567results about "Railway hydrodynamic brakes" patented technology

The invention belongs to the technical field of urban railway vehicle control, and relates to an urban railway vehicle braking force management method distributing braking force based on TCMS. According to the management method, electric braking force is used preferably, air braking serves as the supplementary for insufficient braking force, electric braking is in real-time coordinated matching with air braking, air braking is not used under the situation that the electric braking capability is enough, and the purposes that energy is fed back to a power grid to the maximum degree, and abrasion of a shoe is greatly reduced are achieved. When the electric braking capability is not enough, the air braking is preferably supplemented to a trailer and a motor vehicle with the electric braking fault, and after the maximum adhesion is reached, the purposes that the air braking is averagely supplemented on the motor vehicle with the normal electric braking, the average distribution of braking force for all vehicles is achieved, the interaction force among the vehicles is reduced, and the service life of the vehicles is prolonged are achieved. In the braking process and the starting process, the applying of the braking force is linearly controlled according to the whole vehicle impulsion limiting requirement, the vehicle impulsion is reduced, and conversion among traction force, electric braking and air braking is smooth.

The invention provides a brake control device for railway carriages. The brake control device comprises a brake air cylinder, a brake controller, an electric pneumatic change-over valve, a relay valve, an emergency electromagnetic valve, a load adjustment valve, a brake two-way valve, a distribution valve and a working air cylinder, wherein the brake controller outputs a current signal for to the electric pneumatic change-over valve; the electric pneumatic change-over valve converts the current signal into a pilot control pressure signal and then sends to a first pressure input port of the relay valve; the relay valve performs flow amplification on the pilot control pressure signal and inputs a brake cylinder pipe; two pressure input ports of the brake two-way valve are respectively connected with pressure output ports of the emergency electromagnetic valve and the distribution valve through pipelines; the pressure input port of the brake two-way valve is connected with a second pressure input port of the relay valve through the load adjustment valve; and an adjustment signal input port of the load adjustment valve is communicated with two air springs. According to the brake control device, a microcomputer controlled direct electric pneumatic brake system and an air automatic brake system are integrated. Under normal conditions, the direct system is used; and the automatic system is taken as a safe brake method to satisfy rescue and loopback requirements.

The invention discloses an electro pneumatic hybrid brake control method and system based on a network data transfer mode. The method comprises the following steps: a first setting step, namely setting time delay timing for waiting the subsidence of tractive force so long as a brake command of a train control command is received by a brake control unit; a first monitoring step, namely using the brake control unit to monitor an electrical braking state signal and the time delay timing for waiting the subsidence of tractive force from an electric transmission control unit, and conducting brake control if the electrical braking state signal represents effective tractive force subsidence signal or the time delay timing is stopped, otherwise waiting the stop of the time delay timing. According to the invention, the signals can be input by adding the tractive force subsidence signal or electrical braking, data transmission time delay generated in the initial rising process of brake force in the prior art can be eliminated.

The invention provides a control device of an air braking system of rail vehicles. The control device comprises an air brake, a locomotive distribution valve, an operating valve, at least one automatic brake unit, a first two-way valve, a brake electromagnetic valve and a release electromagnetic valve, wherein the unit comprises an equalizing air cylinder, an overcharge air cylinder, a relay valve and an automatic brake valve; an air inlet of the brake electromagnetic valve is connected with a main air pipe; an air outlet of the brake electromagnetic valve and an air inlet of the release electromagnetic valve are connected with a first air inlet of the first two-way valve; an air outlet of the release electromagnetic valve is communicated with the atmosphere; a second air inlet of the first two-way valve is connected with the operating valve through a twelfth pipe; an air outlet of the first two-way valve is connected with a brake cylinder; and the control ends of the brake electromagnetic valve and the release electromagnetic valve are connected with a switch through leads. The switch is mounted at the required position, controls the two electromagnetic valves to inflate and exhaust the brake cylinder and controls the locomotive to brake and release. The control device is reliable in action, simple in connection, easy to manufacture and maintain and low in cost.

