JP4344289B2 - Agricultural machine - Google Patents

Description

  The present invention relates to an agricultural machine capable of improving assembly workability.

2. Description of the Related Art Conventionally, there has been known an agricultural working machine including, for example, a machine body connected to a tractor, a farming body that is rotatably provided on the machine body and performs a tilling work while rotating, and a leveling body that performs a leveling work behind the farming body. (For example, refer to Patent Document 1).
Japanese Utility Model Publication No. 1-59004

  However, in the conventional agricultural machine, for example, it takes time to align the leveling body at the time of assembling, so that the assembling work may be complicated.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can aim at the improvement of assembly workability | operativity.

請 Motomeko 1 agricultural machine according includes a body, rotatably provided in this body, a tilling member for the tilling while rotating, is provided through the elastic plate on the machine body, behind the tilling bodies A leveling body that performs leveling work, a hook receiving body provided in the machine body, a hook provided on the leveling body and hooked on the hook receiving body, and the elastic plate is prevented from stretching by being hooked on the hook receiving body. A hook body, and the hook receiver has a concave portion that protrudes upward from the elastic plate through a hole formed in the elastic plate and opens upward. It has a left and right axial part that is hooked inside the concave part and is rotatably supported inside the concave part .

According to the present invention, since the leveling body can be easily aligned by hooking the hooking body on the hook receiving body during assembly, the positioning of the leveling body does not take time and the assembling workability can be improved. In addition, the elastic plate can be appropriately prevented from being stretched by the hooking body hooking on the hook receiving body. Further, the leveling body can be more easily aligned by hooking the shaft-like portion of the hooking body to the concave portion of the hooking receiver during assembly.

  An embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.

  1 and 2, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to a tractor (not shown), which is a traveling vehicle, for example. This is a folding scraper that performs work) and earthing work.

  The farm work machine 1 is provided with a central work part 2 that is slightly elongated in the left-right direction, and is provided at the left and right ends of the central work part 2 so as to be pivotable up and down around the shaft 3. It has a pair of left and right extension work sections 4 to be set.

  The central working unit 2 includes a vehicle body 6 connected to a tractor. The vehicle body 6 has a three-point connection portion 7, and the three-point connection portion 7 is connected to a three-point link portion (not shown) at the rear of the tractor. Connected. The machine body 6 has an input shaft holding portion 8 such as a gear box, and the input shaft 9 is rotatably provided on the input shaft holding portion 8. The input shaft 9 is connected to the PTO shaft of the tractor via a transmission shaft or the like.

  The machine body 6 is rotatably provided with a rotary tiller 11 that receives power from the input shaft 9 and rotates in a predetermined direction while performing tilling work. The cultivating body 11 is composed of a rotating shaft in the left-right direction and a cultivating claw provided on the rotating shaft. Further, the upper portion of the tillage body 11 is covered with the tillage cover portion 12 of the airframe 6, and attachment plate portions are provided at both left and right ends of the tillage cover portion 12 that is slightly elongated in the left-right direction and has a substantially plate shape. 13 is installed.

  Further, at the rear end portion of the tilling cover portion 12 of the machine body 6, the leveling body 16 that performs leveling work while moving up and down so as to follow the field scene behind the tilling body 11 at the time of scraping work is substantially elongated in the left-right direction. A rectangular elastic plate (rubber cover) 17 is provided. The leveling body 16 is a substantially plate-shaped first leveling body (level plate) 18 and a substantially plate-like shape that is provided on the first leveling body 18 so as to be pivotable in the vertical direction about a horizontal axis 20. And a second leveling body (rake plate) 19. That is, the front end portion of the elastic plate 17 is attached to the rear end portion of the tilling cover portion 12 with a fixture (bolt and nut) 21, and the front end of the first leveling body 18 is attached to the rear end portion of the elastic plate 17. The part is attached by a fixture (bolt and nut) 22, and the front end of the second leveling body 19 can be rotated via a horizontal axis 20 at the rear end of the first leveling body 18. It is attached.

  The central working unit 2 includes earthing setting means 23 for fixing the leveling body 16 to the tilling cover 12 of the machine body 6 and setting the leveling body 16 in the earthing work state during the earthing work. . The earthing setting means 23 is provided between the tillage cover portion 12 of the machine body 6 and the second leveling body 19, and includes a first rotating arm 24 and a second rotating arm 25, and the second rotating arm 25. Is attached to a substantially central portion in the left-right direction of the second leveling body 19.

