A system for monitoring a condition of a sickle of a header of an agricultural machine. The system includes a knife guard mounted to the header, a knife section of the sickle that is configured to move either along or with respect to a surface of the knife guard, and a sensor either mounted to the knife guard or another surface of the header for sensing the condition of the knife section.

A system for monitoring a condition of a sickle of a header of an agricultural machine. The system includes a knife guard mounted to the header, a knife section of the sickle that is configured to move either along or with respect to a surface of the knife guard, and a sensor either mounted to the knife guard or another surface of the header for sensing the condition of the knife section.

The cutter guard assembly includes a cutter bar assembly, a window frame, and a floor sheet. The cutter bar assembly has a cutter bar and a reciprocating knife assembly operatively connected to a knife drive. The window frame is rigidly attached to the cutter bar. The window frame includes an opening through which a knife arm of the reciprocating knife assembly extends through. The floor sheet extends rearwardly from the cutter bar and pivots relative to the window frame.

The cutter guard assembly includes a cutter bar assembly, a window frame, and a floor sheet. The cutter bar assembly has a cutter bar and a reciprocating knife assembly operatively connected to a knife drive. The window frame is rigidly attached to the cutter bar. The window frame includes an opening through which a knife arm of the reciprocating knife assembly extends through. The floor sheet extends rearwardly from the cutter bar and pivots relative to the window frame.

A sickle guard counter-knife insert includes a pair of counter-knives. Each counter-knife defines a channel for an operable sickle bar between mutually-coupled upper and lower portions. The counter-knives and a connecting crossbar are formed together as an integral unit.

A sickle guard counter-knife insert includes a pair of counter-knives. Each counter-knife defines a channel for an operable sickle bar between mutually-coupled upper and lower portions. The counter-knives and a connecting crossbar are formed together as an integral unit.

The present invention provides a switchable cutting blade paired with a harvester knife guard. The switchable cutting blade comprises a switchable cutting blade assembly in which a knife guard is not included and which is provided with notches, so that waste blockage can be cleaned automatically. The switchable cutting blade assembly comprises a cutting bucket steel plate and a plurality of cutting blade bottom frames which is arranged on the cutting bucket steel plate and is closely connected. Each cutting blade bottom frame comprises a triangular part A and a groove frame which is integrated with the triangular part A. Each of the groove frames and the corresponding cutting blade bottom frame form an ┘ shape; each two adjacent cutting blade bottom frames are fixed by a crossbar to form a new knife guard. Each cutting blade bottom frame is provided with a cutting blade component. Each cutting blade component comprises a blade part and a mounting part arranged at the rear end of the blade part. Each mounting part comprises a groove which is fixed on the corresponding groove frame. The switchable cutting blade disclosed by the present invention has the main advantages that a mounting face C and the corresponding cutting blade bottom frame can be fixed at the cutting bucket steel plate together by screws. A new knife guard can also be directly welded on the cutting bucket steel plate.

A header for an agricultural harvester including a draper frame. A conveyor having a fore end and an aft end is supported by the draper frame and a draper seal is adjustably attached to the draper frame adjacent the fore end of the conveyor. The draper seal covers a bead seal at the fore end of the conveyor and extends substantially along the width of the fore end of the conveyor. The draper seal includes a first portion attached to the draper frame, a second portion extending forwardly from the first portion, a third portion extending upwardly from the second portion, and a fourth portion extending rearwardly from the third portion. The second, third and fourth portions surround and cover the conveyor bead seal.

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.

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.