(1) Overall design and working principle
The conveying and cleaning device of the elevator chain and shovel chain combination peanut harvester is composed of an elevator chain. Taking a typical shovel chain combination peanut harvester as an example, it mainly includes a hanger, a frame, a digging shovel, an elevator chain device, The specific structure of the vibrating device, the grating, the ground wheel and the power transmission device is shown in Figure 1. During operation, the digging shovel shovels the bottom of the peanut root at a certain angle to shovel the peanuts into the soil. The lifting chain transports the shoveled peanuts and soil to the back and upward, and the vibration wheel moves with a certain amplitude in the vertical direction of the lifting chain. Vibrate back and forth to shake off the soil from the roots of the peanuts. After removing the soil, the peanuts are sent to the highest end of the elevator chain, and then thrown to the rear fence. Pick up after drying.
1. Digging shovel; 2. Lifting chain device; 3. Ground wheel; 4. Vibrating soil removal device; Input shaft; 10 a gear box; 11 a vibration force output shaft; 12 a vibration belt transmission mechanism; 13 a liter transport chain power output shaft; 14 a liter transport belt transmission mechanism
Fig.1 Structure diagram of shovel-chain combined peanut harvester
(2) Design of key components
① Transmission system design
The shovel-chain combined peanut harvester is used together with the tractor, and the universal joint of the tractor power output shaft is connected with the power input shaft of the machine to provide the source power for the machine. The transmission system of this machine is divided into two paths, one path transmits power to the double-click vibrating wheel, which plays the role of vibrating and clearing soil; the other path provides power for the lift chain rod assembly to transport the dug peanuts backwards. The two-way transmission system is independent of each other and symmetrically arranged on both sides of the machine, which makes the machine have better balance and ensures the smooth operation of the machine during operation.
②Design of vibrating soil removal device
The structure of the vibration cleaning device is shown in Figure 2, which consists of a support arm, a rod, an eccentric sleeve, a drive shaft, a vibration shaft, a herringbone mounting plate and a vibration wheel. The drive shaft and the vibration shaft are respectively installed on the frame of the harvester, and the drive shaft is driven by a transmission pulley. There are supporting arms, rods, eccentric sleeves, herringbone mounting plates and vibration wheels on both sides of the lower end of the elevator chain. The eccentric sleeves are fixedly connected with the drive shaft. The ends are respectively hinged with one end of the support arm and the shock shaft, and the other end of the support arm is hinged with the frame. The top of the herringbone mounting plate is fixedly connected with the shock shaft, the two foot ends are respectively hinged with the shock wheel, and the lift chain is supported by the shock wheel. When the vibration drive shaft rotates, the rod does eccentric reciprocating motion on the drive shaft, so that the vibration wheel vibrates back and forth in the vertical direction of the lifting chain, and the chain rod assembly during the lifting process will constantly shake off the soil at the root of the peanut.
1 An arm: 2 a drive shaft sleeve; 3 a rod; 4 a transmission pulley; 5 an eccentric sleeve; 6 a drive shaft; 7 a vibration shaft; 8 herringbone mounting plate; lift chain
Figure 2 Structural diagram of vibration and soil removal device
The research and development of the lift chain and shovel chain combined peanut harvester can complete the functions of excavation, soil cleaning and laying at one time. The total loss rate is 1.74%, the damage rate is 0.4%, and the soil carrying rate is 7.25%. Its pure productivity reaches 0.29 h㎡/h, which can save more than 70% of man-hours and reduce the cost of harvesting operations compared with manual harvesting.
Post time: Mar-17-2022