A. The hydraulic system(hydraulic power pack system)consists of five parts:power components, execution components, control components, auxiliary components, and hydraulic oil. 1. Power component: The function of the power component is to convert the mechanical energy of the prime mover into the pressure energy of the liquid. It refers to the oil pump in the hydraulic system, which provides power for the entire hydraulic system. 2. Execution component: The function of the execution component is to convert the pressure energy of the liquid into mechanical energy, driving the load to perform linear reciprocating or rotary motion. 3. Control components: Control components control and regulate the pressure, flow rate, and direction of the liquid in the hydraulic system. 4. Auxiliary components: Auxiliary components include oil tanks, oil filters, coolers, heaters, accumulators, oil pipes, and pipe joints. (Hydraulic auxiliary components, like hydraulic components, are indispensable components in hydraulic systems, and their impact on system performance, efficiency, temperature rise, noise, etc. is no less than that of hydraulic components themselves.) 5. Hydraulic oil: Hydraulic oil is the working medium for transmitting energy in hydraulic systems. There are various mineraloils, lotion and synthetic hydraulic oils.
B. The function of the hydraulic system(hydraulic power pack system): In ACpowerdrivesystems, the hydraulic power pack servo system requires a wide range of adjustment of braking capacity, and mechanical braking also plays a certain role in controlling the speed of lifting. In systems with high automation level of DC power drive, the cold rolling mill plays the final stop role, and the hydraulic control system of the brake is matched with the driving type and automation level of lifting. 1. According to the actual needs of lifting operations, generate different working oil pressures, adjust and control the braking torque of the disc brake, and achieve working braking; 2. Can quickly and automatically return oil during safe braking, achieving secondary braking; 3. According to the needs of multi-stage lifting and layer changing, and the need to adjust the rope after the wire rope is stretched, control the rope adjusting clutch of the live drum of the double cylinder hoist to form braking.
C. Features of hydraulic system(hydraulic power pack system): 1. Due to the fact that the hydraulic system is connected through oil pipes, the transmission mechanism can be conveniently and flexibly arranged through oil pipe connections, which is superior to mechanical transmission. Due to the large thrust of the hydraulic cylinder and its convenient layout, it is not only easy to operate, but also has a beautiful and elegant appearance. 2. The hydraulic system device has the advantages of light weight, compact structure, and small inertia. 3. Stepless speed regulation can be achieved over a large range. 4. The speed is relatively stable during transmission motion and load changes. Due to this characteristic, almost all grinding machine drivers in metal cutting machines now use hydraulic transmission. 5. The hydraulic device is easy to achieve overload protection by setting overflow valves, etc. At the same time, hydraulic components can self lubricate and have a long service life. 6. The hydraulic system is easy to achieve automation.
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