JPH0638416U - Transplanter seedling delivery device - Google Patents

Abstract

(57) [Summary] [Purpose] After cutting the band-shaped seedlings into predetermined number of planted seedlings,
In a transplanter to be planted in a field, a lock phenomenon due to stone trapping of the left and right star wheels that sends the conveyed band-shaped seedlings toward the cutting device C is eliminated. [Structure] A pair of left and right star wheels 49, 50 provided at the terminal end of the transfer device A are arranged so that their tip loci k, k'are close to or overlap each other in a plan view, and an interval H is set in the stem direction of the band-shaped seedling. It is provided so as to be opposed to each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transplanter for transferring a band-shaped seedling by a carrying device, cutting it into a predetermined number of planted seedlings by a cutting device, and planting it in a field.

[0002]

[Prior art]

 In advance, the seedlings of strawberries or other seedlings are continuously attached to tape, knitted in a thread form so as not to separate, or simply pressed to spread the seedlings flat. As a result, a method of forming a band-shaped seedling suitable for mechanical planting and planting a seedling in the field using this band-shaped seedling has been studied. As a transplanter used for this planting, a belt-shaped seedling is transferred by a transporting device, cut into a predetermined number of planted seedlings at the end of this transporting device, and then planted in a field with nails for planting. Has been developed by the applicant. Further, a device in which a pair of left and right seedling feeding bodies for feeding the band-shaped seedlings to the cutting device is provided at the terminal end of the above-mentioned transporting device is also proposed in Japanese Utility Model Application Laid-Open No. 4-68616 published by the present applicant.

[0003]

[Problems to be solved by the device]

 The seedling delivery body provided at the terminal portion of the above-mentioned transporting device is effective in reliably sending out the band-shaped seedlings transported by the transporting device toward the cutting device for each planting unit. However, since the paired right and left seedling delivery bodies face the strip-shaped seedlings transferred in the standing posture at the same height on the left and right sides, the seedling delivery body does not collect pebbles S and the like mixed in the strip-shaped seedlings. When it is bitten, as shown in FIG. 6, small stones S 2 and the like are sandwiched between the left and right seedling delivery bodies, and the seedling delivery body is locked and cannot rotate. In particular, this phenomenon is likely to occur in the seedling feeders located below the roots of the band-shaped seedlings, and if the feeders lock up, the belt-shaped seedlings will not be sent out, resulting in seedling blockages and plant stunting during planting. To do. Therefore, it is conceivable to make the diameter of the left and right seedling feeding bodies small so that even if there is a small stone S etc., it will pass through the gap between them, but in that case, conversely, for each unit of planting banded seedlings. There is a problem that the seedling feeding action becomes uncertain and smooth planting is not possible.

[0004]

[Means for Solving the Problems]

 According to the present invention, a pair of left and right star wheels provided at the end of the carrier device are arranged so that their tip loci are close to or overlap each other in plan view, and are opposed to each other in the stem direction of the band-shaped seedlings with a space therebetween. The above-mentioned problem is solved by a very simple modification that is provided as described above.

[0005]

[Action]

 The band-shaped seedlings transferred by the transfer device are scraped by the pair of left and right star wheels at the end of the transfer device for each planting unit, and sent out to the cutting device. Then, the belt-shaped seedlings sent out are cut into a predetermined number of planted seedlings by a cutting device, and are planted in a field by planting claws. In this case, the pair of left and right star wheels make their tip loci close to each other or overlap each other in plan view, so that the stems of the band-shaped seedlings are surely scraped from the left and right. Since the left and right star wheels are provided facing each other at intervals in the stem direction of the band-shaped seedling, even if small stones S, etc. are mixed in the band-shaped seedling, the pebble S, etc. are positioned in the stem direction. Pushed from the displaced star wheel or passing through the gap without difficulty, the left and right star wheels do not bite the pebbles at the same time and become locked, and the band seedlings are always delivered smoothly.

