Technical Characteristic
1. Outer-located return oil filter can well clean.
2. Add rolling thresher, rpm warning device to indicate speed and enforce reliability.
3. Convenient mini-computer indicator.
4. Convenient and reliable four-connecting rod.
5.3.66m cutting width and large feeding capacity increases efficiency.
6.1000 series transaxle with high bearing and driving capacity.

Performance Comparison Between Model 3688 Harvesters with single-longitudinal Axial-flow Separating Device or Straw-walker Separating Device

1. Comprehensive performance characteristics of harvester 3688
Shifeng combine harvester 3688 adopts blade-feeding, Longitudinally-tilted axial-flow cylinder to replace traditional cut-flow cylinder feeding, horizontal transverse axial-flow cylinder
Threshing-separating structure. In this structure, axial-flow cylinder is tilted against the harvester body, greatly increasing threshing-separating time, effectively reducing loss; There are a few more options for different rotating speeds of threshing cylinder according to different crops and ripeness, greatly improving working adaptability; Double-layer longitudinal balance screen, completed with centrifugal stepless speed change fan, makes cleaning area larger; Air force can be adjusted in a larger range, which makes cleaning more complete, improves cleanness. New-type residue handling system makes residues directly back to threshing cylinder for second-time threshing, remarkably improving threshing effect with less loss; Adopting of straw-walking-wheel straw-removing system shortens length of the machine, makes machine structure more reasonable. At the same time, straw grinder can be equipped according to user's need for straw-back-to-field; Coupling connection between cutting platform and gap bridge is adopted, so cutting platform can be dismantled freely with more options for different needs of users, saving cutting platform-transporting and maintaining time. Shifeng combine harvester 3688 has compact structure, reliable performance, sufficient power reserves, high production efficiency and comprehensive economic benefit.
2. Structure and analysis of axial-flow combine harvester
Axial-flow combine harvester means harvester adopting axial-flow threshing-separating device. Its characteristics can be read that: Crop in threshing-separating device, under action of cylinder, moves around cylinder along direction of cylinder axis, and seeds are separated out with action of centrifugal force from rotating at the same time. Reciprocal straw walker in traditional structure is replaced by centrifugal separating device by placing axial-flow cylinder and concave on the position of straw walker of traditional threshing-separating device thus to form centrifugal separating device. Axial-flow threshing-separating device combines threshing and separating together in a 2-in-1 manner, meeting the requirements of improving production efficiency without enlarging volume. Axial-flow combine harvester has longer threshing time, mild action, centrifugal separation, good threshing performance, less broken seeds, clean separating effect, strong fitness of crop and geographic conditions, can complete harvesting works of many kinds of crop, and is widely used in many countries in the world. Single-cylinder system has simpler structure. In view of modem trend, combine harvester adopting longitudinal axial-flow threshing-separating device keeps a better development momentum.