18 results about "Rotation test" patented technology

The invention discloses a self-aligning roller bearing rotation flexibility test data and assembly parameter correlation analysis method and a self-aligning roller bearing rotation flexibility test data and assembly parameter correlation analysis system. According to the method, bearing assembly parameters and multi-dimensional time sequence data of a rotation test are acquired through a system, and a quantitative correlation model between the bearing assembly parameters and the multi-dimensional time sequence data is constructed by using a machine learning algorithm. On the basis of the model, reverse analysis can be carried out on abnormal test data, and an assembly deviation source which causes poor flexibility is accurately positioned; target parameters can be input in the process design stage, and the expected performance of the bearing can be predicted in the forward direction. The corresponding system integrates a data acquisition module, a model analysis module, an application output module and a process feedback control module, and is integrated with a production line control system. According to the method, traditional qualitative judgment depending on experience is converted into quantitative analysis driven by data and models, intelligent closed loop from quality detection and root diagnosis to process optimization is achieved, and the consistency of bearing assembly quality and the intelligent level of process control are remarkably improved.

The embodiment of the invention discloses a rotation test method, system and device of a mobile robot and a server, and relates to the technical field of mobile robots. According to the specific implementation scheme, a task execution instruction is sent to the mobile robot, the task execution instruction is used for instructing the mobile robot to execute a test task, and the test task comprises rotation at a test position point according to a preset direction; obtaining rotation data collected by the distance measuring module when the mobile robot rotates at the test position point according to the preset direction; and obtaining a rotation performance index of the mobile robot based on the rotation data. In the scheme, by setting the test position point and the corresponding distance measurement baffle plate, the rotation performance of the mobile robot can be evaluated by using the rotation data acquired by the distance measurement module in the process that the mobile robot rotates at the test position point according to the preset direction, so that the accuracy of the rotation test of the mobile robot is improved.

The present invention belongs to the field of gas turbines, and aims to provide a gas turbine disk overspeed pre-rotation test method for both structural integrity assessment and service life extension. The method comprises the following steps: sequentially performing rotor assembly and dynamic balancing, rotor installation, an ambient-temperature trial run, temperature field calibration, a cold-state pre-rotation test and a hot-state pre-rotation test; and then performing test result validity analysis, and if criteria are met, stopping the process, and if the criteria are not met, repeating the process until the criteria are met, during which dynamic balancing criterion determination, installation criterion determination, vibration amplitude criterion determination, temperature field criterion determination, etc. are required to be performed respectively. The present invention can effectively extend the service life of disks, can reduce the production cost of the disks, and can also complete the structural integrity assessment of the disks.

The application discloses a distortion simulator outlet rotation test system, which comprises a rotating section assembly and a driving system, wherein the rotating section assembly comprises a harrow seat mounting cylinder and a bearing, and the bearing is fixed on the harrow seat mounting cylinder through a bearing mounting frame; the driving system comprises a linear module, a driving plate, a pull rod and a motor, one end of the driving plate is connected with the pull rod through a first pin shaft, the other end of the driving plate is connected with a slider of the linear module through a bolt, one end of the pull rod away from the driving plate is connected with a connecting piece fixedly arranged on the harrow seat mounting cylinder through a second pin shaft, and the motor drives the linear module to convert the linear motion of the slider into the circumferential motion of the harrow seat mounting cylinder, so that the rotation measurement is realized. The distortion simulator outlet rotation test system can convert the linear motion of the slider of the linear module into the circumferential motion of the harrow seat mounting cylinder to realize the rotation measurement, and can accurately measure the outlet flow field of the pressure distortion simulator.

The application aims to provide a normal-temperature overspeed pre-rotation test method for improving the service life of a gas turbine disc, belonging to the field of gas turbines, and comprising the following steps: sequentially performing rotor assembly and dynamic balancing, rotor installation, normal-temperature trial rotation, and normal-temperature pre-rotation test, finally performing test result effectiveness analysis, stopping if the test meets the test qualification standard requirement, and repeating the above steps and selecting a test rotation speed again for normal-temperature pre-rotation test if the test does not meet the test qualification standard requirement, during which dynamic balancing standard judgment, installation standard judgment, and vibration amplitude standard judgment are performed respectively. The application can effectively improve the service life of the disc and reduce the production cost of the disc.

