JP2019154292A - Implement - Google Patents

Abstract

To provide an implement capable of improving finish of a puddling work.SOLUTION: The implement comprises: a cultivation rotor; a center work body which is arranged on a rear side to a travel direction of the cultivation rotor, and which comprises a first center ground leveling body and a second center ground leveling body arranged on a rear end of the first center ground leveling body; a side work body which is rotatably coupled to the center work body, and comprises a first side ground leveling body and a second side ground leveling body provided on a rear end of the first side ground leveling body; and a first auxiliary ground leveling part arranged between the second center ground leveling body and the second side ground leveling body, and protrudes from any one of the second center ground leveling body and the second side ground leveling body to the other thereof, the first auxiliary ground leveling part comprises a first surface facing a gap between the second center ground leveling body and the second side ground leveling body, and a second surface adjacent to the first surface and having an area smaller than that of the first surface.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a work machine. In particular, the present invention relates to a working machine that is attached to the rear part of a traveling machine body and performs a scraping work by rotation of a tilling rotor.

  In farm work, for planting rice, the work of putting water into the field and crushing the soil and crushing it is called a rake work, and the work machine for that purpose is called a rake machine or the like. The scraper generally has a tilling rotor for rotating and leveling a plurality of claws attached to a rotating shaft, and a first rotor that is provided behind the tilling rotor and smoothes the crushed soil. A leveling body (also referred to as an apron) and a second leveling body that is provided at the rear of the first leveling body and is leveled with respect to the ground that is supported by the first leveling body so as to be rotatable in the vertical direction. (Also referred to as a leveler) (Patent Document 1).

JP 2006-34225 A

  The scraper described in Patent Document 1 includes a central work body and two extension work bodies, and each extension work body can be folded with respect to the central work body. That is, each extension work body is unfolded and used in the left-right direction during the extension work, and is folded and stored during the non-extension work.

  Because it has such a configuration, during extension work, that is, when performing scraping work using all of the central work body and two extension work bodies, between the central work body and each extension work body, A certain amount of gap occurs. In the gap formed between the central work body and the extended work body, sufficient leveling with the leveler cannot be performed, so the finish becomes worse, for example, a streak of traces due to the soil being left on the field surface. There is a fear.

  The objective of this invention is providing the working machine provided with the structure for improving the finishing of a scraping operation | work.

  A working machine according to an embodiment of the present invention includes a tilling rotor, a first central leveling body, and a first central leveling body provided at a rear end portion of the first central leveling body. A central working body including two central leveling bodies, and a second side which is rotatably connected to the central working body and provided at a rear end portion of the first side leveling body and the first side leveling body A lateral working body including a leveling body, and disposed between the second central leveling body and the second side leveling body, and from any one of the second central leveling body and the second side leveling body A first auxiliary leveling portion that protrudes toward the other side, the first auxiliary leveling portion facing the gap between the second central leveling body and the second side leveling body. And a second surface that is adjacent to the first surface and has a smaller area than the first surface.

  The first auxiliary leveling portion may be a plate-like member having the second surface as a side surface.

  Each of the second central leveling body and the second side leveling body may include a main body portion and a plate portion. In that case, it is preferable that the first auxiliary leveling portion is disposed between the plate portion of the second central leveling body and the plate portion of the second side leveling body. Moreover, it is preferable that the first auxiliary leveling portion is disposed so as to cover a gap between the main body portion of the second central leveling body and the main body portion of the second side leveling body in a rear view.

  The surface of the first auxiliary leveling portion facing the farm field on the second surface may be inclined such that the rear end is located above the front end.

  The working machine further includes an extended leveling body rotatably connected to the second side leveling body, and is disposed between the second side leveling body and the extended leveling body. You may have the 2nd auxiliary leveling part provided by protruding toward either side from either one of 2 side leveling bodies and the said extension leveling body.

  The second side leveling body may be composed of a main body portion and a plate portion. In that case, it is preferable that the second auxiliary leveling portion is disposed between the plate portion of the second side leveling body and the extended leveling body.

  It is preferable that the protrusion width of the second auxiliary leveling portion is larger than the maximum width of the gap between the main body portion of the second side leveling body and the extended leveling body.

  The work implement may include a third auxiliary leveling unit that is disposed between the second side leveling body and the extended leveling body and that faces the second auxiliary leveling unit. At this time, the third auxiliary leveling portion has a first surface facing the second auxiliary leveling portion, and a second surface adjacent to the first surface and having a smaller area than the first surface, The first surface may be inclined such that the upper end is closer to the second auxiliary leveling portion than the lower end.

  The third auxiliary leveling portion may be a plate-like member having the second surface as a side surface.

  According to the working machine of the present invention, it is possible to improve the finish of the scraping work with a simple structure.

It is a perspective view which shows the structure of the working machine in 1st Embodiment. It is a perspective view which shows a structure when the working machine in 1st Embodiment folds the left side working body. It is a figure which shows the structure of the connection part vicinity of the 2nd center leveling body and 2nd left side leveling body of the working machine in 1st Embodiment. It is a figure which shows the structure of the 1st auxiliary leveling part in 1st Embodiment. It is a figure which shows the structure of the connection part vicinity of the 2nd left side leveling body and left side extended leveling body of the working machine in 1st Embodiment. It is the enlarged view to which the connection part vicinity of the 2nd left side leveling body and left side extension leveling body of the working machine in 1st Embodiment was expanded.

