JP2017118845A - Agricultural implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agricultural implement capable of attaching easily winding prevention means.SOLUTION: An agricultural implement 1 includes a machine body 2 connected to a rear part of a tractor. A rotary shaft body 21 of tillage means 11 is supported by a shaft support part of the machine body 2. Winding prevention means 25 for preventing winding of miscellaneous things around a shaft support part of the machine body 2 is fitted on a flange part of the rotary shaft body 21. The winding prevention means 25 has a fitting body 41 and a winding prevention body 42 which are each different body mutually.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a farm work machine to which a winding preventing means can be easily attached.

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

  The conventional agricultural machine has a machine body having a shaft support portion, a rotary shaft body having a flange portion supported by the shaft support portion of the machine body, and a shaft support of the machine body attached to the flange portion of the rotary shaft body. And a wrapping preventing means for preventing wrapping of miscellaneous matter around the portion.

JP-A-2005-304403

  And in the agricultural machine provided with a winding prevention means, what can attach a winding prevention means easily is calculated | required.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can attach a winding prevention means easily.

  The agricultural machine according to claim 1 is a machine body having a shaft support portion, a rotary shaft body supported by the shaft support portion and having a flange portion, and attached to the flange portion, and miscellaneous matter to the shaft support portion. A winding preventing means for preventing the winding from being wound, the winding preventing means being attached to the flange portion and having a screwing hole portion, and a screw of the screwing member to the screwing hole portion. And an anti-winding body which is attached to the mounting body and prevents the winding of the miscellaneous matter around the shaft support portion.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the screwing member is a bolt having a bolt head, and the winding preventing body has a storage recess for storing the bolt head. It is.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1 or 2, wherein the anti-winding body has an arcuate plate-like anti-winding plate portion centered on the rotation center axis of the rotating shaft body. is there.

  The agricultural machine according to claim 4 is the agricultural machine according to any one of claims 1 to 3, wherein the winding preventing body covers both the shaft support part of the machine body and the flange part of the rotating shaft body.

  The agricultural machine according to claim 5 is the agricultural machine according to any one of claims 1 to 4, wherein a plurality of winding preventing means are arranged in parallel along a rotation direction of the rotary shaft body, and the plurality of winding preventing means are provided. The means covers the entire circumference of the outer peripheral portion of the shaft support portion of the airframe.

  According to the present invention, the wrapping preventing means can be easily attached, and the wrapping preventing means can prevent wrapping of miscellaneous matters.

It is a side view of the agricultural working machine which concerns on the 1st Embodiment of this invention. It is a schematic block diagram of an agricultural working machine same as the above. (A) is a fragmentary perspective view of an agricultural work machine same as the above, (b) is an exploded perspective view of a winding prevention means. It is a rear view fragmentary sectional view of an agricultural working machine same as the above. It is a partial side view of an agricultural working machine same as the above. It is a back view fragmentary sectional view of the agricultural working machine which concerns on the 2nd Embodiment of this invention. It is a partial side view of the agricultural machine based on the 3rd Embodiment of this invention. It is a back view fragmentary sectional view of the agricultural working machine which concerns on the 4th Embodiment of this invention. It is a partial side view of the agricultural working machine which concerns on the 5th Embodiment of this invention.

  A first 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 a rear portion of a tractor (not shown), which is a traveling vehicle, for example. It is a tilling work machine.

  The farm work machine 1 includes a machine body 2 connected to a three-point link (a farm work machine lifting support device) at the rear of the tractor.

  The airframe 2 has a mission case 4 in which a front-rear input shaft 3 projects forward, at the center in the left-right direction. The input shaft 3 is connected to the PTO shaft of the tractor via a joint, and rotates when the PTO shaft rotates to input power from the tractor side to the agricultural machine 1 side.

  The left and right side portions of the mission case 4 are respectively attached with inner end portions of a frame pipe 5 that is longitudinal in the left-right direction. An upper end portion of a box-shaped chain case (one-side shaft support) 6 is attached to the left end portion which is the outer end portion of the left side frame pipe 5 which is one side. An upper end portion of a plate-like bracket (other side shaft support) 7 is attached to a right end portion which is an outer end portion of the right side frame pipe 5 which is the other side.

  Further, between the lower part of the chain case 6 and the lower part of the bracket 7 which are opposed to each other, a cultivating means for performing a cultivating work while rotating in a predetermined rotational direction (for example, a down cut direction) by power from the input shaft 3 side. (Rotary) 11 is built.

  Further, the upper part of the tilling means 11 is covered with a tilling cover 10 of the airframe 2, and a plate-like leveling means (level flat plate) for performing leveling work behind the tilling means 11 is provided at the rear end of the tilling cover 10. ) 12 is provided so as to be pivotable in the vertical direction about the horizontal axis 13. A ground pressure adjusting means 15 for adjusting the ground pressure of the leveling means 12 is provided between the leveling means 12 and the machine body 2. A gauge ring means 16 for adjusting the tilling depth of the tilling means 11 is provided at the front of the machine body 2.

