1.

Claims

A kind of planetary driving mechanism compressor, comprise the housing (1) of being with cavity, end cap (3), end cap bearing (4), plural cylinder (5a), connecting rod (6a) (5b) and more than two, (6b) etc., said end cap bearing (4) is installed on the end cap (3), end cap (3) is fixed on the two ends of housing (1) by fastening piece, it is characterized in that, it also comprises with the main shaft (7) of an above eccentric shaft (7a) and more than one bearing (8), with two cylinders (5a) wherein, (5b), two connecting rods (6a), (6b), it is one group that a bearing (8) and an eccentric shaft (7a) are compiled, with two cylinders (5a), (5b) mid point with the cross section of housing (1) is that the center radially direct is arranged on the housing (1), and these two cylinders (5a), angle (5b) is about an angle of 90 degrees, the inner ring of said bearing (8) is sleeved on the eccentric shaft (7a) of main shaft (7), the two ends of main shaft (7) are installed in the end cap bearing (4) on the end cap (3), said connecting rod (6a) and (6b) the one end respectively with cylinder (5a), (5b) Nei piston is hinged, and the outer ring of its other end and bearing (8) is hinged.