  Hereinafter, an embodiment of a working machine of the present invention will be described with reference to the drawings. However, the working machine of the present invention can be implemented in many different modes and should not be construed as being limited to the description of the examples shown below.

  Note that in the drawings referred to in this embodiment, the same portions or portions having similar functions are denoted by the same reference symbols or similar symbols, and repeated description thereof may be omitted. For example, when the work machine of the present invention is composed of three work bodies, that is, a central work body, a left work body, and a right work body, “C” is shown after the number to indicate that each work body has a part. ”,“ L ”, and“ R ”.

  In the specification and claims of the present application, “upper” indicates a direction away from the field vertically, and “lower” indicates a direction approaching vertically toward the field. Further, “front” indicates a direction in which the traveling machine body is positioned with respect to the work machine, and “rear” indicates a direction 180 ° opposite to the front. “Left” indicates the left when the traveling machine body is located in the direction where the work machine is located, and “Right” indicates the direction opposite to the left by 180 °.

<First Embodiment>
[Configuration of Work Machine 10]
Hereinafter, the configuration of the work machine 10 according to the first embodiment will be described in detail with reference to FIGS. 1 and 2. FIG. 1 is a perspective view illustrating a configuration of a work machine according to the first embodiment. FIG. 2 is a perspective view showing a configuration when the working machine in the first embodiment folds the left working body. Note that FIG. 2 is a diagram in which the position of the left working body 10L is changed with respect to FIG. 1, and therefore, for convenience of explanation, some of the above-described reference numerals are omitted in FIG.

  As shown in FIG. 1, the work machine 10 according to the present embodiment includes a central work body 10C, a left work body 10L, and a right work body 10R, and has a structure divided into three. The central work body 10C is disposed at the center of the work machine 10 and functions as a work machine body. The left working body 10L and the right working body 10R are attached to the left and right ends of the central working body 10C so as to be rotatable in the vertical direction. The work machine 10 can be folded over the central work body 10C by turning the left work body 10L and the right work body 10R obliquely upward, and can be folded obliquely downward as shown in FIG. Can be deployed.

  Here, a state in which the left work body 10L and the right work body 10R are overlapped with the central work body 10C and folded is referred to as a storage state. The stowed state is a state where the width of the work machine 10 in the direction orthogonal to the traveling direction of the traveling machine body is reduced. Further, a state where the left working body 10L, the right working body 10R, and the central working body 10C are arranged side by side is referred to as an unfolded state. The unfolded state is a state in which the work machine 10 is extended in a direction perpendicular to the traveling direction of the traveling machine body.

  Next, the central work body 10C will be described. The central working body 10C supports the top mast 12 and the lower link connecting portion 14 that function as a connecting portion with a traveling machine body such as a tractor, the input shaft 16 that transmits power from the traveling machine body, and the central working body 10C that extends in the left-right direction. Support frame 18, transmission frame (chain case) 20C, gear box 22, central shield cover 24C, tilling rotor (not shown), first central leveling body 28C, second central leveling body 30C, apron control mechanisms 31a and 31b And a central leveler control mechanism 32C.

  The top mast 12 is provided at the front center portion of the central working body 10C, and the lower link connecting portions 14 are provided at two positions on the left and right of the central working body 10C. The top mast 12 and the lower link connecting portions 14 provided at the two left and right locations are respectively connected to the top link of the traveling machine body (not shown) and the lower links (three-point link hitch mechanisms) provided at the two left and right locations. Is attached to the rear part of the traveling machine body so as to be movable up and down. The work machine 10 and the traveling machine body may be connected via an auto hitch frame attached to the three-point link hitch mechanism of the traveling machine body.

  The input shaft 16 is provided in the gear box 22 provided in the front center portion of the central work body 10 </ b> C, and inputs the power transmitted from the traveling machine body to the work machine 10. The input shaft 16 is connected to the PTO shaft of the traveling machine body, and power is transmitted from the PTO shaft through a universal joint or the like.

  The support frame 18 also serves as a main body frame of the central work body 10 </ b> C, and is extended on the left and right sides of the gear box 22 in the left-right direction with respect to the traveling direction of the traveling machine body. Here, a transmission shaft (not shown) is internally provided in the support frame 18 disposed between the gear box 22 and the transmission frame 20C. By this transmission shaft, the power for rotating the tilling rotor is transmitted from the gear box 22 to the transmission frame 20C.

  The central shield cover 24C is provided along the support frame 18 and is disposed so as to cover the top of the tilling rotor. The soil crushed by the tilling rotor hits the inner wall of the central shield cover 24C and is further crushed, and falls back to the field again. Thus, the central shield cover 24 </ b> C has both the function of preventing scattering of the soil wound up by the tilling rotor and the function of crushed soil.

  The tilling rotor of the central working body 10C has a configuration in which a plurality of tilling claws are attached to a rotating shaft (not shown) rotatably supported below the central shield cover 24C using a flange or a holder. Have. The power input from the input shaft 16 is shifted in the gear box 22, transmitted via the transmission shaft in the support frame 18, the transmission frame 20 </ b> C, and the like, and converted into rotary motion of the tilling rotor.

  The first central leveling body 28C is rotatably attached to the central shield cover 24C, and is usually called an apron. The second central leveling body 30C is attached to the first central leveling body 28C so as to be rotatable in the vertical direction, and is generally called a leveler. The first central leveling body 28C has a role as a cover for returning mud and soil scattered by rotation of the tillage rotor of the central working body 10C and a leveling member that performs leveling work by pressing the second central leveling body 30C against the field. As a role. The second central leveling body 30C plays a role as a leveling member for leveling the field surface by directly contacting the field.