The invention discloses an integrated multifunctional parking braking system and a control method thereof. A first bi-directional valve, a dust filtration check valve, a pressure reducing valve, a parking braking electromagnetic valve, a second bi-directional valve, an electric interlocking cock and an outlet in the system are connected in sequence. The first bi-directional valve is connected with a first air source and a second air source. A parking braking air cylinder is arranged between the dust filtration check valve and the pressure reducing valve. The second bi-directional valve is connected with a comparison outlet. A first pressure switch and a second pressure switch are arranged between the electric interlocking cock and the outlet. The integrated multifunctional parking braking system and the control method thereof have the advantages that the original parking braking function is reserved, meanwhile, the function of the double air sources from a total air pipe and a train pipe (or other external air sources) is achieved, and it can be guaranteed that parking braking can be automatically implemented when total air does not exist; meanwhile, the functions of parking braking status display, mechanical display or digital display, manual release and the like can be achieved; an air board integration mode is adopted, the size is small, the integration degree is high, and rapid installation or maintenance is facilitated.

A compressed air control and distribution device for return and rescue of motor train units is characterized by comprising a hoisting frame, a BP rescue conversion device, two air storage cylinders, a valve plate and a hanging plate, wherein a hoisting hole for hoisting the whole device is formed in the hoisting frame, a plurality of installing holes are formed in the hoisting plate according to the positions of the valve plate, air storage cylinder installing hoisting belts and the hoisting plate to facilitate fastening and installation conducted on the valve plate, the air storage cylinders and the hanging plate through bolts, the BP rescue conversion device is installed on the hoisting frame and used for achieving the function of converting electric signals and air way signals during return and rescue. A complicated return and rescue control device is integrated through integrated design concept under the condition that a vehicle body chassis zone space is limited, mutual return and rescue of different types of motor train units are achieved functionally, and convenience is brought to running organization. In addition, the compressed air control and distribution device is simple to install and fix and convenient to maintain and test, and occupied space is greatly decreased.

The invention discloses a brake cylinder pressure control system. The brake cylinder pressure control system comprises an air distribution valve control device, a distribution valve provided with a connecting train pipe and a main air pressure regulating valve connected with a main air pipe as well as a locomotive individual control device and a bidirectional valve, wherein the main air pressure regulating valve is connected with a brake cylinder precontrol air cylinder by virtue of the distribution valve, the brake cylinder precontrol air cylinder is connected with a first application valve which can amplify a brake cylinder precontrol pressure valve signal; a distribution valve cut-off device used for isolating the distribution valve is arranged between the main air pressure regulating valve and the distribution valve, and the distribution valve is also connected with a working air cylinder; the locomotive individual control device outputs a brake cylinder precontrol pressure value by virtue of a second application valve with signal amplification effect; the first application valve and the second application valve are respectively connected with the main air pipe. The brake cylinder pressure control system provided by the invention has the advantages that two control ways, namely an air distribution valve and individual brake control, are mutually independent and do not influence each other, and safety and reliability of brake cylinder control are improved. The invention also disclosed a kind of brake cylinder pressure control way and a kind of locomotive.

The invention discloses a control method for front intercept and rear intercept of a train pipe of an electric locomotive. According to the control method, a relay valve 1, a front intercepter valve 2, a rear intercepter valve 3, a first intercept solenoid valve 4 and a second intercept solenoid valve 5 are included. The control method can accurately and reliably control the air charging and discharging operations of the train pipe of the locomotive. When braking is carried out or pressure is kept after braking, the front intercepter valve cuts off an air charging channel of a master wind direction train pipe; when air charging is released, the air charging channel of the master wind direction train pipe is communicated. When the rear intercepter valve is located on a reconnexion pusher locomotive, a channel of the relay valve and the train pipe is cut off, and the non-synchronous brake relieving states of the locomotive caused by unnecessary air discharging of the train pipe can be avoided. When in other working states, the channel between the relay valve and the train pipe is communicated. The embodiment of the invention further provides a brake system through which the control method can be achieved, and the electric locomotive adopting the brake system.

