| 摘要 |
<p>#CMT# #/CMT# The door/trap has a single-piece frame (1) including U-shaped shaped left and right slides (13, 14), where the slides are connected and assembled in parallel by an upper cross-piece (15), a lower cross-piece (17), and two front cross-pieces (18, 19). A plate (2) sliding vertically in the two slides is linked via a chain (8) at an end of a rod (7) of an electric jack (3), where the plate is made of sheet metal, plastic or wood composite. The length of the rod of the jack is equal to the height of the door of between 200 and 350 mm. #CMT#USE : #/CMT# Automatic door/trap for a hen house for protecting the hen from a nocturnal predator. Uses include but are not limited to a fox, a weasel, a polecat, a marten or a domestic cat. #CMT#ADVANTAGE : #/CMT# The door can be automatically operated without human intervention and with full safety for hens while eliminating the risk of crushing, pinching, shearing, and wedging during the closing movement of the door. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an automatic door/trap in a closed position. 1 : Single-piece frame 2 : Plate 3 : Electric jack 7 : Rod 8 : Chain 13 : Left slide 14 : Right slide 15 : Upper cross-piece 17 : Lower cross-piece 18, 19 : Front cross-pieces.</p> |
