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本文叙述了大型减速齿轮装置进行负载试验的一些结果。试验装置是轴间距为720毫米的动力封闭式齿轮试验台。试验齿部用同等材料和加工工艺的五组汽轮机减速齿轮(人字齿轮)。试验内容以负载耐久试验为中心,对齿部温度和齿根应力进行测试,并对试验中出现的情况进行分析。试验结果,无修正剃齿齿轮在负载重复10~8次,K=350磅/英寸~2后损坏。修正剃齿齿轮在负载重复5×10~7次,K=400磅/英寸~2后损坏。同样,剃齿和珩磨齿轮成功地进行了 K=350磅/英寸~2的负载试验。点蚀出现在 K=250～350磅/英寸~2。因此,可认为齿轮的极限弯曲强度为300～400磅/英寸~2。点蚀极限约为300～350磅/英寸~2。大型齿轮往往在点蚀破坏前就折断了。但是运转条件和安装情况不同,其结果也显著不同。
This paper describes some of the results of large-scale reduction gear device load test. The test rig is a power-sealed gear test stand with an axial spacing of 720 mm. Test gear with the same material and processing five sets of turbine reduction gear (Herringbone gear). Test content To the load durability test as the center, the tooth temperature and tooth root stress test, and the test case analysis. Test results, unmodified shaving gear in the load repeated 10 to 8 times, K = 350 pounds / inch ~ 2 after damage. Correct shaving gear damage 5 × 10 ~ 7 times after the load, K = 400 pounds / inch ~ 2. Similarly, shaving and honing gears successfully performed a load test at K = 350 psi. Pitting occurs at K = 250-350 psi. Therefore, it can be considered that the ultimate bending strength of the gear is 300 to 400 psi. The pitting limit is about 300 to 350 pounds per square inch. Large gears often break before pitting damage. However, the operating conditions and installation conditions are different, the results are also significantly different.