  In addition, fitting convex parts 26 and 27 which are one fitting part are provided in the left and right both ends of the first leveling body 18 and the left and right both ends of the second leveling body 19.

  The central working unit 2 also includes a pair of left and right hook receiving bodies (flat plate stoppers) 31 that are substantially plate-like provided at both left and right ends of the machine body 6.

  Each catch receiving body 31 is fixedly attached to the mounting plate portion 13 of the body 6, and a concave portion 32 having a hook shape opened upward is formed on the upper portion of each catch receiving body 31. The concave portion 32 of each catch receiving body 31 protrudes upward from the elastic plate 17 through a hole 33 formed in the elastic plate 17.

  Further, the central working unit 2 is provided at both left and right ends of the leveling body 16 and is hooked by the catch receiving body 31 and is restrained from moving to the rear side of the leveling body 16 by being hooked on the hook receiving body 31. Are provided with a pair of left and right hooks (U-shaped metal fittings and pins) 36 for preventing the widthwise extension of the two.

  Each hook 36 is fixedly attached to the upper surface of the front end portion of the first leveling body 18, and a left and right axial portion 37 is formed on the upper portion of each hook 36. That is, each hook body 36 has a U-shaped portion 38 fixed to the first leveling body 18, and a left and right axial portion 37 is fixed to the upper end portion of the U-shaped portion 38. . As shown in FIGS. 3 and 4, at least during the earthing work, the shaft-like portion 37 of each hooking body 36 is fitted and hooked inside the concave portion 32 of each corresponding hook receiving body 31. The concave portion 32 is supported from the lower side so as to be rotatable.

  On the other hand, the pair of left and right extension work portions 4 are symmetrical, and each extension work portion 4 includes an extension machine body 46 that is a machine body that rotates up and down about a substantially longitudinal axis 3.

  This extension machine body 46 is a rotary for performing a tilling work together with the tilling body 11 while receiving a power from the tilling body 11 side of the central working part 2 and rotating in a predetermined direction when the extension working part 4 is set in the unfolding working state. An extended tillage body 51 that is a type of tillage body is rotatably provided. As with the tillage body 11, the extended tillage body 51 is composed of a rotating shaft in the left-right direction and a tilling claw provided on the rotating shaft. Further, the upper portion of the extended tillage body 51 is covered with a tillage cover portion 52 of the extension machine body 46, and this tillage cover portion 52 is formed in a substantially plate shape with a slight longitudinal shape in the left-right direction.

  In addition, at the rear end of the tilling cover portion 52 of the extension machine 46, an extended leveling body 56, which is a leveling body that performs leveling work while moving up and down so as to follow the field scene behind the extension tillage body 51 at the time of scraping work. Is provided via an extended elastic plate 57 which is an elastic plate (rubber cover) that is substantially rectangular in the left-right direction. The extended leveling body 56 is provided in a substantially plate-shaped first extended leveling body (flat plate) 58 and the first extended leveling body 58 so as to be pivotable in the vertical direction about a horizontal axis 60. A second extended leveling body (rake plate) 59 having a substantially plate shape. That is, the front end portion of the extension elastic plate 57 is attached to the rear end portion of the tilling cover portion 52 with a fixture (bolt and nut) 61, and the first extension leveling body is attached to the rear end portion of the extension elastic plate 57. The front end of 58 is attached by a fixture (bolt and nut) 62, and the front end of the second extension leveling body 59 is connected to the rear end of the first extension leveling body 58 via a shaft 60 in the left-right direction. And is pivotally attached.

  The extension work unit 4 includes a earthing setting means 63 for fixing the extended leveling body 56 to the tilling cover part 52 of the extension machine 46 and setting the extended leveling body 56 in the earthing work state during the earthing work. I have. The earthing setting means 63 is provided between the tillage cover portion 52 of the extension machine body 46 and the second extension leveling body 59, and has a first rotating arm 64 and a second rotating arm 65. The lower end of the arm 65 is attached to the second extended leveling body 59.

