CN201723407U

CN201723407U - Full-oil-free lubrication air compressor crankshaft

Info

Publication number: CN201723407U
Application number: CN2010202874360U
Authority: CN
Inventors: 汪潜
Original assignee: ANQING BAILIAN OIL-FREE COMPRESSOR Co Ltd
Current assignee: ANQING BAILIAN OIL-FREE COMPRESSOR Co Ltd
Priority date: 2010-07-31
Filing date: 2010-07-31
Publication date: 2011-01-26
Anticipated expiration: 2020-07-31

Abstract

The utility model discloses a full-oil-free lubrication air compressor crankshaft, belonging to air compressor components. The air compressor crankshaft comprises a crankshaft, and cranks disposed at the two sides of the crankshaft, the cranks are respectively and fixedly provided with two bosses, a threaded hole is respectively disposed in the middle of the two bosses. When maintaining and dismounting a bearing of a connecting rod big end, two bolts are screwed into the threaded holes, since the bolts abut against the inner ring of the bearing, bearings of all connecting rod big ends can be conveniently dismounted via continuous screwing of the bolts. due to prevention of violent operation in dismounting process, the bearings can not be damaged due to dismounting, and the big ends of connecting rod can not be damaged, improving life of device, saving production cost, and greatly reducing labor intensity.

Description

A kind of full-oil-free lubrication air compressor crank

(1), technical field:

The utility model relates to air compressor, is specifically related to a kind of full-oil-free lubrication air compressor crank.

(2), background technique:

The full-oil-free lubrication technology obtains than widespread usage in the microminiature air compressor.So-called full-oil-free lubrication is actually main bearing on the bent axle that refers to compressor, the rolling bearing that the large and small head bearing of connecting rod all adopts lubricating grease to be lubricated, the motion Sealing adopts the fluoroplastic manufacturing with self-lubricating property in the cylinder, and complete machine lubricating oil filling in addition is lubricated.But the bearing of this compressor has the oil lubrication service life of a machine short a lot, just needs to change behind the operation certain hour, because this bearing belongs to standard piece, is all-in-one-piece, and unlike the oil lubrication machine is arranged, connecting rod bottom-end bearing is the sliding bearing of split type.Usually the way that adopts when the maintain and replace connecting rod bottom-end bearing is that iron hammer knocks, and the bearing on the crank pin is all changed; Because structure is limit, there is not the bearing of damage injured during the maintenance of this kind bent axle because of keeping in repair yet, connecting rod also might be knocked distortion, maintenance difficult, labor intensity is big, and repair quality is not high.

(3), summary of the invention:

The purpose of this utility model is to provide a kind of full-oil-free lubrication air compressor crank, and is simple in structure, and it had both reduced the labor intensity of maintenance work, again not additional injuries bearing and connecting rod.

For achieving the above object, the utility model full-oil-free lubrication air compressor crank comprises bent axle, is arranged on the crank of bent axle both sides, is fixed with two boss on the crank of bent axle both sides respectively, is respectively equipped with tapped hole in the centre of two boss.

In technique scheme, owing to be fixed with two boss on the crank of full-oil-free lubrication air compressor crank of the present utility model, be processed with tapped hole in the boss, when the repair demolition connecting rod bottom-end bearing, be screwed into tapped hole with two bolts, by the bolt extruding bearing inner race that advances, can pull down the bearing on all connnecting rod big ends easily, simultaneously can not make connecting rod and bearing injured in addition, reduce labor intensity, improve maintenance efficiency.

(4), description of drawings:

Fig. 1 is the structural representation of a kind of full-oil-free lubrication air compressor crank of the utility model;

Fig. 2 is another angle structural representation of a kind of full-oil-free lubrication air compressor crank of the utility model.

(5), embodiment:

Below in conjunction with accompanying drawing a kind of full-oil-free lubrication air compressor crank of the utility model is described in further detail:

By Fig. 1, Fig. 2 as seen, a kind of full-oil-free lubrication air compressor crank of present embodiment comprises bent axle 1, is arranged on the crank 2 of bent axle 1 both sides, is fixed with two boss 3 on the crank 2 of bent axle 1 both sides respectively, is respectively equipped with tapped hole 4 in the centre of two boss 3.When the bearing of dismounting connnecting rod big end, to be screwed into tapped hole 4 with the bolt 5 that tapped hole 4 is complementary, because bolt 5 withstands on the bearing inner race 6 of bent axle 1, by bearing spacer 7 transfer charges, constantly turn bolt 5 can all be pulled down all bearings, change as required then and decreased bearing, maintenance finishes, and unloads bolt 5, and bent axle can be installed and used.In the present embodiment, can push up inner ring 6 degree of being of the bearing on the bent axle 1 after the position of tapped hole 4 is screwed into bolt 5.Since stressed accurate in the unloading process, violences such as iron hammer knocks operation avoided, and bearing can be not impaired because of dismantling, and simultaneously connnecting rod big end sustained damage, and greatly reduce labor intensity, improved maintenance efficiency.

Claims

1. full-oil-free lubrication air compressor crank, comprise bent axle (1), be arranged on the crank (2) of bent axle (1) both sides, it is characterized in that: on the crank (2) of bent axle (1) both sides, be fixed with two boss (3) respectively, be respectively equipped with tapped hole (4) in the centre of two boss (3).