Key groove sealing structure of drum gear coupling

Abstract

The invention relates to a key groove sealing structure of a drum gear coupling. The key groove sealing structure of the drum gear coupling comprises shells and sleeves, wherein the shells are provided with inner teeth, the sleeves are provided with outer teeth, and each shell is connected with a shaft through a key. A water stop ring is arranged on the outer end face of each sleeve, wherein the water stop ring is connected with the outer end face of the sleeve in a sealed mode, the water stop ring is arranged on the shaft in a sleeved mode and is connected with the shaft in a sealed mode. According to the key groove sealing structure of the drum gear coupling, the keys connected between the sleeves and the shafts and key grooves are all sealed through the water stop ring structure, so that the seal performance is good, and water and other impurities can be effectively prevented from entering a gap. The key groove sealing structure of the drum gear coupling is simple and is installed in an insertion and interference fit mode, so that installation and assembly are both quite convenient.

Description

technical field [0001] The invention relates to a shaft coupling, in particular to a keyway sealing structure of a drum-shaped gear coupling, and belongs to the technical field of shaft coupling sealing. Background technique [0002] In the prior art, the drum-shaped gear coupling consists of two shells with internal teeth and two sleeves with external teeth. The internal teeth and the external teeth are meshed and rotated. The two shells are connected together with bolts. A sealing ring is arranged between the shell and the sleeve. The sleeve and the shaft are connected by a key. A keyway is provided on the inner wall of the sleeve and on the shaft. Insert the key into the keyway to connect the sleeve and the shaft. After installation, there will be a certain gap between the key and the keyway. between is not sealed. [0003] In the prior art, the keyway is sealed by a metal anti-rotation washer at the small end of the tapered shaft, and the anti-rotation washer simultane...

AI Technical Summary

Problems solved by technology

However, the existing sealing technology only seals one end of the keyway. When there is water in the actual use environment, the water will enter the gap of the keyway from the other end of the keyway, which will cause corrosion of the coupling and the keyway of the motor / gearbox, and then damage

Moreover, the existing sealing technology is more suitable for couplings with grease lubrication. If oil lubrication is used, the sealing safety margin is lower and the risk is greater

Images