Mower blade structure

Abstract

The invention discloses a mower blade structure. The structure consists of a cutter body, a middle hole, left saw teeth and right saw teeth. The structure is characterized in that: the middle hole used for being fixed to a mower is formed in the middle of the cutter body, the left saw teeth and the right saw teeth are respectively arranged at two ends of the cutter body, the left and right saw teeth are positioned outside the arcs of the concentric circles, the arc length of the left saw teeth and the arc length of the right saw teeth are respectively a quarter arc, a concave arc-shaped bladeis arranged on the cutter body, a pin shaft is arranged on the outer side of the middle hole, a semi-circular metal support is fixed to the pin shaft, the outer diameter of the semi-circular metal support is 1-3 cm longer than the outer diameter of concentric circles of the saw teeth, and the distance between the pin shaft and the cutter body is 1-3 cm. The product can effectively saw off branchesand trunks with large diameters, prolongs the contact time of grass stalks and blades, improves the cutting efficiency of the grass stalks and effectively prevents the saw teeth from making contact with hard objects.

Description

Technical field [0001] The invention relates to a lawn mower accessory, in particular to a lawn mower blade structure. Background technique [0002] The existing special blades for lawn mowers on the market are elongated and have cutting blades on both sides. Because the blades are straight, thicker or tougher straws will have a limited contact time with the blades. Sliding past and leaving the blade, it is not easy to be cut. Moreover, when the existing blades are provided with saw teeth on the outside of the rectangular blade body to cut the branches and trunks, due to the rotation of the blade body, the contact area between the saw teeth and the branches and trunks per unit time is small, and it is difficult to cut the branches and trunks with larger diameters. In the process of mowing, the grass blades are easy to touch hard objects such as stones, which may cause the blade damage and other deficiencies. Summary of the invention [0003] In order to overcome the above-mentio...

AI Technical Summary

Problems solved by technology

[0002] Existing blades for lawn mowers on the market are elongated and have mowing blades on both sides. Since the blades are linear, thicker or tougher grass stems will quickly fade due to the limited contact time with the blades. Slips over and off the edge of the blade, not easily cut

And when the existing blade is provided with sawtooth on the outside of the rectangular cutter body to cut off the branch and trunk, because the cutter body rotates, the contact area between the sawtooth and the branch and trunk per unit time is small, and it is difficult to cut off the larger diameter branch and trunk. The grass blade also has the disadvantages of being easy to touch hard objects such as stones during the mowing process, and easily causing damage to the blade.

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