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Pulley assembly of double bracing needle bearing

A technology of needle roller bearing and pulley assembly, applied in the direction of belt/chain/gear, hoisting device, element with teeth, etc., can solve the problem of slippage of the pulley assembly of double-support needle roller bearing and the service life of the belt without joints Short, short service life of the pulley assembly of double-support needle roller bearings, etc., to achieve the effect of not easy to slip, large torque, and prolong service life

Active Publication Date: 2009-10-21
JIANG SU NAN FANG BEARING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to solve the problem that the pulley assembly of the current double-supported needle roller bearing may slip when the electric power of the automobile is large, and the service life of the non-joint belt may be shortened. The technical problem of short and short service life of the pulley assembly of double-supported needle roller bearings ensures the continuous stability of the clutch during operation. The present invention provides a pulley with stable operation, good structural strength, long service life and double-supported needle roller bearings. Pulley assembly of double support needle roller bearings of the assembly

Method used

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  • Pulley assembly of double bracing needle bearing
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  • Pulley assembly of double bracing needle bearing

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Embodiment Construction

[0024] Such as Figure 1-8 The preferred embodiment of the pulley assembly of the double-supported needle roller bearing of the present invention shown has a mandrel 1 fixedly sleeved on the end of the rotating shaft of the alternator and a unidirectional shaft sleeved on the outer surface of the mandrel 1. Bearing composition; the one-way bearing has an outer ring 2, a raceway 3 is formed between the outer ring 2 and the mandrel 1, and a needle roller 7 and an arc-shaped slope for limiting the sliding area of ​​the needle roller 7 are arranged in the raceway 3 The groove 2-1 and the cage 8 for holding the needle roller 7 are installed with a spring leaf 9 on the cage 8. The arc-shaped slope groove 2-1 is arranged on the inner wall of the outer ring 2, and the retaining The frame 8 includes first and second annular end sides 8-1 axially separated along the common axis and a beam 8-2 connecting the two annular end sides 8-1. A window hole for holding the needle roller 7 is for...

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Abstract

The invention relates to a pulley assembly, in particular to a pulley assembly of a double bracing needle bearing for a car alternator, comprising a mandrel and an outer ring; a set of rolling needles are arranged at the outer ring, the outer raceway of the rolling needles are arranged on the inner circle surface of the outer ring corresponding to the rolling needles position, the outer raceway of the rolling needles is an one-way raceway, the outer raceway of the rolling needles is composed of arc slope grooves which are equal to the rolling needles in number and connected end to end, the direction from the deep part of the arc slope grooves to the low part of the arc slope grooves, is a single-acting direction of a driving rotation axis and the axial length of the arc slope grooves match with the rolling needles. The invention solves the technical problems of an existing pulley assembly built-in belt pulley of a double bracing needle bearing, such as the slipping phenomenon of a pulley assembly of a double bracing needle bearing when the car electric power is very large and short service life thereof.

Description

technical field [0001] The invention relates to a pulley assembly of a double-support needle roller bearing, in particular to a pulley assembly of a double-support needle roller bearing for an automobile alternator. Background technique [0002] A driven pulley is set on the rotating shaft of the automobile alternator, and a pulley assembly with double supporting needle roller bearings is arranged between the outer surface of the rotating shaft and the inner surface of the driven pulley. Between the driving pulleys at the ends of the crankshaft of the engine, a non-joint belt is hung to drive the above-mentioned automobile alternator. When the moving speed of the endless belt is at a certain or rising tendency, the power can be freely transmitted from the endless belt to the rotating shaft. When the moving speed of the endless belt is falling, the driven pulley and the rotating shaft can freely face each other. rotate. In order to improve the reliability and durability of ...

Claims

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Application Information

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IPC IPC(8): F16H55/50
Inventor 周雪刚薛青刘志明
Owner JIANG SU NAN FANG BEARING CO LTD
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