| 摘要 |
The liquid-manure scraper device comprises a rail (6) including two series of notches (9, 10) longitudinally offset with respect to one another, means (7) for moving the rail alternately between an advanced position and a retracted position, scraping elements (3) carried by a shoe (2) mounted on the rail, and a ratchet for securing the shoe to the rail in such a way as to allow it to move step by step between a first and a second end position along the said rail, either in a direction during which the control means move the said rail towards its advanced position, or in the opposite direction during which the said control means move the said rail towards its retracted position. <IMAGE>
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