Hydraulic Log Splitter Stroke Switching With Magnets and Reed Switch
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing log processing and firewood splitting machines require inefficient long strokes for both operational and reverse movements of the piston, especially when processing shorter logs, leading to reduced productivity.
Innovation Solution
A log processing and firewood splitting machine with a hydraulic cylinder and piston rod system that includes permanent magnets and an electromagnetic Reed switch to control the stroke length, allowing for adjustable and optimized operational and reverse strokes based on log length, using a control unit to automatically redirect hydraulic media flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If log processing is done manually with traditional tools, then operational flexibility is maintained, but processing time is excessive and labor intensity is high
Solution Approach 1:
The patent combines multiple log processing operations (cutting, splitting, debarking) into a single integrated machine that performs all functions automatically. The machine merges the functionality of traditional separate tools (axes, saws, debarking instruments) into one automated system with a single operator interface, thereby increasing productivity without requiring multiple separate devices.
Solution Approach 2:
The processing machine is designed as a universal device that can perform multiple different operations on logs of varying sizes and types. It includes adjustable cutting mechanisms, variable splitting angles, and adaptable debarking systems that can handle diverse log specifications, making it applicable to various processing needs rather than requiring specialized equipment for each operation.
2Productivity
If automated processing machines are used, then processing speed increases, but adaptation to different log specifications is difficult
Solution Approach 1:
The machine incorporates dynamically adjustable components including variable cutting depths, adjustable splitting angles, and movable processing elements that can be repositioned based on log diameter and type. The feed mechanism speed and processing parameters can be dynamically changed during operation to accommodate different log specifications while maintaining continuous automated processing.
Solution Approach 2:
The system allows modification of processing parameters such as cutting speed, splitting force, debarking intensity, and feed rate according to the specific log characteristics. Operators can adjust these parameters through a control interface to optimize processing for different wood types, diameters, and desired output specifications without redesigning the machine.
3Use of energy by moving object
If conventional processing methods are used, then equipment cost is low, but energy consumption is high and environmental impact is negative
Solution Approach 1:
The machine operates continuously through automated feed mechanisms that maintain constant processing without idle periods between logs. The system keeps all processing components engaged in useful work throughout operation, eliminating the start-stop cycles inherent in manual processing and reducing energy waste from repeated acceleration and deceleration of mechanical components.
Solution Approach 2:
The patent replaces purely mechanical manual operations with an automated control system that uses sensors, actuators, and electronic control to manage processing. This substitution optimizes energy usage through precise control of motor speeds, forces, and timing, reducing energy consumption compared to uncontrolled mechanical systems while maintaining manufacturing feasibility.
4Reliability
If manual processing is used, then equipment simplicity is maintained, but safety risks from manual handling are high
Solution Approach 1:
The machine performs hazardous operations automatically without direct human contact with moving parts during processing. The automated feed system, cutting mechanisms, and debarking devices operate independently once logs are loaded, eliminating the need for operators to manually guide logs through dangerous zones. Safety functions are built into the automated system rather than requiring separate protective equipment.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A log processing and firewood splitting machine allows selection among various lengths (L1, L2) of the stroke of the piston rod (21) in a hydraulic cylinder (2) in a direction towards a splitting tool (3) and also in opposite direction, by which a duration of each cycle can often be essentially reduced, and consequently, the overall productivity of the machine can be meaningfully improved. To this aim, on the one hand, at least two permanent magnets (71, 72) are mounted on said piston rod (21), which are in a direction of said longitudinal geometric axis (200) spaced apart from each other and are located on the same side of the piston rod (21) and substantially in a same diametric plane with respect to said longitudinal geometric axis (200), while on the other hand, an electromagnetic Reed switch (8) is mounted on said framework (1) adjacent to the piston rod (21), and is adapted to cooperate with each of said permanent magnets (71, 72) for the purpose of generating a suitable electric signal as soon as anyone of said magnets (71, 72) reaches the area of sensitivity of said Reed switch (8).