7results about How to "Fast correction" patented technology

The invention relates to the technical field of truss positioning devices, in particular to a double-layer large-span truss integrated small unit assembling mechanism and method. Comprising vertical frames, sliding rails are arranged on the two sides and the middle of each vertical frame, and the multiple vertical frames are spliced end to end to form a supporting jig frame; the guide assemblies are arranged on the sliding rails on the two sides of the vertical frame in pairs, and the two guide assemblies can form a V-shaped limiting channel and are used for guiding the truss to be aligned; the supporting assemblies are arranged on the sliding rails in the middle of the vertical frame in pairs, and locking pieces in butt joint with the guiding assemblies are arranged below the supporting assemblies; through cooperation of the supporting assembly and the guiding assembly, in the hoisting and falling process of the truss, the truss is rapidly guided to reach the designated position through guiding correction, the alignment time is effectively shortened, and the construction difficulty is reduced.

The invention relates to the technical field of steel structure deep processing, and particularly discloses an H-shaped steel wing plate precise straightening machine which comprises a box base and a control box, a row of conveying rollers are rotationally arranged in the box base, and a primary straightening unit and a secondary straightening unit are arranged on the left side and the right side of the upper end of the box base correspondingly. A detection mechanism for detecting the flatness of an upper wing plate and a lower wing plate of the H-shaped steel is arranged between the primary correction unit and the secondary correction unit, and the detection mechanism is electrically connected with the control box; according to the precise straightening machine for the H-shaped steel wing plate, various deformation conditions of the H-shaped steel wing plate can be effectively eliminated, the H-shaped steel can keep the optimal mechanical structure stability, the detection framework can conduct all-directional detection on the wing plates with different widths, and therefore the detection precision of the flatness of the H-shaped steel wing plate is higher, and the application range is wider.

This utility model discloses a tool for locally bending and leveling angle steel, including a worktable, a pad fixedly connected to the top of the worktable, and a hammer placed above the pad. The tool also includes a driving device mounted on top of the hammer. This utility model relates to the field of metal processing technology. Through the cooperation of a support rod, a fixing frame, and a reciprocating assembly, the fixing assembly secures the angle steel to the top of the worktable. Driven by the reciprocating assembly, the hammer repeatedly strikes the bent area of ​​the angle steel, thereby straightening it. This device occupies little space and accelerates the straightening process. It solves the problems of hydraulic straightening machines, which, while providing good leveling results, are large, heavy, inconvenient to move, and expensive. They are only suitable for overall straightening of large batches of large-sized angle steel, and for small-area, localized bending and leveling, they are cumbersome to operate, energy-intensive, and lack flexibility.

The present application belongs to the technical field of oral orthodontics, and discloses an appliance for correcting upper and lower anterior teeth, and a design and manufacturing method thereof. The design comprises an upper posterior alveolar fitable with the patient's maxillary posterior teeth, a lower posterior alveolar fitable with the patient's mandibular posterior teeth, an upper anterior alveolar fitable with the patient's mandibular posterior teeth, and a lower anterior alveolar fitable with the patient's mandibular anterior teeth. The integrated appliance can transmit the reaction force between the upper and lower teeth to enhance the correction effect on the upper and lower anterior teeth. In addition, since the maxillary posterior teeth and the upper posterior alveolar fit as well as the mandibular posterior teeth and the lower posterior alveolar fit are always kept in a tightly fitted state, the posterior teeth can provide a larger correction force to the anterior teeth through the integrated appliance, so that the correction force on the anterior teeth is reduced as the anterior teeth are gradually corrected, thereby making it possible to correct the positions of the upper and lower anterior teeth at the same time, improve the correction speed, and shorten the treatment cycle.

The invention belongs to the field of information communication, and particularly relates to a transistor model and a modeling method.The transistor model comprises a voltage-controlled switch and a nonlinear output resistor used for representing a GaN HEMT, an equivalent model is established for the transistor model in the two working states, the action of the voltage-controlled switch is controlled by an input driving level, and the nonlinear output resistor is used for representing the GaN HEMT. Component parameters of the transistor model are extracted according to direct current measurement and S parameter measurement under specific bias, the transistor model in the switching mode is equivalent to a circuit containing a voltage-controlled switch, and model simplification is achieved; a measurement system used for extracting the complete parameter set of the model is simple, the measurement speed is high, a large amount of data directly related to the transistor model design or process can be obtained, and the method can be applied to the design of an efficient radio frequency power amplifier.

A CAN bus urea quality sensor concentration correction system and method are disclosed. The CAN bus urea quality sensor concentration correction system includes a urea quality sensor body and a quality concentration probe disposed at the lower end of the urea quality sensor body. The quality concentration probe has a emitting surface and a reflective surface spaced apart from the emitting surface. The CAN signal interface of the urea quality sensor body is electrically connected to a USB-CAN analyzer via a CAN bus. The serial port of the USB-CAN analyzer is electrically connected to the serial port of a host computer. This invention corrects the distance between the emitting and reflective plates of the urea quality sensor through closed-loop compensation data fitting, making the urea concentration measured in a standard urea solution at room temperature more accurate. By integrating concentration measurement data under other temperature and concentration conditions through a large amount of experimental data, the measurement accuracy of the ultrasonic probe product is significantly improved. No additional components are required, and the correction speed is fast, exhibiting high correction accuracy and practicality.

The present invention designs a dual mechanical system dynamic long molar depression appliance, including a vacuum lamination brace and a traction piece, wherein the vacuum lamination brace and the traction piece are detachably installed, an X-shaped depression opening is provided at the upper end of the molar model of the vacuum lamination brace, and a traction hook model is provided on the jaw side and the buccal side of the molar model, and the traction piece is an elastic rubber band, a depression magnetic sheet and a traction magnetic sheet. The present invention combines magnetic force with elastic force to perform molar depression correction, which can improve the correction speed, and at the same time, the magnetic force can strengthen the vertical downward traction force compared with the elastic force, and the traction performance is good. The brace structure is easy for patients to wear, and no surgical treatment is required to relieve pain. At the same time, compared with other correction methods, the use of arch wires is greatly reduced, and the comfort in the oral cavity is improved. It can perform depression correction on single or multiple molars according to correction needs, and the traction hook model can be formed together according to the position of the corrected molar when making the vacuum lamination brace.