Tiller Arm Locking Sleeve for Industrial Truck Joints
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Solution Overview
Problem
Existing tiller arms for industrial trucks require complex locking mechanisms for both upper and lower joints, making them difficult to handle and manufacture, and lack a simple solution for locking the lower joint when a user is on a platform.
Innovation Solution
A movable sleeve or rod locking mechanism that can enclose and lock both joints simultaneously or individually, allowing for intuitive operation and easy manufacturing, with the option to lock both joints in a central position or only one at a time, ensuring stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate locking mechanisms are used for upper and lower joints, then each joint can be locked independently, but the device complexity increases and handling becomes difficult
Solution Approach 1:
A single movable locking means is designed to perform multiple functions: it can lock the upper joint at a first position, lock the lower joint at a second position, and potentially lock both joints simultaneously at a third position. This universal locking mechanism eliminates the need for separate locking devices for each joint, thereby reducing device complexity while maintaining reliable locking capability for both joints.
2Ease of operation
If a single locking means is used for both joints, then device complexity is reduced and handling is simplified, but the ability to lock joints independently is limited
Solution Approach 1:
The locking means is designed as a movable component that can be dynamically positioned at different locations along the tiller arm. By moving the locking means to different positions, the user can selectively engage either the upper joint or the lower joint for locking. This dynamic positioning capability allows a single locking means to provide independent locking control for both joints, maintaining versatility while simplifying the overall structure.
3Stability of the object's composition
If the locking means can enclose both joints simultaneously, then both joints are locked providing stability, but the tiller arm may become loose when switching between locking positions
Solution Approach 1:
The locking means is designed with a structure that ensures proper engagement sequence when transitioning between locking positions. The movable locking means can be positioned to enclose both joints simultaneously at a third position, providing stable locking. The design incorporates features that prevent loosening during transitions by ensuring the locking means maintains proper engagement with the joint structure throughout the movement from one locking position to another.
Data Source
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AI summary
A tiller arm for a tiller arm industrial truck comprising a first joint (2) and a second joint (3), which are pivotally arranged in an essentially common plane, so that the tiller arm can change geometrical shape in said plane, wherein a rocking means (6) is provided so that said first joint and said second joint are lockable.