290 results about "Air brake" patented technology

The invention relates to the technical field of new energy vehicles, and particularly discloses a control method, system and device for steep slope slow descent of an electric vehicle and a storage medium, and the method comprises the steps that a vehicle control unit calculates the required torque value of the vehicle at the actual vehicle speed based on the current gear, the actual vehicle speed, the slope, the vehicle mass and the state of a power battery; sending a negative torque request to the motor based on the demand torque value; the state of the vehicle is monitored, when it is monitored that the current state of the vehicle meets the preset abrupt slope slow descent function condition, according to the met abrupt slope slow descent function condition, the motor torque and air brake synergistic effect are dynamically adjusted based on the negative torque request, and the cruise switch of the abrupt slope slow descent function is controlled; therefore, the vehicle can run at a constant speed under the downhill road condition. According to the scheme, the abrupt slope slow descent function of the vehicle is controlled, potential safety hazards when the vehicle is driven on a high-speed downhill road section are avoided, and the safety of the whole vehicle is effectively improved.

The invention relates to the technical field of train operation optimization, and discloses an air braking efficiency uncertainty-oriented freight train operation optimization method, which comprises the following steps of: generating a state value function approximate value and a working condition selection set by adopting a constraint-based state value function table learning algorithm according to an initial state and a disturbance sampling value of a freight train; according to the state value function approximate value and the working condition selection set, a state value function table approximate algorithm based on operation time estimation is adopted to generate an operation time approximate value and an operation time estimation value; and according to the operation time approximate value and the operation time estimated value, a freight train operation sequence meeting the air braking constraint, the speed limit constraint and the operation time limit is generated by adopting an operation optimization algorithm meeting the time constraint. According to the method, the freight train operation sequence meeting various constraints can be calculated in a short time, meanwhile, the influence caused by uncertain disturbance is reduced, and the overall optimization effect of the calculation result is improved.

The invention provides a hydrogen fuel electric light truck whole truck structure. The hydrogen fuel electric light truck whole truck structure comprises a cab, a container, a truck frame, a hydraulic tail plate system, a hydrogen system, an electric system, a cooling system and an air brake system. The hydraulic tail plate system comprises a hydraulic tail plate, a hydraulic tail plate oil original tank, a hydraulic tail plate controller and a hydraulic tail plate cross beam; the hydrogen system comprises a hydrogen fuel electric pile, a left hydrogen storage tank, a right hydrogen storage tank, an air inlet air filter and an exhaust silencer; the power system comprises a battery pack, an all-in-one unit, a DCDC, a DCAC, a PTC, a hydrogen stack high-voltage box, a battery high-voltage box, a charging port and a low-voltage power supply unit; the cooling system comprises a high-pressure radiator, a low-pressure radiator, a low-pressure radiator water replenishing tank, a high-pressure radiator water replenishing tank, an air conditioner condenser, an air conditioner electric compressor and an integrated kettle; the air brake system comprises an inflating pump, a drying tank, a lower air cylinder, an upper air cylinder, a front axle and an electric drive axle. The layout of the whole truck can be optimized, so that the hydrogen fuel electric light truck can be compatible with an air brake and a hydraulic tail plate.

The invention relates to the technical field of thread rolling machining, and discloses penetrating rod thread rolling equipment for an automobile air brake, the penetrating rod thread rolling equipment comprises a plurality of sets of thread rolling mechanisms which are sequentially connected in series, and each thread rolling mechanism comprises a feeding assembly, a thread rolling machining assembly, a discharging assembly, a feeding assembly and a detecting assembly; the detection module is used for detecting materials, the discharging module is used for discharging unqualified materials, and qualified materials can enter a thread rolling station; the thread rolling machining assembly is used for conducting thread rolling machining on the materials at the thread rolling station. The hopper in the subsequent thread rolling mechanism is in butt joint with the discharging assembly in the previous thread rolling mechanism. Three sections of threads are machined at a time by splicing the three thread rolling mechanisms, automatic conveying is achieved between the adjacent thread rolling mechanisms, materials do not need to be manually conveyed in sequence, the production efficiency is remarkably improved, and manual intervention is reduced; before entering the thread rolling process, the penetrating rod is subjected to at least one detection, defective products are eliminated, and the production requirements of high-precision parts are met.

