many designs are possible. the following types of pg电子下载-pg电子游戏are available:hydraulic motors are used for many applications now such as winches and crane drives, wheel motors for military vehicles, self-driven cranes, and excavators. conveyor and feeder drives, mixer and agitator drives, roll mills, drum drives for digesters, trommels and zhongyiyepk kilns, shredders for cars, tyres, cable and general garbage, drilling rigs and trench cutters.
gear and vane motors are used in simple rotating systems. their benefits include low initial cost and high rpm.
a gear motor consists of two gears, the driven gear (attached to the output shaft by way of a key, etc) and the idler gear. high pressure oil is ported into one side of the gears, where it flows around the periphery of the gears, between the gear tips and the wall housings in which it resides, to the outlet port. the gears then mesh, not allowing the oil from the outlet side to flow back to the inlet side.
a vane motor consists of a housing with an eccentric bore, in which runs a rotor with vanes in it that slide in and out. the force differential created by the unbalanced force of the pressurized fluid on the vanes causes the rotor to spin in one direction.
axial plunger motors
for high quality rotating drive systems plunger motors are generally used. whereas the speed of hydraulic pumps ranges from 1200 to 1800 rpm, the machinery to be driven by the motor often requires a much lower speed. this means that when an axial plunger motor (swept volume maximum 2 litres) is used, a gearbox is usually needed. for a continuously adjustable swept volume, axial piston motors are used. piston type. like piston (reciprocating) type pumps, the most common design of the piston type of motor is the axial. this type of motor is the most commonly used in hydraulic systems.
radial piston motors
multilobe cam ring type (e.g. hgglunds or poclain type) has a cam ring with multiple lobes and the piston rollers push outwardly against the cam ring. this produces a very smooth output with high starting torque but they are often limited in the upper speed range. this type of motor is available in a very wide range from about 1 litre/rev to 250 litres/rev. these motors are particularly good on low speed applications and can develop very high power.
hydraulic motors are used for many applications now such as winches and crane drives, wheel motors for military vehicles, self-driven cranes, and excavators. conveyor and feeder drives, mixer and agitator drives, roll mills, drum drives for digesters, trommels and kilns, shredders for cars, tyres, cable and general garbage, drilling rigs and trench cutters.
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