JP5355237B2 - Agricultural machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a farming machine capable of preventing an elastic plate from being broken by biting foreign matters such as a stone. <P>SOLUTION: The farming machine 1 is equipped with a machine body 2 having a frame part 6. The machine body 2 is equipped with a tilling body 31 for carrying out a tilling operation while rotating. The farming machine 1 is equipped with an elastic plate 36 for covering the upper part of the tilling body 31. A supporter 37 for partially supporting the lower face of the elastic plate 36 is detachably attached to the frame body 6. At least the front terminal part of the elastic plate 36 can slidably be moved in the front and rear direction on the supporter 37 relative to the supporter 37. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an agricultural machine capable of suppressing breakage of an elastic plate due to biting of foreign matters such as stones.

  Conventionally, for example, an agricultural machine described in Patent Document 1 is known.

  This conventional farm work machine includes a work machine main body connected to the rear part of a traveling vehicle such as a tractor, a rotary type tiller that is rotatably provided on the work machine main body and rotates, and an upper part of the farm And a shield cover that covers the part. And the elastic board which is a rubber cover is affixed on the lower surface of a shield cover.

JP-A-4-8201 (FIG. 1)

  However, in the conventional agricultural machine, since the elastic plate is attached to the lower surface of the shield cover, for example, a foreign object such as a stone is caught between the shield cover and the tillage body, and the foreign object is caught. The elastic plate may be damaged.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can suppress the failure | damage of the elastic board by the biting of foreign materials, such as a stone.

Elastic 請 Motomeko 1 agricultural machine described, covering the machine body having a frame portion, provided rotatably in the machine body, a tilling member to the tilling operation while rotating, the upper portion of the tilling bodies An agricultural working machine comprising a plate and a support attached to the frame portion and partially supporting the lower surface of the elastic plate, wherein at least a part of the elastic plate is movable with respect to the support a is, mounting at least a front end portion of the elastic plate, said has a slidable the support upward in the longitudinal direction relative to the support, the frame portion of the machine body, said support a material having an attachment portion that is, the elastic plate has at least the front long hole portion in the longitudinal direction longitudinal shape in section, the one in which the attachment portion is loosely inserted into the long hole.

Agricultural machine according to claim 2, wherein, in the agricultural machine according to claim 1 Symbol placement, supports are those which are composed of a plurality of supporting members arranged in the horizontal direction at a distance from each other.

According to the invention of 請 Motomeko 1, since at least a portion of the elastic plate are movable relative to the support, hardly write foreign matters such as stones chews between the plow body and the elastic plate, stone It is possible to suppress damage to the elastic plate due to the biting of foreign matter such as, and at least the front end of the elastic plate can be slid forward and backward on the support relative to the support. Damage to the elastic plate due to the biting of the work piece can be appropriately suppressed, and furthermore, the attached portion of the frame portion of the work machine body is loosely inserted into the elongated hole portion of the elastic plate, so that the attached portion is elastic in the elongated hole portion. It can move relative to the plate and can effectively suppress the breakage of the elastic plate due to the biting of foreign matters such as stones.

According to the second aspect of the invention, the lower surface of the elastic plate can be partially supported by the plurality of support members arranged in the left-right direction at intervals.

It is a side view of the agricultural working machine which concerns on one embodiment of this invention. It is a top view of the frame part of a farm working machine same as the above. It is a side view of the frame part of a farm working machine same as the above. It is a top view of the elastic board of a farm working machine same as the above. It is the side view and top view of a supporting member of a farm work machine same as the above. It is principal part sectional drawing of an agricultural working machine same as the above. It is a principal part top view of an agricultural working machine same as the above. It is a side view for demonstrating an effect | action of an agricultural working machine same as the above. (A) And (b) is principal part sectional drawing for demonstrating an effect | action of an agricultural work machine same as the above. It is a side view for demonstrating an effect | action of an agricultural working machine same as the above. It is a top view of the elastic board of the agricultural working machine which concerns on other embodiment of this invention. It is a side view of the frame part of a farm working machine same as the above.

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

  In FIG. 1, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to the rear part of a tractor (not shown) that is a traveling vehicle, and moves forward in the field (leftward in FIG. 1) as the tractor travels. While plowing and leveling work.

  The farm work machine 1 includes a work machine main body 2 connected to a three-point link hitch part (work machine lifting support part) that a tractor (not shown) has at the rear.

