Blade levelling apparatus and mounting system

A blade leveling assembly for mounting to a vehicle, the blade leveling assembly comprising:

• a body mounting portion;
• and
• a blade body portion configured to be rotated such that a general plane of the blade body portion is rotatable from a level position relative to the body mounting portion,
• wherein the body mounting portion is interconnected by at least four fixed length connecting linkages, each of the fixed length connecting linkages being connected to the body mounting portion at one end thereof by a first pivotable connection and connected to the blade body portion at another end thereof by a second pivotable connection, at least two of the at least four fixed length connecting linkages comprising a first set of interconnecting linkages connected such that the respective pivotable connection at each of the first set of interconnecting linkages is an equivalent distance from the middle of the blade leveling assembly when viewed in plan and the blade body portion is in the level position, at least two of the at least four fixed length connecting linkages comprising stabilizing linkages extending between the body mounting portion and blade body portion, when viewed in plan, at an angle relative to the at least two fixed length linkages of the first set of interconnecting linkages, the stabilizing linkages being connected to the body mounting portion at one end thereof by a third pivotable connection and connected to the blade body portion at another end thereof by a fourth pivotable connection,
• the body mounting portion and the blade body portion being additionally connected by a pair of adjustable length connecting linkages comprising linear actuators positioned on either side of the middle of the blade leveling assembly when viewed in plan, each end of each of the linear actuators being connected to the body mounting portion and blade body portion respectively by a fifth pivotable connection, each of the fifth pivotable connections of the linear actuators being an equivalent distance from the middle of the blade leveling assembly when viewed in plan when the blade body portion is in the level position, a pivotable connection point of each of the ends of each of the linear actuators being vertically separated in elevation when the blade leveling assembly is viewed from the side,
• interaction of the fixed length connecting linkages and the adjustable length connecting linkages allows relative movement of the blade body portion relative to the body mounting portion, the relative movement comprising:
• (i) vertical translational movement of the blade body portion relative to the body mounting portion, and
• (ii) rotational movement of said blade body portion, relative to said body mounting portion, about an axis normal to the general plane of the blade body portion, and
• wherein the first set of interconnecting linkages in combination with the angled stabilizing linkages resist lateral translational movement of said blade body portion relative to said body mounting portion.