Acceleration and deceleration handrail driving device

摘要

Disk-shaped pulleys 6 arranged on entrance side IN and exit side OUT and rotated around a horizontal axis, an expansion link chain 8 endlessly wound between the disk-shaped pulleys, and a flexible handrail belt member 10 connected outside the expansion link chain and extendable/retractable in a traveling direction are provided. The expansion link chain comprises expansion links 82 connected in series. The expansion link is flexibly extendable/retractable in length direction and has a pivot 84. An acceleration/deceleration device 12 accelerates/decelerates the pivot, and has a first track chain 122 endlessly guided along a predetermined first track and a first pressing fitting 128 having a rod shape extending outwards swingably attached to the first track chain. A tip of the first pressing fitting is detachably engaged with the pivot to accelerate/decelerate the pivot by continuously changing distance between the pivots by change of swing angle of the first pressing fitting.

主权项

1. An acceleration and deceleration handrail driving device in which a looped handrail is endlessly wound between an entrance side and an exit side so that the handrail is driven in a predetermined direction comprising:
pulleys arranged on each of the entrance side and the exit side; a looped expansion link chain that is wound between the pulleys of the entrance side and the exit side and formed by connecting a plurality of expansion links, which are flexibly extendable and retractable within a predetermined range in a length direction; and a handrail belt member that is connected with the expansion link chain and continuously extendable and retractable in the length direction of the expansion link chain; wherein the expansion links of the expansion link chain have a first concavo-convex engagement member which is engageable and releasable with a second concavo-convex engagement member by approaching and separating to/from the second concavo-convex engagement member in a direction substantially perpendicular to the length direction, an acceleration and deceleration device is provided so as to accelerate and decelerate the expansion link chain along the length direction of the expansion link chain via the second concavo-convex engagement member, the acceleration and deceleration device has:
a first track chain that is driven at a constant speed along a first track, which follows substantially same trajectory as the expansion link chain in a predetermined section of the expansion link chain while being spaced a constant distance from the expansion link chain; anda first pressing fitting that has the second concavo-convex engagement member at one end and is swingably attached to the first track chain at other end, and the first pressing fitting is swung in a predetermined direction within a predetermined angle range when the other end of the first pressing fitting is driven by the first track chain at the constant speed, and the second concavo-convex engagement member drives the expansion link chain via the first concavo-convex engagement member at a moving speed of the second concavo-convex engagement member from when the second concavo-convex engagement member is engaged with the first concavo-convex engagement member by following an arc trajectory to approach to the expansion link chain until the second concavo-convex engagement member is released from the expansion link chain by further following the arc trajectory to separate from the expansion link chain.