23 results about "Dynamic load testing" patented technology

The invention provides a dual-redundancy R-EPS steering system electronic power unit performance detection device, and relates to the technical field of steering system testing. The control unit is in communication connection with the upper computer; the actuating mechanism comprises a programmable load motor, the control end of the actuating mechanism is connected with the control unit, and the output end of the actuating mechanism is connected with a motor output shaft of the tested electronic power unit; the sensing feedback module comprises a plurality of sensors used for collecting operation parameters of the tested electronic power unit, and each sensor is connected with the control unit; the fault simulation module is integrated in the control unit, and the output end of the fault simulation module is used for connecting a fault injection node of the tested electronic power unit; wherein the programmable load motor, the sensing feedback module and the fault simulation module form an integrated test system for performing dynamic load test and active fault injection test on the tested electronic power unit under the coordination of the control unit. High integration and automation of the detection process can be realized, and the test efficiency and consistency are improved.

This invention relates to the field of wind tunnel aerodynamic measurement technology for hypersonic vehicles, and discloses a method for evaluating and optimizing the dynamic load testing accuracy of a wind tunnel force measurement system. The evaluation method involves: equating the force measurement system to a multi-degree-of-freedom spring and mass model; constructing a dynamic differential equation and performing a Laplace transform; then, combining the dynamic stiffness matrix to construct a frequency response function matrix; defining the output of the force measurement channel of a rod-type strain balance and solving for the transfer function from the excitation point to the force measurement channel; combining the reference transfer function and the actual load, calculating the identified load and performing a Fourier transform to obtain the relative identification error of the force measurement system at the excitation point; finally, calculating the power spectrum weighted average identification error at the excitation point and comparing it with the engineering allowable error to determine whether the system has undergone stiffness optimization. This invention not only accurately identifies the dynamic load of the force measurement system but also achieves stiffness optimization, improving the accuracy of unsteady aerodynamic force measurement.

The invention provides a dynamic load testing method and device, electronic equipment, a medium and a program product, and can be widely applied to the technical field of testing. According to the method, the access state of the tested object is simulated through the test tool according to the target test parameter, and after the first performance index in the access process is received and collected, the target test parameter and the first performance index are input into the preset machine learning model to perform load test analysis on the tested object; therefore, the test process of all the load parameters needing to be tested can be completed without continuously manually adjusting the tested load parameters, the workload of manual adjustment and interference factors introduced in the manual adjustment process are reduced, and the test accuracy is effectively improved.

An aircraft structure dynamic loading testing device, including a nozzle, an attachment mechanism with a first portion attached to the nozzle such that a nozzle force direction is constrained at a set orientation and a second portion for attaching to the aircraft structure and configured to be constrained at a given orientation with respect to the aircraft structure, and a length of conduit. In use, fluid is supplied along the length of conduit to the nozzle and ejected from the nozzle such that the nozzle exerts a dynamic force on the aircraft structure in the direction of the nozzle force direction. A dynamic loading testing device, a kit of parts and methods of dynamic load testing of a structure are disclosed.

The invention belongs to the technical field of bearing detection, and provides a bearing detection table dynamic load test device for vehicle production, which comprises a detection table, the detection table is fixedly connected with a support frame, the upper end surface of the support frame is fixedly connected with a motor, and an elastic assembly for damping the motor is arranged between the motor and the support frame. An output shaft of the motor is fixedly connected with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected with a sleeve, and a limiting mechanism used for positioning the electric telescopic rod is arranged outside the electric telescopic rod. According to the invention, the regulation and control system can position and adjust the motor by controlling the elastic assembly, the limiting mechanism, the positioning assembly, the suction assembly and the water circulation system, and meanwhile, the regulation and control system adjusts the connection stability between the electric telescopic rod and the thin-wall bearing.

The application discloses a multi-axle rock dynamic and static load testing machine, relates to basalt fiber new material rock detection, and comprises a testing machine body and a testing platform fixedly installed at the middle part of the testing machine body; a dynamic load assembly is arranged above the testing machine body, and the dynamic load assembly comprises a dynamic pressure applicator; wherein the dynamic pressure applicator carries out dynamic load testing on the fiber new material rock of the testing platform surface through adjustable speed impact and vibration; static load assemblies are arranged on the front and back sides of the testing machine body, and the static load assemblies comprise static pressure applicators; wherein the static pressure applicators move at a uniform speed. The multi-axle rock dynamic and static load testing machine processes multiple testing surfaces of new material rocks through a positioning mechanism and a dust removal mechanism, avoids damage of rock particles to stress points, simultaneously carries out testing and detection on new material rocks through dynamic and static load testing in a staggered distribution mode, and improves data accuracy and testing efficiency.

