| 摘要 |
The invention relates to a load torque blocking device which automatically blocks load-side torques when a drive-side torque is reduced or eliminated. Said blocking device comprises a housing (11), mounted on the frame in a fixed manner, a blocking ring (17) firmly linked therewith and a blocking body (17) which interacts therewith and which rotates on the drive side. The blocking means (19, 20) of said blocking body are adapted to get caught on the blocking ring (17) when a load torque occurs by pivoting the blocking ring (17) by means of the blocking elements (27, 28) of the drive shaft (15). When the blocking body (17) is pivoted back by means of drive elements (23, 24) of the drive shaft (14), the blocking means are detached from the blocking ring (17). The aim of the invention is to avoid undesired friction or incorrect blocking of the blocking means (19, 20) on the blocking ring (18) caused by the centrifugal forces of the blocking body (17). This aim is achieved by configuring the blocking body (17) in such a manner that its center of gravity (M) lies in the area of the rotational axis of the drive shaft and the driven shaft which are aligned with each other. |
