Truck Crane Outrigger Control for Air Suspension Protection
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Solution Overview
Problem
The air suspension in work vehicles can be damaged or deteriorated when the outrigger device is jacked up with the air suspension in the exhaust state, as it rapidly extends due to the weight supported, leading to potential damage or deterioration.
Innovation Solution
A work vehicle with a shaft, suspension device, locking member, and control unit that restricts the outrigger device's movement to the ground contact position only when the air suspension is in the exhaust state and the locking member is locked, preventing sudden extension and potential damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the outrigger device is jacked up with the air suspension in the exhaust state, then the outrigger device can be positioned for work support, but the air suspension rapidly extends due to the weight supported, causing damage or deterioration
Solution Approach 1:
The locking member is activated before the outrigger device is jacked up to restrict the air suspension extension in advance. The control unit detects the outrigger position and pre-locks the locking member to prevent rapid extension when the outrigger contacts the ground, thereby protecting the air suspension from damage
Solution Approach 2:
The locking member acts as an intermediary mechanism between the air suspension and the outrigger device. It restricts the extension action of the air suspension during outrigger positioning, allowing the outrigger to be safely jacked up without causing rapid air suspension extension that would lead to damage
2Reliability
If the air suspension is restricted from extending in the exhaust state, then damage or deterioration is prevented, but the outrigger device cannot be moved to the ground contact position
Solution Approach 1:
The system dynamically adjusts the locking member state based on the outrigger position and air suspension state. The control unit monitors conditions and activates the locking member only when appropriate (outigger not at ground contact position and air suspension in exhaust state), allowing normal operation when conditions are safe
Solution Approach 2:
The control unit uses feedback from sensors detecting the outrigger position and air suspension state to control the locking member. When the outrigger approaches the ground contact position or the air suspension is not in the exhaust state, the control unit deactivates the locking member, allowing the outrigger to move freely
Data Source
AI summary
In a truck crane, in a state where an air suspension is in an exhaust state and a locking member is not in a locked position, a control unit restricts a movement of a front outrigger and a rear outrigger to a ground contact position, and in a state where the air suspension is in the exhaust state and the locking member is in the locked position, the control unit allows the movement of the front outrigger and the rear outrigger to the ground contact position.