JP4956360B2 - Flairmore - Google Patents

Description

  The present invention relates to a flare mower capable of performing not only normal mowing work but also accurate foliage treatment work while preventing generation of vibration.

Conventionally, for example, a machine body connected to the rear part of a traveling vehicle such as a tractor, a horizontal rotating shaft body rotatably provided on the machine body and having a plurality of claw attachment parts, and attached to a claw attachment part of the rotation shaft body A flare mower, which is a mowing work machine provided with a plurality of cutting claws having the same rotation diameter, is known (for example, see Patent Document 1).
JP 2002-125432 A

  However, when the above-mentioned conventional flare mower is used to perform a foliage processing operation such as potato before harvesting, for example, potatoes are present, so that the foliage hanging in the valleys between adjacent ridges cannot be processed well. Therefore, it is conceivable to use a plurality of types of cutting claws having different rotation diameters according to the heel. In this case, however, the balance of weight is lost, and vibration may occur when the rotating shaft rotates.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a flare mower capable of performing not only normal mowing work but also accurate foliage treatment work while preventing vibrations.

  The flare mower according to claim 1 is provided with a fuselage, a rotary shaft that is rotatably provided on the fuselage and has a plurality of nail attachments, and a first nail that can be attached to and detached from the nail attachments, Depending on the difference in weight between the second cutting claw, which can be attached to and detached from the claw mounting portion, and whose rotation diameter is smaller than the rotation diameter of the first cutting claw, and the first cutting claw and the second cutting claw A balance weight of a heavy weight, wherein the first cutting claw is attached to a claw attachment portion of the rotary shaft body during a mowing operation, and one nail attachment portion of the rotation shaft body during a foliage treatment operation The first cutting claw is attached to the other claw, and the second claw and the balance weight are attached to the other claw attachment portion of the rotating shaft.

  The flare mower according to claim 2 is the flare mower according to claim 1, wherein each of the nail cover attaching portion, the second nail and the balance weight has an insertion hole, and the insertion hole of the nail attachment portion, A nut is screwed into a bolt inserted into the insertion hole of the second cutting claw and the insertion hole of the balance weight, whereby the second cutting claw and the balance weight are attached to the claw attachment portion. It is.

  According to the first aspect of the present invention, not only the normal mowing operation can be performed in the state where the first cutting claw is attached to the claw attachment portion of the rotary shaft body, but also the one claw attachment portion of the rotation shaft body. With the first cutting claw and the second cutting claw and the balance weight attached to the other claw attachment portion of the rotating shaft body, the foliage treatment can be performed with high accuracy while preventing the generation of vibration.

  According to the second aspect of the present invention, the nut is screwed into the bolt inserted into the insertion hole of the claw mounting portion of the rotating shaft body, the insertion hole of the second cutting claw, and the insertion hole of the balance weight. Accordingly, the second nail and the balance weight can be easily attached to the nail attachment portion.

  An embodiment of the flare mower of the present invention will be described with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes a flare mower which is a mowing machine. The flare mower 1 is in a state of carrying out a normal mowing work (weeds in an orchard, ranch, etc., shredding work of pasture), potatoes before harvesting, and the like It is possible to selectively switch to the state of performing the foliage processing operation. Note that FIG. 1 is a view in which a cutting claw or the like of a rotating work unit to be described later is omitted.

  The flare mower 1 includes a machine body 2 connected to a work machine lifting / lowering support part (three-point hitch part) at the rear of a tractor that is a traveling vehicle (not shown), and a rotating work means 3 that is rotatably provided on the machine body 2. ing.

  The machine body 2 has a three-point connecting portion 5 that is connected to a work implement lifting support portion of the tractor. The three-point connecting portion 5 is connected via a lower pin 9 to a top mast 6 rotatably connected to an upper link of a work implement lifting support portion of the tractor via a top pin 8 and a lower link of the work implement lifting support portion. It consists of left and right lower arms 7 that are movably connected.

  The machine body 2 has a shaft support portion 10, and an input shaft 11 in the front-rear direction is rotatably supported by the shaft support portion 10. The input shaft 11 is connected to the PTO shaft of the tractor via a joint and a transmission shaft. The input shaft 11 is connected to power transmission means 12 for transmitting the power from the input shaft 11 to the rotating work means 3 side. The power transmission means 12 includes a transmission shaft 13, upper and lower pulleys 14 and 15, an endless transmission belt 16 that is stretched around both pulleys 14 and 15, and the like. The pulleys 14 and 15 and the transmission belt 16 are accommodated in a transmission case portion 17 located on one end side of the machine body 2.