  The apron control mechanisms 31a and 31b are installed between the central shield cover 24C and the first central leveling body 28C, and function as means for controlling the vertical rotation of the first central leveling body 28C. The apron control mechanisms 31a and 31b have a pressure mode that prevents the first central leveling body 28C from rotating upward and a non-pressurization mode that does not prevent the first central leveling body 28C from rotating upward. In the pressurizing mode, an urging force that prevents the first central leveling body 28C from rotating upward is applied. This urging force is realized by the reaction force of the springs arranged on the link rods constituting the apron control mechanisms 31a and 31b. By setting the apron control mechanisms 31a and 31b to the pressurizing mode, it is possible to improve the soil breaking performance and leveling performance by the first central leveling body 28C, and it is possible to finish the field more efficiently.

  The central leveler control mechanism 32C is installed between the central shield cover 24C and the second central leveling body 30C, and functions as means for controlling the vertical rotation of the second central leveling body 30C. The central leveler control mechanism 32C has a soiling mode for fixing the second central leveling body 30C in a downward direction (earthing state) and a leveling mode that does not prevent the second central leveling body 30C from rotating in the vertical direction. Switching is possible. The mode switching is realized by restricting or releasing the operation of the link rod constituting the central leveler control mechanism 32C.

  Next, the left working body 10L will be described. The left working body 10L includes a left shield cover 24L, a tilling rotor 26L (see FIG. 2) disposed below the left shield cover 24L, a transmission frame (chain case) 20L, a first left leveling body 28L, and a second left leveling body. 30L, a left leveler control mechanism 32L, and a left extension leveling body rotating mechanism 34L. The roles of the left shield cover 24L, the transmission frame 20L, the first left leveling body 28L, the second left leveling body 30L, and the left leveler control mechanism 32L are the same as the corresponding elements in the above-described central work body 10C. Therefore, the description here is omitted.

  Here, as shown in FIG. 2, the tilling rotor 26L includes a rotating shaft (also referred to as a claw shaft) 26La and a plurality of tilling claws 26Lb disposed around the rotating shaft 26La via a holder. When the rotating shaft 26La is rotated by the power transmitted through the transmission frame 20L, the tilling claws 26Lb disposed around the rotating shaft 26L rotate at the same time, thereby crushing and stirring the soil in the field.

  Although not shown, the central working body 10C is provided with a tilling rotor 26C, and the right working body 10R is provided with a tilling rotor 26R. The tilling rotor 26C and the tilling rotor 26R have the same configuration as the tilling rotor 26L. In the present specification, the tilling rotors of the central working body 10C, the left working body 10L, and the right working body 10R may be collectively referred to as a “cultivating rotor 26”.

  Returning to FIG. 1, the left extended leveling body rotating mechanism 34L is a mechanism for rotating the left extended leveling body 36L that is rotatably connected to the second left leveling body 30L of the left working body 10L. is there. The left extension leveling body 36L is provided to extend from the end of the left work body 10L in the left direction of the work implement 10, and takes charge of leveling work in an area outside the left work body 10L. The second left leveling body 30L and the left extended leveling body 36L are rotatably connected by the extended leveling body connecting portion 38L, so that the left side left leveling body 36L is folded toward the second left side leveling body 30L. It can be turned.

  Here, in the present embodiment, the left extended leveling body rotating mechanism 34L includes a drive motor unit 34La, a rotating arm 34Lb, and a connecting wire 34Lc. One end of the rotating arm 34Lb is connected to the drive motor unit 34La, and the other end is connected to the connecting wire 34Lc. The connecting wire 34Lc has one end connected to the rotating arm 34Lb and the other end connected to the left extension leveling body 36L.

  When the drive motor unit 34La operates, a rotational driving force is generated, and the rotating arm 34Lb rotates in a substantially horizontal direction. In conjunction with the turning operation of the turning arm 34Lb, the left extended leveling body 36L pulled by the connecting wire 34Lc rotates via the extended leveling body connecting portion 38L. Thereby, accommodation and expansion | deployment of the left side extension leveling body 36L are attained.

  In the present embodiment, an example in which the left extended leveling body rotating mechanism 34L is configured by the drive motor unit 34La, the rotating arm 34Lb, and the connecting wire 34Lc is shown. Other mechanisms may be used as long as the extended leveling body 36L is rotatable.

  Next, the right working body 10R will be described. The right working body 10R includes a right shield cover 24R, a tilling rotor (not shown) disposed below the right shield cover 24R, a transmission frame (chain case) 20R, a first right leveling body 28R, and a second right leveling body 30R. The right leveler control mechanism 32R and the right extension leveling body rotating mechanism 34R are provided. Here, the roles of the right shield cover 24R, the transmission frame 20R, the first right leveling body 28R, the second right leveling body 30R, the right leveler control mechanism 32R, and the right extension leveling body rotating mechanism 34R are respectively described above. Since it is the same as each corresponding element in the left working body 10L, description here is omitted. Further, the right extended leveling body 36R and the extended leveling body connecting part 38R are the same as the left side extended leveling body 36L and the extended ground leveling body connecting part 38L.

