JP2008022716A - Farming implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a farming implement capable of preventing tilling tines except a specific tilling tine from being fixed onto a flange. <P>SOLUTION: The farming implement has the following construction. A tilling mechanism 8 has the flange 12 provided on the outer circumference of a rotating shaft. The basal end plate part 26 of a tilling tine 13 is detachably fixed via bolts 14 and nuts onto the flange plate part 21 of the flange 12. The flange 12 has bolt holes provided on the flange plate part 21 and threaded with a bolt 14 each and projections 23 projected on the flange plate part 21. The tilling tine 13 has bolt holes provided on the basal end plate part 26 and threaded with the bolt 14 each and holes 29 provided on the basal end plate part 26 and threaded with the projection 23 each. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a farm work machine in which a tilling claw is detachably fixed to a flange provided on an outer peripheral portion of a rotating shaft.

Conventionally, for example, a rotating shaft provided rotatably between the chain case part and the bracket part of the fuselage, a flange provided on the outer peripheral part of the rotating shaft, and a bolt (assembled bolt etc.) and a nut can be attached to and detached from the flange. 2. Description of the Related Art Agricultural working machines such as a tilling device having a tilling claw fixed to the paddle are known (see, for example, Patent Document 1).
JP-A-9-285203 (FIG. 1 etc.)

  However, in the conventional agricultural machine, any cultivation claw having a hole corresponding to the bolt hole of the flange can be fixed to the flange with any cultivation claw. There is a possibility that it is fixed to the flange and an appropriate tillage effect cannot be obtained.

  This invention is made in view of such a point, can prevent that a cultivation nail | claw other than a specific cultivation nail is fixed to a flange, and provides the agricultural machine which can acquire an appropriate cultivation effect. Objective.

  The agricultural machine according to claim 1 includes a rotating shaft, a flange provided on an outer peripheral portion of the rotating shaft, and a tilling claw fixed to the flange by a bolt and a nut so as to be detachable. A flange plate portion, a bolt hole formed in the flange plate portion, into which the bolt is inserted, and a projection provided on the flange plate portion, and the tillage claw is provided with the flange plate portion. A base end plate portion fixed to the base end plate portion, and formed in the base end plate portion, facing the bolt hole portion, the bolt hole portion into which the bolt is inserted, and the base end plate portion. And a portion to be inserted into which the protruding portion is inserted.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the insertion portion of the tilling nail is a hole or a notch formed in the base end plate.

  According to the present invention, since the protruding portion is provided on the flange plate portion of the flange, it is possible to prevent the tilling claws other than the specific tilling claw having the insertion portion into which the protruding portion is inserted from being fixed to the flange. And an appropriate tillage effect can be obtained.

  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 is a cultivating device that performs cultivating and leveling work while moving on the field by traveling of the tractor. is there.

  The farm work machine 1 includes a machine body 2 connected to a three-point link part at the rear of the tractor. An input shaft 4 for inputting power from the tractor side is rotatably provided in the mission case portion 3 of the airframe 2. The PTO shaft of the tractor is connected to the input shaft 4 via a universal joint and a transmission shaft.

  The airframe 2 has a chain case portion (transmission case portion) 6 and a bracket portion 7 which are opposed to each other on the left and right sides. Between the left and right chain case parts 6 and the bracket part 7, a cultivating means (rotary) 8 is provided rotatably so as to perform a cultivating work while rotating around a horizontal axis with power from the input shaft 4 side. .

  Here, the tilling means 8 is a left-right longitudinal rotation shaft (cultivation shaft) provided between the lower end portion of the chain case portion 6 and the lower end portion of the bracket portion 7 so as to be rotatable about an axis in the left-right direction. 11, a plurality of flanges 12 provided on the outer peripheral portion of the rotating shaft 11 at intervals in the axial direction, and a plurality of tilling claws 13 fixed to the flange 12 by bolts 14 and nuts 15 so as to be detachable. I have. For example, a plurality of, for example, two tilling claws (right tilling claws 13R and left tilling claws 13L) 13 are detachably fixed to each flange 12 (see FIG. 2).

  As shown in FIGS. 2 to 4, each flange 12 includes a flange plate portion 21 that protrudes radially outward of the rotary shaft 11 from the outer peripheral portion of the rotary shaft 11 and is positioned along the vertical plane, and a flange. A plurality of pairs, for example, two pin-shaped holes provided in the flange plate 21 and a plurality of pairs in which the shaft portion 14a of the bolt 14 is inserted in the plate portion 21 and inserted into the plate portion 21. Projecting portion 23. The projecting portion 23 is integrally projected at a position between a pair of bolt hole portions 22 on one surface of the flange plate portion 21.

  As shown in FIGS. 2, 3, and 5, each tilling claw 13 is a plane fixed in a state where it is superimposed on the surface of the flange plate 21 of the flange 12 on the side where the projection 23 is provided. And a desired curved blade portion 27 connected to the base end plate portion 26. Three holes are formed in the base end plate portion 26 in a penetrating manner, that is, two bolts in one pair in which the shaft portion 14a of the bolt 14 is inserted so as to face the bolt hole portion 22 of the flange 12. A hole 28 for use and a circular hole 29 that is one inserted portion into which the protrusion 23 of the flange 12 is inserted and fitted are formed so as to penetrate therethrough. Note that the hole 29 into which the protrusion 23 is removably fitted has a size corresponding to the outer diameter of the protrusion 23 and is formed in a circular shape slightly smaller than the bolt hole 28.

