Based on years of experience in potato harvesting and the needs of users in different regions and environments, we have independently developed a combined harvester that uses ton-bag packaging.

Looking at the potato planting situation in my country, potatoes can be classified according to their uses as commercial potatoes, processing potatoes, starch potatoes, and seed potatoes. The planting area also encompasses different environmental conditions such as sandy soil, loam, and black soil, and different varieties exhibit different biological characteristics.

The 4UL-170E ton-bag harvester uses a vine-separating screen-type impurity removal mechanism. The harvesting process is unaffected by drip irrigation belts; the more intact the vines, the better the harvesting effect, and it can even harvest without killing the vines. During the machine harvesting process, potatoes are protected from rolling and falling at every stage, resulting in high overall protection and minimal damage.

Working Principle:

A multi-stage conveying grid device effectively reduces the relative movement of potatoes, minimizing collision losses.

A buffer device is located above the bagging device at the rear of the harvester, with an actual volume of approximately 0.4 m³. It uses flexible composite materials and has an internal buffer and blocking device.

The hopper opening and closing is controlled by a hydraulic cylinder at the bottom of the hopper for bagging, minimizing relative slippage of potatoes during buffering and bagging, thus reducing damage from impacts.

A hybrid transmission system is used, but unlike other systems, it lacks an independent hydraulic power unit. All hydraulic power is derived from the tractor. Therefore, it is recommended that the tractor's hydraulic system be reliable and have a relatively relaxed PTO (potato rotation speed).

A vine-separating screen is used to remove potato vines, effectively separating larger vines, drip irrigation tape, and other debris. The machine features independently rotating rollers, minimizing the probability of entanglement and jamming.

Experiments have shown that harvesting with vines significantly improves debris removal compared to mechanical vine cutting (when harvesting with vines, intact vines facilitate vine-separating and debris removal, fewer broken vines reduce manual sorting, and no vines remain in the furrows, reducing the likelihood of clogging the cutting disc). It is also more suitable for sandy soils and areas with long vines.