JP5437827B2 - Agricultural machine - Google Patents

Description

  The present invention relates to an agricultural machine that can prevent a side plate of a second leveling body from colliding with a heel and causing the heel to collapse.

  DESCRIPTION OF RELATED ART Conventionally, the agricultural machine which is an alternative ground preparation apparatus described in patent document 1, for example is known.

  This conventional farm work machine can be turned up and down at the rear end of the machine body connected to the rear part of the tractor which is a traveling vehicle, the tiller body rotatably provided on the machine body, and the tiller body cover part of the machine body And a second leveling body (rake) provided at the rear end of the first leveling body so as to be rotatable in the vertical direction.

  And as shown in FIG. 8, the 2nd leveling body 1 is the leveling main body board 2 of the left-right direction longitudinal shape, and the flat side plate provided in the left-right direction both ends of the leveling main body board 2 and located along the front-back direction. (Rake side plate) 3.

JP 2000-125609 A (FIG. 4)

  However, in the conventional farm work machine, for example, during the earthing work in which the second leveling body 1 is fixed in the vertical position, or in the scraping work in which the second leveling body 1 is changed from the vertical position to the horizontal position. At the start, the rear end portion (lower end portion) 3a of the side plate 3 of the second leveling body 1 may hit the lower side of the side surface portion of the kite, and the kite may collapse.

  This invention is made | formed in view of such a point, and an object of this invention is to provide the agricultural machine which can prevent that the side plate of a 2nd leveling body hits a ridge, and a heel collapse | crumbles.

請 Motomeko 1 agricultural machine according includes a first leveling member, this first leveling member pivotally mounted in the vertical direction, and a second leveling member having a side plate in the lateral direction end portions, said side plates a rear end portion, agricultural machine which is located laterally inside of a front end portion of the side plate, the side plate of the second leveling member includes a first plate portion located along the longitudinal direction, the first And a second plate portion positioned diagonally inward from the rear end portion of the plate portion.

The agricultural machine according to claim 2 includes a first leveling body and a second leveling body provided on the first leveling body so as to be rotatable in the vertical direction and having a side plate at an end portion in the left-right direction. rear end portion, a farm machine located inside side of a front end portion of the side plate, the side plate of the second leveling member includes a first plate portion located along the longitudinal direction, the first plate A second plate portion positioned inward from the rear end portion of the first portion and a third plate portion positioned rearward from the inner end portion of the second plate portion.

請 Motomeko 3 agricultural machine described in claim 1 or 2 agricultural machine described in the side plate of the second leveling member is one that consists of only one plate member.

According to the invention of 請 Motomeko 1, since the rear end portion of the side plate of the second leveling member is a structure located laterally inside the front end portion of the side plate, the side plate of the second leveling member is collapsed ridges against the ridge And a second plate in which the side plate of the second leveling body is positioned in the front-rear direction and the rear plate is inclined inward from the rear end portion of the first plate portion. Therefore, it is possible to appropriately prevent the side plate of the second leveling body from hitting the heel and collapsing the heel.

According to the invention of claim 2, since the rear end portion of the side plate of the second leveling member is a structure located laterally inside the front end portion of the side plate, the side plate of the second leveling member is collapsed ridges against the ridge And a second plate portion that is positioned inward from the rear end portion of the first plate portion and the side plate of the second leveling body along the front-rear direction. Since it is the structure which has the 3rd board part located toward the back from the inner side edge part of a 2nd board part, it can prevent appropriately that a side plate of a 2nd leveling body hits a ridge | wrinkle, and a fold | crude collapses.

According to the invention of 請 Motomeko 3, since the side plate of the second leveling member is composed of only one plate member, configuration is simple, it is good manufacturability.

It is a top view of the agricultural working machine which concerns on one embodiment of this invention. It is a side view of an agricultural working machine same as the above. It is a top view which shows the expansion | deployment state of the extended leveling body of a farm working machine same as the above. It is a top view which shows the folding state of the extension leveling body of an agricultural working machine same as the above. It is a rear view of the 2nd leveling body at the time of the earthing work of an agricultural working machine same as the above. It is a rear view of the 2nd leveling machine at the time of the earthing work of the agricultural working machine concerning other embodiments of the present invention. It is a rear view of the 2nd leveling body at the time of the earthing work of the agricultural machine concerning the related technology of the present invention. It is a rear view of the 2nd leveling body at the time of the earthing work of the conventional agricultural working machine.

