5results about "Railway braking systems" patented technology

The application discloses an emergency brake relief device and method of a motor train unit and the motor train unit. The device comprises a gas circuit device and a circuit device. The gas circuit device comprises an emergency exhaust button located at a head car of the motor train unit, a conversion cutoff plug door, a wind charging module, a wind supply cutoff plug door, a distribution valve module located at each vehicle of the motor train unit, and a train pipe. When the conversion cutoff plug door is conducted, the train pipe supplies wind to the distribution valve module, so that each vehicle enters an indirect air brake mode. The circuit device comprises a safety loop bypass switch and an emergency exhaust switch. The safety loop bypass switch bypasses the safety loop in the case that the safety loop cannot be relieved, so as to relieve the emergency brake of the motor train unit. In the case that the safety loop is bypassed and the wind supply cutoff plug door is conducted, the emergency exhaust button sends an emergency brake instruction to a BP rescue conversion device through the emergency exhaust switch, so that the motor train unit is braked in an emergency mode. The scheme can relieve the emergency brake caused by continuous power failure of the safety loop, and improves the rescue efficiency.

The present disclosure relates to the technical field of vehicle brake control, and provides a parking brake release circuit, a vehicle and a railway vehicle. The parking brake release circuit comprises: at least one motor interface, a first end of the at least one motor interface being used for connecting at least one parking brake motor, the motor interface and the parking brake motor corresponding to each other; a power supply interface, a first end of the power supply interface being used for connecting a vehicle-mounted power supply; a switch, a first end of the switch being connected to a second end of the at least one motor interface, and a second end of the switch being connected to a second end of the power supply interface; the switch being used for turning on or turning off a power supply circuit of the vehicle-mounted power supply to the at least one parking brake motor, wherein the power supply circuit is used for driving the parking brake motor to perform brake release, and turning on or turning off of the switch is controlled by any controller in the vehicle except an electronic parking controller or is manually controlled. In the case of failure of the electronic parking controller, the parking brake is quickly released, and the brake release is quickly performed.

The application discloses a hydraulic power device of a high-speed train landing and taking-off brake system and particularly relates to the field of high-speed trains. The hydraulic power device comprises an oil source sub-system, the oil source sub-system comprises an oil tank, the oil tank is connected with an oil outlet pipeline and an oil return pipeline respectively, the oil outlet pipeline is sequentially provided with an oil source treatment unit and an oil source conveying unit, the oil source conveying unit is connected with a brake sub-system and a landing and taking-off sub-system through a shunt unit, the brake sub-system comprises a first check valve, a first electromagnetic on-off valve, a first pressure reducing valve and a pressure reducing control unit which are sequentially arranged, the landing and taking-off sub-system comprises a second check valve, a third electromagnetic on-off valve, a second pressure reducing valve, a three-position four-way reversing valve and a first safety valve which are sequentially connected, and the three-position four-way reversing valve is connected with the oil return pipeline. Based on the device, landing gear, brake system control and hydraulic system monitoring can be simultaneously realized.

This utility model discloses a linkage stop mechanism, including a base plate, two horizontally parallel rolling linear guides, and an upper base plate. The lower end of the upper base plate is slidably connected to one of the rolling linear guides. A first stop shaft is provided at the upper end of the upper base plate. A ball bearing linear guide is provided between the upper base plate and the first stop shaft. Two second stop shafts and a third stop shaft are slidably connected to the other rolling linear guide. The third stop shaft is elastically connected between the two second stop shafts. The third shaft connecting plate, the first stop shaft, and the second stop shafts are connected by several linkages. This utility model can achieve a good stopping effect and also allows for easy unlocking.

The straddle-type monorail vehicle running wheel mechanism provided by the application is characterized in that the first brake shaft and the second brake shaft are coaxial and rotationally connected, so that the first running wheel and the second running wheel can rotate independently, when the rail vehicle runs on a curve section, the first running wheel or the second running wheel on the outside only rotates and does not slide, effectively reducing the wear of the first running wheel and the second running wheel on the outside, improving the braking efficiency, and when braking is required, the braking assembly simultaneously applies braking force to the first brake shaft and the second brake shaft to brake the first running wheel and the second running wheel synchronously.