813 results about "Vehicle engineering" patented technology

The invention discloses a control method, device and equipment of a semi-active suspension and a storage medium, and relates to the technical field of vehicle engineering.The control method of the semi-active suspension comprises the steps that under the condition that a vehicle-mounted system does not have a fault, driving modes are distinguished according to a mode selection signal, and a current driving mode is obtained; when the current driving mode is not the deceleration strip mode, determining a target control strategy according to the current driving mode; and controlling the semi-active suspension according to the target control strategy. The vehicle suspension system can be adjusted according to different driving requirements and road conditions, more excellent driving feeling and safety are provided, a driver can switch between a comfortable driving mode and a motion driving mode through an accurate control strategy, meanwhile, better vehicle stability and control performance are obtained under different road conditions, and the driving experience of the driver is improved. The smoothness of the vehicle and the road adhesiveness are improved, and the overall driving comfort and safety are improved.

The invention provides a tractor semitrailer full-working-condition active stability control system and method, and belongs to the technical field of vehicle engineering. The system comprises a kinetic model module, a reference quantity determination module and an active stability controller module. The dynamic model module constructs a linear three-degree-of-freedom tractor semitrailer model, a hub motor model and a longitudinal driver model. The reference quantity determination module generates an ideal state value according to the steady state condition of the system and corrects the ideal state value in combination with the road attachment condition. The active stability controller module is divided into three layers, an MIMO-IMFAC controller calculates additional yawing moment, a torque optimization controller optimizes tire load distribution through a quadratic programming algorithm, and a driving / braking torque distribution controller preferentially uses regenerative braking and dynamically adjusts braking torque of the semitrailer according to the yawing moment. By adopting the control system and the control method, the stability and the dynamic response capability of the vehicle under complex working conditions are remarkably improved.

The invention relates to the technical field of vehicle engineering and automatic control, in particular to an AMPC control method for a hub motor suspension system of an electric vehicle. The method comprises the following steps: S1, obtaining pavement preview information; s2, inputting road excitation in the information into a prediction model, and outputting dynamic response of the hub motor suspension system; s3, generating a control signal based on an adaptive model prediction control method; and S4, adjusting the dynamic response by using a control signal. By means of the method, the hub motor suspension system can perceive the road condition in advance through the road surface preview information, control signals are generated and hub motor input and suspension parameters are adjusted in combination with the AMPC method, the response speed, stability and comfort of the system are improved, and therefore the control requirements under different road conditions are met.

The utility model provides a vehicle-mounted liquid hydrogen storage tank and a vehicle, and relates to the field of vehicle engineering technology. The vehicle-mounted liquid hydrogen storage tank comprises: a tank body and a spiral rib installed inside the tank body, and the outer ring of the spiral rib is welded to the tank body. Compared with welding multiple baffles separately, the processing efficiency is higher, which is conducive to reducing the production cost of the liquid hydrogen storage tank. The spiral rib can separate the impact of liquid hydrogen, and can also separate the thermal stratification caused by heat leakage, shaking and flashing. The temperature difference of each divided part is small, and then the overall temperature difference is also small, which reduces the degree of thermal stratification to a certain extent, thereby achieving the technical effects of preventing liquid hydrogen from shaking and reducing the degree of thermal stratification.

Systems and methods for integrating system information for communication and / or electrical systems to provide a mapping for diagnostic trouble codes generated by both systems. A unified mapping is generated using design outputs for both systems. When a set of diagnostic trouble codes is generated by a system, the unified mapping is applied by a troubleshooting tool to direct maintenance personnel to a failure mode and the source of malfunction. The result may be applicable to a troubleshooting tool for a vehicle system.

The invention discloses a braking system and a vehicle, and relates to the technical field of vehicle engineering. In the braking system, a braking main body comprises a hydraulic driving assembly and two braking clamping plates; at least part of the structure of the hydraulic driving assembly is arranged in the suspension frame, and the two output ends of the hydraulic driving assembly stretch out of the two ends of the suspension frame in the transverse direction correspondingly. The two brake clamping plates are arranged on the two sides of the suspension frame in the transverse direction and connected to the two output ends of the hydraulic driving assembly correspondingly. The bottom ends of the brake clamping plates are located below the suspension frame, and the hydraulic driving assembly can drive the two brake clamping plates to move at the same time, so that the bottom ends of the two brake clamping plates get close to or away from each other in the transverse direction. According to the braking system, the bottom ends of the two braking clamping plates can be close to each other so as to hold the track in a matched mode on the two sides of the track and conduct friction braking, at least part of the structure of the hydraulic driving assembly can be arranged in the suspension frame and can be connected to the upper structures of the braking clamping plates, and the requirement for occupying the external space of the suspension frame can be reduced while braking is achieved.