The utility model discloses a dead pet carcass sealing bag bearing strength inspection device, which comprises a detector main body, the bottom of the detector main body is provided with a bag shaking mechanism, the detector main body comprises a base, a support rod, an equipment box, a tension sensor, a hook and a controller, the support rod is fixedly arranged on the upper end face of the base, and the equipment box is arranged on the upper end face of the base. The equipment box is fixedly installed at the top of the supporting rod, the tension sensor is installed at the lower end of the equipment box, the hook is fixedly installed at the lower end of the tension sensor, and the controller is installed on the equipment box; the rotating shaft is fixedly installed on an output shaft of the gear motor. The device has the advantages of static and dynamic load testing and multiple safety protection, and solves the problems that only static testing can be carried out, operation is inconvenient and safety protection measures are lacked in a traditional detection method.

This invention relates to the field of coal mine roadway support technology, and provides a laboratory dynamic load evaluation method for the rock control effect of sprayed support materials in coal mines. The method includes: acquiring a first set of mechanical response data and a second set of mechanical response data under dynamic load testing, wherein the first set of mechanical response data originates from rock samples treated with sprayed support materials, and the second set of mechanical response data originates from rock samples not treated with sprayed support materials; calculating multiple physical and mechanical evaluation indices based on the first and second sets of mechanical response data; and determining a comprehensive evaluation level to characterize the rock control effect of sprayed support materials in coal mines based on the multiple physical and mechanical evaluation indices and a trained comprehensive evaluation model. This invention solves the problem that existing static testing methods are insufficient to effectively evaluate the rock control effect of sprayed support structures under dynamic loads, thus achieving a scientific evaluation of the rock control effect of sprayed support materials.

This invention relates to the technical field of inverter testing systems, and particularly to a full-scenario energy feedback inverter testing system, comprising a scenario simulation unit, an energy feedback inverter testing platform unit, a data acquisition unit, a control unit, a data analysis unit, and a comparison unit. The scenario simulation unit includes a load simulation module, an environment simulation module, and a power grid simulation module. The load simulation module uses mechanical equipment to simulate various loads of different sizes on a motor under different operating conditions, enabling dynamic load testing of the inverter. The environment simulation module, through the setting of an environmental simulation chamber, precisely controls environmental parameters such as temperature, air pressure, and vibration intensity within the chamber to test the inverter's starting performance and the reliability of its components. It comprehensively simulates various complex operating conditions, accurately tests the inverter's performance under different conditions, provides rich data for subsequent analysis, and provides a strong basis for product optimization and selection, thereby comprehensively improving the level of inverter R&D, production, and application.

The invention discloses a multi-axis rock dynamic and static load testing machine, and relates to basalt fiber new material rock detection, the multi-axis rock dynamic and static load testing machine comprises a testing machine body and a testing platform fixedly mounted in the middle of the testing machine body; a dynamic load assembly is arranged above the testing machine body, and the dynamic load assembly comprises a dynamic pressure applying device; wherein the dynamic pressure applying device is used for carrying out a dynamic load test on the fiber new material rock on the surface of the test platform through speed-adjustable impact and vibration needles; static load assemblies are arranged on the front side and the rear side of the testing machine body, and each static load assembly comprises a static pressure applying device; wherein the static pressure exerting device moves oppositely at a constant speed. According to the multi-axis rock dynamic and static load testing machine, a plurality of test surfaces of new material rocks are treated through the positioning mechanism and the dust removal mechanism, the situation that stress points are damaged by rock particles is avoided, meanwhile, test detection is conducted on the new material rocks through staggered dynamic and static load tests, and the data accuracy and the test efficiency are improved.

The invention belongs to the technical field of intelligent manufacturing, and relates to a seamless integrated forming method for silica gel nodes and soles, which comprises the following steps: extracting data of a joint interface of the nodes and the soles from a sole prototype, evaluating the continuity of the joint interface by adopting an image analysis technology, judging a bonding strength index; if the bonding strength index is lower than a preset threshold value, the structure of the sole prototype is corrected through a hot-pressing fusion technology, and an enhanced sole assembly is obtained; performing a dynamic load test according to the enhanced sole assembly, simulating a motion scene by the test to obtain a stress distribution data set, and determining the overall stability level of the sole assembly; the overall stability level is compared with a preset standard, if the overall stability level meets the requirement, a final product is manufactured through a batch production process, and the sneaker sole meeting the precise layout is obtained.

