Hydraulic tools are the organic combination of hydraulic system and common tools as a whole. The powerful hydraulic power will be converted into reciprocating linear motion, rotary motion, cycloid motion and other mechanical movements. A complete hydraulic tool system consists of five parts, namely, power element, actuator element, control element, auxiliary element and hydraulic oil. Hydraulic tools include: hydraulic wrench, special electric pump for hydraulic wrench, hydraulic jack, hydraulic bolt stretcher, hydraulic flange separator, hydraulic nut breaker, hydraulic rama, etc. Hydraulic tools have the advantages of high efficiency and convenience.
The function of the power element is to convert the mechanical energy of the prime mover into the pressure energy of the liquid. Refers to the oil pump in the hydraulic system, which provides power to the entire hydraulic system. Hydraulic pumps generally have gear pumps, vane pumps and plunger pumps.
The function of actuators (such as hydraulic cylinders and motors) is to convert the pressure energy of liquid into mechanical energy, and drive the load to move in a straight line or in a rotary direction.
Control elements (various hydraulic valves) control and regulate the pressure, flow and direction of the liquid in the hydraulic system. According to the different control functions, hydraulic valves can be divided into pressure control valves, flow control valves and direction control valves. Pressure control valves are divided into relief valves (safety valves), pressure relief valves, sequential valves, pressure relays, etc. Flow control valves include throttle valves, adjusting valves, shunt collector valves, etc. Direction control valves include one-way valves, hydraulic control one-way valves, shuttle valves, reversing valves, etc. According to different control modes, hydraulic valves can be divided into switching control valves, fixed value control valves and proportional control valves.
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