行车重力式夹钳开闭器性能改进

CAPABILITY IMPROVEMENT OF GRAVITY-CLAMP SWITCH OF BRIDGE CRANE

在冶金用途的行车中,夹吊板坯的行车通常会使用夹钳开闭器来控制夹钳闭合,从而吊运板坯。在实际使用中放下板坯后的运行过程中,发生了开闭器脱离连接,夹钳上下部分分离,产生的惯性力突然加载在钢丝绳上,继而传导至小车上,使小车弹离轨道,同时夹钳下部可能撞击地面人员及设备的恶性事故。为了减少事故率,提高生产效率,对夹钳开闭器设计进行改进,通过增设止回机构,从而消除事故隐患,避免事故的发生。

In the metallurgical use of bridge crane, the one for clamping and lifting slab usually use gravity-clamp switch to control the opening and closing of clamp, and then lift slab. In practice, it takes place the switch separating from the clamp after the traveling crane puts down the slab, which means the upper and lower part of the clamp disengage the connection. But the inertial force produced by the separating process suddenly loads on the wire rope, and then transfers to the dolly, which may make the dolly separating from the track, at the same time the serious accidents that the clamp may hit the staff or equipments at the ground may be happened. In order to reduce the accident rate and increase productivity, we design and improve gravity-clamp switch through the addition of cheek mechanism, thereby the danger of accidents is eliminated, and so the accidents will be avoided.