When a walking tractor pulls a one-way double share plow, the driving wheel on one side is on the uncultivated land and the driving wheel on the other side is in the furrow. The adhesion coefficient between the two wheels and the ground is different and the slip rate is different, resulting in the deviation of the unit in one direction. For Dongfeng-12 walking tractor, the following adjustments can be made: adjust the clearance value (swing clearance) between the left and right adjusting screws on the traction frame and the intermediate connecting frame, adjust the 681 one-way double share plow to about 1.5mm, and the 1ls-220 and 701 one-way double share plow to about 5mm. During ploughing, if it is found that the tractor still deviates to the right, loosen the two fastening screws, shorten the extension of the left adjusting screw and lengthen the extension of the right screw. Until the handrail is released and the unit can run normally along the ditch wall.

 

2. Rotary tillage

 

Possible causes of eccentric driving in rotary tillage operation: the tail wheel is deformed again, the tail axle is not assembled in place in the fork, etc., resulting in the deflection of the tail wheel; the bearing on the tail axle is damaged or seriously worn; the plow is wrongly installed, broken or dropped. When deviation occurs in rotary tillage operation, relevant parts shall be corrected, repaired, reassembled or replaced according to specific conditions. Before the problem is solved, the steering clutch shall not be used to correct the deviation, but the method of pushing and pulling the handrail frame shall be used to correct the deviation.

 

3. Seeding operation

 

When the walking tractor is used for sowing, there are two supporting conditions: one is the traction planter. Second, synchronous transmission. The main reasons for the deviation of the unit in sowing operation are that the installation height of the sowing head (or ditcher) in the sowing direction is inconsistent or asymmetric, the configuration and installation of the rotary cutting plow are wrong or broken and fall off, the traction frame is collided, deformed and deviated, etc. Due to the above reasons, the resistance in the sowing direction is unequal during sowing, resulting in torsional torque, resulting in the deviation of the unit. Therefore, before sowing, the technical status of the planter shall be carefully checked, the rotary plow shall be configured and installed according to the regulations, and the sowing head (or ditcher) shall be configured symmetrically to ensure that the installation height is consistent and meets the agronomic requirements.

 

4. Harvesting operation

 

The walking tractor is mainly equipped with 4GL-130 harvester. The main reasons for the deviation of the unit are: the clearance adjustment of the cutter in the cutting direction of the harvester is different. The cutting resistance is different: the cutter is high and low at the same time, the stubble height is different during harvesting, and the operation resistance is different; Improper selection of cutting width; The ground is uneven. Corresponding measures shall be taken for specific reasons.

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