RESEARCH AND ANALYSIS OF BIONIC GOLDEN CICADA PEANUT DIGGING SHOVEL
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Abstract:
In order to reduce the high resistance problem during peanut digging shovel operation and improve the soil loosening effect, a bionic peanut digging shovel was designed according to the streamlined profile of the head of the golden cicada, and the range of values of the digging operation parameters was analyzed. A discrete element model was developed to verify that the operational resistance of the bionic excavation shovel is lower than that of the flat shovel. The reliability of the simulation test was confirmed by conducting a resistance test on the excavation shovel through a soil trench test. A three-factor, three-water orthogonal combination test was designed to determine the optimal operating parameters of the excavation shovel: the bevel angle of the shovel blade was 55°, the digging depth was 130 mm, and the width of the shovel face was 309 mm. The paper can provide a reference for designing and optimizing peanut-digging shovels.Keywords:
Shovel
Digging
For the peanut combine harvester excavation process resistance, poor soil crushing effect and poor reliability of the problem, the excavation shovel optimization needs improvement. Firstly, a mechanical model of the resistance of the excavation shovel was established to investigate the key factors affecting the degree of resistance of the excavation shovel. Next, the design of the main parameters of the excavation shovel was done to determine the range of values of the main factors affecting the peanut excavation shovel. EDEM software was used to simulate and analyse the excavation process and to explore the influence law of excavation shovel parameters on the resistance. Improvements were made to the excavation shovel, discrete element simulation tests were used to demonstrate that the optimized excavation device had better resistance reduction and soil crushing than the original device. By designing a three-factor, three-level orthogonal simulation test, the best parameters for the excavation shovel were obtained: the shovel surface inclination is 20°, the excavation depth is 131mm, and the shovel surface width is 277mm. Field trials were conducted under the optimal combination of parameters to test the reliability of the improved digging shovel. Compared with the operating effectiveness of the original machine, the result was improved to some extent. It proves that the optimized design of excavating shovel is reasonable and can improve the operation effect of peanut harvester.
Shovel
Digging
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Root-tuber crops are buried under the ground, thus, the mechanization harvest should apply digging method. However, the row-aligning angle of the shovel can directly influence the digging effect. Therefore, a set of auto-aligning technological equipments were designed to solve this problem and achieve aligned digging. This paper mainly analyzes the design of above mentioned equipments as below: A right-left angular displacement sensor is added in the front part to achieve auto-induction and signal transformation of the digging angel through comparison of the pressure angle. The adjustment of the control equipment can be achieved by the adjustment of signal when it goes through magnetic exchange valve. And with the help of cross slide way, the digging harvest machine can modulate the shovel timely and efficiently. Experiments demonstrated that such auto-row-aligning equipment can improve the digging effect.
Digging
Shovel
Mechanization
Root (linguistics)
SIGNAL (programming language)
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We design a zheergen cropper with walking tractor in the requirement of harvesting zheergen.The most important design is vibration digging shovel and vibrating screen.At present,the general digging shovel in agricultural machinery is stationary one.But along with the advance of agricultural machinery,there appears the vibration digging shovel.Compared with stationary digging shovel,the vibration digging shovel has its advantages:reduction of power consumption and increase of ground breaking.In most cases,agricultural machinery,in simple and compact structure,can be used to harvest crops in soil,combined with vibration digging shovel and vibrating screen.
Digging
Shovel
Tractor
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The heavy harden soil,more rain damp climate,when mining is winding grass yongzheng soil etc,the design of a compound digging shovel and auxiliary transmission device rhizomes crop excavator,can be used for potato.sweet potato,peanut and other crops of mining operations.Introduce the principle of work,the major parts of the design thought and characteristics,etc.
Shovel
Digging
Excavator
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Introduced concrete parameter that fit for shovel of tuber digger in different area and different working condition, discussed the influence that different parameter produced on potato digger, established main technical parameter of digging shovel.
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Digging
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First of all,rotary screw maintenance of mining excavation equipment in the shovel plate screw hole and raking pawl reducer with body of experience to share,then the digging machine,belt conveyor equipment and technology innovation and transfer station are discussed,the research for the mine excavation equipment maintenance and improve the production efficiency be reference value.
Digging
Shovel
Scraper site
Excavator
Trouble shooting
Belt conveyor
Heavy equipment
Production efficiency
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By comparing analysis, the framework of digging parts of peanut combine harvester has been decided. Based on the condition that digging shovel is competent for producing requirements, formulas for the principal parameters of digging shovel have been driven out theoretically. The test results show the digging shovel is credible with satisfactory performance.
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Shovel
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In order to improve production efficiency and reduce labor intensity,make potato harvesting simplified,a new type of potato combine harvester was designed according to agronomic requirements.The main functions for potato harvesting,such as mining,separation,cleaning and classification,have been integrated in this combine harvester,among which the potato classification is the key technique link.The potatoes can be divided into different sizes,and then put into different bags(boxes) directly.This paper mainly describes the basic design parameters related to digging shovel,separation,cleaning and classification devices of the design.
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Digging
Combine harvester
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Offset digging shovel and three-roller mechanism were developed to realize root stubble digging, picking up, stubble-soil separation and root stubble paving. Structure and kinematics parameters of work part were determined by analyzing digging characteristic of the shovel and kinematics of the three-roller mechanism. In the field test, the offset digging shovel had good digging effect and small resistance, and the three-roller mechanism had high capability of picking up, stubble-soil separating and paving. This study laid the foundation for further research and development of corn stubble harvest machine.
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Shovel
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Coal strip mines are usually large scale operations that excavate millions of tons of rock per year; thus optimization of the overall excavation costs can bring quite significant savings.The Operations Research problem involved is explained, and a method of optimization is proposed. This method depends on the creation of a ‘diggability function”, which is obtained by correlating the shovel digging rate to the average displacement velocity of the rock broken by blasting with explosives. The correlation is made possible by the use of the blasting model BLASPA to simulate the rock velocity; it is converted into a mathematical relationship by means of a least square approach.The “diggability function”, together with simulated values of the percentage of rock cast far enough to require no handling by the shovel, are combined to calculate the average shovel costs per cubic yard of rock moved. These costs are added to the drill and explosives costs to arrive at a prediction of overall unit excavation costs. It is found that if the strength of the basting be increased, the overall unit excavation costs go through a minimum value.The paper concludes that (i) savings which can be found by this optimization method are significant; and (ii) the method is practical in that it requires only a few field measurements, this being desirable because mines object to numerous field teste which might disturb operations.
Shovel
Digging
Overburden
Drilling and blasting
Earthworks
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