The review of the most common fuses to limit the torque used on rotary forestry machines used in difficult conditions, including felling, is performed. A review of the designs of the most common fuses on these machines for limiting the torque: pin, cam and friction is carried out. Both the advantages and disadvantages of these fuses are considered. The necessity of using more advanced fuses for torque limitation on rotary forestry machines with a firing accuracy factor less than that of the standard torque fuses currently used is identified. It is proposed to use fuses with increased accuracy of operation with inclined grooves and pins on rotary forestry machines. The design of a promising fuse for limiting torque using inclined grooves and pins is considered. The technique of an experiment to study the accuracy factor of the fuse at a specially designed stand is presented. The results of experiments to identify the dependence of the accuracy factor on the angle of the groove of the fuse. Further ways are suggested for improving the design of a fuse with increased accuracy of operation with inclined grooves and pins.

审查了最常见的保险丝，以限制在包括砍伐在内的困难条件下使用的旋转林业机器上使用的扭矩。审查了这些机器上用于限制扭矩的最常见保险丝的设计：销、凸轮和摩擦。这些保险丝的优点和缺点都被考虑在内。确定了在旋转林业机械上使用更先进的熔断器来限制扭矩的必要性，其点火精度因子低于当前使用的标准扭矩熔断器。建议在旋转林业机械上使用具有倾斜凹槽和销的操作精度更高的熔断器。考虑使用斜槽和销来限制扭矩的有前途的保险丝的设计。介绍了在特殊设计的支架上研究熔断器精度系数的实验技术。实验结果确定了精度因子对保险丝凹槽角度的依赖性。提出了进一步的方法来改进具有倾斜凹槽和销的操作精度增加的熔断器的设计。