Forestry Machine Operator Station Independent Rotation
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Solution Overview
Problem
Existing forestry machines require the operator station to rotate simultaneously with the boom, which is inconvenient and obstructs visibility during transport, and they cannot be shortened effectively for better road behavior.
Innovation Solution
The operator station is designed to remain forward-facing while the boom pivots rearward, with a base section allowing independent rotation of the operator station and boom, enabling a more compact and stable transport mode by storing the harvester head behind the operator station, and using hydraulic or electro actuators for controlled movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator station rotates simultaneously with the boom, then the boom can be positioned correctly for operation, but the driver visibility is obstructed and operation becomes inconvenient
Solution Approach 1:
The patent divides the rotation function into two independent segments: the base section rotates with the boom for positioning, while the operator station rotates independently to maintain forward-facing orientation. This segmentation allows each component to perform its function without interfering with the other, resolving the contradiction between operational positioning and driver visibility.
Solution Approach 2:
The operator station is designed with dynamic independent rotation capability, allowing it to adjust its orientation separately from the boom's position. This dynamic adjustment enables the operator station to always face forward regardless of boom orientation, maintaining visibility while allowing full boom positioning flexibility.
2Adaptability or versatility
If the boom extends forwardly during transport, then the machine maintains operational readiness, but the machine length increases and road behavior deteriorates
Solution Approach 1:
The boom is designed with dynamic positioning capability, allowing it to switch between forward extension during operation and rearward retraction during transport. This dynamic repositioning enables the machine to adapt its configuration based on operational mode, achieving both operational readiness and compact transport length.
Solution Approach 2:
The boom can be positioned in multiple spatial configurations - extending forward for operation and swinging to the rear for transport. By utilizing different spatial dimensions and orientations, the system achieves both long forward reach during work and compact overall length during transport.
3Ease of operation
If the boom is journalled in front of the cab, then the boom can be positioned for operation, but the cab visibility is obstructed
Solution Approach 1:
The patent extracts the boom journaling location from the traditional position in front of the cab and relocates it to the base section, which can rotate independently. This extraction removes the obstruction to cab visibility while maintaining the boom's ability to position correctly for operation through the base section's rotation.
4Length of moving object
If the harvester head is stored in the space between the drive compartment and operator station, then the machine length is reduced for transport, but the space availability is limited
Solution Approach 1:
The harvester head storage system is designed with dynamic positioning capability. During transport, the head is retracted into the limited space between the drive compartment and operator station. During operation, the head can be extended forward on the boom, utilizing the dynamic extension capability to overcome the limited static storage volume.
Data Source
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AI summary
In a forestry machine (10) comprising an operator station (14) for the work and the transport mode and a boom (16), the boom (16) and the operator station (14) can rotate separate from each other, whereas the rotation axis (70) of the boom (16) is at or behind the front edge of the operator station (14). This makes it possible to swing the boom (16) around from a front operation mode to a rear transport mode, in which the operator station (14) remains in its position and orientation and has an unobstructed view.