  The work machine main body 2 has a tractor connecting portion (not shown) which is a traveling vehicle connecting portion connected to a three-point link hitch portion of the tractor. The tractor connecting portion includes a central top mast and a pair of left and right lower arms. Etc.

  The work machine body 2 has a frame pipe portion 4 that is longitudinal in the left-right direction and has a substantially circular cross section, and a shaft holding portion such as a transmission case is provided at the center in the longitudinal direction of the frame pipe portion 4. . An unillustrated shaft holding portion rotatably supports an input shaft in the front-rear direction for inputting power from the tractor, and this input shaft is connected to the PTO shaft of the tractor via power transmission means.

  Furthermore, the work machine body 2 includes a chain case portion 5 that is a transmission case portion provided at a left end portion that is one end portion in the longitudinal direction of the frame pipe portion 4, and a right end portion that is the other end portion in the longitudinal direction of the frame pipe portion 4. And a bracket portion (not shown) which is a support portion provided on the head.

  In addition, the work machine body 2 includes a frame portion 6 that is installed on an intermediate portion in the vertical direction of the chain case portion 5 and an intermediate portion in the vertical direction of the bracket portion.

  As shown in FIGS. 2 and 3, the frame portion 6 is formed, for example, in a frame shape, that is, has a substantially rectangular ring shape that is long in the left-right direction in a plan view, for example. In other words, the frame portion 6 includes a pair of left and right side plate frames 11 that are spaced apart from each other in the front-rear direction, a front frame 12 that is formed in a left-right direction that connects the front ends of the side plate frames 11, and And a rear frame 13 that is long in the left-right direction and connects the rear ends of the two.

  The front frame 12 has a cylindrical portion 16 that is longitudinal in the left-right direction and has a substantially rectangular cross section. The internal thread portion 17 is fixed. That is, the front frame 12 has a plurality of female screw parts 17 such as collars arranged in the left-right direction at intervals, and a thread groove 18 is formed on the inner peripheral surface of each female screw part 17, and the lower end of each female screw part 17 The portion protrudes downward from the lower surface of the cylindrical portion 16 (see FIG. 6).

  The rear frame 13 has a plate-like portion 21 that is elongated in the left-right direction and is bent at a plurality of locations. The plurality of locations that are arranged in the left-right direction at intervals of the rear end of the plate-like portion 21 are substantially circular. A mounting hole 22 having a shape is formed. That is, the rear frame 13 has a plurality of mounting hole portions 22 that are positioned corresponding to the female screw portions 17 of the front frame 12 and are arranged in the left-right direction at intervals.

  On the other hand, as shown in FIG. 1, the agricultural working machine 1 is provided on the working machine main body 2 so as to be rotatable, and performs a plowing work while rotating in a predetermined direction (for example, an upcut direction or a downcut direction). A body 31 and a substantially plate-shaped leveling body 32 provided on the work machine body 2 so as to be rotatable in the vertical direction and performing leveling work behind the cultivating body 31 are provided.

  The cultivating body 31 has a left-right rotating shaft 33 laid on the lower end portion of the chain case portion 5 and the lower end portion of the bracket portion. The rotating shaft 33 rotates with the rotating shaft 33 while performing the tilling work. A plurality of tilling claws (not shown) are attached.

  A power transmission means (not shown) for transmitting power from the input shaft is connected to the rotary shaft 33 of the tillage body 31, and this power transmission means is a transmission shaft in the frame pipe portion 4, a chain case portion. 5 is composed of a chain, a sprocket, and the like.

  The upper portion of the cultivating body 31 is covered with an elastic plate 36 such as a substantially curved surface rubber cover that bulges upward in the front-rear direction center. That is, as shown in FIG. 1, the agricultural machine 1 is elastically deformable rubber elastic that prevents the soil splashed up by the tiller 31 by covering the upper part of the tiller 31 and elastically deforming. A plate 36 and a metal support 37 that is detachably attached to the frame portion 6 of the work machine body 2 and partially supports the lower surface of the elastic plate 36 so that the elastic plate 36 does not bend downward. Yes.

  The elastic plate 36 is made of a relatively hard synthetic rubber plate to which dirt does not easily adhere compared to, for example, an iron plate or the like, and has a substantially rectangular plate shape that is long in the left-right direction in a plan view as shown in FIG. Is. Long holes 38 that are longitudinal in the front-rear direction are formed at a plurality of positions in the left-right direction spaced apart from each other at the front end of the elastic plate 36. A plurality of mounting holes 39 having a substantially circular shape are formed at a plurality of positions arranged in the left-right direction at intervals in the rear end of the elastic plate 36 so as to correspond to the long holes 38.

