| 摘要 |
A piece of multi-purpose ratchet pipe pliers comprise a handle, an upper jaw clamp, a pin shaft, a torsion spring, an arc-shaped tooth surface insert block and an upper tooth surface inert block, wherein the upper jaw camp is hinged on the handle through the pin shaft, the handle is provided with an assembly slot, the torsion spring is arranged in the assembly slot, one driving end of the torsion spring is arranged on the upper jaw clamp, the other end of the torsion spring is arranged at the bottom of the assembly slot, the arc-shaped tooth surface insert block comprises an arc-shaped tooth surface and a lower tenon, and the head of the handle is provided with a lower mortise, the lower tenon is fit with the lower mortise to fix the arc-shaped tooth surface insert block on the handle; the upper tooth surface insert block comprises an upper tooth surface and an upper tenon, the upper jaw clamp is provided with an upper mortise, the upper mortise is fit with the upper tenon to fix the upper tooth surface insert block on the upper jaw clamp, the anti-skip teeth on the handle and the upper jaw clamp are disassembled and replaced, the whole plier opening can clamp the pipe through the tooth surfaces at three different directions for realizing anti-skip function, the upper jaw clamp is reasonable in structure, light in weight and good in strength, and the whole multi-purpose ratchet pipe pliers are good in performance, low in manufacturing cost, long in service life and wide in function. |
