JP2018082632A - Agricultural machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agricultural machine that can facilitate replacement of a stainless-steel plate.SOLUTION: An agricultural machine 1 includes a tilling body 8 for performing tillage and a leveling body 23 for performing the leveling work behind the tilling body 8. The leveling body 23 has a leveling main body 24, a rubber plate 25, a stainless-steel plate 26 and fixing means 29. The rubber plate 25 covers the surface of the tilling body 8 side of the leveling main body 24. The stainless-steel plate 26 can be attached and detached to/from the leveling main body 24 and covers the surface of the tilling body 8 side of the leveling main body 24. The fixing means 29 fixes the stainless-steel plate 26 to the leveling main body 24. At least a portion of the fixing means 29 is exposed from the rubber plate 25.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an agricultural machine that performs tillage leveling work.

  DESCRIPTION OF RELATED ART Conventionally, the agricultural working machine described in the following patent document 1, for example is known.

  This conventional farm work machine includes, for example, a tiller that performs tillage work and a leveling body that performs leveling work behind the tiller. Further, the leveling body includes a leveling body main body, an elastic body that covers a surface of the leveling body on the side of the cultivating body, and a soil adhesion preventing body that covers a surface of the ground leveling body on the side of the cultivating body. The soil adhesion preventing bodies are attached to the leveling body by individual support means and fixing means, respectively.

  Further, the upper end side of the soil adhesion preventing body is covered by the lower end side of the elastic body, and fixing means for fixing the soil adhesion preventing body to the leveling body is disposed on the upper end side of the soil adhesion preventing body covered by the elastic body. ing. That is, the fixing means for fixing the soil adhesion preventing body to the leveling body is covered with the elastic body.

JP 2012-187027 A

  However, the soil adhesion preventive body may be replaced due to wear or damage, but the fixing means for fixing the soil adhesion preventive body to the leveling body body is in a position covered with an elastic body. In some cases, it is difficult to operate the fixing means, and the soil adhesion prevention body cannot be easily replaced.

  An object of this invention is to provide the agricultural machine which can replace | exchange the soil adhesion prevention body easily.

  The agricultural working machine according to claim 1 includes a cultivating body that performs a plowing work and a leveling body that performs a leveling work behind the cultivating body, and the leveling body includes a leveling body main body and the plowing of the leveling body main body. An elastic body that covers the body-side surface, a soil adhesion preventing body that is detachable from the leveling body main body, covers the surface of the leveling body side of the tillage body, and a fixing that fixes the soil adhesion prevention body to the leveling body body And at least a part of the fixing means is exposed from the elastic body.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the elastic body and the soil adhesion preventing body overlap each other.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 2, wherein the soil adhesion preventing body has a support portion for supporting the elastic body.

  The farm work machine according to claim 4 is the farm work machine according to claim 2, wherein the leveling body includes a plurality of support means for supporting a plurality of positions in the left-right direction of the elastic body on the leveling body main body. The edge of the soil adhesion preventing body that overlaps with the body has a plurality of facing edges opposed to the support means, and a protruding edge arranged between the support means adjacent to each other in the left-right direction, The projecting edge is projected from the opposing edge.

  The agricultural machine according to claim 5 is the agricultural machine according to claim 1, wherein the elastic body and the soil adhesion preventing body do not overlap.

  According to the present invention, the soil adhesion preventing body can be easily replaced.

