an adapted part (140) movably connecting to said shovel and having twin blades (23, 23′) defining a blade interior (135) therebetween,

at least one wear knife (22) fortified, inserted in said blade interior (135),

means for retaining said at least one wear knife to said blades (23, 23′) in a way that said wear knife is in contact with the ground and snow before said blades, said adapted part moves vertically so that it remains parallel to the ground; said adapted part (140) is an upside down Y-shape part (21) having a shank thereof and legs thereof being made of said twin blades with said wear knife inserted therebetween and said shank being enclosed in between a front support (107) and a rear support (109) and comprising attaches (80), to move up and down along inclined part (28) acting as a shock absorber (40) following irregularities of a snow or ice covered road, and said shock absorber (40) is a blade spring (46) placed longitudinally on said inclined part (28), said upside down Y shape part (21) having a shank defining an upwardly positioned U shape part oppositely to an upside down U meant to insert the wear knife, said shank being a second U meant to act as a sheath to receive a shovel plate (104).