A high speed train rescue conversion device comprises an electronic control unit, an electric pneumatic conversion valve, a relay valve, a discharge valve and an emergency electromagnetic valve. The electronic control unit collects train pipe pressure and outputs current signals used for braking, and the electric pneumatic conversion valve converts the received current signals into corresponding precontrol pressure signals and transmits the precontrol pressure signals to a braking pressure input port of the relay valve. Flow amplification of the precontrol pressure signals is carried out by the relay valve, and then the precontrol pressure signals are respectively input into an upper cavity and a lower cavity of the discharge valve. The lower cavity of the discharge valve is connected with a train pipe after blocked and cocked, and the upper cavity of the discharge valve is connected with the emergency electromagnetic valve. A supply pressure input port of the electric pneumatic conversion valve and a supply pressure input port of the relay valve are respectively connected with a pressure supply output port of a main air reservoir (MR). Air valves and the electronic control unit are combined into a whole, synchronization pressure reduction braking of a train with the high speed train rescue conversion device and other trains is achieved, and purposes that device integration and braking sensitivity are promoted, horizontal impulses of the train are reduced, bogie equipment is protected, and braking effect of the train is promoted are achieved.

The invention provides a track vehicle steering frame which comprises a framework and a secondary suspension device. The framework comprises two side beams, two horizontal beams and four braking hanging beams. The two side beams are arranged in parallel at intervals. The two horizontal beams are arranged between the two side beams in parallel at intervals. The side beams are perpendicular to the horizontal beams. Two braking hanging beams are arranged on each horizontal beam in parallel at intervals. The braking hanging beams and the side beams are parallel. A mounting base is arranged at a middle groove of each side beam. The secondary suspension device comprises a plurality of steel springs which are symmetrically arranged on the mounting bases at the middle grooves of the two side beams respectively. The track vehicle steering frame solves the problem that in the prior art, a suspension device of a track vehicle steering frame is formed by an air spring and corresponding components, so that structure is complex, and cost is high.

The invention discloses an air braking force supplement method for an urban rail vehicle. The air braking force supplement method comprises the following steps that a rail vehicle control unit calculates the total braking force F<T> required by the whole urban rail vehicle, the F<T>=m*a*b<d>, electric braking force is applied to a traction control unit through the F<T>, wherein a is the grade of the urban rail vehicle, and m is a loading parameter, and b<d> is an amplification coefficient of network delay when the situation that the traction control unit plays the electric braking force is considered; a braking control unit calculates the air braking force F needing to be supplemented, wherein F=F-F<D>*b, F is total braking force which is calculated by the braking control unit and required by the whole urban rail vehicle, F<D> is electric braking force actually played by the traction control unit of the urban rail vehicle, and b is an amplification coefficient. According to the air braking force supplement method for the urban rail vehicle, the effect that the electric braking force of the urban rail vehicle during service braking is sufficiently played can be ensured, abnormal supplement during air braking is reduced, accordingly, the service of a brake block / brake pad of the urban rail vehicle is prolonged, and the maintenance cost of the whole urban rail vehicle is reduced.

The invention relates to an automobile parking braking and gear combination control system. The automobile parking braking and gear combination control system comprises an oil tank, a filter, a hydraulic pump, a parking brake valve, a parking hydraulic cylinder, a parking brake, a hydraulic-control air valve, an air pocket, a gear selecting reversing valve, a gear shifting reversing valve, a gear selecting air cylinder and a gear shifting air cylinder. According to the automobile parking braking and gear combination control system, parking braking and gear shifting combined control is achieved, so that gear selecting and shifting of an automobile in the parking braking state can not be carried out, the automobile can not move and the problem that a friction sheet of the parking brake is prone to abrasion when the automobile moves with gears engaged in the parking braking state is solved.

