Since June 15th 2016 Meiren Engineering owns the patent no EE 05771 B1 for support frame of a plough.

The main element is a bearing beam, which can be lifted up-down by a lift cylinder and turned to left-right by beam move cylinder. The frame of the construction acts as a double parallelogram. Namely the parallelogram acting in vertical plane is formed by the bearing beam and the connecting element in cooperation with the plough and fixing mount on the vehicle, the paralellogramm acting in horisontal plane is formed by bearing beam and turn cylinder in cooperation with the plough and fixing mount on the vehicle. Support frame according to the invention differs in that due to the use of connecting element the support frame maintains the feature of traditional “parallelogram” of the snow ploughs, which ensure that the raised plough in transport position remains parallel to the ground.

Watch how the support frame (the parallelogram) of a plough works: