Conveying device and carriage for conveying device
The invention relates to a conveying device comprising at least one movable carriage on which at least one first group and at least one second group of track rollers are disposed, and a track rail disposed so as to be locationally fixed for guiding the carriage. The track rail has at least one track face, at least one straight portion and at least one curved portion. The track rollers are configured in such a manner that during movement of the carriage along the straight portion, exclusively the track rollers of the first group roll on the track face assigned to the straight portion, and during movement of the carriage along the curved portion, exclusively the track rollers of the second group roll on the track face assigned to the curved portion. The invention furthermore relates to a further conveying device and corresponding carriages, as described herein.
1. A conveying device, comprising:
at least one movable carriage, on which at least one first group and at least one second group of track rollers are disposed; and
a track rail disposed so as to be locationally fixed, for guiding the carriage;
wherein the track rail has at least one track face;
wherein the track rail has at least one straight portion and at least one curved portion; and
wherein the track rollers of the first group and of the second group are configured such that during movement of the carriage along the straight portion of the track rail, exclusively track rollers of the first group roll on a track face assigned to the straight portion; and
during movement of the carriage along the curved portion of the track rail, exclusively track rollers of the second group roll on a track face assigned to the curved portion.
2. The conveying device as claimed in claim 1 , wherein at least one track roller of the first or second group has a truncated-cone shape.
3. The conveying device as claimed in claim 1 or 2 , wherein during the movement along the curved portion of the track rail, respective centers of rotation of the track rollers of the second group are oriented in a direction of a center of a curve of the curved portion.
4. The conveying device as claimed in claim 1 , wherein
the carriage and the track rail are symmetrical in relation to a longitudinal center plane, and
the carriage has two carriage halves which are mirrored on the longitudinal center plane and of which each has one of said first group and one of said second group of track rollers;
wherein on a first lateral flank and on a second lateral flank of the track rail one first and one second track face for the track rollers are formed;
wherein respective track rollers of the first and second group are assigned to the first or second track face, such that during movement of the carriage along the straight portion of the track rail, exclusively track rollers of the first group bear on track faces assigned thereto and roll thereon; and
during movement of the carriage along the curved portion of the track rail, exclusively track rollers of the second group bear on track faces assigned thereto and roll thereon.
5. The conveying device as claimed in claim 4 , wherein
the first and the second groups each have three track rollers;
wherein two of the track rollers of the first group are assigned to the second track face, and a third track roller of the first group is assigned to the first track face; and
wherein two of the track rollers of the second group are assigned to the first track face, and a third track roller of the second group is assigned to the second track face.
6. A conveying device, comprising:
at least one movable carriage, on which a plurality of track rollers are disposed; and
a track rail disposed so as to be locationally fixed, for guiding the carriage;
wherein the track rail has at least one track face;
wherein the track rail has at least one straight portion and at least one curved portion; and
wherein at least one of the track rollers comprises a spherical bearing, such that a center of rotation of the at least one track roller automatically adapts to a track face assigned to the curved portion of the track rail.
7. The conveying device as claimed in claim 6 , wherein a delimiting installation for delimiting a deflection angle of the bearing is provided.
8. The conveying device as claimed in claim 7 , wherein the delimiting installation comprises a thrust washer disposed transverse to a center of rotation of the track roller having the spherical bearing.
9. The conveying device as claimed in claim 7 , wherein the delimiting installation comprises a bearing-side delimiting means.
10. The conveying device as claimed in claim 6 , wherein, in relation to a longitudinal axis of the carriage, exclusively outboard track rollers comprise in each case one spherical bearing.
11. A carriage for a conveying device having a track rail disposed so as to be locationally fixed, for guiding the carriage, the carriage comprising:
one first and one second group of track rollers, for rolling on at least one track face of the track rail, wherein the track rail has at least one straight portion and at least one curved portion;
wherein the track rollers of the first group and of the second group are configured such that during movement of the carriage along the straight portion of the track rail, exclusively track rollers of the first group roll on a track face assigned to the straight portion; and
during movement of the carriage along the curved portion of the track rail, exclusively track rollers of the second group roll on a track face assigned to the curved portion.
12. A carriage for a conveying device as claimed in claim 11 , comprising:
a plurality of the track rollers;
wherein at least one of the track rollers comprises a spherical bearing, such that a center of rotation of the at least one track roller automatically adapts to the track face assigned to the curved portion of the track rail.