Collar Bearing With Selective Fixing Means For Telescopic Boom Assembly

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Solution Overview

Problem

Current telescopic booms lack an automatic method for mounting the collar bearing during assembly, leading to slow and laborious insertion of inner sections due to the absence of a stationary support at the collar region, which complicates the setup process.

Innovation Solution

A collar bearing with fixing means and a guide frame that can be selectively attached to either the inner or outer telescopic section, allowing for automatic mounting and ensuring proper sliding support during assembly, featuring actuatable bolts and monitoring means for secure engagement and position verification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the collar bearing is manually installed during assembly, then the inner telescopic section can be properly supported, but the assembly process becomes laborious and time-consuming

Engineering Contradiction:
Improveassembly processVSAvoidassembly time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The collar bearing is designed with fixing means that enable it to be automatically mounted on the inner telescopic section during the telescoping operation itself. The bearing attaches itself to the inner section as it is being retracted, eliminating the need for separate manual installation steps and making the assembly process self-servicing.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The collar bearing is pre-equipped with fixing means that are activated during the telescoping operation. The fixing means are designed to engage with the inner telescopic section automatically as the section is retracted, preparing the support structure in advance before the telescoping operation completes, thus streamlining the overall assembly process.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the collar bearing is attached to the outer telescopic section, then proper sliding support is provided, but the bearing cannot be automatically mounted during assembly

Engineering Contradiction:
Improvesliding supportVSAvoidautomatic mounting
Core Design Contradiction:
ReliabilityVSExtent of automation

Solution Approach 1:

Instead of attaching the collar bearing directly to the outer telescopic section as in conventional designs, the invention inverts the approach by first attaching the bearing to the inner telescopic section. This reversed mounting strategy enables automatic attachment during the telescoping operation, as the inner section's movement brings the bearing into position where it can then be transferred to provide support at the collar region.

Inventive Principle:
Principle #13The other way round (Inversion)

3Productivity

If the inner telescopic section is retracted without proper support, then assembly can proceed, but the telescoping operation becomes slow and unstable

Engineering Contradiction:
Improveassembly speedVSAvoidtelescoping stability
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

The collar bearing acts as an intermediary element between the inner and outer telescopic sections. During assembly, the bearing is automatically mounted on the inner section and provides a stable second bearing point that mediates the telescoping operation, ensuring smooth and stable movement while maintaining assembly productivity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9751733B2Collar bearing for a telescopic boom as well as telescopic boom and crane
Publication Date: 2017.09.05 LIEBHERR WERK EHINGEN
  • US9751733B2 patent drawing
  • US9751733B2 patent drawing
  • US9751733B2 patent drawing

AI summary

The invention relates to a collar bearing for a telescopic boom for the sliding support of two telescopic sections in the collar region of the outer telescopic section, wherein the collar bearing includes fixing means, whereby the collar bearing selectively is releasably connectable with the outer or inner telescopic section.