JP2009225758A - Farm implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide farm implement which can improve clod-breaking property. <P>SOLUTION: This farm implement 1 includes a central working portion 2 and extended work portions 3 turnable with respect to central working portion 2. A tilling body 7 of the central working portion 2 has a rotation shaft 21, tilling tines 23 attached to the rotation shaft 21, and one side engaging members 22. An extended tilling body 32 of each extended work portion 3 has a rotation shaft 41, tilling tines 43 attached to the rotation shaft 41, and other side engaging members 42. Each of extended machine frames 31 has a bearing plate 39 projected from an inside plate 35 onto an outside plate 36 side, supporting the axial direction end of the rotation shaft 41, and covering the outer peripheral side of the other side engaging members 42. The tip portion 43a of the tilling tine 43 closest to the bearing plate 39 is moved on the outer peripheral side position of the bearing plate 39. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an agricultural machine capable of improving the crushed property.

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

  This conventional agricultural machine has a main body connected to a tractor that is a traveling vehicle, and left and right of the main body that can be rotated to be selectively switched between a folding non-working state and a unfolding working state. And a folding work unit.

The main body includes a machine body, a rotary shaft that is rotatably supported by the machine body, a plurality of tilling claws attached to the rotary shaft, and a one-side engaging body (central side) attached to an axial end of the rotary shaft. And a tilling body having a clutch pawl). In addition, the folding work unit includes a folding machine body rotatably attached to the machine body, a rotary shaft rotatably supported by the folding machine body, a plurality of tilling claws attached to the rotary shaft, and a rotation A folding tiller having a second engagement body (side clutch pawl) that is attached to the axial end of the shaft and engages with the first engagement body.
JP 2007-68418 A (FIGS. 4 and 5)

  And in recent years, in a foldable agricultural work machine comprising such a main body part and a folding work part and having engaging bodies that engage with each other when the folding work part is in the unfolding work state, There is a demand for an agricultural machine that is less susceptible to cracking and that can improve the crushed property.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can aim at the improvement of a crushed property, and it is hard to produce a residual tilling part.

  The agricultural machine according to claim 1 is a main body connected to the traveling vehicle, and the main body is rotatably provided, and the folding is selectively switched between the folding non-working state and the unfolding working state by the rotation. A working unit, and the main body unit is provided on the machine body, a rotary shaft rotatably supported by the machine body, a plurality of tilling claws attached to the rotary shaft, and an axial end of the rotary shaft. And a foldable body having a foldable body, a rotary shaft supported rotatably by the foldable machine body, and a plurality of rotary shafts attached to the rotary shaft. And a foldable tillage body having an other side engaging body that is attached to an axial end of the rotating shaft and engages with the one side engaging body when the folding working portion is in a deployed operation state, The folding machine includes an inner plate and an outer plate that are spaced apart from each other, A bearing plate provided on the inner plate so as to project toward the outer plate, supporting the axial end of the rotary shaft of the folding tiller, and covering the outer peripheral side of the other engagement body. And the front-end | tip part of the at least 1 tilling nail in the said several tilling nail of the said folding tillage body moves the outer peripheral side position of the said bearing plate.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the bearing plate of the folding machine body covers the entire outer peripheral side of the other engagement body.

  According to the invention which concerns on Claim 1, a folding machine body is provided in the inner side board and the outer side board which are mutually spaced apart, and is provided in the inner side board so that it protruded toward the outer side board side. A bearing plate that supports the end portion and covers the outer peripheral side of the other engaging body, and the tip of at least one of the tilling claws of the folding tillage body moves the outer peripheral side position of the bearing plate Therefore, compared to the conventional configuration, the remaining tillage portion is less likely to be generated, and it is possible to improve the crushed property, and at least one tip of the tilling claw is engaged with the one side engaging body and the other. Since the position of the outer peripheral side of the side engagement body is moved, the one side engagement body and the other side engagement body engaged with each other do not involve pebbles or the like in the soil, and durability can be improved.

