Extensible guide device of grain-holding claw conveying chain

Abstract

The invention discloses a guide rail device of a conveyor chain for crop-supporting claws. The guide rail device comprises backwardly inclining transportation guide rails arranged on the face of the front end of a reaper. The guide rail device is characterized in that a transportation guide rail located in the middle is provided with a U-shaped connecting body structure; a cover plate which is shaped by one-time pressing is installed on each transportation rail; the transportation guide rail with U-shaped connecting body structure comprises two solid square bar metal bodies which are bent into the shape of a U; two U-shaped solid square bar metal bodies are stacked with spacing; a metal plate which is bent to form a groove is fixed at the free end; the openings of the grooves face the sides of the two U-shaped solid square bar metal bodies; connecting metal plates are arranged at the free end and body-connecting parts; the metal plate at the free end is fixed fastened in a bestriding manner; and mounting hole seats are arranged on the metal plates. The invention has the advantages of convenient assembly and disassembly in repair, strong rigidity, high strength, abrasion resistance, and long service life.

Description

technical field [0001] The invention relates to the field of combine harvesters, in particular to a technology of a guide rail device for a conveying chain of stalk claws. Background technique [0002] In the combine harvester, there is generally a grain stalk conveying device on the front of the harvester. The grain-holding mechanism includes the grain-holding claws and the conveying chains of the grain-holding claws. The guide rail supports and moves along the conveying guide rail under the drive of the sprocket, so that the grain stalk conveying device changes the harvested grain stalk from the vertical position to the horizontal position while transporting it, so the harvested grain stalk is transported during the conveying process. It will cause friction on the parts that are in contact with it, causing wear, especially the wear on the conveying guide rail is more serious. In the existing technology, such as Kubota's series of harvesters, the conveying guide rails are a...

AI Technical Summary

Problems solved by technology

[0002] In the combine harvester, there is generally a grain stalk conveying device on the front of the harvester. The grain-holding mechanism includes the grain-holding claws and the conveying chains of the grain-holding claws. The guide rail supports and moves along the conveying guide rail under the drive of the sprocket, so that the grain stalk conveying device changes the harvested grain stalk from the vertical position to the horizontal position while transporting it, so the harvested grain stalk is transported during the conveying process. It will cause friction on the parts that are in contact with it, causing wear, especially the wear on the conveying guide rail is more serious. In the existing technology, such as Kubota's series of harvesters, the conveying guide rails are all made of stamped sheet metal The structure is made, and the sheet metal structure is a building block structure that is assembled piece by piece, and the conveying guide rail in the middle is a single structure and the outer side of the conveying guide rail doubles as a cover plate, in other words, the cover plate is also a part of the conveying guide rail , its rigidity is small, and the conveying guide rail made of sheet metal structure has low strength, and the working environment is harsh, so it is not resistant to wear, easy to be corroded and perforated and damaged, and the service life is greatly shortened, especially the conveying guide rail. After the outer surface is corroded and perforated, when it needs to be replaced or repaired, it must be completely removed, so replacement or repair is very troublesome

In addition, when it is necessary to adjust the ear end, the entire structure needs to be removed to adjust, which is very troublesome to use

Because it is a block-type sheet metal structure, there are many parts, including many mounting screws, which are very complicated to disassemble during assembly and maintenance. Moreover, because of the many parts, the bolts are easy to rust, and it is difficult or impossible to remove them after they are rusted. Therefore, it also affects the service life and convenience of use

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