TOOL FOR LIFTING AND LIFTING UNDERWATER EQUIPMENT Russian patent published in 2021 - IPC B66C1/42 B66C1/66 E21B23/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry, in particular to equipment designed for lowering and lifting an underwater control module and its installation on a subsea Christmas tree. The tool for lowering and lifting underwater equipment contains a hollow body, which is a cylindrical element, the upper part of which is made with a diameter that exceeds the diameter of the middle part of the body. In the upper part of the body, there are soft-landing hydraulic cylinders. The gripping mechanism is hollow elements articulated with each other, in the cavities of which a gripping and locking mechanism is installed with rods with profiled ends, made with the possibility of interacting with mating places on the installed underwater equipment. The gripping and blocking mechanism is made in the form of toothed racks, made with the possibility of tangential movement, located around the central gear and interacting with their teeth with the gear teeth. One end of each rack is profiled to interact with a mating location on the subsea equipment to be installed. The central gear is made with the possibility of radial rotation and is located on the same shaft with the driven bevel gear interacting with the driving bevel gear located on the shaft in the body wall and having a drive outside the body.

EFFECT: invention provides the possibility of translational movement and fixation relative to the teeth of the driven bevel gear and interaction with them to block the said gear from turning.

1 cl, 7 dwg