Abstract: A vehicle malfunction prediction system includes: one or more monitoring devices, each monitoring device obtaining from a functional unit in a vehicle in which the monitoring device is mounted, functional-unit information indicating a result of measurement related to the vehicle; and a management device. The monitoring device transmits the obtained functional-unit information to the management device via an external network. The management device creates a learning model based on machine learning on the basis of a plurality of pieces of functional-unit information received from the one or more monitoring devices and transmits the created learning model to the one or more monitoring devices. Each monitoring device predicts a malfunction in the vehicle in which the monitoring device is mounted on the basis of new functional-unit information from the functional unit in the vehicle in which the monitoring device is mounted and based on the learning model from the management device.

Abstract: An agricultural tractor seeks to simplify a shaft support structure in a lower portion side of an elevating hydraulic cylinder which is externally installed to a rear side of a transmission case. The agricultural tractor of the present invention is provided with a travel machine body to which an engine and the transmission case are mounted, a lift arm which is provided in a rear portion side of an upper surface of the transmission case so as to freely oscillate up and down, the elevating hydraulic cylinder which oscillates up and down the lift arm, and rear axle cases which protrude laterally outward from the transmission case. An upper portion side of the elevating hydraulic cylinder is connected to the lift arm, and a lower portion side of the elevating hydraulic cylinder is supported to the travel machine body.

Abstract: An agricultural tractor seeks to simplify a shaft support structure in a lower portion side of an elevating hydraulic cylinder which is externally installed to a rear side of a transmission case. The agricultural tractor of the present invention is provided with a travel machine body to which an engine and the transmission case are mounted, a lift arm which is provided in a rear portion side of an upper surface of the transmission case so as to freely oscillate up and down, the elevating hydraulic cylinder which oscillates up and down the lift arm, and rear axle cases which protrude laterally outward from the transmission case. An upper portion side of the elevating hydraulic cylinder is connected to the lift arm, and a lower portion side of the elevating hydraulic cylinder is supported to the travel machine body.