JP2016002061A - Agricultural machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agricultural machine capable of performing proper tilling and land-leveling operation.SOLUTION: An agricultural machine 1 includes a tilling body 22 supported by a bracket part and a chain case part 28 of a machine body 21. The upper part of the tilling body 22 is covered with a tilling cover body 24. The tilling cover body 24 is fitted with a land-leveling body for performing a land-leveling operation behind the tilling body 22. The chain case part 28 of the machine body 21 is fitted with a guard body 61 for covering and protecting the chain case part 28 and guiding soil toward the tilling body 22 side. The guard body 61 includes a tilted upper plate part 66 which is tilted forward and downward.

Description

  The present invention relates to an agricultural machine that can perform appropriate tillage work.

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

  This conventional agricultural machine includes a machine body connected to the rear part of a traveling vehicle such as a tractor, a tiller body that is rotatably provided on the machine body and performs a tilling work, and a leveling body that performs a ground leveling work behind the farm body. A tiller cover body that covers the upper part of the tillage body, and a guard body that covers and protects the chain case portion that is the tiller body support portion of the machine body.

Japanese Patent Laid-Open No. 11-9004

  However, in the conventional agricultural machine described above, residual tilling by the chain case part of the machine body occurs, so there is a possibility that proper tillage work cannot be performed.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can perform suitable tillage work.

  The agricultural working machine according to claim 1, a machine body having a tillage body support portion, a tillage body that is supported by the tillage body support portion and performs a tillage work, and a leveling body that performs a leveling work behind the tillage body, The tiller cover body that covers the upper portion of the tillage body, and the guard body that covers and protects the tillage body support portion and that guides the soil toward the tillage body side, and the guard body has a downwardly inclined shape. It has an inclined upper plate part.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the cultivation cover body has an inclined plate portion that is inclined forwardly downward, and the inclined upper plate portion of the guard body and the inclination of the cultivation cover body. The plate portion is located on the same plane.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 2, wherein the inclined upper plate portion of the guard body and the inclined plate portion of the tillage cover body overlap in a side view.

  The agricultural machine according to claim 4 is the agricultural machine according to any one of claims 1 to 3, wherein the cultivator support part is a chain case part positioned at an outer end part of the machine body.

  According to the present invention, the guard body covers and protects the cultivating body support portion of the airframe and guides the soil toward the cultivating body side, so that an appropriate tillage operation can be performed, and the guard body is inclined forwardly and downwardly. Since it has an upper board part, it can control that impurities and soil, such as rice straw, accumulate on a guard body.

It is a fragmentary perspective view of the agricultural working machine which concerns on one embodiment of this invention. It is a partial side view of an agricultural working machine same as the above. It is side view sectional drawing of the cover body of an agricultural working machine same as the above. It is a whole rear view of an agricultural working machine same as the above. It is a front view of the guard body of a farm working machine same as the above. It is a bottom view of the guard body of a farm working machine same as the above. It is an outer side view of the guard body of a farm working machine same as the above. It is an inner side view of the guard body of a farm working machine same as the above.

  An 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 the rear part of a tractor (not shown), which is a traveling vehicle, for example, and is moved forward (in the direction of travel) on the field by traveling the tractor. The plowing and leveling work is performed.

  As shown in FIG. 4, the farm work machine 1 is, for example, a three-fold foldable farm work machine, and a central work part 2 that is detachably connected to the rear part of the tractor, and both right and left ends of the central work part 2 And a pair of left and right extension working parts 4 provided so as to be pivotable in the vertical direction around the pivot fulcrum 3, and a pivot drive means for pivoting the extension work part 4 relative to the central work part 2. And a hydraulic cylinder 5.

  Both extension working parts 4 have a symmetrical configuration, and rotate around the pivot point 3 with respect to the central working part 2 according to the expansion and contraction of the hydraulic cylinder 5. That is, both the extension working parts 4 are in a deployment work state located on the outer side of the central work part 2 by rotation in the deployment direction based on the extension operation of the hydraulic cylinder 5. Further, both the extension working parts 4 are in a folding non-working state located above the central working part 2 by turning in the folding direction based on the contraction operation of the hydraulic cylinder 5.

