Lightweight Design And Dynamic Research On The Lifting Mechanism Of Schnabel Car

Lifting mechanism of railway schnable car is not only Schnabel Car holding the goods key part of diversity, but also has important effect to improve the Schnabel Car transport speed. With the rapid development of the national economy, the demand of Schnabel cars will gradually become normal, and how the lightweight design of lifting mechanism, improve the efficiency of clamp vehicle transport becomes particularly important.In this paper on D38 Schnabel Car main bearing part clamped beam as the research object, using shape optimization and structure size parameters are optimized to achieve clamping beam lightweight design from lighter weight and reasonable distribution of material clamping beam configuration. The research contents of this paper mainly include the following parts:(1) Analysis of Schnabel cars to enhance the structure composition and the pressure cylinder driving the advantages of planar five bar mechanism, to build a three-dimensional model of the clamped beam, the force analysis of clamped beam; clamp beam finite element model is established, stress analysis, the clamped beam of the harsh conditions, based on such a condition of clamped beam for topology optimization, lightweight clamp beam concept model derived from; conceptual model according to the clamping beam shape characteristics and engineering of manufacturing principles determined clamp beam shape optimization model of clamp beam conditions.(2) Structure by weight lightest, static minimum force as the goal of response surface optimization model, using the goal driven optimization technique is used to solve the problem, draw the optimal clamping beam size parameters. Optimization and comparison before and after the clamp beam structure, analysis shows that lightweight clamping beam quality significantly reduced, carrying the same amount and the optimization result is distinct.(3) On the selection of hydraulic cylinders driven planar five bar lifting mechanism analysis, solving lifting mechanism of the degrees of freedom; derived goods by using analytical method, clamp beam and column pressure hydraulic cylinder displacement, speed and acceleration expression to draw the displacement, velocity and acceleration diagram, for reasonable selection of lifting speed provide a theoretical basis.(4) Establish Schnabel Car lifting mechanism of rigid flexible coupling model, the lift object during the process of displacement and beam as a flexible clamping deformation analysis; different simulation speed settings, goods analysis of displacement, speed and acceleration of changes in the law, for the reasonable selection of the pressure output speed of the cylinder and provide a theoretical basis; by using virtual prototype technology, lifting mechanism, as a whole, modal analysis, analysis of research with the increase speed of transportation of Schnabel Car, lifting mechanism may be the vibration shape.