The invention relates to the technical field of vehicle engineering, and discloses a vehicle transverse stability coordination control system based on sensing fusion, which comprises a main controller, a sensing fusion coprocessor and a transverse control coprocessor. The main controller calls and sends a stability control instruction according to the driving state; the sensing fusion coprocessor schedules a transverse control instruction in multi-source information fusion; the transverse control coprocessor analyzes the parameters to obtain basic control signals, dynamically monitors transverse acceleration, yaw velocity and tire slip angles, generates and outputs compensation signals through mode adjustment such as dynamic coordination function bypass selection and global or local parameter dynamic coordination, and controls an actuator after being fused with the basic signals. The system integrates a data fusion module, a state evaluation module and a multi-strategy dynamic adjustment module, multi-source information accurate fusion and multi-parameter cooperative control are achieved, the transverse stability and driving safety of the vehicle under the complex working condition are improved, and the method is suitable for the field of vehicle engineering control.

The invention provides an automatic rearview mirror adjusting method and device based on a sitting posture, electronic equipment and a medium, and relates to the field of vehicle engineering.The method comprises the steps that the speed of a current vehicle, the seat position, the backrest angle of a seat, the sight height of a driver and the sight direction of the driver are obtained based on a rearview mirror adjusting request initiated by the driver; if the angle of the sight line direction deviating from the head-up direction meets a preset angle, processing the seat position, the backrest angle, the sight line height and the sight line direction, and determining a target sitting posture index of the driver; determining a target rearview mirror change angle based on the target sitting posture index; and if the target rearview mirror change angle meets the configured angle change condition and the vehicle speed of the current vehicle meets the configured preset vehicle speed, the rearview mirror of the current vehicle is adjusted according to the target rearview mirror change angle. According to the invention, the convenience, safety, accuracy, adaptability, demand accuracy, comfort and rearview stability of driving the vehicle by the driver can be improved.

The utility model relates to the technical field of vehicle engineering, in particular to a front cover lock which is used for being matched with a lock ring fixed on a front cover and comprises a lock body, a lock cylinder module and a safety trigger module, the lock body is fixedly connected with a vehicle body, a lock hole for receiving the lock ring is formed in the lock body, the lock cylinder module comprises a ratchet wheel and a safety lock hook, the lock ring is limited in the lock hole through the ratchet wheel, and the safety lock hook is arranged in the lock hole. The lock ring pushes the ratchet wheel when being jacked up, the pushed ratchet wheel drives the safety lock hook, the driven safety lock hook is blocked at an outlet of the lock hole to limit the lock ring, the safety trigger module comprises a gunpowder trigger and a transmission assembly, the gunpowder trigger pushes the transmission assembly after being triggered, and the pushed transmission assembly jacks up the lock ring limited in the lock hole by the ratchet wheel. The technical problem that in the prior art, a front cover lock cannot eliminate or relieve physical damage to pedestrians after collision is solved.

The utility model discloses a vehicle body exterior trimming assembly and a vehicle, and relates to the technical field of vehicle engineering. The vehicle body exterior trimming assembly comprises an exterior trimming plate and a light-transmitting plate, wherein at least partial area of the exterior trimming plate is a light-transmitting area; and the light-emitting assembly is arranged on the inner side of the outer decoration plate and comprises a light guide plate and a light source piece emitting light rays towards the light guide plate, at least part of the light guide plate corresponds to the light-transmitting area, and the light source piece is a flexible light bar. The vehicle body exterior trimming assembly enables the outer surface of a vehicle body to obtain light-emitting elements, vehicle modeling is more scientific and technological, and appearance quality is improved. When the area of the light-emitting area is large or bright, the outline of the vehicle body can be presented, and convenience and sense of safety are improved. And a warning function can be obtained. The light source piece is a flexible light bar, so that the processing difficulty and the assembling difficulty are reduced; external stress can be easily absorbed, and the effects of vibration reduction and collision buffering are achieved; the light-emitting diode has the advantages of mature production process, low cost, good light-emitting stability, high reliability and long service life.

