A machine for making a trench in a drainage.

摘要

The trench-digging machine has a digging tool (20) and a hopper (24) which feeds the granulated drainage material into the trench. They are mounted on a chassis (10) and supported by two sets of wheels on either side of the hopper. A box (18) takes the excavated rubble. At the base of the box are two sole plates (56, 58) which can be adjusted vertically to apply pressure to the surface on either side of the trench. An excavating wheel (22) has its axis is fixed to the chassis. The height of the wheels can be adjusted to ensure that the chassis is horizontal and that the load remains constant over the wheels. The wheel height also determines the depth of the trench. The machine is pulled by a small tractor. USE/ADVANTAGE - For draining grass areas such as sports fields. Cuts and fills trench in one operation with minimal surface damage.