The development and design of hydraulic excavator
Abstract:In recent years, as steel, coal industry and quarrying continued rapid development, excavators engineering machinery requirement increasingly, and is widely used in housing construction, road engineering, water conservancy construction, forestry development, port construction, national defense construction and conditions of fortifications mining extraction industryDue to the complex and changeable, mining operation condition is often with operator way according to the actual working experience, decision, in order to reduce homework to excavate the mining experience operator, the effects will is in urgent need to build up the bucket with various hydraulic cylinder dig trajectory direct corresponding relation, realize the automation. Excavator operationAt the same time because of the complexity of an excavator working environment and conditions, requires the fluidity of hydraulic excavator itself according to the different structural environment makes the corresponding adjustment, this determines the excavator design of ordinary sex, repeatability. However hydraulic excavator working device is a much more freedom, the hinge point bar system to determine the very complex, these factors will cause the hydraulic excavator big investment, design cycle is long, the serious influence on the economic benefits of the manufacturers and national economic development.
This paper mainly design work mainly in the following aspects: in the field surveying and mapping and reference on the basis of relevant information about the hydraulic excavator way of working and working environment Determine the hydraulic excavator, each working device search relevant material and structure of practical experience formula of the overall work device for excavators designed, use proportion method and experience calculation work device each part of basic size and carries on the stress analysis, and then plot its two-dimensional CAD drawings, and then painted with PRO/E 3d model of each device. After each device assembly of its motion simulation
Keywords: Hydraulic Excavator; Working device; Boom;Stick;Face-shovel