JP6908471B2 - Planting work machine - Google Patents

Description

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

A seedling stand that slopes diagonally downward toward the rear, a planter case in the front-rear direction that is arranged side by side in the left-right direction on the lower side of the seedling stand, and a transmission shaft case that transmits power from the engine to each planter case. And the planting part provided in the planter case to scrape the seedlings on the seedling stand and plant them in the field, and the seedlings to adjust the amount of seedlings scraped from the seedling stand by the planting part. The planting work machine according to Patent Document 1, which is provided with a scraping shaft for supporting an arm that swings the mount up and down, and is configured so that the amount of seedlings to be planted in the field can be adjusted by the planting portion. Is conventionally known.

Japanese Unexamined Patent Publication No. 2000-4613

In the above document, the amount of seedlings per plant to be planted by the planting portion can be adjusted by adjusting the vertical position of the seedling stand via the arm supported by the scraping shaft. Since the scraping shaft is mounted and supported on the horizontal frame side via a dedicated bracket so as not to interfere with the planter case side, there is a problem that the assembling work is troublesome and the cost is high.

In the present invention, the planting portion is configured to be able to adjust the amount of seedlings scraped from the seedling stand by swinging the seedling stand 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 capable of constructing the scraping shaft more compactly and at low cost.

In order to solve the above problems, the present invention is firstly a planting work machine for planting seedlings, which is a seedling mounting table 18 inclined diagonally downward toward the rear and the seedling mounting table 18. A planter case 19 in the front-rear direction arranged side by side in the left-right direction on the lower side of the plant, a transmission shaft case 27 for transmitting power from the engine to each planter case 19, and a seedling stand 18 provided on the planter case 19. A planting section 21 that scrapes seedlings and plants them in a field, and an arm 32 that swings the seedling stand 18 up and down in order to adjust the amount of seedlings scraped from the seedling stand 18 by the planting section 21. The transmission shaft case 27 is provided with a scraping shaft 31 for supporting the scraping shaft 31, and a flange 30 for connecting is formed at a connecting portion with the planter case 19, and the flange 30 mounts and supports the scraping shaft 31. It is characterized in that the shaft support portion 41 is provided.

Secondly, the flange 30 has a float shaft support portion 43 on which a float shaft 34 that supports a float 22 that swings following a field scene is supported on the lower side of the planting portion 21, and a seedling mounting portion. It is characterized in that a frame support portion 42 for supporting a support frame 17 for supporting the base 18 is provided.

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

Further, the flange is supported by a float shaft support portion that supports a float shaft that swings following the field scene on the lower side of the planting portion, and a support frame that supports the seedling stand. According to the one provided with the frame support portion to be provided, the number of members also used by the flange is further increased, so that the cost can be kept lower and the assembly work of the float and the seedling stand becomes smoother.

It is an overall side view of the passenger rice transplanter to which the transplanter of this invention was applied. It is a top view of the main part of a planting work machine. It is a main part plan view which showed the support structure of a scraping shaft. It is a main part plan view which showed the support structure of a float shaft. It is a rear view of the main part which showed the support structure of a scraping shaft and a float shaft. It is a side view of the main part which showed the structure which supports a scraping shaft on a flange side. It is a side view of the main part which showed the structure which supports the seedling stand support stay on the flange side. It is a side view of the main part which showed the structure which supports a scraping shaft and a float shaft on a flange side.

Hereinafter, embodiments of the present invention will be described based on the illustrated examples. FIG. 1 is an overall side view of a passenger rice transplanter to which the transplanter of the present invention is applied. The illustrated passenger rice transplanter is a traveling machine 3 having a pair of left and right front wheels 1, 1 and rear wheels 2, 2, and is planted so as to be vertically connected to the rear end of the traveling machine 3 via an elevating link 4. It is equipped with a working machine 6.

The traveling machine body 3 has a bonnet 7 that covers the engine arranged on the front side, a spare seedling stand 8 provided on the left and right sides of the bonnet 7, and an operator placed behind the bonnet 7. A control unit 9 for inserting is installed.

The control unit 9 has a seat 11 on which the operator sits, a steering handle 12 arranged on the front side of the seat 11, and a steering handle 12 arranged on the side side of the seat 11 to the planting work machine by a forward / backward swing operation. A planting operation lever 13 for operating the intermittent power of the steering wheel 12 and a traveling lever 14 which is a traveling operating tool arranged on the side side of the steering handle 12 are provided.

The planting work machine 6 has a horizontal frame 16 that is rotatably supported by the elevating link 4, and seedlings on which seedlings are placed on the back side, which is steeply inclined upward from the horizontal frame 16 side toward the front. A mounting table 18 and a plurality of planting portions 21 arranged in parallel in the left-right direction on the lower side of the seedling mounting table 18 are provided, and the planting section scrapes the seedling mounting table 18 and plants the seedlings in the field. It is configured to perform sapling work. Hereinafter, a specific configuration of the planting work machine 6 will be described.

