JP2011250749A - Farm working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a farm working machine capable of preventing the earth from spreading forward.SOLUTION: The farm working machine 1 includes a machine body 2 connected to a tractor. The machine body 2 includes a plowing body 11 for plowing while rotating in an upcutting direction. The machine body 2 includes a leveling body 16 for leveling in the rear of the plowing body 11. The machine body 2 includes a tamping device 30 for tamping an uneven surface of field in front of the plowing body 11. A lower end side of the plowing cover body 51 for covering the plowing body 11 is positioned between the tamping device 30 and the plowing body 11. The tamping device 30 comprises a plurality of tamping wheels 26 arranged in a longitudinal direction.

Description

  The present invention relates to a farm machine that can prevent soil splashed up by a tilled body from scattering forward.

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

  This conventional farm work machine includes a machine body connected to the rear part of a tractor that is a traveling vehicle, a tiller body that is rotatably provided in the machine body and performs a tilling work (plowing and crushed soil work) while rotating in an upcut direction, A leveling body that performs leveling work behind the body and a tillage cover body such as an elastic cover plate that covers a front portion and an upper portion of the tillage body are provided.

JP 2004-241904 A

  For example, after performing reverse plowing (plowing work for turning the upper-layer soil upside down) using straw, plows, etc., then using the conventional farming machine, the uneven field surface portion after the reverse plowing In order to avoid running resistance due to soil and other impurities, the soil and other impurities on the surface of the field will hit the front side of the cultivation cover when the position of the cultivation cover is low. In addition, it is necessary to raise the position of the tillage cover body.

  However, when the position of the tillage cover body is increased, there is a risk that the soil that is spun up by the tillage body that rotates in the upcut direction will scatter forward.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can prevent that the soil splashed up by a tilling body splashes ahead.

  The agricultural machine according to claim 1 is a machine body connected to a traveling vehicle, a tiller body rotatably provided in the machine body and performing a tilling work while rotating in an upcut direction, and a leveling work behind the tillage body. A ground leveling body, a pressure suppression means for suppressing the uneven surface of the field in front of the tillage body, and a tillage cover body at least partially positioned between the pressure suppression means and the tillage body It is.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the pressure reducing means is composed of a plurality of pressure reducing wheels arranged in the left-right direction.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1, wherein the pressure reducing means is composed of one pressure reducing wheel whose length in the left-right direction is substantially the same as the length in the left-right direction of the tillage body. It is.

  The farm machine according to claim 4 is the farm machine according to claim 2 or 3, wherein the pressure reducing wheel can be adjusted in the vertical position with respect to the machine body.

  The farm machine according to claim 5 is the farm machine according to any one of claims 1 to 4, wherein the farm machine is provided at both ends in the left-right direction of the machine body so as to be vertically rotatable, and a space between the pressure reducing means and the tillage body. Left and right side cover bodies that cover the side portions of the side cover, and a left and right side longitudinal connecting body that connects both side cover bodies, and a lower end portion of the tillage cover body is attached to the connecting body, and the side cover The front end portion of the body and the pressure suppressing means are positioned so as to overlap in a side view.

  According to the invention which concerns on Claim 1, since it has the suppression means which suppresses an uneven | corrugated field surface part ahead of a tilling body, the position of a tilling cover body can be made low, and it jumps up with a tilling body with the tilling cover body It is possible to prevent the soil from being scattered forward, and further, the pressure reducing means breaks up the soil mass on the surface portion of the field, so that the tillage level can be improved.

  According to the invention according to claim 2, since the pressure-reducing means is composed of a plurality of pressure-reducing wheels arranged in the left-right direction, the plurality of pressure-reducing wheels can appropriately relieve the uneven field surface portion after inversion tillage. .

  According to the invention of claim 3, since the pressure reducing means is composed of one pressure reducing wheel whose length in the left-right direction is substantially the same as the length in the left-right direction of the tillage body, the number of parts is small and the structure is simple. In addition, it is possible to appropriately suppress the uneven field surface portion after the reverse tillage by the one suppression wheel.

  According to the invention which concerns on Claim 4, since the presser wheel can adjust an up-and-down position with respect to a body, according to the soil quality etc. of the uneven | corrugated field surface part after inversion tillage, the up-and-down position of the presser wheel is set. It can be adjusted appropriately.

  According to the invention according to claim 5, the side cover body that covers the side part of the space between the pressure suppressing means and the cultivated body causes the soil splashed up by the cultivated body to scatter to the side. Can be prevented.

