JP2012024005A - Agricultural implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agricultural implement that performs a proper tilling and leveling operation.SOLUTION: The agricultural implement 1 is equipped with a machine body 2 to be connected to a tractor. The machine body 2 has a transmission case part 5 at one side in the horizontal direction and a bracket part 6 at the other side in the horizontal direction. A tilling body for carrying out a tilling operation while being rotated by power from a transmission means in the transmission case part 5 is disposed between the transmission case part 5 and the bracket part 6. A leveling body 36 performs a leveling operation behind the tilling body. The bracket part 6 of the machine 2 is equipped with a weight means 40 for positioning the center of gravity of the whole agricultural implement 1 at the part in the horizontal direction of the agricultural implement 1.

Description

  The present invention relates to an agricultural machine that can perform appropriate tillage work.

  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, and this machine body has a box-shaped transmission case part that houses transmission means such as a chain on one end in the left-right direction. A plate-like bracket portion is provided on the other end in the left-right direction. In addition, this conventional farm work machine is constructed between a transmission case part and a bracket part, and is cultivated while rotating with power from the transmission means in the transmission case part, and leveling work behind this cultivating body. And leveling body.

Japanese Patent Laying-Open No. 2005-265076 (FIGS. 1 and 2)

  However, in the conventional farm work machine, the transmission case part side is heavier than the bracket part side, and therefore the farm work machine tilts during work, and there is a risk that proper tillage work will not be performed.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can perform suitable tillage work.

  The agricultural machine according to claim 1 has a transmission case part on one end side in the left-right direction, and is installed between the machine body having a bracket part on the other end side in the left-right direction, and between the transmission case part and the bracket part, A tilling body that performs tilling work while rotating with power from the transmission means in the transmission case part, a leveling body that performs ground leveling work behind this tilling body, and the center of gravity of the entire farming machine are located in the center in the left-right direction of the farming machine And a weight means for making them.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the weight means is constituted by a weight attached to the bracket portion.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 2, wherein the bracket portion has a support surface, and the weight body has a convex portion supported by the support surface.

  The farm machine according to claim 4 is the farm machine according to claim 2, wherein the bracket portion has a front support surface and a rear support surface, and the weight body is a front convex portion supported by the front support surface. And a rear convex portion supported by the rear support surface, the front convex portion is supported by the front support surface, and the rear convex portion is supported by the rear support surface. Thus, the weight body is positioned at a predetermined position with respect to the bracket portion.

  The farm machine according to claim 5 is the farm machine according to any one of claims 2 to 4, wherein the weight body has a connection portion to which a lifting tool for lifting the weight body is connected.

  According to the present invention, since the center of gravity of the entire farm work machine is located in the center in the left-right direction of the farm work machine, the farm work machine can be prevented from tilting during work, and appropriate tillage work can be performed.

It is a top view of the agricultural working machine which concerns on the 1st Embodiment of this invention. It is a side view of an agricultural working machine same as the above. It is a figure which shows the power transmission means and weight means of an agricultural working machine same as the above. It is a side view which shows the bracket part and weight means of an agricultural working machine same as the above. It is a side view of a bracket part same as the above. It is an external view perspective view of a weight means same as the above. It is an internal view perspective view of a weight means same as the above. It is a figure which shows the power transmission means and weight means of the agricultural working machine which concern on the 2nd Embodiment of this invention. It is a side view which shows the bracket part and weight means of an agricultural working machine same as the above. It is a side view of a bracket part same as the above. It is an external view perspective view of a weight means same as the above. It is an internal view perspective view of a weight means same as the above. It is a figure which shows the power transmission means and weight means of the agricultural working machine which concern on the 3rd Embodiment of this invention. It is a side view which shows the bracket part and weight means of an agricultural working machine same as the above. It is a figure which shows the power transmission means and weight means of the agricultural working machine which concern on the 4th Embodiment of this invention. It is a top view of the agricultural machine based on the 5th Embodiment of this invention. It is a figure which shows the power transmission means and weight means of the agricultural working machine which concern on the 6th Embodiment of this invention. It is a figure which shows the power transmission means and weight means of the agricultural working machine which concern on the 7th Embodiment of this invention. It is a figure which shows the power transmission means and weight means of the agricultural working machine which concern on the 8th Embodiment of this invention.

