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Connecting sleeve: connecting the stern tail with the drill pipe or the drill pipe and the drill pipe, combined into a drill string for transferring the energy of the rock drill to the drill pipe and transmitting to the drill bit; the connecting sleeve is divided into: (1) half bridge type connection In the middle, the small unthreaded divider bridge is in the middle, the drill rod thread cannot cross the partition bridge area, and the small diameter drill rod end parts are in contact with each other in the partition bridge area. The half bridge type connection sleeve is most suitable for high torque machines. Most R-type and HM-type threaded sleeves are of the half-bridge type; (2) Full-bridge type connecting sleeves: the possibility of the connecting sleeves crawling at the threaded joints is excluded, which is typically applied to surface drilling, good disassembly and separation characteristics and Maintaining a tight fit, not easily stuck, ideal for machines with independent power head rotation; (3) Reducing sleeves: for changing from one thread type or size to another, only in special cases Use; (4) Conversion joint: used to convert from one thread type (male thread or female thread) to another, only in special cases. linkman： Mr. Yang Telephone：0086-594-2956555 Phone number：+8613375052021 QQ: 3473286593 WeChat/Skype/WhatsApp：+8613375052021 |
