Abstract: Provided are a livestock sensor device, a livestock astasia inference method, a livestock astasia inference program, and a livestock management system that are capable of preventing damage to stockbreeders. According to an embodiment of the present technology, there is provided a livestock sensor device including a postural-state determination unit, a state inference unit, a transmission unit, and a casing. The postural-state determination unit determines in which of a prostrate state and a non-prostrate state a livestock animal has been on a basis of output values from an acceleration sensor. The state inference unit infers whether or not the livestock animal has developed astasia on a basis of a duration of the prostrate state. The transmission unit transmits, to a server, an astasia-notification data item indicating that an inference that the livestock animal has developed the astasia is made when the inference that the livestock animal has developed the astasia is made.

Abstract: A pick-up style utility vehicle with an expandable cargo bed, including a stationary cargo bed part serving as a bottom face and a side face of the cargo bed, a movable cargo bed part serving as the bottom face and the side face of the expanded cargo bed, and a cargo bed support mechanism for supporting the movable cargo bed part at a normal position and an expansion position set on the rear side of the normal position.

Abstract: The present invention is a pick-up style utility vehicle with an expandable cargo bed, including a stationary cargo bed part serving as a bottom face and a side face of the cargo bed, a movable cargo bed part serving as the bottom face and the side face of the expanded cargo bed, and a cargo bed support mechanism for supporting the movable cargo bed part at a normal position and an expansion position set on the rear side of the normal position.

Abstract: An exhaust device for adjusting an exhaust gas cross sectional area of an exhaust passage in a combustion engine includes a valve body arranged in the exhaust passage communicating to an exhaust port of the combustion engine; a valve shaft fixed or integrally formed to the valve body and arranged so as to transverse the exhaust passage, the valve shaft changing the opening of the valve body by turning with the valve body about an axis of the valve shaft; a pair of bearing members for supporting rotatably the valve shaft at both ends thereof in a axial direction of the valve shaft; and a stopper arranged on the valve shaft so as to face an end face on the inward side of the exhaust passage of each bearing member in the axial direction. The stopper is restricted in the axial direction by the end face of each of the bearing members so that the valve body and the valve shaft do not move in the axial direction.

Abstract: The present invention relates to an exhaust device for adjusting an exhaust gas cross sectional area of an exhaust passage in a combustion engine. The exhaust device includes a valve body arranged in the exhaust passage communicating to an exhaust port of the combustion engine; a valve shaft fixed or integrally formed to the valve body and arranged so as to transverse the exhaust passage, the valve shaft changing the opening of the valve body by turning with the valve body about an axis of the valve shaft; a pair of bearing members for supporting rotatably the valve shaft at both ends thereof in a axial direction of the valve shaft; and a stopper arranged on the valve shaft so as to face an end face on the inward side of the exhaust passage of each bearing member in the axial direction. The stopper is restricted in the axial direction by the end face of each of the bearing members so that the valve body and the valve shaft do not move in the axial direction.