The invention discloses a railway wagon brake cylinder which comprises a cylinder body, a piston assembly and a piston rod. The piston assembly and the piston rod are arranged in the cylinder body. A drive lubrication mechanism used for enabling the piston assembly to rotate in the process of brake release is arranged in the cylinder body. The drive lubrication mechanism comprises a plurality of leaf springs arranged at the bottom of the piston assembly, a gear ring base arranged at the bottom in the cylinder body, a spring seat arranged at the front end in the cylinder body and a release spring sleeved on the piston rod. The leaf springs are matched with the gear ring base to form a ratchet wheel structure. One end of the release spring abuts against the inner side end face of the piston assembly, the other end of the release spring abuts against the end face of the spring seat, and the release spring is in a compressed state continuously. When brake release is conducted on the piston assembly, the piston assembly can rotate under the action of the drive lubrication mechanism, so that grease naturally flowing to the lower portion of the brake cylinder is guided to the upper portion of the brake cylinder through the rotation of the piston, the grease of the brake cylinder circulates in the brake cylinder, and the function of driving lubrication is achieved.

The invention relates to the field of train control, in particular to an air control valve and an air control valve assembly. The air control valve comprises a main piston valve, an auxiliary air cylinder inflation valve, an accelerated relieving air cylinder inflation valve, a partial relieving control valve and a brake valve, wherein the initial states of the auxiliary air cylinder inflation valve, the accelerated relieving air cylinder inflation valve, the partial decreasing control valve and the brake valve are all closed states; the main piston valve comprises a valve core assembly and a main valve spring; the valve core assembly comprises a main piston rod and a main piston; the main piston is installed in the middle of the main piston rod, and the lower portion of the main piston rod is sleeved with the main valve spring; a center cavity for accommodating the valve core assembly is divided into a driving chamber and a main valve spring chamber by the main piston; the driving chamber communicates with a train pipe, the main valve spring is arranged in the main valve spring chamber, and the main valve spring chamber communicates with an auxiliary air cylinder; the valve core assembly slides up and down in the center cavity under the air pressure of the driving chamber, the air pressure of the main valve spring chamber and the action of the main valve spring, the effects such as partial decreasing, braking, relieving and pressure maintaining are achieved, the pressure of a brake cylinder and the pressure of all air cylinders are controlled to be changed correspondingly; and finally, the air control valve and the air control valve assembly meet the application requirements of railway freight trains under different working conditions.

A brake rigging comprising first and second brake beams. A brake shoe assembly including a brake shoe adjacent each end of brake beams. A first force transfer mechanism connected intermediate first and second ends thereof to the first brake beam for moving a brake shoe into engagement with confronting wheels during braking. A second force transfer mechanism connected intermediate first and second ends thereof for moving brake shoes into engagement with confronting wheels during braking. A first force transmitting device engageable with such second brake beam for rotating such second force transfer mechanism. An adjustable length second force transmitting device having one end connected to the first force transfer mechanism and another end connected to the second force transfer mechanism and an apparatus engageable with such second force transmitting device and a portion of such brake rigging for changing a length of the second force transmitting device.

The invention discloses a train anti-skid control method based on an optimal slip rate and a control device thereof. The method comprises the following steps: firstly, according to a braking cylinderpressure, calculating a locomotive braking force; secondly, according to a non-linear relationship between an adhesion coefficient and a slip rate, calculating the optimal slip rate through an extremevalue search algorithm; and according to a difference value of an actual slip rate and the optimal slip rate, through running a PID control algorithm, solving to obtain a braking force moment by an anti-skid valve control panel; based on the braking force moment, controlling an anti-skid valve switch to exhaust air or re-charge air to the braking cylinder, adjusting the pressure of the braking cylinder until the braking force moment is solved. The anti-skid control method is capable of realizing the optimal slip rate as a control objective, through adjusting parameters of a controller, enabling a wheel slip rate to be near the optimal slip rate, and guaranteeing that a train has the good anti-skid control effect while driven in different rail environments.

The invention discloses a train pipe low-pressure protection system and method applicable to a locomotive braking system, belonging to the field of locomotive braking systems, and aiming at solving the problems that precontrol pressure fluctuation is large, total wind consumption is high and energy is wasted when the traditional pressure limiting method is adopted and braking force of the locomotive is easy to attenuate. The train pipe low-voltage protection system disclosed by the invention comprises a pressure regulating valve, a two-position three-way pneumatic valve, an or gate shuttle valve, a fireless feedback safety valve, an operating valve and a volume chamber, wherein pressure of the volume chamber is only related to commonly pressure reduction of a train pipe, a channel used for controlling the operating valve is added by virtue of the pressure regulating valve, the two-position three-way pneumatic valve and the or gate shuttle valve, low pressure protection on the train pipe is realized by virtue of the added control channel, and control function of the braking system is improved. By adopting the train pipe low-pressure protection system and method disclosed by the invention, low pressure protection on the train pipe is realized, the problem that leakage is caused in a DK-1 braking system such as a distributing valve, a safety valve and the like is solved, and life cycle operating cost of a locomotive is saved.