The utility model discloses a composite cabin ventilation system meeting dynamic positioning redundancy requirements, which comprises an exhaust shutter, an air inlet shutter and a fan which are positioned in an upper cabin, a structural air duct positioned in a middle cabin and a diesel generator set positioned in a lower cabin, and the air inlet shutter, the fan, the structural air duct and a cavity of the lower cabin are sequentially communicated. The cavity of the lower-layer cabin is communicated to an exhaust shutter through a chimney; and an air brake for controlling the ventilation quantity is arranged between the fan and the structural air duct. According to the utility model, a water cooling mode is utilized to completely replace the heat dissipation air volume of a main part during the design of a conventional cabin ventilation system, and the discharge capacity of a ventilation fan and the size of an air duct are reduced. The internal circulation cooling jet fan does not need to be started, normal operation of the ship can be guaranteed through the frequency conversion fans with the small number and power, and energy conservation and emission reduction are achieved. All the frequency conversion fans and the internal circulation cooling jet fans can work at the same time, the use requirements of tropical areas under extremely hot working conditions are met, and the working condition adaptability of ships is improved.

The invention discloses a control method for stable operation of a heavy-load combined train. The method is applied to the heavy-load combined train formed by connecting at least two traction locomotives and at least one dragged vehicle in series, and comprises the following steps: when the ramp type of the heavy-load combined train running on the current line is a preset type, before or simultaneously adjusting the working state of an air braking device to be a relieving state, adjusting the working state of the air braking device to be the relieving state; controlling the power braking device of the master control locomotive to increase the power braking force, and increasing the power braking force by the power braking device of the slave control locomotive; when the working state is adjusted to be a relieving state, the initial relieving moment is determined, when the accumulative relieving duration reaches the preset first duration, the power braking force of the power braking device of the master control locomotive is adjusted and reduced, and the power braking force of the power braking device of the slave control locomotive is adjusted and reduced; changes of hook pulling force and hook pressing force of the middle slave control locomotive are reduced, the longitudinal force of the train is controlled within an evaluation index range, and the running safety and stability of the train are improved.

A number of variations may include a product including a body mounted air brake stabilizing and steering a vehicle having autonomous driving capabilities or functions, and a method of using the same, wherein the air brake is power actuated.

The utility model relates to the technical field of air brake steel pipes, and discloses an anti-corrosion air brake steel pipe which comprises an air brake steel pipe body and a connecting ring, fixing rings are fixedly arranged at the two ends of the air brake steel pipe body, and the outer surface of the air brake steel pipe body is coated with an anti-corrosion coating. The threaded caps are aligned and inserted into the corresponding connecting rings, then the threaded caps are rotated to rotate the hemispheroid clamping blocks into the corresponding spherical clamping grooves in the connecting rings, at the moment, the hemispheroid clamping blocks are connected with the corresponding spherical clamping grooves in a clamped mode under the springback effect of the springs, and rapid installation of the air brake steel pipe is achieved. By rotating the fixing ring, the hemispheroid clamping block is separated from the spherical clamping groove and retracts into the mounting groove again to complete unlocking, and then the air brake steel pipe can be rapidly disassembled; the anti-corrosion coating has good adhesive force and abrasion resistance, the air brake steel pipe can be effectively protected from being affected by the external environment, meanwhile, the air brake steel pipe can be effectively prevented from being corroded, and the service life of the air brake steel pipe is greatly prolonged.

The application relates to a high-sealing fireproof air brake for a ship, which comprises a frame, a plurality of square blades for closing a ventilation channel in the frame after rotation, and a driving device; hollow edge columns are arranged on two inner side walls of the frame located on both sides of the air flow direction of the ventilation channel; first water through holes are arranged on the two hollow edge columns, and water injection pipes are communicated with the two hollow edge columns; the square blades are hollowly arranged and both ends of the square blades are provided with second water through holes; when the ventilation channel in the frame is closed after the rotation of the square blades, the two square blades located at the most edge are communicated with the corresponding hollow edge columns through the second water through holes of the square blades and the first water through holes of the corresponding hollow edge columns, and the second water through holes of the two adjacent square blades are communicated. The application has the advantages of high sealing.

