Vine lifter
Raising the shoots is an operation that takes place at the height of the vine's growth period. It enables the vegetation to be brought together in a vertical plane and avoids obstructing the inter-row passage. Manually, this operation takes between 20 and 30 hours per hectare, depending on the planting density, the number of operations required (1 to 3) and the grape variety (those with a drooping habit are more difficult to raise). The use of special trellising can optimise the work involved. As the lifting period is relatively short, mechanisation of this operation makes sense on large farms (over 30 ha).
Work objective
Vine lifters have two functions:- to straighten the shoots in the trellising plane
- with an inclined auger system (rotation speed - forward speed adjustment required)
- with rotating belts
- with the trellising wires in place as lifting elements
- hold them in place with wires held together with staples (different types of staples exist).
- either with existing trellising wires: the machine lifts and staples them
- or by unwinding the tensioned wire and stapling
The cost of mechanical trellising must be assessed in terms of labour time and consumables (wire + staples).
Components of vine lifting and tying machines
Endless screws
Endless belts 
Belts equipped with flexible fingers
Stapler: view of the system for depositing staples on the wire unwound by the machine