JP2017006082A - Agricultural implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agricultural implement capable of preventing breakage caused by deflection of an elastic plate.SOLUTION: An agricultural implement 11 includes a machine body 12 connected to a running car. The machine body 12 is provided with a tillage body and a ground leveling body 31. An upper part of the tillage body is covered with an elastically-deformable elastic plate 41. A plurality of support members 42 which are longitudinal in the cross direction for supporting the elastic plate 41 from the lower side are mounted on the machine body 12. A plurality of additional support members 43 for supporting a part positioned between the support members 42 of the elastic plate 41 from the lower side are mounted on the machine body 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an agricultural machine capable of preventing damage due to bending of an elastic plate.

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

  For example, as shown in FIGS. 12 (a) and 12 (b), this conventional agricultural working machine is an elastically deformable elastic plate that covers an upper portion of a tillage body (not shown) that performs tillage work while rotating in a predetermined direction. 1 and a plurality of longitudinally supporting members 2 that support the elastic plate 1 from below.

JP 2010-284106 A

  However, in the conventional farm work machine, for example, when soil adheres to the lower surface of the elastic plate 1, the elastic plate 1 bends downward due to the weight of the attached soil, and as a result, the tillage while the elastic plate 1 is rotating. There is a risk of contact with the body and damage.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can prevent the damage by the bending of an elastic board.

  The agricultural machine according to claim 1 is a machine body connected to a traveling vehicle, a tiller body rotatably provided on the machine body, a ground leveling body that performs ground leveling work behind the tillage body, An elastically deformable elastic plate covering the upper part of the tillage body, a plurality of longitudinally supporting members attached to the machine body and supporting the elastic board from below, and attached to the machine body, Among these, a plurality of additional support members that support portions located between the support members from below are provided.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the elastic plate is located at a rear position of the plurality of front mounting holes arranged in the left-right direction and the front mounting holes in plan view. A plurality of rear mounting holes and a rear position of an intermediate portion between the front mounting holes in a plan view and a position not coincident with the front mounting hole and the rear mounting hole in a side view And having a plurality of intermediate mounting holes.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 2, wherein the front mounting hole, the rear mounting hole, and the intermediate mounting hole are all formed in a long hole shape. .

  The farm machine according to claim 4 is the farm machine according to claim 2 or 3, wherein the additional support member supports the peripheral portion of the intermediate mounting hole of the elastic plate from below.

  The agricultural machine according to claim 5 is the agricultural machine according to claim 4, wherein the additional support member is a washer.

  According to the present invention, even if soil adheres to the lower surface of the elastic plate, the elastic plate is difficult to bend, so that the elastic plate can be prevented from being damaged.

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 top view of an agricultural working machine same as the above. (A) is a partial top view of an elastic board, (b) is an enlarged view of the hole for intermediate | middle attachment of an elastic board. (A) is a partial side view of the above agricultural working machine, (b) is a view as seen from the arrow A, and (c) is a partial cross-sectional view. It is a side view of the agricultural working machine which concerns on the 2nd Embodiment of this invention. It is a partial top view of an agricultural working machine same as the above. It is a side view of the agricultural machine based on the 3rd Embodiment of this invention. It is a partial top view of an agricultural working machine same as the above. It is a side view of the agricultural machine based on the 4th Embodiment of this invention. It is a partial top view of an agricultural working machine same as the above. (A) is a partial side view of the conventional agricultural working machine, (b) is a B arrow view.

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

  Reference numeral 11 in the figure denotes an agricultural machine. The agricultural machine 11 is connected to the rear part of a tractor (not shown), which is a traveling vehicle, for example, and the agricultural field is moved forward by the forward movement of the tractor while moving the field forward. It is a tow-type rotary working machine (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 inputs power from the tractor side to the farm work machine 11 side.

  On the left and right side portions of the mission case 15, inner end portions of a frame pipe 16 that is a main frame that is longitudinal in the left-right direction are respectively attached.

  An upper portion of a chain case (cultivated body support portion) 17 is attached to the left end portion which is the outer end portion of the left frame pipe 16. 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 frame pipe 16.

  Further, between the lower part of the chain case 17 and the lower part of the bracket 18, a cultivating body (rotary) 21 is installed that rotates in a predetermined rotational direction (for example, a down cut direction) by power from the input shaft 14 side. Has been. That is, the body 12 is rotatably provided with a cultivating body 21 that performs a cultivating operation while rotating.