  According to the invention according to claim 2, since the bearing plate of the folding machine body is configured to cover the entire outer peripheral side of the other side engaging body, the one side engaging body and the other side engaging body can be appropriately protected, The durability can be further improved.

  An embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.

  1 and 2, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to the rear portion of a tractor (not shown), which is a traveling vehicle, for example, and performs a scraping operation while moving forward on an agricultural field by traveling of the tractor. This is a three-fold folding type scraper.

  As shown in FIGS. 1 to 3, the farm work machine 1 is connected to a three-point link (work machine lifting support device) at the rear of the tractor, and is a longitudinally long main body that performs tillage work by power from the tractor. A central working unit 2 is provided.

  Further, the agricultural working machine 1 is provided at both ends in the left and right direction of the central working unit 2 so as to be pivotable in the vertical direction about a folding shaft 4 in the front-rear direction that is a pivotal fulcrum. An extension work unit 3 is provided which is selectively switched between a work state and a deployment work state, and is a left and right folding work unit having a left and right longitudinal direction for performing a tilling work by power from the central work unit 2 in the deployment work state. Yes. The two extension working parts 3 are symmetrically configured to be rotatable with respect to the central work part 2, and each extension work part 3 has a predetermined angle in one direction (deployment direction) around the folding shaft 4. For example, by rotating approximately 180 degrees, the unfolded working state is located outside the central working unit 2, and a predetermined angle in the other direction (folding direction) around the folding shaft 4 (for example, approximately 180 degrees). By the movement, a folding non-working state located above the central working unit 2 is obtained. Note that the rotation angle of the extension working unit 3 is other than 180 degrees, and may be 150 degrees, 90 degrees, or the like.

  The central working unit 2 is a left-right longitudinal body 6 connected to a three-point link at the rear of the tractor, and a tiller that is rotatably provided in the body 6 and rotates in a predetermined direction by power from the tractor. It has a body 7 and a leveling body 8 that is provided at the rear end of the body 6 so as to be rotatable up and down and performs leveling work behind the tillage body 7.

  The airframe 6 has a cylindrical frame portion 11 that is elongated in the left-right direction. A gear box portion 12 is connected to the longitudinal center portion of the frame portion 11, and the input shaft 13 faces forward from the gear box portion 12. Protruding. The input shaft 13 is connected to a PTO shaft (not shown) of the tractor via a universal joint, a transmission shaft, and the like.

  Further, an upper portion of a transmission case portion 15 such as a chain case serving as a shaft support portion is attached to one end portion in the longitudinal direction of the frame portion 11, and the transmission case portion 15 is opposed to the other end portion in the longitudinal direction of the frame portion 11 so as to be separated from each other. An upper portion of a plate-like bracket portion 16 that is a shaft support portion is attached. Further, the machine body 6 has a substantially arcuate plate-shaped tilling cover portion 17, and a front end portion of the leveling body 8 is attached to a rear end portion of the tilling cover portion 17.

  The cultivator 7 is rotatably supported by the lower part of the transmission case 15 and the lower part of the bracket part 16 that are spaced apart from each other, and is connected to the input shaft and accommodated in the frame 11 and the transmission case 15 (not shown). It has a rotating shaft 21 that is a tilling shaft in the left-right direction that rotates by receiving power from the transmission means.

  That is, for example, one end portion in the axial direction of the rotating shaft 21 is rotatably supported at the lower portion of the transmission case portion 15, and protrudes outward from the outer surface of the transmission case portion 15 among the one end portion in the axial direction of the rotating shaft 21. One side engaging body (center side clutch pawl) 22 is attached to the part. Similarly, the other axial end portion of the rotating shaft 21 is rotatably supported at the lower portion of the bracket portion 16, and the other axial end portion of the rotating shaft 21 faces outward from the outer surface of the bracket portion 16. One side engaging body (center side clutch pawl) 22 is attached to the protruding portion. The one side engagement body 22 has a plurality of convex engagement portions 22a arranged in the circumferential direction.

