Cutting Trolley Attachment Device for Alignment and Depth Control

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Solution Overview

Problem

Hand-operated cutters for sawing in asphalt and concrete floors face ergonomic challenges and alignment issues when used with conventional trolleys, leading to deviations in the cutting groove direction and limited control over sawing depth.

Innovation Solution

A cutting trolley with a frame structure and linkage system that includes adjustable rear wheels and attachment devices for the cutter handles, allowing for precise alignment and depth control through a control device with a linkage system and adjustable sawing depth mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If hand-operated cutters are used with conventional trolleys, then the cutter can be transported and supported, but alignment problems arise causing the cutting groove direction to deviate from the trolley movement direction

Engineering Contradiction:

Improveergonomic operationVSAvoidalignment precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The attachment device incorporates adjustable and movable components that allow dynamic adaptation of the cutter's position and orientation relative to the trolley. The attachment device can be adjusted laterally and angularly to maintain proper alignment between the cutting blade and trolley movement direction, resolving the static misalignment problem.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If conventional cutting trolleys are used, then the cutter can be supported during operation, but control over sawing depth is limited

Engineering Contradiction:

Improveoperational supportVSAvoidsawing depth control

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The attachment device includes pre-adjustable depth control mechanisms and positioning features that allow the operator to set the desired sawing depth before operation begins. The device incorporates stops, guides, or measurement markings that maintain consistent depth control throughout the cutting operation.

Inventive Principle:

Principle #10Preliminary action

3Manufacturing precision

If the cutter is mounted on the trolley with rigid connection, then alignment can be maintained, but the system becomes complex and difficult to adjust

Engineering Contradiction:

Improvealignment maintenanceVSAvoidattachment system complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The attachment device is divided into separate modular components including a mounting bracket, adjustment mechanisms, and connection elements. This segmentation allows each component to perform a specific function while maintaining overall simplicity and ease of assembly/disassembly.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP2059376B1Cutting trolley with a front and a rear attachment device

Publication Date: 2017.12.27 HUSQVARNA AB

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AI summary

A cutting trolley (2) includes a frame structure (12) and at least two rear wheels (30, 31) on a rear shaft (32) and at least one front wheel (20), for a cutter (31) of the type including a circular cutting blade (5) in a front end of the cutter, and a front handle (6) and a rear handle (7). The trolley also includes a cutter carrier (13), said cutter carrier including a front attachment device (36) and a rear attachment device (37) for the attachment of the cutter on the carrier via said front handle and said rear handle, respectively, for trolley carried operation of the cutter.