Analysis of Broken Tooth of Axle Wheel for Electric Hoist (Sliding)
Electric hoist (sliding) is a kind of hoist commonly seen in various production sites. During the installation, use and maintenance process, broken wheel teeth often occur, which seriously affects the safe and efficient operation of the hoist. In order to analyze the cause and solve the problem of broken wheel teeth, this paper will analyze the root cause of the broken wheel teeth.
Wheels are the main components of electric hoist (sliding). When the wheel teeth are in contact with the other parts such as chain and hoist frame, wheel teeth breakage appears because of reasons such as the material of wheel teeth and insufficient force. These above may cause wheel teeth breakage.
Firstly, the refractory property of wheel teeth. Wheel teeth are made of hardened steel which has strong wear resistance. However, due to the special fight of wheel teeth, it is required to harden at a very high temperature, which makes the wheel teeth have poor toughness, resulting in often broke wheel teeth during contact with other parts.
Second, the lubricant of wheel teeth. The lubricant of wheel teeth can effectively reduce the wear and tear of wheel teeth, but insufficient lubrication and poor quality of lubricant can all cause wheel teeth breakage.
Third, the force of wheel teeth. Insufficient force will also cause wheel teeth breakage during reciprocating movement and frequent starting, so it is necessary to keep the wheel teeth force appropriate and reduce the impact on the wheel teeth by reducing the reciprocation frequency of the wheel teeth and adjusting the initial speed of starting.
Fourth, the material of wheel teeth. The material of wheel teeth also has something to do with wheel teeth breakage, so the material of wheel teeth should be selected properly during installation and use.
Fifth, the dimensional accuracy of wheel teeth. The dimensional accuracy of wheel teeth must strictly meet the design requirements because too tight dimensional accuracy may cause wheel teeth breakage due to insufficient force, while too loose dimensional accuracy tends to reduce the bearing capacity of wheel teeth and increase the gap, resulting in wheel teeth breakage.
Finally, the attachment process of wheel teeth. If the wheel teeth are improperly installed, the wheel teeth will be distorted by the contact force and even broken.
The above are the causes of broken wheel teeth of electric hoist (sliding). In order to solve this problem, it is necessary to improve the refractory property and lubricating property of wheel teeth and to ensure the accuracy of the installation of wheel teeth. Moreover, it is also necessary to check the force, the material and the size of the wheel teeth periodically and carry out related maintenance to ensure the service life of the wheel teeth.