The purpose of this invention is to provide a high-speed pre-rotation test method for gas turbine disks that simultaneously assesses structural integrity and improves service life. Belonging to the field of gas turbines, the method includes the following steps: sequentially performing rotor assembly and dynamic balancing, rotor installation, room temperature trial run, temperature field calibration, cold pre-rotation test, and hot pre-rotation test. Then, the validity of the experimental results is analyzed; if the standards are met, the test is stopped; if not, it is repeated until the standards are met. During this process, dynamic balancing standard judgment, installation standard judgment, vibration amplitude standard judgment, and temperature field standard judgment are performed respectively. This invention can effectively improve the service life of the disk, reduce the production cost of the disk, and simultaneously assess the structural integrity of the disk.

The invention provides an over-rotation tool for a turbine high-temperature over-rotation test. The over-rotation tool comprises a mandrel, a turbine, a small-end end cover, a large-end end cover, a pre-tightening assembly and a locking piece. The mandrel is connected with the over-rotating machine and the turbine and transmits torque; the turbine sleeves the second section of the mandrel, and the performance is tested; the small end cover and the large end cover are positioned, transmit torque and guarantee concentricity; the pre-tightening assembly compensates axial thermal deformation through an elastic piece, and the turbine is locked. And the pre-tightening assembly is fixed by the locking piece. Structurally, the turbine is in clearance fit with the mandrel, the key groove is matched with the key block, the elastic pieces are connected in series, and the end cover, the elastic pieces and the mandrel are made of the same material. According to the tool, the problems of an existing tool under the high-temperature and high-speed working condition are solved, the connection effect of a turbine under the high-temperature and over-rotation condition is improved, the stability and reliability of the tool are guaranteed, the torque transmission efficiency and the connection reliability are improved, stress concentration is reduced, and the universality and flexibility of the tool are improved.

The application aims to provide a cold state overspeed pre-rotation test method for gas turbine wheel disc structure integrity examination, belonging to the field of gas turbine, comprising the following steps: sequentially performing rotor assembly and dynamic balance, rotor installation, normal temperature test rotation, temperature field calibration, cold state pre-rotation test, finally performing test result effectiveness analysis to determine whether the wheel disc meets the structure integrity, during which dynamic balance standard judgment, installation standard judgment, vibration amplitude standard judgment and temperature field standard judgment are performed respectively. The application can detect internal defects without damaging the wheel disc, effectively improving the reliability of the wheel disc.

The present application relates to a kind of pedicle screw cap and fixed ring anti-rotation test device, including torsion testing machine (1), the torsion testing machine (1) is equipped with rotating three-jaw chuck (2) and fixed three-jaw chuck (3), still including profile bar (4) and fixing mechanism (5), one end of the profile bar (4) is clamped on the rotating three-jaw chuck (2), the other end is closely matched with the fixed ring (10) of the pedicle screw to be measured, the fixing mechanism (5) is clamped on the fixed three-jaw chuck (3), the cap (9) of the pedicle screw to be measured is fixed in the fixing mechanism (5) and the cap (9) is matched with the fixed ring (10), the fixed three-jaw chuck (3) is equipped with torque measuring sensor (6) and the rotating three-jaw chuck (2) is equipped with angular displacement sensor (7). It can realize the anti-rotation mechanics measurement of pedicle screw cap and fixed ring.