  The cultivating body 21 has a cultivating shaft 22 in the left-right direction that is rotatably supported by the chain case 17 and the bracket 18, and a plurality of cultivating claws 23 that are detachably attached to the cultivating shaft 22.

  The machine body 12 has a cylindrical front frame 24 that is longitudinal in the left-right direction and a plate-like rear frame 25 that is longitudinal in the left-right direction. The front frame 24 is attached to a front portion of a frame attachment plate 26 fixed to the frame pipe 16 via a front attachment plate 27. The rear frame 25 is attached to the rear portion of the frame attachment plate 26 fixed to the frame pipe 16 via the rear attachment plate 28.

  In the rear frame 25 of the machine body 12, a plate-shaped leveling body (level plate) 31 that performs leveling work behind the tilled body 21 rotates up and down about a horizontal axis 30 via a hinge 29. It is provided as possible. An extended leveling body 32 is foldably provided at both ends of the leveling body 31 in the left-right direction.

  Here, front mounting pins 36 that are front mounting portions are fixedly provided at a plurality of locations (for example, 5 locations) of the front frame 24. Each front mounting pin 36 is formed with a screw hole 36a that opens downward.

  A rear mounting pin 37 as a rear mounting portion is fixed to a plurality of locations (for example, five locations) on the lower surface of the rear portion of the rear frame 25 so as to be positioned corresponding to the front mounting pin 36 and the front and rear. Each rear mounting pin 37 is formed with a screw hole 37a that opens downward.

  Intermediate mounting pins 38 that are intermediate mounting portions are fixed at a plurality of locations (for example, four locations) on the lower surface of the front portion of the rear frame 25 so as to be shifted from the rear mounting pins 37. Each intermediate mounting pin 38 is formed with a screw hole 38a that opens downward. The rear mounting pin 37 and the intermediate mounting pin 38 are not arranged in the front-rear direction, but are disposed in front of the center between the two rear mounting pins 37 adjacent to each other.

  Further, the agricultural machine 11 includes an elastic plate (for example, a rubber plate) 41 that is an elastically deformable plate in the left-right direction that covers the upper portion of the cultivating body 21, and an elastic plate 41 that is detachably attached to the machine body 12. A plurality of (for example, five) plate-like support members (for example, five rubber support plates) 42 that are longitudinally supported in the front-rear direction, and between the two support members 42 adjacent to each other among the elastic plates 41 that are detachably attached to the body 12 And a plurality of (for example, four) additional support members 43 that locally support the portion located at the bottom.

  The support member 42 supports the elastic plate 41 over substantially the entire length in the front-rear direction, but the additional support member 43 supports only a part of the elastic plate 41 in the front-rear direction.

  As shown in FIGS. 1 and 4 and the like, the elastic plate 41 is made of, for example, only one rubber plate member, is elongated in the left-right direction, and has a rectangular shape in plan view.

  In the front end portion of the elastic plate 41, a plurality (for example, five) of front mounting hole portions 46 are formed that are arranged in the left-right direction at intervals (for example, equal intervals). The rear end of the elastic plate 41 is positioned behind the front mounting hole 46 in a plan view so as to correspond to the front mounting hole 46 and the front and rear, and are spaced apart from each other (for example, at equal intervals). A plurality of (for example, five) rear mounting holes 47 arranged in the left-right direction are formed.

  Further, in the vicinity of the rear end portion of the elastic plate 41, the front mounting hole 46 is located at the rear position of the central portion that is an intermediate portion between the two front mounting holes 46 adjacent to each other in plan view and in side view. A plurality of (for example, four) intermediate mounting holes 48 are formed that are located at positions that do not coincide with the rear mounting hole 47 and are arranged in the left-right direction at intervals (for example, equal intervals).

  Each of these holes 46, 47, 48 is a long hole having the same size, and is formed in a long hole shape elongated in the front-rear direction. And as shown in FIG.4 (b), cylindrical attachment pins 36, 37, and 38 are loosely inserted in the long hole-shaped holes 46, 47, and 48. As shown in FIG.

