9 results about "Curb weight" patented technology

A method for establishing a protection level system of a roadside guardrail of an off-highway tour sightseeing vehicle relates to a public traffic safety technology, establishes a collision energy calculation model based on vehicle actual parameters and limit operation conditions, and divides a protection level accurately matched with vehicle risks so as to effectively improve the operation safety level of the sightseeing vehicle. The method for establishing the protection level system comprises the following steps of: acquiring key technical parameters of a large number of in-use sightseeing vehicles in a target area, at least including rated passenger number, curb mass and maximum running speed; performing statistical analysis on the collected servicing quality data of each vehicle type, and determining a 90th percentage value P90 as representative quality of the vehicle type; establishing a physical model for calculating the collision energy of the sightseeing vehicle, wherein the input parameters comprise the calculation mass, the collision speed and the collision angle; and according to the calculated collision energy range of the main vehicle model, establishing and dividing special off-highway sightseeing vehicle guardrail protection levels T1, T2, T3 and T4.

The invention provides a coal quality supervision method and system based on big data and infrared measurement. The method comprises the following steps: establishing and storing carriage size data and empty vehicle weight data of a coal transport vehicle to a database; after the vehicle is loaded with coal, scanning the coal pile in the carriage through an infrared three-dimensional scanner to obtain surface contour data of the coal pile; calculating the loading volume of the coal pile according to the carriage size data and the surface contour data of the coal pile; the total weight of the vehicles is obtained through the truck scale, and the net weight of the coal is calculated by combining the corresponding empty vehicle weight in the database; calculating the real-time density of the currently transported coal according to the net weight and the loading volume of the coal; calling a historical density weighted average value of the same batch of the current coal from a big data platform; and comparing the real-time density with the weighted average value of the historical density, and if the deviation exceeds a preset threshold value, triggering coal quality abnormity early warning. The efficiency and accuracy of coal quality supervision are effectively improved.

This invention discloses a pure electric vehicle simulation design method, apparatus, and storage medium, comprising: acquiring pure electric vehicle-level performance target request data, wherein the pure electric vehicle-level performance target request data includes at least vehicle positioning information and core performance indicators, the core performance indicators including at least: range, power performance, curb weight, and thermal safety; determining a virtual pure electric vehicle model based on the pure electric vehicle-level performance target request data; determining target pure electric vehicle configuration data based on the virtual pure electric vehicle model through a multi-physics co-simulation toolchain, the target pure electric vehicle configuration data including at least: a target pure electric vehicle 3D model and a standardized bill of materials; and determining the target structure of the pure electric vehicle based on the target pure electric vehicle configuration data. This invention at least solves the technical problems of severe data silos and low iteration efficiency in the existing vehicle-driven development model.

This invention discloses an individual curb weight assessment method for highway freight trucks, relating to the field of highway management. The method involves: extracting passage records for a specified time period from the highway weighing system using the vehicle's unique identifier as the key; cleaning and filtering the data to form an individual vehicle load history dataset; performing multimodality assessment, variability analysis, and gap clarity assessment on each individual dataset to obtain multimodality score, variability score, and gap clarity score, and then weighting them to obtain a weighted TDS (Total Dispersion Scale) comprehensive differentiation score; comparing the TDS comprehensive differentiation score with a preset threshold to select suitable vehicles for clustering; performing adaptive parameter clustering on suitable vehicles to obtain different load state clusters; calibrating the empty load state clusters and using the median of all data points in the empty load state cluster as the vehicle's curb weight assessment value; and combining the curb weight assessment value of each vehicle with the data from all load state clusters to generate an individualized load pattern profile. This invention achieves high-precision identification of vehicle curb weight.

The invention belongs to the technical field of automobile engineering, and discloses a new energy automobile collision safety test device, which comprises a platform and a tractor, and further comprises a release mechanism mounted on the outer wall of the top end of the tractor; the speed reducing mechanism is arranged on the outer wall of the platform; the invention further provides a test method of the new energy vehicle collision safety test device, and the method comprises the following steps: S1, deploying a test vehicle to the curb mass required by the design through a counterweight sandbag or an equivalent weight; through cooperation of structures such as the tractor and the plug pin, the tractor can pull the test vehicle to move leftwards on the platform, and after front wheels of the test vehicle make contact with the scraping beam, the test vehicle is automatically separated from the drag chain through the release mechanism, so that the test vehicle continues to move under the inertia effect until the battery pack makes contact with the scraping beam in a colliding mode; the safety verification method for the battery pack when the battery pack scrapes and collides the steps is achieved, and the problem from the standard theory to the actual verification is solved.