The invention discloses a rail transit train longitudinal dynamic modeling traction and dynamic braking force calculation method, which comprises the following steps of: 1, acquiring the acceleration of a train, and calculating the sum of external forces borne by the train; 2, calculating the running resistance borne by the train; 3, air braking force borne by the train is calculated; 4, calculating the total traction force and the dynamic braking force of the train; and 5, distributing the total traction force and the dynamic braking force of the train to a specific vehicle. The method has the advantages that the method does not depend on acquisition of a locomotive performance curve any more, complexity and difficulty of locomotive control characteristic modeling in an existing method are simplified, accurate calculation and distribution of train traction and dynamic braking force can be achieved, and construction of a rail transit train longitudinal dynamic model is effectively supported.

The invention belongs to the technical field of rail vehicle engineering, and discloses a simulation calculation method for accurately calculating train dynamic curve passing, which comprises the following steps of: establishing a longitudinal-transverse-vertical interaction heavy haul train-rail three-dimensional coupling dynamics refined model; nonlinear links (such as axle box suspension nonlinearity, center plate contact nonlinearity, wedge friction nonlinearity, coupler gap impact effect and dry friction nonlinearity, buffer nonlinear hysteresis impedance and the like) of locomotive suspension and the multi-parameter continuous change characteristic of a curve track are fully considered. If the coupler is used as an independent rigid part for modeling, analyzing the actual coupling and vibration characteristics of the coupler; in combination with the gas flow theory, an air braking model is further improved, and the influence of a train marshalling form on braking wave distribution and braking wave transmission, the influence of distribution of braking force and brake shoe pressure in the braking process on the vehicle wheel-rail power effect and the like can be considered.

The utility model discloses a pneumatic silencing valve for PCTC, including silencer casing and air brake casing, the outside fixed support platform of silencer casing, the middle part rotationally connected with the main shaft of air brake casing, the rotationally connected with four driven shafts in air brake casing, every two driven shafts equidistance distribution are in the both sides of main shaft, and the air brake blade is fixed with in the outside of main shaft and driven shaft, and the end part that extends to the outside of air brake casing is fixed with crank no.1 in the main shaft and the driven shaft of being in the first, third position, and the end part that extends to the outside of air brake casing is fixed with crank no.2 in the driven shaft of being in the second, fourth position, and one side of air brake casing is provided with connecting rod no.1, connecting rod no.2 and connecting rod no.3. Air brake adopts two -way alternate open -close blade group, and five -piece blade group is driven by the main shaft, and the odd -numbered blade and even -numbered blade form reverse rotation mechanism, and the concentrated eddy current that alternately opens and shuts mode effectively avoids the traditional same -direction opening and closing, and reduces local turbulent energy loss.

The invention relates to the technical field of hydrogen fuel cells, in particular to a locomotive hydrogen fuel cell, an air braking system and a centralized air supply method of the locomotive hydrogen fuel cell and the air braking system. Comprising a first buffer air cylinder and a second buffer air cylinder which are located in the center of a system, one end of the first buffer air cylinder is connected with one end of the second buffer air cylinder, a second check valve is arranged on a connecting pipeline, a pressure sensor is arranged at the end of the extending end of the connecting pipeline, and one end of the first buffer air cylinder is connected with a fuel cell through a pipeline. A pressure reducing valve is arranged on a pipeline connecting the first buffer air cylinder and the fuel cell, the other end of the first buffer air cylinder is connected with an air compressor through a pipeline, an air purifying device and a first check valve are arranged on a pipeline connecting the first buffer air cylinder and the air compressor, and the other end of the second buffer air cylinder is connected with an air braking system. The system is provided with a plurality of air compressor sets, and normal operation of the locomotive cannot be affected even if a single air compressor breaks down.

The utility model provides an air brake interlocking device with a timing function, which relates to the technical field of waste gas treatment systems and comprises a base and two valves, each valve comprises a brake bar, a shell is arranged on the base, two timers are arranged on the outer side of the shell, two flow guide coils are arranged in the shell, one flow guide coil is arranged close to one side of the shell, and the other flow guide coil is arranged close to the other side of the shell. The timer is used for displaying and recording interlocking actions, after the diversion coils are in contact with the metal rod, the contact is in contact with the switch, when the threaded sleeve rotates to drive the interlocking plate to slide, the interlocking plate drives the metal rod to slide and be inserted into the diversion coils, and induced current is generated. Induced current passes through the current sensor, the comparator and the trigger pin, and records are displayed on the timer.

