Mechanical interconnection of multiple rotatable devices (mimrd)

A mechanical interconnection of multiple rotatable devices, comprising:

• a gear train for transmitting or interchanging speed and/or torque between the rotatable devices,
• at least three rotatable devices interconnected or interacting with the gear train for delivering rotational power to and/or receiving rotational power from the gear train;
• wherein the gear train of the mechanical interconnection of multiple rotatable devices comprises:
• one or more first stages;
• and
• one or more second stages,
• wherein each first stage is coupled to one of the one or more second stages and is a speed reducer or a speed increaser serving as a pre-gearing for connecting a rotatable device to the concerned second stage, at least two rotatable devices, i.e. a first rotatable device and a second rotatable device of the at least three rotatable devices, both being connected to a second stage and at least one of the first and the second rotatable device connected to the concerned second stage by the first stage;
• wherein each second stage is a differential gearing comprising a planetary gear train system which is executed in a quasi duplicated form composed of an input side and an output side, comprising respectively a first set and a second set of planetary gearing, which are mutually quasi identical but slightly different from one another,
• wherein the first set and the second set of planetary gearing together comprises at least three duo's of two elements of the same type, i.e. a geared element or a planet carrier, whereby one element of each duo is part of the first set while the other element of this duo is part of the second set,
• wherein each duo is of a different type of element,
• wherein the at least three duo's comprise at least a duo of planet carriers and a duo of planet gears,
• wherein the first set and the second set of planetary gearing interact respectively with first and second interacting gearing of respectively the input side and the output side and which sets are supported in a rotatable manner either each on their own separated planet carrier or together on a common planet carrier, each set of planetary gearing being composed of a number of planetary gearing elements which are disposed circumferentially and spaced from one another on their supporting planet carrier, at least a first duo of the aforementioned at least three duo's being linked to form a linking mechanism between the first set and the second set of planetary gearing for transmission of torque and/or speed between the input side and the output side;
• wherein at least a first element, i.e. a geared element or a planet carrier, of a second duo of the aforementioned at least three duo's of at least one of the second stages is forming a torque resisting or torque controlling means in that it is permanently blocked or impeded in a controllable way or provides a controllable torque to the gear train of the mechanical interconnection of multiple rotatable devices;
• and,
• wherein the third rotatable device of the at least three rotatable devices is interconnected or interacting with at least one second element, i.e. a gearwheel or a planet carrier, of the aforementioned second duo of at least one of the second stages, whereby wherein a differential gain-K, or K, of the operating pitch diameters of the elements of the afore-mentioned at least three duo's fulfils:
• K∈[0,7−1[∪]1−1,4];
• wherein the differential gain-K is defined as:
• K=(D2,a/D1,a)*(D1,b/D2,b) for ring or sun differential gearings,
• wherein:
• D2,a is the operating pitch diameter of the element of the aforementioned second duo belonging to the first set of planetary gearing;
• D1,a is the operating pitch diameter of the element of the aforementioned first duo belonging to the first set of planetary gearing;
• D2,b is the operating pitch diameter of the element of the aforementioned second duo belonging to the second set of planetary gearing;
• D1,b is the operating pitch diameter of the element of the aforementioned first duo belonging to the second set of planetary gearing;
• wherein the differential gain-K is defined as:
• K=(D1,a/(D2,a−D3,b))*((D2,b−D3,b)/D1,b) for carrier differential gearings,
• wherein:
• D2,a is the operating pitch diameter of the element of the aforementioned second duo belonging to the first set of planetary gearing;
• D1,a is the operating pitch diameter of the element of the aforementioned first duo belonging to the first set of planetary gearing;
• D2,b is the operating pitch diameter of the element of the aforementioned second duo belonging to the second set of planetary gearing;
• D1,b is the operating pitch diameter of the element of the aforementioned first duo belonging to the second set of planetary gearing;
• D3,a is the operating pitch diameter of the element of the afore-mentioned third duo belonging to the first set of the planetary gearing when the first duo comprises a set of two rings;
• D3,b is the operating pitch diameter of the element of the afore-mentioned third duo belonging to the second set of the planetary gearing when the first duo comprises a set of two rings;
• D3,a is the negative of the operating pitch diameter of the element of the afore-mentioned third duo belonging to the first set of the planetary gearing when the first duo comprises a set of two sun gears;
• D3,b is the negative of the operating pitch diameter of the element of the afore-mentioned third duo belonging to the second set of the planetary gearing when the first duo comprises a set of two sun gears;
• wherein the differential gain-K is defined as:
• K=(D2,a/(D3,b))*((D3,b)/D2,b) for complex carrier differential gearings,
• wherein:
• D2,a is the operating pitch diameter of the element of the aforementioned second duo belonging to the first set of planetary gearing;
• D2,b is the operating pitch diameter of the element of the aforementioned second duo belonging to the second set of planetary gearing;
• D3,a is the operating pitch diameter of the element of the afore-mentioned third duo belonging to the first set of the planetary gearing, whereby the third duo is a duo of planet gears;
• D3,b is the operating pitch diameter of the element of the afore-mentioned third duo belonging to the second set of the planetary gearing, whereby the third duo is a duo of planet gears.