Variable-speed operating control mechanism assembly

Abstract

The invention discloses a variable-speed operating control mechanism assembly, relating to the technical field of mechanical transmission; the upper end and the lower end of a handle bar (2) are respectively and fixedly connected with the central axis (7) of an operating control handle ball (1); a fastening screw (8) penetrates through two fork-plate holes of the forked handle bar and the hole ofthe central axis (7) between the two fork plates and is connected with a slotted nut (4) after penetrating through a return torsion spring (6) and a return torsion spring support sleeve (5); and bothsides of the openings of the two fork plates at the lower end of the handle bar respectively correspond to the lower parts of a rocker arm at one side (11) and a rocker arm at the other side (12). The invention utilizes a single bar to manipulate two flexible axes to realize independent push-pull action, thereby driving a transmission gear matched thereof to realize shifting action, meanwhile, under the action of the return torsion spring, a neutral gear handle is ensured to be at a mechanical locking position; the two rocker arms move independently without mutual interference; and the handlebar sways to right and left in an H-typed slot which is arranged on a guide slot plate with a handle and can automatically return to meso-position, thereby preventing accidents from occurring.

Description

【Technical field】 [0001] The invention relates to the field of mechanical transmission, in particular to an agricultural machinery speed change control mechanism assembly used to complete gear shifting of a gearbox suitable for vehicle models in an agricultural harvester. 【Background technique】 [0002] my country is a big agricultural country, so there is a large amount of agricultural equipment, especially all kinds of combine harvesters; due to design reasons, the current domestically produced harvesters are mainly driven by mechanical linkage structures, which is not only expensive, but also in terms of design, layout, There are many problems in installation, commissioning and post-maintenance; with the popularization of agricultural machinery and the application of flexible shafts in this field, "it has been partially used on corn harvesters and some wheat harvesters, and has been effectively verified"; It is proved that the flexible shaft control structure can improve th...

AI Technical Summary

Problems solved by technology

Most of the existing shifting controls are mechanical linkage structures, and there is no function of automatically returning to the neutral position. Not only is the cost high, but the control performance is extremely poor, and it cannot meet the requirements of convenience, easy operation, and convenient maintenance of the equipment in use.

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