9results about How to "Guaranteed distribution" patented technology

The invention relates to an aluminum alloy soldering lug and a preparation method and application thereof, and belongs to the technical field of welding. The aluminum alloy soldering lug disclosed by the invention is prepared from the following elements in percentage by mass: 3.0 percent to 4.5 percent of Si, 2.0 percent to 3.5 percent of Fe, 0.8 percent to 1.2 percent of Mg, 0.10 percent to 0.25 percent of Zr, 0.05 percent to 0.15 percent of Sc, 0.02 percent to 0.08 percent of Er, 0.05 percent to 0.12 percent of Ti, 0.005 percent to 0.02 percent of B and the balance of Al and other inevitable impurities. The mass ratio of (Zr + Sc) / Fe is 0.08 to 0.15; the mass ratio of Mg to Si is 0.25 to 0.35; the mass ratio of (Fe + Si) to (Zr + Sc + Er) is 20-25; the problems that laser welding aluminum alloy is thick in weld joint structure and uneven in performance, and a dissimilar material welding interface is embrittled are fundamentally solved.

This utility model relates to the technical field of sweeper reducers, specifically a protective housing for a sweeper reducer, including a reducer body, a motor body, a mounting base, and a protective device. The motor body is mounted on the reducer body and is used to drive the reducer body. The mounting base is fixed on the surface of the reducer body, and the protective device is disposed on the surface of the mounting base. The protective device includes an iron cover, which is located above the reducer body. This utility model, by setting up the protective device, forms a closed protective space through the iron cover, a sliding iron cover, and a magnetic cover plate. The positioning part can position the iron cover, which can shield and protect the reducer body and the motor body. It can reduce the direct impact on the surface of the reducer body and the motor body caused by accidental contact during operation and bumps during tool handling, and reduce damage such as scratches on the housing and deformation of components caused by external impacts, thereby protecting the integrity of the equipment's appearance and the stability of its internal structure.

The utility model discloses a computer hard disk shockproof device, including bottom frame and apron, and the rotation is connected through connecting shaft between both, be provided with antiskid block on the bottom frame, be provided with a plurality of openings on the apron, be provided with pressing block in the opening, one side of apron is provided with the connecting frame, one side of pressing block passes through the opening and is connected on the connecting frame, the one side swing joint of connecting frame has the knob, be connected with the connecting column on the apron, be provided with the connecting port on the connecting frame. The utility model discloses by adopting apron and bottom frame between box cover formula to install hard disk, and the protection effect of hard disk is greatly achieved, and whole shockproof device sets up a plurality of heat dissipation net, guarantees the heat in the hard disk working process can be dissipated, plus through the extrusion clamping between pressing block and antiskid block, can guarantee the hard disk stable in the operation process, adopt the adjustable mode of knob and connecting column, increase the application scope of whole protection device.

The present invention relates to the technical field of microbiological analysis, and discloses a single cell distributor, which comprises a platform, a three-axis motion mechanical arm arranged on the platform, and a control system arranged in the platform, the three-axis motion mechanical arm is arranged on one side of the platform, and the other side of the platform is provided with a mounting seat for placing a pore plate, one end or two ends of the mounting seat are provided with placing stations for placing liquid storage bottles, the three-axis movement mechanical arm is connected with a distribution assembly, the distribution pressure of the distribution assembly is less than or equal to 0.1 psi, the distribution assembly comprises a seat body, and the lower end of the seat body is provided with a sensor suction head and a spray head; a pressure sensor and a Coulter counter which are communicated with the sensor suction head and the spray head are arranged in the base body, and the pressure sensor, the Coulter counter and the three-axis movement mechanical arm are all electrically connected with the control system. According to the method, rapid, efficient and low-cost single cell high-throughput analysis and separation can be realized, meanwhile, the simplicity and convenience of operation and high survival rate of cells are ensured, and the data processing and analysis capability is expanded.

This invention relates to the field of power cable technology and discloses a cross-linked polyethylene insulated overhead cable with rapidly cross-linked silane and its preparation method, comprising: a conductor located at the center of the cable; a conductor shielding layer extruded on the outside of the conductor; an insulation layer extruded on the outside of the conductor shielding layer; an insulation shielding layer extruded on the outside of the insulation layer; a metal shielding layer disposed on the outside of the insulation shielding layer; and an outer sheath of the cable disposed on the outside of the metal shielding layer. A heat storage component located at an area prone to overheating is disposed on the outside of the outer sheath of the cable. The heat storage component allows heat to be transferred to the cable joint or local circuit when overheating occurs due to overload, increased contact resistance, etc. Once the temperature reaches the set melting point of the phase change material, the phase change material will undergo a phase change and absorb a large amount of latent heat, thus stabilizing the temperature of the overheated area near the phase change point, forming a thermal buffer, and preventing uncontrolled temperature rise and heat spread within a certain range.

