Secure pruning shears for apple trees

Abstract

The invention relates to a safety pruning scissors for apple trees, which includes a lock, a shear handle, a telescopic device, a knife back, a friction surface, a blade, a balance surface, an inner surface, an outer surface, an outer inclined surface, a hexagonal screw, a support point, and a gasket , a nut, a spring and a blade, the lock is located on the scissor handle, the two ends of the spring are respectively located on the scissor handle, the telescopic device is located on the scissor handle, the blade is located on the scissor handle, the blade, The outer surface, the inner surface, the balance surface and the knife back constitute the blade, the hexagonal screw is fixed on the supporting point through a nut, the gasket is located under the hexagonal screw, the outer inclined surface is located on the outer surface, and the scissor handle is set With plastic protective cover. The direct distance between the support point and the scissor handle of the scissors of the present invention is increased, which is equivalent to shortening the resistance arm of the lever, and the labor-saving effect is more obvious. The height of the branches, so that the performance of fruit tree pruning shears is significantly improved.

Description

technical field [0001] The invention relates to the technical field of fruit tree cultivation, in particular to an apple tree safety pruning scissors. Background technique [0002] Existing fruit tree pruning shears are made up of two crossing levers, the crossing point is a rotating shaft, the two sections of lever resistance arms in front of the rotating shaft have a blade, and the force arms of the two ends of the rotating shaft behind the levers are two handles. Common sense in mechanics shows that when scissors cut branches, the closer the pressure point of the blade to the branch is to the support point, that is, the closer to the rotating shaft, the less effort is required. Therefore, the distance from the rotating shaft to the blade should be shortened as much as possible, but the closer the distance between the rotating shaft and the blade , the guide operation between blade and blade is smaller, and it is easy to jam knife, and existing fruit tree pruning shears ca...

AI Technical Summary

Problems solved by technology

[0002] Existing fruit tree pruning shears are made up of two crossed levers, the intersection point is a rotating shaft, the two sections of lever resistance arms in front of the rotating shaft have a blade, and the force arms of the two ends of the rotating shaft behind the levers are two handles. Common sense in mechanics shows that when scissors cut branches, the closer the pressure point of the blade to the branch is to the support point, that is, the closer to the rotating shaft, the less effort is required. Therefore, the distance from the rotating shaft to the blade should be shortened as much as possible, but the closer the distance between the rotating shaft and the blade , the smaller the guiding operation between the blade and the blade, the easier it is to jam the knife. The existing fruit tree pruning scissors cannot be retracted and cannot cut to higher branches, which increases the difficulty of pruning

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