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

  In FIGS. 1 and 2, reference numeral 10 denotes an agricultural working machine. The agricultural working machine 10 is, for example, an auxiliary scraper (an alternative ground preparation device) that is used by being connected to the rear portion of a tractor (not shown) that is a traveling vehicle.

  Agricultural equipment 10 selectively performs scraping work and earthing work while moving forward in the traveling direction by forward traveling of the tractor in a field such as a paddy field while being connected to the rear part of the tractor. .

  FIG. 2 shows a state in which the farm work machine 10 is supported by a stand 9 with a caster, and the stand 9 is removed or obstructed during work for scraping or earthing. It can be mounted upside down so that it does not fall.

  As shown in FIG. 1 and FIG. 2, the farm work machine 10 includes a machine body 11 connected to a three-point link part (work machine lifting device) at the rear of the tractor.

  The airframe 11 has a chain case portion 12 at the left end portion and a bracket portion 13 at the right end portion. Between the left and right chain case portions 12 and the bracket portion 13, power from the input shaft 14 side is applied in a predetermined direction. A rotary cultivating body 16 for performing a cultivating operation while rotating in a rotatable manner is provided.

  The tilling body 16 has a left and right longitudinal rotating shaft 17 that is rotatably supported by the chain case portion 12 and a right end portion that is rotatably supported by the bracket portion 13, and a radial shape on the rotating shaft 17. And a plurality of tilling claws 18 projecting from each other. The rotary shaft 17 is connected to the input shaft 14 via power transmission means (not shown) including a chain in the chain case portion 12, a transmission shaft in the frame pipe portion 15, and the like. The input shaft 14 is connected to the PTO shaft of the tractor via power transmission means (not shown) including a joint.

  Further, the machine body 11 has a cover portion 19 that is a cultivating body cover portion that covers the cultivating body 16. At the rear end portion of the cover part 19, there is a leveling body 21 that performs leveling work while rotating up and down with respect to the body 11 so as to follow the field scene behind the tillage body 16 at the time of the scraping work. It is provided so as to be rotatable in the vertical direction via a rubber plate 22 which is an elastic plate.

  The leveling body 21 is a first leveling body (level plate) having a substantially horizontal plate shape that is provided in the rear end portion of the cover portion 19 of the machine body 11 so as to be pivotable in the vertical direction about a horizontal axis 26. ) 23 and the rear end of the first leveling body 23 are provided so as to be pivotable in the vertical direction about the axis 27 in the left-right direction. The working width is substantially the same as the first leveling body 23 (length in the left-right direction). And a substantially flat plate-shaped second leveling body (rake) 24.

  The first leveling body 23 and the second leveling body 24 are allowed to rotate up and down with respect to the machine body 11 (a free state) and the earthing work state is fixed to the machine body 11 (a locked state). The leveling body setting means 20 is set so as to be positioned over the airframe 11 and the second leveling body 24.

  The leveling body setting means 20 has, for example, an operation lever (not shown), and when the operator switches the operation lever to the earthing position, the first leveling body 23 and the second leveling body 24 are set to the earthing work state. Then, the first leveling body 23 is fixed to the body 11 and the second leveling body 24 is fixed to the first leveling body 23. At this time, the second leveling body 24 is fixed to the earthing state of a vertical posture that is positioned substantially along the vertical plane so that the front end becomes the upper end and the rear end becomes the lower end. Then, at the time of earthing work, the second leveling body 24 performs earthing work (leveling work) while being fixed to the vertical earthing state (state shown by a solid line in FIG. 2).

  If the operator returns the operation lever to the scraping position, the first leveling body 23 and the second leveling body 24 can return to the scraping work state. At the time of the scraping work, the second leveling body 24 is a scraping work state in a horizontal posture that is positioned substantially along the horizontal plane, and the scraping work (leveling work) while rotating up and down to follow the farm scene. (The state indicated by the two-dot chain line in FIG. 2).

  Note that the leveling body setting means 20 does not have an operation lever, and the first leveling body 23 and the second leveling body 24 are in a state of scraping work by hydraulic pressure from a tractor based on the operation of remote control means such as an electric remote controller. The structure set to the earthing | working work state may be sufficient.

  Moreover, in the state which protruded outward from the left-right direction edge part of the 2nd leveling body 24 in the left-right direction both ends of the 2nd leveling body 24, and extended the left-right direction length of this 2nd leveling body 24, A pair of left and right substantially plate-like extended leveling bodies (extended rakes) 31 that perform a scraping operation together with the second leveling body 24 are provided so as to be rotatable in the vertical direction about a shaft 32 in the front-rear direction.