It is a side view of the agricultural working machine which concerns on the 1st Embodiment of this invention. It is a side view fragmentary sectional view of an agricultural working machine same as the above. It is a front view of the leveling body of an agricultural working machine same as the above. It is sectional drawing of the side view (FIG. 3A-A view) of a leveling body same as the above. It is an agricultural working machine which concerns on the 2nd Embodiment of this invention, Comprising: It is sectional drawing of the side view (corresponding to FIG. 3A-A view) of a leveling body. It is an agricultural working machine which concerns on the 3rd Embodiment of this invention, Comprising: It is sectional drawing of the side view (corresponding to FIG. 3A-A view) of a leveling body. It is an agricultural working machine which concerns on the 4th Embodiment of this invention, Comprising: It is sectional drawing of the side view (corresponding to FIG. 3A-A view) of a leveling body. It is an agricultural working machine which concerns on the 5th Embodiment of this invention, Comprising: It is sectional drawing of the side view (corresponding to FIG. 3A-A view) of a leveling body. It is a front view of the leveling body of the agricultural working machine which concerns on the 6th Embodiment of this invention.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  In FIG. 1, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to a rear portion of a tractor (not shown), which is a traveling vehicle, for example, and is cultivated while moving the field forward (traveling direction) by traveling of the tractor. It is intended for leveling work.

  The farm work machine 1 includes a machine body 2 that is detachably connected to a three-point link (a farm work machine lifting support device) at the rear of a tractor (not shown).

  The airframe 2 has a mission case portion 4 with a front and rear input shaft 3 projecting forward, at the center in the left-right direction. The input shaft 3 is connected to the PTO shaft of the tractor via a power transmission means such as a joint, and rotates when the PTO shaft rotates to input power from the tractor side to the agricultural machine 1 side.

  On the left and right side portions of the mission case portion 4, inner end portions of a frame pipe portion 5, which is a main frame portion having a cylindrical shape with a longitudinal shape in the left-right direction, are attached. The upper end of the chain case portion 6 as a transmission case portion is attached to the left end portion which is the outer end portion of the left side (traveling direction left side) frame pipe portion 5, and the outer end of the right side (traveling direction right side) frame pipe portion 5 An upper portion of a plate-like bracket portion (not shown) is attached to the right end portion which is a portion. A side cover plate 7 is attached to the rear portion of the chain case portion 6 and the bracket portion.

  Between the lower part of the chain case part 6 and the lower part of the bracket part, which are spaced apart from each other on the left and right sides, a cultivating body (rotary) 8 for performing a cultivating operation while rotating in a predetermined direction, for example, a down cut direction, is rotatable. It is erected. That is, the body 2 is rotatably provided with a cultivating body 8 that performs a cultivating operation.

  The tillage body 8 has a tillage shaft 9 in the left-right direction that rotates in a predetermined direction by power from the input shaft 3 side, and a plurality of tillage claws 10 attached to the tillage shaft 9. The tillage body 8 is not limited to the one that rotates in the downcut direction and performs the tillage work, and may be the one that rotates in the upcut direction and perform the tillage work.

  Further, a top mast 12 projects obliquely upward from the upper part of the mission case portion 4 of the airframe 2 and is connected to the three-point link side of the tractor. Further, as shown in FIGS. 1 and 2, a hitch frame 13, which is a left and right longitudinal front frame connected to the three-point link side of the tractor, is provided at the front portion of the airframe 2. The hitch frame 13 includes a hitch pipe 13a having a longitudinal shape in the left-right direction, a pair of left and right hitch links 13b protruding forward from the hitch pipe 13a, and a hitch pipe mounting plate 13c fixed to the hitch pipe 13a. A hitch pipe mounting plate 13 c of the hitch frame 13 is connected and fixed to the front portion of the mounting plate 14 fixed to the frame pipe portion 5. A rear frame 16 that is longitudinal in the left-right direction is connected and fixed to the rear portion of the mounting plate 14. Mounting portions 13d and 16a having screw holes are fixed to the hitch pipe 13a and the rear frame 16, respectively.

  Further, the body 2 is provided with a rubber cover 18 having a rectangular plate shape in plan view and covering the top of the tillage body 8 and capable of elastic deformation. A plurality of positions in the left-right direction of the rubber cover 18 are supported by a plurality of rubber receiving plates 19 attached to the machine body 2. These rubber receiving plates 19 are made of a metal plate member elongated in the front-rear direction, and are formed in a convex curve shape upward. The front end side of the rubber receiving plate 19 is fixed by a rubber receiving plate fixing means 20 including a bolt or the like screwed to the mounting portion 13d of the hitch pipe 13a, and the rear end side of the rubber receiving plate 19 is fixed to the rear frame 16. It is fixed by a rubber receiving plate fixing means 21 including a bolt or the like that is screwed to the mounting portion 16a. The rubber cover 18 supported on the plurality of rubber receiving plates 19 is convexly curved upward.

