JP2013078278A - Holder guard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holder guard capable of preventing abrasion of a claw holder part of a rotating shaft of an agricultural working machine.SOLUTION: The holder guard 51 includes a mounting part 52 detachably mounted to the claw holder part 33 of the rotating shaft 31. The mounting part 52 is provided with a soil-dropping part 53 for peeling off soil adhering to a soil adhesion part 50 from the soil adhesion part 50. The mounting part 52 includes a first covering plate portion 61, which is a front covering plate part for covering a front surface in a rotating direction of the claw holder part 33. The mounting part 52 can be mounted to the claw holder part 33 along with a claw 35 by a bolt 36 and a nut 37 for mounting a claw.

Description

  The present invention relates to a holder guard for preventing wear of a claw holder portion of a rotary shaft of an agricultural machine.

  2. Description of the Related Art Conventionally, for example, a pad coater that is an agricultural working machine described in Patent Document 1 is known.

  This conventional paddy coater is connected to a traveling vehicle such as a tractor, a filling body (rotary) that is rotatably mounted on this machine and cultivates the soil of rice fields and marshes, and can be rotated to the machine. And a pre-treatment body for pre-treating the upper surface of the main fence in front of the embankment body.

  As shown in FIG. 19, the embankment body 1 of this coater is provided with a rotation shaft 2, and a nail (cultivation claw) 4 for embedding can be attached to and detached from each nail holder portion 3 of the rotation shaft 2. It is attached. The plurality of claws 4 are covered with a cover member (rotary cover) 5 having a predetermined shape.

JP 2010-45995 A

  However, in the case of the above-described conventional coater (agricultural machine), for example, the soil adhering to the inner surface of the cover member 5 comes into contact with the plate portion 3a of the nail holder portion 3 of the rotating shaft 2, so that the nail holder portion 3 The plate portion 3a may be worn by rubbing with soil.

  This invention is made | formed in view of such a point, and it aims at providing the holder guard which can prevent abrasion of the nail | claw holder part of the rotating shaft of an agricultural machine.

  The holder guard according to claim 1 is a holder guard for preventing wear of the claw holder portion of the rotary shaft of the agricultural machine, and is attached to the soil adhering portion and an attaching portion detachably attached to the claw holder portion. And a soil dropping part that peels off the soil from the soil adhesion part.

  The holder guard according to a second aspect is the holder guard according to the first aspect, wherein the attachment portion has a front cover plate portion covering the front surface in the rotation direction of the claw holder portion.

  The holder guard according to claim 3 is the holder guard according to claim 1 or 2, wherein the attachment portion is attached to the nail holder portion together with the nail by a bolt and a nut for attaching the nail.

  According to a fourth aspect of the present invention, there is provided the holder guard according to any one of the first to third aspects, wherein the holder guard includes a hole for soil passage through which the soil separated from the soil adhesion portion by the soil dropping portion passes.

  According to a fifth aspect of the present invention, in the holder guard according to the fourth aspect, the earth dropping portion is formed in a U shape.

  The holder guard according to claim 6 is the holder guard according to claim 5, wherein the U-shaped earth dropping portion includes a pair of longitudinal portions positioned along the axial direction of the rotating shaft of the agricultural work machine, It has a connection part which connects the edge parts of a longitudinal part.

  According to the present invention, the agricultural machine is provided with the attachment part that is detachably attached to the claw holder part of the rotary shaft of the agricultural machine and the earthing part that peels the soil attached to the soil adhesion part from the soil adhesion part. It is possible to prevent the claw holder portion of the rotating shaft from being worn.

