Novel braking pincers jar pore structure

The utility model relates to a novel braking pincers jar pore structure, this structure clamps the body including brakeing, braking pincers body on be equipped with braking pincers jar hole, braking pincers jar hole on be equipped with lubrication member. Lubrication member for establishing the heavy platform in the downthehole wall both sides of braking pincers jar. The beneficial effects of theutility model are that: the utility model discloses a structure that changes braking pincers jar hole improves in the existing design that the clearance of downthehole wall of jar and piston is little, the lubricated distance of brake fluid and the effect is limited, the resistance to slippage of piston scheduling problem bigger than normal, and its advantage lies in making between braking pincersdownthehole wall of jar and the piston lubricatedly abundant, has effectively reduced the resistance to slippage of piston and has brakied the dragging moment that clamps the assembly, has improved the performance of whole st