The utility model relates to the technical field of load testing, and discloses a dynamic load testing device, which comprises a fixed bottom plate, the top of the fixed bottom plate is fixedly connected with a mounting frame, the top of the fixed bottom plate is provided with a protection assembly, the top of the fixed bottom plate is fixedly connected with a limiting column, and the limiting column is provided with a clamping groove. A hydraulic rod is fixedly connected to the top of the inner wall of the mounting frame, an extrusion plate is fixedly connected to the output end of the hydraulic rod, a pressure sensor is fixedly connected to the inner wall of the fixed bottom plate, and a placement plate is fixedly connected to the top of the pressure sensor. The motor drives the driven gear to rotate, so that the driving gear rotates, the lead screw is driven to rotate, the threaded seat moves downwards, the sleeve and the fixed block are driven to move, the transparent protective cover moves downwards to shield a test area, and a closed test environment is formed. The dangerous conditions such as fragment splashing caused by extrusion damage of an object in the testing process are avoided, and the safety in use is improved.

The utility model belongs to children's article safety detection equipment field especially relates to a baby carrier dynamic load testing testing machine, including support platform, support shell, connecting seat, manikin and screw rod etc.

The invention discloses a motor bearing dynamic load testing device based on double-shaft coupling, relates to the technical field of bearing testing, and is obviously different from a conventional bearing load testing mode in that a semi-linkage structure is formed by a power output shaft, a joint shaft and a power detection shaft, so that the acquisition process of subsequent rotation parameters is facilitated; through cooperative work of the first sliding table, the second sliding table and the third sliding table, the dynamic load of the motor bearing is accurately tested, power output and detection are more flexible through the design of a semi-linkage structure, response characteristics of the motor bearing under different load conditions are accurately captured, and through arrangement of multiple detection assemblies and an axial polarization detection assembly, the detection accuracy is improved. The test comprehensiveness and accuracy are further improved, the working states of the motor bearing in different action environments are simulated through active interference of the pulse action assembly on the ball head rod, powerful support is provided for performance evaluation and optimization of the motor bearing, and the accuracy of test data in the test process is improved.

The application discloses a motor bearing dynamic load testing device based on double-shaft coupling and relates to the technical field of bearing testing. The device is obviously different from the conventional bearing load testing mode in that a semi-linkage structure is formed by a power output shaft, a joint shaft and a power detection shaft, the semi-linkage structure is convenient for the acquisition process of subsequent rotation parameters, the accurate testing of the dynamic load of the motor bearing is realized through the cooperative work of a first sliding table, a second sliding table and a third sliding table, the design of the semi-linkage structure makes the power output and detection more flexible, the response characteristics of the motor bearing under different load conditions are accurately captured, the setting of multiple detection components and an axial polarization detection component further improves the comprehensiveness and accuracy of the testing, the active intervention of a pulse action component on a ball head rod simulates the working state of the motor bearing in different action environments, the pulse action component provides strong support for the performance evaluation and optimization of the motor bearing, and the accuracy of the testing data in the testing process is improved.

The application relates to the technical field of testing of high-pressure hydrogen transmission pipelines for ships, in particular to a pipeline joint sealing property testing device under hydrogen medium environment and vibration load conditions. The application provides a pipeline joint sealing property testing device under hydrogen medium environment and vibration load conditions, which comprises a shell, a fixing assembly, a gas supply assembly, a vibration loading assembly and a testing unit, the shell is provided with a first wall; the fixing assembly is arranged in the shell and connected with the first wall, and the fixing assembly is used for fixing a joint assembly; the gas supply assembly is selectively communicated with the joint assembly, so as to inject gas with a set pressure into the joint assembly; the vibration loading assembly is arranged on the first wall, so as to apply vibration load to the joint assembly; and the testing unit is arranged in the shell, so as to detect the gas amount in the shell. The sealing property of a single joint assembly can be tested, and the test cost and process complexity are reduced. The device can simulate a real service environment, has strong adaptability, high universality and high test precision.

The application discloses a dynamic load test method and system of a short message communication system, and relates to data processing technology, which comprises the following steps: dividing a plurality of priority categories in advance for data messages; obtaining data messages under a plurality of historical emergency scenarios and classifying them according to the priority categories; clock aligning the classified data messages of each secondary node and selecting data message samples of a typical time period; extracting message features of each data message of any typical time period, assigning weights to the corresponding message features according to the priority of each data message, and constructing a dynamic load generator by using LSTM; extracting message features under a current emergency scenario and inputting them into the dynamic load generator; and comparing the output of the dynamic load generator with the load condition of the current communication system to complete dynamic load testing. The method of the application is used for dynamically allocating channel resources according to the result of dynamic load testing and exposing potential resource bottlenecks of the system in advance.