  In the agricultural machine 1, the central working unit 2 and the pair of left and right extension working units 4 perform the tilling work, and the central working unit 2 and the left and right extending working parts 4 perform the tilling work. It is possible to selectively switch between the state and the state in which only the central working unit 2 performs the tilling work.

  The central working unit 2 is a tractor connecting machine body 11 that is detachably connected to a three-point link part (agricultural machine lifting unit) at the rear of the tractor, and is supported by the central machine body 11 so as to be rotatable. A central tilling body (not shown) that performs the tilling work while rotating in the rotation direction, and a central leveling body 12 that performs the leveling work behind the central tilling body.

  The central working unit 2 includes a central tillage cover body 13 that is fixedly provided on the central body 11 and covers an upper portion of the central tillage body, and the central leveling body 12 is vertically moved at the rear end of the central tillage cover body 13. It is provided so as to be rotatable in the direction.

  The central airframe 11 has a mission case portion 15 at the center in the left-right direction, and an input shaft (not shown) in the front-rear direction is rotatably supported by the mission case portion 15. The input shaft is connected to the PTO shaft of the tractor via transmission means such as a joint.

  The central tillage body (not shown) has a left and right longitudinal tillage shaft that is rotatably supported by the central body 11, and the tilling claws 34 are attached to a plurality of claw holder portions 33 of the tillage shaft. ing.

  The center leveling body 12 has a first leveling plate (level plate) 17 attached to the rear end portion of the central tillage cover body 13 via a rubber cover 16, and a second leveling plate 17 is provided at the lower end portion of the first leveling plate 17. A leveling plate (rake) 18 is attached. Note that the upper end portion of the first leveling plate 17 may be rotatably attached to the rear end portion of the central tillage cover body 13 without using the rubber cover 16.

  As shown in FIGS. 1 to 3, the extension work part 4 can be turned up and down around the turning fulcrum 3 at the outer end (left and right end part) of the central body 11 of the central work part 2. A machine body (extension machine body) 21 attached to the cultivator body, a cultivating body (extended cultivating body) 22 that is rotatably supported by the machine body 21 and rotates in a predetermined rotation direction, and the cultivating body 22 And a leveling body (extended leveling body) 23 for performing leveling work behind.

  The extension working unit 4 is provided with a tillage cover body (extension tillage cover body) 24 that is fixedly provided on the machine body 21 and covers the upper part of the tillage body 22, and a leveling body 23 at the rear end of the tillage cover body 24. Is provided so as to be rotatable in the vertical direction.

  The machine body 21 has a frame pipe portion 26 which is a frame portion which is longitudinal in the left-right direction, and a bracket portion 27 which is a plate-shaped tillage body support portion is provided at an inner end portion which is one end portion of the frame pipe portion 26 in the longitudinal direction. The top of is attached. The upper part of the chain case part 28 which is a box-shaped tiller support part is attached to the outer end part which is the other longitudinal end part of the frame pipe part 26. The chain case portion 28 is located at the outer end portion of the machine body 21, that is, the outer end portion (outer end portion) of the agricultural machine 1.

  As apparent from FIG. 1, the chain case portion 28 includes a chain case side plate 29, a chain case main body 30 attached to the chain case side plate 29, and an upper and lower sides of the chain case main body 30 attached to the chain case main body 30. It has a guard plate 20 that covers and protects the middle portion in the direction. The chain case side plate 29 is formed with a front protruding plate portion 29a that protrudes forward from the chain case body 30.

  The cultivating body 22 has a cultivating shaft 31 having a left and right longitudinally cultivated shaft 31 rotatably supported by both cultivating body support portions that are spaced apart from each other, that is, an inner end side bracket portion 27 and an outer end side chain case portion 28. doing. That is, the inner end portion of the tillage shaft 31 is rotatably attached to the lower portion of the bracket portion 27 via a bearing, and the outer end portion of the tillage shaft 31 is rotatably attached to the lower portion of the chain case portion 28 via a bearing. ing. Further, the tilling shaft 31 has a plurality of claw holder portions 33 protruding from the outer peripheral surface of the shaft main body portion 32, and a tilling claw 34 is attached to each claw holder portion 33.

