| 摘要 |
A reverse rotation control device of the slab tongs key is provided to prevent the safety accident in advance and to maximize the effectiveness of the work. A reverse rotation control device of the slab tongs key comprises a housing(110) in which the top cam(120) and bottom cam are connected, a tongs key in which the jaw(141) is formed in the bottom part, a tongs key pin rotating the tongs key, a tongs key holder(160) in which the projection(161) of is formed so that the jaw is tightened and separated away from according to the rotation of the tongs key, a latch gear part(142) formed at the bottom of the tongs key, an insertion hole(131b) at the bottom of bottom cam, a connecting part in which the nut hole(131a) is equipped, a stopper part(200) interacting with the latch gear part of the tongs key and controlling the reverse rotation of the tongs key. |
