Nylon Gear Coupling

Structure of Nylon Gear Coupling

Vibration analysis is one of the techniques for predicting misalignment of couplings. It can judge the gradual change trend of equipment status. However, when judging whether a piece of equipment is in a misalignment state, it needs a lot of previous data and cases for reference, and it is necessary to distinguish Whether it is a bearing, lubricating oil, coupling, or a fixed connection problem, there are certain limitations. Infrared photography technology can distinguish overheated parts such as bearings, motor housings, and couplings when the equipment is not in good condition, and determine the alignment error of the coupling, combined with other prediction technologies such as vibration analysis, the effect will be better.

The nylon gear coupling is composed of an inner ring gear with the same number of teeth and a flange half coupling with outer teeth. External teeth are divided into two tooth shapes: straight teeth and drum-shaped teeth. The so-called drum-shaped teeth are made of spherical surfaces. The center of the spherical surface is on the gear axis. The tooth side clearance is larger than that of ordinary gears. Allowing a larger angular displacement (compared to the straight tooth coupling), can actually affect the contact conditions of the main tooth, improve the ability to transmit torque, and prolong the service life. When the gear coupling is working, the two shafts produce relative displacement, and the tooth surfaces of the inner and outer teeth periodically slide relative to each other in the axial direction, which will inevitably cause tooth surface wear and power loss. Therefore, the gear coupling needs to be well lubricated and sealed. work in the state.

Nylon gear couplings are simple in structure, easy to maintain, have cushioning and vibration reduction performance, good performance, stable performance, and low requirements on machining accuracy. They can be used in various horizontal and vertical transmission shafts with small and medium power Gear pumps, hot oil pumps, heavy oil pumps, sewage pumps, centrifugal pumps and gear oil pumps, etc. Working temperature -35～100℃. The inner ring gear is made of MC nylon, and the outer gear sleeve is made of No. 45 forged steel, which has the advantages of small size, light weight, small moment of inertia, low noise, convenient assembly and disassembly, and no lubrication. The shaft hole and keyway are manufactured according to the national standard GB3852-83 "Coupling Shaft Hole and Keyway Form and Size".

Nylon inner gear coupling is a new product of the company and has been widely used to replace traditional old-fashioned couplings. It is suitable for flexible transmission between shafts and shafts. It allows large axial, radial and angular displacements. It has a simple structure and Convenient maintenance, easy disassembly and assembly, low noise, small loss of transmission efficiency, long service life and low cost, are very popular among users. When working, the two shafts produce relative angular displacement, and the tooth surfaces of the inner and outer teeth periodically slide relative to each other in the axial direction, which will inevitably cause tooth surface wear and power consumption. Therefore, the gear coupling must work in a good and sealed state. The gear coupling has a small radial size and a large load-bearing capacity, and is often used for shafting transmission under low-speed and heavy-load conditions. The gear coupling with suitable precision and dynamic balance can be used for high-speed transmission, such as the shafting of a gas turbine transmission. Because the angular compensation of the drum gear coupling is greater than that of the straight gear coupling, the drum gear coupling is widely used in many regions, and the straight gear coupling is an obsolete product, and the chooser should try not to choose it.