A cutting system for a harvesting header includes a transversely extending cutter bar, a transversely extending knife back, a knife section mounted to the knife back having a knife edge extending generally in a forward direction, a knife guard component having a front guard portion and a rear portion interconnected by a medial portion having a recess. The medial portion is configured for receiving a lengthwise portion of the knife back with the knife section being received into, and the knife section is operable to move transversely into and out of a cutting slot in the front guard portion. A hold down component is located between an upper surface of the rear portion of the knife guard component and an underneath surface of the cutter bar, and an attachment mechanism is operable to secure the knife guard component and the hold down component to the underneath surface of the cutter bar.

A header for an agricultural vehicle. The header includes a header frame and an elongate sickle knife mounted along a leading edge of the header. The header further includes an actuator for reciprocally moving the elongate sickle knife in its longitudinal direction relative to the header frame between a first position and a second position over an intermediate position. At least one accumulator extends between the header frame and the elongate sickle knife to accumulate energy during a first movement of the elongate sickle knife from the intermediate position towards at least one of the first position and the second position, and to release accumulated energy during a second movement of the elongate sickle knife opposite to the first movement.

A header for an agricultural vehicle. The header includes a header frame and an elongate sickle knife mounted along a leading edge of the header. The header further includes an actuator for reciprocally moving the elongate sickle knife in its longitudinal direction relative to the header frame between a first position and a second position over an intermediate position. At least one accumulator extends between the header frame and the elongate sickle knife to accumulate energy during a first movement of the elongate sickle knife from the intermediate position towards at least one of the first position and the second position, and to release accumulated energy during a second movement of the elongate sickle knife opposite to the first movement.

A cutting assembly for an agricultural harvesting head is provided. The cutting assembly includes a first cutterbar, a second cutterbar, and a knife drive gearbox configured to drive linear reciprocating motion of the first cutterbar and the second cutterbar. The gearbox includes a cam shaft extending along a rotational axis from a first end to a second end. The cam shaft includes a first cam follower groove located near the first end and a second cam follower groove located near the second end. The gearbox further includes a drive mechanism, a first output shaft coupled to a first cam follower that travels in the first cam follower groove, and a second output shaft coupled to a second cam follower that travels in the second cam follower groove. The first output shaft is coupled to the first cutterbar and the second output shaft is coupled to the second cutterbar.

A cutting assembly for an agricultural harvesting head is provided. The cutting assembly includes a first cutterbar, a second cutterbar, and a knife drive gearbox configured to drive linear reciprocating motion of the first cutterbar and the second cutterbar. The gearbox includes a cam shaft extending along a rotational axis from a first end to a second end. The cam shaft includes a first cam follower groove located near the first end and a second cam follower groove located near the second end. The gearbox further includes a drive mechanism, a first output shaft coupled to a first cam follower that travels in the first cam follower groove, and a second output shaft coupled to a second cam follower that travels in the second cam follower groove. The first output shaft is coupled to the first cutterbar and the second output shaft is coupled to the second cutterbar.

A system and method for performing cutting operations with an agricultural implement includes a cutting member capable of cutting plant material supported on the agricultural implement. A vibration source is operatively coupled to the cutting member. The vibration source is configured to generate a vibrational output at an ultrasonic frequency which is transmitted to the cutting member. The vibrational output is propagated through at least a portion of the cutting member to vibrate the cutting member as the plant material is being severed during the performance of the cutting operation.

A system and method for performing cutting operations with an agricultural implement includes a cutting member capable of cutting plant material supported on the agricultural implement. A vibration source is operatively coupled to the cutting member. The vibration source is configured to generate a vibrational output at an ultrasonic frequency which is transmitted to the cutting member. The vibrational output is propagated through at least a portion of the cutting member to vibrate the cutting member as the plant material is being severed during the performance of the cutting operation.

The present disclosure relates to a mower knife device with a knife bar and a dual blade cutting system. The dual blade cutting system includes an upper cutting knife and a lower cutting knife designed to be movable relative to one another. The upper cutting knife is connected to the knife bar by means of an upper retaining device. The lower cutting knife is connected to the knife bar by means of a lower retaining device. The upper retaining device is mounted on the knife bar by means of a guide bushing. A preloaded tension spring is arranged inside the guide bushing. The tensile force of the tension spring is designed to apply a contact pressure of the upper cutting knife to the lower cutting knife via the upper retaining device.

The present disclosure relates to a mower knife device with a knife bar and a dual blade cutting system. The dual blade cutting system includes an upper cutting knife and a lower cutting knife designed to be movable relative to one another. The upper cutting knife is connected to the knife bar by means of an upper retaining device. The lower cutting knife is connected to the knife bar by means of a lower retaining device. The upper retaining device is mounted on the knife bar by means of a guide bushing. A preloaded tension spring is arranged inside the guide bushing. The tensile force of the tension spring is designed to apply a contact pressure of the upper cutting knife to the lower cutting knife via the upper retaining device.

A drive arrangement for the reciprocating drive of a cutter bar comprises a hydraulic gear motor with a housing and a gearwheel, which is set in motion around a first axis by a hydraulic medium, and an eccentric drive, which comprises an eccentric element that can be rotatably driven by a gearwheel around a second axis parallel to the first axis, and a drive element connected to the eccentric element, which is, or can be, connected to the cutter bar.