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Bearing, pulley assembly, telescopic arm and crane

A pulley assembly and bearing technology, which is applied in the fields of telescopic booms and cranes, bearings, and pulley assemblies, can solve problems such as safety accidents and pulley shedding, and achieve the effect of improving safety performance

Active Publication Date: 2015-01-07
XUZHOU HEAVY MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the lifting wire rope work under heavy load for a long time, the screw 7' is easy to slip, causing the pulley 4' and the bearing 5' to fall off, causing a safety accident

Method used

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  • Bearing, pulley assembly, telescopic arm and crane
  • Bearing, pulley assembly, telescopic arm and crane
  • Bearing, pulley assembly, telescopic arm and crane

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Embodiment Construction

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail b...

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Abstract

The invention relates to a bearing, a pulley assembly, a telescopic arm and a crane. The bearing comprises an outer ring, wherein the outer wall of the outer ring is provided with a conical surface; tga is less than lambda, wherein a represents an included angle between a bus of the conical surface and a central axis of the bearing, and lambda represents a static friction coefficient between the outer wall of the outer ring and a pulley. According to the bearing, the pulley assembly, the telescopic arm and the crane, the technical problem that the pulley is easy to sideslip and deflect is solved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a bearing, a pulley assembly, a telescopic arm and a crane. Background technique [0002] The telescopic boom is the most important working part of the mobile crane, and the telescopic boom, that is, the telescopic boom, is the most common one (such as figure 1 shown). With the development of large-tonnage cranes to the thousand-ton class, the lifting weight requirements of the telescopic boom 1' are getting higher and higher. Limited by the displacement of the winch motor and the length of the wire rope, in the long working condition of the telescopic boom 1' ("long working condition" refers to the working condition with a relatively large length of the main boom, for example, when the main boom is fully extended 100m, when the boom length is at When it is above 80m, it is considered as the long-arm long working condition), the lifting ratio of the wire rope is low, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/58
Inventor 王小强曹立峰宋昕迪张庆彬
Owner XUZHOU HEAVY MASCH CO LTD