JP2014121275A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of simply storing an extended seedling loading table even when an extended seedling loading table is provided on right and left outsides of an ordinary seedling loading table.SOLUTION: A seedling loading table 51 for loading a plurality of seedlings and a seedling planting device 52 are disposed in the rear part of a traveling vehicle body 2, a rotatable extended seedling loading table 51' is provided on the outer end part of the seedling loading table 51, an auxiliary work device 63 for spraying a fertilizer and a chemical is provided on the rear lower part of the seedling loading table 51, and the seedling loading table 51 is provided with turning shafts 66a, 67a for moving the extended seedling loading table 51' between the storing position and the deployment position. In this seedling transplanter, the turning shafts 66a, 67a are disposed at such a position that the extended seedling loading table 51' is movable along such a locus that the extended seedling loading table 51' does not interfere with the auxiliary work device 63 when the extended seedling loading table 51' is turned on the seedling loading table 51 to be stored. When the extended seedling loading table 51' is once moved to the storing position, it does not return to the working position, so that the extended seedling loading table 51' can be prevented from sticking out of transport means such as a truck and coming into contact with the wall of a stockroom and peripheral articles to be broken.

Description

  The present invention relates to a seedling transplanting machine including a seedling planting unit having a seedling mounting table at a rear part of a machine body having a traveling device.

  In the case where the seedling transplanting machines of Patent Documents 1 and 2 are provided with an extended seedling mounting table rotatably at least on one side of the left and right sides of the seedling mounting table for six lines, The extended seedling mounting table is moved to the side of the seedling mounting table to be in a use state, and at the end of the operation, the extended seedling mounting table is moved to a position away from the seedling mounting table to a storage state, At the time of transport and storage, the lateral width is substantially the same as that of the seedling transplanter for 6-line work, so that the members can be prevented from protruding from the loading platform of a small truck and the space for the storage can be saved.

  Moreover, the seedling transplanting machine of Patent Document 3 is provided with two extended seedling placement tables that can be folded on both the left and right sides of the four seedling placement tables. Thereby, when the extended seedling mounting table is folded, the left-right width of the machine body can be greatly suppressed.

JP 2002-084840 A JP 2010-220495 A JP-A-2005-278421

  In the seedling transplanting machines of Patent Documents 1 and 2, the pivot shaft serving as the pivot point of the extended seedling mounting table is provided along the vertical direction of the seedling mounting surface of the seedling mounting table. When moved to the storage position, the distance between the upper end portion of the rotation shaft and the seedling placement surface and the distance between the lower end portion of the rotation shaft and the seedling placement surface are substantially the same. The size of the space formed below the seedling mounting table is reduced.

  There is no problem even with the above configuration as long as it is a normal seedling planting operation and a fertilization operation for supplying fertilizer to a seedling planted from a fertilizer application apparatus. However, depending on the working conditions, an auxiliary work device that sprays additional fertilizer (fertilizer with a component different from the fertilizer of the fertilizer fertilizer or slow-acting fertilizer) and chemicals (herbicide, insect repellent, etc.) is attached to the rear of the seedling mount. In the case where the extended seedling mounting table is rotated to the storage state, the lower side of the extended seedling mounting table interferes with the auxiliary work device.

  For this reason, it is necessary to remove the auxiliary work device before putting the extended seedling mounting table into the stowed state, but this auxiliary work device is long and heavy in the left-right direction, and it takes a lot of time and labor to remove it. There is a problem of spending on.

  In addition, when the extended seedling mounting table is rotated to a position where it can be rotated, it may fit within the width of the loading platform such as a truck. In this state, the extended seedling mounting table is used when traveling on a truck or the like. Since it can be freely rotated by vibration, etc., the extended seedling mounting table moves to the seedling planting work position during transfer. In such a case, it is necessary to refold the extended seedling mounting table during the transfer. There is a problem that extra time is consumed.

  In addition, in the seedling transplanting machine of Patent Document 3, when folding the extended seedling placing table, it is necessary to rotate the seedling placing table for two strips of the folded portion in a direction to push up at least partway. There is a problem that a considerable amount of labor must be spent during the folding work.

  Accordingly, an object of the present invention is to provide a seedling transplanting machine that can easily store an extended seedling mounting table even if the extended seedling mounting table is provided on the left and right outer sides of a normal seedling mounting table.