It is a top view at the time of advance operation | work of the paddy machine which is an agricultural working machine provided with the holder guard which concerns on the 1st Embodiment of this invention. It is a top view at the time of the non-working of the same plastering machine. It is a top view at the time of reverse operation | work of the same lid coating machine. It is a fragmentary top view of a dregs coater same as the above. It is a principal part perspective view of a drape coater same as the above. It is a top view of the holder guard with which the same drapery machine was equipped. It is a perspective view of a holder guard same as the above. It is a top view of the holder guard which concerns on the 2nd Embodiment of this invention. It is a perspective view of a holder guard same as the above. It is a top view of the holder guard which concerns on the 3rd Embodiment of this invention. It is a front view of a holder guard same as the above. It is a top view of the holder guard which concerns on the 4th Embodiment of this invention. It is a perspective view of a holder guard same as the above. It is a perspective view of the holder guard which concerns on the 5th Embodiment of this invention. It is a perspective view of the holder guard which concerns on the 6th Embodiment of this invention. It is a top view of the holder guard which concerns on the 7th Embodiment of this invention. It is a perspective view of a holder guard same as the above. It is a figure which shows the tilling working machine which is a farm working machine provided with the holder guard which concerns on the 1st Embodiment of this invention. It is a partial top view of the conventional glazing machine.

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

  In FIG. 1 to FIG. 3, 11 is a basket coater which is an agricultural working machine, and this basket coater 11 is connected to the rear part of a tractor which is a traveling vehicle (not shown).

  During the forward operation, the glazing machine 11 is connected to the rear portion of the tractor and performs the glazing operation (foam repairing operation) while moving in the traveling direction (forward) by the forward traveling of the tractor (see FIG. 1). ). In addition, the paddle coater 11 is connected to the rear part of the tractor during the reverse operation at the corner of the field (back operation) and moves backward (backward) by the reverse travel (back travel) of the tractor. The paintwork is performed while moving toward the head (see FIG. 3). It should be noted that the padding machine 11 is stored so as to be positioned behind the tractor in a state of being connected to the rear portion of the tractor during non-operation such as when moving from one field to another field (FIG. 2). reference).

  As shown in FIG. 1 to FIG. 3 and the like, the wrinkle coater 11 has a machine body 12 that is detachably connected to the rear part of the tractor, and is rotatably provided in the machine body 12 in a predetermined direction (the rotation direction shown in FIG. 5). The embankment (rotary) 13 that cultivates and raises the soil of the paddy field and the former paddy while rotating in a rotating manner, and the embankment by the embankment body 13 while rotating in a predetermined direction behind the embankment 13 that is rotatably provided in the body 12 Pre-process the upper surface of the main fence in front of the embankment 13 in the direction of travel, that is, for example, to remove weeds. An upper surface cutting body 15 which is a pretreatment body for plowing and cutting the soil on the upper surface of the ridge is provided.

  The fuselage 12 is detachably connected to the rear part of the tractor, and is movable with respect to the fixed machine frame 16. The machine body 12 is in the forward working state shown in FIG. 1, the non-working state shown in FIG. And the cylinders 18 and 19 as drive means for moving the movable machine frame 17 with respect to the fixed machine frame 16. By the movable machine frame 17, the embankment body 13, the ridge forming body 14, and the upper surface cutting body 15 are rotatably supported.

  The fixed machine frame 16 has a shaft support portion 20, and the input shaft 21 is rotatably supported by the shaft support portion 20. The PTO shaft of the tractor is connected to the input shaft 21 via a joint or the like. Note that the embankment body 13, the ridge forming body 14, and the upper surface cutting body 15 are driven to rotate in a predetermined direction by power from the input shaft 21 side.

  The ridge forming body 14 is a rotary shaft 23 rotatably supported by the movable machine frame 17 of the airframe 12 and compacts the embankment by the embankment body 13 behind the embankment body 13 while rotating together with the rotary shaft 23. The side surface forming member (side surface roller) 24 having a frustoconical shape that forms an inclined side surface and a rotating shaft 23 while rotating with the rotating shaft 23, the embankment by the embankment body 13 is compacted behind the embankment body 13 and leveled. And a cylindrical ridge upper surface forming member (upper surface roller) 25 for forming a cylindrical ridge upper surface.

  The upper surface cutting body 15 includes a rotary shaft 28 rotatably supported by the shaft support portion 27 of the movable machine frame 17 of the machine body 12 and a front side of the embankment body 13 while rotating together with the rotary shaft 28. It has a plurality of upper surface shaving claws 29 for pretreating the upper surface of the heel.

