Drive transmission device and lifting device equipped with drive transmission device

Abstract

To connect two shafts arranged on the same axis with a gap for inserting a transmission member with a high degree of freedom, in a drive transmission device that uses an endless transmission member such as a belt.SOLUTION: A drive transmission device 2 comprises: a reference shaft 20 arranged on a reference axis As; a first target shaft 21 and a second target shaft 22 arranged on a target axial core At; a first rotor 210 attached to the first target shaft 21; a second rotor 220 attached to the second target shaft 22; a first transmission member 21b wound around the first rotor 210; a second transmission member 22b wound around the second rotor 220; and a shaft joint 23. The first target shaft 21 and the second target shaft 22 are arranged with a gap in an axial direction L, and the first rotor 210 and the second rotor 220 are arranged on the target axial core At so as to be aligned in the axial direction L. The shaft joint 23 is connected to the first rotor 210 and the second rotor 220.SELECTED DRAWING: Figure 2

Claims

1. A reference axis positioned on the reference axis, A first symmetric axis and a second symmetric axis are arranged on a symmetric axis which is a separate axis parallel to the aforementioned reference axis, A first reference rotating body and a second reference rotating body attached to the aforementioned reference shaft, The first rotating body attached to the first axis of symmetry, The second rotating body attached to the second axis of symmetry, The first reference rotating body and the endless first transmission member wrapped around the first rotating body, The second reference rotating body and the endless second transmission member wrapped around the second rotating body, A shaft coupling for connecting the first symmetric axis and the second symmetric axis, Equipped with, With the direction parallel to the aforementioned reference axis and the aforementioned target axis as the axial direction, The first symmetric axis and the second symmetric axis are arranged with a gap between them in the axial direction. The first rotating body and the second rotating body are arranged on the symmetric axis such that they are aligned in the axial direction. The aforementioned shaft coupling is connected to the first rotating body and the second rotating body, With respect to the second rotating body in the axial direction, the side on which the first rotating body is positioned is designated as the first axial side, and the opposite side is designated as the second axial side. A first recess is provided on the axial second side surface of the first rotating body, which is formed to be recessed toward the axial first side. A second recess is provided on the first axial side surface of the second rotating body, which is formed to recess toward the second axial side. A drive transmission device in which the shaft coupling is configured to fit into both the first recess and the second recess.

2. The first rotating body is fixed to the first symmetric axis by the first fixing mechanism, The second rotating body is fixed to the second axis of symmetry by the second fixing mechanism, The first rotating body is movable in the axial direction along the first target axis when it is released from being fixed by the first fixing mechanism. The drive transmission device according to claim 1, wherein the second rotating body is movable in the axial direction along the second target axis when the fixing by the second fixing mechanism is released.

3. A reference axis positioned on the reference axis, A first symmetric axis and a second symmetric axis are arranged on a symmetric axis which is a separate axis parallel to the aforementioned reference axis, A first reference rotating body and a second reference rotating body attached to the aforementioned reference shaft, The first rotating body attached to the first axis of symmetry, The second rotating body attached to the second axis of symmetry, The first reference rotating body and the endless first transmission member wrapped around the first rotating body, The second reference rotating body and the endless second transmission member wrapped around the second rotating body, A shaft coupling for connecting the first symmetric axis and the second symmetric axis, Equipped with, With the direction parallel to the aforementioned reference axis and the aforementioned target axis as the axial direction, The first symmetric axis and the second symmetric axis are arranged with a gap between them in the axial direction. The first rotating body and the second rotating body are arranged on the symmetric axis such that they are aligned in the axial direction. The shaft coupling is a lifting device equipped with a drive transmission device, connected to the first rotating body and the second rotating body. Power source and A lifting mechanism driven by the aforementioned drive source, The object to be lifted is raised and lowered by the aforementioned lifting mechanism, Equipped with, The lifting mechanism comprises a first output rotating body, a second output rotating body, a first winding member wound around the first output rotating body and configured to be retractable and retractable, and a second winding member wound around the second output rotating body and configured to be retractable and retractable. The first winding member and the second winding member are connected to the lifting body at different locations. The first output rotating body is connected to rotate in conjunction with the first target axis, A lifting device wherein the second output rotating body is connected to rotate in conjunction with the second symmetric axis.

4. The first rotating body is fixed to the first symmetric axis by the first fixing mechanism, The second rotating body is fixed to the second axis of symmetry by the second fixing mechanism, The first rotating body is movable in the axial direction along the first target axis when it is released from being fixed by the first fixing mechanism. The lifting device according to claim 3, wherein the second rotating body is movable in the axial direction along the second target axis when the fixing by the second fixing mechanism is released.

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