4results about How to "Overcome size" patented technology

This application provides a laser head mounting assembly and a laser engraving machine. The laser head mounting assembly includes a housing, a heat sink, and a laser module. The housing has a receiving cavity. The heat sink is located within the receiving cavity and is stationary relative to the housing. The laser module includes a laser generator and a laser output head. The laser output head is connected to the laser generator and receives the laser light generated by the laser generator to output laser light to the workpiece to be engraved. The laser generator is connected to the heat sink and suspended in the receiving cavity. The laser generator has a first mounting part, which is mounted on the heat sink and elastically abuts against the side wall of the heat sink facing the first mounting part. This maintains the elastic mounting state of the laser generator relative to the heat sink, ensuring the fit between the first mounting part and the heat sink, guaranteeing the installation stability of the laser generator relative to the heat sink, overcoming assembly tolerances and dimensional tolerances, and improving the installation convenience of the laser head mounting assembly.

A large-diameter tension-compression decoupling fusion type linear separation device is composed of a separation ring, an inner support protective cover, a detonator seat, an energy-gathering cutting cable assembly, a connecting fastener and a detonator, the protective cover is internally provided with the energy-gathering cutting cable, after the detonation energy is transmitted to the main charge of the cutting cable through the transmission assembly of the detonator, the shaped charge is driven by the detonation wave to form a metal jet to cut and separate the separation ring, the high-level load transmitted by the projectile body is tension-compression decoupled through the tolerance control of the separation ring and the inner support protective cover, and a large-diameter tension-compression decoupling fusion type linear separation device is given, which has the advantages of simple structure, reliable separation performance, high bearing capacity, large connection stiffness, light weight, convenient installation and the like.

The application relates to the field of boiler equipment construction, and discloses a multi-stage reference control anti-twisting hoisting method for a supercritical boiler spiral water-cooled wall, which comprises the following steps: demarcating a first-stage reference according to the column position of a boiler steel frame, and demarcating three-stage references on a spiral water-cooled wall module; hoisting a rigid beam into position, aligning the rigid beam according to the first-stage reference, and demarcating a second-stage reference on the surface of the rigid beam; hoisting the spiral water-cooled wall module into a field and suspending the spiral water-cooled wall module on the side of the rigid beam; applying a transverse traction force to the spiral water-cooled wall module through an operating chain fall, so that the spiral water-cooled wall module approaches the rigid beam until the three-stage reference and the second-stage reference meet preset alignment requirements; implementing temporary welding to fix the spiral water-cooled wall module and the rigid beam, and repeatedly executing the assembling steps in the height direction layer by layer. The application utilizes deformation absorption to cut off the physical path of the error transmission to high altitude, prevents the module from being twisted, and improves the assembling precision of the heating surface.

The invention provides a preparation method and application of a size-controllable high-crystallinity stannous niobate single crystal. The preparation method comprises the following steps: mixing stannous chloride, niobium pentoxide and halogenated metal salt by adopting a molten salt method to obtain a mixed salt, carrying out molten salt reaction on the mixed salt in an inert gas atmosphere, and annealing to obtain the high-crystallinity stannous niobate single crystal from the nanometer level to the micron level. According to the technical scheme, the metal salt with the low melting point serves as a reaction medium and is evenly mixed with niobium oxide and stannous chloride to be subjected to the molten salt reaction, the high-crystallinity stannous niobate single crystal material with the controllable size can be prepared by adjusting the technological conditions and the proportion of the raw materials in the reaction process, single crystals with the uniform size are obtained, and the preparation method is simple and easy to implement. The effective migration distance of carriers can be effectively controlled, so that the carriers can be transmitted to the surface of the single crystal from the inside to react, and stannous niobate single crystal materials with different sizes can be obtained according to actual requirements.