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

  In FIG. 1 to FIG. 3, reference numeral 1 denotes a farm machine having a longitudinal shape in the left-right direction. This farm machine 1 is, for example, a cultivator leveling device such as a tow-type rotary connected to a rear portion of a tractor which is a traveling vehicle (not shown). is there. That is, this agricultural work machine 1 is connected to the rear part of the tractor, and is a side drive that performs the tilling work while moving on the farm field toward the front which is the traveling direction (the arrow direction in FIG. 1) by the traveling of the tractor. Type rotary tiller.

  The farm work machine 1 includes a left and right longitudinal body 2 that is detachably coupled to a three-point link (work machine lifting support device) at the rear of a tractor (not shown).

  The airframe 2 has a box-shaped gear case portion 4 such as a transmission case at the center in the left-right direction, and a box-shaped transmission case portion 5 such as a chain case at the left end that is one end side in the left-right direction. A plate-like bracket portion 6 such as a support plate is provided at the right end portion which is the other end side.

  The upper end portion of the transmission case portion 5 that is slightly longer in the vertical direction and the left surface portion of the gear case portion 4 are connected by the left frame pipe portion 8 that is a longitudinal one-side cylindrical portion in the left-right direction. The upper end portion of the slightly long bracket portion 6 and the right surface portion of the gear case portion 4 are connected to each other by a right frame pipe portion 9 that is the other side cylindrical portion that is longitudinal in the left-right direction.

  And between the lower end part of the transmission case part 5 and the lower end part of the bracket part 6, the cultivating body 11 that performs the cultivation work while rotating in a predetermined direction by the power from the transmission means 10 in the transmission case part 5 rotates. It is erected as possible.

  The cultivating body 11 has a horizontal cultivating shaft 12 that is positioned horizontally, and a cultivating claw 14 that is attached to each flange portion 13 of the cultivating shaft 12 and rotates with the cultivating shaft 12 to perform the cultivating work. . A left end portion, which is one end side of the tilling shaft 12 in the left-right direction, is rotatably attached to a lower end portion of the transmission case portion 5 via a bearing or the like, and a right end portion, which is the other end side of the tilling shaft 12 in the left-right direction. It is rotatably attached to the lower end via a bearing or the like. The left end portion of the tillage shaft 12 is inserted into the lower end portion of the transmission case portion 5.

  Here, a left and right transmission shaft (drive shaft) 16 is rotatably accommodated in the left frame pipe portion 8, but nothing is accommodated in the right frame pipe portion 9, for example. It has become. The left end portion of the transmission shaft 16 is inserted into the upper end portion of the transmission case portion 5, and the right end portion of the transmission shaft 16 is inserted into the gear case portion 4.

  Further, in the gear case portion 4, a portion other than the front end portion of the input shaft 17 in the front-rear direction, a first gear 18 fixed to the rear end portion of the input shaft 17, a rotation shaft 19 in the front-rear direction, and this rotation A second gear 20 fixed to the rear end portion of the shaft 19 and meshed with the first gear 18, a first bevel gear 21 fixed to the front end portion of the rotating shaft 19, and a first bevel gear 21 fixed to the right end portion of the transmission shaft 16. The second bevel gear 22 meshed with the is housed. The input shaft 17 is located at the center in the left-right direction of the agricultural machine 1, and the front end portion of the input shaft 17 projects forward from the front surface portion of the gear case portion 4. The PTO shaft (not shown) of the tractor is connected via a power transmission means (not shown) configured to a universal joint, a transmission shaft, and the like.

