Small-corner pantograph head design method

Abstract

The invention discloses a small-corner pantograph head design method. According to the method, corners of pantograph heads are optimized by utilizing mature dynamic software and an integrated generaloptimization algorithm library by using a method for relative position parameter coordinates of pantograph hinge points, so that deflection angles of the pantograph heads are remarkably decreased, thepantograph heads can achieve a nearly translational motion state in working ranges of pantographs, and contact areas between the pantographs and contact nets are increased, thereby effectively improving the current-receiving quality of the pantographs and decreasing the pantograph net damage.

Description

technical field [0001] The invention relates to the technical field of rail vehicle pantographs, in particular to a design method for a pantograph head with a small rotation angle. Background technique [0002] When the single carbon sliding plate is in contact with the catenary to receive current, the contact area is easily affected by the relative angle between the carbon sliding plate of the pantograph head and the contact line of the catenary. Since the catenary is a stationary device and the vehicle is a mobile device, the vertical height of the contact line of the catenary relative to the vehicle changes during the movement of the vehicle, which causes the working height of the pantograph to change, thereby causing the carbon slide to be opposite to the contact line. Angle changes. When the deflection angle of the bow head carbon skateboard is large, the contact between the single carbon skateboard and the catenary changes from line contact to point contact, and the c...

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Problems solved by technology

[0005] from image 3 It can be seen from the figure that there are many parameters, which must include the parameters of the main structure. The equations contain nonlinear functions such as sine, cosine, and tangent. completely changed structure

The entire calculation and analysis process has a long cycle, the equation group solution algorithm and optimization algorithm are inefficient, and the algorithm is unstable. When the distance limit of the initial condition of the pantograph is large, it is difficult to obtain the structural optimization solution quickly and efficiently, especially when there are many When the design variables are relatively strict or the relevant constraints such as the size of the main structure are relatively strict, it is not possible to obtain the optimal solution of the structure

[0006] In this way, more balance bars must be added to meet the requirements of the bow head rotation angle and reduce the restrictions on the main structure of the pantograph, so the topological structure and solution algorithm of the degree are completely changed, and the difficulty of programming and debugging is greatly increased. , the design cycle is long, most of the time is spent on programming and algorithms, and there is little performance analysis of the pantograph itself

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