A transmission system for transmitting torque to a work tool configured to move inside a pipeline; an installation comprising such a system

Abstract

The invention relates to a torque transmission assembly (10) for a work tool configured to move inside a pipe, the assembly (10) extending along a longitudinal principal axis (A) and comprising at least one body (102) having a torque transmission mechanism from a first end (104) of the assembly (10) to a second end (106) of the assembly (10). The first end (104) is connected to said at least one body (102) by a first pivot joint extending substantially perpendicularly to the principal axis (A) along a first pivot axis (P1), the first end (104) comprising: a transmission member (1041) driveable in rotation by the torque received from a transmitting device, and a first drive mechanism connecting the transmission member (1041) to the transmission mechanism of said at least one body (102).According to the invention, the first drive mechanism comprises a first axial bevel gear (1042) driven in rotation about a first axis of rotation substantially parallel to the main axis (A) by the torque transmitted by the transmission member (1041), and a first transverse bevel gear (1043) driven in rotation about the first pivot axis (P1) by the torque transmitted by the first axial bevel gear (1042). The second end (106) comprises a second torque drive mechanism from the transmission mechanism (1020) of said at least one body (102) to the working tool. (See Figure 5 for an abstract illustration.)

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