The object of the present invention is achieved by the following configuration.
According to the first aspect of the present invention, a traveling vehicle body (2) that travels on a farm field with left and right front wheels (10) and rear wheels (11) is provided, and a lifting link mechanism (3) and a lifting / lowering mechanism are provided at the rear of the traveling vehicle body (2). A seedling placement table (51) for loading a plurality of seedlings is arranged at the rear of the link mechanism (3), and a seedling planting device (52) for taking seedlings and planting them in the field is provided below the seedling placement platform (51). An auxiliary work device (additional fertilizer, additional fertilizer, spraying fertilizer and medicine on the rear lower part of the seedling placement table (51) is provided on the outer end of the seedling placement table (51). In a seedling transplanter provided with a herbicide spraying device etc.) (63)
Rotating shafts (66a, 67a) for moving the extended seedling mounting table (51 ′) to the storage position and the unfolding position are provided on the seedling mounting table (51), and the rotating shafts (66a, 67a) are extended seedlings. When the mounting table (51 ′) is rotated onto the seedling mounting table (51) to be stored, the extended seedling mounting table (51 ′) can move to a position that does not interfere with the auxiliary work device (63). This is a seedling transplanter characterized by being arranged.

  According to the second aspect of the present invention, the outer end portion of the seedling placement table (51) and the outer end portion of the extended seedling placement table (51 ′) are connected to form a connecting portion, and a connecting member ( The connecting fence (66) is provided, and the rotating shaft (66a) of the extended seedling mounting base (51 ') is provided at one end of the connecting members (66). The rotating shaft (66a) The seedling transplanting machine according to claim 1, wherein the lower side of (2) has an inclined posture that is separated from the seedling placement surface of the seedling placement stand (51).

  According to a third aspect of the present invention, a support plate (67) that is long in the vertical direction is provided outside the upper end portion of the extended seedling mounting base (51 '), and a rotating shaft (67a) is provided on the support plate (67). (67) is attached in a direction perpendicular to the plane, and the extended seedling mounting table (51 ′) is configured to be rotatable clockwise or counterclockwise about the rotation axis (67a), and stored at the time of storage. The seedling transplanting machine according to claim 1, wherein the extended seedling placing table (51 ') is configured to be received by upper end portions of the plurality of seedling placing tables (51) (the seedling guide guide 51c is removed). It is.

  In the invention according to claim 4, the seedling is guided to the seedling placement table (51) and the extended seedling placement table (51 ') on the upper end portion of the seedling placement table (51) and the upper end portion of the extension seedling placement table (51'). The seedling guide guides (51c, 51′c) for rotating the seedlings are configured to be pivotable to the front side or the rear side of the seedling mounting base (51, 51 ′), respectively. The seedling transplanter according to the item.

  In the invention according to claim 5, the extended seedling mounting table (51 ′) is provided on one side of the outer end of the seedling mounting table (51), or both outer ends of the seedling mounting table (51). One seedling transplanter according to any one of claims 1 to 4, wherein one is provided in each part.

  According to the first aspect of the present invention, when the extended seedling mounting table (51 ′) is stored, the extended seedling mounting table (51 ′) can be placed on the seedling mounting table (51) without interfering with the auxiliary work device (63). Therefore, it is not necessary to remove the auxiliary work device (63) when storing the extended seedling placing table (51 ′), and the work efficiency is improved as compared with the prior art.

  Since the extended seedling placement table (51 ′) and the auxiliary work device (63) do not interfere with each other, the seedling transplanter is transported by, for example, a truck in a state where the extended seedling placement table (51 ′) has not moved to the storage position. Or being stored in a warehouse. Once the extended seedling placement table (51 ′) is moved to the storage position, the extended seedling placement table (51 ′) does not return to the working position, and the extended seedling placement table (51 ′) protrudes from the transporting means such as a truck. ') Is prevented from being damaged by contact with warehouse walls and surrounding items.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the rotating shaft (66a) of the extended seedling mounting base (51 ′) is placed closer to the lower side of the traveling vehicle body (2). When the extended seedling mounting table (51 ′) is rotated onto the seedling mounting table (51) by adopting an inclined posture separated from the mounting table (51), the upper end portion of the rotating shaft (66a) and the seedling mounting table Since the distance between the lower end portion of the rotation shaft (66a) and the seedling placement surface of the seedling placement table (51) can be made larger than the distance of the seedling placement surface of (51), the extended seedling placement in the storage state A space portion into which the auxiliary working device (63) enters is formed below the placing table (51 ′), and the extended seedling placing table (51 ′) can be folded without removing the auxiliary working device (63).

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1, by providing the rotating shaft (67a) on the support plate (67), the extended seedling mounting table (51 ') is formed as a seedling. Since it can be set in the storage state in a posture substantially orthogonal to the mounting table (51), it is not necessary to provide a receiving table on the side of the seedling mounting table (51) for receiving and supporting the extended seedling mounting table (51 ′). It can be set as a simple structure. Further, the extended seedling placement table (51 ′) is placed in a storage state in a posture substantially orthogonal to the seedling placement table (51), so that the extended seedling placement table (51 ′) can be rotated even if vibration is applied during transportation. ) Can be prevented from returning to the working position, so that the extended seedling mounting base (51 ') protrudes from the transport means such as a rack, or the extended seedling mounting base (51') comes into contact with the wall and surrounding articles. Damage is prevented.

