JP6441578B2 - Agricultural machine - Google Patents

Description

  The present invention relates to an agricultural machine that can replace only a soil adhesion prevention body.

  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 is, for example, a cultivating body that performs a cultivating work, a cultivating cover body that covers an upper portion of the cultivating body, and a rear end portion of the cultivating cover body that is rotatably attached to the rear of the cultivating body. A leveling body that performs leveling work and a soil adhesion prevention body (stainless steel plate) that is fixed to the leveling body by welding or the like and covers the surface of the leveling body on the side of the tillage body are provided.

Japanese Patent Laid-Open No. 7-23604

  However, in the conventional agricultural machine, since the soil adhesion preventing body is fixed to the leveling body by welding or the like, for example, when the soil adhesion preventing body is damaged and needs to be replaced, only the soil adhesion preventing body is required. Can't be replaced, and the leveling body must be replaced.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can replace | exchange only a soil adhesion prevention body.

The agricultural machine according to claim 1 is attached to the cultivating body that performs the cultivating work, the cover body that covers the cultivating body, the leveling body that performs the leveling work behind the cultivating body, and the detachable body. A soil adhesion preventing body that covers the surface of the leveling body on the side of the tillage body, and a plurality of fixing means for releasably fixing the soil adhesion preventing body to an upper portion of the leveling body, All are covered by the cover body, and the portion of the ground leveling body excluding the upper end side of the surface of the ground leveling body is covered by the soil adhesion preventing body, and the surface leveling body of the leveling body is The upper end portion not covered with the soil adhesion prevention body is covered with the cover body, and the soil adhesion prevention body is connected to the main body plate portion and the lower end portion of the main body plate portion and is bent upward. In front of the soil adhesion prevention body. Curved plate portion are those that are releasably fitted fixed to the lower end portion of the ground leveling member.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the soil adhesion preventing body is made of stainless steel.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1, wherein the soil adhesion preventing body is a stainless steel plate, and the plurality of fixing means are arranged in a line at intervals in the left-right direction above the leveling body. Therefore, the stainless steel plate can be removed from the leveling body simply by removing the plurality of fixing means.

請 Motomeko 4 agricultural machine description is intended in claims 1 to agricultural machine according to one or more described 3, which is a gap between the rear end portion and fixing means of the cover body exists.

  According to the present invention, since the soil adhesion prevention body is detachably attached to the leveling body, only the soil adhesion prevention body can be replaced, and the soil adhesion prevention body can be releasably fixed to the upper part of the leveling body. Since the fixing means to be covered is covered with the cover body, it is possible to prevent soil from adhering to the fixing means.

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 partial top view of an agricultural working machine same as the above. It is a side view of the agricultural working machine which concerns on the 2nd Embodiment of this invention. It is a side view fragmentary sectional 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.

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

  In the figure, 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 the cultivated land is moved forward (traveling direction) by moving this tractor. Work.

  The farm work machine 1 includes a machine body 2 that is detachably connected to a three-point link (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 both the left and right sides 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. An upper portion of a chain case portion 6 as a transmission case portion is attached to a left end portion that is an outer end portion of the left frame pipe portion 5, and a plate-like shape is attached to a right end portion that is an outer end portion of the right frame pipe portion 5. The upper part of a bracket part (not shown) is attached.

  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, a rotary cultivating body 8 that performs the cultivating work while rotating in a predetermined direction is rotatably mounted. That is, the tiller 8 is rotatably provided on the body 2.

  The tillage body 8 includes a tillage shaft 9 that rotates in a predetermined direction by power from the input shaft 3 side, and a plurality of tillage claws 10 that are detachably 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 plate-shaped tillage cover body 11 that covers an upper portion of the tillage body 8 is disposed above the tillage body 8. The tillage cover body 11 has a curved plate shape that is convex upward, for example, and is fixed to the machine body 2. The surface (bottom surface) of the tillage cover body 11 on the side of the tillage body 8 is covered with a stainless steel cover plate 12 that is a stainless steel plate-like soil adhesion prevention body to which soil is less likely to adhere than the tillage cover body 11. Yes. The stainless cover plate 12 is not always necessary, and may be configured without the stainless cover plate 12, for example.

  The rear end portion of the tillage cover body 11 is elastic as an elastically deformable plate-like cover body that covers at least a part of the upper portion of the tillage body 8, that is, for example, the rear end portion of the upper portion of the tillage body 8. A rubber plate 16 as a body is detachably attached by attachment means 17. Note that the attachment means 17 includes, for example, an attachment plate 18, an attachment bolt 19, an attachment nut 20, and the like.

