A frame-split gantry beam of an electric drive mining dump truck

Abstract

The invention discloses a split type gantry beam for an electric drive mining-use dumper frame and belongs to the technical field of dumper frames. A split structure of an upper gantry beam body, a lower gantry beam body and a deck support is adopted. The gantry beam structure is simple in positioning and point splicing process, welding formation is easy to control, the attachment situation between the gantry beam and a corresponding longitudinal beam is easy to adjust, and a mounting process is simplified to a great degree; front suspension supports, pull rod seats and steering middle seats are assembled, welded and then machined, and the relative position of a hole is easy to guaranteed, so that positioning parameters of a front axle main pin and a steering trapezoid can be strictly guaranteed; medium machining and finish machining are adopted for small assemblies, machining is easy to conduct, the cycle is short, cost is low, and production is easy to arrange; a casting structure is adopted for the complex stressed position, and a swallow-tail form structure or a stiffened plate is adopted to reduce structural sudden change, so that the gantry beam can bear a large bending load, a twisting load and an impact load, stress concentration of a stress concentrated area is reduced, breakage and damage of a structural piece are avoided, and meanwhile various functional requirements are met.

Description

technical field [0001] The invention relates to a gantry beam structure of an electric transmission mining dump truck frame and belongs to the technical field of dump truck frames. Background technique [0002] Mining dump truck is the key equipment in open-pit mining and large-scale earthwork construction. It is a professional equipment used for ore or earthwork transportation. It has the characteristics of heavy load and high work efficiency. At present, mining dump trucks have a trend of becoming large and gigantic, and the requirements for the strength of the load-bearing structure of mining dump trucks are becoming more and more stringent. The frame of the mining dump truck is used as the base of the whole vehicle, and the loads of other components and goods are applied to the frame, causing the frame to bear the effects of gravity, impact load, torsional load and alternating load at the same time, so the frame is required It has good properties such as stiffness, stre...

AI Technical Summary

Problems solved by technology

However, the gantry beam in this technology is an integrated structure, and it is very difficult to hoist the longitudinal beam through the gantry beam for installation and operation. If there are manufacturing errors, it is not conducive to adjusting the fit between the gantry beam and the longitudinal beam.

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