JP2019037191A - Planting work machine - Google Patents

Abstract

To provide a planting work machine that can make a scraping shaft more compact and at low cost, in the planting work machine capable of adjusting a scraping amount of seedlings scraped by a planting unit from a seedling loading platform by making the seedling loading platform swing through an arm swinging on the scraping shaft.SOLUTION: A planting work machine includes: a seedling loading platform 18; multiple planter cases 19 arranged in parallel in the left and right directions at the lower side of the seedling loading platform 18; a transmission shaft case 27 for transmitting power from an engine to each planter case 19; a planting unit 21 for scraping seedlings on the seedling loading platform 18 and planting them in a field; and a scraping shaft 31 for supporting an arm 32 for vertically swinging the seedling loading platform 18 in order to adjust a scraping amount of the seedlings scraped from the seedling loading platform 18. The transmission shaft case 27 is formed of a flange 30 for connection in the connection with the planter case 19. The flange 30 is provided with a scraping shaft support part 41 for mounting and supporting the scraping shaft 31.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a planting machine capable of adjusting the amount of seedling scraped from a seedling stand.

  A seedling platform inclined obliquely downward toward the rear, a plurality of planter cases in the front-rear direction arranged side by side in the left-right direction below the seedling platform, and a transmission shaft case that transmits power from the engine to each planter case And a planting part provided in the planter case for scraping the seedling on the seedling stage and planting it in the field, and for adjusting the scraping amount of the seedling scraped from the seedling stage by the planting part A planting work machine according to Patent Document 1, which includes a scraping shaft that supports an arm that swings the mounting table up and down, and is configured to be able to adjust the amount of seedlings to be planted on the field by the planting unit. Is conventionally known.

JP 2000-4613 A

  In the above-mentioned document, the amount of seedling per plant planted by the planting unit can be adjusted by adjusting the vertical position of the seedling stage through the arm supported by the scraping shaft. Since the scraping shaft is attached and supported on the side of the horizontal frame via a dedicated bracket so as not to interfere with the planter case, there is a problem that assembly work takes time and costs are increased.

  The present invention provides a planting structure in which the planting unit can adjust the scraping amount of the seedling scraped from the seedling stage by swinging the seedling stage up and down using an arm that swings around the scraping shaft. It is an object of the present invention to provide a planting work machine in which the scraping shaft can be configured more compactly and at low cost.

  In order to solve the above-mentioned problems, first, the present invention is a planting work machine for planting seedlings, and a seedling mounting base 18 inclined obliquely downward toward the rear, and the seedling mounting base 18. A plurality of planter cases 19 in the front-rear direction arranged side by side in the left-right direction, a transmission shaft case 27 that transmits power from the engine to each planter case 19, and a planter case 19 provided on the seedling stage 18 A planting part 21 for scraping seedlings and planting them in a farm, and an arm 32 for swinging the seedling stage 18 up and down in order to adjust the amount of seedlings scraped from the seedling stage 18 by the planting part 21 The transmission shaft case 27 has a connecting flange 30 formed at the connecting portion with the planter case 19, and the flange 30 attaches and supports the scraping shaft 31. Special feature is that the spindle support 41 is provided. It is set to.

  Secondly, the flange 30 has a float shaft support portion 43 that supports a float shaft 34 that supports a float 22 that swings following the field scene below the planting portion 21, and the seedling mounting. A frame support portion 42 that supports the support frame 17 that supports the base 18 is provided.

  In order to fix the scraping shaft on the planting work machine side by using the scraping support portion for supporting the scraping shaft on the flange used when mounting and fixing the transmission shaft case on the planter case side Since it is not necessary to provide a dedicated member separately, the number of parts can be reduced and the cost can be kept low.

  In addition, the flange is supported by a float shaft support portion that supports a float shaft that supports a float that swings following a farming field below the planting portion, and a support frame that supports the seedling platform. According to the structure provided with the frame support portion to be provided, since the number of members shared by the flange is further increased, the cost can be further reduced and the assembling work of the float and the seedling table becomes smoother.

It is the whole riding rice transplanter to which the transplanter of the present invention is applied. It is a principal part top view of a planting work machine. It is the principal part top view which showed the support structure of the scraping shaft. It is the principal part top view which showed the support structure of the float axis | shaft. It is the principal part rear view which showed the support structure of the scraping shaft and the float shaft. It is the principal part side view which showed the structure which supports a scraping axis | shaft to the flange side. It is the principal part side view which showed the structure which supports a seedling stand support stay in the flange side. It is the principal part side view which showed the structure which supports a scraping axis | shaft and a float axis | shaft on the flange side.