[0006]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the strawberry planting machine 1 is mounted on a rear portion of a traveling machine body 2 which constitutes a towing vehicle, and is vertically movable via a link mechanism 3. It is installed. Further, in the transplanter 1, power is transmitted from an engine (not shown) mounted on the front part of the traveling machine body 2 through the PTO shaft. In addition, the traveling machine body 2 includes steering wheels 4 and drive wheels 5, and a support frame 7 on which a seedling box 6 is placed is installed in the front portion. An auxiliary seat 9 and a step 10 are provided at the rear of the driver's seat 8, and an auxiliary worker pulls out the seedling box 6 containing the band-shaped seedlings from the support frame 7 and moves to the transplanter 1 while moving on the step 10. Replenish. The band-shaped seedlings used in the transplanter 1 are formed by attaching tapes T to both sides of the strawberries seedlings N as shown in FIG. 7 and winding the filaments I on the tapes T to form continuous tape seedlings. On the other hand, the transplanter 1 is configured as a multi-row plant and includes a machine frame 11 that is connected to the link mechanism 3 described above. Further, the machine frame 11 fixes a seedling carrying frame 12, a planting transmission case 13, a gear case 14 for transmitting power to the seedling carrying device A, and the like. In addition, on the rear surface of the upper part of the seedling carrier frame 12, the seedling box support frame 15 on which the seedling boxes 6 are placed and the upper part of each seedling box are covered so that the strip-shaped seedlings in the left and right seedling boxes do not come out and interfere with each other. A partition plate 16 is provided. In addition, above this, there is a handrail 17 for an auxiliary worker whose base is attached to the seedling transport frame 12 so that its rotation is adjustable.

Further, the detailed structure of the transplanter 1 will be described with reference to FIG. 2. The seedling transfer device A of the transplanter 1 includes a first transfer section 18 and a second transfer section 19. The first carrying section 18 includes a stem tip belt 20 on which the stem tip side of the band-shaped seedling is placed and transferred, and stock root belts 21 and 22 for nipping and transferring the stock roots from above and below. The belt 20 and the lower stock belt 21 are wound around drive pulleys 23, 23 provided below and idle pulleys 24, 24 provided above. The upper stock belt 22 is wound around the drive pulley 25 and the idle pulley 26. The drive pulleys 23 and 25 are fixed on drive shafts 27 and 28 that rotate in opposite directions, and the drive shafts 27 and 28 are chain-transmitted from the gear case 14 described above. The floating pulley 26 of the upper stock belt 22 is rotatably supported by a belt frame 29, and the belt frame 29 is rotatable about a drive shaft 28. Therefore, when the grip 29a fixed to the frame 29 is lifted and the locking metal fitting 12a fixed to the seedling carrying frame 12 is disengaged from the locking pin 29b fixed to the frame 29, the upper stock belt 22 is Rotate upward together with the frame 29 to facilitate the replenishment / setting work of band-shaped seedlings at the start of work or at the time of seedling splicing.

On the other hand, the second transfer section 19 inherits the belt-shaped seedlings in the sideways posture transferred from the first transfer section 18, and further changes the posture by 90 degrees so that the seedling feeding device B provided below stands upright. hand over. Therefore, the second transport unit 19 includes a lower belt 30 and an upper belt 31 that sandwich the intermediate portion of the band-shaped seedlings transferred from the first transport unit 18, and each belt 30, 31 has a drive shaft 27, It is wound around drive pulleys 32 and 33 fixed to 28 and pulleys 36 and 37 (see FIG. 3) provided on driven shafts 34 and 35 orthogonal to the drive shafts 27 and 28. Further, the lower belt 30 and the upper belt 31 are provided with flanged tension pulleys 38, 39, 40 and 41, respectively, and even if the upper and lower belts 30 and 31 are twisted by 90 degrees, the belt 30, It is arranged so that 31 does not come off.

