57results about How to "Solve the investment" patented technology

The invention belongs to the field of train wheel forming machining, and particularly relates to a train wheel nearly-solid pressure forming method which aims at solving the technical problems that an existing rolled steel wheel producing method has many procedures, is large in device investment and high in production cost, wastes materials and is high in energy consumption. The method includes the following steps of firstly, conducting alloy smelting, wherein metal raw materials are smelted through a 50tUHP electric arc furnace, the smelting temperature ranges from 1655 DEG C to 1685 DEG C, and heating is stopped after molten steel is formed; secondly, casting a train wheel ingot blank, wherein the molten steel is poured into a metal die after the temperature of the molten steel falls to the range of 1540 DEG C to 1560 DEG C, the metal die slowly cools, and the change of the solid phase size fraction of the molten steel is monitored in real time; thirdly, conducting nearly-solid temperature pressure forming, wherein when the solid phase size fraction of the train wheel ingot blank in the metal die reaches the range of 60% to 70%, a train wheel is formed through pressurizing of an 80MN hydraulic machine, the specific pressure intensity ranges from 65 MPa to 70 MPa, and the pressurizing speed ranges from 35 mm / s to 40 mm / s. The train wheel nearly-solid pressure forming method has the advantages of being short in technological process, simple in procedure, small in device investment, high in raw material utilization rate and capable of saving energy.

The invention relates to a centralized remote power supply system, which includes a main equipment room, where a wireless main equipment and a power main equipment are installed in the main equipment room. The power main equipment includes an inverter and a transmission main equipment. The electricity is converted into direct current with a voltage of -48V~24V and connected to the wireless main device to make the wireless main device operate normally; Then, the power transmission line and the optical fiber transmission line are used to transmit the power to the remote unit of the remote coverage system of the newly built base station to provide stable power for the operation of the remote unit, thus completing the construction of the entire base station. The invention reduces the construction scale of base stations, saves engineering investment and improves the safety and reliability of network operation, and can be applied to the signal coverage of urban roads, subways, tunnels and small rural base stations.

The invention discloses a domestic simple bobbin winder and a production method thereof. The domestic simple bobbin winder comprises a machine frame part, a yarn guiding part, a pressurizing winding part, a breakage stopping part and a transmission part. The domestic simple bobbin winder is specially used for enterprises small in production scale, and the enterprises specializes in external processing and production; due to the fact that the number of winding tasks is small, if a special bobbin winder is arranged, the occupied area is large, the use efficiency is low, and the investment is large; due to the fact that the use frequency of the bobbin winder is low, equipment breaks down more easily, professional maintainers are required for maintenance, and the burden of the enterprises is large. The domestic simple bobbin winder is specially used for solving the problem of difficult winding by family type small enterprises, and the price of the equipment is only 800-1000 yuan; due to the fact that the structure is extremely simple, no professional maintainer is needed; the domestic simple bobbin winder is small and exquisite, and only 4-5 square meters of area is occupied; operation is extremely convenient, a user can use the domestic simple bobbin winder without being trained, and the production problem of difficult winding by the small enterprises is solved.