  The cultivator 22 receives power from a power transmission means (not shown) including a chain or the like housed in the chain case portion 28 of the machine body 21 and rotates in a predetermined rotation direction.

  The leveling body 23 has a first leveling plate (leveled plate) 37 attached to the rear end portion of the tillage cover body 24 via a rubber cover 36, and a second leveling plate at the lower end of the first leveling plate 37. (Rake) 38 is attached. An extended leveling plate (extended rake) 39 is provided at the outer end of the second leveling plate 38 so as to be foldable and unfoldable. Note that the upper end portion of the first leveling plate 37 may be rotatably attached to the rear end portion of the tilling cover body 24 without using the rubber cover 36.

  The tillage cover body 24 includes a plate-like cover body 41 that is located above the tillage body 22 and covers the upper portion of the tillage body 22 in the left-right direction. A cover inner plate 42 is fixed to an inner end portion (inner end portion) which is one end portion of the cover body 41 in the longitudinal direction, and the cover inner plate 42 is attached to the bracket portion 27 of the body 21. A cover outer plate 43 is fixed to the outer end portion (outer end portion) which is the other longitudinal end portion of the cover body 41, and this cover outer plate 43 is attached to the chain case side plate 29 of the chain case portion 28 of the machine body 21. ing.

  A rear reinforcing plate 44 is fixed to the rear end portion of the cover main body 41, and a front reinforcing plate 45 is fixed to the front end portion of the cover main body 41. A rubber plate 46 is attached to the fixture 47 on the front reinforcing plate 45. Attached.

  Further, as is clear from FIG. 3, the cover main body 41 includes, for example, an upwardly curved curved plate portion 51 positioned directly above the tilling shaft 31 of the tillage body 22, and the curved plate portion 51. A front inclined plate portion 52 that is an inclined plate portion having a front lower slope, a front lower slope, and a front inclined portion that is integrally connected to the front end portion, and a vertical that projects downward integrally from the front end portion of the front inclined plate portion 52. -Like downward projecting plate portion 53, a horizontal front projecting plate portion 54 that projects integrally forward from the lower end portion of this downward projecting plate portion 53, and a rear end portion of the curved plate portion 51 are integrally connected to one another The rear inclined plate portion 55, which is an inclined plate portion having a rearwardly inclined shape, is formed by the front high, low and low.

  The front reinforcing plate 45 is fixed to the front surface of the downward projecting plate portion 53 and the upper surface of the front projecting plate portion 54. The rear reinforcing plate 44 is fixed to the upper surface of the rear inclined plate portion 55.

  In addition, the inclination angle α with respect to the horizontal direction of the front inclined plate portion 52 that is inclined forwardly is, for example, 10 to 50 degrees, preferably 33 degrees. In FIG. 1, the hatched portion is the front inclined plate portion 52.

  In addition, the chain case part 28 on the outer end side of the machine body 21 of each of the left and right extension work parts 4 covers and protects the lower part of the chain case part 28, and soil (mud) in the field is placed on the side of the tillage body 22 side. A guard body (chain case guard) 61 that guides inwardly toward the inside is detachably attached by a fixture (for example, a bolt and a nut) 60.

  That is, while protecting the lower part of each chain case part 28 located in the both right and left outer ends (left and right outer end parts) of the agricultural machine 1 by covering the front and outer surfaces of the lower part of the chain case part 28, A guard body 61 for preventing the occurrence of residual tilling by the chain case portion 28 is provided.

  As shown in FIGS. 5 to 8, the guard body 61 includes an inner plate portion 63 and an outer plate portion 64 that are spaced apart from each other. The inner side plate part 63 is smaller than the outer side plate part 64, and is separated and opposed only to the front upper part of the outer side plate part 64. The inner plate 63 is attached to the outer surface of the front protruding plate 29a of the chain case side plate 29 so as to overlap the outer surface (see FIG. 1). Further, the outer plate portion 64 is formed with a notch portion 65 with which the guard plate 20 abuts.