  Further, the machine body 2 includes a curved plate-like cover portion 18 that covers the upper portion of the rotating working means 3, and a vertical support plate portion 19 that is spaced apart from the transmission case portion 17 and located on the other end side of the machine body 2. Have.

  On the other hand, for example, in the state shown in FIG. 2 (the nail arrangement for foliage processing having different rotation diameters), the rotation working means 3 performs the foliage processing work such as potato before harvesting, and the state shown in FIG. The normal mowing nail arrangement) has a normal mowing operation.

  Here, the rotary working means 3 in the state shown in FIG. 2 will be described. The rotary working means 3 includes a lower part of the transmission case 17 and a lower part of the support plate part 19 as shown in FIGS. It has a horizontal rotating shaft 21 that is provided in a rotatable manner and rotates in a predetermined direction, for example, an up-cut direction, about the rotation center axis X in the horizontal direction by the power from the power transmission means 12.

  On the cylindrical outer peripheral surface of the rotating shaft 21, a plurality of claw attachment portions 22 are provided so as to draw a spiral. In other words, for example, the claw mounting portions 22 are radially provided on the outer peripheral surface of the rotating shaft 21 so as to be located in a spiral shape and at intervals of 90 degrees when viewed from the axial direction. Each claw mount 22 is configured by a pair of opposing plates 23 that are spaced apart from each other in the axial direction. Each counter plate 23 is formed with a circular insertion hole 24 penetrating in the plate thickness direction.

  A first cutting claw (large cutting claw) 26 is detachably attached to one of the plurality of nail attachment portions 22 of the rotary shaft body 21, and is attached to a plurality of other nail attachment portions 22 of the rotation shaft body 21. A second cutting claw (small cutting claw) 27 and a balance weight 28 for preventing vibration are detachably attached. That is, for example, the claw attachment portion 22 located above the heel a includes a second cutting claw 27 having a rotation diameter B smaller than the rotation diameter A of the first cutting claw 26 and lighter than the first cutting claw 26, and the second cutting claw. A balance weight 28 corresponding to the claw 27 is attached, and a first cutting claw 26 is attached to the other claw cover attaching portion 22.

  Each of the cutting claws (frail claws) 26 and 27 has, for example, two plate blade members 31 and 32 having a cross-sectionally H-shape, and each of the plate blade members 31 and 32 has an elongated hole 33 for insertion. , 34 are formed penetrating in the thickness direction.

  The rotation diameter A of the first cutting claw 26 is the distance between the rotation center axis X and the tip of the first cutting claw 26 when the rotary shaft 21 rotates, and the rotation diameter B of the second cutting claw 27 is This is the distance between the rotation center axis X and the tip of the second nail 27 when the rotary shaft 21 rotates. In this embodiment, the second claw 27 is composed of two plate blade members 32, and the first claw 26 is connected to the two plate blade members 31 and the plate blade member 31. It is composed of a connecting member 51 such as a shackle.

  The balance weight 28 that is provided corresponding to each second cutting claw 27 for each second cutting claw 27 and can be attached to and detached from the claw mounting portion 22 includes a first cutting claw 26, a second cutting claw 27, and the like. It has a weight corresponding to the difference in weight. That is, the sum of the weights of the second claw 27 and the balance weight 28 is substantially the same as the weight of the first claw 26 (the two plate blade members 31 and the connecting member 51). Each balance weight 28 is composed of, for example, two ring-shaped weight members 41, and each weight member 41 is formed with a circular insertion hole 42 therethrough.

  A nut 47 is screwed into a bolt 45 inserted into the insertion hole 24 of the claw mounting portion 22 of the rotating shaft body 21, the insertion hole 34 of the second cutting claw 27, and the insertion hole 42 of the balance weight 28. Thus, the second cutting claw 27 and the balance weight 28 are detachably attached to the claw attachment portion 22 via bolts 45 and nuts 46.