This application relates to the field of windshield wiper installation technology and discloses a vehicle. The vehicle provided by this application includes a windshield, a body, and a wiper assembly. The body has a windshield mounting structure, a front wheel arch reinforcement, and a shock absorber tower. The windshield mounting structure is used to mount the windshield and has a first connecting portion. The front wheel arch reinforcement is connected to the front wheel arch and extends longitudinally along the body, and has a second connecting portion. The wiper assembly includes a first wiper, a second wiper, and a connecting structure. The connecting structure is located between the first and second wipers, and both the first and second wipers are in contact with the windshield and can rotate relative to the connecting structure. The connecting structure has a main mounting portion, a secondary mounting portion, and a fixing portion. The main mounting portion is connected to the first connecting portion, the secondary mounting portion is connected to the second connecting portion, and the fixing portion is connected to the shock absorber tower. The vehicle of this application embodiment improves the installation accuracy of the wiper assembly and reduces the vehicle's curb weight.

The application discloses a rapid urea quality identification method based on urea physical properties, comprising: establishing a vehicle file and a basic database; collecting tank truck factory data, including: after the tank truck loaded with urea enters an acceptance area, collecting the empty truck weight and the total weight of the full load through a weighing device, synchronously reading the tank truck license plate number, calling the basic data corresponding to the license plate number in the database, and the basic data corresponding to the license plate number in the database including the tank truck effective volume, a historical empty truck weight data set and a historical filling coefficient data set; identifying and alarming the empty truck weight abnormal value, including: adopting a box line chart method to perform abnormal value screening on the real-time empty truck weight, judging whether the real-time empty truck weight is in a reasonable interval; calculating a urea filling coefficient; performing abnormal value identification and hierarchical early warning on the urea filling coefficient; performing database dynamic iteration updating and closed loop management and control on the abnormal vehicle. The application also discloses a system, a device, electronic equipment and a computer readable storage medium.

The invention provides a vehicle collision energy absorption structure and a vehicle, and is applied to the field of vehicle energy absorption. The vehicle collision energy absorption structure comprises a vehicle body rear structure, the vehicle body rear structure comprises a die-casting rear floor and a longitudinal beam rear section which are sequentially arranged in the front-back direction of a vehicle, the longitudinal beam rear section is made of an energy absorption structure, and when the rear portion of the vehicle is collided, the vehicle body rear structure absorbs collision energy through collapse of the longitudinal beam rear section; the length of the longitudinal beam rear section is different, and collision energy absorbed by collapse is different; the target length of the longitudinal beam rear section is in positive correlation with the curb mass of the vehicle. According to the vehicle collision energy absorption structure, actual collision energy needing to be absorbed by the vehicle when the rear portion of the vehicle is collided can be exactly absorbed, and the problem that the energy absorption capacity of the vehicle collision energy absorption structure is excessive or insufficient is solved.

The application provides a vehicle axle load calculation method and device, electronic equipment and storage medium. The method comprises the following steps: in response to a vehicle axle load evaluation request initiated by a target user in a vehicle axle load evaluation interface, obtaining the number of seats in each row, the curb weight, the wheelbase, the front axle load ratio in the curb state and the position information of the target passenger vehicle input by the target user in the vehicle axle load evaluation interface; calculating the rear axle load data according to the curb weight, the wheelbase, the front axle load ratio in the curb state and the position information of the target passenger vehicle. The number of seats in each row of the target passenger vehicle is used to determine all load conditions of the target passenger vehicle; the vehicle load under each load condition is calculated according to the curb weight, the rear axle load data, the number of passengers in each row of seats in each load condition and the number of luggage. Through the method of the application, the vehicle load under multiple load conditions can be calculated.