Iron driller turnbuckle mechanism

Abstract

Disclosed is a spinner mechanism of an iron roughneck. The mechanism is provided with two groups of quadratic crank mechanism in parallel to ensure the motion posture of the spinner mechanism. Two guide draw-bar assemblies (17) of the mechanism, which are connected with each other in a hinged manner, are mounted on a fixing crossbeam base (6) by means of a guide sliding slot and the two guide draw-bar assemblies (17) synchronously move forward and backward along the guide sliding slot, so as to realize spinner supporting bases (2) on two sides driving a spinner roller (22) to synchronously clamp a drill rod. The spinner mechanism has high motion synchronization and a reliable clamping force. The mechanism adjusts an initial position of spinner tongs by means of an adjustment screw rod (18). During a working procedure, the mechanism depends on the spinner supporting bases (2) to release the freedom to oscillate and can automatically adjust the its own posture to clamp drill rods of different diameters, and can fit with the offset in the longitudinal position generated by the drill rod in a symmetrical plane, and when there is only one guide draw-bar assembly remaining, the spinner mechanism can automatically fit with the offset in the transverse direction of the drill rod. An oil cylinder (8) of the mechanism that can float up and down is mounted between a spinner vertical post (11) and a recessed holder (10) and can adjust the distance floated up and down.

Description

technical field [0001] The invention relates to a wellhead automation equipment in the petroleum drilling industry, in particular to an iron driller's turnbuckle mechanism. Background technique [0002] The iron driller's turnbuckle mechanism is a kind of wellhead automation equipment, which can quickly connect the two drilling tools after the preparation work of the two drilling tools to be connected is completed; Turnbuckle work. At present, many turnbuckle equipment, such as hydraulic tongs, etc., require manual operation, and the structure is complex, and the effect is poor; "CN 103132930B" can solve the above problems, but the iron driller's turnbuckle device uses a triangular wedge mechanism to realize the clamping of three turnbuckle rollers, the movement of the three rollers is related, and the adjustment of the center position is complicated; the front and rear floating devices The overall floating method of the turnbuckle pliers, the floating part has a large vol...

AI Technical Summary

Problems solved by technology

At present, many turnbuckle equipment, such as hydraulic tongs, etc., require manual operation, and the structure is complex, and the effect is poor; "CN 103132930B" can solve the above problems, but the iron driller's turnbuckle device uses a triangular wedge mechanism to realize the clamping of three turnbuckle rollers, the movement of the three rollers is related, and the adjustment of the center position is complicated; the front and rear floating devices The overall floating method of the turnbuckle pliers, the floating part has a large volume and weight, and the flexibility is insufficient. At the same time, the existing turnbuckle equipment has poor adaptability to the deviation of the drilling tool position and drill pipes of different specifications, and it is inconvenient to adjust. These factors directly affect work efficiency

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