  The rubber plate 16 which is a soil adhesion preventing cover body is, for example, a rectangular plate having a longitudinal direction in the left-right direction, and is configured by a single rubber member (elastic member) to which soil is difficult to adhere. The front end portion 16a of the rubber plate 16 is sandwiched between the rear end portion of the tillage cover body 11 and the mounting plate 18, and is supported by the mounting plate 18 from below. The rear end portion of the stainless cover plate 12 is located between the front end portion 16a of the rubber plate 16 and the mounting plate 18.

  On the other hand, the rear end portion 16b of the rubber plate 16 is not supported by the mounting plate 18, extends obliquely downward from the rear end portion of the tillage cover body 11, and is positioned behind the tillage body 8. ing. The rear end portion of the rubber plate 16 is a free end portion 15.

  In addition, a plate-shaped leveling body (leveling plate) 21 that performs leveling work behind the tillage body 8 is centered about a rotation center axis (rotation fulcrum) X in the left-right direction at the rear end of the tillage cover body 11. It is provided so as to be rotatable in the vertical direction. In other words, the upper end portion of the leveling body 21 is rotatably attached to the rear end portion of the tilling cover body 11 via a hinge 22 that is a plurality of (for example, four) connecting members. A rubber plate 16 is disposed below the hinge 22 so that soil from the tillage body 8 does not adhere to the hinge 22.

  Further, a stainless steel plate 23, which is a stainless steel plate-like soil adhesion preventing body, to which dirt is less likely to adhere as compared with the leveling body 21, is detachably attached to the leveling body 21. That is, the thin stainless steel plate 23 is detachably attached to the surface (front surface) of the leveling body 21 on the side of the tillage body 8 so as to overlap the surface.

  The stainless steel plate 23 covers substantially the entire surface of the leveling body 21 on the side of the tillage body 8 (part excluding the upper end side). In addition, the upper end portion of the ground leveling body 21 on the side of the tilling body 8 that is not covered with the stainless steel plate 23 is covered with the rubber plate 16. For this reason, the soil does not directly contact the surface of the leveling body 21 on the side of the cultivating body 8, and the surface of the leveling body 21 on the side of the cultivating body 8 is not directly damaged. Note that the entire surface of the leveling body 21 on the side of the tillage body 8 may be covered with the stainless steel plate 23.

  Here, the stainless steel plate 23 is, for example, substantially the same size as the leveling body 21, and is constituted by a single rectangular plate-like stainless steel member (soil adhesion preventing member) having a longitudinal direction in the left-right direction.

  Further, as shown in FIG. 2, the stainless steel plate 23 includes a main body plate portion 24 bent in a convex curve toward the front at one intermediate position so as to correspond to the leveling body 21, and the main body plate portion. And a bent plate portion 25 having a C-shaped cross section that is integrally connected to the lower end portion of 24 and bent upward in a semicircular arc shape.

  A plurality of bolt holes (not shown) arranged at intervals in the left-right direction are formed at the upper end of the stainless steel plate 23. Similarly, a plurality of bolt holes (not shown) are also formed on the top of the leveling body 21. Not) is formed.

  The flat upper end of the stainless steel plate 23 is releasably fixed to the upper portion of the leveling body 21 by a fixing bolt 31 that is a fixing means. That is, a plurality of nuts 32 are fixed by welding or the like on the surface (rear surface) opposite to the side of the cultivating body 8 at the top of the leveling body 21, and the fixing bolts 31 are bolt holes ( The upper end of the stainless steel plate 23 is releasably fixed to the upper surface of the leveling body 21 on the side of the tillage body 8 by being screwed through each other.

  The nut 32 is stored in a nut storage portion 33 that is a box-shaped or bag-shaped reinforcing portion formed on the leveling body 21.

  On the other hand, the bent plate portion 25 at the lower end portion of the stainless steel plate 23 is removably fitted and fixed to the lower end portion of the leveling body 21 without using any separate fixing means. Therefore, it is possible to remove the stainless steel plate 23 from the leveling body 21 simply by loosening the fixing bolt 31 and removing it from the nut 32.

  A rear end portion 16b of the rubber plate 16 is located between the tillage body 8 and the fixing bolt 31, and a plurality of rear end portions 16b of the rubber plate 16 are arranged at intervals in the left-right direction. All of the fixing bolts 31 are covered. That is, the fixing bolt 31 is hidden behind the rear end portion 16b of the rubber plate 16 so that soil from the tillage body 8 does not adhere to the fixing bolt 31.

  Further, the free end 15 at the rear end of the rubber plate 16 is located in the vicinity of the front of the fixing bolt 31, and a gap 35 exists between the rear end side portion 16b of the rubber plate 16 and the fixing bolt 31 ( (See FIG. 2). The rear end portion 16b of the rubber plate 16 may be in contact with the head of the fixing bolt 31.

