| 摘要 |
Built-in safety shock-absorbing device which can be fitted to all types of teeth (rigid, semi-rigid, flexible, vibrating flexible). The invention relates to a device making it possible to work in grounds containing rocks or stones, without the risk of breaking or deforming the teeth. It consists of a fixture (4) in which there is housed a spring (1), the tension of the spring is exerted on the support plate (10) via the towing rod (6), which tension secures the fixture (4) to the plate (10) via ball joints (2) and their seats (3). The pivoting and articulating movement of the fixture take place by means of the ball joints (2), associated with their seats (3). The ball joint (5) allows the towing rod (6) to follow the various movements of the fixture (4), the tension in the spring is adjustable by means of the screw (7), and the loads necessary for vertical retraction are greater than those for lateral retraction. The device according to the invention is particularly intended for tools for working the ground, such as: loosening, subsoiling, ploughing in stubble. <IMAGE>
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