| 摘要 |
A brake member for a slide gate mechanism which includes a slanted drive mechanism engaging face adapted to engage at least one drive wheel of the drive mechanism for the slide gate so as to gradually brake the gate. The preferably a pair of opposed drive wheels are adapted to frictionally engage a drive rail on a gate so as to provide a slide gate mechanism. The pair of opposed wheels are spring biased toward the railing to ensure adequate frictional engagement with the rail. Limit switches are disposed to deactivate operation of the drive mechanism and a pair of brake members are disposed so as to positive a slanted drive mechanism engaging face toward the drive wheels of the drive mechanism such that when utilized the brake member operates to gradually brake the gate as the slanted drive mechanism engaging face engages at least one of the drive wheels. Further, the present invention includes a method for controlling the movement of the gate member by providing a switch engaging member on the gate which is adapted to deactivate the operation of the drive mechanism for the gate and further positioning the brake member at a point on the gate after the point at which the gate will normally stop movement. In this manner the brake member operates in emergency situations where the gate does not stop prior to the brake member. |
