Rail Module Having Rail Portions and Having a Linear Drive, Carriage for a Rail Module and Rail Transport System

A rail-bound carriage (6) for a rail module (1), the rail module comprising rail portions (2) and

• a linear drive for moving the rail-bound carriage (6),
• wherein the linear drive has at least one drive module (3), which can be brought into operative connection with at least one reaction element (7),
• wherein, when the reaction element (7) and the carriage (6) are used as intended, the at least one reaction element (7) is secured independently of the drive module (3) to the carriage in a drive region and the drive region faces the drive module (3) when the carriage is arranged as intended on the rail portions (2),
• wherein the drive module (3) is arranged fixedly in relation to the rail module (1),
• wherein the drive module (3) has at least one first and at least one second drive apparatus (4) for driving the carriage (6) along at least one first and along at least one second movement axis,
• wherein at least one work machine (8) is assigned to each drive apparatus (4) and each movement axis and wherein each drive apparatus (4) has a pinion (5) driven by the work machine (8),
• wherein the pinion (5) and the at least one reaction element (7) are adapted to each other and arranged in relation to each other such that, when the rail module (1) is used as intended, by means of the reaction element (7) a drive action of the pinion (5) of a drive apparatus (4) is converted to a translational movement of the carriage (6) along a movement axis assigned to the drive apparatus (4), so that the rail-bound carriage (6) can be moved along one of the movement axes,
• wherein the pinion (5) has a disc-shaped or cylindrical basic body,
• wherein the pinion (5) can be brought into rotation by the work machine (8),
• wherein the reaction element (7) has at least one rack (13), which can engage with the pinion,
• wherein, beside the rack (13), at least one meshing engagement aid (9) is arranged in the drive region of the carriage (6),
• wherein the meshing engagement aid (9) is formed in a substantially rack-like manner, wherein meshing engagement aid teeth (10) are arranged in alignment with teeth of the rack (13),
• wherein the meshing engagement aid (9) has an insertion side (11) and a feed side (12), the feed side (12) facing a rack portion of the rack (13),
• wherein a feed tooth pitch and/or depth in feed tooth portions of meshing engagement aid teeth (10) are adapted on the feed side (12) to a tooth pitch and/or depth of teeth of the rack (13) in the rack portion,
• wherein an insertion tooth pitch in insertion tooth portions of the meshing engagement aid teeth (10) is greater on the insertion side (11) than the feed tooth pitch and/or an insertion tooth depth in insertion tooth portions of the meshing engagement aid teeth (10) is smaller on the insertion side (11) than the feed tooth depth, and
• wherein the meshing engagement aid teeth (10) each run continuously from the insertion side (11) to the feed side (12), so that when the carriage (6) is moved transversely to the movement axis of a pinion (5) the rack (13) arranged on the carriage (6) can, in a trouble-free manner, be meshed with a pinion of the drive apparatus (4) of the rail module (1) or guided thereover.