86 results about "Unit train" patented technology

The invention discloses a cooperative control method for a heavy haul railway long and large combination train based on a coupler force closed loop in order to solve the problem that operation safety is threatened due to unstability and breakage of a coupler caused by overlarge longitudinal impact force in the traction braking process of the long and large marshalling train. According to the method, coupler force is introduced into a control system of a locomotive to form a unit train coupler force closed-loop control system in a marshalling train, and traditional locomotive control is changed into train control. According to the method, the purpose of minimizing coupler force of slave control locomotives and front locomotives in a group is achieved, a distributed cooperative control strategy is adopted for unit trains in the group, the purpose of equivalently decomposing the long and large heavy-load combined train into unit trains running independently is achieved with the fact that stress of front coupler of each slave control locomotive is almost zero. And automatic driving operation of the unit trains in the marshalling is realized. By recognizing the stress change trend of the couplers and adopting a coupler force closed-loop active control mode, the overlarge impact force of the train couplers is relieved, and the running safety of the whole heavy-load train is guaranteed.

The invention discloses an automatic shunting system and method for a bullet train section / a bullet train station, and belongs to the technical field of high-speed railway train operation control. By additionally arranging a ground remote control server, a remote console, a vehicle-mounted remote control unit, a dormancy awakening unit, an environment sensing unit and other devices and combining an ATP / ATO system and a 5G communication technology, the functions of automatic dormancy awakening, remote driving and unmanned shunting of the motor train unit in a motor train section / a motor train station are achieved. The problems that traditional manual shunting is high in labor intensity, low in efficiency and multiple in potential safety hazards are solved.

According to the virtual coupling marshalling self-discipline control method and system for the long and large heavy-load combined train based on the target distance, various heterogeneous sensors are deployed on a locomotive and used for all-weather active distance measurement; fusing multi-sensor data, and outputting a real-time vehicle distance; calculating and predicting a target value of the safe distance between the marshalling locomotive and the tail of the front locomotive; a driver controller position instruction value equivalent to traction braking force is calculated and connected into a locomotive control system, and a unit train control closed loop with the distance as the target is formed; closed-loop control taking distance as a target is fused with a train control instruction transmitted by a main control locomotive through LOCOTROL, so that a long and large heavy-load combined train is equivalently decomposed into independent automatic driving unit trains for operation, and the longitudinal impact force of the long and large heavy-load train is eliminated; and the operation and control modes of the long and large heavy haul train and the virtual marshalling train of the heavy haul railway are overturned.

The invention is suitable for the technical field of power detection, and provides a flashover discharge early warning method of a high-voltage cable terminal for a motor train unit, electronic equipment and a storage medium, and the method comprises the steps: constructing a flashover discharge test loop; environmental parameter critical values of flashover discharge of the high-voltage cable terminal for the motor train unit are determined through a flashover discharge test loop, and the environmental parameter critical values comprise a humidity critical value and an air pollution degree critical value; collecting current environment parameter values of the high-voltage cable terminal for the motor train unit, wherein the current environment parameter values comprise an air humidity value and an air pollution degree value at the current moment; and carrying out flashover discharge early warning based on the current environment parameter value and the environment parameter critical value. According to the technical scheme provided by the embodiment of the invention, the early warning of the flashover discharge of the high-voltage cable terminal for the motor train unit is realized, the flashover discharge is effectively avoided, and the safety of a power system of the motor train unit is ensured.

The present application discloses a rescue system and method for multiple unit trains, which are applied to the technical field of rail transit. The system includes: a rescue trailing car and a leading car to be rescued that is coupled to the rescue trailing car; the emergency traction control line of the rescue trailing car is connected to the emergency traction control line of the leading car to be rescued, and the driver's control cabin at the non-coupling end of the leading car to be rescued is configured to: perform the traction control of the rescue trailing car in the emergency traction mode; the service brake control line of the rescue trailing car is connected to the service brake control line of the leading car to be rescued, and the driver's control cabin at the non-coupling end of the leading car to be rescued is further configured to: when receiving a service brake application command, control the rescue trailing car and the leading car to be rescued to apply the service brake synchronously; when receiving a service brake release command, control the rescue trailing car and the leading car to be rescued to release the service brake synchronously. By applying the solution of the present application, while realizing the push rescue, the rescue in the form of the leading car's lookout is achieved.

