新型钻杆动力钳的研制

针对大开口齿轮结构形式的钻杆动力钳在扭矩大时,齿轮开口容易变形,引起打滑而咬伤钻具,使用寿命短,不同规格的钻具需要更换颚板,给操作者带来诸多不便等问题,研制了一种新型钻杆动力钳。该动力钳主要由动力钳、吊装架、移动装置3部分组成,另配有液压动力站。它采用扭矩钳+旋扣钳组合的结构形式,扭矩钳采用油缸增力卡紧,油缸力臂小转角大扭矩缓慢松扣或紧扣。试验结果表明,新型动力钳的方案可行,结构合理,工作可靠,主要技术指标达到了设计要求。

Development of novel drill stem power tong

When the torque of the drill stem power tong with big hatch gear structure is big,the gear hatch is easy to be deformed,thus causing slippage and damaging the drill tool and shortening the operating life;and the drill tools with different sizes need to replace jaw plate,bringing much inconvenience to the operators.Thus,a novel drill stem power tong is developed.The power tong mainly consists of three big parts such as power tong,hanging support and moving equipment,and the hydraulic power station is also provided.It uses torque tong and jerk tong,and the torque tong uses oil-cylinder power grip.The oil cylinder has small arm and big rotary angle and the torque slowly loosens the thread or tightens the thread.The test result shows that the novel power tong is feasible with reasonable structure and reliable operating.Its main parameters reach the design demand.