为了降低劳动强度,提高工作效率,我们改进了一种反向锁紧扳手,如图所示。这种扳手结构简单,不易因铁屑掉入而影响工作,其中锁轮3还可以针对螺栓或螺母六方体的不同尺寸更换,在使用中能根据需要任意调整角度。当拆卸螺栓或螺母时,只需把扳手翻转180°即可使用。滚柱4比一般棘轮扳手中棘爪的承受力大。使用实践证明该扳 In order to reduce labor intensity and improve work efficiency, we have improved a reverse locking wrench, as shown. The utility model has the advantages of simple structure and less impact on the work due to falling iron filings. The lock wheel 3 can also be changed according to the different sizes of the hexagonal bolts or nuts, and the angle can be arbitrarily adjusted in use according to the needs. When removing bolts or nuts, just flip the wrench 180 ° to use. Roller 4 than the general ratchet wrench in the tolerance. The practice proved that the pull