  The support body 37 is configured by a plurality of support members 41 such as a plurality of plate-shaped presser fittings that are longitudinally arranged in the left-right direction and spaced apart from each other. Each support member 41 is made of a long metal plate bent at a plurality of locations. As shown in FIG. 5, the front and rear ends of each support member 41 have substantially square mounting holes 42, 43 is formed.

  As shown in FIG. 1, the front end portion of the support member 41 is attached to the lower surface of the female screw portion 17 of the front frame 12 of the frame portion 6 with a bolt 45 that is an attachment means.

  That is, as shown in FIGS. 6 and 7, the lower end portion (projecting portion 44) of the female screw portion 17 of the front frame 12 moves along the long hole portion 38 to the long hole portion 38 at the front end portion of the elastic plate 36. The shaft portion 45a of the bolt 45 inserted through the mounting hole portion 42 of the support member 41 is screwed and tightened to the loosely inserted female screw portion 17. As a result, based on the elastic deformation of the elastic plate 36, the front end portion of the elastic plate 36 is on the upper surface of the support member 41 with respect to the front end portion of the support member 41. (Including the direction) can be slid by an amount corresponding to the slot 38.

  The thickness dimension A of the elastic plate 36 is smaller than the distance B (projecting length dimension of the protruding portion 44) B between the upper surface of the support member 41 and the lower surface of the cylindrical portion 16 of the front frame 12, and the elastic plate There is a slight gap 40 between the upper surface of 36 and the lower surface of the tubular portion 16 (see FIG. 6).

  1, the rear end portion of the support member 41 is attached to the lower surface of the rear end portion of the plate-like portion 21 of the rear frame 13 of the frame portion 6 via the rear end portion of the elastic plate 36. That is, for example, it is fixedly attached with a bolt 46 and a nut 47.

  That is, the mounting hole portion 22 of the plate-like portion 21 of the rear frame 13, the mounting hole portion 39 of the elastic plate 36, and the mounting hole portion 43 of the support member 41 coincide with each other in the vertical direction. A shaft portion 46a of a bolt 46 is inserted into the holes 22, 39, and 43, and a nut 47 is screwed and tightened to the distal end side of the inserted shaft portion 46a. As a result, the rear end portion of the elastic plate 36 is fixed to the support member 41 and the rear frame 13. That is, the front end portion of the elastic plate 36 can move in the front-rear direction with respect to the front frame 12, but the rear end portion of the elastic plate 36 is fixed with respect to the rear frame 13 and cannot move.

  The lower surface of the elastic plate 36 is partially covered with a plurality of support members 41, and the upper surface of the elastic plate 36 is covered with the front frame 12 at the front end and covered with the rear frame 13 at the rear end. A portion of the upper surface of the elastic plate 36 excluding the front and rear end portions is an exposed portion 36a exposed upward.

  On the other hand, the upper end portion of the leveling body 32 is attached to the rear frame 13 of the frame portion 6 of the work machine body 2 via a hinge 51 so as to be rotatable about a shaft portion 50 in the left-right direction. The hinge 51 is fixedly attached to the plate-like portion 21 of the rear frame 13 by attachment means, that is, for example, bolts 52 and nuts 53.

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

  When the farm work machine 1 is moved forward by the traveling of the tractor, the cultivating body 31 performs the cultivating work while rotating, and the ground leveling body 32 follows the farm scene behind the cultivating body 31 with the shaft portion 50 as the center. Leveling work is performed while rotating up and down.

  Here, for example, when a tilling work is performed, as shown in FIG. 8, when a foreign substance a such as a stone or a lump enters between the elastic plate 36 and the tilling claw of the tilling body 31, FIG. And, as shown in (b), the elastic plate 36 is pushed by the foreign object a and elastically deforms upward, and based on this elastic deformation, the front end portion of the elastic plate 36 is the protruding portion 44 of the female screw portion 17 of the front frame 12. It slides backward with respect to the support member 41 until it hits.

  For this reason, the foreign material a such as a stone is not caught between the elastic plate 36 and the tilling claws of the cultivating body 31, and the biting of the foreign material a is avoided.

  When the foreign object a comes out between the elastic plate 36 and the cultivator 31, the elastic plate 36 slides forward with respect to the support member 41 by its own weight and elastic restoring force, whereby the support member 41. 1 to return to the original state shown in FIG.

