OPENTECHNICAL PUBLICATION
OT-2026-000003330

Control system for automatically controlling actuators of an excavator

Published: 2026-09-15T20:10:56.072218Z
Permanent URL: https://opentechnical.org/p/OT-2026-000003330
Categories: Industrial Motion & Power Transmission > Fluid Power

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ABSTRACT

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.

1. Drawings

[0001] Sheet 1.

[0002] Sheet 2.

[0003] Sheet 3.

[0004] Sheet 4.

[0005] Sheet 5.

[0006] Sheet 6.

[0007] Sheet 7.

[0008] Sheet 8.

[0009] Sheet 9.

[0010] Sheet 10.

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OpenTechnical publication OT-2026-000003330
Published 2026-09-15T20:10:56.072218Z
https://opentechnical.org/p/OT-2026-000003330