DRAFT GEAR

摘要

A lower locking pin body (1) for the hinge joint between a lower locking pin (5) and a lower locking pin hook (6) has a suspending hole (11, 12) of a coupler lock lifter (20) to facilitate it rotating surrounding the lower locking pin lock (6) under the effect of the hole. There are two coupler suspending holes (11, 12) which are respectively arranged on each side ends of the lower locking pin body (1) to facilitate the workers opening the coupler on either side of a car. A two-side operating coupler (10) with above said lower lock pin body (1) and a draft gear are provided, wherein the draft gear also includes two lock lifters (20) and two lock lifter seats (30). The lock lifters (20) are mounted into a key-shaped hole (31) of the lock lifter seats (30), and the lock lifter (20) has a limiting segment (21) on the matched position. Two hook head ends of the lock lifters (20) pass respectively out from the key-shaped holes (31) of coupler lock lifter seats (30) and hang with the coupler lock lifter (20) suspension hole (11, 12) of the two-side operating coupler. It has clearance between the limiting segment (21) of the coupler lock lifter (20) and a stripe-shaped hole wall of the key-shaped hole (31).