  Furthermore, the working machine 10 according to the present embodiment is provided with the center digging plates 40Ca and 40Cb, the left lining plate 40L, and the right digging plate 40R on the central working body 10C, the left working body 10L, and the right working body 10R, respectively. . These are plates for controlling the water flow (actually the flow of water containing soil) generated during the scraping operation, and by providing these mulching plates, the finish of the field surface can be improved.

  For example, the central mulching plates 40Ca and 40Cb are provided at positions where soil is returned to the cage such as a tire of a traveling machine body that travels in front of the work machine 10, and contributes to the flattening of the field undulation caused by the cage. Further, the left side panel 40L and the right side panel 40R bring the soil inward, and draw the surrounding water flow into the back side of each side panel. As a result, even if the hail floats outside the ends of the left work body 10L and the right work body 10R, it is drawn into the respective tillage rotors by the water flow, which contributes to the improvement of the finish on the field surface.

  In addition, the working machine 10 according to the present embodiment includes a left leveler control mechanism 32L and a right leveler control mechanism 32R on the left side work body 10L and the right side work body 10R, respectively. These left-side leveler control mechanism 32L and right-side leveler control mechanism 32R are means for regulating or releasing the rotation of the second left-side leveling body 30L and the second right-side leveling body 30R in the vertical direction, respectively, similarly to the central leveler control mechanism 32C. Function as.

  The left working body 10L and the right working body 10R described above are rotated by the action of the rotating cylinders 46a and 46b via the working body rotating mechanisms 44a and 44b provided at both ends of the central working body 10C. It will be in the storage state or unfolded state. At that time, the first central leveling body 28C and the first left leveling body 28L, and the first central leveling body 28C and the first right leveling body 28R are connected by the first connecting portions 48a and 48b, respectively. In addition, the second central leveling body 30C and the second left leveling body 30L, and the second central leveling body 30C and the second right leveling body 30R are connected by the second connecting portions 50a and 50b, respectively.

  In the present specification and claims, the collective term for the left working body 10L and the right working body 10R may be referred to as a “side working body”. Also, a general term that combines the first left leveling body 28L and the first right leveling body 28R is referred to as “first side leveling body”, or a general term that includes the second left leveling body 30L and the second right leveling body 30R. Sometimes referred to as “second lateral leveling body”. Furthermore, a collective term for the left extension leveling body 36L and the right extension leveling body 36R may be referred to as an “extension leveling body”.

[Configuration of first auxiliary leveling section]
Next, the configuration in the vicinity of the connection portion (second connection portion 50a) between the second central leveling body 30C and the second left leveling body 30L will be described with reference to FIGS.

  FIG. 3 is a diagram illustrating a configuration in the vicinity of a connection portion (second connection portion 50a) between the second central leveling body 30C and the second left leveling body 30L of the work machine 10 according to the first embodiment. FIG. 3A is a diagram showing a configuration in the vicinity of the connecting portion (second connecting portion 50a) in a plan view, and FIG. 3B is a configuration in the vicinity of the connecting portion (second connecting portion 50a) in a rear view. FIG. In addition, although description is abbreviate | omitted here, the connection part (2nd connection part 50b) vicinity of 30 C of 2nd center leveling bodies and 30 R of 2nd right side leveling bodies also has the same structure.

  As shown in FIG. 3, the second central leveling body 30C of the work machine 10 includes a main body 30Ca and a plate 30Cb. The plate portion 30Cb is a portion that comes into contact with the water flow including the soil crushed by the tilling rotor 26 when it finally leaves the work implement 10, and greatly affects the finish of the field surface. Therefore, in the present embodiment, a plurality of substantially triangular cutout portions 52C are provided in the plate portion 30Cb.

  The cutout portion 52C has a structure in which a substantially similar cutout is provided on the top surface of the substantially triangular protrusion in a plan view. By having the plate portion 30Cb having such a structure, the field surface passing through the lower part of the second central leveling body 30C is uniformly flattened, and a field surface having a good finish can be realized.

  In addition, the second left leveling body 30L in the work machine 10 according to the present embodiment includes a main body portion 30La and a plate portion 30Lb. The plate portion 30Lb has a plurality of substantially triangular cutout portions 52L, like the plate portion 30Cb in the second central leveling body 30C.

  At this time, a gap 60 is generated between the main body 30Ca of the second central leveling body 30C and the main body 30La of the second left leveling body 30L. Specifically, the gap 60 is a gap between the side plate 62 constituting the side end portion of the second central leveling body 30C and the side plate 64 constituting the side end portion of the second left leveling body 30L. Therefore, a part of the water flow including the soil crushed by the tilling rotor 26 passes through the gap 60 and flows behind the working machine 10. Here, the interval (width) of the gap 60 is X1.

  Corresponding to the gap 60, the work implement 10 of the present embodiment places the first auxiliary leveling portion 66 between the plate portion 30Cb of the second central leveling body 30C and the plate portion 30Lb of the second left leveling body 30L. I have. Specifically, the first auxiliary leveling portion 66 of the present embodiment is formed by bending the rear end portion of the side plate 64 formed of a plate-like member. Therefore, the 1st auxiliary leveling part 66 is also a plate-shaped member. However, as will be described later, the first auxiliary leveling portion 66 may be formed of a member different from the side plate 64 and bonded to the side plate 64.