  Hereinafter, embodiments of the present invention will be described based on illustrated examples. FIG. 1 is an overall side view of a riding rice transplanter to which a transplanter of the present invention is applied. The illustrated riding rice transplanter includes a traveling machine body 3 having a pair of left and right front wheels 1, 1 and rear wheels 2, 2, and a planting that is connected to a rear end portion of the traveling machine body 3 through a lifting link 4 so as to be movable up and down. And a work machine 6.

  The traveling machine body 3 is disposed on the front side of the bonnet 7 covering the engine, on the left and right side of the bonnet 7, and on the rear side of the bonnet 7 so that an operator can ride on the traveling body 3. A steering section 9 is installed.

  The steering unit 9 includes a seat 11 on which an operator is seated, a steering handle 12 disposed on the front side of the seat 11, and a lateral movement of the seat 11 to a planting work machine by a back-and-forth swing operation. There are provided a planting operation lever 13 for operating the power on and off, and a travel lever 14 which is a travel operation tool disposed on the side of the steering handle 12.

  The planting work machine 6 includes a horizontal frame 16 that is supported by the elevating link 4 so as to be freely rollable, and a seedling on which a seedling is placed on the back side while inclining upward from the side of the horizontal frame 16 toward the front. A mounting table 18 and a planting unit 21 arranged in parallel in the left-right direction below the seedling mounting table 18 are provided, and the planting unit scrapes the seedling mounting table 18 to plant the planting field. It is configured to perform supplementary work. Hereinafter, a specific configuration of the planting work machine 6 will be described.

  Next, based on FIG. 1 thru | or 5, the specific structure of a planting work machine is demonstrated. FIG. 2 is a plan view of a main part of the planting machine. FIG. 3 is a plan view of the main part showing the support structure of the scraping shaft, FIG. 4 is a plan view of the main part showing the support structure of the float shaft, and FIG. 5 is a plan view of the scraping shaft and the float shaft. It is the principal part rear view which showed the support structure.

  The planting machine 6 includes the horizontal frame 16, the seedling stage 18, and a seedling stage support frame (supporting the seedling stage 18 that extends vertically from the horizontal frame 16 and supports the seedling stage 18. (Support frame) 17, a plurality of (three in the illustrated example) planter cases 19 extending rearward from the horizontal frame 16, and rotatably supported on the rear side surface of the planter case 19. The horizontal frame includes a planting unit 21 that scrapes seedlings on the seedling stage 18 and plants the seedlings on the seedling stage 18 and a float 22 that leveles the field arranged side by side on the lower side of the planter case 19. 16 is supported on the elevating link 4 so as to be freely rollable.

  The lateral frame 16 includes a drive case 26 to which a PTO shaft 25 to which power from the traveling machine body 3 is transmitted is connected, and a transmission shaft case for transmitting the power transmitted to the drive case 26 to each planter case 19 side. 27.

  Specifically, in the illustrated example, the horizontal frame 16 is connected to the drive case 26 and the right transmission shaft case 27R connected to the right side of the drive case 26 and the right planter case 19R connected to the left and right outer sides. And a left transmission shaft case 27L connected at one end side to the central planter case 19C connected to the left side of the drive case 26 and connected at the other end side to the left planter case 19L (see FIG. 3).

  Each transmission shaft case 27 is formed in a cylindrical shape in which a transmission shaft for transmitting the power transmitted to the drive case 26 to each planter case 19 (planting portion 21) is provided. The drive case 26 or the planter case 19 can be bolted via a connecting flange 30 formed on the end side.

  At this time, a scraping shaft 31 that supports an arm 32 for operating the vertical swing operation of the seedling table 18 is supported on the flange 30 (see FIGS. 2 to 4). A specific support structure for the flange 31 on the side of the flange 31 will be described later.

  The seedling stage 18 is supported by an apron 24 disposed on the rear upper side of the planter case 19, and the seedling stage 18 is supported by the scraping amount adjusting lever 23 supported on the lateral frame 16 side. The apron 24 is configured to be movable up and down by being operated in the vertical direction. Thereby, the quantity which the said planting part 21 scrapes off the seedling on the seedling mounting stand 18 at once can be adjusted. Further, the apron 24 is provided with a notch 24a through which a rotation locus on the tip side of the planting portion 21 passes (see FIG. 2).

  At this time, the scraping amount adjusting lever 23 is configured to be supported on the flange 30 side. A structure for supporting the scraping amount adjusting lever 23 on the flange 30 side will be described later.

