| 摘要 |
A telescoping entry gate for a milking parlor has a pair of horizontal slide tubes supported on a vertical support embedded in the cow stand. A U-shaped gate member has upper and lower legs slidably journalled in the slide tubes. A pneumatic actuator coupled to the vertical support and to the distal end of the sliding gate member moves the gate between an extended or closed position and a retracted or open position. A barrier in line with the gate defines a cow-passage of about thirty-two inches clearance in the open position and a man-passage of about twelve inches clearance in the closed position.
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