  According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the seedling guide (51c, 51′c) is used as the seedling mounting table (51, 51 ′). When the extended seedling mounting table (51 ') is stored on the seedling mounting table (51) side, the seedling guides (51c, 51'c) are rotated forward or rearward. When moved, the seedling guides (51c, 51′c) do not interfere with the seedling placement table (51) and the extended seedling placement table (51), so that the man-hour for storing the extended seedling placement table (51 ′) is reduced. It becomes smaller and the work efficiency is improved than before.

  According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1 to 4, the extended seedling mounting table (51 ′) is an outer end portion of the seedling mounting table (51). On the other hand, by providing only one, it is possible to reduce the force required by the operator when rotating the extended seedling mounting table (51 ′), and thus the labor of the operator is reduced. Further, even when the extended seedling mounting bases (51 ′) are provided at both outer end portions of the seedling mounting base (51), the force required by the operator is small because the construction is such that the individual seedling mounting bases (51 ′) are folded one by one. It is reduced.

It is a side view of the riding type rice transplanter of one embodiment of the present invention. It is a top view of the riding type rice transplanter of FIG. The structure of the connection fence (FIG. 3 (a)) between the extended seedling mounting stand of the embodiment of the riding type rice transplanter of FIG. 1 and the seedling mounting base inside thereof, the conventional extended seedling mounting base and the seedlings inside thereof It is a side view of the seedling mounting base part explaining the structure (FIG.3 (b)) of the connection fence between mounting bases. It is a rear view of the seedling mounting stand of one Example of the riding type rice transplanter of FIG. It is a perspective view of the seedling mounting stand of one Example of the riding type rice transplanter of FIG. It is a side view of the seedling mounting stand of one Example of the riding type rice transplanter of FIG. It is a block diagram of the vibration apparatus of the seedling mounting stand of one Example of the riding type rice transplanter of FIG. The main part perspective view (FIG. 8 (a)) of the front board of one Example of the riding type rice transplanter of FIG. 1 and the top view which shows the shape of the hole formed in the sliding surface of the seedling mounting base of a front board (FIG. 8). (B)). It is a principal part bottom view of the float of one Example of the riding type rice transplanter of FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 are a side view and a plan view of an eight-row riding type rice transplanter equipped with a fertilizer application device as a granular material feeding device, which is a typical example of the seedling transplanter of the present invention. In this riding type rice transplanter 1 with a fertilizer application, a seedling planting part 4 is mounted on the rear side of the traveling vehicle body 2 via a lifting link mechanism 3 so that the seedling planting part 4 can be raised and lowered. Is provided. The boarding operator refers to the left and right directions in the forward direction of the riding type rice transplanter as left and right, respectively, and the forward direction and the reverse direction are referred to as forward and backward, respectively.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a mission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10 and 10 are respectively attached. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel rolling shaft (not shown) provided horizontally in the front and rear at the center of the rear end of the main frame 15 is used as a fulcrum. The rear wheel gear cases 18 and 18 are supported in a freely rolling manner, and the rear wheels 11 and 11 are attached to a rear wheel axle that protrudes outward from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via a belt transmission device 21 and a hydraulic continuously variable transmission (HST) 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear portion of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 by the planting transmission shaft 26, and also the fertilizer application device 5 by the fertilization transmission mechanism 28. Is transmitted to.

  The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end. The floor step 35 is partly grid-shaped (see FIG. 2), and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

  The elevating link mechanism 3 is a parallel link mechanism, and includes a single upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the front end side thereof. ing. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44.

  An elevating hydraulic cylinder 46 is provided between a support member (not shown) fixed to the main frame 15 and the tip of a swing arm (not shown) formed integrally with the upper link 40. By expanding and contracting with hydraulic pressure, the upper link 40 is rotated up and down, and the seedling planting portion 4 is lifted and lowered with a substantially constant posture.

  The seedling planting section 4 has an eight-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and a left and right reciprocating motion to feed the seedlings one by one to the seedling outlets 51a, ... When all the seedlings for one line are supplied to the seedling outlet 51a, ..., the seedling placement base 51 for transferring the seedling downward by the seedling feeding belt 51b, ..., seedling planting for planting the seedling supplied to the seedling outlet 51a, ... Attached portion 52,... Includes a pair of left and right drawing markers 22 (FIG. 1) for drawing the aircraft course in the next stroke to the topsoil surface.