It is a side view of the agricultural working machine which concerns on the 1st Embodiment of this invention. It is sectional drawing which notched some agricultural work machines same as the above. It is a top view of an agricultural working machine same as the above. It is a front view of an agricultural working machine same as the above. It is a front view of the agricultural machine concerning the 2nd Embodiment of this invention. It is a front view of the agricultural machine based on the 3rd Embodiment of this invention. It is a front view of the agricultural machine based on the 4th Embodiment of this invention.

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

  1 to 4, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is, for example, a tow-type upper rotor (cultivation leveling device) that is connected to the rear part of a tractor (not shown) that is a traveling vehicle. .

  Then, the agricultural machine 1 is connected to the rear part of the tractor and moves forward (leftward in FIG. 1), which is the traveling direction, by the traveling of the tractor, and the unevenness after the reverse plowing by a straw or plow or the like Cultivating and leveling work is performed on the surface portion of the farm.

  In addition, the reverse plowing referred to here is an operation of only plowing that does not involve crushed soil and returns the upper soil to the top and bottom. For this reason, the field surface part after reverse plowing has a concavo-convex shape with a relatively large height difference.

  The agricultural machine 1 includes a machine body 2 having a longitudinal shape that is connected to a three-point link (work machine lifting device) at the rear of the tractor.

  The airframe 2 has a three-point connecting portion 3 connected to a three-point link portion at the rear of the tractor. The airframe 2 has a mission case portion 4 at the center in the left-right direction, and an input shaft 5 in the front-rear direction is rotatably supported by the mission case portion 4. The input shaft 5 is connected to the PTO shaft of the tractor via power transmission means.

  The airframe 2 has a frame pipe portion 6 that is a frame portion having a longitudinal shape connected to the mission case portion 4 in the left-right direction. The upper end portion of the chain case portion 8 which is one side tillage support portion is attached to the left end portion which is one end portion in the left and right direction of the frame pipe portion 6, and the other end portion is attached to the right end portion which is the other end portion in the left and right direction of the frame pipe portion 6. The upper end part of the bracket part 9 which is a side tillage support part is attached.

  And in the lower end part of the chain case part 8 and the lower end part of the bracket part 9, it is in an upcut direction (direction where a front side moves upward) centering on the rotation center axis line X of the left-right direction with the power from the input shaft 5 side. A cultivating body 11 that is a rotary cultivating means for performing a cultivating operation (plowing and crushed soil work) while being driven to rotate is installed rotatably. That is, in the lower part of the machine body 2, a left and right cultivated body 11 having a horizontal dimension that is substantially the same as the width dimension of the machine body 2 is rotatably provided.

  The cultivating body 11 includes a cultivating shaft 12 in a horizontal direction supported rotatably by a lower end portion of the chain case portion 8 and a lower end portion of the bracket portion 9, and a detachable attachment to the cultivating shaft 12. It has a plurality of tilling claws 13 that integrally rotate in the upcut direction and perform the tilling work. A horizontal line passing through the axis of the tilling shaft 12 is the rotation center axis X.

  The machine body 2 also includes an intermediate cover portion 15 that is a substantially plate-like cover that covers the rear upper portion of the tillage body 11. Further, a substantially plate-shaped leveling body (leveling plate) 16 that performs leveling work (leveling work) behind the tillage body 11 is provided at the rear end of the intermediate cover part 15 so as to be rotatable up and down.

  The ground pressure of the leveling body 16 with respect to the field surface portion can be adjusted by a pair of left and right ground pressure adjusting means 19 including a rod 17 and a coil spring 18 and the like. An extended leveling plate 20 is provided at each of the left and right ends of the leveling body 16 so as to be foldable and unfoldable.

  A comb-shaped screen 21 projects downward from the intermediate cover portion 15 of the machine body 2, and the screen 21 is disposed between the tillage body 11 and the leveling body 16. The screen 21 has a plurality of rod-like portions 22 arranged in the left-right direction at equal intervals.

  Further, the airframe 2 has a front frame portion 23 that is a rectangular pipe-shaped frame portion that is located in front of the frame pipe portion 6 in the left-right direction. A plurality of (for example, six) pressure-reducing wheel holder portions 24 are attached to the front frame portion 23 with attachment bolts 25 and the like so that the left and right positions can be adjusted.

  Each presser wheel holder portion 24 of the airframe 2 has a presser wheel (gauge wheel) 26 that presses down the uneven surface of the uneven field after the reverse tilling in front of the cultivator 11 and leveles it flat. Is attached.