Further, as shown in FIG. 3, the seedling feeding device B is provided at the end portions of the conveyor belts 30 and 31, and the belt-shaped seedlings that are changed to the standing posture by the conveyor belts 30 and 31 are used as a cutting device C that follows. Play a role in sending to. Therefore, the seedling feeding device B includes a guide plate 42 that guides the root of the band-shaped seedling to the feeding passage R, and guide rods 43, 44, 45 that are made of spring material and that can open the lower side of the passage. , 46, upper and lower star wheels 47, 48, 49, 50 forming a left-right pair, and central guide rods 51, 52 forming a V-shaped seedling reservoir P in the central portion. The guide plate 42 is fixed on the guide plate 12b attached to the transfer frame 12, and the guide rods 43, 44, 45, 46, 51 and 52 are brackets for supporting the driven shafts 34 and 35 of the transfer belt, respectively. It is attached to 53 and 54. The star wheels 47, 48, 49, 50 described above are directly fixed to the driven shafts 34, 35 of the conveyor belts 30, 31, and when the conveyor belts 30, 31 are driven to rotate the driven shafts 34, 35. , The star wheels 47, 48, 49, 50 also rotate at the same time. Gears 55 and 56 are provided above the driven shafts 34 and 35 so that the gears 55 and 56 can move to the left and right driven shafts 34 even if there is a difference in peripheral speed between the left and right conveyor belts 30 and 31. , 35 are synchronously rotated. Further, an L-shaped cover plate 57 is provided in front of the gears 55 and 56, and the cover plate 57 guides the stem tip downward so that the stem tip of the band-shaped seedling is not bitten by the gears 55 and 56.

As shown in FIG. 6, the star wheels 47, 48, 49, 50 are provided with star-shaped projections a on the periphery thereof, and the troughs b between the projections scratch the stems of the band-shaped seedlings for each transplant unit. Stuff. Further, the loci k and k'of the projections a are provided so close to each other that they do not contact each other. The rotation phases of the protrusions a may be shifted from each other as shown in FIG. 6, and the loci k and k ′ of their tips may be arranged closer to each other than the position shown in the drawing so that they overlap in a plan view. . Further, as shown in FIG. 4, the star-tip star wheels 47, 48 provided on the upper side are at the same height in the rear view, but the paired star wheels 49, 50 provided on the lower side are driven shafts. It is fixed to the lower ends of 34 and 35 with a vertical interval H. Reference numerals 58 and 59 are left and right stoppers for the lower guide rods 45 and 46, and prevent the guide rods 45 and 46 from being biased to the left and right.

Then, the band-shaped seedlings sent out from the seedling sending-out device B are cut by a cutting device C provided below the seedling sending-out device B as shown in FIGS. 3 to 5. The cutting device C comprises a cutting blade 60 and receiving blades 61 and 62. The cutting blade 60 and the receiving blades 61 and 62 are oriented in left and right opposite directions with respect to a lower fulcrum 63 and 64 by a cam mechanism (not shown). Opening and closing movements are performed in synchronization with, and the tape part attached to the band-shaped seedlings is cut into individual planting units. The cut planting seedlings are sandwiched by the upper and lower guide rods 43, 44, 45 and 46, and are temporarily supported by the central guide rods 51 and 52 and temporarily stay there. Further, the planting device D provided at the rear portion is provided with a planting rod 65 that cranks as shown in FIG. 5, and a planting beak 66 attached to the tip of the planting rod 65 and a pushing hawk 67 are provided. The claw 68 captures and scrapes off the seedlings of the seedlings temporarily retained by the guide portions 43, 44, 45, 46, 51, 52 described above, and carries out the planting operation toward the field. The planting guide 69, which is formed in an arc shape along the descending locus of the planting claw 68, and the elastic guide plate 70 attached to the lower end of the planting claw 68 prevent the seedlings from falling during the planting and prevent planting. Correct your posture.

Since the present embodiment is configured as described above, each part of the transplanter 1 is driven as the traveling machine body 2 travels, and the band-shaped seedlings pulled out from the seedling box 6 on the seedling box support frame 15 are removed. , And transferred to the seedling feeding device B by the seedling conveying device A. In addition, the band-shaped seedlings transferred by the seedling transfer device A are transferred in a horizontal posture in the first transfer part 18, and when they reach the second transfer part 18, the posture is sequentially changed to the standing position and transferred to the seedling delivery device B. . When the belt-shaped seedlings whose postures have been changed to the standing posture reach the end of conveyance, the roots of the seedlings are guided by the guide plate 42 to be guided to the feeding passage R, and the star wheels 47, 48 facing vertically and horizontally. , 49, 50 enter the stem tip of the band-shaped seedling and the root of the plant from the left and right, separate from the subsequent band-shaped seedlings into a predetermined number of planted seedlings that are a planting unit, and send out to the cutting device C.