  Further, in the transmission case portion 5, the first sprocket 23 fixed to the left end portion of the transmission shaft 16, the second sprocket 24 fixed to the left end portion of the tilling shaft 12, and both the sprockets 23, 24 are spanned. A chain 25 which is an endless transmission endless body is accommodated. That is, the transmission means 10 in the transmission case portion 5 is constituted by the first sprocket 23, the second sprocket 24, and the chain 25. Although not shown, the transmission means 10 may be constituted by a pulley, a belt, or the like.

  The input shaft 17, the first gear 18, the second gear 20, the rotating shaft 19, the first bevel gear 21, the second bevel gear 22, the transmission shaft 16, and the transmission means 10 are used to transmit power from the tractor side to the tilling shaft 12. Power transmission means 30 for transmitting up to is configured.

  The airframe 2 has a front projecting plate portion 31 projecting forward from the front end portion of the transmission case portion 5, and the longitudinal direction between the front projecting plate portion 31 and the front portion of the bracket portion 6 is long. A hitch pipe portion 32, which is a quadrangular tubular portion, is fixedly installed.

  Further, the machine body 2 has a curved plate-shaped tilling cover portion 33 that covers the upper portion of the tilling body 11, and this tilling cover portion 33 is fixedly installed between the transmission case portion 5 and the bracket portion 6. Yes.

  Further, at the rear end portion of the tillage cover 33, a leveling work behind the tillage body 11, that is, a leveling body (leveling plate) 36 for leveling the field scene horizontally is provided so as to be rotatable in the vertical direction. ing.

  The leveling body 36 is formed in a substantially plate shape with a longitudinal shape in the left-right direction. The front end portion (upper end portion) of the leveling body 36 is rotatably connected to the rear end portion of the tillage cover portion 33 of the machine body 2 via a connecting member 37 such as a hinge. The airframe 2 is provided with a leveling body biasing means 38 that biases the leveling body 36 downward.

  On the other hand, the agricultural work machine 1 has a center of gravity (total center of gravity) of the entire farm work machine 1 so that the transmission case part 5 side does not fall below the bracket part 6 side and the farm work machine 1 tilts with respect to the left-right direction during the tilling work. ) In the left-right direction central portion (meaning including the substantially central portion in the left-right direction) of the agricultural machine 1 is provided.

  The weight means 40 is configured by only a weight body (weight) 41 which is a single heavy object integrally formed in a substantially plate shape with a metal material such as a steel material having a large mass. The weight body 41 is fixedly attached to the outer surface side of the bracket portion 6 of the machine body 2 so as to overlap the bracket portion 6 by, for example, attachment means 42. The attachment means 42 is constituted by, for example, a bolt 43 and a nut 44. The mass of the weight body 41 is, for example, 50 to 60 kg.

  Here, as shown in FIGS. 4 and 5, the bracket portion 6 of the airframe 2 has a front support surface 46 that is a support surface on the front upper surface, and a rear support surface 47 that is a support surface on the rear upper surface. Have. That is, a triangular front cutout 48 is formed at the front upper portion of the bracket portion 6, and the front support surface 46 is constituted by the horizontal surface 46 a and the inclined surface 46 b facing the front cutout 48 in the bracket portion 6. . The inclined surface 46b has a steep forward and downward inclined shape that is gradually inclined forward. A triangular rear notch 49 is formed on the rear upper part of the bracket portion 6, and a rear support surface 47 is constituted by a horizontal surface 47 a and an inclined surface 47 b facing the rear notch 49 in the bracket portion 6. ing. The inclined surface 47b has a steep rearward and downward inclination that gradually inclines rearward.

  The bracket portion 6 has a plurality of (for example, six) frame pipe mounting holes 51 for mounting the right frame pipe portion 9 and a plurality of (for example, four) hitch pipe mounting for mounting the hitch pipe portion 32. A plurality of (for example, four) tillage shaft mounting holes 53 for mounting the tillage shaft 12, and a plurality (for example, two) weight mounting hole portions 54 for mounting the weight body 41. have. Each of these holes 51, 52, 53, 54 is formed through the bracket 6 in the thickness direction.