The invention discloses an unstructured environment motion planning method, device and equipment, and relates to the field of automation technology and vehicle engineering, and the method comprises the steps: inputting a to-be-tested unstructured environment pavement topographic image into a neural network model, determining the probability of any terrain type to which each pixel in the to-be-measured unstructured environment pavement topographic image belongs; adopting a Bayesian regression model to determine comprehensive passable risks under different road surfaces according to the probability of any terrain type to which each pixel belongs; an entropy risk measurement method is adopted to convert the comprehensive passable risks under different road surfaces into quantitative risks, and a passable map is generated; according to the trafficability map, determining trafficability parameters of the motion planner based on the cross entropy; according to the method, a motion planner based on cross entropy is utilized to perform motion planning on a vehicle in a to-be-detected unstructured environment according to the trafficability parameters, so that comprehensive probabilistic evaluation on terrain risks is realized, and the defects of uncertainty of terrain perception and terrain adaptability are overcome.

The invention relates to a vehicle running control method and device, a vehicle, a storage medium and a program product in the technical field of vehicle engineering.The method comprises the steps that in response to braking torque control of the vehicle in a driving running state, the wheel speed difference and the wheel acceleration of left and right wheels of the vehicle are obtained; according to the magnitude relation between the wheel speed difference and a plurality of speed difference threshold values and the magnitude relation between the wheel acceleration and a plurality of acceleration threshold values, target control states are determined, and each control state is calibrated with a corresponding braking force change strategy, a corresponding braking force change slope and a corresponding driving torque change strategy; and controlling the vehicle to run according to the braking force change strategy, the slope and the driving torque change strategy corresponding to the target control state. And the MTC does not excessively reduce the driving torque, so that the driving capability of the vehicle is enhanced.

The invention discloses a vehicle braking method, device and equipment and a storage medium, and belongs to the field of vehicle engineering. The method comprises the steps that first braking operation is received, and the first braking operation is used for controlling a hydraulic braking system to conduct hydraulic braking; according to the state of at least one component in the hydraulic braking system, the working state of the hydraulic braking system is determined; and according to the working state of the hydraulic braking system and the running state of the vehicle, an EPB is controlled to conduct linear braking. The method can ensure the driving safety.

The invention relates to the technical field of vehicle engineering, and particularly discloses a front windshield sunshade curtain and a commercial vehicle, the front windshield sunshade curtain comprises a rolling assembly, a guiding assembly and a supporting assembly, the rolling assembly is provided with a rolling shaft, the rolling shaft is used for rolling or unfolding sunshade cloth, the guiding assembly comprises a guiding rod and a sliding block, the sliding block is fixedly connected to the side edge of the sunshade cloth, and the supporting assembly is arranged on the guiding rod. The guide rod is parallel to the windshield glass and extends in the vertical direction of the windshield glass, one end of the supporting assembly is connected to the winding assembly, the other end of the supporting assembly is connected to the lower edge of the sunshade cloth, and the supporting assembly is attached to the sunshade cloth and can be folded along with winding of the sunshade cloth or unfolded along with unfolding of the sunshade cloth. When the sunshade cloth is unfolded, the supporting assemblies stretch along with unfolding of the sunshade cloth to provide reliable supporting for the sunshade cloth, the swing amplitude and frequency of the sunshade cloth in the vehicle driving process are greatly reduced, then the influence on the view of a driver is reduced, and driving safety is improved.

The invention discloses an intelligent cabin control method and related equipment, relates to the field of vehicle engineering, and mainly aims to solve the problem that an intelligent cabin of a current vehicle still depends on manual control too much. The method comprises the steps that multi-source sensing data of a vehicle are acquired, and the multi-source sensing data comprise driver information, passenger labels and event types; based on the multi-source perception data, calling a decision model to carry out branch processing so as to output audio configuration parameters, the audio configuration parameters including a volume level, an EQ parameter and a sound area switch; and packaging a control instruction based on the audio configuration parameter to control multimedia of the vehicle. The method is used for the intelligent cabin control process.

The utility model relates to the technical field of vehicle engineering, in particular to an automobile front cover lock which comprises a ratchet wheel, a pawl, a manual module and a suction module, the manual module comprises a manual pull rod and a manual shifting rod driven by the manual pull rod, the manual pull rod and the pawl are coaxial, the manual pull rod limits the pawl in a one-way mode, and when the front cover lock is unlocked, the ratchet wheel is driven by the manual shifting rod to rotate. The manual pull rod pulls the pawl through the limiting part so as to enable the pawl to release limiting of the ratchet wheel, the attraction module comprises an active attraction rod, when the front cover lock needs to be attracted, the active attraction rod is driven by the electric actuator to push the ratchet wheel, the pushed ratchet wheel enters the limiting of the pawl, and when the front cover lock is unlocked, the ratchet wheel is driven to move back and forth. When the manual pull rod pulls the pawl through the limiting part, the manual shifting rod is driven by the manual pull rod to push the driving suction rod aside, and therefore interference of the driving suction rod on the ratchet wheel is relieved. The technical problem that in the prior art, an automobile front cover lock cannot achieve the functions of electric opening, electric suction and manual release at the same time is solved.

