Stump Cutter Engine Mounting and Control Linkage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stump reduction machines with engines mounted to articulating arms face issues such as engine failure due to excessive tilting and a higher center of gravity, which are not present in machines with engines mounted to the frame, but these frame-mounted machines can be less effective for cutting vertically tall stumps and navigating tight spaces.
Innovation Solution
A stump reduction device with an engine mounted between the chassis ends, featuring a control console pivotally attached via a linkage assembly, allowing independent vertical and horizontal control of the material reduction linkage, maintaining a low tilt angle and enabling efficient cutting of vertically tall stumps while being compact for transport and maneuverable in tight spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the engine is mounted to the articulating arm, then the machine can cut vertically tall stumps more effectively, but the engine experiences excessive tilting causing possible failure and the center of gravity becomes higher
Solution Approach 1:
The machine is divided into separate functional components: the engine is segmented and mounted to the frame rather than the articulating arm, separating the power source from the cutting mechanism. This allows the cutting arm to articulate independently while the engine remains stable on the frame, resolving the contradiction between cutting effectiveness and engine stability.
2Reliability
If the engine is mounted to the frame, then the layout is more compact and the center of gravity is lower, but the machine is less effective for cutting vertically tall stumps and navigating tight spaces
Solution Approach 1:
The machine separates the engine mounting (to frame for stability) from the cutting mechanism mounting (to articulating arm for reach). This segmentation allows the frame-mounted engine to provide stable power while the articulated arm extends cutting capability to vertically tall stumps, resolving the contradiction between compact stable layout and cutting effectiveness.
Solution Approach 2:
The articulating arm provides dynamic positioning capability, allowing the cutting mechanism to reach vertically tall stumps while the engine remains statically mounted to the frame. This dynamic arm enables the machine to navigate tight spaces and reach high stumps without compromising engine stability.
3Device complexity
If the control console is fixed to the frame, then the structure is simpler, but the operator cannot effectively control the machine while standing at the first end
Solution Approach 1:
The control console is made movable rather than fixed, allowing it to be positioned at different locations on the frame. This dynamic positioning enables the operator to access the controls while standing at either end of the machine, improving ease of operation without significantly increasing structural complexity.
Data Source
Figure 1a
Figure 1b
Figure 1c
AI summary
The present disclosure provides a device and method that enable the efficient reduction of stumps. In one embodiment the stump removal methods and devices according to the present disclosure allow the operator to have a clear view of the work area during operation, and the ability to move the reduction device through a wide range of motion during operation. In one embodiment, the material reduction tool (2) pivots relative to the chassis (30) in the vertical plane about multiple pivot points. In some embodiments the device includes a retractable auxiliary control panel (42) located at the end (32) of the device opposite the material reduction tool (2). The control panel (42) enables the operator to direct the movement of the device from the end (32) of the device and thereby enable the device to maneuver through narrow spaces.