  The planting part 21 is configured to be rotationally driven along a long circular locus in the vertical direction on the rear side of the planter case 19 by the power transmitted from the traveling machine body 3 side. With this rotational drive, the seedling placed on the seedling stage 18 can be scraped and a planting operation for planting the scraped seedling on the farm scene side can be performed.

  In the example shown in the drawing, the float 22 is supported at the lower side of the drive case 26 and has a notch formed at the rear so that the rotation locus of the planting portion 21 supported by the central planter case 19C passes through. A float 22C, a right float 22R arranged directly below the right planter case so that the rotation trajectories of the planting parts 21, 21 supported on both sides of the right planter case 19R pass, and the left planter case 19L A left float 22L disposed directly below the left planter case 19L is supported side by side in the left-right direction so that the rotation trajectories of the planting parts 21 and 21 supported on both side surfaces pass.

  Each float 22 is supported so that the front end side thereof can swing up and down, and a float support arm 33 is connected to the rear side of each float 22 via a rotation shaft. The float support arm 33 is pivotally supported by a left and right float shaft 34 supported on the side of the horizontal frame 16 (see FIG. 1).

  A planting depth adjustment lever 36 is connected to the float shaft 34, and the float support arm 33 is pivoted up and down in conjunction with the forward / backward swing operation of the planting depth adjustment lever 36. It is configured. Thereby, the planting depth by the planting work machine 6 can be adjusted by displacing the float 22 in the vertical direction by the planting depth adjusting lever 36.

  At this time, the float shaft 34 and the planting depth adjusting lever 36 are configured to be supported on the flange 30 side. A structure for supporting the float shaft 34 and the planting depth adjusting lever 36 to the flange 30 will be described later.

  Next, the details of the flange support structure will be described with reference to FIGS. FIG. 6 is a main part side view showing a structure for supporting the scraping shaft on the flange side, and FIG. 7 is a main part side view showing a structure for supporting the seedling stage support stay on the flange side, FIG. 8 is a side view of an essential part showing a structure for supporting the scraping shaft and the float shaft on the flange side.

  The flange 30 is formed by extending in a plate shape in a direction orthogonal to the transmission shaft on the end side of the transmission shaft case 27, and the transmission shaft case 27 is connected to the left and right planter cases 19 via the flange 30. (Or the drive case 27) is fixed to the side of the bolt to constitute the horizontal frame 16. At this time, the flange 30 extends broadly from the center side of the transmission shaft housed in the transmission shaft case 27 toward the outer peripheral side (so as to be on a triangle in the illustrated example), and further upward and By extending rearwardly, the scraping shaft support portion 41 that supports the scraping shaft 31, the seedling table support portion 42 that supports the seedling table support stay 17, and the float shaft 34 are supported. A float support 43 is formed (see FIGS. 6 to 8). This will be specifically described below.

  The scraping shaft support portion 41 is provided on the rear side of the flange 30 and is formed by recessing a part of the flange 30 downward so that the scraping shaft 31 is fitted. Has been. Further, the scraping shaft 31 supported so as to be rotatable on the rear side of the transmission shaft case 27 by the scraping shaft support portion 41 includes the scraping amount adjusting lever 23 extending forward and upward, A swing arm (arm) 32 that protrudes rearward and swings the apron 24 up and down is provided so as to rotate integrally (see FIG. 6).

  That is, the scraping shaft 31 is integrated with the left and right transmission shaft cases 27 by being rotatably supported by the scraping shaft support portion 41 at the rear portion of the flange 30. Assembly work becomes easy. Further, when the scraping amount adjusting lever 23 is swung in the front-rear direction, the vertical position of the seedling table 18 is adjusted via the scraping shaft 31 and the swing arm 32. Therefore, the amount of seedlings that the planting part 21 scrapes off from the seedling stage 18 can be adjusted.

  Further, the scraping shaft 31 is formed in a rod shape having a length corresponding to the length of each transmission shaft case 27, and both ends thereof are supported by flanges 30 provided on both ends of each transmission shaft case 27. (See FIG. 5). Accordingly, the scraping shaft 31 is assembled to the planting work machine 6 side in a state of being integrally supported with the left and right transmission shaft cases 27L and 27R. The assembling work of the scraping amount adjusting lever 23 and the like supported by 31 is also facilitated.

  By the way, between the left and right scraping shafts 31, 31 (transmission shaft case 27), rod-like connecting members for integrally connecting and reinforcing the left and right transmission shaft cases 27L, 27R and the central plan case 17C. 35 is installed. Specifically, both ends of the connecting member 35 are mounted and supported on the flange 30 side via connecting plates 38, 38, and the connecting plate 38 is a flange on the left and right center side of the left and right transmission shaft cases 27. The bolt 30 is fixed to a fixing hole 38a drilled below the cutting shaft support portion 41 (see FIGS. 5 and 6).