  As shown in FIG. 2 and the like, the tilling means 11 has a left and right longitudinal rotation shaft (cultivation shaft) 21 that rotates about the rotation center axis X in the left and right direction by power from the input shaft 3 side, The rotary shaft 21 is detachably attached and has a plurality of tilling claws 22 for performing a tilling operation. The tilling claw 22 has a plurality of bolt holes 22a.

  The rotary shaft body 21 is rotatably supported at both axial end portions by left and right inwardly projecting shaft support portions 20 of the machine body 2. That is, the left end portion, which is one end portion in the axial direction of the rotary shaft body 21, is interposed via the bearing 19 by the cylindrical shaft support portion (bearing housing) 20 fixedly provided at the lower portion of the vertical plate portion 6 a of the chain case 6. The right end which is the other end in the axial direction of the rotating shaft 21 is rotatably supported, and a cylindrical shaft support portion (bearing housing) 20 fixed to the lower portion of the bracket 7 via a bearing 19. And is rotatably supported.

  Each flange portion 40, which is a flange on both axial ends of the rotary shaft body 21, covers the outer peripheral portion (outer peripheral surface) of the shaft support portion 20 of the machine body 2 to the outer peripheral portion of the shaft support portion 20. A plurality of wrapping preventing means 25 for preventing the wrapping of other miscellaneous matters (grass, rice straw, etc.) are detachably attached.

  That is, for example, the two winding prevention means 25 on the left side cover the entire circumference (including substantially the entire circumference) of the shaft support part 20 that is the boss part on the chain case 6 side, and the two windings on the right side The attachment preventing means 25 covers the entire circumference (including substantially the entire circumference) of the outer peripheral portion of the shaft support portion 20 that is the boss portion on the bracket 7 side.

  The farm work machine 1 is provided with a total of four wrapping prevention means 25, two each on the left and right sides, but the left wrapping prevention means 25 and the right wrapping prevention means 25 have a substantially bilateral configuration. is there.

  Here, the rotary shaft 21 includes a tilling shaft 31 having a tilling claw mounting portion (flange) 30 that is a plurality of disk-like plate-like portions arranged at intervals in the left-right direction (axial direction), and the tilling shaft. A spline shaft (left shaft) 32 attached to the tilling claw attaching portion 30 at the left end portion of 31 and a right shaft 33 attached to the tilling claw attaching portion 30 at the right end portion of the tilling shaft 31 are provided.

  Each of the spline shaft 32 and the right shaft 33 includes a left-right axial portion 36 and a disk-like plate-like portion (flange) 37 provided integrally with the inner end portion of the axial portion 36. Has been.

  The left and right outermost flange portions (shaft end flange portions) 40 of the rotating shaft 21 are configured by the plate-like portion 37 and the tilling claw attachment portion 30 that are opposed to each other and overlapped with each other. The flange portion 40 is located at each end portion in the axial direction of the rotary shaft body 21, and a plurality of bolt holes 40 a are formed in the flange portion 40.

  A sprocket 38 is spline-fitted to the shaft-like portion 36 of the spline shaft 32 and fixed with a double nut 39. A chain (not shown) disposed in the chain case 6 is wound around the sprocket 38.

  The winding preventing means 25 is detachably attached to the flange portion 40 of the rotary shaft body 21 and has a mounting body (special nut) 41 having a screwing hole 45 and a bolt (screwing member) to the screwing hole 45 A curved plate-shaped anti-winding body 42 that is detachably attached to the mounting body 41 by screwing 43 and prevents the wrapping of foreign matter around the outer periphery of the shaft support portion 20 of the machine body 2 Yes.

  The bolt 43 that is a screwing member includes, for example, a hexagonal bolt head 43a and a bolt shaft 43b that is provided integrally with the bolt head 43a.

  The attachment body 41 is integrally configured by, for example, a plate-like nut 46 and a plurality (for example, two) of plates 47 fixed to the plate-like nut 46 by welding or the like.

  The mounting body 41 has a long and plate-shaped mounting plate portion 48, and a plurality of (for example, two) screw hole portions 49 in the plate thickness direction are formed in the mounting plate portion 48. The mounting body 41 is attached to the flange portion 40 by the mounting bolt 50 being screwed into the screw hole portion 49 from the bolt hole 40a of the flange portion 40.

  The mounting plate portion 48 is formed with a plurality of (for example, two) screwing hole portions 45 that are screw hole portions in a direction orthogonal to the plate thickness direction (the radial direction of the rotating shaft body 21). That is, the screwing hole 45 is formed in each of the two plates 47 constituting a part of the mounting plate 48.

