JP4067020B2 - Rice transplanter - Google Patents

Description

  The present invention relates to a rice transplanter provided with a mat-like seedling prevention device on a seedling mount.

Conventionally, the seedbed floating prevention device has been supported on one side fixed to a support shaft extending in the lateral direction on the upper side or the lower side, and at the time of seedling supply, the support shaft side is rotated upward with the support shaft side as a fulcrum. Further, fixing both the upper and lower sides has not been performed because it becomes difficult to supply seedlings (see Patent Documents 1 to 3).
JP-A-55-141112 JP-A-56-81616 JP-A-56-151415

  In the above-mentioned conventional technology, when the nursery bed floats up, the nursery bed floating prevention hook part on the side opposite to the support shaft is at the free end, so that it is deformed by the floating force of the nursery bed and accurate floating prevention cannot be performed. There were drawbacks. In addition, to prevent this deformation, the cocoon must be thickened, and if the cocoon has a large diameter, there is a drawback that the transfer resistance of the seedlings increases.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that the left and right side walls (3), the partition wall (2), and the nursery bed that respectively supply seedlings to the plurality of transplanting devices (7) while reciprocating left and right. In each of the rice transplanters provided with a plurality of seedling lifting prevention devices (17) for preventing the lifting of the plurality of mat-like seedlings (N) placed on the seedling placing table (1) constituted by the base plate (4), The seedling floating prevention device (17) includes an upper shaft (19) provided on the upper end side and a lower shaft (18) provided on the lower end side, and an inclined portion and an outer portion rising inward from both ends of the lower straight portion and the lower straight portion. The upper side of each of the side wall (3) and the partition wall (2) of the right and left ends of the seedling placing table (1), which is constructed by adhering a seedbed floating prevention ridge (20) composed of an upper straight portion facing to each other. A support column (22) and a lower support column (21) are provided, and are opposed to the upper portions of the upper support column (22) and the lower support column (21). Upper and lower shaft locking bodies (24, 23) having notched openings (b, b) are provided, and the seedling floating prevention device (17) is provided in the openings (b, b) of the shaft locking bodies (24, 23). The upper shaft (19) and the lower shaft (18) are detachably mounted by deforming the seedling floating prevention device (17), and the upper and lower shaft locking bodies (24, 23) are opened (b, b). The rice transplanter is characterized in that the interval (M) between the locking portions is wider than the interval (L) between the upper shaft (19) and the lower shaft (18).

  Therefore, since the elasticity is improved by the seedbed floating prevention rod 20 composed of the lower straight portion and the inclined portion rising inward from both ends of the lower straight portion and the upper linear portion outward, the seedbed floating prevention rod 20 By deforming the seedling floating prevention device 17 configured and mounting the upper shaft 19 and the lower shaft 18 in openings (b, b) that are cut away from each other, the seedling floating prevention device 17 can be easily and securely attached. It can be mounted, and with a simple configuration, a plurality of seedling lifting prevention devices 17 can be moved, and it is easy to take out the remaining seedlings when the seedling planting operation is completed. The floating of the mat of the seedling N can be prevented well.

Further, when the remaining seedlings cannot be easily taken out only by moving the seedling floating prevention device 17, for example, when the remaining seedlings are not easily removed, the opening (b, b) of the upper and lower shaft locking bodies 24, 23 is engaged. Since the interval M between the stoppers is wider than the interval L between the upper shaft 19 and the lower shaft 18, the strain of the seedling floating prevention device 17 can be reduced as much as possible when the seedling floating prevention device 17 is removed. Therefore, the seedling floating prevention device 17 can be deformed and easily removed, and the remaining seedling can be easily taken out, so that the work can be efficiently performed.

  Reference numeral 1 denotes a seedling mounting table equipped on the rice transplanter. Although this seedling mounting stand 1 varies in size depending on the number of planting strips of the rice transplanter, the example of four-row planting will be described in the figure. In other words, the seedling mounting table 1 of the four-row planting rice transplanter is divided into left and right partition walls 2 and includes four mat-like seedlings N including left and right side walls 3 and 3, partition walls 2 and 2, and seedbed bottom plate 4. Can be placed. In addition, a seedbed feed belt 5 is stretched by opening the bottom plate to each of the four other bottom plate portions. Generally, the seedling mounting table 1 is made of a synthetic resin.

  The seedling mounting table 1 is disposed on the upper side of the transplanting part transmission case 6 of the rice transplanter, and is inclined so that the side of the planting device 7 is in the lower position, thereby constituting the frame of the rice transplanter. -It is mounted on the side of the support 6 via the supports 8 and 8 so as to be movable left and right. The support 8 on the lower end side is integrally formed with the seedling receiving frame 9, and the side view is L-shaped so as to receive the lower end surface and the back surface of the mat portion of the mat-like seedling N to be placed. It is configured. The seedling receiving frame 9 is provided with a seedling separation port 10 through which a claw 7a of the planting tool of the planting device 7 intervenes from above. In the figure, reference numeral 6a designates a branch transmission case to which a planting device 7 extending from the transmission case 6 and extending rearward is mounted.

  Reference numeral 11 denotes a lateral movement shaft, which is operated by a lateral reciprocation lateral movement mechanism (not shown) in the transplanting part transmission case 6 and protrudes from the left and right sides of the case 6 to move laterally. To do. And this moving shaft 11 and the back side of the said seedling mounting stand 1 are connected through the interlocking rod 12 and the metal fitting 13.

  Therefore, the mat-like seedling N mounted on the seedling mounting table 1 is reciprocated laterally to the left and right with the lower end of the mat being received by the seedling receiving frame 9, and the seedling N is sequentially fed out to the seedling separating port 10. It is. Then, the fed seedlings N are separated one by one by the nail 7a of the planting tool by the planting device 7 and planted in the farm field on the lower side.