  It should be noted that the left and right ends of the first extended leveling body 58 and the left and right end parts of the second extended leveling body 59 are fitted with fitting projections 26 and 27 when the extension work portion 4 is set in the unfolding work state. Fitting recesses 66 and 67 that are the other fitting portions to be fitted are provided. Then, the ground leveling body 16 of the central working part 2 and the extended leveling body 56 of the extension work part 4 are integrated with each other by mating the fitting convex parts 26 and 27 and the fitting concave parts 66 and 67. Work.

  The extension working unit 4 includes a pair of left and right hook receiving bodies (flat plate stoppers) 71 that are provided at both left and right ends of the extension machine body 46 and also serve as side plates of the extension machine body 46. Each catch receiving body 71 is fixedly attached to the left and right end portions of the tillage cover portion 52 of the extension machine body 46, and a concave portion 72 opened upward is formed on the upper portion of each catch receiving body 71. .

  Further, the extension work unit 4 is provided at both left and right ends of the extension leveling body 56 and is hooked by the catch receiving body 71. The extension working part 4 is extended by restricting the rearward movement of the extension leveling body 56 by the hooking on the hook receiving body 71. A pair of left and right hooks (U-shaped metal fittings and pins) 76 for preventing the elastic plate 57 from extending in the width direction are provided.

  Each hook 76 is fixedly attached to the upper surface of the front end portion of the first extended leveling body 58, and a left and right axial portion 77 is formed on the upper portion of each hook 76. That is, one hook 76 of the pair of hooks 76 has a U-shaped portion 78 fixed to the first extended leveling body 56, and a left-right axial shape is formed on the upper end of the U-shaped portion 78. The portion 77 is fixed, and the other hooking body 76 has a plate portion 78a fixed to the first extended leveling body 58, and a left and right axial portion 77 is fixed to the upper end portion of the plate portion 78a. As shown in FIGS. 5 and 6, at least during the earthing work, the shaft-like portion 77 of each hooking body 76 is fitted and hooked inside the concave portion 72 of the corresponding hooking receiving body 71. It is supported from below on the inside of the concave portion 72 so as to be rotatable.

  Next, the operation and the like of the one embodiment will be described.

  When the leveling body 16 is attached to the body 6 when the agricultural machine 1 is assembled, the front end portion (upper end portion) of the elastic plate 17 is attached to the rear end portion of the tillage cover portion 12 with the fixture 21 and then the leveling is completed. The ground leveling body 16 is suspended from the hook receiving body 31 via the hooking body 36 by hooking the shaft-like portion 37 of the hooking body 36 provided on the body 16 to the concave portion 32 of the hook receiving body 31 provided on the body 6. Then, the leveling body 16 is aligned, and then the rear end portion (lower end portion) of the elastic plate 17 is attached to the upper end portion which is the front end portion of the first leveling body 18 with the fixture 22.

  Similarly, when the extension leveling body 56 is attached to the extension body 46, the front end portion (upper end portion) of the extension elastic plate 57 is attached to the rear end portion of the tillage cover portion 52 with the fixture 61, and then the extension leveling operation is performed. By hooking the shaft-shaped portion 77 of the hook body 76 provided on the body 56 to the concave portion 72 of the hook receiver 71 provided on the extension machine body 46, the extended leveling body 56 is connected to the hook receiver 71 via the hook body 76. The extended leveling body 56 is suspended and aligned, and then the rear end portion (lower end portion) of the extension elastic plate 57 is attached to the upper end portion, which is the front end portion of the first extension leveling body 58, with the fixture 62.

  On the other hand, when carrying out earthing work with the maximum working width using the assembled agricultural work machine 1, the left and right extension work parts 4 are set in the unfolding work state, and the leveling body 16 and the extension leveling body 56 are earthed. In the state set to the state (locked state) and set so that the cultivated body 11 and the extended cultivated body 56 do not rotate, the agricultural work machine 1 is moved by the forward traveling of the tractor. Then, the soil leveling operation is performed by the second leveling body 19 of the leveling body 16 and the second extension leveling body 59 of the extended leveling body 56, and the field becomes substantially flat.

  During this earthing work, the leveling body 16 and the extended leveling body 56 are fixed to the airframe 6 and the extended body 46 in a desired earthing work state by the hooking of the hooking bodies 36 and 76 with respect to the hook receiving bodies 31 and 71. Therefore, even if the leveling body 16 and the extended leveling body 56 are subjected to earth pressure from the field, the elastic plate 17 and the extended elastic plate 57 do not have a tensile force in the width direction, and the elastic plate 17 and the extended elastic plate 57 does not extend in the width direction.

