JP2017000037A - Agricultural machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agricultural machine capable of reducing a burden on an operator.SOLUTION: An agricultural machine 11 includes a machine body 12 connected to a tractor. The machine body 12 is provided with a tilling body for performing tilling work, and the upper part of the tilling body is covered with a tilling cover body 25. The rear end part of the tilling cover body 25 is provided with a ground-leveling body 31 for performing ground-leveling work at the rear of the tilling body. The agricultural machine 11 includes an elastic plate 33 for preventing soil from adhering to the tilling cover body 25, the undersurface of the elastic plate 33 being supported by the undersurface support body 36. The position of the undersurface support body 36 can be adjusted with respect to the elastic plate 33.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an agricultural machine used in connection with a traveling vehicle.

  Conventionally, for example, an upper portion of a tillage body is covered with a tillage cover body (shield cover), and soil adhesion prevention for preventing soil cultivated by the tillage body from adhering to the tillage cover body on the lower side of the tillage cover body. An agricultural machine that stretches an elastic plate for use is known (Patent Document 1 below).

  Moreover, as a farm work machine provided with such an elastic board for soil adhesion prevention, there exists a thing of the structure shown to Fig.11 (a) and (b), for example.

  The agricultural machine shown in FIGS. 11 (a) and 11 (b) includes a cultivation cover body 1 that covers an upper portion of a cultivation body (not shown), and soil adhesion prevention that prevents adhesion of soil to the cultivation cover body 1. Elastic plate (rubber plate) 2 and a lower surface support (rubber plate receiving member) 3 for supporting the lower surface of the elastic plate 2 at a fixed position.

  The tillage cover body 1 includes a tillage cover main body portion 4 that covers an upper portion of the tillage body, and side plate portions 5 that are fixed to both ends in the left-right direction of the tillage cover main body portion 4.

  And the length direction of the horizontal direction of the elastic board 2 is larger than the length direction of the horizontal direction of the cultivation cover main-body part 4 of the cultivation cover body 1 so that the elastic board 2 can be attached to the cultivation cover body 1 easily. Is slightly shorter, and there is a longitudinal gap 6 between the side plate portion 5 of the tillage cover body 1 and the elastic plate 2.

JP-A-11-9002

  Therefore, in the agricultural machine shown in FIG. 11, the soil (cultivated soil) cultivated by the cultivator enters the gap 6 between the lower surface of the cultivation cover main body 4 and the upper surface of the elastic plate 2, and as a result. For example, there is a problem that the cleaning work by the operator becomes complicated and the burden on the operator is large. In recent years, there is a strong demand for reducing the burden on workers.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can reduce a worker's burden.

  The agricultural machine according to claim 1 is a machine body connected to a traveling vehicle, a cultivating body that is provided on the machine body and performs a tilling work, a leveling body that performs a leveling work behind the cultivated body, and A cultivation cover body that covers the upper portion, an elastic plate that prevents adhesion of soil to the cultivation cover body, and a lower surface support body that supports the lower surface of the elastic plate, the lower surface support body with respect to the elastic plate The position can be adjusted.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the tillage cover body has a side plate portion, and the lower surface support body is positioned between the side plate portion and the elastic plate by adjusting the position with respect to the elastic plate. It is possible to set a state in which the gap between them is closed.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1 or 2, wherein the lower surface support has a long mounting hole in the left-right direction.

  The agricultural machine according to claim 4 is a machine body connected to a traveling vehicle, a cultivating body provided in the machine body for performing a tilling work, a leveling body for performing a leveling work behind the cultivated body, and An elastic plate that covers the upper part and a lower surface support that supports the lower surface of the elastic plate are provided, and the position of the lower surface support can be adjusted with respect to the elastic plate.

  The agricultural machine according to claim 5 is the agricultural machine according to claim 4, wherein the machine body has a side plate portion, and the lower surface support is positioned between the side plate portion and the elastic plate by adjusting the position with respect to the elastic plate. A closed state in which the gap is closed and an open state in which the gap is opened can be selectively set.