  As shown in FIGS. 4, 6, and 7, the weight body 41 includes a front convex portion 61 that is a convex portion that is placed on the front support surface 46 and supported from below by the front support surface 46. The rear upper portion has a rear convex portion 62 which is a convex portion placed on the rear support surface 47 and supported by the rear support surface 47 from below.

  That is, the weight body 41 includes a plate-like weight main body plate portion 65 having two substantially semicircular through-hole portions 63 and 64 formed thereon, and an inner surface (the bracket portion 6 and the weight main body plate portion 65). The front convex portion 61 that protrudes inward integrally at the front upper portion on the surface facing the opposite side) and the rear upper portion on the inner surface of the weight main body plate portion 65 that protrudes inward integrally. And a rear convex portion 62.

  The front convex portion 61 has a triangular plate shape corresponding to the front cutout portion 48 of the bracket portion 6 and is fitted into the front cutout portion 48. The rear convex portion 62 has a triangular plate shape corresponding to the rear cutout portion 49 of the bracket portion 6 and is fitted into the rear cutout portion 49. The projecting dimensions of the convex portions 61 and 62 from the inner surface of the weight main body plate portion 65 are larger than the plate thickness size of the bracket portion 6. Although the size of the weight main body plate portion 65 is smaller than that of the bracket portion 6, at least half of the outer surface of the bracket portion 6 is covered with the weight main body plate portion 65 (see FIG. 4). Further, as is apparent from FIG. 4, the curved upper end surface of the weight body 41 and the curved upper end surface of the bracket portion 6 coincide with each other in a side view. Furthermore, the frame pipe mounting hole 51 is located in the through hole 63, 64 in a side view.

  Further, the weight main body plate portion 65 has a curved plate-like connection portion 66 to which a lifting tool (not shown) for lifting the weight body 41 as a whole is connected when the weight body 41 is attached to the bracket portion 6. Have. The connecting portion 66 is located between the upper and lower through-hole portions 63 and 64 and protrudes outward from the outer surface of the weight main body plate portion 65. For this reason, the inner surface of the weight main body plate portion 65 other than the connection portion 66 is in contact with the outer surface of the bracket portion 6, but the connection portion 66 is not in contact with the outer surface of the bracket portion 6. A gap 69 exists between the outer surface of the bracket portion 6. In addition, the frame pipe mounting hole 51 is located behind the connection portion 66 in a side view.

  Further, the weight main body plate portion 65 has a plurality (two) of mounting hole portions 67 that coincide with the weight mounting hole portion 54 of the bracket portion 6.

  Then, when attaching the weight body 41 to the bracket portion 6, the operator connects the hook or wire of the lifting tool to the connection portion 66 and then lifts the weight body 41 using the lifting tool. Then, the weight body 41 is fixedly attached to the bracket portion 6 by using the attachment means 42.

  During this attachment, the front convex portion 61 of the weight body 41 is placed on the front support surface 46, supported from below by the horizontal surface 46a and the inclined surface 46b of the front support surface 46, and the rear convex portion of the weight body 41. Since the portion 62 is placed on the rear support surface 47 and supported from below by the horizontal surface 47a and the inclined surface 47b of the rear support surface 47, the weight body 41 is placed at a predetermined position with respect to the bracket portion 6. Positioned.

  That is, when the weight body 41 is placed on the bracket portion 6, the front and rear convex portions 61 and 62 are supported by the front and rear support surfaces 46 and 47, and as a result, the weight body 41 is attached to the bracket portion 6. It is positioned at a predetermined position in a state where it does not shift in the front-rear and up-down directions.

  Then, since the positioning hole 67 of the weight body 41 and the weight mounting hole 54 of the bracket portion 6 coincide with each other by this positioning, the operator can insert the bolts of the attachment means 42 into the holes 54 and 67 that coincide with each other. 43 is inserted, and the nut 44 is screwed onto the inserted bolt 43. Thus, the weight body 41 is fixedly attached to the bracket portion 6. Note that after the weight body 41 is attached, the connection between the lifting tool and the connection portion 66 is released. The attachment means 42 prevents the weight body 41 from coming off from the bracket portion 6, and the gravity of the weight body 41 does not act on the bolt 43 of the attachment means 42.

