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156 results about "Automotive product" patented technology

Dynamic quality detection method for whole assembly of automobile products

InactiveCN103245513AEnsure the quality level of mechanical assemblyVehicle testingAutomotive productFrequency response
The invention relates to a dynamic quality detection method for whole assembly of automobile products. The method comprises the following steps: N assembly welding or bolt junction points between the chassis component and the automobile body component of the automobile product are selected as standard detection points, and the dynamic rigidity of the assembly coupling junction interface where the N detection points are located form a complex matrix (Kd); excitation test is performed on the positions of the standard detection points, the matrix element of a frequency response function of test signals is recorded, and a standard value (Kd)0 is calculated; excitation test is performed on the automobile products of the same model number, the evaluation index value (Kd)n of the nth detected automobile product is calculated, the absolute value of difference value between the evaluation index value (Kd)n and the standard value (Kd)0 is calculated according to the formula that delta = |(Kd)n - (Kd)0 |; and if the ith diagonal entry magnitude of the absolute value is smaller than a reference value, the dynamic quality of the ith welding of the automobile product is regarded as excellent, otherwise, the dynamic quality of the ith welding of the automobile product is regarded as poor or moderate-level. Through the dynamic quality detection method, the dynamic quality of the machine assembly of the automobile products can be directly detected and evaluated.
Owner:JINAN UNIVERSITY

Tinted spraying technology for automobile body

The invention discloses a tinted spraying technology of an automobile body. The tinted spraying technology comprises the steps of a procedure of pretreatment on the automobile body at an early stage, a procedure of floating coat and tinted finish spraying at a middle stage and a repair procedure at a later stage, wherein the 'tinted finish drying' procedure in the prior art is eliminated in the floating coat and tinted finish spraying procedure at the middle stage; the spraying of tinted finish is adjusted to be performed after 'the floating coat spraying' instead of after the 'finish drying' in the prior art; and the tinted finish as well as a floating coat film is changed into wet-to-wet spraying and is dried in a floating coat drying furnace, so that the procedure special for drying the tinted finish in the prior art is eliminated. According to the invention, on the premise of guaranteeing the long-term performance of weather resistance, gloss, distinctness of image, corrosion resistance and the like, and physical and chemical performance indexes to be equal to the automobile body performance indexes of the original spraying technology, the heating energy consumption and labor consumption of a coating and assembling line are saved, thereby achieving the aims of improving the coating and assembling production capability, lowering the manufacturing cost, and improving the market competitiveness of automobile products.
Owner:郑州日产汽车有限公司

A lexical vector-based emotion analysis method for automotive product reviews

The invention discloses a lexical vector-based emotion analysis method for automotive product reviews. The method comprises the following steps: acquiring automobile domain keyword database and preprocessing the original text to form text to be labeled; obtaining the automobile domain keyword database and preprocessing the automobile domain keyword database to form text to be labeled. For the sample to be marked, the sample is selected according to the time span standard and the vehicle type grade standard. Word2vec model is used to obtain the word vector of the text to be analyzed, and the high-dimensional sentence vector is obtained from the mean value of the word vector. PCA principal component analysis is used to reduce the dimension of high-dimensional sentence vector, and the reduceddimension sentence vector and the result of affective classification are used as feature training SVM classifier. The classifier is used to analyze the emotion of the new text, and the result of emotion analysis is generated. The invention is based on the automobile product knowledge ontology, pertinently builds the domain thesaurus, effectively labels the comment text in the domain, and obtainsmore accurate emotion analysis results by using the word vectorization and the machine learning model.
Owner:TIANJIN UNIV

Commercial vehicle mudguard support assembly test stand and endurance test method

InactiveCN106950053AEasy to buildQuick and easy fixture makingVehicle testingMachine part testingCircular discFender
The invention discloses a commercial vehicle fender bracket assembly test bench and a durability test method, which belong to the technical field of performance testing of automobile products, and include a linear actuator, a connecting fixture, a fender bracket and a fender assembly; Wherein, the connecting fixture includes a fixture bottom plate and a bracket connecting vertical plate, and the clamp bottom plate is used for connecting the fixture bottom plate with the top disc of the linear actuator; the bracket connecting vertical plate is connected with one end of the fender bracket; The other end of the fender bracket is fixedly connected with the fender assembly; the structure is simple and compact, has high versatility, saves time and high efficiency, is easy to process, and has high work efficiency. The durability test method described in the present invention aims at strengthening the road load spectrum signal in the test field, and can truly reproduce the vibration state and the vibration state in the vertical direction of the fender bracket assembly in the test room under the actual vehicle working condition by means of simulation iteration. In order to realize the durability performance assessment and test certification of the fender bracket assembly.
Owner:CHINA FIRST AUTOMOBILE