  For this reason, the mounting pins 36, 37, 38 are movable in the front-rear direction and the left-right direction relative to the elastic plate 41 in the elongated holes 46, 47, 48. That is, the elastic plate 41 is placed on the support member 42 and the additional support member 43, and is slidable back and forth and left and right with respect to the support member 42 and the additional support member 43.

  The elastic plate 41 supported by both the members 42 and 43 has a generally curved plate shape that protrudes upward as a whole, but a part of the elastic plate 41 (for example, the rear portion of the elastic plate 41) has a flat plate shape. This flat portion is a portion that is easily bent.

  As shown in FIG. 1 and FIG. 5, each support member 42 is composed of only one metal plate-like member bent at a plurality of intermediate positions, for example, and is longitudinal in the front-rear direction. The direction length dimension is slightly smaller than the length dimension of the elastic plate 41 in the front-rear direction. Further, circular mounting holes 51 and 52 are formed at both ends in the front-rear direction of each support member 42.

  The front end portion of the support member 42 is detachably attached to the lower surface of the front attachment pin 36 of the body 12 by a bolt 53 that is an attachment. That is, the front attachment pin 36 is loosely inserted into the front attachment hole 46 of the elastic plate 41, and the bolt 53 is attached to the attachment hole of the support member 42 with respect to the screw hole 36a of the loosely attached front attachment pin 36. Screwed through part 51.

  Similarly, the rear end portion of the support member 42 is detachably attached to the lower surface of the rear attachment pin 37 of the machine body 12 by a bolt 54 that is an attachment. That is, the rear mounting pin 37 is loosely inserted into the rear mounting hole 47 of the elastic plate 41, and the bolt 54 is attached to the mounting hole of the support member 42 with respect to the screw hole 37a of the loosely mounted rear mounting pin 37. Screwed through part 52.

  Thus, the support member 42 is attached to the front attachment pin 36 and the rear attachment pin 37 of the airframe 12, and the lower surface of the elastic plate 41 is supported by the attached support member 42.

  As shown in FIGS. 1 and 5, each additional support member 43 is constituted by a circular annular plate washer 50 that supports only the peripheral portion of the intermediate mounting hole 48 of the elastic plate 41 from below, for example. Has been.

  That is, for example, the additional support member 43 is a metal washer (small piece member) 50 that supports only the portion of the elastic plate 41 located around the intermediate mounting hole 48 from below. The outer diameter of the washer 50 is, for example, larger than the horizontal dimension (width dimension) of the intermediate mounting hole 48, but smaller than the longitudinal dimension of the intermediate mounting hole 48. Although not shown, the outer diameter of the washer 50 may be larger than the length of the intermediate mounting hole 48 in the front-rear direction.

  The additional support member (washer 50) 43 is detachably attached to the lower surface of the intermediate attachment pin 38 of the machine body 12 by a bolt 55 which is an attachment. That is, the intermediate mounting pin 38 is loosely inserted into the intermediate mounting hole 48 of the elastic plate 41, and the bolt 55 is connected to the inner peripheral side of the washer 50 with respect to the screw hole 38a of the loosely mounted intermediate mounting pin 38. Screwed through.

  Thus, the additional support member 43 is attached to the intermediate mounting pin 38 of the machine body 12, and the lower surface of the elastic plate 41 is supported by the attached additional support member 43. That is, the elastic plate 41 is supported from below by the support member 42 and the additional support member 43 having different shapes.

  As shown in FIG. 2, the front frame 24 of the machine body 12 is provided with a pair of left and right gauge wheel means 60 for setting the tilling depth of the tilling body 21.

  Next, the operation and the like of the farm work machine 11 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 tilling body 21 performs the tilling work while rotating, and the leveling body 31 performs the leveling work behind it.

  At this time, since the upper part of the cultivating body 21 is covered with the elastic plate 41, the elastic plate 41 prevents the soil from the cultivating body 21 from scattering upward.

  Even if soil adheres to the lower surface of the elastic plate 41, since the elastic plate 41 is supported from below by the plurality of support members 42 and the plurality of additional support members 43, the elastic plate 41 is difficult to bend downward. 41 does not come into contact with the rotating tillage nail 23 and break.