  That is, as is apparent from FIGS. 3 and 4, the agricultural machine 1 includes a plurality of, for example, six pressure-reducing wheels 26 (26a, 26b, 26c, 26d, 26e, and 26f) arranged in the left-right direction at intervals. Provided at the front.

  The leftmost pressure wheel 26a is located in the vicinity of the inner side of the chain case portion 8 in front view, and the rightmost pressure wheel 26f is located in the vicinity of the inner side of the bracket portion 9 in front view. Note that the pressure-reducing wheels 26b and 26c that are positioned close to each other are positioned on the left side of the center of the agricultural machine 1 in the left-right direction. The pressure-reducing wheels 26d and 26e that are positioned close to each other are positioned closer to the right side than the center of the agricultural machine 1 in the left-right direction.

  Each pressure-reducing wheel 26 is provided in a vertically long arm portion 32 in which a plurality of pin holes 31 are formed, a handle portion 33 provided at the upper end portion of the arm portion 32, and a lower end portion of the arm portion 32. And a substantially cylindrical wheel portion 35 that is supported by the support shaft portion 34 and performs a pressure-reducing operation while rotating around the support shaft portion 34.

  The wheel portion 35 is rotatably supported in a cantilever state by a corresponding arm portion 32 via a support shaft portion 34, and the outer peripheral surface of the wheel portion 35 is formed in a substantially cylindrical surface shape. Then, the soil adhering to the outer peripheral surface of the wheel portion 35 is scraped off by a substantially plate-shaped scraper 36 which is an attached soil removing means. Note that the support shaft portion 34 that is the rotation center axis of the wheel portion 35 is located at substantially the same height as the rotation center axis X of the tillage body 11.

  The arm part 32 is slidably inserted into the cylindrical part 41 of the pressure-reducing wheel holder part 24. Then, by inserting the set pin 42, which is a detachable pin, into the selected one pin hole 31 and the pin hole 41a of the cylindrical portion 41, the arm portion 32 becomes the cylindrical portion 41 of the pressure reducing wheel holder portion 24. It is held in a fixed manner. That is, the pressure-reducing wheel 26 can be individually adjusted in the vertical position with respect to the pressure-reducing wheel holder portion 24 of the airframe 2 by selecting and changing the pin hole 31 into which the stop pin 42 is inserted. The vertical position adjustment of the pressure reducing wheel 26 can be easily performed using the handle portion 33.

  In addition, the unevenness | corrugation after reverse plowing in front of the cultivation body 11 in the state located over the whole work width (meaning substantially including the whole) of the cultivation body 11 in the several (for example, six) suppression wheels 26 arranged in these left-right directions. Rotating pressure suppressing means 30 is configured to press the flat surface of the field and level it flat.

  Further, the agricultural working machine 1 is a substantially plate-shaped tillage for preventing scattering of soil, at least a part, that is, for example, the lower end side is disposed between the pressure reducing means 30 and the tillage body 11 and covers the front and upper portions of the tillage body 11. A cover body 51 is provided.

  The tillage cover body 51 is, for example, a rubber cover plate that is elastically deformable and has a left-right longitudinal shape. The tillage cover body 51 may be made of, for example, a metal plate.

  Further, as shown in FIG. 2, the rubber tillage cover body 51 has a substantially arc surface centered on the rotation center axis X of the tillage body 11 so as to cover from the front part to the upper part of the tillage body 11. It is arranged in a bent state.

  The upper end portion of the tillage cover body 51 is attached to the front end portion of the intermediate cover portion 15 of the machine body 2. Further, the lower end portion of the tillage cover body 51 is attached to the rear surface of a connecting body (pressing frame) 60 that is a longitudinally long and square pipe connecting the pair of left and right side cover bodies 52. In addition, the lower end 51a of the tillage cover body 51 is located at a position lower than the rotation center axis X of the tillage body 11 (see FIG. 2).

  The side cover body 52 is provided at both ends in the left-right direction of the machine body 2 so as to be able to rotate up and down around a shaft part 54 in the left-right direction, and is vertically moved so as to follow this field surface part while being in contact with the field surface part. The outer side part of the space part 53 between the pressure suppressing means 30 and the tillage body 11 is covered while rotating.

  That is, the left side cover body 52 is provided on the chain case portion 8 of the machine body 2 so as to be rotatable up and down around the shaft portion 54 and covers the left side portion of the space portion 53. The right side cover The body 52 is provided on the bracket portion 9 of the airframe 2 so as to be rotatable up and down around the shaft portion 54 and covers the right side portion of the space portion 53.

