Cranked Pivot Bearing Lopper Head for Remote Cutting
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Solution Overview
Problem
Existing lopper devices face challenges in providing easy and effective remote operability and mechanical handling, despite previous attempts to enhance remote controlled lopper systems.
Innovation Solution
A lopper head design featuring a cranked pivot bearing and scissor-type cutting blades with a cord-to-gearwheel mechanism, allowing for enhanced operational positions and orientations, and a housing to prevent entanglement, along with a thumb wheel for adjusting pivotal torque, facilitating easy remote operation and mechanical handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional lopper head design with straight pivot bearing is used, then the structure is simple, but the remote operability and mechanical handling are difficult
Solution Approach 1:
The pivot bearing is cranked at an angle of approximately 45 degrees relative to the longitudinal axis of the connector section, creating an asymmetric configuration that enables advantageous operational positions and orientations of the cutting blades relative to the elongated stick, thereby improving remote operability
Solution Approach 2:
The cranked pivot bearing introduces a spatial dimension change by orienting the pivoting plane at an angle to the connector section axis, allowing the cutting blades to achieve operational positions that were not possible with a straight pivot bearing, enhancing mechanical handling
2Adaptability or versatility
If the pivot bearing is cranked against the center line of the connector section, then advantageous operational positions are enabled, but the structure becomes more complex
Solution Approach 1:
The pivot bearing is deliberately cranked at an angle of approximately 45 degrees relative to the longitudinal axis of the connector section, creating an asymmetric configuration that enables advantageous operational positions and orientations of the cutting blades relative to the elongated stick
Solution Approach 2:
The cranked pivot bearing configuration allows the cutting blades to dynamically adjust to multiple operational positions and orientations during use, enhancing adaptability while maintaining a relatively simple mechanical structure
3Productivity
If scissor-type cutting blades are used, then cutting performance is improved, but the potential for jamming increases
Solution Approach 1:
The cranked pivot bearing orientation at approximately 45 degrees to the connector section axis creates an asymmetric operational configuration that reduces the potential for jamming while maintaining the cutting performance benefits of scissor-type blades
4Difficulty of detecting and measuring
If the cutting blades are oriented away from the connector section, then visibility of the cutting zone is enhanced, but the device length increases
Solution Approach 1:
The cranked pivot bearing enables the cutting blades to be oriented in a spatial configuration that improves visibility of the cutting zone while maintaining a compact overall device length through angular positioning rather than linear extension
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design improves remote operation and mechanical handling by enabling advantageous operational positions, reducing jamming potential, and providing a compact, easy-to-use configuration with enhanced usability and visibility of the cutting zone.
Implementation Method 1
A lopper head design featuring a cranked pivot bearing and scissor-type cutting blades with a cord-to-gearwheel mechanism
Implementation Method 2
a thumb wheel for adjusting pivotal torque
Data Source
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AI summary
The invention in particular is directed to lopper head (1) having a connector section (3) for connecting a stick (2), a pivot bearing (4) having a first bearing element (5) attached to the connector section (3) and a second bearing element (6) pivotably attached to the first bearing element (5) and carrying cutting blades (7, 8), wherein the pivot bearing (4) is cranked vis-a-vis a center line (9) of the connector section (3).