Straddle tractor

Straddle tractors are agricultural tractors classified in category T4 (specialised tractor). This category includes sub-category T4.1, which is a straddle tractor with a raised chassis for straddling crop rows. Ground clearance must be greater than 1000 mm. When the ratio between the height of the centre of gravity and the average minimum track of all the axles is less than 0.90, the speed must be limited to 30 km/h.
The qualities required of this type of agricultural tractor depend on the work to be carried out.

Requirements for agricultural tractors

For traction work

A heavy tractor with a long wheelbase and front and rear wheels whose dimensions are capable of creating "development", i.e. pulling capacity, is preferable.

For transport and handling work

The qualities required are different from those needed for pulling work. You'll be looking for a lighter tractor with good visibility.

Straddle tractor

Tool carrier

The straddle tractor tractor is fitted with different tool carriers depending on its configuration (tillage, forwarder, etc.). There are generally tool carriers between the wheels as well as tool carriers positioned behind the rear wheels (track eradicator).

There are two main types of between-wheel tool carrier available on the market:

Push-fit, consisting of a pole to which the tools are attached by means of a cross clamp. Depending on the working width, the pole can be fitted with a sliding frame to adapt the working width to the rows of vines. A guide is positioned on the front of the pole, keeping the entire tool holder in line with the row and limiting lateral mechanical stress.
When pulled, it consists of a deformable parallelogram with a square at the bottom. The advantage of this type of tool-holder is that it facilitates the work of mechanical weeding tools. On the other hand, it reduces the space available between the front and rear wheels.

Manufacturers of straddle tractors are developing rapid hitching systems to limit mechanical stress and, consequently, the arduous task of hitching tools. This is the case of GRV, which offers a tool carrier mounted on pivot points.

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