  As shown in FIGS. 1 to 4, a leveling body (level plate) 23 that performs leveling work behind the tillage body 8 is disposed at the rear of the machine body 2. The leveling body 23 includes a leveling body main body 24, a rubber plate 25 that is an elastically deformable elastic body for preventing soil adhesion and covers an upper side of the surface (front surface) of the leveling body 8 on the side of the tillage body 8, A plurality of support means for releasably supporting the upper and lower sides of the stainless steel plate 26 and the rubber plate 25 that cover the lower side of the surface (front surface) of the tillage body 8 of 24 on the leveling body main body 24 27 and 28, and a plurality of fixing means 29 for releasably fixing the stainless steel plate 26 to the leveling body main body 24.

  In other words, the leveling body 23 is detachable so that the low-adhesive plate-like members (rubber plate 25 and stainless steel plate 26) to which soil is less likely to adhere as compared to the leveling body main body 24 cover the entire front surface of the leveling body main body 24 ( It is attached to (replaceable). For this reason, it is comprised so that cultivated soil may not contact the surface by the side of the cultivating body 8 of the leveling body main body 24 directly.

  The leveling body main body 24 is made of metal and is formed in a single plate shape that is long in the left-right direction, and has side plates 30 on both left and right side portions thereof. The leveling body main body 24 is provided at the rear portion of the machine body 2, that is, the rear frame 16 so as to be rotatable in the vertical direction around the rotation center axis (rotation fulcrum) X in the left-right direction. That is, the upper end portion of the leveling body main body 24 is rotatably attached to the rear frame 16 by a hinge 31 that is a plurality of (for example, three) connecting members.

  The rubber plate 25 is formed in a single plate shape that is longitudinal in the left-right direction. A gap 32 having a predetermined size is formed between the upper side of the rubber plate 25 (above the middle in the vertical direction) and the front surface of the leveling body 24 to facilitate elastic deformation of the rubber plate 25. ing. In other words, the upper side of the rubber plate 25 is supported on the leveling body main body 24 by the upper support means 27 so that the elastic deformation gap 32 is formed between the rubber plate 25 and the front surface of the leveling body main body 24. On the other hand, the lower side of the rubber plate 25 (below the middle in the vertical direction) is in a state of being in direct contact with the front surface of the leveling body main body 24 in a planar shape, by the lower support means 28, and the leveling body main body 24 It is supported by. Note that the lower side of the rubber plate 25 may also be supported by the leveling body main body 24 by the lower support means 28 so that a gap 32 is formed between the rubber plate 25 and the front surface of the leveling body main body 24.

  The rubber plate 25 has a plurality of holes 35 and 36 attached to the support means 27 and 28 respectively on the upper side of the rubber plate 25 and on the lower end side 34 near the lower end on the lower side. The plurality of holes 35 and 36 are formed at predetermined intervals in the left-right direction of the rubber plate 25, respectively.

  The stainless steel plate 26 has a plurality of holes 39 attached to the fixing means 29 on the upper end side 38 of the stainless steel plate 26. These holes 39 are formed at predetermined intervals in the left-right direction of the stainless steel plate 26. Further, these holes 39 are positions shifted in the left-right direction with respect to the lower holes 36 of the rubber plate 25, and are intermediate between the lower holes 36 of the rubber plates 25 adjacent to each other in the left-right direction. It is formed corresponding to the position. The upper end side 38 of the stainless steel plate 26 is attached to the leveling body main body 24 by the fixing means 29 so as to be in a state of directly contacting the front surface of the leveling body main body 24 in a planar shape. Further, a curved plate portion 40 having a C-shaped cross section bent upward in a semicircular arc shape is formed on the lower end side of the stainless steel plate 26, and this curved plate portion 40 can be attached to and detached from the lower end portion of the leveling body main body 24. It is mated.