  Further, the free end portion 15 at the rear end portion of the rubber plate 16 is located at a height position between the center portion in the vertical direction of the leveling body 21 and the fixing bolt 31, for example, a position slightly lower than the fixing bolt 31. Is located.

  A back plate 36 is erected on the rear surface of the leveling body 21, and a ground pressure adjusting means 37 for the leveling body 21 is installed between the back plate 36 and the machine body 2. Moreover, the gauge ring 40 for maintaining the tilling depth of the tilling body 8 constant is provided in the front part of the body 2 (refer FIG. 1).

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

  When the farm work machine 1 is connected to the three-point link at the rear of the tractor and the tractor travels forward, the farm work machine 1 as a whole moves forward (traveling direction) together with the tractor while the tiller 8 rotates in a predetermined direction. Tilling work is performed, and the leveling body 21 is integrated with the stainless steel plate 23 at the rear of the tilling body 8 to perform the leveling work.

  Here, for example, when the stainless steel plate 23 is damaged and needs to be replaced, only the stainless steel plate 23 is removed from the leveling body 21 and a new stainless steel plate 23 is attached to the leveling body 21.

  Specifically, the removal of the stainless steel plate 23 first releases the fixation of the upper end portion of the stainless steel plate 23 with respect to the upper portion of the leveling body 21 by releasing the screwing of the fixing bolt 31 and the nut 32. Thereafter, the fitting and fixing between the lower end portion of the stainless steel plate 23 and the lower end portion of the leveling body 21 is released.

  The stainless steel plate 23 is attached by fitting and fixing the lower end portion of the stainless steel plate 23 and the lower end portion of the leveling body 21 to each other, and then screwing the fixing bolt 31 into the nut 32 in the nut housing portion 33 from the bolt hole. By combining, the upper end of the stainless steel plate 23 is fixed to the upper part of the leveling body 21.

  According to the agricultural machine 1, since the stainless steel plate 23 is detachably attached to the leveling body 21, for example, when the stainless steel plate 23 needs to be replaced due to damage or wear, the leveling body 21 is replaced. Therefore, only the damaged stainless steel plate 23 can be replaced. Therefore, the replacement work is easy, and the costs associated therewith can be reduced.

  Further, since the fixing bolt 31 for releasably fixing the stainless steel plate 23 to the upper portion of the leveling body 21 is covered with the rubber plate 16, soil adhesion to the fixing bolt 31 can be prevented. The replacement work can be performed more easily. That is, for example, soil that has been released by the tilling claws 10 of the rotating tillage body 8 can be prevented from adhering to the fixing bolts 31, and the fixing bolts 31 can be damaged or deformed by stones that have been released by the tilling claws 10. Can also be prevented.

  Further, the stainless steel plate 23 can be easily fixed to the upper part of the leveling body 21 by screwing the fixing bolt 31 to the nut 32, and the stainless steel plate 23 to the upper part of the leveling body 21 by releasing the screwing. Can be easily released.

  Further, since the nut 32 is accommodated in the nut accommodating portion 33 of the leveling body 21, the nut 32 can be protected and soil adhesion to the nut 32 can be prevented.

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

  Unlike the first embodiment, the agricultural machine 1 according to the second embodiment is disposed above the tillage body 8 instead of the tillage cover body 11 and the rubber plate 16 and the like. 8 is provided with a rubber cover plate 41 which is an elastic body serving as an elastically deformable plate-like cover body covering the upper portion of 8.

  That is, a rubber cover plate 41 that is a rubber plate that covers at least a part of the upper portion of the tillage body 8, that is, for example, the entire upper portion of the tillage body 8 (including substantially the whole) is detachably attached to the body 2. .

  The machine body 2 includes a front frame portion 42 that is longitudinal in the left-right direction and a rear frame portion 43 that is longitudinal in the left-right direction. Also, the front end portions of a plurality of longitudinally extending rubber cover support plates (elastic body support members) 45 bent at a plurality of locations are attached to the front frame portion 42 via the front attachment means 46, and the rubber The rear end portion of the cover support plate 45 is attached to the rear frame portion 43 through the rear attachment means 47.

  The rubber cover plate 41, which is a soil adhesion prevention cover body, is supported from below by a plurality of rubber cover support plates 45 that are spaced apart in the left-right direction, and has a curved plate shape that protrudes upward. .

  The rubber cover plate 41 is, for example, a rectangular plate having a longitudinal direction in the left-right direction, and is composed of a single rubber member (elastic member) that is hard to adhere to soil. In the plan view, the length of the rubber cover plate 41 in the front-rear direction is longer than the length of the tiller 8 in the front-rear direction.

