An excavation machine is provided. The excavation machine includes an excavation device and an excavation device drive system that powers the excavation device to move cutting tools, wherein the excavation device drive system includes an electric motor and a motor controller, wherein the motor controller is programmed to control the speed of the excavation device drive system. The motor controller sets the speed of the excavation device drive system at a predetermined excavation speed based on a predetermined target power, the predetermined target power being associated with a target torque generated by the electric motor. The speed of the excavation device drive system is set at a predetermined first excavation speed when a power transmitted to the electric motor is below the predetermined target power and at a predetermined second excavation speed to maintain the power transmitted to the electric motor at the predetermined target power.

An excavator bucket locking and security device that is engageable with a backfill blade of an excavator. The locking and security device has a connection device for connection to the excavator bucket. The connection device includes an upper pipe for engaging the bucket's upper receptacles. The connection device also has a lower pipe that is positionable next to the bucket's lower receptacles. An insertable pole is insertable through the lower pipe and through the lower bucket receptacles. The locking and security device also includes a pipe connection device for connecting the upper pipe to the lower pipe. A hook is connected to the pipe connection device. The hook is engageable with a backfill blade of an excavator.

An excavator bucket locking and security device that is engageable with a backfill blade of an excavator. The locking and security device has a connection device for connection to the excavator bucket. The connection device includes an upper pipe for engaging the bucket's upper receptacles. The connection device also has a lower pipe that is positionable next to the bucket's lower receptacles. An insertable pole is insertable through the lower pipe and through the lower bucket receptacles. The locking and security device also includes a pipe connection device for connecting the upper pipe to the lower pipe. A hook is connected to the pipe connection device. The hook is engageable with a backfill blade of an excavator.

A work machine includes a frame, a linkage assembly, a work implement connected to the linkage assembly, and a grade control calibration system. The grade control calibration system includes a vision processing system, which includes a sensor fixed to the linkage assembly and a first controller. The vision processing system is configured to measure a length of a cutting portion of the work implement, and to transmit the length of the cutting portion of the work implement. The grade control calibration system also includes a grade control system in communication with the vision processing system and the linkage assembly. The grade control system includes a second controller configured to receive the length of the cutting portion of the work implement from the first controller, and to calibrate a position of the work implement based on the received length of the cutting portion of the work implement.

A work machine includes a frame, a linkage assembly, a work implement connected to the linkage assembly, and a grade control calibration system. The grade control calibration system includes a vision processing system, which includes a sensor fixed to the linkage assembly and a first controller. The vision processing system is configured to measure a length of a cutting portion of the work implement, and to transmit the length of the cutting portion of the work implement. The grade control calibration system also includes a grade control system in communication with the vision processing system and the linkage assembly. The grade control system includes a second controller configured to receive the length of the cutting portion of the work implement from the first controller, and to calibrate a position of the work implement based on the received length of the cutting portion of the work implement.