  As shown in FIGS. 4 to 7 and the like, the embankment body 13 is rotatably supported by a cylindrical shaft support part (boss part) 30 of the movable machine frame 17 of the machine body 12 and is horizontally supported. A rotating shaft (rotating shaft with claw holder portion) 31 that rotates in a predetermined direction (rotating direction shown in FIG. 5) around the rotation center axis X in the front-rear direction by power from the side, and the surface while rotating together with the rotating shaft 31 And a plurality of claws (cultivation claws) 35 that cultivate the soil of the marshal and raise it on the marshal.

  Each claw 35 is, for example, a well-known one and has a curved and elongated plate shape, and a bolt hole is formed at the base end. The plurality of claws 35 are covered with a cover member (rotary cover) 34 having a predetermined shape that guides and guides the soil cut by the claws 35 toward the base and prevents the soil from scattering. Yes. 6 and 7 are diagrams in which the description of the claw 35 is omitted (the same applies to FIG. 8 and the like described later).

  The rotary shaft 31 is integrally formed by welding or the like at a plurality of axially spaced locations on the outer peripheral surface of the cylindrical surface of the rotary shaft main body 32, which is a round shaft having a circular cross section. And a cylindrical nail holder portion 33 that is fixed. The rotary shaft main body 32 and the claw holder 33 may be provided integrally.

  A claw 35 that is a predetermined shape of a claw for cultivating soil is detachably attached to each claw holder portion 33 by a claw attachment bolt 36 and a nut 37 that are claw attachment means. The bolt 36 includes, for example, a hexagonal head portion 36a and a round shaft portion 36b having a thread groove formed on the outer peripheral surface.

  Here, the claw holder portion 33 has a rectangular cylindrical shape that opens toward the outside in the radial direction of the rotation shaft 31 (a direction orthogonal to the rotation center axis X) by the rectangular front end surface opening 40. . In other words, the claw holder portion 33 includes a first plate portion (rotation direction front plate) 41 on the front side in the rotation direction and a second plate portion (rotation direction rear plate) 42 on the rear side in the rotation direction that is spaced apart from the first plate portion 41. A first plate portion 41 and a second plate portion 42, a third plate portion 43 for connecting ends on one side (the shaft support portion 30 side), and a third plate portion 43 spaced apart from the third plate portion 43 and facing the first. It has the 4th board part 44 which connects the edge parts of the other side (opposite side to the shaft support shaft part 30 side) of the board part 41 and the 2nd board part 42. In addition, a hexagonal head hole 45 is formed in the third plate portion 43, and a head 36a of a bolt 36 is removably fitted into the head hole 45. A circular shaft hole 46 is formed in the fourth plate portion 44, and the shaft 36 b of the bolt 36 is inserted into the shaft hole 46.

  Of the plurality of claw holder portions 33 included in the rotation shaft 31, for example, two claw holder portions 33 positioned at the end of the rotation shaft 31 on the shaft support portion 30 side include claw holder portions 33 formed by contact with soil. A holder guard 51 for preventing wear is attached in a detachable manner together with the claws 35 by means of bolts 36 and nuts 37 for attaching the claws.

  The holder guard 51 includes a mounting portion 52 that is detachably attached to the claw holder portion 33 of the rotating shaft 31 together with the claw 35 by a bolt 36 and a nut 37, and is fixedly provided on the front side in the rotation direction of the mounting portion 52. The earth dropping part 53 which peels off the soil adhering to the earth adhering part 50 of the frame 17 by scraping off from the earth adhering part 50, and the rectangular shape through which the earth separated from the earth adhering part 50 by the earth dropping part 53 passes. And a soil passage hole 54, which is a space for escaping soil.

  The soil adhering portion 50 is a shaft that rotatably supports the substantially semicircular plate portion (wall surface portion facing the claw) 55 of the cover member 34 that covers the periphery of the claw 35 and the rotating shaft main body portion 32 of the rotating shaft 31. A cylindrical outer peripheral surface portion 56 of the support portion 30 is configured. Note that the shaft support portion 30 is configured by, for example, a ball bearing or the like.