The utility model discloses a loader braking system, and belongs to the technical field of engineering machinery. The loading machine braking system overcomes the defect that in the prior art, due to the failure of a traditional loading machine braking system, vehicle braking cannot be achieved even if a brake is stepped down. The main structure of the device comprises an air storage assembly, an air outlet of the air storage assembly is connected with an electric control brake valve and an air brake valve, the electric control signal end of the electric control brake valve is connected with an electric control pedal through a controller, and air outlets of the electric control brake valve and the air brake valve are connected with air inlets in the two ends of a pressure selection assembly respectively. An air outlet of the pressure selection assembly is connected with the rear axle brake caliper and the front axle brake caliper through the booster pump. The utility model is mainly applied to engineering machinery such as loaders and the like.

The invention provides a method for generating performance degradation data of a train air braking system. The method comprises the following steps: on the basis of a brake system of a preset model, analyzing three stages of pressure rise, maximum pressure and pressure stability of pressure change of a brake cylinder, and extracting a plurality of typical fault modes; based on an extended random process model with non-monotonicity and independent incremental property, three stages of pressure change of a brake cylinder and multiple typical fault modes are combined, and linear, nonlinear or stepped performance degradation process modeling of the train air brake system is carried out; overlapping normal distribution random noise on a performance degradation track generated by modeling, simulating a control precision error of an actual braking system, and optimizing a performance degradation process model of the train air braking system; and utilizing the train air braking system performance degradation process model to generate train air braking system performance degradation data in batches.

A safety device including a pneumatic conductor and a pneumatic valve, the pneumatic conductor configured to be connected at a first end of the pneumatic conductor to the pneumatic valve and the pneumatic conductor configured to be connected at a second end to a second valve, wherein the second valve is configured to be pneumatically connected to an air brake system, wherein the pneumatic valve is opened to activate the air brake system and closed to de-activate the air brake system.

This invention belongs to the field of vehicle suspension technology and discloses a double wishbone independent suspension system and a vehicle. The double wishbone independent suspension system includes a frame assembly and a steering mechanism. The steering mechanism includes a steering knuckle, a shock absorber assembly, an upper control arm assembly, an air brake disc assembly, a lower control arm assembly, and a rack and pinion steering assembly. The shock absorber assembly is located on the side of the frame assembly; the upper control arm assembly is connected to the upper part of the shock absorber assembly and the steering knuckle; the air brake disc assembly is spaced behind the shock absorber assembly in a first direction; the lower control arm assembly is connected to the frame assembly and the steering knuckle, and the lower part of the shock absorber assembly is connected to the lower control arm assembly; the tie rod of the rack and pinion steering assembly is located below the lower control arm assembly and connected to the steering knuckle. This double wishbone independent suspension system can improve the vehicle's suspension comfort and handling stability, and can ensure the vehicle's braking reliability.

A system and a method includes one or more processors to control operation of an air brake system having plural braking devices each disposed on a different vehicle of a vehicle system and configured to control braking efforts in the air brake system via the braking device disposed onboard the corresponding vehicle. The one or more processors may communicate one or more command messages to the braking devices to control one or more of a rate of a braking effort propagation along the vehicle system or a direction of the braking effort propagation between the plural braking devices.

1. The name of the design product: pump part of air compressor. 2. The use of the design product: the overall product is an air compressor mounted on a vehicle or the like, which supplies compressed air to a pneumatic device such as an air brake, and the claimed part is the pump part of the air compressor. 3. The design points of the design product: in the shape of the claimed part. 4. The picture or photograph best indicating the design points: perspective view 1. 5. Other circumstances requiring explanation: the design product requires partial design protection, the part other than the purple covered part is the claimed part, and the purple covered part is not the claimed part.