  In addition, a plurality of tilling claws 23 that rotate together with the rotating shaft 21 to perform tilling work are attached to the claw holder portion 21a of the rotating shaft 21. The plurality of tilling claws 23 are substantially square-shaped when viewed from the front, and are arranged at equal intervals from one end side to the other end side of the rotating shaft 21 in the axial direction. The tip 23a of the tilling claw 23 closest to the transmission case 15 among the plurality of tilling claws 23 moves near the inner surface of the transmission case 15 when the rotating shaft 21 rotates, and the bracket among the plurality of tilling claws 23 The tip 23 a of the tilling claw 23 closest to the portion 16 moves in the vicinity of the inner surface of the bracket portion 16 when the rotary shaft 21 rotates.

  As shown in FIG. 2, the leveling body 8 includes a first leveling plate (level plate) 25 having a front end portion that is pivotally attached to a rear end portion of a tillage cover portion 17 of the body 6. Have. A front end portion of a second leveling plate (rake) 26 that is longitudinal in the left-right direction is rotatably attached to the rear end portion of the first leveling plate 25.

  Further, the extension working part 3 is attached to both ends in the longitudinal direction of the frame part 11 of the machine body 6 of the central working part 2 via the folding shaft 4 so as to be rotatable in the vertical direction around the folding shaft 4. Extension body 31 that is a folded folding body, and a folding farm body that is rotatably provided on the extension body 31 and rotates in a predetermined direction by the power from the cultivation body 7 of the central working unit 2 to perform the cultivation work The cultivating body 32 and an extended leveling body 33 that is provided at the rear end of the extension body 31 so as to be vertically rotatable and that performs a leveling operation behind the extended cultivating body 32 are provided.

  The extension body 31 has a flat inner plate (inner cover side plate) 35 and a flat outer plate (outer is a bar side plate) 36 that are opposed to each other on both left and right sides. A substantially arc-plate-shaped tilling cover portion 37 is provided between the upper portions. As shown in FIG. 1, when the extension working part 3 is in the unfolding work state, the inner side plate 35 is a side plate that is in close proximity to the transmission case part 15 or the bracket part 16 of the central working part 2, and the outer side board 36 is agricultural work. It is a side plate located at the end of the machine 1 in the left-right direction.

  Further, the lower end edge of the inner plate 35 is formed in a substantially arc shape, and a bearing plate 39 is provided on the substantially arc-shaped lower end edge so as to project toward the outer plate 36 side. That is, the bearing plate 39 protrudes from the lower end edge of the inner plate 35 toward the outer plate 36 side and the lower side. Further, both end portions in the axial direction of the rotary shaft 41 that is the tilling shaft of the extended tillage body 32 are rotatably supported by the bearing plate 39 on the inner plate 35 side and the lower portion of the outer plate 36.

  That is, for example, one end portion in the axial direction of the rotating shaft 41 is rotatably supported by the bearing plate 39, and the outer surface of the bearing plate 39 among the one end portion in the axial direction of the rotating shaft 41 (the surface facing the central working portion 2). The other side engagement body (folding side clutch pawl) 42 is attached to a portion protruding outward from the outer side. The other side engaging body 42 is disposed at a position on the inner side of the inner side plate 35 and does not protrude from the inner side plate 35 toward the central working part side. The other side engaging body 42 engages with the one side engaging body 22 of the central working portion 2 when the extended working portion 3 is in the unfolding operation state, and power is supplied from the rotating shaft 21 of the tillage body 7 to the rotating shaft 41 of the extending tillage body 32. And has a plurality of convex engaging portions 42a that enter between the engaging portions 22a adjacent to each other in the circumferential direction of the one-side engaging body 22. Note that the other axial end of the rotating shaft 41 is rotatably supported by the lower portion of the outer plate 36.

