Power equipment jointing clamp hole site marking instrument

The invention discloses a power equipment jointing clamp hole site marking instrument and belongs to the technical field of testing and measurement. The power equipment jointing clamp hole site marking instrument comprises a press-type adjustable fixed frame, a marking pen and a scale plate, wherein the press-type adjustable fixed frame is provided with a press base, a fixed rod and a group of hinged arms; the number of the hinged arms is four, the hinged arms are evenly distributed around the fixed rod, the upper ends of the hinged arms are hinged and assembled to the fixed rod, and the lower ends of the hinged arms are assembled to the marking pen; the upper end of the fixed rod is assembled to the press base, and the lower end of the fixed rod is fixed to the scale plate. The power equipment jointing clamp hole site marking instrument has the advantages of being simple in structure, convenient to operate and carry and good in universality, solves the problem that the working efficiency ...

Manual lifting platform

The invention discloses a manual lifting platform which comprises a four wheel trolley frame. A pair of sliding rails are arranged on the two sides of the trolley frame in parallel, a support connected through a pair of X-shaped center shafts is mounted upwards in the sliding rails, pin shafts are connected between the two front feet of the support and the front ends of the sliding rails of the trolley frame respectively, sliding wheels are connected between the two rear feet of the support and the rear ends of the sliding rails of the trolley frame respectively in a rolling mode, a fixing shaft is connected between the two sliding wheels, a screw hole block is mounted in the middle of the fixing shaft, a screw rod is screwed in the screw hole of the screw hole block, the front end of the screw rod is mounted in a bearing seat of a rear trolley frame, the rear end of the screw rod rotatably stretches out of a front trolley frame and is provided with a rocking handle, a platform is mounted ...

NiF2 nano material, preparation method and application thereof, lithium ion energy storage device and negative electrode material

The invention provides a NiF2 nano material as well as a preparation method and application thereof. The preparation method of the NiF2 nano material comprises the following steps: at least carrying out solvothermal reaction on a nickel source and a fluorine source at 120-200 DEG C for 8-18 hours to obtain the NiF2 nano material. The preparation method adopts a one-step solvothermal synthesis method to synthesize the NiF2 nano material, is simple in steps, can be carried out at a relatively low temperature, and has the characteristics of safety and controllability. The NiF2 nano material synthesized by the method presents a good hollow nano rod structure, and has good crystallinity, uniformity and morphology. The invention provides application of the NiF2 nanometer material in preparation of a lithium ion energy storage device. The lithium ion energy storage device prepared by taking the NiF2 nanometer material as a negative electrode active material has good electrochemical performance ...

Charging control apparatus in service control point and charging method in intelligent network

Method and system for preparing magnesium carbonate trihydrate whiskers by continuous crystallization method

The invention discloses a method and a system for preparing magnesium carbonate trihydrate whiskers by a continuous crystallization method. The method comprises the following steps: placing a first mother solution in a crystallization device, and adding an active agent under a stirring condition to obtain a first mixture; mixing the lithium precipitation mother liquor with an active agent to obtain a second mixture; adding the second mixture and magnesium chloride hexahydrate into the first mixture, and controlling the pH value of a system in a crystallization device to be 8.05-8.25 to obtain magnesium carbonate trihydrate slurry; and filtering, washing, separating, leaching and drying the magnesium carbonate trihydrate slurry to obtain the magnesium carbonate trihydrate crystal whiskers. The lithium precipitation mother liquor and the magnesium chloride hexahydrate are used as raw materials, the magnesium carbonate trihydrate crystal whiskers are prepared through reaction under specific ...

Yttrium fluoride nanometer material, preparation method and application thereof, and negative electrode material of lithium ion battery

The invention discloses an yttrium fluoride nano material, a preparation method and application thereof, and a negative electrode material of a lithium ion battery. The preparation method of the yttrium fluoride nano-material comprises the following steps: at least carrying out solvothermal reaction on an yttrium source and a fluorine source at 100-140 DEG C to obtain the yttrium fluoride nano-material to be purified; and calcining the yttrium fluoride nano material to be purified in a protective atmosphere at 240-400 DEG C to obtain the yttrium fluoride nano material. According to the preparation method provided by the invention, a solvothermal method is adopted, the yttrium fluoride nano material can be obtained at a relatively low temperature, and the yttrium fluoride nano material can be subjected to purification and impurity removal through calcination at a relatively low temperature, and the crystallinity of yttrium fluoride is improved. The method is low in energy consumption and ...

Application of alisol B in preparation of nasopharyngeal carcinoma resisting medicine

The invention relates to application of alisol B in preparation of an anti-nasopharyngeal carcinoma medicine, belongs to the field of medicines, and discloses application of a monomeric compound alisol B extracted from rhizoma alismatis in preparation of the anti-nasopharyngeal carcinoma medicine. The alisol B can effectively inhibit nasopharyngeal carcinoma cell proliferation, the inhibition effect is enhanced along with the increase of drug action time and drug concentration, and the western blot result shows that the alisol B can down-regulate Akt and PI3K protein expression levels. Alisol B is one of the main chemical components of rhizoma alismatis, and has great development and application values and market prospects in preparation of nasopharynx cancer resistant drugs.