Telescopic Steering Handlebar With Cable Reservoir and Stop Limiter
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Solution Overview
Problem
Existing telescopic steering handlebars for single-axle tractors do not adequately adjust to varying operator conditions, such as walking behind or riding on the tractor, requiring different handlebar lengths and angles.
Innovation Solution
A telescopic handlebar with an inner and outer section, limited by a stop device, allows for infinitely adjustable length and angle adjustments using a clamping lever and toothed joints, with a cable reservoir to manage cables and wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the handlebar length is fixed, then the structure is simple and reliable, but it cannot adapt to different operator conditions (walking behind vs. riding on the tractor)
Solution Approach 1:
The handlebar is designed with a telescopic mechanism consisting of an inner tube and an outer tube that can slide relative to each other, transforming the fixed-length structure into a dynamic, adjustable-length structure. This allows the handlebar to adapt to different operator positions (walking behind or riding on the tractor) while maintaining structural integrity through the telescopic design.
Solution Approach 2:
The handlebar is divided into multiple segments (inner tube and outer tube) that can move independently relative to each other. This segmentation enables the handlebar to change its overall length by extending or retracting the inner tube within the outer tube, providing adaptability without requiring a completely different structure for each operating mode.
2Adaptability or versatility
If the handlebar is made telescopic with multiple sections, then adaptability improves, but cable management becomes complex and cables may get damaged
Solution Approach 1:
The inner tube is nested within the outer tube, creating a compact telescopic structure. This nesting arrangement allows the handlebar to extend and retract while keeping the overall structure compact, and the nested design provides a protected pathway for cables to run through both tubes without being exposed to external damage.
Solution Approach 2:
A stop device acts as an intermediary mechanism between the inner tube and outer tube, controlling their relative movement. This stop device prevents the inner tube from extending beyond the outer tube, thereby preventing cable exposure and damage while still allowing the necessary telescopic adjustment for different operating conditions.
3Adaptability or versatility
If the inner tube can extend infinitely, then adjustability is maximized, but the structure becomes unstable and uncontrollable
Solution Approach 1:
The stop device is pre-configured within the telescopic mechanism to automatically limit the extension range of the inner tube. This preliminary action prevents the inner tube from extending beyond the outer tube, ensuring structural stability and controllability while still providing sufficient adjustment range for both walking and riding operating modes.
Solution Approach 2:
The telescopic mechanism changes the physical parameter of handlebar length within a controlled range defined by the stop device. The stop device establishes boundary conditions for the parameter change, allowing the handlebar to be adjusted to the required length for different operations while preventing excessive extension that would compromise structural stability.
Data Source
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AI summary
The present invention relates to a telescopic steering handlebar A for single-axle tractors with an inner handlebar (1) and an outer handlebar (2) as well as a clamping lever (3), wherein the inner handlebar (1) and the outer handlebar (2) are connected in a steplessly telescopic manner via a stop device (4).