77results about How to "Meet the requirements of working conditions" patented technology

The invention discloses an oil inlet sealing ring material for a vehicle brake master cylinder and a process thereof for manufacturing a sealing ring. The material is prepared from the following components in part by weight: 80 to 120 parts of ethylene propylene rubber, 4 to 6 parts of active agent, 1 to 3 parts of lubricant, 2 to 4 parts of acid-base balance agent, 1 to 3 parts of age resistor, 2 to 4 parts of sulfurizing agent and 25 to 35 parts of inorganic filler; then the components are subjected to the processes, namely mixing and molding, primary sulfurizing, punching and edge removingand secondary sulfurizing to obtain the oil inlet sealing ring material product with high strength, low compression deformation, tear resistance, resistance to braking fluid corrosion, resistance to low and high temperatures and excellent performance for the vehicle brake master cylinder; and the production efficiency and the product percent of pass are high, and the product can completely substitute similar imported products.

The invention relates to an adjustable integrated high-voltage grid electrode pulse modulator. An improved design is conducted on a filament high potential power supply circuit, a positive biased high potential power supply circuit, a negative biased high potential power supply circuit and a grid electrode pulse modulator circuit, and the high dense integration of the three high potential power supply circuits and the grid electrode pulse modulator circuit is achieved; a feedback circuit of a high potential power supply is improved, a magnetism feedback high voltage isolation sampling technology is adopted, and respectively independent adjustment to the high potential power supply output voltage values is achieved at the low voltage side; a high potential integrated failure detecting circuit is added, and the high potential power supply multi-circuit failures are integrated into one circuit signal; a pulse driving circuit is improved, and a dual-level denoising circuit is added; a grid electrode floating plate modulating circuit is improved, and an fire-making resistance protection circuit protection modulator and a traveling wave tube are added; a high-voltage transformer structure used for the modulator is improved, the size is reduced, and high-voltage isolation is achieved.

The invention discloses an integrated electro-hydraulic proportional hydraulic valve bank, which includes an oil inlet pair and a unit basic pair that are matched in an adhering way, wherein the oil inlet pair is internally provided with a pilot-operated reducing valve and a first safety valve; the inlets of the pilot-operated reducing valve and the first safety valve are connected with a pressure oil passage; the outlet of the pilot-operated reducing valve is connected with a pilot oil passage, and the outlet of the first safety valve is connected with an oil return passage; the unit basic pair is internally provided with unit proportional reversing valves, and unit electromagnetic proportional reducing valves are mounted at the two drive ends of each unit proportional reversing valve; the pressure opening of each unit proportional reversing valve is connected with the pilot oil passage; the proportional speed regulation superimposition and multiple actuating mechanisms are adopted, and the proportional flowrate distribution during the linkage operation is free from the influences of the external load variation and the maximum pump output; the pressure stabilizing oil source arranged on the oil inlet pair provides a pilot oil source for the system; and by adopting the electromagnetic proportional reducing valve on the two sides of the basic pair to control the pushing of the valve rod, the electric signals are converted into hydraulic force, and the repeatability precision is high.