  The airframe 2 has a cover part (not shown) that covers the upper part of the tillage means 8, and the rear end of this cover part is rotated up and down so as to follow the field scene behind the tillage means 8. On the other hand, leveling means (not shown) for leveling work is provided so as to be rotatable up and down. The leveling means includes a first leveling plate (level plate) having an upper end attached to the rear end portion of the cover portion of the fuselage via a rubber plate, and a front end portion having a horizontal axis on the lower end portion of the first leveling plate. It is comprised by the 2nd leveling board (rake) etc. which were attached so that rotation was possible.

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

  When plowing and leveling work is performed using the farm work machine 1, when the farm work machine 1 is connected to the three-point link portion of the tractor and the farm work machine 1 is moved by the traveling of the tractor, the rotary shaft 11 of the plowing means 8 has a plurality of plows. Rotating with the claw 13, the tilling work is performed at the blade portions 27 of the plurality of tilling claws 13. At the same time, the leveling work is performed by the leveling means behind the tillage means 8, and the field scene is leveled.

  For example, when replacing the tillage claw 13, the old tillage claw 13 is removed from the flange 12, and the new tillage claw 13 is attached and fixed to the flange 12 using the bolt 14 and the nut 15.

  That is, the projection 23 of the flange 12 is inserted and fitted into the hole 29 of the tilling claw 13, and the bolt hole 28 forming a pair of the tilling claw 13 and the bolt hole 22 forming a pair of the flange 12 Then, the shaft part 14a of the bolt 14 is inserted into the bolt hole parts 22 and 28 facing each other, and the nut 15 is screwed onto the tip side of the shaft part 14a and tightened.

  At the time of this replacement, even if another type of tilling claw not having the hole 29 is mistakenly fixed to the flange 12, the bolt hole of the tilling nail is made to face the bolt hole 22 of the flange 12. The tillage claw cannot be fixed to the flange 12.

  As described above, according to the farm work machine 1, the projection 23 is provided on the flange plate portion 21 of the flange 12 of the tillage means 8, and therefore the specific tillage nail having the hole 29 into which the projection 23 is inserted. It is possible to prevent the tilling claws other than 13 from being fixed to the flange 12, and thus an appropriate tilling effect can be obtained.

  In addition, by inserting and fitting the projection 23 of the flange 12 into the hole 29 of the tilling claw 13, the alignment of the bolt hole 22 of the flange 12 and the bolt hole 28 of the tilling claw 13 can be facilitated. Easy replacement.

  In the above embodiment, the configuration in which the hole 29 is formed in the base end plate portion 26 as the insertion portion of the tilling claw 13 has been described. However, as shown in FIG. 6, for example, the projection 23 is inserted and fitted. Even in the configuration in which the semicircular cutout portion 31 that is the inserted portion is formed, the same effect can be obtained.

  Further, the hole 29 of the tilling claw 13 is not limited to the through hole formed in the proximal end plate portion 26 in a penetrating manner, and may be a concave hole formed in the proximal end plate portion 26.

  In addition, the configuration is not limited to the configuration in which the projection 23 is integrally provided on the flange plate portion 21 of the flange 12, and a configuration in which the projection 23 is detachably provided on the flange plate portion 21 may be used.

  Further, the configuration in which two bolts 14 and two nuts 15 are fixed to one tilling claw 13 has been described. For example, a set bolt in which two bolts 14 are fixed to one plate. And two nuts or a washer may be used as necessary.

  Further, the farm working machine 1 is not limited to a tilling device that performs tillage leveling work, and may be any farm working machine such as a scraping device or a straw coating device as long as it has a tilling means including a tilling claw 13 and the like.

It is the schematic of the agricultural machine based on one embodiment of this invention. It is a side view of the state which fixed the tilling nail to the flange of the agricultural working machine same as the above. It is a front view of the state which fixed the tilling nail to the flange of the agricultural working machine same as the above. It is a front view of the flange of a farm working machine same as the above. It is a side view of the tilling nail of a farm working machine same as the above. It is a side view of the state which fixed the tilling nail to the flange of the agricultural machine of other embodiments of the present invention.

Explanation of symbols

1 Farming machine
11 Rotation axis
12 Flange
13 tillage nail
14 volts
15 nut
21 Flange plate
22 Bolt hole
23 Protrusion
26 Base plate
28 Bolt hole
29 Hole to be inserted
31 Notch that is inserted

Claims (2)

A rotation axis;
A flange provided on the outer periphery of the rotating shaft;
A tilling claw fixed to the flange by a bolt and a nut so as to be detachable,
The flange is
A flange plate,
A bolt hole formed in the flange plate portion into which the bolt is inserted,
A projection provided on the flange plate,
The tillage claw is
A base plate fixed to the flange plate,
A bolt hole formed in the base end plate, positioned opposite to the bolt hole, and inserted with the bolt;
A farm working machine, comprising: an insertion portion formed on the base end plate portion and into which the projection portion is inserted. The farm working machine according to claim 1, wherein the insertion portion of the tillage nail is a hole or a notch formed in the base end plate.

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