Development of a Belt Pick-up One-row Soybean Cutter

Abstract

This study was carried out to develop a belt pick-up type one-row soybean cutter, using physical properties and production conditions of soybeans.The prototype soybean cutter consisted of 4 parts: cutting part, conveying part, collecting part, and travelling part. The prototype soybean cutter was designed to cut soybeans planted with a row spacing of 600 mm, and at a height of 30 mm from the bed bottom using a disk saw. Through various trials with different peripheral velocities of the disk saw and forward speed of the cutter, determined ranges of the peripheral velocity of the disk saw cutting soybeans stems were greater than 18.3 ㎧. Spacing between pick-up belts (clearance) was in a range of 60～90 mm so that soybeans could be picked at heights greater than 25 cm, and the size and shape of the pick-up belt were determined the conventional manual harvesting method. The optimal ratio between the forward speed of cutter and the peripheral speed of pick-up belts were from 1 to 1.2 by theoretical analysis. the pick-up belts had a 35° of tilted angle and 90° of twisted angle to pick up soybeans safely from the plant input to the lower end of the belts and convey soybeans to the upper end of belts nearby a container. The soybeans at the rear container were dropped down on the soybean row with an interval.The effective field capacity of the prototype soybean cutter was 0.136 ha/h, reducing the working hour by 92% when compared with the manual cutting.

Development of a Belt Pick-up Type Two-row Sesame Reaper

“…A stability test of the conveying belt was conducted, as shown in Figure 2, when the sesame was transferred while the conveying belt was titled 90°, just like the single-row bean reaper (Jun et al, 2006;Jun et al, 2008;Jun et al, 2010). The stability test investigated the performance of the conveying belt, considering factors such as the distance (D) from the center of the roller (B), and the grabbing clearance between the …”

“…The cutting part was mounted with adjustable wheels on both sides so that cutting height can be adjusted in accordance with the ridge height for cutting the sesame. The diameter of the disc-plate saw blades used was 355 mm, based on the cutting position and peripheral speed (Jun et al, 2010). The peripheral speed of the saw blades can be changed depending on the running speed of the reaper, ranging from 20.4-32.7 m/s.…”

“…The force applied by the cutter bar also causes threshing loss (Lee et al, 1997). While a singlerow bean reaper (Jun et al, 2006;Jun et al, 2008) is available in the market, a two-row bean reaper has yet to be commercialized because of unstable operating performance (Jun et al, 2011). A walking-type bean reaper has been developed that extracts a predetermined amount of beans to the side of the machine after cutting, so that reaping is carried out while the machine turns around from the edge to the inside (Ichikawa et al, 1981;Sugiyama et al, 1981).…”

Design and Safety Performance Evaluation of the Riding Three-Wheeled Two-Row Soybean Reaper

“…In the local area, a single-row pedestrian-type soybean reaper has been developed and is currently being used by the farmers. However, these soybean reapers require massive labor involvement in the threshing process after reaping work (Jun, 2004;Jun et al, 2006;Jun et al, 2008;Jun et al, 2012). Additionally, a double-row pedestriantype reaper (wheel type) (Jun et al, 2011) has been developed, but has failed to commercialize.…”

“…Furthermore, South Korea's rice growing area is rapidly declining amid a dwindling consumption of rice. To counteract the trend, since 2002, the South Korean government has implemented campaigns and policies that encourage local farmers to grow soybeans, so as to redefine soybeans as a rice-substituting crop and to help increase the self-sufficiency rate for local soybean production (Jun et al, 2006). Most local soybean growers are small-scale with farm land of 1 ha or under.…”