Welding turnover positioner for harvesting platform of combine

Abstract

The invention discloses a welding turnover positioner for a harvesting platform of a combine. The welding turnover positioner comprises a base, two support arms, a pair of harvesting platform end face clamping centers, a support arm horizontal movement device, a pair of harvesting platform end face clamping center vertical lifting devices and a pair of harvesting platform end face clamping center eccentric adjustment device, wherein the support arm horizontal movement device comprises a movement seat and a horizontal pushing mechanism; the lower end of the first support arm is fixed on the other end of the base; the lower end of the second support arm is fixed on the upper side of the movement seat; the harvesting platform end face clamping center vertical lifting devices comprise rotating shaft cases and vertical lifting mechanisms; and the upper ends of the vertical lifting mechanisms are connected with the bottoms of the corresponding rotating shaft cases respectively. The welding turnover positioner is compact in structure, stable in running, and convenient to operate, mount and maintain; a welder operates very effortlessly; a requirement of welding operation is met to the greatest extent; the welding quality and the working efficiency are improved; and hidden dangers endangering the safety of operation personnel due to the fact that the harvesting platform of the combine is turned down suddenly by an eccentric torque are eliminated.

Description

technical field [0001] The invention relates to an overturning device for welded parts of steel structures, in particular to an overturning positioner used for welding headers of combine harvesters and capable of rotating around its longitudinal center of gravity axis, and belongs to the technical field of welding process equipment. Background technique [0002] The combine harvester header is a long steel structure welded piece with bent and formed thin steel plates welded on the steel frame. It is heavy and bulky, which brings certain difficulties to the welding and forming. The welder has to squat for a long time. The welding operation is very labor-intensive and low-efficiency. After a long time, dizziness will seriously affect the welding quality. [0003] The axis of the center of gravity of the combine harvester header deviates from its longitudinal centerline. During the welding process, it needs to be hoisted and turned over many times. Lifting and turning can only...

AI Technical Summary

Problems solved by technology

When hoisting and turning over, once the center of gravity deviates too much from the lifting center line, the header of the combine harvester will suddenly turn down under the action of the eccentric gravity moment, which is easy to hurt people and poses a great safety hazard. meet the requirements of high efficiency, time saving and labor saving

Images