This invention relates to a method, apparatus, equipment, and storage medium for detecting air brake faults in subway vehicles, belonging to the field of fault diagnosis technology. The method involves: acquiring in-stock data of subway vehicles based on in-stock screening rules; setting the inflation / deflation cycle duration T under normal operating conditions for the subway train; extracting and processing in-stock data for duration T to obtain a training dataset; dividing the data in the training dataset into normal data and fault data based on the subway vehicle's operation and maintenance data to establish an air brake fault detection model; acquiring the data to be detected during subway vehicle operation; importing the data to be detected into the air brake fault detection model to obtain the detection results. This method achieves multi-dimensional detection of subway vehicles through multi-dimensional in-stock data, effectively improving the accuracy of fault detection in the air brake system of subway vehicles.

The application provides a simulation test system and method of a train automatic driving device, in the simulation test system, a train operation monitoring device is used to provide front line information, signal lamp state and ATP protection curve; a train operation simulation device is used to build a train operation simulation model and simulate actual train operation to obtain train operation parameters; a driver control console device is used to provide driver key signal state, main circuit breaker on-off state, air brake system state and traction / brake handle state, receive and send operation state information to the train operation simulation device, and send the train operation parameters to the automatic driving device; a display device is used to display automatic driving state or manual driving state, and generate a driver takeover prompt according to an abnormal signal when the automatic driving is abnormal. The application can meet the demand of testing the locomotive automatic driving system before being put into use, and further obtain the safety, punctuality and / or energy saving effect of the automatic driving device through simulation test.

The embodiment of the application provides a kind of multi-axis flatcar air brake system, comprising: multiple unit brakes, flatcar total wind pipe, flatcar train pipe and parking control subsystem.Unit brake has brake state, release state and parking state.Parking control subsystem includes parking control pipeline and parking air cylinder assembly, parking control pipeline is connected respectively flatcar total wind pipe and each unit brake parking interface, parking air cylinder assembly is set on parking control pipeline, when parking air cylinder assembly interruption provides parking release air for unit brake, unit brake is in parking state.Brake control subsystem includes brake pipeline and the air path control assembly set on brake pipeline, brake pipeline is connected respectively flatcar train pipe and each unit brake brake interface, air path control assembly is used to control to provide air pressure to unit brake or pass through the passage of unit brake to exhaust air to atmosphere, to adjust unit brake to brake state or release state.

The invention relates to a free-marshalling heavy haul train longitudinal dynamics simulation method and device, computer equipment, a computer readable storage medium and a computer program product, and can be applied to the technical field of computers. The method comprises the steps that vehicle serial number information, control signal information and time sequence information are input into a pre-trained braking simulation model for air braking force prediction processing, and air braking force information is obtained; constructing a longitudinal dynamic model according to the air braking force information, the traction force information, the operation resistance information and the coupler force information; determining acceleration information and displacement information of each section of vehicle through a longitudinal dynamic model; and performing iterative simulation processing on all the vehicles according to the acceleration information, the displacement information and the total number of the vehicles and the total simulation time in the simulation parameters to obtain a longitudinal dynamic simulation result of the target heavy haul train. By adopting the method, the accuracy of longitudinal dynamics simulation processing of the heavy-load train can be improved.

The utility model relates to the field of air brake maintenance, and discloses a lifting mechanism and an air brake maintenance transition platform, the lifting mechanism comprises a main body component, the main body component comprises a support cylinder, a first lifting assembly installed in the support cylinder, and a second lifting assembly installed in the first lifting assembly, the power assembly and the supporting component are installed on the outer side of the supporting cylinder, the supporting component comprises a base installed on the outer side of the supporting cylinder and supporting feet installed on the outer side of the base, the first lifting assembly can ascend and descend in the supporting cylinder, the second lifting assembly can ascend and descend in the first lifting assembly, and the first lifting assembly can ascend and descend in the second lifting assembly. The power assembly provides power for lifting of the first lifting assembly and the second lifting assembly. Through mutual cooperation of all the parts, the platform can be lifted and lowered by the first lifting rod and the second lifting rod, so that the air brake placed on the outer side of the platform ascends and descends, and the purpose of easily disassembling and assembling the air brake is achieved.