  Next, the operation of the agricultural machine 1 will be described.

  When the farm work machine 1 is moved forward in the traveling direction by the traveling of the tractor, the tilling body 11 performs the tilling work while rotating in a predetermined direction by the power from the transmission means 10 in the transmission case section 5. Then, behind the cultivated body 11, the leveling body 36 performs leveling work, and as a result, the field scene becomes flat.

  At the time of this tilling work, since the center of gravity of the farm work machine 1 is located at the center in the left-right direction of the farm work machine 1, the farm work machine 1 does not tilt with respect to the left and right direction, and the farm work machine 1 has an appropriate horizontal posture. State is maintained.

  And according to such a farming machine 1, since the gravity center of the whole farming machine 1 is located in the left-right direction center part of the farming machine 1 by the weight of the weight means 40, the farming machine 1 inclines at the time of work. Therefore, desired leveling can be obtained, and appropriate tillage work can be performed.

  Moreover, since the weight means 40 is comprised only of the one weight body 41 attached to the bracket part 6 of the body 2, the structure can be simplified.

  Further, the front convex portion 61 of the weight body 41 is supported by the front support surface (front shoulder portion) 46 and the rear convex portion 62 is supported by the rear support surface (rear shoulder portion) 47, thereby weighting. The body 41 is positioned at a predetermined position with respect to the bracket portion 6 of the airframe 2, and the mounting hole portion 67 and the weight mounting hole portion 54 coincide with each other by this positioning. Easy to install.

  Further, since the weight body 41 has a connection portion 66 to which a lifting tool for lifting the weight body 41 is connected, the weight body 41 which is a heavy object can be lifted by the lifting tool, and the weight body 41 can be lifted by the bracket portion 6. Can be attached more easily.

  Furthermore, since at least a part of the outer surface of the bracket portion 6 is covered with the weight body 41, the bracket portion 6 can be protected by the weight body 41, and the durability of the bracket portion 6 can be improved.

  Next, FIG. 8 to FIG. 12 show a second embodiment.

  The weight body 41 and the bracket portion 6 of the second embodiment are slightly different in shape from those of the first embodiment. The other configurations of the second embodiment are basically the same as those of the first embodiment.

  As shown in FIGS. 9 and 10, the bracket portion 6 of the airframe 2 has a front support surface (front shoulder portion) 71 that is a support surface having a front-downward inclination shape on the front upper surface, and has a rear-downward inclination support. A rear support surface (rear shoulder portion) 72 as a surface is provided on the rear upper surface. That is, the bracket portion 6 does not have the front side notch portion 48 and the rear side notch portion 49, and a part of the front upper surface of the front downward slope is the front support surface 71, and the rear side of the rear downward slope is formed. A part of the upper surface is a rear support surface 72.

  Further, as shown in FIGS. 8, 11, and 12, the weight body 41 is placed on the front support surface 71 and is supported by the front support surface 71 from below. 73 on the front upper portion, and has a rear convex portion 74 on the rear upper surface, which is a convex portion that is placed on the rear support surface 72 and supported from below by the rear support surface 72. .

  That is, the weight body 41 includes a plate-like weight main body plate portion 77 having one through-hole portion 75 formed thereon, and an inner surface of the weight main body plate portion 77 (the surface on the side facing the bracket portion 6). A front convex portion 73 integrally projecting inward at the front upper portion, and a rear convex portion 74 integrally projecting inward at the rear upper portion of the inner surface of the weight main body plate portion 77; The weight main body plate portion 77 is formed by a connecting convex portion 78 integrally projecting inwardly at the upper part of the inner surface of the weight main body plate portion 77 and integrally connecting the front convex portion 73 and the rear convex portion 74.

