Lift Chassis Leveling Arms for Uneven Terrain Stability
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Solution Overview
Problem
Traditional boom lifts face challenges in maintaining stability and levelness on uneven or sloped surfaces, particularly when operating the boom, due to inadequate leveling systems that fail to effectively adjust pitch and roll, leading to reduced operational efficiency and safety concerns.
Innovation Solution
The proposed solution involves a chassis with a leveling system comprising multiple pivotally coupled arms and actuators that can independently pivot and adjust to maintain the lift device's levelness, incorporating steering actuators and pressure sensors to adapt to terrain, allowing for adaptive oscillation modes and auto-leveling capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional boom lifts use a simple chassis without advanced leveling systems, then the device complexity is reduced, but the ability to maintain stability and levelness on uneven surfaces deteriorates
Solution Approach 1:
The leveling system is divided into multiple independent arms (first arm, second arm, third arm, fourth arm) that can pivot independently. Each arm is connected to the base through separate pivot actuators, allowing individual adjustment of each corner of the chassis to adapt to uneven terrain while maintaining overall stability
Solution Approach 2:
The arms are designed with pivotable connections that allow dynamic adjustment of the chassis orientation. The pivot actuators enable real-time changes in arm angles to compensate for terrain variations, and the sloped bottom surfaces allow automatic adaptation to ground contours, transforming a static chassis into a dynamically adjustable platform
2Adaptability or versatility
If the arms are designed with sloped bottom surfaces for automatic leveling, then the adaptability to terrain improves, but the manufacturing precision requirements increase
Solution Approach 1:
The sloped bottom surfaces of the arms are designed to automatically contact and adapt to the ground surface without requiring active control or precise manufacturing. The geometry of the sloped surfaces inherently provides the leveling function, allowing the arms to self-adjust to terrain variations through passive mechanical contact, reducing both manufacturing precision requirements and control system complexity
Data Source
AI summary
A chassis for a lift device includes a base, an arm, and a first actuator. The base has a first end and an opposing second end. The first end defines an arm interface and a pivot actuator interface. The arm includes a longitudinal portion pivotably coupled to the arm interface and a lateral portion extending from the longitudinal portion. The lateral portion defines a second pivot actuator interface. The lateral portion is configured to support a tractive element. The pivot actuator extends between the first pivot actuator interface and the second pivot actuator interface. At least a portion of a bottom surface of the lateral portion has a sloped profile.