  Reference numeral 14 in the figure denotes a link mechanism for attaching a rice transplanter to the traveling vehicle body (not shown) side. Reference numeral 15 denotes a front arm on which the leveling float 16 is mounted.

  In the seedling mounting table 1 configured as described above, a seedling floating prevention device 17 that holds down the upper surface of the seedling mat that prevents the mat of the mat-shaped seedling N from floating or turning up is provided.

  As shown in FIG. 3, the seedling floating prevention device 17 includes a plurality of lower shafts 18 and upper shafts 19 each having a predetermined parallel interval in the vertical direction, and a plurality of U-shaped upper and lower intermediate portions recessed downward. It is in the form of mounting anti-floating rods 20, 20,. In this embodiment, the two mat-like seedlings N are prevented from floating, and the four-row planting type seedling mounting table 1 of the embodiment requires two seedling floating prevention devices 17.

On the other hand, a support mechanism for holding the seedling floating prevention devices 17 and 17 is formed on the seedling mounting table 1 side. In one embodiment, an upper column 22 and a lower column 21 are erected on the upper surface of the partition wall 2 and the upper surfaces of the left and right side walls 3. The shaft locking bodies 24 and 23 having the openings (b) and (b) into which 18 are inserted are attached. The distance M between the upper and lower shaft locking bodies 24 and the shaft locking body 23 is slightly larger than the distance L between the upper shaft 19 and the lower shaft 18, so that the shaft locking body 23 and the shaft locking body 24 are arranged. When the lower shaft 18 and the upper shaft 19 are engaged and installed in the openings (A) and (B), the anti-levitation rods 20, 20... Let Therefore, the seedling floating prevention device 17 is stably held without rattling, and the whole seedling floating prevention device 17 can be easily attached and detached. The shaft locking bodies 23 and 24 are made of a resin material, and the openings (A) and (B) are fitted while deforming the bay-shaped entrance part slightly smaller than the diameter of the shafts 18 and 19. If configured in this way, it will be prevented from falling out.

  According to the configuration of the above example, the seedling floating prevention device 17 can be removed from the seedling mounting table 1 very easily, and the remaining seedling at the time of completion of the rice planting operation can be easily taken out. The floating of the mat of the mat-like seedling N can be reliably prevented.

  If another embodiment of the present invention is described in detail, as shown in FIG. 5, if at least one side of the upper column 22 and the lower column 21 can be elastically deformed, the seedling floating prevention device 17 is elastically deformed and detached. Even if not, it is possible to cope with the column side deformation.

  Further, as shown in FIG. 6, when the openings (b) and (b) of the shaft locking body 23 and the shaft locking body 24 are directed to the opposite side, the support columns 21 and 22 are elastically deformed, or FIG. Thus, it is preferable to deform and engage the connecting arm portion between the levitating prevention rod 20 and the shaft 18 or the shaft 19.

  Further, as shown in FIG. 8, when the shaft locking bodies 23 and 24 are provided so as to be configured in a plurality of stages above and below the support columns 21 and 22 so as not to perform the function of preventing the floating, the seedling mounting table 1 is provided. This is convenient when seedlings are supplied from behind.

  Further, as shown in FIG. 9, when the lower shaft locking body 23 is adjusted up and down, the shaft portion can also serve as a resistance rod for the stalk, and the stalk a as shown in FIG. Can be held toward the opposite side and can be adjusted to suit the seedling height.

Side view of the main part Plan view of main parts Slope view of the main part Slope view of the main part Side view of the main part of another example Side view of the main part of another example Side view of the main part of another example Side view of the main part of another example Side view of the main part of another example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Seedling mounting base, 2 ... Partition wall, 3 ... Side wall, 4 ... Seedling bed bottom plate, 7 ... Transplanting device, 17 ... Seedling floating prevention device, 18 ... Lower shaft, 19 ... Upper shaft, 20 ... Seedling bed floating prevention rod, 21 ... Lower column, 22 ... Upper column, 23 ... Shaft locking body, 24 ... Shaft locking body, (A) ... Opening, (B) ... Opening, L ... Distance between upper shaft and lower shaft, M ... Interval between the locking parts of the openings of the upper and lower shaft locking bodies, N ... mat seedling

Claims (1)

A seedling mounting table (1) composed of left and right side walls (3), a partition wall (2), and a seedbed bottom plate (4) for supplying seedlings to a plurality of transplanting devices (7) while reciprocating left and right. In a rice transplanter provided with a plurality of seedling floating prevention devices (17) for preventing the plurality of mat-like seedlings (N) placed thereon, each seedling floating prevention device (17) is provided with an upper shaft (19 ) And a lower shaft (18) provided at the lower end side, a seed bed floating prevention rod (20) composed of a lower straight portion, an inclined portion rising inward from both ends of the lower straight portion and an upper straight portion facing outward is fixed. The upper support strut (22) and the lower support strut (21) are provided on the left and right side walls (3) and the partition walls (2), respectively. (22) and upper and lower shaft locking bodies having openings (b, b) cut out in opposition to the upper part of the lower support column (21) ( 4 and 23), and the upper shaft (19) and the lower shaft (18) of the seedling floating prevention device (17) are inserted into the opening (b, b) of the shaft locking body (24, 23). 17) is deformed and detachably mounted, and the distance (M) between the locking portions of the openings (b, b ) of the upper and lower shaft locking bodies (24, 23) is set to the upper shaft (19) and the lower shaft. A rice transplanter characterized in that it is configured wider than the interval (L ) with (18).

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