Improvements in the mechanical shaker for fruit harvesting.

摘要

The present invention relates to an agricultural mechanical shaker for fruit harvesting using phase-controlled linear impact vibrations, transmitted to the tree's major trunk and/or limbs, comprising tree sets of constructive elements, namely the shaker set (Figure A) (1), the spring set (Figure A) (2) with the guiding system (figure A) (3), and the clamp/trunk or limb set (4 and Figure E). The phase-controlled impact vibration is achieved by means of an adjustable springs set (Figure C) (8) that connects the shaker set (Figure A) (1) to the clamp/trunk or limb set (Figure C) (9) through the guiding system (Figure C) (10). The clamp grasps the trunk or limb (Figure E) (15), in such a way that each impact given by the shaker set in the clamp/trunk or limb set causes a displacement of the last set relatively to the shaker set, producing a recovering tension of the springs in the guiding system. Consequently, the vibration of the shaker set will have a phase angle regarding to the vibration of the clamp/trunk or limb set, between 0 DEG and 360 DEG . The impact is obtained by the linear movement of the shaker set relatively to the clamp/trunk or limb set. The clamp has the form of a fork (Figure E) and includes a set of vulcanized assymmetric grips (Figure C and E) (15), a vulcanized chains set (Figure E) (16) and an hydraulic or pneumatic system (Figure E) (17), for the attachement of the clamp to the tree.