The invention discloses a motor train unit train body service state detection method and system, and belongs to the technical field of motor train unit detection. The method comprises the following steps: a corrosion state detection stage: positioning a corrosion area, recording a corrosion range and a maximum corrosion depth, and collecting a corrosion product sample; then component testing is conducted on the corrosion product sample, corrosion product components and corrosion types are analyzed, a corrosion mechanism is generated, and a corrosion detection result is obtained; a weld joint dual-detection stage: detecting structural defects or cracks of a target weld joint area through a dye penetrant inspection method, carrying out residual stress test by using ultrasonic waves, and evaluating the use performance of the vehicle to obtain a weld joint detection result; and a fatigue strength and residual life evaluation stage: establishing a vehicle body finite element model under different vehicle conditions according to a corrosion detection result and a welding seam detection result, evaluating the residual life of the vehicle body through static strength and fatigue strength simulation, and generating a vehicle body service state. According to the invention, high-efficiency and comprehensive monitoring and evaluation are realized.

The invention provides a motor train unit brake pad life prediction and early warning method and system and a medium, and relates to the technical field of motor train unit life prediction and early warning, and the method comprises the steps: collecting operation and maintenance data of a motor train unit, analyzing the distribution characteristic condition of abrasion data of brake pads in different compartments, calculating the correlation between the operation time and the number of parking times, and calculating the service life of the motor train unit. Obtaining a relation model of the running time and the total parking number; establishing a life prediction model of the motor train unit brake pad to obtain a residual life function of the brake pad at a specific moment; and analyzing the residual life probability conditions of the brake pad in different operation stages in the residual life function, converting the risk section into an operation time risk section, and further performing evaluation and early warning on the service life risk of the brake pad. The method has the beneficial effects that accurate prediction and risk assessment of the service life of the brake pad can be realized through comprehensive analysis of the running time and the total number of parking times, and powerful support is provided for formulating a scientific and reasonable maintenance strategy.

The invention relates to a high-speed multiple-unit train (1) having a maximum speed of more than 250 km / h, comprising a plurality of trailer unit car bodies (10, 20, 30, 40) and two end car bodies (50), wherein at least one first trailer unit car body (10) has two terminal traction bogies (42) and at least one second trailer unit car body (20) has two Jacobs bogies (41).

In order to solve the problem that an existing air conditioner cabinet does not have enough installation space for arranging a control panel for achieving the manual refrigeration function of an air conditioner, the utility model provides the external control box of the air conditioner cabinet of the motor train unit. The external control box of the air conditioner cabinet of the motor train unit is installed above a luggage rack of a passenger cabin of the motor train unit, and comprises a sliding rail installed on a camber beam of a train body; one part of the fixing support penetrates through a notch of a side top plate of a passenger cabin of the motor train unit and then is fixed to the sliding rail; the air conditioner control panel is fixed on the fixed bracket; the control box body is connected with the fixing support, the air conditioner control panel and the fixing support are wrapped by the control box body, and the control box body is tightly attached to a side top plate of a passenger cabin of the motor train unit.

The present invention relates to a sand adding and sand pumping device for multiple unit trains, which includes a sand adding device and a sand pumping device arranged on a movable trolley. The sand adding device includes a sand storage tank, on the upper part of which a filter screen is provided, and a vibrator is arranged on the filter screen. The lower end of the sand storage tank communicates with a sand leakage tank, and the lower end of the sand leakage tank is connected to a sending cylinder through a pipeline 1. The sending cylinder is connected to the sand box of the multiple unit train through a connecting component. The sand pumping device includes a sand pumping pipe for pumping out the sand in the sand box of the multiple unit train. The sand pumping pipe communicates with a negative pressure generator. One end of the negative pressure generator is connected to a high-pressure air source through an air pipe, and the other end of the negative pressure generator is connected to a dust removal component through a connecting pipe. A sand pumping plate valve is installed on the connecting pipe. By arranging the sand adding device and the sand pumping device on the movable trolley, the sand pumping device and the sand adding device can be moved conveniently by driving the trolley. The sand adding device and the sand pumping device are integrally arranged, with convenient conversion and easy operation.