  The farm machine according to claim 6 is the farm machine according to claim 4 or 5, wherein the lower surface support has a long mounting hole in the left-right direction.

  According to the present invention, since the position of the lower surface support can be adjusted with respect to the elastic plate, the burden on the operator can be reduced.

It is a top view of the agricultural working machine which concerns on the 1st Embodiment of this invention. It is a side view of an agricultural working machine same as the above. It is a partial side view of an agricultural working machine same as the above. It is a partial top view of an agricultural working machine same as the above. It is a fragmentary sectional view of an agricultural working machine same as the above. It is a top view of the agricultural machine based on the 2nd Embodiment of this invention. It is a side view of an agricultural working machine same as the above. It is a partial side view of an agricultural working machine same as the above. It is a figure which shows the closed state of the lower surface support body of an agricultural working machine same as the above, (a) is a partial top view, (b) is a fragmentary sectional view. It is a figure which shows the open state of the lower surface support body of an agricultural working machine same as the above, (a) is a partial top view, (b) is a fragmentary sectional view. It is a figure which shows the conventional agricultural machine, (a) is a partial top view, (b) is a fragmentary sectional view.

  A first embodiment of the present invention will be described with reference to FIGS.

  In the figure, 11 is an agricultural machine, and this agricultural machine 11 is connected to the rear part of a tractor (not shown) which is a traveling vehicle, for example, and the traveling direction of the agricultural field (paddy field, field, etc.) by the forward traveling of the tractor. This is a tow-type rotary working machine that moves forward and performs farming work (cultivation leveling work, etc.).

  The farm work machine 11 includes a machine body 12 detachably connected to a three-point link part at the rear part of a tractor (not shown).

  The airframe 12 has a three-point connecting portion 13 detachably connected to a three-point link portion of the tractor on the front side. The airframe 12 has a mission case 15 having a front and rear input shaft 14 projecting forward, at the center in the left-right direction. The input shaft 14 is connected to the PTO shaft of the tractor via a joint, and rotates when the PTO shaft rotates to input power from the tractor side to the farm work machine 11 side.

  The left and right side portions of the mission case 15 are respectively attached to the inner ends of the frame pipe 16 that is elongated in the left-right direction. An upper portion of a box-shaped chain case (cultivated body support portion) 17 is attached to the left end portion which is the outer end portion of the left side frame pipe 16 on one side. An upper portion of a plate-like bracket (cultivating body support portion) 18 is attached to the right end portion which is the outer end portion of the right side frame pipe 16 which is the other side.

  Between the lower part of the chain case 17 and the lower part of the bracket 18, a cultivating body (rotary) 21 is laid so as to perform a cultivating operation while rotating in a predetermined rotational direction by power from the input shaft 14 side. That is, the machine body 12 is rotatably provided with a cultivating body 21 for performing a cultivating work.

  The tillage body 21 has a right and left tillage shaft 22 rotatably supported by the chain case 17 and the bracket 18, and a plurality of tillage claws 23 for performing tillage work are detachably attached to the tillage shaft 22. ing.

  Further, the upper portion of the tillage body 21 is covered with a plate-like, for example, metal tillage cover body 25 that is longitudinal in the left-right direction. This tillage cover body 25 has a thin and thin plate shape in the left and right direction and a rectangular shape in plan view, and a longitudinal and longitudinal shape fixed to both ends of the tillage cover body part 26 in the left and right direction. Side plate portion (cultivation cover body side plate portion) 27.

  The left and right side plate portions 27 of the tillage cover body 25 are attached to the tiller body support portions (the chain case 17 and the bracket 18) of the airframe 12. That is, the left side plate portion 27 is attached to the inside of the chain case 17, and the right side plate portion 27 is attached to the inside of the bracket 18. Thus, the tilling cover body 25 is attached to the body 12.

