JP6544825B2 - Farm work machine - Google Patents

Description

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

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

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

JP, 2010-284106, A

  However, in the above-described conventional agricultural work machine, when soil adheres to the lower surface of the elastic plate 1, for example, the elastic plate 1 bends downward by the weight of the adhered soil, and as a result, the tillage while the elastic plate 1 is rotating. Contact with the body may cause damage.

  This invention is made in view of such a point, and an object of this invention is to provide the farm work machine which can prevent the failure | damage by bending of an elastic board.

The agricultural work machine according to claim 1 comprises an airframe connected to a traveling vehicle, a tillage body rotatably provided on the airframe, a tillage body for carrying out a tillage operation, a ground adjustment body for carrying out a ground adjustment operation behind the tillage body, An elastically deformable elastic plate covering an upper portion of the tillage body, a plurality of longitudinal supporting members attached to the machine body for supporting the elastic plate from below, and the elastic plate attached to the machine body; And a plurality of additional support members that locally support only a part in the front-rear direction in the portion located between the support members from below.

  The agricultural work machine according to claim 2 is the agricultural work machine according to claim 1, wherein the elastic plate is located at a rear position of the plurality of front attachment holes aligned in the left-right direction and the front attachment hole in plan view A plurality of post mounting holes and a position at 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 holes and the rear mounting holes in a side view And a plurality of intermediate mounting holes located.

  The agricultural work machine according to claim 3 is the agricultural work 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. .

  A farm work machine according to claim 4 is the farm work 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 work machine according to claim 5 includes an airframe connected to a traveling vehicle, a tillage body rotatably provided on the airframe, a tillage body for performing a tillage operation, a ground adjustment body for performing a clearing operation behind the tillage body, and An elastically deformable elastic plate covering an upper portion of the tillage body, a plurality of longitudinal supporting members attached to the machine body for supporting the elastic plate from below, and the elastic plate attached to the machine body; And the elastic plate includes a plurality of front attachment holes aligned in the left-right direction, and the front attachment holes in plan view. A plurality of rear mounting holes positioned at the rear position of the rear mounting position and a rear position of an intermediate portion between the front mounting holes in the plan view and the front mounting holes and the rear mounting holes in the side view Have a plurality of intermediate mounting holes located at positions not coincident with the The additional support members are those wherein washer for supporting the peripheral portion of the intermediate attachment hole portion of the elastic plate from below.

  According to the present invention, even if soil adheres to the lower surface of the elastic plate, the elastic plate is less likely to be bent, so that damage due to the bending of the elastic plate can be prevented.

It is a top view of a farm work machine concerning a 1st embodiment of the present invention. It is a side view of the same agricultural work machine. It is a partial top view of a farming machine same as the above. (A) is a partial top view of an elastic board, (b) is an enlarged view of a hole for intermediate attachment of an elastic board. (A) is a partial side view of the same agricultural working machine, (b) is a view on arrow A, (c) is a partial sectional view. It is a side view of a farm work machine concerning a 2nd embodiment of the present invention. It is a partial top view of a farming machine same as the above. It is a side view of a farm work machine concerning a 3rd embodiment of the present invention. It is a partial top view of a farming machine same as the above. It is a side view of a farm work machine concerning a 4th embodiment of the present invention. It is a partial top view of a farming machine same as the above. (A) is a partial side view of the conventional farming machine, and (b) is a B arrow view.

  A first embodiment of the present invention will be described with reference to FIGS. 1 to 5.

  Reference numeral 11 in the figure is a farm work machine, and this farm work machine 11 is connected to the rear of a tractor (not shown), which is a traveling vehicle, for example, and performs farming while moving the field forward in the traveling direction by forward traveling of the tractor. It is a tow-type rotary work machine that carries out work (plowing work, etc.).

  The agricultural working machine 11 is provided with an airframe 12 detachably connected to a three-point link portion at the rear of a tractor (not shown).

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

  Inner end portions of a frame pipe 16 which is a main frame elongated in the left-right direction are attached to the left and right side surface portions of the transmission case 15, respectively.

  At the left end portion, which is the outer end portion of the left side frame pipe 16, the upper portion of a chain case (the cultivation body support portion) 17 is attached. The upper portion of a plate-like bracket (the cultivation body support portion) 18 is attached to a right end portion which is an outer end portion of the right side frame pipe 16.

  And between the lower part of the chain case 17 and the lower part of the bracket 18, a tiller (rotary) 21 for carrying out a cultivating work while rotating in a predetermined rotation direction (for example, downcut direction) by power from the input shaft 14 side It is done. That is, the tillage body 21 which performs a tillage operation while rotating is provided rotatably on the machine body 12.

  The cultivating body 21 has a horizontal direction cultivating shaft 22 rotatably supported by the chain case 17 and the bracket 18, and a plurality of cultivating claws 23 detachably attached to the cultivating shaft 22.

