Transfer platform cart traveling and flap lifting control method

Abstract

A transfer platform cart traveling and flap lifting control method is characterized in that after a cart travels at a target position, a left flap is lifted for limiting connection, and an 'insufficient traveling condition' coil is disconnected; transfer bridge actions are performed, namely, a driver of a transfer platform presses a 'manual forward' button on a control touch screen, a circuit enables a normally open contact to be connected by lifting a flap, enables a limiting normally open to be connected by lifting the flap, enables the flap to be overload normally closed, enabling a coil to get electricity by lifting the flap, enables a contactor to pull in by lifting the flap, and enables a transfer platform bridge flap to be lifted to finish actions. Adopting of the control method can effectively guarantee human safety of putters and safe transport of passenger vehicles, so that substantial improvement is made in terms of guaranteeing of safety coefficient, major safety accidents are effectively avoided, and huge economic loss caused by bus rollover can be avoided.

Description

technical field [0001] The invention relates to a method for controlling the traveling of a cart and the lifting and lowering of a flap of a cart moving platform device. Background technique [0002] In the design of the moving platform device, when the cart is moving, it is more likely to use the flap to lift and then walk. This method has become a trend. It is a good method to use PLC and frequency converter to control the turning plate of the cart. Since the car moving platform is a piece of equipment that has very high requirements on safety and technology, it is necessary and necessary to coordinate the control of the cart and the turning plate. [0003] At present, the way of moving and lifting the trolley on the moving platform is automatically controlled by the inverter and the logic program inside the PLC. Pressing the "Reverse" button will cause the bridge flap to rise automatically, resulting in serious accidents such as the rollover of the passenger car and the...

AI Technical Summary

Problems solved by technology

[0003] At present, the way of moving the cart and lifting the turning plate is automatically controlled by the inverter and the logic program inside the PLC. After the cart arrives at the destination, the operator accidentally touches the "manual forward" button or the "manual After pressing the "Reverse" button, the flap of the bridge will be automatically lifted, which will cause serious accidents such as the rollover of the passenger car and the casualties of the workers who are pushing the cart.

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