  In addition, a plate-shaped leveling body 31 (leveling plate) 31 that performs leveling work behind the tillage body 21 is provided at the rear end of the tillage cover body 25 so as to be pivotable in the vertical direction about the horizontal axis 30. It has been. And the extension rake 32 is provided in the both ends of the horizontal direction of the leveling body 31 so that folding is possible.

  Further, the farm work machine 11 includes an elastically deformable rubber elastic plate 33 that is attached to the cultivation cover main body portion 26 of the cultivation cover body 25 and prevents soil adhesion to the lower surface of the cultivation cover main body portion 26. Yes. In other words, the agricultural machine 11 includes the elastic plate 33 for preventing soil adhesion that prevents the soil (cultivated soil) cultivated by the cultivating body 21 from adhering to the lower surface of the cultivation cover main body portion 26. The plate 33 is attached along the lower surface of the tilling cover main body 26.

  The elastic plate 33 is made of, for example, only one rubber plate, and has a plate shape elongated in the left-right direction and a rectangular shape in plan view (see FIG. 1). In order to allow the elastic plate 33 to be easily attached to the tilling cover body 25, the horizontal length of the elastic plate 33 is slightly shorter than the horizontal length of the tilling cover main body 26. In addition, a longitudinal gap 35 is present between the inner side surface of the side plate portion 27 of the tillage cover body 25 and the side end surface of the elastic plate 33. That is, a gap 35 is formed between the left side plate portion 27 and the left end surface of the elastic plate 33, and a gap 35 is formed between the right side plate portion 27 and the right end surface of the elastic plate 33.

  Further, the farm work machine 11 is provided with a pair of left and right pair of plate-like left and right, for example, a metal lower surface support (rubber plate receiving member) 36 that supports the lower surface of the elastic plate 33 from the lower side in the left-right direction. I have.

  Each of the lower surface supports 36 is composed of only one metal plate, for example, and is detachably attached to the elastic plate 33 by a fixture 37. In other words, the lower surface support 36 is attached to the tillage cover main body portion 26 via the elastic plate 33 by the attachment 37, and the lower end support 36 and the tillage cover main body portion 26 have the left and right end portions of the elastic plate 33 in the left-right direction. It is pinched. Note that the fixture 37 is constituted by, for example, a bolt 38, a nut 39, and a washer 40.

  Further, at both ends in the front-rear direction of the lower surface support 36, left and right longitudinal attachment slots (bolt holes) 41 into which the shaft portions 38a of the bolts 38 of the fixture 37 can be inserted are formed. The width of the attachment long hole 41 is slightly larger than the outer diameter of the shaft portion 38a of the bolt 38. The length of the attachment long hole 41 is a dimension that allows the side end surface of the lower surface support 36 to abut on the side plate portion 27.

  The elastic plate 33 is formed with a circular hole 42 into which the shaft portion 38a of the bolt 38 can be inserted, and the hole 42 communicates with the attachment long hole 41. Similarly, a circular hole 43 into which the shaft portion 38 a of the bolt 38 can be inserted is formed in the tilling cover main body portion 26, and the hole 43 communicates with the hole 42 of the elastic plate 33.

  The position of the lower surface support 36 can be adjusted in the left-right direction (side) by the length of the attachment long hole 41 with respect to the elastic plate 33 for preventing soil adhesion. Therefore, the lower surface support 36 can be set to close the gap 35 between the inner side surface of the side plate portion 27 and the side end surface of the elastic plate 33 by adjusting the lateral position with respect to the elastic plate 33.

  That is, for example, as shown in FIG. 5, by sliding the lower surface support 36 outward with respect to the elastic plate 33 along the lower surface of the elastic plate 33, the side end surface of the lower surface support 36 contacts the side plate portion 27. When brought into contact, the lower surface support 36 closes the lower surface opening of the gap 35. That is, the gap 35 between the side plate portion 27 and the elastic plate 33 is closed by the closed lower surface support 36.

