A cutting system for a header of an agricultural machine includes a knife guard having a plurality of guards that are spaced apart by a guard pitch, and a knife section that is configured to move with respect to the knife guard for cutting crop material. The knife section includes a plurality of knives that are spaced apart by a knife pitch. The guard pitch is neither equal to nor is a whole number multiple of the knife pitch.

Systems and method for linearly displacing an object, such as a cutter or other component, in response to a rotation of a pivotable arm are disclosed. The systems and method encompass one or more actuators, such as hydraulic cylinders, to pivot a pivotable arm pivotable about an axis. A flexible component coupled to an end of the pivotable arm is displaced in response to the rotational motion of the pivotable arm. Movement of the flexible component in response to rotation of the pivotable arm is converted into linear motion via curved surface on which the flexible component rides. The pivotable arm is rotated in response to actuation of one or more actuators, such as one or more hydraulic cylinders, coupled to the pivotable arm.

A reciprocating blade apparatus includes a pair of reciprocating blades stacked on one another in a thickness direction, and a transmission case including a power train configured to reciprocate the pair of reciprocating blades. The power train includes a pair of eccentric cams, and a pair of reciprocating members including fitting holes in which the eccentric cams are fitted, respectively. The pair of reciprocating members is guided to be able to move along an axis line which is parallel to a moving direction of the pair of reciprocating blades and runs through a rotation axis of the eccentric cams.

An agricultural system includes an arm of a header. The arm is configured to rotate about a pivot joint. The agricultural system also includes a fluid-filled biasing member, an actuator, and a controller. The fluid-filled biasing member is configured to couple to the arm and to impart a torque onto the arm. The actuator is coupled to the fluid-filled biasing member and is configured to move the fluid-filled biasing member relative to the actuator to change the torque imparted by the fluid-filled biasing member onto the arm. The controller configured to receive an input indicative of a target flotation pressure of the arm output a signal to instruct the actuator to set a position of the fluid-filled biasing member relative to the actuator based at least in part on the target flotation pressure of the arm.

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 header for an agricultural harvester including a knife drive disposed at a forward end of a feeder conveyor. An infeed drive is disposed adjacent the feeder conveyor, the infeed drive having an input and an output. An input shaft is drivingly connected to the infeed drive input, and an output shaft has a first end connected to the infeed drive output and a second end drivingly connected to the knife drive. The knife drive can be a center knife drive and the infeed drive, the input shaft and the output shaft operate as a fully mechanical drive power supply for the center knife drive which overcomes the deficiencies of hydraulically-driven knife drives.

A header for an agricultural harvester including a knife drive disposed at a forward end of a feeder conveyor. An infeed drive is disposed adjacent the feeder conveyor, the infeed drive having an input and an output. An input shaft is drivingly connected to the infeed drive input, and an output shaft has a first end connected to the infeed drive output and a second end drivingly connected to the knife drive. The knife drive can be a center knife drive and the infeed drive, the input shaft and the output shaft operate as a fully mechanical drive power supply for the center knife drive which overcomes the deficiencies of hydraulically-driven knife drives.

An agricultural system includes an arm of a header. The arm is configured to rotate about a pivot joint. The agricultural system also includes a fluid-filled biasing member, an actuator, and a controller. The fluid-filled biasing member is configured to couple to the arm and to impart a torque onto the arm. The actuator is coupled to the fluid-filled biasing member and is configured to move the fluid-filled biasing member relative to the actuator to change the torque imparted by the fluid-filled biasing member onto the arm. The controller configured to receive an input indicative of a target flotation pressure of the arm output a signal to instruct the actuator to set a position of the fluid-filled biasing member relative to the actuator based at least in part on the target flotation pressure of the arm.

The present invention relates to a finger-bar-type mower in which blades reciprocate left and right to mow grass. The mower includes: a connection gear which is power-connected to a driving means of the mower; a reduction gear connected to the connection gear; a shaft rotating according to rotation of the reduction gear; a bridge accommodating and supporting the connection gear and the reduction gear; a blade which is power-connected to the shaft and is reciprocated left and right according to rotation of the shaft, the blade including cutting edges; a guide part supporting the bridge and extending along the blade; and wheels respectively connected to both ends of the guide part, wherein the shaft is disposed in center regions of the blade and the guide part.