Next, a specific configuration of the planting work machine will be described with reference to FIGS. 1 to 5. FIG. 2 is a plan view of a main part of the planting work 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 back view of the main part which showed the support structure.

The planting work machine 6 includes the horizontal frame 16, the seedling stand 18, and a seedling stand support frame (a seedling stand support frame that extends upward from the horizontal frame 16 in the vertical direction to support the seedling stand 18. A support frame) 17, a plurality of planter cases 19 extending rearward from the horizontal frame 16 (three in the illustrated example), and rotatably supported on the rear side surface side of the planter case 19. The horizontal frame is provided with a planting portion 21 for scraping seedlings on the seedling stand 18 for planting in the field, and a float 22 for leveling the fields arranged side by side on the lower side of the planter case 19. 16 is rotatably supported by the elevating link 4.

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

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

Each transmission shaft case 27 is formed in a tubular shape in which a transmission shaft that transmits the power transmitted to the drive case 26 to each planter case 19 (planting portion 21) side is incorporated, and the transmission shaft case 27 is formed. , It is configured so that it can be bolted to the drive case 26 or the planter case 19 side via the connecting flange 30 formed on the end side.

At this time, the flange 30 is supported by a scraping shaft 31 or the like that pivotally supports the arm 32 that operates the vertical swing operation of the seedling mounting table 18 (see FIGS. 2 to 4), and the scraping shaft is supported. The specific support structure of the 31 on the flange 30 side will be described later.

The seedling stand 18 is supported by an apron 24 arranged on the upper rear side of the planter case 19, and the seedling stand 18 is supported by a scraping amount adjusting lever 23 supported on the lateral frame 16 side. By operating the apron 24 in the vertical direction, the apron 24 can be moved up and down. Thereby, the amount of the planting portion 21 scraping the seedlings on the seedling stand 18 at one time can be adjusted. Further, the apron 24 is provided with a notch 24a through which the rotation locus on the tip end 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. The support structure of the scraping amount adjusting lever 23 on the flange 30 side will be described later.

The planting portion 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. By rotating the seedlings, the seedlings placed on the seedling stand 18 can be scraped off, and the scraped seedlings can be planted on the field side.

In the illustrated example, the float 22 has a notch formed in the rear portion so as to pass the rotation locus of the planting portion 21 supported by the lower side of the drive case 26 and supported by the central planter case 19C. The float 22C, the right float 22R arranged directly under the right planter case so that the rotation loci of the planting portions 21 and 21 supported on both side surfaces of the right planter case 19R pass, and the left planter case 19L. The left float 22L arranged directly below the left planter case 19L so that the rotation loci of the planting portions 21 and 21 supported on both side surfaces pass through are supported side by side in the left-right direction.

The front end side of each float 22 is supported so as to be swingable up and down, and the float support arm 33 is connected to the rear side of each float 22 via a rotation shaft. The float support arm 33 is oscillatingly supported by a float shaft 34 in the left-right direction supported on the horizontal frame 16 side (see FIG. 1).

A planting depth adjusting lever 36 is connected to the float shaft 34 so that the float support arm 33 swings up and down in conjunction with the forward / backward swinging operation of the planting depth adjusting lever 36. It is configured. As a result, the float 22 is displaced in the vertical direction by the planting depth adjusting lever 36, so that the planting depth can be adjusted by the planting work machine 6.

At this time, the float shaft 34 and the planting depth adjusting lever 36 are configured to be supported on the flange 30 side. The 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 support structure of the flange will be described with reference to FIGS. 1 to 8. FIG. 6 is a side view of a main part showing a structure for supporting the scraping shaft on the flange side, and FIG. 7 is a side view of the main part showing a structure for supporting the seedling stand support stay on the flange side. FIG. 8 is a side view of a main part showing a structure in which the scraping shaft and the float shaft are supported on the flange side.

The flange 30 is formed by extending the transmission shaft case 27 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, it is for fixing to the drive case 27) side with bolts to form the horizontal frame 16. At this time, the flange 30 is widely extended from the center side of the transmission shaft built in the transmission shaft case 27 toward the outer peripheral side (so that it is on a triangle in the illustrated example), and further upward and upward. By extending rearward, the scraping shaft support portion 41 that supports the scraping shaft 31, the seedling mount support portion 42 that supports the seedling stand support stay 17, and the float shaft 34 are supported. A float support portion 43 is formed (see FIGS. 6 to 8). Hereinafter, a specific description will be given.

