differential cylinder

(differential cylinder,produced by Hengyu Hydraulic Co., Ltd）

differential cylinder are widely used ，because of long service life，smooth movement，high work efficiency.So our company has designed differential cylinder for our customers.

Introduction to differential cylinder:

The main role of the differential cylinder: the differential cylinder is an executive element in the hydraulic transmission system, which is an energy conversion device that converts hydraulic energy into mechanical energy. The hydraulic motor realizes continuous rotary motion, while the differential cylinder realizes reciprocating motion. The structure of the differential cylinder has three categories: piston differential cylinder, plunger differential cylinder, swing differential cylinder, piston differential cylinder and plunger differential cylinder to achieve reciprocating linear motion, output speed and thrust, swing differential cylinder to achieve reciprocating swing, output angular speed (speed) and torque. In addition to the single use of the differential cylinder, two or more can be combined or used in combination with other mechanisms. To fulfill a special function. The differential cylinder has simple structure and reliable operation, and has been widely used in the hydraulic system of machine tools.

Improve the service life of the differential cylinder: it is necessary to maintain the normal clearance of the combined surface of the hydraulic components. When manufacturing or repairing the main parts of the differential cylinder (such as the differential cylinder block, piston rod, etc.), the assembly should be carried out in accordance with the tolerance lower limit of the assembly size, which can well reduce the occurrence of cavitation. If cavitation has occurred in the hydraulic components, only metallographic sandpaper polishing technology can be used to remove cavitation pitting and surface carbon deposits, and general fine sandpaper must not be used for polishing After the differential cylinder is repaired, the hydraulic system should run smoothly for a certain period of time so that the hydraulic oil in the hydraulic system can be fully circulated; If necessary, the differential cylinder inlet pipe (or return pipe) can be disassembled. Make the hydraulic oil overflow to achieve the effect of single differential cylinder exhaust.

The differential cylinder should be used as far as possible to avoid the transverse force, sometimes the piston rod to bear the transverse load is too large, especially do not force or pull the differential cylinder, bite. Elimination method: When installing the differential cylinder, ensure that the axis position of the differential cylinder is consistent with the direction of movement; Make the load borne by the differential cylinder as far as possible through the differential cylinder axis, to avoid the phenomenon of eccentricity.

The body of the differential cylinder on the processing process requirements: the body of the differential cylinder is an important and essential part of the differential cylinder, because it has an irreplaceable role. The processing requirements for this part are very high, requiring that the surface roughness of the differential cylinder after processing should reach 0.4-0.8um, and the coaxiality and wear resistance requirements are also very high.

Answers to some questions about differential cylinder:

How is the cylinder of hydraulic cylinder processed?
As the main parts of hydraulic cylinder, mining single pillar, hydraulic support, gun barrel and other products, its processing quality directly affects the life and reliability of the whole product. Cylinder processing requirements are high, the internal surface roughness requirements are Ra0.4 ~ 0.8&um, the coaxiality, wear resistance requirements are strict. The basic feature of cylinder is deep hole processing, which has always troubled the processing personnel. Due to the residual compressive stress on the surface of the surface layer, the rolling machining is helpful to seal the small cracks on the surface and prevent the expansion of erosion. Thus, the corrosion resistance of the surface can be improved, and the fatigue crack can be delayed or expanded, and the fatigue strength of the cylinder can be improved.

Can multiple identical hydraulic cylinders be supplied with the same supply line?
This can be connected, but there is a disadvantage, that is, the hydraulic cylinder with the minimum pressure is extended first, and then the pressure is higher, and then the higher, until all the hydraulic cylinders are extended, which may not meet the requirements of field use.