  Further, the airframe 12 has a tubular front frame 24 which is longitudinal in the left-right direction, and a plate-like rear frame 25 which is longitudinal in the left-right direction. The front frame 24 is attached to the front of the frame attachment plate 26 fixed to the frame pipe 16 via the front attachment plate 27. The rear frame 25 is attached to the rear of the frame attachment plate 26 fixed to the frame pipe 16 via the rear attachment plate 28.

  Then, in the rear frame 25 of the airframe 12, a plate-like leveling body (flat plate) 31 that performs leveling work behind the tillage body 21 pivots vertically about the axis 30 in the left-right direction via the hinge 29. It is possible. The extended ground body 32 is provided at both ends in the left-right direction of the ground body 31 so as to be foldable.

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

  At a plurality of locations (for example, five locations) on the rear lower surface of the rear frame 25, rear attachment pins 37, which are rear attachment portions, are fixed so as to be positioned corresponding to the front attachment pins 36 in the front-rear direction. Each rear mounting pin 37 is formed with a screw hole 37 a that opens downward.

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

  In addition, the agricultural working machine 11 includes a resilient plate (e.g., a rubber plate) 41 which is elastically deformable in the left-right direction and covers the upper portion of the cultivating body 21 and an elastically deformable plate (e.g., a rubber plate) 41. Between a plurality of (for example, five) support members (for example, rubber receiving plates) 42 in the longitudinal direction and longitudinal direction to support from the two support members 42 of the elastic plate 41 which are detachably attached to the airframe 12. And a plurality of (for example, four) additional support members 43 for locally supporting the portion located at the bottom from below.

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

  The front end portion of the elastic plate 41 is formed with a plurality of (for example, five) front attachment holes 46 arranged in the left-right direction at an interval (for example, at equal intervals). Further, at the rear end portion of the elastic plate 41, it is positioned at the rear position of the front mounting hole 46 in plan view to correspond to the front mounting hole 46 in the front and back, and mutually spaced (for example, equally spaced) In addition, a plurality of (for example, five) rear attachment holes 47 aligned in the left-right direction are formed.

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

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

  For this reason, the mounting pins 36, 37, 38 can be moved relative to the elastic plate 41 in the front-rear direction and the left-right direction in the elongated hole portions 46, 47, 48. That is, the elastic plate 41 is placed on the support member 42 and the additional support member 43, and can slide in the front, rear, left, and right directions with respect to the support member 42 and the additional support member 43.

  The elastic plate 41 supported by both members 42 and 43 is generally in the form of a substantially curved plate convex upward as a whole, but a part thereof (for example, the rear portion of the elastic plate 41) is flat. The flat portion is a flexible portion.

  Each of the support members 42 is, for example, as shown in FIG. 1 and FIG. 5 or the like, formed of only a single metal plate member bent at a plurality of intermediate points, for example. The length dimension in the direction is slightly smaller than the length dimension in the front-rear direction of the elastic plate 41. Further, circular attachment holes 51 and 52 are formed at both end portions 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 machine body 12 by a bolt 53 which is an attachment. That is, the front mounting pin 36 is loosely inserted into the front mounting hole 46 of the elastic plate 41, and the bolt 53 is a mounting hole of the support member 42 with respect to the screw hole 36a of the loosely mounted front mounting pin 36. It is screwed through part 51.

  Similarly, the rear end portion of the support member 42 is detachably mounted on the lower surface of the rear mounting pin 37 of the machine body 12 by a bolt 54 which is a mounting tool. That is, the rear mounting pin 37 is loosely inserted in the rear mounting hole 47 of the elastic plate 41, and the bolt 54 is a mounting hole for the support member 42 with respect to the screw hole 37a of the mounting pin 37 after the loose mounting. It is 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.

  Each additional support member 43 is, for example, as shown in FIG. 1 and FIG. 5 or the like, configured by a circular annular plate-like washer 50 supporting only the peripheral portion of the intermediate mounting hole 48 of the elastic plate 41 from below. It is done.

  That is, for example, the additional support member 43 is a metal washer (piece member) 50 that supports only the portion of the elastic plate 41 located around the intermediate attachment hole 48 from below. The outer diameter dimension of the washer 50 is, for example, larger than the lateral 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 longitudinal dimension of the intermediate mounting hole 48.

  The additional support member (washer 50) 43 is detachably attached to the lower surface of the intermediate attachment pin 38 of the airframe 12 by a bolt 55, which is an attachment. That is, the intermediate mounting pin 38 is loosely inserted in the intermediate mounting hole 48 of the elastic plate 41, and the bolt 55 on the inner peripheral side of the washer 50 is inserted into the threaded hole 38a of the loosely inserted intermediate mounting pin 38. It is screwed through.

  Thus, the additional support member 43 is attached to the intermediate mounting pin 38 of the airframe 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 members 42 and the additional support members 43 having different shapes.

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

  Next, the operation and the like of the agricultural work machine 11 will be described.

