13results about "Aerodynamic brakes" patented technology

This invention relates to an air backup braking system and a locomotive. The system includes: a backup switching valve with two positions: normal and air position; a backup pressure regulating valve; a pressure measuring point; a backup brake valve with three positions: braking, neutral, and release; a backup equalizing pressure cylinder; and a backup relay valve, used to output its A2 port pressure in real time according to the pressure of the equalizing cylinder when the air backup mode is activated. Specifically, in the normal position of the backup switching valve, ports A2 and A3 of the backup switching valve are connected, cutting off the main air supply to the backup brake valve, venting the pressure at the control port C1 of the first, second, and third switching valves, and outputting a high-level signal. In the air position of the backup switching valve, ports A1 and A2 are connected, and the main air supply is simultaneously output through the pressure at port A2 to the control port C1 of the first, second, and third switching valves, and outputting a low-level signal. This invention solves the technical problem of the inability to switch in real time after a locomotive electro-pneumatic brake failure.

This application discloses a release structure and device for train parking brakes, applicable to the field of rail transit technology. During normal train operation, the parking brake isolation valve is open, and the parking brake caliper unit is in a brake release state. When the parking brake isolation valve closes, the gas in the brake cylinder of the parking brake caliper unit is discharged into the atmosphere through the parking brake isolation valve, at which point the parking brake caliper unit is in a braking application state. When the parking brake isolation valve closes, the energization state of the solenoid valve changes to open its own pipe, at which point the solenoid valve opens, and the first bidirectional valve charges the brake cylinder of the parking brake caliper unit through the first air inlet, thus releasing the braking application state of the parking brake caliper unit. With the release structure proposed in this application, after the parking brake caliper unit automatically applies parking brake due to isolation, it is no longer necessary for the driver and passengers to get off the train for manual release, improving operational convenience.

This application provides a method, device, and storage medium for assessing the condition of a train emergency braking system. The method involves acquiring the BDP curve of the emergency braking process during daily train operation; determining the acquisition segment within the BDP curve; dividing the emergency braking process into stages based on the acquisition segment; extracting features from each stage; determining the score and weight of each feature; and assessing the condition of the train emergency braking system based on the product of all feature scores and weights. This application assesses the condition of the train emergency braking system solely based on the BCP process value of the emergency braking process during daily train operation, without requiring knowledge of the internal structure and implementation principles of the braking system. The assessment process is simple, the results are accurate and reliable, and it possesses flexibility and adaptability. It can provide personalized, component-level, detailed condition assessments for the braking systems of different trains, meeting the needs of modern rail transit systems for braking system condition monitoring and maintenance management.

The invention relates to a brake cylinder comprising a service brake piston which is axially movable in a housing, which has a threaded spindle extension as part of an axially movable spindle, said brake cylinder having a locking device for locking the brake force, which locking device comprises at least two coupled coupling mechanisms, the service brake piston (1) being connected by a threaded connection to a first coupling element of the coupling mechanisms which is rotatably supported, which first coupling element can be connected to a second coupling element of the coupling mechanisms which is rotatably supported by a first coupling of the two couplings, which second coupling element which is rotatably supported can be connected to a third coupling element by a second coupling of the two couplings, and the second and third coupling elements are configured in such a way that a linear movement of at least one of the two coupling elements relative to the other coupling element results in a connection of the two coupling elements in the case of a second coupling.

This application provides a parking brake control system and a vehicle. The parking brake control system includes a main air inlet, a pair of parking brake cylinders, a pair of service brake cylinders, and a pair of braking mechanisms. Each braking mechanism includes a parking shut-off valve and a parking solenoid valve. The air inlet of the parking solenoid valve is connected to the main air inlet, the air outlet of the parking solenoid valve is connected to the air inlet of the parking shut-off valve, and the exhaust port of the parking solenoid valve is connected to the parking brake cylinder. The parking brake control system and vehicle provided in this embodiment can ensure that the parking brake cylinders can respond accurately, thereby significantly improving the safety and reliability of vehicle operation. At the same time, it realizes precise parking brake control based on a single bogie, so that the vehicle only loses the braking force of one bogie while ensuring the overall braking performance.

The utility model belongs to rail transit technical field, concretely relates to a kind of air source device, braking system and rail transit car.The air source device includes: air compressor;Air dryer, with the air compressor intercommunication;Air cylinder subassembly, with the air dryer intercommunication;First pressure switch, with the air cylinder subassembly intercommunication;Second pressure switch, with the air cylinder subassembly intercommunication;Wherein, when the pressure of the air cylinder subassembly is less than or equal to first threshold value, the first pressure switch triggers stop signal, when the pressure of the air cylinder subassembly is greater than or equal to second threshold value, the second pressure switch triggers alarm signal.The air source device, braking system and rail transit car of the utility model can guarantee the safety of rail transit car.

The application relates to a brake failure mitigation system and method, which comprises a brake failure mitigation device and a brake control unit, wherein the brake failure mitigation device comprises a bistable electromagnetic valve, a diode, a time delay device, a first relay and a second relay; the control end of the first relay is connected with the control end of the brake control unit; the output end of the first relay is connected with the set control end; the control end of the second relay is connected with the control end of the brake control unit; and the first input end of the second relay is connected with the reset control end. The implementation of the application ensures fault-oriented safety; on the air path connection, the device can directly cut off the air source and connect the brake pipeline with the atmosphere, so that forced mitigation is realized when the brake control unit fails, and wheel brake scuffing is effectively prevented.

