Abstract: A cable unit structure includes two cable cores, a low dielectric material layer, an inner shielding layer and an outer cladding layer. The cable cores are arranged parallel to each other, each including an inner conductor and an insulation layer covering the inner conductor; the low dielectric material layer wraps two cable cores using a wrapping method; the inner shielding layer covers the low dielectric material layer; the outer cladding layer includes an insulative adhesive layer and a copper or aluminum layer and uses the copper or aluminum layer located inside and the insulative adhesive layer located outside to cover the inner shielding layer using a crossover method, and the insulative adhesive layer is formed by a heat-melt polyethylene terephthalate or polypropylene tape layer. In this way, the cable unit structure has excellent structural strength and the effects of shielding electromagnetic signals and blocking electromagnetic leakage.

Abstract: An industrial robot virtual commissioning and simulation method based on digital twin, in which a digital twin model of an industrial robot is established; a kinematic model of the industrial robot is established, and a forward kinematics analysis and an inverse kinematics analysis are performed on the kinematics model; the digital twin model is associated with a signal of the industrial robot to perform virtual commissioning and digital twin-based virtual-real mapping; and digital twin visualization of the industrial robot is realized.

Abstract: The present invention discloses a method for constructing a surface stress distribution cloud map based on critical refraction longitudinal wave detection. The method comprises: firstly, meshing a surface of a detected article; secondly, The mean transverse stress on different grid lines and the mean longitudinal stress on different grid lines were obtained by the critical refraction longitudinal wave detection method; next, calculating the equivalent stress of each mesh node according to the mean transverse stress on different mesh transverse lines and the mean longitudinal stress on different mesh longitudinal lines on the surface of the detected article; and finally, drawing a stress distribution cloud map of the surface of the detected article according to the equivalent stress. The present invention can obtain the stress situations at different points on the surface of the detected article.

Abstract: The present invention discloses a method for constructing a surface stress distribution cloud map based on critical refraction longitudinal wave detection. The method comprises: firstly, meshing a surface of a detected article; secondly, The mean transverse stress on different grid lines and the mean longitudinal stress on different grid lines were obtained by the critical refraction longitudinal wave detection method; next, calculating the equivalent stress of each mesh node according to the mean transverse stress on different mesh transverse lines and the mean longitudinal stress on different mesh longitudinal lines on the surface of the detected article; and finally, drawing a stress distribution cloud map of the surface of the detected article according to the equivalent stress. The present invention can obtain the stress situations at different points on the surface of the detected article.

Abstract: A 400 kA high energy efficiency reduction pot, comprising: anode carbon blocks, anode busbars, crust breaking and feeding device, anode lifting device, girders and pillars, pot hooding and exhausting system, cathode busbar arrangement structure, cathode carbon blocks, cathode lining structure and cathode pot shell, the pot is characterized in that: 1) superstructure and portal-type pillars are supported by pipe truss girders structure; 2) anode carbon block has eight steel stubs to be configured in a symmetrical mode; 3) the superstructure has 24 double-anode assemblies or 48 single-anode assemblies, six alumina feeding points, and two fluoride salt feeding points; 4) sub-section fume collecting and exhausting system is installed between a horizontal hood plate and a feeding hopper; 5) a device for sealing the anode rod by means a negative pressure suction is provided; 6) a new lining structure of holding heat on bottom, dispersing heat from side, and adding expansion layer at the cathode end have been design