  Then, the front lower slope of the front low rear height that is inclined with respect to the horizontal direction so that the upper end portion of the inner plate portion 63 and the upper end portion of the outer plate portion 64 are gradually located downward from the rear end toward the front end. Are connected by a slanted upper plate portion 66 having a shape. In other words, the inclined upper plate portion 66 is positioned in front of the chain case portion 28 in a front-down, rear-and-high height downwardly inclined shape in which the front side in the traveling direction is lowered and the rear side in the traveling direction is raised during the tilling work.

  The inclined upper plate portion 66 is formed in a substantially rectangular shape having a longitudinal direction in the front-rear direction in plan view, and an inner end portion which is one end portion in the width direction is an upper end portion of the inner plate portion 63, for example, The outer end portion, which is the other end in the width direction, is fixed to the upper end portion of the outer plate 64 and the upper end vicinity portion slightly lower than the upper end. The rear end portion of the inclined upper plate portion 66 is a free end portion 67, and the free end portion 67 is located close to (including abutting) the front surface 28a of the chain case portion 28 (FIG. 1). reference).

  The guard body 61 has a vertical vertical front plate portion 68 that integrally projects downward from the front end portion of the inclined upper plate portion 66, and obliquely downward and rearward from the lower end portion of the vertical front plate portion 68. An inclined front plate portion 69 having a sharp rear-falling slope with a front height, a rear height, and a low height projecting integrally, and a horizontal rear projecting plate portion 70 integrally projecting rearward from the lower end portion of the inclined front plate portion 69, have.

  Furthermore, the guard body 61 has a front guide plate portion (cut plate) 71 that guides the soil of the farm field located in the front toward the tillage body 22 side inward. The guide front plate portion 71 is inclined with respect to the front-rear direction so as to be gradually inward from the front end (outer end) toward the rear end (inner end). That is, the front guide plate portion 71 is positioned in a state of projecting obliquely inward and rearward from a position near the front end portion of the outer plate portion 64. The front guide plate portion 71 is located below the inclined front plate portion 69 in a front view, and the inner end portion, which is the rear end portion of the front guide plate portion 71, protrudes inward from the inner plate portion 63. doing.

  Further, a horizontal lower plate portion 72 is integrally provided at the lower end portion of the front guide plate portion 71, and the outer end portion of the lower plate portion 72 is fixed to the lower end portion of the outer plate portion 64. A front end side of the outer side plate portion 64 is bent toward the front guide plate portion 71 side to form a flank 73. The lower plate portion 72 is formed with a notch-shaped drain bolt hole 74.

  Here, as is clear from FIGS. 1 and 2, the flat inclined upper plate portion 66 of the guard body 61 and the flat front inclined plate portion 52 of the tillage cover body 24 are on the same plane (including substantially the same plane). The inclined upper plate portion 66 and the front inclined plate portion 52 overlap each other at the same height (including substantially the same height) in a side view.

  In this example, the inclined upper plate portion 66 of the guard body 61 is positioned slightly above the front inclined plate portion 52 of the tillage cover body 24. For example, the inclined upper plate portion 66 and the front inclined plate portion 52 are side surfaces. The inclined upper plate portion 66 may be positioned slightly lower than the front inclined plate portion 52.

  An inclination angle β with respect to the horizontal direction of the inclined upper plate portion 66 of the guard body 61 is, for example, 10 to 50 degrees, preferably 33 degrees, and is the same angle (substantially as the inclination angle α of the front inclined plate portion 52 of the tillage cover body 24). Including the same angle).

  Further, the longitudinal length dimension of the inclined upper plate portion 66 of the guard body 61 is shorter than the longitudinal length dimension of the front inclined plate portion 52 of the tillage cover body 24, and the front end side of the inclined upper plate portion 66 is the front side. The inclined plate portion 52 is positioned so as to protrude forward from the front end portion. The width dimension which is the length dimension in the left-right direction of the inclined upper plate part 66 of the guard body 61 is the same dimension (including substantially the same dimension) as the width dimension of the chain case part 28. The upper surface of the inclined upper plate portion 66 and the upper surface of the front inclined plate portion 52 are both formed in a planar shape.