  The upper support means 27 is inserted through the hole 35 on the upper side of the rubber plate 25, and supports the upper side of the rubber plate 25 so as to be releasable with respect to the leveling body 24. Further, the upper support means 27 has a collar member (gap maintaining member) or the like interposed between the upper side of the rubber plate 25 and the front surface of the leveling body main body 24, so that the upper side of the rubber plate 25 and the leveling body main body The top surface of the rubber plate 25 is supported by the leveling body 24 so that a gap 32 is formed between the front surface of the ground plate 24 and the front surface of the ground leveling body 24. That is, the upper support means 27 supports the rubber plate 25 with respect to the leveling body 24 so as to allow elastic deformation of the rubber plate 25.

  The lower support means 28 includes a bolt 42, a nut 43, a washer 44, and a pressing member (bolt head receiving member) 45. The bolt 42 is a countersunk bolt, and the nut 43 is a cap nut. Then, the bolt 42 is inserted into the holding member 45 fitted in the lower hole 36 of the rubber plate 25, the hole 46 provided in the leveling body main body 24, and the washer 44, and further inserted. When the nut 43 is screwed to the bolt 42, the lower support means 28 is fixed to the leveling body main body 24, and the rubber plate 25 is fixed to the leveling body main body 24 by the lower support means 28. It is supported so that it can be released. Then, the lower support means 28 allows the lower side of the rubber plate 25 to have both a peripheral area of each of the lower support means 28 and an area between the lower support means 28 adjacent to each other in the left-right direction. It is supported so as to be in close contact with the front surface of the main body 24. The bottom end of the rubber plate 25 is in close contact with the front surface of the stainless steel plate 26.

  The fixing means 29 includes a bolt 48, a nut 49, and a washer 50. The bolt 48 has a thin head, and a hexagon socket head cap screw having a hexagon socket for turning the bolt 48 by fitting a hexagon stick wrench to the end face of the head is used. As the nut 49, a cap nut is used. Then, the bolt 48 is inserted into the hole 39 of the stainless steel plate 26, the hole 51 provided in the leveling body 24 and the washer 50, and the nut 49 is screwed into the inserted bolt 48, so that The upper end side 38 of the plate 26 is fastened and fixed to the leveling body 24 so as to be releasable. The upper side (including the upper end side 38) of the stainless steel plate 26 is in close contact with the front surface of the leveling body main body 24 both in the peripheral area of each fixing means 29 and in the area between the fixing means 29 adjacent to each other in the left-right direction. ing.

  At least a part of the fixing means 29 is exposed from the rubber plate 25. In the present embodiment, the fixing means 29 is disposed below the rubber plate 25 and at a position exposed to the front of the stainless steel plate 26. That is, the fixing means 29 is not covered with the rubber plate 25. The front side of the bolt 48 is completely exposed. Therefore, even if the rubber plate 25 is disposed on the leveling body 24, the bolt 48 of the fixing means 29 can be directly operated.

  Further, the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless steel plate 26 overlap each other. That is, the stainless plate 26 is disposed on the front surface of the leveling body 24, and the lower end side 34 of the rubber plate 25 overlaps the front surface of the upper end side 38 of the stainless plate 26. The lower end side 34 of the rubber plate 25 is elastically deformed forward by the thickness of the stainless steel plate 26 and is in close contact with the front surface of the stainless steel plate 26.

  The upper end side of the rubber plate 25 is disposed above the rear end side of the rubber cover 18, and the rear end side of the rubber cover 18 is in contact with the front surface of the rubber plate 25 on the side of the tiller 8. Yes.

  Also, a back plate 53 is erected on the rear surface of the leveling body main body 24, and a ground pressure adjusting means 54 for adjusting the ground pressure of the leveling body 23 is provided between the back plate 53 and the machine body 2. Yes.

  Next, the operation and the like of the farm work machine 1 will be described.