The utility model discloses a bent tube, an insertion part and an endoscope, and relates to the technical field of medical instruments. The bent tube disclosed by the utility model is used for an endoscope. The bent pipe comprises a plurality of pipe joint units arranged in the axial direction of the bent pipe, and the pipe joint units are rotationally connected so that the bending action of the bent pipe can be achieved. The bent pipe is provided with a guide channel arranged on the side wall of the bent pipe, and the guide channel is used for guiding a pulling rope to penetrate. The bent pipe is provided with a first positioning part arranged at the far end of the bent pipe, the first positioning part is located on the extending path of the guiding channel, and the first positioning part is used for pre-positioning the pulling rope when the pulling rope is straightened on one side of the far end of the bent pipe, so that the far end part of the pulling rope is distributed along the extending path of the guiding channel. The scheme at least can be used for solving the problem that the connection reliability of the far end of the traction rope and the bent pipe is insufficient.

The application discloses a kind of carbon four alkylation raw material pretreatment catalyst and preparation method and pretreatment method, belong to carbon four light hydrocarbon processing technical field.Its technical scheme is: carbon four alkylation raw material first enters extraction column and is extracted, water-washed carbon four alkylation raw material is extracted from top and enters catalytic rectification column, catalytic rectification column is divided into rectification section, reaction section and stripping section from top to bottom, catalyst of the application is placed in reaction section;Carbon four alkylation raw material enters reaction section, butadiene therein and hydrogen gas occur reaction, and 2-butene generated in the reaction process is removed constantly;Catalytic rectification column bottom is extracted and pretreated carbon four alkylation raw material.The pretreatment method of the application carries out corresponding desulfurization, denitrogenation, deoxidant and diene hydrocarbon etc.pretreatment before carbon four alkylation raw material enters alkylation device, meets the requirement of alkylation feed to raw material impurity, improves alkylation oil quality, reduces the material loss of alkylation process.

The utility model discloses a high-voltage vacuum circuit breaker with a waterproof structure, which comprises a base, the top of the base is fixedly connected with a vacuum circuit breaker, the outer side of the base is fixedly connected with an intelligent control device, an installation box is arranged above the vacuum circuit breaker, and four supporting columns are fixedly connected inside the installation box. A transmission rod is driven by a motor to rotate, so that a driving bevel gear is driven to rotate, a third rotating rod is further driven to rotate, a third bevel gear is further driven to rotate, a first bevel gear is further driven to rotate, a first rotating rod is further driven to rotate, a first gear is further driven to rotate, and a second gear is further driven to rotate; the rainproof cloth is arranged on the vacuum circuit breaker, so that the rainproof cloth can descend, the vacuum circuit breaker is sheltered by the rainproof cloth, rainwater cannot be sprayed on the vacuum circuit breaker, the operation safety of the vacuum circuit breaker is guaranteed, the rainproof cloth can be retracted, and the heat dissipation capability of the vacuum circuit breaker can be guaranteed when it does not rain.

The present application relates to a kind of mechanical hand wheel switching lubricating structure, including switching box, partition, top rod, drive assembly, lubricating component, oil supplementing component, heat dissipation component, partition is vertically arranged in the inside of switching box, the inside space of switching box is divided into switching cavity and drive cavity, hand wheel drive mechanism is connected in switching cavity by two bearings, drive assembly is installed in drive cavity, lubricating component is installed in the top of switching box, bottom end extends to the inside of switching cavity, oil supplementing component is installed in the top of switching box, two ends are respectively connected with switching cavity and lubricating component, heat dissipation component is installed in the top of switching box, and is connected with drive cavity, drive assembly is connected hand wheel drive mechanism by top rod and spline structure, hand wheel drive mechanism is connected lubricating component by second limit ring.The present application can realize the lubrication of part during each process from electric switching to manual, can realize the supplement of lubricating oil to lubricating component during each process from manual switching to electric, it is very convenient.