  The projecting dimensions of the convex parts 73, 74, 78 from the inner surface of the weight main body plate part 77 are larger than the plate thickness dimension of the bracket part 6. The size of the weight main body plate portion 77 is smaller than that of the bracket portion 6, and a part of the outer surface of the bracket portion 6 is covered with the weight main body plate portion 77 (see FIG. 9). Although the thickness dimension of the front convex part 73 and the thickness dimension of the rear convex part 74 are the same, the thickness dimension of the connecting convex part 78 is smaller than the thickness dimension of these convex parts 73 and 74, and the connecting convex part A gap 79 exists between the lower surface of the portion 78 and the upper surface of the bracket portion 6. It should be noted that the frame pipe mounting hole 51 is located in the through hole 75 in a side view.

  Further, the weight body plate portion 77 has a curved plate-like connection portion 80 to which a lifting tool (not shown) for lifting the weight body 41 as a whole is connected when the weight body 41 is attached to the bracket portion 6. Have. The connection portion 80 is formed at the upper end portion of the weight main body plate portion 77 and is located above the through hole portion 75.

  Furthermore, the weight main body plate portion 77 has a plurality (two) of mounting hole portions 81 that coincide with the weight mounting hole portion 54 of the bracket portion 6. Each mounting hole 81 includes a large-diameter hole 81a that is located on the outer surface side and accommodates the nut 44, and a small-diameter hole 81b that is formed in a smaller diameter than the large-diameter hole 81a and is located on the inner surface side. Has been.

  Then, when attaching the weight body 41 to the bracket portion 6, the operator connects the hook or wire of the lifting tool to the connection portion 80 and then lifts the weight body 41 using the lifting tool. Then, the weight body 41 is fixedly attached to the bracket portion 6 by using the attachment means 42.

  At the time of this attachment, also in the second embodiment, the front convex portion 73 of the weight body 41 is placed on the front support surface 71 and supported from below by the front support surface 71 and the rear of the weight body 41. The side protrusion 74 is placed on the rear support surface 72 and supported from below by the rear support surface 72, whereby the weight body 41 is positioned at a predetermined position with respect to the bracket portion 6.

  That is, by placing the weight body 41 on the bracket portion 6, the front and rear convex portions 73 and 74 are supported by the front and rear support surfaces 71 and 72, and as a result, the weight body 41 is attached to the bracket portion 6. It is positioned at a predetermined position in a state where it does not shift in the front-rear and up-down directions. Then, since the mounting hole 81 of the weight body 41 and the weight mounting hole 54 of the bracket portion 6 coincide with each other by this positioning, the operator can insert the bolts of the attachment means 42 into the holes 54 and 81 that coincide with each other. 43 is inserted, and the nut 44 is screwed onto the inserted bolt 43. Thus, the weight body 41 is fixedly attached to the bracket portion 6. Note that after the weight body 41 is attached, the connection between the lifting tool and the connection portion 80 is released. The attachment means 42 prevents the weight body 41 from coming off from the bracket portion 6, and the gravity of the weight body 41 does not act on the bolt 43 of the attachment means 42.

  Even in the second embodiment, since the center of gravity of the agricultural machine 1 is located at the center in the left-right direction of the agricultural machine 1 due to the weight of the weight means 40, the agricultural machine 1 is inclined during the operation. Therefore, it is possible to achieve the same effects as those of the first embodiment, for example, desired leveling can be obtained and appropriate tilling work can be performed.

  FIGS. 13 and 14 show a third embodiment.

  The weight means 40 of the third embodiment is configured by a plurality of, for example, three weight bodies (divided weights) 91 fixedly attached to the outer surface of the bracket portion 6 by the attaching means 42. Each weight body 91 has a substantially rectangular parallelepiped shape, and has a size that can be lifted by an operator alone, for example. Each weight body 91 is provided with a mounting hole 92, and a bolt 43 of the mounting means 42 is inserted into the mounting hole 92, and a nut 44 is screwed to the bolt 43. The number of weights 91 is arbitrary, and may be one or four or more. Further, the weight body 91 may be attached to the inner surface of the bracket portion 6, and the attachment method is not limited to the bolt 43 and the nut 44, and may be attached by welding or the like.

