Mobile Crane Outrigger Clamping Lock for Continuous Positioning
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Solution Overview
Problem
Existing mobile cranes face challenges in maintaining outrigger position stability due to limited bolting positions, leading to potential displacement and reduced tipping stability during operation.
Innovation Solution
A mobile crane support device with a locking mechanism that uses a clamping body and run-up surface to prevent unwanted movement of support segments relative to each other, ensuring stable outrigger positioning through frictional engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical bolting is used to fix outrigger position, then outrigger stability is improved, but the number of possible bolting positions is limited
Solution Approach 1:
The outrigger system is divided into multiple segments (first support segment fixed to undercarriage, second support segment with support foot) that can move relative to each other. The locking device segments the positioning function, allowing continuous position adjustment while maintaining stability through the clamping mechanism.
Solution Approach 2:
The locking device transitions from static mechanical bolting to a dynamic clamping system. The clamping body can engage and disengage freely, allowing the outrigger to be positioned continuously along its travel path while maintaining reliable fixation when clamped, resolving the contradiction between adaptability and stability.
2Adaptability or versatility
If outrigger position is allowed to vary freely, then adaptability is improved, but position stability deteriorates
Solution Approach 1:
The locking device is designed to be self-activating through the run-up surface geometry. When the outrigger moves away from the support foot, the run-up surface automatically pushes the clamping body against the outrigger, creating self-locking without requiring external control systems or continuous monitoring.
3Reliability
If continuous monitoring of outrigger position is implemented, then position control is improved, but device complexity increases
Solution Approach 1:
The patent replaces electronic monitoring and control systems with a purely mechanical self-locking mechanism. The run-up surface and clamping body create automatic position fixation through mechanical interaction, eliminating the need for sensors, controllers, and continuous electronic monitoring.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The locking device effectively maintains outrigger stability by preventing translational and rotational movements, enhancing tipping stability and ensuring secure crane operation in various conditions.
Implementation Method 1
a displacement movement of the second support segment in a direction away from the support foot causes an increase in the force applied by the clamping body to the run-up surface and thus causes the second support segment to be fixed relative to the first support segment
Data Source
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AI summary
The invention relates to a mobile crane outrigger with a first support segment (1), a second support segment (2), and a locking device (4) for preventing movement of the second support segment (2) in the direction of travel (T) and in any relative position between the first support segment (1) and the second support segment (2). The locking device comprises a clamping element which is held in contact with a bearing surface formed between the first and second support segments by a holding device. The clamping element is mounted relative to the first and second support segments such that a movement of the second support segment in a direction away from the outrigger foot causes an increase in the force applied by the clamping element to the bearing surface, thus locking the second support segment (2) relative to the first support segment (1). The invention further relates to a mobile crane with such an outrigger.