| 摘要 |
A milking unit detacher mechanism including a main support column and a horizontally extending retractable milking unit support assembly mounted on the main column. The retractable support assembly is comprised of a plurality of link members pivotally connected to each other with the end link member pivotally connected to the main support column by a pivot pin to facilitate movement of the support assembly in its retract direction from underneath the cow and in its extended direction to the milking position underneath the cow. A biasing means is provided to create a biasing force on the end link member tending to rotate it towards its extended position. The biasing means includes a first cam sleeve rotatably mounted on the pivot pin and fastened to the main support column and a second cam sleeve fixedly mounted on the pivot pin adjacent the first cam sleeve. The first and second cam sleeves have cooperating cam surfaces on the adjacent ends thereof which operate when the sleeves are rotated with respect to each other to create the desired biasing force.
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