Movable Stacking Head for Sod Harvester Conveyor Synchronization
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Solution Overview
Problem
Existing sod harvesters are limited by the need to stop or slow down when a stacking head has not yet picked up sod rolls, as the conveyor cannot be advanced until the rolls are secured, leading to inefficiencies and potential damage to rolls if moved prematurely.
Innovation Solution
A movable stacking head that synchronizes its movement with the stacking conveyor during the pick-up operation, allowing the conveyor to advance and make room for subsequent rolls without requiring the harvester to stop or slow down, by using circuitry to control the movement of both the stacking head and conveyor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the stacking head remains stationary while the conveyor advances, then the rolls can be securely picked up, but the harvester must stop or slow down to prevent roll damage and to make room for subsequent rolls
Solution Approach 1:
The stacking head is made movable relative to the stacking conveyor, transitioning from a stationary position to a dynamic configuration that can move in sync with the conveyor. This allows the stacking head to maintain proper contact with rolls during conveyor advancement, enabling continuous operation without stopping or slowing down, thus resolving the contradiction between productivity and roll security
Solution Approach 2:
The stacking head moves with the conveyor in advance of the pickup operation, positioning itself correctly before the rolls need to be secured. This preliminary movement ensures that when the stacking head engages the rolls, they are already in the correct position, allowing the conveyor to continue advancing without requiring the harvester to stop, thereby maintaining both speed and reliability
2Productivity
If the conveyor advances before the stacking head picks up the rolls, then subsequent rolls can be moved onto the conveyor, but the rolls may fall off or be damaged
Solution Approach 1:
By making the stacking head movable and synchronizing its movement with the conveyor, the system enables continuous advancement without interruption. The stacking head remains properly positioned relative to the rolls throughout the movement, preventing them from falling off or being damaged while allowing the conveyor to advance continuously for improved productivity
Solution Approach 2:
The system uses circuitry to control and coordinate the movement of both the stacking head and conveyor, implementing feedback control to ensure proper synchronization. This ensures that the stacking head maintains correct positioning relative to the rolls during conveyor advancement, preventing damage while enabling continuous operation
3Ease of operation
If the stacking head is positioned to pick up rolls at a specific location, then pickup is efficient, but the conveyor cannot be advanced to make room for subsequent rolls
Solution Approach 1:
The stacking head is configured to move with the stacking conveyor, transforming it from a fixed positioning mechanism to a dynamic one that maintains proper pickup alignment throughout the conveyor's movement. This allows the conveyor to advance continuously while the stacking head follows, making room for subsequent rolls without compromising pickup efficiency
Solution Approach 2:
The stacking head's movement is added in the longitudinal dimension of the conveyor system, allowing it to move along the direction of conveyor travel. This dimensional addition enables the stacking head to maintain its pickup position relative to the rolls while the conveyor advances, simultaneously achieving ease of operation and productivity
Data Source
AI summary
A stacking head of a sod harvester can be configured to move with a stacking conveyor during a pick up operation. A stacking head on a roll harvester can be configured to move with a stacking conveyor to allow the stacking conveyor to be moved while the stacking head is removing rolls of sod from the stacking conveyor.