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
View PDF1 Cites 13 Cited by
  • Summary
  • 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 t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pulley assembly of double bracing needle bearing
  • Pulley assembly of double bracing needle bearing
  • Pulley assembly of double bracing needle bearing

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Such as Figure 1~8 The preferred embodiment of the pulley assembly of the dual-support needle roller bearing shown in the present invention has a core shaft 1 fixedly sleeved on the end of the rotating shaft of the alternator and a unidirectional sleeve sleeved on the outer circular surface of the core shaft 1 The 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, in the raceway 3 is provided with a needle 7 and an arc-shaped slope for limiting the sliding area of ​​the needle 7 Groove 2-1 and a cage 8 for holding the needle roller 7, a spring sheet 9 is installed on the cage 8. The arc-shaped ramp groove 2-1 is provided on the inner wall of the outer ring 2, and the retaining The frame 8 includes first and second annular end edges 8-1 axially separated along a common axis, and a cross beam 8-2 connecting the two annular end edges 8-1, between the annular end edges 8-1 and the cross beam 8-2 A win...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Radiusaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F16H55/50
Inventor 周雪刚薛青刘志明
Owner JIANG SU NAN FANG BEARING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap