14results about How to "Clear principle" patented technology

The application discloses an airborne equipment weighing device, which comprises an article support, a ball, a ball support, a pressure sensor, a pressure sensor display instrument, a pressure sensor support and a support base, the article support is supported on the ball, the ball is inlaid on the ball support, one end of the ball supports the article support, the other end of the ball is pressed on the pressure sensor, one end of the pressure sensor supports the ball, the other end of the pressure sensor is connected with the pressure sensor display instrument through a wire, the pressure sensor is installed on the pressure sensor support through screw threads, and the pressure sensor support is arranged on the support base. The application has the advantages of simple operation, small error, clear principle, convenient production, high practicability, easy popularization and application and great value.

This utility model discloses a vulcanized rubber sealing structure, including a metal skeleton and a rubber body. One end of the metal skeleton is tapered, and the diameter of the tapered structure gradually decreases outward along the axis. The apex angle of the axial section of the tapered structure is 1. The tapered surface of the metal skeleton is provided with an annular groove perpendicular to the center along the radial direction. The rubber body is placed in the annular groove and vulcanized with the metal skeleton. The outer surface of the rubber body is a tapered structure, and the apex angle of the axial section is 2. By controlling the angle between the vulcanized rubber and the sealing surface, the vulcanized rubber sealing structure is optimized to prevent the rubber from cracking due to pressure during sealing, resulting in high reliability.

A broadband voltage transformer error compensation method is proposed. First, a broadband test platform is constructed using a signal generator, power amplifier, standard voltage transformer, and high-bandwidth data acquisition system. The ratio and phase errors of the transformer at multiple frequency points are acquired through primary-side excitation and secondary-side synchronous acquisition. Based on the slope, first derivative, and second derivative characteristics of the error curve, the entire frequency band is adaptively divided into segments. Within each segment, multiple candidate models are fitted using a polynomial or exponential-linear combination model. The optimal model is selected based on the coefficient of determination, mean absolute error, and root mean square error. Ratio and phase error compensators are constructed based on the fitting functions of each segment, and error compensation is achieved using a feedforward approach. This method can significantly reduce amplitude and phase errors over a wide frequency range, improving the dynamic measurement accuracy of the voltage transformer.

The invention provides a ship lock safety blocking device and method for dissipating energy through a hydraulic oil cylinder. The device comprises lifting mechanisms symmetrically arranged on a lock top, an energy absorption oil cylinder mechanism, a steel wire rope steering mechanism and a steel wire rope guide mechanism arranged in a lock wall gate groove. The lifting mechanism is used for winding, unwinding and braking the steel wire rope; and the steel wire rope passes through the guide mechanism to form a barrier line after being redirected by the steering mechanism. When a ship collides with the steel wire rope, collision force drives the piston rod of the energy absorption oil cylinder to stretch out, kinetic energy of the ship is converted into heat energy by compressing hydraulic oil, and stable buffering and efficient energy dissipation are achieved. The device is simple in structure, convenient to maintain and capable of adapting to water level changes and effectively absorbing high-impact kinetic energy, the reliability and performance of ship lock safety barrier are remarkably improved, and the technical problems that in an existing technical scheme, a barrier device is complex in structure, troublesome to overhaul and maintain, insufficient in barrier performance and the like can be solved.

The invention discloses an anti-conductive roller copper plating device and method for acid copper plating equipment, and belongs to the technical field of electroplating equipment. The anti-conductive roller copper plating device comprises a first contact roller arranged at a plating solution outlet; the liquid squeezing roller is in pressure contact with the first contact roller; the contact point of the liquid squeezing roller and the first contact roller coincides with the tangent point of the base material film and the first contact roller. Physical extrusion removal is directly carried out on the first position where the plating solution is brought out, the amount of the plating solution flowing to the subsequent conductive roller is fundamentally reduced, and therefore the possibility that copper deposition occurs on the surface of the conductive roller is greatly reduced. Experiments show that after the method is adopted, the conductive roller can be kept clean for a long time and does not need to be cleaned frequently, and the method is clear in principle and can be widely applied to various acidic copper plating devices adopting roller transmission systems, especially continuous electroplating production lines of flexible base materials such as PET / PI and the like.

The present application relates to petrochemical instrument measurement technical field, especially a kind of non-contact tension ring size measuring device and method, device includes dark box, light source and slit and scale slide rail, cooperate vertical horizontal hanging rod and adjustable hanging line, horizontal movable tension ring clamp and movable coordinate paper clamp, form the projection of tension ring on coordinate paper.By similar triangle relationship, get the actual diameter of tension ring;Through the difference of multi-axis projection diameter, the roundness is evaluated.The scheme is simple in structure, low in cost, accurate in measurement, and can replace expensive image instrument for non-contact measurement of platinum ring outer diameter.

This invention discloses a coal unloading car unhooking device and method for power plants, including a calibration electric slide rail, a three-axis robotic arm, a rotary robotic arm, a positive hook electromagnetic device, and a spring lifting hook calibration electric slide rail, which is mounted on a robot; the three-axis robotic arm is mounted on the calibration electric slide rail and driven by the calibration electric slide rail to move along a horizontal straight line; the rotary robotic arm is mounted on the free end of the three-axis robotic arm and driven by the three-axis robotic arm to rotate or move up and down; it includes a bracket with a first support rod and a second support rod, an alignment laser probe disposed on the inner side wall of the first support rod, a fixed frame mounted on the outer side wall of the second support rod, and a magnetic plate mounted on the outer end face of the fixed frame; the positive hook electromagnetic device includes a square electromagnet, which is mounted in the fixed frame and located on the back of the magnetic plate. This invention has a large mechanical motion redundancy, making the mechanical device reliable and stable in performance.

This invention belongs to the field of disaster prevention and mitigation for underground structures. It discloses a double-layer beam analysis model and method for analyzing the stress and failure characteristics of a circular tunnel spanning a fault. The method constructs a double-layer beam analysis model using the stiffness coefficient of the foundation springs and the calculation parameters of the beam elements. If the limit state of the double-layer beam analysis model meets the criteria, the failure state of the structure can be quickly determined through bending moment and shear force, and the failure location can be identified. Simultaneously, the failure state can be quickly determined by analyzing the proportions of bending moment and shear force terms. This invention achieves high-precision reproduction of fault deformation modes through a load-bearing beam, reproduces the stress and deformation characteristics of a tunnel spanning a fault during fault slippage through the double-layer beam model, and achieves rapid identification of the tunnel structure's failure state and failure mode through the limit state compliance criteria for the bearing capacity of annular reinforced concrete structures.

The application discloses a tunnel blasting efficient dust removal system and an operation method, which comprises a water spraying area, a spraying area and a standard area which are sequentially divided between a tunnel face and a tunnel portal, a trolley which runs back and forth is arranged at the joint of the water spraying area and the spraying area, a closed curtain, a high-pressure water gun and a high-pressure pump are arranged on the trolley, the closed curtain blocks the blasting dust on the tunnel face from overflowing out of the water spraying area, the high-pressure water gun sprays water to the water spraying area and automatically strengthens and intensifies the high-pressure dust removal operation, the blasting dust diffused from the water spraying area to the spraying area is subjected to segmented and accurate spraying dust removal through a plurality of nozzles on the tunnel side wall of the spraying area, and the dust concentration after spraying diffused from the spraying area to the standard area reaches the national health standard; therefore, the dust removal system in the tunnel has the advantages of simple structure, economic saving, health and environmental protection, safety and high efficiency, high automation degree and the like, and in combination with the corresponding construction method, the dust removal system has high economic benefits, energy-saving and environmental protection benefits and social benefits.

The invention discloses a distributed coherent aperture radar efficient search method based on grating lobe utilization in the technical field of radar signal processing. The distributed coherent aperture radar efficient search method comprises the following steps: firstly, analyzing a DCAR array directional diagram, and determining main lobe and grating lobe characteristics; then, the grating lobes are innovatively incorporated into an effective detection unit, detection gaps between the main lobe and the multiple grating lobes are covered by planning local scanning, and scanning of a fan-shaped area is completed; and finally, through connection of sector scanning, the whole monitoring airspace is covered in sequence. According to the method, the thinking formula that grating lobes are regarded as interference and must be suppressed in the traditional technology is broken through, the thinking formula is converted into a favorable factor for improving the search efficiency, the high angle measurement precision is kept, meanwhile, the single-time beam irradiation range is remarkably expanded, the total search wave bit number and time are reduced, the utilization rate of radar radiation energy is greatly increased, and the method is suitable for large-scale popularization and application. The technical effect is prominent, and important practical value is achieved.