  The anti-winding body 42 includes, for example, a plate-like member 51 that is longer than the attachment plate portion 48 of the attachment body 41 and is curved in an arc shape, and a plurality (for example, two) fixed to the plate-like member 51 by welding or the like. The plate 52 is integrally formed.

  The anti-winding body 42 has an arcuate plate shape (including a substantially arc plate shape) that is elongated around the rotation center axis X of the rotating shaft body 21 and has an elongated anti-winding plate portion 53. Thus, the outer peripheral portion of the shaft support portion 20 of the body 2 is covered.

  In addition, in the winding preventing plate portion 53, a plurality of (for example, two) concave storage recesses 54 opened outward in the radial direction of the rotating shaft body 21 correspond to the screwing hole portions 45 of the mounting body 41. It is provided at each position. Bolt holes 54 a communicating with the screw holes 45 are formed in the bottom plate portion of each storage recess 54. In the bolt 43, the bolt shaft portion 43b is screwed into the screwing hole portion 45 from the bolt hole 54a, and the bolt head portion 43a is housed in the housing recess 54. That is, the winding preventing body 42 is attached to the mounting body 41 only by screwing the bolt 43 into the screwing hole 45, and in this mounting state, the bolt head 43a is entirely composed of the spring washer 26 and the flat washer. 27 is housed in the housing recess 54 and does not protrude outward from the outer surface of the anti-winding plate portion 53 (see FIG. 5).

  Further, a notch-shaped nail insertion part (notch part) 55 is formed in the winding preventing plate part 53, and the tilling claw 22 is inserted into the nail insertion part 55. The tilling claw 22 is detachably attached to the flange portion 40 of the rotary shaft body 21 with a mounting bolt 50 and a claw mounting nut (special nut) 56. That is, the tilling claw 22 is attached to the flange portion 40 by screwing the attachment bolt 50 into the screw hole portion 57 of the claw attachment nut 56 from the bolt holes 22a and 40a.

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

  When the farm work machine 1 is connected to the rear part of the tractor and the farm work machine 1 is moved forward by the traveling of the tractor, each of the tilling claws 22 of the tillage means 11 is integrated with the rotary shaft 21 to set the rotation center axis X. Plowing work is performed while rotating in a predetermined rotation direction as the center, and behind the plowing means 11, the leveling means 12 performs the leveling work to flatten the field scene.

  At this time, the entire outer peripheral surface (including substantially the entire surface) of the shaft support portion 20 that supports the rotating shaft body 21 via the bearing 19 is rotated at positions on both ends in the axial direction of the rotating shaft body 21 of the tillage means 11. A plurality of winding preventing means 25 arranged in parallel along the rotation direction of the shaft body 21 are covered.

  For this reason, miscellaneous matters such as grass and rice straw in the field do not wrap around the outer periphery of the shaft support portion 20. Further, since the outer end portion of the anti-winding plate portion 53 of each anti-winding body 42 is located close to the inner surface of the chain case 6 or the bracket 7, it is possible to prevent the winding of grass, rice straw, and other foreign matters. From the slight gap 58 between the plate portion 53 and the chain case 6 and the slight gap 59 between the anti-winding plate portion 53 and the bracket 7, the space between the anti-winding plate portion 53 and the shaft support portion 20 is obtained. There is no such thing as going into the space 60 of the house.

  Furthermore, a slight gap 63 exists between the two anti-winding plate portions 53 adjacent to each other, but no foreign matter enters the space portion 60 from the gap 63. The gap 63 is for facilitating the assembly of the winding preventing means 25, but is not always necessary, and the opposing end portions of the two winding preventing plate portions 53 adjacent to each other may be brought into contact with each other. Good.

  According to the agricultural machine 1, the winding preventing means 25 has the mounting body 41 and the winding preventing body 42 which are separate from each other, and is wound only by screwing the bolt 43 into the screw hole 45. Since the anti-winding body 42 can be attached to the mounting body 41, the anti-winding means 25 can be easily attached to the flange portion 40 of the rotating shaft body 21, and the assembling property of each anti-winding means 25 is good. is there.

  Further, the bolt 43 for attaching the anti-winding body 42 to the attachment body 41 has a bolt head 43a, and the anti-winding body 42 has a storage recess 54 for storing the bolt head 43a. 43a does not protrude from the outer peripheral surface of the wrapping prevention plate portion 53, and can prevent dirt from adhering to the bolt head 43a of the bolt 43 and wear of the bolt head 43a.

  Further, the winding preventing body 42 has a winding preventing plate portion 53 that is formed in an arc plate shape around the rotation center axis X of the rotating shaft body 21 and covers the shaft support portion 20 of the machine body 2. The prevention plate portion 53 can appropriately prevent wrapping of miscellaneous matters.