  FIG. 3 shows an example in which the first auxiliary leveling portion 66 is provided so as to protrude from the second left leveling body 30L toward the second central leveling body 30C. You may make it protrude toward the 2nd left side leveling body 30L from the leveling body 30C. In any case, it is desirable that the protrusion width X2 at this time be larger than the aforementioned X1. In other words, in the rear view, the first auxiliary leveling portion 66 is disposed so as to cover the gap 60 between the main body portion 30Ca of the second central leveling body 30C and the main body portion 30La of the second left side leveling body 30L. Is desirable. Thus, the 1st auxiliary leveling part 66 can be arrange | positioned so that the water flow which passes the gap | interval 60 may be destroyed by making it protrude larger than the width | variety X1 of the gap | interval 60. FIG.

  At this time, the 1st auxiliary leveling part 66 becomes a shape which has a width | variety longer than board thickness in the direction (height direction) perpendicular | vertical with respect to an agricultural field. Therefore, even if the water flow passing through the gap 60 has a certain height, the water flow can be effectively broken. In other words, the first auxiliary leveling section 66 can receive the water flow passing through the gap 60 on a somewhat wide surface, thereby breaking the high water flow.

  For example, as shown in FIGS. 3 (A) and 3 (B), the first auxiliary leveling portion 66 is opposed to the gap 60 between the second central leveling body 30C and the second left leveling body 30L. One surface 66a and a second surface 66b adjacent to the first surface 66a and having a smaller area than the first surface 66a. As described above, in the present embodiment, the first auxiliary leveling portion 66 is formed by bending the rear end portion of the side plate 64. That is, the first surface 66a is a main surface of the plate-shaped member, and the second surface 66b is a side surface (surface having a plate thickness as a width) of the plate-shaped member.

  Thus, since the 1st surface 66a which is the main surface of a plate-shaped member opposes the gap 60, the 1st auxiliary leveling part 66 of this embodiment is the 1st auxiliary leveling part 66. The first surface 66a. At this time, the first surface 66a of the first auxiliary leveling portion 66 functions as a weir that breaks the water flow, and can efficiently break the water flow even if the water flow that has passed through the gap 60 is formed in the height direction. Thereby, it becomes possible to perform the scraping work without leaving the streaks on the field surface formed by the water flow behind the work implement 10, and the finishing of the scraping work can be improved.

  Further, in the present embodiment, the shape of the first auxiliary leveling unit 66 is devised so that the first auxiliary leveling unit 66 does not form a line behind the work machine 10. FIG. 4 is a diagram illustrating a configuration of the first auxiliary leveling unit 66 in the first embodiment. As shown in FIG. 4, the surface 66ba facing the field on the second surface 66b of the first auxiliary leveling portion 66 is inclined so that the rear end is positioned above the front end in the rear view. That is, the 1st auxiliary leveling part 66 becomes a shape which goes away from an agricultural field, so that it becomes a rear end.

  In the case of such a shape, the rear end portion of the first auxiliary leveling portion 66 does not scratch the surface of the field, and unnecessary lines are not left on the surface of the field. Therefore, in addition to the effect of improving the finish of the scraping work by providing the first auxiliary leveling portion 66, the effect can be further enhanced.

  Further, as described above, the vicinity of the connecting portion (second connecting portion 50b) between the second central leveling body 30C and the second right leveling body 30R also has the same configuration. Therefore, although illustration is omitted, the first auxiliary leveling portion 66 is also provided between the plate portion of the second central leveling body 30C and the plate portion of the second right leveling body 30R. The first auxiliary leveling portion 66 provided between the second central leveling body 30C and the second right leveling body 30R is also arranged to face the gap 60 so as to break the water flow passing through the gap 60. It has the role of canceling the streak caused by the water flow passing through.

  In the present embodiment, an example is shown in which the first auxiliary leveling portion 66 is formed by bending the rear end portion of the side plate 64, but the present invention is not limited to this, and the first auxiliary leveling portion 66 is provided separately from the side plate 64. It is good also as a structure which prepared this and joined it to the side plate 64. In this case, the first auxiliary leveling portion 66 can be made of a material different from that of the side plate 64. For example, the side plate 64 can be made of a metal material, and the first auxiliary leveling portion 66 can be made of another metal material, or can be made of a rubber material, a resin material, or a ceramic material. When the first auxiliary leveling portion 66 is made of a rubber material or a resin material, the second central leveling body 30C and the second side leveling body are connected to each other by the second connecting portions 50a and 50b. There is an effect that it is possible to reduce the sound generated by hitting the first auxiliary leveling portion 66 and the wear of the first auxiliary leveling portion 66 when they are connected together.

  As described above, since the first auxiliary leveling portion 66 is provided so as to face the gap 60 generated between the second central leveling body 30C and the second left leveling body 30L, the work is performed through the gap 60. Since the water flow toward the rear of the machine 10 (particularly, the water flow having a certain height) can be broken, the streaks generated on the field surface due to the gap 60 can be canceled out. As a result, it is possible to obtain a well-finished field surface that is uniformly flattened.

[Configuration of the second auxiliary leveling unit and the third auxiliary leveling unit]
Next, a configuration in the vicinity of the connecting portion (extended leveling body connecting portion 38L) between the second left side leveling body 30L and the left side extended leveling body 36L will be described with reference to FIGS. FIG. 5 is a diagram showing a configuration in the vicinity of a connecting portion (extended leveling body connecting portion 38L) between the second left leveling body 30L and the left extended leveling body 36L. FIG. 5A is a diagram showing a configuration in the vicinity of the connecting portion (extended leveling body connecting portion 38L) in plan view, and FIG. 5B is a view of the vicinity of the connecting portion (extended leveling body connecting portion 38L) in rear view. FIG. FIG. 6 is an enlarged view in which the vicinity of the connecting portion (extended leveling body connecting portion 38L) between the second left side leveling body 30L and the left side extended leveling body 36L is enlarged. In addition, although description is abbreviate | omitted here, the connection part (extension leveling body connection part 38R) vicinity of the 2nd right leveling body 30R and the right side extension leveling body 36R also has the same structure.