  The plate-like plate portion (claw-opposing plate portion) 55 of the cover member 34 is opposed to and close to the claw 35 attached to the claw holder portion 33 located at the end of the rotating shaft 31 on the shaft support portion 30 side. ing. A curved plate portion 57 is attached to an upper edge portion of the plate portion 55, and an opposing plate portion 58 that is spaced apart from the plate portion 55 is attached to the curved plate portion 57. Further, a flange portion 59 projects from the end portion of the cylindrical outer peripheral surface portion 56 of the shaft support portion 30, and this flange portion 59 is attached to the attached portion with a mounting tool (not shown) such as a bolt. ing.

  The attachment portion 52 covers, for example, all four side surfaces of the claw holder portion 33, is formed in a quadrangular cylindrical shape having openings on both end surfaces, and is fitted on the outer peripheral side of the claw holder portion 33. The mounting portion 52 is a rectangular plate-shaped first cover plate portion 61 that covers the outer surface of the first plate portion 41 of the claw holder portion 33 and a rectangular plate shape that covers the outer surface of the second plate portion 42 of the claw holder portion 33. A rectangular plate covering the second cover plate portion 62, a rectangular plate-shaped third cover plate portion 63 covering the outer surface of the third plate portion 43 of the claw holder portion 33, and a fourth plate portion 44 of the claw holder portion 33. And a fourth cover plate portion 64 having a shape.

  The first cover plate portion 61 and the third cover plate portion 63 are configured by a single bent plate member 68 that is bent at a right angle at an intermediate position so as to have an L-shaped cross section. Similarly, the second cover plate portion 62 and the fourth cover plate portion 64 are configured by a single bent plate member 69 bent at a right angle at an intermediate position so as to have an L-shaped cross section. Yes.

  The first cover plate portion 61 of the attachment portion 52 is a front cover plate portion that covers the entire front surface of the claw holder portion 33 in the rotational direction. Since the entire front surface in the rotational direction of the claw holder portion 33 is covered with the first cover plate portion 61 which is the front surface cover plate portion, the soil does not directly contact the claw holder portion 33 when the rotary shaft 31 rotates. .

  Further, the third cover plate portion 63 is positioned in parallel to be separated from and opposed to the plate portion 55 of the soil adhesion portion 50. The third cover plate portion 63 is formed with a circular hole 65 large enough to allow the head 36a of the bolt 36 to pass therethrough. A circular shaft hole 66 is formed in the fourth cover plate portion 64, and the shaft 36 b of the bolt 36 is inserted into the shaft hole 66.

  The head portion 36a is non-rotatably inserted into the head hole portion 45 of the third plate portion 43 of the claw holder portion 33, and the shaft portion 36b is a bolt hole portion (not shown) of the claw 35 and the claw holder portion. The nut 37 is screwed onto the bolt 36 inserted into the shaft hole 46 of the fourth plate portion 44 of 33 and the shaft hole 66 of the fourth cover plate 64 of the mounting portion 52. By being tightened, the base end portion (attachment portion) of the claw 35 and the attachment portion 52 of the holder guard 51 are attached to the claw holder portion 33 by fastening together. A washer 38 is interposed between the nut 37 and the fourth cover plate portion 64.

  In addition, the attachment portion 52 has a wear portion (nail holder portion wear prevention portion) 70 that wears in place of the nail holder portion 33 due to contact with soil when the rotary shaft 31 rotates. The wear portion 70 is configured by the end portion of the first cover plate portion 61 on the third cover plate portion 63 side (excluding the portion covered by the earth dropping portion 53). That is, the wear portion 70 is formed by the bent portion 68 a of the bent plate member 68. Since the attachment portion 52 has the wear portion 70, the soil does not directly contact the third plate portion 43 of the claw holder portion 33 when the rotary shaft 31 rotates. In FIG. 7, the shaded portion is the worn portion 70.

