Stepless Telescopable Sliding Beam Device for Crane Stability

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Solution Overview

Problem

Existing telescopable sliding beam devices can only achieve stepped extensions of the supporting base due to coupled drives, limiting the ability to create a large supporting base in spatially confined areas, where a stepless adjustment is necessary for stability and safety, especially in crane operations.

Innovation Solution

A telescopable sliding beam device with independently actuatable sliding beams, where one beam is steplessly adjustable relative to the sliding beam box, allowing for a combination of stepped and stepless adjustments, enabling a continuous adjustment of the supporting base across the entire region.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If coupled drives are used for telescoping sliding beams, then the device structure is simplified and power transmission is enabled, but only stepped extension of the supporting base is possible

Engineering Contradiction:

Improvedrive structureVSAvoidadjustment range

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The drive system is segmented into independent drives for each sliding beam, allowing each beam to be adjusted independently rather than being coupled together. This enables continuous stepless adjustment of the supporting base while maintaining manageable drive complexity through modular design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system transitions from a static coupled drive configuration to a dynamic independent drive configuration, where each sliding beam can be actuated separately according to specific operational requirements, enabling flexible stepless adjustment of the supporting base

Inventive Principle:

Principle #15Dynamics

2Area of stationary object

If sliding beams are designed as rather long portions, then the supporting base is maximized, but the device becomes less compact for transport

Engineering Contradiction:

Improvesupporting baseVSAvoiddevice compactness

Core Design Contradiction:

Area of stationary objectVSVolume of moving object

Solution Approach 1:

The sliding beams are designed with nested telescopic sections that can be collapsed into each other for compact transport, while still providing the capability to extend to maximum length when needed for large supporting base requirements

Inventive Principle:

Principle #7Nested doll (Nesting)

3Device complexity

If stepped extension is used for sliding beams, then the device structure is simplified, but the supporting base cannot be continuously adjusted in spatially confined positions

Engineering Contradiction:

Improvebeam adjustment mechanismVSAvoidadjustment flexibility

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The stepped mechanical adjustment mechanism is replaced or supplemented with a continuous adjustment mechanism (such as hydraulic or electric actuators with variable positioning), enabling stepless adjustment of the sliding beams and providing continuous variation of the supporting base area

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS9464404B2Steplessly telescopable sliding beam device

Publication Date: 2016.10.11 LIEBHERR WERK EHINGEN

AI summary

The present invention relates to a telescopable sliding beam device with a sliding beam box and at least one first sliding beam and at least one second sliding beam, which are telescopable into each other, wherein the second sliding beam is mounted in the sliding beam box so as to be steplessly telescopable, and wherein in a first supporting region the first sliding beam is retracted and a stepless adjustment of the sliding beam device can be carried out by shifting the second sliding beam. According to the invention, the first sliding beam furthermore is extended in a second supporting region and a stepless adjustment of the sliding beam device can be carried out by shifting the second sliding beam.