The method is mainly applied to the technical field of vehicle engineering. The invention discloses a combined driving assistance vehicle driving control method, system and device and a medium. The method comprises the steps that running state information of a vehicle and traffic state information of the position where the vehicle is located are obtained; generating a driving path for guiding the vehicle to pass through the traffic signal prompt area according to the traffic state information, and determining the speed of the vehicle when the vehicle runs on the driving path; inputting the running state information and the vehicle speed into a preset energy consumption characteristic model, and determining the energy consumption of the vehicle when the vehicle runs on the running path through the energy consumption characteristic model; and generating a control instruction set based on the driving path, the vehicle speed and the energy consumption, and controlling the vehicle to execute driving operation according to the control instruction set. According to the invention, through the combined decision and the driving assistance control operation, the driving intelligence is obviously improved.

The invention belongs to the technical field of vehicle engineering, and particularly discloses a virtual compiling integration method, which is used for compiling and integrating a plurality of vehicle-mounted ECUs (Electronic Control Unit) and a plurality of controlled objects in the same software simulation framework for simulation, and comprises the following steps of: respectively generating FMU library files based on source codes of the vehicle-mounted ECUs and the controlled objects, the FMU library file further comprises an FMU library file of a stub function written for the first vehicle-mounted ECU to be tested; in the predefined software simulation framework, integrating and compiling the plurality of FMU library files into an executable file; a process is started, execution of the executable file is started, each FMU library file generates an independently running thread, and the threads are started in response to different triggering conditions. The method has the advantage that the compiling and running efficiency can be remarkably improved.

The invention discloses a control method of a vehicle stabilizer bar, and relates to the field of vehicle engineering. The control method comprises the steps that the current lateral acceleration of the vehicle is obtained; when the lateral acceleration is within the first range, it is determined that the vehicle is in a straight driving state, and at least one of road surface parameters and driving parameters of the vehicle is obtained, so that the gear of the stabilizer bar is adjusted; wherein the stabilizer bar is provided with at least two gears, the stabilizing action degrees of the stabilizer bar at different gears are different, and the stabilizing action degree of the stabilizer bar at the high gear is larger than that of the stabilizer bar at the low gear; and when the lateral acceleration is within the second range, it is determined that the vehicle is in the steering state, the stabilizer bar is shifted from the low gear to the high gear, and the gear shifting speed of the stabilizer bar is adjusted according to the lateral acceleration. According to the control method, it is guaranteed that under the different steering conditions of the vehicle, the stabilizing effect degrees of the stabilizer bar are different, and more detailed control over the road condition is achieved.

The invention discloses an air filtering system and method, and relates to the technical field of vehicle engineering.The air filtering system comprises an air inlet module, an air inlet flow control module, an air filtering module and a temperature detection module, and the air inlet module comprises a high-temperature air guiding pipe and a normal-temperature air guiding pipe; the normal-temperature air guide pipe is used for sucking normal-temperature air in the external environment; the high-temperature air guide pipe is used for sucking high-temperature air generated in an engine cabin; the air filtering module is used for filtering the mixed air; the filtered mixed air enters the engine; the temperature detection module is used for detecting the mixed air temperature of the mixed air; the air inlet flow control module is used for controlling the air flow proportion between the normal-temperature air and the high-temperature air sucked by the air inlet module according to the mixed air temperature so that the mixed air temperature can be within the standard temperature interval. The filtering effect of the air filtering module can be improved, the service life of the air filtering module can be prolonged, and the maintenance cost of the air filtering module is reduced.

