Type hydraulic cylinder

According to the form of the structure of a conventional hydraulic cylinder, which can be divided into three types: structural forms sanitation garbage truck hydraulic cylinder varied, there are a variety of classification methods: by movement can be divided into linear reciprocating and rotary swing ; by the liquid-pressure situation can be divided into single-acting and double-acting; form of the structure can be divided into piston, piston, multi-stage telescoping; rack and pinion, etc; can be divided according to the installation form for rod, earrings, foot, hinge shaft; pressure level can be divided according to 16Mpa, 25Mpa, 31.5Mpa so on.

Hydraulic cylinder piston

Single rod cylinder is only one end of the piston rod. As shown is a single hydraulic cylinder piston. Both ends of the import and export of oil through ports A and B can pressure oil or oil return to two-way movement, it is known as double-acting cylinders.
Only one-way movement of the piston, the opposite direction from the force required to complete. But its stroke hydraulic cylinder piston generally more big.

Hydraulic cylinder piston works

Hydraulic cylinder piston rod can be divided into single and double rod two structures fixed by way of fixed and fixed two cylinder piston rod, according to the role of fluid pressure in the case of a single-acting and double-acting. In a single-acting hydraulic cylinder, the pressure oil chamber is for a hydraulic cylinder, by hydraulic pressure of the cylinder to achieve a single direction of movement, the movement in the opposite direction by an external force (e.g. spring force, its own weight or external loads, etc.) to achieve; and bis acting hydraulic cylinder piston movement in both directions through the two chambers alternately into the oil, by the action of hydraulic pressure to complete.

As shown for the double-acting hydraulic cylinder piston rod single schematic. There is only one side of the piston rod, and thus the effective role of different areas of the two chambers. Are the same, different chamber into the oil, the piston velocity at different fuel supply; load force to be overcome in the same, different chamber into the oil, the oil pressure required for different, or when the system pressure settings, sanitation different garbage truck hydraulic cylinder movement in both directions to overcome the force of the load.

Piston hydraulic cylinder

(1) piston hydraulic cylinder is a single-acting hydraulic cylinder, hydraulic pressure can only be achieved by a direction of movement of the plunger return to rely on other external or plunger weight;
(2) does not support the piston and cylinder liner rely on contact, so that the liner easily processed, it is suitable for making long-stroke hydraulic cylinders;
(3) working the plunger of the total pressure, so it must have sufficient rigidity;
(4) tend to be larger piston weight, easy to sag due to its own weight when placed horizontally, causing the seal and guide unilateral wear, so the vertical use of more favorable.

Telescopic hydraulic cylinders

Telescopic hydraulic cylinder piston has two or more stages, telescopic hydraulic cylinder piston out of style in descending order, while the load is normally retracted the order from small to large. Telescopic cylinders can achieve a longer stroke, while retraction length is shorter, more compact structure. Such cylinders commonly used in the construction machinery and agricultural machinery. There are a plurality of primary motion of the piston, each piston during successive movement, the output speed and output power are changing.

Swing cylinder

Swing hydraulic cylinder is an actuator output torque and to achieve a reciprocating motion, also called the swing hydraulic motor. There are two forms of single and double leaf blades. The stator is fixed to the cylinder block, and the blades and rotor are connected together. According inlet direction, will drive the rotor blades for reciprocating swing.