  The fertilizer application device 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a certain amount by the feeding portions 61,..., And applies the fertilizer to the left and right sides of the float 55 with the fertilizer hose 62,. To the fertilization groove formed in the vicinity of the side portion of the seedling planting line by the groove-growing body 24 (FIG. 1) provided on the front side of the fertilization guide. Air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hose 62 through the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hose 62 is forced by the wind pressure. The additional fertilizer can be applied to the field from the additional fertilizer 63 while being conveyed. The herbicide spraying device 63 is supported on the transmission case 50. If the fertilizer application 5 is replaced with a herbicide spraying device 63, the additional fertilizer application 63 can also be used as a herbicide spraying device.

  The seedling planting unit 4 is provided with a leveling rotor 27 which is an example of a leveling device. The leveling rotor 27 is a combination of a center leveling rotor (sometimes referred to as a center rotor) 27b and a pair of side leveling rotors (sometimes referred to as side rotors) 27a and 27a disposed on the rear outside of the center rotor 27b. .

  In addition, the seedling mounting table 51 is configured to slide the both side members 65b in the left-right direction using the support roller 65a of the rectangular support frame 65 that is full in the left-right direction and the vertical direction that supports the entire seedling planting unit 4 as a rail. It is.

  Furthermore, on the left and right sides of the front part of the traveling vehicle body 2, a pair of spare seedling mounting tables 38, 38 on which replenishment seedlings are placed can be pivoted to a position where they protrude from the front and back of the machine body and a position where they are aligned vertically. Is provided.

FIG. 1 shows a side view when the first preliminary seedling mounting table 38a, the second preliminary seedling mounting table 38b, and the third preliminary seedling mounting table 38c on one side of the machine body are arranged in three upper and lower stages.
The preliminary seedling mounting table 38 is supported by a support machine frame 49 having a base side disposed below the floor step 35 of the traveling vehicle body 2, and is configured in three upper and lower stages via moving link members 39a, 39b, and 39c, respectively. It comprises a preliminary seedling placement table 38a, a second preliminary seedling placement table 38b, and a third preliminary seedling placement table 38c.

  When the moving link member 39b is rotated by the operation of the switching drive device (electric motor) 70 provided on the airframe, the preliminary seedling placement bases 38a, 38b, 38c connected to the moving link member 39b are rotated, and The seedling placement bases 38a, 38b, and 38c can be switched between a three-stage stacked state shown in FIG. 1 and a deployed state in which the preliminary seedling placement bases 38a, 38b, and 38c are deployed on substantially the same plane. The preliminary seedling placement bases 38a, 38b, 38c are rotated to provide a changeover switch 19 (which may be a button or a lever) (FIGS. 1 and 2) in the vicinity of the seat 31 as a switching operation means between a deployed state and a stacked state.

  Further, when the partial strip clutch lever 17 is operated, the partial strip clutch (not shown) for turning on and off the driving force to the predetermined planting device 52 of the planting clutch mechanism is “disengaged” to operate the corresponding strips. The planting device 52 is turned on and off.

  The seedling mounting table 51 of the present embodiment is a wide seedling mounting table 51 for eight-row planting, but the seedlings corresponding to the planting claws 52a and 52a of the pair of seedling planting devices 52 and 52 at both ends. The mounting tables will be referred to as extended seedling mounting tables 51 ′ and 51 ′, respectively.

  FIG. 3B shows a conventional circuit board provided on the upper side of the connecting fence 66 between the pair of extended seedling mounting tables 51 ′ and 51 ′ on the both side ends and the adjacent inner seedling mounting tables 51 and 51. The extended seedling mounting bases 51 ′ and 51 ′ are folded to the adjacent inner seedling mounting bases 51 and 51 side with the moving shaft 66a as the rotation center.

  However, an auxiliary work device 63 such as an additional fertilizer or a herbicide spraying device may be attached to the upper rear end of the seedling planting device 52. Since the auxiliary work device 63 is disposed inside the extended seedling mounting table 51 ′, when the extended seedling mounting table 51 ′ is folded to the inner seedling mounting table 51 side around the rotation shaft 66a, the extended seedling mounting table 51 ′. Hits the auxiliary work device 63 and the extended seedling mounting table 51 ′ cannot be folded.