The train automatic driving brake control system of the present application comprises: a separate brake valve, a distribution valve, an acting valve, a total air cylinder pipe, a separate relief pipe, a separate acting pipe, a brake cylinder pipe, an acting air cylinder pipe and an automatic driving control host; further comprising: a first electric air valve for connecting or cutting off the gas passage between the total air cylinder pipe and the separate acting pipe; when the separate brake of the locomotive is required under the automatic driving condition, the automatic driving control host sends a control signal, controls the pressure increase of the separate acting pipe by controlling the power-on time of the first electric air valve and adjusting the exhaust rate of the throttle valve, thereby generating different brake forces. The present application has the beneficial effects that: the brake control system is suitable for the brake controller which directly controls the air path by using air valves, and can realize the separate brake of the locomotive, the relief after the separate brake of the locomotive, the separate relief of the locomotive after the whole train brake, the stage brake of the locomotive, the stage relief, and generate different brake forces when the separate brake of the locomotive.

This invention relates to the field of valve technology, specifically to a valve integrated module for pipeline pressure switching. The module includes a pressure switching mechanism connected to two integrated valve mechanisms via a bright tube. The pressure switching mechanism is located at the outlet of the main air reservoir next to the driver's cab on the locomotive. It is used to switch to a 600 kPa pressure level when the main pressure reducing component of the integrated valve mechanism fails. The integrated valve mechanism is fixedly installed under the locomotive to meet the dynamic switching requirements between 900 kPa and 600 kPa pressure levels during operation. In the event of a main pressure reducing component failure, it can switch to the secondary pressure reducing component, entering a 600 kPa redundant pipeline. This not only achieves zero-downtime maintenance but also avoids the risk of passenger car pneumatic equipment failure due to main valve failure in traditional systems. Real-time monitoring of the passage pressure via a pressure gauge ensures stable pressure after switching, further reducing safety hazards.

The utility model discloses a kind of track vehicle parking brake remote relief control systems, belong to rail transit vehicle braking technical field;The utility model is provided with two parking brake cylinders, respectively set on vehicle and under vehicle are used to independently relieve the rotating handle of the parking brake cylinder;And for force amplification integrated box, it is connected with two the parking brake cylinder and two the rotating handle respectively through push-pull cable;Still include with the chassis fixed connection and support the integrated box and the chassis of vehicle form the operating space of transition bracket, the transition bracket is away from the chassis side with the integrated box can be detachably fixed connection, the utility model has layout, application flexible and reasonable, on vehicle or under vehicle can relieve the parking brake of one bogie once, labor-saving and convenient beneficial effect when operating, maintaining.

This utility model belongs to the field of locomotive manufacturing technology and discloses a cylinder structure and a locomotive. It includes a cylinder body, a clamping belt attached to the cylinder body, and a fixing frame mounted on the upper side of the cylinder body. The fixing frame is a rigid structure, and the fixing frame and the clamping belt are respectively connected to the chassis. This solves the problem in the prior art where damage or breakage of the clamping belt on the cylinder would delay the locomotive's operating efficiency.

The application discloses a kind of rack rail car with brake car for matching, including car body frame, the bottom of the car body frame both sides is provided with walking frame assembly, the car body frame is installed with guide wheel assembly and walking wheel assembly by walking frame assembly, the bottom of the car body frame is installed with brake device, the brake device is connected with speed limiting assembly by hydraulic system, the bottom of the car body frame is provided with rail, the guide wheel assembly, brake device, walking wheel assembly are connected with rail cooperation.This application relates to the technical field of mine machinery, solves the problem that the brake trolley for matching rack rail car in the prior art has poor pressure maintaining effect, the user needs to frequently supplement pressure to continue using, and the brake trolley has small braking force, brake shoe and rail contact surface are less, when locomotive overspeed or fault occurs, brake trolley may not brake in time and other phenomena.

The utility model provides a brake valve body multi-specification interface conversion device, which relates to the technical field of brake valve body interface conversion and comprises a brake valve body, a first valve port and a second valve port are arranged on the left side and the right side of the brake valve body, and a first semi-ring plate and a second semi-ring plate are symmetrically fixed on the surface of the brake valve body. The right side of the first semi-ring plate is movably connected with a rotating disc through a rotating column, the disc face of the rotating disc is sleeved with a conversion connector in a penetrating mode through a connecting groove hole, a butt joint disc is welded to one side of the conversion connector, a flange disc is welded to the other side of the conversion connector, and the side face of the butt joint disc is in sealed press fit with the valve face of the second valve port through a sealing gasket. The surface of the butt joint disc is in fixed threaded connection with the end face of the second valve port through a limiting anti-disengaging column. The utility model solves the problems that the conventional brake valve body generally adopts a fixed interface with a single specification, so that an adapter needs to be detached and replaced when a pipeline is connected, the mounting and connecting efficiency of the brake valve is low, and the use is inconvenient.