  When the agricultural machine 1 is connected to the rear part of the tractor and the tractor travels forward, the agricultural machine 1 moves forward together with the tractor, and the cultivator 8 performs the cultivating work. 23 performs leveling work.

  The leveling body 23 is attached with a low adhesion plate-like member (rubber plate 25 and stainless steel plate 26) that is less likely to adhere to soil than the leveling body 24 so as to cover the entire front surface of the leveling body 24. Therefore, the cultivated soil is not in direct contact.

  Here, for example, when it is necessary to replace the stainless steel plate 26 due to wear or damage of the stainless steel plate 26, the operator releases the fixation by the fixing means 29 and removes the old stainless steel plate 26. Remove from the leveling body 24. Thereafter, the operator attaches a new stainless steel plate 26 to the leveling body main body 24 and fixes the new stainless steel plate 26 to the leveling body main body 24 by the fixing means 29.

  When replacing the stainless steel plate 26, the fixing means 29 that fixes the stainless steel plate 26 to the leveling body 24 is exposed without being covered with the rubber plate 25. Workability is good.

  Since the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless steel plate 26 overlap each other, the upper end side 38 of the stainless steel plate 26 is connected to the leveling body main body 24 with the fixing means 29 removed from the stainless steel plate 26. And the lower end side 34 of the rubber plate 25 are removed and inserted. When such an operation is performed, the rubber plate 25 may be elastically deformed, or the support means 28 of the rubber plate 25 may be loosened or removed.

  In addition, when it is necessary to replace the rubber plate 25 due to wear or damage of the rubber plate 25, the operator releases the support by the support means 27 and 28, and the old rubber plate 25 is leveled. Remove from the body 24. Thereafter, the operator attaches and supports the new rubber plate 25 to the leveling body 24 using the support means 27 and 28.

  According to the agricultural machine 1 of the first embodiment, since the fixing means 29 is exposed from the rubber plate 25, the fixing means 29 can be directly operated, and the stainless plate 26 can be easily replaced. it can. That is, since the fixing means 29 is disposed below the rubber plate 25 and at a position where the stainless steel plate 26 is exposed, the fixing means 29 is not covered with the rubber plate 25, and the front side of the fixing means 29 is It is completely exposed, its fixing means 29 can be easily operated directly, and the stainless plate 26 can be easily replaced.

  Since the rubber plate 25 and the stainless steel plate 26 overlap each other, that is, the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless steel plate 26 overlap each other, the rubber plate 25 and the stainless steel plate 26 It is possible to prevent soil from entering the back side of the rubber plate 25 from between. Thus, even when the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless steel plate 26 overlap each other, the fixing means 29 is exposed from the rubber plate 25, so that the fixing means 29 can be easily and directly Can be operated.

  Further, the fixing means 29 uses a hexagon socket head bolt as the bolt 48, so that the head of the bolt 48 is thin and the amount of protrusion of the head of the bolt 48 from the stainless steel plate 26 can be reduced. The adhesion of soil to the part can be reduced.

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

  In the fixing means 29 of the agricultural machine 1 according to the second embodiment, a hexagonal bolt having a general hexagonal head is used as the bolt 48 and a hexagon having a general screw hole penetrated as the nut 49. A nut is used.

  In this way, even when a general bolt 48 and nut 49 are used, the head of the bolt 48 is not covered with the rubber plate 25, and a tool such as a socket wrench or a spanner is fitted to the head of the bolt 48. The stainless plate 26 can be easily replaced.

  Next, a third embodiment of the present invention will be described with reference to FIG.

  In the agricultural working machine 1 according to the third embodiment, the rubber plate 25 and the stainless steel plate 26 do not overlap. That is, the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless steel plate 26 do not overlap. Further, the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless steel plate 26 are separated from each other without overlapping.

