Multi-stage Cylinder

This multi-stage hydraulic cylinder is composed of two or more piston cylinders, mainly composed of parts such as cylinder head, sleeve, piston, etc. There are inlet and outlet ports a and B at both ends of the cylinder barrel. When the oil enters port A and returns to port B, the first stage piston with a larger effective area is pushed and the smaller second stage piston moves.

Due to the constant flow rate entering port A, a piston with a large effective area has a low speed high thrust, while the opposite is a high speed low thrust. If there is oil in port B and return oil in port a, the auxiliary piston will first return to the end point, and then the first piston will return, according to its structural design. There are various forms of connection between the cylinder block and the cylinder, including pull rod connection, flange connection, inner half ring connection, welding connection, etc. Welding connection is chosen here. The connection between the piston and piston rod of this multi-stage hydraulic cylinder mostly adopts a threaded connection structure. The threaded connection structure used in this structure is simple and practical, and the clamping key connection mechanism is suitable for cylinders with high working pressure. Therefore, the threaded connection structure is selected from various factors.

Multi stage hydraulic cylinders have an impact on the cylinder body due to factors related to mechanical force and safety factor. And this impact is significant, as the hydraulic cylinder loses its normal working ability due to excessive pressure and is damaged. In order to ensure the strength of the cylinder body, appropriate safety factors must be considered. There are three forms of water supply that we need to be familiar with.

The working stroke of this multi-stage hydraulic cylinder can be very long, suitable for situations with limited installation space and long stroke requirements, such as the telescopic arm of a dump truck. As the telescopic hydraulic cylinder gradually extends, the effective working area gradually decreases and the extension speed gradually increases; When the external load is constant, the working pressure of the hydraulic cylinder gradually increases. At this point, it is important to note that the elongation of a single acting telescopic hydraulic cylinder depends on oil pressure, and the contraction depends on its own weight or load. This multi-stage hydraulic cylinder is also suitable for situations where the cylinder body tilts or rotates vertically.

The oil cylinder is a hydraulic actuator that achieves reciprocating motion in multi-stage hydraulic cylinders. The utility model has a simple structure, reliable operation, convenient operation and maintenance, and good low-speed stability. Therefore, it has been widely used in the industrial production sector. Mainly used in construction machinery, excavators, and other large-scale chemical machinery, with costs in various aspects of our lives.

 

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