  The length dimension of the lower surface support 36 in the front-rear direction is slightly shorter than the length dimension of the elastic plate 33 in the front-rear direction, but it may be the same (including substantially the same) as the length dimension of the elastic plate 33 in the front-rear direction. Good. Further, a plurality of locations in the middle portion in the left-right direction of the elastic plate 33 are attached to the tilling cover main body portion 26 of the tilling cover body 25 by the attachment tool 45.

  Next, the operation and the like of the agricultural machine 11 according to the first embodiment will be described.

  When the farm work machine 11 is connected to the rear part of the tractor and is moved forward by the traveling of the tractor, the tiller 21 performs the tilling work while rotating, and the leveling body 31 performs the leveling work behind it.

  At this time, since the gap 35 is closed by the lower surface support 36, the soil (cultivated soil) cultivated by the tillage body 21 does not enter the gap 35 and is elastic with the lower surface of the tillage cover main body 26. It does not enter between the upper surface of the plate 33.

  And according to such a farm work machine 11, since the lower surface support 36 can be adjusted in position with respect to the elastic plate 33 for preventing soil adhesion (for example, slidable with respect to the lower surface of the elastic plate 33), The lower surface support 36 can be set to a state in which the gap 35 is closed by adjusting the position with respect to the elastic plate 33.

  Therefore, the soil cultivated by the cultivating body 21 does not enter between the lower surface of the cultivating cover main body 26 and the upper surface of the elastic plate 33, and the cleaning work by the operator is facilitated and the burden on the operator can be reduced. .

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  Similarly to the first embodiment, the agricultural machine 11 according to the second embodiment is connected to the rear part of a tractor (not shown), which is a traveling vehicle, for example. It is a tow-type rotary work machine that performs farming work (cultivation leveling work, etc.) while moving forward in the direction of travel.

  The farm work machine 11 includes a machine body 52 that is detachably connected to a three-point link portion at the rear of a tractor (not shown).

  The airframe 52 has a three-point connecting portion 53 detachably connected to the three-point link portion of the tractor on the front side. The airframe 52 has a mission case 55 in which a front-rear input shaft 54 projects forward, at the center in the left-right direction. The input shaft 54 is connected to the PTO shaft of the tractor via a joint, and rotates when the PTO shaft rotates to input power from the tractor side to the agricultural machine 11 side.

  The left and right side portions of the mission case 55 are respectively attached with inner end portions of a frame pipe 56 that is elongated in the left-right direction. An upper portion of a box-shaped chain case (cultivating body support portion) 57 is attached to the left end portion which is the outer end portion of the left side frame pipe 56 on one side. An upper portion of a plate-like bracket (cultivating body support portion) 58 is attached to the right end portion which is the outer end portion of the right side frame pipe 56 which is the other side.

  Between the lower part of the chain case 57 and the lower part of the bracket 58, a cultivating body (rotary) 61 is laid so as to perform the cultivating work while rotating in a predetermined rotational direction by power from the input shaft 54 side. That is, the body 52 is rotatably provided with a cultivating body 61 that performs a cultivating operation.

  The tillage body 61 has a left and right tillage shaft 62 rotatably supported by a chain case 57 and a bracket 58, and a plurality of tillage claws 63 for plowing work are detachably attached to the tillage shaft 62. ing.

  Further, the upper portion of the cultivating body 61 is covered with an elastically deformable plate 65 made of, for example, rubber that is formed in a plate shape with a longitudinal shape in the left-right direction. In other words, the farm work machine 11 includes the tiller body cover elastic plate 65 attached to the machine body 52 and covering the upper portion of the tiller body 61 instead of the metal tillage cover body 25.

  The elastic plate 65 is composed of, for example, only one rubber plate, and has a plate shape elongated in the left-right direction and a rectangular shape in plan view (see FIG. 6). The length of the elastic plate 65 in the left-right direction is slightly shorter than the distance between the chain case 57 and the bracket 58 (the length in the left-right direction of the front frame 71 and the rear frame 72). Between the inner side surface of the left and right side plate portions (airframe side plate portion) 67 and the side end surface of the elastic plate 65, there is a longitudinal gap 70 in the front-rear direction.

