JP2014180230A - Farm field working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a farm field working machine which can easily adjust an angle with respect to a farm field face at a farm field working machine side without using a tractor-side telescopic implement provided at an upper link.SOLUTION: A mast 11 and right and left lowering support brackets 12 are attached to an upper link 4 and a lower link 5 of a three-point hitch link 3, a working machine side telescopic implement 18 which is adjustable in length in the fore-and-aft direction is provided between the mast 11 and a working machine side telescopic implement support bracket 17, front and rear frames 6 and 7 are vertically rotated with respect to the three-point hitch link 3, the mast 11, and the right and left lowering support brackets 12 by adjusting a length of the working machine side telescopic implement 18, and an angle of a stubble cultivation working machine with respect to a farm field face is made to be adjustable.

Description

  The present invention relates to a field work machine such as a stable cultivator or a subsoil work machine.

  A stable cultivator is known as a field work machine for performing tilling work on a relatively shallow ground in a field (see Patent Document 1). Moreover, a subsoiler work machine is known as a rough working field work machine (refer to patent documents 2 and 3).

  A conventional example of a stable cultivator as an example of a field work machine is shown in FIGS. The overall configuration of the conventional stable cultivating machine 40 is substantially the same as that of the stable cultivating machine 1 described later as an embodiment of the field working machine in the present invention, and the description thereof is omitted here.

  The conventional stable cultivating machine 40 is connected to the tractor 2 via the three-point hitch link 3 as shown in FIGS. Specifically, the mast 41 and the lower link support bracket 12 of the stable culturing machine 40 are attached to the upper link 4 and the lower link 5 of the three-point hitch link 3, thereby connecting the stable cultivating machine 40 to the tractor.

  By the way, when cultivating a field with a field work machine, it is necessary to adjust the depth of tilling according to the soil condition (soil hardness, watering, etc.) and the type of crop to be planted. Moreover, it is necessary to adjust so that a farm work machine (for example, a stable cultivating machine, a subsoiler work machine) is leveled with respect to a farm scene at the time of tilling work, and a tilling work is performed.

  The reason is that by making the tillage depth constant, that is, by making the soil depth constant, the soil in the field is made to be the same condition so that there is no difference in crop yield.

  For this reason, in the case of the stable cultivating machine 40, the length of the upper link 4 is adjusted by the tractor-side stretching tool 29 provided on the upper link 4, as shown in FIGS. Thus, the entire stable cultivating machine 40 is rotated in the vertical direction around the lower link mounting pin 20 for rotatably mounting the lower link support bracket 12 to the lower link 5 so as to be horizontal with respect to the field scene. The angle of the stable cultivating machine 40 is adjusted.

  The tractor-side expansion / contraction tool 29 may have the same configuration as that of the turnbuckle (see the embodiment described later), or may be an expansion / contraction tool using a hydraulic cylinder whose length can be adjusted from the operation room of the tractor.

JP 2010-094036 A JP 2001-148901 A JP 2000-270602 A

  In the conventional field work machine, as described in the example of the stable culturing machine 40 in FIGS. 4 and 5, the length of the upper link 4 is adjusted by the tractor-side stretching tool 29 provided on the upper link 4, so that the stable culturing work is performed. The entire machine 40 is turned up and down to adjust the angle of the stable cultivating machine 40 with respect to the field scene during the tilling work.

  However, the tractor-side telescopic tool 29 of the upper link 4 is normally provided as an accessory of the tractor 2 and needs to be adjusted in a space surrounded by the tires of the tractor 2 and is difficult to perform. In addition, there is a problem that the length of the upper link 4 must be adjusted for each work machine to be mounted on the tractor.

  For this reason, as a matter of fact, the tractor-side telescopic tool 29 of the upper link 4 is left in a constant adjustment state, and fine tillage can be achieved if the angle of the work tool for tillage such as a stable culti can be adjusted. Where the depth should be obtained, the field work is often performed without adjustment because it is cumbersome.

