More and more townspeople are buying a summer house not for growing potatoes on it, but for relaxing. Therefore, having planted only a few bushes of roses or lilies and a small group of birches and pines, they strive to surround all this splendor with a real odorous lawn, for the sake of cleanliness and impeccable appearance of which all the best lawn mowers in the world were invented.
Today they are produced by at least thirty well-known companies, supplying two hundred and thirty of their modifications to the market. Each of them has its own purpose, for example, Honda lawn mowers are needed for the construction of large areas. Small hand-held models do a good job mowing wet grass on a flat and well-groomed grass cover. Completely different systems are designed to cut off overgrown weeds and grass dying on the root in the area where the hosts appear infrequently.
The knife for the lawn mower is a fundamental working unit. Depending on the type of grass cutting system, this type of technique is classified into spindle and rotor mechanisms. In one case, the knife for a lawn mower is mounted on a cylindrical drum, in the second on a vertically located shaft.
In rotary models, a two-blade lawn mower knife is most often used, although there are machines with four blades. During the rotation of the shaft creates a powerful air flow. He grabs the remains of mowed grass from the blades of the knife and draws them into a special container or sprayes on the lawn, thereby cleaning the mechanism and preventing its clogging.
Some manufacturers have improved the cutting mechanism by making the lawnmower knife tilt away from the axis while it is in contact with a bump or stone. As a result, he becomes more protected and less dull. A dull knife needs to be dismantled, sharpened, and then, having set in place, it is imperative to balance. It consists in creating an equilibrium state for each of its sides or wings in a horizontal position. If we neglect this, then in the mechanism during operation there are so high vibrations that the mower can break down.
Some more expensive models relieve the owner of this trouble. Their developers decided to install the knives on the cross or bar. This makes it easy to change one of them or make alternate sharpening. There are models in which knives are mounted on couplings. They provide two options. In one clutch, there is a cushioning soft material that simply collapses when it collides with an obstacle and thereby saves the knife. In another, the clutch operates in automatic mode. It is able to simply turn off the cutting mechanism when an obstacle occurs, and its setting can be adjusted by the operator controlling the lawn mower.
Spindle models of lawn mowers are provided with movable and fixed knives. The drum on which they are mounted rotates itself. In this case, the movable knife captures the grass and feeds it to the blade of the still. They process the lawn with high quality, but their productivity is very low.