JP4011004B2 - Moore - Google Patents

Description

  The present invention relates to a mower in which a cutting blade is provided inside a cutting blade housing so that the cutting blade can be driven to rotate about a rotation axis center in the vertical direction of the machine body.

  In the mower, for example, as shown in Patent Document 1, a blade 12 (corresponding to a cutting blade) is provided with a wind-up blade 12B, and the inside of the cutting-blade housing 13 is formed by the wind-up blade 12 that rotates together with the blade 12. It is configured so that the conveying wind is generated and the cut grass and the cut grass are easily carried out from the cutting blade housing 13.

JP 2001-45826 (columns [0031] and [0032], FIG. 4-7)

  If the grass or turf is wet or moist, the mowing grass or turf tends to adhere to the inner surface of the blade housing, but the conventional mower does not have a special cleaning function. The blade of the cutting blade is far away from the top plate of the cutting blade housing, or it is difficult to generate strong wind toward the top plate of the cutting blade housing, especially on the top plate of the cutting blade housing. It was difficult to remove the attached grass and grass.

An object of the present invention is easy to remove even adheres grass and grass clippings in the top plate of the brush rehearsal housing, moreover, it is to provide a mower obtained easily structure.

  According to the first aspect of the present invention, in the mower in which the cutting blade is provided in the inside of the cutting blade housing so as to be rotatable and driven around the vertical axis of the machine body, the top plate and the vertical wall portion are provided. It constitutes a cutting blade housing, and is formed integrally with the cutting blade in a rearward tilted position that is located rearward in the rotational direction with respect to the cutting blade cutting edge portion of the cutting blade and rearward in the rotational direction. A wind wing is provided, and the wind wing is set to a radial width narrower than the edge portion of the cutting blade and positioned at the tip of the radial direction, and the edge portion of the cutting blade is cut. The upper portion of the wind wing is formed by curving the wing portion that is located near the lower edge of the blade housing and is curved in an arc shape that gradually rises toward the rear side in the rotational direction of the cutting blade. Close to the top plate of the cutting blade housing, Ri the distance between the top plate of the blade housing cutting and raising wind wing blades, are to a small than the distance between the vertical wall portion of the blade housing cutting and raising wind blades of the cutting blade.

That is, cutting the distance between the top plate of the blade housing cutting and raising wind wing blade, cutting because those are the smaller than the distance between the vertical wall portion of the blade housing cutting and raising wind wing blade, the cutting blade caused The wind blades rotate and move near the top plate of the cutting blade housing so that the wind generated by the wind blades of the cutting blade can easily hit the top plate of the cutting blade housing, and the cutting blade housing The wing blade of the cutting blade can be driven while making the wing blade of the cutting blade easy to remove the cut grass and the cut grass attached to the top plate.

Therefore, according to the first aspect of the present invention, even if mowing grass or mowing lawn adheres to the top plate of the mowing blade housing, it becomes easy to be removed by the wind or removal action by the wind blades of the mowing blade. Even when the turf tends to adhere to the top plate of the cutting blade housing, the cutting operation can be performed efficiently. In addition, by using the wing blade of the cutting blade as a cleaning means, the structure can be obtained easily and inexpensively.

According to the second aspect of the present invention, in the configuration of the first aspect of the present invention, the height of the wind-up blade protruding upward from the cutting blade from the cutting blade is the same over the entire width of the wind-up blade .

That is, cutting height projecting from the cutting blade of Okoshifutsubasa fuselage upper facing blade cutting because those are the same over the entire width of the Okoshifutsubasa blade, the blade upper end of Okoshifutsubasa the cutting blade is cutting the housing Compared to the conventional mower that is inclined with respect to the top plate, the wind generated by the wind blades of the cutting blade is more likely to strike the top plate of the cutting blade housing. Also, the wind generated by Okoshifutsubasa the cutting blade is less likely exit outside the Okoshifutsubasa the cutting blade.

Therefore, according to the second aspect of the present invention, even if mowing grass or mowing lawn adheres to the top plate of the cutting blade housing, it is easily removed by the wind from the wind blades of the cutting blade . Also, efficiently generate a carrier air, it becomes easily out with wet or humid by going on mowing grass and cutting heavy grass, such as during rainy weather, and and easier heavy attached to the top plate of the blade housing grass and grass clippings Even in this case, cutting can be done efficiently. In addition, by using the wing blade of the cutting blade as a cleaning means, the structure can be obtained easily and inexpensively.

