US 11,905,679 B2
Machine and method of moving upper structure of machine
Saravanan S. Mathivanan, Chennai (IN); and Sridhar Thondikulam Raveendran, Chennai (IN)
Assigned to Caterpillar Global Mining Equipment LLC, Denison, TX (US)
Filed by Caterpillar Global Mining Equipment LLC, Denison, TX (US)
Filed on Dec. 2, 2020, as Appl. No. 17/109,308.
Claims priority of application No. 201911049406 (IN), filed on Dec. 2, 2019.
Prior Publication US 2021/0164195 A1, Jun. 3, 2021
Int. Cl. E02F 9/20 (2006.01); E02F 9/16 (2006.01); E02F 9/26 (2006.01)
CPC E02F 9/2033 (2013.01) [E02F 9/166 (2013.01); E02F 9/26 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A machine operating on a work surface, the machine comprising:
a boom member;
a feed assembly movably coupled to the boom member;
a work device coupled at a distal portion of the feed assembly;
a movable carrier coupled to the boom member, the movable carrier including a lower structure and an upper structure movably coupled with the lower structure, the upper structure is configured to pitch, roll, and yaw relative to the lower structure;
an actuator assembly adapted to move the upper structure relative to the lower structure;
a sensor module mounted on the machine, wherein the sensor module is configured to generate a first signal indicative of a first pitch angle of the machine relative to a non-inclined surface; and
a control module communicably coupled to the sensor module and the actuator assembly, wherein the control module is configured to:
receive the first signal indicative of the first pitch angle of the machine from the sensor module;
generate a second signal for controlling a movement of the actuator assembly based on the first signal; and
transmit the second signal to the actuator assembly in order to move the upper structure by a second pitch angle, such that a plane defined by an operator cabin of the machine is substantially parallel to the non-inclined surface, wherein the second pitch angle is opposite in direction to the first pitch angle.