GEAR, GEARED TURBO-MACHINE AND METHOD OF INSTALLATION OF A GEARED TURBOMACHINE Russian patent published in 2018 - IPC F04D25/16 F01D15/12 

FIELD: machine building.

SUBSTANCE: gear for a geared turbomachine includes a body, large wheel and two gears meshed with the large wheel, which in each case are connected or made in one piece with the shaft connected to an input and/or output unit. Gear units, respectively, of the shafts connected to them are installed in the body. Body has two parts, namely a first, lower in the mounting position, part of the body and a second, located with the offset relative to it in the vertical direction in the mounting position, the upper part of the body. Parts of the body are made with the possibility of connection along the main joint, which passes through the support area of ​​at least one gear unit that is at least in indirect engagement with the large wheel of the gear unit, respectively, of a shaft connected to it. Second part of the body is formed from three body elements, namely one middle body element, which contains at least one part of the big wheel, and two side case elements connected to the middle body elements. Middle body element is connected to a side body element in each case along the joint, which is oriented at an angle to the main joint. Another invention of the group relates to a geared turbo-machine, which, using the above-mentioned gear, integrates input and/or output units into a machine line by connecting shafts connected to driving and driven gears. When mounting a geared turbo-machine, the lower one is mounted and/or positioned in the mounting position, made in one piece, the first part of the body. Large wheel and a gear unit meshed with it are mounted in/on the first part of the body, preferably in its main joint. Then the middle body element is assembled with partial encirclement of the large wheel and connection with the first part of the body along the main joint. Gear units gearing with a large wheel and installed in the main joint are mounted. Then the side body elements are mounted with a connection with the middle body element and with the first part of the body, forming a second part of the body connected to the first part of the body.

EFFECT: group of inventions allows to simplify access to gear units of a gear and prevent bending and opening of the lower part of the body under the weight of a large wheel and other wheels installed in a joint due to the possibility of dismantling only the side components of the upper part of the body.

22 cl, 13 dwg