| 摘要 |
Lifting device 1 intended to form, for example, a hitch and suitable for being mounted on a frame and especially on the frame of an agricultural machine, comprising a support 3 mounted so as to rotate on the said frame 2 about a horizontal pin 7, means 11 for rotating this support 3 about this horizontal pin, as well as two arm-carrying systems 5 each comprising a first arm 17 mounted so as to rotate on the said support 3 about a pin 21 perpendicular to the rotation pin 7 of the said support 3 on the said frame 2, a second arm 25 extending the first arm 17 and mounted so as to rotate on the latter about a pin 27 perpendicular to the rotation axis 21 of the first arm 17 on the support 3, as well as means 31 for limiting the angular movements of the second arm 25 with respect to the first arm 17 and/or for adjusting the angular position of the second arm 25 with respect to the first arm 17. <IMAGE>
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