Swing Axle Floating Locking for Aerial Platform Stability
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Solution Overview
Problem
The existing aerial work platforms face safety issues due to overturning, locking failure, hydraulic oil leakage, and sliding of the hydraulic cylinder during floating operations, which can lead to accidents.
Innovation Solution
A floating device for aerial work platforms is designed with a pressure oil source, controller, left and right floating devices, each comprising a hydraulic cylinder, balance valve, and locking device, where the balance valves and locking devices are connected to the controller to control the floating and locking of the swing axle, ensuring the four tires remain grounded and preventing hydraulic oil leakage and cylinder sliding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single locking device is used to lock the hydraulic cylinder, then the device complexity is reduced, but the reliability decreases due to potential locking failure, leakage, or sliding
Solution Approach 1:
The patent applies prior cushioning by incorporating a backup locking mechanism that activates automatically if the primary locking device fails. The system includes a second locking device that remains in standby and can take over locking function, preventing catastrophic failure from single-point locking defects.
Solution Approach 2:
The patent implements local quality by providing different locking mechanisms at different locations in the hydraulic system. The first locking device is positioned at the oil port, while the second locking device is positioned at the piston rod end, ensuring that each critical location has appropriate locking protection tailored to its specific failure modes.
2Ease of operation
If the floating cylinder position is left uncertain during floating operation, then the ease of operation is improved, but the stability deteriorates due to potential overturning
Solution Approach 1:
The patent applies dynamics by enabling the hydraulic cylinder to transition between fixed and movable states. During floating operation, the locking devices are released allowing the cylinder to move dynamically with terrain changes. When stability is required, the locking devices engage to fix the cylinder position, providing on-demand stability control.
Solution Approach 2:
The patent implements feedback through sensors that monitor the vehicle's stability status and automatically control the locking devices. When the system detects potential overturning or instability, it sends feedback signals to engage the locking devices, thereby automatically correcting the stability issue without requiring manual intervention.
3Stability of the object's composition
If the hydraulic cylinder is locked during floating operation, then the stability is improved, but the adaptability to ground changes deteriorates
Solution Approach 1:
The patent applies periodic action by implementing intermittent locking and unlocking cycles. The locking devices are engaged periodically when stability is required (e.g., during lifting operations) and released periodically when adaptability is needed (e.g., during movement over uneven terrain). This periodic switching allows the system to alternate between stable and adaptive states as operational requirements change.
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 solution effectively prevents overturning by maintaining the tires in contact with the ground, ensuring stability and safety by locking the hydraulic cylinders in case of failure or leakage, thereby preventing accidents.
Implementation Method 1
the left hydraulic cylinder and the right hydraulic oil push the swing axle up and down under the combined action of the pressure oil and the ground
Implementation Method 2
the left balance valve is set on the oil port of the left hydraulic cylinder, the left balance valve is connected with the pressure oil source through the left locking device
Data Source
AI summary
A floating device for an aerial work platform, comprising a pressure oil source (100), a controller (200), a left floating device, and a right floating device, a chassis (700), and a swing axle (600). The left floating device comprises a left hydraulic cylinder (300), a left balance valve (310), and a left locking device; the right floating device comprises a right hydraulic cylinder (400), a right balance valve (410), and a right locking device; one end of the left hydraulic cylinder (300) and one end of the right hydraulic cylinder (400) are hinged on the chassis (700); the swing axle (600) is hinged with the chassis (700); the other end of the left hydraulic cylinder (300) and the other end of the right hydraulic cylinder (400) are hinged on two opposite ends of the swing axle (600); and the left locking device and the right locking device constitute second-level locking of the left hydraulic cylinder (300) and the right hydraulic cylinder (400), thereby ensuring that the aerial work platform will not tip over due to the sliding of the hydraulic cylinders.