  Therefore, as shown in FIG. 3A, the height of the upper side of the connection fence 66 between the extended seedling mounting table 51 ′ and the seedling mounting table 51 inside thereof is set to the height A on the upper side of the seedling mounting table 51. In contrast, the height B on the lower side is increased (A <B). The height B with respect to the height A is set so that the extension seedling placement table 51 ′ does not hit the auxiliary work device 63 when the extension seedling placement table 51 ′ is folded to the inner seedling placement table 51 side. The seedling placement table 51 ′ can be folded to the inner seedling placement table 51 side without interfering with the auxiliary work device 63. In a seven-row planting rice transplanter or the like, the extended seedling mounting table 51 ′ on either the left or right side can be folded.

  Further, as shown in the rear view of the seedling mounting table 51 in FIG. 4, a support plate 67 that is long in the vertical direction is provided at the upper end of the outer side of the body on the adjacent seedling mounting table 51 side of the extended seedling mounting table 51 ′. The rotation shaft 67a is provided in a direction perpendicular to the plane of the support plate 67, and the extended seedling mounting table 51 ′ is disposed so as to be rotatable clockwise or counterclockwise about the rotation shaft 67a. The extended seedling mounting table 51 ′ at the time of storage can be configured to be received by the upper ends of the plurality of seedling mounting tables 51. Note that the seedling guide 51c attached to the upper end portion of the seedling mounting table 51 is removed when the extended seedling mounting table 51 'is stored.

  Since the rotation shaft 67a is provided at the upper end of the support plate 67, the extended seedling placement table 51 ′ can be stored in a posture substantially orthogonal to the seedling placement table 51. There is no need to provide a receiving stand for receiving and supporting on the seedling placement stand 51 side, and a simple configuration can be obtained.

  In addition, since the extended seedling placement table 51 ′ can be stored in a posture that is substantially orthogonal to the seedling placement table 51, the extended seedling placement table 51 ′ can be rotated even if it is about to rotate due to vibration applied to the extended seedling placement table 51 ′. Since it is possible to prevent returning to the work position due to the weight of the mounting table 51 ′, the extended seedling mounting table 51 ′ protrudes from the conveying means such as a rack, or the extended seedling mounting table 51 ′ comes into contact with the wall or surrounding articles. It is prevented from being damaged.

  In the case of this configuration, the height of the connecting fence 66 between the extended seedling mounting table 51 ′ and the seedling mounting table 51 inside thereof can be made lower than that shown in FIG. 3. Further, in this case, there is no interference with the auxiliary work device 63 when the extended seedling mounting table 51 'is folded, and only one of the left and right extended seedling mounting tables 51' can be folded.

  A handle 54 is provided on the outside of the machine body of the extended seedling mounting table 51 ′ to switch the connection state between the extended seedling mounting table 51 ′ and the seedling mounting table 51. At the time of planting and moving, the extended seedling mounting base 51 ′ is adjacent to the seedling mounting base 51, the handle 54 is tightened, and the extended seedling mounting base 51 ′ is used to run the aircraft with the pivot shafts 66a and 67a as fulcrums. Prevents rotation due to vibration caused by planting work. On the other hand, at the time of folding the extended seedling placement table 51 ′, the handle 54 is loosened so that the extension seedling placement table 51 ′ can be rotated about the rotation shafts 66 a and 67 a.

  With the above-described configuration, it is possible to prevent the extension seedling placement table 51 ′ from rotating and adjoining the seedling placement table 51 during the movement of the machine body. It is prevented that the protruding seedling table 51 ′ is damaged by being protruded and coming into contact with the utility pole or the wall, and the durability of the extended seedling mounting table 51 ′ is improved.

  In addition, since the extended seedling placing table 51 ′ rotates during the seedling planting operation, it is possible to prevent the seedling loaded on the extended seedling placing table 51 ′ from moving to a position where the seedling planting device 52 cannot be scraped. It is prevented that a section where the seedling cannot be planted is generated, and it is not necessary for the worker to plant the seedling manually, thereby reducing the labor of the worker.

  In addition, since it is possible to prevent the loaded seedlings from falling when the extended seedling mounting table 51 ′ is rotated, it is not necessary to pick up the dropped seedlings, the work efficiency is improved, and the loaded seedlings are dropped. The planting operation of the seedlings is continued without being noticed, and it is prevented that the unplanted section of the seedlings is widely generated on the planting strip corresponding to the extended seedling mounting table 51 ′, and the planting of the seedlings by hand is omitted. The

  As shown in FIG. 5, seedling guides 51c and 51′c for guiding seedlings to the seedling mounting table 51 and the extended seedling mounting table 51 ′ are respectively provided at the upper end of the seedling mounting table 51 and the upper end of the extended seedling mounting table 51 ′. The seedling guides 51c and 51′c may be configured to be rotatable to the rear side of the body of the seedling mounting bases 51 and 51 ′ using the respective rotation shafts 51d and 51′d as rotation fulcrums.