  The bolt 45 includes a shaft portion 45a and a head portion 45b. The shaft portion 45a of the bolt 45 includes two weights positioned between the insertion holes 24 of the opposing plates 23 of the claw mounting portion 22 and the opposing plates 23. The insertion hole 42 of the member 41 and the insertion hole 34 of the two plate blade members 32 positioned between the opposing plates 23 are inserted, and a nut 46 is screwed to the distal end side of the inserted shaft portion 45a. ing. Thus, the second cutting claw 27 and the balance weight 28 are attached to the claw cover attaching portion 22 of the rotary shaft body 21 via the bolt 45 and the nut 46, and the second cutting claw 27 is attached to the shaft portion 45 a of the bolt 45. It is freely rotatable around the shaft 45a.

  Therefore, as shown in FIG. 4, the second claw 27 is in a state along the radial direction of the rotating shaft 21 based on the centrifugal force when the rotating shaft 21 rotates. When the rotating shaft 21 is stopped, the second cutting claw 27 is in a state where it hangs down and pivots downward about the shaft portion 45a with respect to the shaft portion 45a of the bolt 45 by its own weight. FIG. 3 shows a state when the rotary shaft 21 is stopped, but the cutting claws 26 and 27 above the rotary shaft 21 are described as a state during rotation.

  The balance weight 28 also functions as a spacer that fills the space between the second cutting claw 27 and the claw attachment portion 22 of the rotary shaft 21.

  Further, the nut 46 is screwed into the bolt 45 inserted through the insertion hole 24 of the claw mounting portion 22 of the rotating shaft 21 and the insertion hole 52 of the substantially U-shaped connecting member 51, whereby the first cutting The claw 26 is detachably attached to the claw attachment portion 22 via a bolt 45 and a nut 46.

  That is, the shaft portion 45a of the bolt 45 is positioned between the opposing plates 23 by inserting the insertion hole 24 of the opposing plates 23 of the claw attachment portion 22 and the insertion hole 33 of the plate blade member 31 through the intermediate portion. The connecting member 51 is inserted into the insertion hole 52, and a nut 46 is screwed to the distal end side of the inserted shaft portion 45a. Thus, the first cutting claw 26 is attached to the claw mounting portion 22 of the rotary shaft 21 via the bolt 45 and the nut 46, and the first cutting claw 26 has the shaft portion 45a attached to the shaft portion 45a of the bolt 45. It is pivotable as a center. For this reason, as shown in FIG. 4, the first claw 26 is also in a state along the radial direction of the rotary shaft 21 based on the centrifugal force when the rotary shaft 21 rotates, like the second claw 27. Become. When the rotating shaft 21 is stopped, the first cutting claw 26 is in a state where the first cutting claw 26 is rotated downward about the shaft portion 45a of the bolt 45 by its own weight and hangs down.

  Next, the operation and the like of the flare mower 1 will be described.

  For example, when performing a foliage processing operation such as a potato grown on cocoon a, as shown in FIG. 2, two kinds of cuttings having different rotation diameters are made in accordance with the shape of cocoon a, that is, corresponding to the unevenness of the field scene. The claws 26 and 27 are attached to the claw attachment portion 22 of the rotary shaft 21. That is, the smaller second claw 27 and the balance weight 28 are attached to the claw attachment portion 22 located above the heel a, and the larger first claw 26 is attached to the other claw attachment portion 22. Install.

  In this state, when the rotary shaft 21 of the rotary working means 3 is rotated at high speed by the power output from the tractor while the flare mower 1 is moved by traveling of the tractor, the first claw 26, the second claw 27 and the balance The weight 28 rotates about the rotation center axis X together with the rotary shaft 21, and stalks and leaves such as potatoes are shredded by the first and second cutting claws 26 and 27.

  At this time, the foliage hanging from the valley between the adjacent ridges a is shredded by the first nail 26. Moreover, the balance of the weight of the rotation working means 3 is good, no unbalance of rotation does not occur, and no vibration that impedes the work is generated.

  Further, after that, for example, when weeding weeds grown on the ground such as an orchard, the second cutting claw 27 and the balance weight 28 are removed from the claw attachment portion 22 of the rotating shaft 21 as shown in FIG. Instead, the first cutting claw 26 is attached to the claw attachment portion 22 so that all the claw attachment portions 22 are equipped with one type of cutting claw 26 having the same rotation diameter.

  In this state, when the rotary shaft 21 of the rotary working means 3 is rotated at high speed by the power output from the tractor while the flare mower 1 is moved by traveling of the tractor, the first claw 26 rotates together with the rotary shaft 21. Rotating about the central axis X, weeds and the like are shredded by the first claw 26. At this time, the weight balance of the rotating working means 3 is good, and vibrations that hinder work are not generated.