  As shown in FIG. 5A, the left extended leveling body 36L includes a plurality of substantially triangular cutout portions 54L, like the second central leveling body 30C and the second left side leveling body 30L. This notch 54L also has a structure in which a substantially similar notch is provided on the top surface of the substantially triangular protrusion. By having the left extension leveling body 36L having such a structure, soil overflowing with water on the side of the left work body 10L during work can be flattened by the left extension leveling body 36L. As a result, it is possible to realize a well-finished field surface that is uniformly flattened.

  At this time, a gap 70 is generated between the main body 30La of the second left leveling body 30L and the left extended leveling body 36L. Specifically, the gap 70 is a gap between the side plate 72 constituting the side end portion of the second left leveling body 30L and the side end portion 74 of the left extended leveling body 36L. Therefore, a part of the soil overflowing with water on the side of the left working body 10L during the tillage work passes through the gap 70 and flows behind the working machine 10. Here, the interval (width) of the gap 70 is X3.

  Corresponding to the gap 70, the work implement 10 of the present embodiment includes a second auxiliary leveling portion 76 between the plate portion 30Lb of the second left leveling body 30L and the left extended leveling body 36L. Specifically, as shown in FIG. 6, the second auxiliary leveling portion 76 is configured by a plate-like member, and is provided so as to protrude from the left-side extended leveling body 36L toward the second left-side leveling body 30L. The protrusion width X4 at this time is preferably larger than the width X3 of the gap 70. Thus, by arranging the second auxiliary leveling portion 76 on the region where the gap 70 is extended, the direction of a part of the water flow passing through the gap 70 can be changed in the direction of the arrow.

  Furthermore, in this embodiment, the 3rd auxiliary leveling part 78 comprised with a plate-shaped member is provided in the side edge part of plate part 30Lb of the 2nd left side leveling body 30L. In the present embodiment, the third auxiliary leveling portion 78 includes a first surface 78a that faces the second auxiliary leveling portion 76, a second surface 78b that is adjacent to the first surface 78a and has a smaller area than the first surface 78a. Have That is, the first surface 78a is a main surface of the plate-shaped member, and the second surface 78b is a side surface (surface having a plate thickness as a width) of the plate-shaped member. And as FIG.5 and FIG.6 shows, the 1st surface 78a of the 3rd auxiliary leveling part 78 inclines so that the upper end may approach the 2nd auxiliary leveling part 76 rather than a lower end.

  According to the present embodiment, the water flow that has passed through the gap 70 first hits the second auxiliary leveling portion 76, and a part of the water flow changes its direction as indicated by the arrow in FIG. 6 to the third auxiliary leveling portion 78. It is thought that Then, the water flow whose direction has been changed hits the first surface 78 a of the third auxiliary leveling portion 78 and is collapsed, and a part thereof is pushed back toward the second auxiliary leveling portion 76. As a result, a turbulent flow is generated between the second auxiliary leveling portion 76 and the third auxiliary leveling portion 78, and the water flow that has passed through the gap 70 is also affected by the turbulent flow and is destroyed. Therefore, even if the water flow passing through the gap 70 has a certain height, it is considered that the entire water flow can be destroyed due to the influence of the turbulent flow.

  As described above, in this embodiment, the gap 70 is provided by providing the second auxiliary leveling portion 76 and the third auxiliary leveling portion 78 between the plate portion 30Lb of the second left leveling body 30L and the left extended leveling body 36L. It is possible to break a water flow (particularly a water flow having a certain level of height) passing through the rear of the work machine 10. Thereby, the stripe | line | muscle which arises on the field surface due to the gap | interval 70 can be negated, and the field surface with the good finishing which was uniformly planarized can be obtained.

  By the way, as described above, the vicinity of the connecting portion (extended leveling body connecting portion 38R) between the second right side leveling body 30R and the right side extended leveling body 36R has the same configuration. Therefore, although illustration is omitted, a second auxiliary leveling portion 76 and a third auxiliary leveling portion 78 are also provided between the plate portion of the second right leveling body 30R and the right extended leveling body 36R. The second auxiliary leveling portion 76 and the third auxiliary leveling portion 78 provided between the second right side leveling body 30R and the right side extended leveling body 36R also breaks the water flow passing through the gap 70 to become a water flow passing through the gap 70. It has the role of canceling the resulting streaks.

  In addition, as FIG. 5 (B) shows, the 2nd auxiliary leveling part 76 of this embodiment is joined as another member with respect to the left side extended leveling body 36L. Here, the 2nd auxiliary leveling part 76 is comprised with a plate-shaped member (plate member), and the thickness is made into the height of the notch part 54L provided in the left side extended leveling body 36L (substantially triangular-shaped protrusion part). Height). Thereby, the position of the 2nd auxiliary leveling part 76 becomes higher by the thickness than the position of the left side extended leveling body 36L, and the effect of flattening the field surface by the second auxiliary leveling part 76 can be further improved. . Of course, you may integrally form the 2nd auxiliary leveling part 76 and the left side extended leveling body 36L. That is, it is also possible to form the second auxiliary leveling portion 76 by projecting a part of the left side extended leveling body 36L onto a region where the gap 70 is extended.