  The extended leveling body 31 is rotatably connected to the left and right end portions of the second leveling body 24 via a shaft 32 and shaft support plates 35, 36, and 37. In addition, one end of a coil spring 33, which is a tension spring, is attached to the side plate 40 at the left and right end of the second leveling body 24 as a biasing means for maintaining the state of the extended leveling body 31. The other end of the coil spring 33 is attached to the spring attachment portion 34 of the extended leveling body 31.

  As shown in FIG. 3, the extended leveling body 31 is rotated by about 180 degrees in the unfolding direction around the shaft 32 at the time of the scraping work with the maximum working width. The working state (deployed state) that protrudes outward from the direction end is set, and the desired working state is maintained by the biasing force of the coil spring 33.

  Further, as shown in FIG. 4, the extended leveling body 31 is rotated on the second leveling body 24 by rotating approximately 180 degrees in the folding direction around the shaft 32 during the earthing work and during the non-working. The non-working state (folded state) positioned so as to overlap the two leveling bodies 24 is set, and the desired non-working state is maintained by the biasing force of the coil spring 33. Further, the extended leveling body 31 is set to the non-working state not only during the earthing work and during non-working, but also when performing the scraping work near the fence.

  Note that the switching of the state of the extended leveling body 31 may be performed manually by an operator or may be performed by power from a driving unit such as a motor.

  Here, as shown in FIGS. 1 to 4, the second leveling body 24 includes a left-right longitudinal leveling main body plate 41 having substantially the same working width as the first leveling body 23, and the leveling main body plate 41. The bent plate-like side plates 40 are provided so as to be perpendicular to the ground leveling main plate 41 at both left and right ends. That is, a pair of left and right side plates 40 that are opposed to each other and are opposed to each other are fixed to a longitudinal end portion of the leveling main body plate 41 by welding or the like. The longitudinal dimension of the side plate 40 and the longitudinal dimension of the leveling main body plate 41 are substantially the same.

  The rear end portion of the leveling main body plate 41 is formed, for example, in an uneven shape so that the mud can be smoothly discharged rearward.

  Each of the left and right side plates 40 has a bilaterally symmetric shape, and each of them is, for example, a metal that is bent at an acute angle only at one bent portion 43 in the middle in the front-rear direction (one place on the rear side from the center in the front-rear direction). It is composed of only one plate member 42 made of the product. The position of the bent portion 43 is not limited to the position on the rear side from the center in the front-rear direction, and may be the center position in the front-rear direction or the position on the front side from the center in the front-rear direction.

  That is, the side plate 40 that the second leveling body 24 has at the end portion in the left-right direction is formed by bending the first plate portion 46 positioned along the front-rear direction and the bent portion 43 from the rear end portion of the first plate portion 46. It has the 2nd board part 47 located integrally toward the back diagonally inner side. Therefore, when the second leveling body 24 is in a scraping operation state, that is, in a horizontal posture, the rear end portion of the side plate 40 is inward of the front end portion of the side plate 40 in the plan view (the left and right sides of the second leveling body 24 being the inner side). Located in the direction center side).

  In addition, the bending angle θ of the bent portion 43 of the side plate 40, that is, the angle θ formed by the first plate portion 46 and the second plate portion 47 is, for example, 10 degrees to 45 degrees, and preferably approximately 20 degrees. That is, this angle θ is preferably the same angle as the inclination angle of the side surface portion (side surface) of the heel with respect to the vertical direction or a slightly larger angle.

  Further, as is apparent from FIG. 2, the front end portion of the first plate portion 46 of the vertical side plate 40 of the second leveling body 24 is the rear end portion of the vertical side plate 23a of the first leveling body 23 as viewed from the side. The front end portion of these side plates 40 and the rear end portion of the side plate 23a are connected via a shaft 27 so as to be rotatable.

  Further, a spring hole 48 is formed in the upper central portion of the second plate portion 47 of the side plate 40 of the second leveling body 24, and one end portion of the coil spring 33 is attached to the spring hole 48. Similarly, a spring hole portion 49 is formed in the spring mounting portion 34 of the extended leveling body 31, and the other end portion of the coil spring 33 is attached to the spring hole portion 49.

  Next, the operation of the agricultural machine 10 will be described.