  Further, the ground pressure of the side cover body 52 against the field surface is adjusted by a pair of left and right ground pressure adjusting means 58 including a rod 56 and a coil spring 57 that is a biasing member that biases the rod 56 downward. It is possible. The side cover body 52 is pivotable up and down around a shaft portion (rotation fulcrum) 54 with respect to the machine body 2 while being biased downward by a coil spring 57.

  Further, the side cover body 52 includes a first plate portion (holding frame side plate) 61 and a second plate portion (extension side plate) 62 attached to the outer surface of the first plate portion 61 so that the vertical position can be adjusted and attached / detached. And have. And the 2nd board part 62 is removed from the 1st board part 61 at the time of deep plowing work, for example.

  In addition, a longitudinal end portion of, for example, a metal coupling body 60 is fixed to substantially the center of the inner surface of the first plate portion 61, and the front surface of the lower end portion of the tillage cover body 51 is attached to the rear surface of the coupling body 60. That is, one connecting body 60 is installed on the left and right side cover bodies 52, and the both side cover bodies 52 are integrally connected by the connecting body 60.

  Further, the rod connecting portion 64 protrudes upward from two locations of the connecting body 60, and the lower end portion of the rod 56 is rotatably connected to the rod connecting portion 64. The upper end portion of the rod 56 is inserted into a cylindrical portion 65 protruding from the frame pipe portion 6 of the body 2.

  Note that the front end portions of the pair of left and right side cover bodies 52 are located in the vicinity of the outer side of the pressure suppressing means 30. That is, the front end portion of the side cover body 52 and the pressure suppressing means 30 are positioned so as to overlap in a side view. Further, the rear end portion of the side cover body 52 and the tillage body (movement area of the tillage claws 13) 11 are positioned so as to overlap each other in a side view.

  In addition, the farm work machine 1 includes a pair of left and right rear side cover plates (side plates) 68 that cover the outer side portion of the space 66 between the tilled body 11 and the leveling body 16.

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

  The farm work machine 1 is used in a field where reverse plowing is performed using, for example, a straw or a plow.

  When this agricultural work machine 1 is connected to the rear part of the tractor and moved forward by the forward traveling of the tractor, the pressure-reducing work is performed by the plurality of pressure-reducing wheels 26 constituting the pressure-reducing means 30, so Then, the field surface portion of the field is leveled, and then the tilling work is performed by the tilling body 11 located behind the pressure wheel 26 and the leveling work is performed by the leveling body 16.

  At this time, the scattering of the soil splashed by the tiller 11 is prevented by the tiller cover 51, the side cover 52, the rear side cover plate 68, the intermediate cover 15 and the leveling body 16.

  In particular, when the tillage body 11 rotates in the upcut direction, the soil tends to fly forward, but the lower end 51a of the tillage cover body 51 is located at a position lower than the rotation center axis X of the tillage body 11, The tillage cover body 51 effectively prevents forward soil scattering.

  In addition, since the uneven field surface portion after the inverted tillage is pressed and leveled by the pressure reducing wheel 26 in front of the lower end side of the tillage cover body 51 and in front of the coupling body 60, soil and dirt on the field surface portion are reduced. There is no problem that the object hits the lower end side front surface of the tillage cover body 51 and the front surface of the coupling body 60 and becomes a running resistance of the tractor, and the flow of soil toward the tiller body 11 side becomes smooth.

  Thus, according to the agricultural working machine 1, the position of the lower end 51a of the tillage cover body 51 (that is, the position of the connecting body 60 that supports the lower end portion of the tillage cover body 51) is compared with the rotation center axis X of the tillage body 11. Even if the height is low, the soil and other impurities on the surface of the field do not hit the lower front surface of the tillage cover body 51 and the front surface of the coupling body 60, and the lower tillage cover body 51 jumps at the tillage body 11. The raised soil can be prevented from scattering forward, and the pressure reducing wheel 26, which is the pressure reducing means 30, breaks up the soil mass on the surface of the field, thus improving the tilling property (crushability and leveling). be able to.

  Moreover, since the pressure-reducing means 30 is composed of a plurality of pressure-reducing wheels 26 arranged in the left-right direction, the plurality of pressure-reducing wheels 26 can appropriately relieve the uneven field surface portion after inverted tillage.

  Furthermore, since each presser wheel 26 can be individually adjusted in the vertical position with respect to the airframe 2, the vertical position of each presser wheel 26 can be adjusted according to the soil quality of the uneven surface of the field after inversion tillage. It can be adjusted appropriately and easily.