  Here, as shown in FIG. 4, the bearing plate 39 includes a substantially arcuate plate-like mounting portion 45 that is attached to the lower end edge of the inner plate 35 of the extension machine body 31 with a bolt or the like, and the other side engagement body. A curved plate-like cover portion 46 covering a part of the outer peripheral side (radially outward portion) of 42, and a substantially circular annular support portion 47 that rotatably supports an axial end portion of the rotating shaft 41 via a bearing or the like. And have. The support portion 47 is formed with a substantially circular insertion hole 48 through which the rotation shaft 41 is inserted.

  A plurality of tilling claws 43 are attached to the claw holder portion 41a of the rotating shaft 41 to rotate with the rotating shaft 41 and perform a tilling operation when the extension working portion 3 is in the unfolding operation state. The plurality of tilling claws 43 are substantially square-shaped when viewed from the front, and are arranged at equal intervals from one end side to the other end side of the rotating shaft 41 in the axial direction.

  The tip 43a of the tilling claw 43 closest to the bearing plate (inner plate 35) 39 among the plurality of tilling claws 43, for example, the plurality of tilling claws 43, When the rotating shaft rotates in the unfolding operation state, the outer peripheral side position of the bearing plate 39, that is, the position near the outer peripheral side of the cover 46 is moved, and the position near the inner surface of the inner plate is moved. That is, as shown in FIG. 3, the tip 43a of the tilling claw 43 closest to the bearing plate 39 moves above the cover 46 of the bearing plate 39 and engages with each other. Move the position below. The tillage claw 43 attached to one end of the rotating shaft 41 in the axial direction and disposed closest to the bearing plate 39 has a different shape from the other tillage claws 43 and is different from the other tillage claws 43. The tip side is long.

  As shown in FIG. 2, the extended leveling body 33 is a first extension leveling plate (extended leveling plate) having a front end portion that is pivotally attached to a rear end portion of a tillage cover portion 37 of the extension body 31. Flat plate) 51. A front end portion of a second extension leveling plate (extension rake) 52 that is longitudinal in the left-right direction is rotatably attached to the rear end portion of the first extension leveling plate 51.

  The agricultural working machine 1 includes left and right rotation driving means (not shown) that rotate the extension working unit 3 about the folding shaft 4 in the vertical direction about 180 degrees with respect to the central working unit 2. Yes.

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

  For example, when working with the maximum work width, the left and right extension working parts 3 are rotated about the folding shaft 4 with respect to the central working part 2 by the power from the turning drive means. Switch to.

  When the extension work part 3 is in the unfolding work state, the one side engagement body 22 of the tillage body 7 of the central work part 2 and the other side engagement body 42 of the extension tillage body 32 of the extension work part 3 are engaged with each other. In this state, when the rotary shaft 21 of the cultivator 7 of the central working unit 2 rotates, the rotational force of the rotary shaft 21 is transmitted to the rotary shaft 41 of the extended cultivator 32 via both engaging bodies 22 and 42, and the extended cultivator is extended. The rotation shaft 41 of the body 32 rotates, and as a result, the cultivation work is performed by the cultivation claws 23 of the central working unit 2 and the cultivation claws 43 of the extended cultivation body 32. Further, the leveling work is performed by the leveling body 8 and the extended leveling body 33 at the rear position of the tillage body 7 and the rear position of the extension tillage body 32.

  For example, when working only with the central working unit 2 or when working with the central working unit 2 and either the left or right extension working unit 3, both the extension working unit 3 or the left and right working units are driven by the power from the rotation driving means. Any one of the extension working parts 3 is rotated with respect to the central working part 2 around the folding shaft 4 to switch to the folding non-working state.

  According to the agricultural machine 1, the extension machine 31 is provided on the inner plate 35, the outer plate 36, and the inner plate 35 that are spaced apart from each other so as to protrude toward the outer plate 36. 41 is a bearing plate 39 that supports the axial end of 41 and covers a part of the outer peripheral side of the other engagement body 42, and the tip 43a of the tilling claw 43 closest to the bearing plate 39 is a covering portion of the bearing plate 39. Since it is the structure which moves the outer peripheral side position of 46, compared with the conventional structure, it is hard to produce a residual tilling part and can aim at the improvement of crushed soil property.