  Further, the tractor-side telescopic tool 29 of the upper link 4 roughly adjusts the angle of the work implement of the field work machine with respect to the field scene, but there are cases where it is desired to finely adjust. In such a case, there is a limit only by adjusting the tractor-side telescopic tool 29 of the upper link 4.

  Farmers using tractor horsepower belts towing these field work machines use a so-called quick hitch to use the rotary work machine, so that maintenance is carried out without adjusting the tractor side telescopic tool 29 almost. There are many cases where there is no work, and there is a problem that the tractor-side telescopic tool 29 has stopped moving when other work machines such as farm work machines are installed.

  The present invention aims to solve the above-mentioned conventional problems, without adjusting the angle of the work implement of the field work machine with respect to the field scene with the tractor-side telescopic tool provided on the upper link, or It is an object of the present invention to realize a field work machine that can be easily adjusted on the field work machine side in addition to the adjustment by the tractor-side expansion tool.

  In order to solve the above problems, the present invention provides a frame, left and right lower link support brackets rotatably attached to the frame, a mast fixed to the left and right lower link support brackets, and a work machine fixed to the frame. A field work machine comprising a side extension tool support bracket, a work machine side extension tool, and a tilling work tool supported by a frame, and connected to the tractor via a three-point hitch link attached to the tractor. The mast is attached to the upper link of the three-point hitch link, and the left and right lower link support brackets are attached to the lower link of the three-point hitch link. A work implement-side telescopic tool whose length can be adjusted in the front-rear direction is provided. By adjusting the length of the work implement-side telescopic tool, a 3-point hitchlin For mast and the left and right lower link support bracket to rotate the frame in the vertical direction, to provide a field working machine, characterized in that the adjustable angle of the field working machine for field surface.

  The frame includes a front frame, a rear frame, and left and right coupling frames arranged in the front-rear direction for coupling the front frame and the rear frame, and the lower link support bracket is rotatably attached to the coupling frame. The work implement side extension tool support bracket may be fixed to the rear frame.

  A mast fixing shaft may be bridged and fixed between the left and right lower link support brackets, and the mast may be fixed to the mast fixing shaft.

  The work implement side expansion / contraction tool includes a cylinder portion with a handle, a front rod and a rear rod, and screws in opposite directions are formed on the front end side and the rear end side of the tube portion, and the front end side of the cylinder portion May be configured such that the rear portion of the front rod is screwed and the front portion of the rear rod is screwed to the rear end side of the cylindrical portion.

  The upper link to which the mast is attached may be provided with a tractor-side expansion / contraction tool.

  The working tool for tilling supported by the frame may include a beam and a chisel attached to the beam.

  According to the present invention, the angle of a work implement such as a stubble cultivator or subsoiler work implement, such as a stable cultivator or subsoiler work implement, with respect to the field scene of the work implement such as a subsoiler is adjusted without using the upper link extender or with the upper link extender. In addition to adjustment, it can be easily adjusted on the field work machine side.

It is a perspective view at the time of tillage work of the stable cultivator working machine which is one Example of the agricultural field working machine concerning the present invention. It is a top view at the time of tillage work of the stable cultivator of the embodiment. It is a side view at the time of tillage work of the stable cultivator of the embodiment. It is a perspective view at the time of tillage work explaining the operation of the conventional stable cultivator. It is a side view at the time of tillage work explaining an operation of the conventional stable cultivator.

  EMBODIMENT OF THE INVENTION The form for implementing the agricultural field working machine which concerns on this invention is demonstrated below with reference to drawings based on an Example.

  As a field work machine according to the present invention, in this embodiment, a stable cult work machine provided with a drilling unit (a work tool provided with a beam, a cutting knife, a chisel, and a wing, which will be described later) as a work tool for tillage, 1 to 3 will be described.

  In the present specification, the left and right are the left and right sides (the right and left direction is the direction perpendicular to the traveling direction during the work of the stubble cultivator), and the front and rear (front and rear) are It is assumed that they are front and rear (front and rear) in the direction of travel when the stable cultivator is working.