  Thus, the connecting member 35 is attached to the left and right transmission shaft cases 27L and 27R via the connecting plate 38, so that the middle part of the connecting member 35 is bent and formed in a crank shape. Even when the height positions are different, the left and right transmission shaft cases 27L, 27R can be connected to the flanges 30, 30 side (see FIG. 5).

  The seedling stage support portion 42 is a portion extending above the flange 30 and has a fixing hole 42a in which a support bracket 46 that supports the seedling stage support stay 17 is bolted. Yes. Thereby, the seedling support stand 17 is configured to be supported on the side of the horizontal frame 16 via the support bracket 46.

  The support bracket 46 includes a cylindrical part 46a that supports the seedling stage support stay 17 so that the lower end side of the seedling stage support stay 17 is inserted, and a seedling stage on the flange 30 upper side that extends to the rear side of the cylindrical part. And a plate-like mounting portion 46b that is bolted to the fixing hole 42a on the support portion 42 side, and supports the lower end side of the seedling support stand 17 disposed on the front side of the transmission shaft case 27 on the side of the horizontal frame 16. (See FIG. 7).

  The float support portion 43 is formed on the lower side of the flange 30 and is provided with a fixing hole 43a in the front and rear where a float shaft mounting member 47 for mounting and fixing the float shaft 34 is bolted. Thus, the planting depth adjusting lever 36 and the float support arm 33 are configured to be attached to the side of the lateral frame 16 via the float shaft attachment member 47 and the float shaft 34. This will be specifically described below.

  The float shaft mounting member 47 is bolted to the front and rear bolt holes 43a, 43a on the lower side of the flange 30 and is curved downward in an arc shape so as to avoid the transmission shaft case 27. The float shaft 34 is supported on the rear side. Further, a float shaft 34 attached to the side of the horizontal frame 16 via a float shaft attachment member 47 includes a planting depth adjusting lever 36 extending from the float shaft 34 to the front upper side, and the float shaft. The float support arm 33 extending from the rear to the lower rear side is pivotally supported (see FIG. 8).

  According to this configuration, when the planting depth adjustment lever 36 is swung back and forth, the rear side of the float 22 is swung up and down via the float shaft 34 and the float support arm 33, thereby Therefore, the planting depth of the seedling in the planting operation by the planting unit 21 can be adjusted.

  Further, the bolt fixing hole for attaching the float shaft attaching portion 47 to the flange 30 side is also used as a bolt fixing hole used for attaching and fixing the transmission shaft case 27 to the planter case 19 or the drive case 27 side. Therefore, it is not necessary to form the flange 30 larger than necessary, and the number of members for supporting the float shaft 34 can be reduced. Therefore, the entire planting work machine can be configured more compactly and at low cost.

  As described above, the scraper shaft 31, the seedling stage support stay 17, and the float shaft 34 are laterally mounted on the flange 30 in addition to being used for mounting and fixing the transmission shaft case 27 to the planter case 19 side. Since the function as a member for supporting on the frame 16 side is also used, the number of parts can be reduced, the cost can be kept low, and the assembling work of these parts can be facilitated.

6 Planting machine 17 Seedling stand support stay (support frame)
18 seedling stand 19 planter case 21 planting part 22 float 27 transmission shaft case 30 flange 31 scraping shaft 32 (arm)
34 Float shaft 41 Scraping shaft support (scraping support)
42 Seedling stand support part (frame support part)
43 Float support (float shaft support)

Claims (2)

A planting machine for planting seedlings,
A seedling stand (18) inclined obliquely downward toward the rear;
A planter case (19) in the front-rear direction arranged in the left-right direction on the lower side of the seedling mount (18);
A transmission shaft case (27) for transmitting power from the engine to each planter case (19);
A planting part (21) provided on the planter case (19) for scraping off the seedlings on the seedling stage (18) and planting them in the field;
A scraping shaft that supports an arm (32) that swings the seedling stage (18) up and down in order to adjust the scraping amount of the seedling that is scraped from the seedling stage (18) by the planting part (21). 31)
The transmission shaft case (27) has a connecting flange (30) formed at a connecting portion with the planter case (19),
The flange (30) is a planting work machine provided with a scraping shaft support portion (41) for mounting and supporting the scraping shaft (31). In the flange (30),
A float shaft support portion (43) on which a float shaft (34) that supports a float (22) that swings following a farming scene is supported below the planting portion (21);
The planting work machine according to claim 1, further comprising: a frame support portion (42) for supporting a support frame (17) for supporting the seedling stage (18).

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