  When the stainless plate 26 is replaced, for example, when the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless plate 26 overlap with each other, the upper end side 38 of the stainless plate 26 is placed on the leveling body 24 and the rubber. Without the work of inserting and removing between the lower end side 34 of the plate 25 and the work of loosening or removing the lower support means 28 supporting the lower end side 34 of the rubber plate 25 to the leveling body main body 24, The stainless plate 26 can be easily replaced.

  Note that the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless steel plate 26 may be in contact with each other without overlapping. In this case, the front surface of the leveling body 24 can be reliably covered with the rubber plate 25 and the stainless steel plate 26, and entry of soil into the back side of the rubber plate 25 and the stainless steel plate 26 can be prevented.

  Next, a fourth embodiment of the present invention will be described with reference to FIG.

  In the agricultural machine 1 according to the fourth embodiment, the stainless steel plate 26 has a support portion 60 that supports the rubber plate 25. That is, a support portion 60 that supports the lower end side 34 of the rubber plate 25 is provided on the upper end side 38 of the stainless steel plate 26.

  The support portion 60 is bent in a substantially L shape on the upper end side 38 of the stainless steel plate 26, abuts against the front surface of the lower end side 34 of the rubber plate 25, and the lower end side 34 of the rubber plate 25 is connected to the leveling body. The rubber plate 25 is pressed against the front surface of the main body 24, that is, fixed to a state where the lower end side 34 of the rubber plate 25 is sandwiched between the front surface of the leveling body main body 24.

  The support portion 60 may be provided in the entire left and right direction of the stainless steel plate 26 or may be provided in a plurality of locations.

  Since the lower end side 34 of the rubber plate 25 can be supported by the support portion 60 of the stainless steel plate 26, the lower support means 28 for supporting the lower end side 34 of the rubber plate 25 to the leveling body main body 24 can be omitted. And the configuration can be simplified.

  Furthermore, since the support portion 60 of the stainless steel plate 26 overlaps the front side of the lower end side 34 of the rubber plate 25, it is possible to prevent soil from entering the back side of the rubber plate 25 from between the rubber plate 25 and the stainless steel plate 26. In addition, when the support portion 60 is provided in the entire left and right direction of the stainless steel plate 26, the lower end side 34 of the rubber plate 25 can be reliably supported and entry of soil into the back side of the rubber plate 25 can be prevented.

  Next, a fifth embodiment of the present invention will be described with reference to FIG.

  In the agricultural machine 1 according to the fifth embodiment, in addition to providing the support portion 60 on the upper end side 38 of the stainless steel plate 26 as in the fourth embodiment, the lower end side 34 of the rubber plate 25 is leveled. Lower support means 28 for supporting the body main body 24 is provided.

  Since the lower end side 34 of the rubber plate 25 is fixed to the leveling body main body 24 by the lower support means 28 and supported by the support portion 60 of the stainless steel plate 26, the lower end side 34 of the rubber plate 25 can be reliably supported. In addition, it is possible to prevent soil from entering the back side of the rubber plate 25 from between the rubber plate 25 and the stainless steel plate 26.

  Next, a sixth embodiment of the present invention will be described with reference to FIG.

  In the agricultural machine 1 according to the sixth embodiment, the lower end side 34 of the rubber plate 25 and the upper end side 38 of the stainless steel plate 26 overlap each other as in the first embodiment. That is, the stainless plate 26 is disposed on the front surface of the leveling body 24, and the lower end side 34 of the rubber plate 25 overlaps the front surface of the upper end side 38 of the stainless plate 26.

  The edge of the upper end side 38 of the stainless steel plate 26 that overlaps the rubber plate 25 has a plurality of opposing edge portions 63 that are opposed to the respective lower support means 28 that supports the rubber plate 25, and a lower side that is adjacent to each other in the left-right direction And a plurality of projecting edge portions 64 disposed between the support means 28, and the projecting edge portions 64 protrude above the opposing edge portion 63. For this reason, the overlapping dimension in the vertical direction between the rubber plate 25 and the stainless steel plate 26 is larger at the protruding edge portion 64 than at the opposing edge portion 63.