  As described above, according to the flare mower 1, not only a normal mowing operation can be performed with the first cutting claw 26 attached to the claw cover attaching portion 22 of the rotary shaft body 21, but also one nail cover of the rotary shaft body 21. With the first cutting claw 26 attached to the mounting portion 22 and the second cutting claw 27 and the balance weight 28 attached to the other claw mounting portion 22 of the rotating shaft 21, the occurrence of vibrations that hinder work is prevented. On the other hand, the foliage treatment can be performed with high accuracy.

  Further, when the cutting claws 26 and 27 are replaced in the foliage processing work, the insertion hole 24 of the claw mounting portion 22 of the rotary shaft 21, the insertion hole 34 of the second cutting claw 27, and the balance weight The bolt 45 is inserted into the insertion hole 42 of the 28, and the nut 46 is screwed into the inserted bolt 45, so that the second cutting claw 27 and the balance weight 28 can be attached to the claw attachment portion 22 very easily. be able to.

  In the above embodiment, the case where the first cutting claw 26 is constituted by the two plate blade members 31 and the connecting member 51 has been described. However, as shown in FIG. 6, for example, a connecting member such as a shackle The first cutting claw 26 may be composed of two plate blade members 31 without using 51, and the weight member 41 of the balance weight 28 is not located inside the opposing plates 23 of the claw mounting portion 22. It may be positioned outside the counter plate 23. The balance weight 28 shown in FIG. 6 is lighter by the weight of the connecting member 51 than that shown in FIG.

  In the above embodiment, two types of cutting claws 26 and 27 having different rotation diameters have been described. However, three or more types of cutting claws 26 and 27 may be used. For example, as shown in FIGS. A configuration using the claws 26, 27, 27a may be used. The rotation diameter C of the third cutting claw 27a is smaller than the rotation diameter A of the first cutting claw 26 and larger than the rotation diameter B of the second cutting claw 27, and the weight of the third cutting claw 27a is the first cutting claw. Lighter than 26 but heavier than 2nd nail 27. And the balance weight 28a provided corresponding to the 3rd nail | claw 27a has a weight according to the difference in the weight of the 1st nail | claw 26 and the 3rd nail | claw 27a.

  Further, the balance weight 28 is not limited to the one made up of the two weight members 41, and may be made up of one weight member or three or more weight members, and is not attached to the bolt 45. The thing etc. which attach to the 2 nail | claw 27 detachably may be used.

It is a front view of the flermore which concerns on one embodiment of this invention. It is a front view at the time of the foliage processing work of the rotation working means of a flail moor same as the above. It is a front view of a rotation operation means same as the above. It is a side view of a rotation operation means same as the above. It is a front view at the time of mowing work of the rotation working means same as the above. It is a principal part front view of the flare mower which concerns on other embodiment of this invention. It is a front view of the rotation operation | work means of other embodiment of this invention. It is a side view of a rotation operation means same as the above.

Explanation of symbols

1 Flairmore 2 Airframe
21 Rotating shaft
22 Claw mounting part
24, 34, 42 insertion hole
26 First cut nail
27 2nd claws
28 Balance weight

Claims (2)

The aircraft,
A rotating shaft body that is rotatably provided on the machine body and has a plurality of nail attachment portions,
A first cutting claw detachable from the claw attachment portion;
A second cutting claw that is attachable to and detachable from the claw mounting portion, and whose rotation diameter is smaller than the rotation diameter of the first cutting claw;
A balance weight having a weight corresponding to a difference in weight between the first nail and the second nail;
During the mowing operation, the first cutting claw is attached to the claw attachment portion of the rotating shaft,
During the foliage processing operation, the first nail attachment portion is attached to one nail attachment portion of the rotating shaft body, and the second nail attachment and balance weight are attached to the other nail attachment portion of the rotation shaft body. Flairmore characterized by being able to. Each of the nail attachment portion, the second nail and the balance weight has an insertion hole,
A nut is screwed into a bolt inserted into the insertion hole of the claw mounting portion, the insertion hole of the second cutting claw, and the insertion hole of the balance weight, thereby the second cutting claw and the balance. The flail mower according to claim 1, wherein a weight is attached to the claw attachment portion.

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