CN209414419U - A kind of oilless air compressor connecting rod swing needle bearing assemblies - Google Patents
A kind of oilless air compressor connecting rod swing needle bearing assemblies Download PDFInfo
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- CN209414419U CN209414419U CN201820917748.1U CN201820917748U CN209414419U CN 209414419 U CN209414419 U CN 209414419U CN 201820917748 U CN201820917748 U CN 201820917748U CN 209414419 U CN209414419 U CN 209414419U
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- needle
- piston pin
- connecting rod
- solid piston
- air compressor
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Abstract
The utility model belongs to machinery field, in particular to a kind of oilless air compressor connecting rod swing needle bearing assemblies, technology used by the utility model are as follows: be located in the cages for needle including solid piston pin, the outer collar being sheathed on the solid piston pin, the needle roller between the solid piston pin and outer collar, the cages for needle between the solid piston pin and outer collar, the needle roller.Interior rollaway nest of the solid piston pin as needle roller is entity structure, and surface is specially treated, improves hardness, intensity is higher, avoids the generation of impression under shock loading；Solid piston pin reduces compared to its internal diameter of hollow piston pin, thus needle roller enlarged diameter, bearing capacity are stronger.
Description
Technical field
The utility model belongs to machinery field, in particular to a kind of oilless air compressor connecting rod swing needle bearing assemblies.
Background technique
Four the cylinder piston formula oilless air compressors, as its name suggests, there are four cylinders altogether, are symmetrically distributed in motor both ends two-by-two, by
Electric machine main shaft drives.Compact-sized compared to conventional types, small in size, light-weight, manufacturing cost is low.In same timeliness,
1.5-2.0 times up to common air compressor machine of pressure；And under same energy consumption, keep pressure constant, gas velocity degree is taken to promote about 1.5
Times, it largely solves the problems, such as that existing air compressor structure is complicated and compression efficiency is low, embodies energy-efficient theory.
And due to Environmental Factors, four cylinders will replace tradition to have oily mode, are widely used in the fields such as new-energy automobile without oil machine.Its work
Principle is as follows: by motor drive, driving crank operating, crank handle turns connecting rod and piston pump, to realize air
Compression.The utility model is illustrated mainly for piston end needle bearing assemblies, and the structure of the prior art includes: by piston
Ring, piston, oil sealing, needle bearing, hollow piston pin, connecting rod composition, needle bearing and connecting rod are interference fitted, and two sides are respectively pressed into
Oil sealing, piston pin serves as needle bearing interior rollaway nest, and connect with two hole of piston.
Due to four cylinder oilless air compressors relative to common air compressor machine more efficient, power ascension, and it is traditional having is glossy
Cunning is changed to oil-free lubrication, thus the carrying of piston end also just increases accordingly.As the main load bearing component of piston end, needle bearing
Structure will face bigger test.There is the following aspects in existing needle bearing assemblies structure:
1), needle bearing bears reciprocating impact load, and the hardness of piston pin is lower than needle roller hardness, and piston pin be it is hollow,
Needle roller forms impression in pin surface, influences the running accuracy of bearing；
2), since connecting rod outer dimension is fixed, two sides want interference to install oil sealing in addition, therefore the length of needle roller is defined,
Longer stress contact surface, thus bearing capacity Shortcomings can not be formed；
3), since needle bearing is without sealing, it is unfavorable for the preservation of lubricating grease, is easy to make the oil-poor operating of bearing, temperature rise is higher,
Shorten bearing life；
4), existing needle bearing is calculated through ROMAX stress analysis and service life, is only capable of reaching 9900h or so, is unable to satisfy setting
Service life requirement.
Utility model content
The purpose of this utility model is to provide a kind of compact-sized, oil-free pneumatics of the stronger included sealing of bearing capacity
Machine connecting rod swing needle bearing assemblies.
In order to achieve the above object, technology used by the utility model are as follows: a kind of oilless air compressor is rolled with connecting rod swing
Needle shaft bearing assembly, including solid piston pin, the outer collar being sheathed on the solid piston pin, be located at the solid piston pin with
Needle roller between outer collar, the cages for needle between the solid piston pin and outer collar, the needle roller are located at institute
In the cages for needle stated.Interior rollaway nest of the solid piston pin as needle roller is entity structure, and surface is specially treated, is improved hard
Degree, intensity is higher, avoids the generation of impression under shock loading；Solid piston pin reduces compared to its internal diameter of hollow piston pin,
Thus needle roller enlarged diameter, bearing capacity are stronger.
Two edges of the inside of outer collar described in the utility model are equipped with dustproof groove, and the dustproof groove is equipped with close
Sealing.Bearing carries sealing element, thus outer collar width is increased, and roller length is also increase accordingly, and face loaded is longer, punching
It hits under load more steadily, included sealing element can also prestore lubricating grease, ensure that the lubrication of fast state lower bearing.Lubricating grease
For Perfluoropolyether lubricating grease, with the small characteristic of solid additive and volatility, it can be achieved that the carefree lubrication of heavily loaded occasion.
The sealing element in the utility model is FKM material sealing element.Sealing element uses FKM material, Applicable temperature-
30~230 DEG C, adapt to worst hot case.
Cages for needle described in the utility model is whole cages for needle.
The diameter of needle roller described in the utility model is 3.5mm, length 17.2mm.