  When the seedling guides 51c and 51'c are rotated rearward when the extended seedling placement table 51 'is stored on the seedling placement table 51 side in this way, the seedling guides 51c and 51'c become the seedling placement table 51 and the extension. Since there is no interference with the seedling mounting table 51 ′, the man-hours for storing the extended seedling mounting table 51 ′ are reduced, and the work efficiency is improved as compared with the prior art.

  In FIG. 5, the seedling guides 51 c and 51 ′ c are rotated to a posture in which their end portions protrude toward the rear side of the machine body. However, the seedling mounting table 51 and the extended seedling mounting table 51 ′ are provided. If the seedling guide guides 51c and 51'c are folded, the seedling guide guides 51c and 51'c are folded when the extended seedling placement table 51 'is folded. There is no interference, the efficiency of the storage work is improved, and there is no protrusion of the seedling guides 51c and 51'c to the upper side of the machine body, and the presence of the seedling guide guides 51c and 51'c when the machine is housed This eliminates the need to take into account the efficiency of containment work.

In addition to the above-described configuration, the seedling guides 51c and 51′c may be configured to be rotatable to the front side of the body of the seedling mounting bases 51 and 51 ′, respectively.
When the seedling guide guides 51c and 51′c are rotated forward, the seedling guide guides 51c and 51′c protrude forward, or the seedlings are placed in front of the seedling placement table 51 and the extended seedling placement table 51. Since the guide guides 51c and 51'c are in an approaching approach, and the seedling guide guides 51c and 51'c are arranged so as not to protrude during the folding operation, the seedling guide guides 51c and 51c, 51'c does not interfere, the efficiency of the storing work is improved, and each seedling guide guide 51c, 51'c does not protrude upward from the machine body. There is no need to consider the existence of 51'c, and the efficiency of the accommodation work is improved.

  Alternatively, if the seedling guide guides 51c and 51'c are configured to be rotatable on either the front side or the rear side of the body, each seedling guide guide 51c is matched with the presence or absence of the fertilizer 5 or the like mounted on the seedling transplanter. , 51′c can be moved to a position where they do not interfere with other members, so that the folding work efficiency of the extended seedling mounting base 51 ′ is further improved.

  One extended seedling placement stand 51 ′ may be provided on one side of the outer end portion of the seedling placement stand 51, or one extended seedling placement stand 51 ′ may be provided on each of both outer end portions of the seedling placement stand 51. In this way, by providing only one extended seedling mounting table 51 ′ per one outer end portion of the seedling mounting table 51, it is possible to reduce the force required by the operator when rotating the extended seedling mounting table 51 ′. , Labor of workers is reduced.

Even when the extended seedling mounting bases 51 ′ are provided at both outer end portions of the seedling mounting base 51, since they are folded one by one, the force required by the operator is small and the labor of the operator is reduced.
FIG. 6 shows a side view of the seedling mounting table 51. On the back side of the seedling mounting table 51, a seedling feeding case 51b for feeding the seedling mat downward is provided. In addition, in order to simplify description, illustration and description of auxiliary seedling mounting base 51 'and seedling feeding case 51'b are omitted here.

Under the seedling feeding case 51b, there is provided a seedling mounting table vibration device 75 provided with a vibration plate 69 of the seedling mounting table 51 and a motor 74 that rotates a rotating shaft 74a of the vibration plate 69.
As shown in FIG. 7A, the vibration plate 69 has a configuration in which heavy spheres are fixed to the outer side of a crank-shaped plate attached to the rotary shaft 74a or a soft resin annular plate as shown in FIG. 7B. It may be adopted.

  When the rotating shaft 74a of FIG. 7A is made of a soft material, the rotating shaft 74a swings due to the rotation of the motor, so that the crank-shaped plate 69 can effectively give vibration to the seedling mounting table 51. If a configuration in which a heavy sphere is fixed to the outer side of the soft resin annular plate 69 shown in FIG. 7B is adopted, the annular plate 69 swings as shown by the dotted line in the figure, so that the weight on the outer side of the annular plate 69 is increased. The ball 69a can effectively vibrate the seedling placement table 51.

  Thus, since the vibration plate 69 swings not only in the left-right direction but also in the up-down direction, the soil is easily unraveled from the seedling mat on the seedling mounting table 51, and the seedling mat 52a can easily remove the seedling from the seedling mat. .

  The seedling mounting table 51 and the seedling mounting table 51 ′ for 8-row planting are mounted on the front plate 77 (see FIGS. 6 and 8), and the width of each seedling mounting table 51, 51 ′ (around 270 mm). Has a structure in which the planting claws 52a grab the seedlings from the seedling mats on the seedling placement platforms 51 and 51 ′ so that the front plate 77 can slide left and right.

