Pneumatic lifting rod multi-section cylinder structure composition and working principle

Pneumatic lifting rod multi-section cylinder structure group


The multi-section cylinder of the pneumatic lifting rod is composed of a cylinder barrel, an end cover, a piston, a piston rod and a seal.

1. Cylinder tube
The inner diameter of the multi-section cylinder of the pneumatic lifting rod represents the size of the cylinder output force. The piston should slide smoothly back and forth in the cylinder barrel, and the surface roughness of the inner surface of the cylinder barrel should reach Ra0.8um. For steel tube cylinders, the inner and outer surfaces should also be plated with hard chromium to reduce friction resistance and wear and prevent corrosion. In addition to using high-carbon steel pipes, the cylinder barrel materials are also made of high-strength aluminum alloy and brass. The multi-section cylinder of the small pneumatic lifting rod uses stainless steel tubes. For cylinders with magnetic switches or cylinders used in corrosion-resistant environments, the cylinder barrel should be made of stainless steel, aluminum alloy or brass.

2. End cap
The multi-section cylinder end cover of the pneumatic lifting rod is provided with intake and exhaust ports, and the oil type is also equipped with a buffer mechanism in the end cover. The rod side end cover is equipped with a sealing ring and a dust ring to prevent air leakage from the piston rod and external dust from mixing into the cylinder. There is a guide sleeve on the rod side end cover to improve the cylinder's guidance accuracy, absorb a small amount of lateral load on the piston rod, reduce the amount of downward bending of the piston rod when it extends, and extend the service life of the cylinder. The guide sleeve generally uses sintered oil-containing alloy and forward-inclined copper castings. The multi-section cylinder end cover of the pneumatic lift rod used to be malleable iron. Nowadays, in order to reduce weight and prevent rust, aluminum alloy die casting is often used, and some micro cylinders are made of brass.



3. Piston
The multi-section cylinder piston of the pneumatic lifting rod is a pressure-bearing part in the cylinder. In order to prevent the left and right chambers of the piston from blowing air to each other, a piston sealing ring is provided. The wear-resistant ring on the piston can improve the guidance of the cylinder, reduce the wear of the piston seal ring, and reduce friction resistance. The wear-resistant ring length uses polyurethane, polytetrafluoroethylene, cloth-composite resin and other materials. The width of the piston is determined by the size of the sealing ring and the necessary length of the sliding part. The sliding part is too short, which can easily lead to early wear and jamming. The raw materials of the piston are commonly aluminum alloy and cast iron. The multi-section cylinder piston of the small pneumatic lifting rod is made of brass.

4. Piston rod
The multi-section cylinder piston rod of the pneumatic lifting rod is the most important force-bearing part in the cylinder. Generally, high carbon steel is used, and the surface is plated with hard chromium, or stainless steel is used to prevent corrosion and improve the wear resistance of the sealing ring.

5.Sealing ring
The seal of the component at the reversing or reciprocating motion is called a dynamic seal, and the seal of the stopper part is called a static seal.





Working principle of multi-section cylinder of pneumatic lifting rod


In terms of the working principle and technical characteristics of the multi-section cylinder, when in use, air is injected and exhausted into the cylinder to achieve the rising and falling movements of each section of the cylinder. Each section of the cylinder is made of high-quality aluminum alloy material. The entire manufacturing process has gone through multiple processes such as extrusion molding, cold drawing, honing, machining, anodizing, etc., and has undergone strict inspection procedures to ensure the quality of the cylinder. . The advantages of the multi-section lifting cylinder are: simple structure and precise manufacturing process, so it is easy to use and has stable performance.





The above is an introduction to the structural composition and working principle of the multi-section cylinder of the pneumatic lifting rod. If you want to know more related information, please log in to Sunway Pneumatic www.diancifa.cc.