The invention discloses a method, a device, equipment, a medium and a product for identifying abnormal driving energy consumption of a vehicle, and relates to the technical field of vehicle engineering.The method comprises the steps that target driving working condition data and target driving road condition data corresponding to a to-be-detected vehicle in a to-be-detected travel section are acquired; according to the target driving condition data and the target driving road condition data, clustering the to-be-detected travel segment, and determining a target cluster to which the to-be-detected travel segment belongs; and determining a target energy consumption baseline value corresponding to the target cluster, determining a to-be-detected energy consumption value generated by the to-be-detected vehicle in the to-be-detected travel section, and determining whether the to-be-detected vehicle has abnormal driving energy consumption in the to-be-detected travel section according to the target energy consumption baseline value and the to-be-detected energy consumption value. According to the method, the dynamic target energy consumption baseline value is used for identifying the abnormal driving energy consumption of the vehicle, and compared with the prior art that a single fixed energy consumption baseline value is used for identifying the abnormal driving energy consumption of the vehicle, the abnormal driving energy consumption identification accuracy is improved, and the phenomenon of misidentification is reduced.

The invention discloses a vehicle hydrogen fuel cell hydrogen-related safety management and control system and a control method thereof, and relates to the technical field of vehicle engineering. The hydrogen-related safety management and control system comprises a main box body, and a purging system and a hydrogen-related part are arranged in the main box body; a top exhaust port is formed in a top plate of the main box body, and side exhaust ports are formed in side plates of the main box body and used for air exchange between the main box body and the outside. In the purging system, a first purging part is arranged at a preset purging site below the hydrogen related part and can drive gas to flow upwards through purging, and a second purging part is arranged at the top in the main box and can drive gas to flow towards the side exhaust port through purging. The hydrogen-related safety management and control system can directly utilize running wind formed in the running process of the vehicle, passive ventilation is conducted at the top exhaust port and / or the side exhaust port, the purging part can guide hydrogen leaked by the hydrogen-related part to the top exhaust port and / or the side exhaust port in time, the risk that the hydrogen gathers in the box body is reduced, and the safety of the vehicle is improved. And the use safety of the hydrogen fuel cell system is improved.

The invention belongs to the technical field of vehicle engineering mode authentication, and particularly relates to a TEE-based vehicle engineering mode authentication method, system and device and a storage medium, and the method comprises the steps: obtaining pre-collected vehicle engineering mode request data, and generating a one-time password based on a vehicle VIN code contained in the request data; responding to the password input by the user side, generating a one-time password in the TEE, and comparing the one-time password with the input password to realize authentication of the vehicle engineering mode; and if the comparison result is consistent, entering a vehicle engineering mode, and executing a symmetric key updatable mechanism. Through the scheme, authentication of the vehicle engineering mode can be efficiently and safely completed, and safe access of engineering modes such as vehicle diagnosis, debugging, testing, development and parameter setting based on a trusted execution environment is realized, so that the overall safety and reliability of a vehicle system are improved.

This invention discloses a spoked wheel and a rail transit vehicle, relating to the field of vehicle engineering technology. The spoked wheel includes a rim, a hub, and multiple spokes; the hub is located at the center radially of the rim; all spokes constitute a spoke assembly, with the inner radial end of each spoke fixed to the outer circumferential surface of the hub and the outer radial end fixed to the inner circumferential surface of the rim; on the inner circumferential surface of the rim, the connection area of ​​the spoke assembly is located at the center axially, and annular mounting grooves are respectively provided on both sides of the connection area axially, in which noise-reducing damping rings are installed. Because the rim provides mounting space for noise-reducing damping rings axially on both sides of the connection area with the spoke assembly, noise-reducing damping rings can be installed to reduce noise, thereby improving the noise reduction capability of the spoked wheel.

The invention discloses a big data-based extended range generator load spectrum generation method, apparatus and device, and a storage medium, and relates to the technical field of vehicle engineering. The method comprises the following steps: remotely acquiring first big data and second big data of a plurality of extended-range generators through an OTA technology, and preprocessing the first big data and the second big data; determining various typical operation conditions according to the first big data and a preset threshold range; on the basis of the part damage model, the torque, the rotating speed and the part guarantee value of the typical operation conditions and a preset cycle number calculation model, calculating cycle test numbers of various typical operation conditions; determining target cooling water flow and temperature based on the distribution proportion of the cooling water flow and temperature; and generating the load spectrum of the extended range generator based on the cycle test times, the target cooling water parameters, the preset original load spectrum and the typical operation condition. According to the invention, accurate generation of the load spectrum of the extended range generator is realized through big data analysis, the test efficiency and reliability are improved, and the load spectrum better fits the actual use condition.

