Hydraulic Grubber Push Bar for Tree Cutting
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Solution Overview
Problem
Existing tree cutting and grubber devices face challenges in efficiently removing small saplings, roots, and tree stumps, especially when used with smaller front end loaders, as they often get lodged in mechanical components or bent during cutting, and lack versatility in soil leveling and safety features during tree cutting processes.
Innovation Solution
A grubber and push bar attachment device for front end loaders and tree cutting machines, featuring a serrated cutting blade that can be positioned below ground or vertically, hydraulically extended for cutting and pushing trees, and adapted for use with various tree cutting devices like the Marshall Tree Saw, allowing for efficient removal of vegetation and debris while providing soil leveling and safety features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a serrated cutting blade is extended forward to cut trees and roots, then cutting effectiveness is improved, but the blade may get lodged in mechanical components or bent during cutting
Solution Approach 1:
The cutting blade is designed to be movable rather than fixed, allowing it to adjust its position dynamically. The blade can be retracted into an upright position when not in use and extended forward when cutting is needed, reducing the risk of getting lodged in mechanical components while maintaining cutting effectiveness when deployed.
Solution Approach 2:
The cutting system is divided into separate functional components: the serrated cutting blade is detachably mounted on the push bar, allowing independent optimization of each component. The blade can be replaced or adjusted without affecting the entire system, improving reliability while maintaining cutting performance.
2Adaptability or versatility
If the cutting blade is positioned below ground surface to remove saplings and roots, then vegetation removal capability is improved, but the device complexity increases
Solution Approach 1:
The push bar attachment is designed to perform multiple functions: it can push trees during cutting operations, extend the cutting blade below ground surface to remove saplings and roots, and be retracted when not needed. This multi-functionality increases versatility without requiring separate devices for each task.
Solution Approach 2:
The pushing function and cutting function are merged into a single integrated attachment device. The push bar serves as both a pushing mechanism and a mounting structure for the cutting blade, reducing the need for separate components and simplifying the overall device structure despite the enhanced capabilities.
3Ease of operation
If the push bar is hydraulically extended to push trees away from the loader, then tree falling control is improved, but the device complexity increases
Solution Approach 1:
The push bar is equipped with a hydraulic cylinder that enables controlled extension and retraction. This hydraulic mechanism provides smooth, controlled movement to push trees away from the loader during cutting operations, improving ease of operation and tree falling control.
Solution Approach 2:
The same hydraulic system that controls the tree cutting device is also used to control the push bar extension, eliminating the need for a separate hydraulic system. This integration improves ease of operation by using existing controls while minimizing the increase in device complexity.
4Length of moving object
If the cutting blade is retracted into upright position, then clearance for loader operations is improved, but the cutting functionality is reduced
Solution Approach 1:
The cutting blade is designed to be dynamically positionable between an extended cutting position and a retracted upright position. This dynamic positioning allows the blade to provide full cutting functionality when needed while clearing the operational path of the loader when retracted, resolving the contradiction between clearance and functionality.
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 device effectively removes small trees, brush, and roots, prevents tree lodging, enhances access for cutting, and ensures safer tree falling directions, while also serving as a soil leveling tool, improving the versatility and safety of tree cutting operations.
Implementation Method 1
hydraulically extended forward to push a tree being cut
Data Source
AI summary
An attachment for front end loaders and for tree cutting devices attached to a front end loader provides a hydraulically extending serrated edge which may be positioned below the ground surface in front of the loader or the tree cutting device to remove small saplings and cut through roots around a tree. The attachment may also be retracted into an upright position out of the way of the front end loader, a front mounted accessory or a front mounted tree cutting device when using the accessory or tree cutting device and extended forward to push a material or a tree being cut in a direction in front of the accessory or tree cutting device and away from the front end loader.