| 摘要 |
On a locking device for the mouth of the hook of the upper pull rod on a three-point hydraulic system of a tractor, consisting of a bolt which can be moved in a bore of the hook in front of the mouth of the hook under the force of a spring and which bears a handle on its side facing away from the mouth of the hook, the object is to be achieved of providing a means with which the closure bolt can be held in the open position during the coupling process of an implement. The invention achieves this object in that the handle is mounted at one end of the bolt and can be pivoted into two positions, an open position in which the other end of the lever is supported on the outside of the hook and draws the end of the bolt facing the mouth of the hook into the bore and a second closure position in which the lever is located essentially parallel to the outer face of the hook and the end of the closure bolt is located in front of the mouth of the hook.
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