  Here, the vertical side plate portion 67 on the left side of the machine body 52 is configured by a case plate portion 57 a of the chain case 57. A vertical side plate portion 67 on the right side of the machine body 52 is configured by a bracket 58. Then, a gap 70 for soil removal is formed between the left side plate portion 67 and the left end surface of the elastic plate 65, and a soil removal space is provided between the right side plate portion 67 and the right end surface of the elastic plate 65. A gap 70 is formed.

  The machine body 52 has a front frame 71 that is longitudinal in the left-right direction and a rear frame 72 that is longitudinal in the left-right direction. The front frame 71 is attached to the front portion of the frame attachment plate 73 via the front frame attachment plate 74, and the rear frame 72 is attached to the rear portion of the frame attachment plate 73 via the rear frame attachment plate 75.

  The rear frame 72 of the machine body 52 is provided with a plate-shaped leveling body (level plate) 81 that performs leveling work behind the cultivating body 61 so as to be pivotable in the vertical direction about a horizontal axis 80. Yes.

  Further, the agricultural machine 11 is provided with, for example, a metal lower surface support (rubber plate receiving member) 86 that forms a pair of left and right longitudinal plate-like plates that support the lower surface of the left and right ends of the elastic plate 65 from below. I have.

  As with the lower surface support 36, each lower surface support 86 is made of only one metal plate, for example, and is detachably attached to the body 52 by a fixture 87.

  That is, the front end portion of the lower surface support 86 is attached to the rod-like attachment portion 71a of the front frame 71 by the attachment tool 87. A rear end portion of the lower surface support 86 is attached to a rod-like attachment portion 72a of the rear frame 72 by an attachment 87. The elastic plate 65 is supported at a plurality of locations from below by a pair of left and right lower surface supports 86 and a separate lower surface support plate 85 so as to be in a desired state.

  Note that the fixture 87 is configured by, for example, a bolt 88, a washer 89, and a washer 92 that can be screwed into the screw holes of the attachment portions 71a and 72a. The elastic plate 65 is formed with a circular hole 90 into which the attachment portions 71a and 72a can be inserted.

  Further, at both ends in the front-rear direction of the lower surface support 86, left and right longitudinal attachment slots (bolt holes) 91 into which the shafts 88a of the bolts 88 of the fixture 87 can be inserted are formed. The width dimension of the attachment long hole 91 is slightly larger than the outer diameter dimension of the shaft portion 88a of the bolt 88. The length dimension of the attachment long hole 91 is a dimension capable of bringing the side end face of the lower surface support 86 into contact with the side plate portion 67.

  The position of the lower surface support 86 can be adjusted in the left-right direction (side) by the length of the attachment long hole 91 with respect to the elastic plate 65 for the tilling body cover. For this reason, the lower surface support 86 closes the gap 70 between the inner side surface of the side plate portion 67 and the side end surface of the elastic plate 65 and adjusts the gap 70 by adjusting the lateral position with respect to the elastic plate 65. It can be selectively set (switchable) to the open state to be opened. That is, the lower surface opening of the gap 70 can be opened and closed by sliding the lower surface support 86 with respect to the elastic plate 65.

  That is, for example, as shown in FIGS. 9A and 9B, the lower surface support 86 is slid outward along the lower surface of the elastic plate 65 with respect to the elastic plate 65, thereby When the end surface is brought into contact with the side plate 67, the lower surface support 86 is switched from the open state to the closed state, and the lower surface support 86 in the closed state closes the lower surface opening of the gap 70.

