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Knife blade rotary grass cutter of rotary grass cutter

A lawn mower and rotary technology, which is applied in the direction of harvesters, cutters, agricultural machinery and implements, etc., can solve the problems of howling and other problems, and achieve the effects of low cost, noise reduction and uniform grass clippings

Inactive Publication Date: 2009-05-27
力帆科技(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the blades are rotating at high speed, when the airflow passes through the vents, the airflow and the vents will resonate, resulting in whistling

Method used

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  • Knife blade rotary grass cutter of rotary grass cutter
  • Knife blade rotary grass cutter of rotary grass cutter
  • Knife blade rotary grass cutter of rotary grass cutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention is further described below in conjunction with accompanying drawing and embodiment:

[0020] First, refer to figure 1 , figure 2 and image 3 , shown in the figure is the lawn mower using the blade of the present invention. The lawn mower 10 shown in this example is a self-propelled lawn mower equipped with an engine 11 capable of turning the blade 20 and driving the two rear wheels 12 . The engine 11 is installed on the base assembly 13, and the blade 20 is fixed on the output shaft 14 of the engine 11, and the torque is transmitted to the output shaft 14 by the engine 11 to rotate the blade 20, so as to complete the mowing operation and cut the grass Grass clippings are discharged into the grass collector 15.

[0021] Two front wheels 16 are installed on the base assembly 13, and two front wheels 16 and two rear wheels 12 are installed on the base assembly 13 of the lawn mower 10 to adjust the adjustment height of the lawn mower 10 by the he...

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PUM

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Abstract

A blade of a rotary mower comprises a mounting part, a cutting edge and an airlift part. The mounting part is positioned on the center part of the blade and radially extends outwards in an opposite direction to form two end parts; one edge of each end part is provided with the cutting edge, and the other opposite edge and an outer end side of the end part bend upwards along a first fold line to form the airlift part; the cutting edges and the airlift parts on the two end parts are distributed in the same rotation direction; the head end of the airlift part is positioned on the first fold line, and the tail end of the airlift part bends outwards along a second fold line; the bending part forms a gas flow source; and the inner end of the first fold line is superposed with the inner end of the second fold line. The flat gas flow source on the rear edge is turned to reduce load on the rear part of the airlift part, reduce vortex so as to reduce noise generated by the rotating blade, and the blade has the advantages of simple structure and low cost.

Description

technical field [0001] The invention relates to a blade for mowing grass, in particular to a blade for a rotary lawn mower. It uses the rotation of the output shaft to complete the mowing operation and discharge the clippings to the rear of the mower. Background technique [0002] Presently, blades for rotary lawn mowers include a mounting portion fixed to the output shaft of the engine and extending outwardly in opposite directions to form two end portions, each end portion having one edge for rotation. The front edge, the opposite side is the rotating rear edge, the rotating front edge and the rotating rear edge on the two end parts are distributed in the same direction of rotation, the blade is arranged on the rotating front edge, and the blade is used to rotate through it leading edge mowing; said turning trailing edge curves upward to form an angled air lift section provided with a turning trailing edge extending rearwardly and upwardly at an angle to create the airflo...

Claims

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Application Information

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IPC IPC(8): A01D34/63A01D34/71A01D34/73
Inventor 陶发亮
Owner 力帆科技(集团)股份有限公司
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