The invention discloses a 
reciprocating motion extrusion type strip type 
seedbed construction unit, and belongs to 
agricultural machinery. According to the 
reciprocating motion extrusion type strip type 
seedbed construction unit, hanging arms are symmetrically arranged on a connecting frame at intervals, the hanging arm is provided with a smashing and 
cutting device for strip 
seedbed soil, 
straw and stubble smashing and an operation auxiliary device, the smashing and 
cutting device for the strip seedbed soil, the 
straw and the stubble is composed of an end face 
cam A, a sawtooth disc coulter, a spring seat A, a chain wheel A, a cutter shaft, an ejector rod A, a pressure spring A and a plane 
thrust bearing A, the operation auxiliary device is composed of an end face gear B, a depth-limiting anti-skid 
straw pressing wheel, a spring seat B, a chain wheel B, a wheel shaft, an ejector rod B, a pressure spring B and a plane 
thrust bearing B, a chain is sleeved on the chain wheel A and the chain wheel B; according to a single body of the 
reciprocating motion extrusion type strip type seedbed construction unit, the strip seedbed soil and the stubbles are 
cut up through rotation and axial reciprocating motion of the sawtooth disc coulter, meanwhile, the strip seedbed soil is extruded, smashed, gathered and gathered inwards in the opposite direction, the single body has the characteristics of unique and reasonable structure, low 
power consumption, good constructed strip seedbed quality and high operation efficiency.