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

  The farm work machine 1 is connected to the rear part of the tractor, and the farm work machine 1 is moved forward on the field by the traveling of the tractor, and the tilling work is performed.

  At the time of this work, at the positions of the left and right outer ends of the agricultural work machine 1, the soil (mud) in the field hits the guidance front plate 71 of the guard body 61 of the extension work part 4 and is guided to the tillage body 22 side. .

  Since the guided soil is cultivated by the cultivating claws 34 of the cultivating body 22, no residual tilling by the chain case portion 28 occurs. As a result, it is possible to perform appropriate tillage work, and it is possible to finish it finely to the edge.

  Further, since the upper surface portion of the guard body 61 is configured by the inclined upper plate portion 66 that is inclined forward and downward, for example, compared to a case where it is configured by a horizontal upper plate portion that is horizontal, it is more contaminated such as rice straw. Objects and soil in the field are unlikely to accumulate on the guard body 61. That is to say, for example, even if foreign matters and soil are put on the inclined upper plate portion 66 during work, they flow down by their own weight, so that the foreign matters and soil do not collect and collect on the inclined upper plate portion 66.

  As a result, for example, when moving between farm fields, it is less likely to drop impurities and soil on the road, and unnecessary work such as road cleaning is unnecessary, and work efficiency can be improved.

  And according to the agricultural machine 1, the guard body 61 covers and protects the chain case part 28 of the machine body 21 of each extension work part 4 and guides the soil toward the tillage body 22 side. Not only can it be protected, it can be properly cultivated, and the guard body 61 has a slanted upper plate 66 that is inclined forwardly, so that impurities such as rice straw and soil accumulate on the guard body 61. Can be suppressed.

  Further, the tillage cover body 24 has a front inclined plate portion 52 that is inclined forwardly, and the inclined upper plate portion 66 of the guard body 61 and the front inclined plate portion 52 of the tillage cover body 24 are located on the same plane, In addition, since the inclined upper plate portion 66 of the guard body 61 and the front inclined plate portion 52 of the tillage cover body 24 overlap with each other in a side view, it is effective to collect impurities such as rice straw and soil on the guard body 61. Can be suppressed.

  The farm work machine 1 is not limited to a three-fold foldable type, and may be, for example, a single work piece made up of only the central work part 2. In this case, for example, a tiller support part located at the left end of the machine body A guard body 61 is provided on the (chain case).

  Further, the tilling body support portion protected by the guard body 61 may be other than the chain case portion, for example, a bracket portion.

  Further, for example, a configuration without the guard plate 20 may be used, or a configuration in which the guard plate 20 is provided integrally with the guard body 61 may be used.

  Further, the inclined upper plate portion 66 of the guard body 61 and the front inclined plate portion 52 of the tillage cover body 24 are, for example, those having a downwardly inclined shape that curves upward or downward, or before being bent at a plurality of locations. It may be a downward slope.

1 Farming machine
21 Aircraft
22 Tillage
23 Leveling body
24 Tillage cover body
28 Chain case part which is the support body
52 Front inclined plate part which is an inclined plate part
61 Guard body
66 Inclined upper plate

Claims (4)

An airframe having a tillage body support,
A cultivated body that is supported by the cultivated body support portion and performs a cultivating work,
A leveling body that performs leveling work behind this tilled body,
A cultivation cover body covering an upper portion of the cultivation body;
The cover includes a guard body that covers and protects the tillage body support and guides the soil toward the tillage body side,
The guard body has an inclined upper plate portion that is inclined forward and downward. The tillage cover body has a slanted plate portion that is inclined forward and downward,
The agricultural working machine according to claim 1, wherein the inclined upper plate portion of the guard body and the inclined plate portion of the tillage cover body are located on the same plane. The agricultural working machine according to claim 2, wherein the inclined upper plate portion of the guard body and the inclined plate portion of the tillage cover body overlap in a side view. The farm work machine according to any one of claims 1 to 3, wherein the tillage body support part is a chain case part located at an outer end part of the machine body.

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