The invention discloses an anchor clamping piece performance and lifter oil cylinder pressure maintaining detection system and method, and belongs to the technical field of hydraulic synchronous lifting equipment detection. The system comprises a static and dynamic performance testing device, a dynamic load performance testing device, a pressure accessory system and a detection assembly, the pressure accessory system provides hydraulic power for the static and dynamic performance testing device and the dynamic load performance testing device, the static and dynamic performance testing device achieves static and dynamic performance detection of the anchor clamping piece, and the dynamic load performance testing device simulates dynamic load working condition detection. The detection assembly comprises multiple types of sensors, imaging and microscopic detection equipment and a data acquisition system, and multi-dimensional data acquisition is realized; the method comprises three detection links including a static detection link, a dynamic detection link and a dynamic load detection link, the performance of the anchor clamping piece under different working conditions is detected respectively, meanwhile, the pressure maintaining performance of the lifter oil cylinder is detected synchronously, and the performance of the anchor clamping piece and the pressure maintaining performance of the lifter oil cylinder are evaluated by combining detection data. The method fits the actual working condition of engineering, realizes multi-scene accurate detection, replaces experience judgment, and improves the detection efficiency.

This invention discloses a planar explosive loading method for dynamic load testing of protective equipment, belonging to the technical field of dynamic load testing of protective equipment. The method includes the following steps: S1: At least one layer of fixed structures is arranged parallel to each other in a test tunnel in front of the protective equipment; S2: Detonating cords are arranged in a reciprocating pattern on each layer of fixed structures, and the detonating cords between adjacent fixed structures are connected end-to-end by overlapping clips to form a multi-layered mesh structure; S3: At least one end of the multi-layered mesh structure is connected to an initiating element. This invention extends the positive pressure application time by changing the number of layers of the fixed structures, the winding spacing D of a single layer of detonating cord 6, or the layer spacing S between adjacent fixed structures, thereby forming a quasi-static or slowly changing dynamic loading that more closely resembles actual combat conditions, thus improving the reliability of the safety performance evaluation of the protective equipment.

The utility model discloses an airplane body bearing radial dynamic load testing machine, comprising a test bench, the test bench is provided with a tool sleeve and a core shaft matched with the tool sleeve, the tool sleeve is provided with a tool hole for the core shaft to pass through, and the tool hole is provided with a tool hole for the core shaft to pass through. A test cavity for mounting and accommodating an external to-be-tested bearing is formed between the inner peripheral wall of the tool hole and the outer peripheral wall of the mandrel; the test bench is provided with a driving member used for driving the mandrel to axially rotate so as to drive the bearing to be tested to operate, a loading member used for applying a radial load to the tool sleeve so as to apply the radial load to the bearing to be tested, and a detection assembly used for being in linkage cooperation with the loading member so as to detect the load amount and the displacement amount of the bearing to be tested during operation. The utility model solves the problem that the prior art lacks a multifunctional testing machine for airplane body bearings, which is used for carrying out multidirectional tests on airplane body bearings and simulating bearing operation industrial control.

This invention relates to the field of marine mechanical vibration testing, specifically disclosing a device and method for simulating the dynamic load environment of a ship's propulsion shafting in ice-covered conditions. The device includes an ice-water load environment simulation unit and a dynamic load testing platform. The ice-water load environment simulation unit is equipped with a constant-zero-degree water tank containing an ice-water mixture, and a propeller shaft with one end extending into the water tank and the other end fitted with a propeller test model, used to simulate the ice-water mixed medium environment. The dynamic load testing platform is connected to the other end of the propeller shaft, and its function is to provide driving force for the propeller test model and simultaneously monitor the torque, speed, and vibration parameters of the propeller shaft during operation. This device can simulate the real load conditions of a ship's propulsion shafting in an ice-water mixed environment. It creates an ice-covered environment through the constant-zero-degree water tank and utilizes the dynamic load testing platform, which integrates a drive motor, sensors, and centering adjustment device, to monitor key parameters of the shafting such as torque, speed, vibration, and displacement in real time.

This invention relates to the field of marine mechanical testing technology, and discloses a dynamic load testing platform for a ship propulsion shaft system used to simulate an ice-covered environment. The platform includes: a base platform on which a drive motor, a first coupling, and a reducer are sequentially connected. The output end of the reducer is connected to one end of the propulsion shaft, and the other end of the propulsion shaft is connected to a propeller. The propeller is placed in an ice-covered environment simulation load module, which is used to simulate a marine ice-covered environment. The propulsion shaft is connected to a torque sensor, a speed measuring device, a vibration measuring device, and a displacement sensor. This invention can simulate a marine ice-covered environment and measure the parameters of the propulsion shaft using the torque sensor, speed measuring device, vibration measuring device, and displacement sensor. This allows for analysis of the structural vibration response and shaft center trajectory of the propulsion shaft under propeller shaft excitation, providing data support for the safety assessment and condition monitoring capabilities of ship propulsion systems in ice-covered environments.