Do you know enough about hydraulic lifting equipment?

Do you know enough about hydraulic lifting equipment?

Hydraulic cylinder introduction

Hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or oscillating motion).

 It has a simple structure and reliable operation. Used to achieve reciprocating motion, no transmission gap, smooth movement, 

so widely used in a variety of mechanical hydraulic system.

The output force of the hydraulic cylinder is proportional to the effective area of the piston and the pressure difference between the two sides. 

Hydraulic cylinder is basically composed of cylinder and cylinder head, piston and piston rod, sealing device, cushioning device and exhaust device.

 The cushioning and venting devices depend on the specific application and the other devices are essential. 

Hydraulic cylinders usually consist of major components such as rear end caps, cylinder barrels, piston rods, piston assemblies, and front end caps. 

To prevent oil from leaking from the hydraulic cylinder or from the high-pressure chamber to the low-pressure chamber,

 there are sealing devices between the cylinder and the end cap, the piston and the piston rod, the piston and the cylinder, 

the piston rod and the front end cap, and a dust-proof device outside the front end cap. 

A cushioning device is also provided at the end of the hydraulic cylinder to prevent the piston from hitting the cylinder head when it is rapidly backing up to the end of its stroke.

An exhaust device is sometimes required.

Hydraulic transmission principle

Oil as the working medium, through the seal volume change to transfer, through the oil internal pressure to transfer power.

1. Power part: the mechanical energy of the prime mover is converted into the pressure energy of the oil (hydraulic energy). For example: hydraulic pump.

2. Hydraulic cylinder manufacturer executive part: the hydraulic pump input oil pressure energy into mechanical energy to drive the working mechanism. 

For example: hydraulic cylinders, hydraulic motors.

3. Control section: used to control and regulate the oil pressure, flow and direction of flow. 

For example: pressure control valves, flow control valves and directional control valves.

4. Auxiliary part: the first three parts connected together to form a system, play the role of oil storage, filtration, measurement and sealing. 

For example: pipes and fittings, tanks, filters, accumulators, seals and control instruments.