Abstract: An emergency stop brake operation assembly necessary for a work vehicle when travelling autonomously in an unmanned state is provided in this brake system without introducing problems to manual driving of the work vehicle by an occupant. This brake system for work vehicles comprises: a brake pedal that is disposed in a driving section; a brake that brakes left and right rear wheels; a linkage mechanism that links the brake pedal and the brake in such a manner as to allow the brake pedal and the brake to operate in conjunction with each other; and an electric brake operating device that actuates the brake in response to an emergency stop command.

Abstract: A work vehicle includes a vehicle body to which work instrument is connected at a back, and a ROPS frame erected at a back portion of a driver seat area in the vehicle body. The work vehicle further includes a positioning unit configured to detect a position of the vehicle body based on a signal sent from a positioning satellite, and a support unit that is fixed to an upper portion of the ROPS frame and supports the positioning unit from below. The positioning unit has a harness connection portion that is connected to a harness for sending information to outside. The harness connection portion is located at a back portion of the positioning unit. The support unit is located protruding backwardly from the harness connection portion of the positioning unit.

Abstract: A work vehicle includes: a vehicle body to which a work machine is connected at a back, a roll-over protection structure frame that, in the vehicle body, is erected in a back part of a drive seat, a positioning unit that, based on a signal sent from a positioning satellite, detects a position of the vehicle body, and a support unit that is fixed to an upper part of the roll-over protection structure frame, and supports the positioning unit from below. The positioning unit has a harness connection part that is connected with a harness for sending information to outside. The harness connection part is positioned in a back part of the positioning unit. The support unit is so positioned as to protrude behind the harness connection part of the positioning unit.

Abstract: The work vehicle includes a vehicle body, a cabin mounted on the vehicle body and having a roof, and a positioning device located above the cabin and configured to detect a position of the vehicle body on the basis of a signal transmitted from a positioning satellite. The roof has a roof front end located in a forefront portion in a front-rear direction; and a roof uppermost end located behind the roof front end and located higher than the roof front end. A position of the positioning device is lower than the roof uppermost end.

Abstract: A work vehicle includes a vehicle body to which work instrument is connected at a back, and a ROPS frame erected at a back portion of a driver seat area in the vehicle body. The work vehicle further includes a positioning unit configured to detect a position of the vehicle body based on a signal sent from a positioning satellite, and a support unit that is fixed to an upper portion of the ROPS frame and supports the positioning unit from below. The positioning unit has a harness connection portion that is connected to a harness for sending information to outside. The harness connection portion is located at a back portion of the positioning unit. The support unit is located protruding backwardly from the harness connection portion of the positioning unit.

Abstract: A work vehicle includes a vehicle body, a positioning unit that detects a position of the vehicle body based on a signal sent from a positioning satellite, a support configuration portion installed on the vehicle body, an installing stay to which the positioning unit is fixed, and a base stay fixed to the support configuration portion. One of the installing stay and the base stay has a protruding piece portion. Another of the installing stay and the base stay has a hole portion into and with which the protruding piece portion is inserted and engaged.

Abstract: An emergency stop brake operation assembly necessary for a work vehicle when travelling autonomously in an unmanned state is provided in this brake system without introducing problems to manual driving of the work vehicle by an occupant. This brake system for work vehicles comprises: a brake pedal that is disposed in a driving section; a brake that brakes left and right rear wheels; a linkage mechanism that links the brake pedal and the brake in such a manner as to allow the brake pedal and the brake to operate in conjunction with each other; and an electric brake operating device that actuates the brake in response to an emergency stop command.

Abstract: Provided is a reference station device that is capable of high-accuracy positioning whilst maintaining stability, even when configured so as to be portable. This reference station device comprises: communications antennas that conduct wireless communications with a mobile station; a positioning antenna that receives a positioning signal from a positioning satellite; and a control unit that controls the operation of the positioning antenna and the communications antennas. The device comprises: a reference station body to which the control unit and the positioning antenna are mounted; a communications antenna support which supports the communications antennas above the reference station body; and a communications antenna mounting part with which the communications antenna support is detachably mounted to the reference station body.

Abstract: The present invention provides a sustained release pheromone formation comprising the sex pheromone substance which is an aldehyde compound wherein the formation can prevent the degradataion of the aldehyde compound and release the compound at an uniformed rate during the control term of the subjective pest insects. The sustained release pheromone formation is obtained by mixing an aliphatic derivative of which number of carbon atoms is equal to or less than that of the sex pheromone substance with a C10-18 aldehyde which is a sex pheromone and then filling the resulting liquid mixture in a plastic container.

Abstract: The present invention provides a sustained release pheromone formation comprising the sex pheromone substance which is an aldehyde compound wherein the formation can prevent the degradation of the aldehyde compound and release the compound at an uniformed rate during the control term of the subjective pest insects. The sustained release pheromone formation is obtained by mixing an aliphatic derivative of which number of carbon atoms is equal to or less than that of the sex pheromone substance with a C10-18 aldehyde which is a sex pheromone and then filling the resulting liquid mixture in a plastic container.