Imitation inner leather non-woven fabric and preparation method thereof

The invention discloses an imitation inner leather non-woven fabric and a preparation method thereof. The preparation method comprises the following steps of: (1) web processing: forming a preliminary web which comprises a fiber layer after opening, carding and spreading the raw materials, namely polyester fibers; (2) needling reinforcing: carrying out double-sided needling reinforcing on the fiber layer by utilizing a double-sided needling loom so that two strip-type needled fiber bundles with opposite directions are formed in the fiber layer; (3) impregnation: causing the reinforced web to enter an impregnation machine to be bonded with prepared thermal-sensing high wear-resistant emulsion resins through thermal coagulation; (4) drying: drying and setting the impregnated web to form a fabric; and (5) leather grinding: grinding the surfaces of the fabric obtained in the step (4) to be flat by utilizing a leather grinding machine to achieve real leather handfeel. The non-woven fabric and the preparation method have the following beneficial effects: environment maintenance can be improved by the preparation method; and the prepared non-woven fabric is very suitable for preparing sports goods and automotive product base materials which are required to have high wear resistance, uniform thickness and flat surfaces, not to fade and to be soft.
Owner:KUSN SHENGYU NON WOVEN FABRICS

Vehicle door opening and closing endurance test device

The invention relates to the field of vehicle product testing, and specifically discloses a vehicle door opening and closing endurance test device. The vehicle door opening and closing endurance testdevice comprises a base with a supporting rod, a power rotating device, a rotating arm, a buffer arm and a handle fixture. The power rotating device is installed at the top end of the supporting rod,a first end of the rotating arm is connected with a rotating shaft of the power rotating device, and the rotating arm is driven by the rotating shaft to rotate on a horizontal plane around the first end of the rotating arm; the buffer arm is provided with a buffer device and is located on the same horizontal plane as the rotating arm, the first end of the buffer arm is hinged to a second end of the rotating arm and can be rotated on the horizontal surface; and the handle fixture is used for performing an opening and closing action of a vehicle door, and the handle fixture is hinged to the buffer device and can be rotated on the horizontal surface. The vehicle door opening and closing endurance test device provided by the invention can improve the test effect by simulating the actual opening and closing of the vehicle door by a user, can also reduce the instant impact force when the vehicle door is opened and closed, reduces the damage to the vehicle door, and improves the operation stability of the endurance test.
Owner:GUANGZHOU AUTOMOBILE GROUP CO LTD

Material distribution system and method

The embodiment of the invention provides a material distribution system and a material distribution method, and relates to the field of automatic control. The problems in the prior art that the labor intensity of an operator is big and the material distribution efficiency is further low in a process of unloading a material car are solved. In the embodiment of the invention, an electric control device can control a separating device when a tractor is stopped, so that a connecting device is in a separation state, that is, the material car connected with the connecting device can be disengaged from the traction of the tractor; subsequently, the start of the tractor can be controlled, so that the tractor can continuously run after one material car is distributed to one appointed position, thereby entering a next appointed position to complete a next distribution process; as the whole distribution process is completed under the control of the electric control device, the manual interference is not needed; therefore, the labor intensity of the operator can be reduced; and the material distribution efficiency can be improved. According to the embodiment of the invention, the material distribution system and the material distribution method are mainly used for the distribution of automotive products.
Owner:长城汽车股份有限公司平湖分公司

Sales prediction method and system based on prophet model and big data

The invention relates to the technical field of big data mining, and provides an industry big data sales volume prediction method based on a Prophet algorithm for solving the problem of low prediction accuracy of an existing sales volume prediction method in the automobile industry, and the method comprises the steps: carrying out the analysis of holidays and festivals, events and the like on historical sales volume data based on a facebook prophet algorithm, determining influence parameters, adopting historical sales volume data to carry out training test on the proret model to obtain an optimal model, and predicting the sales volume to obtain a first predicted value; performing moving average, deformation, dimension reduction, lag and the like on the influence factors, performing machine learning model (neural network, xgboost and the like) training test by adopting historical sales volume data and all influence factor data to obtain an optimal machine learning model, and predicting the sales volume by utilizing the optimal machine learning model and a factor prediction value to obtain a second prediction value; and obtaining a final sales volume predicted value according to the sales volume predicted value I and the sales volume predicted value II. The method is suitable for predicting the sales volume of the automobile products.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Multi-connecting-rod pressing device

The invention relates to a multi-link pressing device, which includes a base and a connecting piece. The connecting piece includes a vertical part, an extension part and a bending part. A cylinder is installed on the left side of the lower part of the base, and the piston rod of the cylinder rotates with the lower end of the bending part. Connection, the upper end of the base is equipped with a fixed plate, the upper left side of the fixed plate is equipped with a rotating seat, the upper end of the rotating seat is rotationally connected with the middle part of the first connecting rod, the lower part of the right end of the first connecting rod is equipped with an upper cover, the left end of the rotating seat is connected with the vertical part The middle part is rotatably connected, the left end of the first connecting rod is rotatably connected to the first connecting plate, the lower end of the first connecting plate is rotatably connected to the upper end of the vertical part, and a mounting seat is installed on the right side of the upper end of the fixing plate, and a vertical slide vertical slide is installed in the middle of the mounting seat. Rod, the lower end of the vertical bar is rotatably connected with one end of the second connecting rod installed in the middle of the base, the other end of the second connecting rod is rotatably connected with a second connecting plate, and the upper end of the second connecting plate is rotatably connected with the lower end of the vertical part. The invention is suitable for the positioning and clamping of automobile round sleeve products.
Owner:NINGBO JINRUITAI SEIZURE