  The stable cultivator 1 of this embodiment is connected to a tractor 2 via a three-point hitch link 3 as shown in FIGS. The three-point hitch link 3 includes an upper link 4 and a lower link 5. The upper link 4 is provided with a tractor-side expansion / contraction tool 29, and the length of the upper link 4 can be expanded and contracted.

  As shown in FIGS. 1 to 3, the stable culturing machine 1 includes a front frame 6 and a rear frame 7, left and right outer coupling frames 8, left and right inner coupling frames 9, and a plurality of attachments. Arm 10, mast 11, left and right lower link support bracket 12, work implement side telescopic tool 18, work implement side telescopic tool support bracket 17, a plurality of front excavation units 13 and rear excavation units 14, A connection plate 15 and a roller device 16 for crushing soil pressure are provided.

  The front frame 6 and the rear frame 7 are horizontally arranged in the left-right direction. The left and right inner coupling frames 9 are arranged in the front-rear direction so as to couple the front frame 6 and the rear frame 7 respectively.

  The left and right outer coupling frames 8 are arranged in the front-rear direction so as to couple the front frame 6 and the rear frame 7 respectively. At the rear ends of the left and right outer coupling frames 8, a crushed soil pressure-reducing roller device 16 is attached via left and right connecting plates 15.

  As shown in FIGS. 1 to 3, the plurality of mounting arms 10 are fixed to the rear frame 7 at intervals in the left-right direction, and are fixed downward and alternately forward and backward. .

  That is, the attachment arm 10 is attached to the left and right ends and the center of the rear frame 7 so as to extend downward and forward, respectively, and the attachment arm 10 extends downward and rearward to the left and right inner sides of the rear frame 7, respectively. As installed.

  The front excavation unit 13 and the rear excavation unit 14 constitute a working tool for tillage, and are respectively attached to the rear frame 7 via the attachment arm 10, and as shown in FIG. Are alternately arranged.

  The front excavation unit 13 has a beam 21, a chisel 25, a wing 30 and a cutting knife 26 fixed to the side surface of the mounting arm 10. Similarly, the rear excavation unit 14 has a beam 21, a chisel 25, a wing 30 and a cutting knife 26 fixed to the side surface of the mounting arm 10.

  As shown in FIG. 3, the left and right lower link support brackets 12 are rotatably attached to the front end portions of the left and right inner coupling frames 9 by pivot shafts 19, respectively. As shown in FIGS. 2 and 3, lower link mounting pins 20 are provided at the front ends of the left and right lower link support brackets 12, and are connected to the lower link 5 by the lower link mounting pins 20.

  As shown in FIGS. 2 and 3, a mast fixing shaft 23 that fixes the mast 11 is bridged and fixed between the support brackets 12 of the left and right lower links 5. The mast 11 is fixed to the mast fixing shaft 23 so that the lower end portion of the mast 11 extends upward.

  In the middle of the mast 11 in the vertical direction, a pin hole for an upper link mounting pin is provided. The mast 11 is rotatably attached to the upper link 4 by an upper link attaching pin 24 inserted through the pin hole. A pin hole of a front pin 27 for attaching the work implement side expansion / contraction tool is provided at the upper end portion of the mast 11.

  The work implement side extension tool support bracket 17 is fixed upward at the center in the left-right direction of the rear frame 7. The work implement side extension tool support bracket 17 is provided with a pin hole for the rear pin 28 for attaching the work implement side extension tool.

  The work implement side expansion / contraction tool 18 has the same configuration as the turnbuckle, and as shown in FIGS. 2 and 3, includes a cylinder portion 32 having a handle 31, a front rod 33, and a rear rod 34. Screws in opposite directions are formed on the front end side and the rear end side. The rear portion of the front rod 33 is screwed to the front end side of the tube portion 32, and the front portion of the rear rod 34 is screwed to the rear end side of the tube portion 32.