The invention provides a motor train unit interior comfort testing method and device. The corresponding motor train unit interior comfort testing method comprises the steps that vibration comfort parameters of a motor train unit are determined according to the vibration acceleration, the vibration frequency, the frequency correction coefficient, the longitudinal acceleration, the transverse acceleration and the vertical acceleration of the motor train unit; determining a noise comfort parameter of the motor train unit according to the weighting equivalent continuous sound pressure level of the motor train unit; determining a pressure comfort parameter of the motor train unit according to the pressure change rate in the motor train unit; and determining the comfort of the motor train unit according to the vibration comfort parameter, the noise comfort parameter and the pressure comfort parameter. According to the invention, tracking testing is carried out on the motor train unit with noise, vibration, abnormal pressure change and other phenomena, so that instructive suggestions are provided for motor train unit maintenance and deployment of an operation unit.

The present invention discloses a method for evaluating the dynamic safety of railway subgrades in combination with vehicle-track coupling analysis, which relates to the technical field of safety evaluation and includes: retrieving to obtain K unit train formation models of K passing trains and K train-related parameter information; detecting the track state to obtain the track geometric flatness spectrum; obtaining the subgrade mechanical parameter information of the local subgrade; establishing a subgrade-rail coupling model; integrating the K unit train formation models into the subgrade-rail coupling model to obtain a vehicle-track coupling dynamics model; using the target construction task to drive the vehicle-track coupling dynamics model to simulate the external disturbance of the subgrade, and outputting the critical condition space as the evaluation result of the railway subgrade safety. The present invention solves the technical problem that the existing technology is not accurate enough in evaluating the dynamic safety of railway subgrades, and achieves the technical effect of improving the accuracy of the dynamic safety evaluation of railway subgrades by establishing a vehicle-track coupling dynamics model and simulating external disturbances.

The invention relates to a high-speed multiple-unit train (1) having a maximum speed of more than 250 km / h, comprising a plurality of car bodies (10, 20, 30), wherein at least one car body (10, 20, 30) is a mid-floor car body (10).

The utility model discloses a motor train unit train roof operation safety protection tool which comprises a bottom plate and a supporting part, the supporting part is arranged at the top of the bottom plate and provided with a connecting base arranged at the top of the bottom plate, a driving rotating rod is rotationally arranged at the top of the connecting base, a guardrail is rotationally arranged at the top end of the driving rotating rod, and the driving rotating rod is connected with the guardrail. A transmission rotating rod is rotatably arranged on the side face of the driving rotating rod, a transmission frame is slidably arranged in the bottom plate in the arrangement direction of the bottom plate, the top of the transmission frame is rotatably connected with the bottom end of the transmission rotating rod, and the transmission frame displaces to drive the transmission rotating rod to rotate so as to push the driving rotating rod to rotate to drive the guardrail to move horizontally. By arranging the supporting part, the transmission frame can slide and move in the bottom plate, so that the transmission rotating rod at the top of the transmission frame can be driven to rotate, the transmission rotating rod can push the driving rotating rod rotationally connected with the transmission rotating rod to rotate, the guardrail can be driven to move horizontally, and space is saved.

The present invention is a tunnel rescue device for multiple unit trains. It is characterized in that the structure includes a three-stage oil cylinder I, a three-stage oil cylinder II, a traveling trolley I, a traveling trolley II, a transverse displacement device and a coupling rope. It is a combined rescue device with a light single-piece mass, and most of them are made of non-ferrous metals, which is convenient for handling and installation. At the same time, the present invention has a large lifting and recovery stroke, and a single lifting and transverse displacement operation can meet the requirements of the recovery rescue operation for derailed vehicles within a range of 1.1 meters off the track. In addition, the application places of the present invention are wider and more flexible, including derailment accident places where large rescue equipment cannot be constructed, such as in tunnels. It can meet the requirements of the lifting and recovery rescue for a large range of inclination degrees of accident vehicles, and the recovery rescue operation can be carried out without first straightening the vehicle body, which reduces the rescue difficulty, saves the rescue time, and has a wider application range and higher safety.