  Incidentally, the lower end side 34 of the rubber plate 25 is supported by the leveling body main body 24 by a plurality of lower support means 28. The space between the lower support means 28 is opened to some extent. In this case, the rubber plate 25 is strongly pressed against the leveling body main body 24 in the vicinity of the lower support means 28, but in the middle part of the lower support means 28 adjacent to each other in the left-right direction, the rubber plate 25 is The force with which the plate 25 is pressed against the leveling body main body 24 side is weakened. For this reason, soil is likely to enter between the rubber plate 25 and the stainless steel plate 26 at an intermediate portion of the lower support means 28 adjacent to each other in the left-right direction.

  Therefore, by providing protruding edges 64 disposed between the lower support means 28 adjacent to each other in the left-right direction at the edge of the upper end side 38 of the stainless steel plate 26, the lower edges adjacent to each other in the left-right direction. Even if soil enters between the rubber plate 25 and the stainless steel plate 26 (projection edge portion 64) between the support means 28 on the side, the vertical movement between the rubber plate 25 and the stainless steel plate 26 (projection edge portion 64) Since the overlapping dimension is large, it is possible to reduce the entry of soil to the back side of the rubber plate 25.

  In any of the above-described embodiments, the support means 27 and 28 and the fixing means 29 may be, for example, pins instead of bolts.

  Furthermore, the elastic body is not limited to rubber such as a rubber plate, and may be made of resin or metal. Similarly, the soil adhesion preventing body is not limited to a metal such as a stainless steel plate, and may be made of rubber or resin.

  In addition, when the rubber plate 25 and the stainless steel plate 26 are overlapped with each other, if the rubber plate 25 is provided with a notch or a hole and the fixing means 29 is exposed, the fixing means 29 is above the lowermost position of the rubber plate 25. May be located.

  Further, it is sufficient that at least a part of the fixing means 29 is exposed from the rubber plate 25. If at least a part of the fixing means 29 is exposed from the rubber plate 25, the fixing means 29 can be operated more easily than when the fixing means 29 is completely covered with the rubber plate 25. For example, even in the case where the rubber plate 25 is supported by the leveling body main body 24 by the lower support means 28 so that a gap 32 is formed between the lower side of the rubber plate 25 and the front surface of the leveling body main body 24, If at least a part of the fixing means 29 is exposed from the rubber plate 25, the fixing means 29 can be easily operated by avoiding the rubber plate 25 or by elastically deforming the rubber plate 25. .

  Although several embodiments of the present invention and modifications thereof have been described, the above-described embodiments and modifications can be appropriately combined without departing from the gist of the present invention.

1 Agricultural machinery 8 Tillage
23 Leveling body
24 Leveling body
25 Rubber plate, an elastic body
26 Stainless steel plate that prevents soil adhesion
28 Support means
29 Fixing means
60 Support
63 Opposite edge
64 Projection

Claims (5)

A plowing body for plowing work,
And a leveling body that performs leveling work behind this tilled body,
The leveling body is:
Leveling body,
An elastic body covering a surface of the ground leveling body main body on the side of the tillage body,
A soil adhesion preventing body that is detachable from the leveling body main body and covers the surface of the leveling body side of the tillage body,
Fixing means for fixing the soil adhesion preventing body to the leveling body body,
At least a part of the fixing means is exposed from the elastic body. The agricultural working machine according to claim 1, wherein the elastic body and the soil adhesion preventing body overlap each other. The agricultural working machine according to claim 2, wherein the soil adhesion preventing body has a support portion that supports the elastic body. The leveling body has a plurality of support means for supporting a plurality of locations in the left-right direction of the elastic body on the leveling body main body,
The edge of the soil adhesion preventing body that overlaps the elastic body has a plurality of facing edges that are opposed to the support means and a protruding edge that is disposed between the support means adjacent to each other in the left-right direction. And this protrusion part protrudes rather than the said opposing edge part. The agricultural working machine of Claim 2 characterized by the above-mentioned. The agricultural working machine according to claim 1, wherein the elastic body and the soil adhesion preventing body do not overlap.

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