  Moreover, the 3rd auxiliary leveling part 78 of this embodiment is joined as another member with respect to the plate part 30Lb of the 2nd left leveling body 30L. Here, the 3rd auxiliary leveling part 78 is comprised with the plate-shaped member (plate member). In this case, the 3rd auxiliary leveling part 78 can also be comprised with the material different from plate part 30Lb. For example, the plate portion 30Lb can be made of a metal material, and the third auxiliary leveling portion 78 can be made of another metal material, or can be made of a rubber material, a resin material, or a ceramic material.

  When the third auxiliary leveling portion 78 is made of a rubber material or a resin material, when the second left leveling body 30L and the left extended leveling body 36L are connected by the extended leveling body connecting portion 38L, they are connected in a mutually displaced state. There is an effect that it is possible to reduce the sound generated by hitting the third auxiliary leveling portion 78 and the wear of the third auxiliary leveling portion 78 when being made. Of course, the third auxiliary leveling portion 78 may be formed by bending the side end portion of the plate portion 30Lb of the second left leveling body 30L. The same applies to the third auxiliary leveling portion 78 provided between the second right leveling body 30R and the right extended leveling body 36R.

  The work machine 10 according to the first embodiment described above includes the first auxiliary leveling unit between the second central leveling body 30C and the second side leveling body (the second left side leveling body 30L and the second right side leveling body 30R). 66, and further includes a second auxiliary leveling unit 76 and a third auxiliary leveling unit 78 between the second side leveling body and the extended leveling body (the left side extension leveling body 36L and the right side side extension leveling body 36R). Thereby, the water flow which passes the gap | interval 60 and the gap | interval 70 can be destroyed, and it can prevent that the stripe | line | muscle by the shift | offset | difference of soil remains behind the working machine 10. FIG. As a result, the work machine 10 according to the first embodiment can improve the finish of the field surface in the scraping work.

  In addition, even if it does not necessarily use together the 1st auxiliary leveling part 66, the 2nd auxiliary leveling part 76, and the 3rd auxiliary leveling part 78, there can exist the effect by this embodiment. For example, even if the working machine is provided with only the first auxiliary leveling unit 66 between the second central leveling body 30C and the second side leveling body, it is possible to sufficiently improve the finish of the field surface in the scraping work. it can. Further, the second auxiliary leveling unit 76 and the third auxiliary leveling unit 78 are not necessarily used in combination. That is, it is good also as a working machine which provided only the 2nd auxiliary leveling part 76 between the 2nd side leveling body and the extended leveling body, respectively.

Second Embodiment
In 1st Embodiment, although the example which provided the 1st auxiliary leveling part 66 in the 2nd left leveling body 30L was shown, you may provide not only in this but in the 2nd center leveling body 30C. For example, in FIG. 3, the side plate 62 is extended to the plate portion 30Cb of the second central leveling body 30C, and the rear end portion is bent toward the second left leveling body 30L to form the first auxiliary leveling portion 66. Also good. Of course, the first auxiliary leveling section 66 may be formed of a member different from the side plate 62.

  Even in this case, the first auxiliary leveling portion 66 is disposed so as to cover the gap 60 between the main body portion 30Ca of the second central leveling body 30C and the main body portion 30La of the second left leveling body 30L in the rear view. That's fine. The same applies to the first auxiliary leveling portion 66 provided between the second central leveling body 30C and the second right leveling body 30R.

<Third Embodiment>
In 1st Embodiment, although the example provided with the 1st auxiliary leveling part 66 between the 2nd center leveling body 30C and the 2nd side leveling body was shown, not only this but a 2nd side leveling body and A first auxiliary leveling unit 66 may be provided between the extended leveling body. For example, in FIG. 5, the rear end portion of the side end portion 74 of the left side extended leveling body 36L is bent, and the first auxiliary leveling surface having the first surface 66a facing the gap 70 as shown in FIG. The portion 66 may be integrally formed. Of course, you may form the 1st auxiliary leveling part 66 with a member different from the left side extension leveling body 36L.

  Even in such a case, in the rear view, the first auxiliary so as to cover the gap 70 between the side plate 72 constituting the side end of the second left leveling body 30L and the side end 74 of the left extended leveling body 36L. The leveling portion 66 may be disposed. The same applies to the first auxiliary leveling portion 66 provided between the second right leveling body 30R and the right extended leveling body 36R.

<Fourth embodiment>
In 1st Embodiment, although the working machine 10 which has a side working body was illustrated, it is not restricted to this, The working machine which does not have the side working body which can be folded or expand | deployed may be sufficient. For example, in a working machine that does not have a foldable or unfoldable side working body, an extended leveling body is provided at both ends of the working body, and the second auxiliary leveling unit 76 and the second leveling body 76 are provided between the working body and the extended leveling body. Three auxiliary leveling sections 78 may be provided.

  Even in this case, at least the second auxiliary leveling portion 76 may be disposed on a region in which the gap between the side end portions of the working body and the side end portions of each extended leveling body is extended in plan view.

  Further, as in the third embodiment, the first auxiliary leveling unit 66 can be disposed between the working body and the extended leveling body. Even in such a case, in the rear view, the gap between the side plate constituting the side end portion of the second leveling body (the portion corresponding to the leveler) of the working body and the side end portion of each extended leveling body is covered. The first auxiliary leveling unit 66 may be disposed.