The present invention relates to a method, system, electronic device and medium for controlling the formation of virtual formation trains, and particularly relates to the technical field of rail transit. The method includes determining whether a preset event trigger mechanism is triggered according to the control amount of the leading train at the current moment and the state of the unit train; selecting to solve the Tube-MPC problem model or solve the ELQR controller based on the train operation environment model, the nominal state of the unit train at the current moment and the optimal nominal state of the target train according to the judgment result, so as to obtain the optimal nominal control amount of the unit train at the current moment and the optimal nominal state of the unit train at the current moment; calculating the optimal control amount of the unit train according to the optimal nominal control amount of the unit train at the current moment, then updating the moment and returning to the judgment step. The present invention can ensure the stability of single trains and queues under the influence of uncertain disturbances and communication delays, and ensure stable formation operation and synchronous operation at small intervals.

The utility model discloses a motor train unit heat dissipation equipment cleaning mechanism, and belongs to the technical field of motor train unit heat dissipation equipment cleaning. The motor train unit heat dissipation equipment cleaning mechanism comprises a fixing frame and an air exhaust structure used for collecting dust, the lower end face of the fixing frame is fixedly connected with a cleaning frame communicating with the fixing frame, and a cleaning mechanism for cleaning dust on the surface of the motor train unit heat dissipation equipment is arranged in the cleaning frame; the cleaning mechanism comprises a pair of ventilation nets fixedly connected to the interior of the cleaning frame and a driving assembly located between the two ventilation nets, a first brush block is arranged below the ventilation nets, a plurality of second brush blocks are arranged on the periphery of the first brush block, the second brush blocks and the first brush block synchronously conduct circular motion, and the first brush block and the second brush block conduct circular motion synchronously; compared with a single-point or manual cleaning mode, the cleaning efficiency is greatly improved, it is ensured that dust on the surface of the heat dissipation equipment can be effectively removed within a short time, and the normal heat dissipation function of the heat dissipation equipment can be maintained.

The present disclosure relates to a coupled multiple-unit train set and a wireless communication system thereof. The coupled multiple-unit train set comprises at least two train formations; each train formation in the coupled multiple-unit train set is provided with a backbone network node, a plurality of terminal nodes, and at least one virtual backbone network node; once the train formations in the coupled multiple-unit train set have been connected by means of couplers, a wireless connection is established between the virtual backbone network nodes of the train formations connected by means of the couplers, so that respective train numbers and device identifiers are exchanged between the virtual backbone network nodes; a topology discovery protocol is run between another virtual backbone network node and the backbone network node of the local train formation, so as to establish mutually addressable routing tables.

The invention relates to the field of high-speed train aerodynamics and motor train unit equipment, in particular to a high-speed train lift wing and wing-train cooperative aerodynamic characteristic engineering estimation method. A high-speed train assembled with a plurality of unit groups of lift wings is taken as an object, and key technical parameters are optimized aiming at aerodynamic design and model selection of the lift wings of the high-speed train and collaborative layout on the high-speed train on the basis of referring to finite basic theories, numerical simulation and experimental tests; the aerodynamic characteristics such as the wing profile lift coefficient and distribution characteristic, the lift line characteristic and the resistance characteristic of the lift wing and wing train system work, and the wing train cooperative operation gas work interference effect are rapidly determined through engineering experience and a theoretical method, and universality evaluation and general engineering calculation of the aerodynamic characteristics of the high-speed train are achieved. Powerful reference and technical support can be provided for development and application of lifting wing systems of wheel-rail trains with the speed of 400 + km / h and high-speed maglev trains.

