The film, created as a teaching aid for vocational school students, examines in detail the design of the main components of the hydraulic drive of the single-bucket excavator model EO3322.
An excavator digs a hole.
A single-bucket excavator with a hydraulic drive.
Operation of an excavator bucket.
Hydraulic diagram of an electric drive.
A cartoon explaining the main components of a hydraulic drive.
Connection between the engine and the hydraulic pump.
Hydraulic motor.
Hydraulic cylinders.
Pipelines.
Pumps.
All of these are components of a hydraulic drive.
Gear pump.
The main functions of a hydraulic pump.
A cartoon explaining the structure and operation of a gear pump.
Rotary piston pumps.
A cartoon explaining the operating principle of rotary piston pumps.
A rotary piston pump consists of a drive shaft supported by three ball bearings.
The shaft ends with a flange into which the connecting rods are mounted.
A cylinder block is mounted on the central pin.
Distribution disk.
A section of a rotary piston pump is shown.
A cartoon showing the operating principle of an adjustable pump.
A cartoon showing the operation of twin axial piston pumps.
Pump samples.
Gear hydraulic motor.
Cartoon showing how to transform a gear hydraulic pump into a hydraulic motor.
Samples of hydraulic motors.
Samples of rotary piston hydraulic motors.
Rotary piston hydraulic motors are divided into two groups, axial piston and radial piston.
Sectional image of radial piston motors.
Explanations of the motor design.
Cartoon explaining the operation of radial piston motors.
Excavator, Hydraulic pumps, Hydraulic motors
Shown is a hydraulic cylinder used in the design of an excavator.
Cartoon showing the operating principle of a single- and double-acting hydraulic cylinder.
Model of an excavator control circuit.
Shown in a disassembled state is a sectional hydraulic distributor with a parallel connection circuit for the spools and a flow circuit for unloading the pumps.
Cartoon showing the operation of the hydraulic distributor.
Excavator servo control.
Cartoon showing the operation of the servo control system.
Operating diagram of a hydraulic drive with servo control.
Safety valves.
They are installed in hydraulic distributors, hydraulic pumps, hydraulic motors and filters.
Cartoon explaining the operating principle of the valve.
Hydraulic circuit of a hydraulic distributor with pressure-reducing valves.
Cartoon explaining the operating principle of a pressure-reducing valve.
Cartoon explaining the operating principle of a check valve.
The concept of a throttle.
Cartoon explaining the operating principle of a throttle in an excavator.
Operation of an excavator.
Excavator, Hydraulic cylinders, Servo control, Valves, Throttles