The invention belongs to the field of fault diagnosis in vehicle engineering, and relates to an automobile engine bearing fault diagnosis method based on multi-source heterogeneous data fusion, which is obtained by training a multi-source heterogeneous data training data set. The method comprises the steps of data acquisition and marking, construction of a multi-source heterogeneous data fused automobile engine bearing fault diagnosis model and set hyper-parameters, multi-head attention mechanisms in a Transform architecture are utilized to perform coupling noise reduction on multi-source heterogeneous data, meanwhile, a self-attention mechanism is utilized to pay attention to the part with the most serious noise in a sample, and the noise is reduced. And in cooperation with a SimAM mechanism, multi-source heterogeneous data coupling noise reduction and single-sensor information independent noise reduction are realized, and the noise reduction effect of the network is improved.

The invention discloses a holographic road surface state modeling and cloud sharing method and system based on an intelligent tire group, is suitable for feedforward control of an intelligent chassis of a vehicle, and belongs to the technical field of vehicle engineering.The method comprises the steps that an original signal output by an intelligent tire sensor, a vehicle motion state signal and a positioning signal are collected; calculating the collected data through a vehicle-mounted edge calculation unit to obtain road surface elevation value information, and uploading the road surface elevation value information to a cloud end; the cloud server receives and processes the data uploaded by the vehicle end, constructs a holographic road surface, responds to a request of the vehicle end, and issues corresponding road surface information; and the vehicle end sends a road surface demand, receives a road surface elevation value information data sequence issued by the cloud end, and assists the vehicle to carry out dynamic feed-forward control. The method provided by the invention can accurately collect road surface state information, break a single vehicle data island, realize road surface state information sharing, and assist the vehicle to carry out intelligent chassis feed-forward control.

The present invention relates to the field of vehicle engineering technology, and more specifically, to an integrated frame of a new energy vehicle and a new energy truck, comprising: a longitudinal beam, a battery frame, and a battery pack assembly, wherein the longitudinal beam comprises a front longitudinal beam, a middle longitudinal beam, and a rear longitudinal beam connected in sequence, the front longitudinal beam is used to bear the weight of the front part of the vehicle, the middle longitudinal beam is used to support the middle structure of the vehicle, and the rear longitudinal beam is used to support the rear part of the vehicle; the battery frame is arranged on the longitudinal beam, and the battery pack assembly is installed in the inner cavity of the battery frame. It aims to optimize the battery layout, improve the stability and balance of the whole vehicle structure, and solve the problems faced by the traditional frame structure and battery mounting scheme.

The invention discloses a front end energy absorption structure for a railway vehicle, and relates to the technical field of vehicle engineering. In the front end energy absorption structure for the railway vehicle, a car coupler mounting seat is arranged on the front side of a main body frame in the longitudinal direction and can be slidably connected to the main body frame in the longitudinal direction, and an energy absorption device and a car coupler guide device are both fixed between the car coupler mounting seat and the main body frame in the longitudinal direction; the car coupler mounting seat comprises a main seat body; the transverse middle part of the main seat body is a main connecting part which is thicker than the two sides; a center hole is longitudinally formed in the center of the main connecting part in a penetrating mode and communicated with a coupler guiding device, and the periphery, located on the center hole, of the main connecting part is used for being connected with a coupler assembly. The part, directly connected with the coupler assembly, of the main seat body is a high-stress area relative to other positions, the structural requirement for connection of the coupler assembly is met through the thick main connecting part, the other parts are subjected to weight reduction, and the lightweight effect of the front end energy absorption structure can be improved while the structural stability is guaranteed.

The utility model discloses a snow-proof device under a rail vehicle and a rail vehicle, and relates to the field of vehicle engineering technology. The snow-proof device under a rail vehicle comprises a bogie, a covering structure covering the bottom of the bogie, and equipment compartments respectively arranged at the front and rear ends of the bogie, the covering structure comprising a bottom plate arranged under the bogie, openings respectively arranged on the bottom plate below each wheel area of ​​the bogie to avoid the corresponding wheels; a snow-proof cavity opening downward is arranged on the bottom surface of each equipment compartment, and a plurality of snow-proof guide plates are provided under the bottom surface of the equipment compartment and / or below the bottom plate, and at least one snow-proof guide plate is located in front of all openings, and at least one snow-proof guide plate is located behind all openings. The snow-proof device can realize multi-stage combined snow-proofing, and resistance is provided by the snow-proof cavity and the snow-proof guide plate in turn, which can significantly reduce the degree of snow accumulation in the covering structure of the bogie area at the bottom of the vehicle, and realize snow-proofing more conveniently and reliably.