The present application discloses a method for dynamic marshaling of virtual trains at different speeds, comprising: when two unit trains begin to be marshaled, in the case where the initial speeds of the first unit train and the second unit train adjacent to and catching up with it are different, obtaining the reference speed of the second unit train during the marshaling process, and obtaining the reference running interval of the two unit trains at any time; defining the interval tracking error and the speed tracking error based on the reference running interval, and constructing a non-singular terminal sliding surface; designing a non-singular terminal sliding control strategy, and controlling the dynamic marshaling of the train so that the interval tracking error and the speed tracking error can reach the non-singular terminal sliding surface under any initial conditions, and can converge asymptotically to zero within a finite time. The present application constructs a marshaling stage control model for the case of virtual trains at different speeds, and designs a non-singular terminal sliding control strategy to ensure that the trains can be safely and efficiently re-marshaled in the switch section according to the mission requirements.

The invention relates to a high-speed multiple-unit train (1) having a maximum speed of more than 250 km / h, comprising a plurality of trailer unit car bodies (10.1-10.16), wherein at least one car body (10.1-10.16) is a low-floor car body (12) and at least one car body (10.1-10.16) is a high-floor car body (14).

The utility model discloses a motor train unit train toilet electrically operated gate, and belongs to the technical field of urban rail transit. A motor train unit train toilet electric door comprises a first sliding rail, a door carrying frame is connected to the first sliding rail in a sliding mode, a door body is fixedly connected to the door carrying frame, a transmission belt is installed on the first sliding rail, a plurality of transmission wheels are coupled to the inner side of the transmission belt, the transmission wheels are rotatably installed on the first sliding rail, and the door carrying frame is fixedly connected with the transmission belt. A driving motor is fixedly installed on the first sliding rail, the output end of the driving motor is coupled with one transmission wheel, and an indicator lamp and an infrared sensor are fixedly installed on the outer side of the door body. The transmission belt and the door carrying frame are adopted for driving the door body, so that the side-hung opening range of the door body is not limited, meanwhile, the position of the driving motor can be flexibly adjusted according to the actual situation, and the practicability of the device is improved.

The utility model discloses a motor train unit train head hook and middle car coupler fastening tool which comprises a coupler head, a coupler body and a coupler tail, the coupler head is connected with the coupler tail through the coupler body, the coupler body comprises a first damping mechanism and a second damping mechanism, the first damping mechanism is connected with the second damping mechanism, and the first damping mechanism comprises a first damping rod, a first piston and a first damping cylinder. The first damping rod is slidably connected with the first damping cylinder through the first piston. The coupler has the advantages that the coupler body comprises the first damping mechanism and the second damping mechanism, triple damping can be achieved through the first damping mechanism and the second damping mechanism, the damping effect is further improved, and the buffering effect is improved when two motor train unit couplers are in butt joint.

The invention discloses an improvement method of a locomotive synchronous control system. The method comprises the following steps: synchronizing the time of each unit train synchronous control system; the position of each unit train, front line data and driving permission information are obtained, the head locomotive obtains operation condition information of the head train, future operation actions of the head locomotive are planned according to the signal lamp state in the interval where the head train is located, and the occurrence time of the operation actions is marked with local time; the rear locomotive obtains the positions of all the front locomotives, the current operation condition information of all the front locomotives and the future operation actions of all the front locomotives, and converts local time stamps according to the time synchronization information; in combination with the distance between the rear locomotive and the adjacent front locomotive and the operation condition information of the rear train, the future operation action of the rear train is planned, and the occurrence moment of the operation action of the rear train is marked with local time; and the method can better adapt to communication delay.

This invention provides a control system for achieving arc-free coupling and uncoupling of trains in multiple-unit train operation. If the stationary first train is in a waiting-to-coupling state and under parking braking, and receives a power-up command for the electric hook, but the electric hook is not connected, the power-up relay is closed, connecting the train line of the first train to the preset control voltage positive supply terminal, thus energizing the train line. The second train, about to be coupled to the first train, moves at low speed, and its train line is energized. During coupling, since the train line of the first train is already energized, the train lines of both trains have the same voltage, resulting in arc-free coupling. If the two coupled trains are in a waiting-to-uncoupling state, and one of the driver's cabs is activated, the activation of that driver's cab is deactivated, causing the corresponding driver's cab activation relay to open, disconnecting the train line from the preset control voltage positive supply terminal, thus de-energizing the train line during uncoupling and achieving arc-free uncoupling.