  The earth dropping part 53 is comprised by the elongate flat plate member, for example, and is formed in U shape (a substantially U shape is included). The earthing portion 53 is fixed so that a part thereof overlaps the outer surface of the first covering plate portion 61 of the mounting portion 52 (the front surface in the rotation direction of the claw holder portion 33), and the first covering plate of the mounting portion 52 Projecting from the portion 61 toward the plate portion 55 side of the cover member 34. The wear portion 70 of the mounting portion 52 and the earth dropping portion 53 define a substantially square through hole 54 for earth passage.

  The U-shaped earth dropping portion 53 includes a pair of elongated plate-like portions 71 and 72 that are positioned along the axial direction (rotation center axis X) of the rotation shaft 31 of the embankment 13, and these It is composed of an elongated flat plate-like connecting portion 73 that connects the end portions of both the long portions 71 and 72. The base end portions of both the longitudinal portions 71 and 72 are fixed to the outer surface of the first cover plate portion 61 of the attachment portion 52.

  The width dimension (length in the short direction) of the long portion 71 located on the distal end side of the nail holder portion 33 is the width dimension (length in the short direction) of the long portion 72 located on the proximal end side of the nail holder portion 33. It is larger than the width dimension of the connecting portion 73 and is the same as the width dimension (the length dimension in the short direction).

  The reason why the longitudinal portion 71 located on the distal end side of the claw holder portion 33 is made wider than the longitudinal portion 72 located on the proximal end side of the claw holder portion 33 is that the claw 35 faces the plate portion 55 side. Therefore, the soil adhering to the plate portion 55 is gradually pushed into the rotating shaft 31 side, and the soil must always be scraped off by the long portion 71, and the long portion 71 is long. This is because it is easier to wear than the portion 72.

  In addition, for example, the width dimension of the longitudinal part 72 is larger than the width dimension of the longitudinal part 71 and the width dimension of the connecting part 73 is the same, and the width dimension of each part 71, 72, 73 is the same. A configuration or the like may be used.

  The connecting portion 73 comes into contact with the soil adhered to the plate portion (cover plate portion) 55 of the cover member 34 when the rotating shaft 31 rotates, and peels the soil from the plate portion 55. That is, the connecting portion 73 scrapes off the adhered soil on the inner surface of the plate portion 55. Further, when the rotary shaft 31 rotates, the longitudinal portion 72 on the shaft support portion 30 side comes into contact with the soil attached to the outer peripheral surface portion 56 of the shaft support portion 30 and peels the soil from the outer peripheral surface portion 56. That is, the longitudinal portion 72 scrapes off the adhered soil on the outer peripheral surface portion 56.

  Next, the operation of the glazing machine 11 will be described.

  When the coater 11 moves in the direction of travel as the tractor moves forward, the top surface of the main paddle is pre-processed by the upper surface grinder 15 and the paddy and the main paddy soil are plowed and raised by the embankment 13 Then, the embankment 14 compacts the embankment to form a new soot.

  At this time, the rotation shaft 31 of the embankment body 13 rotates together with the claws 35 and the holder guard 51 in a predetermined rotation direction.

  Then, the soil dropping portion 53 of the holder guard 51 scrapes and removes the soil adhering to the soil adhering portion 50 composed of the plate portion 55 and the outer peripheral surface portion 56 from the soil adhering portion 50. It falls onto the field through the through hole 54.

  That is, the connecting portion 73 of the soil dropping portion 53 scrapes off the attached soil of the plate portion 55 of the soil attaching portion 50, and the longitudinal portion 72 of the soil dropping portion 53 removes the attached soil of the outer peripheral surface portion 56 of the soil attaching portion 50. Scratch off. As a result, unlike the conventional case shown in FIG. 19, the soil does not adhere to the soil adhering portion 50 and grow and solidify.

  And, according to such a holder guard 51, a mounting portion 52 that is detachably attached to the claw holder portion 33 of the rotary shaft 31 of the embankment body 13 of the coater 11, and a soil drop provided on the mounting portion 52 Since the portion 53 is provided, wear of the claw holder portion 33 of the rotating shaft 31 can be prevented. Therefore, it is possible to prevent a situation in which the expensive rotating shaft 31 has to be replaced due to wear of the claw holder portion 33.