The invention relates to a rotor over-rotation test device for an engine. The rotor over-rotation test device comprises a bottom plate; the supporting assemblies are arranged at the top of the bottom plate at intervals, and each supporting assembly comprises a bearing frame and a mounting shaft rotationally mounted on the inner side of the bearing frame; the driving assembly is used for driving the mounting shaft to rotate forwards or backwards; the axial loading assembly is movably arranged on one side of the rotor and is used for applying axial force to the rotor; and the radial loading assembly is arranged at the top of the bottom plate and is used for applying radial force to the rotor. According to the rotor over-rotation test device for the engine, when the rotor is subjected to an over-rotation test, the driving assemblies on the two sides drive the rotor to rotate in the forward direction or in the reverse direction, during the period, axial loads are applied to the rotor through the axial loading assembly, and radial loads are applied to the rotor through the radial loading assembly; therefore, the complex stress environment of the rotor under the real working condition is simulated, and the reliability and stability of the test result are met.

The purpose of this invention is to provide a hot-state overspeed pre-rotation test method for improving the service life of gas turbine disks. Belonging to the field of gas turbines, the method includes the following steps: sequentially performing rotor assembly and dynamic balancing, rotor installation, room temperature trial rotation, temperature field calibration, and hot-state pre-rotation test. Finally, the validity of the test results is analyzed. If the dimensional requirements are met, the test is stopped; otherwise, the above steps are repeated, and a new test speed is selected. During this process, dynamic balancing standards, installation standards, vibration amplitude standards, and temperature field standards are judged respectively. This invention can effectively improve the service life of the disk and reduce its production cost.

The utility model discloses a spherical roller bearing rotation test device which comprises a bottom plate. The outer shaft fixing assembly is fixedly mounted at the top of the bottom plate; the outer surface of the bearing main body is detachably connected with the outer shaft fixing assembly; the rotation testing assembly is arranged at the top of the bottom plate, and the inner surface of the bearing body is detachably connected with the rotation testing assembly; the rotation testing assembly comprises a cross, a fixed cylinder, a sliding cylinder, a first motor, a lead screw, a connecting rod, a supporting frame, a connecting rod, a second supporting column and a second motor, one end of the fixed cylinder is fixedly connected with one side of the cross, the inner surface of the sliding cylinder is slidably connected with the outer surface of the fixed cylinder, and the first motor is installed at one end of the sliding cylinder. According to the scheme, the bottom plate, the outer shaft fixing assembly, the bearing body and the rotation testing assembly are arranged, through the structure, bearings with different radius sizes can be tested, and the application range of equipment is widened.

To provide a technology which can avoid a bearing from being damaged due to inertia rotation of a shaft in the case where power supply is stopped due to power outage and the like.SOLUTION: A lubricating oil supply device 6 which supplies a lubricating oil to a bearing includes: a supply part 61 for supplying a lubricating oil stored in a temporary storage part 611 which stores the lubricating oil temporarily to a bearing little by little together with compressed air; a lubricating oil supply passage 621 which is connected to the temporary storage part 611 at one end, and which is connected to a lubricating oil storage part 620 for storing the lubricating oil at the other end; a delivery part 622 which is provided at the lubricating oil supply passage 621, and which delivers the lubricating oil stored in the lubricating oil storage part 620 via the lubricating oil supply passage 621 and fills it in the temporary storage part 611; an air supply passage 631 which is connected to the supply part 61 at one end, and which is connected to a compressed air supply part 630 for supplying compressed air at the other end; and a pressure accumulation part 633 which is provided at the air supply passage 631, and for accumulating the compressed air.SELECTED DRAWING: Figure 3

The utility model provides an off-line simulation rotation testing device for a continuous casting roller, and belongs to the technical field of testing equipment. The two sets of supporting pieces and the two sets of supporting frame pieces are located on the working plane. The driving unit comprises a driving wheel, a gap is formed between the two sets of supporting pieces to form a containing space, the driving wheel is located in the containing space, and the position of the driving wheel in the vertical direction is adjustable; the driving wheel can be connected with the continuous casting roller sleeves on the two sets of supporting pieces in an abutting mode at the same time, and the two sets of continuous casting rollers are driven to rotate at the same time for synchronous testing. The device has the advantages that the driving wheels are allowed to be in contact with the continuous casting rollers on the two groups of supporting pieces at the same time and drive the continuous casting rollers to rotate, so that the test consistency and accuracy can be ensured, the performance of the same continuous casting rollers under different working conditions can be directly compared, and a basis is provided for optimization selection.