FIG. 8A shows a perspective view of the main part of the front plate 77, and FIG. 8B shows the shape of the hole 77 a formed in the sliding surface of the seedling mounting table 51 of the front plate 77.
When the resin-made sliders 78 corresponding to the lateral widths of the seedling placement platforms 51 and 51 ′ are disposed on the upper surface of the front plate 77, the seedling placement platforms 51 and 51 ′ slide on the slider 78. The seedling mounts 51 and 51 ′ are easy to slide.

  At this time, since the seedling mounting bases 51 and 51 ′ slide on the slider 78, sand particles and mud are likely to accumulate on the slider 78, so that the sliding range in the left-right direction of the slider 78 on the front plate 77 is almost the same. If a hole 77a is made in the front plate 77 at the center, sand grains and mud that have entered between the seedling placement platforms 51, 51 'and the slider 78 due to sliding of the seedling placement platforms 51, 51' are in the holes 77a. It can be scraped off, and can be removed from the hole 77a of the front plate 77 onto the field.

Thus, the degree of damage of the slider 78 and the front plate 77 due to sand particles, mud, etc. is reduced, and their durability is improved more than that of the prior art.
As shown in FIG. 1, the fertilizer supplied from the fertilizer application device 5 is configured to pass through the fertilizer hose 62 and be discharged from the fertilizer discharge port 62 a to the field, and to efficiently infiltrate the fertilizer into the soil. The groove producing device 24 is formed at the front portion of the fertilizer discharge port 62a. The fertilization discharge port 62a is inserted into left and right discharge space portions 55a and 55a (shown in the plan view of the float 55 in FIG. 9) formed on the front side of the float 55, respectively.

  The float 55 shown in FIG. 9 forms a water channel 55b that allows water to pass from the front side to the rear side on the bottom side. The water passage 55b is formed with a water absorption portion 55c having a lateral width that narrows from the front of the aircraft toward the rear of the aircraft on the front side of the aircraft to facilitate water intake. And the drainage part 55d which becomes wide in the left-right width toward the rear side of the body from the front side of the body is formed in the rear part of the body so that water can be easily discharged. Furthermore, between the front and rear of the machine body, a water storage portion 55e wider in the left-right direction than the water channel 55b is formed, and the float 55 does not float too much even if much water enters.

  However, in a paddy field, water that cannot be received with the above configuration may enter the bottom surface of the float 55, and the float 55 floats up, and the effect of suppressing pressure by coming into contact with the field scene is reduced.

  In order to prevent this, it is conceivable to form a water draining groove for draining extra water from the water storage part 55e between the front and rear of the machine body to the outside of the float 55. However, the part where the water draining groove is formed is less likely to contact the field scene. Therefore, there may be a problem that small irregularities remain on the leveling mark and the planting depth of the seedling is shallower or deeper than the setting.

  In order to solve the above problem, left and right covering plates 56 and 56 (shown in FIG. 9) fill the float 55 with the soil of the farm scene by bringing the soil of the farm scene into the groove into which the fertilizer formed in the farm scene enters the float 55. Left and right drain grooves 55f for discharging water to the left and right of the float 55 on the front side of the fuselage with respect to the left and right cover plates 56 and 56 and on the rear side of the fuselage with respect to the left and right discharge space portions 55a and 55a. 55f is formed. The left and right drain grooves 55f and 55f are formed on the left and right sides of the water storage portion 55e so that a large amount of water is not discharged to the left and right sides.

  By adopting the above configuration, it is possible to prevent the float 55 from leaving the field scene because too much water enters the lower part of the float 55, so that the float 55 can level the field scene and set the seedling planting depth. Therefore, the planting depth of the seedling is stabilized and the growth of the seedling is stabilized.

  In addition, since the fertilizer discharge port 62a and the grooving device 24 are prevented from being separated from the field scene, the fertilizer can be reliably infiltrated into the soil, and the fertilizer necessary for seedling growth is prevented from being insufficient. Therefore, deterioration of the quality of the crop due to poor growth is prevented.

  Further, by providing the left and right cover plates 56, 56 on the rear side of the machine with respect to the drain grooves 55f, 55f, the left and right cover plates even if the drainage grooves 55f, 55f are not grounded and the swell is generated in the field. 56 and 56 can break this swell when filling the groove, so that the planting depth of the seedling is prevented from becoming shallower or deeper than the setting due to the unevenness of the field, and the planting depth of the seedling is stable. And seedling growth is stabilized.

  The seedling transplanter of the present invention is not limited to a rice transplanter, and may be used as a seedling transplanter for planting other seedlings such as vegetable seedlings.

