| 摘要 |
A plate open-hinge chain consists of internal plates located in parallel in pairs that have two symmetrically arranged relative to the middle plates of shaped holes made in the form of connected parts of concentric holes of larger and smaller diameters, and sector parts of shaped holes of larger diameter holes are located outside relative to the middle of plate with a wrapping anglerad., where Z is the allowable minimum number of sprocket teeth, and in the parts of shaped holes sector sleeves are pressed, whose inner diameter is equal to the smaller diameter of the shaped hole of the internal plate, and in the cylindrical holes formed by inner surfaces of sector sleeves and internal surfaces of shaped holes of smaller diameter rollers are mounted, which by their ends are pressed in the holes of outer plates and the center-to-center distance of the shaped holes of inner plates is less than the center-to-center distance of the holes of outer plates by an amount equal to two thicknesses of the sector wall thickness and one value of the gap at the hinge. The value of the wrapping angles by inner cylindrical surface of the sector sleeve of the cylindrical surface of the roller and inner cylindrical surface of the shaped hole of larger diameter of inner plate of outer cylindrical surface of the sector sleeve is different and less thanrad. Nominal value of the center-to-center distance of shaped holesof the inner plate is equal to. The nominal value of center-to-center distance of shaped holes of outer plates is equal toand wrapping angle by inner cylindrical surface of the sector sleeve of the cylindrical rolleris equal torad. The wrapping angle by the inner cylindrical surface of the shaped hole of larger diameter of the inner plate of the outer cylindrical surface of the sector sleeve is equal torad. and the vertex of this angleis shifted along the longitudinal axis of the inner plate from the center of shaped hole of this plate to its edge by an amount. |