The application relates to the technical field of spacecraft ground testing and assembling equipment, and discloses a pin puller special for a vector adjusting mechanism for rotation test, which comprises a fixed support and a pin puller body arranged on the fixed support, the pin puller body is internally provided with a cavity, a synchronous driving assembly, a one-way locking assembly and an unlocking releasing assembly are integrated in the cavity, the synchronous driving assembly is used for converting opposite operation forces applied on two sides into synchronous inward movement of two moving rods, the synchronous driving assembly comprises a gear rotatably arranged in the middle part of the cavity, and a first rack and a second rack are respectively meshed and connected on the two sides of the gear. The operator can synchronously pull two locking pins, the inclination and the pin hole wedge jamming caused by the unilateral locking pin preferentially pulled out are avoided, when the operator releases hands or the gloves slip in the middle of operation, the locking pin is prevented from rebounding accidentally, and the safety in use is improved.

The invention relates to the technical field of battery pack testing, in particular to a universal rotation test support for a battery pack, which comprises a base frame, a first rotating shaft is rotatably connected to the base frame, a first rotating ring is fixed on the first rotating shaft, the axis of the first rotating shaft is perpendicular to the axis of the first rotating ring, and the axis of the first rotating ring is perpendicular to the axis of the second rotating ring. The end of the first rotating shaft is fixedly connected with the side face of a first rotating ring, a second rotating ring is coaxially and rotationally connected into the first rotating ring, a rotating gear is rotationally connected to the first rotating ring, and a rotating tooth groove meshed with the rotating gear is formed in the outer wall of the second rotating ring. The battery pack is installed in the second rotating ring, the second rotating ring can be driven through the rotating gear so as to drive the battery pack to rotate around the axis of the second rotating ring, the first rotating shaft rotates to drive the first rotating ring and the second rotating ring to rotate around the axis of the first rotating shaft, and therefore the angle and position of the battery pack are changed, and the number of rotating angles and dimensions of the battery pack is large. The requirements of various test working conditions can be met, and the use is convenient.

A method for evaluating machine learning potential energy surface feature engineering effect, comprising: generating feature engineering test data sets: rotation test data set, translation test data set, permutation test data set, sensitivity test data set and consistent continuity test data set; using feature engineering to calculate the output of each system in more than one of the five special test data sets of the feature engineering test data set, to perform result statistics and evaluate the feature engineering; statistics of evaluation results between different data sets in the feature engineering test data set, and give the overall evaluation of the feature engineering. The application strictly distinguishes equivalent structures and nonequivalent structures by considering the symmetry of the structure itself, and requires that the equivalent structures and nonequivalent structures are reflected in the output of the feature engineering, so as to ensure that the output information of the selected feature engineering method does not interfere with the fitting of the neural network model. The application can greatly improve the training accuracy of the machine learning potential energy surface model and reduce the calculation cost of network optimization.

The utility model discloses a rotation test device of a flap type rudder, which comprises a support, a central positioning clamp is arranged at the lower part of the support, a locking clamp is arranged at the upper part of the support, a rotating mechanism is arranged in the locking clamp, and the rotating mechanism comprises a connecting sleeve. A connecting shaft is arranged in the connecting sleeve through a tapered roller bearing and a deep groove ball bearing, the tapered roller bearing is fixed through a gland, and a tensioning assembly is arranged below the connecting shaft. The flap-type rudder rotating device is reasonable in structural design, the flap-type rudder can rotate around the axis of the flap-type rudder by utilizing the central positioning clamp at the lower part and the locking rotating mechanism at the upper part to verify the rotating flexibility among the main rudder, the auxiliary rudder and the rotating device of the flap-type rudder, and the flap-type rudder rotating device is convenient to operate and high in safety.