  In addition, the side cover body 52 that covers the left and right sides of the space 53 between the pressure reducing means 30 and the tillage body 11 prevents the soil splashed up by the tillage body 11 from scattering to the side. it can.

  Furthermore, for example, because the step surface of the field is stepped with the pressure wheel 26 to the same height as the recessed part in the work mark in the previous process such as the tire mark of the tractor or the broccus work, the rate of crushed soil by the tiller 11 becomes almost constant, The leveling by the leveling body 16 is also improved.

  Moreover, in the cultivation body 11 that rotates in the upcut direction, the cultivation depth is difficult to stabilize because the tillage claw 13 bites (deeply plows) compared to the rotation in the downcut direction. Since the plurality of pressure-reducing wheels 26 functioning as wheels are provided, the tilling depth is stable and proper tillage work can be performed.

  FIG. 5 shows an agricultural machine 1 according to the second embodiment.

  The farm work machine 1 includes two pressure-reducing wheels 26 arranged in the left-right direction, and a pressure-reducing means 30 is configured by the two pressure-reducing wheels 26. Unlike the first embodiment, the wheel portion 35 of each pressure-reducing wheel 26 is rotatably supported by a pair of left and right arm portions 32 via a support shaft portion 34 in a both-end supported state.

  And also with the agricultural machine 1 which concerns on this 2nd Embodiment, there can exist an effect similar to the said 1st Embodiment. For example, although not shown, a configuration including three, four, or five pressure-reducing wheels 26, a configuration including seven or more pressure-reducing wheels 26, or the like may be used.

  FIG. 6 shows an agricultural machine 1 according to the third embodiment.

  The agricultural machine 1 includes a single pressure wheel 26 having a lateral length (axis length) substantially the same as a lateral length (work width) of the tillage body 11, and only this one pressure wheel 26 is provided. Thus, the suppression means 30 is configured. Unlike the first embodiment, the wheel portion 35 of the pressure-reducing wheel 26 is rotatably supported by a pair of left and right arm portions 32 via a support shaft portion 34.

  And in the agricultural machine 1 according to the third embodiment, the same effects as the first embodiment can be obtained, and the number of parts is small and the configuration is simple. By using a single pressure-reducing wheel 26, it is possible to appropriately repress the uneven surface of the field after inversion tillage.

  Further, FIG. 7 shows an agricultural machine 1 according to a fourth embodiment.

  This agricultural working machine 1 includes four pressure-reducing wheels 26 arranged in the left-right direction, and a pressure-reducing means 30 is configured by these four pressure-reducing wheels 26. As in the first embodiment, the wheel portion 35 of each pressure-reducing wheel 26 is rotatably supported in a cantilever state by a corresponding arm portion 32 via a support shaft portion 34. Moreover, this agricultural working machine 1 is provided with a crushed soil body 71 such as left and right lifters for crushed tire marks of a tractor.

  And also with the agricultural working machine 1 which concerns on this 4th Embodiment, there can exist an effect similar to the said 1st Embodiment. In addition, the number of the crushed bodies 71 is arbitrary and may be one or three or more.

1 Agricultural machine 2 Airframe
11 Tillage
16 Leveling body
26 wheel
30 Means of suppression
51 Tillage cover body
52 Side cover body
53 Space
60 Linkage

Claims (5)

A fuselage connected to the traveling vehicle;
A plowing body that is rotatably provided in this machine body and that performs a plowing work while rotating in the upcut direction,
A leveling body that performs leveling work behind this tilled body,
In the front of the tillage body, a pressure reducing means for suppressing the uneven field surface portion,
A farm working machine, comprising at least a tillage cover body positioned between the pressure reducing means and the tillage body. The agricultural working machine according to claim 1, wherein the pressure-reducing means includes a plurality of pressure-reducing wheels arranged in the left-right direction. The agricultural working machine according to claim 1, wherein the pressure reducing means is constituted by one pressure reducing wheel having a length in the left-right direction that is substantially the same as a length in the left-right direction of the tillage body. The farm work machine according to claim 2 or 3, wherein the pressure-reducing wheel is adjustable in vertical position with respect to the machine body. Left and right side cover bodies that are provided so as to be vertically rotatable at both left and right ends of the body, and that cover the side portions of the space between the pressure reducing means and the tillage body,
The left and right direction longitudinally connected body that connects both side cover bodies,
The lower end portion of the tillage cover body is attached to the coupling body,
The agricultural machine according to any one of claims 1 to 4, wherein the front end portion of the side cover body and the pressure-reducing means are positioned so as to overlap in a side view.

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