The invention relates to a microcontroller control electro-pneumatic brake unit for locomotive brake systems and aims to achieve conversion of electrical signals of a locomotive brake system and an air brake pressure signal. The microcontroller control electro-pneumatic brake unit comprises an air circuit portion and an electrical portion; the air circuit portion mainly comprises an intake electromagnetic valve, an exhaust electromagnetic valve and a pressure sensor. The electrical portion mainly comprises a life signal module, an RS232 communication module, an analog input module, a CAN (controlled area network) communication module, a BI (batch input) module, a master control CPU (central processing unit) module, a monitoring CPU module, a high-speed electromagnetic valve drive module, an analog acquiring module and a power processing module powering the modules above. The electro-pneumatic brake units in a brake control system can automatically control train tubes, distributor valves and independent brake pressures, separately, automatically in response to control commands of the electro-pneumatic brake units, the stability of the brake control system is improved, and fault rate is decreased.

The invention discloses an electromagnetic evacuated ultraspeed railway system. The electromagnetic evacuated ultraspeed railway system comprises a housing and at least one transporting line which isarranged in the housing; the transporting line comprises an evacuated transportation tube and a train which is positioned in the evacuated transportation tube; and active collision avoidance devices are arranged between compartments of the train and the train head and the compartments. An external electromagnetic propulsion layer is arranged on the internal wall of the evacuated transportation tube; an internal electromagnetic propulsion layer is arranged on the external wall of the train; when the train penetrates through the evacuated transportation tube, homopolar magnetism pushes the trainto advance; and meanwhile, a power generation closed lead configured for the train cuts a magnetic induction line of the external electromagnetic propulsion layer to generate electric energy needed by running. The electromagnetic evacuated ultra-speed railway system is a people and object carrying integrated transportation system with a certain power generation capacity; and according to the electromagnetic evacuated ultra-speed railway system, requirements on external power supply are extremely low; under a mutual effect of an electromagnetic tube and an evacuated environment, the train running speed is highest, the energy consumption is lowest, no fear of influence from any weather is realized, the cost is lowest, and the input-output ratio is highest.

The invention discloses a control system for a distribution valve of a brake system of a storage battery power engineering truck, belonging to the control field of the brake system in the storage battery power engineering truck. The control system comprises an electronic distribution valve closed loop control system, a reserve air distribution valve control system and a hard braking fast pressurizing control system, wherein the electronic distribution valve closed loop control system is started under the normal condition; the reserve air distribution valve control system is started when the electronic distribution valve closed loop control system fails; and the hard braking fast pressurizing control system is used under the emergent condition. In the invention, closed loop control is carried out on the braking cylinder of the storage battery power engineering truck through controlling the pressure of a wind cylinder in advance, so that the control precision of the braking cylinder pressure can be greatly improved; the reliability of the brake system can be improved through using a reserve air distribution valve; and an emergent braking fast pressurizing passageway can ensure that the emergent braking action can be generated in a short time under an emergent circumstance, thus the safety of the storage battery power engineering truck can be guaranteed.

A wind resistance braking device comprises a wind resistance braking board and a driving mechanism; the driving mechanism comprises a driving rod; the driving rod is hinged onto the wind resistance braking board; and one end of the wind resistance braking board is hinged on a fixed seat and is driven by the driving rod to rotate around the fixed seat. The wind resistance braking board can be rotated around the fixed seat for a corresponding angle, and when airflow flows towards the wind resistance braking board, the wind resistance braking board can generate certain air resistance which directly pushes the wind resistance braking board to rotate through the driving rod, so that the required driving force is small, the efficiency is improved, and energy is saved; two wind resistance braking boards are symmetrically mounted on side wall plates on the two sides of a motor car body, so that a motor car keeps a good balance; rain water, dust and other impurities can not fall in the wind resistance braking device to influence the wind resistance braking device, so that the service life of the wind resistance braking device is prolonged; and the mounting areas of the two sides of the motor car body are large, so that the wind resistance braking device can be mounted and used conveniently.