The application provides a key point vehicle-mounted high gun fire control shooting parameter correction method based on a deformation variable, that is, firstly, a full-cannon finite element parameterized model is established, Isight software is combined with ABAQUS software, and an approximate model of the time length and the stable deformation amplitude when the chassis deformation reaches a stable state is constructed, secondly, a real-time deformation variable function taking a sine function as a base function is established, thirdly, the real-time chassis deformation variable is decomposed into a roll angle and a pitch angle, and finally, the roll angle and the pitch angle are used to correct target tracking data and parameter data in a fire control calculation process, so as to improve the accuracy of the key point vehicle-mounted high gun fire control shooting parameter. The principle of the application is clear, the method effectively solves the fire control parameter error problem caused by the attitude change of the vehicle body deformation during the shooting of the vehicle-mounted high gun, and provides a reference for the key point vehicle-mounted high gun fire control parameter correction.

This invention discloses a horizontally mounted piston-airbag type water hammer protection tank for water hammer protection in water supply systems. The tank body has an inner tank, separating an inner cavity from an outer cavity. The inner tank is further divided into left and right inner cavities by left and right partitions, with a piston cylinder and an airbag cylinder respectively installed at each end. The left and right pistons reciprocate within the cylinders in a sealed manner. The matching left and right telescopic airbags, composed of soft bag-like structures and multi-rod telescopic joints, move intermittently within the airbag cylinders, forming completely isolated air pressure and hydraulic chambers, achieving gas-liquid separation and heat insulation. A float assembly is installed at the bottom of the tank, and a circulating water nozzle is located at the top, connected downstream of the water pump check valve. A bottom-side spray nozzle is aligned upstream of the check valve via a first ejector. A water supply branch pipe connects to the main water supply pipe via an inlet ball valve and a second ejector. This device replaces the traditional waterbag structure with a piston-airbag synergy, solving the defects of waterbag rupture and the need for continuous air replenishment in air compressor-type systems, thus improving the reliability and energy efficiency of water hammer protection.

The present application relates to a kind of well sinking opening mud burst determination method. Whether the well sinking opening of pipe jacking construction will appear mud burst, mostly based on engineering experience determination, result is unreliable. The present application obtains the design parameter of well sinking opening, the specific gravity of soil body around well sinking, and the cohesion and internal friction angle of soil body;The gravity of unit width inside mud burst body, groundwater seepage force of unit width inside mud burst body, the pressure of top of unit width inside mud burst body, and the damage force when unit width inside mud burst appears are calculated;The resistance of top of unit width inside mud burst body, the resistance of bottom of unit width inside mud burst body, and the total resistance of unit width inside mud burst body are calculated;The damage force when unit width inside mud burst appears and the total resistance of unit width inside mud burst body are compared, and the determination result is obtained. The present application judges whether mud burst will appear by combining the damage force of mud burst and the resistance of mud burst, the principle is clear, the operability is strong, and more reliable result can be obtained.

The invention belongs to the technical field of image processing, and particularly relates to a rotor wing flight simulator wide area visual channel edge overlapping fusion method, system and device. The method comprises the following steps: acquiring single-channel image data of a multi-view channel; identifying and marking the independent display area and the edge overlapping area through comparison; defining internal and external transition zones at the boundary of the overlapping region; extracting brightness data of each area and establishing a brightness database; and performing brightness adaptation processing on the edge overlapping region and the transition zone based on the database, adjusting the brightness by calculating an adaptation coefficient based on the brightness mean value of adjacent regions, so that the edge overlapping region and the transition zone are in smooth transition with the independent display region, and finally generating a seamless fusion wide-area visual image. According to the method, hardware adjustment is replaced by a software algorithm, and the problems of uneven brightness and unnatural fusion of multi-channel projection are effectively solved.