Lifting Hook Guideline Attachment for Overhead Support Members

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Solution Overview

Problem

Existing lifting hooks are difficult to manually attach to overhead support members due to their weight and the risk of detachment during attachment, posing safety hazards for operators.

Innovation Solution

A lifting hook with a pivotable line guiding means attached to the tip, allowing the hook to be manually attached to a support member using a guideline, which extends outside the contact surface to prevent snagging and facilitate safe attachment from below.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the lifting hook is made strong enough to handle heavy weights, then the lifting capability is improved, but the weight of the lifting hook increases making it difficult for an operator to manually lift and attach

Engineering Contradiction:

Improvelifting capabilityVSAvoidweight of lifting hook

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

A guideline is introduced as an intermediary tool to transfer the operator's pulling force from ground level to the lifting hook tip. The guideline runs through the line guiding means and around the support member, allowing the operator to pull the heavy hook into position without directly lifting it, thus resolving the contradiction between strength requirement and manual attachability

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the lifting hook is attached to an overhead support member, then the lifting function is enabled, but the risk of detachment during attachment increases posing safety hazards

Engineering Contradiction:

Improveattachment capabilityVSAvoidattachment safety

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The line guiding means is pre-attached to the hook tip before the attachment operation begins. This preliminary configuration ensures that the guideline is already in place to control the hook's movement and prevent detachment during the attachment process, eliminating the need for separate safety measures and reducing operator risk

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If the lifting hook is designed to be manually carried and attached, then the ease of operation is improved, but the device complexity increases due to additional components

Engineering Contradiction:

Improvemanual attachabilityVSAvoidstructure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The line guiding means serves multiple functions: it guides the guideline to the support member, prevents the guideline from coming loose, and controls the hook's movement during attachment. By combining these functions into a single integrated component with simple pivotable attachment, the design achieves manual attachability without significantly increasing complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4323301B1Lifting hook and method for attaching a lifting hook to a support member

Publication Date: 2025.11.19 HOOK & MOOR AB

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AI summary

A lifting hook (1) adapted to be attached to a support member () remotely and manually by an operator, where the lifting hook is carryable, where the lifting hook (1) comprises a hook eye (2) and a hook (3), where the hook (3) comprises a body (4) and a tip (5) having a tip end (6), where the lifting hook (1) comprises a line guiding means (10) permanently and pivotable attached to the tip (5), where the line guiding means (10) is arranged to support or hold a guideline (103). The advantage of the invention is that a lifting hook can be attached to an overhead support member in an easy and safe manner by an operator standing on the ground.