At this time, the lower star wheels 49 and 50 rotate in the opposite directions with a vertical interval H in the stem direction of the standing strip seedlings. Therefore, even if the pebbles S and the like are mixed in the band-shaped seedlings, the pebbles S and the like are excluded from the rotation trajectories k and k'by the projections a of the star wheels 49 and 50, respectively. Alternatively, it passes without difficulty between the upper and lower gaps H of the left and right star wheels 49, 50. Therefore, like a pair of star wheels having the same height in the vertical direction, pebbles S and the like are caught between the protrusions a of both star wheels 49, 50, and the star wheels 49, 50 The problem of locking the seedlings and making the transfer of banded seedlings impossible is generally solved. It should be noted that the upper star wheels 47, 48 do not have pebbles S or the like because they scrape the stem tips of the band-shaped seedlings, and may be configured to have the same height in the vertical direction. However, when there is a possibility that pebbles S and the like may also be mixed on the tip side of the stem during the tape seedling production stage or during transportation, as in the case of the star wheels 49 and 50 on the lower side, an interval H is vertically provided in the stem direction. They may be staggered and provided to face each other.

Further, the strip-shaped seedlings sent from the seedling feeding device B are cut at the tape sticking portion by the cutting device C provided below, and the cut planting seedlings of the planting device D provided at the rear part are cut. It is planted in the field by the planting claw 68. In addition, during this transplanting operation, the assistant worker monitors the planting condition at any time, and when the band-shaped seedlings in the seedling box 6 are exhausted, the assistant worker moves to the front part of the traveling machine body 2 and takes out the auxiliary seedling box 6, and the transplanter 1 It is set on the upper seedling box support frame 15. Then, the upper transfer belt 22 of the seedling transfer device A is opened to perform seedling splicing, and continuous and smooth planting work is performed.

[0015]

[Effect of device]

 According to the present invention, the pair of left and right star wheels 47, ... of the seedling feeding device B are provided so that their tip loci k, k ′ are close to each other or overlap each other in a plan view. The right and left star wheels 47 can be surely scraped, and can be smoothly sent to the cutting device C without being clogged. Moreover, since the star wheels 49, 50 on the left and right of the stock plant are provided so as to face each other with a gap H in the stalk direction of the band-shaped seedlings, the pebbles S and the like may be mixed in the band-shaped seedlings. Also, the pebbles S, etc. are pushed out of the loci of rotation k, k ′ by the two star wheels 49, 50 that are displaced in the stem direction, or pass through the gap without difficulty, and the left and right star wheels simultaneously move the pebbles S, etc. There is no problem of biting into the locked state, and the band-shaped seedlings can be sent out smoothly at all times for efficient planting work.

[Brief description of drawings]

FIG. 1 is an overall side view of a transplanter.

FIG. 2 is a perspective view of a seedling carrier device.

FIG. 3 is a perspective view of a seedling feeding device.

FIG. 4 is a rear view of the seedling feeding device.

FIG. 5 is a side view of the seedling feeding device.

FIG. 6 is a plan view of a star wheel.

FIG. 7 is a perspective view showing a state in which tape seedlings are stored in a seedling box in a zigzag shape.

[Explanation of symbols]

 A carrier device B feed device C cutting device D planting device K tip locus of protrusion a H interval 47, 48, 49, 50 star wheel 68 planting claw

Front page continuation (72) Inventor Tetsuo Shibata 667 Isuya-cho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. Agricultural machinery Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A transplanter for cutting a band-shaped seedling transferred by a carrier device into a predetermined number of planted seedlings and then planting the seedlings in a field with a planting claw, by directing the end of the carrier device toward the cutting device. Providing a pair of left and right star wheels that send out the band-shaped seedlings, the left and right star wheels are arranged to face each other at a distance in the stem direction of the band-shaped seedlings, while making their tip loci close to each other or overlapping in a plan view. A seedling feeding device for a transplanter characterized by being provided.