The Indian hydraulics engineering industry has been the key player in the country’s rapid economic development, in both the arenas of infrastructure and production. In particular, the segment of earthmoving and construction equipment (ECE) such as hydraulic excavators, wheel loaders, backhoe loaders, motor graders, vibratory compactors, cranes, dumpers, tippers, forklifts trucks, dozers, pavers, batching plants, etc. is based on applications of hydraulics technology. Over the past two decades, the ECE has made enormous progress and grown both in size and diversity.
The driving force in a hydraulic system is the electromechanical actuator, a tiny component that is capable of performing Titanic feats. It is similar to mechanical actuators except that the control knob or handle is replaced with an electric motor. Rotary motion of the motor is converted to linear displacement. Read more
What are hydraulic cylinders?
A hydraulics cylinder is a mechanical actuator that generates force created by a compressed liquid locked in a cylindrical vessel. They are a variety of application of such cylinders as these are used in manufacturing machines, construction machines and garbage dump trucks. The fluid of these cylinders is an oil-based lubricant to facilitate the back and forth movement of the barrel. The barrel exerts pressure on the fluid generating force that is ten times greater than the force exerted on the fluid.
What are the different parts and variants of hydraulic cylinders?
A standard hydraulic cylinder can be broadly divided into three parts. First is the barrel itself, second is the base or the cap and lastly the end of the cylinder. The role of barrel is to keep the pressure of the cylinder intact. The further classification of the parts may be listed as piston, piston rod, and seal gland. The role of Piston is to maintain the back and forth movement inside the barrel, it also varies the pressure inside the barrel. The piston rod is a hard piece of chrome attached to the piston that is connected with the cylinder adjoining the end of the rod.
The seal gland is prefixed at the top of the cylinder and prevents leakage of the compressed oil keeping the pressure of the barrel as it is. A mini hydraulic power unit will include all these basic parts. Different types of cylinders employ the type of parts with different operating pressure. On the basis of the components and its specifications, the hydraulic cylinder is classified as Multistage, Telescopic, Ram and cable cylinders.