  Further, since the attachment portion 52 has the first cover plate portion 61 that is a front cover plate portion that covers the front surface of the claw holder portion 33 in the rotation direction, the soil does not directly contact the claw holder portion 33 when the rotary shaft 31 rotates. Further, it is possible to appropriately prevent the claw holder 33 from being worn.

  Furthermore, since the mounting portion 52 can be attached to the claw holder portion 33 together with the claw 35 with the nail mounting bolt 36 and the nut 37, the mounting portion 52 is attached to the claw holder portion 33 with a mounting member dedicated to the holder guard. Thus, the number of parts can be reduced and the cost can be reduced.

  In addition, since a soil passage hole 54 through which the soil separated from the soil adhering portion 50 passes is provided at the soil dropping portion 53, the flow of the soil becomes smooth, the rotational resistance of the rotating shaft 31 decreases, and energy saving is achieved. be able to.

  Further, since the earth dropping portion 53 is formed in a U-shape, sufficient strength can be secured, and wear of the claw holder portion 33 can be prevented appropriately and effectively.

  Further, even if the worn portion 70 of the mounting portion 52 is worn and needs to be replaced, the holder guard 51 can be easily replaced, and the replacement cost is lower than that when the rotating shaft 31 itself is replaced.

  Further, the holder guard 51 can prevent foreign matters such as grass from wrapping around the outer periphery of the shaft support 30 and soil from entering the shaft support 30.

  8 and 9 show a second embodiment of the present invention.

  As shown in FIGS. 8 and 9, the attachment portion 52 of the holder guard 51 may be U-shaped in plan view and may not have the second cover plate portion 62. In FIG. 9, the shaded portion is the worn portion 70.

  10 and 11 show a third embodiment of the present invention.

  As shown in FIGS. 10 and 11, the attachment portion 52 of the holder guard 51 may be L-shaped in plan view and may not have the second cover plate portion 62 and the third cover plate portion 63. That is, the mounting portion 52 includes at least a fourth cover plate portion 64 that is a mounting plate portion that is clamped between the nut 37 and the claw holder portion 33 by tightening the nut 37 with respect to the bolt 36, and the fourth cover plate portion. What is necessary is just to have the 1st cover board part 61 which is the front cover board part which is provided in 64 and covers the outer surface (front direction of rotation of the nail holder part 33) of the 1st board part 41 of the nail holder part 33. Further, the earth dropping portion 53 may be integrally connected so as to be continuous with the side edge of the first cover plate portion 61.

  The holder guard 51 according to the third embodiment is composed of only one bent plate member bent at a right angle at an intermediate position, and can be manufactured at a very low cost. In FIG. 11, the shaded portion is the worn portion 70.

  12 and 13 show a fourth embodiment of the present invention.

  As shown in FIG. 12 and FIG. 13, the earth dropping portion 53 of the holder guard 51 may be formed of a round bar member bent in a U shape instead of a flat plate member. In FIG. 13, the hatched portion is the worn portion 70. For example, although not shown, the earth dropping portion 53 may be formed of a square bar member. Moreover, it may be an L-shaped earth dropping portion 53 as in the fifth embodiment shown in FIG. 14, or may be a straight straight earth dropping portion 53 as in the sixth embodiment shown in FIG. .

  16 and 17 show a seventh embodiment of the present invention.

  As shown in FIGS. 16 and 17, the attachment portion 52 of the holder guard 51 may not have the second cover plate portion 62 and the fourth cover plate portion 64. In FIG. 17, the shaded portion is the worn portion 70. 16 and FIG. 17 is different from that shown in FIG. 6 in that a hexagonal head hole 45 is formed in the fourth plate portion 44 and the third plate portion 43 is formed. A circular hole 46 for a shaft portion is formed.

  In each of the above embodiments, the case where the holder guard 51 is attached to the claw holder portion 33 of the rotary shaft 31 of the embankment body 13 of the coater 11 has been described. For example, as shown in FIG. It can also be used by being attached to the claw holder portion 33 of the rotating shaft 31 of a certain tillage working machine 81.

