Abstract: Disclosed are a pressure control method and a pressure control device for a braking cylinder of a rail vehicle, and the rail vehicle. The method includes the following steps: acquiring the air charge-release volume of the braking cylinder of the rail vehicle and the air flowrate of the braking cylinder; determining the charge-release duration according to the air charge-release volume of the braking cylinder and the air flowrate of the braking cylinder, and controlling the charge-release working duration of the air charge-release solenoid valve according to the air charge-release duration; when the working duration of the air charge-release solenoid valve reaches the charge-release duration, acquiring the predictive pressure of the braking cylinder, and controlling the working state of the air charge-release solenoid valve according to the predictive pressure.

Abstract: A computer device includes a delivery management interface. The device receives a delivery operation on the delivery management interface. The device obtains target delivery information via an information management sub-module, The device obtains, according to the target delivery information, at least one piece of management sub-information corresponding to at least one management sub-module. The information management sub-module and the at least one management sub-module are distinct modules of a delivery management domain. The device processes the at least one piece of management sub-information using the at least one management sub-module. The device displays the target delivery information on the delivery management interface according to the processing result. The device also causes a display device to display the target delivery information according to separate modules corresponding to a delivery display domain.

Abstract: A system for controlling centralized brake of vehicles, comprising: a pressure collection device for collecting the pressure of a main blast pipe and a train pipe control device. The pressure signal output end of the pressure collection device is connected to the pressure signal input end of the train pipe control device; the brake signal input end of the train pipe control device is connected to the brake signal output end of a brake controller; the train pipe control device is pneumatically connected to the main blast pipe and a train pipe separately by means of an air channel. By means of the solution, the installation space of a trailer is reduced, and the costs are lowered.

Abstract: The present invention relates to a method of semi-solid indirect squeeze casting for Mg-based composite material, which aims at improving the mechanical property of the cast by adding magnesium zinc yttrium quasicrystal of high hardness, high elastic modulus and excellent matrix binding property acting as the reinforcement into the magnesium alloy matrix and manufacturing the cast through smelting using a vacuum atmosphere smelting furnace, agitating with ultrasonic wave assisted vibration in the rotating impeller jet agitation furnace and indirect squeeze casting against the problem of poor wettability, easy agglomeration, inhomogeneous distribution between the reinforcement particles and the matrix materials and poor properties of the manufactured cast. The manufacturing method of the present invention has advanced technologies and detailed and accurate data.

Abstract: The present invention relates to a method of semi-solid indirect squeeze casting for Mg-based composite material, which aims at improving the mechanical property of the cast by adding magnesium zinc yttrium quasicrystal of high hardness, high elastic modulus and excellent matrix binding property acting as the reinforcement into the magnesium alloy matrix and manufacturing the cast through smelting using a vacuum atmosphere smelting furnace, agitating with ultrasonic wave assisted vibration in the rotating impeller jet agitation furnace and indirect squeeze casting against the problem of poor wettability, easy agglomeration, inhomogeneous distribution between the reinforcement particles and the matrix materials and poor properties of the manufactured cast. The manufacturing method of the present invention has advanced technologies and detailed and accurate data.

Abstract: A system for controlling centralized brake of vehicles, comprising: a pressure collection device for collecting the pressure of a main blast pipe and a train pipe control device. The pressure signal output end of the pressure collection device is connected to the pressure signal input end of the train pipe control device; the brake signal input end of the train pipe control device is connected to the brake signal output end of a brake controller; the train pipe control device is pneumatically connected to the main blast pipe and a train pipe separately by means of an air channel. By means of the solution, the installation space of a trailer is reduced, and the costs are lowered.