The scraping shaft support portion 41 is provided on the rear side of the flange 30, and is formed by denting a part of the flange 30 downward so that the scraping shaft 31 is fitted. Has been done. Further, the scraping shaft 31 rotatably supported 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 is projected rearward and swings the apron 24 up and down is provided so as to rotate integrally with the swing arm (arm) 32 (see FIG. 6).

That is, the scraping shaft 31 is integrally supported with the left and right transmission shaft cases 27 by being rotatably supported by the scraping shaft support portion 41 at the rear of the flange 30, so that the scraping shaft 31 of the scraping shaft 31 Assembling work becomes easy. Further, when the scraping amount adjusting lever 23 is swung in the front-rear direction, the vertical position of the seedling stand 18 is adjusted via the scraping shaft 31 and the swing arm 32. Therefore, the amount of seedlings scraped from the seedling stand 18 by the planting section 21 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). As a result, 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, so that the scraping shaft 31 and the scraping shaft 31 are assembled. 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), a rod-shaped connecting member for integrally connecting and reinforcing the left and right transmission shaft cases 27L and 27R and the central plan case 17C. 35 is erected. Specifically, both ends of the connecting member 35 are mounted and supported on the flange 30 side via connecting plates 38 and 38, and the connecting plate 38 is a flange on the left and right center sides of the left and right transmission shaft cases 27. It is bolted to the fixing hole 38a formed in the lower side of the cutting shaft support portion 41 of No. 30 (see FIGS. 5 and 6).

As a result, 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 portion of the connecting member 35 is bent in a crank shape and is formed on both the left and right ends. Even if the height positions are different, they can be connected to the flanges 30 and 30 of the left and right transmission shaft cases 27L and 27R (see FIG. 5).

The seedling stand support portion 42 is a portion extending above the flange 30, and is provided with a fixing hole 42a to which a support bracket 46 for supporting the seedling stand support stay 17 is bolted. There is. As a result, the seedling stand support stay 17 is configured to be supported on the horizontal frame 16 side via the support bracket 46.

The support bracket 46 has a tubular portion 46a that supports the seedling stand support stay 17 so that the lower end side is inserted, and a seedling mount that extends to the rear side of the tubular portion and is on the upper side of the flange 30. A plate-shaped mounting portion 46b bolted to the fixing hole 42a on the support portion 42 side is provided, and the lower end side of the seedling stand support stay 17 arranged on the front side of the transmission shaft case 27 is supported on the horizontal frame 16 side. Can be done (see FIG. 7).

The float support portion 43 is provided on the lower side of the flange 30 and has front and rear fixing holes 43a to which the float shaft mounting member 47 for mounting and fixing the float shaft 34 is bolted. As a result, the planting depth adjusting lever 36 and the float support arm 33 are configured to be mounted on the horizontal frame 16 side via the float shaft mounting member 47 and the float shaft 34. Hereinafter, a specific description will be given.

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

According to the configuration, by swinging the planting depth adjusting lever 36 back and forth, the rear side of the float 22 swings up and down via the float shaft 34 and the float support arm 33, thereby causing a field scene. Since the vertical position of the float 22 with respect to the horizontal frame 16 can be operated, the planting depth of the seedlings in the planting work by the planting portion 21 can be adjusted.

Further, the bolt fixing hole for mounting the float shaft mounting portion 47 on the flange 30 side is also used as a bolt fixing hole used for mounting and fixing the transmission shaft case 27 on 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, so that the entire planting work machine can be configured more compactly and at low cost.

From the above, in addition to being used to attach and fix the transmission shaft case 27 to the planter case 19 side, the scraping shaft 31, the seedling stand support stay 17, and the float shaft 34 are laterally mounted on the flange 30. Since the function as a member for supporting the frame 16 side is also used, the number of parts can be reduced and the cost can be kept low, and the assembling work of these parts becomes easy.

6 Planting work 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 (frame support)
43 Float support (float shaft support)

Claims (2)

It is a planting work machine that plants seedlings.
A seedling stand (18) that slopes diagonally downward toward the rear,
A planter case (19) in the front-rear direction arranged side by side in the left-right direction on the lower side of the seedling stand (18), and a planter case (19) in the front-rear direction.
A transmission shaft case (27) that transmits power from the engine to each planter case (19),
A planting section (21) provided in the planter case (19) to scrape the seedlings on the seedling stand (18) and plant them in the field.
A scraping shaft (32) that supports an arm (32) that swings the seedling stand (18) up and down in order to adjust the amount of seedlings scraped from the seedling stand (18) by the planting portion (21). 31) and
In the transmission shaft case (27), a connecting flange (30) is 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). The flange (30) has
A float shaft support portion (43) that supports a float shaft (34) that supports a float (22) that swings following a field scene on the lower side of the planting portion (21).
The planting work machine according to claim 1, wherein the support frame (17) for supporting the seedling stand (18) is provided with the frame support portion (42) for supporting the support frame (17).

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