The invention aims to provide a brake control unit applicable to a motor train unit with the speed grade of 250 kilometers and below. The brake control unit comprises a PBCU (pneumatic brake control unit) and an EBCU (electronic brake control unit) which are integrated in the same brake control cabinet. The PBCU mainly comprises a filling solenoid valve, an exhaust solenoid valve, an emergency valve, an empty and load valve, a relay valve and a pressure reducing valve, the relay valve is a double-precontrol relay valve, namely, a common brake precontrol pressure port and an emergency brake precontrol pressure port include two independent passages, redundancy of a system is increased, a brake cylinder pressure output passage is provided with a forced release device and a remote release valve, a switch for controlling the remote release valve is arranged on a train, and the pressure of a brake cylinder can be remotely released by operating the switch. System operating complexity is reduced, and maintainability of the system is improved.

The invention relates to a wagon brake system, which comprises a brake control system and a base control system. The base control system comprises that each car axle is provided with at least one disc brake device; the disc brake device comprises a brake disc (11) rotating with the car axle, a lever system (12), a brake pad (13), and a unit brake cylinder (14); certain gap is formed between the brake pad and the brake disc; the lever system is acted on the brake pad; the brake control system comprises an antiskid unit (9) communicated with the unit brake cylinder; compressed air entering the unit brake cylinder through the antiskid unit is converted into an acting force and output by the unit brake cylinder, and is amplified to the brake pad through the lever system; a positive pressure acted on the brake disc is formed by the brake pad; when wheel set sliding is detected to generate by the antiskid unit, an access from the brake control system to the unit brake cylinder is closed; and an access from the unit brake cylinder to atmosphere is opened; therefore, a brake force is eased so as to lead the car axle to resume to normal speed reduction rapidly. The wagon brake system can be adopted to improve the brake power, and is suitable for improving the speed of a wagon.

The invention discloses a wireless idle brake control system and control method for a railway wagon. The control system comprises a locomotive brake control system and a vehicle brake control system; the locomotive brake control system comprises an operator, a display screen and a control module; the vehicle brake control system comprises an electric control device and an execution module; the control module is communicated with an electric control device of each vehicle by a wireless ad hoc network; the control module and the electric control module of each vehicle are nodes of the wireless ad hoc network. By using the wireless ad hoc network technology, in the operation of a railway wagon train, a brake release signal becomes a wireless network signal and is transmitted to the rear vehicles, and the transmission speed is improved, so the rear vehicles act at the time as consistent as possible, the longitudinal force in the brake process of the train is reduced, the impact among the vehicles is reduced, a bus cable does not need to be arranged on the train due to the wireless signal transmission mode, the operation that stations are arranged along the railway line as relay points is not needed, and the influence on the environment of the railway line is smaller.

The invention discloses a controlling device capable of automatically cutting off a train pipe and exhausting in case of an undervoltage main blast line and a control method. The controlling device comprises a pneumatic valve, wherein the left and right sides of the pneumatic valve are provided with valve ports, the valve port at the left side of the pneumatic valve is connected with a train pipeoutlet of a locomotive equalizing reservoir relay valve, the valve port at the right side of the pneumatic valve is connected with a train pipe inlet of a locomotive distributing valve, an exhaust outlet is arranged at one side of the pneumatic valve, the bottom of the pneumatic valve is provided with an actuating valve port, a magnetic valve is arranged below the pneumatic valve, an air inlet and an air outlet are arranged on the magnetic valve, the air inlet at the top of the magnetic valve is connected with a locomotive main blast line, the air outlet is connected with the actuating valve port, and an exhaust port is also arranged on the magnetic valve. The connection, isolation and automatic exhaust of the train pipe can be controlled by the switch-on and switch-off of an electronic control valve; and the train pipe cutoff and automatic exhaust can be realized on an air path in case of the undervoltage main blast line communicated with the pneumatic valve.

