COLUMN HEAD TURNING DEVICE Russian patent published in 2022 - IPC E21B19/16 

FIELD: column heads turning.

SUBSTANCE: invention relates to a device for turning column heads. The device consists of a base installed on the column head flange and by means of the base pins located in the stud holes of the flange fastened to it, a socket, a cylinder, a gear with a number of radial holes located in its skirt and closed by a plate, a hydraulic line connection unit, a communication unit a gearwheel with a base, two plunger hydraulic cylinders located under the plate and fixed to it on both sides of the gearwheel, the plungers of which in the middle part for interaction with the gearwheel are made in the form of toothed racks. The plunger hydraulic cylinders are additionally rigidly fastened to each other from below by a plate equipped with a central through hole, and the radial holes in the gear wheel skirt are made in the form of rectangular grooves. The assembly for connecting the gearwheel with the base is made in the form of a sleeve screwed into the radial threaded hole of the socket, located near its upper end, which is equipped with a spring-loaded cylindrical ratchet when turning and turning the column heads. A ratchet wheel is additionally mounted on the cylinder with the ability to rotate, equipped with two diametrically spaced elongated fingers screwed from above into the threaded holes of the ratchet wheel and interacting with a rocker ratchet located in the plate hole and fastened to it by welding. The device is equipped with a stepped-sliding coil, equipped with an upper flange, fastened to the socket and equipped with a sleeve, in which two vertical keyways are made, diametrically located on the outer surface of the sleeve and in a perpendicular plane to them two rows of radial holes, diametrically located along the generatrix of the sleeve and the bottom a flange fastened to the base and equipped with a cylindrical body, covering the sleeve of the upper flange, in which in the holes of the four bosses of the body, evenly spaced in its radial holes near the upper end and connected to it by welding, two fingers are screwed into the threaded holes of the bosses for interaction of their working ends with the radial holes of the sleeve, and two fingers are installed in the holes of the bosses and fixed in them, the front ends of which are equipped with rectangular protrusions for interacting with the counter key slots of the sleeve. The device is equipped with split clamps covering the column pipes - upper and lower. Each split clamp has two diametrically located holes - in the upper clamp for interaction with two elongated fingers of the ratchet wheel, and in the lower clamp for interaction with two base fingers. Along the perimeter of the surface of the central passage holes of the clamps, in each one, four replaceable liners-cracks are evenly placed and rigidly fastened to the half-shells. The sleeve of the assembly for connecting the gear wheel with the base is additionally equipped with a cylindrical pawl.

EFFECT: increasing the efficiency of turning and turning the column heads.

1 cl, 7 dwg