  This tillage work machine (rotary work machine) 81 is rotatably supported by a machine body 82 detachably connected to the rear part of the tractor, and a chain case part 83 and a bracket part 84 of the machine body 82 from the input shaft 86 side. A cultivating body 85 that performs a cultivating operation while rotating in a predetermined direction with power, and a leveling body (not shown) that performs a grading operation behind the cultivating body 85 are provided.

  The cultivating body 85 includes a rotating shaft (rotating shaft with a claw holder) 31 that rotates in a predetermined rotating direction by power from the input shaft 86 side, and a plurality of tillers that cultivate soil on the field while rotating together with the rotating shaft 31. It has a book claw (cultivation claw) 35.

  One end of the rotating shaft 31 is rotatably supported by a shaft support portion (boss portion) 30 below the chain case portion 83, and the other end portion of the rotating shaft 31 is a shaft support portion (boss portion) below the bracket portion 84. ) It is supported rotatably through 30.

  Of the plurality of claw holder portions 33 of the rotating shaft 31, for example, the holder guard 51 is detachably attached to the claw holder portions 33 located at both left and right ends of the rotating shaft 31 together with the claws 35 by bolts 36 and nuts 37. ing.

  The left holder guard 51 peels off the soil adhering to the soil adhering portion 50 formed by the inner plate portion 83a of the chain case portion 83 and the outer peripheral surface portion 56 of the left shaft support portion 30 from the soil adhering portion 50. It has a soil drop part 53. Further, the right holder guard 51 is a soil drop portion 53 that peels off the soil adhering to the soil adhering portion 50 constituted by the bracket portion 84 and the outer peripheral surface portion 56 of the right shaft support portion 30 from the soil adhering portion 50. have.

  Even when the holder guard 51 is used in such a tilling work machine 81, it is possible to prevent the claw holder portion 33 of the rotating shaft 31 from being worn, and therefore the expensive rotating shaft 31 must be replaced by the wear of the claw holder portion 33. It is possible to prevent a situation that must be done. Although not shown, the present invention can be applied to various farming machines such as a plowing machine or a ditching machine in addition to the hull coater 11 and the tilling machine 81.

  Each embodiment may be appropriately combined.

  Further, in any of the embodiments, the structure is not limited to the structure in which the earth dropping portion 53 is integrally fixed to the attachment portion 52 by welding or the like. For example, the attachment portion 52 and the earth dropping portion 53 are pressed. The structure etc. which were integrally formed by may be sufficient.

  Further, for example, an earthing portion attaching hole which is an attaching portion may be formed in the attaching portion 52, and the earthing portion 53 may be detachably attached to the earthing portion attaching hole.

11 Agricultural machine
31 Rotating shaft
33 Nail holder
35 nails
36 Claw mounting bolts
37 Nut for claw mounting
50 Soil adhesion part
51 Holder guard
52 Mounting part
53 Landfall
54 Hole for soiling
61 First cover plate part which is the front cover plate part
71, 72 Longitudinal part
73 Connecting part
81 Tillage work machine

Claims (6)

A holder guard for preventing wear of the claw holder part of the rotary shaft of the farm work machine,
An attachment part detachably attached to the claw holder part;
A holder guard, comprising: a soil drop portion that peels off the soil adhered to the soil adhesion portion. The holder guard according to claim 1, wherein the attachment portion includes a front cover plate portion that covers a front surface in the rotation direction of the claw holder portion. The holder guard according to claim 1 or 2, wherein the attachment portion is attached to the claw holder portion together with the claw by a claw attachment bolt and a nut. The holder guard according to any one of claims 1 to 3, further comprising a hole for soil passage through which the soil peeled from the soil adhesion portion by the soil dropping portion passes. The holder guard according to claim 4, wherein the earthing portion is formed in a U-shape. The U-shaped erosion section
A pair of longitudinal portions located along the axial direction of the rotation axis of the agricultural machine;
The holder guard according to claim 5, further comprising a connecting portion that connects the ends of the two longitudinal portions.

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