  When the work implement side expansion / contraction tool 18 is rotated to one side by the handle 31, its length is shortened, and when it is rotated to the other side, its length is increased. In addition, the working machine side expansion / contraction tool 18 may have the same configuration as the turnbuckle as described above, or may be an expansion / contraction tool using a hydraulic cylinder (not shown).

  The front rod 33 of the work implement side extendable tool 18 is rotatably attached to the upper end portion of the mast 11 by the work implement side extendable tool attaching front pin 27. Further, the rear rod 34 of the work implement side expansion / contraction tool 18 is rotatably attached to the work implement side expansion / contraction tool support bracket 17 by a work implement side expansion / contraction tool attachment rear pin 28.

(Function)
The operation of the stable cultivating machine 1 configured as described above will be described. When performing the tilling work in the field, first, the stable cultivating machine 1 is connected to the tractor 2 via the three-point hitch link 3.

  Specifically, first, the left and right lower link support brackets 12 of the stable cultivator 1 are attached to the lower link 5 by the lower link attachment pins 20. Next, the mast 11 is attached to the upper link 4 by the upper link attaching pin 24.

  And in order to adjust the posture of tilling, the angle of the stable cultivating machine 1 with respect to the field scene is adjusted. For this purpose, the handle 31 of the work implement side telescopic tool 18 is rotated and rotated to one side or the other side. Then, the front rod 33 and the rear rod 34 are pulled into the cylindrical portion 32 (see the thick solid line arrow in FIG. 3) or pulled out (see the thin solid line arrow in FIG. 3), and The overall length is shortened or lengthened.

  For example, in FIG. 3, when the overall length of the work implement side telescopic tool 18 is shortened (see the thick solid line arrow in FIG. 3), the left and right lower link support brackets 12, the mast fixing shaft 23, and the mast 11 are 3 Although it does not move because it is supported by the point hitch link 3, the left and right outer coupling frames 8, together with the left and right inner coupling frames 9 with respect to the left and right lower link support brackets 12, with the pivot shaft 19 as the center. The front frame 6, the rear frame 7, the left and right connecting plates 15, and the crushed soil pressure-reducing roller device 16 are integrally rotated counterclockwise (see a thick solid line arrow U in FIG. 3).

  Accordingly, the stable cultivating machine 1 rotates counterclockwise around the pivot shaft 19 in FIG. 3 to change the angle of the stable cultivating machine 1 with respect to the field scene, and the height is increased. Sometimes it can be adjusted to be horizontal with the field.

  On the other hand, in FIG. 3, when the overall length of the work implement side expansion / contraction tool 18 becomes long (see the thin dotted arrow in FIG. 3), the pivot shaft 19 is centered with respect to the left and right lower link support brackets 12. In addition, the left and right outer coupling frames 8, the front frame 6, the rear frame 7, the left and right coupling plates 15, and the crushed soil pressure-reducing roller device 16 together with the left and right inner coupling frames 9 integrally rotate clockwise (FIG. 3). (See thin solid arrow D).

  Accordingly, the stable cultivator 1 rotates clockwise around the pivot shaft 19 in FIG. 3 to change the angle of the stable cultivator 1 with respect to the field scene, and the height becomes lower. It can be adjusted to be horizontal with the field.

  According to the stable cultivating machine 1 of the present invention, there is no need to adjust the tractor-side telescopic tool 29 of the upper link 4 in the three-point hitch link 3 of the tractor 2, and the tractor-side telescopic tool 29 of the upper link 4 has a certain length. Even so, by adjusting the length of the work implement side expansion / contraction tool 18, the angle of the stable cultivate work implement 1 with respect to the field scene can be easily adjusted without being obstructed by the wheels of the tractor 2.