The utility model beneficial effect has that compact-sized, bearing capacity is stronger, high lubricating effect, long service life, specifically
Are as follows:
A), solid piston pin is entity structure, and surface is specially treated, improves hardness, and intensity is higher, avoids impact and carries
The generation of impression under lotus；
B), solid piston pin internal diameter reduces, and roller diameter increases, and bearing capacity is stronger；
C), sealing element is carried, thus outer collar width is increased, roller length is also increase accordingly, and face loaded is longer,
It is more steady under shock loading；
D), sealing element is carried, lubricating grease can be prestored, ensure that the lubrication of fast state lower bearing；
E), sealing element uses FKM material, and Applicable temperature -30~230 DEG C adapt to worst hot case；
F), using Perfluoropolyether lubricating grease, with the small characteristic of solid additive and volatility, it can be achieved that heavily loaded occasion
Carefree lubrication.
G), through ROMAX network analysis, the service life up to 32500h, considerably beyond design requirement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of specific embodiment of the present invention.
Specific embodiment
A kind of oilless air compressor connecting rod swing needle bearing assemblies as shown in Figure 1, including solid piston pin 1, be sheathed on
Outer collar 2 on the solid piston pin 1, is located at the reality at the needle roller 3 between the solid piston pin 1 and outer collar 2
The be indecisive and changeable cages for needle 4 between plug pin 1 and outer collar 2, the needle roller 3 is located in the cages for needle 4.Solid work
Interior rollaway nest of the plug pin as needle roller is entity structure, and surface is specially treated, improves hardness, and intensity is higher, avoids impact and carries
The generation of impression under lotus；Solid piston pin reduces compared to its internal diameter of hollow piston pin, thus needle roller enlarged diameter, bearing capacity
It is stronger.
Two edges of the inside of outer collar 2 described in the utility model are equipped with dustproof groove 2-1, the dustproof groove 2-1
It is equipped with sealing element 5.Bearing carries sealing element, thus outer collar width is increased, and roller length is also increase accordingly, loaded
Face is longer, and more steady under shock loading, included sealing element can also prestore lubricating grease, ensure that the profit of fast state lower bearing
It is sliding.Lubricating grease is Perfluoropolyether lubricating grease, with solid additive and the small characteristic of volatility, it can be achieved that heavily loaded occasion it is carefree
Lubrication.
The sealing element 5 in the utility model is FKM material sealing element.Sealing element uses FKM material, applicable for temperature
- 30~230 DEG C of degree adapts to worst hot case.
Cages for needle 4 described in the utility model is whole cages for needle.
The diameter of needle roller 3 described in the utility model is 3.5mm, length 17.2mm.
Connecting rod swing needle bearing assemblies force fit connecting rod when use, cancels the setting of oil sealing, and solid piston pin serves as
Needle bearing interior rollaway nest, and be connected with piston.
The utility model beneficial effect has that compact-sized, bearing capacity is stronger, high lubricating effect, long service life, specifically
Are as follows:
A), solid piston pin is entity structure, and surface is specially treated, improves hardness, and intensity is higher, avoids impact and carries
The generation of impression under lotus；
B), solid piston pin internal diameter reduces, and roller diameter increases, and bearing capacity is stronger；
C), sealing element is carried, thus outer collar width is increased, roller length is also increase accordingly, and face loaded is longer,
It is more steady under shock loading；
D), sealing element is carried, lubricating grease can be prestored, ensure that the lubrication of fast state lower bearing；
E), sealing element uses FKM material, and Applicable temperature -30~230 DEG C adapt to worst hot case；
F), using Perfluoropolyether lubricating grease, with the small characteristic of solid additive and volatility, it can be achieved that heavily loaded occasion
Carefree lubrication.
G), through ROMAX network analysis, the service life up to 32500h, considerably beyond design requirement.
Claims (5)
1. a kind of oilless air compressor connecting rod swing needle bearing assemblies, which is characterized in that including solid piston pin, be sheathed on institute
It states the outer collar on solid piston pin, the needle roller between the solid piston pin and outer collar, be located at the solid piston
Cages for needle, the needle roller between pin and outer collar are located in the cages for needle.
2. a kind of oilless air compressor connecting rod swing needle bearing assemblies as described in claim 1, it is characterised in that described
Two edges of the inside of outer collar are equipped with dustproof groove, and the dustproof groove is equipped with sealing element.
3. a kind of oilless air compressor connecting rod swing needle bearing assemblies as claimed in claim 2, it is characterised in that described
Sealing element is FKM material sealing element.
4. a kind of oilless air compressor connecting rod swing needle bearing assemblies as described in claim 1, it is characterised in that described
Cages for needle is whole cages for needle.
5. a kind of oilless air compressor connecting rod swing needle bearing assemblies as described in claim 1, it is characterised in that described
The diameter of needle roller is 3.5mm, length 17.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820917748.1U CN209414419U (en) | 2018-06-13 | 2018-06-13 | A kind of oilless air compressor connecting rod swing needle bearing assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820917748.1U CN209414419U (en) | 2018-06-13 | 2018-06-13 | A kind of oilless air compressor connecting rod swing needle bearing assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209414419U true CN209414419U (en) | 2019-09-20 |
Family
ID=67929647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820917748.1U Active CN209414419U (en) | 2018-06-13 | 2018-06-13 | A kind of oilless air compressor connecting rod swing needle bearing assemblies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209414419U (en) |
-
2018
- 2018-06-13 CN CN201820917748.1U patent/CN209414419U/en active Active
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