Pivotable Striking Arm for Tree Marking Without Obstruction
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Solution Overview
Problem
Existing marking devices for tree harvesting are inefficient in applying identification markings on the end surface of tree trunks, as they require the tree trunk to be backed up after crosscutting, which complicates the process and obstructs the cutting member.
Innovation Solution
A marking device with a pivotable striking arm that moves outward from its resting position to a striking position, allowing it to apply markings directly on the tree trunk without obstructing the cutting member, enabling efficient and compact design for use above the cutting member of a harvesting arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the marking device is positioned above the cutting member with a compact design, then the device complexity is reduced and space is optimized, but the striking arm cannot reach the tree trunk end surface without obstructing the cutting member
Solution Approach 1:
The striking arm is designed to be pivotable about a pivot axis, transitioning from a static compact structure to a dynamic system. When actuated, the striking arm pivots outward to increase the distance between the pivot axis and the base, enabling the striking head to reach the tree trunk end surface while maintaining a compact resting position above the cutting member.
2Volume of moving object
If the striking arm is positioned close to the base for compactness, then the device occupies less space, but the striking power and marking effectiveness are reduced
Solution Approach 1:
The striking arm utilizes rotational motion in a radial dimension rather than linear extension. By pivoting about an axis perpendicular to the base, the striking head moves outward in an arc, increasing the effective striking distance and force without increasing the linear footprint of the device base.
3Productivity
If the tree trunk is backed towards the marking device after crosscutting, then the marking can be applied, but the process time increases and the cutting member is obstructed
Solution Approach 1:
The marking device is positioned and ready to mark the tree trunk end surface immediately after crosscutting, without requiring the tree trunk to be moved or backed up. The pivotable striking arm is pre-positioned above the cutting member and can quickly pivot to apply the marking, eliminating the time-consuming backing operation.
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
Enables rapid and powerful application of identification markings on the end surface of tree trunks without needing to back the tree trunk towards the marking device, improving operational efficiency and compactness in tree harvesting arrangements.
Implementation Method 1
the striking arm is given the opportunity to hit with great power against the end surface of a tree trunk
Data Source
AI summary
The invention relates to a marking device (10) for applying a marking on an object. The marking device comprises a striking arm (11), which is provided with a striking head (12) at its outer free end, and actuating means (30) for actuating the striking arm (11). The striking arm is movably connected to a base (7) through a link arrangement (30). The striking arm is pivotable about a pivot axis (V1) under the effect of the actuating means and the link arrangement from a resting position to a striking position so as to thereby allow the striking head to hit against an object in order to apply a marking on the object. The link arrangement is arranged to move the pivot axis of the striking arm outwards so that the distance between this pivot axis and the base increases when the striking arm is pivoted from the resting position to the striking position.