SU1165286A1 - Lawn mower - Google Patents

Description

The invention relates to agricultural and municipal engineering, in particular to devices for mowing grass, and can be used in public utilities.

Known lawn mower, containing the casing, a knife and a drive mechanism Pu.

The disadvantages of the device are 10 low performance and high noise.

Known lawn mower, containing the internal combustion engine, the casing, inside which is placed the knife 15 and the nozzle of the exhaust pipe [2].

In a known mower, the noise level is low, but the process energy intensity is high.

The purpose of the invention is to reduce the energy consumption of the process.

This goal is achieved by the fact that the knife is equipped with blades, and the nozzle is directed towards the movement of the blades of the knife. 25

1 schematically shows the proposed lawn mower / in FIG. 2 view And figure 1.

The motor mower contains a casing 1 with an outgoing window 2 and a roof ₃ θ ku 3 with a hole 4 in its center.

On the cover 3 of the casing there is an internal combustion engine 5, the axis of the crankshaft 6 of which is located vertically. On the shaft 6 is mounted a knife 7, which is a plas- ³⁵ mire, which working edges sharpened. Blades 8 are made on the knife 7.

A nozzle 9 is installed under the casing, the outlet 10 of which is directed in the direction of travel of the blade ⁴⁰ current 8 when the shaft 6 rotates. brackets 12, in which a hinge 13 has a roller 14.

The mower works as follows. "

When the mower moves (the direction of movement is indicated by the arrow), the grass is bent with a roller ^ 14, which at the same time starts to rotate and rolls over the bent grass. Under the drum 1, the grass is unbent and cut by the knife 7, which receives rotation from the shaft 6 of the engine 5. The cut grass is thrown by the knife 7 to the casing 1 and pressed against its inner part, where it is crushed by the ends of the knife 7 and the crushed grass is thrown through the window 2 and the casing. At this, the exhaust gases of the engine 5 through the pipeline 11 enter the nozzle 9, where it is additionally accelerated and through the outlet 10 with great speed come on the blades 8 of the knife. 7. Energy exhaust. gases is transmitted through the blades 8 to the knife 7, creating additional torque. In addition, the exhaust gases flowing from the hole 10 of the nozzle 9, contribute to the transportation of crushed grass located on the inner surface of the drum 1, to the outflow window 2.

I

The use of lawn mowers will reduce the energy intensity of the process as a result of the use of energy of exhaust gases. In addition, the effort to move the mower is reduced by the fact that due to the installation of a rotating roller in the front of the casing of the mower, the sliding friction of the grass bent on the casing of the mower is replaced by rolling friction. Since the proposed mower, like most small-sized mowers, “moves under the action of an operator's effort, reducing the effort to move the mower facilitates the work of the operator and also contributes to increased productivity.

1165286

Type A

Claims (1)

A MIXER, containing an internal combustion engine, a casing inside which a knife and an exhaust pipe nozzle are located, characterized in that, in order to reduce the energy intensity of the process, the knife is provided with blades and the nozzle is directed in the direction of movement of the knife blades. (nineteen) ι 1165286.