34results about How to "Applicable to a wide range of environments" patented technology

The invention discloses a carbon contact strip of a pantograph and a manufacturing method thereof. The carbon contact strip is prepared from following raw materials, by weight, 28-43 parts of petroleum coke powder, 25-28 parts of asphalt coke powder, 10-12 parts of sprayed carbon black, 2-5 parts of sulfur, 3-5 parts of boron nitride, 5-8 parts of carbon fiber, 4-6 parts of natural graphite, 5-7 parts of artificial graphite, 1-3 parts of calcium chloride powder and 30-35 parts of modified asphalt. The carbon contact strip is high in mechanical strength, is good in self-lubricating performance and electric arc resistance and is wear-resistant. The carbon contact strip can be not only used in various locomotives in railway main lines with speed per hour being 120-250 km / h, but also used in motor train units and high-speed trains with speed per hour being higher than 250 km / h. The carbon contact strip is free of limit of environment and climate conditions.

The invention discloses a unimolecule embedding method for enzyme. The method comprises the following steps of: reacting an enzyme modifying agent of N-acryloxysuccinimide, acryloyl chloride or itaconic anhydride with amino groups on enzyme molecules so as to make each enzyme molecule connect a double bond; and reacting the double bond with a crosslinking agent to embed the individual enzyme molecule. By adopting the method, the center of each embedded particle only contains the individual enzyme molecule, and the thickness of the grid structure on the outer layer of the enzyme molecule is often prepared into the nanometer class, so that the enzyme in which the unimolecules are embedded has the characteristics of large specific surface area, low diffusion mass transfer resistance, high catalytic activity, high stability and the like. The method has the advantages of simple process, mild condition, high yield of enzyme activity, wide environmental application range and the like.

The invention discloses an impeller, which comprises a front disc, a rear disc, and guide fins disposed between the front disc and the rear disc in an array type. The end faces of the discs are connected, and one end of the lower bottom edge of the guide vane is connected with the rear disc. The beneficial effects of the present invention are: the impeller of the present invention has many types of conveying fluids and a wide range of applicable environments, not only has the advantages of large fluid flow rate, but also has the advantages of high efficiency, high pressure and small volume; it can be manufactured by one-time molding process , without assembly and welding, the process is simplified, mass production is possible, and the production cost is low.

A thermo-melting solder for the thermo-melting welding between copper wire and structural member is composed of the thermo-melting welding stock which contains less Zn and Sn for generating CuZnSn alloy at welded point and excessive Al for removing surficial oxide from welded point, and the igniting agent containing potassium permanganate instead of potassium bichromate (or chloride).

The invention belongs to the technical field of lasers, and in particular relates to a laser collimating temperature-controlled sealing mounting seat. The collimator lens adjustment device of the mounting seat of the present invention is designed with a three-dimensional adjustment system: the adjustment of the collimator lens on the upper cover plate has three dimensions of X, Y, and Z, and the adjustment of the X and Y dimensions is realized by adjusting screws on both sides of the rotating cover. The adjustment of the Z-direction dimension is realized by rotating the rotation direction of the collimating lens mounting seat; the inner seat of the mounting seat adopts an airtight design as a whole. The invention separates the adjustment of the XY dimension and the Z dimension of the semiconductor laser collimation system, simplifies the adjustment device, ensures the airtightness of the inner seat, and improves the overall performance of the laser system.

The invention relates to a thermofusion solder detonator that welding between coppr wires, elements, etc, and a relative heating fusion welding agent, wherein the invention is characterized in that: it uses kalii permangana to replace potassium bichromate or potassium chlorate of detonator. The invention has high safety,high mechanical strength, and simple process, while the welding point is copper alloy.

The invention provides a safety anti-drop device for power transmission line climbing pole operation, including a rotor drone, a drone remote control, a fixing module and an auxiliary module; the fixing module includes a fixing hook, a universal joint, a pulley and a traction rope, The fixed hook is also provided with a first shackle; one end of the traction rope is connected to the retractable module arranged on the ground, the other end of the traction rope passes through the pulley, and a traction unit is arranged near the end of the pulley; the auxiliary module It includes an electric remote control telescopic rod arranged at the lower end of the rotor UAV, a remote controller of the telescopic rod, a connecting sleeve arranged at the lower end of the electric remote control telescopic rod, a connecting hook arranged at the lower end of the connecting sleeve and adapted to the first shackle, a A video monitor on the lower end of the drone and a display wirelessly connected to the video monitor. The invention can not only solve the problem of no safety protection rope for manual initial climbing of the tower, but also has the advantages of safety, convenience, convenient operation, safety and reliability, small impact of falling, and is easy to carry and install.

The invention provides a bi-stiffness modularization metal elastic tire. A plurality of tire body modules are sequentially connected in the circumferential direction of an installing groove of a rim to form a tire body, the middle of the interior of a supporting shell are symmetrically provided with two inner supporting bodies in the axial direction, the lower portions of the inner supporting bodies are connected with the bottom of the supporting shell, and the tops of the inner supporting bodies are bent to form arch structures. When a vehicle runs, the supporting shell bears loads to deform firstly, the supporting shell can be in contact with the top ends of the inner supporting bodies only after a certain deformation amount is achieved, the road surface is protected by the supporting shell with small stiffness, most loads are borne by the inner supporting bodies with large stiffness, excessive deformation of the tire body modules is prevented, and the stiffness changing characteristic is achieved. The tire body modules are made of metal materials and are free of pollution, the overall performance of the tire cannot be influenced by single damage, single maintenance or replacement can be achieved, a user does not need to worry about pricking, the applicable environment scope is wide, the recycling and reusing rate are high, and the vehicle safety and the environmental suitability can be effectively improved.

The invention discloses a preparation method for high-stable immobilized enzyme, which comprises: using enzyme, water, surfactant, organic solvent, monomer or prepolymer, and crosslinking agent to construct microemulsion system; adding a little reaction substrate to induce enzyme active conformation; heating, ultraviolet irradiating or direct radiating to initiate free radical polymerization and realize the embedding fix in high-crosslinking carrier. This invention is simple, has high yield and well stability, and fits to wide range.