Abstract: An object of the present invention is to provide a temperature adjustment device for a printing machine with a plurality of inking devices mounted therein, the device being capable of adjusting the temperatures of ink smoothing function rollers in the respective inking devices uniformly and accurately. The temperature adjustment device for a printing machine according to the present invention is a temperature adjustment device for a printing machine that adjusts temperatures of rollers in a plurality of inking devices mounted in a printing machine by supplying temperature-regulated water to shaft parts of the rollers, and is characterized by having a plurality of smoothing function roller temperature regulators, provided respectively corresponding to the inking devices, and each adjusting the temperature of the ink smoothing function roller among a series of rollers in each of the inking devices.

Abstract: A bulldozer is provided with left and right steering brakes that brake the rotations of left and right drive wheels, and a control unit for hydraulically controlling the braking state of the respective left and right steering brakes. The control unit executes protection processing on the left steering brake or the right steering brake when a state of the degree of engagement of the left steering brake or the right steering brake being within a predetermined range and the vehicle speed being equal to or greater than a predetermined vehicle speed continues for a predetermined time.

Abstract: A bulldozer is provided with left and right steering brakes that brake the rotations of left and right drive wheels, and a control unit for hydraulically controlling the braking state of the respective left and right steering brakes. The control unit executes protection processing on the left steering brake or the right steering brake when a state of the degree of engagement of the left steering brake or the right steering brake being within a predetermined range and the vehicle speed being equal to or greater than a predetermined vehicle speed continues for a predetermined time.

Abstract: A construction machine includes a negative parking brake whose braking state is released by a supply of hydraulic fluid. It also includes a parking brake hydraulic circuit that is branched from a hydraulic fluid supplying circuit, which supplies the hydraulic fluid to a transmission of the construction machine, and supplies the hydraulic fluid to the parking brake. The parking brake hydraulic circuit includes a check valve that prevents backflow of the hydraulic fluid of the parking brake to the hydraulic fluid supplying circuit, and it includes an operation switching valve, which is provided closer to the parking brake than the check valve, for switching between an activation and a release of the parking brake. The parking brake hydraulic circuit also includes a relief valve, which is interposed between the check valve and the operation switching valve and which discharges the hydraulic fluid of the parking brake when the relief valve is opened.

Abstract: A construction machine includes a negative parking brake whose braking state is released by a supply of hydraulic fluid. It also includes a parking brake hydraulic circuit that is branched from a hydraulic fluid supplying circuit, which supplies the hydraulic fluid to a transmission of the construction machine, and supplies the hydraulic fluid to the parking brake. The parking brake hydraulic circuit includes a check valve that prevents backflow of the hydraulic fluid of the parking brake to the hydraulic fluid supplying circuit, and it includes an operation switching valve, which is provided closer to the parking brake than the check valve, for switching between an activation and a release of the parking brake. The parking brake hydraulic circuit also includes a relief valve, which is interposed between the check valve and the operation switching valve and which discharges the hydraulic fluid of the parking brake when the relief valve is opened.

Abstract: A hydro-mechanical transmission (2) with a simple construction and which can make full use of its advantages is provided. In a hydro-mechanical transmission in which a hydraulic power transmitting mechanism (10), having a hydraulic pump and a hydraulic motor, and a mechanical power transmitting mechanism (20), using gears, are switchably provided; the speed of input rotation is changed, and the resultant rotation is generated; the mechanical power transmitting mechanism has at least one planetary gear mechanism, and an output shaft (24) of the mechanical power transmitting mechanism is provided so that its output can be generated directly to the outside. The hydraulic pump (11) and the hydraulic motor (12) of the hydraulic power transmitting mechanism are of a variable displacement type. A directly-coupled clutch (30) is interposed between a motor output shaft (14) of the hydraulic power transmitting mechanism and the output shaft of the mechanical power transmitting mechanism.