The invention discloses a train brake system. The train brake system comprises traction brake controllers, traction control units, brake control units and brake devices, wherein the traction control units are arranged in multiple unit trains and the brake control unit and the brake device are arranged in each multiple unit train; the brake control units are connected with the brake devices throughair passages; network interfaces and hard wire interfaces are formed in the traction brake controllers, the traction control units and the brake control units; the traction brake controllers and thebrake control units are simultaneously connected with hard wires through network buses; the traction control units and the brake control units are simultaneously connected with the hard wires throughthe network buses so that brake information can be simultaneously transmitted through communication networks and hard wires; and when the communication network has a fault, the transmission of the brake information of the multiple unit train with the network fault is controlled to be switched from using the communication network into using the hard wire, and the brake information of the rest normal multiple unit trains is still transmitted by the communication networks. The train brake system has the advantages that stopping or speed limiting is not needed, the reliability of the brake systemcan be improved and the normal operation of the train can be guaranteed.

The invention discloses a high-speed train braking force allocating optimizing controlling method, and relates to a high-speed train braking force allocating optimizing controlling system. The high-speed train braking force allocating optimizing controlling method and the system thereof is used for coordinative controlling for to-be-applied braking force of all sections of a train. The high-speed train braking force allocating optimizing controlling system comprises a braking force allocating optimizing controlling module, the module obtains the adhesion gravity FNi based on a single section train stressing model, and the high-speed train braking force allocating optimizing controlling system further comprises a comparator, a multiplier, a braking force allocating optimizing controlling unit and a braking force re-allocating and an optimizing unit thereof, wherein the comparator and the multiplier are used for obtaining the train adhesion force constraint condition F[mu]; and the high-speed train braking force allocating optimizing controlling method comprises calculation for the adhesion gravity, determination for the train adhesion force constraint condition, braking force optimizing controlling algorithm for electric braking priority and a braking force re-allocating method and optimizing algorithm thereof. According to the high-speed train braking force allocating optimizing controlling method and the system thereof, safe, stable and reliable braking of the train is achieved under various complex rail surface situation condition by following the changing dynamic process during the adhesion status of the train, the problem of braking sliding of the high-speed train is solved effectively, and stability and accuracy of the high-speed train braking controlling system are further improved.

A railway car air brake hose support bracket has an upper portion with first and second attachment members, a lower portion and an air hose connector. The first attachment member enters into and engages a portion of an accessible compartment of an uncoupling mechanism housing below the coupler head, and the second attachment member is secured to an air brake hose support lug of the railway car coupler. The air brake hose connector engages an air brake hose assembly and suspends this hose assembly from the railway coupler at a predetermined distance above the rail bed. A method of installing the hose support bracket includes positioning the first and second attachment members, securing them in place, and attaching one or more railway brake hose units to the air hose connector, either before or after this positioning and securing of the upper portion of the bracket.

A pressure control method for a brake cylinder of a magnetically levitated train comprises the steps that the error between an actual value of the brake cylinder pressure and a final target value of the brake cylinder is worked out and recorded as a target error; the error between the actual value of the brake cylinder pressure and a target value of the impulse limit of the brake cylinder is worked out and recorded as a transient error; a first threshold value and a second threshold value are set; when the target error is larger than the first threshold value, an inflating and deflating electromagnetic valve is opened normally; when the target error is larger than the second threshold value but smaller than the first threshold value, the open time of the inflating and deflating electromagnetic valve during one control cycle is adjusted according to the transient error and recorded as a rough adjusted duty ratio; when the target error is smaller than the second threshold value, the open time of the inflating and deflating electromagnetic valve during one control cycle is adjusted according to the transient error and recorded as a fine adjusted duty ratio; and the rough adjusted duty ratio is larger than the fine adjusted duty ratio. The method is conducted based on the target pressure and the impulse limit target, on the premise that the impulse limit target and the target pressure of the brake cylinder are met, more precise control can be achieved, the brake response time is shortened, the brake distance is decreased, and the steady-state performance of the brake cylinder is improved.