Samsung Heavy Industries Co., Ltd.

Sang T Jeong

Jin Han Lee

Jin T Kim

Ju K Kim

Bong D Hoang

Jang U Jo

Sang C Heo

Keun T Lee

Chan H Lee

A control system for automatically controlling the operation of actuators of an excavator. The control system of the invention provides several advantages in that the travelling mode of the travelling motors is automatically changed between the first and second step travelling modes in order to efficiently correspond to the load imposed on the travelling motors depending on the ground surface condition, the brake mechanism for the swing motor section is controlled with an adjustable timing control, the synchronous operation of the swing motor and the boom cylinder is controlled by simply setting a relative actuating velocity therebetween, flow rate of hydraulic fluid from the main hydraulic pumps to each actuator is automatically controlled in case of handling the control levers/pedals for initiating the actuators or stopping the actuating of the actuators, flow rate of the hydraulic fluid for the cylinder actuators in order to drive the cylinder actuators without occurrence of shock at an end of cylinder of each cylinder actuator, a lifting operation of an excavator is adjustably controlled so as to prevent a tipping accident of the excavator.

Control system for automatically controlling actuators of an excavator

An automatic actuating system for actuators of excavator. The system of this invention automatically controls the bucket which is overloaded to be free from the overloaded state thereof, the bucket to maintain an angular position with respect to the absolute line of the ground surface so as to prevent the objects contained in the bucket from being dropped, the bucket cylinder and the boom cylinder to accomplish the desired surface finishing operation by handling for the dipper cylinder, actuators to limit the operational ranges thereof, optimal quantity of hydraulic fluid flow of the main hydraulic pumps for respective actuators, and the pre-running for the actuators.

Process for automatically controlling actuators of excavator

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Seoul, South Korea

Sang T Jeong