In the third invention, in the configuration of the present second invention, there is set to a position parallel to the edge of the cutting blade in a direction viewed along the Okoshifutsubasa the cutting blade in rotation axis of the bush rehearsal .

That is, cutting because those are set parallel orientation to the edge of the cutting blade in a direction viewed along the rotational axis of the cutting blade to Okoshifutsubasa blade, the conventional has been inclined relative to the edge of the cutting blade compared to Okoshifutsubasa the cutting blade, is difficult exit behind the Okoshifutsubasa winds cutting blade caused by Okoshifutsubasa the cutting blade, easily hit strongly to the top plate of the cutting blade housing from the surface .

Therefore, according to the third aspect of the invention, the cut grass and cut grass attached to the top plate of the cutting blade housing are more easily removed by the wind from the wind blades of the cutting blade, and the grass and grass are removed from the top of the cutting blade housing. Even when it easily adheres to the plate, it can be cut efficiently.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a driving part equipped with a pair of left and right steering operations and a front wheel 1 that can be driven, a pair of left and right driving rear wheels 2, and an engine 3 that drives the front and rear wheels 1 and 2. The mower 20 is connected via the link mechanism 5 between the front and rear wheels of the self-propelled aircraft equipped with the driver seat 4 and the like located at the rear of the section, and the driving force of the engine 3 is transmitted to the mower 20 by the transmission shaft 7. It is configured to transmit, and is provided with a transport duct 8 extending from the cutting blade housing 21 of the mower 20 to the rear of the self-propelled machine body and passing between the left and right rear wheels 2, 2, and the rear part of the self-propelled machine body Is provided with a grass collecting container 9 to constitute a riding type mower.

This riding-type mowing machine performs mowing and lawn mowing work. The working clutch 10 is provided in the rear wheel drive case, and the working clutch 10 is turned on and off by swinging the clutch lever 11 provided in the driving section. Thus, the work clutch 10 turns on and off the transmission from the engine 3 to the mower 20 to drive and stop the mower 20. By swinging the link mechanism 5 up and down with respect to the self-propelled machine body, the mower 20 is in a descending working state in which the gauge wheels 22 positioned in front of and behind the cutting blade housing 21 are grounded, and the gauge wheels 22 are on the ground. The mower 20 cuts the grass and turf when the mower 20 is moved to the descent work state and the self-propelled vehicle is driven in the driving state. Mowed grass and mowed grass are supplied to the collecting container 9 by the transport duct 8 and stored.

As shown in FIGS. 2 and 3, the mower 20 is arranged inside the cutting blade housing 21 so as to be aligned in the lateral direction of the self-propelled machine body and configured to rotate about the axis X in the vertical direction of the machine body. a plurality of blades shaped cutting blade 23, the front vacuum suction plate 24, the rear vacuum plate 25 disposed on the rear side of the cutting blade 23 is provided which is disposed in front side of the cutting blade 23, the upper surface of the bush rehearsal housing 21 Further, a cutting blade drive mechanism 26 is provided to transmit the driving force from the transmission shaft 7 to the rotation support shaft of each cutting blade 23 using a transmission belt.

As shown in FIGS. 3 and 4, in each of the cutting blades 23, the cutting blades 23 are arranged on the rear side in the cutting blade rotating direction from the edges 23 a at both ends where the edges 23 a for cutting the grass and turf of the cutting blade 23 are located. Is provided with a wind-up blade 27 formed by bending a part of the material constituting the blade so as to rise upward from the cutting blade 23 upward. Each of the wind wings 27 is set in a state as shown in FIGS.
In other words, the cutting blade 23 is set so as to be parallel to the edge 23a when viewed in the direction along the rotational axis X of the cutting blade 23. Okoshifutsubasa 27 and the distance D1 between the top plate 21a of the bush rehabilitation housing 21, is set to be smaller than the distance D2 between the the Okoshifutsubasa 27 front vacuum suction plate 24 and the rear vacuum plate 25 . The height H of protruding from the cutting blade 23 of Okoshifutsubasa 27 to the fuselage upwards direction is, is set to be the same over the entire width in the direction along the or falling edge of di 23a of Okoshifutsubasa 27.

