PLC-control-based electric flat carriage with two independent-driving wheels arranged diagonally

Abstract

The invention relates to a PLC-control-based electric flat carriage with two independent-driving wheels arranged diagonally. The electric flat carriage comprises a carriage frame, the two driving wheels arranged diagonally, two universal wheels arranged diagonally, independent power driving mechanisms, independent steering mechanisms, a PLC electric control cabinet and a drawer type battery box, wherein each independent power driving mechanism and each independent steering mechanism are arranged on one side of the corresponding driving wheel and connected with the driving wheel. The universal wheels are fixed to the bottom of the carriage frame through mounting bearing seats. Each independent power driving mechanism is provided with a driving spindle, a direct current motor, a speed reducer and a brake. Each independent steering mechanism is provided with a rotating base, a rotating head, a hydraulic steering oil cylinder and a hydraulic power unit, wherein the hydraulic power unit is provided with a hydraulic control valve. Each wheel rotating shaft is provided with a wheel rotating speed sensor. Each steering worm wheel is provided with a rotating angle sensor. The direct current motors, the hydraulic control valves, the wheel rotating speed sensors and the rotating angle sensors are all electrically connected with the PLC electric control cabinet. The drawer type battery box supplies power to the direct current motors and the PLC electric control cabinet.

Description

technical field [0001] The invention relates to an electric flat car with full steering function, in particular to a two-wheel independently driven electric flat car with diagonal arrangement based on PLC control. Background technique [0002] Electric flat car, also known as electric flat car, straddle car, electric rail car, level car, trolley, etc., is a heavy cargo transportation vehicle in the factory. It is not afraid of being dirty, easy to maintain, and has a long service life. Because of its convenience, robustness, economy, practicality, and easy cleaning, it has become the first choice for heavy objects to be frequently transported at short distances within the plant and between plants. . [0003] Most of the existing electric flat cars use hydraulic steering mechanism to realize steering, or use universal wheels and differential speed control to realize steering, and use electromagnetic relay to realize the control of the motor, and then realize the motion contr...

AI Technical Summary

Problems solved by technology

Such electric flat cars often have the following deficiencies: (1) The hydraulic mechanism has the problem of oil leakage, which requires frequent inspection and maintenance of the hydraulic steering mechanism; (2) The control of the electromagnetic relay has certain safety hazards, and the operator must Only by moving with the car can the control of the electric flat car be realized; (3) the steering is realized by using universal wheels and differential speed, the direction control accuracy is poor, and the electric flat car is easy to run off; (4) the turning radius of this type of electric flat car is too large Large, poor passing capacity, does not have the function of in-situ rotation

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