Robotic Load-Securing Side Devices for Stable AGV Transport
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Solution Overview
Problem
Existing automated guided vehicles face stability issues when transporting loads of varying sizes, particularly during turns and changes in direction, leading to reduced speed and increased risk of instability.
Innovation Solution
A robotic vehicle equipped with a securing system featuring opposing side devices and articulated quadrilateral mechanisms, powered by linear actuators, which adapt to load size and stabilize the load during transport, ensuring secure and efficient movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If automated guided vehicles transport loads of varying sizes without securing means, then the vehicle structure remains simple, but stability problems occur during turns and changes in direction
Solution Approach 1:
The patent applies the dynamics principle by implementing side devices that can change their position and configuration based on the load being transported. The side devices include contact elements that can move between different positions to adapt to varying load sizes, and the articulated quadrilateral mechanisms allow the structure to dynamically adjust its geometry. This dynamic adaptation ensures load stability during turns and direction changes without requiring a completely complex fixed structure for every possible load configuration.
Solution Approach 2:
The patent segments the securing system into modular components: side devices, contact elements, articulated quadrilateral mechanisms, and linear actuators. Each component performs a specific function and can be independently controlled. The side devices are divided into multiple contact elements that can independently adjust, allowing the system to handle various load sizes efficiently. This segmentation reduces overall system complexity by breaking down the securing function into manageable, interchangeable parts.
2Productivity
If automated guided vehicles move at high speed without load securing, then productivity increases, but the risk of load instability and accidents increases
Solution Approach 1:
The patent implements preliminary action by activating the securing system before the vehicle begins movement or enters turns. The control unit activates the linear actuators to position the contact elements against the load prior to motion, ensuring the load is secured in advance. This preliminary securing action prevents load instability during high-speed operation and turns, allowing the vehicle to maintain high productivity while ensuring transport safety through proactive load stabilization.
Solution Approach 2:
The patent employs feedback mechanisms where sensors detect load position and vehicle motion parameters, and the control unit continuously adjusts the linear actuators to maintain optimal securing force. The system monitors the load's stability during transport and automatically adjusts the contact elements' positions and forces in real-time. This feedback control ensures that the load remains securely stabilized even at high speeds and during directional changes, maintaining both productivity and reliability.
3Stability of the object's composition
If securing means are added to automated guided vehicles, then load stability improves, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies universality by designing side devices that can handle multiple load types and sizes with a single configuration. The articulated quadrilateral mechanisms and adjustable contact elements allow the same securing system to adapt to different load geometries and dimensions. This multi-functionality reduces manufacturing complexity compared to having separate securing mechanisms for each load type, as the system can be produced as a standardized module that works universally across various transport scenarios.
Solution Approach 2:
The patent utilizes parameter changes by allowing the securing system's geometric parameters to vary dynamically. The articulated quadrilateral mechanisms change their configuration parameters (angles, lengths of links) based on the load being transported. The linear actuators adjust the position and force parameters of the contact elements. These parameter changes enable a single manufactured system to adapt to different loads without requiring multiple specialized components, thereby maintaining manufacturing simplicity while achieving load stability.
4Reliability
If low speed is used to maintain load stability, then safety improves, but productivity decreases
Solution Approach 1:
The patent resolves the speed-stability contradiction through dynamics by implementing a securing system that actively adapts during motion. The side devices and contact elements dynamically adjust their positions and forces in response to vehicle acceleration, deceleration, and turns. The control unit modifies the securing parameters in real-time based on motion parameters, allowing the vehicle to maintain high speed while ensuring load stability through continuous dynamic adjustment rather than relying on reduced speed.
Solution Approach 2:
The patent uses feedback control to maintain load stability at high speeds. Sensors monitor load position, vehicle motion, and securing force, and the control unit continuously adjusts the linear actuators to maintain optimal securing conditions. This real-time feedback allows the system to compensate for dynamic forces generated during high-speed operation and turns, ensuring safety without requiring speed reduction. The feedback loop enables the vehicle to move quickly while the securing system responds automatically to maintain stability.
Data Source
AI summary
A securing system for securing a load, made up of two opposing side devices that are configured to secure the load when it is resting on the roller conveyor. Each of said side devices is fixed to a pair of vertical frames that are connected at the bottom to a base. The side devices are configured to take an unfolded active position in which contact elements of the two side devices push against two opposite surfaces of the load, and a folded inactive position in which the contact elements are separated from said opposite surfaces of the load. Each side device includes at least one power element associated with a torque control system that is configured to control the opposing pushing force.


