| 摘要 |
A soil-cultivation implement contains a frame, a post with a cross-beam, fixed thereon by means of a hinge, which is spring-loaded by two resilient elements, the possibility of moving of which is limited by two stops and two plungers, mounted on the frame, fixed thereon with the aid of a joint. According to the invention, the cross-beam consists of three parts û the middle rigid one, connected with the post, and two end ones with the possibility of bending relative to the middle one, and on the frame two stops and two resilient elements are additionally mounted. The rigidity of the two end resilient elements is less than the rigidity of the two middle resilient elements.
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