Analysis of the application of bevel gears in crushing equipment

All bevel gears have a lot in common in design and manufacture, but those destined for shredders must have certain key characteristics that are not standard in the automotive industry.This phenomenon is frequently observed in the large bevel gear industry today, and these key characteristics are not widely understood in the engineering community, let alone in far fewer gears, and manufacturers should fully understand the technical requirements of these applications.

For pulverizer applications, the working shafts of the gears rely on common bronze bushings to maintain alignment, and these require large oil clearances to operate under boundary lubrication conditions.The wide bearing clearance works with the rotating crushing forces to give the pitch cone of the driven gear a contact path relative to the fixed working centerline of the driving gear.

The traveling contact created on the mating pitch requires special attention: 1) to avoid overload conditions at the end of the gear teeth; 2) to prevent dangerous meshing contact conditions.To avoid these unwanted consequences, the mating parts are machined with additional drums and clearances, and finally tested by a method that simulates the contact path of the driven gear relative to the drive pulley.

The emergence of precision five-axis machine tools has expanded the effective size range of large bevel gears and improved processing efficiency.As a positive result, this new technology has introduced new buyers of large bevel gear manufacturers.Conversely, a broader supplier base also helps to further dilute the already limited understanding of what a shredding application entails.