  The front end side portion 41a of the rubber cover plate 41 is supported by the rubber cover support plate 45 and is positioned near the lower portion of the front frame portion. On the other hand, the rear end side portion 41b of the rubber cover plate 41 is not supported by the rubber cover support plate 45, and extends obliquely downward from the rear end portion of the rubber cover support plate 45. Located behind. The rear end portion of the rubber cover plate 41 is a free end portion 50.

  The rear end side portion 41b of the rubber cover plate 41 is located between the tillage body 8 and the fixing bolt 31, and is lined up with a gap in the left-right direction by the rear end side portion 41b of the rubber cover plate 41. All of the plurality of fixing bolts 31 are covered. That is, the fixing bolt 31 is hidden behind the rear end portion 41b of the rubber cover plate 41 so that soil from the tillage body 8 does not adhere to the fixing bolt 31.

  Further, the free end 50 at the rear end of the rubber cover plate 41 is located in the vicinity of the front of the fixing bolt 31, and there is a gap 35 between the rear end side portion 41b of the rubber cover plate 41 and the fixing bolt 31. (See FIG. 5). The rear end portion 41b of the rubber cover plate 41 may be in contact with the head of the fixing bolt 31.

  Furthermore, the free end portion 50 at the rear end portion of the rubber cover plate 41 is located at a height position between the center portion in the vertical direction of the leveling body 21 and the fixing bolt 31, and is slightly lower than the fixing bolt 31, for example. Located in position.

  In the second embodiment, the leveling body 21 is provided on the rear frame portion 43 of the machine body 2 so as to be rotatable in the vertical direction about the rotation center axis (rotation fulcrum) X in the left-right direction. Yes. In other words, the upper end portion of the leveling body 21 is rotatably attached to the rear frame portion 43 via a hinge 22 that is a plurality of (for example, four) connecting members. A rubber cover plate 41 is disposed below the hinge 22 so that soil from the tillage body 8 does not adhere to the hinge 22. The other configurations of the second embodiment are basically the same as those of the first embodiment.

  Also in the agricultural machine 1 according to the second embodiment, only the stainless steel plate 23 can be replaced, and the fixing bolt 31 for releasably fixing the stainless steel plate 23 to the upper portion of the leveling body 21 is a rubber cover plate ( Since it is covered with the elastic body 41, the same effects as those of the first embodiment can be achieved, such as prevention of soil adhesion to the fixing bolt 31.

  In any of the above embodiments, the elastic body, which is a cover body (soil adhesion prevention cover body) that has a soil adhesion prevention performance and is difficult to adhere to soil, is a rubber member (rubber plate 16 or rubber cover plate 41). ) Is not limited, and may be a resin member or the like.

  Further, the soil adhesion preventing body that covers the surface of the leveling body 21 on the side of the tillage body 8 may be made of a member other than a stainless steel plate (for example, a resin plate or a rubber plate).

  Further, the lower end portion of the soil adhesion preventing body may be releasably fixed to the lower end portion of the leveling body by using a fixing means including, for example, a bolt and a nut.

  The fixing means for releasably fixing the soil adhesion preventing body to the leveling body may be means other than bolts and nuts.

1 Agricultural machinery 8 Tillage
16 Rubber plate as an elastic body as a cover
16b Rear end side
21 Leveling body
23 Stainless steel plate as a soil adhesion prevention body
24 Main plate
25 Curved plate
31 is a fixed means fixed bolts
35 Clearance
41 Rubber cover plate which is an elastic body as a cover body
41b Rear end side

Claims (4)

A plowing body for plowing work,
A cover body covering this tillage body,
A leveling body that performs leveling work behind the tilled body,
A soil adhesion preventing body that is detachably attached to the leveling body and covers a surface of the leveling body on the side of the tillage body,
A plurality of fixing means for releasably fixing the soil adhesion preventing body to the upper part of the leveling body,
All of the plurality of fixing means are obscured by the cover body ,
Of the surface on the side of the tillage body of the leveling body, the portion excluding the upper end side is covered with the soil adhesion preventing body,
Of the surface of the leveling body on the side of the tillage body, the upper end side portion that is not covered by the soil adhesion prevention body is covered by the cover body,
The soil adhesion preventing body has a main body plate portion and a curved plate portion that is connected to the lower end portion of the main body plate portion and bent upward.
The farm machine according to claim 1, wherein the curved plate portion of the soil adhesion preventing body is releasably fitted and fixed to a lower end portion of the leveling body . The agricultural working machine according to claim 1, wherein the soil adhesion preventing body is made of stainless steel. The soil adhesion prevention body is a stainless steel plate,
The plurality of fixing means are arranged in a line at intervals in the left-right direction at the top of the leveling body,
The agricultural working machine according to claim 1, wherein the stainless steel plate can be removed from the leveling body only by removing the plurality of fixing means. The agricultural machine according to any one of claims 1 to 3 , wherein a gap exists between the rear end portion of the cover body and the fixing means.

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