  On the other hand, as shown in FIGS. 10A and 10B, the lower surface support 86 is slid inward along the lower surface of the elastic plate 65 with respect to the elastic plate 65, so that the lower surface support 86 side. When the end surface is separated from the side plate portion 67, the lower surface support 86 is switched from the closed state to the open state, and as a result, the lower surface opening of the gap 70 is opened and the gap 70 is opened up and down.

  The length dimension in the front-rear direction of the lower surface support 86 is slightly shorter than the length dimension in the front-rear direction of the elastic plate 65, but may be the same (including substantially the same) as the length dimension in the front-rear direction of the elastic plate 65. Good.

  Next, the operation and the like of the agricultural machine 11 according to the second embodiment will be described.

  When the farm work machine 11 is connected to the rear part of the tractor and moved forward by the traveling of the tractor, the tiller 61 performs the tilling work while rotating, and the leveling body 81 performs the leveling work behind it.

  At this time, depending on the soil quality of the field, for example, the soil cultivated by the cultivator 21 (cultivated soil) may overflow from the gap 70 upward and adhere to the upper surface of the elastic plate 65.

  In such a case, the operator switches the lower surface support 86 from the open state to the closed state, and closes the lower surface opening of the gap 70 by the lower surface support 86. Thus, the operator can set the lower surface support 86 to an open state or a closed state according to the soil quality of the field, that is, can open and close the gap 70.

  And according to such a farming machine 11, since the lower surface support body 86 is position-adjustable with respect to the elastic plate 65 for a cultivation body cover (for example, it can slide with respect to the lower surface of the elastic plate 65), The lower surface support 86 can be selectively set to a closed state in which the gap 70 is closed and an open state in which the gap 70 is opened by adjusting the position with respect to the elastic plate 65.

  Therefore, since the gap 70 can be opened and closed according to the soil quality of the field, the cleaning work by the operator is facilitated, and the burden on the operator can be reduced.

  In any of the above-described embodiments, the agricultural working machine 11 has been described with respect to the configuration in which the lower surface supports 36 and 86 are provided on both the left and right sides. For example, the configuration in which the lower surface supports 36 and 86 are provided only on either the left or right side. But you can.

  Further, the lower surface supports 36 and 86 are not limited to those composed of only one metal plate, and may be composed of, for example, a plurality of metal plates divided forward and backward.

11 Agricultural machines
12, 52 aircraft
21, 61 Tillage
25 Tillage cover body
27, 67 Side plate
31, 81 leveling body
33, 65 Elastic plate
35, 70 Clearance
36, 86 Bottom support
41, 91 slot for mounting

Claims (6)

A fuselage connected to the traveling vehicle;
A plowing body that is provided on this machine and performs plowing work;
A leveling body that performs leveling work behind this tilled body,
A cultivation cover body covering an upper portion of the cultivation body;
An elastic plate for preventing soil adhesion to the tillage cover body;
A lower surface support that supports the lower surface of the elastic plate,
The farm work machine, wherein the lower surface support is positionally adjustable with respect to the elastic plate. The tillage cover body has a side plate portion,
The agricultural work machine according to claim 1, wherein the lower surface support body can be set to a state in which a gap between the side plate portion and the elastic plate is closed by position adjustment with respect to the elastic plate. The agricultural work machine according to claim 1 or 2, wherein the lower surface support has a mounting hole that is longitudinal in the left-right direction. A fuselage connected to the traveling vehicle;
A plowing body that is provided on this machine and performs plowing work;
A leveling body that performs leveling work behind this tilled body,
An elastic plate covering the upper part of the tillage body;
A lower surface support that supports the lower surface of the elastic plate,
The farm work machine, wherein the lower surface support is positionally adjustable with respect to the elastic plate. The fuselage has a side plate,
The lower surface support body can be selectively set to a closed state in which a gap between the side plate portion and the elastic plate is closed and an open state in which the gap is opened by position adjustment with respect to the elastic plate. The agricultural machine according to claim 4. The agricultural work machine according to claim 4 or 5, wherein the lower surface support has a mounting hole that is longitudinal in the left-right direction.

Images