  The working width can be adjusted according to the working situation by setting only one of the left and right extension working parts 4 to the unfolding working state or setting both the left and right extending working parts 4 to the unfolding working state. .

  In addition, when performing scraping work with the maximum working width after the earthing work is completed, the left and right extension working parts 4 are set to the unfolded working state, and the leveling body 16 and the extended leveling body 56 are set to the normal scraping work state (free state). In the state where the tiller body 11 and the extended tiller body 51 are set to rotate in the desired direction, the agricultural work machine 1 is moved by the forward traveling of the tractor. Then, the tilling work is performed by the tilling body 11 and the extended tilling body 51, and the leveling work is performed by the leveling body 16 and the extended leveling body 56.

  During this scraping operation, the elastic plate 17 and the extended elastic plate 57 are elastically deformed, or the first leveling body 18 and the first extended leveling body 58 are connected to the shaft-shaped portion 37, in accordance with the state of the field scene. The second leveling body 19 and the second extension leveling body 59 rotate up and down around the shafts 20 and 60.

  In the case of scraping work, only one of the left and right extension work sections 4 is set in the unfolded work state, or both the left and right extension work sections 4 are set in the unfolded work state, depending on the work situation. Work width can be adjusted.

  And according to the agricultural machine 1 of the one embodiment, the leveling body can be easily obtained by hooking the shaft-like portions 37 and 77 of the catching bodies 36 and 76 on the recessed portions 32 and 72 of the catching bodies 31 and 71 during assembly. 16 and the extended leveling body 56 can be aligned, so that the alignment of the leveling body 16 and the extended leveling body 56 is not troublesome, and the assembly workability of the farm work machine 1 can be improved.

  Moreover, since the shaft-like portions 37 and 77 of the catching bodies 36 and 76 are hooked on the concave portions 32 and 72 of the catch receiving bodies 31 and 71 during the earthing work, the leveling body 16 and the extended leveling body 56 are removed from the field. Even if pressure is applied, the elastic plate 17 and the extended elastic plate 57 are not subjected to a tensile force in the width direction, and the elastic plate 17 and the extended elastic plate 57 can be prevented from extending. Therefore, for example, the leveling body 16 and the extension leveling body 56 are displaced based on the extension of the elastic plate 17 and the extension elastic plate 57, and the fitting convex portions 26 and 27 and the fitting concave portions 66 and 67 are not reliably fitted. Thus, the certainty of fitting between the fitting convex portions 26 and 27 of the leveling body 16 and the fitting concave portions 66 and 67 of the extended leveling body 56 can be improved.

Incidentally, one in the embodiment described above has been described elastic plate 17 and the extended elastic plate 57 provided with a foldable agricultural machine (puddling machine) 1 for, but FIG no show For example, with the elastic plate 17 It may be a mold scraper, or may be a two-part scraper provided with an elastic plate 17 and an extended elastic plate 57 .

It is a side view of one embodiment of the agricultural machine of the present invention. It is a rear view of a farm work machine same as the above. It is a top view of the central working part of an agricultural working machine same as the above. It is a side view of the center working part of an agricultural working machine same as the above. It is a top view of the extension work part of a farm working machine same as the above. It is a side view of the extension operation part of an agricultural working machine same as the above .

Explanation of symbols

1 agricultural machine
6 aircraft
11 Tillage
16 leveling body
17 elastic plate
31 catcher
32 concave parts
33 holes
36 hook
37 shaft

Claims (1)

The aircraft,
A plowing body that is rotatably provided in this machine body and performs a plowing work while rotating,
A leveling body provided on the body via an elastic plate and performing leveling work behind the tillage body;
A hook receiving body provided on the airframe;
A hook body that is provided on the leveling body, is hooked on the hook receiving body, and prevents the elastic plate from being stretched by being hooked on the hook receiving body ;
The hook receiving body has a concave portion that protrudes upward from the elastic plate through a hole formed in the elastic plate and opens upward.
The agricultural machine according to claim 1, wherein the hooking body has a left and right shaft-like portion that is hooked inside the concave portion and rotatably supported inside the concave portion .

Images