Rotary Telescopic Handler Cab Alignment for Safe Ladder Access
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Solution Overview
Problem
Existing rotary telescopic handlers face safety and accessibility issues as the cab's alignment with the vehicle side obstructs the view of the ladder, making it difficult and dangerous for operators to enter or exit, especially when the cab is rotated or aligned in certain positions.
Innovation Solution
An electronic unit is integrated into the handler to automatically rotate the assembly, including the cab and boom, to predefined positions where the cab door is proximate to the ladder, ensuring clear visibility and safe access, regardless of the assembly's orientation relative to the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the cab is aligned with the side of the vehicle to maximize cab size, then the transverse footprint is minimized, but the ladder becomes hidden from the operator's view, making access dangerous
Solution Approach 1:
The invention makes the assembly (cab and boom) rotatable relative to the vehicle about a vertical axis, allowing dynamic repositioning. When access is needed, the assembly rotates to bring the cab door adjacent to the ladder, providing visibility and safe access while maintaining the compact transverse footprint when aligned with the vehicle side.
Solution Approach 2:
The invention positions the ladder along the side of the vehicle in advance, and the electronic unit automatically rotates the assembly to a predefined arrangement where the cab door is adjacent to the ladder before the operator needs to access it, ensuring safe and visible access is prepared in advance.
2Adaptability or versatility
If the assembly is rotated to intermediate positions, then working space is increased, but the cab door moves away from the ladder, making access awkward and dangerous
Solution Approach 1:
The electronic unit monitors the position of the assembly and automatically rotates it to predefined arrangements where the cab door is adjacent to the ladder. This feedback mechanism ensures that regardless of the working position, the system self-corrects to provide safe access when needed.
Solution Approach 2:
The system automatically manages its own positioning for access. When the operator needs to enter or exit the cab, the electronic unit autonomously rotates the assembly to the correct arrangement, eliminating the need for manual positioning and ensuring consistent safe access.
3Adaptability or versatility
If a second ladder is placed on the opposite side of the vehicle, then access options are increased, but the transverse footprint of the vehicle increases
Solution Approach 1:
Instead of adding a static second ladder that would increase the transverse footprint, the invention uses the rotatable assembly to dynamically bring the cab door adjacent to the existing ladder on one side, providing access flexibility without increasing the vehicle's width.
Data Source
AI summary
A rotary telescopic handler, which comprises at least one vehicle, which can move on the ground and is provided with at least a ladder arranged along one of its side walls, and a rotating assembly that comprises at least one telescopic boom, and a cab; the handler comprises an electronic unit associated with a respective actuation device, which can be activated selectively by an operator; the unit is configured to actuate the rotation of the assembly with respect to the vehicle about the vertical axis and is provided with instructions for the automatic rotation of the assembly with respect to the vehicle, following the activation of the device, to at least a first predefined arrangement, for facilitated access to the cab, wherein a door for access to the cab faces the ladder and is proximate thereto.