  Therefore, when using the three-point hitch link 3 of the tractor 2 in which the upper link 4 is not provided with the tractor-side expansion tool 29, or even if the upper link 4 is provided with the tractor-side expansion tool 29, the adjustment work Is difficult to adjust because it is rusted, difficult to adjust near the wheel of the tractor 2, or in the case of a hydraulic extension device that cannot be adjusted due to a malfunction of the hydraulic mechanism, etc. It is possible to easily adjust the angle of the stable cultivating machine 1 with respect to the field scene simply by adjusting the length of.

  Further, the upper link 4 is provided with a tractor-side stretchable tool 29. In addition to the adjustment work, the length of the work implement-side stretchable tool 18 can be further adjusted.

  As mentioned above, although the form for implementing the field work machine concerning this invention was demonstrated based on the Example, this invention is not limited to such an Example, The technique described in the claim It goes without saying that there are various embodiments within the scope of the subject matter.

  Since the field work machine according to the present invention is configured as described above, the field work machine is not limited to a stubble cultivator, but is provided with a work tool for other tillage, such as a subsoiler work machine, a subsoil work machine also serving as a stable cultivator. It can also be applied to a working machine, and the tilling depth by the working tool can be adjusted.

DESCRIPTION OF SYMBOLS 1 Stable cultivator 2 Tractor 3 3 point hitch link 4 Upper link 5 Lower link 6 Front frame 7 Rear frame 8 Left and right outer coupling frame 9 Left and right inner coupling frame 10 Mounting arm 11 Mast 12 Left and right lower link support bracket 13 Forward excavation Unit 14 Back excavation unit 15 Left and right connecting plate 16 Roller unit for crushing soil pressure 17 Work implement side telescopic tool support bracket 18 Work implement side telescopic tool 19 Pivot shaft 20 Lower link mounting pin 21 Beam 23 Mast fixed shaft 24 Upper link mounting Pin 25 for chisel 26 Cut knife 27 Front pin for attaching work implement side telescopic tool 28 Rear pin for attaching work implement side telescopic tool 29 Tractor side telescopic tool 30 Wing 31 Handle 32 Cylindrical part 33 Front rod 34 Back rod 40 Conventional Star Bull cultivator 41 Mast of conventional stable cultivator

Claims (6)

Frame, left and right lower link support brackets rotatably attached to the frame, mast fixed to the left and right lower link support brackets, work implement side telescopic tool support bracket fixed to the frame, and work implement side extendable A farm work implement that is coupled to the tractor via a three-point hitch link attached to the tractor, and a working tool for tillage supported by the frame,
The mast is attached to the upper link of the 3-point hitch link, and the left and right lower link support brackets are attached to the lower link of the 3-point hitch link.
Between the mast and the work implement side extension tool support bracket, a work implement side extension tool whose length can be adjusted in the front-rear direction is provided.
By adjusting the length of the work implement side telescopic tool, the angle of the field work implement relative to the field scene can be adjusted by rotating the frame up and down with respect to the 3-point hitch link, mast, and left and right lower link support brackets. A field work machine characterized by that. The frame has a front frame, a rear frame, and left and right coupling frames arranged in a front-rear direction for coupling the front frame and the rear frame;
The lower link support bracket is rotatably attached to the coupling frame,
The field work machine according to claim 1, wherein the work implement side extension tool support bracket is fixed to the rear frame.   The field work machine according to claim 1 or 2, wherein a mast fixing shaft is bridged and fixed between the left and right lower link support brackets, and the mast is fixed to the mast fixing shaft.   The work implement side expansion / contraction tool includes a cylinder portion with a handle, a front rod and a rear rod, and screws in opposite directions are formed on the front end side and the rear end side of the tube portion, and the front end side of the cylinder portion The rear part of the front collar is screwed to the rear end of the cylinder part, and the front part of the rear collar is screwed to the rear end side of the cylinder part. Field work machine.   The field work machine according to any one of claims 1 to 4, wherein the upper link to which the mast is attached is provided with a tractor-side expansion / contraction tool.   6. The field work machine according to claim 1, wherein the working tool for tillage supported by the frame includes a beam and a chisel attached to the beam.

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