COILED TUBING CLAMPING MECHANISM AND INJECTOR HEAD USING CLAMPING MECHANISM

摘要

A coiled tubing clamping mechanism comprises a saddle-shaped clamping block (1) and a clamping block seat (4). The saddle-shaped clamping block (1) is connected to the clamping block seat (4). Two sides of the saddle-shaped clamping block (1) are provided with a tongue platform (102). The tongue platform (102) is provided with an open hole (103). The back of the saddle-shaped clamping block (1) is provided with a groove (104). Two sides of the clamping block seat (4) are provided with a pair of bosses (406) respectively. The groove (104) of the saddle-shaped clamping block (1) is inserted in a holding slot (405) formed by the bosses (406) of the clamping block seat. A traverse gap is kept between the groove (104) and the holding slot (405). The clamping block seat (4) is provided with a positioning screw (2) for limiting the position of the saddle-shaped clamping block (1). Also disclosed is an injector head using the coiled tubing clamping mechanism, comprising a tubing clamping mechanism (11) and a drive chain (13). The tubing clamping mechanism (11) is mounted on the drive chain (13) through two pin holes (401) in the clamping block seat (4). The present invention can effectively prevent the tubing from being worn, is reliable in use, and makes it convenient to replace the clamping block.