  The present invention has been described above with reference to the drawings. However, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention. For example, those in which those skilled in the art appropriately added, deleted, or changed the design based on the working machine of each embodiment are also included in the scope of the present invention as long as they have the gist of the present invention. Furthermore, the above-described embodiments can be appropriately combined as long as there is no contradiction between them, and technical matters common to the embodiments are included in the embodiments even if there is no explicit description.

  In addition, even for other operational effects different from the operational effects brought about by the aspects of the above-described embodiments, those that are apparent from the description of the present specification, or that can be easily predicted by those skilled in the art, Of course, it is understood that the present invention provides.

  DESCRIPTION OF SYMBOLS 10 ... Work machine, 10C ... Central work body, 10L ... Left work body, 10R ... Right work body, 12 ... Top mast, 14 ... Lower link connection part, 16 ... Input shaft, 18 ... Support frame, 20C, 20L, 20R ... Transmission frame (chain case), 22 ... Gear box, 24C ... Center shield cover, 24L ... Left shield cover, 24R ... Right shield cover, 26, 26C, 26L, 26R ... Cultivation rotor, 26La ... Rotary shaft (claw shaft) , 26Lb ... Tilling claws, 28C ... first center leveling body, 28L ... first left side leveling body, 28R ... first right side leveling body, 30C ... second center leveling body, 30Ca ... main body part, 30Cb ... plate part, 30L ... Second left leveling body, 30La ... main body, 30Lb ... plate part, 30R ... second right leveling body, 31a ... apron control mechanism, 32C ... central level Control mechanism, 32L ... Left side leveler control mechanism, 32R ... Right side leveler control mechanism, 34L ... Left side extension leveling body rotation mechanism, 34La ... Drive motor unit, 34Lb ... Rotation arm, 34Lc ... Connection wire, 34R ... Right side extension leveling body Rotating mechanism, 36L ... Left side extension leveling body, 36R ... Right side extension leveling body, 38L ... Extension leveling body connection part, 38R ... Extension leveling body connection part, 40Ca, 40Cb ... Center mulch plate, 40L ... Left side slab plate, 40R ... Right side plate, 44a ... working body turning mechanism, 46a ... turning cylinder, 48a ... first connecting portion, 50a ... second connecting portion, 52C, 52L, 54L ... notched portion, 60, 70 ... gap, 62, 64, 72 ... side plate, 66 ... first auxiliary leveling section, 66a ... first surface, 66b ... second surface, 66ba ... surface facing the field, 74 ... side end, 76 ... second auxiliary leveling , 78 ... third auxiliary leveling unit, 78a ... first face, 78b ... second surface

Claims (10)

A tillage rotor,
A central working body that is disposed rearward with respect to the traveling direction of the tilling rotor and includes a first central leveling body and a second central leveling body provided at a rear end portion of the first central leveling body;
A side working body that is rotatably connected to the central working body and includes a first side leveling body and a second side leveling body provided at a rear end of the first side leveling body;
The second central leveling body and the second lateral leveling body are disposed between the second central leveling body and the second central leveling body and project from one of the second central leveling body and the second lateral leveling body to the other. 1 auxiliary leveling part,
The first auxiliary leveling portion has a first surface facing a gap between the second central leveling body and the second side leveling body, and is adjacent to the first surface and has an area larger than the first surface. A work machine having a small second surface.   The work machine according to claim 1, wherein the first auxiliary leveling portion is a plate-like member having the second surface as a side surface. The second central leveling body and the second side leveling body are each composed of a main body portion and a plate portion,
The work machine according to claim 1 or 2, wherein the first auxiliary leveling portion is disposed between a plate portion of the second central leveling body and a plate portion of the second side leveling body. The second central leveling body and the second side leveling body are each composed of a main body portion and a plate portion,
3. The work machine according to claim 1, wherein the first auxiliary leveling portion covers a gap between the main body portion of the second central leveling body and the main body portion of the second side leveling body in a rear view. .   5. The work according to claim 1, wherein a surface of the first auxiliary leveling portion facing the farm field on the second surface is inclined such that a rear end is positioned higher than a front end. Machine. And an extended leveling body rotatably connected to the second side leveling body.
A second auxiliary leveling portion disposed between the second side leveling body and the extended leveling body and provided to project from one of the second side leveling body and the extended leveling body toward the other side. The working machine according to claim 1, comprising: The second lateral leveling body is composed of a main body part and a plate part,
The work machine according to claim 6, wherein the second auxiliary leveling unit is disposed between the plate portion of the second side leveling body and the extended leveling body. The second lateral leveling body is composed of a main body part and a plate part,
The working machine according to claim 6 or 7, wherein a protruding width of the second auxiliary leveling portion is larger than a maximum width of a gap between the main body portion of the second side leveling body and the extended leveling body. A third auxiliary leveling unit disposed between the second side leveling unit and the extended leveling unit, and facing the second auxiliary leveling unit;
The third auxiliary leveling portion has a first surface facing the second auxiliary leveling portion, and a second surface adjacent to the first surface and having a smaller area than the first surface,
The work machine according to any one of claims 6 to 8, wherein the first surface is inclined such that an upper end is closer to the second auxiliary leveling portion than a lower end.   The work machine according to claim 9, wherein the third auxiliary leveling portion is a plate-like member having the second surface as a side surface.

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