铲抛机是用于修筑梯田和开挖沟渠的一种农田基本建设机具。它主要由切土部件和抛土部件组成,切土部件将土切下后送到抛土部件,然后由抛土部件将土横向抛出。这种作业方法可适应修筑梯田的工艺要求,拖拉机往返行驶均可作业,有较高的生产效率。这种机具也适于挖大的沟渠,拖拉机可走在沟中作业,将土抛到沟的两侧。由于铲抛机是用拖拉机的动力输出轴驱动完成抛土作业,因此可减少牵引阻力。铲抛机是一种新机型,现尚处研制阶段。下面介绍由山西 Shoveling machine is used to build terraces and trench excavation of a farmland infrastructure. It is mainly composed of shearing parts and thrown parts. The shearing parts will be cut off and sent to the thrower parts. Then the thrown parts will be thrown laterally. This method of operation can be adapted to the requirements of the construction of terraced fields, tractor can travel from home to work, have a higher production efficiency. This machine is also suitable for digging large ditches, tractors can walk in the ditch operations, throwing the soil on both sides of the ditch. As the shovel machine is driven by the power output shaft of the tractor to finish the soil throwing operation, the traction resistance can be reduced. Shovel polishing machine is a new model, is still in the research and development stage. The following is introduced by Shanxi