  Further, FIG. 15 shows a fourth embodiment.

  The weight means 40 of the fourth embodiment is constituted by a plurality of, for example, two ring-shaped weights (divided weights) 94 attached to the upper outer surface of the bracket portion 6 by an attachment member 93. The shaft portion 95 of the attachment member 93 is inserted into the weight body 94, and the weight body 94 is prevented from being pulled out by the flange portion 96 of the attachment member 93. Note that the number of the weights 94 and the attachment method are arbitrary.

  FIG. 16 shows a fifth embodiment.

  The weight means 40 of the fifth embodiment includes a columnar first weight member (divided weight) 98 fitted inside the right end side of the right frame pipe portion 9 and a right end side of the hitch pipe portion 32. It is composed of a prismatic second weight member (divided weight) 99 fitted inside. For example, the weight means 40 may be configured by only one of the first weight member 98 and the second weight member 99.

  Further, FIG. 17 shows a sixth embodiment.

  In the sixth embodiment, the bracket portion 6 of the airframe 2 also serves as the weight means 40. That is, the bracket portion 6 is formed thicker than a normal bracket portion (for example, a plate thickness dimension of 6 mm) shown in FIG. 3 and the like, and the plate thickness dimension is, for example, approximately 20 mm. In addition, you may make it comprise with the material whose mass is larger than the material which comprises a normal bracket part, for example.

  Furthermore, FIG. 18 shows a seventh embodiment.

  In the seventh embodiment, instead of the right frame pipe portion 9, a bracket portion 6 and the gear case portion 4 are connected by a solid right frame round bar portion 100 also serving as a weight means 40. . For example, instead of the entire right frame pipe portion 9, only a part of the right frame pipe portion 9 may be constituted by a solid right frame round bar portion that also serves as the weight means 40.

  FIG. 19 shows an eighth embodiment.

  The weight means 40 of the eighth embodiment includes a container base 101 which is a first weight member attached to the right frame pipe portion 9 and a container which is a second weight member placed on the container base 101. It is composed of 102. For example, stones are placed in the container 102.

  For example, the above embodiments may be appropriately combined. The agricultural machine 1 can also be applied to a folding agricultural machine such as a three-part fold.

DESCRIPTION OF SYMBOLS 1 Farm work machine 2 Airframe 5 Transmission case part 6 Bracket part
10 Transmission means
11 Tillage
36 Leveling body
40 Weight means
41, 91, 94 weight
46, 71 Front support surface that is support surface
47, 72 Rear support surface as support surface
61, 73 Front convex part that is convex part
62, 74 Rear convex part that is convex part
66, 80 connections

Claims (5)

An airframe having a transmission case portion at one end in the left-right direction, and a bracket portion at the other end in the left-right direction;
A cultivating body that is laid between the transmission case portion and the bracket portion, and performs a cultivating work while rotating with power from the transmission means in the transmission case portion,
A leveling body that performs leveling work behind this tilled body,
An agricultural machine comprising: weight means for positioning the center of gravity of the entire agricultural machine in the center of the horizontal direction of the agricultural machine. The agricultural machine according to claim 1, wherein the weight means includes a weight body attached to the bracket portion. The bracket portion has a support surface,
The agricultural machine according to claim 2, wherein the weight body has a convex portion supported by the support surface. The bracket portion has a front support surface and a rear support surface,
The weight body has a front convex portion supported by the front support surface and a rear convex portion supported by the rear support surface,
The weight body is positioned at a predetermined position with respect to the bracket portion by the front convex portion being supported by the front support surface and the rear convex portion being supported by the rear support surface. The agricultural machine according to claim 2. The agricultural machine according to any one of claims 2 to 4, wherein the weight body has a connection portion to which a lifting tool for lifting the weight body is connected.

Images