  According to the agricultural machine 11 as described above, not only the plurality of longitudinally-supporting support members 42 but also the portion of the elastic plate 41 located between the two support members 42 adjacent to each other on the left and right are locally viewed from below. Since the washer 50, which is a plurality of additional support members 43 to be supported, is provided, the elastic plate 41 is unlikely to be bent downward even when soil adheres to the lower surface of the elastic plate 41, and damage due to the bending of the elastic plate 41 can be prevented. .

  Further, since the intermediate mounting hole 48 through which the intermediate mounting pin 38 passes is formed in the vicinity of the rear end portion of the elastic plate 41, the front end side of the elastic plate 41 vibrates greatly during operation, while the elastic plate 41 Since the rear end side vibrates in small increments, the difference in vibration makes it difficult for the soil to adhere to the lower surface of the elastic plate 41, and the soil adhesion to the elastic plate 41 can be suppressed.

  Further, since the front mounting hole 46, the rear mounting hole 47, and the intermediate mounting hole 48 are all formed in a long hole shape, the elastic plate 41 is provided with respect to the support member 42 and the additional support member 43. Thus, it can be slid back and forth and left and right by the length of the long hole, and soil adhesion to the elastic plate 41 can be further suppressed.

  In the first embodiment, the intermediate mounting pin 38 is fixed to the rear frame 25 of the fuselage 12. However, the present invention is not limited to this configuration. For example, the following second to fourth embodiments are provided. In this embodiment, the same effects as those of the first embodiment can be obtained.

  6 and 7 show an agricultural machine 11 according to the second embodiment.

  In this embodiment, the intermediate mounting pin 38 is fixed to the frame pipe (center frame) 16 of the body 12. Correspondingly, the intermediate mounting hole 48 is formed in the front-rear direction center (including the substantially center) of the elastic plate 41.

  8 and 9 show an agricultural machine 11 according to the third embodiment.

In this embodiment, the intermediate mounting pin 38 is fixed to the frame mounting plate 26 of the body 12.
Correspondingly, the intermediate mounting hole 48 is formed slightly rearward of the central portion of the elastic plate 41 in the front-rear direction.

  10 and 11 show an agricultural machine 11 according to the fourth embodiment.

  In this embodiment, the intermediate mounting pin 38 is fixed to the front frame 24 of the body 12. Correspondingly, the intermediate mounting hole 48 is formed at the front end of the elastic plate 41.

  In any of the above embodiments, the number of support members 41 and additional support members 42 is arbitrary as long as it is plural. For example, a configuration having six or more support members 41 or an additional support member (washer) 42. The structure etc. which have 4 or more may be sufficient.

  Furthermore, each hole 46, 47, 48 is not limited to a long hole in the longitudinal direction, and may be a circular hole into which the mounting pins 36, 37, 38 can be inserted, for example.

  Further, the additional support member 43 is not limited to the washer 50, and may be, for example, a support bolt that supports the peripheral portion of the intermediate mounting hole 48 of the elastic plate 41 from below with a bolt head.

  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.

11 Agricultural machines
12 Airframe
21 Tillage
31 Leveling body
41 Elastic plate
42 Support member
43 Additional support members
46 Front mounting hole
47 Rear mounting hole
48 Intermediate mounting hole
50 washer

Claims (5)

A fuselage connected to the traveling vehicle;
A plowing body that is rotatably provided in this machine body and performs a plowing work,
A leveling body that performs leveling work behind this tilled body,
An elastically deformable elastic plate covering the upper part of the tillage body;
A plurality of longitudinally supporting members attached to the airframe and supporting the elastic plate from below;
A plurality of additional support members attached to the machine body and supporting portions of the elastic plate located between the support members from below. The elastic plate
A plurality of front mounting holes arranged in the left-right direction;
A plurality of rear mounting holes located in a rear position of the front mounting hole in plan view;
A plurality of intermediate mounting holes positioned in a rear position of an intermediate portion between the front mounting holes in a plan view and not in alignment with the front mounting hole and the rear mounting hole in a side view The agricultural working machine according to claim 1, wherein: The agricultural working machine according to claim 2, wherein the front mounting hole, the rear mounting hole, and the intermediate mounting hole are all formed in a long hole shape. The farm work machine according to claim 2 or 3, wherein the additional support member supports a peripheral portion of the intermediate mounting hole of the elastic plate from below. The farm work machine according to claim 4, wherein the additional support member is a washer.

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