6results about How to "Uniform displacement" patented technology

This invention provides a method, device, storage medium, and electronic product for outputting kinematic parameters. The method includes: establishing a digital human finite element model; constructing an output component composed of mesh elements; configuring the output component in the femoral condyle region and the tibial plateau region respectively; associating the master node with shared nodes in the motion control area by calculating the displacement of the master node; defining kinematic parameters related to the knee joint injury mechanism based on the finite element node displacements in the kinematic output area; and obtaining the coordinates of finite element feature points before and after the collision through finite element simulation to calculate the kinematic parameters. The beneficial effects of this invention are that it focuses on parameters related to knee joint injury, breaking through the limitations of traditional methods that rely solely on macroscopic indicators, providing targeted support for injury mechanism analysis and injury severity prediction, and contributing to vehicle structure optimization and pedestrian protection development.

The invention discloses a quick plug type change-over switch, which comprises a plurality of contact boxes arranged in an array along the vertical direction, a panel frame positioned at the top of the uppermost contact box, a rotating shaft inserted in the panel frame and the plurality of contact boxes, and a handle fixedly positioned at the top of the rotating shaft, each group of contact box comprises a base, two groups of moving contact assemblies and static contact assemblies respectively positioned at four corners of the base, and the two groups of moving contact assemblies are respectively positioned at the middle position of the left side and the middle position of the right side in the base; the cross section of the base is square, four corners of the bottom of the base are respectively provided with a first square slot, the four static contact assemblies are respectively inserted into the four first square slots, the middle positions of the left side and the right side of the bottom of the base are respectively provided with a first square chute, and the two groups of moving contact assemblies are respectively inserted into the first square chutes in a sliding manner. The invention has the advantages of clear division of labor, quick installation, arc extinguishing, convenience in assembly, reduction of damage cost, convenience in maintenance and low maintenance cost.

The application discloses a method for combination huff and puff and production allocation of heavy oil reservoirs, and is based on the optimal liquid discharge intensity IL of an oil well under the plane homogeneity condition of the concept model of the one-injection and same-production well group, considers the static condition difference and the dynamic difference after the single well huff and puff for multiple rounds, and obtains the reasonable liquid allocation of each oil well in the one-injection and same-production well group after correction by using the dimensionless permeability, the crude oil viscosity, the injection pressure difference, the well spacing and other correction coefficients, thereby modifying the existing liquid allocation method and realizing the optimal design of the liquid allocation of each well in the well group. The application provides a way for determining the reasonable liquid allocation parameters of the one-injection and same-production development of the heavy oil reservoirs, and can guide the efficient development of the heavy oil reservoirs by the one-injection and same-production. The dimensionless correction coefficient formula constructed by the application has high reliability by comprehensively considering the dynamic and static parameters of the reservoirs, is convenient for calculation, and is more beneficial to the field application of the technical personnel in the mine. By optimizing the liquid allocation of each well in the combination huff and puff, balanced displacement in the well group is realized, and the recovery degree can be improved by 1.6%.

The invention discloses a discontinuous combination method for multiple oil displacement systems based on a random forest algorithm. The method comprises the following steps: S1, oil displacement system discontinuous combination injection parameter physical simulation optimization; s2, oil displacement system discontinuous combination injection parameter numerical simulation optimization; and S3, establishing a random forest prediction model. The method can accurately reflect the contribution of the discontinuous combined injection mode of multiple oil displacement systems to the oil increasing effect; the method is easy to parallelize, high in overfitting resistance, insensitive to abnormal values and noise, and capable of processing high-dimensional data without feature scaling; according to the method, the correlation between the improved recovery ratio and different influence factors can be accurately analyzed, the importance degree of different factors for improving the recovery ratio is predicted, the comprehensive efficiency improvement index chart for improving the recovery ratio is formed after the factors are integrated, the advantages and disadvantages of an oil displacement scheme to be implemented can be more visually and accurately determined, and the oil displacement efficiency is improved. And technical support is provided for formulating discontinuous combination implementation schemes of multiple oil displacement systems and carrying out economic evaluation and risk analysis.

The utility model discloses an impurity cleaning device for quartz sand preparation, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a cleaning box, the inside of the cleaning box is fixedly connected with a fixed shaft, and the surface of the fixed shaft is sleeved with a driven sleeve. The motor drives the second gear, the toothed belt, the first gear and the rotating shaft to rotate, the rotating shaft drives the circular plate and the transmission pin to rotate, the transmission pin drives the transmission plate, the inclined block and the sliding sleeve to reciprocate left and right, when the inclined block moves rightwards, the inclined block pushes the transmission rod on the right side to move upwards, and the transmission rod pushes the right side of the net cage to tilt upwards. The left side of the net cage tilts downwards, and when the inclined block moves leftwards, the tilting direction of the net cage is contrary, so that the net cage shakes leftwards and rightwards to drive the quartz sand in the net cage to jolt, displace and turn over, the quartz sand cleaning device has the advantage of uniform cleaning, all the quartz sand can be uniformly turned over and displaced, and all the quartz sand can be uniformly cleaned; and the quartz sand cleaning effect is improved.

The application discloses a kind of folding slope rainwater accumulation and irrigation device, belong to the technical field of greenhouse drip irrigation, the device includes greenhouse body, the front side of greenhouse body is equipped with storage mechanism, drip irrigation assembly, drip irrigation nozzle, flat round inner cavity, arc-shaped baffle, notch, feedback channel and through hole, the fluid self-excited oscillation structure formed by flat round inner cavity, arc-shaped baffle, feedback channel and through hole is arranged in the inside of drip irrigation nozzle, forms high-frequency pulse outflow, the transient pressure wave generated in the soil by this pulse water flow can effectively break the water flow barrier between different aperture soil pore, the high concentration salt retained in small pore is displaced to macropore flow system, significantly improve the salt leaching efficiency of unit water quantity, compared with traditional constant-flow emitter, irrigation water is greatly saved.