三角胶带传动由于其独特的优点,在我国目前大量生产的小四轮拖拉机中得以广泛应用。但据调查和用户反映表明,多数三角胶带达不到国家规定的使用寿命,在 GB1171—74《三角胶带》中,规定其使用寿命为3500小时,但现产品一般实际使用寿命为1000～1500小时,个别仅500～800小时。三角胶带早期损坏有三个原因:产品质量差;装配不当;用户不按规定使用、调整。从表1、表2不仅可以看出三角胶带使用寿命较低,且直接受其影响的变速箱第一 Triangle belt drive because of its unique advantages, in our current mass-produced small four-wheel tractors to be widely used. However, according to the investigation and the user’s feedback, the majority of apex tapes can not reach the service life stipulated by the state. In the GB1171-74 “apex tape”, the service life is set at 3500 hours, but the actual service life of the products is generally 1000 to 1500 hours , Individual only 500 ~ 800 hours. Triangular tape early damage for three reasons: poor product quality; improper assembly; users do not use the provisions of the adjustment. From Table 1, Table 2 can not only see the delta tape life is low, and directly affected by the first gearbox