  Further, the tip end portion 43a of the tilling claw 43 closest to the bearing plate 39 moves on the outer peripheral side position of the one side engaging body 22 and the other side engaging body 42 engaged with each other when the extension working portion 3 is in the unfolding operation state. It is avoided that pebbles and the like in the soil are directed to the one-side engaging body 22 and the other-side engaging body 42 that are engaged with each other, and both the engaging bodies 22 and 42 do not entrap pebbles and the like, thereby improving durability. Can do.

  In the above-described embodiment, the configuration in which the bearing plate 39 covers a part of the outer peripheral side of the other side engagement body 42 has been described. However, in order to further improve the durability, for example, as shown in FIGS. Further, the bearing plate 39 may cover the entire outer peripheral side of the other side engagement body 42.

  The bearing plate 39 shown in FIGS. 5 and 6 includes a substantially arcuate plate-shaped mounting portion 45 that is attached to the lower end edge of the inner plate 35 of the extension machine body 31 with a bolt or the like, and the outer peripheral side of the other side engagement body 42. A substantially frusto-conical cylindrical cover portion 46 that covers the entire outer periphery, that is, the outer peripheral side, and a substantially circular annular support portion 47 that rotatably supports the axial end portion of the rotary shaft 41 via a bearing or the like. A substantially circular insertion hole 48 through which the rotation shaft 41 is inserted is formed in the support portion 47.

  Further, for example, the configuration is not limited to a three-fold folding type configuration, and for example, a configuration including the central working unit 2 and one of the left and right extended working units 3 may be used.

It is a front view of the agricultural working machine which concerns on one embodiment of this invention. It is a rear view perspective view of a farm working machine same as the above. It is a principal part enlarged view of an agricultural working machine same as the above. It is a perspective view which shows the bearing plate of an agricultural working machine same as the above. It is a principal part enlarged view of the agricultural working machine which concerns on other embodiment of this invention. It is a perspective view which shows the bearing plate of an agricultural working machine same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Farm work machine 2 Central work part which is a main-body part 3 Extension work part which is a folding work part 6 Machine body 7 Tillage body
21 Rotation axis
22 One side engagement body
23 Tillage Claw
31 Extension body which is a folding body
32 Extension tillage body which is a folding tillage body
35 Inner plate
36 Outer plate
39 Bearing plate
41 Rotation axis
42 Other side engagement body
43 Tillage Claw
43a Tip

Claims (2)

A main body connected to the traveling vehicle;
The main body portion is provided so as to be rotatable, and includes a folding working portion that can be selectively switched between a folding non-working state and a deployment working state by turning,
The main body is
The aircraft,
A rotating shaft supported rotatably by the machine body, a plurality of tilling claws attached to the rotating shaft, and a tilling body having a one-side engaging body attached to an axial end of the rotating shaft,
The folding working unit is
Folding machine,
A rotating shaft that is rotatably supported by the folding machine, a plurality of tilling claws attached to the rotating shaft, and an unfolding state of the folding working unit that is attached to an axial end of the rotating shaft. A foldable tillage body having a second side engagement body that engages with the one side engagement body,
The folding machine is
An inner plate and an outer plate that are spaced apart from each other;
A bearing plate provided on the inner plate so as to project toward the outer plate, supporting the axial end of the rotary shaft of the folding tillage body and covering the outer peripheral side of the other engagement body; And
A farm working machine, wherein a tip end portion of at least one tilling claw among the plurality of tilling claws of the foldable tillage body moves an outer peripheral side position of the bearing plate. The agricultural working machine according to claim 1, wherein the bearing plate of the folding machine body covers the entire outer peripheral side of the other engagement body.

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