Stabilized Machine With Dynamic Ground Support Control
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Solution Overview
Problem
Existing mobile elevating work platforms and cranes face limitations in their working volume due to the fixed minimum ground support area defined by stabilizers, restricting their operational flexibility and safety, especially when operating on uneven or obstacle-laden surfaces.
Innovation Solution
A stabilized machine equipped with a self-propelled base frame, a motorized turntable, and rotatable stabilizers, along with a control system that uses sensors to monitor stabilizer inclination and adjust operational parameters based on real-time ground support conditions, allowing dynamic adaptation of the working volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ground support area is minimized to ensure machine stability, then safety is improved, but the working volume of the elevating arm is restricted
Solution Approach 1:
The patent applies dynamics by making the ground support area adjustable rather than fixed. The stabilizers can be positioned at different extensions along their travel paths, allowing the ground support area to dynamically adapt to terrain conditions. This enables the machine to maintain stability while optimizing the working volume of the elevating arm based on actual operational needs.
Solution Approach 2:
The patent changes the parameter of ground support area from a fixed minimum value to a variable parameter. By adjusting the extension of stabilizers within their travel paths, the ground support area can be modified to match terrain conditions, thereby resolving the contradiction between maintaining stability and maximizing working volume.
2Device complexity
If the stabilizers are fixed in position to simplify the structure, then device complexity is reduced, but adaptability to different terrain conditions deteriorates
Solution Approach 1:
The patent implements dynamic adjustability of stabilizer positions along their travel paths. This allows the machine to adapt to various terrain conditions without requiring complex reconfiguration mechanisms. The stabilizers can be positioned at different extensions to optimize ground support area while maintaining relatively simple structural design.
3Reliability
If the minimum ground support area is used to ensure stability, then safety is improved, but operational flexibility deteriorates
Solution Approach 1:
The patent transforms the ground support area from a fixed minimum parameter to a variable parameter that can be adjusted according to terrain conditions. This allows the machine to maintain safety through adequate ground support while simultaneously improving operational flexibility by adapting to different working scenarios and terrain types.
Data Source
AI summary
A stabilized machine including a self-propelled base frame movably supported by a motorized ground support arrangement, a motorized turntable rotatably supported on top of the support plane of the base frame, an elevating arm articulated to the turntable and at a free end adapted to be fixed to an operating arrangement, stabilizers each rotatably associated with the base frame about an axis of oscillation lying on a plane orthogonal to the axis of rotation of the turntable, alternatively between a working position supported on the ground in addition to or as an alternative to the support arrangement, and a rest position that is raised off the ground, and control system comprising sensors, one for each of the stabilizers. Each sensor is configured to detect a first parameter indicative of an inclination of the respective stabilizer about its axis of rotation, and an electronic control unit operatively coupled to the sensors.