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter with fertilizer 2 Traveling vehicle body 3 Elevating link mechanism 4 Seedling planting part 5 Granule feeding device (fertilizer) 10 Front wheel 11 Rear wheel 12 Mission case 13 Front wheel final case 15 Main frame 17 Partial strip operation lever 18 Rear wheel gear case 19 Changeover switch 20 Engine 21 Belt drive 22 Drawing marker
DESCRIPTION OF SYMBOLS 23 Hydraulic continuously variable transmission (HST) 24 Groove body 25 Planting clutch case 26 Planting transmission shaft 27 (27a, 27b) Leveling rotor 28 Fertilizer transmission mechanism 30 Engine cover 31 Seat 32 Front cover 33 Control part 34 Handle 35 Floor Step 36 Rear steps 38a, 38b, 38c First to third preliminary seedling mounting tables 39a, 39b, 39c First to third moving link members 40 Upper link 41 Lower link 42 Link base frame 43 Vertical link 46 Elevating hydraulic cylinder 49 Support machine frame 50 Transmission case
51 Seedling Placement Stand 51a Seedling Exit 51b Seedling Feed Belt 51c Seedling Guide 51 ′ Extended Seed Placement Stand 52 Seedling Placement 52a Planting Claw 53 Blower Electric Motor 55 Float 56 Covering Plate 58 Blower 59 Air Chamber 60 Fertilizer Hopper 61 Feeding part 62 Fertilization hose
63 Auxiliary work equipment (additional fertilizer, herbicide spraying equipment)
65 Support frame body 65a Support roller 65b Both side members 66 Connecting fence 66a Rotating shaft 67 Support plate 67 'Support plate 67a Rotating shaft 69 Vibration plate 69a Weight ball 70 Preliminary seedling table switching drive device 74 Motor 74a Rotating shaft 75 Seedling Mounting table vibration device 77 Front plate 77a Hole 78 Slider

Claims (5)

A traveling vehicle body (2) that travels in the field with left and right front wheels (10) and rear wheels (11) is provided, and a lifting link mechanism (3) and a lifting link mechanism (3) are disposed at the rear of the traveling vehicle body (2). A seedling placement stand (51) for loading a plurality of seedlings is arranged, and a seedling planting device (52) for taking seedlings and planting them on a farm is provided below the seedling placement stand (51), and the outside of the seedling placement stand (51) In the seedling transplanting machine provided with an extended seedling placing table (51 ′) that is rotatable at the end, and provided with an auxiliary work device (63) that sprays fertilizer and chemicals on the rear lower part of the seedling placing table (51),
A rotation shaft (66a, 67a) for moving the extended seedling mounting base (51 ′) to the storage position and the unfolding position is provided on the seedling mounting base (51),
The rotating shafts (66a, 67a) are arranged such that when the extended seedling mounting base (51 ') is rotated onto the seedling mounting base (51) to be stored, the extended seedling mounting base (51') is an auxiliary work device. A seedling transplanting machine arranged at a position that can move along a trajectory that does not interfere with (63). The outer end portion of the seedling mounting table (51) and the outer end portion of the extended seedling mounting table (51 ′) are connected to form a connecting portion, and a connecting member (66) is provided in each connecting portion,
A rotation shaft (66a) of the extended seedling mounting base (51 ′) is provided at one end of the connecting members (66),
The seedling transplanting machine according to claim 1, wherein the rotation shaft (66a) has an inclined posture that is separated from the seedling placement surface of the seedling placement base (51) toward the lower side of the traveling vehicle body (2). A support plate (67) that is long in the vertical direction is provided on the outside of the upper end portion of the extended seedling mounting base (51 ′),
A rotation shaft (67a) is attached to the support plate (67) in a direction perpendicular to the plane of the support plate (67),
The extended seedling mounting table (51 ′) is configured to be rotatable in the clockwise or counterclockwise direction around the rotation shaft (67a),
The seedling transplanting machine according to claim 1, wherein the extended seedling placing table (51 ') at the time of storage is configured to be received by the upper ends of the plurality of seedling placing tables (51).   A seedling guide (51c) for guiding seedlings to the seedling mounting table (51) and the extended seedling mounting table (51 ') on the upper end of the seedling mounting table (51) and the upper end of the extended seedling mounting table (51') The seedling transplanter according to any one of claims 1 to 3, wherein 51 'c) is configured to be rotatable to the front side or the rear side of the seedling mounting table (51, 51'), respectively. One extended seedling placement table (51 ′) is provided on either one of the outer ends of the seedling placement table (51), or one is provided on each outer end of the seedling placement table (51). The seedling transplanter according to any one of claims 1 to 4, wherein

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