Grass trimmer having semi-balance deflection angle and provided with parabolic wing blade LPG (liquefied petroleum gas) engine

Abstract

The invention discloses a grass trimmer having the semi-balance deflection angle and provided with a parabolic wing blade LPG (liquefied petroleum gas) engine and solves the problem of axial movement for the original taper of a magnetic flywheel. According to an equation for arcs of blades, the bending angle is 18 degrees, the chord length b is 20, the ratio of a to b is 0.45, and a refers to the maximum deflection point on the bow; an intermediate technician can make a mold module for the wing section contour line. Outer ends of the blades are sharp ends and have cutting edges, so that entangled materials can be cut off conveniently. The balance deflection angle (phi) exists between an angle bisector of the central angle from two sides of an opening, where a C-shaped ring (56a) of a crankshaft valve (56) is mounted, of a crankshaft (57) to a circle center of the crankshaft and a central connecting line from the circle center of the crankshaft to a large-end circle center of a connecting rod and is in the range of 2-22 degrees, and the single-cylinder semi-balance is improved. A cutter is provided with an outer protecting cover (73) mounted on an inner protecting cover (60), and a long grass pressing wheel (74) with the roller length equal to the grass trimming diameter is arranged on the outer protecting cover of the cutter, so that grass pressing water retention and grassland pattern pressing are facilitated; multiple sharp edges (54a) are arranged on a buttress cutting and grass trimming steel wire (54b) of a grass trimming head (54) of the cutter and cut out on the steel wire by a sharp flat-ended chisel under hammering.

Description

technical field [0001] The invention provides a lawn trimmer belt mower which is used for cutting shrubs in places such as flower beds, courtyards, parks and roads, and belongs to the field of garden machines. Using the innovative method of indirect discharge after passing through the 1.5-meter catalyst muffler pipe, in order to expand the use, the brush cutter is equipped with a mowing head with cutting stacks and mowing steel wires, a cutting disc with internal and external serrations and a controller Four-pronged nozzles, and long pressing wheels for easy pressing and grass patterning for low-emission gasoline brush cutters. Combustion chamber with function wave and matching with ignition device for internal combustion engine with movable receiving electrode and micro-moving discharging electrode, double auxiliary skirt on piston skirt to reduce hydrocarbon emission, and logarithmic differential equiangularity on piston skirt The line skirt turbulent flow back to reduce th...

AI Technical Summary

Problems solved by technology

The muffler is sometimes scalded and unsafe

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