Development Of Mountainous Unpowered Orchard Transporter

Citrus has high nutritional value and medicinal value,which is loved by the majority of consumers.Our country is a big country of citrus planting,but the limited amount of arable land in many citrus orchards in China located in remote mountainous areas or platform,fruits transport in these areas is particularly difficult low efficiency and high labor intensity,under the special condition of planting citrus in our country.It’s difficult to use foreign orchard transporter.Under the support of special funds for the construction of modern agricultural technology system,our country has developed a variety of transporter suitable for slope from 20 degree to 50 degree,such as crawler transporter, monorail transporter,double track transporter etc, these transporter need electricity or fuel as power.But there is no convenient use and low cost transporter using gravity for the large slope mountain orchard in remote area large slope.Based on the speed-regulating damping device,we designed an unpowered orchard transporter.The main research of this paper is as follows:1)Introduce the structure and working principle of the transporter.This transporter don’t need electricity or fuel as power,it’s rely on the gravity of the fruits and transport carriages to complete the transport operations. The transporter only need a 12 V battery as power for the force of fast brake apparatus and the operation is easy.2)By analyzing the speed-regulating damping device the relationship between transport capacity and transport vehicle speed on different slope and minimum counterweights was established.Analyzing the speed-regulating damping device used for the prototype, without taking into account the friction and other factors determine the maximum carrying capacity of the transporter is 1525Kg;Choose the wire rope mutual entanglement sheave,the diameter is 168mm;By calculating the increasing ratio of the gearbox to the prototype is 9 and select the appropriate form of the gearbox;According to the thermodynamic principle to analysis heat dissipation of the speed-regulating damping device.3)Structural design and theoretical analysis of the fast brake apparatus,introduces the design and working principle of the fast brake apparatus.From the analysis determining the safety and reliability of transporter when it is parking.Using ADAMS analysis the fast brake apparatus from static and dynamic simulation,determining the reaction time for fast brake apparatus is 0.045 s,which can meet the needs of rapid braking.4)Structural design and theoretical analysis for other critical parts,such as the control system, transporter vehicle,safety and security device etc.Choose the traction wire rope to match with the transporter.5)Using PRO/E established the three-dimensional model of control part,after the virtual reassemble, the part is intervene, the position and reassembled relation is reasonable.Using ANSYS statics analysis and model analysis for brake shaft to make sure that the rigidity and strength of the structure is appropriate.6)Field experiment was carried out on the transporter,from the experiment, under the actual working condition established the transporter speed with brake drum temperature and determining the best running speed of the transporter.The unpowered orchard transporter has exquisite compact structure,the control part was fixed on the top of the slope, the system can achieve one side of the carriages with fruits driving down in the cement trough or slope at the degrees of 20 to 50 relying on the gravity of fruits in a moderate speed.The transporter vehicle length 1000 cm, width 720 cm and high 750 cm.The best running speed of the transporter is 0.65 ~ 0.80m/s, the maximum load is 1000 kg.