ZQ203/100 型钻杆动力钳

本钳具有以下特点 This tong has following features： 

1、只有液压马达用液压动力，其余用压缩空气，简化了液压系统；

This tong simplifies hydraulic system because only hydraulic motor uses hydraulic power, other parts usecompressedair. 

2、上下钳合体、避免了钻杆在大扭矩时弯曲的可能性，并防止它在卡瓦中打滑；

Upper tong integrates with lower tong to avoid twisting drill pipe in big torque operation and to prevent it slipping in neck. 

3、可不停车换档，大大方便工人操作；

Workers operate it very convenient for shifting gear without power off. 

4、自动对中夹紧机构可保证新旧接头卡紧可靠；

Automatic centralizing clamping mechanism can clamp new and old tool joint reliably. 

5、移送用气缸，不需要人推拉钳子；

Air cylinder can push or pull this tong, saving labor’s force. 

6、复位对缺口非常方便，由上扣变换为卸扣迅速可靠；

Resetting and aligning the opening is convenient. Changing makeup to breakout is quick and reliable. 

7、扭矩和速度能控制，正反方向都可产生最大扭矩和转速；

Torque and speed can be controlled. It can get the biggest torque and the highest speed inclockwiseorcounter-clockwise. 

8、上下钳夹紧分别用刹带和夹紧缸、结构简单，在扭矩大时(70-100kN.m)用门框限制钳头变形。

The clamping structure is simple. The clamping of upper tong and lower tong is accomplished by brakingbandandclamping cylinder respectively. Safety door can avoid tong head deforming in big torque operation (70-100 kN.m.).