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1、 Working principle of hydraulic transmission hydraulic transmission principle:

The oil is used as the working medium to transmit power through the pressure inside the oil.

1. Power part - converts the mechanical energy of the prime mover into the pressure energy (potential energy) of the oil. For example: various hydraulic pumps.

2. Executive part - convert the oil pressure energy input by the hydraulic pump into the mechanical energy driving the working mechanism. For example: various hydraulic cylinders and hydraulic motors.

3. Control part - used to control and adjust the pressure, flow and flow direction of oil. For example, various pressure control valves and flow control valves.

4. Auxiliary part - connect the first three parts together to form a system for oil storage, filtration, measurement and sealing. For example: soft and hard pipelines, connectors, oil tanks, oil filters, accumulators, seals, display instruments, etc.

2、 Working principle of hydraulic cylinder:

First understand the five most basic components:

1. Cylinder barrel and cylinder head

2. Piston and piston rod

3. Sealing device

4. Buffer device

5. The working principle of each cylinder of the exhaust device is similar. Take a manual jack for example. Its original work (the jack is actually the simplest cylinder) makes the hydraulic oil enter the cylinder through a single valve through the manual pressurization rod (hydraulic manual pump). At this time, the hydraulic oil entering the cylinder cannot go back because of the single valve, forcing the cylinder rod upward, Then, continue to make the hydraulic oil enter the hydraulic cylinder continuously during the work, so as to rise continuously. When it is necessary to lower, open the hydraulic valve to make the hydraulic oil return to the oil tank.