JP5924621B2 - A new mower with a function that does not rebound greatly even if the cutting edge comes in contact with a hard foreign object during mowing. - Google Patents

Description

In the present invention, when the cutting blade comes into contact with a foreign object that is harder than the stem of the grass to be trimmed, the mowing machine is Since there were many situations that bounced in large numbers, a new balance blade in addition to the cutting blade was incorporated into the brush cutter, and the balance due to the rotation of the blade tip of the brush cutter was eased by rotating it counterclockwise. Therefore, even if the cutting blade comes in contact with a hard foreign object like a conventional brush cutter, the cutter tip cutter can prevent the situation where the blade tip rebounds greatly due to the reaction of the rotation change. A mower with built-in bounce prevention function.

Currently, during the cutting of the grass with the brush cutter, when the cutting blade comes in contact with a foreign object that is harder than the stem of the grass, etc. There has been a demand for a brush cutter that does not bounce even when the blade contacts a hard foreign object.

Until now, when working with a brush cutter, when the blade tip touched a foreign object that was harder than the stem, the brush cutter bounced back largely due to the reaction caused by the rotation change. In addition to the traditionally used cutting blades, the second balance blade that rotates in reverse is installed and rotated, so that the cutting edge is removed during the cutting operation. Even if it comes in contact with a hard foreign object, the balance blade rotates in the reverse direction to maintain the balance between the two, so it is thought that the situation where the brush cutter bounces back like before can be prevented. It is a thing.

Means to solve the problem

As before, even if the cutting blade comes into contact with a foreign object that is harder than the stem using a brush cutter, the blade tip of the brush cutter does not bounce back, but in addition to the cutting blade, it rotates counterclockwise. By rotating the balance blade of the second sheet, even if the cutting blade comes in contact with a hard foreign object that is balanced by both rotations, the tip of the brush cutter can be prevented from bouncing back greatly. A mower with a bounce prevention function device that incorporates a second counter blade that rotates in reverse.

Effect of the invention

When working with a brush cutter, a new counterbalance blade is incorporated in the blade tip of the brush cutter, and the counterclockwise rotation of the cutter blade of the brush cutter is rotated counterclockwise. Therefore, even if the cutting blade comes into contact with a hard foreign object during the mowing operation, the cutting edge of the mowing machine can be prevented from bouncing back greatly, and the people near the mowing machine It can be provided as a service that prevents you from getting involved in an accident.

  Overall structure of gearbox and cutting blade   Upper stage in the gear. Lower gear elevation and plane composite diagram   Detailed sectional view of the combination of the cutting blade shaft and the balance blade shaft

BEST MODE FOR CARRYING OUT THE INVENTION

The embodiment of the present invention has been described above.
When the brush cutter is used, the gear 1 of the gear box is rotated by the drive shaft with the power of the brush cutter, the power is transmitted to the gear 2, and the gear 2 transmits the power of the gear 1 to the shaft for the cutting blade and the angle. The cutting blade was rotated and rotated with the rotary shaft for the cutting blade of the gear 2, and the gear 3 was newly meshed with the gear 2 for rotation conversion (the tops of the cones of the gear 2 and the gear 3 coincide with one point) The gear 4 is meshed with the lower gear 3-1 of the gear 3 for rotation conversion (the conical vertex of the gear 3 and the gear 3-1 is on the line), and the gear 3-1 is meshed with the gear 4 for rotation conversion (with the gear 3-1 The top of the cone of the gear 4 coincides with one point) and the rotation shaft of the gear 4 is assembled so as to be parallel to the rotation shaft for the cutting blade of the gear 2, the gear 5 is incorporated at the lower portion of the shaft, and the gear 6 is meshed and rotationally converted. Engage gear 7 with gear 6 The balance blade rotates counterclockwise from the cutting blade by meshing and rotating the gear 7 with the balance blade cylindrical rotation shaft of the gear 8, and both the cutting blade and the balance blade are emitted. By counteracting the rotational reaction force, it is possible to prevent a situation in which the blade tip of the brush cutter greatly rebounds even if the cutting blade comes into contact with a hard foreign object. It is possible to adjust the rotation of the balance blade by adjusting the number of teeth of the gear 7).

1. Drive shaft 2. Gear 1
3. Gear 2
4). Gear 3
5. Gear 3-1
6). Gear 4
7). Gear 5
8). Gear 6
9. Gear 7
10. Balance blade cylindrical shaft gear 8
11. 11. Shaft and shaft for gear 2 cutting blade Gear 4.5 shaft 13. 13. Separating pipe for cutting blade shaft and balance blade shaft. Balance blade cylindrical shaft and bolt 15. Main pipe and gear case 16. Bearing 17. Balance blade bracket 18. Balance blade 19. Balance blade holder metal 20. Balance blade presser nut 1. Cutting blade bracket 22. Cutting blade 23. Cutting blade presser bracket 24. Cutting blade presser nut

Claims (1)

When mowing with a mower, the cutting blade comes into contact with a foreign object that is harder than the stem during the mowing operation, and the cutting edge of the mower is largely rebounded due to the reaction caused by the instantaneous rotation change of the mowing blade. In order to prevent people from getting involved in accidents, a new balance blade is installed in the upper part so that it rotates in reverse to the cutting blade in parallel with the cutting blade of the brush cutter. A cylindrical separation pipe is provided between the shaft and the balance blade cylindrical shaft surrounding the cutting blade shaft, and a clearance and a bearing for arranging the bearings on the cutting blade shaft side and the balance blade cylindrical shaft side, respectively. by but rotating the cutting blade and balance blades both formed, by offsetting the rotational reaction force that individual blades have occurred with respect to the rotation, as a new form of device for preventing rebounding of the cutting edge of the bush-cutting machine The structure of the gearbox In addition to the cutting blade drive shaft and gears, the gears of the cylindrical shaft for the balance blade are rotated so that the balance blade rotates in the reverse direction of the cutting blade while meshing several gears and rotating the rotation direction individually. Engage with the balance and rotate the cylindrical rotating shaft around the drive shaft of the cutting blade so that the cutting blade can be attached to the top of the cutting blade with a mounting bracket or holding bracket fixed with a nut. Since the rotating blade rotates counterclockwise and counteracts both rotational reaction forces, even if the cutting blade comes in contact with a hard foreign object, etc. .

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