Electrically-controlled hydraulically-driven steering device for mobile platform of agricultural robot

Abstract

The invention relates to a hydraulically-driven steering device, in particular to an electrically-controlled hydraulically-driven steering device for a mobile platform of an agricultural robot, which comprises a supporting plate, a double-acting single-piston-rod cylinder, a connecting rod, a hydraulic steering gear, a coupler, a stepping motor, an oil tank, a remote controller, a three-position four-way electromagnetic directional valve, a gerotor motor, a filter, a gasoline engine, a dual gear pump, a speed regulating valve and a one-way valve. The stepping motor is connected to a power input shaft of the steering gear through the coupler, the steering gear is a parallel four-rod steering gear, and the remote controller is used for controlling steering and turn angles of the stepping motor to change the expansion length of a piston rod, so that turn directions and the turn angles of wheels are controlled. The remote controller is used for adjusting the position of a valve spool of the three-position four-way electromagnetic directional valve to control steering of the hydraulic motor, so that advancing, retreating and stopping of a four-wheeled vehicle are realized. The speed regulating valve is added in front of the stepping motor so that stepless speed regulating can be realized, and the electrically-controlled hydraulically-driven steering device is simple in structure, convenient in operation and low in cost.

Description

technical field [0001] The invention relates to a hydraulically driven steering device, in particular to an electronically controlled hydraulically driven steering device for a mobile platform of an agricultural robot. Background technique [0002] Hydraulic technology is widely used in industry, agriculture, environmental protection and other fields. Compared with electric and mechanical transmission methods, hydraulic transmission has the advantages of stepless speed regulation, flexible component layout, easy overload protection, stable work, and self-lubricating components. Long service life, easy to achieve standardization and generalization and other advantages. In recent years, with the improvement of components and processing methods of hydraulic drive system, the performance, reliability and life of hydraulic drive system have been significantly improved. The hydraulic drive system can significantly improve the mobility of the system and greatly reduce the number of...

AI Technical Summary

Problems solved by technology

[0003] With the development of the national economy and the improvement of people's living standards, four-wheel vehicles have been widely used in people's lives, and can replace people for various labors. Dangerous and harsh environments are no longer suitable for people to directly control the driving and steering of the vehicle by hand on the vehicle. Especially the autonomous operation of farmland robots in the field requires a reliable driving method, and the remote control method is used to control the vehicle to move forward through the remote control and turning is an effective way to solve this problem

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