Parallel shaft strap tie down apparatus and system
A parallel shaft strap tie down apparatus and system. Exemplary embodiments include a parallel shaft strap tie down apparatus and system for vehicle transports. Exemplary embodiments include a central shaft having a ratchet wheel and a pawl configured to wrap a strap around the central shaft. A parallel shaft is positioned parallel to the central shaft. The strap can be inserted between a variable gap between the central shaft and the parallel shaft. When the central shaft is rotated the strap is wound around the central shaft and the parallel shaft, both of which cooperate to create a self-tightening response of the strap on the central and parallel shafts.
1. A strap tie-down apparatus, comprising:
a first shaft disposed and configured to rotate between support plates;
a second shaft parallel and coupled to the first shaft, wherein the second shaft is radially moveable with respect to the first shaft;
a ratchet wheel coupled to an end of and stationary with respect to the first shaft; and
shaft plates coupled to the first shaft, wherein the second shaft is disposed between the shaft plates, and the shaft plates are fixed with respect to the first shaft.
2. The apparatus as claimed in claim 1 wherein radial movement between the first shaft and the second shaft forms a gap between the first and second shafts.
3. The apparatus as claimed in claim 2 wherein the gap is configured to receive a strap.
4. The apparatus as claimed in claim 1 wherein the second shaft comprises:
a central portion; and
a first end and a second end of the central portion,
wherein the first end and second end have a radius that is less than a radius of the central portion.
5. The apparatus as claimed in claim 4 wherein the central portion and the first and second ends are non-concentrically arranged.
6. The apparatus as claimed in claim 4 wherein the first and second ends are disposed in slots disposed on the shaft plates.
7. The apparatus as claimed in claim 6 wherein the slots have a radius greater than the radius of the ends and less than the radius of the central portion.
8. The apparatus as claimed in claim 4 wherein the central portion and the first and second ends of the central portion are concentrically arranged.
9. A strap tie down apparatus, comprising:
a first shaft disposed and configured to rotate between support plates;
shaft plates connected perpendicular to and fixed with respect to the first shaft;
a second shaft disposed between the shaft plates and parallel to the first shaft, the second shaft configured to rotate within the shaft plates and further configured to move radially into contact with the first shaft; and
a ratchet wheel coupled to an end of and stationary with respect to the first shaft.