A mower comprises: a cutter housing having an inner hole in which an output shaft of a motor is inserted; and a motor cover provided above the cutter housing with a space therebetween, the motor cover covering the motor. Cooling air leadout openings for leading cooling air in the motor cover to the outside are formed in the motor cover, the cooling air leadout openings being positioned inward of a peripheral wall part of the motor cover and outward of the inner hole of the cutter housing.

A mower comprises: a cutter housing having an inner hole in which an output shaft of a motor is inserted; and a motor cover provided above the cutter housing with a space therebetween, the motor cover covering the motor. Cooling air leadout openings for leading cooling air in the motor cover to the outside are formed in the motor cover, the cooling air leadout openings being positioned inward of a peripheral wall part of the motor cover and outward of the inner hole of the cutter housing.

An agricultural vehicle includes a chassis and a header carried by the chassis. The header includes a cutterbar with at least one cutting unit. The at least one cutting unit includes a rotary driver; a rotatable disc coupled to the rotary driver; at least one knife mount coupled to a disc surface of the rotatable disc and including a locking portion biased toward the disc surface; and a knife locked in at least one direction by the locking portion, the knife defining at least one cutting edge.

A work vehicle includes a vehicle body, at least one obstruction sensor, at least one state sensor, and circuitry. A work device is attachable to the vehicle body. The at least one obstruction sensor is provided on the vehicle body to detect an obstruction to the work vehicle. The at least one state sensor is provided on at least one of the vehicle body and the work device to detect at least one state of the vehicle body and the work device. The circuitry is configured to determine an obstruction detection area based on the at least one state detected by the at least one state sensor, and to determine whether the obstruction exists within the obstruction detection area based on a sensor signal from the at least one obstruction sensor.

A work vehicle includes a vehicle body, at least one obstruction sensor, at least one state sensor, and circuitry. A work device is attachable to the vehicle body. The at least one obstruction sensor is provided on the vehicle body to detect an obstruction to the work vehicle. The at least one state sensor is provided on at least one of the vehicle body and the work device to detect at least one state of the vehicle body and the work device. The circuitry is configured to determine an obstruction detection area based on the at least one state detected by the at least one state sensor, and to determine whether the obstruction exists within the obstruction detection area based on a sensor signal from the at least one obstruction sensor.

An adjustable stalk stomper and/or chopper curtain assembly for a header of an agricultural harvester. The adjustable assembly comprises a control arm, at least one member connected to the control arm, wherein the at least one member is configured to knock down plant stalks and/or to shield the agricultural harvester from flying debris, and wherein the control arm is configured to provide for adjustment of the orientation of the at least one member relative to the ground and the header. Also disclosed are agricultural harvester headers comprising the above adjustable assembly and a frame having a toolbar, as well as agricultural harvesters comprising such headers and other machinery comprising such adjustable assemblies.

The present disclosure provides a traversal method and system, a robot and a readable storage medium. The method comprises: driving a robot to travel in a working region according to a predetermined mode and work synchronously; and adjusting the robot to continue working according to a predetermined first rule every time a turn sign is encountered, and adjusting the robot to return to the predetermined mode after the first rule is completed; wherein the first rule is: starting from the position where the turn sign is encountered, rotating clockwise or counterclockwise; after first rotation is carried out according to a first angle, continuing running for a first time according to the predetermined mode; and then, after second rotation is carried out according to a second angle in the same rotation direction as the previous rotation, continuing running for a second time according to the predetermined mode, the first angle being different from the second angle. The present disclosure is beneficial to improving the traversal ability and traversal efficiency of the robot.

A push rod mechanism includes a lower push rod and an upper push rod relatively stretchable and retractable, and a telescopic control assembly. The lower push rod is provided with a through hole passing through a side wall. The telescopic control assembly includes a limiting member. The limiting member abuts against a side wall of the upper push rod and has a position-limiting state for limiting movement of the upper push rod relative to the lower push rod. The telescopic control assembly includes an operating member capable of pressing against the limiting member, and an operating member for controlling the movement of the operating member. The operating member defines a first position and a second position. In the first position, the operating member keeps the limiting member in the limiting state. In the second position, the operating member allows the limiting member to be released from the position-limiting state.

A push rod mechanism includes a lower push rod and an upper push rod relatively stretchable and retractable, and a telescopic control assembly. The lower push rod is provided with a through hole passing through a side wall. The telescopic control assembly includes a limiting member. The limiting member abuts against a side wall of the upper push rod and has a position-limiting state for limiting movement of the upper push rod relative to the lower push rod. The telescopic control assembly includes an operating member capable of pressing against the limiting member, and an operating member for controlling the movement of the operating member. The operating member defines a first position and a second position. In the first position, the operating member keeps the limiting member in the limiting state. In the second position, the operating member allows the limiting member to be released from the position-limiting state.

An impact sensor system for a header of an agricultural system includes a first sensor vibrationally connected to a deck plate of the header, wherein the first sensor is configured to generate first signals in response to detection of vibrations due to initial contact between a crop and the deck plate of the header. The impact sensor system also includes a second sensor vibrationally connected to the deck plate of the header and positioned forward of the first sensor, wherein the second sensor is configured to generate second signals in response to detection of the vibrations due to the initial contact between the crop and the deck plate of the header.