Saw chain of felling saw

Abstract

The invention discloses a saw chain of a felling saw. The saw chain comprises connecting chain links and cutting chain links connected through driving pieces, wherein the driving pieces are rotatably connected with the connecting chain links and the cutting chain links through rivets; the cutting chain links comprise left cutting chain links and right cutting chain links which are arranged in turns; the left cutting chain links comprise main connecting pieces, sub connecting pieces, connection parts connected between the main connecting pieces and the sub connecting pieces, cutting blades connected on the sides, away from the connection parts, on the main connecting pieces, and limiting heads which are integrally connected on the main connecting pieces and are positioned at the front of the cutting blades; notches are reserved between the limiting heads and the cutting blades; and the left cutting chain links are formed through stamping a complete metal piece. According to the saw chain, the structure is ingenious, the strength is high, the cutting speed is high, and the service life is relatively long.

Description

technical field [0001] The invention belongs to the field of electric logging saws, and in particular relates to a chain structure of the logging saw. Background technique [0002] The sawing chain of the existing common logging saw includes a connecting chain link, a left cutting chain link and a right cutting chain link, and the left cutting chain link and the right cutting chain link are arranged alternately, and the adjacent left cutting chain link and the right cutting chain link There is a connecting chain link between them, and the adjacent chain links are connected by driving pieces and rivets; the general cutting chain link includes two connecting pieces, one of which is integrally connected with a generally L-shaped cutting blade, And the end of the blade at the front end of the cutting blade protrudes slightly forward. At the moment when the blade contacts the object to be cut, the cutting blade is subjected to a force opposite to the cutting direction, and a comp...

AI Technical Summary

Problems solved by technology

[0002] The sawing chain of the existing common logging saw includes a connecting chain link, a left cutting chain link and a right cutting chain link, and the left cutting chain link and the right cutting chain link are arranged alternately, and the adjacent left cutting chain link and the right cutting chain link There is a connecting chain link between them, and the adjacent chain links are connected by driving pieces and rivets; the general cutting chain link includes two connecting pieces, one of which is integrally connected with a generally L-shaped cutting blade, And the end of the blade at the front end of the cutting blade protrudes slightly forward. At the moment when the blade contacts the object to be cut, the cutting blade is subjected to a force opposite to the cutting direction, and a component of the force will produce a radial force on the rivet. The shear force, the other component force will produce axial tension on the rivet, which will cause pressure between the rivet head and the connecting piece, and loosen the contact part between the rivet head and the connecting piece. After the rivet and the connecting piece are loose, due to the connecting piece The position of the rivet moves to different degrees, and the shear resistance of the rivet also decreases. The rivet is especially stressed on the side close to the cutting blade, which is prone to strain or even breakage, and there is a big safety hazard.

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