  Further, for example, as shown in FIG. 10, when a lot of soil b such as mud that has been spun up by the tillage body 31 adheres to a portion of the lower surface of the elastic plate 36 that is not supported by the support member 41. The operator drops the soil b from the lower surface of the elastic plate 36 by hitting the exposed portion 36a of the elastic plate 36 from above and elastically deforming it downward. At this time, the elastic plate 36 slides backward with respect to the support member 41 until the front end portion of the elastic plate 36 contacts the protruding portion 44 of the female screw portion 17 of the front frame 12 based on elastic deformation.

  And according to the said agricultural working machine 1, since the front-end part of the elastic board 36 can move to the front-back direction with respect to the support member 41 of the support body 37, between the elastic board 36 and the tilling body 31 It is possible to avoid the intrusion of a foreign object a such as a stone between them, and to appropriately prevent the elastic plate 36 from being damaged by the intrusion of a foreign object a such as a stone.

  Further, by hitting the exposed portion 36a of the elastic plate 36 from above and elastically deforming it, the soil b such as mud adhering to the lower surface of the elastic plate 36 can be dropped and removed easily and simplification of cleaning. In addition, it is lighter than a configuration in which the entire upper surface of the elastic plate 36 is covered with an iron plate.

  Further, since the female screw portion 17 of the frame portion 6 of the work machine body 2 is loosely inserted into the long hole portion 38 of the elastic plate 36, the female screw portion 17 is relative to the elastic plate 36 in the long hole portion 38. It is possible to move, and it is possible to effectively suppress breakage of the elastic plate due to the biting of foreign matter a such as stone.

  Further, since the elastic plate 36 can be removed from the frame portion 6 by removing the support member 41 from the frame portion 6, replacement work or maintenance work of the elastic plate 36 can be easily performed.

  In the above-described embodiment, the front end portion of the elastic plate 36 is slidable on the support member 41 in the front-rear direction with respect to the front end portion of the support member 41, and the rear end portion of the elastic plate 36 is the support member. The configuration fixed to the rear end portion of 41 has been described. For example, the front end portion of the elastic plate 36 is slidable on the support member 41 in the front-rear direction with respect to the front end portion of the support member 41, and is elastic. The rear end portion of the plate 36 may be slidable in the front-rear direction on the support member 41 with respect to the rear end portion of the support member 41.

  The agricultural machine 1 according to another embodiment includes an elastic plate 36 shown in FIG. 11, and long hole portions 38 are formed at the front and rear ends of the elastic plate 36, respectively. Further, as shown in FIG. 12, a frame member 61 having the same configuration as that of the front frame 12 is fixed to the plate-like portion 21 of the rear frame 13 of the farm work machine 1, and the frame member 61 is connected to the cylindrical portion 16 and the female screw. Part 17.

The lower end portion (projecting portion 44) of the female screw portion 17 of the frame member 61 is loosely inserted into the long hole portion 38 at the rear end portion of the elastic plate 36 so as to be movable along the long hole portion 38. The shaft portion 46a of the bolt 46 inserted through the mounting hole 43 of the support member 41 is screwed to the female screw portion 17. As a result, like the front end portion of the elastic plate 36, the rear end portion of the elastic plate 36 is in the front-rear direction (substantially front and back inclined with respect to the horizontal direction) on the upper surface of the support member 41 with respect to the rear end portion of the support member 41. (Including the direction) can be slid by an amount corresponding to the slot 38 .

  Further, the support 37 is not limited to the one constituted by a plurality of plate-like support members 41, and may be constituted by a plurality of rod-like support members, for example, and the number of support members is Is optional.

1 Agricultural machine 2 Work machine body 6 Frame
17 Female thread part to be mounted
31 Tillage
36 Elastic plate
37 Support
38 Slotted hole
41 Support member

Claims (2)

A work machine body having a frame portion;
A plowing body that is rotatably provided in the work machine main body and performs a plowing work while rotating,
An elastic plate covering the upper part of this tillage body,
A support attached to the frame portion and partially supporting the lower surface of the elastic plate;
A farm working machine in which at least a part of the elastic plate is movable with respect to the support,
At least the front end portion of the elastic plate is slidable in the front-rear direction on the support relative to the support,
The frame portion of the machine body has to be mounted portion where the support is mounted,
The elastic plate has a long hole portion in the longitudinal direction at least at the front end,
Agricultural working machine you wherein the attachment portion is loosely inserted into the long hole. Support agricultural machine according to claim 1 Symbol mounting, characterized in that it is constituted by a plurality of supporting members arranged in the horizontal direction at a distance from each other.

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