The classification of hydraulic JB cylinder, composition and processing is introduced

Hydraulic JB is a kind of hydraulic cylinder actuators, through convert hydraulic energy into mechanical energy to do work, general its movement for the straight line reciprocating movement or oscillating motion. With the hydraulic cylinder for reciprocating motion is good, the smooth movement, for example, can discharge reduction gear, etc. 。 Classification of hydraulic cylinder can be divided into four categories: ( ) Piston type single rod hydraulic cylinder piston rod at one end only. Piston can only one-way movement, the movement must be completed by the external force to the opposite direction. ( ) Plunger plunger hydraulic cylinder is a single acting cylinders, by fluid pressure can only achieve a direction of movement, plunger return depends on other external force or plunger self-respect. When piston weight often larger, horizontal easily droop due to gravity, cause the seals and leads to uneven wear, so its vertical use more advantageous. ( ) Telescopic telescopic hydraulic cylinder with secondary or multistage piston, telescopic hydraulic cylinder piston out sequential from big to small, and is generally grew up racing back order. Telescopic cylinder can realize a long trip, and when retracted length is shorter, more compact structure. This kind of hydraulic cylinder is often used in engineering machinery and agricultural machinery. By a movement of the piston, the piston of successive movement, the output speed and output force are changing. ) Swing swing hydraulic cylinder is the output torque and reciprocating motion of the actuating element, also called swing hydraulic motor. A single leaf and double leaf in two forms. Stator block fixed on the cylinder body and blades and rotor together. According to the feed direction, the blade will be reciprocating swing drive the rotor. 。 Of the hydraulic cylinder by cylinder and cylinder head, piston and piston rod commonly, sealing device, buffering device and exhaust system, buffer device with exhaust device depending on the specific applications, other devices are necessary. 。 Processing cylinder hydraulic cylinder, as mining monomer pillar, a major part of the hydraulic support, barrel, and other products, the processing quality directly affect the entire product life and reliability of the basic characteristics of the cylinder is the deep hole processing. USES the rolling processing, due to the surface residual compressive stress of surface layer have help to closed surface tiny crack, hinder the expansion of the erosion. So as to improve the surface corrosion resistance, and can delay fatigue cracks or expand, and thus improve the fatigue strength of the cylinder. Roll forming, by forming a layer of cold work roll surface hardening layer, reducing the grinding pair of elastic and plastic deformation of the contact surface, thus improve the wearability of the inner wall of the cylinder, at the same time avoid the burn caused by grinding. After rolling, the decrease of the surface roughness value, can improve the properties.