27
2017
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07
Three original parts of hydraulic Machine
Classification:
【Summary】Gear oil pump and tandem pump (including external gear and internal gear) two types of structure.
1. Power Components
Power components refer to various hydraulic pumps.
1. Gear oil pump and tandem pump (including external gear and internal gear) two types of structure.
2. Vane oil pumps (including single-stage pumps, variable pumps, double-stage pumps, double-stage pumps).
3. The plunger pump is divided into axial plunger pump and radial plunger pump. The axial plunger pump has fixed pump, variable pump, (variable pump is divided into manual variable and pressure compensation variable, servo variable, etc. Type) from the structure is divided into end oil distribution and valve oil distribution two oil distribution methods, and the radial piston pump oil distribution type is basically valve type oil distribution.
Second, the control element
Various hydraulic valves belong to the control element.
1. Pressure control valve
(1) Pressure control valves are:
Overflow valve, electromagnetic overflow valve, unloading overflow valve, one-way overflow valve and pressure relief valve, one-way pressure relief valve, sequence valve and one-way sequence valve, etc.
(2) The scope of sequence valve is divided into:
Seven types of direct control sequence valve, remote control sequence valve, unloading valve, direct control one-way sequence valve, remote control one-way sequence valve, direct control balance valve and remote control balance valve, as well as pressure relays and various pressures Control valves are used in various types of hydraulic systems in various types of hydraulic transmission systems according to different conditions and characteristics of use.
2. Directional control valve
Directional control valves include:
There are many types of check valves, hydraulic control check valves, electromagnetic directional valves, electromagnetic ball valves, electromagnetic directional valves, manual directional valves and manual rotary valves.
3. Flow control valve
Flow control valves are:
Throttle valve, one-way throttle valve, speed regulating valve, one-way speed regulating valve and stroke throttle valve, one-way stroke throttle valve, one-way stroke speed regulating valve, etc.
3. Actuator
The actuator has hydraulic cylinder and hydraulic motor.
1. Hydraulic cylinder
Vehicle cylinders, single-acting cylinders, hydraulic machine cylinders, swing cylinders, single-acting multi-stage cylinders (sleeve cylinders), double-acting multi-stage cylinders and spring return cylinders are also available.
2. Hydraulic motor
Hydraulic motors include gear motors, vane motors, plunger motors, etc., which means that almost fixed oil pumps can theoretically function as motors.
3. Low speed high torque hydraulic motor
(1) Internal mesh orbit motor;
(2) Internal curve hydraulic motor, two types of shaft rotation and shell rotation;
(3) Double plunger axial plunger motor;
(4) Radial plunger hydraulic motor;
(5) Ball plug type low speed high torque hydraulic motor;
(6) Statically balanced low speed, high torque and low hydraulic motor.
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