A Study on the Dynamic Behavior of Heavily Loaded and High Speed Spiral Bevel Gear (1st Report, Experimental Results of Tooth Root Stress and Temperature of Spiral Bevel Gear during Operation)

摘要

The spiral bevel gears are used widely for as main reduction gears of large drainage pump and helicopter. To reduce the size of reduction gears where large power is transmitted through crossed shafts, it is necessary to increase rotational speed and decrease transmitted torque and load. But, the reasonable and concise guide to design of these heavily loaded high speed spiral bevel gears is not yet obtained. In the present taper, the dynamic behavior of a spiral bevel gear was investigated under large power (18 755 kW) and high speed (～117 m/s) conditions, using a power absorbing gear testing machine, and by measuring the tooth root stresses, and the temperatures. In comparison with these measured date, the dynamic characteristic of heavily loaded and high speed spiral bevel gears become clear.