  Further, a plurality of winding preventing means 25 are arranged adjacent to each other along the rotation direction of the rotating shaft body 21, and the outer peripheral portion of the shaft support portion (bearing portion) 20 of the machine body 2 by these plurality of winding preventing means 25 Since the entire circumference of the cover is covered, it is possible to more appropriately prevent the wrapping of the miscellaneous matter.

  Furthermore, when the anti-winding plate portion 53 of the anti-winding body 42 is worn away, only the anti-winding body 42 needs to be replaced, and the mounting body 41 can be used as it is.

  Further, since the wrapping preventing body 42 covers the claw mounting nut 56 together with the shaft support portion 20 of the machine body 2, not only can the wrapping of the miscellaneous matter around the shaft support portion 20 be prevented, but also the claw mounting nut 56 Abrasion can also be prevented.

  In addition, the anti-winding body 42 of the anti-winding means 25 is formed, for example, as shown in FIG. 6 by making the width dimension of the anti-winding plate portion 53 longer than that of FIG. Both the outer peripheral portion and the outer peripheral portion of the flange portion 40 may be covered.

  That is, the anti-winding body 42 shown in FIG. 6 has a flange cover portion 61 that is connected to the inner end of the anti-winding plate portion 53 that covers the outer peripheral portion of the shaft support portion 20, and this flange cover portion 61. The outer peripheral part of the flange part 40 is covered by this. For this reason, abrasion of the flange part 40 by contact with soil can be prevented.

  Further, the farm work machine 1 is not limited to the configuration having the total of four winding prevention means 25 for each of the two on the left and right sides. For example, as shown in FIG. A configuration provided with the prevention means 25 may be used. That is, the same number of winding prevention means 25 as the number of tilling claws (side claws) 22 attached to the flange portion 40 is attached to each flange portion 40 located at the axial end of the rotating shaft 21. .

  Furthermore, the number of the screw holes 45 of the mounting body 41 and the number of bolts 43 corresponding thereto are arbitrary. For example, one screw hole 45 is formed in the mounting body 41, and the screw hole section is formed. The winding prevention body 42 may be attached to the attachment body 41 by screwing one bolt 43 to 45.

  Further, the rotating shaft body 21 is not limited to a plurality of shaft members (cultivation shaft 31, spline shaft 32, and right shaft 33) coupled to each other. For example, as shown in FIG. It may consist of one shaft-shaped tilling shaft 71 having a plurality of tilling claw attachment portions 30. In this case, each flange portion 40 of the rotary shaft body 21 is configured by the tilling claw attachment portion 30 at the outermost end of the tilling shaft 71.

  Further, the anti-winding body 42 has an arc plate-like anti-winding plate portion 53, and the arc-like plate-like anti-winding plate portion 53 is slightly bent at a plurality of locations as shown in FIG. 9, for example. A substantially arc-shaped plate is included.

  Furthermore, the farm work machine 1 is not limited to a tillage work machine, and can be applied to, for example, a hull coater or a harvesting machine.

  Although several embodiments of the present invention and modifications thereof have been described, the above-described embodiments and modifications can be appropriately combined without departing from the gist of the present invention.

1 Agricultural machine 2 Airframe
20 shaft support
21 Rotating shaft
25 Winding prevention means
40 Flange
41 Mounting body
42 Anti-winding body
43 Bolts that are threaded members
43a bolt head
45 Screw hole
53 Winding prevention plate
54 Storage recess X Rotation center axis

Claims (5)

An airframe having a shaft support;
A rotating shaft body supported by the shaft support portion and having a flange portion;
An anti-winding means that is attached to the flange portion and prevents wrapping of miscellaneous matter around the shaft support portion;
The winding preventing means is
An attachment body attached to the flange portion and having a screw hole portion;
An agricultural work machine, comprising: a winding prevention body that is attached to the attachment body by screwing of a screwing member into the screwing hole portion and prevents a foreign matter from being wound around the shaft support portion. The screwing member is a bolt having a bolt head,
The agricultural working machine according to claim 1, wherein the winding preventing body has a storage recess for storing the bolt head. The agricultural work machine according to claim 1 or 2, wherein the anti-winding body has an arcuate plate-like anti-winding plate portion centered on the rotation center axis of the rotating shaft body. The agricultural machine according to any one of claims 1 to 3, wherein the anti-winding body covers both the shaft support portion of the machine body and the flange portion of the rotary shaft body. A plurality of winding preventing means are arranged in parallel along the rotation direction of the rotating shaft body,
The farm work machine according to any one of claims 1 to 4, wherein the entire circumference of the outer peripheral portion of the shaft support portion of the machine body is covered by the plurality of winding prevention means.

Images