  For example, when using the agricultural work machine 10 to perform the scraping work with the maximum working width, the first leveling body 23 and the second leveling body 24 are set to the scraping work state, and the left and right extended leveling bodies 31 are set to the working state. Set.

  Then, when the farm work machine 10 is moved forward in the traveling direction by the forward traveling of the tractor in the farm field, the tilling work is performed by the tiller 16, and the first leveling body 23 and the horizontal posture are placed behind the tiller 16. The scraping work is performed by the second leveling body 24 and the extended leveling body 31.

  In addition, when performing the scraping work in the vicinity of the heel (at the side of the ridge), the left and right extended leveling bodies 31 are set to the non-working state by folding them on the second leveling body 24, and only the second leveling body 24 in the horizontal posture is set. Do the scratching work.

  In addition, when carrying out earthing work using the agricultural machine 10, the first leveling body 23 and the second leveling body 24 are set to the earthing work state, and the left and right extended leveling bodies 31 are set to the non-working state. Set.

  Then, when the farm work machine 10 is moved forward in the traveling direction by the forward traveling of the tractor in the farm field, the earthing work is performed on the second leveling body 24 in the vertical posture substantially along the vertical direction. That is, by the second leveling body 24 in the vertical posture rotated and set with respect to the first leveling body 23 so that the front end becomes the upper end and the rear end becomes the lower end, Earthing work is performed.

  Here, as shown in FIG. 5, the rear end portion which is the lower end portion 40 a of the side plate 40 of the second leveling body 24 is the upper end portion of the side plate 40 even when the earthing work is performed near the eaves. Since it is located on the inner side (on the opposite side) than the front end part that is 40b, the rear end part of the side plate 40 of the second leveling body 24 does not hit the lower side of the side surface part of the saddle. There is no such thing as breaking side walls with 24 side plates 40.

  Similarly, at the start of the scraping operation in which the second leveling body 24 changes its posture from the vertical position to the horizontal position in the vicinity of the reed, the rear end portion of the side plate 40 of the second leveling body 24 is located on the side surface of the reed. The second leveling body 24 in a horizontal position is not hit by the side plate 40 of the second leveling body 24 without being hit by the lower side, and the horizontal leveling is also performed even when turning by the tractor in the middle of the scraping work in the vicinity of the side of the side. The rear end portion of the side plate 40 does not hit the side surface portion of the kite, and the side plate 40 of the second leveling body 24 does not break the kite.

  And according to such a farming machine 10, since it is the structure where the rear end part of the side plate 40 of the 2nd leveling body 24 is located inside the front end part of the side plate 40, the side plate 40 of the 2nd leveling body 24 It is possible to prevent the wrinkles from collapsing upon hitting the wrinkles, and for example, to prevent the side plates 40 of the second leveling body 24 from hitting the concrete wrinkles or the like and damaging the side plates 40.

  In addition, a first plate portion 46 in which the side plate 40 of the second leveling body 24 is positioned along the front-rear direction, and a second plate portion 47 positioned inwardly obliquely inward from the rear end portion of the first plate portion 46, Therefore, it is possible to appropriately and effectively prevent the side plate 40 of the second leveling body 24 from hitting the heel and causing the heel to collapse.

  Furthermore, since the side plate 40 of the second leveling body 24 is composed of only one plate member 42, the number of parts is smaller and the configuration is smaller than when a plurality of plate members are connected by welding or the like. Easy and manufacturable.

  Note that the side plate 40 of the second leveling body 24 is located in a first plate portion 46 positioned along the front-rear direction as shown in FIG. 5 and from the rear end portion of the first plate portion 46 toward the rear obliquely inward direction. It is not limited to what has the 2nd board part 47 to perform, For example, even if it shows in FIG. 6, there can exist an effect similar to the thing of FIG.

  The side plate 40 of the second leveling body 24 shown in FIG. 6 is, for example, a metal that is bent substantially at right angles at only two bent portions 43a and 43b in the middle in the front-rear direction (two places rearward from the center in the front-rear direction). It is composed of only one plate member 42 made of the product. Note that the positions of the bent portions 43a and 43b are not limited to the positions on the rear side from the center in the front-rear direction, and may be the center positions in the front-rear direction or the positions on the front side from the center in the front-rear direction.

  That is, the side plate 40 of the second leveling body 24 is directed inward by folding the first plate portion 51 positioned along the front-rear direction and the bent portion 43a from the rear end portion of the first plate portion 51. It has the 2nd board part 52 located in one, and the 3rd board part 53 located integrally from the inner side edge part of this 2nd board part 52 toward the back by bending of the bending part 43b. For this reason, when the second leveling body 24 is in a scraping operation state (in a horizontal posture), the rear end portion of the side plate 40 is inwardly of the front end portion of the side plate 40 in the plan view (the second leveling body which is inside). It is located at the center of 24 left and right direction).

  When the second leveling body 24 is in the earthing work state (vertical posture), at the start of the scraping work, or at the time of turning in the middle of the scraping work, the rear end portion (lower end part) of the side plate 40 is Since it is located on the inner side of the front end (upper end), the rear end (lower end) of the side plate 40 of the second leveling body 24 does not hit the side surface of the ridge. There is no such thing as breaking down the bag.

  Moreover, even if the side plate 40 of the second leveling body 24 is, for example, as shown in FIG. 7, the same effects as those in FIG. 5 can be obtained.

  The side plate 40 of the second leveling body 24 shown in FIG. 7 is different from the bent plate shape described above, and has a flat plate shape, for example, only one straight plate member 42 that is not bent. It consists of

  That is, the side plate 40 of the second leveling body 24 is configured so that the side plate 40 as a whole gradually extends inward from the front end portion toward the rear end portion, that is, for example, substantially parallel to the side surface portion of the ridge. Is located along a direction inclined with respect to the front-rear direction (the direction along line A in the figure). For this reason, when the second leveling body 24 is in a scraping operation state (in a horizontal posture), the rear end portion of the side plate 40 is inwardly of the front end portion of the side plate 40 in the plan view (the second leveling body which is inside). It is located at the center of 24 left and right direction).

  When the second leveling body 24 is in the earthing work state (vertical posture), at the start of the scraping work, or at the time of turning in the middle of the scraping work, the rear end portion (lower end part) of the side plate 40 is Since it is located on the inner side of the front end (upper end), the rear end (lower end) of the side plate 40 of the second leveling body 24 does not hit the side surface of the ridge. There is no such thing as breaking down the bag.

  The inclination angle θ of the side plate 40 with respect to the front-rear direction, that is, the angle θ formed between the plate member 42 and the A line is, for example, 10 degrees to 45 degrees, preferably about 20 degrees. That is, this angle θ is preferably the same angle as the inclination angle of the side surface portion (side surface) of the heel with respect to the vertical direction or a slightly larger angle.

  Further, the side plate 40 of the second leveling body 24 is constituted by only one plate member bent at, for example, three or more bent portions in the middle in the front-rear direction, or the rear end portion is arcuate or curved. It may be composed of only one bent plate-shaped plate member.

  In addition, the configuration is not limited to the configuration in which the shaft 32 that is the rotation center axis of the extended leveling body 31 is disposed on the inner side of the side plate 40. For example, a configuration in which the shaft 32 is disposed above the side plate 40 may be used. Therefore, it is necessary to cut out the corner portion on the rear side of the inner end portion of the extended leveling body 31 so as to correspond to the shape of the side plate 40 so that the corners of the extended leveling body 31 in the folded state are not broken.

  Furthermore, the farm working machine 10 may have a configuration that does not include the extended leveling body 31, for example, or may have a configuration that can be folded in, for example, a three-division type.

10 Farm machine
23 First leveling body
24 Second leveling body
40 side plate
42 Plate member
46,51 First plate
47, 52 Second plate
53 Third plate

Claims (3)

A first leveling body;
The first leveling body is provided so as to be pivotable in the vertical direction, and includes a second leveling body having a side plate at the left and right direction ends,
A rear working portion of the side plate is an agricultural machine located on the inner side of the front end portion of the side plate,
The side plate of the second ground leveling body,
A first plate portion positioned along the front-rear direction;
Agricultural working machine you; and a second plate portion located toward the rear obliquely inward direction from the rear end of the first plate portion. A first leveling body;
The first leveling body is provided so as to be pivotable in the vertical direction, and includes a second leveling body having a side plate at the left and right direction ends,
A rear working portion of the side plate is an agricultural machine located on the inner side of the front end portion of the side plate,
The side plate of the second ground leveling body,
A first plate portion positioned along the front-rear direction;
A second plate portion located inward from the rear end portion of the first plate portion;
Agricultural working machine you; and a third plate portion located rearward from the inner end portion of the second plate portion. The agricultural machine according to claim 1 or 2 , wherein the side plate of the second leveling body is composed of only one plate member.

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