The present invention relates to a box body for a power unit converter of a multiple unit train and a box body with a cooling unit. Among them, the box body for the power unit converter of the multiple unit train includes a top frame and a bottom plate. At both ends of the bottom plate, a first side plate and a second side plate are respectively fixed. An intermediate partition is provided between the two. A first clean room is formed between the intermediate partition and the first side plate, and a composite dirty room is formed between the intermediate partition and the second side plate. A first installation partition and a second installation partition are provided in the composite dirty room. A third installation partition is provided in the exact middle of the composite dirty room close to the second side plate. The first installation partition, the second installation partition and the third installation partition divide the composite dirty room into a second clean room, a third clean room, a fourth clean room and a main dirty room. The present invention can make the box body structure more compact, meet the requirement of installing more devices under the condition that the total installation space of the box body remains unchanged, and does not affect the installation and maintenance of the devices inside the power unit converter.

The utility model relates to the field of motor train unit flow guide covers, and discloses a glass fiber reinforced plastic flow guide cover for a motor train unit, which comprises an air conditioner cover, a resistance reducing mechanism is arranged at the rear end of the air conditioner cover, the resistance reducing mechanism comprises a plurality of fixing grooves formed in the outer wall of the rear end of the air conditioner cover, and connecting plates are arranged in the fixing grooves. And spoilers are fixedly connected to the outer walls of the rear ends of the connecting plates, a noise reduction mechanism is arranged in the air conditioner cover and comprises a plurality of bearing plates fixed to the edge of the inner top face of the air conditioner cover, and clamping columns are fixedly connected to the upper surfaces of the bearing plates. According to the air conditioner cover, the connecting plates penetrate through the fixing holes through the bolts to be fixed, then when a train runs at a high speed and airflow passes through the rear end of the air conditioner cover, the airflow is cut through the spoilers, and therefore the problem that the airflow forms vortex at the rear end of the air conditioner cover is avoided; therefore, the resistance and the power consumption when the train travels can be effectively reduced.

The utility model relates to the field of glass fiber reinforced plastic part detection devices, and discloses a motor train unit glass fiber reinforced plastic part thickness uniformity detection device which comprises a workbench, conveyor belts are fixedly connected to the two sides of the upper surface of the workbench, a conveying mechanism is arranged on one side of the upper surface of the workbench, and the conveying mechanism comprises a fixing frame. A multi-section electric telescopic rod is fixedly connected to the center of the upper surface of the fixing frame, a fixing plate is fixedly connected to the output end of the multi-section electric telescopic rod, and a push plate is hinged to the lower surface of the fixing plate. According to the clamping device, the clamping mechanism is provided with the two servo motors, the transverse position and the longitudinal position of a component are adjusted under the action of the two-way threaded rod, and therefore the clamping mechanism can be adjusted according to the length and the width of the component; therefore, the clamping mechanism can clamp and position the parts with different shapes and sizes, and the detection range of the device is expanded.

The present invention discloses a method, a system, an electronic device and a storage medium for obtaining overvoltage signals of a multiple unit train, belonging to the technical field of multiple unit trains. Based on the broadband transmission characteristics of the voltage transformer of the multiple unit train, by measuring the voltage on the secondary side of the voltage transformer when overvoltage occurs, and using the voltage on the secondary side and the broadband transmission characteristics of the voltage transformer, the voltage on the primary side of the voltage transformer, that is, the overvoltage signal, is reconstructed. Through the above design, the present invention can obtain more accurate overvoltage data, providing effective data support for accurately tracing the origin of accidents caused by overvoltage and subsequent accident prevention.

The invention provides a motor train unit whole vehicle design and verification method, and relates to the technical field of motor train unit design. The method comprises the steps that if it is determined that the bullet train is a middle train, a first test verification step related to the performance of the whole train and the performance of a traction system is executed; if it is determined that the trailer is the intermediate vehicle, a second test verification step related to the performance of the whole vehicle and the braking system is executed; and if the vehicle is determined to be the end vehicle, a third test verification step related to the operation of the whole vehicle is executed. According to the motor train unit whole vehicle design and verification method provided by the embodiment of the invention, the design and manufacturing cost of the motor train unit can be reduced, and the production efficiency and the yield of the motor train unit are improved.