System performance evaluation method and device, computer equipment and storage medium

ActiveCN110955591AMeet predictive assessment needsFunctional testingSoftware testing/debuggingAutomotive productSimulation
The invention relates to a system performance evaluation method and device, computer equipment and a storage medium. The method comprises the steps of obtaining a test case passing rate of interface test data in a preset time period, wherein the test case passing rate is determined according to the test case passing amount of the interface test data, and the test case throughput is the test case throughput of the continuous test in the preset time period; generating an initial test curve according to the time sequence of the test case passing rate in the preset time period; performing curve optimization according to the curve fluctuation trend of the initial test curve to obtain a mean fluctuation curve, wherein the curve fluctuation trend is determined according to a difference value between a head-to-tail passing rate mean value and a middle passing rate in the initial test curve, wherein the mean fluctuation curve is used for evaluating whether the vehicle performance is stable or not. By adopting the method, a way for predicting and evaluating the performance of the vehicle machine can be provided, so that the prediction and evaluation requirements of users on the vehicle product quality trend or production risk are met.
Owner:文思海辉智科科技有限公司

Assembling mechanism for automobile products

The invention discloses an assembling mechanism for automobile products. The assembling mechanism comprises an operation table, a swing switching mechanism and a detection mechanism. A pressing plate station and feeding and discharging stations symmetrically distributed on the two sides of the pressing plate station are distributed above the operation table, and an arc guide groove is formed in the table top of the operation table. The swing switching mechanism comprises an arc guide block slidably mounted on the arc guide groove, two rotary positioning discs rotatably mounted on the arc guide block and a swing power assembly used for driving the arc guide block to slide along the arc guide groove. The two rotary positioning discs can alternately correspond to the pressing disc station and one of the feeding and discharging stations respectively in the process of swinging along with the arc guide block. The detection mechanism comprises a rotating shaft and a detection disc, a swing power assembly is connected with the rotating shaft, and the swing power assembly drives the arc guide block to enable the detection disc and a flexible flywheel subjected to press fit of a gear ring to be meshed with each other and rotate oppositely in the switching process of the two feeding and discharging stations. By means of the assembling mechanism for the automobile products, the assembling efficiency of automobile flywheels is improved.
Owner:JILIN DAHUA MACHINERY MANUFACTURING CO LTD

Power motor suspension structure for new energy automobile

The invention relates to the technical field of automobile product accessories, and concretely relates to a power motor suspension structure for a new energy automobile. The power motor suspension structure comprises a fixed table, movable fixing plates are arranged on the top surface of the fixed table, two first screw rods are in threaded connection with the interior of each movable fixing plate, the top of each first screw rod extends out of the fixed plate and is rotationally connected with a horizontal buckling plate, a vertical fixed baffle is fixed to the rear side of the top of the fixed table, a movable fixed assembly is arranged on the front side of the top of the fixed table, a movable assembly is arranged in an inner cavity of the fixed table, the movable assembly comprises a fixed plate moving mechanism and a buckling plate lifting mechanism, and a cooling fan is arranged in the inner cavity. The fixing plate moving mechanism is arranged, a first crank is rotated to drivea second screw to rotate, the second screw drives the two moving plates to move oppositely, and the two moving plates drive the first screws and the movable fixing plates to move, so that the positions of the two movable fixing plates are adjusted, and the left side and the right side of a driving motor are gradually clamped.
Owner:LANZHOU JIAOTONG UNIV

Automatic driving scene self-recognition method and storage medium

The invention relates to an automatic driving scene self-recognition method and a storage medium. The method comprises the steps of data acquisition and storage, data cleaning, events, scene recognition and point burying, data cutting, classification and label labeling, format conversion and data use. According to the invention, automatic identification and extraction, format conversion and labeled classified storage management are carried out on all collected whole vehicle network signals and sensor original signal data; a scene library established according to layering and classification of real vehicle data covers a natural traffic flow scene, an automatic driving failure working condition, driver takeover data, whole vehicle driving data, a working condition outside an operation area range, a traffic accident, traffic participant interaction data and man-machine interaction data. Big data support can be provided for automatic automobile product definition, function planning, demand analysis, software and hardware development, system integration, simulation and real automobile verification, function and performance rapid iteration updating, automatic driving standard regulation making and the like, and the utilization efficiency and the repeated utilization rate of data are improved.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD
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