  As shown in FIGS. 2, 3, and 4, ventilation cutout portions 28 are provided at two positions on the left and right of the front vertical wall 21 b of the cutting blade housing 21, and the front vacuum plate 24 of the top plate 21 a of the cutting blade housing 21 is provided. A plurality of through holes 29 for ventilation arranged in the lateral direction of the airframe are provided in a portion located on the front side.

As a result, the mower 20 causes each cutting blade 23 to rotate with its driving force transmitted from the engine 3 to the cutting blade drive mechanism 26 via the work clutch 10 and the transmission shaft 7. The blades are driven to rotate around the cutting blade housing 21 and cut along the edges 23a of the cutting blades 23 that rotate the grass and turf that have entered the interior of the cutting blade housing 21 from the front of the cutting blade housing 21. At this time, by introducing the grass and turf into the inside through the left and right cutouts 28 of the cutting blade housing 21, the grass and turf are not pushed down by the front vertical wall 21a of the cutting blade housing 21 while being generated inside. Introduce.
The wind blades 27 are driven to rotate by the cutting blades 23, and the air outside the cutting blade housing 21 is sucked into the vacuum plates 24 and 25 inside the cutting blade housing 21 from between the cutting blade housing 21 and the ground. Further, air outside the cutting blade housing 21 is sucked from the cutout portion 28 and the through hole 29 of the cutting blade housing 21, and the conveying air is sufficiently generated inside the cutting blade housing 21. At this time, because of the small distance between Okoshifutsubasa 27 and the top plate 21a, Near Okoshifutsubasa 27 of the top plate 21a rotates moving, relative to the deposited mowing grass or grass to the top plate 21a By being easy to remove, the height H of the wind-up blade 27 protruding from the cutting blade 23 is the same over the entire width of the wind-up blade, and the wind-up blade 27 is in a posture parallel to the edge 23a. transport by generating carrier air impinging strongly to the top plate 21a, and adheres cutting grass and grass clippings in the top plate 21 a to generate a carrier air while it easily removed, the cut grass and grass clippings Te It is carried out to the said conveyance duct 8 from the discharge port 30 of the cutting blade housing 21 with a wind.

Side view of the entire riding mower Moor's top view Moor's bottom view (A) is a longitudinal side view of Mohr, (B) is a cross-sectional view of the cutting blade at the wind-foil arrangement portion

Explanation of symbols

21 Cutting blade housing
21a Top plate of cutting blade housing 23 Cutting blade
23a Cutting blade edge 24, 25 Vertical wall portion 27 of cutting blade housing Winding blade D1 Spacing between the cutting blade and the top plate of the cutting blade housing D2 Vertical wall of the cutting blade and the cutting blade housing Interval with the part H Height pivoting from the cutting blade of the wind blade of the cutting blade

Claims (3)

A mower in which a cutting blade is provided inside a cutting blade housing so that the cutting blade can be driven to rotate about a rotation axis center in the vertical direction of the machine body,
The cutting blade housing is configured with a top plate and a vertical wall,
Provided on the rear side in the rotational direction from the cutting blade cutting edge portion of the cutting blade, a wind wing integrally formed with the cutting blade in a backward tilted position located on the rear side in the rotational direction, And while setting this wind-up blade to the radial direction width narrower than the edge part of the cutting blade and positioning it at the tip end part in the radial direction,
The edge portion of the cutting blade is positioned near the lower edge of the cutting blade housing, and the wind blade portion following the edge portion is curved and formed in an arcuate shape that is gradually positioned higher toward the rear side in the rotation direction of the cutting blade. Then, by bringing the upper end side of the wind blade closer to the top plate of the cutting blade housing, the interval between the wind blade of the cutting blade and the top plate of the cutting blade housing is set so that the wind blade of the cutting blade and the cutting blade housing A mower that is smaller than the distance from the vertical wall.   The mower according to claim 1, wherein the height of the wind wing projecting upward from the cutting blade is the same over the entire width of the wind wing.   The mower according to claim 2, wherein the wing blade of the cutting blade is set in a posture parallel to the edge of the cutting blade as viewed in a direction along the rotational axis of the cutting blade.

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