  When the agricultural working machine 11 is connected to the rear of the tractor and the tractor travels forward by traveling the tractor, the tilling body 21 rotates while performing the tilling work, and the ground leveling body 31 performs the ground leveling work behind it.

  At this time, since the upper portion of the cultivating body 21 is covered by the elastic plate 41, the elastic plate 41 prevents the soil from the cultivating body 21 from being scattered upward.

  Also, even if soil adheres to the lower surface of the elastic plate 41, the elastic plate 41 is supported from below by the plurality of support members 42 and the plurality of additional support members 43, so it is difficult to bend downward and the elastic plate 41 does not break by contact with the rotating tiller 23.

  Then, according to such a farm work machine 11, not only the plurality of longitudinal support members 42 but also a portion of the elastic plate 41 located between the two support members 42 adjacent to each other from the lower part locally Since the washer 50 which is a plurality of additional support members 43 to support is provided, even if soil adheres to the lower surface of the elastic plate 41, the elastic plate 41 is less likely to be bent downward, and breakage due to the bending of the elastic plate 41 can be prevented. .

  In addition, 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. Since the rear end side vibrates little by little in size, soil does not easily adhere to the lower surface of the elastic plate 41 due to the difference in the vibration, and the soil adhesion to the elastic plate 41 can be suppressed.

  Furthermore, since the front mounting hole 46, the rear mounting hole 47, and the intermediate mounting hole 48 are all formed in the shape of a long hole, the elastic plate 41 can be used for the support member 42 and the additional support member 43. It is possible to slide back and forth and right and left by the length of the long hole, and to further suppress the soil adhesion to the elastic plate 41.

  In the first embodiment, the intermediate mounting pin 38 is fixed to the rear frame 25 of the airframe 12, but the present invention is not limited to this structure. For example, the second to fourth embodiments described below Also in the embodiment, the same function and effect as those of the first embodiment can be obtained.

  A farming machine 11 according to the second embodiment is shown in FIGS. 6 and 7.

  In this embodiment, the intermediate mounting pin 38 is fixed to the frame pipe (center frame) 16 of the airframe 12. Corresponding to this, the intermediate mounting hole portion 48 is formed in the longitudinal direction central portion (including a substantially central portion) of the elastic plate 41.

  8 and 9 show a farm work machine 11 according to a third embodiment.

In this embodiment, the intermediate mounting pin 38 is fixed to the frame mounting plate 26 of the airframe 12.
Corresponding to this, the intermediate mounting hole 48 is formed slightly behind the center of the elastic plate 41 in the front-rear direction.

  The agricultural working machine 11 which concerns on 4th Embodiment is shown by FIG. 10 and FIG.

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

  Further, in any of the above embodiments, the number of the support members 41 and the additional support members 42 is arbitrary as long as it is plural, for example, a configuration having six or more support members 41 or the additional support member (washer) 42 Or the like may be employed.

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

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

  Although some embodiments and modifications of the present invention have been described, it is also possible to appropriately combine the embodiments and modifications without departing from the scope of the present invention.

11 Farm work machine
12 aircraft
21 cultivation body
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)

An airframe connected to a traveling vehicle,
A cultivating body that is rotatably provided on the body and performs a cultivating operation,
The leveling body which performs leveling work behind this tillage body,
An elastically deformable elastic plate covering an upper portion of the tillage body;
A plurality of longitudinal support members attached to the body and supporting the elastic plate from below;
A plurality of additional support members attached to the body and locally supporting only a part in the front-rear direction in a portion of the elastic plate located between the support members; and a plurality of additional support members. The elastic plate is
A plurality of front mounting holes aligned in the left-right direction,
A plurality of rear mounting holes positioned at a rear position of the front mounting hole in a plan view;
A plurality of intermediate mounting holes located at a rear position of an intermediate portion between the front mounting holes in a plan view and at positions not coincident with the front mounting holes and the rear mounting holes in a side view The agricultural work machine according to claim 1, characterized in that: The agricultural work 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 agricultural machinery 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. An airframe connected to a traveling vehicle,
A cultivating body that is rotatably provided on the body and performs a cultivating operation,
The leveling body which performs leveling work behind this tillage body,
An elastically deformable elastic plate covering an upper portion of the tillage body;
A plurality of longitudinal support members attached to the body and supporting the elastic plate from below;
And a plurality of additional support members attached to the body and supporting from below the portion of the elastic plate located between the support members,
The elastic plate is
A plurality of front mounting holes aligned in the left-right direction,
A plurality of rear mounting holes positioned at a rear position of the front mounting hole in a plan view;
A plurality of intermediate mounting holes located at a rear position of an intermediate portion between the front mounting holes in a plan view and at positions not coincident with the front mounting holes and the rear mounting holes in a side view Have and
The additional supporting member is agricultural working machine you being a washer for supporting the peripheral portion of the intermediate attachment hole portion of the elastic plate from below.

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