The invention provides a slide valve device, and relates to the technical field of railway vehicle air braking. Comprising a sliding valve seat and a valve sleeve, the sliding valve seat comprises a first sealing piece and a seat body, and the first sealing piece is in sealing connection with one side of the seat body; a sliding groove is formed in the inner hole wall of the valve sleeve, a second sealing piece is arranged on the bottom face of the sliding groove in a sealed mode, the side, away from the base body, of the first sealing piece can be attached to the side face of the second sealing piece, a first valve port set is arranged on the first sealing piece, and a second valve port set corresponding to the first valve port set is arranged on the second sealing piece in a penetrating mode. A gas path group is arranged in the seat body in a penetrating manner; the first valve port group is communicated with the gas path group; the first sealing piece and the second sealing piece are made of high-strength wear-resistant materials. Due to the fact that the first sealing piece and the second sealing piece are large in hardness and excellent in abrasion resistance, foreign matter is not prone to abrading the first sealing piece and the second sealing piece, the sealing performance between the first sealing piece and the second sealing piece is guaranteed, and the service life of the sliding valve device is prolonged by more than ten times.

The invention relates to the field of rail transit, in particular to a rail transit vehicle electric pneumatic braking control system and method.The control system comprises an electronic braking control unit, a common pre-control branch, an emergency pre-control branch and a relay valve, and the electronic braking control unit is used for controlling the common pre-control branch to output common pre-control pressure; the emergency pre-control branch comprises an emergency valve, a remote relief electromagnetic valve and an empty and load valve, the empty and load valve outputs emergency pre-control pressure corresponding to vehicle load information, and the relay valve receives common and emergency pre-control pressure and selects one of the common and emergency pre-control pressure to output corresponding compressed air to a brake cylinder; the electronic brake control unit analyzes the service brake instruction, the service pre-control pressure and the pressure value at the output position of the relay valve, can judge the emergency valve fault and control the remote relieving electromagnetic valve to empty compressed air of the emergency pre-control branch, and the problems that after the emergency valve fault occurs, the emergency air path pressure is not relieved, and the relieving capacity of the air path pressure is unstable are solved.

The utility model discloses a kind of air brake system pipeline quick sealing joint, including telescopic pipe and support pipe, the surface of telescopic pipe is equipped with buffer spring, the surface of support pipe is equipped with mounting groove, the surface of support pipe is nested with convex ring, the convex ring is made of rubber thermoplastic;It is characterized in that, it further includes locking assembly, the locking assembly is set in the both ends of telescopic pipe for quick connection fixed external pipeline;Support pipe can be nested in the inside of pipeline first, then connect pipeline with locking assembly by support pipe, and in locking assembly, the surface of threaded sleeve is equipped with locking groove in array, after pipeline is connected with butt joint groove, by rotating the locking sleeve of the surface of threaded sleeve, make threaded sleeve along locking groove produce deformation, make pipeline tightly extrude on the surface of support pipe, this design increases the contact area between pipeline and sealing joint, make pipeline stress uniform when installing, improve the sealing property of sealing joint.

An air dryer apparatus is provided for a vehicle air brake charging system. The air dryer apparatus comprises an air dryer governor assembly. The air dryer governor assembly includes a plastic sleeve having an external sleeve surface and an internal sleeve surface that defines a piston bore. The air dryer governor assembly also includes a piston disposed in the piston bore and slidable along the internal sleeve surface between a preset cut-out setting and a preset cut-in setting of the air dryer governor assembly. The air dryer governor assembly further includes one or more ribs disposed on the external sleeve surface to prevent deformation of the plastic sleeve when the piston slides along the internal sleeve surface between the preset cut-out and cut-in settings.

The present invention discloses a composite braking deceleration control method, which uses vehicle status information to evaluate the available electric motor torque of the vehicle in real time and calculates the maximum deceleration that can be provided by the electric motor braking in combination with the mass estimation value. The target braking deceleration is then distributed into the electric braking demand torque and the air braking demand deceleration according to the set rules and sent to the corresponding subsystems. At the same time, the actual deceleration of the vehicle body is detected and compared with the target braking deceleration. If there is an error, the deceleration is first adjusted by taking advantage of the motor's fast and precise adjustment until the motor reaches the maximum negative torque or zero torque. If the error cannot be eliminated, the air brake is adjusted to reduce the error between the actual deceleration of the vehicle body and the target braking deceleration while the motor braking remains stable. The present invention detects the actual deceleration value of the vehicle body and forms a closed loop with the target braking deceleration. The electric brake is first adjusted by the motor, and then the air brake is adjusted after the motor reaches its capacity limit to ensure precise control of the deceleration.