3results about How to "Simple and strong structure" patented technology

This invention belongs to the field of permanent magnet motor technology, specifically relating to a dual-secondary modular permanent magnet flux switching linear motor and its manufacturing method, comprising a motor primary and a motor secondary, with an air gap structure provided between the motor primary and the motor secondary; wherein, the motor primary includes at least one motor primary module with identical structure; the motor primary module includes an iron core, a permanent magnet, and an armature coil; the permanent magnet is placed inside the iron core, and the permanent magnet is distributed in a double U-shape around the armature coil; the motor secondary adopts an axisymmetric double-sided secondary structure composed of an iron core.

The utility model discloses a metro track measuring device, which relates to the technical field of measuring tools, and comprises a first non-zero track change device and a second non-zero track change device, the first non-zero track change device is arranged on a first side track, and the second non-zero track change device is arranged on a second side track; the zero-finding reference surface extension block is placed on the first non-zero rail zero-finding device and the second non-zero rail zero-finding device, the first gradienter is arranged at one end of the zero-finding reference surface extension block, the first gradienter is connected with a laser range finder, and the laser range finder is used for measuring and displaying data. According to the invention, the numerical error generated by the non-zero rail to the measured floor surface can be effectively eliminated, and the method can be applied to most operation projects requiring the zero rail reference surface, thereby reducing the unreliable factors of different measurement personnel, improving the measurement accuracy, improving the working efficiency to a great extent, and shortening the overall operation time.

The foldable display device includes: a first body and a second body; and a hinge part connected to the first body and the second body. The hinge part includes: a first joint having at least one first recessed part; a second joint facing the first joint; a third joint located at one side of the first joint; a first leaf spring located in the first recessed part; and a first fastening connection component fixed to the third joint through the first leaf spring and the first joint.